KR101579791B1 - Apparatus fixing joint for pipe - Google Patents

Apparatus fixing joint for pipe Download PDF

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Publication number
KR101579791B1
KR101579791B1 KR1020150126720A KR20150126720A KR101579791B1 KR 101579791 B1 KR101579791 B1 KR 101579791B1 KR 1020150126720 A KR1020150126720 A KR 1020150126720A KR 20150126720 A KR20150126720 A KR 20150126720A KR 101579791 B1 KR101579791 B1 KR 101579791B1
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KR
South Korea
Prior art keywords
pipe
bolt
housing
outer circumferential
circumferential surface
Prior art date
Application number
KR1020150126720A
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Korean (ko)
Inventor
김광숙
Original Assignee
주식회사 동광주철
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Priority to KR1020150126720A priority Critical patent/KR101579791B1/en
Application granted granted Critical
Publication of KR101579791B1 publication Critical patent/KR101579791B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
    • F16L21/04—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings in which sealing rings are compressed by axially-movable members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L17/00—Joints with packing adapted to sealing by fluid pressure
    • F16L17/02—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F16L21/08—Joints with sleeve or socket with additional locking means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Clamps And Clips (AREA)

Abstract

The present invention relates to a pressure wheel preventing a pipe from being left with an improved stress dispersion structure, which is coupled to a pipe connection unit for the pipe connection unit not to be left. According to the pressure wheel preventing a pipe from being left, a clamping bolt coupling a spike to a front end is clamped to holders formed in a body, and in a housing provided between the holders, a fixing bolt is penetrated to be fixedly clamped by a fixing nut. The housing is formed to protrude downwardly more than a lower surface of a body. A plurality of holders are formed in a central portion on an outer circumferential surface of the body at a predetermined distance. The clamping bolt is coupled to be inclined in a central direction of the body. The spike has three compression protrusions which are formed to protrude in a portion compressed in an outer circumferential surface of a pipe.

Description

[0001] Apparatus fixing joint for pipe improved in stress distribution structure [

In particular, the present invention relates to a pipe detachment prevention roller, in which a holder is formed radially at the center of the outer circumferential surface of a body to firmly support the center axis of the body with a tightening bolt and improve the contact ratio with the pipe by the triple- And more particularly to a stress relief structure capable of being dispersed.

In addition, the present invention is characterized in that a housing having a nut seating portion at an upper portion thereof is formed to protrude below the body at regular intervals to stably store and transport stacked materials, and an opening portion formed between adjacent housings improves convenience and stability of installation work The present invention relates to a stress relief structure capable of preventing a problem of bolt tap damage because the lower surface of the upper body and the tightening bolts of the lower body are not in contact with each other.

Generally, pipes used in water pipes are covered with a surface, cut to the required length, and then fix the connection fixture so that both pipes are disconnected in the connected state.

As shown in FIGS. 1, 2 and 3A, a ring-shaped rolling body 10 is installed to be installed in a cast iron pipe, and the rolling body 10 (see Japanese Patent Application Laid-Open No. 20-2008-0005525) The fastening protrusions 20 are formed at regular intervals on the fastening protrusions 20. The fastening protrusions 20 are coupled to the fastening protrusions 20 so that the fastening protrusions 20 are fastened to the cast iron tubes.

A plurality of spike housings 30 are radially formed between the fastening protrusions 20 and the spike housing 30 is formed with a spike coupling hole 31 inclined at a predetermined angle.

A spike 40 is provided in the spike coupling hole 31 of the spike housing 30 so that the surface of the cast iron pipe can be pressed and fixed. A plurality of spike blades 41 having different heights are formed on the bottom of the spike 40, .

A plurality of coupling protrusions 42 are formed on the spike 40. A first spiral 43 is formed on the coupling protrusions 42 and a seating portion 44 in the downward direction in which the coupling protrusions 42 are formed And a groove 45 is formed at the bottom of the seating part 44. As shown in Fig.

In the spike coupling hole 31 of the spike housing 30, a press bolt 50 is threaded so as to press the spike 40.

However, in the above prior art, since the spike housing 30 is separately protruded on the upper side of the rolled body 10, when the press bolt 50 is tightened too strongly or a strong pressure is applied downwardly from above, As a result, the spike (40) is pushed backward and is turned upside down, and when the strong pressure is transmitted from the upper side, there is a problem that the force of engagement between the roller body and the pipe can not be maintained.

The actual product realized by such a conventional technique has the spike housing 30 protruded on the upper side of the rolled body 10 and the lower end 11 of the rolled body 10 is formed at the same height, It is clearly shown in FIG.
Such a product has been tested in practice by the Applicant in the field and it has been required to improve the inadequate position of the spike housing 30, the poor contact ratio of the spikes 40, and improper tightening of the press bolt 50.

In addition, as shown in FIG. 5, when the lower pressing bolt is pressed by the lower surface of the upper roller, the bolt tab is damaged There was a problem of poor assembling and assembling.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a holder having a radial shape at the center of an outer circumferential surface of a body to firmly support a center axis of the body with a fastening bolt, And it is an object of the present invention to provide an anti-departure rolling element capable of effectively dispersing stress.

In addition, the present invention is characterized in that a housing having a nut seating portion at an upper portion thereof is formed to protrude below the body at regular intervals to stably store and transport stacked materials, and an opening portion formed between adjacent housings improves convenience and stability of installation work Another object of the present invention is to provide a pipe separation preventing pressure wheel in which the lower surface of the upper body and the tightening bolts of the lower body are not in contact with each other during lamination storage, thereby preventing a problem caused by bolt tap damage.

In the pipe detachment prevention pressure wheel improved in the stress dispersion structure according to the present invention, a tightening bolt having a spike at its tip end is fastened to a holder formed in the body, and a housing provided between the holders is fastened to the outer surface of the pipe, Wherein a fixing bolt having a part is inserted and fixed by a fixing nut,
The housing is formed to protrude downward from the bottom surface of the body, and an opening is formed between the housing and another adjacent housing so that the bolt can be tightened while observing the coupled state of the pipe connecting portion. On the upper surface, A nut seating portion is formed lower than the flat portion height of the nut,
The holder has a plurality of radially spaced apart eccentric portions at the center of the outer peripheral surface of the body so that the fastening bolt supports the center of the body and is not pushed when tightened,
Wherein the tightening bolt is inclined to the center of the body at an inclination angle? Of 20.5 to 24.4 degrees in a direction in which the pipe squeezed inward is released,
The three spike protrusions having a height difference penetrate the inside of the body so that the spike is gradually enlarged in size in a direction opposite to the direction in which the pipe pressed on the inside is disengaged, And the protrusion is pressed and held so that the pressing protrusion is formed at an angle of inclination of 2 to 4 degrees with the outer circumferential surface of the pipe so that when the water pressure is applied to the inside of the pipe after completion of the construction, The three compression protrusions simultaneously press the outer circumferential surface of the pipe so as to be able to distribute the stress, and the center angle A is formed to be 45 ~ 75 degrees with respect to the center of the body so as to disperse the stress, Is formed to be maintained at 150% or more.

Since the fastening bolt firmly supports the central axis of the body and the triple-ended spike, which is formed long, has only one pressing projection on the outer circumferential surface of the pipe When the fluid flows inside the pipe when the pipe is connected to the pipe, the water pressure is applied to the inside of the pipe, so that when the load is applied in the direction of the fluid flow, the three compression protrusions cover the entire circumferential surface of the pipe. So that the stress is dispersed to maximize the stress, thereby further enhancing the releasing capacity of the pipe.

Further, since the opening portion is formed between the housings, it is possible to adjust the fastening bolt properly while viewing the internal state, thereby improving convenience and stability of the installation work.

In addition, since the housing is protruded downwardly of the body, a nut seating portion is formed at a height lower than the flat portion of the body at the upper side of the housing, and an opening is formed between the adjacent housings, It is very convenient not only to store a plurality of bolts but also to prevent a problem of bolt tap damage when the bolts are stored because they are not pressed.

1 is a perspective view of a conventional fixed pressure wheel,
2 is a state of use in which a conventional fixed pressure wheel is coupled to a pipe,
FIG. 3A is a cross-sectional view of a conventional fixed pressure wheel coupled to a pipe,
3B is a state in which the conventional fixed pressure roller is separated by the upward pressure,
4A is a frontal perspective photograph of a product manufactured in the prior art,
FIG. 4B is a rear view photograph of a product manufactured according to the prior art,
5 is a perspective view showing a state in which the bottom surface of the upper body is in contact with the tab of the pressing bolt when the conventional fixed pressure roller is stacked,
FIG. 6 is a perspective view of a pipe departure-avoiding pressure wheel in which the stress distribution structure according to the present invention is improved,
7 is a partially cut-away cross-sectional photograph of an actual product to which the present invention is applied,
8 is an assembled cross-sectional view of a pipe departure-avoiding pressure wheel in which a stress distribution structure according to the present invention is improved,
9 is a partially enlarged cross-sectional view of Fig. 8,
10 is an exploded perspective view showing a state of engagement of spikes in a pipe deviation preventing pressure roller in which the stress dispersion structure according to the present invention is improved,
11 is a partial cross-sectional view showing a state of engagement of a pipe departure-avoiding pressure rolling wheel in which a stress dispersion structure according to the present invention is improved,
12 is a partial cross-sectional view showing an operating state of a spike in accordance with a water pressure acting on a pipe in a pipe departure-avoiding pressure roller in which a stress distribution structure according to the present invention is improved;
13 is an assembled perspective view showing the coupling of the pipe departure-avoiding pressure roller according to the present invention while viewing the inner engaged state with the opening portion,
Fig. 14 is a partially cutaway cross-sectional view of a state in which an actual product of the present invention is coupled to a pipe,
15 is a photograph of a sash showing that the bolt tab does not come into contact when the actual products of the present invention are stacked and stored.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 6, the anti-pipe anti-release rollers having improved stress dispersion structures according to the present invention include a plurality of holders 123, and a ring-shaped body 120 having a plurality of housings 126 formed thereon.

The body 120 has a planar portion 121 formed on one side and a support protrusion 122 formed on the other side of the body 120. The body 120 has four holders 123 are formed in the respective holders 123 and fastening bolts 124 are fastened to the holders 123 in the center direction.

At this time, the holder 123 forms a reinforcing portion (not shown) on the outer circumferential surface of the body 120, so that the strength of the holder 123 according to the tightening of the tightening bolt 124 can be improved.

7, the holder 123 has a structure in which the tightening bolt 124 closely contacts the spike 125 while supporting the central axis of the body 120, 123 are formed radially at regular intervals in the central portion of the outer circumferential surface of the body 120, so that there is a distinct technical difference from the conventional art in which the body 120 is formed eccentrically to one side of the body 120.

The support bracket 122 formed at the front end of the body 120 serves to press a packing member to be described later and the housing 126 protruded downward from the body 120 has a structure for fastening the fixing bolt 127 And a plurality of openings 129 are formed at regular intervals.

The housing 126 is formed with a nut seating portion 126a at a height lower than the plane portion 121 of the body 120 so that the fixing nut 128 can be stably engaged. Since the length of the fixing bolt 127 penetrating through the housing 126 can be made shorter than the conventional one, the manufacturing cost can be reduced, and the nut mounting portion 126a having a low height can be formed on the upper side of the body 120 Since the protruded portion is not formed, the plurality of bodies 120 are stacked in a stable posture, and it becomes very convenient to carry and store.

As shown in FIG. 8, when the pipes are separated from each other, the pressure relief preventing rollers having improved stress dispersion structures according to the present invention are used to connect pipes such as cast iron pipes, coated steel pipes, general steel pipes, And the connection operation is completed.

The jaw portion P1 of the other pipe Pb is inserted outside the tip end of the one pipe Pa and the packing member 130 is inserted between the outer surface of the tip end of the pipe Pa and the inner surface of the jaw portion P1 And after the rollers are positioned on the outside thereof, an assembly operation is performed.

When the tightening bolt 124 fastened in each holder 123 of the body 120 positioned on the outer surface of the pipe Pa is advanced in the center direction, the spike 125 coupled to the tip of the tightening bolt 124 advances, (Pa).

The fixing bolt 127 is passed through the housing 126 so that the tip of the supporting jaw 122 of the body 120 is closely contacted with the packing member 130 and then the engaging jaw 127a is inserted into the jaw portion of the pipe Pb P1 and then the fixing nut 128 is pushed on the opposite side, the connection operation of both pipes Pa and Pb is completed.

9, the tightening bolts 124 passing through the holder 123 are coupled to each other at a predetermined inclination angle? With respect to the center of the body 120, and the upper side of the spike 125 The insertion portion 124a formed at the tip of the tightening bolt 124 is inserted into the insertion groove 125b formed in the front end portion of the fastening bolt 124, At this time, it is preferable that the inclination angle α is formed to be inclined at an angle of about 20.5 to 24.5 ° in a direction in which the pipe squeezed inward is released.

Three compression protrusions 125a protrude from a portion of the spike 125 to be pressed on the outer peripheral surface of the pipe and the compression protrusions 125a penetrate the inside of the body 120 And has a height difference of 2 ° to 4 ° so that one side is pressed and held on the outer circumferential surface so that the shortest compression protrusion 125a of one side is in tight contact with the outer circumferential surface of the pipe.

Particularly, as shown in FIG. 10, the three compression protrusions 125a formed on the spike 125 are gradually enlarged in the direction opposite to the direction in which the pipe squeezed inward is released, 125a are formed to be long so as to maintain a central angle A of 45 DEG to 70 DEG so as to increase the contact ratio on the outer peripheral surface of the pipe and effectively disperse the stress.

The center angle A is a concept introduced to express how much the compression protrusion 125a covers the outer circumferential surface of the pipe. In FIG. 6, a virtual center point is formed at the center of the body 120 to express the center angle A.

That is, the contact ratio is expressed as a percentage by dividing the length of the compression protrusion 125a of the spike 125 by the circumferential ratio of the pipe. In the case of the pipe specification 150A, the pipe diameter is 170 mm, And the length of one compression protrusion 125a formed on the four spikes 125 is 66.625 mm when the center angle A is 45 °, the contact ratio (%) is as follows.

Length of crimp projection: 66.625

Number of crimp protrusions: 3

Number of spikes: 4

Pipe circumference: 533

Contact ratio (%) = 100 * {66.625 * 3 * 4} / 533 = 150 (%)

Therefore, compared to the prior art in which the number of the pressing projections is two and the length of the pressing projections is about 50 mm, the present invention significantly increases the contact ratio by about twice, and the torque to tighten the tightening bolt 124 is also tightened And it is possible to remarkably improve the workability in consideration of the case where the connection failure occurs due to excessive or slight tightening of the tightening bolts 124 in the installation work.

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11, only one compression protrusion 125a located on the left side of the drawing among the three compression protrusions 125a of the spike 125 is inserted into the pipe 123 of the pipe 123, Is pressed against the outer surface of the pipe (Pa) to support the pipe.
When the water pressure is applied to the inside of the pipe Pa in the assembled state as described above, the pipe Pa moves due to the water pressure to the left side in the drawing, Since the three compression protrusions 125a formed on the inner circumferential surface of the pipe are tightly pressed against the outer circumferential surface of the pipe Pa at the same time, the contact ratio between the compression protrusions 125a and the pipe Pa is maximized to disperse the stress, .

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Meanwhile, the present invention proposes a more clear solution to solve the defective coupling in the installation work described above.

That is, the housing 126 of the present invention is protruded downward from the bottom surface of the body 120, and an opening 129 is provided between the housing 126 and another adjacent housing so that the bolt can be tightened, Respectively.

Therefore, as shown in FIGS. 6 and 13 and FIG. 14, which is a photograph of an actual product, the engagement of the fixing nut 128 coupled to the upper side of the fixing bolt 127 through the opening 129 formed between the housings 126 The state of the packing member 130 which is pressed by the support jaw 122 can be visually confirmed, so that a robust and stable assembly operation can be performed.

As a result of this stable and robust coupling, the effect of the increase of the limit water pressure can be obtained by about 50% or more as compared with the conventional product.

Figure 112015087044159-pat00002

[Hydraulic test result]

Meanwhile, the present invention prevents damage to the bolt tab during stacking, which is a problem of the conventional product, due to the new structure of the housing 126 and the opening 129.

That is, in the product in which the present invention is implemented, the housing 126 having the nut seating portion on the upper side portion is formed to protrude downward of the body at regular intervals, and the opening portion 129 is formed between the adjacent housings 126 , As shown in the photograph of FIG. 15, the lower surface of the body positioned on the upper side during the laminated storage is not brought into contact with the tightening bolts on the lower positioned body.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. will be.

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120: Body 121:
122: support jaw 123: holder
124: Tightening bolt 125: Spike
125a: compression protrusion 126: housing
126a: nut mounting part 127: fixing bolt
128: Fixing nut 129: Opening part
130: Packing member A: Center angle
α: tilt angle β: tangent angle

Claims (4)

A fastening bolt is fastened to the holder formed on the body and a spike is fastened to the tip of the fastening bolt. The fastening bolt having a fastening part for fastening the fastening part to the outer surface of the pipe is inserted into the housing, In the prevention rolling,
The housing 126 is protruded downward from the bottom surface of the body 120 so that an opening 129 is formed between the housing 126 and another adjacent housing 126 so that the bolt can be tightened A nut seating portion 126a is formed on the upper surface of the body 120 so as to have a lower height than the plane portion 121 of the body 120 so as to improve the stability of the fixing nut 128,
The holder 123 is formed with a plurality of radially spaced apart eccentric portions at the center of the outer circumferential surface of the body 120 so as not to be pushed when the tightening bolt 124 supports the center of the body 120,
The tightening bolt 124 is slantingly engaged with the center of the body 120 at an angle of inclination [alpha] of 20.5 to 24.4 [deg.] In a direction in which the pipe squeezed inward is released,
Three compression protrusions 125a having a height difference are formed on the inside of the body 120 so as to be gradually enlarged in size in a direction opposite to the direction in which the pipe squeezed on the inner side is separated from the spike 125, The compression protrusions 125a are formed on the outer circumferential surface of the pipe to be engaged with the outer circumferential surface of the pipe so that the compression protrusions 125a are engaged with the outer circumferential surface of the pipe at an angle of inclination of 2 to 4 degrees, When the pipe moves in the direction in which the hydraulic pressure acts, the three compression protrusions 125a press the outer circumferential surface of the pipe at the same time, and the center of the body 120 Is formed so as to have a center angle (A) of 45 to 75 degrees so that the contact ratio with respect to the outer peripheral surface of the pipe is maintained to be 150% or more. Apryun.

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KR1020150126720A 2015-09-08 2015-09-08 Apparatus fixing joint for pipe KR101579791B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101984139B1 (en) 2018-10-15 2019-05-30 한돈규 A safe gland assembled with wedge grip and joining stick
KR102193229B1 (en) 2020-04-27 2020-12-18 이진숙 Apparatus for measuring stress of rock in water supply pipe clamp

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200166481Y1 (en) * 1999-07-23 2000-02-15 이재천 An igniter for cooker
KR200185380Y1 (en) * 1999-12-30 2000-06-15 조봉휘 The fixing means of a compressing bands for preventing separation of water pipes
KR20080005525U (en) * 2007-05-17 2008-11-21 서우실업 주식회사 Fixed seizure for cast-iron pipe
KR100987014B1 (en) * 2010-05-17 2010-10-11 주식회사 휴비코 A pressure device for prevent separate of pipe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200166481Y1 (en) * 1999-07-23 2000-02-15 이재천 An igniter for cooker
KR200185380Y1 (en) * 1999-12-30 2000-06-15 조봉휘 The fixing means of a compressing bands for preventing separation of water pipes
KR20080005525U (en) * 2007-05-17 2008-11-21 서우실업 주식회사 Fixed seizure for cast-iron pipe
KR100987014B1 (en) * 2010-05-17 2010-10-11 주식회사 휴비코 A pressure device for prevent separate of pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101984139B1 (en) 2018-10-15 2019-05-30 한돈규 A safe gland assembled with wedge grip and joining stick
KR102193229B1 (en) 2020-04-27 2020-12-18 이진숙 Apparatus for measuring stress of rock in water supply pipe clamp

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