KR101825740B1 - Press wheel for preventing departure of pipes - Google Patents

Press wheel for preventing departure of pipes Download PDF

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Publication number
KR101825740B1
KR101825740B1 KR1020150179396A KR20150179396A KR101825740B1 KR 101825740 B1 KR101825740 B1 KR 101825740B1 KR 1020150179396 A KR1020150179396 A KR 1020150179396A KR 20150179396 A KR20150179396 A KR 20150179396A KR 101825740 B1 KR101825740 B1 KR 101825740B1
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KR
South Korea
Prior art keywords
tubular body
spike
pressing blade
tube
tapered surface
Prior art date
Application number
KR1020150179396A
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Korean (ko)
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KR20170071264A (en
Inventor
유영주
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유영주
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Filing date
Publication date
Application filed by 유영주 filed Critical 유영주
Priority to KR1020150179396A priority Critical patent/KR101825740B1/en
Publication of KR20170071264A publication Critical patent/KR20170071264A/en
Application granted granted Critical
Publication of KR101825740B1 publication Critical patent/KR101825740B1/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
    • F16L21/02—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
    • 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

Abstract

Disclosure of the Invention The present invention relates to a pressure roller for preventing deviation of a tubular body. A pressure roller for releasing a tube, comprising: a housing having a tube body inserted into a through hole and forming an insertion hole around the tube; a coupling bolt inserted into the insertion hole and fastened to the adjacent tube body by a nut, And a position fixing unit for pressing the tubular body against the tubular body to fix the position of the tubular body.

Description

[0001] PRESS WHEEL FOR PREVENTING DEPARTURE OF PIPES [0002]

[0001] The present invention relates to a pressure wheel for preventing the tube from slipping off, and more particularly, to a guide member provided in a housing and having a bending tapered surface portion formed thereon to be bent in a state in which spikes are supported along the bending tapered surface portion by tightening the fastening bolt The spike can be prevented from being separated from the outer peripheral surface of the tube, and the height of the pressure blade formed on the spike can be made different from each other to prevent the tube from being separated from the tube despite vibration and settling. And relates to a rolling-off preventing wheel.

Generally, the pipe for the water supply has a large diameter and a high pressure of water pressure. When the pipe is connected with the cast iron pipe, leakage and dropping due to the high pressure and external impact are generated. Therefore, A bar, a type of fitting for connecting the tube to the connection portion of the tube body and the pipe body, is used.

As is known in the art, a plurality of tightening bolts are radially provided on the housing, and the spike, which has a blade shape at one end and has a blade shape, is pressed by the tightening bolt to press the outer surface of the tube. And the tubular body is fixed to the tubular body and the tubular body is connected and coupled by the connecting bolt.

On the other hand, the spike coupled to the inner circumferential side of the housing of the conventional detachment prevention rolling wheel is seated on the insertion hole formed on the inner circumferential side of the pressure roller. The spike has a catching jaw formed thereon, The fastening bolt to be coupled is supported at its tip to form a support head so as to be slidably engaged with the engaging jaw so as to prevent the spike from being released.

But. In the conventional detachment prevention rolling wheel, the tightening bolt fastened in the housing is fastened vertically with respect to the longitudinal direction of the tubular body so that the edge of the spike flares the circumferential surface of the tubular body to firmly hold the tubular body. However, A gap is formed between the spike and the guide portion of the housing, so that the flow of the spike can not be controlled and the flow is generated in the tube. If the tube is used for a long time, a gap is generated in the tube, .

Further, conventionally, since the blade formed on the spike has the same height, when a flow occurs in the tubular body due to subsidence, vibration, ground bumps, etc. after assembling the tubular body using the release preventing pressure rollers, the tubular body is separated or the binding force is weakened There is a problem.

Therefore, there is a need to improve this.

The background art of the present invention is disclosed in Korean Patent Registration No. 10-1393913 entitled " Roller for connecting pipes, 2014.05.02: Registered ".

The guide body is formed in the housing with an angle of about 10 to 30 degrees with respect to the longitudinal direction of the tube, and a curved tapered surface portion is formed in the guide body, The spikes are bent along the bending tapered surface by the tightening so as to bend, and the spikes are closely attached to the outer peripheral surface of the tubular body, thereby preventing the tubular body from being separated from the tubular body. The object of the present invention is to provide a pressure roll for preventing the tube from coming off.

According to an aspect of the present invention, there is provided a pressure wheel for preventing detachment of a tubular body, the tubular body including: a housing having a tubular body inserted into a through hole and forming an insertion hole around the tubular body; A coupling bolt inserted into the insertion hole and fastened by a nut to be engaged with a neighboring tubular body; And a position fixing part disposed between the insertion holes and being tightly pressed against the tubular body according to tightening to fix the position of the tubular body.

The position fixing unit may further include: a guide body provided in the housing, the guide body having a space portion on the body side; A screw hole penetratingly formed in the guide body in the longitudinal direction of the tubular body; A tightening bolt fastened to the screw hole and sloping toward the tubular body through the space; And a spike which is installed in the space and moves in an inclined manner toward the circumferential side of the tubular body according to the tightening of the tightening bolt, and the pressing blade is pressed and fixed.

In addition, the spike is pressed and fixed to the peripheral side of the tube gradually as the fastening bolt is fastened by the contact supporting force of the pressing force increasing portion.

The pressing force increasing unit may include a curved tapered surface portion formed on an inner circumferential surface of the guide body and formed to have an inclined bending toward the tubular body from the screw hole.

The pressing force increasing unit may further include a curved guide surface formed on the upper surface of the spike so as to be bent obliquely so as to be in close contact with and contact with the curved tapered surface.

Further, the bending tapered surface portion is a surface corresponding to an arc shape having a rotation center at a reference point (P) in the direction of the tightening bolt head from the center line (L) of the tube.

Further, the tightening bolt and the spike are fixed to each other by the insertion fixing portion.

In addition, the insertion and fixing portion may include: a latching jaw having an insertion groove portion formed in an end portion of the tightening bolt; A slot groove portion formed downward from an upper surface of the spike to insert the insertion groove; And a locking groove portion formed to be wider than the slotted groove portion so that the latching jaw portion is caught and formed to be depressed downward from the upper surface of the spike.

The pressing blade may include: a first pressing blade formed at the center of the bottom surface of the spike and deeply inserted into the tube; A second pressing blade provided at a front side of the first pressing blade and formed to be smaller than a protrusion length of the first pressing blade and being stuck to the tubular body at an intermediate depth; And a third pressing blade provided at a rear side of the first pressing blade and formed to be smaller than a protruding length of the second pressing blade so as to be stuck at a low depth in the tube body.

Further, the spike is closely supported by the tightly fixed portion as it enters the space.

Further, the tightly fixed portion may include a side contact portion which is narrowed toward the front side on both side surfaces of the spike; And a contact surface portion formed to be narrower at both side surfaces of the space portion at a larger inclination angle than the side contact portion and to prevent the flow of the spike by being brought into close contact with the side contact portion as the introduction of the spike is made. do.

The teeth according to the present invention are characterized in that the angle of the guide body is set in the range of 10 to 30 degrees with respect to the longitudinal direction of the tubular body in the housing and the curved tapered surface portions are formed in the guide body, The bending tapered surface portion of the tubular body is gradually bent as the fastening is performed, so that the pressing blade of the spike is tightly engaged with the outer peripheral surface of the tubular body.

Further, according to the present invention, the height of the pressing blade formed on the spike can be made different from each other to prevent separation from the tube body in spite of vibration and sinking.

Further, according to the present invention, since the side contact portions of the spikes are brought into close contact with each other when they enter the contact surface portions formed on both side surfaces of the guide body, the spikes after assembling can be prevented from swaying and side support force can be provided.

1 is an exploded perspective view of a front surface of a pressure wheel for preventing separation of a tube according to an embodiment of the present invention.
2 is an assembled perspective view of FIG.
FIG. 3 is an exploded perspective view of a recessed portion of a release preventing pressure wheel according to an embodiment of the present invention.
4 is a rear exploded perspective view of a recess of a relief preventing ring according to an embodiment of the present invention.
FIG. 5 is a partially cutaway perspective view of a guide body according to an embodiment of the present invention, in which spikes are separated. FIG.
6 is a cross-sectional view showing a curved state of a curved tapered surface portion of a pressing force increasing portion according to an embodiment of the present invention.
FIG. 7 is a cross-sectional view showing a state where a spike moves in a guide body by a bolt according to an embodiment of the present invention and is coupled to a pipe body.
8 is a cross-sectional view showing a state before the spike moves to the pipe body in the guide body by the bolt according to the embodiment of the present invention.
9 is a cross-sectional view showing a state in which a spike according to an embodiment of the present invention is closely attached by a tightly fixed portion provided on a guide body of a modification example and assembled to a tube body.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a pressure roller for preventing a tube from falling out according to an embodiment of the present invention will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is an exploded perspective view of a front surface of a pressure wheel for preventing detachment of a tube according to an embodiment of the present invention, FIG. 2 is an assembled perspective view of FIG. 1, FIG. 5 is a partially cutaway perspective view showing a spike separated from a guide body according to an embodiment of the present invention, and FIG. 6 is a perspective view Sectional view showing a curved state of a bending tapered surface portion of a pressing force increasing portion according to an embodiment of the present invention.

FIG. 7 is a cross-sectional view showing a state in which a spike moves in a guide body by a bolt according to an embodiment of the present invention and is coupled to a pipe body. FIG. 8 is a cross- FIG. 9 is a cross-sectional view showing a state in which the spike according to an embodiment of the present invention is closely attached by the tightly fitting portion provided on the guide body of the modification example, Sectional view.

Referring to FIGS. 1 to 9, a pressure drop preventing wall according to an embodiment of the present invention includes a housing 100, a coupling bolt 200, and a position fixing portion 300.

The housing 100 has a structure in which the tube 50 is inserted into the through hole 110 and the insertion hole 120 is formed around the tube.

The housing 100 is configured to connect one tubular body 50 and another adjacent tubular body 50 to each other to prevent the tubular body 50 from being separated. At this time, since the packing member 60 is inserted between one of the tubes 50 and the adjacent one of the tubes 50, the fluid flowing into the tube 50 can be prevented from leaking.

The tubular body 50 is preferably a cast iron pipe for water supply. Of course, it is possible to employ various kinds of pipes used for various purposes as needed.

The position fixing unit 300 is disposed between the insertion holes 120 and tightly pressed against the tubular body 50 by tightening to fix the position of the tubular body 50.

The position fixing unit 300 includes a guide body 310 provided in the housing 100 and having a space 320 on the side of the tube body 50 and a guide body 310 formed on the guide body 310 for passing through the tube body 50 in the longitudinal direction A tightening bolt 340 fastened to the screw hole 330 and moving obliquely toward the tubular body 50 through the hollow portion 320 and a fastening bolt 340 fastened to the hollow portion 320, And a spike 350, which moves obliquely toward the peripheral side of the tube 50 and is pressed and fixed by the pressing blade 360.

The guide body 310 is formed in the shape of a rectangular case with its bottom opened. Although six guide bodies 310 are formed in the space between the insertion holes 220 of the housing 100, the number of the guide bodies 310 formed in the housing 100 can be increased or reduced as needed. In the drawings of the present invention, six insertion holes 120 are also formed.

Since the space 320 is longer than the length of the spike 330, the pressing blade 360 of the spike 350 moves obliquely as the tightening bolt 340 is fastened at the screw hole 330, The assembly is completed.

The guide body 310 may be inclined at an angle of 10 to 30 degrees with respect to the longitudinal direction of the tube 50. In particular, it is most preferable that the guide body 310 is formed in an angular range of about 20 degrees with respect to the longitudinal direction of the tube 50.

The screw hole 330 is formed to be inclined at an angle range of 10 to 30 degrees with respect to the longitudinal direction of the tube 50 in the guide body 310. As a result, the tightening bolt 340 fastened to the screw hole 330 is also tilted to an angle range of 10 to 30 degrees so that the spike 350 installed at the end of the tightening bolt 330 is inclined And is tightly fixed to the peripheral side of the tubular body 50 while moving.

The tightening bolt 340 is securely fixed to the side surface of the guide body 310 so that the head of the tightening bolt 340 does not contact the side surface of the guide body 310 even if the spike 250 moves in the space 320 and is fixed around the tube body 50 Length.

The spike 350 is formed to be smaller than the size of the space 320. One or more pressing blades 360 formed on the bottom surface of the spike 350 are formed and tightly fixed to the circumferential side of the tubular body 50 with a slight dent. As a result, the tightening bolts 340 are prevented from being separated arbitrarily by the compression bonding of the spikes 350.

The spike 350 is pressed and fixed to the peripheral side of the tubular body 50 more gradually as the fastening bolt 340 is fastened by the contact supporting force of the pressing force increasing portion 400. [

The pressing force increasing unit 400 has the effect of moving the spike 350 to the peripheral side of the tubular body 50 at a larger inclination angle as the tightening bolts 340 are tightened so that the binding force to the peripheral side of the tubular body 50 It is to increase.

The pressing force increasing part 400 includes a curved tapered surface part 410 which is formed on the inner circumferential surface of the guide body 310 and which is inclined and curved toward the tube 50 side from the screw hole 330. Since the curved tapered surface portion 410 is formed to be inclined and curved toward the peripheral side of the tube 50, the inclination angle of the surface away from the screw hole 330 becomes larger than the surface adjacent to the screw hole 330.

The pressing force increasing portion 400 includes a curved guide surface portion 420 that is formed to be bent obliquely on the upper surface of the spike 350 so as to be in contact with and contact with the curved tapered surface portion 410.

The curved guide surface portion 420 is preferably formed corresponding to the curvature of the curved tapered surface portion 410.

like this. Since the bending tapered surface portion 410 is formed to be inclined and curved toward the peripheral side of the tubular body 50, the inclination angle of the surface away from the screw hole 330 becomes larger than the surface adjacent to the screw hole 330, The bending guide surface portion 420 is pressed by the bending tapered surface portion 410 so that the front end portion of the spike 350 is bent as the spike 350 moves toward the circumferential side of the tubular body 50. As a result, 360 are stuck to the circumferential surface of the tubular body 50. As a result, the coupling force of the spike 350 at the tube 50 is further increased.

Referring to FIG. 6, the bending tapered surface portion 410 is a surface corresponding to an arcuate shape in which the center of rotation of the tube 50 is a center of rotation of a reference point P in the head direction of the fastening bolt 340. The radius of curvature R1 of the arc for forming the curved tapered surface portion 410 from the reference point P is preferably 20 to 40% larger than the radius R2 of the tube 50. Particularly, it is most desirable to form about 30% larger. For example, when the radius R2 of the tube 50 is 163 mm (diameter 326 mm), the turning radius R1 of the bending tapered surface portion 410 from the reference point P is about 212.85 mm, about 30% larger Is most preferable.

The tightening bolts 340 and the spikes 350 can be mutually fixed by the insertion fixing part 500. The insertion fixing part 500 is inserted and fixed in a sliding manner.

The insertion fixing part 500 includes a locking step 510 having an insertion groove part 512 formed at the end of the tightening bolt 340 and a locking step part 512 extending downward from the upper side of the spike 350 to insert the insertion groove part 512 And a locking groove portion 530 which is connected to the slot groove portion 520 so as to engage with the engaging jaw portion 510 and is depressed downward from the upper surface of the spike 350.

6 to 8, since the width W1 of the latching groove portion 530 is larger than the width W2 of the latching portion 510 when viewed from the side of the spike 350, Is slightly rotated so as to be able to enter the bending state while being bent along the bending tapered surface portion (410) according to the tightening of the tightening bolt (340).

When the slot groove portion 520 of the spike 350 and the groove portion 530 of the spike 350 are inserted into the insertion groove portion 512 of the tightening bolt 340 and the engaging shoulder portion 510, the spike 350 is sloped The engaging groove portion 530 is inclinedly engaged with the engaging jaw portion 510 so that it is prevented from dropping downward due to its own weight.

5 and 7, the pressing blade 360 includes a first pressing blade 362 formed at the center of the bottom surface of the spike 350 so as to be deeply inserted into the tube 50 and a second pressing blade 362 formed at the front side of the first pressing blade 362 A second pressing blade 364 which is provided on the rear side of the first pressing blade 362 and formed so as to be smaller than the protruding length of the first pressing blade 262 so as to be inserted into the tube 50 at an intermediate depth, And a third pressing blade 366 which is formed to be small in comparison with the projecting length of the second pressing blade 364 and stuck to the tube 50 at a low depth.

As the protruding lengths of the first pressurizing blade 362, the second pressurizing blade 362 and the third pressurizing blade 366 are different from each other, the tilting angle of the tube 50 by the ground subsidence, vibration, It is possible to prevent the tubular body 50 from being separated or separated from the spike 350.

 9, as the spike 350 enters the space 320 of the guide body 310, the spike 350 can be closely supported in the space 320 by the tight fitting portion 600.

The tight fitting part 600 is formed on both sides of the spike 350 so as to be narrow on both side surfaces of the space part 320 with a larger inclination angle than the side contact part 610 And an adhered surface portion 620 that is in close contact with the side contact portion 610 to prevent the flow of the spike 350 as the entrance of the spike 350 is performed.

That is, as the spike 350 is hardly brought into contact with the close contact surface portion 620 at the start point of the tightening bolt 340 and the side contact portion 610 is almost in contact with the tightening bolt 340, 610 are in close contact with the contact surface portion 620 to prevent the spike 350 from being sideways.

 The tightly fitting part 500 tightens the tightening bolts 340 in the space part 32 and the moment the pressing blade 360 of the spike 350 is fixed on the circumferential surface of the tube 50, 350 are firmly brought into close contact with the close contact surface portion 620 of the space portion 320 so that the side contact portions 610 are tightly adhered to the left and right sides with no gap therebetween. Thereby, it is possible to prevent not only the upward and downward flows but also the left and right flows of the spikes 50 even after the spikes 350 are coupled to the tubular body 50.

Therefore, in the pressure roll for preventing the tube from falling off according to the embodiment of the present invention, the guide body is formed in the housing in the range of 10 to 30 degrees with respect to the longitudinal direction of the tube body, and the guide body is formed with the tapered surface portion As the upper surface contact portion of the spike is supported by the tie surface portion by tightening the tightening member, the tongue is gradually bent as the tightening is performed, and the pressure blade of the spike is closely contacted to the outer peripheral surface of the tube.

Further, according to the present invention, the height of the pressing blade formed on the spike can be made different from each other to prevent separation from the tube body in spite of vibration and sinking. Further, according to the present invention, the side contact portions of the spikes are brought into close contact with the contact surface portions formed on both side surfaces of the guide body, thereby preventing the spikes from being swayed after assembling, and being provided with side support force.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

Accordingly, the true scope of protection of the present invention should be defined by the following claims.

50: tube 100: housing
110: Through hole 120: Insert hole
200: coupling bolt 210: nut
220: hook portion 300: position fixing portion
310: guide body 320:
330: screw hole 340: fastening bolt
350: Spike 360: Pressurized blade
362: first pressing blade 364: second pressing blade
366: third pressing blade 400: pressing force increasing portion
410: curved tapered surface portion 420: curved guide surface portion
500: insertion fixing part 510: latching part
512: insertion groove portion 520: slot groove portion
530: latching groove portion 600:
610: side contact portion 620:
P: reference point L: center line

Claims (11)

A housing having a tubular body inserted into the through hole and forming an insertion hole around the tubular body;
A coupling bolt inserted into the insertion hole and fastened by a nut to be engaged with a neighboring tubular body; And
And a position fixing unit disposed between the insertion holes and being tightly pressed against the tubular body according to the engagement to fix the position of the tubular body,
Wherein the position fixing portion comprises:
A guide body provided in the housing, the guide body having a space portion on the tubular body side;
A screw hole penetratingly formed in the guide body in the longitudinal direction of the tubular body;
A tightening bolt fastened to the screw hole and sloping toward the tubular body through the space; And
And a spike that is installed in the space and is slidably moved toward the peripheral side of the tubular body as the tightening bolt is tightened and the pressing blade is pressed and fixed,
The spikes are pressed and fixed to the peripheral side of the tubular body gradually as the tightening bolts are fastened by the contact supporting force of the pressing force increasing portion,
The pressure-
A curved tapered surface portion formed on an inner circumferential surface of the guide body, the curved tapered surface portion being inclined and curved from the screw hole to the tubular body side; And
And a curved guide surface portion formed on the upper surface of the spike so as to be bent obliquely so as to be in intimate contact with the curved tapered surface portion,
The bending tapered surface portion is a surface corresponding to an arcuate shape having a rotation center at a reference point (P) in the direction of the head portion of the tightening bolt from a center line (L)
The bending tapered surface portion is formed to have a greater inclination angle of a surface remote from the screw hole than a surface adjacent to the screw hole. When the tightening bolt is tightened, as the spike moves toward the circumferential side of the tubular body, The pressing blade is pushed around the tubular body in a rotating state in which the front end of the spike is pushed by the tapered surface portion,
Wherein a radius of rotation (R1) of an arc for forming the curved tapered surface portion from the reference point (P) is 20 to 40% larger than a radius (R2) of the tube.
delete delete delete delete delete The method according to claim 1,
Wherein the tightening bolt and the spike are fixed to each other by an insertion fixing portion.
8. The method of claim 7,
The insertion /
An engaging jaw having an insertion groove portion formed in an end portion of the tightening bolt;
A slot groove portion formed downward from an upper surface of the spike to insert the insertion groove;
And a latching groove portion formed to be wider than the slotted groove portion to engage with the latching jaw portion and formed to be depressed downward from an upper surface of the spike;
Wherein the tubular body is made of a metal.
The method according to claim 1,
The pressing blade
A first pressing blade formed at the center of the bottom surface of the spike and being deeply inserted into the tube;
A second pressing blade provided at a front side of the first pressing blade and formed to be smaller than a protrusion length of the first pressing blade and being stuck to the tubular body at an intermediate depth; And
A third pressing blade provided at a rear side of the first pressing blade and formed to be smaller than a protruding length of the second pressing blade so as to be inserted into the tube body at a low depth;
Wherein the tubular body is made of a metal.
The method according to claim 1,
Wherein the spike is tightly supported by the tightly fixed portion as it enters the space.
11. The method of claim 10,
The tightly-
Side contact portions that are narrowed toward the front side on both side surfaces of the spike; And
And a contact surface portion formed to be narrower at both side surfaces of the space portion at a larger inclination angle than the side contact portion and to be in close contact with the side contact portion to prevent the flow of the spike as the introduction of the spike progresses
Wherein the tubular body is made of a metal.
KR1020150179396A 2015-12-15 2015-12-15 Press wheel for preventing departure of pipes KR101825740B1 (en)

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Application Number Priority Date Filing Date Title
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KR101825740B1 true KR101825740B1 (en) 2018-02-05

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Publication number Priority date Publication date Assignee Title
KR102052645B1 (en) * 2019-09-02 2019-12-06 케이제이씨 주식회사 Water supply pipe clamp with seismic function

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010270847A (en) * 2009-05-22 2010-12-02 Cosmo Koki Co Ltd Movement prevention means

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010270847A (en) * 2009-05-22 2010-12-02 Cosmo Koki Co Ltd Movement prevention means

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