KR20160005892A - Press wheel for mechanical joint - Google Patents

Press wheel for mechanical joint Download PDF

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Publication number
KR20160005892A
KR20160005892A KR1020140084937A KR20140084937A KR20160005892A KR 20160005892 A KR20160005892 A KR 20160005892A KR 1020140084937 A KR1020140084937 A KR 1020140084937A KR 20140084937 A KR20140084937 A KR 20140084937A KR 20160005892 A KR20160005892 A KR 20160005892A
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KR
South Korea
Prior art keywords
bolt
spike
hexagonal
thread portion
nut
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KR1020140084937A
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Korean (ko)
Inventor
임공영
Original Assignee
주식회사 조흥밸브앤파이프
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Priority to KR1020140084937A priority Critical patent/KR20160005892A/en
Publication of KR20160005892A publication Critical patent/KR20160005892A/en

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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

A spike housing capable of receiving spikes is formed in a radial direction on a cylindrical ring body, and a water pipe and a spigot of a water pipe adjacent to the inside of the ring body are coupled to each other. Wherein the spike center portion is formed with a tab in a propelling direction and the crimping bolt is formed in a shape of a headless bolt, and the crimping bolt And an outer screw portion is formed at the rear end of the compression bolt and a discontinuous outer screw portion is formed at the rear end of the compression bolt, and two hexagon nuts are fastened between the outer threads of the outer screw portion, The threaded portion is all wrapped by two hexagonal nuts, Wherein a screw having an opposite direction to the screw thread direction is formed on the side thread portion, and a first hexagon nut for driving the compression bolt is fastened to an inner side of the screw thread, and a diagonal length between the corners of the first hexagon nut is interposed between the first hexagon nut And a second hexagonal nut smaller than the diagonal length is fastened.

Description

{PRESS WHEEL FOR MECHANICAL JOINT}

More particularly, the present invention relates to an anti-departure prevention roller, and more particularly, to an anti-departure prevention roller, in which a water pipe adjacent thereto is connected by a mechanical joint in a mechanical joint manner, And the side pipe is fixed so as not to be detached from the water pipe side even if vibration due to water impact, earthquake, or ground change occurs at the pipe installation point.

Waterworks Water impacts occur from time to time near water purification plants or pumping stations. In the event of water impact, the water pressure temporarily increases to 30Kgf / ㎠-50Kgf / ㎠, which affects the water pipe connection. In case of the inflow of soil or sediment to the lower part of the water pipe, the inflow of ground water to the lower part of the pipe or the discharge of the ground water, and the construction of the underground facilities at the lower part of the pipe or nearby, there occurs a ground bump or a ground settlement around the water pipe. The piping is tilted and the water piping joint is deflected. When an earthquake occurs, the vibration directly acts on the joint of the water pipe. In connecting the water piping, mechanical joints having a certain degree of elasticity are used in order to prepare for water shock, ground bumps, ground subsidence, earthquakes and the like. In recent years, mainly mechanical joints are used, in which a spigot (straight pipe shape) of two adjacent pipes is inserted into a cigarette (socket shape) for a certain length, and a gasket is press-fitted therebetween to secure the water tightness of the joint. At this time, the inner ring for pressing the gasket and the outer ring for enclosing the outer side of the joint portion are connected at one end to the continuous surface (the cross-section has a rough shape) and the joint surface has a bolt hole for jointing. A tuck is formed on the outside of the socket of the water cigarette, and a joint bolt (hereinafter referred to as "hook bolt") having a hook formed at the tip thereof is used to tighten the hook of the hook bolt to the jaw Then, the bolts are passed through a bolt hole for jointing of the pressure contact surface and fastened with a nut (see FIG. 8). In such a mechanical joint structure, when the spigot and the water gauge are fixed only by the compression of the gasket sandwiched therebetween, the bendability at the joint portion is secured to some extent, but the water shock, the ground bump or the ground subsidence, , The spigot easily separates from the water dispenser. Therefore, in mechanical joints, spikes and squeeze bolts of various structures are provided to prevent the spit from coming off from the water cigarette. Such spikes and pressure rolls having crimping bolts are generally referred to in the industry as release-preventing rollers.

Conventionally, spikes and compression bolts used in anti-departure rollers have not only a structure and strength that can prevent the tube from coming off even when a large water impact, a ground bump, a ground settlement, or an earthquake occurs, There should be no problems in pipe fitting work.

Korean Registered Utility Model Bulletin 20-0202096, Korean Public Utility Model Bulletin 2000-0005238, Registered Korean Utility Model Bulletin 20-0223610, Registered Korean Utility Model Bulletin 20-0181317, Registered Korean Utility Model Bulletin 20-179436, Korean Registered Utility Model As disclosed in JP-A-20-202098, conventionally, as a compression bolt of a conventional release-preventing pressure roller, a disc-shaped head and a thin neck for coupling to a spike are formed continuously in the vicinity of the tip, and a hexagonal Hexagonal head bolts whose head is formed integrally with the bolts have been mainly used. In order to assemble the spike to the spike housing, a tab is formed on the outer side of the spike housing. The hexagonal head bolt is screwed into the tab from the outer side to the inner side so that the hexagonal head bolt penetrates deeply into the inside of the wheel. The spike is joined to the disk head and neck of the head of the head bolt, and the hexagon head bolt is turned in the opposite direction so that the spike protrudes outwardly of the wheel so that the spike is seated on the spike housing. Therefore, the screw section of the hexagonal head bolt must be very long, and a large part of the screw of the hexagonal head bolt must be exposed to the outside when the spike is seated in the spike housing.

However, the conventional deviation preventing rollers having the above-described structure have the following problems.

Disengagement prevention rollers disclosed in the above prior art documents have both a spike and a spike housing with a polygonal cross section so that spikes can be advanced and retracted within the spike housing but are not rotatable. Therefore, a tab is formed on the outside of the spike housing of the conventional detachment prevention rolling wheel, and the hexagonal head bolt is fastened to the spike through the tab through the outside of the spike housing. The hexagonal head bolt is screwed inward from the outside of the spike housing in order to move the spike forward and backward. The tip of the hexagonal head bolt is rotatably assembled with the rear end of the spike. The hexagonal head bolt is inserted into the hexagonal hollow socket of the impact power tool The hexagonal hollow socket is rotated externally with an impact power tool to move the spike forward or backward. In this case, the hexagonal-headed bolt is rotated by the hexagonal hollow socket and the impact power tool without manually rotating the bolt in order to fasten all the spikes attached to the release-preventing roller with a certain pressing force and to accelerate the fastening operation. As described above, in order for the spike to be seated in the spike housing, the hexagonal head bolt must be moved backward as far as possible. As a result, the screw thread of the hexagonal head bolt must be very long. Therefore, Most of the bolts are exposed to the outside from outside the roll. Particularly, when the hexagonal head bolts of the release preventing rollers are laminated in a state of being backward outward, the lower rollers of the laminated rollers are stacked on the lower side of the rollers. Thereby damaging the screw formed on the body of the hexagonal head bolt. Even in the course of work, the screws of the hexagon head bolt are likely to collide with the installation tool. As a result, when an impact power tool is used to tighten a pressure ring at a pipe joint site, the hexagonal head bolt does not advance, so that the pressure tightening can not be performed very frequently. In addition, when the screw section of the hexagonal head bolt is exposed to the outside, the operator is liable to be injured by the contact with the thread during the construction, such as stabbing. In other words, it is very difficult to handle the deviation preventing rollers using conventional hexagonal head bolts, such as proper storage, transportation, and construction.

The hexagonal head bolts described in the above prior arts have a great problem in terms of product reliability and durability as well as handling disadvantages such as storage, transportation and construction. As described above, the hexagonal head bolt described in the above prior art has a disk-shaped head for coupling to the spike near the tip and a thin neck continuous thereto, and the disk-shaped head and neck are fixed to the fastening groove formed in the upper portion of the spike and the fastening jaw Push and combine. Therefore, the spike is easily detached from the hexagon head bolt during storage, transportation, and construction. In addition, the disk-shaped head and neck of the hexagonal head bolt are very vulnerable to shock applied to the spike, since they are only required to be formed thinly in order to engage with the upper coupling groove and the coupling jaw of the spike. In particular, water pressure can rise temporarily to 30Kgf / ㎠-50Kgf / ㎠ at the point where water impact occurs occasionally, such as near a water purification plant or a pumping station. At this time, the neck connecting spike and hexagon head bolt breaks easily. In addition, even when large bending occurs due to ground uplift or ground settlement due to the inflow or outflow of the earth to the lower part of the piping, the inflow or outflow of the groundwater to the lower part of the piping, or the construction of the underground facilities, if a strong pressure is applied to the spike, The neck that connects the neck easily breaks. Also, even if vibration occurs due to an earthquake or water pressure fluctuation, if the vibration intensity deviates from the threshold value, the neck connecting the spike to the hexagon head bolt easily breaks. Thus, when the spike is detached from the hexagonal head bolt or the hexagonal head bolt is damaged and the spike is detached, the spigot does not fix the spigot, so that the spigot is released and leakage occurs at the pipe joint.

Various inventions for solving the disadvantages of the hexagonal head bolt and spike coupling structure have been made, and examples of the invention are disclosed in Japanese Patent Application Laid-Open Nos. 10-2009-0092855 and 10-2011-0053067 .

A bolt formed integrally with a screw portion engaged with the screw hole, a locking portion and a bolt head fixing portion; And a bolt head having an engaging hole formed therein. In this invention, a through hole is drilled on the outside of the spike housing to connect the bolt from the inside of the spike housing to the outside, the spike is screwed to the threaded portion of the bolt by the left screw, Combine the bolt head in a forced fit. However, according to the present invention, when the hexagonal hollow socket is inserted into the head of the bolt and the bolt head and the bolt are rotated by the amphototactic tool, the bolt head easily disengages . If the bolt head detaches, the bolt will not be able to rotate, and if the bolt can not be rotated, the spike will not be able to be tightened or released to the pipe.

10-2011-0053067 Invention The invention is the same as the invention of the 10-2009-0092855 in that the spike and the press bolt are screwed to the left screw, but only the outer thread of the press bolt is formed with the un- The head portion is coupled to the outer end portion of the press bolt, and when the head portion is continuously rotated in the state where the head portion is engaged, the pressing bolt is rotated to propel the spike toward the water supply observation . However, according to the invention of No. 10-2011-0053067, when the head portion is turned in the opposite direction to reverse the spike, the head portion is detached from the pressure bolt, and once the spike is fastened, the spike fastening is released, There is a drawback that the state can not be modified.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-described problems of the conventional deviation preventing rollers. The first problem to be solved by the present invention is that once the screws are assembled into a rolling wheel, the screws of the crimping bolts for propelling the spike are not exposed to the outside, Which is capable of advancing and retracting the spike without detaching the bolt head or the head portion by using the hexagonal hollow socket and the impact power tool without any fear of damaging the threaded portion of the bolt head or the head portion.

A second problem to be solved by the present invention is to provide an anti-departure rolling wheel which can maintain a state of pipe joining without damaging even a high-pressure water impact acting in the pipe.

The third problem to be solved by the present invention is to prevent the inflow or outflow of the soil from the pipe joint to the lower portion of the pipe, the inflow or discharge of the groundwater to the lower portion of the pipe, Even when the pipe is inclined, it is possible to keep the pressurized state and the pipe connection state in a continuous manner.

A fourth problem to be solved by the present invention is to provide an anti-departure pressure wheel which can maintain a state of pipe jointing without damaging even when vibrations due to earthquakes, water pressure fluctuations or the like are severely applied to pipe joints.

According to the present invention, a spike housing capable of receiving spikes is formed in a cylindrical shape in a radial direction, a water pipe and a spigot of a water pipe adjacent to the inside of the cylindrical body are coupled, Wherein the spike center portion is formed with a tab in a propelling direction, the crimping bolt is formed in the shape of a headless bolt, and a tip of the crimping bolt And an outer threaded portion is formed at a rear end of the compression bolt and a discontinuous outer threaded portion is formed at a rear end of the squeezing bolt, and two hexagonal nuts are fastened between the outer threaded portion and the outer threaded portion, All of which are enclosed by two hexagonal nuts, Wherein the first hexagon nut for driving the compression bolt is fastened to an inner section of the screw, and a diagonal length between the corners is longer than an inter-surface diagonal length of the first hexagon nut It can be solved by fastening a small second hexagon nut.

Particularly, a third object of the present invention is to provide a spike housing in which a through hole is formed in the spike housing so that the compression bolt can be inserted into the spike housing with clearance therebetween, and the compression bolt is inserted into the spike housing from the inside of the spike housing And a shaft which is coupled to the through hole and is rotatable is formed between the jaw and the outer threaded portion, and the shaft portion is formed between the jaw and the outer threaded portion, Wherein the second half of the jaw is formed to have a spherical surface and the perimeter of the through hole on the inner surface of the spike housing contacting the rear half of the jaw is formed to have a spherical surface corresponding to the spherical surface, It is possible to solve the problem more effectively by making it possible to roll around the spherical surface.

According to the present invention, the first hexagonal nut and the second hexagonal nut are coupled to the outer thread portion of the compression bolt in a state where the spike is completely fastened to the inner thread portion of the compression bolt, and the hexagonal hollow socket Is inserted outside the first hexagon nut and the second hexagon nut to turn the impact power tool in the direction in which the spike advances. At first, only the first hexagon nut advances a little along the thread of the outer thread portion. When reaching the thread tip, The nut can no longer advance and the first hexagon nut and the entire compression bolt are rotated so that the inner thread of the compression bolt advances the spike in the same direction as the first hex nut first advances, , Only the first hexagon nut moves slightly backward along the thread of the outer thread portion, and then the first hexagon nut When the nut is brought into contact with the second hexagonal nut, the first hexagonal nut can no longer move backward, and the first hexagonal nut and the entirety of the compression bolt rotate, so that the inner thread portion of the compression bolt advances the spike in the backward direction. As described above, according to the present invention, the propulsion (propulsion) of the spike is not made by the tab formed on the spike housing and the screw formed between the whole of the hexagonal head bolt, but by the tab formed on the inner thread portion of the compression bolt and the spike in the spike housing Therefore, the problem of difficulty in tightening the spikes due to the screw damage does not occur. In addition, since the screw is not exposed to the outside because the outer thread portion of the compression bolt is fastened to the first hexagon nut and the second hexagon nut, there is no fear that the construction worker will come in contact with the thread to damage the body such as stabbing . In addition, since only the first hexagon nut and the compression bolt are driven by the impact power tool and the second hexagon bolt is not driven, when the impact power tool is driven in the direction to reverse the spike, . According to the present invention, there is no need to form a thin neck on the crimping bolt for connecting the spike and the crimping bolt, and the spike and the crimping bolt combination are arranged on the shaft portion of the crimping bolt, And rolling is smoothly performed at the contact surface between the jaw formed in the compression bolt and the inner surface of the spike housing. Therefore, even when the high-pressure water impact acting on the pipe is not damaged, In case of inflow or outflow of the soil to the lower part of the pipe from the pipe joint part, inflow or outflow of the groundwater to the lower part of the pipe, inflection of the pipe connection part or inclination of the pipe due to ground bump or subsidence due to underground facility construction And a spike-like gripping state followed by refraction or tilting within a certain range And even if vibration due to earthquake or water pressure fluctuates very much at the pipe joint part, the vibration can be absorbed within a certain range and it is possible to maintain the pipe joint condition without being damaged .

Fig. 1 is a partially exploded perspective view showing a spike of a release preventing roller according to the present invention, a compression bolt, a first hexagon nut, and a second hexagon nut.
FIG. 2 is a partially exploded perspective view showing a disassembled spike, a compression bolt, a first hexagon nut, and a second hexagon nut together with a hexagonal hollow socket of a release preventing pressure roller according to the present invention.
FIG. 3 is a partially assembled perspective view of the spike, the compression bolt, the first hexagon nut, and the second hexagon nut shown in FIG. 1 together with the hexagonal hollow socket.
4 is an exploded perspective view showing a method of assembling the spike, the compression bolt, the first hexagon nut, and the second hexagon nut shown in Fig.
5 is an assembled perspective view of a release-preventing pressure wheel according to the present invention.
6 is a cross-sectional view showing a state where the spike is advanced by using the impact power tool and the hexagonal hollow socket in the deviation preventing pressure wheel shown in Fig.
FIG. 7 is a cross-sectional view showing a state in which the spike in the deviation preventing pressure wheel shown in FIG. 5 is reversed using the impact power tool and the hexagonal hollow socket.
8 to 10 are use state diagrams of the deviation preventing pressure roller according to the present invention.

8 to 10, the release preventing pressure roller according to the present invention includes a spigot 31 inserted into a water inlet 29 of an adjacent pipe, and the spikes 1 ) Is pressed against the surface of the spout (31) to fix the spout (31) so as not to come off the water receptacle (29). 4 and 5, the lock body 19 has an inner ring 25 for pressing a gasket (reference numeral 30 in FIG. 8) and an outer ring 27 formed with a connecting bolt hole 21 And a spike housing 15 radially formed between the inner ring 25 and the outer ring 27 to receive the spike 1 and the compression bolt 7 therein.

As shown in FIGS. 1 to 3, a tap LS2 is formed in the center of the spike 1 in the propelling direction. The tabs LS2 may be formed as through-through taps as shown in the drawing, and the blades 3a to 3d may be formed as non-through tabs that are clogged. A crimp bolt 7 is coupled to the spike 1 and forces the crimp bolt 7 to rotate so that the spike 1 is advanced or retracted within the spike housing 15.

One of the features of the present invention is that the compression bolt 7 is formed in the shape of a headless bolt and the tip of the compression bolt 7 is coupled to the spike 1 to propel the spike 1 And an outer threaded portion RS1 is formed at the rear end of the outer threaded portion RS1 and two hexagonal nuts LS1 are formed between the inner threaded portion LS1 and the outer threaded portion RS1. 13 and 14 are fastened together so that the outer threaded portion is entirely enclosed by the two hexagonal nuts 13 and 14. [ Another aspect of the present invention is that the outer threaded portion RS1 forms a screw having a direction opposite to the threading direction with respect to the inner threaded portion LS1 and a first hexagonal nut 13 for driving a compression bolt is fastened to an inner portion thereof, And a second hexagonal nut 14 whose diagonal length b between the corners is smaller than the diagonal line a of the first hexagonal nut is fastened to the outside of the threaded portion RS1.

As shown in FIGS. 2 and 3, the detachment preventing roller installation worker inserts the hexagonal hollow socket 103 into the outside of the first hexagonal nut 13 and inserts the hexagonal hollow socket 103 by the impact power tool 101, The spike 1 is moved backward while the hexagonal hollow socket 103 is turned to the left when the spike 1 is to be released from the pipe. And the outer threaded portion RS1 of the squeeze bolt 7 is threaded in a direction opposite to the inner threaded portion LS1, Since it is a screw, it is preferable that it is a right screw. The first hexagonal nut 13 is coupled to the outer threaded portion RS1 of the crimping bolt 7 so that a right threaded hole RS2 is formed and the second hexagonal nut 14 is also engaged with the crimping bolt 7 The right screw hole RS3 is formed.

2 and 3, the inter-plane diagonal length a of the first hexagonal nut 13 is smaller than the inter-plane diagonal length c of the hollow 105 of the hexagonal hollow socket 103 to be used and the negative tolerance And the diagonal length b between the corners of the second hexagonal nut 14 is smaller than the diagonal length a between the first hexagonal nut and the hexagonal hollow socket 103, Only the first hexagonal nut 13 rotates together with the hexagonal hollow socket 103 and the second hexagonal nut 14 does not rotate.

2, 3 and 6, the first hexagonal nut 13 is fastened to the external thread RS1 of the fastening bolt 7 and the second hexagonal nut 14 is fastened to the fastening bolt 7 The hexagonal hollow socket 103 is inserted into the outer periphery of the first hexagonal nut 13 and the second hexagonal nut 14 so that the tightening direction 1 & cir & The first hexagonal nut 13 does not rotate along the thread of the large-diameter portion RS1 until the first hexagonal nut 13 reaches the point where the outer threaded portion RS1 terminates while the first hexagonal nut 13 rotates slightly along the thread of the outer threaded portion RS1, The rotational force of the tool 101 is transmitted to the crimp bolt 7 as it is and the first hexagonal nut 13 and the crimp bolt 7 simultaneously rotate in the tightening direction (1) The spikes 1 move in the tightening direction (1), and the outer surface of the spout 31 is squeezed into the blades 3a to 3d.

2, 3 and 7, the first hexagonal nut 13 is fastened to the inner side of the outer threaded portion RS1 of the compression bolt 7, and the second hexagonal nut 14 is compressed The hexagonal hollow socket 103 is inserted into the outer circumference of the first hexagonal nut 13 and the second hexagonal nut 14 after the bolts 7 are fastened to the outer side of the outer threaded portion RS1, The first hexagonal nut 13 is slightly rotated along the thread of the external thread RS1 and reaches the point where it contacts the second hexagonal nut 14, the second hexagonal nut 14 is blocked, The rotation force of the impact power tool 101 is transmitted to the crimp bolt 7 as it is without rotating along the external thread RS1 so that the first hexagon nut 13 and the crimp bolt 7 are simultaneously rotated So that the spikes 1 coupled to the inner threaded portion LS1 move in the releasing direction 2 while the blades 3a to 3d move to the outer surface of the spout 31 Since it is released.

4 and 8, another feature of the present invention is that a through hole (not shown) which can be inserted into the spike housing 15 with the compression bolt 7 in a clearance And when the compression bolt 7 is inserted into the spike housing 15 through the through hole 23 in the outward direction from the inside of the spike housing 15 at the rear end of the inner thread portion LS1 of the compression bolt 7, And a jaw 9 for blocking the inner thread portion LS1 from entering the through hole 23 is formed between the jaw 9 and the outer threaded portion RS1 of the crimping bolt 7, The spikes of the spikes (9) are formed to have a spherical surface (18), and the spikes of the spikes (9) are in contact with the rear half of the jaws The perimeter of the through hole 23 on the inner surface 15 is formed to have a spherical surface corresponding to the spherical surface 18 of the jaw 9 The pressing bolt 7 can be rolled around the spherical surface 18 when the water pipe 29 or the spigot 31 of the water supply pipe moves due to the rebound and sinking, I have been there.

When the spherical surface is formed not only on the rear half of the jaw 9 but also on the inner surface of the spike housing 15 in contact with the jaw 9 as well as between the jaw 9 of the compression bolt and the inner surface of the spike housing 15 Surface contact, not point contact or line contact, results in a significant reduction in friction and very smooth rolling. A sintered layer containing a solid lubricant, copper powder, and iron powder is formed on the spherical surface formed on the jaw 9 of the compression bolt, thereby further reducing friction at the spherical surface during rolling. Alternatively, a large number of small circumferential holes may be formed in the spherical surface of the jaw 9 of the compression bolt, and a small columnar solid lubricant may be filled in the surface of the compression bolt to further reduce friction at the spherical surface during rolling. As the solid lubricant, graphite may be used.

4 and 5, in assembling the spike 1 and the compression bolt 7 to the spike housing 15, first, the tab LS2 of the spike 1 is fastened to the compression bolt The inner thread portion LS1 of the spike housing 7 can be screwed and then pushed out from the inner side of the spike housing 15 from the crimp bolt 7. [ In this case, the shaft portion 23 of the compression bolt 7 is seated in the through hole 23 of the spike housing 15, and only the outer thread portion RS1 of the compression bolt 7 is located outside the through hole 23 . The first hexagonal nut 13 and the second hexagonal nut 14 are successively tightened to the outer threaded portion RS1 of the projected squeeze bolt 7 to complete the assembly.

Alternatively, when the compression bolt 7 and the spike 1 are assembled to the annular body 19, the compression bolt 7 is inserted into the through hole 23 in the outward direction from the inside of the spike housing 15, The spikes 1 are disposed inside the spike housing 15 and the crimping bolts 7 are rotated so that the outer threaded portions RS1 of the crimping bolts 7 can be projected outwardly The inner thread portion LS1 of the compression bolt 7 is screwed to the tab LS2 of the spike and finally the first hexagonal nut 13 and the second hexagonal nut 14 are screwed to the outer thread portion RS1 in order It may be concluded.

The spike 1 is coupled to the inner thread portion LS1 of the compression bolt 7 and the first hexagonal nut 13 and the second hexagonal nut 14 are fastened to the outer thread portion RS1, When the first hexagon nut 13 is rotated by the impact power tool 101 at first, the first hexagon nut 13 rotates slightly along the outer thread portion RS1 of the compression bolt 7, The first hexagonal nut 13 can not proceed further and the first hexagonal nut 13 continues to be turned strongly in this state. The entire thread is rotated together with the first hexagonal nut 13 so that the inner thread portion LS1 of the pressing bolt 7 advances the spike 1 in the tightening direction ①. At this time, the hexagonal hollow socket does not transmit the rotational force at the outer periphery of the second hexagonal nut 14, and therefore, the rotational force of the impact power tool is directly transmitted only to the first hexagonal nut 13, It is not delivered directly. 7, when the first hexagonal nut 13 is turned by the impact power tool 101 in the direction opposite to the tilting direction in order to advance the spike 1 in the unwinding direction, When the first hexagonal nut 13 and the second hexagonal nut 14 come into contact with each other, the nut 13 moves in the releasing direction (2) while rotating slightly along the outer threaded portion RS1 of the compression bolt 7. However, When the hexagon nut 13 is no longer advanced and the crimp bolt 7 is continuously turned in this state, the entire crimp bolt 7 rotates together with the first hexagon nut 13 and the inside of the crimp bolt 7 The threaded portion LS1 advances the spike 1 in the releasing direction (2).

As described above, according to the present invention, the pushing (pushing) of the spike is not made by the tab formed on the spike housing and the screw formed between the whole parts of the hexagonal head bolt, but the inside of the spike housing 15, Since the tap LS2 formed on the spike 1 is used, the difficulty of tightening the spike due to the screw damage does not occur from the beginning. Since the screws are not exposed to the outside by fastening the first hexagonal nut 13 and the second hexagonal nut 14 to the outside of the outer thread portion RS1 of the compression bolt 7, (Stabbing), etc. There is no fear of injuring the body. 10, it is not necessary to form a thin neck on the crimping bolts 7 for connecting the spike 1 and the crimping bolts 7, and the spike 1 and the crimping bolt combination can be fixed to the crimping bolts 7, It is possible to maintain the pipe joint state while absorbing the water impact without being damaged by the high-pressure water impact acting on the pipe, because the pipe 11 freely flows around the shaft 11 and the spherical surface 18 of the jaw 9, Even if large inflection occurs around pipe connection due to inflow or outflow of the earth to the lower part of the pipe from the joint part, inflow or outflow of groundwater to the lower part of the pipe, underground ridge or subsidence due to underground facility construction, etc., It is possible to maintain the jointed state without being damaged while absorbing the vibration of the pipe, and even when vibrations due to an earthquake or hydraulic pressure fluctuates extremely at the joint portion, It not is damaged as it can maintain the pipe joint state.

As described above, according to the present invention, the handleability, workability, safety, vibration absorbability, resistance to bending, water shock resistance, durability and the like of the anti-departure roll are improved.

Hereinafter, with reference to Figs. 8 to 10, a method of using the deviation preventing pressure roller according to the present invention will be described.

8, when the tap water pipe is connected by the release preventing pressure roller according to the present invention, the spigot 31 is inserted into the water inlet 29 in the inside of the cylinder, and the gasket 30 is inserted into the water inlet 29, (31), and then the hook bolt (33) is filled with the nut (35). When the nut 35 is strongly tightened, the inner ring of the pressure roller strongly pushes the gasket between the spigot 31 and the water hole 29 to secure the watertightness of the joint. At this time, the spike 1 is moved backward along the inner thread portion LS1 of the compression bolt 7 in the release direction.

9, when the pipe joint by the hook bolt 33 is completed, when the first hexagonal nut 13 is pressed against the outer surface of the spigot 31 strongly by the edges 3a to 3d of the spike 1 So that the spit 31 does not come off the water inlet 29. [

10, when the pipe moves due to inclination, high-pressure water impact, earthquake or the like around the connecting portion of the pipe, the spike (about the spherical surface in the vicinity of the through hole 23 of the spike housing 15) 1 are moved together while being closely attached to the spout 31, thereby maintaining the pipe squeezing state and effectively preventing the pipe from coming off.

1 to 10 illustrate a case in which three spike housings are used as the releasing preventing pressure rolls used in an 80 mm tube. However, when the diameter of the tube in which the anti-squeeze rollers are used is large, the spike housing and the spike , The number of the crimping bolts, the first hexagon nut and the second hexagon nut can be increased as much as necessary.

1: Spike 3a, 3b, 3c, 3d: Day
5: Spike body 7: Crimping bolt
9: chin 11: shaft
13: first hexagon nut 14: second hexagon nut
15: Spike housing 17: Guide
18: spherical surface 19: sliver body
21: Bolt hole for joint 23: Through hole
25: inner ring 27: outer ring
29: water pipe 30: packing
31: sprocket 33: hook bolt
35: Nut 101: Impact power tool
103: Hexagonal hollow socket LS1, LS2: Left thread
RS1, RS2, RS3: Right-hand thread

Claims (2)

A spike housing capable of receiving spikes is formed in the cylindrical cylindrical body in the radial direction. The water pipe and the spigot of the water pipe adjacent to the inside of the cylindrical body are combined. The spike is tightly attached to the spigot surface by the compression bolt, In the deviation preventing rolling wheel which is fixed so as not to be fixed,
Wherein the spike is formed with a tab in the direction of the spike, the crimping bolt is formed in the shape of a headless bolt, and an inner thread portion, which is coupled to the spike and pushes the spike, is formed at the tip of the compression bolt, The bolt has a rear end formed with an inner thread portion and a discontinuous outer thread portion, and two hexagon nuts are fastened between the front end portions of the outer thread portion so that the outer thread portion is entirely enclosed by two hexagon nuts,
Wherein the outer thread portion is formed with a thread having an opposite direction to the inner thread portion in a direction opposite to the inner thread portion, and a first hexagonal nut for driving the compression bolt is fastened to an inner portion of the outer thread portion, And a second hexagonal nut smaller than the inter-plane diagonal length is fastened.
The method according to claim 1,
Wherein the spike housing has a through hole through which the crimping bolt can be inserted with a clearance therethrough, and when the crimping bolt is inserted through the through hole from the inside of the spike housing through the through hole, And a shaft which is coupled to the through hole and is rotatable is formed between the jaw and the outer threaded portion of the compression bolt, wherein a rear half of the jaw is formed into a spherical surface And the peripheral surface of the through hole on the inner surface of the spike housing contacting the rear half of the jaw is formed to have a spherical surface corresponding to a spherical surface of the jaw, And the pressing bolt is allowed to roll around the spherical surface. Reduction.









KR1020140084937A 2014-07-08 2014-07-08 Press wheel for mechanical joint KR20160005892A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
KR1020140084937A KR20160005892A (en) 2014-07-08 2014-07-08 Press wheel for mechanical joint

Publications (1)

Publication Number Publication Date
KR20160005892A true KR20160005892A (en) 2016-01-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
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