CN1267804A

CN1267804A - Joint structure of pipe body

Info

Publication number: CN1267804A
Application number: CN99111148A
Authority: CN
Inventors: 服部正; 服部孝正
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-03-23
Filing date: 1999-07-27
Publication date: 2000-09-27
Also published as: AU3325100A; JP3032200B1; KR20000062114A; JP2000274565A; TW420269U; WO2000057093A1

Abstract

To provide coupler structure of shells capable of certainly connecting both of the shells to each other and certainly preventing leakage of fluid from a connecting part. A coupler main body 2 is constituted by connecting a plural number of circular arc members 17 to each other and forming them in a ring, connecting holes are respectively drilled in the shell axial direction on both end parts in the circumferential direction of the circular arc members 17, the end parts in the circumferential direction of the circular arc members 17 are overlapped on each other, connecting pins 18 are fitted in both of the overlapped connecting holes, and a plural number of the circular arc members 17 are connected to each other by the connecting pins 18 and externally installed on both of shells 1, 1.

Description

The joint structure of body

The present invention relates to be sleeved on the joint structure that the outer coupling device of body connects into the body of annular with the arc-shaped part of halving or the trisection polylith is cut apart.

The joint structure of this body that the past is known as shown in figure 18, it has section on the end periphery face 51 of a pair of body 50,50 that will connect be the annular ditch 52 of rectangle, Sealing 54 by annular can load and unload and be sleeved on joint P freely and go up the portion of closing and cover two bodys, 50, the 50 open ends 59 joint P of butt joint mutually, tubular axis to two end part on form respectively its front end embed annular ditch 52 and with the flat bottoms of annular ditch 52 along the contacted annular portions 58 of whole circumference, to form the joint body 53 of annular.

As shown in figure 19, this joint body 53 is a kind of by two two arc-shaped parts cutting apart, 55,55 usefulness screws 56 and the structure that nut 57 is formed by connecting, and is interconnected to form annular when being sleeved on the body.Specifically, on the two end part of the circumferencial direction of arc-shaped part 55, form lip part, on this lip part, be provided with and the through hole of tubular axis to vertical inserted screw 56.So, after two lip parts engage, screw 56 is inserted in the two through hole that overlaps mutually, nut 57 is tightened on this screw 56 and after the grip flange portion, two arc-

shaped parts

55,55 just have been connected to annular.

Yet, owing to use screw 56 in this structure as the connection means, so through-hole diameter is bigger than screw 56 diameters.Promptly, because the diameter between through hole and the screw 56 is poor, even screw 56 is inserted in the through holes, like this, when tightening, the danger of escape of liquid is just arranged, also can cause water hammer sometimes and the pipe internal pressure is sharply risen cause the body 50 that is connected to throw off.Particularly, when setting pipeline between wall, because the staff is difficult to see the situation of depth one side of pipe arrangement, annular portions 58 takes place easily can not embed situation in the annular ditch 32 in the depth side, such connecting state often just takes place.

In addition, though also considered along tubular axis to patchhole is set, make this patchhole of screw 56 break-through and at tubular axis to the structure that clamps, but in this case, because both diameters are poor, along with the interior voltage rise height of fluid, coupling head body 53 radially outwards expand and are offset, and also may become the main cause of escape of liquid.

Under any circumstance, the structure of using screw 56 to connect a plurality of arc-shaped parts 55 all can cause escape of liquid because of the diameter difference between screw 56 and the patchhole.

Therefore, make the present invention in view of the problems referred to above of the prior art, its purpose provides a kind of two bodys that can connect reliably, and prevents from the joint structure of the body of joint leak fluid.

The technological means that the present invention solves above-mentioned task is a kind of joint structure of body, and it is provided with the sealed member 3 of joint body 2 and annular; This joint body 2 can be connected a pair of

body

1,1 that annular ditch 5 is arranged on the end outer circumferential face 4, be sleeved on two bodys, 1,1 upper edge whole circumference and be covered with the open end 1a of two

bodys

1,1, the joint P that 1a docks mutually, and be provided with a pair of bottom 5a and join and merge to embed annular portions 12 in the annular ditch 5 along whole circumference front end and annular ditch 5; This ring sealing part 3 is installed between the end external

peripheral surface

4,4 of inner circumferential surface 14 between two

annular portions

12,12 of this joint body 2 and two

bodys

1,1, and seals up described joint P; The characteristics of this structure are, described joint body 2 is a plurality of arc-shaped parts 17 to be connected to annular constitute, at the circumferencial direction two end part of this arc-shaped part 17 respectively along each tubular axis to wearing connect apertures 21, the circumferencial direction end of arc-shaped part 17 is overlapped, in two connect

apertures

21,21 that overlap, embed connecting pin 18, a plurality of arc-shaped parts 17 are linked up and are sleeved on two

bodys

1,1 with this connection pin 18.

Though the joint structure of this body is a plurality of arc-shaped parts 17 are connected to ring joint body 2 and to be sleeved on two

bodys

1,1, but owing to be the structure that connection pin 18 is embedded in the connect apertures 21, therefore, by means of each annular protrusion parts 12 is correctly embedded two

connect apertures

21,21 are overlapped fully, can embed connecting pin 18 in two connect

apertures

21,21, can

annular projection

12,12 have been embedded in two

annular ditch

5,5 exactly by means of the embedding of connecting pin 18 so can confirm the staff.

So, after the suit, seal up joint P with lip ring 3, joint body 2 covers its periphery, the front end edge whole circumference of annular protrusion parts 12 engages with the bottom 5a of annular ditch 5, thus can prevent leak fluid from joint P, also since connecting pin 18 along tubular axis to embedding, even press when rising in the body 1, also can keep the connection of arc-shaped part 17 with connecting pin 18.

On the one hand, in operation etc., on the end of body 1 outer circumferential face 4, tend to produce scar, wherein along tubular axis to scar be main cause from joint P leak fluid, in this case, preferably, as the present invention two as described in, in two annular portions 12, form the expression lobes part 16 of annular on the inner peripheral surface 14 between 12, that is, the outer circumferential face 15 of lip ring 3 is pressed to inner peripheral surface one side, lip ring 3 is bonded on the body 1 end outer circumferential face 4 more firmly by this extruding force with expression lobes part 16, lip ring 3 distortion are clamp-oned in the scar, so can prevent leak fluid from scar.Thereby, connecting two

bodys

1,1 o'clock, do not need with sand paper or file etc. end outer circumferential face 4 to be ground the operation of eliminating scar as before.

As the present invention three as described in, form curved surface by making along the front end of the annular portions 12 that engage in wholecircle week with the bottom 5a of annular ditch 5, even two bodys that connect 1,1 tilt, the front end of annular portions 12 also can follow inclination body 1 annular ditch 5 and keep its jointing state, this compares with smooth front end, even also can prevent leak fluid reliably because earthquake causes the body vibration, improve the ability of anti-vibration.

Below accompanying drawing and part symbol thereof are done simple declaration.

Fig. 1 is from the side view of tubular axis to the body coupled condition of the joint structure of seeing one embodiment of the invention body.

Fig. 2 is its outward appearance plan view.

Fig. 3 is an A-A line sectional drawing among Fig. 1.

Fig. 4 is a B-B line sectional drawing among Fig. 1.

Fig. 5 is a major component enlarged view among Fig. 3.

Fig. 6 represents the joint body major component of the joint structure of this body:

(A) be side view;

(B) be plan view.

Fig. 7 represents employed lip ring in the joint of this body:

(A) be whole sectional view;

(B) be the Q portion enlarged view of (A).

Fig. 8 is the sectional view of expression body connecting moves.

Fig. 9 is the sectional view of expression body connecting moves.

Figure 10 is the sectional view of expression body connecting moves.

Figure 11 is the sectional view of the joint structure of another embodiment's body of expression.

Figure 12 is the major component sectional view of employed ring sealing part among this embodiment.

Figure 13 is the sectional view of the joint structure of the other embodiment's body of expression.

Figure 14 is the major component sectional view of employed ring sealing part in other embodiment's the joint structure of body.

Figure 15 is the major component sectional view of employed ring sealing part in other embodiment's the joint structure of body.

Figure 16 is from the side view of tubular axis to the body coupled condition of the joint structure of being seen other embodiment's body.

Figure 17 is along the sectional drawing of D-D line among Fig. 1.

Figure 18 is the major component sectional view of the joint structure of existing body.

Figure 19 is from the joint body side view of tubular axis to the joint structure of being seen this body.

In above-mentioned accompanying drawing, 1-body, 1a-open end, 2-joint body, 3-ring sealing part, 4-end outer circumferential face, 5-annular ditch, 5a-bottom, 12-annular portions, 14-inner peripheral surface, 15-outer circumferential face, 16-expression lobes part, 17-arc-shaped part, 18-connecting pin, 31-attachment hole.

Embodiment

Below, referring to figs. 1 through Figure 10 one embodiment of the invention are described, the joint structure of this body is provided with joint body 2 and ring sealing part 3, wherein said joint body 2 is sleeved on the two

pipe bases

1,1 freely to connect body under the mated condition between the open end 1a of a pair of

body

1,1, can load and unload; Described ring sealing part 3 is installed between this joint body 2 and the body 1 and seals up the mutual involutory joint P of the open end 1a that makes body 1.Here mainly be its coupled condition of explanation.

At first, the body 1 that is connected is described, this body 1 is thicker steel pipe or pitch tube, as shown in Figure 8, forms annular ditch 5 in its end outer circumferential face 4 upper edge whole circumference, and this annular ditch 5 forms section shown in Figure 5 and becomes the V font substantially, and its bottom 5a becomes curvecd surface type.

So the outside whole circumference that covers joint P is also sealed, the ring sealing part 3 of half rubber system is sleeved on the end outer

circumferential face

4,4 of 5,5 of two annular ditch, and 6 of inner circumferential surface are bonded on the end outer circumferential face 4 of body 1.In the inner peripheral surface 6 of ring sealing part 3 centre substantially, be provided with the stop wall 7 that can contact along the whole circumference of the open end 1a of each body 1 is outstanding, the

bi-side

8,8 of this stop wall 7 join with each

open end

1a, 1a respectively.

Such lip ring 3, state before it is installed, as shown in Figure 7, in the bi-side 8 of inner peripheral surface 6 with stop wall 7, form each annular wall 10 and the annular recess 11 adjacent on 8 with this annular wall 10, in more detail, the annular wall 10 of inner peripheral surface 6 is that the center forms on two positions respectively symmetrically in both sides with stop wall 7, consider and prevent from end face outer circumferential face 4 leak fluid and the installation capability on body 1, make the section cardinal principle triangularity of front end to tubular axis (stop wall 7 one sides) inclination to the inside, so, inboard in each annular wall 10, outflow portion as annular wall 10 is adjacent with above-mentioned recess 11, and the front end that makes each annular wall 10 when mounted is pressed in the inboard recess 11, recess 11 sections also form triangle substantially, and, the annular wall 10 of same shape and the bi-side 8 of recess 11 in stop wall 7, also forming on the position separately respectively on 8, this annular wall 10, consider to prevent open end 1a escape of liquid, all sides of its front end (central shaft side) are tilted and recess 11 close its interior all sides formation inwardly.

Like this, when lip ring 3 is installed, as shown in Figure 5, the annular wall 10 of inner peripheral surface 6 engages with the end outer circumferential face 4 of body 1, the annular wall 10 of the side 8 of stop wall 7 is bonded on the open end 1a of body 1, and be pressed into respectively in the adjacent recess 11, and the annular wall 10 and the recess 11 of stop wall 7 also have the effect that prevents body 1 open end 1a corrosion.

When above-mentioned joint body 2 being sleeved on the outer circumferential side of such lip ring 3, just this joint body 2 is mounted to the state that envelopes lip ring 3 along whole circumference.Joint body 2 tubular axis to two end part one side be provided with the annular portions 12 that can embed above-mentioned each annular ditch 5, the front end of these annular portions 12 joins with the bottom 5a whole circumference of annular ditch 5 and forms the curved surface that engages with the bottom 5a curved surface of annular ditch 5.And, between two

annular portions

12,12, form towards the recessed annular recess 13 of outer circumferential sides, above-mentioned lip ring 3 is between the end outer

circumferential face

4,4 of this annular recess 13 and two

bodys

1,1, on the outer circumferential face 15 of the inner peripheral surface 14 of annular recess 13 attached to annular seal 3.So, it is semicircular expression lobes part 16 that a pair of small-sized section is set on annular recess 13 inner peripheral surfaces 14, each expression lobes part 16 is squeezed in the outer circumferential face 15 of lip ring 3 on body 1 side, and each expression lobes part 16 is arranged on the position corresponding with the annular wall 10 of the inner peripheral surface 6 of lip ring 3.

Illustrate in greater detail above-mentioned joint body 2 now.This joint body 2 is as Fig. 1, Fig. 2 and shown in Figure 9, is to constitute by three arc-shaped parts 17 of trisection (cutting apart for 120 °) and as three connecting pins 18 of the link tool that links circular arc parts 17.

Above-mentioned arc-shaped part 17, its integral body is about identical shape, with the side face side same radius is arranged, as shown in Figure 6, one end of its circumferencial direction is width direction (tubular axis to) the side-prominent cooperation protuberance 19 of central part forward end, then match with central authorities in the other end of opposite side, at the side-prominent cooperating recesses 20 of the two ends of width direction forward end for this cooperation protuberance 19.Cooperate to be equipped with on protuberance 19 and the recess 20 at tubular axis, the cooperation protuberance 19 of an arc-shaped part 17 is matched with the cooperating recesses 20 of another arc-shaped part 17 and the circumferential end of two arc-

shaped parts

17,17 is overlapped to the attachment hole 21 that can embed connecting pin 18.Like this, connecting pin 18 along tubular axis in two

attachment holes

21,21 that embedding overlaps, just can link up three arc-

shaped parts

17,17,17 and the joint body 2 of looping mutually at three places, connect by annular, above-mentioned annular portions 12 also form annular respectively with expression lobes part 16 grades, among Fig. 1 22, as shown in Figure 10, for when arc-shaped part 17 is connected into annular, inserting the patchhole of connecting pin 24.

In addition, arc-shaped part 17 after forming by moulding, wears attachment hole 21 or patchhole 22 and forms.

There are two shapes identical in three connecting pins 18, as shown in Figure 4, they tubular axis to the two end portions flue, to stop from connect apertures 21, to deviate from, in Fig. 1, be structure with B-B line section along C-C line section, all the other place's connecting pins 18, then as Fig. 3 and shown in Figure 5, it is tubaeform that one end and other connecting pin 18 are all mutually, and grooving is arranged on the part of the other end, but the anti-avulsion ring 23 of harmomegathus is installed thereon, prevent that by this anti-avulsion ring 23 it from coming off from attachment hole 21, this connecting pin 18 that anti-avulsion ring 23 is housed as shown in Figure 10, embeds when suit.

Below, the binding operation of a pair of

body

1,1 is described.

At first, on the two end part of the circumferencial direction of an arc-shaped part 17 of no patchhole 22, match with other the end convex-concave of no patchhole 22 1 sides of arc-shaped part 17 respectively, insert connecting pin 18 respectively, thereby connect to three arc-

shaped parts

17,17,17 a string, at this moment, after a front side end that embeds is embedded, form in mode such as rivet tightly again tubaeform, in case it is deviate from from attachment hole 21.Like this, owing to there are two place's connecting pins 18 need carry out operations such as riveting, so preferably not operation but locate to carry out at the preprocessing workshop etc. at the scene, thus, the joint body 2 that then can use a place also need not connect at the construction field (site) carries out following body and connects operation, and, connecting pin 18 along tubular axis to embedding, so can this connecting pin 18 for spool arc-shaped part 17 being rotated mutually.

So, as shown in Figure 8, lip ring 3 is installed on a side the body 1 from opening side, insert the opposing party's body 1 that lip ring 3 opposite sides are connected again, make two

bodys

1,1 be combined cover and install the joint body 2 that shape is sold by above-mentioned company.

For example, as shown in Figure 9, this suit operation is that the middle arc-shaped part 17 and the below of body 1 are joined, other two arc-

shaped parts

17,17 are turned to the inside from the body both sides, cooperating recesses 20 convex-concaves of cooperation protuberance 19 and the opposing party's arc-shaped part 17 of one side's arc-shaped part 17 are matched, two

attachment holes

21,21 are overlapped.As shown in figure 10, carrying out this making in the operation that attachment hole 21 overlaps, used the joint body fastening means 25 that to clamp two arc-

shaped parts

17,17 that connected and two

attachment holes

21,21 are overlapped.

This joint body fastening means 25 has a pair of holding sheet 26 that can be opened into the V font, 16, on this holding sheet 26, be respectively equipped with the patchhole 27 that can insert above-mentioned fitting pin 24, so, fitting pin 24 is inserted holding sheet 26 and arc-shaped part 17 both sides' patchhole 22, in 27 and each holding sheet 26 and arc-shaped part 17 are coupled together, rotate the amount of being screwed into of clamping section 28 increase screws 30, with this, make two holding sheets 26,26 is close mutually, by two holding sheets 26,26 make two arc-

shaped parts

17,17 mutually near the one-tenth closed state, thereby makes two

attachment holes

21,21 overlap fully.Like this, for a plurality of arc-shaped parts 17 being connected to annular by means of the embedding of connecting pin 18, use this joint body fastening means 25 can improve its operation, and, because its formation is that annular portions 12 are embedded in two

annular ditch

5,5 fully, its front end engages with the whole circumference of bottom 5a, two

attachment holes

21,21 overlap connecting pin 18 are inserted, owing to have such structure, so even the circularity of body 1 is bad, also having when suit can be by the advantage of annular portions 12 automatic straightenings of joint body 2.

In addition, because anti-rotation untie-sell 31 is to insert abreast in two holding sheets 26,26 with screw 30 substantially, at holding sheet 26 is under the situation of center rotation with screw 30, the phase migration mutual with holding sheet 26 can not take place yet, connect the operation easily except making, owing between two holding sheets 26,26, be provided with spring 32, make two holding sheets 26,26 towards the direction biasing of leaving mutually, so can more stably operate clamping section 28 by spring 32.

Then, under the state that two

attachment holes

21,21 overlap fully, insert last connecting pin 18, after the embedding, as shown in Figure 5, load onto anti-avulsion ring 23 at its front end.

Embed connecting pin 18 like this and carry out the structure of suit, under annular portions 12 did not partly embed situation in the annular ditch 5, the staff can confirm this state, so can prevent because of the bad escape of liquid that causes of two bodys, 1,1 connection.

And then, because annular wall 10 also becomes the state that enters in the recess 11 under coupled condition, so can obtain reliable sealing characteristics, particularly, because stop wall 7 and two open end 1a, the 1a of lip ring 3 join, so the sealability of joint P is further improved, can also prevent the corrosion of open end 1a simultaneously.

Again owing to the expression lobes part 16 of joint body 2 is squeezed the outer circumferential face 15 of lip ring 3 on body 1 side, even have on the end outer circumferential face 4 of body 1 along tubular axis to scar, annular wall 10 elasticity of inner peripheral surface 6 are pressed in the scar under the extruding force effect of expression lobes part 16, so can prevent reliably from the scar leak fluid, particularly expression lobes part 16 is arranged on the outer circumferential side of it corresponding with annular wall 10, the extruding force of expression lobes part 16 is more effectively acted on the ring dress wall 10, in the present embodiment, though be that convex portion 16 is located on the side of joint body 2, but also can partly be arranged on expression lobes on the outer peripheral surface 15 of lip ring 3 conversely.

Like this, after the connection operation of having finished two

bodys

1,1, because the front end in the annular portions 12 of coupled condition lower contact body 2 is a curved surface, even so since earthquake etc. make two

bodys

1,1 with joint body 2 be the fulcrum inclination or with tubular axis under situation about vibrating on the Vertical direction, the front end of annular portions 12 also can tilt thereupon, and engage along the whole circumference of full annular groove 5 bottom 5a, thereby can improve the so-called pliability of two

bodys

1,1 of joint P, compare for the plane person with front end, can improve the performance of aseismatic etc. more.

Joint structure of the present invention is not limited to body 1 and so on, except straight tube, can also adopt elbow' among Fig. 8 or the T shape pipe among Figure 11 to connect, also can connect in addition, and the inside among Figure 11 applies all bodys 1 of processing as the thin-wall stainless steel among Figure 13.And then, on the thin-walled body 1 in Figure 13, also can be without cutting by means of scalable diameter diametrically and form annular ditch 5, in the connection of the body 1 that the inside coating is as shown in Figure 11 handled, in order to prevent that open end 1a is corroded, usually the method that the most corrosion protection cores made from synthetic resin cover opening is installed, also can be as Figure 11 and shown in Figure 12, do not use the corrosion protection core, but with the front end edge tubular axis of the stop wall 7 of ring packing material 3 to extending to both sides, this extension part 29 is bonded on the inner peripheral surface of body 1.

Like this, lip ring 3, also can do suitable variation in design according to its purpose, annular wall 10 also can change with the shape and the number thereof of recess 11, as shown in Figure 14, on stop wall 7, also can not establish annular wall 10, also can stop wall 7 itself not establish, and also can with tubular axis to width make binary structure.

As mentioned above, when being used to connect the body 1 of the inside coating processing, can also can make the overhang of stop wall 7 identical with the wall thickness of body 1 substantially as shown in figure 15, and, only make its front end thickening flue and save above-mentioned extension part 29.

In addition, the number of arc-shaped part 17 and shape (for example, front end shape of annular portions 12 etc.) also can be done the change that suits in design.

For example, as shown in Figure 16 and 17, joint body 2 can be made of 6 arc-shaped parts 17 of 6 five equilibriums.And, as the structure that connecting pin 18 is not extracted from attachment hole 21, it is tubaeform except an end is become, or the other end is installed beyond the anti-avulsion ring 23, can also adopt various structures, owing to the radial force effect is arranged on the connecting pin 21, can be by utilizing bonding as shown in Figure 17 anti-avulsion.Also having, if 1 of body increases wall thickness in the end, the bottom 5a of annular ditch 5 is adjusted to the thickness that equates substantially with the outer circumferential face of the other parts of body 1, also is effective from the viewpoint of guaranteeing intensity.

As mentioned above, because the joint structure of body of the present invention is annular portions if not exclusively embed the structure that just can not insert connecting pin in two annular ditch, can take place as before so need not worry, situation about just two bodys being coupled together under annular portions do not embed state in the annular ditch can be received the effect that connects two bodys reliably and prevent leak fluid reliably.

Claims

1. the joint structure of a body, it is provided with the sealed member (3) of joint body (2) and ring-type; This joint body (2) can be connected a pair of body (1,1) that annular ditch (5) is arranged on the end outer circumferential face (4), be sleeved on the mutually joint P of butt joint of open end (1a, 1a) that two bodys (1,1) upper edge whole circumference is covered with two bodys (1,1), and be provided with a pair of bottom (5a) and join and merge annular portions (12) in the embedding annular ditch (5) along its front end of whole circumference and annular ditch (5); This ring sealing part (3) is installed between the end external peripheral surface (4,4) of inner circumferential surface (14) between two annular portions (12,12) of this joint body (2) and two bodys (1,1) and seals up described joint P; It is characterized in that, described joint body (2) connects to annular to a plurality of arc-shaped parts (17) and constitutes, at the circumferencial direction two end part of this arc-shaped part (17) respectively along each tubular axis to wearing attachment hole (21), the circumferencial direction end of arc-shaped part (17) is overlapped, in two attachment holes (21,21) that overlap, embed connecting pin (18), a plurality of arc-shaped parts (17) are linked up and are sleeved on two bodys (1,1) with this connecting pin (18).

2. according to the joint structure of the described body of claim 1, it is characterized in that the inner peripheral surface (14) between described two annular portions (12,12) is gone up the annular extrusion convex portion (16) that formation can be pushed the outer circumferential face (15) of ring sealing part (3).

3. according to the joint structure of claim 1 or 2 described bodys, it is characterized in that the front end of described annular portions (12) is a curved surface.