CN112901891A

CN112901891A - Snap ring mechanism

Info

Publication number: CN112901891A
Application number: CN201911229988.8A
Authority: CN
Inventors: 袁会赞; 陶伟莉; 王媛媛; 夏国发; 王国超; 张曼曼; 陈娟; 赵明; 陈社鹏; 王建伟; 张蕾; 杨明昊
Original assignee: China National Petroleum Corp; China Petroleum Pipeline Engineering Corp
Current assignee: China National Petroleum Corp; China Petroleum Pipeline Engineering Corp
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2021-06-04

Abstract

The invention discloses a clamping ring mechanism, and belongs to the field of pipeline maintenance and plugging. The snap ring mechanism includes the nut, the bolt, snap ring and locating part, the first end of nut is provided with the spliced pole, be provided with the spread groove on the snap ring, the spliced pole is the round platform structure, and all arranged one scarf at least on spliced pole and the spread groove periphery wall, the second end of nut and the first end screw-thread fit of bolt, the second end of bolt is coaxial to be provided with the drive projection, the rotationally cartridge of drive projection is in the internal perisporium of flange, the fixed cartridge of locating part is in the periphery wall of flange, drive projection axial clamp dress is pressed from both sides between flange and locating part, be provided with the through-hole on. According to the invention, the nut is connected with the bolt through the threads, and the nut is also connected with the clamping ring, so that the clamping ring can be driven to move by driving the bolt to rotate, and the plug handle and the flange are clamped tightly. The clamping ring mechanism can effectively drive the clamping ring to move, and the arrangement efficiency of the clamping ring is improved.

Description

Snap ring mechanism

Technical Field

The invention belongs to the field of pipeline maintenance and plugging, and particularly relates to a snap ring mechanism.

Background

After the damaged pipeline finishes the plugging operation, the plugging tee joint on the opening of the damaged pipeline needs to be plugged, so that the opening of the damaged pipeline is plugged.

The main plugging mode of the plugging tee joint is that a plug handle is inserted at a flange of the plugging tee joint, and a clamping ring inserted in the inner side wall of the flange is pushed out through a push rod, so that the clamping ring tightly clamps the plug handle and the flange, and the plugging of the plugging tee joint is completed.

However, since the snap ring is an arc-shaped structural member, the ejector rod is not easy to push and push the snap ring, so that the method is inconvenient to operate, and the snap ring is not easy to control, thereby causing low arrangement efficiency of the snap ring.

Disclosure of Invention

The embodiment of the invention provides a snap ring mechanism which is convenient for pushing snap rings and improves the arrangement efficiency of the snap rings. The technical scheme is as follows:

the embodiment of the invention provides a clamping ring mechanism, which comprises a nut, a bolt, a clamping ring and a limiting piece;

the first end of nut is provided with the spliced pole, be provided with the spread groove on the snap ring, the spliced pole cartridge is in the spread groove, the spliced pole is the round platform structure, just the spliced pole with all arranged a scarf on the spread groove periphery wall at least, the scarf of spliced pole with the scarf of spread groove contacts, just the second end of nut with the first end screw-thread fit of bolt, the second end of bolt is coaxial to be provided with the drive projection, the rotatory cartridge of drive projection is in the internal perisporium of flange, the fixed cartridge of locating part is in the periphery wall of flange, drive projection axial clamp is in the flange with between the locating part, be provided with the through-hole on the locating part, the through-hole subtend the drive projection is arranged.

Optionally, an assembly column is arranged between the first end of the nut and the connecting column, the assembly column and the nut are arranged coaxially, and the outer diameter of the assembly column is smaller than that of the connecting column.

Optionally, the outer circumferential wall of the driving convex column is sleeved with a plurality of sealing rings.

Optionally, the coaxial cover of periphery wall of drive projection is equipped with the bulge loop, the bulge loop orientation one side of locating part is provided with thrust bearing, the coaxial cover of thrust bearing is established on the periphery wall of drive projection, just thrust bearing presss from both sides and is in the bulge loop with between the locating part.

Optionally, the limiting member is a screw sleeve, the screw sleeve and the bolt are coaxially arranged, the screw sleeve faces the end face of the thrust bearing and abuts against the thrust bearing, and the screw sleeve is in threaded connection with the flange.

Optionally, a driving groove is formed in an end surface, away from the bolt, of the driving convex column, an inner contour of the driving groove is a hexagonal prism, the driving groove and the driving convex column are coaxially arranged, and an inner diameter of the driving groove is smaller than an inner diameter of the screw sleeve.

Optionally, an end cover is coaxially arranged at one end of the screw sleeve, which is away from the driving convex column, and the end cover is detachably and hermetically inserted into an inner cavity of the screw sleeve.

Optionally, the end cap and the thread bush are threadedly connected.

Optionally, the screw sleeve deviates from the outer peripheral wall of one end of the driving convex column and is coaxially provided with a rotating boss.

Optionally, the periphery wall of the driving convex column is sleeved with a gasket, and one side face of the gasket is abutted to the rotating boss.

The technical scheme provided by the embodiment of the invention has the following beneficial effects:

when the snap ring mechanism provided by the embodiment of the invention is used for driving the snap ring to clamp the plug handle and the flange, firstly, the snap ring and the nut are inserted into the flange from the inner wall of the flange. Then, a stopper shank is inserted into the flange. And then, inserting bolts on the outer wall of the flange, and enabling one side of the driving convex column to abut against the flange. Then, a limiting piece is arranged on the other side of the driving convex column, so that the driving convex column is axially clamped between the flange and the limiting piece, the axial movement of the driving convex column can be limited, and the axial movement of the bolt can also be limited. Because nut and spread groove are round platform type structure, have evenly arranged the scarf on spliced pole and the spread groove periphery wall, and the scarf of spliced pole and the contact of the scarf of spread groove to the structural strength of spliced pole with the nut has been guaranteed, and can restrict the rotation of spliced pole in the snap ring. In addition, nut and bolt screw-thread fit, when using external force drive projection to rotate through the through-hole, can drive the nut along nut axial displacement in the flange through the rotation of bolt to can make the nut drive the snap ring and move in the footpath of flange, finally just can realize stopper handle and flange chucking through the removal of snap ring. That is to say, this disclosure provides a snap ring mechanism passes through the threaded connection of nut and bolt, and the snap ring is connected again to the nut to can drive the removal of snap ring through the rotation of drive bolt, and then realize stopper handle and flange chucking. Because the spread groove of nut and snap ring is the round platform structure, and all has the scarf to make nut and snap ring can cooperate the removal, just also can effectively drive the removal of snap ring, the propelling movement snap ring of being convenient for has improved the efficiency of arranging of snap ring.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a front cross-sectional view of a snap-ring mechanism provided in accordance with an embodiment of the present invention in use;

FIG. 2 is an enlarged view of a portion of the area I in FIG. 1;

FIG. 3 is a schematic structural diagram of a nut provided by an embodiment of the invention;

FIG. 4 is a side cross-sectional view of a snap ring mechanism provided by an embodiment of the present invention.

The symbols in the drawings represent the following meanings:

1. a nut; 11. connecting columns; 12. assembling the column; 2. a bolt; 21. a driving boss; 211. a convex ring; 212. a thrust bearing; 213. a seal ring; 214. a drive slot; 3. a snap ring; 31. connecting grooves; 4. a limiting member; 41. sleeving the silk; 411. an end cap; 4111. a groove; 412. rotating the boss; 413. a gasket; 100. a flange; 200. a stopper handle; a. a through hole; A. a snap ring mechanism; l, a chamfer plane.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a front sectional view of a snap ring mechanism according to an embodiment of the present invention in use, and as shown in fig. 2, the snap ring mechanism a includes a nut 1, a bolt 2, a snap ring 3, and a limiting member 4.

The first end of nut 1 is provided with spliced pole 11, be provided with connecting groove 31 on the snap ring 3, spliced pole 11 cartridge is in connecting groove 31, spliced pole 11 is the round platform structure, and all arranged one chamfer L (see figure 3) on spliced pole 11 and the connecting groove 31 periphery wall at least, the chamfer L of spliced pole 11 and the chamfer L of connecting groove 31 contact, and the second end of nut 1 and the first end screw-thread fit of bolt 2, the second end coaxial of bolt 2 is provided with drive projection 21, drive projection 21 rotationally cartridge is in the internal perisporium of flange 100, the fixed cartridge of locating part 4 is in the periphery wall of flange 100, drive projection 21 axial clamp is between flange 100 and locating part 4, be provided with through-hole an on the locating part 4, through-hole an arranges to drive projection 21.

When the snap ring 3 is driven to clamp the plug handle 200 and the flange 100 by the snap ring mechanism a according to the embodiment of the present invention, first, the snap ring 3 and the nut 1 are inserted into the flange 100 from the inner wall of the flange 100. Then, the stopper handle 200 is inserted into the flange 100. Next, the bolts 2 are inserted into the outer wall of the flange 100, and one side of the driving boss 21 is abutted against the flange 100. Then, the limiting member 4 is disposed on the other side of the driving boss 21, so that the driving boss 21 is axially interposed between the flange 100 and the limiting member 4, thereby limiting the axial movement of the driving boss 21, that is, limiting the axial movement of the bolt 2. Because nut 1 and spread groove 31 are round platform type structure, the equipartition has put scarf L on spliced pole 11 and the spread groove 31 periphery wall, and the scarf L of spliced pole 11 and the scarf L contact of spread groove 31 to the structural strength of spliced pole 11 with nut 1 has been guaranteed, and can restrict the rotation of spliced pole 11 in snap ring 3. In addition, nut 1 and bolt 2 screw-thread fit, when using external force drive projection 21 to rotate through-hole a, can drive nut 1 along nut 1 axial displacement in flange 100 through the rotation of bolt 2 to can make nut 1 drive snap ring 3 radially remove at flange 100, just can realize stopper handle 200 and flange 100 chucking through the removal of snap ring 3 finally. That is to say, the clamping ring mechanism a provided by the present disclosure is connected by the screw thread of the nut 1 and the bolt 2, and the nut 1 is connected with the clamping ring 3, so that the clamping ring 3 can be driven to move by the rotation of the driving bolt 2, and the clamping between the plug handle 200 and the flange 100 is realized. Because the connecting groove 31 of nut 1 and snap ring 3 is the round platform structure, and all has scarf L to make nut 1 and snap ring 3 can cooperate the removal, just also can effectively drive the removal of snap ring 3, the propelling movement snap ring 3 of being convenient for has improved the efficiency of arranging of snap ring 3.

In addition, because the spliced pole 11 cartridge is in the spread groove 31 and with spread groove 31 clearance fit, spliced pole 11 is the round platform structure, and has arranged scarf L on spliced pole 11 and the spread groove 31 periphery wall, not only can make spliced pole 11 drive the motion of snap ring 3 like this, has also guaranteed the structural strength of spliced pole 11 with nut 1, has just also avoided spliced pole 11 to appear the phenomenon of buckling in the rotation process.

It is easily understood that the nut 1 and the snap ring 3 are both slidably arranged in the flange 100 in the axial direction of the nut 1, the bolt 2 is rotatably installed in the flange 100, and the stopper 4 is fixedly installed in the flange 100.

Fig. 3 is a schematic structural diagram of a nut according to an embodiment of the present invention, and as shown in fig. 3, a mounting post 12 is disposed between a first end of the nut 1 and a connecting post 11, the mounting post 12 is coaxially disposed with the nut 1, and an outer diameter of the mounting post 12 is smaller than that of the connecting post 11.

In above-mentioned embodiment, through setting up erection column 12 to erection column 12 external diameter is less than spliced pole 11, thereby increases spliced pole 11 and snap ring 3's area of contact, makes spliced pole 11 get more firm with 3 joints of snap ring when removing, and then is convenient for spliced pole 11 to drive 3 removal of snap ring in the axial.

Fig. 4 is a side cross-sectional view of a snap ring mechanism according to an embodiment of the present invention, as shown in fig. 4, a convex ring 211 is coaxially sleeved on an outer circumferential wall of the driving convex cylinder 21, a thrust bearing 212 is disposed on a side of the convex ring 211 facing the limiting member 4, the thrust bearing 212 is coaxially sleeved on the outer circumferential wall of the driving convex cylinder 21, and the thrust bearing 212 is clamped between the convex ring 211 and the limiting member 4.

In the above embodiment, the thrust bearing 212 reduces the friction force between the thrust bearing 212 and the limiting member 4 when the thrust bearing 212 rotates, so as to ensure the rotation of the driving boss 21 during clamping, thereby facilitating the rotation of the external force driving bolt 2 and greatly reducing the working strength.

Optionally, the outer circumferential wall of the driving boss 21 is sleeved with a plurality of sealing rings 213.

In the above embodiment, the seal ring 213 seals the gap between the flange 100 and the driving boss 21, thereby preventing the liquid in the pipe from leaking through the gap between the flange 100 and the snap ring mechanism a.

Illustratively, the seal 213 is an O-ring seal.

In the above embodiment, the O-ring 213 facilitates and facilitates the assembly and disassembly of the O-ring 213, thereby improving the efficiency of the arrangement of the O-ring 213.

It should be noted that the provision of a plurality of seal rings 213 can prevent the remaining seal rings 213 from functioning to seal the gap between the flange 100 and the driving boss 21 when one of the seal rings 213 fails.

Illustratively, in this embodiment, the sealing ring 213 is disposed on the male ring 211.

With continued reference to fig. 4, the limiting member 4 is a screw sleeve 41, the screw sleeve 41 is coaxially arranged with the bolt 2, an end surface of the screw sleeve 41 facing the thrust bearing 212 abuts against the thrust bearing 212, and the screw sleeve 41 is in threaded connection with the flange 100.

In the above embodiment, the position of the screw sleeve 41 can be adjusted by screwing the screw sleeve 41 to the flange 100, so that the screw sleeve 41 can be matched with the flange 100 to clamp the driving boss 21, and the driving boss 21 can be restricted from moving axially.

Optionally, an outer circumferential wall of an end of the screw sleeve 41 facing away from the driving boss 21 is coaxially provided with a rotating boss 412.

In the above embodiment, the rotating boss 412 is rotated by an external force to drive the screw sleeve 41 to rotate, so as to clamp the driving boss 21.

Illustratively, the rotation boss 412 protrudes from the flange 100 (see fig. 2), so that a wrench is used to drive the rotation boss 412 to rotate, thereby controlling the clamping of the driving boss 21 by the screw sleeve 41.

Optionally, a gasket 413 is sleeved on the outer circumferential wall of the driving boss 21, and a side surface of the gasket 413 abuts against the rotating boss 412.

In the above embodiment, the washer 413 functions to reduce friction between the rotation boss 412 and the flange 100, and prevent the rotation boss 412 from wearing the flange 100 during rotation.

Optionally, the end face of the driving boss 21 facing away from the bolt 2 is provided with a driving slot 214, the inner contour of the driving slot 214 is a hexagonal prism, and the driving slot 214 is arranged coaxially with the driving boss 21, and the inner diameter of the driving slot 214 is smaller than the inner diameter of the screw sleeve 41.

In the above embodiment, the driving groove 214 is formed on the driving boss 21, so that a hexagonal wrench can be used to drive the driving boss 21 to rotate through the screw sleeve 41, thereby driving the movement of the snap ring 3.

In this embodiment, an end cap 411 is coaxially disposed at an end of the screw sleeve 41 away from the driving boss 21, and the end cap 411 is detachably and sealingly inserted into an inner cavity of the screw sleeve 41.

In the above embodiment, the end cap 411 functions to seal the thread bushing 41, and prevent impurities from sticking to the outer circumferential wall of the driving lug 21 through the thread bushing 41 to affect the rotation of the driving lug 21.

Optionally, end cap 411 and threaded sleeve 41 are threaded.

In the above embodiment, the end cap 411 and the screw sleeve 41 are screwed to facilitate the removal of the end cap 411, so as to facilitate the use of a hex wrench to drive the driving stud 21 to rotate through the screw sleeve 41.

Illustratively, the end cap 411 is coaxially provided with a groove 4111, and the inner contour of the groove 4111 is a hexagonal prism, so as to facilitate the matching of the end cap 411 with a hexagon wrench, and to facilitate the threaded connection between the end cap 411 and the screw sleeve 41 by driving the end cap 411.

The operation of the snap ring mechanism a is briefly described below in connection with fig. 2:

first, the snap ring 3 and the nut 1 are inserted into the flange 100 from the inner wall of the flange 100 (the snap ring 3 is disposed in the receiving groove of the inner wall of the flange 100). Then, the stopper handle 200 is inserted into the flange 100. Next, the bolt 2 is inserted into the outer wall of the flange 100, and the bolt 2 is inserted into the nut 1 at the time when the flange 100 is pressed against the driving boss 21. Then, the screw bushing 41 is disposed on the other side of the driving boss 21, and the screw bushing 41 is fixed to the flange 100 by rotating the rotation boss 412, so that the driving boss 21 is interposed between the flange 100 and the screw bushing 41. Then, a hexagonal wrench is inserted into the driving groove 214 to drive the driving boss 21 to rotate, the driving boss 21 drives the bolt 2 to rotate, so that the nut 1 is driven to rotate, the nut 1 and the clamping ring 3 move towards the center of the flange 100 together, and the clamping ring 3 can clamp the flange 100 and the plug handle 200 tightly. Finally, the end cap 411 is covered.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The snap ring mechanism is characterized in that the snap ring mechanism (A) comprises a nut (1), a bolt (2), a snap ring (3) and a limiting piece (4);

the first end of nut (1) is provided with spliced pole (11), be provided with spread groove (31) on snap ring (3), spliced pole (11) cartridge is in spread groove (31), spliced pole (11) is the round platform structure, just spliced pole (11) with all arranged one scarf (L) at least on the spread groove (31) periphery wall, scarf (L) of spliced pole (11) with the scarf (L) of spread groove (31) contact, just the second end of nut (1) with the first end screw-thread fit of bolt (2), the second end of bolt (2) is coaxial to be provided with drive projection (21), drive projection (21) rotationally cartridge is in the internal perisporium of flange (100), the fixed cartridge of locating part (4) is in the periphery wall of flange (100), drive projection (21) axial clamp is in flange (100) with between the locating part (4), the limiting piece (4) is provided with a through hole (a), and the through hole (a) is opposite to the driving convex column (21).

2. A snap ring mechanism according to claim 1, wherein a fitting post (12) is provided between the first end of the nut (1) and the connecting post (11), the fitting post (12) being arranged coaxially with the nut (1), the fitting post (12) having an outer diameter smaller than the connecting post (11).

3. A clasp mechanism according to claim 1, wherein a plurality of sealing rings (213) are sleeved on the outer circumferential wall of the drive stud (21).

4. The clasp mechanism according to claim 1, wherein a protruding ring (211) is coaxially sleeved on the outer circumferential wall of the driving convex cylinder (21), a thrust bearing (212) is disposed on one side of the protruding ring (211) facing the limiting member (4), the thrust bearing (212) is coaxially sleeved on the outer circumferential wall of the driving convex cylinder (21), and the thrust bearing (212) is clamped between the protruding ring (211) and the limiting member (4).

5. A ring mechanism according to claim 4, characterized in that the retainer (4) is a threaded sleeve (41), the threaded sleeve (41) is arranged coaxially with the bolt (2), and an end face of the threaded sleeve (41) facing the thrust bearing (212) abuts against the thrust bearing (212), the threaded sleeve (41) and the flange (100) being in threaded connection.

6. A ring mechanism according to claim 5, characterized in that the end face of the drive stud (21) facing away from the bolt (2) is provided with a drive groove (214), the inner contour of the drive groove (214) being hexagonal prism, and the drive groove (214) being arranged coaxially with the drive stud (21), the inner diameter of the drive groove (214) being smaller than the inner diameter of the wire sleeve (41).

7. A clip mechanism as claimed in claim 5, wherein an end of the wire sleeve (41) facing away from the drive stud (21) is coaxially provided with an end cap (411), the end cap (411) being removably sealingly insertable into an inner cavity of the wire sleeve (41).

8. A snap ring mechanism as claimed in claim 7, wherein said end cap (411) and said threaded sleeve (41) are threadedly connected.

9. A clip mechanism according to claim 5, wherein an outer peripheral wall of an end of the wire sleeve (41) facing away from the driving boss (21) is coaxially provided with a rotation boss (412).

10. A ring mechanism according to claim 9, wherein a spacer (413) is provided around the outer circumferential wall of the driving boss (21), and a side surface of the spacer (413) abuts against the rotation boss (412).