CN1317661A - Squeezing expansion method for joinint pipes and joint assembly - Google Patents
Squeezing expansion method for joinint pipes and joint assembly Download PDFInfo
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- CN1317661A CN1317661A CN 01118725 CN01118725A CN1317661A CN 1317661 A CN1317661 A CN 1317661A CN 01118725 CN01118725 CN 01118725 CN 01118725 A CN01118725 A CN 01118725A CN 1317661 A CN1317661 A CN 1317661A
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- pipe
- connection part
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Abstract
A squeezing expansion method for linking pipes with each other features that an elastomer is axially pressed to deform, which applies a radial pressure to pipe to expand the pipe and link it with a linking assembly. Said linking assembly is composed of pressing part, elastomer and expansion link part consisting of external sleeve and internal barrel.
Description
The present invention relates to method and connection part structure that pipe connects, particularly the pipe box of using at pipe end connects, by squeezing the method and structure that expands pipe and connection part are linked together, be suitable for the connection of plastic tube, rubber pipe, metal tube and plastic-metal composite pipe.
Usually pipe joint is connected Connecting format such as adopting welding, flange, screw thread with pipe, all needs the pipe that connects is processed.But the tubing that has is difficult to welding; The tubing that has (as: thin walled tube) machining screw difficulty; Even if the tubing that has energy screw thread processes but intensity can not be guaranteed.Generally, the sealed attachment structure of pipe be provided with end-face seal ring or pipe in the end of pipe axial sealing ring circumferentially is set, only depend on the distortion of materials of seal ring own to play seal action, the effect of sealing and the life-span of seal ring all can be subjected to certain influence.For example: " the quick fitting joint of pipeline " (Chinese patent application number 91208305.0) is disclosed to be to utilize gland that rubber cushion compressive strain is formed end face seal.Such linkage structure is just had any problem to the flexible pipe that is easy to be out of shape, the connection of thin walled tube.
The purpose that the crowded expanded joint of pipe of the present invention connects method and connection part provides new method and the connection part structure that pipe connects, be the axial seal and the end face seal that just can realize pipe with an elastic component, and by making pipe and connection part closely squeeze the purpose that expanded joint is connected together by making pipe produce distortion behind the elastic component compressive deformation, reaching.Be suitable between the pipes such as plastic tube, rubber pipe, thin metallic tubd, plastic-metal composite pipe or being connected of pipe and pipe fittings such as end socket, elbow, threeway, valve.Be specially adapted to that pipe is not suitable for welding, the pipe of screw thread processing connects.
Technological scheme of the present invention is to exert pressure to the pressing means of connection part, and elastomer compressive deformation under the effect of pressing means axial pressure produces radial pressure to pipe, makes the pipe compressive deformation squeeze expanded joint and is connected on the connection part.The power that applies to pressure piece can be the pressure that is produced by rotation pressing means screw thread, also can be the pressure that is produced by air pressure, hydraulic pressure or spring.Connection part includes pressing means, elastic component and expanded joint spare, and expanded joint spare is made of overcoat and inner core, and elastic component is a cylindrical body, and pressing means is in the end of elastic component, and the head of pressing means, elastic component and pipe are located in the chamber groove of expanded joint spare.The overcoat of expanded joint spare and inner core are a single piece or for the split assembly parts, during for the split assembly parts, between overcoat and the inner core for being threaded or the bolt connection.For the connection of small-bore pipe, pressing means and elastic component are enclosed within the outer wall of pipe, and the head and the elastic component of pressing means are located in the outer casing inner wall.For the connection of bigbore pipe, be provided with boss at an end of inner core, establish positioning block and pin at the outer wall of the other end of inner core, pressing means and elastic component are enclosed within on the outer wall of inner core, and the head and the elastic component of pressing means are located in the tube inner wall.Pressing means is connected with inner core or sleeve thread.Offering annular or spiral slot on the outer wall of inner core or on the inwall of overcoat.On the outer wall of overcoat, be provided with and strengthen hoop.The material of elastic component is: plastics, rubber or rubber-plastic elastomer.
Fig. 1 is that pipe of the present invention makes up an example (being suitable for being connected of small-bore pipe) with connection part, and pipe is subjected to squeeze the preceding structural representation of swelling pressure distortion.
Fig. 2 is the structural representation of structure after pipe is subjected to squeeze the swelling pressure distortion of Fig. 1.
Fig. 3 is that pipe of the present invention makes up an example (being suitable for being connected of heavy caliber pipe) with connection part, and pipe is subjected to squeeze the preceding structural representation of swelling pressure distortion.
Fig. 4 is the structural representation of structure after pipe is subjected to squeeze the swelling pressure distortion of Fig. 3.
Fig. 5 is the structural representation that the present invention is used for the embodiment 1 of small-bore pipe connection.
Fig. 6 is the structural representation that the present invention is used for the embodiment 2 of heavy caliber pipe connection.
Fig. 7 is the structural representation of the present invention as the embodiment 3 of plug connection part.
Method principle provided by the present invention as shown in Figures 1 to 4, connection part includes: pressing means 1, elastic component 2, expanded joint spare.Expanded joint spare is made of overcoat 3 and inner core 4.Elastic component 2 is a cylindrical body, the chamber groove that elastic component 2 and pipe 5 place overcoat 3 and inner core 4 to constitute, and pressing means 1 is in the end of elastic component 2.When the present invention is used for small-bore pipe and connects, can be such as depicted in figs. 1 and 2, elastic component 2 is enclosed within the outer wall of pipe 5.When being used for bigbore pipe and connecting, can be such as shown in Figure 3 and Figure 4, elastic component 2 is located in the inwall of pipe 5.Pipe 5 is assembled together with connection part, when pressing means 1 puts on elastic component 2 pressure, as Fig. 2, shown in Figure 4, elastic component 2 compressive deformations, the internal surface (shown in Figure 4) that causes pipe to be subjected to squeeze the overcoat 3 of the outer surface (shown in Figure 2) of bulging deformation and the inner core 4 of expanded joint spare or connection part squeeze bloated together, just can realize the axial seal and the end face seal of pipe with an elastic component, and realize the purpose that pipe and connection part closely link together.
Between connection part structure when the present invention utilizes spiral to exert pressure for pressing means 1 such as Fig. 5, the Figure 6 and Figure 7, pressing means 1 and expanded joint spare for being threaded.Overcoat 3 and inner core 4 can be a single piece (as Fig. 5, shown in Figure 7) or split assembly parts (Fig. 1, Fig. 3 or shown in Figure 6).When the split assembly parts, can be between overcoat 3 and the inner core 4 that screw thread or bolt connect, as Fig. 1, direct connection shown in Figure 3 or be threaded togather by pressing means 1 as shown in Figure 6.When rotation during pressing means 1, be squeezed power and make pipe 5 compressive deformations of elastic component 2.In order to make pipe 5 and connection part firm, offering annular or spiral slot 7 on the outer wall of inner core 4 or on the inwall of overcoat 3.The sectional shape of groove 7 is profile of tooth, triangle, rectangle or trapezoidal.Can make pipe 5 and being connected of connection part tightr reliable in pipe 5 embedded grooves 7 of distortion.When being connected with flexible pipe 5, when unclamping the screw thread of pressing means 1, elastic component 2 reduces the extruding force to pipe 5, and pipe 5 can be pulled out from connection part easily.Connection part of the present invention is used for the connection or the disengagement of plastic flexible pipe, rubber hose, can repeatedly use repeatedly for elastic hose.The disposable connection that also can be used for the pipe of thin metallic tubd or plastic-metal composite pipe one quasi-plastic property distortion is used.
Connection part of the present invention is provided with on the outer wall of overcoat 3 strengthens hoop.Can strengthen the bearing strength of overcoat 3, so as to guarantee pipe 5 be squeezed the power interaction energy effectively with the connection part expanded joint together.
The present invention does not need to carry out special processing to connected pipe, and connection part is realized standardization, seriation easily according to the pipe specification.The Assembly And Disassembly of pipe is very convenient.Connection part provided by the invention can be used between the nonmetallic non-rigid pipe of plastics, rubber and composite material thereof etc. or the yielding metal tube such as aluminum pipe, copper pipe or being connected of pipe and pipe fittings such as end socket, elbow, threeway, valve.Be particularly useful for being not suitable for welding, the pipe of screw thread processing, pipe fitting connect.Embodiment 1
This example is suitable for small-bore pipe and connects.The assembling of pipe and connection part as shown in Figure 5, connection part includes: pressing means 1, elastic component 2, overcoat 3 and inner core 4.Overcoat 3 and inner core 4 are a single piece.Elastic component 2 is a cylindrical body, and pressing means 1 and elastic component 2 are enclosed within the outer wall of pipe 5, and the head of pressing means and elastic component 2 are located at the chamber groove that places overcoat 3 and inner core 4 to constitute in the lump with pipe 5 in overcoat 3 inwalls, and pressing means 1 is threaded with overcoat 3.The head of pressing means 1 withstands on the end of elastic component 2.When rotation pressing means 1 puts on elastic component 2 axial pressures, elastic component 2 compressive deformations make pipe 5 be subjected to radial pressure, cause the groove 7 of the outer surface of pipe 5 extrusion-deformations and inner core 4 to press together, thereby realize the purpose that pipe and connection part closely link together.Outer surface at overcoat 3 is with reinforcement hoop 6.Connection part is the bilateral symmetry structure among Fig. 5, can realize the connection between the two tubes.If the end size can not realize the connection between the different pipes of two bores simultaneously about connection part.
This example is suitable for bigbore pipe and connects.The assembling of pipe and connection part as shown in Figure 6, connection part includes: pressing means 1, elastic component 2, overcoat 3 and inner core 4.Overcoat 3 and inner core 4 are the split assembly parts.Pressing means 1 and elastic component 2 are on the outer wall of inner core 4, and pressing means 1 and overcoat 3 and inner core 4 be respectively with being threaded, and for the location of elastic component 2, have established positioning block 8 on the outer wall of an end of inner core 4, and positioning block 8 is threaded with inner core 4 and is fixing with pin 9; Established boss 10 at the other end of inner core 4.The head of pressing means 1 and elastic component 2 and positioning block 8 and boss 10 all are located in the inwall of pipe 5.When rotation pressing means 1 put on elastic component 2 pressure, elastic component 2 compressive deformations caused pipe 5 be closely pressed together on the internal surface of the overcoat 3 of connection part by crowded bulging deformation.Can also establish groove 7 on the internal surface of overcoat 3, make connection more reliable in the embedded groove 7 during pipe 5 pressurizeds.
As shown in Figure 7, the present invention is as an example of plug connection part.The overcoat 3 of connection part and inner core 4 are an integral body, and inner core 4 centers do not have through hole, and connection part is connected with pipe 5 as plug.Among the figure represented be after pressing means 1 threaded together elastic component 2 compressive deformations with the connection state in the internal surface embedded groove 7 of pipe 5.
Claims (10)
1, a kind of pipe squeezes expanded joint and connects method, pipe and connection part are assembled together, exert pressure for the pressing means of connection part, elastomer compressive deformation under the effect of pressing means axial pressure produces radial pressure to pipe, makes the pipe compressive deformation squeeze expanded joint and is connected on the connection part.
2, method according to claim 1 is characterized in that: the power that applies to pressing means can be the pressure that is produced by rotation pressing means screw thread, also can be the pressure that is produced by air pressure, hydraulic pressure or spring.
3, the used connection part of method according to claim 1, it is characterized in that: connection part includes pressing means, elastic component and expanded joint spare, expanded joint spare is made of overcoat and inner core, elastic component is a cylindrical body, pressing means is in the end of elastic component, and the head of pressing means, elastic component and pipe are located in the chamber groove of expanded joint spare.
4, connection part according to claim 3 is characterized in that: the overcoat of expanded joint spare and inner core are a single piece or for the split assembly parts, during for the split assembly parts, between overcoat and the inner core for being threaded or the bolt connection.
5, connection part according to claim 3 is characterized in that: pressing means and elastic component are enclosed within the outer wall of pipe, and the head and the elastic component of pressing means are located in the outer casing inner wall.
6, connection part according to claim 3, it is characterized in that: the end at inner core is provided with boss, outer wall at the other end of inner core is established positioning block and pin, and pressing means and elastic component are enclosed within on the outer wall of inner core, and the head and the elastic component of pressing means are located in the tube inner wall.
7, connection part according to claim 3 is characterized in that: pressing means is connected with inner core or sleeve thread.
8, connection part according to claim 3 is characterized in that: offering annular or spiral slot on the outer wall of inner core or on the inwall of overcoat.
9, connection part according to claim 3 is characterized in that: be provided with on the outer wall of overcoat and strengthen hoop.
10, connection part according to claim 3 is characterized in that: the material of elastic component is: plastics, rubber or rubber-plastic elastomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01118725 CN1317661A (en) | 2001-06-08 | 2001-06-08 | Squeezing expansion method for joinint pipes and joint assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01118725 CN1317661A (en) | 2001-06-08 | 2001-06-08 | Squeezing expansion method for joinint pipes and joint assembly |
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| Publication Number | Publication Date |
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| CN1317661A true CN1317661A (en) | 2001-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 01118725 Pending CN1317661A (en) | 2001-06-08 | 2001-06-08 | Squeezing expansion method for joinint pipes and joint assembly |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094871A (en) * | 2009-12-14 | 2011-06-15 | 安东石油技术（集团）有限公司 | Novel connecting body of hydraulic cylinder |
| CN103170542A (en) * | 2013-04-12 | 2013-06-26 | 柳州力通车用空调有限公司 | Method for expanding pipe joint |
| CN104956569A (en) * | 2013-01-29 | 2015-09-30 | 丰田自动车株式会社 | Rotor for rotating electric motor, and rotor manufacturing method |
| CN105972347A (en) * | 2016-06-29 | 2016-09-28 | 珠海格力电器股份有限公司 | Pipeline quick connecting device and air conditioner |
| CN107228247A (en) * | 2017-08-02 | 2017-10-03 | 芜湖精达机械制造有限公司 | A kind of water pump connecting device |
-
2001
- 2001-06-08 CN CN 01118725 patent/CN1317661A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094871A (en) * | 2009-12-14 | 2011-06-15 | 安东石油技术（集团）有限公司 | Novel connecting body of hydraulic cylinder |
| CN104956569A (en) * | 2013-01-29 | 2015-09-30 | 丰田自动车株式会社 | Rotor for rotating electric motor, and rotor manufacturing method |
| US9716412B2 (en) | 2013-01-29 | 2017-07-25 | Toyota Jidosha Kabushiki Kaisha | Rotor for rotating electric motor, and rotor manufacturing method |
| CN103170542A (en) * | 2013-04-12 | 2013-06-26 | 柳州力通车用空调有限公司 | Method for expanding pipe joint |
| CN103170542B (en) * | 2013-04-12 | 2015-09-30 | 柳州力通车用空调有限公司 | The method of pipe joint expanded joint |
| CN105972347A (en) * | 2016-06-29 | 2016-09-28 | 珠海格力电器股份有限公司 | Pipeline quick connecting device and air conditioner |
| CN107228247A (en) * | 2017-08-02 | 2017-10-03 | 芜湖精达机械制造有限公司 | A kind of water pump connecting device |
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