WO2020237796A1 - 用于铸管涂衬的可充气胶胎、骨架和堵头装置 - Google Patents

用于铸管涂衬的可充气胶胎、骨架和堵头装置 Download PDF

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Publication number
WO2020237796A1
WO2020237796A1 PCT/CN2019/096072 CN2019096072W WO2020237796A1 WO 2020237796 A1 WO2020237796 A1 WO 2020237796A1 CN 2019096072 W CN2019096072 W CN 2019096072W WO 2020237796 A1 WO2020237796 A1 WO 2020237796A1
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WO
WIPO (PCT)
Prior art keywords
rubber tire
wall
expansion
section
inflatable rubber
Prior art date
Application number
PCT/CN2019/096072
Other languages
English (en)
French (fr)
Inventor
井朝纲
井长虹
Original Assignee
衡水威达橡塑有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201910454941.5A external-priority patent/CN112008853A/zh
Priority claimed from CN201910454981.XA external-priority patent/CN112008852A/zh
Application filed by 衡水威达橡塑有限公司 filed Critical 衡水威达橡塑有限公司
Publication of WO2020237796A1 publication Critical patent/WO2020237796A1/zh

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C21/00—Arrangements or combinations of wing fastening, securing, or holding devices, not covered by a single preceding main group; Locking kits
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
    • F16J15/48—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings influenced by the pressure within the member to be sealed

Definitions

  • the present application relates to an inflatable rubber tire for lining cast pipes, a skeleton suitable for the inflatable rubber tire, and a plug device including the skeleton and the inflatable rubber tire.
  • a common practice is to apply a cement coating with a thickness of 2mm or more.
  • a plug device is used to seal the two ends of the casting pipe; then the cement is injected into the casting pipe, after the high-speed rotation of the casting pipe, the centrifugal effect makes the cement slurry gradually form on the inner wall of the casting pipe with uniform thickness, certain hardness and Adhesive cement coating may precipitate water during this process; finally, disassemble and remove the plug device, and wait until the precipitated water is released.
  • the plug often sticks off the cement coated on the end surface of the casting pipe. Therefore, it is often necessary for field workers to manually repair the cement coating to ensure the integrity of the cement lining coated on the inner wall of the casting pipe. This not only prolongs the working time and low efficiency of the coating operation, but also causes the site environment to be contaminated by working media such as cement due to manual repair, which increases the difficulty of subsequent cleaning. In addition, the adhesion of the cement coating and the inner wall of the cast pipe to the cast pipe manufactured through this post-repair is also affected. In some cases, it is also possible that the end face angle that needs to be coated with the lining layer is small.
  • the present application provides an inflatable rubber tire for lining cast pipes, which is suitable for cooperating with a skeleton to form a plugging device.
  • the inflatable rubber tire includes:
  • the rubber tire body the cross section of which is roughly L-shaped and hollow inside, includes a molding wall, an expansion wall, and a contact wall connected to each other, wherein the molding wall is suitable for a cast pipe, and the expansion wall is adapted to The skeleton expands, the contact wall is adapted to contact the skeleton, and wherein the expansion wall includes a first part and a second part, and wherein the first part of the expansion wall is connected to the molding wall at one end and connected to the expansion wall at the other end the second part;
  • An inflation nozzle which is connected to the rubber tire body, is used to inflate the inflation medium into the inflatable rubber tire to inflate the inflatable rubber tire;
  • the pulling loop is located on the inner wall surface of the rubber tire body and respectively defines the first chamber and the second chamber.
  • the first chamber extends substantially in the axial direction.
  • the pulling loop is used to restrict the axial expansion of the forming wall to maintain The angle of the molding wall and prevent the plug device from falling off;
  • At least one vent hole is distributed on the pulling loop and configured to communicate with the first chamber and the second chamber.
  • the angle between the inner surfaces of the first part and the second part of the expansion wall is less than 90 degrees, and the second part of the expansion wall extends substantially along the axis;
  • the two chambers extend substantially in the radial direction.
  • the inflatable rubber tire wherein the rubber tire body further includes a fixing ring connected to the connection of the contact wall and the expansion wall, and wherein the expansion wall further includes a third part, a fourth part, and a fifth part. Part, wherein the first part, the second part, the third part, the fourth part and the fifth part are connected in sequence, and the second part and the third part are connected to the corner; and wherein the second chamber is substantially V-shaped; and wherein When not inflated, the angle between the outer surface of the third part of the expansion wall and the outer surface of the fourth part of the expansion wall is less than 90 degrees, and when inflated, as the second chamber expands, the clamp The angle gradually increases.
  • the at least one vent is further configured such that when inflated, both the first chamber and the second chamber can be fully expanded, and when deflated, both the first chamber and the second chamber can be fully retracted.
  • the rubber tire body further includes at least one anti-skid release ring, which is arranged on the molding wall to ensure that the plug device is fastened to the casting pipe;
  • the rubber tire body further includes at least one anti-skid stripping rib.
  • the included angle between the outer surface of the first part of the expansion wall and the outer surface of the second part of the expansion wall is greater than 90 degrees.
  • the outer surface of the second part of the expansion wall extends substantially in the axial direction, and wherein, in the uninflated state, the outer surface of the second part of the expansion wall is between the outer surface of the third part of the expansion wall
  • the included angle is less than 90 degrees, and as inflation expands, the angle gradually increases.
  • the present application provides a framework for lining cast pipes, which is suitable for cooperating with the above-mentioned inflatable rubber tires to form a plugging device.
  • the framework includes a receiving part that defines a receiving space.
  • the receiving portion includes: a first part and a second part connected to each other at one end, wherein in the axial direction, the first part extends beyond the second part,
  • the second component includes a first section that extends substantially in the radial direction and a second section that extends substantially in the axial direction connected to each other,
  • the first part of the skeleton is provided with a through hole that can communicate with the outside atmosphere
  • the second part of the skeleton is provided with at least one breathing hole that can communicate with the outside atmosphere.
  • the first component is an L-shaped component
  • the second component is a U-shaped component
  • the receiving part further includes a step connecting the L-shaped component and the U-shaped component
  • the L-shaped component includes an axially outer side
  • the U-shaped component includes a third section located on the axially outer side, wherein the limiting step connects the inner surface of the third section of the L-shaped component and the third area of the U-shaped component The inner surface of the segment.
  • the limiting step is configured to form an angle of 90 degrees with the inner surface of the third section of the L-shaped part of the L-shaped part;
  • the limiting step is configured such that the angle formed with the inner surface of the third section of the L-shaped part of the U-shaped part is greater than 90 degrees.
  • the first part is an L-shaped part
  • the second part is a T-shaped part
  • the receiving part further includes a protrusion located on the axially outer side of the T-shaped part, and the protrusion is radially outward and axially outward.
  • the accommodating space further includes a fixing groove defined by the protrusion, the L-shaped member, and the T-shaped member; and wherein the first section of the T-shaped member includes a substantially axially extending first section A surface and a substantially radially extending second surface, the radially outer end of which is connected to the axially outer end of the first surface, and the second section of the T-shaped member includes a substantially axially extending first surface that is axially inward The end is connected to the radially inner end of the second surface of the first section.
  • the framework further includes: a mudguard having a connecting section and a shielding section, wherein the mudguard is connected to the receiving part through the connecting section, and the shielding section is configured as a closed part or has an opening. It is used to supply the distribution pipe for injecting cement into the casting pipe.
  • the present application provides a plug device for lining cast pipes, comprising: the above-mentioned inflatable rubber tire and the above-mentioned skeleton, wherein the accommodating space of the skeleton is adapted to receive the inflatable rubber tire In the rubber tire body, the through hole of the skeleton is configured to fit the inflation nozzle of the inflatable rubber tire therethrough, the inflatable rubber tire has a first non-inflated state and a second inflated state, and wherein,
  • the inflatable rubber tire Before inflation, the inflatable rubber tire is in the first state, the rubber tire body is fitted into the first part of the skeleton, and an expansion cavity is defined between the expansion wall and the inner surface of the second part of the skeleton.
  • the telescopic path of the inflatable rubber tire specification
  • the rubber tire body When inflating, the rubber tire body expands, and the part X of the expansion wall expands and deforms in a predetermined direction in the defined expansion and contraction path until it closely fits the inner surface of the second component, and the inflatable rubber tire (2) is in the second position.
  • the inflatable rubber tire After deflation, the inflatable rubber tire returns to the first state, the rubber tire body is retracted, and the part Y of the expansion wall is separated from the inner surface of the second part of the skeleton to form an expansion cavity again.
  • an expansion cavity is defined between the second part of the expansion wall and the inner surface of the U-shaped part of the skeleton, wherein the part X of the expansion wall is the second part of the expansion wall,
  • the predetermined direction is a first direction having axial and radial components; the portion Y of the expansion wall is the second portion of the expansion wall.
  • the fixing groove is configured to be suitable for the fixing ring, and wherein the part X of the expansion wall is the first part, the second part and the third part of the expansion wall
  • the predetermined direction is a substantially axial second direction; the portion Y of the expansion wall is the fourth and fifth portions of the expansion wall.
  • the present application provides a plug device to form an expansion cavity between the inflatable rubber tire and the skeleton, so that the molding wall of the inflatable rubber tire is still stretched in a standardized path under the action of air pressure, thereby preventing The cement coating on the inner wall of the cast pipe is stuck by the plug device, and it also has many advantages such as reducing labor costs, high efficiency, and preventing the deterioration of the on-site working environment; in addition, the application can also meet the requirements of a small end angle of the coating lining and When the inflatable rubber tire is deflated and the plug device is removed, the inflatable rubber tire can be accurately reset in the rigid frame to ensure that the expansion cavity is re-formed.
  • Figure 1 shows a partial cross-sectional view of a first embodiment of a casting head device according to the present application, wherein the inflatable rubber tire is in a first state;
  • Figure 2 shows a partial cross-sectional view of the first embodiment of the casting head device according to the present application, wherein the inflatable rubber tire is in a second state;
  • Figure 3 shows a partial cross-sectional view of the first embodiment of the skeleton according to the present application
  • Figure 4 shows a partial cross-sectional view of the first embodiment of the inflatable rubber tire according to the present application
  • FIG. 5A-B show the third and fourth embodiments of the inflatable rubber tire according to the present application, in which the inflatable rubber tire has an anti-skid release ring and a sealing ring;
  • Figure 6 shows other possible examples of constructing breathing holes
  • Figure 7 shows a partial cross-sectional view of the second embodiment of the casting head device according to the present application, in which the inflatable rubber tire is in the first state;
  • Figure 8 shows a partial cross-sectional view of the casting head device according to the second embodiment of the present application, wherein the inflatable rubber tire is in a second state;
  • Figure 9 shows a partial cross-sectional view of the second embodiment of the skeleton according to the present application.
  • Figure 10 shows a partial cross-sectional view of a second embodiment of an inflatable rubber tire according to the present application.
  • 11A-B show the fifth and sixth embodiments of the inflatable rubber tire according to the present application, wherein the inflatable rubber tire has an anti-skid release ring.
  • the terms “axial” and “radial” are defined relative to the direction of the cast pipe, and are oriented on the center axis of the cast pipe.
  • the “axial” and “radial” used are descriptive (only indicating the relative direction of the components), and not restrictive in any way (ie, do not specifically refer to a specific direction).
  • the terms “axially inward” and “axially inward” refer to the direction toward the cast pipe.
  • the terms “radially inner” and “radially inward” refer to the direction toward the axis of the casting pipe.
  • the present application discloses an inflatable rubber tire 2 suitable for a skeleton of the first embodiment, a skeleton 3 suitable for an inflatable rubber tire 2, and a plug including the skeleton 3 and the inflatable rubber tire 2.
  • Device 1 An inflatable rubber tire 2 suitable for a skeleton of the first embodiment, a skeleton 3 suitable for an inflatable rubber tire 2, and a plug including the skeleton 3 and the inflatable rubber tire 2.
  • Device 1 An inflatable rubber tire 2 suitable for a skeleton of the first embodiment, a skeleton 3 suitable for an inflatable rubber tire 2, and a plug including the skeleton 3 and the inflatable rubber tire 2.
  • the inflatable rubber tire 2 of the first embodiment disclosed in the present application is shown.
  • the inflatable rubber tire 2 includes a rubber tire body 20.
  • the cross section of the rubber tire body 20 is approximately L-shaped, and it can be made of any suitable material with telescopic ability, including but not limited to rubber.
  • the inside of the rubber tire body 20 is hollow to accommodate an expansion medium, which includes but is not limited to air.
  • the inflatable rubber tire 2 includes a pulling loop 21 inside the rubber tire body 20.
  • the material of the pulling loop 21 can be rubber or any other suitable material.
  • the pulling ring belt 21 divides the inside of the rubber tire body 20 into a first chamber 22 and a second chamber 23, wherein the first chamber 22 extends substantially in the axial direction, and the second chamber 23 substantially extends in the radial direction.
  • At least one vent hole 24 is distributed on the pulling loop belt 21.
  • the at least one vent hole 24 communicates with the first chamber 22 and the second chamber 23.
  • the size and/or shape of the at least one vent hole 24 may be any suitable size and shape. In the case of two or more vent holes 24, the size and/or shape of each vent hole 24 may be the same or different.
  • the tire body 20 includes a molding wall 201, an expansion wall 202, and a contact wall 203 connected to each other.
  • the forming wall 201 is suitable for the cast pipe 5.
  • the expansion wall 202 is adapted to be able to expand within the skeleton 3.
  • the contact wall 203 is adapted to contact the frame 3.
  • the shaped wall 201 is adapted as a socket 51 for the casting pipe 5.
  • An inflation nozzle 26 may be installed on the contact wall 203 of the inflatable rubber tire 2.
  • One end of the inner side of the inflation nozzle 26 may be located on the inner surface of the first chamber 22 (as shown in FIG. 1) or the second chamber 23 (not shown).
  • the inflation medium can be filled into the first chamber 22 or the second chamber 23 of the inflatable rubber tire 2 via the inflation nozzle 26 and inflated. Since the vent hole 24 communicates the first chamber 22 and the second chamber 23, the second chamber 23 or the first chamber 22 is also expanded accordingly.
  • the pulling loop 21 is tightened to keep the angle and shape of the forming wall 201 of the inflatable rubber tire 2 substantially constant.
  • the skeleton 3 of the first embodiment disclosed in the present application is shown.
  • the skeleton 3 is generally rigid.
  • the skeleton 3 may include a receiving part 31.
  • the receiving portion 31 defines the receiving space 4.
  • the receiving part 31 may include an L-shaped part 311, a U-shaped part 312 and a limiting step 313.
  • the L-shaped part 311 and the U-shaped part 312 are configured to face each other.
  • the L-shaped member 311 includes a third section 311c of the L-shaped member located on the axially outer side.
  • the U-shaped member 312 includes a third section 312c located on the axial outer side.
  • the limiting step 313 connects the third section 311c of the L-shaped component and the third section 312c of the U-shaped component.
  • the angle formed by the limiting step 313 and the inner surface of the third section 311c of the L-shaped member of the L-shaped member 311 may be 90 degrees.
  • the angle formed by the inner surface may be greater than 90 degrees.
  • the L-shaped part extends beyond the U-shaped part.
  • the L-shaped component 311 includes a first section 311a, a second section 311b, and a third section 311c.
  • the second section 311b extends substantially parallel to the axial direction, and the second section 311b includes two opposite ends in the axial direction.
  • the first section 311a is connected to an axially inner end of the second section 311b, and extends a certain distance in the radially inward direction.
  • the angle formed by the inner surface of the first section 311a and the inner surface of the second section 311b is 90 degrees; in another embodiment, the inner surface of the first section 311a and the second section 311b The angle formed by the inner surface of 311b is less than 90 degrees.
  • the third section 311c is connected to the other end of the axially outer side of the second section 311b, and extends a certain distance in the radially inward direction and is connected to the U-shaped member 312, wherein, in the radial direction, the distance is longer than The distance the first section 311a extends.
  • the skeleton 3 includes through holes 316.
  • the through hole 316 may be arranged in the third section 311c.
  • the U-shaped part 312 may include a first section 312a, a second section 312b, and a third section 312c.
  • the second section 312b extends substantially in the axial direction, and the second section 312b includes two opposite ends in the axial direction.
  • the first section 312a is connected to an axially inner end of the second section 312b and extends a certain distance in the radially outward direction.
  • the included angle between the inner surface of the first section 312a and the inner surface of the second section 312b is less than or equal to 90 degrees.
  • the third section 312c is connected at one end thereof to the other end of the axially outer side of the second section 312b, and the third section 312c is connected to the L-shaped member 311 at the other end by a stop step 313.
  • the angle between the inner surface of the third section 312c of the U-shaped component 312 and the inner surface of the second section 312b may be greater than 90 degrees.
  • the angle between the inner surface of the third section 312c of the U-shaped component 312 and the inner surface of the third section 311c of the L-shaped component 311 may be greater than 90 degrees.
  • the inflatable rubber tire 2 When the inflatable rubber tire 2 is used in conjunction with the frame 3, the inflatable rubber tire 2 is embedded in the containing space 4 defined by the frame 3.
  • the molding wall 201 does not contact the frame 2.
  • the contact wall 203 contacts and/or closely adheres to the inner surface of the L-shaped part 311 of the frame 3.
  • the expansion wall 202 is connected to the shaped wall 201 at one end; the expansion wall 202 is connected to the contact wall 203 at the other end.
  • the inflation cavity 41 is defined by the inflatable rubber tire 2 and the inner surface of the U-shaped member 312.
  • the frame 3 further includes a through hole 316 and at least one breathing hole 317.
  • the through hole 316 is configured to be suitable for the penetration of the inflation nozzle when the inflatable rubber tire 2 and the frame 3 are used together, and at the same time, it does not affect the tight fit between the rubber tire body 20 and the frame 3.
  • One end of the at least one breathing hole 317 is arranged on the inner surface of the U-shaped component 312 to communicate with the expansion cavity 41 and the outside atmosphere, so that the air pressure in the expansion cavity 41 is always balanced with the outside atmosphere.
  • the skeleton 3 may further include a mudguard 32.
  • the mudguard 32 can be any suitable and/or configuration and/or configuration known in the art for a specific application, and it can include a connecting section (which can have a certain slope (for example, for large-size cast pipe) or It is formed as a whole (for example, for small-sized cast pipes) and a shielding section on the same plane.
  • the mudguard 32 may be connected to the receiving part 31 by a connecting section.
  • the shielding section can be fully enclosed, or it can have openings for entering and exiting the cast pipe (5) of the cement-filled cloth pipe.
  • the plug device 1 including the skeleton 3 and the inflatable rubber tire 2 disclosed in the present application is shown.
  • the characteristics of the inflatable rubber tire 2 and the characteristics of the frame 3 are as described above.
  • the method of using the plug device 1 is described in detail below.
  • the inflatable rubber tire 2 is stuffed into the accommodating space 4 defined by the L-shaped member 311 and the U-shaped member 312 of the accommodating portion 31 of the frame 3. Adjust the relative positions of the inflatable rubber tire 2 and the frame 3 so that the inflation nozzle 26 passes through the through hole 316 of the frame 3 and the outer end of the inflation nozzle 26 is exposed to the outside atmosphere, so that the contact wall 203 of the rubber tire body 20 is fitted to the frame 3
  • the inner surface of the L-shaped part 311, so that at least part of the expansion wall 202 and the inner surface of the U-shaped part 312 define an expansion cavity 41, wherein at least a part of the limiting step 313 abuts against the second part 202b of the expansion wall 202 . In this way, the remaining parts of the shaped wall 201 and the expansion wall 202 except for the at least part are exposed and visible. In this way, the inflatable rubber tire 2 is in the first state (non-inflated state).
  • the plug device 1 is externally inserted into the socket 51 of the casting pipe 5 so that the molding wall 201 is fitted to the socket 51.
  • the inflation medium is filled into the rubber tire body 20 through the inflation nozzle 26, so that the molding wall is further fastened to the socket 51 of the casting pipe 5; at the same time, the path defined by the inflation wall 202 on the inner surface of the U-shaped member 312
  • the expansion cavity 41 gradually shrinks until it disappears, and the expansion wall 202 gradually adheres to the inner surface of the U-shaped component 312.
  • the first portion 202a of the expansion wall 202 slides into the U-shaped member 312 and is attached to the inner surface of the U-shaped member 312; the second portion 202b of the expansion wall 202 is attached to the diameter of the U-shaped member 312 Inwardly facing inner surface and axially outwardly facing inner surface.
  • the plug device is fastened to the socket 51 of the casting pipe 5.
  • the inflatable rubber tire 2 reaches the second state (inflated state).
  • the mudguard 32 of the skeleton 3 has an opening, through which a distribution pipe for cement injection can be extended into the casting pipe 5.
  • the cast pipe 5 to which the plug device 1 is fastened is rotated at a high speed along its central axis through the power device.
  • the cement slurry is evenly coated on the inner wall of the casting pipe 5, and a cement lining layer 52 with a certain hardness and adhesion is gradually formed.
  • the inflatable rubber tire 2 is in the second state (inflated state).
  • the expansion medium in the inflatable rubber tire 2 is released (deflated), and the expansion wall 202 is retracted in the path defined by the inner surface of the U-shaped member 312.
  • the cavity 41 is regenerated and gradually expanded, and the expansion wall 202 is separated from the inner surface of the U-shaped part 312.
  • the first part 202a of the expansion wall 202 slides out of the U-shaped part 312 and is separated from the inner surface of the U-shaped part 312 in the axial direction; the second part 202b of the expansion wall 202 is separated from the radially inner side of the U-shaped part 312
  • the inner surface is separated from the inner surface on the axial outer side. In this way, the expansion cavity 41 is newly formed. In this way, the inflatable rubber tire 2 returns to the first state.
  • the expansion cavity 41 is connected to the outside atmosphere, so that the air pressure in the expansion cavity 41 is always balanced with the outside atmosphere, thereby avoiding the deflation process
  • working medium such as precipitated water and/or unconsolidated cement slurry
  • the plug device 1 can be easily removed from the casting pipe socket 51 without the cement lining 52 sticking off.
  • the molding wall 201 includes a first part 201a, a second part 201b, and a third part 201c that are connected in sequence.
  • the first part 201a of the shaped wall extends substantially in the axial direction.
  • the first part 201 a of the forming wall 201 is fitted to the outer surface of the casting pipe 5.
  • the inflatable rubber tire 2 is inflated, the first part 201a of the forming wall applies pressure inward in the radial direction, so that the first part 201a of the forming wall abuts and closely adheres to the outer surface of the casting pipe.
  • the second part 201b of the molding wall is shaped to fit the chamfered shape of the casting pipe port.
  • the second part 201 b of the forming wall is fitted to the chamfered surface of the casting pipe 5.
  • the inflatable rubber tire 2 is inflated, the second part 201b of the molding wall abuts and closely adheres to the chamfered surface of the casting pipe.
  • the third part 201c of the forming wall is formed to match the shape of the end surface of the casting pipe.
  • the third part 201 c of the forming wall is fitted to the end surface of the casting pipe 5.
  • the inflatable rubber tire 2 is inflated, the third part 201c of the molding wall contacts the end surface of the casting pipe 5 and applies pressure in the axially inward direction so that it abuts and closely fits the end surface of the casting pipe.
  • the expansion wall 202 includes a first portion 202a, a second portion 202b, and a third portion 202c.
  • the first part 202a of the expansion wall is connected to the shaped wall 201 at one end and to the second part 202b of the expansion wall at the other end (ie, corner A).
  • the angle between the outer surface of the first part 202a and the outer surface of the second part 202b may be 90 degrees.
  • the second portion 202b of the expansion wall extends substantially in the axial direction or substantially parallel to the inner surface of the second section 202b of the U-shaped member.
  • the second portion 202b is connected to the first portion 202a of the expansion wall at one end (ie, corner A) and to the third portion 202c of the expansion wall at the other end.
  • the angle between the outer surface of the second portion 202b of the expansion wall and the outer surface of the third portion 202c of the expansion wall is greater than 90 degrees.
  • the second portion 202b of the expansion wall expands and deforms in the first direction with axial and radial components, and continues to approach the inner surface of the second section 312b of the U-shaped member until it fits tightly.
  • the third part 202c of the expansion wall is connected to the second part 202b at one end and to the contact wall 203 at the other end.
  • the angle between the outer surface of the third portion 202c of the expansion wall and the outer surface of the contact wall 203 is greater than 90 degrees.
  • the third part 202c of the expansion wall expands and deforms in the first direction with axial and radial components, until the expansion cavity 41 disappears and the third part 202c of the expansion wall closely fits The third section 312c of the U-shaped part.
  • first direction with axial and radial components refers to the direction in which the expansion and contraction path defined by the expansion cavity 41 is axially inward and radially inward.
  • the contact wall 203 includes a first part 203a, a second part 203b, and a third part 203c.
  • the first portion 203a of the contact wall extends substantially in a direction that is fitted to the inner surface of the first section 311a of the L-shaped member.
  • the first part 203a is connected to the shaped wall 201 at one end and to the second part 203b of the contact wall at the other end.
  • the first portion 203a contacts the first section 311a of the L-shaped member.
  • the inflatable rubber tire 2 is inflated, the first portion 203a applies pressure to the first section 311a of the L-shaped member to fit tightly thereon.
  • the second portion 203b of the contact wall extends substantially in the direction that fits the inner surface of the second section 311b of the L-shaped member.
  • the second part 203b of the contact wall is connected to the first part 203a of the contact wall at one end and to the third part 203c of the contact wall at the other end.
  • the second portion 203b contacts the second section 311b of the L-shaped member.
  • the inflatable rubber tire 2 is inflated, the second portion 203b applies pressure to the second section 311b of the L-shaped member to fit tightly thereon.
  • the third portion 203 of the contact wall extends substantially in the direction that fits the inner surface of the third section 311c of the L-shaped member.
  • the third part 203c of the contact wall is connected to the second part 203b of the contact wall at one end and to the expansion wall 202 at the other end.
  • the third portion 203c contacts the third section 311c of the L-shaped member.
  • the inflatable rubber tire 2 is inflated, the third portion 203c applies pressure to the third section 311c of the L-shaped member to fit tightly thereon.
  • the vent hole 24 connects the first chamber 22 and the second chamber 23, so that when inflated, both the first chamber 22 and the second chamber 23 can be fully expanded. When deflated, the first chamber 22 And the second chamber 23 can be fully retracted.
  • the pulling loop 21 restricts the expansion of the molded wall 201 in the axial direction, which helps to make the expansion wall 202 expand or retract in the path restricted by the U-shaped member 312 as described above. To prevent the risk of sticking off the cement lining layer 52.
  • the contact wall 203 of the rubber tire body 20 that contacts the inner surface of the third section 311c of the L-shaped part of the frame 3 is always (at Both the first state and the second state closely fit the inner surface of the third section 311c of the L-shaped member of the frame 3, regardless of whether the inflatable rubber tire 2 is inflated or deflated.
  • the limit step 313 always (in both the first state and the second state) abuts against the second portion 202b of the expansion wall 202, Regardless of whether the inflatable rubber tire 2 is inflated or deflated.
  • the rubber tire body 20 of the inflatable rubber tire 2 may further include at least one anti-skid release ring 204a and optionally at least one anti-skid release rib 204b.
  • the at least one anti-skid release ring 204a is arranged on the forming wall 201, preferably on the first part 201a of the forming wall 201.
  • the at least one anti-skid release ring 204a is distributed in the radial direction with the casting pipe axis as the center. When inflated, the at least one anti-skid release ring 204a provides space to prevent the molding wall 201 from expanding and causing wrinkles to affect the rubber tire and casting. The tight fit of the tube.
  • the inflatable rubber tire may further include at least one anti-slip rib 204b.
  • the at least one anti-slip rib 204b is distributed along the axial direction, and is connected to the at least one anti-slip ring 204a at one end thereof, and is connected to the first part 201a of the molding wall at the other end.
  • the outer surface of the anti-skid strip 204b and the outer surface of the first part 201a of the molding wall may not be in the same cylindrical or conical surface, but are located at a certain distance radially outward relative to the molding wall.
  • FIG. 5A the outer surface of the anti-skid strip 204b and the outer surface of the first part 201a of the molding wall may not be in the same cylindrical or conical surface, but are located at a certain distance radially outward relative to the molding wall.
  • the outer surface of the anti-slip de-ribbing 204b may be the same as the outer surface of the first part 201a of the forming wall. In the same cylindrical or conical surface, as shown in the partial enlarged view I in FIG. 5B.
  • the anti-skid stripping ring 204a and/or the anti-skid stripping rib 204b are used to ensure that the plug device 1 is fastened to the cast pipe 5 and is not easy to fall off even when the cast pipe 5 rotates at a high speed.
  • the tire body 20 of the inflatable tire 2 may further include at least one sealing ring 205.
  • the one less sealing ring 205 can be arranged on the first part 202a of the expansion wall 202 to prevent the inflatable rubber tire 2 from inhaling the inflatable cavity 41 during the process of returning from the second state to the first state after being deflated.
  • working medium such as cement that is not coated on the inner wall of the casting pipe 5.
  • one end of the breathing hole 317 may be located on the inner surface of the U-shaped part 312 of the skeleton 3, and the other end may be located at any suitable position of the skeleton 3 that opens to the outside atmosphere, such as shown in FIG.
  • the illustrated embodiment is not limited to being located on the same side as the through hole 316 for the inflation nozzle 26.
  • FIG. 7 there is another inflatable rubber tire 2 suitable for a skeleton of the present application, a skeleton 3 suitable for an inflatable rubber tire 2, and a plug including the skeleton 3 and the inflatable rubber tire 2.
  • Device 1 is another inflatable rubber tire 2 suitable for a skeleton of the present application, a skeleton 3 suitable for an inflatable rubber tire 2, and a plug including the skeleton 3 and the inflatable rubber tire 2.
  • Device 1 is another inflatable rubber tire 2 suitable for a skeleton of the present application, a skeleton 3 suitable for an inflatable rubber tire 2, and a plug including the skeleton 3 and the inflatable rubber tire 2.
  • the inflatable rubber tire 2 includes a rubber tire body 20.
  • the cross section of the rubber tire body 20 is different from the cross section of the rubber tire body 20 disclosed in FIG. 1.
  • the inflatable rubber tire 2 includes a pulling loop 21 as described with reference to FIG. 1.
  • the pulling ring belt 21 divides the inside of the rubber tire body 20 into a first chamber 22 and a second chamber 23, wherein the first chamber 22 extends substantially in the axial direction, and the cross section of the second chamber 23 is substantially V-shaped, respectively It extends roughly in the radial and axial directions.
  • At least one vent hole 24 as described with reference to FIG. 1 is distributed on the pulling loop 21.
  • the tire body 20 includes a molding wall 201, an expansion wall 202, and a contact wall 203 connected to each other, which also have the characteristics described with reference to FIG. 1, and will not be repeated here.
  • the rubber tire 2 disclosed in the present application may further include a fixing ring 206.
  • the fixing ring 206 is connected to the junction of the contact wall 203 and the expansion wall 202.
  • the material of the fixing ring 206 may be any suitable material, and may be the same or different from the material of the contact wall 203 and/or the expansion wall 202.
  • the skeleton 3 is generally rigid.
  • the skeleton 3 may include a receiving part 31.
  • the receiving portion 31 defines the receiving space 4.
  • the receiving part 31 may include an L-shaped part 311, a T-shaped part 312, and a protrusion on the T-shaped part 312 extending in a radially outward direction.
  • the L-shaped part 311 and the T-shaped part 312 are connected to each other.
  • the L-shaped member 311 includes a third section 311c of the L-shaped member located on the axially outer side.
  • the T-shaped member 312 includes a second section 312b extending substantially in the axial direction.
  • the third section 311c of the L-shaped part and the second section 312b of the T-shaped part are connected to each other.
  • the L-shaped part extends beyond the T-shaped part.
  • the accommodating space 4 may include a fixing groove 313', which is fitted to the fixing ring 206 of the inflatable rubber tire 2.
  • the surface of the axially inner side of the fixing groove 313' is defined by the protrusion on the T-shaped member 312.
  • the L-shaped member 311 includes a first section 311a, a second section 311b, and a third section 311c.
  • the second section 311b extends substantially parallel to the axial direction, and the second section 311b includes two opposite ends in the axial direction.
  • the first section 311a is connected to an axially inner end of the second section 311b, and extends a certain distance in the radially inward direction.
  • the angle formed by the inner surface of the first section 311a and the inner surface of the second section 311b is 90 degrees; in another embodiment, the inner surface of the first section 311a and the second section 311b The angle formed by the inner surface of 311b is less than 90 degrees.
  • the third section 311c is connected to the other end of the axially outer side of the second section 311b, and extends a certain distance in the radially inward direction and is connected to the T-shaped member 312, wherein, in the radial direction, the distance is longer than The distance the first section 311a extends.
  • the skeleton 3 includes through holes 316.
  • the through hole 316 may be arranged in the third section 311c.
  • the T-shaped part 312 may include a first section 312a and a second section 312b.
  • the first section 312a includes a first surface 312a1 extending substantially in the axial direction and a second surface 312a2 connected to the first surface 312a1 extending substantially in the radial direction and located on the axial inner side.
  • the second section 312b includes a first surface 312b1 extending substantially in the axial direction and located radially outside.
  • a protrusion extending radially outward is provided on the first surface 312b1 of the second section 312b near the axial outer side. The protrusion defines an axially inner surface of the fixing groove 313'.
  • the second section 312b extends substantially in the axial direction, and the second section 312b includes two opposite ends in the axial direction.
  • the first section 312a is connected to an axially inner end of the second section 312b and extends a certain distance in the radially outward direction.
  • the angle between the second surface 312a2 of the first section 312a and the first surface 312b1 of the second section 312b is equal to or slightly larger than 90 degrees.
  • the second section 312b is connected to the L-shaped part 311 at the other end.
  • the angle between the first surface 312b1 of the second section 312b of the T-shaped component 312 and the inner surface of the third section 311c of the L-shaped component 311 may be greater than 90 degrees.
  • the inflation cavity 41 is defined by the rubber tire body 20 and the inner surface of the T-shaped member 312.
  • the frame 3 further includes a through hole 316 and at least one breathing hole 317.
  • the features of the through hole 316 and the at least one breathing hole 317 are as described above, and will not be repeated here.
  • the skeleton 3 may further include a mudguard 32.
  • the features of the mudguard 32 are as described above, and will not be repeated here.
  • FIGS. 7 and 8 a second embodiment of the plug device 1 including the skeleton 3 and the inflatable rubber tire 2 is shown. The method of using the plug device 1 is described in detail below.
  • the inflatable rubber tire 2 is stuffed into the accommodating space 4 defined by the L-shaped member 311 and the T-shaped member 312 of the accommodating portion 31 of the frame 3. Adjust the relative positions of the inflatable rubber tire 2 and the frame 3 so that the inflation nozzle 26 passes through the through hole 316 of the frame 3 and the outer end of the inflation nozzle 26 is exposed to the outside atmosphere, so that the contact wall 203 of the rubber tire body 20 is fitted to the frame 3
  • the inner surface of the L-shaped member 311, so that at least part of the expansion wall 202 and the surface 312a2, 312b1 of the T-shaped member 312 define an expansion cavity 41, wherein the fixing ring 206 of the inflatable rubber tire 2 is fastened to the fixing defined by the skeleton In slot 313'. In this way, the remaining parts of the shaped wall 201 and the expansion wall 202 other than the at least part are exposed and visible. In this way, the inflatable rubber tire 2 is in the first state (non-inflated state).
  • the plug device 1 is externally inserted into the socket 51 of the casting pipe 5 so that the molding wall 201 is fitted to the socket 51.
  • inflation medium is injected into the rubber tire body 20 through the inflation nozzle 26, so that the molding wall is further fastened to the socket 51 of the casting pipe 5; at the same time, a part of the inflation wall 202 is on the surface 312a2, 312b1 of the T-shaped member 312
  • the defined expansion and contraction path normally expands, the expansion cavity 41 gradually shrinks until it disappears, and the part of the expansion wall 202 gradually adheres to the surfaces 312a2, 312b1 of the T-shaped member 312.
  • the remaining part of the expansion wall 202 except for the part extends axially and is made to abut the first surface 312a1 of the first section 312a of the T-shaped member in the radial direction. In this way, the plug device is fastened to the socket 51 of the casting pipe 5. In this way, the inflatable rubber tire 2 reaches the second state (inflated state).
  • the inflatable rubber tire 2 is in the second state (inflated and expanded state).
  • the expansion medium in the inflatable rubber tire 2 is released (deflated), and the expansion wall 202 is retracted in the telescopic path defined by the surfaces 312a2, 312b1 of the T-shaped member 312.
  • the expansion cavity 41 is regenerated and gradually enlarged, and the expansion wall 202 is separated from the surfaces 312a2, 312b1 of the T-shaped member 312. In this way, the expansion cavity 41 is newly formed. In this way, the inflatable rubber tire 2 returns to the first state.
  • one end of the at least one breathing hole 317 is arranged on the surfaces 312a2, 312b1 of the T-shaped member 312, it communicates with the expansion cavity 41 and the outside atmosphere, so that the air pressure in the expansion cavity 41 is always balanced with the outside atmosphere.
  • the plug device 1 can be easily removed from the casting pipe socket 51 without the cement lining 52 sticking off.
  • the molding wall 201 includes a first part 201a, a second part 201b, and a third part 201c that are connected in sequence. Its features are as described with reference to the embodiment in FIG. 1 and will not be repeated here.
  • the expansion wall 202 includes a first portion 202a, a second portion 202b, a third portion 202c, a fourth portion 202d, and a fifth portion 202e connected in sequence.
  • the first part 202a is connected to the shaped wall 201 at one end and to the second part 202b of the expansion wall at the other end.
  • the angle between the outer surface of the first portion 202a and the outer surface of the second portion 202b may be slightly greater than 90 degrees.
  • the outer surface of the second portion 202b extends substantially in the axial direction.
  • the second part 202b is connected to the first part 202a of the expansion wall at one end and to the third part 202c of the expansion wall at the other end (ie, corner A).
  • corner A the angle between the outer surface of the second portion 202b of the expansion wall and the outer surface of the third portion 202c of the expansion wall is less than 90 degrees, and as the inflation expands, the angle gradually increases To more than 90 degrees.
  • the corner A of the second part 202b connected to the third part 202c can be pushed against the first surface 312a1 of the first section 312a of the T-shaped member.
  • the corner (A) slides along the first surface (312a1) of the first section of the T-shaped member and is guided to force the expansion wall (202) to deform, and at the same time, the expansion wall
  • the second portion 202b expands and deforms along the second direction of the substantially axial direction until the expansion cavity 41 completely disappears; the angle between the outer surface of the second portion 202b of the expansion wall and the outer surface of the third portion 202c of the expansion wall Gradually increase, from less than 90 degrees to greater than 90 degrees.
  • the third portion 202c of the expansion wall is connected to the second portion 202b at one end (ie, corner A) and to the fourth portion 202d of the expansion wall at the other end.
  • the angle between the outer surface of the third portion 202c of the expansion wall and the outer surface of the fourth portion 202d of the expansion wall is less than 90 degrees, and in the inflated state, it gradually increases to More than 90 degrees.
  • the corner A slides on the first surface 312a1, and the other end of the third portion 202c of the expansion wall connected to the fourth portion 202d gradually approaches the first section 312a of the T-shaped member
  • the first surface 312a1 and the second surface 312a2 are connected until they overlap, and at the same time, the third portion 202c of the expansion wall expands and deforms in the second direction along the substantially axial direction, so that the third portion 202c of the expansion wall closely fits the T-shape
  • the first surface 312a1 of the first section 312a of the component; the angle between the outer surface of the third portion 202c of the expansion wall and the outer surface of the fourth portion 202d of the expansion wall gradually increases, from less than 90 degrees to More than 90 degrees.
  • substantially axial second direction refers to the conicity defined by the first surface 312a1 of the first section of the T-shaped component, and the taper with the axis as the generatrix is not greater than 10°, and optionally not Greater than 5°, the axial direction is inward.
  • the taper may diverge from the axial direction inward or axially outward.
  • the fourth part 202d is connected to the third part 202c at one end thereof and is connected to the fifth part 202e at the other end.
  • the angle between the outer surface of the fourth portion 202d and the outer surface of the fifth portion 202e is less than 90 degrees, and in the inflated condition, it gradually increases to be equal to or greater than 90 degrees. degree.
  • the plug device 1 is installed to the casting pipe that has not yet been inflated, the fourth part 202c does not contact any part of the skeleton 3.
  • the fourth portion 202c When the inflatable rubber tire 2 is inflated, the fourth portion 202c generally expands and deforms in the first direction having axial and longitudinal components until it contacts and closely fits the second surface 312a2 of the first section of the T-shaped member.
  • the angle between the outer surface of the fourth portion 202d and the outer surface of the fifth portion 202e gradually increases, from less than 90 degrees to equal to or greater than 90 degrees.
  • the fifth part 202e is connected to the fourth part 202d at one end and to the contact wall 203 at the other end.
  • the fifth portion 202e extends substantially parallel to the direction of the first surface 312b1 of the second section of the T-shaped member.
  • a fixing ring 206 is connected at one end of the fifth part 202e connected with the contact wall 203.
  • the fifth portion 202e expands and moves radially inward, the end of the fifth portion 202e connected to the contact wall 203 abuts against the protrusion above the fixing groove 313', and the fifth portion 202e and The connected end of the fourth portion 202d expands and moves until it coincides with the junction of the second surface 312a2 of the first section of the skeleton and the first surface 312b1 of the second section, and the fifth section 202e has an axial and radial direction The first direction of the component expands and deforms, so that the expansion cavity 41 completely disappears.
  • first direction with axial and radial components refers to the direction in which the expansion and contraction path defined by the expansion cavity 41 is axially inward and radially inward.
  • the contact wall 203 includes a first part 203a, a second part 203b, and a third part 203c that are sequentially connected. Its features are as described with reference to the embodiment in FIG. 1, and will not be repeated here.
  • the fixing ring 206 of the inflatable rubber tire 2 is always (in both the first state and the second state) fastened to the fixing groove of the frame 3 313', regardless of whether the inflatable rubber tire 2 is inflated or deflated.
  • the tire body 20 of the inflatable tire 2 of the second embodiment may further include at least one anti-skid release ring 204a and optionally at least one anti-skid release rib 204b as described with reference to FIG. 1, Or at least one anti-slip rib 204b.
  • the inflatable rubber tire 2 may be disposable or reusable. This may depend on, for example, the material constituting the inflatable rubber tire 2, the manufacturing process, and the application purpose.
  • the number of inflation nozzles 26 may be one or more. Accordingly, the through holes 316 are configured to be suitable for the number and shape of the inflation nozzles 26.
  • the inflation medium filled in the inflatable rubber tire 2 can be any gas suitable for specific scenarios, including but not limited to inert gas such as air and/or nitrogen.
  • the expansion medium is not limited to gas, but also includes, for example, liquid.
  • the inflation nozzle 26 described in the present application is not limited to being used for filling gas, but can be used for filling any suitable inflation medium.
  • the rubber tire may also include other chambers (such as the third chamber, etc.) besides the first chamber 22 and the second chamber 23, which can be used to further maintain the angle of the molding wall and prevent the tire body 20 from moving. Bit.
  • other chambers such as the third chamber, etc.
  • cement-coated lining is used as an example in this application, the scope of application of this application is not limited to cement-coated lining.
  • socket end of the casting pipe is used as an example to describe the skeleton 3, the inflatable rubber tire 2 and the plug device 1 of the present application, the skeleton 3, the inflatable rubber tire 2 and the plug device 1 of the present application are also described in this application. It can be used for the socket end of the cast pipe.
  • the framework 3, the inflatable rubber tire 2 and the plug device 1 of the present application are described in the embodiment of the cast pipe, the application scope of the framework 3, the inflatable rubber tire 2 and the plug device 1 of the present application is not limited For cast pipes, it is also used for other pipes similar to cast pipes that need to be sealed.

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Abstract

本申请提供了一种用于铸管涂衬的可充气胶胎、骨架和堵头装置。可充气胶胎包括：胶胎本体、充气嘴、牵拉环带和至少一个通气孔。骨架包括L型部件、U或T型部件和挡泥板。堵头装置包括可充气胶胎和骨架。骨架和可充气胶胎配合使用于铸管涂衬时，可防止铸管端面内壁的涂层被粘掉。

Description

用于铸管涂衬的可充气胶胎、骨架和堵头装置 技术领域
本申请涉及一种用于铸管涂衬的可充气胶胎、适于可充气胶胎的骨架和包括骨架和可充气胶胎的堵头装置。
背景技术
在铸管(铸铁管)生产过程中，为了达到延长铸管的使用寿命和输送介质的清洁性，经常需要在其内壁上形成涂衬层。一种常见的做法是涂覆厚度为2mm以上的水泥涂层。通常，使用堵头装置将铸管的两端密封；然后将水泥注入铸管内，经过铸管的高速旋转，利用离心作用，使得水泥泥浆在铸管内壁上逐渐形成厚度均匀、具有一定硬度和附着力的水泥涂层，在此过程中可能析出水；最后将堵头装置拆卸取下，待析出水放出即可。
然而，长期以来，在上述将堵头装置拆卸取下的过程中，经常出现堵头将铸管端面涂覆的水泥粘掉的情况。因此，经常需要现场工作人员通过手动的方式重新修补水泥涂层以确保铸管内壁涂覆的水泥内衬的完整性。这样不仅延长了涂覆作业的工作时间、效率低下，同时还造成因手动修补而导致现场环境被水泥等工作介质污染，加大后续清理工作的难度。另外，通过这种后期修补所制造的铸管，其水泥涂层和铸管内壁的附着力也受到影响。在某些情况下，需要涂衬层的端面角度较小也是有可能的。
因此，亟待提供一种胶胎、骨架和堵头装置，以杜绝或至少减轻铸管端面水泥被粘掉，减少人力负担并保持作业现场环境的整洁性，另外还能够满足涂衬层端面角度较小的要求。
发明内容
本申请在一方面提供一种用于铸管涂衬的可充气胶胎，适于与骨架配合而形成堵头装置，所述可充气胶胎包括：
胶胎本体，其横截面大致为L形且内部空心，所述胶胎本体包括连接到彼此的成型壁、膨胀壁和接触壁，其中，成型壁适用于铸管，膨胀壁适配为能够在骨架内膨胀，接触壁适配为接触骨架，并且其中，膨胀壁包括第一部分和第二部分，并且其中，膨胀壁的第一部分在一端处连接到成型 壁并且在另一端处连接到膨胀壁的第二部分；
充气嘴，其连接到胶胎本体，用于向可充气胶胎内部充入膨胀介质以使可充气胶胎膨胀；
牵拉环带，其位于胶胎本体的内壁面并与之分别限定第一室和第二室，第一室大致沿轴向延伸，牵拉环带用于限制成型壁的轴向膨胀以保持成型壁的角度以及防止堵头装置脱落；和
至少一个通气孔，其分布在牵拉环带上并被配置成连通第一室和第二室。
可选地，所述的可充气胶胎中，膨胀壁的第一部分和第二部分这两者的内表面的夹角小于90度，膨胀壁的第二部分基本沿轴线延伸；并且其中，第二室大致沿径向延伸。
可替代地，所述的可充气胶胎，其中，胶胎本体还包括连接到接触壁和膨胀壁的连接处的固定环，并且其中，膨胀壁还包括第三部分、第四部分和第五部分，其中，第一部分、第二部分、第三部分、第四部分和第五部分依次连接，第二部分与第三部分连接于角部；并且其中，第二室大致呈V型；并且其中，未充气时，膨胀壁的第三部分的外表面和膨胀壁的第四部分的外表面之间的夹角小于90度，并且在被充气时，随着第二室的膨胀，所述夹角逐渐增大。
可选地，所述至少一个通气孔还被配置成：在充气时，第一室和第二室都能够充分膨胀，在放气时，第一室和第二室都能够充分缩回。
可选地，所述胶胎本体还包括至少一个防滑脱环，其配置在成型壁上，以确保堵头装置紧固在铸管上；
可选地，所述胶胎本体还包括至少一个防滑脱筋。
可选地，膨胀壁的第一部分的外表面和膨胀壁的第二部分的外表面之间的夹角大于90度。
可选地，膨胀壁的第二部分的外表面基本沿轴向延伸，并且其中，在未充气状态下，膨胀壁的第二部分的外表面与膨胀壁的第三部分的外表面之间的夹角小于90度，并且随着充气膨胀，该角度逐渐增大。
本申请在另一方面提供一种用于铸管涂衬的骨架，适于与上述的可充气胶胎配合而形成堵头装置，所述骨架包括限定容纳空间的容纳部分，
并且其中，所述容纳部分包括：在一端处连接到彼此的第一部件和第 二部件，其中，在轴向方向中，第一部件延伸超过第二部件，
其中，第二部件包括连接到彼此的基本上沿径向方向延伸的第一区段和基本上沿轴向方向延伸的第二区段，
并且其中，在骨架的第一部件上设置有可以与外界大气连通的贯穿孔，在骨架的第二部件上设置有可以与外界大气连通的至少一个呼吸孔。
可选地，所述第一部件为L型部件，所述第二部件为U型部件；所述容纳部分还包括连接L型部件和U型部件的台阶；L型部件包括位于轴向外侧的L型部件的第三区段，U型部件包括位于轴向外侧的第三区段，其中，限位台阶连接所述L型部件的第三区段的内表面和U型部件的第三区段的内表面。
可选地，所述限位台阶配置成：与L型部件的L型部件的第三区段的内表面形成的角度为90度；
可选地，限位台阶配置成，与U型部件的L型部件的第三区段的内表面形成的角度大于90度。
可替代地，所述第一部件为L型部件，所述第二部件为T型部件；所述容纳部分还包括位于T型部件上轴向外侧的突起，所述突起径向向外且轴向向外延伸；所述容纳空间还包括固定槽，所述固定槽由所述突起、L型部件和T型部件限定；并且其中，T型部件的第一区段包括大致轴向延伸的第一表面和大致径向延伸的第二表面，其径向外端与第一表面的轴向外端连接，T型部件的第二区段包括大致轴向延伸的第一表面，其轴向内端连接到第一区段的第二表面的径向内端。
可选地，所述骨架还包括：挡泥板，其具有连接段和遮挡段，其中，挡泥板通过连接段连接到容纳部分，所述遮挡段配置为封闭部分或具有开口，所述开口用于将用于注入水泥的布料管供给到铸管内。
本申请在又一方面提供一种用于铸管涂衬的堵头装置，包括：上述可充气胶胎和上述骨架，其中，所述骨架的容纳空间适配为接收所述可充气胶胎的胶胎本体，所述骨架的贯穿孔配置为适合可充气胶胎的充气嘴贯穿其中，所述可充气胶胎具有非充气的第一状态和充气膨胀的第二状态，并且其中，
充气前，可充气胶胎在第一状态中，胶胎本体配合到骨架的第一部件内，膨胀壁与骨架的第二部件的内表面之间限定膨胀型腔，所述膨胀型腔 限定可充气胶胎规范的伸缩路径，
充气时，胶胎本体膨胀，膨胀壁的部分X在所述限定的伸缩路径中沿预定方向规范地膨胀变形直至紧密贴合于第二部件的内表面，可充气胶胎(2)处于第二状态，以及
放气后，可充气胶胎返回第一状态，胶胎本体缩回，膨胀壁的部分Y与骨架的第二部件的内表面分离，重新形成膨胀型腔。
可选地，所述堵头装置中，膨胀壁的第二部分与骨架的U型部件的内表面之间限定膨胀型腔，其中，膨胀壁的所述部分X为膨胀壁的第二部分，所述预定方向为具有轴向和径向分量的第一方向；膨胀壁的所述部分Y为膨胀壁的第二部分。
可替代地，所述堵头装置中，所述固定槽配置为适合于所述固定环，并且其中，所述膨胀壁的所述部分X为膨胀壁的第一部分、第二部分和第三部分；所述预定方向为大致轴向的第二方向；膨胀壁的所述部分Y为膨胀壁的第四部分和第五部分。
因此，本申请提供了一种堵头装置，使得在充气胶胎和骨架之间形成膨胀型腔，从而令充气胶胎的成型壁在气压的作用下仍在规范的路径中伸缩，以此防止铸管内壁的水泥涂层被堵头装置粘掉，并且还具有降低人力成本、效率高、防止现场作业环境恶化等诸多优点；此外，本申请还能满足涂衬层端面角度较小的要求以及在将可充气胶胎放气拆卸堵头装置时，使得可充气胶胎在刚性骨架内能够准确复位，以保证重新形成膨胀型腔。
附图说明
图1示出了根据本申请的铸头装置的第一实施方式的局部剖视图，其中，可充气胶胎处于第一状态；
图2示出了根据本申请的铸头装置的第一实施方式的局部剖视图，其中，可充气胶胎处于第二状态；
图3示出了根据本申请的骨架的第一实施方式的局部剖视图；
图4示出了根据本申请的可充气胶胎的第一实施方式的局部剖视图；
图5A-B示出了根据本申请的可充气胶胎的第三和第四实施方式，其中，可充气胶胎具有防滑脱环和密封环；
图6示出了构造呼吸孔的其他可能的示例；
图7示出了根据本申请的铸头装置的第二实施方式的局部剖视图，其中，可充气胶胎处于第一状态；
图8示出了根据本申请的第二实施方式的铸头装置的局部剖视图，其中，可充气胶胎处于第二状态；
图9示出了根据本申请的骨架的第二实施方式的局部剖视图；
图10示出了根据本申请的可充气胶胎的第二实施方式的局部剖视图；和
图11A-B示出了根据本申请的可充气胶胎的第五和第六实施方式，其中，可充气胶胎具有防滑脱环。
具体实施方式
下面参照附图描述本申请的一些可行实施方式。需要指出，各图并非按比例绘制的。某些细节可能被加大以便清楚地展示，还有一些非必要示出的细节被略去。
需要注意的是，在本申请中，术语“轴向”“径向”相对于铸管的方向定义，是以铸管中心轴取向的。所使用的“轴向”和“径向”是描述性的(仅表示所述部件的相对方向)，而不以任何方式具有限定性(即，不特指某一具体方向)。术语“轴向内侧”、“轴向向内”指的是朝向铸管的方向。术语“径向内侧”、“径向向内”指的是朝向铸管轴线的方向。
如图1所示，本申请公开了第一实施方式的适用于骨架的可充气胶胎2、适用于可充气胶胎2的骨架3和包括所述骨架3和可充气胶胎2的堵头装置1。
如图1和图4所示，示出了本申请公开的第一实施方式的可充气胶胎2。可充气胶胎2包括胶胎本体20。该胶胎本体20的横截面大致为L型，其可以由任何合适的具有伸缩能力的材料制成，包括但不限于橡胶。胶胎本体20的内部为空心，以容纳膨胀介质，膨胀介质包括但不限于空气。可充气胶胎2包括在胶胎本体20内部的牵拉环带21。牵拉环带21的材料可以与可以为橡胶或其他任何合适的材料。所述牵拉环带21将胶胎本体20的内部分成第一室22和第二室23，其中，第一室22大致沿轴向延伸，第二室23大致沿径向延伸。牵拉环带21上分布有至少一个通气孔24。所述至少一个通气孔24连通第一室22和第二室23。所述至少一个通气孔24的大小 和/或形状可以是任何合适的大小和形状。在通气孔24为两个或以上的情况下，各通气孔24的大小和/或形状可以相同或不同。胶胎本体20包括连接到彼此的成型壁201、膨胀壁202和接触壁203。成型壁201适用于铸管5。膨胀壁202适配为能够在骨架3内膨胀。接触壁203适配为接触骨架3。成型壁201适配为用于铸管5的插口51。在可充气胶胎2的接触壁203上可安装有充气嘴26。充气嘴26内侧的一端可位于第一室22(如图1所示)或第二室23(未示出)的内表面。相应地，膨胀介质可经由充气嘴26被填充入到可充气胶胎2的第一室22或第二室23，并使其膨胀。因为通气孔24连通第一室22和第二室23，所以，相应地，第二室23或第一室22也膨胀。在膨胀过程中，牵拉环带21被撑紧，以保持可充气胶胎2的成型壁201的角度和形状基本恒定。
如图1和图3所示，示出了本申请公开的第一实施方式的骨架3。骨架3一般为刚性的。该骨架3可包括容纳部分31。容纳部分31限定容纳空间4。容纳部分31可包括L型部件311、U型部件312和限位台阶313。L型部件311和U型部件312彼此相对构造。L型部件311包括位于轴向外侧的L型部件的第三区段311c。U型部件312包括位于轴向外侧的第三区段312c。限位台阶313连接L型部件的第三区段311c和U型部件的第三区段312c。限位台阶313与L型部件311的L型部件的第三区段311c的内表面形成的角度可以为90度，限位台阶313与U型部件311的L型部件的第三区段311c的内表面形成的角度可以大于90度。沿着轴向向内的方向，L型部件延伸超过U型部件。
在实施方式中，如图3所示，L型部件311包括第一区段311a、第二区段311b和第三区段311c。第二区段311b沿着大致平行于轴向方向延伸，第二区段311b包括在轴向方向上相反的两端。第一区段311a连接到第二区段311b的轴向内侧的一端，并沿径向向内方向延伸一定距离。在实施方式中，第一区段311a的内表面和第二区段311b的内表面所成夹角为90度；在另一实施方式中，第一区段311a的内表面和第二区段311b的内表面所成夹角小于90度。第三区段311c连接到第二区段311b的轴向外侧的另一端，并沿径向向内方向延伸一定距离并连接到U型部件312，其中，在径向方向上看，该距离长于第一区段311a延伸的距离。在实施方式中，骨架3包括贯穿孔316。贯穿孔316可布置于第三区段311c。
在实施方式中，U型部件312可包括第一区段312a、第二区段312b和第三区段312c。第二区段312b基本上沿轴向方向延伸，第二区段312b包括轴向方向上相反的两端。第一区段312a连接到第二区段312b的轴向内侧的一端，并沿径向向外方向延伸一定距离。第一区段312a的内表面和第二区段312b的内表面的夹角小于或等于90度。第三区段312c在其一端处连接到第二区段312b的轴向外侧的另一端，第三区段312c在另一端处通过限位台阶313连接到L型部件311。U型部件312的第三区段312c的内表面与其第二区段312b的内表面之间的夹角可大于90度。U型部件312的第三区段312c的内表面与L型部件311的第三区段311c的内表面之间的夹角可大于90度。
在可充气胶胎2与骨架3配合使用的情况下，可充气胶胎2内嵌于骨架3限定的容纳空间4中。成型壁201与骨架2不接触。接触壁203接触和/或紧密贴合到骨架3的L型部件311的内表面。膨胀壁202在一端处连接到成型壁201；膨胀壁202在另一端处连接到接触壁203。由可充气胶胎2与U型部件312的内表面限定膨胀型腔41。
所述骨架3还包括贯穿孔316和至少一个呼吸孔317。贯穿孔316设置成在可充气胶胎2和骨架3配合使用的情况下适用于充气嘴的穿通，同时不影响胶胎本体20与骨架3之间的紧密贴合。所述至少一个呼吸孔317的一端布置在U型部件312的内表面处，连通膨胀型腔41和外界大气，使得膨胀型腔41内的气压始终与外界大气压平衡。
在本申请的实施方式中，可选地，骨架3还可包括挡泥板32。挡泥板32可以是本领域已知的任何合适的和/或适用于特定应用的构型和/或配置，其可包括连接段(可具有一定坡度(例如，用于大规格铸管)或形成为在同一平面的整体(例如，用于小规格铸管))和遮挡段。挡泥板32可通过连接段连接到容纳部分31。遮挡段可以是全封闭的，也可以具有开口，以用于注入水泥的布料管的进出铸管(5)内部。
如图1和图2所示，示出了本申请公开的包括所述骨架3和可充气胶胎2的堵头装置1。关于可充气胶胎2的特征以及骨架3的特征如上所述。以下详细描述堵头装置1的使用方法。
首先，将可充气胶胎2塞入骨架3的容纳部分31的L型部件311和U型部件312限定的容纳空间4中。调整可充气胶胎2和骨架3的相对位置， 使得充气嘴26穿过骨架3的贯穿孔316并且充气嘴26的外端暴露于外界大气，使得胶胎本体20的接触壁203配合到骨架3的L型部件311的内表面，使得膨胀壁202的至少部分与U型部件312的内表面限定膨胀型腔41，其中，限位台阶313的至少一部分抵靠于膨胀壁202的第二部分202b。以此方式，成型壁201和膨胀壁202的除所述至少部分的剩余部分暴露可见。这样，可充气胶胎2处于第一状态(非充气状态)。
然后，将堵头装置1外插到铸管5的插口51，使得成型壁201配合到插口51。然后，通过充气嘴26向胶胎本体20的内部充注膨胀介质，使得成型壁进一步紧固到铸管5的插口51；于此同时，膨胀壁202在U型部件312的内表面限定的路径中规范地膨胀，膨胀型腔41逐渐缩小直至消失，膨胀壁202逐渐紧密贴合于U型部件312的内表面。具体地，膨胀壁202的第一部分202a滑入U型部件312内并贴合于U型部件312的轴向内侧的内表面；膨胀壁202的第二部分202b贴合于U型部件312的径向内侧的内表面和轴向外侧的内表面。以此方式，堵头装置紧固到铸管5的插口51。这样，可充气胶胎2达到第二状态(充气膨胀状态)。
在本申请的实施方式中，骨架3的挡泥板32上具有开口，可以通过所述开口将用于水泥注入的布料管伸入铸管5内。接下来，通过动力装置使紧固有堵头装置1的铸管5沿其中央轴线高速旋转。利用离心作用，使水泥泥浆均匀地涂覆在铸管5的内壁，逐渐形成具有一定硬度和附着力的水泥内衬层52。在此过程中，可充气胶胎2处于第二状态(充气膨胀状态)。
最后，在完全形成水泥内衬层52后，将可充气胶胎2内的膨胀介质放出(放气)，膨胀壁202在U型部件312的内表面限定的路径中规范地缩回，膨胀型腔41重新产生并逐渐扩大，膨胀壁202与U型部件312的内表面分离。具体地，膨胀壁202的第一部分202a滑出U型部件312内并与U型部件312的轴向内侧的内表面分离；膨胀壁202的第二部分202b与U型部件312的径向内侧的内表面和轴向外侧的内表面分离。以此方式，重新形成膨胀型腔41。这样，可充气胶胎2返回到第一状态。
由于至少一个呼吸孔317的一端布置在U型部件312的内表面处，连通了膨胀型腔41和外界大气，使得膨胀型腔41内的气压始终与外界大气压平衡，从而避免了在放气过程中膨胀型腔41内吸入诸如工作介质(诸如，析出水和/或未固结的水泥泥浆)而影响堵头装置1的使用寿命和/或增加人 力负担。
现在，可以方便地将堵头装置1从铸管插口51取下，而不会粘掉水泥内衬层52。
在实施方式中，成型壁201包括顺序连接的第一部分201a、第二部分201b和第三部分201c。
成型壁的第一部分201a基本沿轴向方向延伸。在将堵头装置1安装到铸管5时，成型壁201的第一部分201a配合到铸管5的外表面。在可充气胶胎2被充气时，成型壁的第一部分201a在径向方向向内施加压力，使得成型壁的第一部分201a抵靠并紧密贴合于铸管的外表面。
成型壁的第二部分201b成型为配合铸管端口的倒角形状。在将堵头装置1安装到铸管5时，成型壁的第二部分201b配合到铸管5的倒角面。在可充气胶胎2被充气时，成型壁的第二部分201b抵靠并紧密贴合于铸管的倒角面。
成型壁的第三部分201c成型为配合铸管端面的形状。在将堵头装置1安装到铸管5时，成型壁的第三部分201c配合到铸管5的端面。在可充气胶胎2被充气时，成型壁的第三部分201c接触铸管5的端面，并向轴向向内方向施加压力，使得其抵靠并紧密贴合于铸管的端面。
在实施方式中，膨胀壁202包括第一部分202a、第二部分202b和第三部分202c。
膨胀壁的第一部分202a在一端处连接到成型壁201并且在另一端处(即，角部A)连接到膨胀壁的第二部分202b。第一部分202a的外表面和第二部分202b的外表面之间的夹角可以为90度。在将堵头装置1安装到铸管5时，角部A可推抵于U型部件的第一区段312a的内表面。在在将堵头装置1安装到铸管5的情况下，当可充气胶胎2被充气时，角部A沿U型部件的第一区段312a的内表面滑动而被导向，迫使膨胀壁202变形，直至膨胀型腔41消失。
膨胀壁的第二部分202b基本沿轴向延伸或基本平行于U型部件的第二区段202b的内表面延伸。第二部分202b在一端处(即，角部A)连接到膨胀壁的第一部分202a并在另一端处连接到膨胀壁的第三部分202c。一般地，膨胀壁的第二部分202b的外表面与膨胀壁的第三部分202c的外表面之间的夹角大于90度。在将堵头装置1安装到铸管5还未被充气时，第二 部分202b距离U型部件的第二区段312b一定距离。在可充气胶胎2被充气时，膨胀壁的第二部分202b沿具有轴向和径向分量的第一方向膨胀变形，不断靠近U型部件的第二区段312b的内表面直至紧密贴合。
膨胀壁的第三部分202c在一端处连接到第二部分202b并在另一端处连接到接触壁203。一般地，膨胀壁的第三部分202c的外表面与接触壁203的外表面之间的夹角大于90度。在将堵头装置1安装到铸管5时，膨胀壁的第三部分202c的(连接于接触壁的)一端抵靠于限位台阶313，无论是否充气。在可充气胶胎2被充气时，膨胀壁的第三部分202c沿具有轴向和径向分量的第一方向膨胀变形，直至膨胀型腔41消失并且膨胀壁的第三部分202c紧密贴合到U型部件的第三区段312c。
需要注意的是，上述“具有轴向和径向分量的第一方向”指的是由膨胀型腔41限定的伸缩路径轴向向内且径向向内的方向。
在实施方式中，接触壁203包括第一部分203a、第二部分203b和第三部分203c。
接触壁的第一部分203a基本沿配合于L型部件的第一区段311a的内表面的方向延伸。第一部分203a在一端处连接到成型壁201并在另一端处连接到接触壁的第二部分203b。在将堵头装置1安装到铸管5时，第一部分203a接触L型部件的第一区段311a。在可充气胶胎2被充气时，第一部分203a向L型部件的第一区段311a施加压力以紧密贴合于其上。
接触壁的第二部分203b基本沿配合于L型部件的第二区段311b的内表面的方向延伸。接触壁的第二部分203b在一端处连接到接触壁的第一部分203a并在另一端处连接到接触壁的第三部分203c。在将堵头装置1安装到铸管5时，第二部分203b接触L型部件的第二区段311b。在可充气胶胎2被充气时，第二部分203b向L型部件的第二区段311b施加压力以紧密贴合于其上。
接触壁的第三部分203基本上沿配合于L型部件的第三区段311c的内表面的方向延伸。接触壁的第三部分203c在一端处连接到接触壁的第二部分203b并在另一端处连接到膨胀壁202。在将堵头装置1安装到铸管5时，第三部分203c接触L型部件的第三区段311c。在可充气胶胎2被充气时，第三部分203c向L型部件的第三区段311c施加压力以紧密贴合于其上。
在本申请的实施方式中，通气孔24连通第一室22和第二室23，使得 在充气时，第一室22和第二室23都能够充分膨胀，在放气时，第一室22和第二室23都能够充分缩回。
在本申请的实施方式中，牵拉环带21限制成型壁201在轴向方向的膨胀，有助于使得膨胀壁202如上所述规范地在U型部件312限制的路径中膨胀或缩回，以防止粘掉水泥内衬层52的风险。
在本申请的实施方式中，当可充气胶胎2与骨架3配合使用时，胶胎本体20的与骨架3的L型部件的第三区段311c的内表面接触的接触壁203始终(在第一状态和第二状态都)紧密贴合骨架3的L型部件的第三区段311c的内表面，而无论可充气胶胎2充气或放气。
在本申请的实施方式中，当可充气胶胎2与骨架3配合使用时，限位台阶313始终(在第一状态和第二状态都)抵靠在膨胀壁202的第二部分202b上，而无论可充气胶胎2充气或放气。
如图5A-B所示，在本申请的另一实施方式中，可充气胶胎2的胶胎本体20还可包括至少一个防滑脱环204a和可选的至少一个防滑脱筋204b。所述至少一个防滑脱环204a配置在成型壁201上，优选地配置在成型壁201的第一部分201a上。所述至少一个防滑脱环204a以铸管轴为中心沿径向分布，当充气时，所述至少一个防滑脱环204a提供了空间，以防止成型壁201因膨胀出现褶皱而影响胶胎和铸管的紧密贴合。
可选地，可充气胶胎还可包括至少一个防滑脱筋204b。所述至少一个防滑脱筋204b沿轴向分布，在其一端连接到所述至少一个防滑脱环204a，在其另一端连接到成型壁的第一部分201a。在实施方式中，如图5A所示，防滑脱筋204b的外表面可以与成型壁的第一部分201a的外表面不在同一圆柱或圆锥面内，而是相对于成型壁位于径向向外一定距离的圆柱或圆锥面内，如图5A中的局部放大图I所示；在另一实施方式中，如图5B所示，防滑脱筋204b的外表面可以与成型壁的第一部分201a的外表面在同一圆柱或圆锥面中，如图5B中的局部放大图I所示。防滑脱环204a和/或防滑脱筋204b用于确保堵头装置1紧固在铸管5上，即使在铸管5高速旋转的情况下也不易脱落。
如图5A-B所示，在本申请的又一实施方式中，可充气胶胎2的胶胎本体20还可包括至少一个密封环205。所述少一个密封环205可配置在膨胀壁202的第一部分202a上，以防止可充气胶胎2放气后从第二状态返回第 一状态的过程中膨胀型腔41内吸入诸如析出水和/或未涂覆在铸管5内壁上的水泥等工作介质。
在本申请的其他实施方式中，呼吸孔317的一端可以位于骨架3的U型部件312的内表面上，另一端可以位于骨架3的通向外界大气的任何合适的位置处，诸如图6所示的实施方式，而不局限于与用于充气嘴26的贯穿孔316位于同一侧。
如图7所示，示出了本申请的另一种适用于骨架的可充气胶胎2、适用于可充气胶胎2的骨架3和包括所述骨架3和可充气胶胎2的堵头装置1。
如图7和图10所示，示出了本申请公开的可充气胶胎2。可充气胶胎2包括胶胎本体20。该胶胎本体20的横截面与图1中公开的胶胎本体20的横截面不同。可充气胶胎2包括如参考图1所述的牵拉环带21。所述牵拉环带21将胶胎本体20的内部分成第一室22和第二室23，其中，第一室22大致沿轴向延伸，第二室23的横截面大致呈V型，分别大致沿径向和轴向延伸。牵拉环带21上分布有如参考图1所述的至少一个通气孔24。
胶胎本体20包括连接到彼此的成型壁201、膨胀壁202和接触壁203，其也具有与参考图1所述的特征，在此不与赘述。
本申请公开的胶胎2还可包括固定环206。固定环206连接到接触壁203和膨胀壁202的连接处。制成固定环206的材料可以是任何合适的材料，可以和制成接触壁203和/或膨胀壁202的材料相同或不同。
如图7和图9所示，示出了本申请公开的骨架3。骨架3一般为刚性的。该骨架3可包括容纳部分31。容纳部分31限定容纳空间4。容纳部分31可包括L型部件311、T型部件312和位于T型部件312上的沿径向向外方向延伸的突起。L型部件311和T型部件312连接到彼此。L型部件311包括位于轴向外侧的L型部件的第三区段311c。T型部件312包括大致沿轴向延伸的第二区段312b。L型部件的第三区段311c和T型部件的第二区段312b连接到彼此。沿着轴向向内的方向，L型部件延伸超过T型部件。
容纳空间4可包括固定槽313’，其配合于可充气胶胎2的固定环206。由位于T型部件312上的突起限定固定槽313’的轴向内侧的表面。
在实施方式中，如图9所示，L型部件311包括第一区段311a、第二区段311b和第三区段311c。第二区段311b沿着大致平行于轴向方向延伸，第二区段311b包括在轴向方向上相反的两端。第一区段311a连接到第二 区段311b的轴向内侧的一端，并沿径向向内方向延伸一定距离。在实施方式中，第一区段311a的内表面和第二区段311b的内表面所成夹角为90度；在另一实施方式中，第一区段311a的内表面和第二区段311b的内表面所成夹角小于90度。第三区段311c连接到第二区段311b的轴向外侧的另一端，并沿径向向内方向延伸一定距离并连接到T型部件312，其中，在径向方向上看，该距离长于第一区段311a延伸的距离。在实施方式中，骨架3包括贯穿孔316。贯穿孔316可布置于第三区段311c。
在实施方式中，T型部件312可包括第一区段312a和第二区段312b。第一区段312a包括基本沿轴向延伸的第一表面312a1和与之连接的大致沿径向延伸并位于轴向内侧的第二表面312a2。第二区段312b包括大致沿轴向延伸并位于径向外侧的第一表面312b1。在第二区段312b的第一表面312b1的靠近轴向外侧处具有径向向外延伸的突起。所述突起限定固定槽313’的轴向内侧的表面。第二区段312b基本上沿轴向方向延伸，第二区段312b包括轴向方向上相反的两端。第一区段312a连接到第二区段312b的轴向内侧的一端，并沿径向向外方向延伸一定距离。第一区段312a的第二表面312a2和第二区段312b的第一表面312b1的夹角等于或略大于90度。第二区段312b在另一端处连接到L型部件311。T型部件312的第二区段312b的第一表面312b1与L型部件311的第三区段311c的内表面之间的夹角可大于90度。
在可充气胶胎2与骨架3配合使用的情况下，由胶胎本体20与T型部件312的内表面限定膨胀型腔41。
所述骨架3还包括贯穿孔316和至少一个呼吸孔317。所述贯穿孔316和至少一个呼吸孔317的特征如上所述，在此不再赘述。
可选地，骨架3还可包括挡泥板32。挡泥板32的特征如上所述，在此不再赘述。
如图7和图8所示，示出了包括所述骨架3和可充气胶胎2的堵头装置1的第二实施方式。以下详细描述堵头装置1的使用方法。
首先，将可充气胶胎2塞入骨架3的容纳部分31的L型部件311和T型部件312限定的容纳空间4中。调整可充气胶胎2和骨架3的相对位置，使得充气嘴26穿过骨架3的贯穿孔316并且充气嘴26的外端暴露于外界大气，使得胶胎本体20的接触壁203配合到骨架3的L型部件311的内表 面，使得膨胀壁202的至少部分与T型部件312的表面312a2、312b1限定膨胀型腔41，其中，可充气胶胎2的固定环206紧固在骨架限定的固定槽313’中。以此方式，成型壁201和膨胀壁202的除所述至少部分外的剩余部分暴露可见。这样，可充气胶胎2处于第一状态(非充气状态)。
然后，将堵头装置1外插到铸管5的插口51，使得成型壁201配合到插口51。然后，通过充气嘴26向胶胎本体20内部充注膨胀介质，使得成型壁进一步紧固到铸管5的插口51；于此同时，膨胀壁202的一部分在T型部件312的表面312a2、312b1限定的伸缩路径中规范地膨胀，膨胀型腔41逐渐缩小直至消失，膨胀壁202的所述一部分逐渐紧密贴合于T型部件312的表面312a2、312b1。膨胀壁202的除了所述一部分的剩余部分轴向延伸，并使得在径向方向上抵靠T型部件的第一区段312a的第一表面312a1。以此方式，堵头装置紧固到铸管5的插口51。这样，可充气胶胎2达到第二状态(充气膨胀状态)。
在涂衬铸管内壁的过程中，可充气胶胎2处于第二状态(充气膨胀状态)。
最后，在形成水泥内衬层52后，将可充气胶胎2内的膨胀介质放出(放气)，膨胀壁202在T型部件312的表面312a2、312b1限定的伸缩路径中规范地缩回，膨胀型腔41重新产生并逐渐增大，膨胀壁202与T型部件312的表面312a2、312b1分离。以此方式，重新形成膨胀型腔41。这样，可充气胶胎2返回到第一状态。
由于至少一个呼吸孔317的一端布置在T型部件312的表面312a2、312b1处，连通膨胀型腔41和外界大气，使得膨胀型腔41内的气压始终与外界大气压平衡。
最后，可以方便地将堵头装置1从铸管插口51取下，而不会粘掉水泥内衬层52。
在实施方式中，成型壁201包括顺序连接的第一部分201a、第二部分201b和第三部分201c。其特征如参照图1的实施方式所述，在此不再赘述。
在实施方式中，膨胀壁202包括依次连接的第一部分202a、第二部分202b、第三部分202c、第四部分202d和第五部分202e。
第一部分202a在一端处连接到成型壁201并且在另一端处连接到膨胀壁的第二部分202b。第一部分202a的外表面和第二部分202b的外表面之 间的夹角可以略大于90度。在可充气胶胎2被充气时，膨胀壁的第一部分202a沿大致轴向方向的第二方向膨胀移动直至膨胀型腔41消失，并基本保持其与成型壁201的角度。
第二部分202b的外表面基本沿轴向延伸。第二部分202b在一端处连接到膨胀壁的第一部分202a并在另一端处(即，角部A)连接到膨胀壁的第三部分202c。一般地，在未充气状态下，膨胀壁的第二部分202b的外表面与膨胀壁的第三部分202c的外表面之间的夹角小于90度，并且随着充气膨胀，该角度逐渐增大至大于90度。在将堵头装置1安装到铸管5还未被充气时，第二部分202b连接到第三部分202c的角部A可推抵于T型部件的第一区段312a的第一表面312a1。在可充气胶胎2被充气时，所述角部(A)沿T型部件的第一区段的第一表面(312a1)滑动而被导向，迫使膨胀壁(202)变形，同时，膨胀壁的第二部分202b沿大致轴向方向的第二方向膨胀变形直至膨胀型腔41完全消失；膨胀壁的第二部分202b的外表面与膨胀壁的第三部分202c的外表面之间的夹角逐渐增大，从小于90度增大到大于90度。
膨胀壁的第三部分202c在一端处(即，角部A)连接到第二部分202b并在另一端处连接到膨胀壁的第四部分202d。一般地，在未充气状态下，膨胀壁的第三部分202c的外表面与膨胀壁的第四部分202d的外表面之间的夹角小于90度，并且在充气膨胀状态下，逐渐增大至大于90度。在将堵头装置1安装到铸管5时，膨胀壁的第三部分202c的连接到第二部分202b的角部A可推抵于T型部件的第一区段312a的第一表面312a1。在可充气胶胎2被充气时，角部A在第一表面312a1上滑动，膨胀壁的第三部分202c的与第四部分202d连接的另一端逐渐靠近T型部件的第一区段312a的第一表面312a1和第二表面312a2的连接处直到重合，同时，膨胀壁的第三部分202c在沿大致轴向的第二方向膨胀变形，使得膨胀壁的第三部分202c紧密贴合到T型部件的第一区段312a的第一表面312a1；膨胀壁的第三部分202c的外表面与膨胀壁的第四部分202d的外表面之间的夹角逐渐变大，从小于90度增大到大于90度。
需要注意的是，上述“大致轴向的第二方向”指的是由T型部件的第一区段的第一表面312a1限定的、以轴线为母线的锥度不大于10°，可选的不大于5°，的轴向向内方向。所述锥度可以是由轴向向内方向发散，也可 是是轴向向外方向发散。
第四部分202d在其一端处连接到第三部分202c并在另一端处连接到第五部分202e。一般地，在未充气的情况下，第四部分202d的外表面与第五部分202e的外表面之间的夹角小于90度，而在充气膨胀的情况下，逐渐增大到等于或大于90度。在将堵头装置1安装到铸管还未充气时，第四部分202c不与骨架3的任何部分接触。在可充气胶胎2被充气时，第四部分202c大致沿具有轴向和纵向分量的第一方向膨胀变形，直到接触并紧密贴合到T型部件的第一区段的第二表面312a2，同时第四部分202d的外表面与第五部分202e的外表面之间的夹角逐渐增大，从小于90度增大到等于或大于90度。
第五部分202e在一端处连接到第四部分202d并在另一端处连接到接触壁203。第五部分202e大致平行于T型部件的第二区段的第一表面312b1方向延伸。第五部分202e与接触壁203连接的一端处连接有固定环206。在将堵头装置1安装到铸管还未充气时，第五部分202e不与骨架3的任何部分接触；固定环206紧固在骨架限定的固定槽313’中。在可充气胶胎2被充气时，第五部分202e径向向内膨胀移动，第五部分202e的与接触壁203连接的端抵靠于固定槽313’上方的突起，第五部分202e的与第四部分202d连接的端膨胀移动，直到与骨架的第一区段的第二表面312a2和第二区段的第一表面312b1的连接处重合，同时第五部分202e沿具有轴向和径向分量的第一方向膨胀变形，使得膨胀型腔41完全消失。
需要注意的是，上述“具有轴向和径向分量的第一方向”指的是由膨胀型腔41限定的伸缩路径轴向向内且径向向内的方向。
在实施方式中，接触壁203包括顺序连接的第一部分203a、第二部分203b和第三部分203c。其特征如参照图1的实施方式所述，在此不再赘述。
在本申请的实施方式中，当可充气胶胎2与骨架3配合使用时，可充气胶胎2的固定环206始终(在第一状态和第二状态都)紧固在骨架3的固定槽313’中，而无论可充气胶胎2被充气或放气。
如图11A-B所示，第二实施方式的可充气胶胎2的胶胎本体20还可包括如参考图1所述的至少一个防滑脱环204a和可选的至少一个防滑脱筋204b，或者至少一个防滑脱筋204b。
在本申请的实施方式中，可充气胶胎2可以是一次性的也可以是可重 复使用的。这可以取决于，诸如，构成可充气胶胎2的材料、制作工艺和应用目的。
在本申请的实施方式中，充气嘴26可以是一个或多个。相应地，贯穿孔316配置成适合于充气嘴26的数量和形状。
在本申请的实施方式中，可充气胶胎2内部所充膨胀介质可以是适用于具体场景需要的任何气体，包括但不限于空气和/或氮气等惰性气体。在某些情况下，膨胀介质不限于气体，也包括，例如，液体。相应地，本申请所述的充气嘴26并不局限于用于填充气体，而是可以用于充入任何合适的膨胀介质的装置。
在本申请的实施方式中，胶胎还可包括除第一室22和第二室23以外的其他室(例如第三室等)，可用于进一步保持成型壁的角度和防止胶胎本体20移位。
虽然在本申请中以水泥涂衬举例，但是本申请的应用范围并不限于水泥涂衬。
虽然在本申请中以铸管的插口端作为示例描述了本申请的骨架3、可充气胶胎2和堵头装置1，但本申请的骨架3、可充气胶胎2和堵头装置1还可以用于铸管的承口端。
虽然在铸管的实施例中描述了本申请的骨架3、可充气胶胎2和堵头装置1，但本申请的骨架3、可充气胶胎2和堵头装置1的应用范围并不局限于铸管，同样也使用于与铸管类似的其他需要密封的管材。
虽然这里参考具体的实施方式描述了本申请，但是本申请的范围并不局限于所示的细节。在不偏离本申请的基本原理的情况下，可针对这些细节做出各种修改。

Claims (15)

  1. 一种用于铸管(5)涂衬的可充气胶胎(2)，适于与骨架(3)配合而形成堵头装置(1)，所述可充气胶胎(2)包括：
    胶胎本体(20)，其横截面大致为L形且内部空心，所述胶胎本体(20)包括连接到彼此的成型壁(201)、膨胀壁(202)和接触壁(203)，其中，成型壁(201)适用于铸管(5)，膨胀壁(202)适配为能够在骨架(3)内膨胀，接触壁(203)适配为接触骨架(3)，并且其中，膨胀壁(202)包括第一部分(202a)和第二部分(202b)，并且其中，膨胀壁的第一部分(202a)在一端处连接到成型壁(201)并且在另一端处连接到膨胀壁的第二部分(202b)；
    充气嘴(26)，其连接到胶胎本体(20)，用于向可充气胶胎(2)内部充入膨胀介质以使可充气胶胎(2)膨胀；
    牵拉环带(21)，其位于胶胎本体(20)的内壁面并与之分别限定第一室(22)和第二室(23)，第一室(22)大致沿轴向延伸，牵拉环带(21)用于限制成型壁(201)的轴向膨胀以保持成型壁的角度以及防止堵头装置(1)脱落；和
    至少一个通气孔(24)，其分布在牵拉环带(21)上并被配置成连通第一室(22)和第二室(23)。
  2. 根据权利要求1所述的可充气胶胎(2)，其中，
    膨胀壁(202)的第一部分(202a)和第二部分(202b)这两者的内表面的夹角小于90度，膨胀壁的第二部分(202b)基本沿轴线延伸；
    并且其中，第二室(23)大致沿径向延伸。
  3. 根据权利要求1所述的可充气胶胎(2)，其中，
    胶胎本体(20)还包括连接到接触壁(203)和膨胀壁(202)的连接处的固定环(206)，
    并且其中，膨胀壁(202)还包括第三部分(202c)、第四部分(202d)和第五部分(202e)，其中，第一部分(202a)、第二部分(202b)、第三部分(202c)、第四部分(202d)和第五部分(202e)依次连接，第二部分 (202b)与第三部分(202c)连接于角部(A)；
    并且其中，第二室大致呈V型；
    并且其中，未充气时，膨胀壁的第三部分(202c)的外表面和膨胀壁的第四部分(202d)的外表面之间的夹角小于90度，并且在被充气时，随着第二室(23)的膨胀，所述夹角逐渐增大。
  4. 根据权利要求2或3所述的可充气胶胎(3)，其中，所述至少一个通气孔(24)还被配置成：在充气时，第一室(22)和第二室(23)都能够充分膨胀，在放气时，第一室(22)和第二室(23)都能够充分缩回。
  5. 根据权利要求2或3所述的可充气胶胎(2)，其中，所述胶胎本体(20)还包括至少一个防滑脱环(204a)，其配置在成型壁(201)上，以确保堵头装置(1)紧固在铸管(5)上；
    可选地，所述胶胎本体(20)还包括至少一个防滑脱筋(204b)。
  6. 根据权利要求3所述的可充气胶胎(2)，其中，膨胀壁(202)的第一部分(202a)的外表面和膨胀壁(202)的第二部分(202b)的外表面之间的夹角大于90度。
  7. 根据权利要求3所述的可充气胶胎(2)，其中，膨胀壁(202)的第二部分(202b)的外表面基本沿轴向延伸，并且其中，在未充气状态下，膨胀壁的第二部分(202b)的外表面与膨胀壁的第三部分(202c)的外表面之间的夹角小于90度，并且随着充气膨胀，该角度逐渐增大。
  8. 一种用于铸管(5)涂衬的骨架(3)，适于与权利要求1所述的可充气胶胎(2)配合而形成堵头装置(1)，所述骨架(3)包括限定容纳空间(4)的容纳部分(31)，
    并且其中，所述容纳部分(31)包括：在一端处连接到彼此的第一部件(311)和第二部件(312)，其中，在轴向方向中，第一部件(311)延伸超过第二部件(312)，
    其中，第二部件(312)包括连接到彼此的基本上沿径向方向延伸的第 一区段(312a)和基本上沿轴向方向延伸的第二区段(312b)，
    并且其中，在骨架(3)的第一部件(311)上设置有可以与外界大气连通的贯穿孔(316)，在骨架(3)的第二部件(312)上设置有可以与外界大气连通的至少一个呼吸孔(317)。
  9. 根据权利要求8所述的骨架(3)，适于与权利要求2所述的可充气胶胎(2)配合而形成堵头装置(1)，其中，
    所述第一部件(311)为L型部件，所述第二部件(312)为U型部件；所述容纳部分(31)还包括连接L型部件和U型部件的台阶(313)；
    L型部件(311)包括位于轴向外侧的L型部件的第三区段(311c)，U型部件(312)包括位于轴向外侧的第三区段(312c)，其中，限位台阶(313)连接所述L型部件的第三区段(311c)的内表面和U型部件的第三区段(312c)的内表面。
  10. 根据权利要求9所述的骨架(3)，其中，所述限位台阶(313)配置成：与L型部件(311)的L型部件的第三区段(311c)的内表面形成的角度为90度；
    可选地，限位台阶(313)配置成，与U型部件(311)的L型部件的第三区段(311c)的内表面形成的角度大于90度。
  11. 根据权利要求8所述的骨架(3)，适于与权利要求3所述的可充气胶胎(2)配合而形成堵头装置(1)，其中，
    所述第一部件(311)为L型部件，所述第二部件(312)为T型部件；所述容纳部分(31)还包括位于T型部件(312b)上轴向外侧的突起，所述突起径向向外且轴向向外延伸；
    所述容纳空间(4)还包括固定槽(313’)，所述固定槽(313’)由所述突起、L型部件和T型部件限定；
    并且其中，T型部件(312)的第一区段(312a)包括大致轴向延伸的第一表面(312a1)和大致径向延伸的第二表面(312a2)，其径向外端与第一表面(312a1)的轴向外端连接，T型部件(312)的第二区段(312b)包括大致轴向延伸的第一表面(312b1)，其轴向内端连接到第一区段(312a) 的第二表面(312a2)的径向内端。
  12. 根据权利要求9或11所述的骨架(3)，还包括：挡泥板(32)，其具有连接段和遮挡段，其中，挡泥板(32)通过连接段连接到容纳部分(31)，所述遮挡段配置为封闭部分或具有开口，所述开口用于将用于注入水泥的布料管供给到铸管(5)内。
  13. 一种用于铸管(5)涂衬的堵头装置(1)，包括：权利要求1所述的可充气胶胎(2)和权利要求8所述的骨架(3)，其中，所述骨架(3)的容纳空间(4)适配为接收所述可充气胶胎(2)的胶胎本体(20)，所述骨架(3)的贯穿孔(316)配置为适合可充气胶胎(2)的充气嘴(26)贯穿其中，所述可充气胶胎(2)具有非充气的第一状态和充气膨胀的第二状态，并且其中，
    充气前，可充气胶胎(2)在第一状态中，胶胎本体(20)配合到骨架(3)的第一部件(311)内，膨胀壁(202)与骨架(3)的第二部件(312)的内表面之间限定膨胀型腔(41)，所述膨胀型腔(41)限定可充气胶胎(2)规范的伸缩路径，
    充气时，胶胎本体(20)膨胀，膨胀壁(202)的部分X在所述限定的伸缩路径中沿预定方向规范地膨胀变形直至紧密贴合于第二部件(312)的内表面，可充气胶胎(2)处于第二状态，以及
    放气后，可充气胶胎(2)返回第一状态，胶胎本体(20)缩回，膨胀壁(202)的部分Y与骨架(3)的第二部件(312)的内表面分离，重新形成膨胀型腔(41)。
  14. 根据权利要求13所述的堵头装置(1)，包括：权利要求2所述的可充气胶胎(2)和权利要求9所述的骨架(3)，其中，膨胀壁(202)的第二部分(202b)与骨架的U型部件(312)的内表面之间限定膨胀型腔(41)，其中，膨胀壁(202)的所述部分X为膨胀壁(202)的第二部分(202b)，所述预定方向为具有轴向和径向分量的第一方向；膨胀壁(202)的所述部分Y为膨胀壁的第二部分(202b)。
  15. 根据权利要求13所述的堵头装置(1)，包括：权利要求3所述的可充气胶胎(2)和权利要求11所述的骨架(3)，其中，所述固定槽(313’)配置为适合于所述固定环(206)，
    并且其中，所述膨胀壁(202)的所述部分X为膨胀壁(202)的第一部分(202a)、第二部分(202b)和第三部分(202c)；所述预定方向为大致轴向的第二方向；膨胀壁(202)的所述部分Y为膨胀壁的第四部分(202d)和第五部分(202e)。
PCT/CN2019/096072 2019-05-29 2019-07-16 用于铸管涂衬的可充气胶胎、骨架和堵头装置 WO2020237796A1 (zh)

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CN2369795Y (zh) * 1999-04-09 2000-03-22 马鞍山市橡胶制品厂 全胶无骨架式充气胶囊
CN2573084Y (zh) * 2002-09-29 2003-09-17 马鞍山宏力橡胶制品有限公司 一种用作铸铁管插口堵头的充气胶胎
CN205673155U (zh) * 2016-06-07 2016-11-09 井朝纲 一种铸管涂衬插口堵头充气胶胎

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2246827A (en) * 1990-08-08 1992-02-12 Int Pipeline Products Ltd Pipe stopper
CN2369795Y (zh) * 1999-04-09 2000-03-22 马鞍山市橡胶制品厂 全胶无骨架式充气胶囊
CN2573084Y (zh) * 2002-09-29 2003-09-17 马鞍山宏力橡胶制品有限公司 一种用作铸铁管插口堵头的充气胶胎
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