CN220353876U - Compression type sealing gasket suitable for socket joint type joint segment joint - Google Patents
Compression type sealing gasket suitable for socket joint type joint segment joint Download PDFInfo
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- CN220353876U CN220353876U CN202321977017.3U CN202321977017U CN220353876U CN 220353876 U CN220353876 U CN 220353876U CN 202321977017 U CN202321977017 U CN 202321977017U CN 220353876 U CN220353876 U CN 220353876U
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- 238000007789 sealing Methods 0.000 title claims abstract description 128
- 230000006835 compression Effects 0.000 title claims abstract description 28
- 238000007906 compression Methods 0.000 title claims abstract description 28
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical class OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000004760 aramid Substances 0.000 claims description 3
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 241001391944 Commicarpus scandens Species 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Abstract
The application relates to the field of tunnel waterproof structures, and particularly discloses a compression type sealing gasket suitable for a duct piece joint of a socket joint type connector, which comprises a sealing gasket body, a tensile member and a drag reduction layer, wherein the sealing gasket body is provided with a first end face attached to the bottom wall of a duct piece groove and a second end face arranged opposite to the first end face; the tensile piece is arranged in the sealing gasket body in a penetrating manner along the length direction of the sealing gasket body and is used for limiting the tensile deformation of the sealing gasket; the drag reduction layer is arranged on the second end face and used for reducing sliding friction force between two adjacent sealing gaskets. The sealing gasket can improve the problem that the sealing gasket is easy to stretch and deform due to friction when the pipe piece longitudinal joint is connected, so that the sealing gasket is not easy to deviate from the pipe piece groove.
Description
Technical Field
The application relates to the field of tunnel waterproof structures, in particular to a compression type sealing gasket suitable for a socket joint type joint segment joint.
Background
The shield segment is the innermost barrier of the tunnel and bears the actions of resisting soil layer pressure, underground water pressure and some special loads, and in order to ensure the waterproof performance of the shield segment, a sealing gasket is generally adopted to seal and stop water for the adjacent segment. Before the duct piece is assembled, the sealing gasket is arranged in the groove around the duct piece; when the duct pieces are assembled, the sealing gaskets between the adjacent duct pieces are tightly extruded, so that the sealing water stopping effect is achieved.
At present, a socket joint technology is widely adopted to realize connection between duct pieces, and a socket joint structure generally comprises a circular seam joint connector and a longitudinal seam joint connector. Wherein, the annular seam adopts a plug-in connecting piece which can be directly inserted and automatically completes snap-in installation of the male and female connectors under the action of thrust, and the longitudinal seam adopts a plug-in connector shaped like a C-T. When the duct pieces are installed, the longitudinal joints of two adjacent duct pieces are abutted, the duct pieces to be installed are pushed along the extending direction of the longitudinal joints, and in the process that the two adjacent duct pieces slide relatively, the C-shaped piece on one duct piece is connected with the T-shaped piece on the adjacent duct piece, so that the connection of the longitudinal joints is realized.
The sealing gasket is usually made of elastic materials and is easy to deform under the action of external force; in the longitudinal joint connection process, two adjacent duct pieces slide relatively, the sealing gasket arranged on the side edge of the duct piece is rubbed by the adjacent sealing gasket, stretching deformation is easy to generate, and the deformed sealing gasket is easy to deviate from the duct piece groove, so that the sealing water stopping effect is affected.
Disclosure of Invention
In order to solve the problem that the sealing gasket is easy to break out of the duct piece groove due to friction and tensile deformation during longitudinal joint connection, the application provides a compression type sealing gasket suitable for a socket joint type joint duct piece joint.
The application provides a compression type sealing gasket suitable for socket joint formula joint section of jurisdiction seam adopts following technical scheme:
a compression gasket adapted for use in a socket joint segment joint, comprising:
the sealing gasket body is provided with a first end face attached to the bottom wall of the duct piece groove and a second end face arranged opposite to the first end face;
the tensile piece is arranged in the sealing gasket body in a penetrating manner along the length direction of the sealing gasket body and used for limiting the tensile deformation of the sealing gasket;
and the drag reduction layer is arranged on the second end face and used for reducing sliding friction force between two adjacent sealing gaskets.
When the sealing gasket body is installed, firstly, an adhesive is coated in the first end face and the duct piece groove, then the sealing gasket body is adhered to the duct piece groove, at the moment, the first end face is attached to the bottom wall of the duct piece groove, compared with a common sealing gasket with a comb-tooth-shaped structure, the bonding area between the sealing gasket body and the inner wall of the duct piece groove is larger, the bonding firmness is improved, and the sealing gasket body is prevented from falling out of the duct piece groove; in the longitudinal joint connection process of the socket joint pipe pieces, two adjacent pipe pieces slide relatively along the extending direction of the longitudinal joint, and the drag reduction layer is beneficial to reducing sliding friction force between two adjacent sealing gasket bodies, so that the tensile deformation of the sealing gasket bodies caused by friction is reduced; meanwhile, the tensile member penetrating through the sealing gasket body is beneficial to limiting the stretching deformation of the sealing gasket body, so that the problem that the sealing gasket body is easy to break out of the duct piece groove due to the stretching deformation is solved.
Further, the tensile member is provided with a plurality of, and a plurality of the tensile member is followed the width direction of sealed pad body is interval arrangement in proper order. When the sealing gasket body stretches under the action of external force, the plurality of tensile pieces play a supporting role on the sealing gasket body together, and the deformation resistance of the sealing gasket body is improved.
Further, the tensile member is selected from one or more of steel wires, carbon fibers and aramid fibers. The elastic modulus of the tensile member is greater than that of the sealing gasket body, and when the sealing gasket body stretches under the action of external force, the tensile member is beneficial to improving the deformation resistance of the sealing gasket body.
Further, the drag reduction layer is an organosilicon modified acrylic layer. When the second end surfaces of the two sealing gasket bodies are mutually abutted and relatively slide, the organosilicon modified acrylic acid layer is favorable for reducing the friction force between the two adjacent sealing gasket bodies, so that the tensile deformation of the sealing gasket caused by mutual friction is reduced.
Further, the sealing gasket body is provided with third end faces on two sides of the width direction of the first end faces respectively, and the third end faces are attached to the side walls of the duct piece grooves.
When the sealing gasket body is installed, firstly, the adhesive is coated on the first end face, the third end face and the duct piece groove, then the sealing gasket body is adhered to the duct piece groove, at the moment, the first end face is adhered to the bottom wall of the duct piece groove, the third end face is adhered to the side wall of the duct piece groove, and compared with a sealing gasket of a common comb-tooth-shaped structure, the sealing gasket body and the duct piece groove have larger adhering area, so that the adhesive firmness is improved, and the sealing gasket body is prevented from being separated from the duct piece groove.
Further, a plurality of first through holes are formed in one side, close to the first end face, of the sealing gasket body, a plurality of second through holes are formed in one side, close to the second end face, of the sealing gasket body, the first through holes and the second through holes extend in the length direction of the sealing gasket body, and the first through holes and the second through holes are staggered in the width direction of the sealing gasket body.
According to the compression type sealing method, the compression type sealing principle is adopted, when the sealing gasket bodies are in an extrusion state, internal stress is generated through deformation of the grid-shaped hole structures in the sealing gasket bodies, compression between two adjacent sealing gasket bodies is achieved, and sealing and water stopping effects are achieved; the first through holes and the second through holes are staggered, so that rebound internal stress generated when the sealing gasket body is extruded is more uniform, and the sealing water stopping effect of the sealing gasket body is improved.
Further, the cross section of the first through hole is triangular, and the cross section of the second through hole is inverted triangular. Under the same compression quantity, the compressive loading force of the triangular hole is smaller than that of the circular hole, so that the contact stress generated when the sealing gasket body is extruded can be properly reduced, and the tensile deformation of the sealing gasket body caused by friction is further reduced.
Further, the triangle and the inverted triangle are both equilateral triangles, which facilitates uniform dispersion of stress inside the gasket body.
Further, the corners of the equilateral triangle are rounded, which facilitates uniform dispersion of stress inside the gasket body.
In summary, the present application includes at least one of the following beneficial technical effects:
1. in the longitudinal joint connection process of the socket joint pipe pieces, two adjacent pipe pieces slide relatively along the extending direction of the longitudinal joint, and the drag reduction layer is beneficial to reducing sliding friction force between two adjacent sealing gasket bodies, so that the tensile deformation of the sealing gasket bodies caused by friction is reduced;
2. the tensile piece penetrating through the sealing gasket body is beneficial to limiting the stretching deformation of the sealing gasket body, so that the problem that the sealing gasket body is easy to break out of the duct piece groove due to the stretching deformation is solved;
3. when sealed pad body bonds in the section of jurisdiction recess, first terminal surface laminating in the diapire of section of jurisdiction recess, and the third terminal surface laminating is in the lateral wall of section of jurisdiction recess, compares in the sealed pad of common "broach" structure, and sealed pad body is bigger with the bonding area of section of jurisdiction recess inner wall in this application, helps increasing the fastness of bonding, helps avoiding sealed pad body to deviate from the condition of deviating from in the section of jurisdiction recess.
Drawings
FIG. 1 is a schematic overall structure of an embodiment of the present application;
fig. 2 is a schematic cross-sectional view of a segment slit connection in an embodiment of the present application.
Reference numerals: 1. a gasket body; 2. a first end face; 3. a second end face; 4. a third end face; 5. a tensile member; 6. a drag reduction layer; 7. a first through hole; 8. a second through hole; 9. duct piece groove.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-2.
The embodiment of the application discloses a compression type sealing gasket suitable for a joint of a socket joint type joint segment. Referring to fig. 1 and 2, a compression type gasket suitable for a joint of a pipe segment of a socket joint includes a gasket body 1, a tensile member 5, and a drag reducing layer 6. The sealing gasket body 1 is provided with a first end face 2 attached to the bottom wall of the duct piece groove 9 and a second end face 3 arranged opposite to the first end face 2. The sealing gasket body 1 is provided with a third end face 4 respectively at two sides of the width direction of the first end face 2, and the third end face 4 is attached to the side wall of the duct piece groove 9.
Referring to fig. 1, a tensile member 5 is penetratingly provided in the gasket body 1 along a length direction of the gasket body 1 for limiting tensile deformation of the gasket. The drag reduction layer 6 is disposed on the second end surface 3 for reducing sliding friction between two adjacent gaskets.
When the sealing gasket body 1 is installed, firstly, an adhesive is coated in the first end face 2, the third end face 4 and the duct piece groove 9, and then the sealing gasket body 1 is adhered in the duct piece groove 9; at this time, first terminal surface 2 laminating is in the diapire of duct piece recess 9, and third terminal surface 4 laminating is in the lateral wall of duct piece recess 9, compares in the sealed pad of ordinary "broach" structure, and sealed pad body 1 is bigger with the bonding area of duct piece recess 9 inner wall in this application, helps improving the fastness of bonding to help avoiding sealed pad body 1 to deviate from the condition of duct piece recess 9.
The second end face 3 is a contact surface between the two sealing gasket bodies 1, and in order to facilitate the installation of the sealing gasket bodies 1 in the duct piece groove 9, the width of the second end face 3 is not excessively large, and the width of the second end face 3 is smaller than that of the first end face 2. Simultaneously, duct piece recess 9 is flaring form, and two third terminal surfaces 4 open to both sides respectively, also are convenient for install sealed pad body 1 in duct piece recess 9.
In the longitudinal joint connection process of the socket joint pipe pieces, two adjacent pipe pieces slide relatively along the extending direction of the longitudinal joint, and the drag reduction layer 6 is beneficial to reducing sliding friction force between two adjacent sealing gasket bodies 1, so that the tensile deformation of the sealing gasket bodies 1 caused by friction is reduced; meanwhile, the tensile member 5 penetrating through the sealing gasket body 1 helps to limit the stretching deformation of the sealing gasket body 1, and the problem that the sealing gasket body 1 is easy to separate from the duct piece groove 9 due to the stretching deformation is solved.
Referring to fig. 1, the tension members 5 are provided in plurality, and the tension members 5 are sequentially arranged at intervals in the width direction of the gasket body 1. The cross section of the tensile member 5 is circular, and the diameter of the cross section is 0.3-1 mm. The tensile member 5 is made of a high elastic modulus material, and may be one or more of steel wires, carbon fibers, and aramid fibers. The sealing gasket body 1 is made of ethylene propylene diene monomer rubber.
Because the elastic modulus of the tensile members 5 is greater than that of the gasket body 1, when the gasket body 1 stretches under the action of external force, the tensile members 5 support the gasket body 1 together, which is helpful for improving the deformation resistance of the gasket body 1.
The drag reduction layer 6 is an organosilicon modified acrylic acid layer, and the organosilicon modified acrylic acid is attached to the second end face 3 in a coating manner. When the second end surfaces 3 of the two sealing gasket bodies 1 are abutted against each other and relatively slide, the friction reducing layer 6 is helpful to reduce friction force between the two adjacent sealing gasket bodies 1, so that tensile deformation of the sealing gasket caused by mutual friction is reduced.
In order to realize the water-stop sealing of the longitudinal joint of the duct piece, referring to fig. 1, a plurality of first through holes 7 are formed in one side of the sealing gasket body 1, which is close to the first end face 2, and the plurality of first through holes 7 are distributed at equal intervals in sequence along the width direction of the sealing gasket body 1. The tensile member 5 is located between two adjacent first through holes 7.
Further, referring to fig. 1, a plurality of second through holes 8 are provided on a side of the gasket body 1 adjacent to the second end face 3, and the plurality of second through holes 8 are sequentially distributed at equal intervals along the width direction of the gasket body 1. The first through hole 7 and the second through hole 8 each extend in the longitudinal direction of the gasket body 1. The first through holes 7 and the second through holes 8 are staggered along the width direction of the gasket body 1, and the wall thickness between the adjacent first through holes 7 and second through holes 8 is 1.5-3 mm.
Referring to fig. 1, the number of first through holes 7 is greater than the number of second through holes 8, and in this embodiment, the number of first through holes 7 is four and the number of second through holes 8 is three.
The application adopts the principle of compression type sealing, when the sealing gasket body 1 is in an extrusion state, internal stress is generated through the deformation of the grid-shaped hole structure in the sealing gasket body 1, the compression between two adjacent sealing gasket bodies 1 is realized, and the sealing water stopping effect is achieved. The first through holes 7 and the second through holes 8 are arranged in a staggered manner, so that rebound internal stress generated when the sealing gasket body 1 is extruded is more uniform, and the sealing water stopping effect of the sealing gasket body 1 is improved.
Referring to fig. 1, the cross section of the first through hole 7 is triangular, and the cross section of the second through hole 8 is inverted triangular. Under the condition that the compression amount is the same, the compression load force of the triangular hole is smaller than that of the circular hole, so that the contact stress generated when the sealing gasket body 1 is extruded can be properly reduced, and further the tensile deformation of the sealing gasket body 1 caused by friction is reduced.
Further, referring to fig. 1, the cross sections of the first through hole 7 and the second through hole 8 are equilateral triangles, and the corners of the equilateral triangles are rounded, so that the uniform dispersion of the stress inside the gasket body 1 is facilitated, and the sealing water stop effect of the gasket body 1 is improved.
The implementation principle of the compression type sealing gasket suitable for the joint of the socket joint pipe piece is as follows: before connecting the duct piece, the sealing gasket body 1 is fixed in the duct piece groove 9 in an adhesive mode; in the longitudinal joint connection process of the socket joint pipe pieces, two adjacent pipe pieces slide relatively along the extending direction of the longitudinal joint, the drag reduction layer 6 is beneficial to reducing the sliding friction force between two adjacent sealing gasket bodies 1, and meanwhile, the tensile piece 5 is beneficial to limiting the stretching deformation of the sealing gasket bodies 1, so that the problem that the sealing gasket bodies 1 are easy to break out from pipe piece grooves 9 due to the stretching deformation is solved; after the pipe piece longitudinal joint connection is completed, two adjacent sealing gasket bodies 1 are in an extrusion state, internal stress is generated through deformation of the grid-shaped hole structures in the sealing gasket bodies 1, compression between the two adjacent sealing gasket bodies 1 is achieved, and sealing water stopping effect is achieved.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (9)
1. Compression type sealing gasket suitable for socket joint formula joint section of jurisdiction seam, its characterized in that: comprising the following steps:
the sealing gasket body is provided with a first end face attached to the bottom wall of the duct piece groove and a second end face arranged opposite to the first end face;
the tensile piece is arranged in the sealing gasket body in a penetrating manner along the length direction of the sealing gasket body and used for limiting the tensile deformation of the sealing gasket;
and the drag reduction layer is arranged on the second end face and used for reducing sliding friction force between two adjacent sealing gaskets.
2. A compression gasket for use in a socket joint segment joint as defined in claim 1, wherein: the tensile pieces are arranged in a plurality, and the tensile pieces are sequentially distributed at intervals along the width direction of the sealing gasket body.
3. A compression gasket adapted for use in a socket joint segment joint as set forth in claim 2, wherein: the tensile member is selected from one or more of steel wires, carbon fibers and aramid fibers.
4. A compression gasket for use in a socket joint segment joint as defined in claim 1, wherein: the drag reduction layer is an organosilicon modified acrylic acid layer.
5. A compression gasket for use in a socket joint segment joint as defined in claim 1, wherein: the sealing gasket body is provided with third end faces on two sides of the width direction of the first end faces respectively, and the third end faces are attached to the side walls of the duct piece grooves.
6. A compression gasket for use in a socket joint segment joint as defined in claim 1, wherein: the sealing gasket comprises a sealing gasket body, a plurality of first through holes are formed in one side, close to the first end face, of the sealing gasket body, a plurality of second through holes are formed in one side, close to the second end face, of the sealing gasket body, the first through holes and the second through holes extend along the length direction of the sealing gasket body, and the first through holes and the second through holes are arranged in a staggered mode along the width direction of the sealing gasket body.
7. A compression gasket for use in a socket joint segment joint as defined in claim 6, wherein: the cross section of the first through hole is triangular, and the cross section of the second through hole is inverted triangular.
8. A compression gasket for use in a socket joint segment joint as defined in claim 7, wherein: the triangle and the inverted triangle are equilateral triangles.
9. A compression gasket for use in a socket joint segment joint as defined in claim 8, wherein: the corners of the equilateral triangle are all round corners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321977017.3U CN220353876U (en) | 2023-07-24 | 2023-07-24 | Compression type sealing gasket suitable for socket joint type joint segment joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321977017.3U CN220353876U (en) | 2023-07-24 | 2023-07-24 | Compression type sealing gasket suitable for socket joint type joint segment joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220353876U true CN220353876U (en) | 2024-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321977017.3U Active CN220353876U (en) | 2023-07-24 | 2023-07-24 | Compression type sealing gasket suitable for socket joint type joint segment joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220353876U (en) |
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2023
- 2023-07-24 CN CN202321977017.3U patent/CN220353876U/en active Active
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