CN111188625A - Shield constructs and receives portal elastic sealing device - Google Patents

Shield constructs and receives portal elastic sealing device Download PDF

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Publication number
CN111188625A
CN111188625A CN202010233878.5A CN202010233878A CN111188625A CN 111188625 A CN111188625 A CN 111188625A CN 202010233878 A CN202010233878 A CN 202010233878A CN 111188625 A CN111188625 A CN 111188625A
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CN
China
Prior art keywords
elastic
elastic rubber
edge
steel
steel sheet
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Pending
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CN202010233878.5A
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Chinese (zh)
Inventor
张东山
王家玉
杨玢
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No 1 Engineering Co Ltd of CCCC First Highway Engineering Co Ltd
Original Assignee
No 1 Engineering Co Ltd of CCCC First Highway Engineering Co Ltd
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.)
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Application filed by No 1 Engineering Co Ltd of CCCC First Highway Engineering Co Ltd filed Critical No 1 Engineering Co Ltd of CCCC First Highway Engineering Co Ltd
Priority to CN202010233878.5A priority Critical patent/CN111188625A/en
Publication of CN111188625A publication Critical patent/CN111188625A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/0635—Tail sealing means, e.g. used as end shuttering
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
    • E21D11/383—Waterproofing; Heat insulating; Soundproofing; Electric insulating by applying waterproof flexible sheets; Means for fixing the sheets to the tunnel or cavity wall
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings

Abstract

The invention belongs to an elastic sealing device for a shield receiving tunnel portal, which comprises an arc pressing plate, a stud bolt, a nut and a gasket. The elastic rubber tile is used for sealing a gap formed between the opening door ring and the shield machine shell, two side edges of the elastic rubber tiles are connected in series side by side to form a gap formed between the annular opening door ring and the shield machine shell, the elastic rubber tiles are arc-shaped, an elastic steel plate frame capable of enabling the elastic rubber tiles to be bent under pressure and restored is arranged in the middle of the elastic rubber tiles, and the elastic steel plate frame forms a supporting framework of the elastic rubber tiles. The edge sealing structure is used for sealing a gap formed between two adjacent elastic rubber tiles. The invention can independently and elastically seal the gap between the tunnel portal ring and the shield casing by using the elastic rubber tiles, and has the advantages of simple structure, reasonable design, good sealing property, convenient installation and good use effect.

Description

Shield constructs and receives portal elastic sealing device
Technical Field
The invention belongs to an elastic sealing device for a shield receiving tunnel portal.
Background
In the starting process of the shield machine, in order to prevent muddy water from entering a large amount of shield machine working wells from a building gap formed by the portal ring and the shield machine shell in a ring shape, a receiving portal sealing device with good performance is required to be arranged at the portal ring before the starting of the shield machine.
As shown in fig. 1, the conventional receiving hole door sealing device is composed of a curtain cloth rubber plate 2, an arc pressing plate 3, a folding pressing plate 13, a stud bolt 6, a nut 5 and a gasket 4. The method comprises the steps of pre-embedding a steel ring plate 11 of an opening on the outer side surface and the lower end surface of a door ring 12, then arranging the inner ends of a plurality of double-headed bolts on the outer edge of the door ring at intervals, arranging through holes corresponding to the double-headed bolts on the upper portion of a circular cord fabric rubber plate, sleeving the upper portion of the cord fabric rubber plate on the corresponding double-headed bolts through the through holes, sequentially arranging an arc pressing plate, the upper portion of a folding pressing plate, a gasket and nuts on the double-headed bolts on the outer side of the cord fabric rubber plate, and screwing the nuts to fix the arc pressing plate, the upper portion of the folding pressing plate and the upper portion of.
The inner diameter edge of the cord fabric rubber plate extends towards the axial center of the hole door ring, namely the inner diameter of the cord fabric rubber plate is smaller than the inner diameter of the hole door ring, and the inner diameter edge of the cord fabric rubber plate extending into the hole door ring is pressed against by the folding pressing plate. The folding pressing plate is composed of a fixing plate at the upper part and a pressing plate hinged at the lower part. Obviously, the pressing plate on the folding pressing plate presses the outer side surface of the curtain cloth rubber plate by the weight of the pressing plate, so that the inner side surface of the curtain cloth rubber plate is attached to the outer wall of the shield machine for water prevention.
The bending direction of the pressing plate on the folding pressing plate is consistent with the propelling direction of the shield tunneling machine 1. Because the outer side of the hole door ring is in a vertical state, the pressing plate on the folding pressing plate positioned at the upper part of the outer side of the hole door ring can be used for pressing the outer side surface of the curtain cloth rubber plate under the action of gravity; however, the pressing plates on the folding pressing plates positioned at the two sides and the lower part of the hole door ring naturally turn outwards and out of the lower end of the hole door ring, and cannot press the outer side surface of the curtain cloth rubber plate.
When the shield machine arrives, the sealing bending direction of the curtain cloth rubber plate is consistent with the shield advancing direction, and the surface of the shield machine shell is not absolutely flat, the curtain cloth rubber plate lapped on the shield machine shell cannot be in seamless lapping joint with the shield machine shell, and the pressing plate on the folding pressing plate cannot be used for pressing the curtain cloth rubber plate to the two sides and the lower part, so that the curtain cloth rubber plate cannot be completely and tightly jointed and sealed with the shield machine shell, the water burst of a tunnel portal cannot be completely sealed, once the leakage of substances such as water or sand occurs, particularly under the geological condition that soft soil is rich in water, the serious accidents such as water burst and sand burst of the tunnel portal, collapse of the ground at the end, collapse and even collapse of peripheral buildings, burying of the shield, collapse of a tunnel and the like are.
Disclosure of Invention
The invention aims to design an elastic sealing device for a shield receiving portal, which can automatically and elastically seal a gap between a portal ring and a shield shell by using an elastic rubber tile and has the advantages of simple structure, reasonable design, good sealing property, convenience in installation and good using effect.
Therefore, the elastic sealing device for the shield receiving tunnel portal comprises an arc pressing plate, a stud bolt, a nut and a gasket, wherein:
an elastic rubber tile: the shield machine is used for sealing a gap formed between the tunnel door ring and the shield machine shell. Two side edges of a plurality of elastic rubber tiles are connected in series side by side to form a gap between an annular closed tunnel door ring and the shield machine shell. The elastic rubber tile is arc-shaped. The middle part of the elastic rubber tile is provided with an elastic steel plate frame which can enable the elastic rubber tile to bend and recover under pressure. The elastic steel plate frame forms a supporting framework of the elastic rubber tile. The two side faces and the periphery of the elastic steel plate frame are wrapped with rubber layers with inner wear-resistant tensile nylon cloth layers, or the inner side face of the elastic steel plate frame is provided with rubber layers with inner wear-resistant tensile nylon cloth layers. Bolt holes are formed in the upper end edge portion of the elastic rubber tile and the upper edge steel sheet plate of the elastic steel plate frame corresponding to the embedded stud bolts. The two side edges of the elastic rubber tile are provided with a plurality of edge bolts at intervals in the radial direction. The lower ends of the side bolts are fixed with the bent elastic steel sheet plates corresponding to the two side edges of the elastic steel sheet frame into a whole, and the upper ends of the side bolts are positioned outside the two sides of the outer side surface of the corresponding elastic rubber tile. Edge sealing structures are arranged between the edge bolts of the two adjacent elastic rubber tiles. The upper end part of the elastic rubber tile is sleeved on the stud bolt of the pre-buried hole door steel ring plate through the bolt hole. The stud on the outside of the elastic rubber tile is sequentially provided with an arc pressing plate, a gasket and a nut. The elastic rubber tile is fixed on the outer side edge of the steel ring plate of the pre-buried tunnel door through the arc pressing plate, the gasket and the nut.
Banding structure: used for closing the gap formed between two adjacent elastic rubber tiles. Two sides of the waterproof nylon cloth which is provided with longitudinal wrinkles and can stretch out and draw back transversely are provided with steel edge pieces. The steel side plate is provided with through holes corresponding to the bolts at the edge of the elastic rubber tile. The two steel side pieces are respectively positioned on the bolt at the edge part between the two adjacent elastic rubber tiles and are connected with the edge part of the outer side surface of the two adjacent elastic rubber tiles into a whole through the fixed gasket and the fixed nut. The waterproof nylon cloth covers and seals the gap between the two elastic rubber tiles.
The double-ended bolt of pre-buried portal steel ring board on evenly arrange 30 elastic rubber tile, the equipartition is for arranging an elastic rubber tile for every 12, the width of elastic rubber tile is 700 ~ 800mm, thickness is 30 ~ 60mm, the total arc length of the middle part line of each elastic rubber tile and the outer footpath adaptation of shield machine.
The elastic rubber tile is flat or arc with lower part tilted outwards.
The elastic steel plate frame comprises an upper steel sheet plate, a lower elastic steel sheet plate and a lower steel sheet plate, wherein the upper steel sheet plate is positioned on the upper part of the elastic steel plate frame, the lower steel sheet plate is positioned at the lower end of the elastic steel plate frame, the lower elastic steel sheet plate is in a long strip shape, a plurality of the lower elastic steel sheet plates are positioned between the upper and lower steel sheet plates at intervals, and the upper and lower ends of the lower elastic steel sheet plates are respectively fixed with the corresponding upper and lower steel sheet plates into a whole.
The thickness of the steel sheet of the elastic steel plate frame is 2-6 mm, and the elastic steel plate frame is made of spring steel.
The thickness of the steel sheet plate at the upper edge of the elastic steel sheet frame can be larger than that of the bent elastic steel sheet plate.
The inner side surface of the elastic rubber tile is annularly provided with a plurality of semicircular convex columns at intervals, and the inner diameter edge of the elastic rubber tile is a convex edge.
Rubber layers are compounded on two side faces of the elastic steel plate frame, a wear-resistant tensile nylon cloth layer is arranged on the outer side of each rubber layer, and a rubber layer is compounded on the outer side of each wear-resistant tensile nylon cloth layer; or the inner side surface of the elastic steel plate frame is compounded with a rubber layer, the outer side of the rubber layer is provided with a wear-resistant tensile nylon cloth layer, and the outer side of the wear-resistant tensile nylon cloth layer is compounded with a rubber layer.
The edge sealing structures are positioned on two side edges of the outer side surfaces of the adjacent elastic rubber tiles, and the upper ends of the edge sealing structures are positioned in the lower end edge of the arc pressing plate.
The thickness of the steel sheet of the steel side sheet is 2-3 mm, and the steel side sheet is made of spring steel.
The above structure achieves the object of the present invention.
The invention can independently and elastically seal the gap between the tunnel portal ring and the shield casing by using the elastic rubber tiles, and has the advantages of simple structure, reasonable design, good sealing property, convenient installation and good use effect.
Compared with the prior art, the invention has the following advantages and positive effects:
(1) the invention uses the elastic rubber tile to automatically and elastically seal the gap between the tunnel portal ring and the shield casing, and has good sealing property. The elastic rubber tile can automatically and automatically stretch out and draw back according to the change of the shape of the shield machine shell, so that the elastic rubber tile is tightly attached to the shield machine shell to complete sealing. Compared with the traditional cord fabric rubber plate and a folding pressing plate, the sealing device is free from the limitation of gravity and position and has good sealing property.
(2) According to the invention, the elastic rubber tiles and the edge sealing structure are used for carrying out uniform elastic symmetrical sealing on a building gap formed by the opening door ring and the shield machine shell. When the shield machine shell body changes, each elastic rubber tile can also change along with the change under the action of the elastic steel plate frame in the elastic rubber tile, so that each elastic rubber tile is tightly attached to the shield machine shell to form a blocking structure, soil particles and muddy water can be completely prevented from entering a tunnel portal sealing cavity, the construction cost is lower, and the economical efficiency is better.
(3) The invention has simple structure, the elastic rubber tile replaces the traditional cord fabric rubber plate and the folding pressing plate, the used elements are greatly reduced compared with the traditional structure, and the invention has the advantages of light weight, low cost, reliable working performance, flexible and labor-saving operation, suitable construction and use, convenient popularization and the like.
Drawings
Fig. 1 is a schematic view of a receiving tunnel portal sealing structure of a conventional shield tunneling machine during tunnel exit.
Fig. 2 is a schematic structural view of the elastic rubber tile of the present invention.
Fig. 3 is a schematic structural view of an elastic steel plate frame in the elastic rubber shoe of the present invention.
Fig. 4 is a schematic view of the cross-sectional structure a-a in fig. 2.
FIG. 5 is a schematic structural view of another embodiment of the section A-A in FIG. 2.
Fig. 6 is a schematic structural diagram of the edge sealing structure for closing the gap between two adjacent elastic rubber tiles.
Fig. 7 is a schematic view of the cross-sectional structure B-B in fig. 6.
FIG. 8 is a schematic structural view of an elastic sealing device when the shield tunneling machine of the present invention is out of the tunnel.
Detailed Description
Fig. 1 is a schematic view of a receiving portal sealing structure of a conventional shield tunneling machine during exit, which has been described in the background art and will not be described again.
As shown in fig. 2 to 7, a shield constructs and receives portal elastic sealing device, includes portal circle 12, pre-buried portal steel ring board 11, circular arc clamp plate 3, stud 6, nut 5 and gasket 4, wherein:
elastic rubber tile 7: the shield machine is used for sealing a gap formed between the tunnel door ring and the shield machine shell. Two side edges of a plurality of elastic rubber tiles are connected in series side by side to form a gap between an annular closed tunnel door ring and the shield machine shell. The elastic rubber tile is arc-shaped. The middle part of the elastic rubber tile is provided with an elastic steel plate frame which can enable the elastic rubber tile to bend and recover under pressure. The elastic steel plate frame forms a supporting framework of the elastic rubber tile. The elastic steel plate frame is composed of an upper edge steel sheet plate 73, a bent elastic steel sheet plate 74 and a lower edge steel sheet plate 75, the upper edge steel sheet plate is positioned at the upper part of the elastic steel plate frame, and the lower edge steel sheet plate is positioned at the lower end of the elastic steel plate frame. The bending elastic steel sheet plates are in a strip shape, the bending elastic steel sheet plates are located between the upper edge steel sheet plate and the lower edge steel sheet plate at intervals, and the upper end and the lower end of each bending elastic steel sheet plate are respectively fixed with the corresponding upper edge steel sheet plate and the corresponding lower edge steel sheet plate into a whole through welding. The two side faces and the periphery of the elastic steel plate frame are covered with rubber layers 76 with inner wear-resistant tensile nylon cloth layers 77, or the inner side face of the elastic steel plate frame is provided with rubber layers with inner wear-resistant tensile nylon cloth layers.
The thickness of the steel sheet of the elastic steel plate frame is 2-6 mm, and the elastic steel plate frame is made of spring steel. The thickness of the steel sheet plate at the upper edge of the elastic steel sheet frame can be larger than that of the bent elastic steel sheet plate. The upper edge steel sheet plate of the elastic steel plate frame is used for bearing the elastic rubber tiles on the stud bolts and supporting the upper end of the bent elastic steel sheet plate. The bent elastic steel sheet plate is used for pressing and bending the elastic rubber tile and enabling the elastic rubber tile to be tightly attached to the shield machine shell. The lower steel sheet plate is positioned in the inner arc edge part of the elastic rubber tile and used for uniformly pressing the bent elastic steel sheet plates, so that the lower part of the inner side surface of the elastic rubber tile is attached and sealed with the shield machine shell.
The elastic rubber tile is flat or arc with the lower part tilted towards the outer side, so that the elastic rubber tile inclines towards the advancing direction of the shield machine after the inner side surface of each elastic rubber tile is pressed by the shield machine shell, and the lower part of the inner side surface of each elastic rubber tile is attached and sealed with the shield machine shell.
Bolt holes 71 are arranged on the upper end edge part of the elastic rubber tile and the upper edge steel sheet plate 73 of the elastic steel plate frame corresponding to the pre-embedded stud bolts 6. The two side edges of the elastic rubber tile are provided with a plurality of edge bolts 72 at intervals in the radial direction. The lower ends of the side bolts are fixed with the bent elastic steel sheet plates 74 corresponding to the two sides of the elastic steel sheet frame into a whole, and the upper ends of the side bolts are positioned outside the two sides of the outer side surface of the corresponding elastic rubber tile.
And a sealing edge structure 8 is arranged between the bolt at the edge part of two adjacent elastic rubber tiles. The upper end part of the elastic rubber tile is sleeved on the stud bolt of the pre-buried hole door steel ring plate through the bolt hole. The stud on the outside of the elastic rubber tile is sequentially provided with an arc pressing plate, a gasket and a nut. The elastic rubber tile is fixed on the outer side edge of the steel ring plate of the pre-buried tunnel door through the arc pressing plate, the gasket and the nut.
The double-ended bolt of pre-buried portal steel ring board on evenly arrange 30 elastic rubber tile, the equipartition is for arranging an elastic rubber tile for every 12, the width of elastic rubber tile is 700 ~ 800mm, thickness is 30 ~ 60mm, the total arc length of the middle part line of each elastic rubber tile and the outer footpath adaptation of shield machine.
The inner side surface of the elastic rubber tile is annularly provided with a plurality of semicircular convex columns 78 at intervals, and the inner diameter edge of the elastic rubber tile is a convex edge so as to facilitate the closer fitting and sealing of the inner side surface of the elastic rubber tile and the shield machine shell.
Rubber layers 76 are compounded on two side faces of the elastic steel plate frame, a wear-resistant tensile nylon cloth layer 77 is arranged on the outer side of each rubber layer, and the rubber layers are compounded on the outer sides of the wear-resistant tensile nylon cloth layers; or the inner side surface of the elastic steel plate frame is compounded with a rubber layer, the outer side of the rubber layer is provided with a wear-resistant tensile nylon cloth layer, and the outer side of the wear-resistant tensile nylon cloth layer is compounded with a rubber layer. The rubber used by the rubber layer is the same as that of the traditional cord fabric rubber plate.
The edge sealing structure 8: the rubber sealing device is used for sealing a gap formed between two adjacent elastic rubber tiles, namely the gap formed between the side edges of the two adjacent elastic rubber tiles. Two sides of the waterproof nylon cloth 83 which is provided with longitudinal wrinkles and can stretch transversely are provided with steel edge pieces 81. The steel side plate is provided with through holes corresponding to the bolts at the edge of the elastic rubber tile. The two steel side pieces are respectively positioned on the bolt at the edge part between the two adjacent elastic rubber tiles and are connected with the edge parts of the outer side surfaces of the two adjacent elastic rubber tiles into a whole through the fixed gasket 84 and the fixed nut 82. The waterproof nylon cloth covers and seals the gap between the two elastic rubber tiles.
The edge sealing structures are positioned on two side edges of the outer side surfaces of the adjacent elastic rubber tiles, and the upper ends of the edge sealing structures are positioned in the lower end edge of the arc pressing plate.
The steel sheet thickness of steel side piece be 2 ~ 3mm, make with the spring steel to conveniently cooperate the curved elastic steel sheet board atress to buckle.
As shown in figure 8, when in use, the elastic rubber tiles are hung on the portal steel ring plate one by one through embedded stud bolts. 30 elastic rubber tiles are uniformly distributed on the stud bolts of the pre-buried tunnel portal steel ring plate, and each elastic rubber tile is uniformly distributed at every 12 degrees. And a sealing edge structure is arranged at a gap formed between the outer side surfaces of two adjacent elastic rubber tiles, namely two steel edge pieces are respectively arranged on edge bolts between the two adjacent elastic rubber tiles and are connected with the edges of the outer side surfaces of the two adjacent elastic rubber tiles into a whole through a fixing gasket 84 and a fixing nut 82, and a waterproof nylon cloth cover is used for sealing the gap between the two elastic rubber tiles. Arc pressing plates are installed in blocks, the upper parts of the elastic rubber tiles are fixedly pressed on the embedded stud bolts of the annular steel plate through gaskets 4 and nuts 5, and the elastic rubber tiles are fixedly pressed on the annular steel plate. When a shield body of the shield machine arrives at a tunnel portal, the tunnel portal is broken firstly, a curtain cloth rubber plate needs to be protected from being damaged in the tunnel portal breaking process, the tunnel portal is broken completely, after dregs are cleaned up, when the shield machine enters an external tunnel portal ring, the bending direction of each elastic rubber tile is consistent with the propelling direction of the shield machine 1, after the inner side surface of each elastic rubber tile is jacked by a shield machine shell, each elastic rubber tile and a sealing edge structure are inclined towards the advancing direction of the shield machine synchronously, the lower part of the inner side surface of each elastic rubber tile is attached to and sealed with the shield machine shell, and the sealing edge structure seals a gap formed between the outer side surfaces of two adjacent elastic rubber tiles.
When the shield tail of the shield tunneling machine is pulled out of the tunnel portal and the elastic rubber tiles fall onto the pipe sheet, the elastic rubber tiles are completely and automatically pressed on the pipe sheet under the action of the elastic steel plate frame, so that the sealing effect of the tunnel portal is ensured, and the tunnel portal collapse caused by water and soil loss is prevented.
In a word, the invention can use the elastic rubber tile to seal the gap between the tunnel portal ring and the shield casing independently and elastically, and has the advantages of simple structure, reasonable design, good sealing performance, convenient installation and good use effect.

Claims (10)

1. The utility model provides a shield constructs and receives portal elastic sealing device, includes circular arc clamp plate, stud, nut and gasket, its characterized in that:
an elastic rubber tile: the shield machine is used for sealing a gap formed between a hole door ring and a shield machine shell, two side edges of a plurality of elastic rubber tiles are connected in series side by side to form a gap formed between an annular closed hole door ring and the shield machine shell, each elastic rubber tile is arc-shaped, the middle part of each elastic rubber tile is provided with an elastic steel plate frame which can enable the elastic rubber tiles to be bent and restored under pressure, each elastic steel plate frame forms a supporting framework of the elastic rubber tile, two side surfaces and the periphery of each elastic steel plate frame are wrapped with rubber layers with inner wear-resistant tensile nylon cloth layers, or the inner side surface of each elastic steel plate frame is provided with the rubber layers with the inner wear-resistant tensile nylon cloth layers, bolt holes are arranged on the upper end edge part of each elastic rubber tile and the upper edge steel plate of each elastic steel plate frame corresponding to pre-embedded stud bolts, a plurality of edge part bolts are arranged on two side edges of each elastic rubber tile, the upper ends of the edge bolts are positioned outside two edges of the outer side surface of the corresponding elastic rubber tile, an edge sealing structure is arranged between the edge bolts of two adjacent elastic rubber tiles, the edge part of the upper end of each elastic rubber tile is sleeved on the stud bolt of the steel ring plate of the pre-buried hole door through the bolt hole, the stud bolt outside each elastic rubber tile is sequentially provided with an arc pressing plate, a gasket and a nut, and each elastic rubber tile is fixed on the outer side edge of the steel ring plate of the pre-buried hole door through the arc pressing plate, the gasket and the nut;
banding structure: the waterproof nylon cloth is used for sealing a gap formed between two adjacent elastic rubber tiles, steel edge pieces are arranged on two side edges of the waterproof nylon cloth which is longitudinally folded and can transversely stretch, through holes are formed in the steel edge pieces corresponding to bolts at the edge parts of the elastic rubber tiles, the two steel edge pieces are respectively positioned on the bolts at the edge parts between the two adjacent elastic rubber tiles and are connected with the outer side edge parts of the two adjacent elastic rubber tiles into a whole through fixing gaskets and fixing nuts, and the waterproof nylon cloth covers and seals the gap between the two elastic rubber tiles.
2. The shield receiving tunnel portal elastic sealing device according to claim 1, characterized in that: the double-ended bolt of pre-buried portal steel ring board on evenly arrange 30 elastic rubber tile, the equipartition is for arranging an elastic rubber tile for every 12, the width of elastic rubber tile is 700 ~ 800mm, thickness is 30 ~ 60mm, the total arc length of the middle part line of each elastic rubber tile and the outer footpath adaptation of shield machine.
3. The shield receiving tunnel portal elastic sealing device according to claim 1, characterized in that: the elastic rubber tile is flat or arc with lower part tilted outwards.
4. The shield receiving tunnel portal elastic sealing device according to claim 1, characterized in that: the elastic steel plate frame comprises an upper steel sheet plate, a lower elastic steel sheet plate and a lower steel sheet plate, wherein the upper steel sheet plate is positioned on the upper part of the elastic steel plate frame, the lower steel sheet plate is positioned at the lower end of the elastic steel plate frame, the lower elastic steel sheet plate is in a long strip shape, a plurality of the lower elastic steel sheet plates are positioned between the upper and lower steel sheet plates at intervals, and the upper and lower ends of the lower elastic steel sheet plates are respectively fixed with the corresponding upper and lower steel sheet plates into a whole.
5. The shield receiving portal elastic sealing device of claim 1 or 4, wherein: the thickness of the steel sheet of the elastic steel plate frame is 2-6 mm, and the elastic steel plate frame is made of spring steel.
6. The shield receiving portal elastic sealing device of claim 1 or 4, wherein: the thickness of the steel sheet plate at the upper edge of the elastic steel sheet frame can be larger than that of the bent elastic steel sheet plate.
7. The shield receiving tunnel portal elastic sealing device according to claim 1, characterized in that: the inner side surface of the elastic rubber tile is annularly provided with a plurality of semicircular convex columns at intervals, and the inner diameter edge of the elastic rubber tile is a convex edge.
8. The shield receiving tunnel portal elastic sealing device according to claim 1, characterized in that: rubber layers are compounded on two side faces of the elastic steel plate frame, a wear-resistant tensile nylon cloth layer is arranged on the outer side of each rubber layer, and a rubber layer is compounded on the outer side of each wear-resistant tensile nylon cloth layer; or the inner side surface of the elastic steel plate frame is compounded with a rubber layer, the outer side of the rubber layer is provided with a wear-resistant tensile nylon cloth layer, and the outer side of the wear-resistant tensile nylon cloth layer is compounded with a rubber layer.
9. The shield receiving tunnel portal elastic sealing device according to claim 1, characterized in that: the edge sealing structures are positioned on two side edges of the outer side surfaces of the adjacent elastic rubber tiles, and the upper ends of the edge sealing structures are positioned in the lower end edge of the arc pressing plate.
10. The shield receiving tunnel portal elastic sealing device according to claim 1, characterized in that: the thickness of the steel sheet of the steel side sheet is 2-3 mm, and the steel side sheet is made of spring steel.
CN202010233878.5A 2020-03-30 2020-03-30 Shield constructs and receives portal elastic sealing device Pending CN111188625A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010233878.5A CN111188625A (en) 2020-03-30 2020-03-30 Shield constructs and receives portal elastic sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010233878.5A CN111188625A (en) 2020-03-30 2020-03-30 Shield constructs and receives portal elastic sealing device

Publications (1)

Publication Number Publication Date
CN111188625A true CN111188625A (en) 2020-05-22

Family

ID=70705498

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010233878.5A Pending CN111188625A (en) 2020-03-30 2020-03-30 Shield constructs and receives portal elastic sealing device

Country Status (1)

Country Link
CN (1) CN111188625A (en)

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