CN218235117U - Sealing device for starting of slurry shield - Google Patents
Sealing device for starting of slurry shield Download PDFInfo
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- CN218235117U CN218235117U CN202221616305.1U CN202221616305U CN218235117U CN 218235117 U CN218235117 U CN 218235117U CN 202221616305 U CN202221616305 U CN 202221616305U CN 218235117 U CN218235117 U CN 218235117U
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Abstract
The utility model belongs to the technical field of the tunnel shield construction, a sealing device is originated to slurry shield is disclosed, include: one end of the first external door opening is fixed at the outer edge of the slurry shield starting tunnel door; the steel wire sealing brush is arranged at the inner edge of the first external door opening; one end of the second external door opening is fixed at the other end of the first external door opening; the first sealing assembly is connected between the other end of the first external door opening and one end of the second external door opening, and a first sealing cabin is formed between the steel wire sealing brush and the first sealing assembly; the second sealing assembly is fixed at the other end of the first sealing assembly, and a second sealed cabin is formed between the second sealing assembly and the first sealing assembly; and the sealing air bag is arranged in the second sealing cabin, one side of the sealing air bag is fixed on the surface of the inner edge of the second external door opening, and the other side of the sealing air bag is tightly attached to a shield shell of the shield tunneling machine. The sealing device has the advantages of simple structure, convenient operation, reliable sealing and good sealing effect.
Description
Technical Field
The application relates to the technical field of tunnel shield construction, in particular to a sealing device for starting of a slurry shield.
Background
With the increasing shortage of urban land and the gradual increase of urban traffic pressure, the shield construction method is popularized and applied in a large area with the advantages of rapidness, environmental protection, safety, high quality and the like, and becomes a preferred construction method for tunnel construction; the slurry shield has the advantages of good support on the tunnel face, small influence on the ground and the settlement of a building, capability of accurately and quickly controlling the working pressure, convenience in stopping and maintaining pressure, convenience in replacing cutters and the like, and is more suitable for the large-diameter tunnel.
At present, when a slurry shield starts and receives, a double-bin or three-bin external tunnel portal form is usually adopted for slurry building and starting of the slurry shield, and after a cutter head and a front shield of the shield tunneling machine enter a tunnel portal, a gap between the tunnel portal and a shield shell is sealed and reinforced by adopting a shield tail grease injection mode or a phosphoric acid water glass injection mode, so that the problem that slurry building cannot be built or serious slurry leakage is avoided, but shield tail grease injection is slow due to a large gap between the external tunnel portal and the shield shell, and the gap and a slurry leakage point cannot be timely and effectively filled; after being injected, the phosphoric acid water glass is quickly initially solidified and wraps the shield shell; however, when the shield machine starts to be propelled, the phosphate water glass consolidation body can be rapidly broken and loses efficacy, the difficulty and risk of slurry shield starting are increased due to the fact that the slurry pressure cannot be built, the slurry is greatly lost from gaps due to forced pressure building, and the starting end head is collapsed in serious cases.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application aims to provide a slurry shield starting sealing device to solve the technical problem that slurry leakage in a starting slurry building cabin cannot be effectively and quickly sealed when an existing slurry shield is started.
According to an embodiment of the present application, there is provided a slurry shield originating sealing device, including:
one end of the first external door opening is fixed at the outer edge of the slurry shield starting tunnel door;
the steel wire sealing brush is arranged at the inner edge of the first external door opening;
one end of the second external door opening is fixed at the other end of the first external door opening;
the first sealing assembly is connected between the other end of the first external door opening and one end of the second external door opening, and a first sealing cabin is formed between the steel wire sealing brush and the first sealing assembly;
the second sealing assembly is fixed at the other end of the first sealing assembly, and a second sealed cabin is formed between the second sealing assembly and the first sealing assembly; and
and the sealing air bag is arranged in the second sealing cabin, one side of the sealing air bag is fixed on the surface of the inner edge of the second external door opening, and the other side of the sealing air bag is tightly attached to a shield shell of the shield tunneling machine.
Furthermore, a sealing slurry injection hole is formed in the first external door opening and used for injecting sealing slurry into the first sealing cabin.
Further, the first seal assembly includes:
the first curtain plate is arranged between the first external door opening and the second external door opening;
and the first hinge pressing plate is arranged at the end part of the inner side of the second external door opening and is close to one side of the first curtain plate.
Further, the second seal assembly includes:
the second curtain board and the second folding pressing board are sequentially arranged on the end face of the outer side of the second external door opening from inside to outside.
Furthermore, the sealing airbag is of an annular structure, annular protruding strips are arranged on the inner annular surface of the sealing airbag, and the annular protruding strips are uniformly distributed in the middle of the inner annular surface of the sealing airbag in a strip shape.
Furthermore, an inflation through hole is formed in the second external door opening, and the sealing air bag is inflated and deflated through the inflation through hole.
Furthermore, an air bag inflating mechanism is arranged in the inflating through hole, one end of the air bag inflating mechanism is connected with the sealing air bag in a sealing mode, and the other end of the air bag inflating mechanism penetrates through the inflating through hole and then is fixedly connected with the second external door opening.
Furthermore, the air bag inflating mechanism comprises a valve core and a locking nut, an inflating hole is formed in the sealed air bag and is right opposite to the inflating through hole, the valve core is inserted into the inflating through hole, one end of the valve core is connected with the inflating hole in a sealing mode, and the other end of the valve core penetrates through the inflating through hole and is fixedly connected with the second external door opening through the locking nut.
Further, the airbag inflation mechanism further includes:
the air bag gasket is sleeved on the outer side of the valve core and is arranged between the sealing air bag and the second external door opening;
the air bag gland is sleeved on the outer side of the valve core and is arranged between the second external door opening and the locking nut;
and the O-shaped sealing ring is sleeved on the outer side of the valve core and is arranged between the air bag gland and the second external door opening.
Further, the first external door opening and the slurry shield starting door opening are fixed through bolts, the first external door opening, the first sealing assembly and the second external door opening are fixed through bolts, and the second sealing assembly and the second external door opening are fixed through bolts.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
according to the technical scheme, the sealing air bag is combined with the external door opening, when the device is used, the sealing air bag is inflated through the inflating equipment, and air is inflated into the sealing air bag, so that the volume of the sealing air bag is increased, the gap between the shield shell and the external door opening is rapidly filled, and the muddy water is effectively prevented from overflowing; simple structure, convenient operation, it is airtight reliable, sealed effect is better.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic diagram of a slurry shield originating seal arrangement shown in accordance with an exemplary embodiment.
FIG. 2 is a schematic diagram illustrating a sealed bladder configuration according to an exemplary embodiment.
FIG. 3 is an overall schematic view of a sealed airbag connected inflator device shown according to an exemplary embodiment.
FIG. 4 is a schematic diagram of an airbag inflation mechanism shown in accordance with an exemplary embodiment.
In the figure: 1. a side wall; 2. pre-burying a steel ring; 3. a first external door opening; 4. a second external door opening; 5. a steel wire sealing brush; 6. a first curtain plate; 7. a second curtain plate; 8. a first folding pressing plate; 9. a second folding pressing plate; 10. sealing the air bag; 11. an airbag inflation mechanism; 12. a first stud bolt; 13. a second stud bolt; 14. a third stud bolt; 3-1, sealing the slurry injection hole; 10-1, triangular bulges; 10-2, inflating holes; 11-1, a valve core; 11-2, airbag cushion; 11-3, an O-shaped sealing ring; 11-4, pressing a cover by an air bag; 11-5 and locking the nut.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at" \8230; "or" when 8230; \8230; "or" in response to a determination ", depending on the context.
As shown in fig. 1, the present embodiment discloses a slurry shield originating sealing device, which may include: the device comprises a first external door opening 3, a second external door opening 4, a steel wire sealing brush 5, a sealing air bag 10, a first sealing assembly and a second sealing assembly, wherein one end of the first external door opening 3 is fixed on the outer edge of a slurry shield starting tunnel door; the steel wire sealing brush 5 is arranged on the inner edge of the first external door opening 3; one end of the second external door opening 4 is fixed at the other end of the first external door opening 3; the first sealing assembly is connected between the other end of the first external door opening 3 and one end of the second external door opening 4, wherein a first sealed cabin is formed between the steel wire sealing brush 5 and the first sealing assembly; the second sealing assembly is fixed at the other end of the first sealing assembly, and a second sealing cabin is formed between the second sealing assembly and the first sealing assembly; the sealing air bag 10 is arranged in the second sealing cabin, one side of the sealing air bag is fixed on the inner edge surface of the second external door opening 4, and the other side of the sealing air bag is tightly attached to a shield shell of the shield tunneling machine.
According to the technical scheme, the sealing air bag is combined with the external door opening, when the device is used, the sealing air bag is inflated through the inflating equipment, and air is inflated into the sealing air bag, so that the volume of the sealing air bag is increased, the gap between the shield shell and the external door opening is rapidly filled, and the muddy water is effectively prevented from overflowing; simple structure, convenient operation, it is airtight reliable, sealed effect is better.
Referring to fig. 1, a sealing slurry injection hole 3-1 is formed in the first external door opening 3, and the sealing slurry injection hole 3-1 is used for injecting sealing slurry into the first capsule. In the embodiment, the grouting ball valve is arranged in the sealing slurry injection port 3-1, a part of sealing material in the sealing cabin is adhered to the upper surface of the shield shell and is taken away in the process that the shield machine continues to advance, and the sealing material can be supplemented inwards at any time through the sealing slurry injection port 3-1 and the grouting ball valve.
Referring to fig. 1 and 3, the first seal assembly includes a first curtain plate 6 and a first tuck flap 8, the first curtain plate 6 being disposed between the first circumscribing door aperture 3 and the second circumscribing door aperture 4; the first hinge pressing plate 8 is arranged at the end part of the inner side of the second external door opening 4 and is arranged close to one side of the first curtain plate 6, so that a sealed compartment is separated and increased, and the aim of enhancing the sealing property is fulfilled.
Referring to fig. 1 and 3, the second sealing assembly includes a second curtain plate 7 and a second folding pressing plate 9, and the second curtain plate 7 and the second folding pressing plate 9 are sequentially disposed on the outer side end face of the second external door opening 4 from inside to outside, so as to enhance the sealing performance of the whole structure.
Referring to fig. 2, sealed gasbag 10 is cyclic annular structure, be provided with annular protruding strip on the interior anchor ring of sealed gasbag 10, a plurality of annular protruding strips are strip form evenly distributed at the interior anchor ring middle part of sealed gasbag 10, in order to prevent the thing of appearing unevenness on the shield shell, whole gasbag if the place of plane direct contact unevenness can produce great contact gap, influences sealed effect.
Specifically, the annular protrusion strip comprises a plurality of triangular protrusions 10-1, the triangular protrusions 10-1 are uniformly distributed in the middle of the inner annular surface of the sealed air bag 10 in a strip shape, and in order to prevent the occurrence of an uneven part on the shield shell, if the whole air bag is in a place where a plane directly contacts the uneven part, a large contact gap is generated, and the sealing effect is affected.
Referring to fig. 1 and 3, the second external door opening 4 is provided with an inflation through hole through which the airbag 10 is inflated and deflated.
Referring to fig. 1 and 3, an airbag inflating mechanism 11 is arranged in the inflating through hole, one end of the airbag inflating mechanism 11 is connected with the sealed airbag 10 in a sealing manner, and the other end of the airbag inflating mechanism is fixedly connected with the second external door opening 4 after penetrating through the inflating through hole, so that the airbag can be fixed on the external door opening on one hand, and the airbag can be inflated by an external air source on the other hand.
Specifically, the air bag inflating mechanism 11 comprises an air valve core 11-1 and a locking nut 11-5, an inflating hole 10-2 is formed in the sealed air bag 10, the inflating hole 10-2 is arranged right opposite to the inflating through hole, the air valve core 11-1 is inserted into the inflating through hole, one end of the air valve core 11-1 is hermetically connected with the inflating hole 10-2, and the other end of the air valve core 11-1 is fixedly connected with the second external door opening 4 through the locking nut 11-5 after penetrating through the inflating through hole. The sealing airbag is combined with the external door opening, the sealing airbag is fixedly connected with the external door opening through the inflation through hole of the external door opening by using the locking nut, and the sealing performance is better.
Further, the air bag inflating mechanism further comprises an air bag gasket 11-2, an air bag gland 11-4 and an O-shaped sealing ring 11-3, wherein the air bag gasket 11-2 is sleeved on the outer side of the valve core 11-1 and is arranged between the sealing air bag 10 and the second external door opening 4; the air bag gland 11-4 is sleeved on the outer side of the valve core 11-1 and is arranged between the second external door opening 4 and the locking nut 11-5; the O-shaped sealing ring 11-3 is sleeved on the outer side of the valve core 11-1, is arranged between the air bag gland 11-4 and the second external door opening 4, can be connected with an external air source, supplies air to the air bag in time, and prevents the sealing effect from being lost due to pressure reduction.
Referring to fig. 1 and 3, a side wall 1 is arranged at an originating tunnel portal of a slurry shield, and an inner opening of the side wall 1 is provided with an embedded steel ring 2; a first external door opening 3 and a second external door opening 4 are sequentially arranged on the end surface of the outer edge of the side wall 1 from inside to outside; a bolt hole is preset in the embedded steel ring 2, an internal thread sleeve is arranged on the inner side surface of the embedded steel ring 2 and is opposite to the bolt hole, one end of the internal thread sleeve is embedded in the side wall 1, and the other end of the internal thread sleeve is welded and fixed with the embedded steel ring 2; the first external door opening 3 is fixedly connected with the embedded steel ring 2 through a first stud 12, and one end of the first stud 12 penetrates through a bolt hole in the embedded steel ring 2 and is fixedly connected with the internal thread sleeve; the other end of the second stud 12 is fixedly connected with the first external door opening 3 through a nut. All the components are connected by bolts, so that the components are convenient to disassemble, assemble and move; meanwhile, the recycling of the components is realized, and the construction cost is greatly saved.
The slurry shield starting sealing device of the embodiment is characterized in that a first external door opening 3 is installed on an embedded steel ring 2 through a first stud 12, and a steel wire sealing brush 5 is installed on the inner edge of the first external door opening 3; then a first sealing assembly, a second external door opening and a second sealing assembly are sequentially arranged from inside to outside; and finally, fixing the sealing air bag on the second external door opening through an air bag inflating mechanism, and connecting the air bag inflating mechanism with inflating equipment (such as an air compressor and the like) through an air pipe until the installation of the slurry shield starting sealing device is completed.
When a cutter head of the shield tunneling machine reaches the tunnel face and a shield shell is completely wrapped in the range of the first and second external access portals, an air compressor is started to press air into the sealed air bag so as to expand the sealed air bag; when the sealing air bag is tightly attached to the surface of the shield shell, the sealing effect is achieved; and injecting sealing slurry into the first sealing cabin through a sealing slurry injection port on the first external door opening, and then starting slurry building of the shield tunneling machine.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A slurry shield originating sealing device, comprising:
one end of the first external door opening (3) is fixed at the outer edge of the slurry shield starting tunnel door;
the steel wire sealing brush (5) is arranged at the inner edge of the first external door opening (3);
a second external door opening (4), one end of which is fixed at the other end of the first external door opening (3);
the first sealing assembly is connected between the other end of the first external door opening (3) and one end of the second external door opening (4), and a first sealing cabin is formed between the steel wire sealing brush (5) and the first sealing assembly;
the second sealing assembly is fixed at the other end of the first sealing assembly, and a second sealed cabin is formed between the second sealing assembly and the first sealing assembly; and
and the sealing air bag (10) is arranged in the second sealing cabin, one side of the sealing air bag is fixed on the inner edge surface of the second external door opening (4), and the other side of the sealing air bag is tightly attached to a shield shell of the shield tunneling machine.
2. The slurry shield originating sealing device according to claim 1, wherein a sealing slurry injection hole (3-1) is provided in the first external door opening (3), and the sealing slurry injection hole (3-1) is used for injecting sealing slurry into the first sealing chamber.
3. The mud shield originating sealing device of claim 1, wherein the first sealing assembly comprises:
the first curtain plate (6) is arranged between the first external door opening (3) and the second external door opening (4);
and the first folding pressing plate (8) is arranged at the end part of the inner side of the second external door opening (4) and is close to one side of the first curtain plate (6).
4. The mud shield originating sealing device of claim 1, wherein the second sealing assembly comprises:
the second curtain board (7) and the second page folding pressing plate (9), the second curtain board (7) and the second page folding pressing plate (9) are sequentially arranged on the outer end face of the second external door opening (4) from inside to outside.
5. The slurry shield starting sealing device according to claim 1, wherein the sealing air bag (10) is of an annular structure, an annular convex strip is arranged on the inner annular surface of the sealing air bag (10), and a plurality of annular convex strips are uniformly distributed in the middle of the inner annular surface of the sealing air bag (10) in a strip shape.
6. The mud shield originating sealing device according to claim 1, wherein said second external door opening (4) is provided with an inflation through hole, and said sealing air bag (10) is inflated and deflated through said inflation through hole.
7. The slurry shield starting sealing device according to claim 6, wherein an air bag inflating mechanism (11) is arranged in the inflating through hole, one end of the air bag inflating mechanism (11) is connected with the sealing air bag (10) in a sealing way, and the other end of the air bag inflating mechanism (11) penetrates through the inflating through hole and then is fixedly connected with the second external door opening (4).
8. The slurry shield starting sealing device according to claim 7, wherein the air bag inflating mechanism (11) comprises a valve core (11-1) and a locking nut (11-5), an inflating hole (10-2) is formed in the sealed air bag (10), the inflating hole (10-2) is arranged right opposite to the inflating hole, the valve core (11-1) is inserted into the inflating hole, one end of the valve core (11-1) is hermetically connected with the inflating hole (10-2), and the other end of the valve core penetrates through the inflating hole and then is fixedly connected with the second external door opening (4) through the locking nut (11-5).
9. The mud shield originating sealing device of claim 8, wherein the air bag inflation mechanism further comprises:
the air bag gasket (11-2) is sleeved on the outer side of the valve core (11-1) and is arranged between the sealing air bag (10) and the second external door opening (4);
the air bag gland (11-4) is sleeved on the outer side of the valve core (11-1) and is arranged between the second external door opening (4) and the locking nut (11-5);
and the O-shaped sealing ring (11-3) is sleeved on the outer side of the valve core (11-1) and is arranged between the air bag gland (11-4) and the second external door opening (4).
10. The slurry shield starting sealing device according to claim 1, wherein the first external door opening (3) and the slurry shield starting door opening are fixed by bolts, the first external door opening (3), the first sealing component and the second external door opening (4) are fixed by bolts, and the second sealing component and the second external door opening (4) are fixed by bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221616305.1U CN218235117U (en) | 2022-06-24 | 2022-06-24 | Sealing device for starting of slurry shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221616305.1U CN218235117U (en) | 2022-06-24 | 2022-06-24 | Sealing device for starting of slurry shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218235117U true CN218235117U (en) | 2023-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221616305.1U Active CN218235117U (en) | 2022-06-24 | 2022-06-24 | Sealing device for starting of slurry shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218235117U (en) |
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2022
- 2022-06-24 CN CN202221616305.1U patent/CN218235117U/en active Active
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