CN113944471B - Shield machine and shield tail sealing brush thereof - Google Patents

Shield machine and shield tail sealing brush thereof Download PDF

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Publication number
CN113944471B
CN113944471B CN202010827250.8A CN202010827250A CN113944471B CN 113944471 B CN113944471 B CN 113944471B CN 202010827250 A CN202010827250 A CN 202010827250A CN 113944471 B CN113944471 B CN 113944471B
Authority
CN
China
Prior art keywords
brush
plate
shield
tail sealing
shield tail
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
CN202010827250.8A
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Chinese (zh)
Other versions
CN113944471A (en
Inventor
何其平
彭正阳
梁兴生
杨运健
许欣
赵苗苗
欧阳惠宁
张卫东
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China Railway Construction Heavy Industry Group Co Ltd
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China Railway Construction Heavy Industry Group Co Ltd
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Publication of CN113944471A publication Critical patent/CN113944471A/en
Application granted granted Critical
Publication of CN113944471B publication Critical patent/CN113944471B/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/0635Tail sealing means, e.g. used as end shuttering
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/32Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3284Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
    • F16J15/3288Filamentary structures, e.g. brush seals

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

The invention discloses a shield machine and a shield tail sealing brush thereof. The division plates and the integral plates are alternately stacked in sequence, and the division plates and the integral plates are positioned on one side, away from the steel wire brush, of the support plate after the alternate stacking. Every division board includes at least two plywood that separate the setting, makes the elasticity increase of protection brush, guarantees that protection brush and section of jurisdiction fully laminate, fully shutoff shield tail and the gap between the section of jurisdiction, and sealed effect is better.

Description

Shield machine and shield tail sealing brush thereof
Technical Field
The invention relates to the field of shield machines, in particular to a shield machine and a shield tail sealing brush thereof.
Background
The shield tunneling machine is widely applied to tunnel excavation or various underground pipelines. The shield tail of the shield machine is usually provided with a plurality of shield tail sealing brushes, so that external slurry, stones, water and the like can be effectively prevented from entering the shield machine, meanwhile, a filling cavity is formed after the shield tail sealing brushes are attached to the pipe piece, the external pressure is balanced by filling shield tail grease into the filling cavity, sand and water gushing phenomena of the shield tail are reduced, and safe construction is guaranteed, so that the structure of the shield tail sealing brushes is especially necessary to optimize.
The existing shield tail sealing brush comprises a steel plate bundle and a steel wire bundle, wherein the steel plate bundle is formed by a plurality of steel plates which are stacked, so that the overall elasticity of the steel plate bundle is relatively weak, the steel plate bundle is difficult to be fully attached to a duct piece, gaps exist between the shield tail sealing brush and the duct piece, and the sealing effect is affected.
Disclosure of Invention
Therefore, the invention aims to provide the shield machine and the shield tail sealing brush thereof, wherein the original integral steel plate lamination arrangement of the shielding brush is changed into the alternate lamination arrangement of the partition plate and the integral plate, and the partition plate comprises at least two laminated plates which are arranged separately, so that the elasticity of the shielding brush is improved, the shielding brush is fully attached to the duct piece, and the sealing effect is improved.
The invention provides a shield tail sealing brush of a shield machine, which comprises a steel wire brush and protective brushes arranged on the front side and the rear side of the steel wire brush, wherein the protective brushes comprise:
a support plate which is propped against the steel wire brush;
the steel wire brush comprises a plurality of partition plates and integral plates, wherein the partition plates and the integral plates are alternately stacked and arranged on one side, far away from the steel wire brush, of the support plates, and any partition plate comprises at least two laminated plates which are arranged in a separated mode.
Preferably, the distance between adjacent two plates of each partition plate gradually increases in a direction toward the support plate.
Preferably, any of the partition plates includes a first layer plate and a second layer plate that are disposed apart from each other, and a symmetry plane of the integral plate coincides with a symmetry plane between the first layer plate and the second layer plate.
Preferably, the width of the partition plate is larger than the width of the whole plate.
Preferably, the width of the supporting plate is larger than that of the partition plate, so that the two ends of the supporting plate symmetrically form a lap joint part, and any two adjacent protective brushes are overlapped by the lap joint part.
Preferably, the protective brush comprises a front protective brush and a rear protective brush which are respectively arranged on the front side and the rear side of the steel wire brush, and the thickness of the rear protective brush is larger than that of the front protective brush.
Preferably, the wire brush comprises at least two layers, and the abutting end of the front protective brush, the abutting end of the two layers of wire brushes and the abutting end of the rear protective brush form a step-shaped structure.
Preferably, the fixing plate is provided with a U-shaped fixing groove, the fixing end of the front protection brush, the fixing ends of the two layers of steel wire brushes and the fixing ends of the rear protection brush are fixedly stacked in the U-shaped fixing groove, and the front protection brush, the steel wire brushes and the rear protection brush are fixedly arranged in the U-shaped fixing groove through rivets.
Preferably, the included angle between the protective brush and the fixed plate ranges from 40 degrees to 55 degrees.
The shield tunneling machine provided by the invention comprises any shield tail sealing brush.
Compared with the background art, the shield tail sealing brush of the shield machine comprises the steel wire brush and the protective brushes respectively arranged on the front side and the rear side of the steel wire brush, wherein the protective brushes comprise a supporting plate, a separating plate and an integral plate, and the supporting plate is tightly attached to the steel wire brush so as to support the separating plate and the integral plate. The division plates and the integral plates are alternately stacked in sequence, and the division plates and the integral plates are positioned on one side, away from the steel wire brush, of the support plate after the alternate stacking. Every division board includes at least two plywood that separate the setting, makes the elasticity increase of protection brush, guarantees that protection brush and section of jurisdiction fully laminate, fully shutoff shield tail and the gap between the section of jurisdiction, and sealed effect is better.
The shield machine comprising the shield tail sealing brush has the same technical effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a structural diagram of a shield tail sealing brush of a shield machine provided by an embodiment of the invention;
FIG. 2 is a view in the direction A of FIG. 1;
FIG. 3 is a cross-sectional view taken along B-B in FIG. 1;
fig. 4 is a cross-sectional view of the overlap of two adjacent guard brushes of fig. 1.
The reference numerals are as follows:
the steel wire brush 1, the protective brush 2, the fixed plate 3 and the rivet 4;
a support plate 21, a partition plate 22, and an integral plate 23;
a lap portion 211;
a front guard brush 201 and a rear guard brush 202;
u-shaped fixing groove 31.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that those skilled in the art will better understand the present invention, the following description will be given in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 4, fig. 1 is a block diagram of a shield tail seal brush of a shield machine according to an embodiment of the present invention; FIG. 2 is a view in the direction A of FIG. 1; FIG. 3 is a cross-sectional view taken along B-B in FIG. 1; fig. 4 is a cross-sectional view of the overlap of two adjacent guard brushes of fig. 1.
The embodiment of the invention discloses a shield tail sealing brush of a shield machine, which comprises a steel wire brush 1 and a protection brush 2, wherein the steel wire brush 1 comprises at least two layers, the protection brush 2 is arranged on the front side and the rear side of the steel wire brush 1, and the protection brush 2 is used for supporting the steel wire brush 1.
The protection brush 2 comprises a supporting plate 21, a partition plate 22 and an integral plate 23, wherein the supporting plate 21 is propped against the steel wire brush 1, so that the supporting plate 21 is tightly clung to the steel wire brush 1 to play a supporting role. One side of the supporting plate 21 far away from the steel wire brush 1 is provided with a plurality of partition plates 22 and a plurality of integral plates 23, the integral plates 23 are integral plates, the partition plates 22 comprise at least two laminated plates which are arranged separately, each partition plate 22 and each integral plate 23 are alternately laminated, the existing integral steel plate lamination arrangement is replaced, the elasticity of the protective brush 2 is increased to some extent, the protective brush 2 and the duct piece are guaranteed to be fully attached, gaps between the shield tail and the duct piece are fully blocked, and the sealing effect is good.
In order to further improve the elasticity of the protection brush 2, the distance between the adjacent two plates of each partition plate 22 gradually increases in the direction approaching the support plate 21, that is, the closer the partition plate 22 is to the support plate 21, the greater the distance between the adjacent two plates constituting the partition plate 22, the greater the deformation amount of the protection brush 2, and the elasticity naturally improves.
In this particular embodiment, each divider plate 22 includes a first plate and a second plate, with the first plate being spaced apart from the second plate. The thickness of the first layer plate and the second layer plate which are positioned on the same layer are equal. Accordingly, the distance between the first layer plate and the second layer plate gradually increases in the direction toward the support plate 21, that is, the gap of the partition plate 22 is wider closer to the support plate 21.
In order to make the protective brush 2 have better elasticity, the integral plate 23 is positioned in the middle between the first layer plate and the second layer plate, that is, the symmetrical plane of the integral plate 23 coincides with the symmetrical planes between the first layer plate and the second layer plate, so as to ensure that the deformation degree of the first layer plate and the second layer plate is consistent.
In order to further improve the elasticity of the protection brush 2, the width of the partition plate 22 is larger than that of the integral plate 23, so that the first layer plate and the second layer plate of each partition plate 22 and the integral plate 23 form a cover tile type laminated structure, and the deformation of the protection brush 2 is further improved.
In this embodiment, the width of each of the integral plates 23 is the same, the width of each of the partition plates 22 is the same, and the distance between the layers constituting each of the partition plates 22 gradually increases in the direction approaching the support plate 21, meaning that the width of the layers constituting each of the partition plates 22 gradually decreases in the direction approaching the support plate 21.
For reliable assembly of two adjacent protection brushes 2, on the basis that the width of the partition plate 22 is larger than that of the whole plate 23, the width of the support plate 21 is larger than that of the partition plate 22, two ends of the support plate 21 extend beyond the partition plate 22, the extending parts form overlapping parts 211, any two adjacent protection brushes 2 are overlapped by the aid of the overlapping parts 211, dislocation in the installation process of the two adjacent protection brushes 2 is prevented, and adjustment is provided for improving the tightness of the protection brushes 2. In this embodiment, the width of the overlap portion 211 provided at both ends of the support plate 21 is in the range of 40 to 60mm, but is not limited thereto.
The protection brush 2 comprises a front protection brush 201 and a rear protection brush 202 which are respectively arranged on the front side and the rear side of the steel wire brush 1, the large acting force born by the rear protection brush 202 is larger than that of the front protection brush 201 when the rear protection brush 202 is close to the steel wire brush, the thickness of the rear protection brush 202 is larger than that of the front protection brush 201, the rear protection brush 202 and the front protection brush 201 both comprise support plates 21 which are propped against the steel wire brush 1, and the difference is that the number of separation plates 22 and integral plates 23 laminated by the rear protection brush 202 is larger than that of the front protection brush 201.
Specifically, the rear protection brush 202 includes two partition plates 22 and two integral plates 23, each partition plate 22 being alternately laminated with each integral plate 23. The distance between the first layer plate and the second layer plate of the partition plate 22 positioned at the first layer ranges from 0mm to 5mm, the distance between the first layer plate and the second layer plate of the partition plate 22 positioned at the third layer ranges from 20 mm to 30mm, and of course, the width range between the first layer plate and the second layer plate can be adjusted according to actual conditions, and the present invention is not limited thereto. The front protection brush 201 includes a partition plate 22 and an integral plate 23, and the partition plate 22 is laminated with the integral plate 23. Of course, the thicknesses of the rear protective brush 202 and the front protective brush 201 are not limited thereto, and are specifically set according to the specifications and actual working conditions of the shield machine, and are not specifically limited thereto.
It should be noted that, the front and rear directions in this document are all in accordance with the current view of fig. 1, in fig. 1, the left side of the wire brush 1 is the front side described in this document, and the right side is the rear side described in this document.
In actual installation, one ends of the front protective brush 201, the steel wire brush 1 and the rear protective brush 202 are all abutted against the duct piece, and one end abutted against the duct piece is the abutting end. In this embodiment, the two layers of wire brushes 1 are specifically included, so that the abutting ends of the front protection brush 201, the abutting ends of the two layers of wire brushes 1 and the abutting ends of the rear protection brush 202 form a stepped structure, that is, the bending length of the front protection brush 201, the bending length of the wire brush 1 and the bending length of the rear protection brush 202 are sequentially increased.
Based on the above abutting ends, the other ends of the front protection brush 201, the two-layer wire brush 1, and the rear protection brush 202 are fixed together, which ends may be referred to as fixed ends. The invention also comprises a fixing plate 3, one end of the fixing plate 3 is horizontal, the other end is provided with a U-shaped fixing groove 31, and the fixing end of the front protection brush 201, the fixing ends of the two layers of steel wire brushes 1 and the fixing ends of the rear protection brush 202 are fixedly laminated in the U-shaped fixing groove 31.
To achieve reliable fixation, the fixed ends of the front protection brush 201, the two-layer wire brush 1, and the rear protection brush 202 are fixed to the U-shaped fixing groove 31 by rivets 4. In this embodiment, a plurality of groups of mutually penetrating mounting holes are formed on two sides of the U-shaped fixing groove 31, and the rivet 4 passing through one side of the U-shaped fixing groove 31 passes through the fixing end of the front protection brush 201, the fixing ends of the two layers of wire brushes 1 and the fixing ends of the rear protection brush 202 from top to bottom in sequence, based on the current view of fig. 1.
In order to be fully attached to the duct piece, the included angle between the protective brush 2 and the fixing plate 3 is preferably 40 ° to 55 °, but is not limited thereto.
The invention also provides a shield machine comprising the shield tail sealing brush, and the shield machine has the same technical effects.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a shield tail sealing brush of shield constructs machine which characterized in that, includes wire brush (1) and locates protection brush (2) of both sides around wire brush (1), protection brush (2) include:
a support plate (21) which is abutted against the wire brush (1);
the steel wire brushes (1) are arranged in a plurality of alternately laminated mode, and are arranged on one side, far away from the steel wire brushes (1), of the supporting plate (21), and the separating plate (22) comprises at least two laminated plates which are arranged in a separated mode.
2. Shield tail sealing brush of a shield machine according to claim 1, characterized in that the distance between adjacent two of said lamellas of each of said dividing plates (22) in the direction towards the support plate (21) is gradually increased.
3. Shield tail sealing brush of a shield machine according to claim 2, characterized in that any of the separating plates (22) comprises a first layer plate and a second layer plate arranged separately, the symmetry plane of the integral plate (23) coincides with the symmetry plane between the first layer plate and the second layer plate.
4. Shield tail sealing brush of a shield machine according to claim 2, characterized in that the width of the dividing plate (22) is larger than the width of the integral plate (23).
5. The shield tail sealing brush of a shield machine according to claim 4, wherein the width of the supporting plate (21) is larger than the width of the partition plate (22) so that the two ends of the supporting plate (21) symmetrically form overlapping parts (211), and any two adjacent protecting brushes (2) are overlapped by the aid of the overlapping parts (211).
6. Shield tail sealing brush of a shield machine according to any of claims 1-5, characterized in that the protecting brush (2) comprises a front protecting brush (201) and a rear protecting brush (202) which are respectively arranged at the front side and the rear side of the steel wire brush (1), and the thickness of the rear protecting brush (202) is larger than that of the front protecting brush (201).
7. The shield tail sealing brush of a shield machine according to claim 6, wherein the wire brush (1) comprises at least two layers, and the abutting ends of the front protective brush (201), the abutting ends of the two layers of the wire brush (1) and the abutting ends of the rear protective brush (202) form a stepped structure.
8. The shield tail sealing brush of a shield machine according to claim 7, further comprising a fixing plate (3), wherein the fixing plate (3) is provided with a U-shaped fixing groove (31), the fixing end of the front protection brush (201), the fixing ends of the two layers of the steel wire brushes (1) and the fixing ends of the rear protection brush (202) are fixedly stacked in the U-shaped fixing groove (31), and the front protection brush (201), the steel wire brushes (1) and the rear protection brush (202) are fixedly arranged in the U-shaped fixing groove (31) through rivets (4).
9. The shield tail sealing brush of a shield machine according to claim 8, wherein an included angle between the protective brush (2) and the fixed plate (3) ranges from 40 ° to 55 °.
10. A shield machine comprising the shield tail sealing brush of any one of claims 1 to 9.
CN202010827250.8A 2020-07-17 2020-08-17 Shield machine and shield tail sealing brush thereof Active CN113944471B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202021422689 2020-07-17
CN2020214226894 2020-07-17

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Publication Number Publication Date
CN113944471A CN113944471A (en) 2022-01-18
CN113944471B true CN113944471B (en) 2024-01-19

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