CN216974850U - Small-diameter earth pressure balance shield construction tunnel portal water stop sealing device - Google Patents
Small-diameter earth pressure balance shield construction tunnel portal water stop sealing device Download PDFInfo
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- CN216974850U CN216974850U CN202123276154.8U CN202123276154U CN216974850U CN 216974850 U CN216974850 U CN 216974850U CN 202123276154 U CN202123276154 U CN 202123276154U CN 216974850 U CN216974850 U CN 216974850U
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Abstract
The utility model relates to the technical field of water-stopping sealing of tunnel portals, and particularly discloses a small-diameter soil pressure balance shield construction tunnel portal water-stopping sealing device. Including the sealed body of entrance to a cave stagnant water and be used for installing the construction bolt of the sealed body of entrance to a cave stagnant water, still including setting up at the intraoral anticreep subassembly in tunnel hole, the anticreep subassembly includes the installation sleeve that corresponds with construction bolt and slides the top that sets up in the installation sleeve, and the telescopic one end lateral wall of installation runs through to slide and is equipped with a plurality of gag lever posts, and the equal rigid coupling of one end that the gag lever post is located the installation sleeve has can hold the function ball that the top promoted. The utility model aims to solve the problem that bolts are easy to fall off after a traditional tunnel portal water-stop sealing device is used for a long time.
Description
Technical Field
The application relates to the technical field of water stop sealing of tunnel portals, and particularly discloses a small-diameter earth pressure balance shield construction tunnel portal water stop sealing device.
Background
Along with the development of the urban modernization process, the construction of urban subways and various underground pipe gallery projects is actively carried out. The earth pressure balance shield plays an important role in the construction of subways and underground pipe galleries. The shield tunnel engineering comprises three processes of shield starting, shield tunneling and shield tunneling, wherein the construction of a starting section of the shield is a very key part in the shield engineering, particularly careful treatment is needed when the hydrogeological conditions of the stratum near a cave mouth are poor, and if the hydrogeological conditions are not properly treated, serious ground collapse, cave mouth collapse, large-area piping damage and other engineering accidents can easily occur. When the shield starting section is constructed, the installation of the water-stopping sealing device of the tunnel opening is indispensable. The good tunnel opening sealing technology can not only ensure that the slurry balance is quickly established after the shield machine enters the tunnel to ensure the smooth tunneling work, but also effectively block the possible seepage action of the stagnant water at the upper layer in the soil layer and prevent the inrush water from entering the working well.
The Chinese utility model patent with application number CN202020537948.1 discloses a small-diameter earth pressure balance shield construction tunnel portal water stop sealing device, which comprises a steel ring plate, cord fabric rubber connected with the steel ring plate, an annular plate, a fixed plate, a turning plate rotationally connected with the bottom end of the fixed plate, and bolts for sequentially connecting and fixing the steel ring plate, the cord fabric rubber, the annular plate and the fixed plate, and is characterized by also comprising an arc-shaped baffle plate; one end of the arc-shaped blocking piece is fixed on the fixing plate, and the other end of the arc-shaped blocking piece extends to be close to the top end of the turning plate. The device can overcome the defects of the existing water-stopping sealing device for the opening, the turning plate is completely attached to the shield sheath, and the inner surface of the turning plate is reasonably contacted with the cord fabric rubber. When the shield machine enters the tunnel, the turning plate is effectively pressed outside the shield machine, and the curtain cloth rubber is ensured to realize a better water-stopping sealing effect.
However, in the prior art, after long-term use, the bolt may fall off, and therefore, the inventor provides a small-diameter earth pressure balance shield construction tunnel portal water-stop sealing device in order to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that a bolt is easy to fall off after a traditional tunnel portal water-stopping sealing device is used for a long time.
In order to achieve the purpose, the basic scheme of the utility model provides a small-diameter earth pressure balance shield construction tunnel portal water-stop sealing device which comprises a portal water-stop sealing body, a mounting bolt and an anti-drop assembly, wherein the mounting bolt is used for mounting the portal water-stop sealing body, the anti-drop assembly is arranged in a tunnel portal, the anti-drop assembly comprises a mounting sleeve corresponding to the mounting bolt and a top head arranged in the mounting sleeve in a sliding mode, a plurality of limiting rods are arranged on the side wall of one end of the mounting sleeve in a penetrating and sliding mode, and a functional ball capable of being pushed by the top head is fixedly connected to one end, located in the mounting sleeve, of each limiting rod.
The principle and effect of this basic scheme lie in:
1. when utilizing the concrete to carry out the tunnel entrance to a cave and strengthening, according to the size in tunnel, a plurality of mounting holes unanimous with the installation sleeve external diameter are reserved to the equipartition to subsequent entrance to a cave stagnant water seals the installation of body.
2. When utilizing mounting bolt installation entrance to a cave stagnant water sealed body in the installation sleeve, insert the installation sleeve in the mounting hole, then the continuous wrong installation sleeve of twisting and extrusion top of mounting bolt can be, just make the function ball ejecting in the installation sleeve with the continuous follow of gag lever post this moment, the cover area of gag lever post alright be greater than the internal diameter of mounting hole this moment, mounting bolt alright screw up in the installation sleeve this moment, and the installation sleeve also can be tightly blocked in the mounting hole to prevent the condition that entrance to a cave stagnant water sealed body and mounting bolt drop.
Compared with the prior art, the mounting bolt structure has the advantages that the falling risk of the mounting bolt can be effectively reduced in the using process, the operation is simple, the structure is stable, and the mounting bolt structure is convenient to popularize and use in the field.
Furthermore, the gag lever post circumference equipartition sets up on the installation sleeve, and the gag lever post is located the equal rigid coupling in installation sleeve outer one end and has the backing sheet. The clamping stability is improved.
Furthermore, the extending pieces which are connected with the support in a sliding mode are sleeved between the support pieces. The clamping range is improved.
Furthermore, a sealing rubber pad is fixedly connected to the outer wall of the mounting sleeve. The sealing performance is improved.
Furthermore, a telescopic sealing gasket is fixedly connected between the supporting sheet and the mounting sleeve. The sealing performance is improved.
Further, the top is in a circular truncated cone shape, and the diameter of the top is increased from one side close to the functional ball to one side far away from the functional ball in sequence. The operation fluency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 shows a schematic structural diagram of a small-diameter earth pressure balance shield construction tunnel portal water-stop sealing device provided by an embodiment of the application;
fig. 2 shows a cross-sectional view of a small-diameter earth pressure balance shield construction tunnel portal water-stop sealing device provided by the embodiment of the application;
fig. 3 shows an installation schematic diagram of a small-diameter earth pressure balance shield construction tunnel portal water-stop sealing device provided by the embodiment of the application;
fig. 4 shows a partial enlarged view of a portion a in fig. 1 in a small-diameter earth pressure balance shield construction tunnel portal watertight sealing device according to an embodiment of the present application.
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the intended purpose of the utility model, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Reference numerals in the drawings of the specification include: installation sleeve 1, sealing rubber pad 2, gag lever post 3, backing sheet 4, expansion piece 5, top 6, entrance to a cave stagnant water sealing body 7, mounting bolt 8, entrance to a cave concrete 9, function ball 10.
The embodiment is shown in fig. 1, fig. 3 and fig. 4, and comprises a mounting sleeve 1, wherein the upper end of the mounting sleeve 1 is internally provided with connecting threads, the lower end inside the mounting sleeve 1 is slidably provided with a top 6, the top 6 is in an inverted round table shape, the side wall of the lower end of the mounting sleeve 1 is provided with six limiting rods 3 in a penetrating and sliding manner, one ends of the limiting rods 3, which are positioned in the mounting sleeve 1, are respectively welded with a functional ball 10 corresponding to the top 6, one ends of the limiting rods 3, which are positioned outside the mounting sleeve 1, are respectively welded with a supporting sheet 4, an expansion sheet 5 which is slidably connected with the supporting sheets is sleeved between each supporting sheet 4, the outer wall of the mounting sleeve 1 is fixedly connected with a sealing rubber gasket 2, and a telescopic sealing gasket is fixedly connected between each supporting sheet 4 and the mounting sleeve 1, as shown in fig. 3, still including installing the sealed body of entrance to a cave stagnant water 7 on entrance to a cave concrete 9 surface, the sealed body of entrance to a cave stagnant water 7 all installs on entrance to a cave concrete 9 through construction bolt 8 and installation sleeve 1.
When the mounting sleeve is used, firstly, when the tunnel portal is reinforced by using concrete, a plurality of mounting holes with the same outer diameter as that of the mounting sleeve 1 are uniformly distributed and reserved according to the size of a tunnel; then run through in every mounting hole and insert a mounting sleeve 1, the mounting hole need be run through completely to the left end of mounting sleeve 1, and the length of mounting sleeve 1 is greater than the length of mounting hole, and the external diameter of mounting sleeve 1 is unanimous with the internal diameter of mounting hole, at last alright paste opening stagnant water sealing body 7 on opening concrete 9, with the construction bolt 8 twist in the mounting sleeve 1 can.
In the using process, the utility model can effectively reduce the falling risk of the mounting bolt 8, has simple operation and stable structure and is convenient for popularization and use in the field.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (6)
1. The utility model provides a minor diameter earth pressure balance shield constructs construction tunnel entrance to a cave stagnant water sealing device which characterized in that: including the sealed body of entrance to a cave stagnant water and be used for installing the construction bolt of the sealed body of entrance to a cave stagnant water, still including setting up at the intraoral anticreep subassembly in tunnel hole, the anticreep subassembly includes the installation sleeve that corresponds with construction bolt and slides the top of setting in the installation sleeve, and the telescopic one end lateral wall of installation runs through to slide and is equipped with a plurality of gag lever posts, and the equal rigid coupling of one end that the gag lever post is located the installation sleeve has the function ball that can hold the top and promote.
2. The small-diameter earth pressure balance shield construction tunnel portal water-stop sealing device as claimed in claim 1, wherein the limiting rods are uniformly circumferentially arranged on the mounting sleeve, and supporting pieces are fixedly connected to one ends of the limiting rods, which are located outside the mounting sleeve.
3. The small-diameter earth pressure balance shield construction tunnel portal water-stop sealing device as claimed in claim 2, wherein expansion pieces in sliding connection with the supports are sleeved between the support pieces.
4. The small-diameter earth pressure balance shield construction tunnel portal water-stop sealing device as claimed in claim 3, wherein a sealing rubber pad is fixedly connected to the outer wall of the mounting sleeve.
5. The small-diameter earth pressure balance shield construction tunnel portal water-stop sealing device as claimed in claim 2, wherein a telescopic sealing gasket is fixedly connected between the supporting sheet and the mounting sleeve.
6. The small-diameter earth pressure balance shield construction tunnel portal water-stop sealing device as claimed in claim 1, wherein the top is in a shape of a circular truncated cone, and the diameter of the top increases from the side close to the functional ball to the side far away from the functional ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123276154.8U CN216974850U (en) | 2021-12-24 | 2021-12-24 | Small-diameter earth pressure balance shield construction tunnel portal water stop sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123276154.8U CN216974850U (en) | 2021-12-24 | 2021-12-24 | Small-diameter earth pressure balance shield construction tunnel portal water stop sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216974850U true CN216974850U (en) | 2022-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123276154.8U Active CN216974850U (en) | 2021-12-24 | 2021-12-24 | Small-diameter earth pressure balance shield construction tunnel portal water stop sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216974850U (en) |
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2021
- 2021-12-24 CN CN202123276154.8U patent/CN216974850U/en active Active
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