CN111926708A - Segment beam wet joint prestress pore-forming device - Google Patents
Segment beam wet joint prestress pore-forming device Download PDFInfo
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- CN111926708A CN111926708A CN202010680419.1A CN202010680419A CN111926708A CN 111926708 A CN111926708 A CN 111926708A CN 202010680419 A CN202010680419 A CN 202010680419A CN 111926708 A CN111926708 A CN 111926708A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention belongs to the technical field of building construction, and provides a prestressed pore-forming device at a wet joint of a sectional beam, which comprises a rubber air bag, a feeding mechanism and an air filling and absorbing mechanism, wherein the rubber air bag is arranged on the feeding mechanism; the rubber air bag is connected with the feeding mechanism, the feeding mechanism is connected with the air inflating and sucking mechanism, and the air inflating and sucking mechanism is used for driving the feeding mechanism. The prestressed pore-forming device at the wet joint of the sectional beam provides driving force through the air filling and absorbing mechanism, the feeding mechanism realizes the feeding of the rubber air bag in the prestressed pore of the sectional beam, and the rubber air bag forms the prestressed pore at the wet joint of the sectional beam; the probability of occurrence of later-stage engineering quantity increase caused by prestress hole plugging is reduced, the construction efficiency is greatly improved, the cost is reduced, and the construction progress is accelerated.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a prestressed pore-forming device at a wet joint of a sectional beam.
Background
The structure prefabrication and assembly technology is a key technology for solving the problems of zero pollution, zero emission and low noise in the construction process of urban construction. The prefabricated section beams are connected between the segmented section beams by adopting a wet joint method by adopting a structure prefabrication and assembly technology, and the cross sections of the prefabricated section beams are provided with a plurality of prestressed ducts for prestressed steel strand penetration and bridge tensioning; the wet joint between two adjacent prefabricated section beams is usually sleeved by a corrugated pipe with a smaller diameter and a corrugated pipe in a prestress hole of the prefabricated section beam. When concrete is poured, corrugated pipes at wet joints between adjacent prefabricated section beams are easy to deform, so that prestressed ducts are blocked, and the post-treatment difficulty is great; the corrugated pipes between adjacent prefabricated section beams are sleeved with the corrugated pipes in the prefabricated section beams to form steps even if the corrugated pipes are not deformed, so that the difficulty of passing through the prestressed penetration beams is increased; the efficiency is greatly reduced, and the construction progress is slow.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a device for forming a prestressed duct at a wet joint of a sectional beam. The prestress penetration difficulty after the prestress hole at the wet joint of the segment girder is formed is reduced, the probability of increasing the later engineering quantity caused by prestress hole channel plugging is reduced, the efficiency is improved, the cost is reduced, and the construction progress is accelerated.
The invention provides a segment beam wet joint prestress pore-forming device, which comprises: the device comprises a rubber air bag, a feeding mechanism and an air inflating and sucking mechanism;
the rubber air bag is connected with the feeding mechanism, the feeding mechanism is connected with the air inflating and sucking mechanism, and the air inflating and sucking mechanism is used for driving the feeding mechanism and controlling the expansion and contraction of the rubber air bag.
The prestressed pore-forming device for the wet joint of the sectional beam provides driving force through the air filling and absorbing mechanism, the feeding mechanism realizes feeding of the rubber air bag in the prestressed pore of the sectional beam, and the rubber air bag forms the prestressed pore at the wet joint of the sectional beam.
Preferably, the feeding mechanism comprises a first sleeve, a second sub-sleeve, a first limiting ring and a second limiting ring which are coaxial with the axial center line;
the first sleeve penetrates through the rubber air bag and is connected with the rubber air bag; the first sleeve is provided with a first through hole, and the first through hole is communicated with the inside of the rubber air bag;
one end of the first sleeve is closed, the other end of the first sleeve is connected with a first circular block which is coaxial with the axial center line, the first circular block is provided with an airflow micropore which is coaxial with the axial center line and penetrates through the first circular block, and the diameter of the first circular block is larger than the outer diameter of the first sleeve;
the peripheries of the first limiting ring and the second limiting ring are both connected with the second sleeve, one end of the second sleeve is connected with the air charging and sucking mechanism, and the second limiting ring is positioned between the air charging and sucking mechanism and the first limiting ring; the first limiting ring is positioned between the second limiting ring and the rubber air bag;
the second sub-sleeve is sleeved on the inner wall of the second sleeve, and the second sub-sleeve is positioned between the first limiting ring and the second limiting ring; one end of the second sub-sleeve is connected with the second limiting ring; the first circular block is in sliding fit with the second sub-sleeve, the first limiting ring is matched with the first sleeve, a sealing ring is arranged between the first limiting ring and the first sleeve, the inner diameter of the second limiting ring is smaller than the diameter of the first circular block, and the sealing ring is sleeved on the outer ring of the first circular block; a plurality of first arc-shaped blocks which are uniformly distributed are arranged on the inner wall of the second sleeve; one end of each first arc-shaped block abuts against the first limiting ring, and the other end of each first arc-shaped block abuts against the second sub-sleeve; the diameter of a cylindrical cavity enclosed by the first arc-shaped blocks is the same as the inner diameter of the second sub-sleeve;
an airflow groove is formed in one side surface, close to the first sleeve, of the first circular block along the radial direction of the first circular block; when the first circular block is abutted against the first limiting ring, the inner cavity of the second sleeve is communicated with the inner cavity of the first sleeve through the airflow groove of the first circular block.
Preferably, the rubber air bag is provided with two air bag through holes, and the two air bag through holes are respectively connected with an air bag sleeve; two all seted up the seal groove in the gasbag sleeve, two all be equipped with the sealing washer in the seal groove, two the sealing washer is all established on the first sleeve pipe, two the one end of gasbag far away from the gasbag of gasbag sleeve all is connected with the spring, two the telescopic one end of gasbag far away from the spring all is connected with annular fixed block, two annular fixed block with first sleeve pipe fixed connection.
Preferably, the closed end of the first sleeve is connected with a connecting piece, the connecting piece is connected with two first rollers, the two first rollers are positioned on two sides of the first sleeve, the distances from the two first rollers to the axial center line of the first sleeve are equal, and the rolling directions of the two first rollers are the same as the sliding direction of the first round block; and two second rollers are arranged on the outer wall of the second sleeve corresponding to the two first rollers.
Preferably, the feeding mechanism further comprises a third sleeve, a third sub-sleeve, a third limiting ring, a fourth limiting ring and a second circular block which are coaxial with the axial center line; the second circular block is connected with a second sleeve by the same axial center line, and the structures and the connection modes of the third sleeve, the third sub-sleeve, the third limiting ring, the fourth limiting ring and the second circular block and the second sleeve are similar to those of the second sleeve, the second sub-sleeve, the first limiting ring, the second limiting ring and the first circular block and the first sleeve; one end of the third sleeve is connected with the air filling and sucking mechanism, and the fourth limiting ring is located between the air filling and sucking mechanism and the third limiting ring.
Preferably, the air inflation and suction mechanism is a dual-purpose pressure pump for air suction and air inflation.
The invention has the beneficial effects that:
compared with the traditional corrugated pipe type prestressed hole forming mode at the wet joint of the sectional beam, the prestressed hole shape formed by the rubber air bag reduces the passing difficulty of the prestressed beam, reduces the occurrence probability of later-stage engineering quantity increase caused by prestressed duct plugging, greatly improves the construction efficiency, reduces the cost and quickens the construction progress.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural diagram of a pre-stressed duct forming device at a wet joint of a sectional beam according to an embodiment of the present invention;
FIG. 2 is a partial schematic view of a rubber bladder of the pre-stressed duct forming apparatus for wet joints of the sectional beam shown in FIG. 1;
fig. 3 is a schematic structural diagram of a prestressed duct forming device at a wet joint of the sectional beam shown in fig. 1 (after a third sleeve is added).
Reference numerals:
1-a rubber air bag; 11-airbag through holes; 12-a sleeve; 13-a seal groove; 14-a sealing ring; 15-a spring; 16-annular fixed block;
2-a feeding mechanism; 21-a first sleeve; 211 — a first via; 212-a connector; 213-a first wheel; 22-a second sleeve; 221-a second roller; 23-a second sub-sleeve; 24-a first limit ring; 25-a second limit ring; 26-a first circular block; 261-an air flow groove; 262-gas flow micropores; 27-a first arcuate block;
3-an air charging and sucking mechanism;
41-a third sleeve; 42-a third sub-sleeve; 43-a third limit ring; 44-a fourth limit ring; 45-a second circular block; 46-second arc-shaped block.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
Fig. 1 to fig. 3 illustrate a device for forming a pre-stressed duct at a wet joint of a sectional beam according to an embodiment of the present invention, which includes a rubber air bag 1, a feeding mechanism 2, and an air charging and absorbing mechanism 3; the rubber air bag 1 is connected with a feeding mechanism 2, the feeding mechanism 2 is connected with an air inflating and sucking mechanism 3, and the air inflating and sucking mechanism 3 is used for driving the feeding mechanism 2 and controlling the expansion and contraction of the rubber air bag 1.
The prestressed duct pore-forming device at the wet joint of the sectional beam provided by the embodiment is implemented as follows:
the first step, before implementation, the section of the wet joint between two sections of section beams is subjected to roughening treatment: chiseling is carried out by manual operation or high-pressure water gun chiseling equipment, qualified chiseling is carried out by exposing the full-section coarse aggregate, and the exposed size is not less than one fourth of the particle size of the coarse aggregate. The manual operation roughening time is controlled to be 2 days after the initial setting of the cast concrete, and the high-pressure water gun operation roughening time is controlled to be 3 days after the initial setting of the cast concrete.
And secondly, locking adjacent section beams by using a stiff framework to ensure that the beams do not deviate in the construction process.
Thirdly, the feeding mechanism 2 is driven to move to a wet joint in a prestressed hole of the sectional beam through the air inflating and absorbing mechanism 3, the feeding mechanism 2 stops moving when the feeding mechanism reaches a specified position, and the air inflating and absorbing mechanism 3 inflates the rubber air bag 1 connected with the feeding mechanism 2; and the rubber air bag 1 positioned at the wet joint between the two sections of section beams expands after being inflated until no gap exists between the rubber air bag 1 and the corrugated pipe in the section beam.
And fourthly, checking whether the rubber air bag 1 leaks air or not, and if the rubber air bag 1 leaks air, immediately replacing the rubber air bag. And (3) coating the surface of the rubber air bag 1 with a high-performance composite release agent under all normal conditions.
And fifthly, pouring wet joint concrete, wherein the slump of the concrete meets the requirements of design drawings, and the vibration of the concrete is well controlled.
And sixthly, watering and maintaining in time after concrete pouring is finished, and if construction is carried out in winter, maintaining according to construction requirements in winter.
And seventhly, exhausting the air of the feeding mechanism 2 through the air charging and sucking mechanism 3, releasing the air of the rubber air bag 1 from the concrete, continuing to exhaust the air, and withdrawing the feeding mechanism 2.
Specifically, the feeding mechanism 2 comprises a first sleeve 21, a second sleeve 22, a second sub-sleeve 23, a first limit ring 24 and a second limit ring 25 which are coaxial with the axial center line;
the first sleeve 21 penetrates through the rubber air bag 1 and is connected with the rubber air bag 1; the first sleeve 21 is provided with a first through hole 211, and the first through hole 211 is communicated with the inside of the rubber airbag 1;
one end of the first sleeve 21 is closed, the other end of the first sleeve 21 is connected with a first circular block 26 which is coaxial with the axial center line, the first circular block 26 is provided with an airflow micropore 262 which is coaxial with the axial center line and penetrates through, and the diameter of the first circular block 26 is larger than the outer diameter of the first sleeve 21;
the peripheries of the first limiting ring 24 and the second limiting ring 25 are both connected with the second sleeve 22, one end of the second sleeve 22 is connected with the air charging and sucking mechanism 3, and the second limiting ring 25 is positioned between the air charging and sucking mechanism 3 and the first limiting ring 24; the first limit ring 24 is positioned between the second limit ring 25 and the rubber air bag 1;
the second sub-sleeve 23 is sleeved on the inner wall of the second sleeve 22, and the second sub-sleeve 23 is positioned between the first limit ring 24 and the second limit ring 25; one end of the second sub-sleeve 23 is connected with a second limit ring 25; the first circular block 26 is in sliding fit with the second sub-sleeve 23, the first limiting ring 24 is matched with the first sleeve 21, the sealing ring 14 is arranged between the first limiting ring 24 and the first sleeve 21, the inner diameter of the second limiting ring 25 is smaller than the diameter of the first circular block 26, and the sealing ring 14 is sleeved on the outer ring of the first circular block 26; a plurality of first arc-shaped blocks 27 which are uniformly distributed are arranged on the inner wall of the second sleeve 22; one end of each first arc-shaped block 27 abuts against the first limiting ring 24, and the other end of each first arc-shaped block 27 abuts against the second sub-sleeve 23; the diameter of the cylindrical cavity enclosed by the first arc-shaped blocks 27 is the same as the inner diameter of the second sub-sleeve 23.
An airflow groove 261 is formed in one side face, close to the first sleeve 21, of the first circular block 26 along the radial direction of the first circular block, and when the first circular block 26 abuts against the first limiting ring 24, the inner cavity of the second sleeve 22 is communicated with the inner cavity of the first sleeve 21 through the airflow groove 261 of the first circular block 26.
The embodiment provides a prestressed duct pore-forming device at a wet joint of a sectional beam,
when in inflation: the air inflating and sucking mechanism 3 inflates the second sleeve 22, pushes the first circular block 26 to move along the axial direction of the first circular block, and the first circular block 26 is attached to the second sub-sleeve 23, slides to one end, close to the first limiting ring 24, of the second sub-sleeve 23 and then is separated from the second sub-sleeve 23; at this time, the first circular block 26 abuts against the first limit ring 24, and the air flows into the inner cavity of the first sleeve 21 along the air flow groove 261 on the first circular block 26 until the inner cavity is full and the air enters the interior of the rubber airbag 1 through the first through hole 211.
When air is pumped: the air inflation and suction mechanism 3 is used for pumping air, the rubber air bag 1 is deflated and contracted, the first round block 26 slides to approach the air inflation and suction mechanism 3, when the first round block 26 is attached to the second sub-sleeve 23, air cannot flow out through the airflow groove 261, at the moment, air flows out from the airflow micropores 262, when the first round block 26 abuts against the first limiting ring 24, the inner cavity of the second sleeve 22 is communicated with the inner cavity of the first sleeve 21 through the airflow groove 261 of the first round block 26, the first arc-shaped block 27 is located on the periphery of the first round block 26 at the moment, the first arc-shaped block is arranged to prevent the first round block 26 from radially shaking along the first arc-shaped block, and the position of the first arc-shaped block 27 and the position of the airflow groove 261 are staggered to prevent air from flowing along the airflow groove 261. In order to improve the working efficiency, a sealing device can be arranged between the first limiting ring 24 and the first sleeve 21, for example, a sealing groove is formed in the inner periphery of the first limiting ring 24, and a sealing ring is arranged in the sealing groove.
In addition, two air bag through holes 11 are formed in the rubber air bag 1, and the two air bag through holes 11 are respectively connected with an air bag sleeve 12; seal groove 13 has all been seted up in two gasbag sleeves 12, all is equipped with sealing washer 14 in two seal grooves 13, and two sealing washers 14 are all established on first sleeve pipe 21, and the one end of the gasbag is far away to two gasbag sleeves 12 all is connected with spring 15, and the one end of gasbag sleeve 12 is far away to two spring 15 all is connected with annular fixed block 16, two annular fixed blocks 16 and first sleeve pipe 21 fixed connection.
When the section beam wet joint department prestressing force pore-forming device that this embodiment provided was implemented, the effect that the setting of spring 15 can be when rubber gasbag 1 bleeds the shrink is better, and rubber gasbag 1 more laminates with first sleeve 21, reduces the probability that rubber gasbag 1 touched the block with second sleeve 22
Furthermore, the closed end of the first sleeve 21 is connected with a connecting piece 212, the connecting piece 212 is connected with two first rollers 213, the two first rollers 213 are positioned at two sides of the first sleeve 21, the distances from the two first rollers 213 to the axial center line of the first sleeve 21 are equal, and the rolling directions of the two first rollers 213 are the same as the sliding direction of the first circular block 26; two second rollers 221 are disposed on the outer wall of the second sleeve 22 corresponding to the two first rollers 213.
When the prestressed duct forming device at the wet joint of the sectional beam provided by the embodiment moves in the corrugated pipe forming prestressed hole of the sectional beam, the design of the first roller 213 and the second roller 221 can reduce the collision and increase the efficiency.
Moreover, the feeding mechanism 2 further comprises a third sleeve 41, a third sub-sleeve 42, a third limit ring 43, a second arc-shaped block 46, a fourth limit ring 44 and a second circular block 45 which are coaxial with the axial center line; the structures and the connection modes between the third sleeve 41, the third sub-sleeve 42, the third limit ring 43, the second arc-shaped block 46, the fourth limit ring 44, the second circular block 45 and the second sleeve 22 are similar to those between the second sleeve 22, the second sub-sleeve 23, the first limit ring 24, the first arc-shaped block 27, the second limit ring 25, the first circular block 26 and the first sleeve 21; one end of the third sleeve 41 is connected with the air charging and sucking mechanism 3, and the fourth limit ring 44 is located between the air charging and sucking mechanism 3 and the third limit ring 43.
According to the prestressed duct forming device at the wet joint of the section beam provided by the embodiment, the second sleeve 22 can be arranged outside the first sleeve 21 according to the size of the section beam, and the third sleeve 41 can be continuously added outside the second sleeve 22, so that the feeding length of the device is increased.
Specifically, the air charging and sucking mechanism 3 may be a dual-purpose pressure pump for air suction and air inflation, or may be a combination of other devices for air suction and air inflation or a combination of devices for air suction and air inflation.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (6)
1. The device for forming the prestressed pore at the wet joint of the sectional beam is characterized by comprising a rubber air bag, a feeding mechanism and an air filling and absorbing mechanism;
the rubber air bag is connected with the feeding mechanism, the feeding mechanism is connected with the air inflating and sucking mechanism, and the air inflating and sucking mechanism is used for driving the feeding mechanism and controlling the expansion and contraction of the rubber air bag.
2. The device for forming the prestressed duct at the wet joint of the sectional beam as claimed in claim 1, wherein: the feeding mechanism comprises a first sleeve, a second sub-sleeve, a first limiting ring and a second limiting ring which are coaxial with the axial center line;
the first sleeve penetrates through the rubber air bag and is connected with the rubber air bag; the first sleeve is provided with a first through hole, and the first through hole is communicated with the inside of the rubber air bag;
one end of the first sleeve is closed, the other end of the first sleeve is connected with a first circular block which is coaxial with the axial center line, the first circular block is provided with an airflow micropore which is coaxial with the axial center line and penetrates through the first circular block, and the diameter of the first circular block is larger than the outer diameter of the first sleeve;
the peripheries of the first limiting ring and the second limiting ring are both connected with the second sleeve, one end of the second sleeve is connected with the air charging and sucking mechanism, and the second limiting ring is positioned between the air charging and sucking mechanism and the first limiting ring; the first limiting ring is positioned between the second limiting ring and the rubber air bag;
the second sub-sleeve is sleeved on the inner wall of the second sleeve, and the second sub-sleeve is positioned between the first limiting ring and the second limiting ring; one end of the second sub-sleeve is connected with the second limiting ring; the first circular block is in sliding fit with the second sub-sleeve, the first limiting ring is matched with the first sleeve, a sealing ring is arranged between the first limiting ring and the first sleeve, the inner diameter of the second limiting ring is smaller than the diameter of the first circular block, and the sealing ring is sleeved on the outer ring of the first circular block; a plurality of first arc-shaped blocks which are uniformly distributed are arranged on the inner wall of the second sleeve; one end of each first arc-shaped block abuts against the first limiting ring, and the other end of each first arc-shaped block abuts against the second sub-sleeve; the diameter of a cylindrical cavity enclosed by the first arc-shaped blocks is the same as the inner diameter of the second sub-sleeve;
an airflow groove is formed in one side surface, close to the first sleeve, of the first circular block along the radial direction of the first circular block; when the first circular block is abutted against the first limiting ring, the inner cavity of the second sleeve is communicated with the inner cavity of the first sleeve through the airflow groove of the first circular block.
3. The device for forming the prestressed duct at the wet joint of the sectional beam as claimed in claim 2, wherein: the rubber air bag is provided with two air bag through holes, and the two air bag through holes are respectively connected with an air bag sleeve; two all seted up the seal groove in the gasbag sleeve, two all be equipped with the sealing washer in the seal groove, two the sealing washer is all established on the first sleeve pipe, two the one end of gasbag far away from the gasbag of gasbag sleeve all is connected with the spring, two the telescopic one end of gasbag far away from the spring all is connected with annular fixed block, two annular fixed block with first sleeve pipe fixed connection.
4. The device for forming the prestressed duct at the wet joint of the sectional beam as claimed in claim 2 or 3, wherein: the closed end of the first sleeve is connected with a connecting piece, the connecting piece is connected with two first rollers, the two first rollers are positioned on two sides of the first sleeve, the distances from the two first rollers to the axial center line of the first sleeve are equal, and the rolling direction of the two first rollers is the same as the sliding direction of the first round block; and two second rollers are arranged on the outer wall of the second sleeve corresponding to the two first rollers.
5. The device for forming the prestressed duct at the wet joint of the sectional beam as claimed in claim 2, wherein: the feeding mechanism also comprises a third sleeve, a third sub-sleeve, a third limiting ring, a second arc-shaped block, a fourth limiting ring and a second circular block which are coaxial with the axial center line; the structure and the connection mode between the third sleeve, the third sub-sleeve, the third limiting ring, the second arc-shaped block, the fourth limiting ring, the second circular block and the second sleeve are similar to those between the second sleeve, the second sub-sleeve, the first limiting ring, the first arc-shaped block, the second limiting ring, the first circular block and the first sleeve; one end of the third sleeve is connected with the air filling and sucking mechanism, and the fourth limiting ring is located between the air filling and sucking mechanism and the third limiting ring.
6. The device for forming the prestressed duct at the wet joint of the sectional beam as claimed in claim 2 or 5, wherein: the air inflation and suction mechanism is a dual-purpose pressure pump for air suction and air inflation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010680419.1A CN111926708B (en) | 2020-07-15 | 2020-07-15 | Segment beam wet joint prestress pore-forming device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010680419.1A CN111926708B (en) | 2020-07-15 | 2020-07-15 | Segment beam wet joint prestress pore-forming device |
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| CN111926708A true CN111926708A (en) | 2020-11-13 |
| CN111926708B CN111926708B (en) | 2022-08-30 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008095301A (en) * | 2006-10-06 | 2008-04-24 | Bridgestone Corp | Bridge-girder cut-off means, and its manufacturing method |
| CN105625191A (en) * | 2016-02-02 | 2016-06-01 | 中交一公局第二工程有限公司 | Construction method of segment girder prestressed pipeline |
| CN206607871U (en) * | 2017-02-24 | 2017-11-03 | 中铁北京工程局集团有限公司 | A kind of prestressed pore passage former |
| CN107338729A (en) * | 2017-07-11 | 2017-11-10 | 中铁四局集团第二工程有限公司 | A kind of prestress pipe anti-blocking device and construction method |
| CN208058251U (en) * | 2018-02-13 | 2018-11-06 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of gasbag-type ring orientation prestress bracing means in pipe |
| WO2019068231A1 (en) * | 2017-10-08 | 2019-04-11 | 朱子毅 | Cast-in-place tooling for polyurethane elastomer expansion joint of railway bridge |
| CN110002040A (en) * | 2019-04-30 | 2019-07-12 | 舟山丰冠轻工机械有限公司 | A kind of bias filling valve |
| CN210482054U (en) * | 2019-05-31 | 2020-05-08 | 中建市政工程有限公司 | Anti-blocking device for prestressed pipeline |
-
2020
- 2020-07-15 CN CN202010680419.1A patent/CN111926708B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008095301A (en) * | 2006-10-06 | 2008-04-24 | Bridgestone Corp | Bridge-girder cut-off means, and its manufacturing method |
| CN105625191A (en) * | 2016-02-02 | 2016-06-01 | 中交一公局第二工程有限公司 | Construction method of segment girder prestressed pipeline |
| CN206607871U (en) * | 2017-02-24 | 2017-11-03 | 中铁北京工程局集团有限公司 | A kind of prestressed pore passage former |
| CN107338729A (en) * | 2017-07-11 | 2017-11-10 | 中铁四局集团第二工程有限公司 | A kind of prestress pipe anti-blocking device and construction method |
| WO2019068231A1 (en) * | 2017-10-08 | 2019-04-11 | 朱子毅 | Cast-in-place tooling for polyurethane elastomer expansion joint of railway bridge |
| CN208058251U (en) * | 2018-02-13 | 2018-11-06 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of gasbag-type ring orientation prestress bracing means in pipe |
| CN110002040A (en) * | 2019-04-30 | 2019-07-12 | 舟山丰冠轻工机械有限公司 | A kind of bias filling valve |
| CN210482054U (en) * | 2019-05-31 | 2020-05-08 | 中建市政工程有限公司 | Anti-blocking device for prestressed pipeline |
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| CN111926708B (en) | 2022-08-30 |
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