CN112392528B - Hydraulic internal mold system for rail top air duct post-pouring construction and application method thereof - Google Patents
Hydraulic internal mold system for rail top air duct post-pouring construction and application method thereof Download PDFInfo
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- CN112392528B CN112392528B CN202011280046.5A CN202011280046A CN112392528B CN 112392528 B CN112392528 B CN 112392528B CN 202011280046 A CN202011280046 A CN 202011280046A CN 112392528 B CN112392528 B CN 112392528B
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- 238000010276 construction Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 5
- 230000008602 contraction Effects 0.000 claims description 3
- 230000004048 modification Effects 0.000 abstract description 3
- 238000012986 modification Methods 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/003—Ventilation of traffic tunnels
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Mining & Mineral Resources (AREA)
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Abstract
The invention discloses a hydraulic internal mold system for post-pouring construction of a rail top air channel and an application method thereof, wherein the system comprises an internal mold, a demolding frame, a telescopic oil cylinder and a middle supporting leg; the demoulding frame comprises a longitudinal moving track and a plurality of cross beams vertically connected above the longitudinal moving track, and the bottoms of the inner side dies are rotatably hinged with two ends of the cross beams respectively; a plurality of groups of telescopic oil cylinders are hinged between the inner side die and the longitudinal rail along the longitudinal direction of the rail top air duct; the middle supporting legs are arranged in a plurality of rows along the longitudinal direction of the rail top air duct, each middle supporting leg comprises a supporting main body and a counter roller connected with the upper end of the supporting main body, the supporting main body is a conical structure body with a large upper part and a small lower part, and each middle supporting leg is detachably fixed on the outer die; the longitudinal moving track can be longitudinally movably arranged on the counter roller to realize the integral longitudinal movement of the inner die. The structure of middle part landing leg makes things convenient for the dismouting, after the external mold of rail top wind channel below was demolishd, can provide the holding power to the internal mold. The internal mold system can be continuously constructed, a high-quality molding surface can be obtained, and subsequent modification work is not needed.
Description
Technical Field
The invention relates to the construction of a rail top air duct of a subway station, in particular to a hydraulic internal mold system for post-pouring construction of the rail top air duct and an application method thereof.
Background
The rail top air duct is an important internal structural part in a ventilation system of a subway station, is suspended at the intersection position of a middle plate and a structural side wall of the station, is mainly used for ventilation and heat dissipation at the top of a train, and ensures stable temperature and air circulation in the air duct. Due to the special position, the concrete is not poured simultaneously with the main body of the station, but is poured and formed in a post-pouring mode in a mode of erecting a template inside. At present, the rail top air duct internal mold usually adopts the modes of wood mold construction, manual mold erecting and mold stripping. Because the internal space of the rail top air duct is narrow, the engineering quantity is large, the mode of wood formwork construction is difficult to operate, low in efficiency and high in labor intensity of workers, and a stable and consistent high-quality forming surface is difficult to guarantee due to the influence of manual operation.
Disclosure of Invention
The invention aims to provide a hydraulic internal mold system for rail top air duct post-pouring construction and an application method thereof, wherein the hydraulic internal mold system has the advantages of high automation degree, simplicity in assembly, high construction efficiency and good air duct forming effect.
The invention provides a hydraulic internal mold system for post-pouring construction of a rail top air channel, which comprises an internal mold, a demolding frame, a telescopic oil cylinder and a middle supporting leg, wherein the internal mold is provided with a cavity; the demoulding frame comprises a longitudinal moving track and a plurality of cross beams vertically connected above the longitudinal moving track, the bottoms of the inner side dies on two sides are respectively hinged with two ends of each cross beam, and the inner side dies can rotate around the hinged positions; a plurality of groups of telescopic oil cylinders are hinged between the inner side die and the longitudinal rail along the longitudinal direction of the rail top air duct; the middle supporting legs are arranged in a plurality of rows along the longitudinal direction of the rail top air duct, each middle supporting leg comprises a supporting main body and a counter roller connected with the upper end of the supporting main body, the supporting main body is a conical structure body with a large upper part and a small lower part, and each middle supporting leg is detachably fixed on the outer die; the longitudinal moving track is longitudinally movably arranged on the counter roller of the middle supporting leg.
In one embodiment of the above technical solution, a rubber sealing strip is fixed on the top surface of the inner mold.
In an embodiment of the above technical solution, the inner side mold includes a fixed lower mold and a movable upper mold detachably connected by a fastener, and the rubber sealing strip is fixed to a top surface of the movable upper mold.
In an embodiment of the above technical solution, the beam includes a middle beam and end beams at two sides thereof, the end beam includes a horizontal section and a lower inclined section, two ends of the middle beam are detachably connected with the horizontal section through fasteners, the lower end of the lower inclined section is hinged to the bottom of the lower fixed die, and the longitudinal movement rail is supported and fixed on the lower surface of the horizontal section.
In one embodiment of the above technical solution, the telescopic oil cylinder is hinged between the fixed lower die and the longitudinal moving rail.
In one embodiment of the above technical scheme, a supporting rod with adjustable length is hinged between the cross beam and the fixed lower die.
In an embodiment of the above technical solution, a threaded hole is formed in the bottom of the support body, and is used for installing a threaded fastener to fix the support body to the outer die.
The method for constructing the rail top air duct by using the system provided by the invention comprises the following steps:
1. first segment construction
(1) The middle supporting leg of the system is detachably fixed on an outer die, an assembly integral piece of a demolding frame and an inner die is arranged on a reverse roller at the top of the middle supporting leg, and the telescopic oil cylinder is in a contraction state at the moment;
(2) The demoulding frame slides on the counter roller, and the demoulding frame and the inner side die are integrally and longitudinally moved to a designated position;
(3) The telescopic oil cylinder extends out to enable the inner side die to rotate to erect the die;
(4) Connecting the support rod between the inner side mold and the demolding frame, and debugging the system to enable the support rod to reach a pouring state;
(5) Pouring concrete and curing to a preset strength;
(6) Removing the connection between the support rod and the inner side die, and rotatably placing the support rod on a demoulding frame;
(7) The telescopic oil cylinder contracts to enable the inner side die to rotate and retract;
(8) Mounting a middle supporting leg on the outer die of the next pouring section;
2. subsequent segment construction
The method is carried out by referring to the steps (2) to (8).
This centre form system passes through hydraulic cylinder and realizes taking off, founding the mould of template, and rethread demoulding frame slides on the anti-gyro wheel of middle part landing leg and realizes that the whole of hydraulic pressure centre form indulges and moves, easy operation, and degree of automation is high. The middle supporting leg is of a conical structure with a large upper part and a small lower part, so that the dismounting is convenient, and after the external mold below the rail top air channel is dismounted, the supporting force can be provided for the hydraulic internal mold through the conical surface. The whole operation process of the internal mold system is simple and effective, the mold is automatically retracted and erected, the positioning is accurate, continuous construction can be carried out, a high-quality forming surface can be obtained, the forming surface does not need subsequent modification work, and the process time is saved. The structure is a slender structure except the template, the structure is modularized, the installation is convenient, the occupied space is small, and the labor intensity of workers is reduced to a great extent.
Drawings
Fig. 1 is a schematic diagram of an operating state of an embodiment of the present invention.
Fig. 2 is an enlarged schematic view of a portion a in fig. 1 (with the telescopic cylinder removed).
Fig. 3 is a schematic top view of fig. 1.
Fig. 4 is a drawing state diagram of the present embodiment.
Detailed Description
As can be seen from fig. 1 to 3, the hydraulic internal mold system for post-cast construction of a rail top air duct disclosed in this embodiment includes an internal mold 1, a demolding frame 2, a telescopic cylinder 3, a middle support leg 4, and a support rod 5.
The middle supporting legs 4 are arranged in multiple rows along the longitudinal direction of the rail top air duct, each middle supporting leg 4 comprises a supporting main body 41 and a counter roller 44, the upper end of each supporting main body is connected with the corresponding upper end of the corresponding counter roller through a mounting frame, each supporting main body 41 is a conical structural body with a large upper end and a small lower end, thick nuts 42 are welded on the inner side of a bottom plate of each supporting main body 41, round holes are formed in the positions, corresponding to the thick nuts, of the bottom plate, and the thick nuts are matched with connecting bolts 43 used for installing and fixing the supporting main bodies 41.
The support body 41 of the middle support leg 4 is fixed on the external mould at the set position by the connecting bolt 43 and the thick nut 42 before the beam body is cast.
The stripper frame 2 comprises a longitudinal displacement rail 21 and a plurality of cross beams connected vertically above it. The longitudinal moving track 21 of the embodiment comprises an i-steel main body 211, a sliding strip 212 is arranged on the bottom surface of the i-steel, and a rib plate and an oil cylinder hinge lug plate are arranged between two wing plates of the i-steel main body.
The crossbeam includes the end portion crossbeam 23 of middle part crossbeam 22 and its both sides, and end portion crossbeam 23 includes horizontal segment and lower sloping section, and middle part crossbeam 22 both ends are connected through the horizontal segment of bolt, nut fastener and end portion crossbeam 23 can be dismantled respectively, can be applied to the rail top wind channel of various width sizes through the length extension of middle part crossbeam 22.
The lower surface of the horizontal section of the end cross beam 23 is fixedly connected with the upper wing plate of the I-shaped steel main body 211 through bolts.
The inner side die 1 comprises a fixed lower die 11, a movable upper die 12 and a rubber sealing strip 13, the fixed lower die 11 and the movable upper die 12 are connected and fixed into a whole through bolts and nuts, and the rubber sealing strip 13 is fixed on the top surface of the movable upper die 12, so that the close adhesion of the inner side die 1 and the concrete of the cast-in-advance top plate is ensured, and concrete leakage is prevented.
The telescopic oil cylinder 3 is hinged between the fixed lower die 11 and the I-shaped steel main body 211, and the fixed lower die 11 can rotate around the hinged position. The support rod 5 is hinged between the horizontal section of the end cross beam 23 and the fixed lower die 11.
The telescopic oil cylinder 3 and the support rod 5 are hinged on the fixed lower die 11, and the fixed lower die 11 and the movable upper die 12 are connected through bolts and nuts, so that the movable upper die 12 can be replaced according to different height dimensions of a rail top air channel or the arrangement condition of a downward turning beam, the inner die 1 is made to have universality, and the replacement is simple.
This centre form system realizes the mould and the drawing of patterns of inside form through flexible hydro-cylinder, and rethread drawing of patterns frame slides on the anti-gyro wheel of middle part landing leg and realizes that the whole of inside form is indulged and moves, easy operation, and degree of automation is high. The middle supporting leg is of a conical structure with a large upper part and a small lower part, so that the dismounting is convenient, and after the external mold below the rail top air channel is dismounted, the supporting force can be provided for the hydraulic internal mold through the conical surface.
The construction process adopting the internal mold system comprises the following steps:
before casting, mounting the middle supporting leg 4 on the outer die, fixing the middle supporting leg through a threaded fastener, and longitudinally moving the demoulding frame 2 and the inner side die 1 to a construction section integrally through the sliding of the demoulding frame 2 on the counter-roller 44; at the moment, the telescopic oil cylinder 3 is in a contraction state, and one end of the support rod 5 is hinged with the demoulding frame 2 and then is rotatably arranged on a cross beam of the demoulding frame;
the telescopic oil cylinder 3 extends out to enable the inner side die 1 to rotate to stand the die, then the supporting rod 5 above the cross beam is rotated to the direction of the inner side die and is connected with the fixed lower die 11, and the inner side die is supported and fixed; when the hydraulic internal mold is installed, concrete can be poured, and a system is debugged to enable the concrete to reach a pouring state;
after the concrete reaches the preset strength, the connection between the support rod 5 and the fixed lower die is removed, the support rod is rotated to the position above the cross beam, and then the telescopic oil cylinder 3 contracts to enable the inner die 1 to reversely rotate and be demoulded, as shown in fig. 4;
and before the next section is poured, installing the middle supporting leg of the next section, and finally longitudinally moving the demoulding frame and the inner side mould to the next section integrally for continuous construction.
The whole operation process of the internal mold system is simple and effective, the mold is automatically retracted and erected, the positioning is accurate, continuous construction is performed, a high-quality forming surface can be obtained, subsequent modification work is not needed, and the process time is saved. The structure is a slender structure except the template, the structure is modularized, the installation is convenient, the occupied space is small, and the labor intensity of workers is reduced to a great extent.
Claims (6)
1. The utility model provides a hydraulic pressure centre form system that is used for rail top wind channel post-cast construction which characterized in that: the device comprises an inner side die, a demoulding frame, a telescopic oil cylinder and a middle supporting leg;
the demolding frame comprises a longitudinal moving track and a plurality of cross beams vertically connected above the longitudinal moving track, the bottoms of the inner side molds on two sides are respectively hinged with two ends of each cross beam, and the inner side molds can rotate around the hinged parts;
a plurality of groups of telescopic oil cylinders are hinged between the inner side die and the longitudinal rail along the longitudinal direction of the rail top air duct;
the middle supporting legs are arranged in a plurality of rows along the longitudinal direction of the rail top air duct, each middle supporting leg comprises a supporting main body and a counter roller connected with the upper end of the supporting main body, the supporting main body is a conical structure body with a large upper part and a small lower part, and each middle supporting leg is detachably fixed on the outer die;
the longitudinal moving track can be longitudinally arranged on the counter roller of the middle supporting leg;
the inner side die comprises a fixed lower die and a movable upper die which are detachably connected through a fastener;
the transverse beams comprise middle transverse beams and end transverse beams on two sides of the middle transverse beams, each end transverse beam comprises a horizontal section and a lower inclined section, two ends of each middle transverse beam are detachably connected with the horizontal sections through fasteners, the lower ends of the lower inclined sections are hinged with the bottoms of the fixed lower dies, and the longitudinal moving rails are supported and fixed on the lower surfaces of the horizontal sections.
2. The hydraulic internal mold system for post-cast construction of the rail-roof duct according to claim 1, characterized in that: and a rubber sealing strip is fixed on the top surface of the movable upper die.
3. The hydraulic internal mold system for post-cast construction of the rail-roof duct according to claim 1, characterized in that: the telescopic oil cylinder is hinged between the fixed lower die and the longitudinal moving track.
4. The hydraulic internal mold system for post-cast construction of the rail-roof duct according to claim 1, characterized in that: a supporting rod with adjustable length is hinged between the cross beam and the fixed lower die.
5. The hydraulic internal mold system for the post-cast construction of the rail top air duct according to claim 1, characterized in that: and the bottom of the support main body is provided with a threaded hole for installing a threaded fastener to connect and fix the support main body and the outer die.
6. A method of constructing a rail head duct using the system of claim 1, comprising the steps of:
1. first segment construction
(1) The middle supporting leg of the system is detachably fixed on an outer die, an assembly integral piece of a demolding frame and an inner die is arranged on a reverse roller at the top of the middle supporting leg, and the telescopic oil cylinder is in a contraction state at the moment;
(2) The demoulding frame slides on the counter roller, and the demoulding frame and the inner side die are integrally and longitudinally moved to a designated position;
(3) The telescopic oil cylinder extends out to enable the inner side die to rotate to erect the die;
(4) Connecting the support rod between the inner mold and the demolding frame, and debugging a system to enable the support rod to reach a pouring state;
(5) Pouring concrete and curing to a preset strength;
(6) Removing the connection between the support rod and the inner side die, and rotatably arranging the support rod on the demoulding frame;
(7) The telescopic oil cylinder contracts to enable the inner side die to rotate and retract;
(8) Mounting a middle supporting leg on the outer die of the next pouring section;
2. subsequent segment construction
The method is carried out by referring to the steps (2) to (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011280046.5A CN112392528B (en) | 2020-11-16 | 2020-11-16 | Hydraulic internal mold system for rail top air duct post-pouring construction and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011280046.5A CN112392528B (en) | 2020-11-16 | 2020-11-16 | Hydraulic internal mold system for rail top air duct post-pouring construction and application method thereof |
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| Publication Number | Publication Date |
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| CN112392528A CN112392528A (en) | 2021-02-23 |
| CN112392528B true CN112392528B (en) | 2023-04-11 |
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| CN202011280046.5A Active CN112392528B (en) | 2020-11-16 | 2020-11-16 | Hydraulic internal mold system for rail top air duct post-pouring construction and application method thereof |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204327154U (en) * | 2014-12-12 | 2015-05-13 | 中铁建大桥工程局集团第五工程有限公司 | A kind of moving die plate system for tread air channel |
| CN204311741U (en) * | 2014-12-12 | 2015-05-06 | 中铁建大桥工程局集团第五工程有限公司 | Rack template system is watered behind a kind of portable tread air channel |
| CN106089253B (en) * | 2016-08-17 | 2018-08-24 | 中国路桥工程有限责任公司 | A kind of all-hydraulic template system poured for culvert |
| CN106437770B (en) * | 2016-11-09 | 2018-11-09 | 湖南五新模板有限公司 | A kind of hydraulic template trolley for pouring construction after rail against the wind road |
| CN106761824B (en) * | 2016-12-19 | 2019-01-01 | 中铁建大桥工程局集团第二工程有限公司 | For the subway station rail trolley that road pours against the wind |
| CN210714718U (en) * | 2019-08-01 | 2020-06-09 | 中铁十四局集团大盾构工程有限公司 | Subway station rail top air duct and shield synchronous construction mobile trolley |
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Address after: 418000 Xiangshang culture and Technology Industrial Park in Zhongfang County, Huaihua City, Hunan Province (east of Huaiqian Road, west of Ziyang Road, south of Wuxi East Road, north of Fengxiang Road) Applicant after: Hunan Wuxin Intelligent Technology Co.,Ltd. Address before: Hunan business culture and Technology Industrial Park, Zhongfang County, Huaihua City, Hunan Province Applicant before: Hunan China Railway Wuxin Steel Mould Co.,Ltd. |
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