CN108748622B - PC track beam bottom die system - Google Patents
PC track beam bottom die system Download PDFInfo
- Publication number
- CN108748622B CN108748622B CN201811003015.8A CN201811003015A CN108748622B CN 108748622 B CN108748622 B CN 108748622B CN 201811003015 A CN201811003015 A CN 201811003015A CN 108748622 B CN108748622 B CN 108748622B
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- Prior art keywords
- limiting
- bottom die
- moving track
- bearing
- longitudinal moving
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- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 claims description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 4
- 238000009417 prefabrication Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/02—Moulds with adjustable parts specially for modifying at will the dimensions or form of the moulded article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0002—Auxiliary parts or elements of the mould
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Units (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
The invention discloses a PC track beam bottom die system, which comprises a bottom die template, a longitudinal moving track, a bearing cross beam, a limiting assembly and a running device, wherein the bottom die template is arranged on the longitudinal moving track; the bottom die template is connected with the top surface of the bearing cross beam; the bearing cross beam is arranged above the longitudinal moving track and is transversely erected; two ends of the bearing beam are symmetrically connected with the limiting components; the limiting component can tightly prop up the longitudinally moving track along the upward inclined direction; the running device is arranged above the bearing beam corresponding to the longitudinal moving track and can be lifted relative to the bearing beam; when the beam body is poured, the running gear rises, the bearing beam is contacted with the longitudinally moving track, when the bottom die is adjusted, the running gear descends, the bearing beam is lifted and separated from the longitudinally moving track surface, and the running gear can drive the bottom die template and the bearing beam to run on the longitudinally moving track, so that manpower and material resources are saved, and the construction efficiency is improved. When the bottom die is fixed, the multi-degree-of-freedom limiting is realized through the limiting assembly, so that the dimensional accuracy of the beam body is ensured, and the prefabrication quality of the beam body is improved.
Description
Technical Field
The invention relates to a PC track beam template, in particular to a PC track beam bottom die system.
Background
At present, with the development of rail transit, the track designs of domestic urban rail transit such as light rails, medium-low speed magnetic levitation and the like are increasingly adopting a single-track traffic mode. The PC track beam is the most common type of monorail traffic, and the PC track continuous beam is widely applied to urban rail traffic construction due to the advantages of small deformation, high rigidity, few expansion joints, stable and comfortable driving, simple maintenance, high shock resistance and the like. The PC track continuous beam is a continuous bridge span structure with a variable cross section (variable height), the bottom curve of the PC track continuous beam is a circular curve or a quadratic parabola, the length of the PC track continuous beam is changed according to the different spans of the line bridges, and the PC track continuous beam has similar structures but different lengths. As the PC track beam is a bearing structure for bearing the load of the train and is also a running track of the train and a system equipment channel, the stability and the precision requirements of the PC track beam on the templates are greatly improved compared with those of other bridges.
The bridge with variable cross section and variable length is prefabricated, and the bottom die is usually constructed by the following steps: dividing the bottom die template into a plurality of sections with different lengths, splitting each section according to the beam shape, and rearranging and combining the sections to ensure that the bridge meets the construction requirements of the bridge. This process of disassembly and reassembly requires a lot of manpower and material resources, and at the same time, the fixing manner of the bottom die is a great difficulty because the longitudinal position of the bottom die needs to be changed arbitrarily. The most common assembly and disassembly mode at present is to disassemble and assemble the template by hoisting the hoisting equipment section by section, and the fixation of the bottom die is to manually adjust in place and then directly weld and fix with the pedestal, and the welding seam is cut or ground off during the disassembly, so that the operation is repeated. The existing structural mode is difficult to locate, the fixing mode is backward, the construction efficiency is low, and the forming effect is poor.
Disclosure of Invention
The invention aims to provide a PC track beam bottom die system which can limit multiple degrees of freedom when a bottom die is fixed and can move by itself when the bottom die is adjusted, thereby saving manpower and material resources, improving construction efficiency and ensuring concrete forming quality.
The PC track beam bottom die system provided by the invention comprises a bottom die template, a longitudinal moving track, a bearing cross beam, a limiting assembly and a running device; the bottom die template is connected with the top surface of the bearing cross beam; the bearing cross beam is arranged above the longitudinal moving track and is transversely erected; two ends of the bearing beam are symmetrically connected with the limiting components; the limiting component can tightly prop up the longitudinally moving track along the upward inclined direction; the running device is arranged above the bearing beam corresponding to the longitudinal moving track and can be lifted relative to the bearing beam; when the beam body is poured, the running device rises, the bearing beam is contacted with the longitudinal moving track, when the bottom die is adjusted, the running device descends, the bearing beam rises and is separated from the longitudinal moving track surface, and the running device can drive the bottom die template and the bearing beam to run on the longitudinal moving track.
The bearing cross beams are arranged in a plurality of groups along the length direction of the beam body.
The longitudinal moving rail is of an I-shaped structure and is fixed on the pedestal.
The bearing beam comprises a supporting beam and a connecting beam which are connected up and down into a whole, and the bottom surfaces of the two ends of the connecting beam are respectively arranged on the top surfaces of the corresponding side longitudinal moving tracks.
The limiting assembly comprises a limiting clamping plate, a limiting block and a limiting bolt; the upper end of the limiting clamp plate is connected with the end part of the connecting beam into a whole, the inner side of the lower end is an inclined surface, the limiting block is arranged at an outer included angle between the upper wing plate and the web plate of the longitudinal moving rail, the outer side of the limiting block comprises an inclined surface parallel to the inclined surface of the jacking clamp plate, and the limiting bolt obliquely upwards penetrates through the limiting clamp plate and then jacks the limiting block.
The inner side of the limiting block is attached to the web plate and the upper flange of the longitudinal moving track, the limiting block is adsorbed on the longitudinal moving track through a permanent magnet, a groove is formed in the inclined surface of the outer side of the limiting block, and the limiting bolt is inserted into the groove.
The running device comprises supporting legs, rollers and a driving device, wherein the upper ends of the supporting legs are symmetrically connected to the two ends of the supporting beams, the rollers are connected to the lower ends of the supporting legs, and the driving device comprises a driving motor and a transmission assembly and drives the rollers to rotate through the transmission assembly.
The upper ends of the supporting legs are respectively hinged with the ends of the supporting beams through upper and lower pin shafts, and can rotate around the upper pin shafts.
The rollers at two ends of the supporting beam are installed through bearings and a rotating shaft.
The driving motor is a stepping motor; the transmission assembly is a chain transmission assembly, a belt transmission assembly or a gear transmission assembly, a driving wheel of the transmission assembly is connected to an output shaft of the driving motor, and a driven wheel of the transmission assembly is connected to the rotating shaft.
According to the invention, when the bottom die is fixed, multi-degree-of-freedom limiting can be realized through the limiting component: the limiting component can tightly prop up the longitudinally moving track along the upward direction of inclination, so that the vertical and horizontal limiting of the bottom die template are realized, and meanwhile, the vertical limiting of the bottom die template is realized through friction force generated after propping up, thereby ensuring the positioning accuracy of the bottom die and improving the prefabrication quality of the beam body. The invention can freely switch between bearing and running states. When the girder body is poured for bearing, the running device is lifted and separated from the top surface of the longitudinal moving track, and the bearing cross beam is contacted with the longitudinal moving track and limited by the limiting component; when the bottom die system needs to be adjusted, the bearing beam is lifted to be separated from the longitudinally moving track, the running device descends to be in contact with the top surface of the longitudinally moving track, and then the running device drives the bearing beam and the bottom die template to longitudinally move, so that self-running is realized, manpower and material resources are saved, and the construction efficiency is improved. When the vehicle is self-propelled, the limiting component plays a role in transverse limiting, and can prevent the deviation of walking.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention.
Fig. 2 is a schematic view of the structure of fig. 1 with the bottom die plate removed.
Fig. 3 is a schematic diagram of an assembly structure of the longitudinally moving rail, the bearing beam and the limiting assembly in fig. 2.
Fig. 4 is a side view of fig. 3 (stop plate and stop bolt not shown).
Fig. 5 is a schematic view of the axial side structure of the bolster of fig. 3.
Fig. 6 is a schematic view of an axial side structure of the connection beam of fig. 3.
Fig. 7 is a schematic axial side structure of the limiting clamp plate in fig. 3.
Fig. 8 is a schematic axial side structure of the stopper in fig. 3.
Fig. 9 is a schematic axial side view of the running gear leg of fig. 4.
Fig. 10 is a schematic longitudinal section of the working state of the present embodiment.
Detailed Description
As shown in fig. 1, the PC track beam bottom die system disclosed in this embodiment includes a longitudinal moving track 1, a bearing cross beam 2, a limit assembly 3, a running device 4, and a bottom die template 5.
As can be seen from fig. 1 and 2, the longitudinal rail 1 has two parallel rails fixed to the pedestal. The longitudinal moving track of the embodiment is made of I-shaped steel sections, and a connecting plate is arranged between the I-shaped steel sections on two sides. Other embodiments can also use section bars with upper flanges, such as channel steel or H-shaped steel, as longitudinal moving tracks.
As can be seen in fig. 1,2 and 3, the load beam 2 includes a supporting beam 21 and a connecting beam 22 which are arranged up and down, and are detachably connected into a whole through bolts and nuts, and bottom surfaces of two ends of the connecting beam 22 are respectively arranged on top surfaces of the corresponding side longitudinal moving rails 1. The bottom die plate 5 is fixed on the top surface of the supporting beam 21, and a plurality of sets of assemblies of the bearing cross beam 2, the limiting component 3 and the running gear 4 can be arranged below the bottom die plate according to the length of the die plate section.
As shown in fig. 5, the two sides of the beam body of the bolster 21 are connected with the connecting rib plates 211.
As shown in fig. 6, reinforcing rib plates are connected to both sides of the beam body of the connecting beam 22, and end connecting plates 221 are also connected to both ends of the beam body.
As can be seen from fig. 3, the limiting assembly 3 comprises a limiting clamping plate 31, a limiting block 32 and a limiting bolt 33, wherein the limiting block 32 is positioned at an outer included angle between an upper wing plate and a web plate of the longitudinally moving track 1, and the limiting bolt 33 obliquely upwards penetrates through the limiting clamping plate 31 and then is inserted into the limiting block 32 to limit.
As can be seen in fig. 3 and 6, the upper end of the limiting clamp plate 31 is fastened to the end connecting plate 221 of the connecting beam 22 by a bolt and nut connection, and the lower end is an inner folded plate. In order to enhance the strength of the limit clamp plate 31, a reinforcing rib 311 is provided at an outer upper portion thereof. In order to ensure the strength of the connecting limit bolts 33, thick nuts 312 are welded at the tail ends of the outer sides of the inner folded plates of the limit clamping plates 31 corresponding to the reinforcing ribs, and the limit bolts 33 are screwed into the thick nuts 312 and then penetrate through the inner folded plates of the limit clamping plates.
As can be seen in fig. 3 and 8, the outer inclined surface of the stopper 32 is provided with a groove into which the stopper bolt 33 is inserted. In this embodiment, the inner side of the stopper 32 is attached to the web plate and the lower side of the upper flange of the longitudinal movement rail 1, the permanent magnet 321 is embedded in the inner side of the stopper 32, and the stopper 32 is adsorbed on the longitudinal movement rail 1 through the permanent magnet 321.
As can be seen in connection with fig. 2, 4 and 9, the running gear 4 comprises a roller 41, a leg 42 and a drive. The supporting legs 42 of this embodiment have two groups of four, each supporting leg is an L-shaped body with an included angle greater than 90 degrees, the upper ends of the long arms of the supporting legs have two hinge holes which are arranged up and down, the upper ends of each group of two supporting legs are respectively hinged with the connecting rib plates 211 on one side of the web end part of the supporting beam 3 through upper and lower pin shafts to form a herringbone structure, and the supporting legs can only rotate around the upper pin shafts. A roller 41 is connected to the short arm of each leg 42. Two rollers on the same side of the web plate of the supporting beam 21 are installed on the same rotating shaft 43, bearings are arranged at the joints of the rotating shaft 43 and the supporting legs, and the bearings are assembled or welded with mounting holes in the supporting legs in an interference mode. Other embodiments can provide only two legs according to practical situations.
As shown in fig. 2, the driving device of the present embodiment is provided with a set including a stepping motor 44, a driving sprocket 45, a driven sprocket 46 and a chain 47, and the stepping motor 44 is installed between the legs 42 on both sides. The driving sprocket is connected to the output shaft of the stepper motor, the driven sprocket is connected to one of the shafts 43, and the driving sprocket and the driven sprocket are driven by a chain 47. Other embodiments may employ belt drives. In the embodiment, the stepping motor is used as a driving motor, the running distance can be adjusted through the numerical control system, the holding torque of the stepping motor can prevent the bottom die system from shaking back and forth, and the system stability is improved. The drive assembly of other embodiments may also be a belt drive assembly or a gear drive assembly.
As shown in fig. 10, when the beam body 6 is poured, the system is in a bearing state. In this state, the lower pin shaft between the upper end of each supporting leg and the supporting beam is pulled out, so that each supporting leg can freely rotate around the upper pin shaft. The bearing cross beam is positioned on the longitudinal moving track, and the load is transmitted to the foundation through the longitudinal moving track and the pedestal. Meanwhile, the limiting bolt of the limiting assembly is tightly propped against the limiting block, the vertical component force and the transverse component force of the limiting bolt enable the upper surface and the side surface of the limiting block to be respectively pressed on the upper wing plate and the web plate of the longitudinally moving track, the transverse displacement and the vertical displacement of the bottom die are limited, the generated friction force of the limiting bolt is used for limiting the longitudinal displacement of the bottom die, the multi-degree-of-freedom limiting is realized, and therefore the pouring quality of the beam body is ensured.
When the bottom die template needs to be longitudinally adjusted in position, the limiting bolts are loosened, the bottom surface of the connecting beam of the bearing beam is not fixedly connected with the longitudinally moving track, the bearing beam is lifted to a certain height by using the jack type lifting device, the supporting legs are downwards rotated under the action of gravity until the rollers contact the top surface of the longitudinally moving track, the lower pin shafts are installed, the supporting legs are fixed in position, and then the lifting device is removed. The load of the bottom die plate is transferred to the running gear because the carrier beam has been disengaged from the longitudinally moving rail. The stepping motor is controlled to work to drive the rotating shaft to rotate, so that the running device moves longitudinally along the bottom die template through the movement of the roller along the longitudinal movement track, and self-running is realized. When the vehicle is self-propelled, the limiting component plays a role in transverse limiting, and can prevent the deviation of walking.
Claims (5)
1. The utility model provides a PC track roof beam die block system which characterized in that:
the device comprises a bottom die template, a longitudinal moving track, a bearing beam, a limiting assembly and a running device; the bottom die template is connected with the top surface of the bearing cross beam;
the longitudinal moving track is of an I-shaped structure and is fixed on the pedestal;
the bearing cross beam is arranged above the longitudinal moving rail and is transversely erected, and comprises a supporting beam and a connecting beam which are integrally connected up and down, wherein the bottom surfaces of the two ends of the connecting beam are respectively arranged on the top surfaces of the corresponding lateral longitudinal moving rails;
Two ends of the bearing beam are symmetrically connected with limiting components, and the limiting components comprise limiting clamping plates, limiting blocks and limiting bolts; the upper end of the limiting clamp plate is connected with the end part of the connecting beam into a whole, the inner side of the lower end is an inclined surface, the limiting block is arranged at an outer included angle between the upper wing plate and the web plate of the longitudinal moving track, the outer side of the limiting block comprises an inclined surface parallel to the inclined surface of the limiting clamp plate, and the limiting bolt obliquely upwards passes through the limiting clamp plate and then tightly abuts against the limiting block;
the limiting assembly can tightly prop against the longitudinal moving rail along the upward inclined direction, and the inner side of the limiting block of the limiting assembly is attached to the web plate and the upper flange of the longitudinal moving rail;
The running device comprises supporting legs, rollers and a driving device, wherein the upper ends of the supporting legs are symmetrically connected to the two ends of the supporting beams, the upper ends of the supporting legs are respectively hinged with the end parts of the supporting beams through upper and lower pin shafts, the supporting legs can rotate around the upper pin shafts, the rollers are connected to the lower ends of the supporting legs, and the driving device comprises a driving motor and a transmission assembly and drives the rollers to rotate through the transmission assembly;
The running device is arranged above the bearing beam corresponding to the longitudinal moving track and can be lifted relative to the bearing beam;
When the girder body is poured, the running device ascends, the bearing cross beam is positioned on the longitudinal moving track, the bearing cross beam is contacted with the longitudinal moving track, load is transmitted to a foundation through the longitudinal moving track and the pedestal, the upper surface and the side surface of the limiting block of the limiting assembly are respectively pressed on the upper wing plate and the web plate of the longitudinal moving track to limit the transverse displacement and the vertical displacement of the bottom die, the generated friction force limits the longitudinal displacement of the bottom die, and the multi-degree-of-freedom limiting is realized, so that the pouring quality of the girder body is ensured;
When the bottom die is adjusted, as no fixed connection exists between the bottom surface of the connecting beam of the bearing beam and the longitudinally moving track, the bearing beam is lifted, the running device descends, the bearing beam is lifted to be separated from the longitudinally moving track surface, the load of the bottom die template is transferred to the running device, the running device can drive the bearing beam and the bottom die template to run along the longitudinally moving track, and the limiting component plays a transverse limiting role when in self-running, so that running deviation can be prevented.
2. The PC rail beam bottom die system of claim 1, wherein: the bearing cross beams are arranged in a plurality of groups along the length direction of the beam body.
3. The PC rail beam bottom die system of claim 1, wherein: the limiting block is adsorbed on the longitudinal moving track through the permanent magnet, a groove is formed in the inclined surface of the outer side of the limiting block, and the limiting bolt is inserted into the groove.
4. The PC rail beam bottom die system of claim 1, wherein: the rollers on the same side of the bearing girder web are installed through a bearing and a rotating shaft.
5. The PC rail beam bottom die system of claim 4, wherein: the driving motor is a stepping motor; the transmission assembly is a chain transmission assembly, a belt transmission assembly or a gear transmission assembly, a driving wheel of the transmission assembly is connected to an output shaft of the driving motor, and a driven wheel of the transmission assembly is connected to the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003015.8A CN108748622B (en) | 2018-08-30 | 2018-08-30 | PC track beam bottom die system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003015.8A CN108748622B (en) | 2018-08-30 | 2018-08-30 | PC track beam bottom die system |
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| Publication Number | Publication Date |
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| CN108748622A CN108748622A (en) | 2018-11-06 |
| CN108748622B true CN108748622B (en) | 2024-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811003015.8A Active CN108748622B (en) | 2018-08-30 | 2018-08-30 | PC track beam bottom die system |
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| CN (1) | CN108748622B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109457622B (en) * | 2018-12-24 | 2024-05-07 | 湖南五新智能科技股份有限公司 | Curve track beam bottom die and application method thereof |
| CN109986063B (en) * | 2019-05-14 | 2023-11-03 | 秦皇岛信越智能装备有限公司 | High-precision low-pressure die changing device |
| CN111823363A (en) * | 2020-06-22 | 2020-10-27 | 广东省建筑工程机械施工有限公司 | Novel precast beam bottom die and construction method thereof |
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| CN206406229U (en) * | 2017-01-19 | 2017-08-15 | 山东平安建筑工业化科技有限公司 | A kind of clear-water concrete hanging plate mould |
| CN108437164A (en) * | 2018-03-12 | 2018-08-24 | 合肥托卡拉图科技有限公司 | A kind of concrete road portable hard shoulder mold and its application method |
| CN209453797U (en) * | 2018-08-30 | 2019-10-01 | 湖南中铁五新钢模有限责任公司 | A kind of PC track beam bottom board system |
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2018
- 2018-08-30 CN CN201811003015.8A patent/CN108748622B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0180937A2 (en) * | 1984-11-03 | 1986-05-14 | Wayss & Freytag Aktiengesellschaft | Shuttering for the series production of reinforced concrete assembly units, in particular for prestressed sleepers of switches |
| CN201913700U (en) * | 2010-12-13 | 2011-08-03 | 湖南中铁五新钢模有限责任公司 | Adjustable internal mold supporting device |
| CN102226326A (en) * | 2011-04-25 | 2011-10-26 | 湖北工业大学 | Stress-relieving device for seamless rails by using vibration method |
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| CN108748622A (en) | 2018-11-06 |
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Country or region after: China 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. Country or region before: China |
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