CN210850737U - Precast beam quick detach type line production steel form - Google Patents
Precast beam quick detach type line production steel form Download PDFInfo
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- CN210850737U CN210850737U CN201921346850.1U CN201921346850U CN210850737U CN 210850737 U CN210850737 U CN 210850737U CN 201921346850 U CN201921346850 U CN 201921346850U CN 210850737 U CN210850737 U CN 210850737U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 161
- 239000010959 steel Substances 0.000 title claims abstract description 161
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 230000003028 elevating effect Effects 0.000 claims abstract description 16
- 238000009826 distribution Methods 0.000 claims abstract description 14
- 238000005096 rolling process Methods 0.000 claims abstract description 7
- 238000009415 formwork Methods 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 5
- 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 description 6
- 239000000463 material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a precast beam quick detach type line production steel form, vertical glide machanism including the mirror image distribution, vertical glide machanism top one side all is equipped with horizontal glide machanism, all is equipped with vertical elevating system on the horizontal glide machanism, all is equipped with precast beam template support steelframe on the vertical elevating system, is equipped with finish rolling screw-thread steel on the precast beam template support steelframe that the mirror image distributes jointly to the pull rod, is equipped with the precast beam between vertical glide machanism, horizontal glide machanism, vertical elevating system and the precast beam template support steelframe that the mirror image distributes. The utility model discloses the whole template of precast beam quick detach type flow process steel form installs and tears the process open and all adopt conventional electric mechanization, save a large amount of artificial very big improvement production efficiency and security in the time, single set of template can satisfy the template demand of a whole pedestals of leading to long guide rail simultaneously, saves the acquisition cost of template, and the template wholeness is good, need not repeated dismouting after the beginning construction, and the work progress is compact, quick.
Description
Technical Field
The utility model relates to a construction tool field specifically is a precast beam quick detach type line production steel form.
Background
The precast beam is a beam which is prefabricated in a factory and then is transported to a construction site to be installed and fixed according to the design requirement, the time from the construction and the use of a beam manufacturing field to the manufacturing, transportation and erection of all box beams is more than one year, in order to ensure the quality of the box beams and the safe and high-speed passing of trains on the box beams, raw materials such as reinforcing steel bars, cement, sand and the like used for manufacturing the box beams have strict quality requirements, most of the existing precast beam templates are gantry cranes matched with manual assembling closing and closing templates, the closing and closing processes need a large amount of manpower and occupy machines, and the time is long. Continuous dismouting also has great influence to the life of template itself, especially the closure of concatenation department, and to this kind of condition, a precast beam quick detach type line production steel form now provides.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a precast beam quick detach type line production steel form, change traditional precast beam and adopt the pin-connected panel template concept, at first with the precast beam external mold repacking to carry out the mechanized template of die stripping through bottom pivot integral rotation, again with external mold template system on can longitudinally slide the track roof beam car, be equipped with the conveyer belt that has the transverse rolling function on the roof beam car, the conveyer belt is carried out the rigid coupling with the external mold system bottom, realize precast beam side form lateral shifting, quick mechanical closed template; the longitudinal guide rails are arranged to slide to the next prefabricated pedestal quickly, the prefabrication requirement of the whole longitudinal pedestal can be met by only one set of prefabricated streamlined template, the prefabricated pedestal is completely mechanized, the side mold is transformed, the track and the electric wheel are additionally arranged, the whole cost is low, the production efficiency is high, and the mechanization is realized.
The purpose of the utility model can be realized by the following technical scheme:
the utility model provides a precast beam quick detach type line production steel form, includes the vertical glide machanism of mirror image distribution, vertical glide machanism top one side all is equipped with horizontal glide machanism, all is equipped with vertical elevating system on the horizontal glide machanism, all is equipped with precast beam template support steelframe on the vertical elevating system, is equipped with finish rolling screw-thread steel pair pull rod on the precast beam template support steelframe of mirror image distribution jointly, is equipped with the precast beam between the vertical glide machanism, horizontal glide machanism, vertical elevating system and the precast beam template support steelframe of mirror image distribution.
Furthermore, a first outer auxiliary supporting steel plate, a second outer auxiliary supporting steel plate and a third outer auxiliary supporting steel plate are further arranged in the precast beam formwork supporting steel frame.
Furthermore, still be equipped with the first interior auxiliary steel board that axial array distributes in the precast beam, be equipped with the interior auxiliary steel board of second between the first interior auxiliary steel board, still be equipped with oblique auxiliary stay steel board between the first interior auxiliary steel board, still be equipped with the interior auxiliary steel board of third in the first interior auxiliary steel board.
Further, the longitudinal sliding mechanism comprises bottom I-shaped steels distributed in an array mode, supporting blocks are arranged on the bottom I-shaped steels, supporting I-shaped steels are arranged between the supporting blocks, first I-shaped steels are jointly arranged on the supporting blocks, oblique supporting blocks connected with the supporting blocks are arranged on one sides of the first I-shaped steels, a first hydraulic cylinder fixing block is arranged at one end of each first I-shaped steel, a first hydraulic cylinder fixing hole is formed in each first hydraulic cylinder fixing block, a first hydraulic cylinder is arranged on each first hydraulic cylinder fixing block, a first telescopic rod is arranged on each first hydraulic cylinder, a first connecting head is arranged at the top end of each first telescopic rod, each first connecting head is provided with a first mounting hole.
Further, horizontal glide machanism includes first fixed plate, and first fixed plate lower extreme is equipped with first slider, is equipped with the telescopic link groove on the first slider, and first fixed plate lower extreme still is equipped with the second connector, is equipped with the second mounting hole on the second connector, and first fixed plate upper end is equipped with array distribution's last supporting block, goes up the supporting block and is equipped with the second fixed plate jointly.
Further, vertical elevating system is including fixing the third fixed plate on the second fixed plate, be equipped with array distribution's second pneumatic cylinder on the third fixed plate, be equipped with the second telescopic link on the second pneumatic cylinder, be equipped with the third connector on the second telescopic link, the fourth connector is connected to the third connector, be equipped with the third mounting hole on the third connector, be equipped with the fourth mounting hole on the fourth connector, still be equipped with connection platform on the fourth connector, all be equipped with the second I-steel on the connection platform, be equipped with the third I-steel between the second I-steel jointly.
Further, the precast beam formwork support steel frame comprises a fourth I-shaped steel which is vertically arranged, a balancing weight is arranged on one side of the fourth I-shaped steel, the balancing weight is fixed on the fourth I-shaped steel through a connecting block, a fifth I-shaped steel is arranged on one side of the fourth I-shaped steel, a sixth I-shaped steel is arranged on the fifth I-shaped steel, a seventh I-shaped steel is arranged on the sixth I-shaped steel, an inclined support steel frame is arranged on the seventh I-shaped steel, and an angle steel is further arranged on the seventh I-shaped steel.
Furthermore, the inclined support steel frame comprises short I-shaped steels distributed in an array manner, the short I-shaped steels are provided with connecting holes distributed in an array manner, the short I-shaped steels are connected through the connecting holes and steel wires, inclined I-shaped steels are further arranged between the two short I-shaped steels, an inclined support block is further arranged on one of the short I-shaped steels, and a support steel block is arranged at the lower end of each inclined I-shaped steel.
Further, finish rolling screw-thread steel is to pull rod includes the reinforcing bar, and the reinforcing bar both ends all are equipped with the screw thread end, are equipped with anti-skidding gasket and nut on the screw thread end.
Further, precast beam includes the precast beam body, and the precast beam body lower extreme is equipped with the bottom of array distribution and places the steel billet, and the steel billet is fixed on supporting the base station, and the support base station is fixed on high strength cement ground.
The utility model has the advantages that:
1. the utility model relates to a quick-dismantling type line production steel template of a precast beam, which is quick and mechanized in the process of installing and removing the template; by reforming the side mold and adding the track and the electric wheel, the whole set of cost is low and the production efficiency is high;
2. the utility model adopts the bottom rotary closed template mode, and does not need the gantry crane assembly to manually carry out complex demoulding procedures;
3. the utility model discloses precast beam quick detach type line production steel form adopts the horizontal conveyer belt mechanization to break away from the beam piece that is prefabricated, and the process is safe, fast;
4. the utility model discloses precast beam quick detach type line production steel form uses the longitudinal rail to carry out the vertical full length slide, and the conversion of prefabricating the pedestal is very convenient, rapid;
5. the whole template mounting and dismounting process of the precast beam quick-dismounting type line production steel template of the utility model adopts conventional electric mechanization, thereby saving a large amount of labor, greatly improving the production efficiency and safety, simultaneously meeting the template requirements of all pedestals of a full-length guide rail by a single template, and saving the purchasing cost of the template;
6. the utility model discloses the template wholeness is good, need not repeated dismouting after beginning to be under construction, and the work progress is compact, quick, and the process mechanization does not need the manual work almost, and production efficiency is high.
Drawings
The present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of a steel formwork part of the rapid disassembly type line production of the precast beam of the present invention;
FIG. 2 is a schematic structural view of the steel formwork part of the rapid disassembly type line production of the precast beam of the present invention;
FIG. 3 is a schematic view of a part of the steel formwork of the rapid disassembly type line production of the precast beam of the present invention;
FIG. 4 is a schematic view of the structure of the supporting steel frame of the precast beam formwork of the present invention;
fig. 5 is a schematic structural view of the longitudinal sliding mechanism of the present invention;
fig. 6 is a schematic view of the vertical lifting mechanism of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
The utility model provides a precast beam quick detach type line production steel form, vertical glide machanism 1 including the mirror image distribution, as shown in fig. 1, fig. 2, fig. 3 shows, 1 top one side of vertical glide machanism all is equipped with horizontal glide machanism 2, all be equipped with vertical elevating system 3 on the horizontal glide machanism 2, all be equipped with precast beam template support steelframe 4 on the vertical elevating system 3, be equipped with finish rolling screw-thread steel on the precast beam template support steelframe 4 of mirror image distribution jointly and to pull rod 5, the vertical glide machanism 1 of mirror image distribution, horizontal glide machanism 2, be equipped with precast beam 6 between vertical elevating system 3 and the precast beam template support steelframe 4.
A first outer auxiliary supporting steel plate 7, a second outer auxiliary supporting steel plate 71 and a third outer auxiliary supporting steel plate 72 are further arranged in the precast beam formwork supporting steel frame 4.
Still be equipped with the first interior supplementary steel sheet 8 of axial array distribution in the precast beam 6, as shown in fig. 2, be equipped with supplementary steel sheet 81 in the second between the supplementary steel sheet 8 in the first, still be equipped with oblique supplementary supporting steel sheet 82 between the supplementary steel sheet 8 in the first, still be equipped with supplementary steel sheet 83 in the third in the supplementary steel sheet 8 in the first.
The longitudinal sliding mechanism 1 comprises bottom i-beams 11 distributed in an array, as shown in fig. 5, the bottom i-beams 11 are respectively provided with supporting blocks 111, supporting i-beams 112 are arranged between the supporting blocks 111, the supporting blocks 111 are provided with first i-beams 12 together, one side of each first i-beam 12 is provided with an inclined supporting block 13 connected with the supporting block 111, one end of each first i-beam 12 is provided with a first hydraulic cylinder fixing block 14, the first hydraulic cylinder fixing block 14 is provided with a first hydraulic cylinder fixing hole 141, the first hydraulic cylinder fixing block 14 is provided with a first hydraulic cylinder 15, the first hydraulic cylinder 15 is provided with a first telescopic rod 151, the top end of the first telescopic rod 151 is provided with a first connector 152, the first connector 152 is provided with a first mounting hole 153.
The transverse sliding mechanism 2 comprises a first fixing plate 21, as shown in fig. 1, a first sliding block 22 is arranged at the lower end of the first fixing plate 21, a telescopic rod groove 23 is formed in the first sliding block 22, a second connecting head 24 is further arranged at the lower end of the first fixing plate 21, a second mounting hole 25 is formed in the second connecting head 24, upper supporting blocks 26 distributed in an array mode are arranged at the upper end of the first fixing plate 21, and a second fixing plate 27 is jointly arranged on the upper supporting blocks 26.
The vertical lifting mechanism 3 comprises a third fixing plate 31 fixed on the second fixing plate 27, as shown in fig. 6, second hydraulic cylinders 32 distributed in an array manner are arranged on the third fixing plate 31, second telescopic rods 321 are arranged on the second hydraulic cylinders 32, third connectors 322 are arranged on the second telescopic rods 321, the third connectors 322 are connected with fourth connectors 33, third mounting holes 323 are arranged on the third connectors 322, fourth mounting holes 331 are arranged on the fourth connectors 33, connecting platforms 332 are further arranged on the fourth connectors 33, second i-beams 34 are arranged on the connecting platforms 332, and third i-beams 35 are arranged between the second i-beams 34.
The precast beam formwork support steel frame 4 comprises a vertically arranged fourth I-shaped steel 41, as shown in fig. 4, a balancing weight 42 is arranged on one side of the fourth I-shaped steel 41, the balancing weight 42 is fixed on the fourth I-shaped steel 41 through a connecting block 421, a fifth I-shaped steel 43 is arranged on one side of the fourth I-shaped steel 41, a sixth I-shaped steel 44 is arranged on the fifth I-shaped steel 43, a seventh I-shaped steel 441 is arranged on the sixth I-shaped steel 44, an inclined support steel frame 45 is arranged on the seventh I-shaped steel 441, and an angle steel 442 is further arranged on the seventh I-shaped steel 441.
The inclined support steel frame 45 comprises short I-shaped steels 451 distributed in an array mode, as shown in fig. 4, connecting holes 453 distributed in an array mode are formed in the short I-shaped steels 451, the short I-shaped steels 451 are connected with steel wires through the connecting holes 453, inclined I-shaped steels 454 are further arranged between the two short I-shaped steels 451, an inclined support block 456 is further arranged on one short I-shaped steel 451, and a support steel block 457 is arranged at the lower end of each inclined I-shaped steel 454.
The finish-rolled deformed steel bar counter-pull rod 5 comprises a steel bar 51, as shown in fig. 1, both ends of the steel bar 51 are provided with threaded ends 52, and the threaded ends 52 are provided with anti-slip gaskets 53 and nuts 54.
The precast beam 6 comprises a precast beam body 63, as shown in fig. 1, the lower end of the precast beam body 63 is provided with steel blocks 64 which are distributed in an array manner and placed at the bottom, the steel blocks 64 are fixed on a support base 62, and the support base 62 is fixed on a high-strength cement ground 61.
During the use, assemble vertical glide machanism 1, horizontal glide machanism 2 and vertical elevating system 3, welding precast beam template support steelframe 4, carry out and assemble vertical glide machanism 1 at horizontal glide machanism 2, horizontal glide machanism 2 is at vertical elevating system 3, take one's place to the compound die and pour the position, make the template draw-and-fix through finish rolling screw-thread steel counter-pull rod 5, carry out concrete placement, after pouring the completion, reverse order form removal, pass through vertical glide machanism 1 next pedestal with whole template system, repeat the above-mentioned step and carry out the precast beam on the next pedestal and pour.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a precast beam quick detach type line production steel form, vertical glide machanism (1) including the mirror image distribution, a serial communication port, vertical glide machanism (1) top one side all is equipped with horizontal glide machanism (2), all is equipped with vertical elevating system (3) on horizontal glide machanism (2), all is equipped with precast beam template support steelframe (4) on vertical elevating system (3), be equipped with finish rolling screw-thread steel on the precast beam template support steelframe (4) of mirror image distribution jointly and to pull rod (5), vertical glide machanism (1) of mirror image distribution, horizontal glide machanism (2), vertical elevating system (3) and precast beam template support steelframe (4) between be equipped with precast beam (6).
2. The precast beam rapid disassembly type line production steel template as claimed in claim 1, wherein a first outer auxiliary supporting steel plate (7), a second outer auxiliary supporting steel plate (71) and a third outer auxiliary supporting steel plate (72) are further arranged in the precast beam template supporting steel frame (4).
3. The quick-release type flow production steel formwork for the precast beam according to claim 1, wherein the precast beam (6) is further provided with first inner auxiliary steel plates (8) distributed in an axial array manner, a second inner auxiliary steel plate (81) is arranged between the first inner auxiliary steel plates (8), an inclined auxiliary supporting steel plate (82) is further arranged between the first inner auxiliary steel plates (8), and a third inner auxiliary steel plate (83) is further arranged in the first inner auxiliary steel plate (8).
4. The quick-release type line production steel formwork of the precast beam according to claim 1, wherein the longitudinal sliding mechanism (1) comprises bottom I-beams (11) distributed in an array, supporting blocks (111) are arranged on the bottom I-beams (11), supporting I-beams (112) are arranged between the supporting blocks (111), first I-beams (12) are jointly arranged on the supporting blocks (111), an inclined supporting block (13) connected with the supporting blocks (111) is arranged on one side of each first I-beam (12), a first hydraulic cylinder fixing block (14) is arranged at one end of each first I-beam (12), a first hydraulic cylinder fixing hole (141) is arranged on each first hydraulic cylinder fixing block (14), a first hydraulic cylinder (15) is arranged on each first hydraulic cylinder (15), a first telescopic rod (151) is arranged on each first telescopic rod (151), a first connecting head (152) is arranged at the top end of each first telescopic rod (151), the first connector (152) is provided with a first mounting hole (153).
5. The precast beam quick-release type line production steel template as claimed in claim 1, wherein the transverse sliding mechanism (2) comprises a first fixing plate (21), a first slider (22) is arranged at the lower end of the first fixing plate (21), a telescopic rod groove (23) is arranged on the first slider (22), a second connector (24) is further arranged at the lower end of the first fixing plate (21), a second mounting hole (25) is arranged on the second connector (24), upper support blocks (26) distributed in an array manner are arranged at the upper end of the first fixing plate (21), and a second fixing plate (27) is jointly arranged on the upper support blocks (26).
6. The precast beam quick-release type line production steel formwork of claim 1, vertical elevating system (3) is including fixing third fixed plate (31) on second fixed plate (27), be equipped with second pneumatic cylinder (32) that the array distributes on third fixed plate (31), be equipped with second telescopic link (321) on second pneumatic cylinder (32), be equipped with third connector (322) on second telescopic link (321), fourth connector (33) is connected in third connector (322), be equipped with third mounting hole (323) on third connector (322), be equipped with fourth mounting hole (331) on fourth connector (33), still be equipped with connection platform (332) on fourth connector (33), all be equipped with second I-steel (34) on connection platform (332), be equipped with third I-steel (35) between second I-steel (34) jointly.
7. The precast beam quick-release type flow production steel template as claimed in claim 1, wherein the precast beam template support steel frame (4) comprises a vertically arranged fourth I-shaped steel (41), a counterweight (42) is arranged on one side of the fourth I-shaped steel (41), the counterweight (42) is fixed on the fourth I-shaped steel (41) through a connecting block (421), a fifth I-shaped steel (43) is arranged on one side of the fourth I-shaped steel (41), a sixth I-shaped steel (44) is arranged on the fifth I-shaped steel (43), a seventh I-shaped steel (441) is arranged on the sixth I-shaped steel (44), an inclined support steel frame (45) is arranged on the seventh I-shaped steel (441), and an angle steel (442) is further arranged on the seventh I-shaped steel (441).
8. The precast beam quick-release type flow steel formwork as claimed in claim 7, wherein the inclined support steel frame (45) comprises short I-shaped steels (451) distributed in an array manner, the short I-shaped steels (451) are provided with connecting holes (453) distributed in an array manner, the short I-shaped steels (451) are connected through connecting wires (453), an inclined I-shaped steel (454) is further arranged between the two short I-shaped steels (451), one of the short I-shaped steels (451) is further provided with an inclined support block (456), and a support steel block (457) is arranged at the lower end of the inclined I-shaped steel (454).
9. The precast beam quick-release type line production steel template as claimed in claim 1, wherein the finish rolled deformed steel bar counter-pull rod (5) comprises a steel bar (51), both ends of the steel bar (51) are provided with threaded ends (52), and the threaded ends (52) are provided with anti-skid gaskets (53) and nuts (54).
10. The precast beam rapid disassembly type line production steel template as claimed in claim 1, wherein the precast beam (6) comprises a precast beam body (63), the lower end of the precast beam body (63) is provided with bottom placement steel blocks (64) distributed in an array manner, the steel blocks (64) are fixed on a support base platform (62), and the support base platform (62) is fixed on a high-strength cement ground (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921346850.1U CN210850737U (en) | 2019-08-19 | 2019-08-19 | Precast beam quick detach type line production steel form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921346850.1U CN210850737U (en) | 2019-08-19 | 2019-08-19 | Precast beam quick detach type line production steel form |
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| Publication Number | Publication Date |
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| CN210850737U true CN210850737U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921346850.1U Expired - Fee Related CN210850737U (en) | 2019-08-19 | 2019-08-19 | Precast beam quick detach type line production steel form |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110394886A (en) * | 2019-08-19 | 2019-11-01 | 中交一公局第四工程有限公司 | A kind of precast beam type quick detaching continuous productive process steel form |
-
2019
- 2019-08-19 CN CN201921346850.1U patent/CN210850737U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110394886A (en) * | 2019-08-19 | 2019-11-01 | 中交一公局第四工程有限公司 | A kind of precast beam type quick detaching continuous productive process steel form |
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Granted publication date: 20200626 |
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| CF01 | Termination of patent right due to non-payment of annual fee |