Telescopic formwork for construction of wet joint of large-section prefabricated bent cap

Abstract

The present application relates to the technical field of building construction, and provides a telescopic formwork for large-section prefabricated bent cap wet joint construction, which comprises a bottom plate, two supporting mechanisms, two cross assemblies, two first pressing assemblies and two second pressing assemblies, wherein the supporting mechanism comprises a lower transverse main beam, an upper transverse main beam and a first connecting assembly and a second connecting assembly; the lower transverse main beam is in contact with the bottom of the bottom plate; the upper transverse main beam is in contact with the top of the large-section prefabricated bent cap; the first connecting assembly comprises a connecting block, a first vertical plate, a first threaded column and a first nut; the second connecting assembly comprises a second vertical plate, a second threaded column and a second nut; the cross assembly comprises a first connecting rod and a second connecting rod; the first side plate and the second side plate are respectively in contact with the sides of the two large-section prefabricated bent caps; and the first pressing assembly and the second pressing assembly are used for pressing the large-section prefabricated bent cap. The telescopic formwork for large-section prefabricated bent cap wet joint construction can be recycled, the cost is reduced, and the use is convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, in particular to a telescopic formwork for construction of wet joints between large-section prefabricated bent caps. BACKGROUND

[0002] In the process of constructing wet joints between large-section prefabricated bent caps, the traditional construction process generally uses the method of erecting steel pipe columns + upper Bailey beams to pour the wet joints. Although this method can complete the pouring of the wet joints, the erection of the support system will consume a lot of manpower and material resources, and since the installation elevation of the bent caps and the original ground elevation are not the same, the length of the steel pipe columns required for each span of the bent caps is not the same, which cannot be recycled, or other measures for raising the height need to be taken. This will inevitably increase the instability factors at the raised connection and cause a large amount of material waste. SUMMARY

[0003] In view of the defects in the prior art, the purpose of the present application is to provide a telescopic formwork for construction of wet joints between large-section prefabricated bent caps, which can be recycled and reduce costs, and is convenient to use.

[0004] The present application provides a telescopic formwork for construction of wet joints between large-section prefabricated bent caps, which is arranged between two large-section prefabricated bent caps and comprises:

[0005] a bottom plate;

[0006] two support mechanisms, each of which is arranged on one of the two large-section prefabricated bent caps, the support mechanism comprising a lower transverse main beam, an upper transverse main beam, a first connecting assembly and a second connecting assembly, the lower transverse main beam being in contact with the bottom of the bottom plate, the upper transverse main beam being in contact with the top of the large-section prefabricated bent cap, the first connecting assembly and the second connecting assembly being arranged on the two sides of the large-section prefabricated bent cap respectively, the first connecting assembly comprising a connecting block, a first vertical plate, a first threaded column and a first nut, the connecting block being arranged on one side of the upper transverse main beam and being hinged to the upper transverse main beam, the first vertical plate being fixedly installed on the lower transverse main beam, the first threaded column being longitudinally through the connecting block and being fixedly connected to the first vertical plate, the first nut being sleeved on the first threaded column, the second connecting assembly comprising a second vertical plate, a second threaded column and a second nut, the second vertical plate being fixedly installed on the lower transverse main beam, the second threaded column being longitudinally through the upper transverse main beam and being fixedly connected to the second vertical plate, the second nut being sleeved on the second threaded column;

[0007] Two cross components are respectively disposed above and below the large-section precast cap beam. Each cross component includes a first connecting rod and a second connecting rod. The middle part of the first connecting rod is hinged to the middle part of the second connecting rod. The two ends of the first connecting rod are respectively hinged to the two upper transverse main beams. The two ends of the second connecting rod are respectively hinged to the two upper transverse main beams.

[0008] A first side plate and a second side plate, the first side plate and the second side plate respectively contacting the sides of the two large-section precast cap beams, forming a casting space between the first side plate, the second side plate, the bottom plate and the two large-section precast cap beams; and

[0009] Two first pressing components and two second pressing components are respectively disposed on two first upright plates. The first pressing components are used to apply inward pressure to the first side plate. The two second pressing components are respectively disposed on two second upright plates. The second pressing components are used to apply inward pressure to the second side plate.

[0010] Furthermore, the first pressing assembly includes a first rotating rod and a first pressure plate. The first rotating rod passes through the first upright plate laterally and is threadedly connected to the first upright plate. The first pressure plate is disposed at the inner end of the first rotating rod and is rotatably connected to the first rotating rod.

[0011] The second pressing assembly includes a second rotating rod and a second pressure plate. The second rotating rod passes through the second upright plate laterally and is threadedly connected to the second upright plate. The second pressure plate is disposed at the inner end of the second rotating rod and is rotatably connected to the second rotating rod.

[0012] Furthermore, a first handle is fixedly installed at the outer end of the first rotating rod, and a second handle is fixedly installed at the outer end of the second rotating rod.

[0013] Furthermore, the first side plate has a first limiting groove adapted to the first pressure plate, and the second side plate has a second limiting groove adapted to the second pressure plate.

[0014] Furthermore, both the first pressure plate and the second pressure plate are cylindrical structures.

[0015] Furthermore, the connecting block has a guide groove, and the upper transverse main beam has a slot;

[0016] A plug-in assembly is provided between the connecting block and the upper transverse main beam. The plug-in assembly includes a slider, a spring, and a pull plate. The slider is disposed in the guide groove and slides in contact with the inner wall of the guide groove. The slider is adapted to the slot. The spring causes the slider to have an outward tendency. The pull plate is fixedly installed on the slider.

[0017] Furthermore, each end of the lower transverse main beam is fixedly equipped with a locking block, and the base plate has a locking groove adapted to the locking block. Beneficial effects

[0018] 1. This invention provides a telescopic formwork for wet joint construction of large-section precast cap beams, enabling the pouring of wet joints in large-section precast cap beams. After the pouring operation is completed, the formwork can be quickly disassembled and reused. This eliminates the complex process of erecting scaffolds required for traditional wet joint construction, significantly improving construction efficiency. It also avoids the traditional method of using a steel pipe column + Bailey beam formwork system followed by concrete pouring for wet joint construction of large-section precast cap beams, saving material waste and greatly improving construction safety. This provides a better method for wet joint construction of large-section precast cap beams, enabling reuse, reducing costs, and minimizing construction safety hazards.

[0019] 2. The present invention provides a telescopic lifting formwork for wet joint construction of large-section precast cap beams. Under the action of the cross components, the lifting formwork can be folded up to reduce its volume. This allows it to be quickly unfolded before the pouring operation begins for easy installation, and can be quickly opened after the pouring operation is completed for easy removal, thus making the lifting formwork more convenient to use. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention from a first perspective;

[0021] Figure 2 for Figure 1 Enlarged structural diagram of section A in the middle;

[0022] Figure 3 This is a three-dimensional structural diagram of the present invention from a second perspective;

[0023] Figure 4 This is a top view of the structure of the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the base plate and the lower transverse main beam.

[0025] Reference numerals: 10-Large cross-section precast cap beam, 11-U-shaped reinforcement, 12-Base plate, 13-Card block, 14-Card slot, 20-Support mechanism, 21-Lower transverse main beam, 22-Upper transverse main beam, 23-Slot, 30-Cross assembly, 31-First connecting rod, 32-Second connecting rod, 40-First side plate, 41-First limiting groove, 50-Second side plate, 51-Second limiting groove, 60-First pressing assembly, 61-First rotating rod, 62-First pressing... Plate, 63-First handle, 70-Second pressing assembly, 71-Second rotating rod, 72-Second pressure plate, 73-Second handle, 80-First connecting assembly, 81-Connecting block, 82-First upright plate, 83-First threaded post, 84-First nut, 85-Guide groove, 90-Second connecting assembly, 91-Second upright plate, 92-Second threaded post, 93-Second nut, 100-Plug-in assembly, 101-Slider, 102-Spring, 103-Pull plate. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0027] In this application, unless otherwise expressly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] In the description of this application, it should be understood that the terms "longitudinal", "horizontal", "level", "top", "bottom", "upper", "lower", "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0029] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0030] like Figures 1-5As shown, this invention provides a telescopic lifting formwork for wet joint construction of large-section precast cap beams. It is installed between two large-section precast cap beams 10. U-shaped reinforcing bars 11 are fixedly installed on the inner end faces of the precast cap beams 10. The U-shaped reinforcing bars 11 on the two large-section precast cap beams 10 are arranged side-by-side in a one-to-one correspondence. The above content is all prior art, and the specific structure will not be described in detail here. This invention includes a support mechanism 20, a cross assembly 30, a first side plate 40, a second side plate 50, a first pressing assembly 60, and a second pressing assembly 70.

[0031] There are two support mechanisms 20, which are respectively installed on two large-section precast cap beams 10. Each support mechanism 20 includes a lower transverse main beam 21, an upper transverse main beam 22, a first connecting component 80, and a second connecting component 90. The lower transverse main beam 21 contacts the bottom of the base plate 12. The upper transverse main beam 22 is located directly above the lower transverse main beam 21 and contacts the top of the large-section precast cap beam 10. The upper transverse main beam 22 has a first through hole running longitudinally through it. The first connecting component 80 and the second connecting component 90 are respectively installed on both sides of the large-section precast cap beam 10.

[0032] The first connecting assembly 80 includes a connecting block 81, a first upright plate 82, a first threaded post 83, and a first nut 84. The connecting block 81 is disposed on one side of the upper transverse main beam 22 and hinged to the first end of the upper transverse main beam 22. A second through hole is formed in the connecting block 81. The first upright plate 82 is fixedly mounted on the lower transverse main beam 21. The first threaded post 83 passes longitudinally through the first through hole in the connecting block 81 and is fixedly connected to the first upright plate 82. The first nut 84 is sleeved on the first threaded post 83 and is used to lock the connecting block 81.

[0033] The second connecting assembly 90 includes a second upright plate 91, a second threaded post 92, and a second nut 93. The second upright plate 91 is fixedly mounted on the lower transverse main beam 21. The second threaded post 92 passes longitudinally through a first through hole on the upper transverse main beam 22, and is fixedly connected to the second upright plate 91. The diameter of the first through hole is larger than the diameter of the second threaded post 92. The second nut 93 is sleeved on the second threaded post 92 and is used to lock the second end of the upper transverse main beam 22.

[0034] There are two cross components 30, which are respectively positioned above and below the large-section precast cap beam 10. Each cross component 30 includes a first connecting rod 31 and a second connecting rod 32. The middle portion of the first connecting rod 31 is hinged to the middle portion of the second connecting rod 32. Both ends of the first connecting rod 31 are hinged to two upper transverse main beams 22, respectively. Both ends of the second connecting rod 32 are also hinged to two upper transverse main beams 22, respectively.

[0035] The first side plate 40 and the second side plate 50 respectively contact the sides of the two large-section precast cap beams 10, and a casting space is formed between the first side plate 40, the second side plate 50, the bottom plate 12 and the two large-section precast cap beams 10.

[0036] There are two first pressing components 60 and two second pressing components 70. The two first pressing components 60 are respectively disposed on the two first upright plates 82, and the first pressing components 60 are used to apply inward pressure to the first side plate 40. The two second pressing components 70 are respectively disposed on the two second upright plates 91, and the second pressing components 70 are used to apply inward pressure to the second side plate 50.

[0037] In the initial state, the first side plate 40 and the second side plate 50 are separate from the entire lifting formwork.

[0038] The specific installation process is as follows:

[0039] The first step is for the workers to pull the two upper transverse main beams 22 closer together, and the two lower transverse main beams 21 will also move closer at the same time. At this time, the angle between the first connecting rod 31 and the second connecting rod 32, and the angle between the third connecting rod and the fourth connecting rod will become smaller, and the overall volume of the suspended formwork will become smaller.

[0040] The second step involves the workers passing the formwork through the gap between the two large-section precast cap beams 10, and then pulling the two upper transverse main beams 22 outwards. This causes the two lower transverse main beams 21 to move away from each other. At this point, the angle between the first connecting rod 31 and the second connecting rod 32, and the angle between the third connecting rod and the fourth connecting rod, will increase, and the overall volume of the formwork will increase until the two upper transverse main beams 22 contact the tops of the two large-section precast cap beams 10 respectively.

[0041] Third, the workers place the base plate 12 on top of the two lower transverse main beams 21. Then, using a lifting device, the two lower transverse main beams 21 are lifted upwards until the base plate 12 is in close contact with the bottom of the two large-section precast cap beams 10. Next, the workers tighten the first nut 84 and the second nut 93 until the two upper transverse main beams 22 press against the top of the two large-section precast cap beams 10, and then remove the lifting device.

[0042] In the fourth step, the workers bring the first side plate 40 and the second side plate 50 into contact with the sides of the two large-section precast cap beams 10, respectively. Then, they control the first pressing component 60 and the second pressing component 70 to activate them, pressing the first side plate 40 and the second side plate 50 tightly against the sides of the large-section precast cap beams 10. This creates a pouring space between the first side plate 40, the second side plate 50, the two large-section precast cap beams 10, and the base plate 12.

[0043] The fifth step is to pour concrete into the pouring space and allow it to cool for a certain period of time so that the concrete reaches the required strength.

[0044] Step 6: After the pouring operation is completed, the workers unscrew the second nut 93, flip the second ends of the two upper transverse main beams 22 upwards, and then pull them downwards to remove the formwork.

[0045] This suspended formwork enables the wet joint pouring of large-section precast cap beam 10. After the pouring operation is completed, the suspended formwork can be quickly disassembled and reused. This eliminates the complex process of erecting scaffolding required for traditional wet joint construction, significantly improving construction efficiency. It also avoids the traditional method of using a steel pipe column + Bailey beam formwork system followed by concrete pouring for wet joint construction of large-section precast cap beam 10, saving material waste and greatly improving construction safety. This provides a better method for wet joint construction of large-section precast cap beam 10, enabling reuse, reducing costs, and minimizing construction safety hazards.

[0046] With the help of the cross component 30, this application can be folded up to reduce its volume, so that it can be quickly unfolded before the pouring operation begins for easy installation, and the second end of the upper transverse main beam 22 can be quickly opened after the pouring operation is completed for easy removal, thus making this formwork more convenient to use.

[0047] In one embodiment, the first pressing assembly 60 includes a first rotating rod 61 and a first pressure plate 62. The first rotating rod 61 passes laterally through a first upright plate 82 and is threadedly connected to the first upright plate 82. The first pressure plate 62 is disposed at the inner end of the first rotating rod 61 and is rotatably connected to the first rotating rod 61.

[0048] The second pressing assembly 70 includes a second rotating rod 71 and a second pressure plate 72. The second rotating rod 71 passes through the second upright plate 91 laterally and is threadedly connected to the second upright plate 91. The second pressure plate 72 is disposed at the inner end of the second rotating rod 71 and is rotatably connected to the second rotating rod 71.

[0049] When it is necessary to press the first side plate 40 and the second side plate 50 together, the operator can control the first rotating rod 61 and the second rotating rod 71 to rotate. Since the first rotating rod 61 is threadedly connected to the first upright plate 82 and the second rotating rod 71 is threadedly connected to the second upright plate 91, the first pressure plate 62 and the second pressure plate 72 will move inward until the first side plate 40 and the second side plate 50 are pressed against the side of the large cross-section precast cap beam 10. Then the operator can release the first rotating rod 61 and the second rotating rod 71.

[0050] In one embodiment, a first handle 63 is fixedly installed on the outer end of the first rotating rod 61, and a second handle 73 is fixedly installed on the outer end of the second rotating rod 71, so as to facilitate the operator to control the rotation of the first rotating rod 61 and the second rotating rod 71.

[0051] In one embodiment, the first side plate 40 has a first limiting groove 41 adapted to the first pressure plate 62, and the second side plate 50 has a second limiting groove 5 adapted to the second pressure plate 72.

[0052] When the first pressure plate 62 and the second pressure plate 72 are in close contact with the side of the large-section precast cap beam 10, the first pressure plate 62 is in perfect engagement with the first limiting groove 41, and the second pressure plate 72 is in perfect engagement with the second limiting groove 5, thereby preventing relative movement in the horizontal direction between the first pressure plate 62 and the first side plate 40, and between the second pressure plate 72 and the second side plate 50, further improving the stability of this lifting formwork.

[0053] In one embodiment, both the first pressure plate 62 and the second pressure plate 72 are cylindrical structures.

[0054] In one embodiment, the side wall of the connecting block 81 has an inwardly extending guide groove 85, and a guide rail is fixedly installed on the inner wall of the guide groove 85. The upper transverse main beam 22 has a slot 23.

[0055] A plug-in assembly 100 is provided between the connecting block 81 and the upper transverse main beam 22. The plug-in assembly 100 includes a slider 101, a spring 102, and a pull plate 103. The slider 101 is disposed within the guide groove 85 and slides in contact with the guide rail. The slider 101 is adapted to the slot 23. The spring 102 is disposed within the guide groove 85. The first end of the spring 102 is fixedly connected to the slider 101, and the second end of the spring 102 is fixedly connected to the inner wall of the guide groove 85. The spring 102 causes the slider 101 to have an outward tendency. The pull plate 103 is fixedly mounted on the slider 101.

[0056] In the initial state, the slider 101 is inserted into the slot 23, thereby connecting the connecting block 81 and the upper transverse main beam 22 into a whole. In this way, when the workers tighten the first nut 84 and the second nut 93, the pressure can be better transmitted to the upper transverse main beam 22, thereby pressing the top of the large-section precast cap beam 10.

[0057] After the pouring operation is completed, the workers pull the pull plate 103 outward to make the slider 101 leave the slot 23, unscrew the second nut 93, flip the second ends of the two upper transverse main beams 22 upward, and then pull them downward to remove the formwork.

[0058] In one embodiment, two ends of the lower transverse main beam 21 are respectively fixedly installed with locking blocks 13, and the bottom plate 12 has a locking groove 14 adapted to the locking blocks 13.

[0059] When the base plate 12 is placed on top of the two lower transverse main beams 21, the locking block 13 and the locking groove 14 cooperate together to avoid relative movement between the two and further improve the stability of the lifting formwork.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0061] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A telescopic form for large cross-section precast cap beam wet joint construction, arranged between two large cross-section precast cap beams, characterized in that: The utility model provides a prefabricated large section cover beam pouring device, which comprises a bottom plate, two support mechanisms, two cross assemblies, a first side plate and a second side plate, and two first pressing assemblies and two second pressing assemblies. The two support mechanisms are respectively arranged on two large section prefabricated cover beams, and each support mechanism comprises a lower transverse main beam, an upper transverse main beam, a first connecting assembly and a second connecting assembly. The lower transverse main beam is in contact with the bottom of the bottom plate. The upper transverse main beam is in contact with the top of the large section prefabricated cover beam. The first connecting assembly and the second connecting assembly are arranged on the two sides of the large section prefabricated cover beam. The first connecting assembly comprises a connecting block, a first vertical plate, a first threaded column and a first nut. The connecting block is arranged on one side of the upper transverse main beam and is hinged to the upper transverse main beam.

2. The telescopic formwork according to claim 1, characterized in that: The first vertical plate is fixedly installed on the lower transverse main beam. The first threaded column penetrates through the connecting block in the longitudinal direction and is fixedly connected to the first vertical plate.

3. The telescopic formwork according to claim 2, characterized in that: The first nut is sleeved on the first threaded column.

4. The telescopic formwork according to claim 2, characterized in that: The second connecting assembly comprises a second vertical plate, a second threaded column and a second nut.

5. The telescopic formwork according to claim 2, characterized in that: The second vertical plate is fixedly installed on the lower transverse main beam. The second threaded column penetrates through the upper transverse main beam in the longitudinal direction and is fixedly connected to the second vertical plate. The second nut is sleeved on the second threaded column. The two cross assemblies are arranged above and below the large section prefabricated cover beam. The cross assembly comprises a first connecting rod and a second connecting rod. The middle part of the first connecting rod is hinged to the middle part of the second connecting rod. The two ends of the first connecting rod are respectively hinged to two upper transverse main beams. The two ends of the second connecting rod are respectively hinged to two upper transverse main beams. The first side plate and the second side plate are respectively in contact with the side surfaces of the two large section prefabricated cover beams. The pouring space is formed between the first side plate, the second side plate, the bottom plate and the two large section prefabricated cover beams. The two first pressing assemblies are respectively arranged on two first vertical plates. The first pressing assembly is used for applying inward pressure to the first side plate. The two second pressing assemblies are respectively arranged on two second vertical plates. The second pressing assembly is used for applying inward pressure to the second side plate. The first pressing assembly comprises a first rotating rod and a first pressing plate. The first rotating rod penetrates through the first vertical plate in the transverse direction and is threadedly connected to the first vertical plate. The first pressing plate is arranged at the inner end of the first rotating rod and is rotationally connected to the first rotating rod. The second pressing assembly comprises a second rotating rod and a second pressing plate. The second rotating rod penetrates through the second vertical plate in the transverse direction and is threadedly connected to the second vertical plate. The second pressing plate is arranged at the inner end of the second rotating rod and is rotationally connected to the second rotating rod. The outer end of the first rotating rod is fixedly installed with a first handle. The outer end of the second rotating rod is fixedly installed with a second handle. The first limiting groove corresponding to the first pressing plate is formed in the first side plate. The second limiting groove corresponding to the second pressing plate is formed in the second side plate. The first pressing plate and the second pressing plate are both cylindrical structures.

6. The telescopic formwork according to claim 1, characterized in that: The connecting block is provided with a guide slot, and the upper transverse main beam is provided with an insertion slot; The connecting block and the upper transverse main beam are provided with an insertion assembly, the insertion assembly comprises a sliding block, a spring and a pull plate, the sliding block is arranged in the guide slot and in sliding contact with the inner wall of the guide slot, the sliding block is adapted to the insertion slot, the spring enables the sliding block to have a tendency to move outward, and the pull plate is fixedly installed on the sliding block.

7. The telescopic formwork according to claim 1, characterized in that: The lower transverse main beam is fixedly provided with a clamping block at each end, and the bottom plate is provided with a clamping slot adapted to the clamping block.

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