UHPC (Ultra High Performance Concrete) mold shell forming mold of fabricated concrete prefabricated SW column

Abstract

The utility model discloses a UHPC (Ultra High Performance Concrete) mould shell forming mould of an assembly type concrete prefabricated SW column, which comprises a bottom mould, two outer mould plates and an inner mould, the two outer mould plates are detachably arranged on the bottom mould, the inner mould is placed in a space surrounded by the bottom mould and the two outer mould plates, and the inner mould is arranged on the bottom mould. A space defined by the bottom die, the two outer die plates and the inner die is a die cavity, the inner die comprises a foldable inner die frame and a driving assembly connected with the inner die frame, and the driving assembly is used for driving the inner die frame to contract inwards or expand outwards. And the production quality and the production efficiency of the prefabricated UHPC mold shell are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled building engineering, in particular to a UHPC shell forming mold for an assembled concrete prefabricated SW column. Background Art

[0002] Prefabricated reinforced concrete structural systems have the advantages of high efficiency, economy, and environmental protection, and are widely used in the construction of industrial and civil buildings. SW (Sandwich) structure refers to a prefabricated concrete composite plate component composed of concrete and steel bars as a formwork that does not need to be dismantled, and then installed on site and poured with concrete at one time. Prefabricated SW structure is a prefabricated concrete structure obtained by stacking different materials in stages. The main products include prefabricated SW columns, prefabricated SW floor slabs, prefabricated SW beams and other structural components. The prefabricated cavity UHPC column shell of the prefabricated concrete prefabricated SW column is made of lightweight and high-strength UHPC material, which makes the prefabricated SW column have technical advantages such as light weight for lifting and transportation, high structural integrity, fast and convenient construction, and installation without formwork. After the cavity prefabricated SW column is installed on site, ordinary concrete is cast inside, the beam-column and beam-slab connection has high integrity, and the node performance is consistent with the cast-in-place concrete structure. Therefore, the prefabricated concrete prefabricated SW column is a prefabricated concrete prefabricated column product with strong market competitiveness.

[0003] UHPC material is a cement-based concrete material with many advantages such as energy saving and environmental protection, light weight and high strength, good fluidity, easy construction and excellent durability. UHPC material is very suitable for building components or building structures in civil engineering with high durability requirements, high lifting and transportation requirements, high requirements for low carbon energy saving and environmental protection, and high construction period requirements. Therefore, UHPC is very suitable as the prefabricated outer layer of prefabricated concrete SW columns. The prefabricated thin-layer formwork material does not need to be disassembled.

[0004] However, the prefabricated outer UHPC formwork of the prefabricated concrete SW column needs to meet the basic requirements of being thin and airtight. Therefore, the closed and thin UHPC formwork has great difficulties in prefabrication production. The traditional outer UHPC column formwork is made by four-sided concrete in four steps. Not only is the construction efficiency very low, but the joints between different surfaces are difficult to meet the connection requirements. Utility Model Content

[0005] In view of the defects of the above prior art, the utility model provides a UHPC formwork forming mold for an assembled concrete prefabricated SW column to improve the production quality and production efficiency of the prefabricated UHPC formwork.

[0006] The utility model is implemented by the following technical solutions:

[0007] A UHPC formwork forming mold for an assembled concrete prefabricated SW column comprises a bottom mold, two outer molds and an inner mold, wherein the two outer molds are detachably mounted on the bottom mold, and the inner mold is placed in a space surrounded by the bottom mold and the two outer molds, wherein the space surrounded by the bottom mold, the two outer molds and the inner mold is a mold cavity, and the inner mold comprises a foldable inner mold frame and a driving assembly connected to the inner mold frame, wherein the driving assembly is used to drive the inner mold frame to contract inward or expand outward.

[0008] Furthermore, the inner mold frame includes two relatively arranged first inner molds and two relatively arranged second inner molds, the two first inner molds and the two second inner molds enclose a square hollow structure, the two first inner molds are respectively arranged relatively to the two outer molds, the two first inner molds each include a first plate and a second plate hinged to each other, the end of the first plate away from the second plate is hingedly connected to the second inner mold at the top, the end of the second plate away from the first plate is hingedly connected to the second inner mold at the bottom, and the driving assembly is used to drive the first plate and the second plate to shrink inward or expand outward.

[0009] Further, the driving assembly includes a support member, which is symmetrically arranged on the inner sides of the two first inner mold plates, and the support member is extended along the length direction of the inner mold frame. The support member is provided with a support slide along its extension direction, and the two support slides are symmetrically slidably connected with a connecting rod, and one end of the connecting rod away from the support slide is hinged on a screw sleeve, and the screw sleeve is threadedly connected with a screw, and one end of the screw passes through the inner mold frame. The rotation of the screw can drive the two first inner mold plates to fold or flatten.

[0010] Furthermore, the diameter of the screw is greater than 20 mm.

[0011] Furthermore, it also includes an adjustment rod, which is used to pull the tops of the two outer templates together, and two positioning nuts are respectively provided at the two ends of the adjustment rod.

[0012] Furthermore, the two outer templates are symmetrically provided with a plurality of pulling holes, and the pulling holes are embedded with rubber plugs.

[0013] Furthermore, the rubber stopper is provided with a handle, and a buckle is provided on the outer side of the outer template, and the buckle is used to clamp the handle.

[0014] Furthermore, a magnetic suction cup is provided on the bottom mold, and the magnetic suction cup abuts against the outer side of the outer mold plate.

[0015] Furthermore, a rectangular rubber sleeve is provided between the bottom side of the outer mold plate and the bottom mold.

[0016] Furthermore, the mold shell is pre-embedded with a plug welding embedded part, and the plug welding embedded part is provided with a plug welding hole.

[0017] Compared with the prior art, the beneficial effects of the present invention include at least:

[0018] The outer mold plate of the utility model is fixed on the bottom mold in a detachable manner, so that the mold can produce prefabricated UHPC mold shell products with different outer mold sizes. The inner mold adopts a design in which a driving component drives the inner mold frame to shrink inward or expand outward, making mold installation and finished product demoulding more convenient and efficient, simplifying the process, improving production efficiency, saving labor costs, and greatly improving the production quality and production speed of prefabricated UHPC mold shells. The outer shell of the assembled non-disassembly mold shell column is realized through the molding mold, solving a series of problems caused by the thin thickness of the outer shell and difficulty in supporting the mold, making it convenient for mold installation and disassembly after casting, improving casting efficiency and casting quality, and meeting the use standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of a UHPC formwork forming mold for an assembled concrete prefabricated SW column according to an embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the UHPC shell forming mold of the assembled concrete prefabricated SW column of the embodiment of the utility model after pouring concrete.

[0021] Figure 3 This is a front view of the inner mold of an embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram of the inner mold shrinking inwards in an embodiment of the utility model;

[0023] Figure 5 It is a schematic diagram of the inner mold in the expanded state of the embodiment of the utility model;

[0024] Figure 6 It is a schematic diagram of the inner mold contraction state of an embodiment of the utility model;

[0025] In the figure: 1. bottom mold; 2. outer mold; 21. pulling holes; 3. inner mold; 31. first inner mold; 311. first plate; 312. second plate; 32. second inner mold; 33. support; 34. connecting rod; 35. screw sleeve; 36. screw; 37. middle rotating shaft; 38. top rotating shaft; 4. mold cavity; 5. adjustment rod; 6. positioning nut; 7. magnetic suction cup; 8. mold shell; 9. plug welding embedded parts. DETAILED DESCRIPTION

[0026] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0027] The words expressing positions and directions described in the present utility model are all explained by taking the drawings as examples, but they can be changed as needed, and all the changes are included in the protection scope of the present utility model.

[0028] like Figure 1-6 As shown, the utility model provides an assembled concrete prefabricated SW column UHPC formwork forming mold, including a bottom mold 1, two outer molds 2 and an inner mold 3, the two outer molds 2 are detachably mounted on the bottom mold 1, the inner mold 3 is placed in a space surrounded by the bottom mold 1 and the two outer molds 2, the space surrounded by the bottom mold 1, the two outer molds 2 and the inner mold 3 is a mold cavity 4, the inner mold 3 includes a foldable inner mold frame and a driving assembly connected to the inner mold frame, the driving assembly is used to drive the inner mold frame to shrink inward or expand outward.

[0029] In this embodiment, the inner mold 3 is first placed on the bottom mold 1, and then the two outer mold plates 2 are placed on the bottom mold 1 and fixed. The inner mold frame is then driven to expand outward by the driving assembly. When the inner mold frame is fully expanded, the driving assembly is stopped. At this time, the inner mold 3 is installed in place, and concrete can be poured into the mold cavity 4 to form a mold shell 8. When the strength of the poured concrete reaches the requirement, the outer mold plate 2 is first removed, and then the inner mold frame is driven to shrink inward by the driving assembly, so that the inner mold frame is separated from the mold shell 8 so as to remove the mold shell 8.

[0030] The outer mold plate 2 of the utility model is fixed on the bottom mold 1 in a detachable manner, so that the mold can produce prefabricated UHPC mold shell 8 products with different outer mold sizes. The inner mold 3 adopts a design in which a driving component drives the inner mold frame to shrink inward or expand outward, making the mold installation and demolding of the finished product more convenient and efficient, simplifying the process, improving production efficiency, and saving labor costs. It can provide a new production line for the production of the outer shell of the UHPC non-disassembly mold shell column, so that the production quality and production speed of the prefabricated UHPC mold shell 8 are greatly improved. The outer shell of the assembled non-disassembly mold shell column is realized by the molding mold, which solves a series of problems caused by the thin thickness of the outer shell and the difficulty in supporting the mold, making it convenient for the installation of the mold and the disassembly after casting and molding, improving the casting efficiency and casting quality, and meeting the use standards.

[0031] As a preferred embodiment, the inner mold frame includes two relatively arranged first inner molds 31 and two relatively arranged second inner molds 32. The two first inner molds 31 and the two second inner molds 32 enclose a square hollow structure. The two first inner molds 31 are respectively arranged opposite to the two outer molds 2. The two first inner molds 31 include a first plate 311 and a second plate 312 that are hinged to each other. The end of the first plate 311 away from the second plate 312 is hingedly connected to the second inner mold 32 at the top, and the end of the second plate 312 away from the first plate 311 is hingedly connected to the second inner mold 32 at the bottom. The driving assembly is used to drive the first plate 311 and the second plate 312 to shrink inward or expand outward.

[0032] In this embodiment, the first plate 311 and the second plate 312 are hingedly connected by a middle rotating shaft 37, and the middle rotating shaft 37 can coordinate the deformation of the screw 36. The end of the first plate 311 away from the second plate 312 is hingedly connected to the top second inner mold 32 through the top rotating shaft 38, and the end of the second plate 312 away from the first plate 311 is hingedly connected to the bottom second inner mold 32 through the top rotating shaft 38. The top rotating shafts 38 at the four corners are used to reduce the cross-section of the inner mold frame for demolding after prefabrication is completed, thereby minimizing damage to the inner mold shell 8.

[0033] Initially, the first plate 311 and the second plate 312 are relatively flattened, thereby forming a square hollow structure between the second inner template 32, thereby providing support for the inner side of the concrete during the concrete pouring process. When the concrete is solidified and formed, a columnar structure formwork 8 can be formed. At this time, the first plate 311 and the second plate 312 are driven by the driving assembly to fold inward, so that a V-shaped structure is formed between the first plate 311 and the second plate 312, so that the first template can be separated from the two inner walls of the formwork 8, thereby smoothly realizing the removal of the formwork 8.

[0034] As a preferred embodiment, the driving assembly includes a support member 33, and the support member 33 is symmetrically arranged on the inner side of the two first inner mold plates 31, and the support member 33 is extended along the length direction of the inner mold frame. The support member 33 is provided with a support slide groove along its extension direction, and the two support slide grooves are symmetrically slidably connected with a connecting rod 34, and one end of the connecting rod 34 away from the support slide groove is hinged on a screw sleeve 35, and the screw sleeve 35 is threadedly connected with a screw 36, and one end of the screw 36 passes through the inner mold frame. The rotation of the screw 36 can drive the two first inner mold plates 31 to fold or flatten.

[0035] In this embodiment, the screw rod 36 is rotated, and the screw rod 36 drives the screw sleeve 35 to move along the length direction of the screw rod 36, and the screw sleeve 35 drives the connecting rod 34 to move, so that the angle between the connecting rod 34 and the first inner template 31 becomes larger, thereby pushing the first inner template 31 to extend outward, and when the first inner template 31 is fully unfolded, the rotation of the screw rod 36 is stopped. At this time, the inner mold 3 is installed in place, and concrete can be poured into the mold cavity 4; when the strength of the poured concrete reaches the requirement, the outer template 2 is first removed, and then the screw rod 36 is rotated in the opposite direction. The screw 36 drives the screw sleeve 35 to move in the opposite direction along the length direction of the screw rod 36, and drives the connecting rod 34 to move in the supporting slide groove, so that the angle between the connecting rod 34 and the first inner template 31 becomes smaller, thereby driving the first inner template 31 to shrink and fold inward, so that the first inner template 31 is separated from the mold shell 8, thereby realizing the demolding of the mold shell 8. Through the above-mentioned structural design, the inner mold 3 can be quickly demoulded, thereby having the advantages of good removal effect and high removal efficiency of the inner mold 3, so that the production quality and production speed of the prefabricated UHPC shell 8 are greatly improved.

[0036] As a preferred embodiment, the diameter of the screw 36 is greater than 20 mm. The diameter of the screw 36 of this embodiment is required to be greater than 20 mm, which is an optimization result obtained based on the length of the column and the manual operation force control experiment. A screw 36 that is too thin will result in too small bending stiffness, and the thread may get stuck during manual operation, resulting in inoperability. A screw 36 that is too thick will reduce the sensitivity of the operation, and less rotation may cause a large expansion and contraction deformation of the inner template, which will make it difficult to accurately position the inner template.

[0037] As a preferred embodiment, it also includes an adjustment tie rod 5, which is used to pull the tops of the two outer formworks 2 together, and two positioning nuts 6 are respectively provided at the two ends of the adjustment tie rod 5. In this embodiment, the top position of the outer formwork 2 can be accurately positioned by combining the two positioning nuts 6 at the ends of the adjustment tie rod 5 to prevent the outer formwork 2 from tilting during the pouring process. The pulling effect of the adjustment tie rod 5 is conducive to improving the quality and accuracy of the prefabricated components.

[0038] As a preferred embodiment, the two outer templates 2 are symmetrically provided with a plurality of pulling holes 21, and rubber plugs are buried in the pulling holes 21. The pulling holes 21 of this embodiment are arranged in parallel along the outer template 2, and the positions of the pulling holes 21 are related to information such as the column section and height. The rubber plugs are used to plug the pulling holes 21, and the rubber material can effectively support the inner mold 3 to prevent leakage.

[0039] Specifically, the rubber plug is provided with a handle, and a buckle is provided on the outer side of the outer template 2, and the buckle is used to clamp the handle. By providing the handle, it is convenient to pull out the rubber plug, and the buckle is used to prevent the handle from falling off due to vibration during pouring UHPC.

[0040] As a preferred embodiment, a magnetic suction cup 7 is provided on the bottom mold 1, and the magnetic suction cup 7 abuts against the outer side of the outer mold plate 2. By providing the magnetic suction cup 7, the outer mold plate 2 is placed to move.

[0041] As a preferred embodiment, a rectangular rubber sleeve is provided between the bottom side of the outer formwork 2 and the bottom formwork 1. The function of the rectangular rubber sleeve is to prevent leakage when pouring UHPC. Traditionally, a round rubber strip is used, but the round rubber strip is easy to slide off, while the rectangular rubber sleeve is accurately positioned and is not easy to slide off. Moreover, when the outer formwork 2 is supported, the rectangular rubber sleeve is flattened and is not easy to see.

[0042] As a preferred embodiment, the mold shell 8 is pre-embedded with a plug welding embedded part 9, and the plug welding embedded part 9 is provided with a plug welding hole. In this embodiment, when the mold shell 8 is combined with the built-in steel cage and shipped out, in order to maintain the integrity of the mold shell 8 and the built-in steel cage, a plug welding process is used for connection. Therefore, when prefabricating the mold shell 8, it is necessary to first bury the plug welding embedded part 9 and retain the plug welding hole so as to be connected with the steel cage later.

[0043] Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the utility model. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the utility model without departing from the principles and purpose of the utility model. All of these changes should fall within the scope of protection of the claims of the utility model.

Claims

1. A UHPC shell forming mold for prefabricated concrete SW columns, characterized in that: The invention comprises a bottom mold (1), two outer mold plates (2) and an inner mold (3), wherein the two outer mold plates (2) are detachably mounted on the bottom mold (1), and the inner mold (3) is placed in a space surrounded by the bottom mold (1) and the two outer mold plates (2). The space surrounded by the bottom mold (1), the two outer mold plates (2) and the inner mold (3) is a mold cavity (4). The inner mold (3) comprises a foldable inner mold frame and a driving component connected to the inner mold frame, wherein the driving component is used to drive the inner mold frame to retract inward or expand outward.

2. The UHPC formwork forming mold for the prefabricated concrete SW column according to claim 1 is characterized in that: The inner mold frame comprises two first inner mold plates (31) and two second inner mold plates (32) which are arranged opposite to each other. The two first inner mold plates (31) and the two second inner mold plates (32) are enclosed to form a square hollow structure. The two first inner mold plates (31) are arranged opposite to the two outer mold plates (2) respectively. The two first inner mold plates (31) each comprise a first plate (311) and a second plate (312) which are hinged to each other. One end of the first plate (311) which is away from the second plate (312) is hingedly connected to the second inner mold plate (32) at the top. One end of the second plate (312) which is away from the first plate (311) is hingedly connected to the second inner mold plate (32) at the bottom. The driving component is used to drive the first plate (311) and the second plate (312) to retract inward or expand outward.

3. The UHPC formwork forming mold for the prefabricated concrete SW column according to claim 2, characterized in that: The driving assembly comprises a support member (33), the support member (33) is symmetrically arranged on the inner side of the two first inner mold plates (31), the support member (33) is extended along the length direction of the inner mold frame, the support member (33) is provided with a support slide groove along its extension direction, the two support slide grooves are symmetrically slidably connected with a connecting rod (34), one end of the connecting rod (34) away from the support slide groove is hinged on a screw sleeve (35), the screw sleeve (35) is threadedly connected with a screw rod (36), one end of the screw rod (36) passes through the inner mold frame, and the rotation of the screw rod (36) can drive the two first inner mold plates (31) to fold or flatten.

4. The UHPC formwork forming mold for the assembled concrete prefabricated SW column according to claim 3 is characterized in that: The screw (36) has a diameter of 20 mm.

5. The UHPC formwork forming mold for the assembled concrete prefabricated SW column according to claim 1, characterized in that: It also includes an adjustment rod (5), which is used to connect the tops of the two outer templates (2) by pulling them together, and two positioning nuts (6) are respectively provided at the two ends of the adjustment rod (5).

6. The UHPC formwork forming mold for the assembled concrete prefabricated SW column according to claim 1, characterized in that: The two outer templates (2) are respectively symmetrically provided with a plurality of pulling holes (21), and the pulling holes (21) are embedded with rubber plugs.

7. The UHPC formwork forming mold for the assembled concrete prefabricated SW column according to claim 6, characterized in that: The rubber stopper is provided with a handle, and a buckle is provided on the outside of the outer template (2), and the buckle is used to clamp the handle.

8. The UHPC formwork forming mold for the assembled concrete prefabricated SW column according to claim 1, characterized in that: The bottom mold (1) is provided with a magnetic suction cup (7), and the magnetic suction cup (7) abuts against the outer side of the outer mold plate (2).

9. The UHPC formwork forming mold for the assembled concrete prefabricated SW column according to claim 1, characterized in that: A rectangular rubber sleeve is provided between the bottom side of the outer mold plate (2) and the bottom mold (1).

10. The UHPC formwork forming mold for prefabricated concrete SW columns according to claim 1, characterized in that: The mold shell (8) is pre-buried with a plug welding embedded part (9), and the plug welding embedded part (9) is provided with a plug welding hole.

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