CN118832703A - Energy-efficient bridge prefabrication structure's apparatus for producing - Google Patents

Abstract

The invention relates to the field of bridge engineering, in particular to a high-efficiency energy-saving production device of a bridge prefabricated structural member, which comprises an outer die; further comprises: the internal mold mechanism is formed by splicing a plurality of internal mold units, each internal mold unit comprises a shell and a supporting component positioned in the shell, the shell is of a trapezoid structure, each side of the trapezoid is composed of two splice plates, and the adjacent splice plates are rotationally connected through a plurality of heavy hinges; when the support assembly supports the shell from the inside and the internal mold is demolded, the support assembly is used for inwards folding the two splice plates on each side of the shell so as to separate from the concrete; and the limiting mechanisms are arranged at two ends of the outer die and used for providing support and limiting for the support assembly from the two ends. When the invention is used for demoulding, the inner support piece is beaten on one side to move, so that the splice plate can be retracted, and is separated from concrete, then the whole internal mold mechanism can be easily taken out, the equipment requirement is not high, and the box girder structure is not damaged due to overlarge friction force.

Description

A highly efficient and energy-saving production device for prefabricated bridge structures

Technical Field

The invention relates to the technical field of bridge engineering, and in particular to a production device for a high-efficiency and energy-saving prefabricated bridge structural component.

Background Art

Prefabricated bridge components refer to bridge beams, columns, piers, slabs and other components that are prefabricated in factories and then transported to construction sites for assembly. The application of prefabricated components can improve project quality, shorten construction periods, reduce costs, reduce environmental impacts, and facilitate the promotion of standardization and industrialization.

A Chinese patent with announcement number CN219255913U discloses a new type of special forming mold for prefabricated bridge beams and slabs. A rotating device is used to rotate and lift or lower the side formwork, which is convenient for prefabricating beams and slabs and removing the side formwork. The L-shaped formwork and support device are used to make the core formwork less likely to deform and leak concrete, and the core formwork is convenient for demolding and disassembly, making it universal.

However, the above-mentioned publicly disclosed scheme has the following shortcomings: the four L-shaped templates are a dispersed structure and need to be fixed separately when in use, which is inconvenient. In addition, the rotating rod needs to be rotated when the structure is demoulded. For shorter box girders, this is not a big problem. However, for the production of very long box girders, it is very inconvenient to realize the rotation of the rotating rod with this structure, because many rotating rods are distributed along the length direction and are all threadedly connected. The operator is required to operate multiple rotating rods synchronously or gradually and in small quantities inside the inner mold. It is extremely difficult to demold the inner mold during the production of long-distance box girders.

Summary of the invention

The purpose of the present invention is to propose a highly efficient and energy-saving production device for prefabricated bridge structures in order to solve the problems in the background technology that the several components of the inner mold are relatively scattered, which are inconvenient to assemble and require additional support, and the inner mold demoulding operation is difficult when producing longer box girders.

The technical solution of the present invention is: a highly efficient and energy-saving production device for prefabricated bridge structures, comprising an outer mold; and further comprising:

The inner mold mechanism is located inside the outer mold. The inner mold mechanism is composed of multiple inner mold units. The inner mold unit includes a shell and a support assembly located inside the shell. The outer part of the shell is a concrete pouring space. The shell is a trapezoidal structure with a larger top and a smaller bottom. Each side of the trapezoid is composed of two splicing plates. The adjacent splicing plates are rotatably connected by multiple heavy-duty hinges. The support assembly supports the shell from the inside. When the inner mold is demoulded, the two splicing plates on each side of the shell are retracted inward by the support assembly to separate from the concrete.

And a limiting mechanism is arranged at both ends of the outer mold to provide support and limiting for the supporting components from both ends.

Preferably, a rounded corner a is provided on one end where two splicing plates on each side of the shell abut against each other, and a rounded corner b is provided on the ends of two splicing plates abutting against adjacent sides of the shell.

Preferably, a waist-shaped hole is provided on the heavy-duty hinge connecting the two splicing plates on each side of the shell, and the heavy-duty hinge is connected to the splicing plates by means of a screw and a nut.

Preferably, the support assembly includes an inner support member, and an adjustment module disposed on the outer surface of the inner support member for expanding and retracting two splicing plates on each side of the shell.

Preferably, the adjustment module includes a connecting rod rotatably connected to the outer surface of the inner support member, a U-shaped frame rotatably connected to the end of the connecting rod, and a slider rotatably connected to the two ends of the U-shaped frame, and a slide rail cooperating with the slider is provided on the inner side of the splicing plate.

Preferably, two fixed plates a are arranged on the outer surface of the inner support member, a support rod a is rotatably arranged between the two fixed plates a, and one end of the connecting rod is connected to the support rod a; two fixed plates b are arranged on the U-shaped frame, a support rod b is rotatably arranged between the two fixed plates b, and the other end of the connecting rod is connected to the support rod b; two fixed plates c are arranged on the slider, a support rod c is rotatably arranged between the two fixed plates c, and the end of the U-shaped frame is connected to the support rod c.

Preferably, the inner support member is covered with an outer support member, and each surface of the outer support member is provided with a strip groove for the connecting rod to pass through.

Preferably, the limiting mechanism includes two supporting platforms fixed on the outside of both ends of the outer mold, a fixing frame a and a fixing frame b respectively arranged on the two supporting platforms, and a supporting seat arranged on the supporting platform, a limiting plate is arranged on the supporting seat, the limiting plate extends into the shell and simultaneously abuts against the outer support member and the inner support member; the fixing frame a abuts against the shell, and the fixing frame b abuts against the outer support member and the shell simultaneously.

Compared with the prior art, the present invention has the following beneficial technical effects: the inner mold mechanism is composed of a plurality of inner mold units spliced together, which is convenient for producing longer box girders, and a plurality of spliced plates are rotatably connected by heavy hinges, so the structure is not dispersed and the operation is faster when in use; when demolding, the spliced plates can be retracted by simply hammering the inner support on one side through the equipment to move it, thereby separating it from the concrete, and then the entire inner mold mechanism can be easily taken out, without high requirements on the equipment, without the need for high-power pulling equipment such as winches, and without damaging the box girder structure due to excessive friction, which helps to ensure the production quality of the box girder.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an embodiment of the present invention;

FIG2 is a schematic cross-sectional view of a portion of the structure of FIG1 ;

FIG3 is a schematic structural diagram of an inner mold mechanism;

FIG4 is a schematic cross-sectional view of a portion of the structure of FIG3 ;

FIG5 is an enlarged schematic diagram of point A in FIG2;

FIG. 6 is an enlarged schematic diagram of point B in FIG. 4 .

Figure numerals: 1. outer mold; 2. inner mold mechanism; 3. splicing plate; 4. heavy-duty hinge; 5. fillet a; 6. fillet b; 7. connecting plate; 8. connecting hole; 9. outer support member; 10. inner support member; 11. strip groove; 12. pull ring; 13. fixing plate a; 14. support rod a; 15. connecting rod; 16. fixing plate b; 17. support rod b; 18. U-shaped frame; 19. fixing plate c; 20. support rod c; 21. slider; 22. slide rail; 23. waist-shaped hole; 24. support platform; 25. fixing frame a; 26. fixing frame b; 27. support seat; 28. limit plate.

DETAILED DESCRIPTION

Embodiment 1, as shown in FIG. 1 to FIG. 3, a highly efficient and energy-saving production device for prefabricated bridge structures proposed by the present invention comprises an outer mold 1, the outer mold 1 comprises a bottom mold and two side molds, the two side molds are assembled with the bottom mold from both sides to form the final outer mold 1, and the external movable support structure of the side mold is not drawn; and further comprises:

The inner mold mechanism 2 is located inside the outer mold 1. The inner mold mechanism 2 is composed of multiple inner mold units. The inner mold unit includes a shell and a support assembly located inside the shell. The outer part of the shell is a concrete pouring space. The shell is a trapezoidal structure with a larger upper part and a smaller lower part. Each side of the trapezoid is composed of two splicing plates 3. Adjacent splicing plates 3 are rotatably connected by multiple heavy-duty hinges 4. The support assembly supports the shell from the inside. When the inner mold is demoulded, the two splicing plates 3 on each side of the shell are retracted inward by the support assembly to separate from the concrete. Multiple connecting plates 7 are arranged at both ends of the splicing plate 3. Connecting holes 8 are arranged on the connecting plates 7. Two adjacent inner mold units are docked and fixed through the connecting plates 7 and the connecting holes 8. During installation, the operator enters the shell to perform the connecting operation.

And the limiting mechanism is arranged at both ends of the outer mold 1, and is used to provide support and limit for the supporting components from both ends.

Embodiment 2, as shown in FIG. 3 and FIG. 6 , the present invention proposes a highly efficient and energy-saving production device for prefabricated bridge structures. Compared with Embodiment 1, this embodiment introduces the relevant detailed structure of demoulding of the splicing plate 3 .

A fillet a5 is provided on one end where two splicing plates 3 on each side of the shell abut against each other, and a fillet b6 is provided on the ends of two splicing plates 3 abutting against adjacent sides of the shell; demolding is usually carried out when the concrete reaches a certain strength but has not yet fully hardened to affect the position of the prestressed pipes and steel bars. This strength is usually called demolding strength, which is sufficient to ensure that the concrete will not crack during the demolding process. The demolding strength is generally 30%-50% of the design strength. By setting the fillet a5, when the concrete is not fully solidified, the rotation and retraction of the two splicing plates 3 on each side of the shell can be successfully completed by squeezing the concrete; the fillet b6 is provided to reduce the friction between the corners of the shell and the concrete.

A waist-shaped hole 23 is set on the heavy hinge 4 connecting the two splicing plates 3 on each side of the shell. The heavy hinge 4 is connected to the splicing plate 3 by a screw nut. The screw nut has a movable range. When the splicing plates 3 are retracted, the combination of squeezing concrete and moving away from each other can further ensure the retraction of the splicing plates 3.

Embodiment 3, as shown in FIG. 4 to FIG. 6 , the present invention proposes a highly efficient and energy-saving production device for prefabricated bridge structures. Compared with embodiment 1, this embodiment introduces the structure of the support assembly in detail.

The support assembly includes an inner support member 10, and an adjustment module arranged on the outer surface of the inner support member 10 for expanding and retracting the two splicing plates 3 on each side of the shell; in an optional embodiment, the inner support member 10 is also a trapezoidal structure with a larger top and a smaller bottom, and is only proportionally scaled relative to the outer shell. An adjustment module is arranged on each surface of the trapezoid of the inner support member 10, and each adjustment module corresponds to each side of the shell. The inner support member 10 is a cavity structure and pull rings 12 are arranged on the inner walls at both ends. The pull rings 12 can be used to push and pull the inner support member 10 to move along the length direction of the outer mold 1.

Furthermore, the adjustment module includes a connecting rod 15 rotatably connected to the outer surface of the inner support member 10, a U-shaped frame 18 rotatably connected to the end of the connecting rod 15, and a slider 21 rotatably connected to the two ends of the U-shaped frame 18, and a slide rail 22 cooperating with the slider 21 is arranged on the inner side surface of the splicing plate 3; the inner support member 10 moves along the length direction of the outer mold 1, moving forward and backward respectively, and when moving forward, it drives the splicing plate 3 to expand outward to form an inner mold shell, and when moving backward, it drives the splicing plate 3 to shrink inward, so as to facilitate the removal of the inner mold.

Furthermore, two fixed plates a13 are arranged on the outer surface of the inner support member 10, a support rod a14 is rotatably arranged between the two fixed plates a13, and one end of the connecting rod 15 is connected to the support rod a14; two fixed plates b16 are arranged on the U-shaped frame 18, a support rod b17 is rotatably arranged between the two fixed plates b16, and the other end of the connecting rod 15 is connected to the support rod b17; two fixed plates c19 are arranged on the slider 21, a support rod c20 is rotatably arranged between the two fixed plates c19, and the end of the U-shaped frame 18 is connected to the support rod c20; when the inner support member 10 moves, it rotates through the connecting rod 15, pulls the U-shaped frame 18 inward through the connecting rod 15, and then drives the splicing plate 3 to be retracted through the slider 21, and during the retraction of the splicing plate 3, the slider 21 slides on the slide rail 22.

Furthermore, the inner support member 10 is covered with an outer support member 9, and each surface of the outer support member 9 is provided with a strip groove 11 for the connecting rod 15 to pass through; the end of the inner support member 10 in the next inner mold unit is inserted into the outer support member 9 and abuts against the previous inner support member 10, so as to facilitate the contact and positioning of multiple inner support members 10 in sequence.

Embodiment 4, as shown in FIG1 , is a highly efficient and energy-saving production device for prefabricated bridge structures proposed by the present invention. Compared with Embodiment 1 or Embodiment 3, this embodiment introduces the structure of the limiting mechanism in detail.

The limiting mechanism includes two support platforms 24 fixed on the outer sides of the two ends of the outer mold 1, a fixing frame a25 and a fixing frame b26 respectively arranged on the two support platforms 24, and a support seat 27 arranged on the support platform 24. A limiting plate 28 is arranged on the support seat 27. The limiting plate 28 extends into the shell and simultaneously abuts against the outer support member 9 and the inner support member 10; the fixing frame a25 abuts against the shell, and the fixing frame b26 abuts against the outer support member 9 and the shell at the same time; when demolding is required, the support seat 27 and the limiting plate 28 are removed, and the inner support member 10 is hammered from the other end to move the inner support member 10 along the length direction of the outer mold 1, and then the splicing plate 3 is driven inward through the adjustment module to separate the splicing plate 3 from the concrete, so as to facilitate the inner mold mechanism 2 to be pulled out.

In summary, when the present invention is used, multiple inner mold units are docked and connected to each other, and then the position of the inner support member 10 is adjusted so that the connecting rod 15 is perpendicular to the outer surface of the inner support member 10. At this time, the splicing plate 3 is expanded outward through the connecting rod 15, the U-shaped frame 18, the slider 21 and the slide rail 22 to form a trapezoidal inner mold shell, and the position of the support platform 24 is adjusted to complete the fixation of the shell, the inner support member 10 and the outer support member 9. It should be noted that one end of the inner support member 10 is suspended, and the fixing plate a13 is pressed against the edge of the strip groove 11 to complete the inner support member 10. Fix it, and then pour the concrete. After the pouring is completed, wait for the set time and demould. When demoulding, remove the support seat 27 and the limit plate 28, and release the limit on one end of the outer support 9. At this time, the inner support 10 is knocked by the equipment to move the inner support 10 toward the suspended end of the outer support 9, and the U-shaped frame 18 is pulled inward by the connecting rod 15, and then the splicing plate 3 is driven inward by the slider 21 to complete the inward retraction of the four sides of the inner mold shell, thereby breaking contact with the concrete, and finally the inner mold mechanism 2 can be easily pulled outward to complete the demoulding of the inner mold.

The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims (8)

1. A highly efficient and energy-saving production device for prefabricated bridge structures, comprising an outer mold (1); characterized in that it also comprises: The inner mold mechanism (2) is located inside the outer mold (1). The inner mold mechanism (2) is composed of a plurality of inner mold units spliced together. The inner mold unit includes a shell and a support assembly located inside the shell. The outer portion of the shell is a concrete pouring space. The shell is a trapezoidal structure with a larger top and a smaller bottom. Each side of the trapezoid is composed of two splicing plates (3). Adjacent splicing plates (3) are rotatably connected via a plurality of heavy-duty hinges (4). The support assembly supports the shell from the inside. When the inner mold is demoulded, the two splicing plates (3) on each side of the shell are retracted inwardly by the support assembly so as to be separated from the concrete. And a limiting mechanism is arranged at both ends of the outer mold (1) and is used to provide support and limiting for the supporting assembly from both ends. 2. The production device for efficient and energy-saving prefabricated bridge structures according to claim 1 is characterized in that a rounded corner a (5) is provided on one end where two splicing plates (3) on each side of the shell abut against each other, and a rounded corner b (6) is provided on the ends of two splicing plates (3) abutting against adjacent sides of the shell. 3. The production device of efficient and energy-saving prefabricated bridge structures according to claim 1 is characterized in that a waist-shaped hole (23) is provided on the heavy hinge (4) connecting the two splicing plates (3) on each side of the shell, and the heavy hinge (4) is connected to the splicing plate (3) by a screw nut. 4. According to the production device of efficient and energy-saving prefabricated bridge structures as described in claim 1, it is characterized in that the support assembly includes an inner support member (10) and an adjustment module arranged on the outer surface of the inner support member (10) for supporting and retracting two splicing plates (3) on each side of the shell. 5. According to the production device of high-efficiency and energy-saving prefabricated bridge structures as described in claim 4, it is characterized in that the adjustment module includes a connecting rod (15) rotatably connected to the outer surface of the inner support member (10), a U-shaped frame (18) rotatably connected to the end of the connecting rod (15), and a slider (21) rotatably connected to the two ends of the U-shaped frame (18), and a slide rail (22) that cooperates with the slider (21) is provided on the inner side surface of the splicing plate (3). 6. According to claim 5, the production device of high-efficiency and energy-saving bridge prefabricated structural parts is characterized in that two fixed plates a (13) are arranged on the outer surface of the inner support member (10), a support rod a (14) is rotatably arranged between the two fixed plates a (13), and one end of the connecting rod (15) is connected to the support rod a (14); two fixed plates b (16) are arranged on the U-shaped frame (18), a support rod b (17) is rotatably arranged between the two fixed plates b (16), and the other end of the connecting rod (15) is connected to the support rod b (17); two fixed plates c (19) are arranged on the slider (21), a support rod c (20) is rotatably arranged between the two fixed plates c (19), and the end of the U-shaped frame (18) is connected to the support rod c (20). 7. The production device of efficient and energy-saving prefabricated bridge structures according to claim 5 is characterized in that the inner support member (10) is covered with an outer support member (9), and each surface of the outer support member (9) is provided with a strip groove (11) for the connecting rod (15) to pass through. 8. According to the production device of high-efficiency and energy-saving prefabricated bridge structures described in claim 7, it is characterized in that the limiting mechanism includes two supporting platforms (24) fixed on the outside of the two ends of the outer mold (1), a fixing frame a (25) and a fixing frame b (26) respectively arranged on the two supporting platforms (24), and a supporting seat (27) arranged on the supporting platform (24), and a limiting plate (28) is arranged on the supporting seat (27), and the limiting plate (28) extends into the shell and simultaneously abuts the outer support member (9) and the inner support member (10); the fixing frame a (25) abuts the shell, and the fixing frame b (26) abuts the outer support member (9) and the shell at the same time.