Connecting structure of closed inner mold and closed inner mold

Abstract

A connecting structure of a closed inner mold comprises a fixing part and a fastening assembly. The fixed part is fixedly connected below the upper end part of the first side upper die and is provided with an extending end facing the second side upper die; one end of the fastening assembly is connected with the second side upper die, the other end of the fastening assembly is detachably connected to the extending end of the fixing part, and the fastening direction of the fastening assembly is obliquely arranged so as to provide horizontal and vertical pulling force at the same time to enable the first side upper die and the second side upper die to be close and attached, and the top working faces are flush. When slab staggering and a gap exist at the splicing position of the panels of the first side upper die and the second side upper die, the connecting structure is fastened, so that the first side upper die and the second side upper die can be leveled and tensioned, and the slab staggering and the gap at the splicing position are eliminated. When the inner mold is opened or contracted, only the fastening assembly needs to be loosened, the fixing part and the fastening assembly are reserved at the upper end of the first side upper mold and the upper end of the second side upper mold respectively, other parts of the inner mold are not interfered, and therefore the purpose of efficiently assembling and disassembling the inner mold is achieved. The utility model further provides the closed inner mold.

Description

Technical Field

[0001] This utility model relates to the field of box girder internal mold technology, and in particular to a connection structure and a closed internal mold. Background Technology

[0002] Box girders are used in the construction of bridges and highways. As one of the important structures in bridge engineering, reinforced concrete box girders are often prefabricated using production lines to facilitate construction.

[0003] The box girder is a hollow box-shaped structure, and during precast casting, bottom molds, inner molds, and outer molds are used to form the precast box girder body. For example... Figure 1 As shown, the existing closed inner mold includes a first side mold assembly 10a, a second side mold assembly 20a, a trajectory control mechanism, and a telescopic assembly. The trajectory control mechanism is used to connect the first side mold assembly 10a and the second side mold assembly 20a into a whole, and can make the two close or open relative to each other along a set trajectory. It has the advantages of stable structure, large internal cavity operating space, simple construction and economic practicality, which significantly improves the construction efficiency of box girder.

[0004] However, in the existing patented closed inner mold, during the process of closing or opening the first side upper mold 101a and the second side upper mold 201a, and the first side lower mold 102a and the second side lower mold 202a according to the preset motion trajectory, the hydraulic cylinder action in the telescopic component cannot fully meet the precise positioning. This easily causes the rotation action of the first side upper mold 101a and the second side upper mold 201a, as well as the first side lower mold 102a and the second side lower mold 202a, to not reach the ideal state. As a result, the horizontal and vertical panel splices of the first side upper mold 101a and the second side upper mold 201a, as well as the first side lower mold 102a and the second side lower mold 202a, are misaligned or there are gaps on the left and right sides. This cannot meet the requirements for template use and affects the forming quality of the box girder. Utility Model Content

[0005] In view of this, the present invention provides a connection structure for a closed inner mold and a closed inner mold. When the rotation and erection of the first or second upper mold is not in place, resulting in lateral and / or vertical misalignment and gaps at the panel splicing of the first and second upper molds, the fastening connection structure can play a role in lateral and / or vertical leveling and tightening of the first and second upper molds, prompting the first and second upper molds to adjust each other, eliminating misalignment and gaps at the panel splicing of the first and second upper molds, and establishing a reliable connection, thereby meeting the requirements for template use.

[0006] A connection structure for a closed inner mold, the closed inner mold comprising a first side inner mold and a second side inner mold disposed opposite to each other, the first side inner mold comprising a first side lower mold and a first side upper mold hinged to each other, the second side inner mold comprising a second side lower mold and a second side upper mold hinged to each other, the splicing seam between the first side upper mold and the second side upper mold being disposed along an inclined direction and the first side upper mold being located below the splicing seam; the connection structure comprising a fixing part and a fastening assembly;

[0007] The fixing part is fixedly connected to the lower part of the upper end of the first side upper mold, and the fixing part has a protruding end facing the second side upper mold; one end of the fastening component is connected to the second side upper mold, and the other end is detachably connected to the protruding end of the fixing part. The fastening direction of the fastening component is obliquely arranged to provide both horizontal and vertical tension to make the first side upper mold and the second side upper mold close together and flush with the top working surface.

[0008] In one embodiment, the protruding end includes a fastening surface and a pressing surface. The fastening surface is located below the protruding end and perpendicular to the tensile direction of the fastening assembly. The fastening surface has a U-shaped opening facing the second side upper mold. The fastening assembly includes a bolt and a locking nut. One end of the bolt is connected to the second side upper mold, and the bolt's thread is obliquely inserted into the U-shaped opening. The locking nut is installed on the fastening surface side. The pressing surface is located above the protruding end. When the locking nut is tightened, the pressing surface can conform to the second side upper mold, thereby achieving vertical positioning of the first side upper mold and the second side upper mold.

[0009] In one embodiment, the fixing part includes two spaced-apart fixing lugs, and the bolt's thread is obliquely engaged between the two fixing lugs.

[0010] In one embodiment, a snap-fit ​​plate is provided at the bottom of the fixing ear plate near the bolt end, the U-shaped opening is provided on the snap-fit ​​plate, and the locking nut is used to abut against the bottom of the snap-fit ​​plate.

[0011] In one embodiment, the fixing ear plate is fixed to the first side upper mold by pinning, bolting or welding.

[0012] In one embodiment, the bolt is a hinge bolt, and the hinged end of the hinge bolt is hinged to the end of the second side upper mold by a pin.

[0013] In one embodiment, the end of the second side upper mold is provided with a hinge lug for hinged bolts.

[0014] Based on the same concept as the aforementioned utility model, this application also provides a closed inner mold, which can be provided with the connection structure of the closed inner mold as described above.

[0015] The connection structure and closed inner mold provided in this application have the following advantages compared with the prior art:

[0016] By setting a connecting structure between the first and second upper molds, when the rotation and erection of either the first or second upper mold fails to reach the correct position, resulting in lateral and / or vertical misalignment and gaps on the left and right sides at the panel joint of the first and second upper molds, the fastening components can be tightened. Specifically, tightening the first hinge bolt secures the connecting structure, causing the first and second upper molds to pull together and simultaneously achieving lateral and / or vertical leveling. This eliminates the misalignment and gaps at the panel joint of the first and second upper molds, thus ensuring proper alignment of the joints between the molds. The connection structure ensures that the templates are aligned and meet the requirements for use. When there are no misalignments or gaps between the templates, this connection structure can also establish a reliable connection between the first and second upper molds, which is beneficial to improving the load-bearing capacity of the inner mold. When opening or closing the inner mold, the connection structure does not need to be repeatedly installed and disassembled. It is only necessary to tighten or loosen the nuts of the fastening components. The fixing part is retained in the first upper mold, and the bolts of the fastening components are retained in the second upper mold. When closing the mold, it will not interfere with other parts of the inner mold. Therefore, it can effectively reduce the workload of installation and disassembly, reduce labor intensity, and meet the requirements for efficient use of the inner mold. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 The schematic diagram shows the main view structure of the existing closed inner mold;

[0019] Figure 2 The schematic diagram illustrates a partial front view of the closed inner mold according to an embodiment of this application;

[0020] Figure 3 Schematic representation Figure 2 The enlarged structure of part A;

[0021] Figure 4 Schematic representation Figure 3 The main view magnification structure of section B;

[0022] Figure 5 Schematic representation Figure 3 The three-dimensional magnified structure of part B.

[0023] Explanation of reference numerals in the attached figures:

[0024] 10a, First side mold assembly; 101a, First side upper mold; 102a, First side lower mold; 20a, Second side mold assembly; 201a, Second side upper mold; 202a, Second side lower mold; 10, First side inner mold; 11, First side upper mold; 12, First side lower mold; 20, Second side inner mold; 21, Second side upper mold; 22, Second side upper mold; 30, Connecting structure; 31, Fixing part; 311, Protruding end; 312, Fastening surface; 313, Top pressing surface; 314, U-shaped opening; 315, Fixing ear plate; 316, Snap-fit ​​plate; 32, Fastening assembly; 321, Bolt; 323, Locking nut; 325, Hinge ear plate; 40, Pin. Detailed Implementation

[0025] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set up," "equipped with," "located in," "installed," and "connected," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0027] The terms “outer side,” “upper,” “top surface,” “end,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, 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. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, unless otherwise expressly specified and limited, the terms "first", "second", etc. are used only to distinguish elements with similar properties, and not to indicate or imply relative importance or a specific order.

[0029] The term “include” or any other variation thereof is intended to cover non-exclusive inclusion, which includes not only those elements listed, but also other elements not expressly listed.

[0030] like Figure 2 and Figure 3As shown, this application embodiment provides a connection structure for a closed inner mold and a closed inner mold having the connection structure for the closed inner mold. The closed inner mold of this application embodiment includes a first side inner mold 10 and a second side inner mold 20 arranged opposite to each other. The first side inner mold 10 includes a first side lower mold 12 and a first side upper mold 11 that are hinged to each other. The second side inner mold 20 includes a second side lower mold 22 and a second side upper mold 21 that are hinged to each other. The splice seam between the first side upper mold 11 and the second side upper mold 21 is arranged in an inclined direction and the first side upper mold 11 is located on the lower side of the splice seam. The connecting structure 30 includes a fixing part 31 and a fastening component 32. The fixing part 31 is fixedly connected to the lower part of the upper end of the first side upper mold 11 and has a protruding end 311 facing the second side upper mold 21. One end of the fastening component 32 is connected to the second side upper mold 21, and the other end is detachably connected to the protruding end 311 of the fixing part 31. The fastening direction of the fastening component 32 is arranged obliquely to provide both horizontal and vertical tension to make the first side upper mold 11 and the second side upper mold 21 close together and the top working surfaces are flush.

[0031] The closed inner mold connection structure 30 provided in this embodiment is disposed between the first upper mold 11 and the second upper mold 21. When the first upper mold 11 or the second upper mold 21 fails to rotate and stand in place, resulting in lateral and / or vertical misalignment and gaps at the panel splicing of the first upper mold 11 and the second upper mold 21, the horizontal and vertical tension can be provided by tightening the obliquely arranged fastening component 32 to cause the first upper mold 11 and the second upper mold 21 to adjust their positions up, down, left, and right, and at the same time, it plays a role in horizontal and / or vertical leveling, eliminating the misalignment at the panel splicing of the first upper mold 11 and the second upper mold 21. The connection structure ensures that the joints between the templates are aligned, meeting the requirements for template use. When there are no misalignments or gaps between the templates, this connection structure also allows for a reliable connection between the first upper mold 11 and the second upper mold 21, which helps improve the load-bearing capacity of the inner mold. When opening or closing the inner mold, the connection structure does not require repeated installation and disassembly; only the fastening components need to be tightened or loosened. The fixing part remains on the first upper mold 11, and the fastening components 32 remain on the second upper mold 21. When closing the mold, it will not interfere with other parts of the inner mold, thus effectively reducing the workload of installation and disassembly, reducing labor intensity, and meeting the requirements for efficient use of the inner mold.

[0032] like Figures 2 to 5As shown, in one embodiment, the protruding end 311 includes a fastening surface 312 and a pressing surface 313. The fastening surface 312 is located below the protruding end 311 and is perpendicular to the tension direction of the fastening assembly 32. The fastening surface 312 is provided with a U-shaped opening 314 facing the second side upper mold 21. The fastening assembly 32 includes a bolt 321 and a locking nut 323. One end of the bolt 321 is connected to the second side upper mold 21. The thread of the bolt 321 is obliquely inserted into the U-shaped opening 314. The locking nut 323 is installed on the fastening surface 312 side. The pressing surface 313 is located above the protruding end 311. When the locking nut 323 is tightened, the pressing surface 313 can fit against the second side upper mold 21 to achieve vertical positioning of the first side upper mold 11 and the second side upper mold 21.

[0033] Specifically, to avoid interference between the first upper mold 11 and the second upper mold 21 during their respective contraction or opening, and to ensure complete closure of the inner mold after opening, the contact area between the first upper mold 11 and the second upper mold 21 after opening is usually designed as a sloping structure. Therefore, the bolt 321 is set at an angle, which facilitates complete contact of the sloping structures of the first upper mold 11 and the second upper mold 21 during the tightening of the bolt 321, avoiding misalignment and gaps between the first upper mold 11 and the second upper mold 21. Furthermore, the U-shaped opening 314 is more conducive to the installation and removal of the bolt 321.

[0034] In one embodiment, the fixing part 31 includes two spaced-apart fixing lugs 315, and the thread of the bolt 321 is obliquely engaged between the two fixing lugs 315. Obviously, by setting the fixing lugs 315 to engage the thread of the bolt 321, the fastening assembly 32 can be adjusted and tightened stably and reliably to a great extent.

[0035] In one embodiment, a snap-fit ​​plate 316 is provided at the bottom of the fixing lug 315 near the bolt 321, with a U-shaped opening 314 provided on the snap-fit ​​plate 316, and a locking nut 323 is used to abut against the bottom of the snap-fit ​​plate 316. Clearly, by adding snap-fit ​​plates 316 to the bottom of the two fixing lugs 315, it is beneficial to further increase the stability and reliability of the fastening assembly 32. Preferably, in this embodiment, the end of the snap-fit ​​plate 316 with the U-shaped opening 314 is inclined downwards to better accommodate the inclined installation of the bolt 321 and the locking nut 323, thereby further improving the stability and reliability of the connection structure 30.

[0036] In one embodiment, the fixed ear plate 315 is fixed to the first side upper mold 11 by pin, bolt, or welding. Specifically, the connecting structure 30 is fixed to the first side upper mold 11 by pin 40 or bolt, which can be flexibly assembled and disassembled. Furthermore, if the connecting structure 30 is not used, the fixed ear plate 315 can also be fixed by welding. Other limiting devices can also be fixed by using the pin positioning holes on the fixed ear plate 315.

[0037] In one embodiment, bolt 321 is a hinged bolt, and the hinged end of the hinged bolt is hinged to the end of the second side upper mold 21 via pin 40. Specifically, the fastening assembly 32 is hinged to the bottom of the second side upper mold 21 with the hinged end of the hinged bolt, which makes the adjustment and fastening action of the fastening assembly 32 more flexible.

[0038] In one embodiment, the end of the second side upper mold 21 is provided with a hinge ear plate 325 for hinge bolt 321. The hinge ear plate 325 includes two sets, which are arranged in parallel. The hinge end of the hinge bolt is hinged between the two sets of hinge ear plates 325 by a pin 40, so as to ensure the structural stability and reliability of the connection structure 30.

[0039] As can be seen from the above embodiments, when the closed inner mold connection structure and closed inner mold involved in this application fail to rotate and stand in place, resulting in horizontal and / or vertical misalignment and gaps at the panel splicing of the first and second upper molds, the connection structure can be tightened by adjusting the fastening components, so that the first and second upper molds can be adjusted to each other, achieving horizontal and / or vertical leveling and establishing a reliable connection, thereby meeting the template usage requirements.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily obtained by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A connection structure for a closed inner mold, the closed inner mold comprising a first side inner mold (10) and a second side inner mold (20) disposed opposite to each other, the first side inner mold (10) comprising a first side lower mold (12) and a first side upper mold (11) hinged to each other, the second side inner mold (20) comprising a second side lower mold (22) and a second side upper mold (21) hinged to each other, the splicing seam between the first side upper mold (11) and the second side upper mold (21) being disposed along an inclined direction and the first side upper mold (11) being located below the splicing seam; characterized in that, The connection structure (30) includes a fixing part (31) and a fastening assembly (32); The fixing part (31) is fixedly connected to the lower part of the upper end of the first side upper mold (11), and the fixing part (31) has an extension end (311) facing the second side upper mold (21). One end of the fastening component (32) is connected to the second side upper mold (21), and the other end is detachably connected to the protruding end (311) of the fixing part (31). The fastening direction of the fastening component (32) is set at an angle to provide both horizontal and vertical tension to make the first side upper mold (11) and the second side upper mold (21) close together and have their top working surfaces flush.

2. The connection structure of the closed inner mold according to claim 1, characterized in that, The protruding end (311) includes a fastening surface (312) and a pressing surface (313). The fastening surface (312) is located below the protruding end (311) and is perpendicular to the tension direction of the fastening assembly (32). The fastening surface (312) is provided with a U-shaped opening (314) facing the second side upper mold (21). The fastening assembly (32) includes a bolt (321) and a locking nut (323). One end of the bolt (321) is connected to the second side upper mold (21). The thread of the bolt (321) is obliquely inserted into the U-shaped opening (314). The locking nut (323) is installed on the fastening surface (312). The top pressing surface (313) is located above the protruding end (311). When the locking nut (323) is tightened, the top pressing surface (313) can fit against the second side upper mold (21), thereby achieving vertical positioning of the first side upper mold (11) and the second side upper mold (21).

3. The connection structure of the closed inner mold according to claim 2, characterized in that, The fixing part (31) includes two spaced fixing lugs (315), and the bolt (321) is obliquely engaged between the two fixing lugs (315).

4. The connection structure of the closed inner mold according to claim 3, characterized in that, The fixed ear plate (315) has a snap-fit ​​plate (316) at the bottom near the bolt (321), the U-shaped opening (314) is located at the end of the snap-fit ​​plate (316), and the locking nut (323) can abut against the bottom of the snap-fit ​​plate (316).

5. The connection structure of the closed inner mold according to claim 3 or 4, characterized in that, The fixed ear plate (315) is fixed to the first side upper mold (11) by pin, bolt or welding.

6. The connection structure of the closed inner mold according to any one of claims 2 to 4, characterized in that, The bolt (321) is a hinge bolt, and the hinged end of the hinge bolt is hinged to the end of the second side upper mold (21) by a pin (40).

7. The connection structure of the closed inner mold according to any one of claims 2 to 4, characterized in that, The end of the second side upper mold (21) is provided with a hinge ear plate (325) for hinged to the bolt (321).

8. A closed inner mold, characterized in that, It is provided with a connection structure for a closed inner mold as described in any one of claims 1 to 7.

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