A fixing device for prefabricated box culvert formwork

Abstract

This utility model discloses a fixing device for prefabricated box culvert templates, belonging to the technical field of box culvert prefabricated templates. It includes an outer mold, with an inner mold inside. The outer mold has top plates at both ends, and the inner mold has a support assembly on its inner wall. By providing the support assembly, this design achieves the fixing and sealing of the top plate to the outer and inner molds through the cooperation of a second bolt and a clamping plate. During use, the cooperation between the bidirectional threaded rod and the threaded sleeve supports the extrusion strip and the sliding strip, preventing deformation on both sides of the inner mold and ensuring its integrity. Furthermore, during the extrusion process, the bidirectional threaded rod and threaded sleeve compress the extrusion strip, and the compression between the extrusion strip, wedge, and sliding strip allows the clamping plate to fully compress the top plate, further ensuring the sealing of the top plate.

Description

Technical Field

[0001] This utility model belongs to the field of precast box culvert template technology, and in particular relates to a fixing device for precast box culvert templates. Background Technology

[0002] Box culverts are culverts constructed with reinforced concrete box-shaped pipe sections. During the construction and production process of box culverts, special molds are used for processing. Concrete is poured into the molds to form the culverts, which allows for rapid production. Since box culverts are generally constructed of reinforced concrete, they have high curvature and strong durability, which further contributes to their widespread use.

[0003] In the assembly process of box culvert molds, the traditional method often uses tie rods to assemble the molds together. However, due to the tension of the tie rods at both ends of the inner mold and the compression of concrete between the inner and outer molds, the inner mold deforms into the cavity on both sides during use. This deformation increases with prolonged use, while the top and bottom do not deform as much, thus affecting the quality of the box culvert. To solve this problem, there is an urgent need for a fixing device for prefabricated box culvert templates. Utility Model Content

[0004] The purpose of this utility model is to provide a fixing device for prefabricated box culvert templates to solve the problem that fixing the box culvert template with tie rods can easily cause the inner mold to deform under stress.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a fixing device for prefabricated templates of assembled box culverts, including an outer mold, an inner mold provided inside the outer mold, first bolts fixedly installed at both ends of the outer mold and the inner mold, top plates provided at both ends of the outer mold, a support component provided on the inner wall of the inner mold, a limiting component provided on one side of the support component, and a base fixedly installed on the outer wall of the outer mold;

[0006] The support assembly includes a mounting base, on which a slide bar is slidably mounted via grooves at both ends. A clamping plate is fixedly mounted at one end of the slide bar. An extrusion strip is slidably mounted on the mounting base via a groove on one side. A sleeve is fixedly mounted at one end of the extrusion strip. A threaded sleeve is slidably mounted on the sleeve via a groove inside. A bidirectional threaded rod is internally threaded onto the threaded sleeve. A gear is fixedly mounted on the outer wall of the bidirectional threaded rod. A wedge is fixedly mounted on one side of the extrusion strip.

[0007] As a further description of the above technical solution:

[0008] The slider has a groove on one side that corresponds to the wedge, and the wedge is in contact with the groove on the slider.

[0009] As a further description of the above technical solution:

[0010] One side of the mounting base is fixedly connected to the inner wall of the inner mold, and the mounting bases on the inner wall of the inner mold are symmetrically arranged.

[0011] As a further description of the above technical solution:

[0012] Multiple bidirectional threaded rods and threaded sleeves are provided and are evenly distributed on one side of the extrusion bar.

[0013] As a further description of the above technical solution:

[0014] The limiting component includes a housing, a connecting rod is fixedly installed on the outer wall of the housing, and upper connecting rings are fixedly installed on both sides of the housing.

[0015] As a further description of the above technical solution:

[0016] The lower connecting ring is provided at the bottom end of the upper connecting ring, and a second bolt is provided on the top surface of the lower connecting ring.

[0017] As a further description of the above technical solution:

[0018] The lower connecting ring is fixed to the upper connecting ring by a second bolt, and a toothed ring is provided inside the outer shell.

[0019] As a further description of the above technical solution:

[0020] Limiting strips are fixedly installed on both sides of the gear ring, and the limiting strips are slidably connected to the gear ring through a groove opened in the outer shell. The gear ring is meshed with the gear.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0022] 1. In this utility model, by providing a support component inside, the top plate is fixed and sealed to the outer mold and the inner mold through the cooperation between the second bolt and the clamping plate. During use, the extrusion strip and the slide bar are supported by the cooperation between the bidirectional threaded rod and the threaded sleeve, thereby preventing deformation of the inner mold on both sides during use and ensuring the integrity of the inner mold. Furthermore, during the extrusion process of the extrusion strip by the bidirectional threaded rod and the threaded sleeve, the clamping plate can fully compress the top plate through the extrusion strip, wedge block and slide bar, thereby further ensuring the sealing of the top plate.

[0023] 2. In this utility model, by setting a limiting component inside, this design enables the gear inside the outer shell to mesh with the gear after the inner wall of the inner mold is supported by the bidirectional threaded rod. This prevents the gear from rotating too much and thus prevents the bidirectional threaded rod from rotating too much. This ensures that the bidirectional threaded rod will not rotate excessively when subjected to external force and ensures that the bidirectional threaded rod plays its corresponding role. At the same time, the connection to the outer shell by the connecting rod reduces the occurrence of bending of the bidirectional threaded rod during the process of limiting the gear by the gear ring, thereby further ensuring that the bidirectional threaded rod can play its corresponding role. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of a fixing device for prefabricated box culvert templates.

[0025] Figure 2 This is an exploded three-dimensional structural diagram of a fixing device for prefabricated box culvert templates.

[0026] Figure 3 This is an exploded three-dimensional structural diagram of the support component in the fixing device of a prefabricated box culvert template.

[0027] Figure 4 This is an exploded three-dimensional structural diagram of a limiting component in a fixing device for prefabricated box culvert templates.

[0028] Legend:

[0029] 1. Outer mold; 2. First bolt; 3. Top plate; 4. Base; 5. Support assembly; 51. Mounting seat; 52. Clamping plate; 53. Sliding bar; 54. Wedge block; 55. Extrusion bar; 56. Sleeve; 57. Gear; 58. Bidirectional threaded rod; 59. Threaded sleeve; 6. Limiting assembly; 61. Upper connecting ring; 62. Connecting rod; 63. Outer shell; 64. Gear ring; 65. Limiting strip; 66. Second bolt; 67. Lower connecting ring; 7. Inner mold. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-4This utility model provides a technical solution: a fixing device for prefabricated templates of assembled box culverts, including an outer mold 1, an inner mold 7 inside the outer mold 1, first bolts 2 fixedly installed at both ends of the outer mold 1 and the inner mold 7, top plates 3 at both ends of the outer mold 1, a support component 5 on the inner wall of the inner mold 7, a limiting component 6 on one side of the support component 5, and a base 4 fixedly installed on the outer wall of the outer mold 1;

[0032] The support assembly 5 includes a mounting base 51, on which a slide bar 53 is slidably mounted through grooves at both ends. A clamping plate 52 is fixedly mounted at one end of the slide bar 53. An extrusion strip 55 is slidably mounted through a groove on one side of the mounting base 51. A sleeve 56 is fixedly mounted at one end of the extrusion strip 55. A threaded sleeve 59 is slidably mounted through a groove in the sleeve 56. A bidirectional threaded rod 58 is internally threaded into the threaded sleeve 59. A gear 57 is fixedly mounted on the outer wall of the bidirectional threaded rod 58. A wedge block 54 is fixedly mounted on one side of the extrusion strip 55.

[0033] The slide bar 53 has a groove on one side that corresponds to the wedge block 54, and the wedge block 54 is in contact with the groove on the slide bar 53. The mounting base 51 is fixedly connected to the inner wall of the inner mold 7 on one side, and the mounting bases 51 on the inner wall of the inner mold 7 are symmetrically arranged. Multiple bidirectional threaded rods 58 and threaded sleeves 59 are provided and are evenly distributed on one side of the extrusion bar 55.

[0034] The specific implementation method is as follows: When in use, the top plate 3 is first fixed to the two ends of the outer mold 1 and the inner mold 7 by the first bolt 2. Then, the slide bar 53 is inserted from the openings at both ends of the mounting base 51, so that the clamping plate 52 contacts the top plate 3. Then, the extrusion bar 55 is pushed inward and the wedge block 54 contacts the groove opened on one side of the slide bar 53. Then, the threaded sleeve 59 is held and the bidirectional threaded rod 58 is rotated, so that the threaded sleeve 59 extends further into the sleeve 56 and can extrude the extrusion bar 55 through the threaded sleeve 59, so that the wedge block 54 extrudes the slide bar 53, so that the slide bar 53 moves inward to the mounting base 51 and the clamping plate 52 clamps the top plate 3 further. Thus, the bidirectional threaded rod 58 and the threaded sleeve 59 support the two sides of the inner mold 7, and the clamping plate 52 ensures the sealing of the top plate 3.

[0035] The limiting component 6 includes a housing 63, a connecting rod 62 fixedly installed on the outer wall of the housing 63, an upper connecting ring 61 fixedly installed on both sides of the housing 63, a lower connecting ring 67 provided at the bottom end of the upper connecting ring 61, a second bolt 66 provided on the top surface of the lower connecting ring 67, and the lower connecting ring 67 fixed to the upper connecting ring 61 by the second bolt 66. A toothed ring 64 is provided inside the housing 63, and limiting strips 65 are fixedly installed on both sides of the toothed ring 64. The limiting strips 65 are slidably connected to the toothed ring 64 through a groove opened inside the housing 63. The toothed ring 64 is meshed with a gear 57.

[0036] The specific implementation method is as follows: After the extrusion strip 55 is extruded and fixed by the threaded sleeve 59, the outer shell 63 is placed on top of the gear 57, and the toothed ring 64 inside the outer shell 63 is engaged. Then, the upper connecting ring 61 and the lower connecting ring 67 are fixed by the second bolt 66. At the same time, the groove opened inside the outer shell 63 can limit the limiting strip 65 to a certain extent, thereby preventing the toothed ring 64 from rotating too much, thus limiting the gear 57 to a certain extent, and preventing the bidirectional threaded rod 58 from rotating too much and failing to play its corresponding role. Furthermore, the support of the connecting rod 62 reduces the occurrence of bending of the bidirectional threaded rod 58.

[0037] Working principle: In use, the top plate 3 is first fixed to the outer mold 1 and the inner mold 7 at both ends by the first bolt 2. Then, the extrusion strip 55 is pulled outward to leave enough space inside the mounting base 51, so that the slide strip 53 is inserted from the openings at both ends of the mounting base 51, and the clamping plate 52 contacts the top plate 3. Then, the extrusion strip 55 is pushed inward to drive the wedge block 54 to contact the groove opened on one side of the slide strip 53. Then, the threaded sleeve 59 is inserted into the sleeve 56 and held. The rotating gear 57 drives the bidirectional threaded rod 58 to rotate, thereby driving the threaded sleeve 59 to move to both sides. At the same time, the threaded sleeve 59 extends further into the sleeve 56 and can squeeze the extrusion strip 55 through the threaded sleeve 59, so that the wedge block 54 and the slide strip 53 are more closely attached. This causes the slide strip 53 to move inward to the mounting base 51 and the clamping plate 52 to press against the top plate. 3. Further clamping is performed to support both sides of the inner mold 7 through the bidirectional threaded rod 58 and the threaded sleeve 59, and to ensure the sealing of the top plate 3 through the clamping plate 52. After the bidirectional threaded rod 58 has completed supporting the extrusion strip 55, the outer shell 63 is placed on top of the gear 57, so that the toothed ring 64 inside the outer shell 63 meshes. Then, the upper connecting ring 61 and the lower connecting ring 67 are fixed by the second bolt 66, so that the bidirectional threaded rod 58 is located between the upper connecting ring 61 and the lower connecting ring 67. At the same time, the groove opened inside the outer shell 63 can limit the limiting strip 65 to a certain extent, thereby preventing the toothed ring 64 and the gear 57 from rotating too much, thus limiting the gear 57 to a certain extent, and preventing the bidirectional threaded rod 58 from rotating too much and failing to play its corresponding role. The outer shell 63 is connected by the connecting rod 62, thereby reducing the occurrence of bending of the bidirectional threaded rod 58.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fixing device for prefabricated templates of assembled box culverts, comprising an outer mold (1), characterized in that: The outer mold (1) is provided with an inner mold (7). Both ends of the outer mold (1) and the inner mold (7) are fixedly installed with first bolts (2). The outer mold (1) is provided with top plates (3) at both ends. The inner wall of the inner mold (7) is provided with a support component (5). The support component (5) is provided with a limiting component (6) on one side. The outer wall of the outer mold (1) is fixedly installed with a base (4). The support assembly (5) includes a mounting base (51), on which a slide bar (53) is slidably mounted through grooves at both ends. A clamping plate (52) is fixedly mounted at one end of the slide bar (53). An extrusion strip (55) is slidably mounted through a groove on one side of the mounting base (51). A sleeve (56) is fixedly mounted at one end of the extrusion strip (55). A threaded sleeve (59) is slidably mounted through a groove inside the sleeve (56). A bidirectional threaded rod (58) is internally threaded into the threaded sleeve (59). A gear (57) is fixedly mounted on the outer wall of the bidirectional threaded rod (58). A wedge (54) is fixedly mounted on one side of the extrusion strip (55).

2. The fixing device for prefabricated templates of assembled box culverts according to claim 1, characterized in that, The slider (53) has a groove on one side that corresponds to the wedge (54), and the wedge (54) is in contact with the groove on one side of the slider (53).

3. The fixing device for prefabricated templates of assembled box culverts according to claim 2, characterized in that, The mounting base (51) is fixedly connected to the inner wall of the inner mold (7) on one side, and the mounting bases (51) on the inner wall of the inner mold (7) are symmetrically arranged.

4. The fixing device for prefabricated templates of assembled box culverts according to claim 3, characterized in that, Multiple bidirectional threaded rods (58) and threaded sleeves (59) are provided and are evenly distributed on one side of the extrusion bar (55).

5. The fixing device for prefabricated templates of assembled box culverts according to claim 4, characterized in that, The limiting component (6) includes a housing (63), a connecting rod (62) is fixedly installed on the outer wall of the housing (63), and upper connecting rings (61) are fixedly installed on both sides of the housing (63).

6. The fixing device for prefabricated templates of assembled box culverts according to claim 5, characterized in that, The lower connecting ring (67) is provided at the bottom end of the upper connecting ring (61), and the second bolt (66) is provided on the top surface of the lower connecting ring (67).

7. The fixing device for prefabricated templates of assembled box culverts according to claim 6, characterized in that, The lower connecting ring (67) is fixed to the upper connecting ring (61) by the second bolt (66), and the outer shell (63) is provided with a toothed ring (64).

8. The fixing device for prefabricated templates of assembled box culverts according to claim 7, characterized in that, Limiting strips (65) are fixedly installed on both sides of the toothed ring (64). The limiting strips (65) are slidably connected to the toothed ring (63) through a groove opened in the outer shell (63). The toothed ring (64) is meshed with the gear (57).

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