Hydraulic internal mold for prefabricating small box girder of highway

Abstract

The utility model discloses a hydraulic internal mold for prefabricating a small highway box girder, which comprises a bottom mold, a longitudinal beam is longitudinally and fixedly mounted in the center of the bottom mold, a left lower side mold and a right lower side mold are respectively arranged on two sides of the bottom mold, a third oil cylinder is arranged between the bottom of the left lower side mold and the bottom of the right lower side mold, and a fourth oil cylinder is arranged on the bottom of the third oil cylinder. The bottom of the inner surface of the left lower side mold and the bottom of the inner surface of the right lower side mold are each fixedly provided with a connecting base, the longitudinal beam is movably connected with the connecting bases through connecting rods, the top end of the left lower side mold and the top end of the right lower side mold are hinged to a left upper side mold and a right upper side mold respectively, and a first oil cylinder is arranged between the left lower side mold and the left upper side mold. And an oil cylinder II is arranged between the right lower side die and the right upper side die. The inner surface of the beam body does not rub with the inner die any more, so that the beam body and the inner die are separated more easily, meanwhile, the inner die cannot be damaged, and the product quality and the production efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to a beam yard construction device for engineering construction, and more particularly to a hydraulic inner mold for the prefabrication of small box girders for highways. Background Technology

[0002] The existing prefabricated inner molds for highway small box girders are generally assembled by the construction unit using steel welding near the construction site according to their needs. After the inner mold is assembled and the beam body is manufactured, it is necessary to separate the beam body from the inner mold. This usually requires a winch to pull the beam body to separate the inner mold from the beam body. During the pulling process, friction occurs between the inner mold and the beam body, which often damages the inner mold. Manual repair and adjustment of the inner mold dimensions are required, which is not conducive to improving product quality and production efficiency. Summary of the Invention

[0003] To solve the above problems, the technical solution of this utility model is: a hydraulic inner mold for prefabrication of highway small box girders, comprising a bottom mold, a longitudinal beam fixedly installed in the center of the bottom mold, a lower left side mold and a lower right side mold respectively provided on both sides of the bottom mold, a hydraulic cylinder three provided between the bottom of the lower left side mold and the lower right side mold, a connecting seat fixedly provided at the bottom of the inner surface of the lower left side mold and the lower right side mold respectively, the longitudinal beam and the connecting seat being movably connected by a connecting rod, an upper left side mold and an upper right side mold respectively hinged to the top of the lower left side mold and the lower right side mold, a hydraulic cylinder one provided between the lower left side mold and the upper left side mold, and a hydraulic cylinder two provided between the lower right side mold and the upper right side mold.

[0004] To prevent mud from entering the inner mold, the upper left side mold and the upper right side mold are provided with mutually cooperating inclined surfaces at their adjacent ends, with the inclined surface of the upper left side mold located above the inclined surface of the upper right side mold.

[0005] To improve the sealing effect and prevent mud from entering the inner mold, sealing elements are provided on both sides of the bottom mold.

[0006] To improve the support of the upper right side mold when making the beam, one end of the hydraulic cylinder is hinged to the top of the lower right side mold, and the other end is hinged to the end of the upper right side mold near the upper left side mold.

[0007] In order to better control the opening and closing of the upper left mold, one end of the hydraulic cylinder is hinged to the bottom of the lower left mold, and the other end is hinged to the end of the upper left mold near the lower left mold.

[0008] To improve the strength of the inner mold when closed, an auxiliary support device is provided between the lower left side mold and the upper left side mold. The auxiliary support device includes a first strut seat and a second strut seat that cooperate with each other on the lower left side mold and the upper left side mold, respectively. A strut is provided between the first strut seat and the second strut seat. An auxiliary support device with the same structure is provided between the lower right side mold and the upper right side mold.

[0009] The beneficial effects of this utility model are: after the beam body is manufactured, the lower left side mold, lower right side mold, upper left side mold, and upper right side mold can be contracted by hydraulic cylinder one, hydraulic cylinder two, and hydraulic cylinder three, so that their outer surfaces are separated from the inner surface of the beam body. In this way, when the beam body is pulled out, the inner surface of the beam body will no longer rub against the inner mold, making it easier to separate the beam body from the inner mold, and at the same time, it will not damage the inner mold, which is conducive to improving product quality and production efficiency. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure in the contracted state of this utility model.

[0011] Figure 2 This is a schematic diagram of the mold-closed state structure of this utility model.

[0012] Figure 3 This is a schematic diagram of the structure of this utility model.

[0013] In the diagram: bottom mold 1, hydraulic cylinder 3 2, longitudinal beam 3, connecting rod 4, connecting seat 5, hydraulic cylinder 1 6, upper left side mold 7, upper right side mold 8, lower right side mold 9, hydraulic cylinder 2 10, seal 11, lower left side mold 12, support rod 13, support rod seat 14, support rod seat 2 15. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] exist Figures 1 to 3 A hydraulic inner mold for prefabrication of small box girders for highways comprises a bottom mold 1, a longitudinal beam 3 fixedly installed in the center of the bottom mold 1, a lower left side mold 12 and a lower right side mold 9 respectively provided on both sides of the bottom mold 1, a hydraulic cylinder 2 provided between the bottom of the lower left side mold 12 and the lower right side mold 9, a connecting seat 5 fixedly provided on the bottom of the inner surface of the lower left side mold 12 and the lower right side mold 9 respectively, the longitudinal beam 3 and the connecting seat 5 being movably connected by a connecting rod 4, an upper left side mold 7 and an upper right side mold 8 respectively hinged to the top of the lower left side mold 12 and the upper left side mold 9, a hydraulic cylinder 6 provided between the lower left side mold 12 and the upper left side mold 7, and a hydraulic cylinder 10 provided between the lower right side mold 9 and the upper right side mold 8.

[0016] Furthermore, the upper left mold 7 and the upper right mold 8 are provided with mutually cooperating inclined surfaces at their adjacent ends, and the inclined surface of the upper left mold 7 is located above the inclined surface of the upper right mold 8.

[0017] Furthermore, sealing elements 11 are respectively provided on both sides of the bottom mold 1.

[0018] Furthermore, one end of the second hydraulic cylinder 10 is hinged to the top of the lower right mold 9, and the other end is hinged to the end of the upper right mold 8 near the upper left mold 7.

[0019] Furthermore, one end of the hydraulic cylinder 6 is hinged to the bottom of the lower left mold 12, and the other end is hinged to the end of the upper left mold 7 near the lower left mold 12.

[0020] Furthermore, an auxiliary support device is provided between the lower left mold 12 and the upper left mold 7. The auxiliary support device includes a first strut seat 14 and a second strut seat 15 that are respectively provided on the lower left mold 12 and the upper left mold 7. A strut 13 is provided between the first strut seat 14 and the second strut seat 15. An auxiliary support device with the same structure is provided between the lower right mold 9 and the upper right mold 8.

[0021] During operation, the hydraulic inner mold is first transported to the workstation. When mold closing is required, first extend hydraulic cylinder 2 to bring the bottoms of the lower left mold 12 and the lower right mold 9 into contact with the bottom mold 1. Simultaneously, to provide a sealing effect, sealing elements 11 are installed on both sides of the bottom mold 1, and the inner surfaces of the bottoms of the lower left mold 12 and the lower right mold 9 contact the sealing elements 11. Next, extend hydraulic cylinder 6 to unfold the upper left template 7, and then extend hydraulic cylinder 10 to unfold the upper right template 7 until the inclined surface of the upper right template 7 contacts the inclined surface of the upper left template 7. To enhance the strength of the hydraulic inner mold, a worker can enter the hydraulic inner mold and connect the two ends of the support rod 13 to the support rod seat 14 and the support rod seat 2 15 using bolts.

[0022] After the beam is fabricated, when separating the hydraulic inner mold from the beam, first retract cylinder 10 to retract the upper right template 7, then retract cylinder 6 to retract the upper left template 7, and then retract cylinder 2 to retract the lower left template 12 and the lower right template 9. At this point, the outer surface of the hydraulic inner mold is no longer in contact with the inner surface of the beam. The beam can then be separated from the hydraulic inner mold by dragging it with a winch. After separation, the next operation can proceed.

[0023] In the description of this utility model, it should be understood that the terms "bottom", "one end", "middle", "other end", "upper", "side", "top", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic inner mold for highway small box girder prefabrication, consisting of a bottom mold (1), characterized in that: A longitudinal beam (3) is fixedly installed in the center of the bottom mold (1). A lower left side mold (12) and a lower right side mold (9) are respectively provided on both sides of the bottom mold (1). A hydraulic cylinder (2) is provided between the bottom of the lower left side mold (12) and the lower right side mold (9). A connecting seat (5) is fixedly provided at the bottom of the inner surface of the lower left side mold (12) and the lower right side mold (9). The longitudinal beam (3) and the connecting seat (5) are movably connected by a connecting rod (4). A upper left side mold (7) and a upper right side mold (8) are respectively hinged to the top of the lower left side mold (12) and the upper right side mold (9). A hydraulic cylinder (6) is provided between the lower left side mold (12) and the upper left side mold (7). A hydraulic cylinder (10) is provided between the lower right side mold (9) and the upper right side mold (8).

2. The hydraulic inner mold for highway small box girder prefabrication according to claim 1, characterized in that: The upper left mold (7) and the upper right mold (8) are provided with mutually cooperating inclined surfaces at their adjacent ends, and the inclined surface of the upper left mold (7) is located above the inclined surface of the upper right mold (8).

3. The hydraulic inner mold for highway small box girder prefabrication according to claim 1, characterized in that: The bottom mold (1) is provided with sealing elements (11) on both sides.

4. The hydraulic inner mold for highway small box girder precast according to claim 1, characterized in that: One end of the second oil cylinder (10) is hinged to the top of the lower right side mold (9), and the other end is hinged to the upper right side mold (8) near the upper left side mold (7).

5. The hydraulic inner mold for highway small box girder precast according to claim 1, characterized in that: One end of the hydraulic cylinder (6) is hinged to the bottom of the lower left mold (12), and the other end is hinged to the end of the upper left mold (7) near the lower left mold (12).

6. The hydraulic inner mold for highway small box girder precast according to claim 1, characterized in that: An auxiliary support device is provided between the lower left mold (12) and the upper left mold (7). The auxiliary support device includes a first strut seat (14) and a second strut seat (15) that cooperate with each other on the lower left mold (12) and the upper left mold (7). A strut (13) is provided between the first strut seat (14) and the second strut seat (15). An auxiliary support device with the same structure is provided between the lower right mold (9) and the upper right mold (8).

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