Hydraulic die for prefabricating small box girder

By designing hydraulic molds, the problems of difficult demolding and grout leakage in wear gaps of existing box girder molds have been solved, enabling convenient demolding and sealing of gaps, thus improving the forming quality of concrete box girders.

CN224027946UActive Publication Date: 2026-03-24SICHUAN COMM CONSTR MEIZHOU CONSTR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-10
Publication Date
2026-03-24

AI Technical Summary

Technical Problem

The existing box girder molds are difficult to demold due to their heavy weight, and the wear between the side plates and the bottom creates gaps that cause grout leakage, affecting the forming quality of the concrete box girder.

Method used

The design employs a hydraulic mold, utilizing a hydraulic telescopic rod to drive the side plate to separate from the bottom plate. The expansion and deformation of the filling component seals the wear gaps, ensuring a tight fit between the side plate and the bottom plate.

Benefits of technology

This allows for easy separation and demolding of the side plates and bottom plates, preventing grout leakage and improving the forming quality of the concrete box girder.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of prefabricated box girder dies, and particularly discloses a prefabricated small box girder hydraulic die which comprises a bottom plate, side plates connected to the two sides of the bottom plate, a support arranged on one sides of the side plates, a displacement base connected to the bottom of the support, and a hydraulic telescopic rod connected to one side of the middle of the displacement base. Embedding blocks are arranged on the sides, attached to the bottom plate, of the side plates, embedding grooves are formed in the two sides of the bottom plate, piston plates are connected to the middles of the embedding grooves, filling assemblies are arranged on the upper sides and the lower sides of the embedding grooves, and the filling assemblies deform through displacement of the piston plates. The device is further provided with a filling assembly, the attached portion of the side plate and the bottom plate is filled through expansion deformation of the filling assembly, a gap generated by abrasion between the side plate and the bottom plate is blocked, and slurry leakage deformation during pouring is prevented.
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Description

TECHNICAL FIELD

[0001] The utility model relates to precast box girder mould technical field, specifically, relate to a kind of precast small box girder hydraulic mould. BACKGROUND

[0002] The precast box girder mould refers to the mould for concrete pouring forming.

[0003] But the existing box girder mould side plate because of weight, lead to when carrying out separation, more troublesome and difficult, simultaneously, side plate is combined with bottom, and wear and tear of two will lead to the fitting part to have certain gap, lead to will produce leakage, make in pouring, it will lead to concrete box girder to have certain deformation, make its pouring concrete surface become uneven. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of precast small box girder hydraulic mould, solve the existing box girder mould because because weight is inconvenient to move separation stripping, simultaneously, because mould side plate and wear and tear of bottom lead to when being combined fitting, easy to produce gap and lead to leakage, to affect box girder forming quality.

[0005] The utility model discloses the following technical scheme realizes:

[0006] The utility model provides a kind of precast small box girder hydraulic mould, including bottom plate, the both sides of bottom plate are connected with side plate, one side of side plate is provided with support, the bottom of support is connected with displacement base, one side of the middle part of displacement base is connected with hydraulic telescopic link, side plate fitting bottom plate one side is provided with inlay block, bottom plate both sides are provided with inlay groove, inlay groove middle part is connected with piston plate, inlay groove upper and lower sides are provided with filling assembly, filling assembly is displaced by piston plate.

[0007] Preferably, the piston plate is a plate that cooperates with the inlay groove, and one side of the piston plate is connected to the inlay groove by a spring.

[0008] Preferably, one end of the hydraulic telescopic link is connected to the bottom of the support, and the bottom of the support protrudes to connect a roller in the displacement base.

[0009] Preferably, the filling assembly includes a filling slot, an air inlet hole, and a filling air bag. The filling slot is arranged on one side of the bottom plate near the both sides of the inlay groove. The air inlet hole is arranged on one side of the filling slot. The filling air bag is connected in the filling slot.

[0010] Preferably, the air inlet hole is arranged on one side of the filling slot near the inlay groove, and the air inlet hole is in communication with the middle part of the inlay groove.

[0011] Preferably, the air inlet hole is in communication with the inside of the filling air bag.

[0012] Preferably, the chimeric block cooperates with the chimeric slot.

[0013] The technical scheme of the utility model has at least the following advantages and beneficial effects:

[0014] 1. The displacement base provided in the device can control the left and right transverse movement of the side plate, so that the side plate can be separated and demolded after the concrete box girder is poured, and the concrete box girder remains on the base plate.

[0015] 2. The device is also provided with a filling assembly, which expands and deforms to fill the part where the side plate and the base plate are attached, to block the gap caused by wear between the two, preventing slurry leakage and deformation during pouring. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The utility model discloses an overall structure schematic diagram.

[0017] Figure 2 The utility model discloses Figure 1 The utility model discloses an enlarged structure schematic diagram of A place.

[0018] Figure 3 The utility model discloses a support and displacement base side view cross section structure schematic diagram.

[0019] Reference signs: 1-base plate, 101-chimeric slot, 1011-piston plate, 102-filling slot, 1021-air inlet hole, 1022-filling air bag, 2-side plate, 201-support, 202-chimeric block, 3-displacement base, 301-hydraulic telescopic rod. DETAILED DESCRIPTION

[0020] The utility model will be described in detail below. Figures 1 to 3 The utility model discloses an overall structure schematic diagram.

[0021] A prefabricated small box girder hydraulic die, including base plate 1, the both sides of base plate 1 are connected with side plate 2, one side of side plate 2 is provided with support 201, the bottom of support 201 is connected with displacement base 3, one side of the middle part of displacement base 3 is connected with hydraulic telescopic rod 301, and one side of base plate 1 is provided with chimeric block 202 and is connected with displacement base 3, and the bottom of support 201 is connected with displacement base 3.

[0022] First, the side plate 2 is combined with the bottom plate 1, and then the pouring of the concrete box girder is carried out therebetween, and after the pouring is completed, the side plate 2 and the bottom plate 1 are separated by the displacement of the displacement base through the displacement of the bottom support 201 of the bottom plate 1, and the demolding of the poured and formed concrete box girder and the side plate 2 is also carried out, and the movement of the support 201 is carried out through the connection of the bottom and the hydraulic telescopic rod 301, and then the contraction of the hydraulic telescopic rod 301 drives the displacement, and the rollers at the bottom of the support 201 also better drive the displacement.

[0023] At the same time, when the side plate 2 and the bottom plate 1 are folded and spliced, the embedded block 202 will cooperate with the embedded groove 101, and when the embedded block 202 is embedded into the embedded groove 101, the piston plate 1011 will be pushed to move, and when the piston plate 1011 moves, the air in the embedded groove 101 will be extruded, so that it will be discharged into the filling air bag 1022 through the air inlet hole 1021, so that the air bag 1022 will be filled with air flow, so that the air bag 1022 will be inflated and filled with the entire filling groove 102, and when the filling groove 102 is filled, because the air bag 1022 itself has a certain flexibility, it will be tightly filled into the filling groove 102, and it will also be attached to one side of the side plate 2, so that even if there is a gap between the side plate 2 and the bottom plate 1 due to wear, the air bag 102 will also be filled to prevent the gap from flowing out and affecting the pouring of the formed concrete.

[0024] Further, the piston plate 1011 is a plate material matched with the embedded groove 101, one side of the piston plate 1011 is connected with the embedded groove 101 through a spring, the filling assembly includes a filling groove 102, an air inlet hole 1021 and a filling air bag 1022, the filling groove 102 is arranged on one side of the bottom plate 1 close to both sides of the embedded groove 101, the air inlet hole 1021 is arranged on one side of the filling groove 102, the filling air bag 1022 is connected in the filling groove 102, the air inlet hole 1021 is arranged on one side of the filling groove 102 close to the embedded groove 101, and the air inlet hole 1021 is in communication with the middle part of the embedded groove 101, the air inlet hole 1021 is in communication with the inside of the filling air bag 1022, and the embedded block 202 cooperates with the embedded groove 101.

[0025] The following is the embodiment of the utility model concrete pouring process, first, the side plate 2 and the bottom plate 1 are combined, then the concrete box girder is poured between them, and after pouring is completed, the side plate 2 and the bottom plate 1 are separated by the displacement of the displacement base of the bottom support 201 of the bottom plate 1, the concrete box girder after pouring and shaping is also demoulded from the side plate 2, the movement of the support 201 is connected with the hydraulic telescopic rod 301 at the bottom, then the telescopic rod 301 is retracted to drive the displacement, the roller at the bottom of the support 201 is also better driven to displace, at the same time, when the side plate 2 and the bottom plate 1 are folded and spliced, the embedded block 202 cooperates with the embedded groove 101, when the embedded block 202 is embedded into the embedded groove 101, the piston plate 1011 is pushed to move, the air in the embedded groove 101 is extruded when the piston plate 1011 moves, the air is discharged into the filling air bag 1022 through the air inlet hole 1021, the air bag 1022 is filled with air flow, the air bag 1022 is inflated to fill the filling groove 102, when the filling groove 102 is filled, because the air bag 1022 has certain flexibility, it is tightly filled into the filling groove 102, and it is also attached to one side of the side plate 2, so that even if there is a gap between the side plate 2 and the bottom plate 1 due to wear, the air bag 102 can also collide and fill the gap, so that the gap does not flow out, which can affect the pouring of the shaped concrete.

Claims

1. A hydraulic mold for prefabricated small box girder, comprising a base plate (1), wherein side plates (2) are connected to both sides of the base plate (1), and a bracket (201) is provided on one side of the side plate (2), characterized in that, The bottom of the bracket (201) is connected to a displacement base (3), and a hydraulic telescopic rod (301) is connected to one side of the middle part of the displacement base (3). A fitting block (202) is provided on the side of the side plate (2) that is in contact with the bottom plate (1). Fitting grooves (101) are provided on both sides of the bottom plate (1). A piston plate (1011) is connected to the middle of the fitting groove (101). Filling components are provided on the upper and lower sides of the fitting groove (101). The filling components are deformed by displacement through the piston plate (1011).

2. The hydraulic mold for prefabricated small box girder according to claim 1, characterized in that, The piston plate (1011) is a plate that mates with the fitting groove (101), and one side of the piston plate (1011) is connected to the fitting groove (101) by a spring.

3. The hydraulic mold for prefabricated small box girder according to claim 1, characterized in that, One end of the hydraulic telescopic rod (301) is connected to the bottom of the bracket (201), and the bottom of the bracket (201) is provided with a roller connected to the displacement base (3).

4. The hydraulic mold for prefabricated small box girder according to claim 1, characterized in that, The filling assembly includes a filling groove (102), an air inlet (1021), and a filling airbag (1022). The filling groove (102) is located on one side of the base plate (1) near the two sides of the fitting groove (101). The air inlet (1021) is located on one side of the filling groove (102). The filling airbag (1022) is connected in the filling groove (102).

5. A precast small box girder hydraulic mold according to claim 4, characterized in that, The air inlet (1021) is located on the side of the filling groove (102) near the fitting groove (101), and the air inlet (1021) is connected to the middle of the fitting groove (101).

6. A precast small box girder hydraulic mold according to claim 4, characterized in that, The air inlet (1021) is connected to the interior of the filling airbag (1022).

7. A prefabricated small box girder hydraulic mold according to claim 1, characterized in that, The fitting block (202) is engaged with the fitting groove (101).