Variable cross-section conversion mold

Abstract

The application discloses a variable cross-section conversion mold, which comprises a square mold, a circular mold and a bottom sealing mold, the square mold is detachably connected with the bottom sealing mold, and the bottom sealing mold is relatively rotated with the circular mold through a rotating connecting device. Through bearing connection and block splicing design, the square mold is dynamically rotated and aligned, and the position deviation of the circular pile is adapted.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a variable cross-section conversion mold. Background Technology

[0002] Currently, square and round piles are poured in batches. First, round piles are poured below the ground surface. After the round pile concrete has cured, the round mold is removed, and then the square mold is placed above the ground to pour the square piles around the round piles. However, this batch pouring process has the following systemic defects: (1) When round and square piles are poured in batches, the concrete ages are different, and the shrinkage stress is inconsistent, resulting in obvious construction joints at the joints; (2) In the existing technology, after the round pile concrete has cured and the round mold has been removed, square molds need to be installed above the ground around the round piles. At this time, if a row of piles needs to be poured (such as to form a continuous retaining structure), the side of each square mold needs to be aligned with the adjacent mold to ensure that the retaining plate is installed flat.

[0003] At this point, the square mold can only be fixed to a temporary support with rigid bolts, lacking a rotatable adjustment structure. This makes it difficult to dynamically adjust the orientation of the square mold according to the actual position of the cast-in-place circular pile during on-site installation. Because the orientation of the square mold cannot be quickly calibrated by rotation, a vicious cycle of "installation - casting - alignment deviation discovered after demolding - re-casting" often occurs during construction. Utility Model Content

[0004] This utility model aims to provide a variable cross-section conversion mold, which, through bearing connection and segmented splicing design, achieves dynamic rotational alignment of a square mold to adapt to positional deviations of circular piles. To achieve the above objectives, this utility model provides the following technical solution: A variable cross-section conversion mold includes a square mold, a circular mold, and a bottom-sealing mold. The square mold and the bottom-sealing mold are detachably connected, and the bottom-sealing mold and the circular mold can rotate relative to each other through the rotating connection device.

[0005] The working principle and beneficial effects of this utility model: In existing technologies, the square mold and the temporary support on the construction site are detachably connected, but the orientation of the square mold cannot be quickly adjusted to compensate for deviations in the position of the circular pile. In this application, the square mold and the bottom mold are connected by a detachable structure (such as bolts or clips), which facilitates quick separation after pouring; the bottom mold and the circular mold are able to rotate relative to each other through a rotating connection device (such as bearings). When there is a positional deviation in the circular pile, the bottom mold can be rotated to drive the square mold to adjust its orientation, ensuring alignment of multiple piles and improving the installation accuracy of the retaining plate.

[0006] The square mold and the bottom mold are rigidly connected by a detachable structure, and the bottom mold and the round mold are connected by a dynamic connection device, which allows for a single pouring, thus solving the problem of construction joints that occur in the batch pouring of existing technologies.

[0007] Optimized, the rotating connection device is a bearing.

[0008] The optimized bearing includes an inner ring and an outer ring with raceways, and rolling elements disposed within the raceways. The inner ring is fixedly connected to a circular mold, and the outer ring is fixedly connected to a bottom-sealing mold. The bottom-sealing mold adopts a segmented splicing structure, the circular mold adopts a segmented splicing structure, and the inner and outer rings adopt a segmented splicing structure.

[0009] The optimized bearing comprises an inner ring and an outer ring, which are spliced ​​together in left and right halves. The bottom sealing mold is formed by splicing left and right bottom sealing plates. Each bottom sealing plate is welded to the corresponding half of the outer ring. The circular mold is formed by splicing left and right halves together with bolts. Each half of the inner ring is welded to the corresponding half of the circular mold.

[0010] The optimized design features threaded holes on both outer rings, allowing the two outer rings to be joined together by screwing a screw into the threaded holes.

[0011] Optimized, the rolling element is a ball. Attached Figure Description

[0012] Figure 1 This is an overall drawing of a variable cross-section conversion mold; Figure 2 for Figure 1 Top view in the middle; Figure 3 for Figure 2 Front view of a medium-sized circular mold.

[0013] The reference numerals in the accompanying drawings include: Detailed Implementation The following detailed description of the specific implementation method further illustrates the following components: square mold 1, round mold, bottom plate 3, bearing 4, outer ring 5, ball bearing 6, inner ring 7, and M12 screw 8.

[0014] In the following statements, directional terms such as "left," "right," "up," and "down" are based on the directions shown in the diagram. In practice, if the corresponding structures are changed in the same direction based on the direction while maintaining their relative positions, it will not affect the implementation of the plan.

[0015] Example: A variable cross-section conversion mold, such as Figure 1 , Figure 2 and Figure 3As shown, it includes a square mold 1, a circular mold 2, and a bottom sealing mold. The square mold 1 and the bottom sealing mold are detachably connected by bolts, and the bottom sealing mold and the circular mold 2 can rotate relative to each other through bearings 4.

[0016] Specifically, the bearing 4 includes an inner ring 7 with raceways, an outer ring 5, and rolling balls disposed within the raceways. The bearing 4 consists of two halves of the inner ring 7 and outer ring 5 joined together. The bottom sealing mold is formed by joining left and right bottom sealing plates 3. Each bottom sealing plate 3 is welded to the corresponding half of the outer ring 5. The circular mold 2 is formed by joining left and right halves with bolts. Each half of the inner ring 7 is welded to the corresponding half of the circular mold 2. Both halves of the outer ring 5 are provided with threaded holes.

[0017] The usage method is as follows: S1. Align the left and right halves of the circular mold 2 and tighten them with M16 bolts. Weld half of the inner ring 7 to the inside. After welding, use a dial indicator to calibrate the coaxiality of the inner ring 7. The error should be ≤0.5mm. At this point, the two halves of the inner ring 7 will be joined together to form a complete inner ring 7.

[0018] S2. Dig a hole at the location where construction is needed, and place the circular mold 2 into the hole. Insert the ball bearing 6 into the raceway of the outer half of the outer ring 5, align the two halves of the outer ring 5, and fix the two halves of the outer ring 5 by screwing the M12 screw 8 into the threaded hole. During the splicing process, the ball bearing 6 is aligned with the raceway of the inner ring 7. At this time, the ball bearing 6 is also inserted into the raceway of the inner ring 7, connecting the inner ring 7 and the outer ring 5 into a whole, and ensuring that the ball bearing 6 of the inner ring 7 and the outer ring 5 of the bearing 4 roll normally.

[0019] S3. Connect the square mold 1 to the bottom sealing mold with M16 bolts.

[0020] S4. Rotate the square mold 1 to fine-tune its position, ensuring that the side of each square mold 1 is aligned with the adjacent mold to guarantee a level installation of the retaining plate. Pour concrete into the top of the square mold 1, controlling the pouring speed.

[0021] S5. After the concrete has solidified, loosen the M16 bolts between the square mold 1 and the bottom mold, and disassemble the square mold 1. S6. Loosen the M12 screw 8 connecting the two halves of the outer ring 5 of bearing 4, disassemble it into two halves, and remove the two halves of the outer ring 5 and the ball bearing 6; mechanically excavate the soil next to the hole, manually clean the surface soil, expose the joint of the circular mold 2, and check the bolt connection status. Loosen the M16 bolts on the left and right halves of the circular mold 2, first remove the left half of the circular mold 2, lift it away, and then remove the right half of the circular mold 2.

[0022] Post-maintenance: When increased rotational resistance is observed in bearing 4, flush the raceway and balls 6 with a high-pressure water gun. If the slurry solidifies, it can be cleaned with a mechanical brush. After cleaning, apply lithium-based grease. Alternatively, simply replace bearing 4 with a new one.

[0023] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as screws, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

Claims

1. A variable cross-section conversion mold, comprising a square mold, a circular mold, and a bottom-sealing mold, characterized in that: The square mold and the bottom sealing mold are detachably connected, and the bottom sealing mold and the circular mold can rotate relative to each other through a rotating connection device, which is a bearing.

2. The conversion mold according to claim 1, characterized in that: The bearing includes an inner ring and an outer ring with raceways, and rolling elements disposed within the raceways. The inner ring is fixedly connected to a circular mold, and the outer ring is fixedly connected to a bottom-sealing mold. The bottom-sealing mold adopts a segmented splicing structure, the circular mold adopts a segmented splicing structure, and the inner and outer rings adopt a segmented splicing structure.

3. The conversion mold according to claim 2, characterized in that: The bearing consists of an inner ring and an outer ring, which are spliced ​​together in left and right halves. The bottom sealing mold is formed by splicing left and right bottom sealing plates. Each bottom sealing plate is welded to the corresponding half of the outer ring. The circular mold is formed by splicing left and right halves together with bolts. Each half of the inner ring is welded to the corresponding half of the circular mold.

4. The mold according to claim 3, characterized in that: Both halves of the outer ring are provided with threaded holes, and the two halves of the outer ring are spliced ​​by screwing the screw into the threaded holes.

5. The mold according to claim 4, characterized in that: The rolling element is a ball bearing.

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