Core mold for open-web sheet pile

Abstract

The utility model discloses an open-web sheet pile core mold which comprises a first main shaft and a second main shaft which are arranged in parallel, a plurality of connecting shafts for connecting the first main shaft and the second main shaft are arranged between the first main shaft and the second main shaft, and a first rotating bearing and a second rotating bearing are arranged at the two ends of each connecting shaft respectively. The two rotating bearings are connected through a first supporting rod piece and a second supporting rod piece correspondingly to form circular or oval supporting structures, the multiple supporting structures are arranged at intervals in the axial direction of the core mold, and the first supporting rod piece is located above the second supporting rod piece. The lower portions and the upper portions of the multiple supporting structures are connected through the first clamping connecting pieces and the second clamping connecting pieces correspondingly. According to the utility model, the problems of damage to the interior of the pile body and damage to the core mold during demolding of the rigid core mold can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to sheet pile processing technical field especially relates to a kind of hollow web sheet pile core mould. BACKGROUND

[0002] The most common method for producing hollow web sheet pile is to place a rigid core mold with a fixed shape inside the outer mold. After the pouring, curing and other processes of the sheet pile are completed, the core mold is pulled out to complete the removal of the core mold. However, due to the large length of the sheet pile, the combination between the inner wall of the pile body and the core mold is relatively tight, which causes great difficulty in the smooth removal of the core mold. During the removal process, if excessive stress is applied, it will cause damage to the inside of the pile body, affecting the quality and service life of the pile foundation, which is not conducive to the safety of subsequent use, and will also cause damage to the mold, shortening the service life of the mold.

[0003] Therefore, Chinese invention patent CN105599133B discloses a telescopic mold, which includes first and third side plates located on the left and right sides, second and fourth side plates located on the upper and lower sides, and first, second, third and fourth side plates connected by a telescopic structure. During use, the shell can be expanded outward in the circumferential direction by the telescopic mechanism to form a closed core mold for pouring the pile body of the hollow structure. When the pouring of the pile body is completed, the side plates are folded by the telescopic mechanism to detach from the inner wall of the pile foundation for easy removal. However, the core mold removal system of this structure is not strong in practicality for pile bodies with insufficient cross-section, and it is not easy to operate multiple cylinders or hydraulic cylinders simultaneously in the mold cavity. SUMMARY

[0004] The purpose of the utility model is to solve the technical problems of difficult core mold removal and small core mold cavity space that cannot install multiple cylinders or hydraulic cylinders in the existing pile foundation production process.

[0005] To achieve the purpose of the utility model, the following technical solutions are adopted:

[0006] A hollow web sheet pile core mold includes first and second main shafts arranged in parallel, a plurality of connecting shafts connecting the first and second main shafts arranged between the first and second main shafts, first and second rotary bearings arranged at both ends of the connecting shafts, and first and second support rod members connected by the two rotary bearings to form a circular or elliptical support structure. The first support rod member is located above the second support rod member, and the lower and upper parts of the plurality of support structures are connected by first and second clamping connectors, respectively.

[0007] In some embodiments, the connecting shafts are cylindrical at both ends, and the first and second rotary bearings are sleeved on the cylindrical end portions.

[0008] In some embodiments, the first and second support rods are symmetrically arranged on both sides of the connecting shaft, and the first and second support rods are both arc-shaped.

[0009] In some embodiments, the first and second support rods are circular in cross section.

[0010] In some embodiments, the first clamping connector fixes the first support rod, and the second clamping connector fixes the second support rod.

[0011] In some embodiments, the first and second clamping connectors are arranged at the middle portions of the two support rods.

[0012] In some embodiments, an air bag is arranged on the support structure.

[0013] The connecting device provided by the utility model has the following advantages:

[0014] Compared with the existing rigid core mold, the design can better complete demolding, avoid damage to the interior of the pile body during demolding of the rigid core mold, and the problem of damage to the core mold; compared with the conventional air bag type core mold, the core mold is provided with a support frame structure, which avoids the problem that the air bag is easily deformed under the impact of concrete; most importantly, during pouring of concrete, the conventional air bag type core mold is impacted by the concrete and is deformed, resulting in uneven wall thickness of different parts of the poured hollow sheet pile, some parts are thick, and some parts are thin, which causes huge problems to the quality of the pile foundation and brings huge safety hazards to the use safety of the subsequent pile foundation; and the core mold of the utility model can effectively avoid the quality problem caused by deformation of the air bag due to the support frame arranged in the air bag, and effectively ensure the quality of the hollow sheet pile. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0016] Figure 1 It is a schematic view of a hollow sheet pile core mold provided by the utility model embodiment.

[0017] In the drawings:

[0018] 1, first main shaft; 2, second main shaft; 3, connecting shaft; 4, first support rod; 5, second support rod; 10, support structure; 41, first rotating bearing; 42, first clamping connector; 51, second rotating bearing; 52, second clamping connector. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0020] <Example 1>

[0021] like Figure 1 As shown, this embodiment provides a hollow sheet pile core mold, including a first main shaft 1 and a second main shaft 2 arranged in parallel. A plurality of connecting shafts 3 connecting the first main shaft 1 and the second main shaft 2 are arranged between the first main shaft 1 and the second main shaft 2. A first rotating bearing 41 and a second rotating bearing 51 are respectively arranged at both ends of the connecting shaft 3. The two rotating bearings are respectively connected by a first support rod 4 and a second support rod 5 to form a circular or elliptical support structure 10. A plurality of support structures 10 are arranged at intervals along the axial direction of the core mold. The first support rod 4 is located above the second support rod 5. The lower and upper parts of the plurality of support structures are respectively connected by a first snap-fit ​​connector 42 and a second snap-fit ​​connector 52.

[0022] In the above technical solution, before using the mandrel, all support structures 10 are rotated until their cross-sections are perpendicular to the plane formed by the first main shaft 1 and the second main shaft 2. Then, the first snap-fit ​​connector 42 and the second snap-fit ​​connector 52 are used to clamp all support structures from below and below the support mechanism, respectively. At the same time, elliptical fixing structures are used at both ends of the mandrel to secure the first main shaft 1, the second main shaft 2, the first snap-fit ​​connector 42, and the second snap-fit ​​connector 52, respectively, to prevent the support structures from rotating arbitrarily through the bearings, thus completing the assembly of the mandrel support frame. Then, the airbag is placed on the support structure. After the two ends of the airbag are compressed, air or water or other media are injected into the airbag to inflate and seal it, completing the assembly of the mandrel. The assembled mandrel is then used to cast hollow concrete sheet piles.

[0023] Once the sheet pile is poured and it is ready for demolding, the airbag is deflated, the fixing structures at both ends of the frame are removed, and the support structure is flattened by pulling the first snap-fit ​​connector 42 and the second snap-fit ​​connector 52. Then, the airbag is appropriately vacuumed, and the airbag and the support frame are pulled out together from the sheet pile cavity to achieve demolding.

[0024] Further, the connecting shaft 3 is cylindrical at both ends, the first rotating bearing 41 and the second rotating bearing 51 are sleeved on the cylindrical end portions, so that the rotating bearings can rotate conveniently. The first support rod member 4 and the second support rod member 5 are symmetrically arranged on both sides of the connecting shaft 3, and the first and second support rod members are arc-shaped, so that an elliptical or circular support mechanism can be formed. The first support rod member and the second support rod member are circular in cross section. The first clamping connector 42 fixes the first support rod member 4, and the second clamping connector 52 fixes the second support rod member 5, so that the first and second support rod members can move synchronously. The first and second clamping connectors are arranged at the middle portions of the two support rod members, so that the two support rod members can move more stably.

[0025] Compared with the existing rigid core mold, the design can better complete demolding, avoid damage to the interior of the pile body during demolding of the rigid core mold, and the problem of damage to the core mold; compared with the conventional air bag type core mold, the core mold is provided with a support frame structure, which avoids the problem that the air bag is easily deformed by the impact of concrete; most importantly, during the pouring of concrete, the conventional air bag type core mold is impacted by the concrete and is deformed, resulting in uneven wall thickness of the poured hollow sheet pile at different positions, some positions are thick, and some positions are thin, which causes great problems to the quality of the pile foundation and brings great safety hazards to the subsequent use safety of the pile foundation; and the core mold of the utility model can effectively avoid the quality problems caused by the deformation of the air bag and effectively ensure the quality of the hollow sheet pile.

[0026] The technical principle of the utility model is described above in combination with the specific embodiments, but it should be noted that the above description is only for explaining the principle of the utility model, and cannot be interpreted as a specific limitation on the protection scope of the utility model in any way. Based on the explanation herein, other specific embodiments or equivalent replacements of the utility model that can be thought of by those skilled in the art without creative labor will fall within the protection scope of the utility model.

Claims

1. An open web sheet pile core form, characterized by, The first main shaft and the second main shaft are arranged in parallel, and a plurality of connecting shafts connecting the first main shaft and the second main shaft are arranged between the first main shaft and the second main shaft, and first rotary bearings and second rotary bearings are arranged at two ends of the connecting shafts, respectively, the two rotary bearings are connected through first support rod members and second support rod members, respectively, to form a circular or elliptical support structure, a plurality of support structures are arranged at intervals along the axial direction of the core mold, the first support rod members are arranged above the second support rod members, and the lower parts and the upper parts of the plurality of support structures are connected through first clamping connectors and second clamping connectors, respectively.

2. The open web panel pile core form of claim 1, wherein, The two ends of the connecting shaft are cylindrical, and the first rotary bearing and the second rotary bearing are sleeved on the cylindrical end.

3. The open web panel pile core form of claim 2, wherein, The first support rod member and the second support rod member are symmetrically arranged on both sides of the connecting shaft, and the first support rod member and the second support rod member are both arc-shaped.

4. The open web panel pile core form of claim 3, wherein, The cross section of the first support rod member and the second support rod member is circular.

5. The open web panel pile core form of claim 4, wherein, The first clamping connector fixes the first support rod member, and the second clamping connector fixes the second support rod member.

6. The open web panel pile core form of claim 5, wherein, The first clamping connector and the second clamping connector are arranged at the middle parts of the two support rod members.

7. The open web panel pile core form of claim 1, wherein, An air bag is sleeved on the support structure.

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