A device for preventing leakage of concrete pouring of a hollow pile core

Abstract

The utility model provides a kind of auxiliary hollow pile core concrete pouring leak-proof device, including pedestal and multiple leak-proof components, pedestal is rotatably connected in the bottom plate of reinforcement structure, each leak-proof component includes transmission connecting rod and arc fan, the first end of transmission connecting rod is connected with arc fan, the second end of transmission connecting rod is rotatably connected with pedestal, the outspread or convergence of arc fan is adjusted by rotating pedestal, arc fan is used to shield the gap between bottom plate and hollow pile sidewall when outspread.The utility model has the beneficial effects that after reinforcement cage is fixed, arc fan is controlled to be unfolded by rotating pedestal, it is especially suitable for concrete large particle interception, reduces concrete leakage, and can also be used as auxiliary method to cooperate traditional filling air bag method, reduce air bag drop hidden danger, reduce concrete waste, improve construction economy.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, and in particular relates to a device for preventing grout leakage during the pouring of concrete in hollow pile cores. Background Technology

[0002] In existing technologies, the core reinforcement cage installed inside a hollow pile typically consists of core reinforcement bars, spiral stirrups, and a base plate. After the core reinforcement cage is fixed to the top of the hollow pile, concrete is poured (the space between the base plate and the bottom of the core may not need to be filled with concrete). However, due to the gap between the base plate and the core wall, concrete leaks into the bottom of the core during pouring, resulting in concrete waste. A traditional method to prevent leakage is to fill the space under the base plate with air-filled bags. However, these bags may shift downwards during pouring due to the increasing weight of the concrete, leading to increased concrete usage. The gap between the base plate and the core wall causes leakage, and the traditional method of using air-filled bags to cover the gap results in problems such as the bags shifting downwards during concrete pouring, leading to increased concrete usage. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an auxiliary device for preventing grout leakage during the pouring of hollow pile core concrete. It is particularly suitable for using the unfolded arc-shaped fan blades to help block the gap between the bottom plate and the side wall of the pile core, thus blocking large particles of concrete. It can also be combined with inflatable bags for multiple protection, reducing the risk of inflatable bags falling and reducing concrete waste.

[0004] The technical solution adopted by this utility model is: an auxiliary device for preventing grout leakage during concrete pouring of hollow pile cores. A steel reinforcement structure is set inside the hollow pile, including a base and multiple leak-proof components. The base is rotatably connected to the bottom plate of the steel reinforcement structure. Each leak-proof component includes a transmission connecting rod and an arc-shaped fan blade. The first end of the transmission connecting rod is connected to the arc-shaped fan blade, and the second end of the transmission connecting rod is rotatably connected to the base. The arc-shaped fan blade is adjusted to extend or retract by rotating the base. The arc-shaped fan blade is used to block the gap between the bottom plate and the side wall of the hollow pile when it extends.

[0005] Furthermore, multiple leak-proof components are divided into at least two groups and arranged at intervals along the axial direction of the base, and multiple arc-shaped fan blades are staggered in the circumferential direction.

[0006] Furthermore, each leak-proof component also includes a ring, and the second end of the transmission link is rotatably connected to the base via the ring.

[0007] Furthermore, it also includes a connecting plate and a first connecting assembly. The connecting plate and the base plate are spaced apart and connected by the first connecting assembly. The base is located between the connecting plate and the base plate and is rotatably connected to the connecting plate.

[0008] Furthermore, there are multiple first connecting components, which are disposed on the outer periphery of the base and are evenly distributed circumferentially with the center of the base as the axis. A transmission link is provided between each adjacent first connecting component to limit the deflection of the transmission link.

[0009] Furthermore, it also includes a drive rod, with a drive groove in the base, through which the drive rod can pass and be embedded in the drive groove, and the base can be rotated by rotating the drive rod.

[0010] Furthermore, the base is rotatably connected to the connecting plate via a second connecting component, and the drive groove has mounting holes for installing the second connecting component.

[0011] The advantages and positive effects of this utility model are as follows: After the steel cage is fixed, the arc-shaped fan blades are controlled to unfold by rotating the base, which is especially suitable for intercepting large concrete particles and reducing concrete leakage. It can also be used as an auxiliary method in conjunction with the traditional method of filling air bags to reduce the risk of air bags falling and reduce concrete waste. It has the advantages of simple structure, convenient construction and improved construction economy. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of an embodiment of the present invention and its assembly with a steel reinforcement structure;

[0013] Figure 2 This is a schematic diagram of the transmission connecting rod in one embodiment of the present invention;

[0014] Figure 3 This is a schematic diagram of the contraction of an arc-shaped fan blade according to one embodiment of the present invention;

[0015] Figure 4 This is a schematic diagram showing the connection between an embodiment of the present invention and the base plate;

[0016] Figure 5 This is a schematic diagram of the unfolded arc-shaped fan blade according to one embodiment of the present invention.

[0017] In the picture:

[0018] 1. Connecting plate; 2. Arc-shaped fan blade; 3. Transmission connecting rod; 4. Ring; 5. Base; 6. Second connecting assembly; 7. Base plate; 8. First connecting assembly; 9. Pile core reinforcement; 10. Spiral stirrup; 11. Control unit; 12. Embedded part; 51. Drive groove. Detailed Implementation

[0019] The embodiments of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar units or units having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that terms such as "installation", "connection", and "fixation" should be interpreted broadly, and can refer to direct connection, installation or fixation, or indirect connection, installation or fixation. This utility model does not limit this.

[0022] like Figures 1 to 5 As shown in the schematic diagram, this utility model provides an embodiment of an anti-leakage device for concrete pouring in hollow piles. A reinforcing steel structure (such as a reinforcing cage) connected within the hollow pile includes a base 5 and multiple anti-leakage components. The base 5 is rotatably connected to a support plate 7 of the reinforcing steel structure. Each anti-leakage component includes a transmission rod 3 and an arc-shaped fan blade 2. The first end of the transmission rod 3 is connected to the arc-shaped fan blade 2, and the second end is rotatably connected to the base 5. Rotating the base 5 adjusts the outward or retracted extension or retraction of the arc-shaped fan blade 2. The arc-shaped fan blade 2 is used to block the gap between the support plate 7 and the side wall of the hollow pile when extended. Preferably, the curvature of each arc-shaped fan blade 2 is adapted to the inner wall of the pile core. The reinforcing steel structure also includes core steel bars 9 and spiral stirrups 10. The core steel bars 9 are vertically arranged and connected to the top of the support plate 7. The spiral stirrups 10 are wound around the core steel bars 9. The core steel bars 9 are erected on the top of the hollow pile via a connecting frame, and the reinforcing steel structure is fixed within the core of the hollow pile.

[0023] The construction method of this utility model includes:

[0024] Assemble the base 5 and the support plate 7 to gather the multiple arc-shaped fan blades 2 together;

[0025] The assembled steel structure is hoisted into the hollow pile and fixed.

[0026] like Figure 3 As shown, the drive base 5 rotates in the direction of the arrow, and uses the weight of the arc-shaped fan blade 2 to make the arc-shaped fan blade 2 radially unfold through the transmission of the transmission link 3, that is, at least part of the arc-shaped fan blade 2 is thrown outward to unfold, and the arc-shaped fan blade 2 can contact the inner wall of the hollow pile.

[0027] When concrete is poured into the hollow pile, the arc-shaped fan blade 2 can cover the gap between the bottom plate 7 and the inner wall of the pile core, reducing grout leakage during the concrete pouring process.

[0028] Preferably, the step of hoisting and fixing the assembled steel reinforcement structure into the hollow pile includes: fixing the steel reinforcement structure to the top of the hollow pile and filling the bottom plate with an inflatable bag.

[0029] This embodiment is installed at the bottom of a reinforced concrete structure (such as a reinforcing cage), with a gap between the bottom of the reinforced concrete structure and the bottom of the pile core. After the reinforced concrete structure (such as the reinforcing cage) is fixed inside the hollow pile, multiple arc-shaped fan blades 2 can be deployed to cover the gap between the base plate 7 and the side wall of the pile core. Although in some construction scenarios, factors such as the surface morphology of the side wall may prevent multiple fan blades from completely covering all gaps, it can still effectively reduce concrete leakage, especially suitable for covering large-particle concrete. This embodiment can also be used as an auxiliary means. Before concrete pouring, air bags can be filled under the base plate 7. The arc-shaped fan blades 2 provide initial coverage, and the air bags provide secondary coverage. The arc-shaped fan blades 2, through the reinforced concrete structure, can ensure the vertical stability of the fixed position, better withstand the impact of concrete pouring, reduce the risk of the air bags falling due to the load, reduce concrete leakage, ensure concrete usage, and improve construction economy.

[0030] Preferably, the base 5 is circular, and the number of leak-proof components is N. The blade angle of each arc-shaped fan blade 2 is not less than 360° / N. The multiple leak-proof components are divided into M groups, where M is not less than 2, and the M groups are staggered along the axial direction of the base 5, where N and M are positive integers, and N ≥ M. In this embodiment, the number of leak-proof components is six, which are divided into upper and lower groups. The two groups are staggered along the axial direction of the base 5, and the blade angle of each arc-shaped fan blade 2 is 60°. By grouping and staggering along the axial direction, the arc-shaped fan blades 2 can cover more comprehensively in the circumferential direction, reducing leakage points and improving the leak-proof effect.

[0031] Each leak-proof component also includes a ring 4, and the second end of the transmission link 3 is rotatably connected to the base 5 via the ring 4. The connection via the ring 4 allows the transmission link 3 to rotate more flexibly, reduces wear, and extends its service life. In this embodiment, the center angle between adjacent rings 4 and the base 5 is 60°, and the top height of the ring 4 is no higher than that of the base 5.

[0032] The auxiliary hollow pile core concrete pouring anti-leakage device also includes a connecting plate 1 and a first connecting component 8. The connecting plate 1 and the base plate 7 are spaced apart and connected by the first connecting component 8. The base 5 is located between the connecting plate 1 and the base plate 7 and is rotatably connected to the connecting plate 1. The combination of the connecting plate 1, the first connecting component 8 and the base plate 7 provides stable support for the installation of the base 5 and also ensures smooth movement of the transmission linkage 3.

[0033] There are multiple first connecting components 8, which are disposed on the outer periphery of the base 5 and are evenly distributed circumferentially around the center of the base 5. A transmission link 3 is provided between each adjacent first connecting component 8 to limit the deflection of the transmission link 3. The first connecting components 8 not only serve as connecting members of the structure, but also limit the deflection of the transmission link 3, ensuring the reliability of the multiple arc-shaped fan blades 2 when they are deployed in coordination.

[0034] In different embodiments, the rotation of the base 5 can be automatically controlled or controlled by a drive rod. For example, the base 5 has a drive groove 51, and the drive rod can pass through the base plate 7 and be embedded in the drive groove 51. The rotation of the base 5 is controlled by rotating the drive rod. Preferably, the drive rod includes a control part 11 and an embedding part 12 connected to the bottom of the control part 11. The embedding part 12 is detachably connected to the base 5. The embedding part 12 has a protrusion. When the embedding part 12 is inserted into the drive groove 51, the protrusion matches the shape of the embedding groove to lock in place in the horizontal direction. The control part 11 is rotated, and the base 5 is rotated through the embedding part 12. The length of the drive rod is not less than the length of the core steel bar 9 in the reinforced concrete structure. Controlling the rotation of the base 5 by the drive rod is simpler, and personnel can operate from the top of the reinforced concrete structure, improving construction efficiency and ease of operation.

[0035] The base 5 is rotatably connected to the connecting plate 1 via the second connecting component 6, and the drive groove 51 has mounting holes for installing the second connecting component 6.

[0036] In one specific embodiment:

[0037] The first connecting component 8 includes a first screw, and the second connecting component 6 includes a second screw. The base 5 is rotatably connected to the connecting plate 1 via the second screw, and the connecting plate 1 is connected to the base plate 7 via the first screw. The assembly and fixing method of the screw is existing technology, such as cooperating with a nut, etc., which will not be described in detail in this utility model. The connecting plate 1 is a circular steel plate with a diameter 2cm smaller than the diameter of the pile core wall and a thickness of 3mm. A second mounting hole with a diameter of 4mm is opened in the center of the steel plate to install the second screw; a first mounting hole with a diameter of 10mm is opened at the center of the radius of the steel plate, and the number of first mounting holes is six, evenly distributed with the center of the steel plate. There are six arc-shaped fan blades 2, and the angle of each arc-shaped fan blade 2 is 60°. The arc-shaped fan blades 2 can also be made of steel plate with a thickness of 3mm and a width of 2cm. The radius of the arc-shaped fan blades 2 is the same as the radius of the pile core wall. The transmission connecting rod 3 is made of steel bar, with a hole with a diameter of 2mm at its second end, and its first end is welded to the arc-shaped fan blades 2 to form a whole to form a leak-proof component. The ring, 10mm in diameter, is welded to the base 5 at a corresponding position and connected to the hole in the transmission connecting rod 3. The base 5 is circular with a spline groove at its center. A third mounting hole, 4mm in diameter, is formed through the center of the spline groove. The second screw, 4mm in diameter and 2cm in length, passes through the third and second mounting holes and connects to the nut. The second screw is loosely tightened to allow the base 5 to rotate. The base plate 7 is circular with a 50mm diameter hole in its center for inserting the drive rod. The base plate 7 has circumferential holes corresponding to the first mounting holes for installing the first screw, which is 40mm long. The control part 11 of the drive rod can be made of a 20mm diameter steel rod, with an embedded part 12 welded to its bottom. The embedded part 12 serves as a spline shaft, with protrusions that fit the shape and size of the spline groove for rotating the base 5.

[0038] During pre-assembly, the base 5 is installed on the connecting plate 1 by the second screw. The second screw is loosely tightened to ensure that the base 5 can rotate. The connecting plate 1 is connected to the base plate 7 by the first screw. The control part 11 of the drive rod is placed into the spline groove of the base 5. The drive rod is rotated to retract each arc-shaped fan blade 2 so that the steel reinforcement structure can be placed into the core of the hollow pile.

[0039] The steel reinforcement structure is erected on top of the hollow pile and fixed. The control part 11 of the rotating drive rod throws out at least part of the arc-shaped fan blade 2 to unfold. The arc-shaped fan blade 2 can contact the pile wall, blocking the gap between the bottom plate 7 and the pile wall. Then the drive rod is pulled out for reuse.

[0040] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.

Claims

1. A device for preventing grout leakage during concrete pouring in hollow piles, wherein the hollow pile contains a reinforced steel structure, characterized in that: The device includes a base and multiple leak-proof components. The base is rotatably connected to a support plate of a reinforced steel structure. Each leak-proof component includes a transmission link and an arc-shaped fan blade. The first end of the transmission link is connected to the arc-shaped fan blade, and the second end of the transmission link is rotatably connected to the base. The arc-shaped fan blade can be adjusted to extend or retract by rotating the base. The arc-shaped fan blade is used to block the gap between the support plate and the side wall of the hollow pile when extended.

2. The anti-leakage device for auxiliary hollow pile core concrete pouring according to claim 1, characterized in that: The multiple leak-proof components are divided into at least two groups and arranged at intervals along the axial direction of the base, and the multiple arc-shaped fan blades are staggered in the circumferential direction.

3. The anti-leakage device for auxiliary hollow pile core concrete pouring according to claim 1, characterized in that: Each of the leak-proof components also includes a ring, and the second end of the transmission link is rotatably connected to the base through the ring.

4. The auxiliary hollow pile core concrete pouring anti-leakage device according to any one of claims 1-3, characterized in that: It also includes a connecting plate and a first connecting assembly, wherein the connecting plate is spaced apart from the base plate and connected by the first connecting assembly, and the base is disposed between the connecting plate and the base plate and is rotatably connected to the connecting plate.

5. The anti-leakage device for auxiliary hollow pile core concrete pouring according to claim 4, characterized in that: The number of the first connecting components is multiple, and the multiple first connecting components are disposed on the outer periphery of the base and are evenly distributed circumferentially with the center of the base as the axis. A transmission link is provided between each adjacent first connecting component to limit the deflection of the transmission link.

6. The anti-leakage device for auxiliary hollow pile core concrete pouring according to claim 4, characterized in that: It also includes a drive rod, and the base has a drive groove. The drive rod can pass through the base plate and be embedded in the drive groove. The rotation of the base is controlled by rotating the drive rod.

7. The anti-leakage device for auxiliary hollow pile core concrete pouring according to claim 6, characterized in that: The base is rotatably connected to the connecting plate via a second connecting component, and the drive slot has mounting holes for installing the second connecting component.

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