Anchored hoisting grouting embedded parts and grouting method for precast concrete components

Abstract

The present invention relates to a concrete precast component anchoring type hoisting grouting embedded part and a grouting method. The hoisting grouting embedded part includes an embedded part tube body and a grouting tube body connected to the embedded part tube body. The embedded part tube body is provided with a cavity for rotating and accommodating a T-shaped hoisting pin. The cavity is provided with a locking structure for automatically locking the cross bar of the T-shaped hoisting pin during the rotation of the T-shaped hoisting pin. The first end of the embedded part tube body is provided with an opening for inserting the T-shaped hoisting pin into the cavity and for connecting an external grouting pipe to the cavity. The first end of the grouting tube body is connected to the second end of the embedded part tube body and connected to the cavity. The second end of the grouting tube body is temporarily sealed. The present invention solves the technical problem of the complex connection between the pre-embedded hoist and the hoisting device and the separation from the grouting pipe. It also avoids the process of tightening bolts multiple times in traditional hoisting embedded parts. At the same time, the grouting tube body is combined with the embedded part body, and the construction of hoisting and grouting is realized at the same time.

Description

Technical Field

[0001] The present invention relates to the field of building construction, and in particular to an anchoring type hoisting grouting embedded part of a prefabricated concrete component and a grouting method. Background Art

[0002] Reinforced concrete structures are classified into two categories: cast-in-place monolithic reinforced concrete structures and prefabricated monolithic reinforced concrete structures. Prefabricated monolithic structures involve mechanically assembling various precast reinforced concrete components and assembling them according to design requirements. The prefabricated component manufacturing process includes the fabrication and installation of formwork, the fabrication and installation of rebar, the preparation and transportation of concrete, the pouring, vibration, and curing of components, and demolding and stacking.

[0003] As an important connection mechanism in the lifting and transportation of prefabricated components, the lifting system needs to have a strong and stable structural strength as a guarantee. Most prefabricated component lifting systems act on the interior of the component. The working principle is to embed lifting devices or embedded bolt sleeves in the mold or concrete, and use the locking force of the bolt threads and the internal friction between the embedded parts and the concrete to perform lifting and transportation operations. However, this structure is complicated to connect with the lifting device, making the connection and disassembly operations inefficient, affecting the construction progress. In addition, the embedded parts and grouting pipes in the existing technology are set separately, which greatly increases the difficulty and cost of construction. More structures embedded in the prefabricated components will also affect the strength of the prefabricated components. Summary of the Invention

[0004] In response to the above-mentioned shortcomings in the existing technology, the present invention provides a concrete precast component anchored lifting grouting embedded part and a grouting method, which solves the technical problem in the existing technology that the pre-embedded lifting device is complicated to connect with the lifting device and is separated from the grouting pipe.

[0005] In the first aspect, the present invention discloses an anchored hoisting grouting embedded part for a precast concrete component, comprising an embedded part tube body and a grouting tube body docked with the embedded part tube body, the interior of the embedded part tube body is provided with a cavity for rotating and accommodating a T-shaped hoisting pin, the cavity is provided with a locking structure for automatically locking the cross bar of the T-shaped hoisting pin during the rotation of the T-shaped hoisting pin, the first end of the embedded part tube body is provided with an opening for inserting the T-shaped hoisting pin into the cavity and for connecting an external grouting pipe to the cavity, the first end of the grouting tube body is connected to the second end of the embedded part tube body and connected to the cavity, and the second end of the grouting tube body is temporarily sealed.

[0006] The anchoring hoisting grouting embedded part of the precast concrete component of the present invention is further improved in that the locking structure is two protrusions arranged oppositely in the cavity, and the diagonal sides of the two protrusions are provided with locking grooves for the crossbar of the T-shaped hoisting pin to be clamped into.

[0007] The anchored hoisting grouting embedded parts of the concrete precast component of the present invention are further improved in that the locking structure includes a baffle having a strip hole and fixed to the opening, and two arched plates fixed to the baffle and extending vertically into the cavity with a cross bar for limiting the T-shaped hoisting pin. The two arched plates are respectively arranged on both sides of the opening along the length direction of the strip hole. The strip hole is connected to the opening. The length of the strip hole is not less than the length of the cross bar of the T-shaped hoisting pin, and the width of the strip hole is greater than the width of the cross bar of the T-shaped hoisting pin and less than the length of the cross bar of the T-shaped hoisting pin.

[0008] A further improvement of the anchoring hoisting grouting embedded part for precast concrete components of the present invention is that the second end of the embedded part tube body extends toward the periphery and forms an anchoring reinforcement ring.

[0009] A further improvement of the anchored hoisting grouting embedded part for precast concrete components of the present invention is that the first end of the embedded part tube body extends axially outward to form an extended tube section, and the inner passage of the extended tube section forms the opening.

[0010] The present invention provides a further improvement in the anchored hoisting grouting embedded part for precast concrete components in that a plurality of reinforcing ribs are fixed at intervals on the outer periphery of the embedded part tube body, the first ends of the reinforcing ribs are fixed to the anchoring reinforcement ring, and the second ends of the reinforcing ribs are flush with the end of the extension section.

[0011] A further improvement of the anchoring hoisting grouting embedded part for precast concrete components of the present invention is that an outer peripheral surface of the embedded part tube body is provided with an anchoring thread.

[0012] In a second aspect, the present invention further provides a method for grouting using a precast concrete component, comprising the following steps:

[0013] Pre-embedded anchoring hoisting grouting embedded parts of precast concrete components at preset positions of precast concrete components;

[0014] Inserting a T-shaped lifting latch connected to the lifting equipment from the opening into the cavity in the embedded tube body, and rotating the T-shaped lifting latch until the crossbar of the T-shaped lifting latch is locked by the locking structure;

[0015] After the precast concrete component is hoisted to the second end of the grouting pipe body facing the area to be grouted by using the T-shaped hoisting pin, the T-shaped hoisting pin is rotated in the opposite direction until the cross bar of the T-shaped hoisting pin is unlocked, and the T-shaped hoisting pin is removed;

[0016] Opening up the second end of the grouting pipe body to connect the grouting pipe body to the area to be grouting;

[0017] Connecting a grouting pipe to the opening of the embedded pipe body;

[0018] The area to be grouting is grouted until the grouting is completed.

[0019] Compared with the existing technology, the present invention has a positive and obvious effect. The present invention solves the technical problem of the existing technology that the pre-embedded lifting device is complicated to connect with the lifting device and is separated from the grouting pipe by combining the embedded pipe body and the grouting pipe body. The device adopts the structural form of internal groove to realize the connection with the T-shaped lifting pin after rotation, avoiding the traditional process of tightening the bolts with multiple turns, simplifying the lifting operation process, improving the lifting construction efficiency, and combining the grouting pipe body with the embedded part body to realize the construction of lifting and grouting at the same time, reducing unnecessary construction processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 The three-dimensional anchoring hoisting grouting embedded part of the concrete prefabricated component of the present invention Figure 1 .

[0022] Figure 2 It is a cross-sectional view of the anchored hoisting grouting embedded part of the prefabricated concrete component of the present invention.

[0023] Figure 3 The three-dimensional anchoring hoisting grouting embedded part of the concrete prefabricated component of the present invention Figure 2 . DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figures 1 to 3As shown, the present invention provides an anchored hoisting grouting embedded part for a precast concrete component, comprising an embedded part tube body 1 and a grouting tube body 2 docked with the embedded part tube body 1, the interior of the embedded part tube body 1 is provided with a cavity for rotating and accommodating a T-shaped hoisting pin, the cavity is provided with a locking structure 104 for automatically locking the cross bar of the T-shaped hoisting pin during the rotation of the T-shaped hoisting pin, the first end of the embedded part tube body 1 is provided with an opening for inserting the T-shaped hoisting pin into the cavity and for connecting an external grouting pipe to the cavity, the first end of the grouting tube body 2 is connected to the second end of the embedded part tube body and connected to the cavity, and the second end of the grouting tube body 2 is temporarily sealed. In this embodiment, the embedded part body is truncated cone-shaped, and the diameter is smaller near the outside and larger away from the outside, so as to prevent it from falling off during lifting. The entire lifting embedded part is made of metal and is integrally formed. When it is hoisted and used, the lifting embedded part is fixed on the mold and sealed to prevent concrete from entering the embedded part during concrete pouring and affecting the stability of subsequent lifting operations. When the strength of the prefabricated concrete component reaches the designed lifting strength, the T-shaped lifting pin is aligned with the hollow cavity of the lifting embedded part and rotated to tighten it. Lifting can be carried out only after ensuring that the pin cannot be easily pulled out. The second end seal of the grouting pipe body 2 can ensure that concrete will not penetrate into the cavity when the prefabricated component is poured with concrete. When grouting is required, the sealing position is opened to form a grouting pipe. The embedded part tube body 1 and the grouting pipe body 2 are connected by a threaded connection. The lifting embedded part is integrally formed and anchored in the concrete. It has high strength, simple structure and convenient operation.

[0026] Preferably, the locking structure 104 is two protrusions relatively arranged in the cavity, and the diagonal sides of the two protrusions are provided with locking grooves for the cross bar of the T-shaped lifting pin to be inserted into, so that the cross bar of the T-shaped lifting pin is always located at the midpoint of the arc groove during lifting, avoiding horizontal displacement, and making it difficult for the T-shaped lifting pin to fall out during the lifting process, thereby improving the safety of the lifting operation.

[0027] Preferably, Figure 2 and Figure 3As shown, the locking structure includes a baffle having a strip hole and fixed to the opening, and two arched plates fixed to the baffle and extending vertically into the cavity with a cross bar for limiting the T-shaped hanging pin. The two arched plates are respectively arranged on both sides of the opening along the length direction of the strip hole. The strip hole is connected to the opening. The length of the strip hole is not less than the length of the cross bar of the T-shaped hanging pin, and the width of the strip hole is greater than the width of the cross bar of the T-shaped hanging pin and less than the length of the cross bar of the T-shaped hanging pin. The cavity near the top is a long strip opening with narrower sides. The narrower areas on both sides are baffles, which extend into the cavity to form two arched plates for locking the cross bars of the T-shaped lifting pin. The cavity near the bottom is a cylindrical cavity. The inner diameter of the embedded tube body 1 allows the T-shaped lifting pin to be smoothly inserted into the cavity in the embedded body, and by rotation, the cross bars of the T-shaped lifting pin are stuck in the arched plates, which facilitates installation and disassembly and lifting operations.

[0028] Preferably, the second end of the embedded tube body 1 extends outward to form an anchor reinforcement ring 101. This circular anchor reinforcement ring 101 anchors and stabilizes the structure in the concrete, preventing the embedded tube body 1 from being pulled out of the prefabricated component due to stress during installation. Furthermore, the grouting tube body 2 also has an anchor reinforcement ring 101 extending outward.

[0029] Preferably, the first end of the embedded tube body 1 extends axially outward to form an extended tube section, and the inner channel of the extended tube section is formed as the opening, thereby facilitating the connection between the grouting pipe and the embedded tube body 1. The internally threaded tube mouth is close to the template during the process of prefabricated component production, thereby achieving sealing of the tube mouth through the template, preventing the concrete of the cast prefabricated component from seeping into the embedded tube body 1 and the grouting tube body 2.

[0030] Preferably, Figure 3 As shown, multiple reinforcing ribs 102 are fixed at intervals around the outer periphery of the embedded tube body 1. The first ends of the reinforcing ribs 102 are fixed to the anchor reinforcement ring 101, and the second ends of the reinforcing ribs 102 are flush with the end of the extension section 105. The reinforcing ribs 102 can effectively offset the force that causes the embedded part to bend when the lifting angle is offset, preventing the embedded part from being damaged over time. The second ends of the reinforcing ribs 102 are flush with the top of the embedded tube body 1 to facilitate installation and positioning on the steel mold 3. Before installing the steel mold 3, a positioning groove for the second ends of the reinforcing ribs 102 to snap into can be provided on the steel mold 3. In this embodiment, there are four reinforcing ribs 102, which are symmetrically arranged in a cross shape around the outer periphery of the embedded body, with two opposing reinforcing ribs 102 flush with the ends of the extension section 105. The four reinforcing ribs 102 can effectively offset the bending force of the embedded parts when the lifting angle is offset from four directions, and make the entire lifting embedded parts evenly stressed.

[0031] Preferably, the outer peripheral surface of the embedded pipe body 1 is provided with an anchoring thread 103. The anchoring thread 103 acts similarly to a screw thread in the concrete, thereby enhancing the friction between the embedded part and the concrete. Furthermore, the outer surface of the grouting pipe body 2 is also provided with an anchoring thread 103.

[0032] On the other hand, the present invention also provides a method for grouting using a precast concrete component, comprising the following steps:

[0033] Pre-embedding the above-mentioned anchoring hoisting grouting embedded parts of the precast concrete components at the preset positions of the precast concrete components;

[0034] Insert a T-shaped lifting pin connected to the lifting equipment from the opening into the cavity in the embedded pipe body 1, and rotate the T-shaped lifting pin until the crossbar of the T-shaped lifting pin is locked by the locking structure;

[0035] After the precast concrete component is hoisted to the second end of the grouting pipe body 2 facing the area to be grouted by using the T-shaped hoisting pin, the T-shaped hoisting pin is rotated in the opposite direction until the cross bar of the T-shaped hoisting pin is unlocked, and the T-shaped hoisting pin is removed;

[0036] Open the second end of the grouting pipe 2 to connect the grouting pipe 2 to the area to be grouting;

[0037] Connecting the grouting pipe to the opening of the embedded pipe body 1;

[0038] The area to be grouting is grouted until the grouting is completed.

[0039] This device is first embedded inside a prefabricated concrete component. After the strength of the prefabricated component reaches the required level, it is hoisted to the installation location through the embedded tube body 1. In this embodiment, the prefabricated concrete component is a tunnel segment. The pipe mouth of the embedded tube body 1 is located on the inner side of the segment, and the grouting tube body 2 is located near the outer side. After the strength of the tunnel segment reaches the required level, the tunnel segment is hoisted and installed to the inner wall of the tunnel. When the grouting tube body 2 is opened, both sides of the segment are completely opened at the same time, so that the grouting pipe is connected to the inner side of the segment through the pipe mouth of the embedded tube body 1, and injected along the embedded tube body 1 and the grouting tube body 2 into the space between the segment and the inner wall of the tunnel until the grouting is completed. This method uses an integrated embedded tube body 1 and grouting tube body 2 to jointly realize the functions of hoisting and grouting, which greatly improves construction efficiency while ensuring the strength of the prefabricated component.

[0040] The present invention solves the technical problem of the existing technology that the pre-embedded lifting device is complicated to connect with the lifting device and is separated from the grouting pipe by combining the embedded pipe body and the grouting pipe body. The device adopts the structural form of internal groove to achieve the locking connection with the T-shaped lifting pin after rotation. This avoids the traditional process of tightening the bolts with multiple turns, which is mostly used in lifting embedded parts. It simplifies the lifting operation process and improves the efficiency of the lifting construction. At the same time, the grouting pipe body is combined with the embedded part body to realize the construction of lifting and grouting at the same time, reducing unnecessary construction steps.

[0041] The parts not mentioned in the present invention are the same as the existing technology or can be implemented by using the existing technology. The above description is only the preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as the preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to the equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A concrete precast component anchoring hoisting grouting embedded part, characterized in that: The invention comprises an embedded tube body and a grouting tube body docked with the embedded tube body, wherein a cavity is provided inside the embedded tube body for rotating and accommodating a T-shaped lifting pin, and a locking structure is provided in the cavity for automatically locking a cross bar of the T-shaped lifting pin during the rotation of the T-shaped lifting pin. An opening is provided at the first end of the embedded tube body for inserting the T-shaped lifting pin into the cavity and for connecting an external grouting pipe to the cavity. The first end of the grouting tube body is connected to the second end of the embedded tube body and connected to the cavity, and the second end of the grouting tube body is temporarily sealed. The locking structure includes a baffle having a strip-shaped hole and fixed to the opening, and two arched plates fixed to the baffle and extending vertically into the cavity with a crossbar for limiting the T-shaped hanging pin, the two arched plates being arranged on both sides of the opening along the length direction of the strip-shaped hole, the strip-shaped hole being connected to the opening, the length of the strip-shaped hole being not less than the length of the crossbar of the T-shaped hanging pin, and the width of the strip-shaped hole being greater than the width of the crossbar of the T-shaped hanging pin and less than the length of the crossbar of the T-shaped hanging pin; The second end of the embedded tube body extends toward the periphery and forms an anchor reinforcement ring; The first end of the embedded tube body extends outwardly in the axial direction to form an extended tube section, and the inner passage of the extended tube section forms the opening; A plurality of reinforcing ribs are fixed at intervals on the periphery of the embedded pipe body, wherein the first ends of the reinforcing ribs are fixed to the anchor reinforcement ring, and the second ends of the reinforcing ribs are flush with the end of the extension pipe section; Anchor threads are provided on the outer circumference of the embedded tube body.

2. The anchoring hoisting grouting embedded part of the precast concrete component according to claim 1 is characterized in that: The locking structure is two protrusions arranged opposite to each other in the cavity, and a locking groove for the cross bar of the T-shaped hanging pin to be clamped is provided on the diagonal side of the two protrusions.

3. A method for grouting using precast concrete components, characterized in that: The steps include: Pre-embedding the precast concrete component anchoring hoisting grouting embedded part according to claim 1 at a preset position of the precast concrete component; Inserting a T-shaped lifting pin connected to the lifting equipment from the opening into the cavity in the embedded tube body, and rotating the T-shaped lifting pin until the crossbar of the T-shaped lifting pin is locked by the locking structure; After the precast concrete component is hoisted to the second end of the grouting pipe body facing the area to be grouted by using the T-shaped hoisting pin, the T-shaped hoisting pin is rotated in the opposite direction until the cross bar of the T-shaped hoisting pin is unlocked, and the T-shaped hoisting pin is removed; Opening up the second end of the grouting pipe body so that the grouting pipe body is connected to the area to be grouting; Connecting a grouting pipe to the opening of the embedded pipe body; Grouting is performed on the area to be grouting until the grouting is completed.

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