CN114837309A - Connector, end plate of precast concrete member and method of use - Google Patents

Abstract

The invention provides a connecting piece of a precast concrete member, which comprises an inner connecting fastener, a bolt and a nut, wherein the inner connecting fastener is positioned on the inner side of the precast concrete member and is used for connecting end plates of adjacent precast concrete members, a through hole is formed in the inner connecting fastener, and the tail part of the bolt sequentially and transversely penetrates through the through hole and the end plates from the inner side to the outer side and is connected with the nut so as to fix the inner connecting fastener. The connecting piece can connect the precast concrete members from the inner side, and overcomes the technical obstacle that the precast concrete members cannot be connected from the inner side due to insufficient space.

Description

Connector, end plate of precast concrete member and method of use

technical field

The invention relates to the field of construction, in particular to a connector, an end plate of a prefabricated concrete component and a method of using the same.

Background technique

Precast concrete components are building materials produced in factories and have good mechanical properties. When using precast concrete components for foundation or house construction, it is beneficial to environmental protection and to improve construction speed.

During building construction, the connection between precast concrete elements is indispensable. Adjacent precast concrete members are generally connected on the outside of the precast concrete members by welding or by connecting pieces. Existing connectors are generally in the form of clamps or connecting seats provided on the precast concrete members, and then the adjacent precast concrete members are connected by bolts.

Since precast concrete elements are generally larger in size in the length direction, there is not enough space for connections on the inner side of the precast concrete elements. In view of this, a connector, an end plate of a precast concrete component and a method of using the same are developed.

SUMMARY OF THE INVENTION

The present invention aims to solve at least one of the technical problems existing in the prior art. The invention provides a connector, an end plate of a precast concrete member and a method of using the same, which can connect adjacent precast concrete members from the inside.

The present invention provides a connector of a precast concrete member, comprising an inner connection fastener, a bolt and a nut, the inner connection fastener is located on the inner side of the precast concrete member and used for connecting the end plates of adjacent precast concrete members, the inner connection The fastener is provided with a through hole, and the tail portion of the bolt transversely passes through the through hole and the end plate in sequence from the inner side to the outer side, and is connected with the nut to fix the inner connection fastener.

According to some embodiments of the present invention, the inner connecting fastener is provided with a clamping groove, and the clamping groove is used to clamp the end plates of the adjacent precast concrete members.

According to some embodiments of the present invention, guide surfaces are provided at the upper and lower ends of the engaging groove.

According to some embodiments of the present invention, the guide surface is a plane, and the included angle between the guide surface and the horizontal direction is α, and the range of α is 20°-30°.

According to some embodiments of the present invention, the bolt includes a non-threaded section near the head and a threaded section near the tail, and the shape of the through hole is adapted to the shape of the non-threaded section.

According to some embodiments of the present invention, the shape of the non-threaded segment is square.

According to some embodiments of the present invention, the outer side of the precast concrete member is provided with external connection fasteners to enhance connection strength.

The present invention also provides an end plate of a prefabricated concrete member, comprising an end plate main body, and a groove is provided on the end plate main body. The main body of the end plate is used for connecting with the connector of the above-mentioned precast concrete member.

The present invention also provides a method for using the connector of the precast concrete member and the end plate, comprising the following steps;

S01: Pass the tail of the bolt through the through hole, so that the head of the bolt is close to the inner connecting fastener;

S02: Place the bolts in the grooves of the end plates, and when the inner connecting fasteners are suspended and the precast concrete members above fall, ensure that the inner connecting fasteners are connected to the end plates of the falling precast concrete members above. no interference;

S03: drop the upper precast concrete member, so that the end plate of the upper precast concrete member is in close contact with the end plate of the lower precast concrete member;

S04: Pull the bolt on the outer side of the precast concrete member, so that the inner connecting fastener hoops the end plate of the precast concrete member above and the end plate of the precast concrete member below;

S05: Screw the nut into the tail of the bolt on the outer side of the precast concrete member, so that the nut is tightly attached to the outer side wall of the precast concrete member.

According to some embodiments of the present invention, in step S05, before the nut is screwed into the tail of the bolt, the outer connection fastener is installed at the tail of the bolt, so that the outer connection fastener is in close contact with the prefabricated fastener. the outer side wall of the concrete member, and then tighten the nut to make the nut close to the outer connecting fastener.

The present invention has at least the following technical effects:

1. The connector of the precast concrete member according to the embodiment of the present invention includes inner connecting fasteners, bolts and nuts, which can connect the precast concrete members from the inside, overcoming the inability to connect the precast concrete members from the inside due to insufficient space. technical barriers.

2. The connector of the precast concrete component of the embodiment of the present invention, the bolt includes a non-threaded section near the head and a threaded section near the tail, the non-threaded section and the through hole cooperate with the limit bolt to prevent the bolt from rotating, and the threaded section is used for The nut is connected to fix the inner connection fastener for easy connection.

Description of drawings

1 is a schematic diagram of a connector according to an embodiment of the present invention;

2 is a schematic front view of an inner connecting fastener according to an embodiment of the present invention;

3 is a schematic diagram of an end plate according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of the state before the connector is connected to the adjacent precast concrete members according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of the state of the connector after connecting adjacent precast concrete members according to an embodiment of the present invention;

6 is a schematic diagram of the state before the connector is connected to the adjacent precast concrete members when the external connection fastener is added according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of the state after the connector is connected to the adjacent precast concrete members when an external connection fastener is added according to an embodiment of the present invention.

Reference numerals: inner connection fastener 100, through hole 110, snap groove 120, guide surface 121, bolt 200, non-threaded section 210, threaded section 220, nut 300, outer connection fastener 400, end plate body 500, Groove 510.

Detailed ways

The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the present disclosure as defined by the claims and their equivalents. The description includes various specific details to aid in understanding, but these should be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration only and not for the purpose of limiting the present disclosure as defined by the appended claims and their equivalents.

It is to be understood that the singular form "a" includes the plural reference unless the context clearly dictates otherwise. Thus, for example, reference to "a component surface" includes reference to one or more of such surfaces.

The terms "have", "may have", "include" or "may include" as used in various embodiments of the present disclosure indicate the presence of the corresponding disclosed function, operation, element, etc., but do not limit additional one or more functions, actions, elements, etc.

Furthermore, it should be understood that the terms "comprising" or "having" used in various embodiments of the present disclosure are intended to indicate the presence of features, numbers, operations, elements, components or combinations thereof described in the specification, but do not exclude a or the presence or addition of multiple other features, numbers, operations, elements, components, or combinations thereof.

The prefabricated concrete components referred to in the present invention at least include circular pipe piles, square piles, bamboo joint piles, sheet piles, hexagonal piles and various special-shaped piles and the like.

As shown in FIG. 1 and FIG. 2 , the present invention provides a connector for a precast concrete member, including an inner connection fastener 100 , a bolt 200 and a nut 300 , and the inner connection fastener 100 is located on the inner side of the precast concrete member and is used to connect adjacent The end plate of the precast concrete member, the inner connecting fastener 100 is provided with a through hole 110 , and the tail of the bolt 200 transversely passes through the through hole 110 and the end plate from the inside to the outside and is connected with the nut 300 to fix the inner connecting fastener 100 . The connector of the present invention can connect the precast concrete members from the inside, and overcomes the technical obstacle that the precast concrete members cannot be connected from the inside due to insufficient space.

In some embodiments, the inner connecting fastener 100 is provided with a clamping groove 120, and the clamping groove 120 is used to clamp the end plates of the adjacent precast concrete members. The end plate of the precast concrete member above and the end plate of the precast concrete member below are both clamped into the engaging grooves 120 .

In order to facilitate both the end plate of the precast concrete member above and the end plate of the precast concrete member below be clamped into the clamping groove 120 , guide surfaces 121 are provided at the upper and lower ends of the clamping groove 120 . The guide surface 121 may be a plane or a regular arc surface. Preferably, the guide surface 121 is a plane, and the included angle between the guide surface 121 and the horizontal direction is α, and α is in the range of 20°-30°. The specific value can be 20°, 23°, 25°, 28° or 30°, etc.

In certain embodiments, the bolt 200 includes a non-threaded section 210 near the head and a threaded section 220 near the tail, and the shape of the through hole 110 is adapted to the shape of the non-threaded section 210 . The non-threaded section 210 cooperates with the through hole 110 to limit the bolt 200 to prevent the bolt 200 from rotating. The shape of the non-threaded section 210 may be a regular polygon, a rectangle or a special shape. Preferably, the non-threaded segment 210 is square. The threaded section 220 is used for connecting with the nut 300 to fix the inner connecting fastener 100 .

In order to increase the connection strength of the upper end plate of the precast concrete member and the end plate of the lower precast concrete member, in some embodiments, the outer side of the precast concrete member is provided with an outer connection fastener 400 to strengthen the connection strength.

As shown in FIG. 3 , the present invention also provides an end plate of a precast concrete member. The end plate of the precast concrete member is used in combination with the above-mentioned connector of the precast concrete member, and includes an end plate main body 500, and the end plate main body 500 is provided with a concave Slot 510. The grooves 510 penetrate through the end plate body 500 , the number of the grooves 510 may be 2-8, and the grooves 510 are distributed in a circular array on the end plate body 500 . In specific use, one of the upper precast concrete member and the lower precast concrete member may use an end plate with a groove 510, and the other may use a normal end plate; or both the upper precast concrete member and the lower precast concrete member are With an end plate with grooves 510 , the height of the grooves 510 should be half the height of the non-threaded section 210 when the second method is used.

In addition, the groove 510 can also be replaced by a through hole penetrating the end plate main body 500 transversely, as long as the bolt 200 can be smoothly passed through the end plate main body 500 and connected to the nut 300; The shape can be round, square or other shapes.

As shown in FIGS. 4-7 , the present invention also provides a method for using the connector and the end plate of the precast concrete member, including the following steps;

S01: Pass the tail of the bolt 200 through the through hole 110, so that the head of the bolt 200 is close to the inner connecting fastener 100;

S02: Place the bolt 200 in the groove 510 of the end plate, when the inner connecting fastener 100 is suspended and the precast concrete member above it falls, ensure that the inner connecting fastener 100 does not occur with the end plate of the falling precast concrete member above. put one's oar in;

S03: drop the upper precast concrete member, so that the end plate of the upper precast concrete member is in close contact with the end plate of the lower precast concrete member;

S04: Pull the bolt on the outer side of the precast concrete member, so that the inner connecting fastener 100 hoops the end plate of the precast concrete member above and the end plate of the precast concrete member below;

S05: Screw the nut 300 into the tail of the bolt 200 on the outer side of the precast concrete member, so that the nut 300 is tightly attached to the outer side wall of the precast concrete member.

In order to further enhance the connection strength of the end plate of the precast concrete member above and the end plate of the precast concrete member below and to make the force on both sides of the inner and outer sides more balanced after the precast concrete members are connected; At the same time, the end plate can be welded on the outside of the precast concrete element. When the side wall of the end plate protrudes from the concrete side wall, in step S05, before screwing the nut 300 into the tail of the bolt 200, the outer connecting fastener 400 can be installed at the tail of the bolt 200, and the outer connecting fastener 400 The hole on the upper part can be a circular through hole, so that the outer connecting fastener 400 can be smoothly installed from the tail of the bolt 200 and stick to the outer side wall of the precast concrete member, and then tighten the nut 300 to make the nut 300 close to the outer connecting buckle. 400 pieces.

The above content is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art to which the present invention pertains, some simple deductions or substitutions can be made without departing from the concept of the present invention.

Claims (10)

1. A connector for a precast concrete member, characterized in that it comprises an inner connection fastener (100), a bolt (200) and a nut (300), and the inner connection fastener (100) is located on the inner side of the precast concrete member and is used for Connecting the end plates of adjacent precast concrete members, the inner connecting fastener (100) is provided with a through hole (110), and the tail of the bolt (200) transversely passes through the through hole (110) sequentially from the inner side to the outer side ) and the end plate and the nut (300) are connected to fix the inner connecting fastener (100). 2 . The connector of a precast concrete member according to claim 1 , wherein the inner connecting fastener ( 100 ) is provided with a clamping groove ( 120 ), and the clamping groove ( 120 ) is used to clamp End plates of adjacent precast concrete elements. 3 . The connector of the precast concrete member according to claim 2 , wherein the upper and lower ends of the snap groove ( 120 ) are provided with guide surfaces ( 121 ). 4 . The connector of the precast concrete member according to claim 3, characterized in that: the guide surface (121) is a plane, the angle between the guide surface (121) and the horizontal direction is α, and the range of α is 20°-30°. 5. The connector for precast concrete components according to claim 1, wherein the bolt (200) comprises a non-threaded section (210) near the head and a threaded section (220) near the tail, The shape of the hole (110) is adapted to the shape of the non-threaded section (210). 6. The connector of a precast concrete member according to claim 5, wherein the non-threaded section (210) has a square shape. 7 . The connector of the precast concrete member according to claim 1 , characterized in that: the outer side of the precast concrete member is provided with an outer connection fastener ( 400 ) that strengthens the connection strength. 8 . 8. An end plate of a precast concrete member, characterized in that it comprises an end plate main body (500), a groove (510) is provided on the end plate main body (500), and the end plate main body (500) is used for connecting with the end plate main body (500). The connecting piece of the precast concrete component described in any one of claims 1-7 is connected. 9. The using method of the connector and the end plate of the precast concrete member according to any one of claims 1-7, characterized in that: comprising the following steps; S01: Pass the tail of the bolt (200) through the through hole (110), so that the head of the bolt (200) is close to the inner connecting fastener (100); S02: Place the bolts (200) in the grooves (510) of the end plates, and ensure that the inner connection fasteners (100) are suspended in the air and the precast concrete member above falls. ) does not interfere with the end plates of the falling precast concrete elements above; S03: drop the upper precast concrete member, so that the end plate of the upper precast concrete member is in close contact with the end plate of the lower precast concrete member; S04: Pull the bolt on the outside of the precast concrete member, so that the inner connecting fastener (100) hoops the end plate of the precast concrete member above and the end plate of the precast concrete member below; S05: Screw the nut (300) into the tail of the bolt (200) on the outer side of the precast concrete member, so that the nut (300) is in close contact with the outer side wall of the precast concrete member. 10. The method for using the connector and the end plate of a precast concrete member according to claim 9, wherein in step S05, the nut (300) is screwed into the front of the tail of the bolt (200). , install the outer connection fastener (400) at the tail of the bolt (200), make the outer connection fastener (400) close to the outer side wall of the precast concrete member, and then tighten the nut (300) to make the The nut (300) is in close contact with the outer connecting fastener (400).

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