CN114837310A - Connector, end plate and method of use of fully threaded precast concrete member - Google Patents

Abstract

The invention provides a connector of a fully threaded prefabricated concrete member, comprising an inner connection fastener, a bolt and a support nut. The fastener is provided with a threaded hole, the screw of the bolt is fully threaded, and the tail of the bolt transversely passes through the support nut and the end plate from the outside to the inside and is threadedly connected with the threaded hole of the inner connecting fastener. The connecting piece of the present invention 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 and method of use of fully threaded precast concrete member

technical field

The invention relates to the field of construction, in particular to a connector, an end plate of a fully threaded prefabricated concrete component and a method for 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 fully threaded precast concrete member 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 and a using method of a fully threaded precast concrete member, which can connect adjacent precast concrete members from the inside.

The invention provides a connector of a fully threaded precast concrete member, comprising an inner connection fastener, a bolt and a support 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 fastener is provided with a threaded hole, the screw of the bolt is of a fully threaded type, and the tail of the bolt transversely passes through the support nut and the end plate from the outer side to the inner side and connects with the inner connection fastener. Threaded connection of threaded holes of parts.

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, both upper and lower ends of the engaging groove are provided with guide surfaces.

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 outer side of the precast concrete member is provided with external connection fasteners to enhance connection strength.

According to some embodiments of the present invention, the outer connecting fastener is provided with a circular through hole through which the bolt passes.

According to some embodiments of the present invention, the outer connecting fastener is provided with a second engaging groove, and both upper and lower ends of the second engaging groove are provided with second guide surfaces.

The present invention also provides an end plate of a fully threaded prefabricated concrete member, comprising an end plate main body, and a groove is provided on the end plate main body.

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

S01: screw in the support nut from the bottom of the bolt and screw it to a position close to the head of the bolt;

S02: Screw the inner connecting fastener into the position of the tail of the bolt, so that the distance between the inner connecting fastener and the support nut is greater than the outer diameter of the end plate of the precast concrete member;

S03: Place the connector of the above-mentioned assembled fully threaded precast concrete member in the groove of the lower end plate, so that the inner connection fastener is located on the inner side of the precast concrete member and the upper precast concrete member falls when it falls. The end plate does not interfere with the inner connecting fastener and the supporting nut;

S04: 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;

S05: 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;

S06: Twist the support nut to make the support nut close to the outer wall of the precast concrete member;

S07: Tighten the bolts so that the heads of the bolts are in close contact with the support nuts.

According to some embodiments of the present invention, before step S02, the outer connection fastener is inserted into the bolt, so that the outer connection fastener is tightly attached to the support nut.

The present invention has at least the following technical effects:

1. The connector of the fully threaded prefabricated concrete member of the embodiment of the present invention, including the inner connecting fastener, the bolt and the supporting nut, can connect the precast concrete member from the inside, overcoming the inability to connect the precast concrete member from the inside due to insufficient space. Technical obstacles to the connection of concrete elements.

2. In the connector of the fully threaded precast concrete member of the embodiment of the present invention, the upper and lower ends of the clamping groove are provided with guide surfaces, which is convenient for the end plate of the precast concrete member above and the end plate of the precast concrete member below. into the card slot 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 a connector when an external connection fastener is added according to an embodiment of the present invention;

4 is a schematic diagram of an end plate of a precast concrete member according to an embodiment of the present invention;

FIG. 5 is a schematic diagram 1 of the use state of the connector when there is no external connection fastener according to an embodiment of the present invention;

6 is a schematic diagram 2 of the use state of the connector when there is no external connection fastener according to an embodiment of the present invention;

FIG. 7 is a schematic diagram 3 of the use state of the connector when there is no external connection fastener according to an embodiment of the present invention;

FIG. 8 is a schematic diagram 4 of the use state of the connector when there is no external connection fastener according to an embodiment of the present invention;

9 is a schematic diagram 1 of the use state of the connector when there is an external connection fastener according to an embodiment of the present invention;

10 is a schematic diagram 2 of the use state of the connector when there is an external connection fastener according to an embodiment of the present invention;

11 is a schematic diagram 3 of the use state of the connector when there is an external connection fastener according to an embodiment of the present invention;

12 is a schematic diagram 4 of the use state of the connector when there is an external connection fastener according to an embodiment of the present invention;

FIG. 13 is a schematic diagram 5 of the use state of the connector when there is an external connection fastener according to an embodiment of the present invention.

Reference numerals: inner connection fastener 100, threaded hole 110, snap groove 120, guide surface 121, bolt 200, support nut 300, outer connection fastener 400, second snap groove 410, second guide surface 411, 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 fully threaded precast concrete member, including an inner connection fastener 100, a bolt 200 and a support nut 300. 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 fasteners 100 are provided with threaded holes 110, the screws of the bolts 200 are fully threaded, and the tail of the bolts 200 transversely passes through the support nut 300 and the end from the outside to the inside. The plate is threadedly connected with the threaded hole 110 of the inner connecting fastener 100 . The connecting piece of the present invention 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.

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 , the upper and lower ends of the clamping groove 120 are provided with guide surfaces 121 . 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.

As shown in FIG. 3 , in order to increase the connection strength between the end plate of the precast concrete member above and the end plate of the precast concrete member below, in some embodiments, the outer side of the precast concrete member is provided with an outer connection buckle to strengthen the connection strength 400 pieces.

In some embodiments, the outer connecting fastener 400 is provided with a circular through hole through which the bolt 200 passes. The circular through hole facilitates the movement of the outer connecting fastener 400 along the bolt 200 .

In some embodiments, the outer connecting fastener 400 is provided with a second engaging groove 410 , and the upper and lower ends of the second engaging groove 410 are provided with second guiding surfaces 411 . The second guide surface 411 can be a plane or a regular arc surface; preferably, the second guide surface 411 is a plane. Since the end plate of the precast concrete member has been hooped by the inner connecting fastener 100, the second guide surface 411 is connected to the horizontal plane. The included angle can be smaller than α, and its value can be in the range of 5°-10°, specifically 5°, 8° or 10°.

As shown in FIG. 4 , the present invention also provides an end plate of a fully threaded precast concrete member, including an end plate body 500 , and a groove 510 is provided on the end plate body 500 . 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 Using the end plate with grooves 510 , the height of the grooves 510 should be half the height of the bolts 200 when the second method is used.

In addition, the groove 510 can also be replaced by a through hole that penetrates the end plate main body 500 laterally, as long as the bolt 200 can be smoothly passed through the end plate main body 500 to be connected with the inner connecting fastener 100; specifically, the through hole or groove The shape of 510 may be circular, square, or other shapes.

As shown in Figures 5-13, the present invention also provides a method for using a connector and an end plate of a fully threaded precast concrete member, including the following steps;

S01: Screw in the support nut 300 from the bottom of the bolt 200 and screw it to a position close to the head of the bolt;

S02: Screw the inner connecting fastener 100 into the tail position of the bolt 200, so that the distance between the inner connecting fastener 100 and the support nut 300 is greater than the outer diameter of the end plate of the precast concrete member;

S03: Place the connector of the above assembled fully threaded precast concrete member in the groove 510 of the lower end plate, so that the inner connection fastener 100 is located on the inner side of the precast concrete member and the upper precast concrete member falls The end plate does not interfere with the inner connecting fastener 100 and the supporting nut 300;

S04: 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;

S05: Pull the bolt 200 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;

S06: Twist the support nut 300 to make the support nut 300 close to the outer wall of the precast concrete member;

S07 : Tighten the bolt 200 so that the head of the bolt 200 is in close contact with the support nut 300 .

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 side wall of the concrete, before step S02, insert the outer connecting fastener 400 into the bolt 200 to make the outer connecting fastener 400 close to the support nut 300, and then perform the following steps;

S02': screw the inner connection fastener 100 into the rear position of the bolt 200, so that the distance between the inner connection fastener 100 and the outer connection fastener 400 is greater than the outer diameter of the end plate of the precast concrete member;

S03': place the connector of the above-mentioned assembled fully threaded precast concrete member in the groove 510 of the lower end plate, so that the inner connection fastener 100 is located on the inner side of the precast concrete member and the precast concrete member above is above when falling The end plate does not interfere with the inner connecting fastener 100 and the outer connecting fastener 400;

S04': drop the precast concrete member above, so that the end plate of the precast concrete member above is in close contact with the end plate of the precast concrete member below;

S05': pull the bolt 200 on the outside of the precast concrete member, so that the inner connecting fastener 100 is hooped on the end plate of the precast concrete member above and the end plate of the precast concrete member below;

S06': move the outer connection fastener 400 along the bolt, so that the outer connection fastener 400 also clamps the end plate of the precast concrete member above and the end plate of the precast concrete member below, and then screw the support nut 300 to make the support screw The cap 300 is close to the outer connecting fastener 400;

S07': Tighten the bolt 200 so that the head of the bolt 200 is in close contact with the support nut 300.

After connecting by the above method, the tail of the bolt 200 is located on the inside of the precast concrete member. Compared with the case where the tail of the bolt 200 is located on the outside of the precast concrete member, the resistance during pile pressing is reduced, and the pile pressing efficiency can be improved.

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. Full thread formula precast concrete member's connecting piece, its characterized in that: including in-connection fastener (100), bolt (200) and support nut (300), in-connection fastener (100) are located precast concrete member's inboard and are used for connecting adjacent precast concrete member's end plate, be provided with screw hole (110) on in-connection fastener (100), the screw rod of bolt (200) is full thread formula, the afterbody of bolt (200) is from the outside to inboard lateral pass in proper order support nut (300) and end plate and with screw hole (110) threaded connection of in-connection fastener (100).

2. The connector of a full thread type 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 for hooping the end plates of the adjacent precast concrete members.

3. The connector of a full thread type precast concrete member according to claim 2, wherein: the upper end and the lower end of the clamping groove (120) are provided with guide surfaces (121).

4. The connector of a full thread type precast concrete member according to claim 3, wherein: the guide surface (121) is a plane, the included angle between the guide surface (121) and the horizontal direction is alpha, and the alpha ranges from 20 degrees to 30 degrees.

5. The connector of a full thread type precast concrete member according to claim 1, wherein: and an external connecting fastener (400) for enhancing the connecting strength is arranged on the outer side of the precast concrete member.

6. The connector of a full thread type precast concrete member according to claim 5, wherein: the external connection fastener (400) is provided with a circular through hole through which the bolt (200) passes.

7. The connector of a full thread type precast concrete member according to claim 6, wherein: the external connection fastener (400) is provided with a second clamping groove (410), and the upper end and the lower end of the second clamping groove (410) are both provided with a second guide surface (411).

8. End plate of full screw thread formula precast concrete component, its characterized in that: comprises an end plate main body (500), wherein a groove (510) is arranged on the end plate main body (500), and the end plate main body (500) is used for being connected with a connecting piece of a full-thread type precast concrete unit according to any one of claims 1 to 7.

9. The method for using the connecting member and the end plate of the fully threaded precast concrete unit according to any one of claims 1 to 7, wherein: comprises the following steps;

s01: screwing the support nut (300) from the bottom of the bolt (200) and into position adjacent to the head of the bolt;

s02: screwing the inner connecting fastener (100) into the tail position of the bolt (200) to enable the distance between the inner connecting fastener (100) and the supporting nut (300) to be larger than the outer diameter of the end plate of the precast concrete component;

s03: placing the connecting piece of the assembled full-thread precast concrete unit in a groove (510) of a lower end plate, so that the inner connecting fastener (100) is positioned at the inner side of the precast concrete unit, and the upper end plate does not interfere with the inner connecting fastener (100) and the supporting nut (300) when the upper precast concrete unit falls;

s04: dropping the upper precast concrete member to enable the end plate of the upper precast concrete member to be tightly attached to the end plate of the lower precast concrete member;

s05: pulling the bolt (200) at the outer side of the precast concrete unit so that the inner connection fastener (100) grips the end plate of the upper precast concrete unit and the end plate of the lower precast concrete unit;

s06: screwing the supporting nut (300) to enable the supporting nut (300) to be tightly attached to the outer wall of the precast concrete component;

s07: tightening the bolt (200) to cause the head of the bolt (200) to abut the support nut (300).

10. The method for using the connecting member and the end plate of the fully threaded precast concrete unit according to claim 9, wherein: before the step of S02, the external connection fastener (400) is inserted into the bolt (200) so that the external connection fastener (400) is tightly attached to the support nut (300).

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