CN112854201A

CN112854201A - Mechanical connecting fastener

Info

Publication number: CN112854201A
Application number: CN202110241252.3A
Authority: CN
Inventors: 王树峰; 崔凤歧; 崔凤林; 元绍辉; 张振国; 张天兴
Original assignee: TIANJIN JIANCHENG JIYE GROUP CO Ltd
Current assignee: TIANJIN JIANCHENG JIYE GROUP CO Ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2021-05-28

Abstract

The invention provides a mechanical connecting fastener, which comprises a sleeve, a clamping piece and a plug connector, wherein a sliding block in the clamping piece is inserted in a sliding hole formed in the side wall of the sleeve, and moves towards the inner periphery of the sleeve through an elastic piece, so that the clamping piece can keep a state of being clamped in a clamping groove of the plug connector, and the connection of the sleeve and the plug connector is realized. The mechanical connecting fastener can realize pile extension of the pile foundation through machinery, so that the existing welding pile extension mode is replaced, the installation efficiency of the pile foundation is improved, and the service life of the pile foundation is prolonged; and the slider that is used for the joint is for being independent of the components of a whole that can function independently structure of sleeve or bayonet joint, sets up the structure on sleeve or slider with the slider in prior art, has reduced the manufacturing degree of difficulty, saves manufacturing cost.

Description

Mechanical connecting fastener

Technical Field

The invention belongs to the technical field of mechanical connection of pile foundations, and particularly relates to a mechanical connecting fastener.

Background

In the prior art, the precast pile industry has become a product with various specifications, and the product comprises a tubular pile, a hollow square pile, a solid square pile, a special-shaped pile, a interlocking pile, a U-shaped pile, a sheet pile and the like. The method is widely applied to railway systems and is expanded to various fields of industrial and civil buildings, municipal administration, metallurgy, ports, roads and the like. The vertical bearing capacity of the pile foundation is not a main investigation index, and the requirements on the vertical tensile load of the pile on the engineering site are more and more strict. Under the current technical conditions, the end plates are generally welded in engineering, and the welding mode cannot ensure the welding quality, the requirement on welding seams is high, and the rust prevention condition of welded junctions cannot be ensured. On one hand, the time for welding and pile splicing is long, and the welding seam needs to be cooled for a certain time after welding is finished. On the other hand, in the production process of the uplift pile, the anchoring ribs are added at the pile splicing part, so that the cost is increased.

Disclosure of Invention

In view of the above, the present invention is directed to overcome the above-mentioned defects in the prior art, and to provide a mechanical connecting fastener, which can improve the installation efficiency of a pile foundation and prolong the service life of the pile foundation on the premise of ensuring the tensile strength.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a mechanical fastener, comprising:

the side wall of the sleeve is provided with a plurality of sliding holes along the circumferential direction of the sleeve, the side wall of the sleeve left between the adjacent sliding holes is used as a connecting section to support the sleeve structure, and the outer diameter of a circumscribed circle of the connecting section is smaller than the integral outer diameter of the sleeve;

the clamping piece is sleeved on the periphery of the connecting section and comprises a sliding block and an elastic piece for connecting the sliding block, the sliding block is inserted in the sliding hole, and the inner end of the sliding block extends into the inserting hole in a natural state;

the plug connector is inserted in the jack, an annular clamping groove is formed in the outer wall of the plug connector along the circumferential direction of the plug connector, and the inner end of the sliding block is clamped in the clamping groove.

Further, the elastic piece is connected with the outer end side wall of the sliding block.

Further, the elastic member includes, but is not limited to, one or more of a spring, a belt or a polymer elastic band.

Furthermore, at least one of the outer edge of the bottom end of the plug connector or the top of the inner end of the sliding block is an inclined surface.

Further, the sliding hole is a fan-shaped hole or a rectangular straight hole;

the thickness of slider and the high phase-match of slide opening, the thickness of slider and the width phase-match of draw-in groove.

Furthermore, external threads are arranged on the circumferential side wall of the sleeve;

the end part of the plug connector is provided with an assembling shaft, and the circumferential side wall of the assembling shaft is provided with external threads.

The end plate is provided with a mounting hole for accommodating a sleeve or a plug, and an internal thread is arranged in the mounting hole.

Compared with the prior art, the invention has the beneficial effects that:

(1) this mechanical connection fastener just enough realizes the pile extension of pile foundation through machinery to replace current welding pile extension mode, improve the installation effectiveness of pile foundation, extension pile foundation life.

(2) This mechanical connection fastener for the slider of joint is for the components of a whole that can function independently sleeve or bayonet joint's components of a whole that can function independently structure, sets up the slider structure on sleeve or slider in prior art, has reduced the manufacturing degree of difficulty, saves manufacturing cost.

(3) This mechanical connection fastener, the independent design of slider has reduced the volume loss that is used for setting up location structure on the slider and on sleeve or the plug, guarantees the effective joint size and the joint intensity of slider, reduces the overall structure size of fastener.

(4) This mechanical connection fastener does not hide the structure, avoids appearing the quality hidden danger in the use, and because the components of a whole that can function independently structure of sleeve and fastener, replaces each subassembly easily, guarantees to connect the life of fastener.

(5) This mechanical connection fastener can make up the use to sleeve, bayonet joint and fastener as required, and the flexibility is stronger, has made things convenient for debugging and installation in the debugging process.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic cross-sectional view of a sleeve of a mechanical fastening device according to the present invention;

FIG. 2 is a schematic view of the cross-sectional structure taken along the line A-A of FIG. 1;

FIG. 3 is a schematic view of a plug of a mechanical fastener according to the present invention;

FIG. 4 is a schematic view of a mechanical fastener slider and spring connection according to the present invention;

FIG. 5 is a schematic view of the mechanical fastener sleeve and slider relationship according to the present invention;

FIG. 6 is a schematic view of the cross-sectional structure along the line B-B in FIG. 5;

FIG. 7 is a schematic view of a mechanical fastener plug and socket connection according to the present invention;

FIG. 8 is a schematic view of a connection structure of a plug of a mechanical fastener and a first end plate according to the present invention;

FIG. 9 is a schematic view of a mechanical fastener sleeve and second end plate connection according to the present invention;

FIG. 10 is a schematic view of a mechanical fastener plug and socket connection according to the present invention;

fig. 11 is a schematic view of a connection structure of a plug and a sleeve of a mechanical connection fastener according to the present invention.

Description of reference numerals:

1-a plug-in connector; 11-a card slot; 12-assembling a shaft; 3-a spring; 4-a slide block; 5-a sleeve; 51-a jack; 52-a slide hole; 53-connecting segment; 8-a first end plate; 81-a first mounting hole; 9-a second end plate; 91-second mounting hole.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail below with reference to the following examples with reference to the attached drawings:

as shown in fig. 1 to 11, the present embodiment provides a mechanical connecting fastener, including a sleeve 5, a fastener and a plug 1, wherein 2 to 4 sliding holes 52 are formed on a side wall of the sleeve 5 along a circumferential direction thereof, a side wall of the sleeve 5 left between adjacent sliding holes 52 is used as a connecting section 53 to support a structure of the sleeve 5, and an outer diameter of a circumscribed circle of the connecting section 53 is smaller than an overall outer diameter of the sleeve 5; the clamping piece comprises a sliding block 4 and an elastic piece, the sliding block 4 is connected in series through the elastic piece to form a ring shape and sleeved on the periphery of the connecting section 53, the sliding block 4 is inserted into the sliding hole 52, the inner end of the sliding block 4 extends into the insertion hole 51 in a natural state, the elastic piece is wound on the periphery of the connecting section 53, the maximum outer diameter of the ring shape surrounded by the elastic piece is smaller than the outer diameter of the sleeve 5, and the interference on the installation of the sleeve 5 is avoided; the plug 1 is inserted into the jack 51, the outer wall of the plug 1 is circumferentially provided with an annular rectangular clamping groove 11, and the inner end of the sliding block 4 is clamped in the clamping groove 11.

The mechanical connection fastener that this embodiment provided realizes that sleeve 5 and bayonet joint 1's connection is fixed through the joint of slider 4 and draw-in groove 11, compares in current welded pile connection mode, can avoid the pile connection intensity hidden danger that welding quality caused, and the emergence of the no welding seam corrosion condition to save weld time, guarantee pile connection intensity, improve the installation effectiveness of pile foundation, extension pile foundation life.

Meanwhile, the sliding block 4 for clamping is a split structure independent of the sleeve 5 or the plug connector 1, compared with the structure that the sliding block 4 is arranged on the sleeve 5 or the sliding block 4 in the prior art, the manufacturing difficulty is reduced, the volume loss of the sliding block 4 and the sleeve 5 or the plug connector is reduced, and the effective clamping size and the clamping strength of the sliding block 4 are ensured; and do not hide the structure, the quality condition of inspection subassembly that can be audio-visual avoids appearing the quality hidden danger in the use to can make up the use to sleeve 5, bayonet joint 1 and fastener as required, made things convenient for debugging and installation in the debugging process.

In the installation process, when the plug connector 1 is inserted into the jack 51, the sliding block 4 is pushed to move towards the periphery of the sleeve 5, the movement of the sliding block 4 causes the distance between the sliding blocks 4 to be enlarged, and the stretching state of the elastic piece is increased, so that when the sliding block 4 moves downwards to the position where the clamping groove 11 is opposite to the sliding block 4, the adjacent sliding blocks 4 are close to each other under the action of the contraction force of the elastic piece and simultaneously move towards the inner periphery of the sleeve 5 until the inner end of the sliding block is clamped in the clamping groove 11, and the state is kept under the action of the elastic piece;

in this embodiment, the connection manner of the slider 4 and the elastic member includes, but is not limited to, connection between a collar and a through hole, connection between a through hole and a suspension loop, i.e. punching a hole in the slider 4 or providing a suspension loop, providing collars at both ends of the elastic member, bypassing the collar from the through hole or the suspension loop, and threading connection, i.e. passing the elastic member through the through hole from both sides of the slider 4, or welding, etc.

In this embodiment, to ensure that the slider 4 has sufficient restoring force to maintain its tendency to move toward the inner periphery of the sleeve 5, an elastic member is attached to the outer end side wall of the slider 4 to increase the tensile strength of the elastic member.

The elastic member includes, but is not limited to, one or more of a spring 3, a belt or a polymer elastic band, and preferably, the elastic member is selected from the spring 3, and in order to prevent the spring 3 from deforming or damaging when the spring 3 abuts against the connecting section 53, in some embodiments, the spring 3 is provided as a metal wire or a metal sheet with certain flexibility at a portion where the spring 3 abuts against the connecting section 53.

In order to facilitate the plugging of the plug 1, at least one of the outer edge of the bottom end of the plug 1 or the top of the inner end of the slider 4 is an inclined surface, in this embodiment, the bottom end of the plug 1 is conical, the top of the inner end of the slider 4 is wedge-shaped, and when the plug 1 is inserted into the jack 51, the wedge-shaped surface of the slider 4 slides along the conical surface of the plug 1, so that the plugging difficulty is reduced.

The mechanical connection fastener that this embodiment provided, slide opening 52 are the straight hole of fan-shaped trompil or rectangle for slider 4 can be along sleeve 5 radial movement in slide opening 52, and the thickness of slider 4 and the height phase-match of slide opening 52, and the thickness of slider 4 and the width phase-match of draw-in groove 11, in order to guarantee the pile foundation steadiness behind the pile extension.

In the mechanical connecting fastener provided by the embodiment, the circumferential side wall of the sleeve 5 is provided with external threads; and the end of the plug 1 is provided with an assembling shaft 12, and the circumferential side wall of the assembling shaft 12 is provided with external threads.

The mechanical connection fastener that this embodiment provided still includes the end plate, and this end plate includes the first end plate 8 of being connected with assembly shaft 12 and the second end plate 9 of being connected with sleeve 5, and wherein, be equipped with first mounting hole 81 on the first end plate 8, be equipped with second mounting hole 91 on the second end plate 9, all be equipped with the internal thread in first mounting hole 81 and the second mounting hole 91, be used for screw in assembly shaft 12 and sleeve 5 respectively.

Pile foundation assembling process: at first locate the fastener cover in the linkage segment 53 periphery of sleeve 5, in slider 4 inserted each slide opening 52 respectively, then in with sleeve 5 screw in second mounting hole 91, in again with bayonet joint 1 screw in first mounting hole 81, in inserting bayonet joint 1 in sleeve 5 jack 51, accomplish the butt joint when slider 4 joint is in draw-in groove 11.

In other embodiments, the sleeve 5, the plug 1 and the clip can be used to assemble a pile without end plates.

Note: the fixing manner described herein is, if not specifically stated, a conventional fixing manner such as a screw connection, a welding, an adhesion, etc. may be used.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A mechanical fastener, comprising:

the sleeve comprises a sleeve (5), wherein a plurality of sliding holes (52) are formed in the side wall of the sleeve (5) along the circumferential direction of the sleeve, the side wall of the sleeve (5) reserved between the adjacent sliding holes (52) is used as a connecting section (53) to support the structure of the sleeve (5), and the outer diameter of a circumscribed circle of the connecting section (53) is smaller than the whole outer diameter of the sleeve (5);

the clamping piece is sleeved on the periphery of the connecting section (53) and comprises a sliding block (4) and an elastic piece for connecting the sliding block (4), the sliding block (4) is inserted into the sliding hole (52), and the inner end of the sliding block (4) extends into the insertion hole (51) in a natural state;

the plug connector (1) is plugged in the jack (51), an annular clamping groove (11) is formed in the outer wall of the plug connector (1) along the circumferential direction of the plug connector, and the inner end of the sliding block (4) is clamped in the clamping groove (11).

2. A mechanical fastener of claim 1, wherein: the elastic piece is connected with the outer end side wall of the sliding block (4).

3. A mechanical fastener of claim 1, wherein: the elastic part comprises but is not limited to one or more of a spring (3), a belt or a polymer elastic belt.

4. A mechanical fastener of claim 1, wherein: at least one of the outer edge of the bottom end of the plug connector (1) or the top of the inner end of the sliding block (4) is an inclined surface.

5. A mechanical fastener of claim 1, wherein: the sliding hole (52) is a fan-shaped open hole or a rectangular straight hole;

the thickness of the sliding block (4) is matched with the height of the sliding hole (52), and the thickness of the sliding block (4) is matched with the width of the clamping groove (11).

6. A mechanical fastener of claim 1, wherein: external threads are arranged on the circumferential side wall of the sleeve (5);

the end part of the plug connector (1) is provided with an assembling shaft (12), and the circumferential side wall of the assembling shaft (12) is provided with an external thread.

7. An end plate, characterized by: the end plate is provided with a mounting hole for accommodating the sleeve (5) or the plug connector (1), and an internal thread is arranged in the mounting hole.