CN113062751A

CN113062751A - Conical buckle self-locking type shield segment connecting device

Info

Publication number: CN113062751A
Application number: CN202110457022.0A
Authority: CN
Inventors: 简小刚; 梁晓伟; 姚文山; 张毅; 柳献; 王伟
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2021-07-02
Anticipated expiration: 2041-04-27
Also published as: CN113062751B

Abstract

The invention relates to a conical buckle self-locking shield segment connecting device which is used for realizing the stable connection between adjacent segments and comprises a cylindrical nut piece with internal threads, a conical connecting piece and a self-locking sleeve piece, wherein the cylindrical nut piece is poured in a mounting hole of one side of a shield segment, the self-locking sleeve piece is poured in the mounting hole of the other side of the shield segment, the conical connecting piece consists of a conical head part and a connecting tail part which are integrally formed, the connecting tail part is matched with the internal threads of the nut piece through surface threads, and the conical head part is inserted into the self-locking sleeve piece and is clamped and fixed through a plurality of groups of telescopic buckle structures. Compared with the prior art, the invention has the advantages of simple structure, convenient installation, high connection reliability and the like.

Description

Conical buckle self-locking type shield segment connecting device

Technical Field

The invention relates to the technical field of shield segment splicing, in particular to a conical buckle self-locking type shield segment connecting device.

Background

In recent years, with the increasing severity of urban traffic congestion, more and more cities are gradually building new underground urban rail transit projects. The shield method is widely used due to its remarkable advantages: construction is carried out under the protection of a shield, so that the safety factor of construction is greatly improved; the vibration and noise caused by construction are less harmful to the environment. The assembling of the shield segments is a key step in construction, and the pursuit of perfect, efficient and reliable shield segment connection technology becomes an overall target for improving the construction progress according to the target of rapid construction of the shield tunnel.

In the construction of the existing shield tunnel, the arc-shaped bolt is usually used for connecting shield segments, but has the defects of easy deformation, large damage to the shield segments, inconvenience in installation and manufacture and the like. Many quick plug connectors have been developed and designed abroad, but in the whole application process of the quick plug connector, under the influence of external loads in earthquake disasters or other external loads, the connection of the connecting plug is easy to loosen, gaps can be formed between pipe rings, and the like.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a conical buckle self-locking type shield segment connecting device.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides a toper buckle is from locking-type shield constructs section of jurisdiction connecting device for realize the firm connection between the adjacent section of jurisdiction, the device has internal screw thread cylindric nut spare, toper connecting piece and pours the auto-lock cover barrel spare in the mounting hole of opposite side shield section of jurisdiction including pouring in the mounting hole of one side shield section of jurisdiction, the toper connecting piece constitute by integrated into one piece's toper head and connection afterbody, the connection afterbody cooperate through the internal thread on surperficial screw thread and nut spare, toper head insert in the auto-lock cover barrel spare and carry out the joint through multiunit retractable buckle structure and fix.

Preferably, auto-lock cover section of thick bamboo piece include toper holding tank and multilayer along circumference install the retractable buckle structure in the buckle mounting groove on the toper holding tank lateral wall, every retractable buckle structure comprises auto-lock buckle and reset spring.

Preferably, the conical head of the conical connecting piece is composed of a conical surface matched with the conical accommodating groove in shape and a plurality of layers of annular grooves formed in the surface of the conical surface, and each layer of annular groove is matched and clamped with each corresponding layer of telescopic buckling structure after being installed.

The device is when connecting, pour into a mould respectively in adjacent two adjacent shield segments of jurisdiction with nut spare and auto-lock cover sleeve spare in advance, the external screw thread that the toper connecting piece passes through the connection afterbody inserts the nut spare and connects, after the mounting hole centering, insert the toper head of toper connecting piece gradually in the toper holding tank of auto-lock cover sleeve spare, in the insertion process, the auto-lock buckle compresses reset spring to buckle mounting groove under the extrusion of conical surface in, realize resetting until all auto-lock buckles in the ring channel that corresponds, make two adjacent shield segments of jurisdiction realize the laminating and connect.

Preferably, the width of the annular groove is larger than the thickness of the self-locking buckle, and the depth of the annular groove is smaller than the position of the self-locking buckle when the self-locking buckle is reset.

Preferably, each layer of retractable snap structures is evenly distributed along the circumferential direction.

Preferably, when the conical head of the conical connecting piece is not inserted into the conical accommodating groove, the distance from the inner surface of the self-locking buckle of each layer of the retractable buckle structure to the axis is gradually reduced from outside to inside, so that the outer self-locking buckle is not clamped with the annular groove of the inner layer when the conical head of the conical connecting piece is inserted into the conical accommodating groove.

Preferably, the inner surface of the self-locking buckle of each layer of the retractable buckle structure is provided with an inclined surface, and the angle of the inclined surface is the same as that of the surface of the conical surface.

Preferably, the number of the telescopic buckling structures is 1-4, and 2-8 telescopic buckling structures are arranged on each layer along the circumferential direction.

Preferably, a plurality of annular bosses are arranged on the outer surfaces of the nut member and the self-locking sleeve member.

Compared with the prior art, the invention has the following advantages:

the device has the advantages of simple structure and convenience in installation: the locking of the self-locking device is mainly realized by clamping the self-locking buckle and the reset spring, the compression and the automatic reset at the annular groove on the self-locking device can be realized under the extrusion of the conical surface, the self-locking is realized, the locking is realized without an excessive structure, the self-locking device can be directly inserted after the mounting hole is centered, and the manual operation is not needed.

Secondly, the connection reliability is high: the telescopic buckle structure can uniformly arrange a plurality of groups at the circumference of the section of the conical surface, a plurality of layers are axially arranged on the conical connecting piece, the reliability of connection is ensured under the combined action of the plurality of layers and the groups, and permanent locking can be realized after one-time installation.

Drawings

Fig. 1 is a schematic diagram of the connection principle of the present invention.

Fig. 2 is a schematic structural view of the nut member.

Fig. 3 is a schematic view of a conical connector structure.

Fig. 4a is a cross-sectional view of a self-locking sleeve member construction.

Fig. 4b is a front view of the self-locking sleeve member.

Fig. 4c is a schematic view of a self-locking sleeve member.

Fig. 5 is a schematic view of the positions of the nut member, the conical connecting member and the self-locking sleeve member before the installation of the present invention.

FIG. 6 is a schematic view of the centering of the mounting holes after the tapered connecting member is engaged with the nut member when the present invention is installed.

Fig. 7 is a schematic sectional view of a telescopic fastening structure compressed when the tapered connecting piece is inserted into the tapered receiving groove during installation of the present invention.

Fig. 8a is a schematic structural view of the present invention when the installation is completed.

Fig. 8b is a schematic sectional view showing the structural positions of the components of the present invention when the installation is completed.

The notation in the figure is:

1. nut spare, 2, toper connecting piece, 201, ring channel, 202, conical surface, 203, connection tail, 3, auto-lock sleeve part, 301, auto-lock buckle, 302, reset spring, 303, toper holding tank, 4, mounting hole, 5, shield constructs the section of jurisdiction.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

Examples

As shown in fig. 1-4, the invention provides a conical buckle self-locking shield segment connecting device, comprising a nut member 1, a conical connecting member 2 and a self-locking sleeve member 3, wherein the conical connecting member 2 is composed of a conical surface 202, an annular groove 201 and a connecting tail portion 203, the conical surface 202 is provided with two circles of the annular groove 201, the connecting tail portion 203 is provided with a bolt head for matching with the internal thread of the nut member 1, the self-locking sleeve member 3 is composed of a conical accommodating groove 303, a self-locking buckle 301 and a return spring 302, the self-locking buckle 301 and the return spring 302 of the self-locking sleeve member 3 form a double-layer four-group telescopic buckle structure fixed in the mounting groove on the side wall of the conical accommodating groove 303, when in connection, the nut member 1 and the self-locking sleeve member 3 are respectively poured in advance into two adjacent shield segments 5, the conical connecting member 2 is connected with the nut member 1 through threads, the conical, the retractable buckle structure is compressed under the extrusion of the conical surface 202, and is continuously inserted until all the self-locking buckles 301 reset in the corresponding annular grooves 201, so that the two shield segments 5 are attached to realize connection.

In this embodiment, the concrete installation process of connecting and installing the adjacent shield segments 5 by using the tapered buckle self-locking shield segment connecting device is as follows:

1. the nut piece 1 and the self-locking sleeve piece 3 are respectively poured into the mounting holes 4 of two adjacent shield segments 5 in advance, as shown in fig. 5;

2. the connection tail portion 203 of the tapered connection member 2 is screwed to the nut member 1 as shown in fig. 6;

3. after the mounting holes 4 are centered, the hydraulic cylinder is adopted to push the shield segment 5 to be mounted, so that the conical connecting piece 2 is inserted into the self-locking sleeve piece 3 and is continuously pushed, the telescopic buckle structure is compressed under the extrusion of the conical surface 202, as shown in fig. 7, the telescopic buckle structure is continuously inserted until all the self-locking buckles 301 are reset and clamped in the annular groove 201, and the mounting is completed, as shown in fig. 8a and 8 b.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a toper buckle is from locking-type shield constructs section of jurisdiction connecting device for realize the firm connection between the adjacent section of jurisdiction, a serial communication port, the device has internal screw thread cylindric nut spare (1), toper connecting piece (2) and pours auto-lock cover barrel spare (3) in the mounting hole of opposite side shield section of jurisdiction including pouring in the mounting hole of one side shield section of jurisdiction, toper connecting piece (2) constitute by integrated into one piece's toper head and connection afterbody (203), connection afterbody (203) match through the internal thread on surperficial screw thread and nut spare (1), toper head insert in auto-lock cover barrel spare (3) and carry out the joint through multiunit retractable buckle structure and fix.

2. The tapered buckle self-locking shield segment connection device according to claim 1, wherein the self-locking sleeve member (3) comprises a tapered receiving groove (303) and a plurality of layers of retractable buckle structures circumferentially mounted in the buckle mounting grooves on the side wall of the tapered receiving groove (303), and each retractable buckle structure comprises a self-locking buckle (301) and a return spring (302).

3. The tapered buckle self-locking shield segment connecting device according to claim 2, wherein the tapered head of the tapered connecting member (2) is composed of a tapered surface (202) with a shape matched with the tapered accommodating groove (303) and a plurality of layers of annular grooves (201) formed on the surface of the tapered surface (202), and each layer of annular groove (201) is matched and clamped with each corresponding layer of telescopic buckle structure after being installed.

4. The self-locking shield segment connecting device with the conical buckles as claimed in claim 3, wherein when the device is connected, the nut member (1) and the self-locking sleeve member (3) are respectively pre-poured into two adjacent shield segments (5), the conical connecting member (2) is inserted into the nut member (1) through the external thread of the connecting tail portion (203) for connection, after the mounting hole (4) is centered, the conical head portion of the conical connecting member (2) is gradually inserted into the conical accommodating groove (303) of the self-locking sleeve member (3), and in the inserting process, the self-locking buckles (301) compress the return springs (302) to the buckle mounting grooves under the extrusion of the conical surfaces (202) until all the self-locking buckles (301) are reset in the corresponding annular grooves (201), so that the two adjacent shield segments (5) are attached and connected.

5. The self-locking shield segment connecting device with the conical buckle as claimed in claim 3, wherein the width of the annular groove (201) is larger than the thickness of the self-locking buckle (301), and the depth of the annular groove is smaller than the position of the self-locking buckle (301) when the self-locking buckle is reset.

6. The tapered buckle self-locking type shield segment connecting device according to claim 3, wherein each layer of retractable buckle structures are uniformly distributed along the circumferential direction.

7. The self-locking type shield segment connecting device of the conical buckle as claimed in claim 3, wherein when the conical head of the conical connecting member (2) is not inserted into the conical receiving groove (303), the distance from the inner surface of the self-locking buckle (301) to the axis of each layer of the retractable buckle structure is gradually reduced from outside to inside, so that the self-locking buckle (301) on the outer layer is not clamped with the annular groove (201) on the inner layer during the process that the conical head of the conical connecting member (2) is inserted into the conical receiving groove (303).

8. The self-locking type shield segment connecting device of the conical buckle as claimed in claim 3, wherein the inner surface of the self-locking buckle (301) of each layer of the retractable buckle structure is provided with an inclined surface, and the angle of the inclined surface is the same as the angle of the surface of the conical surface (202).

9. The conical buckle self-locking type shield segment connecting device according to claim 3, wherein 1-4 layers of telescopic buckle structures are provided, and 2-8 telescopic buckle structures are provided on each layer along the circumferential direction.

10. The tapered buckle self-locking shield segment connecting device according to claim 1, wherein a plurality of annular bosses are arranged on the outer surfaces of the nut member (1) and the self-locking sleeve member (3).