CN114753863A

CN114753863A - Quick connecting device for shield tunnel segment

Info

Publication number: CN114753863A
Application number: CN202210494110.2A
Authority: CN
Inventors: 金浩; 王智弘
Original assignee: Southeast University
Current assignee: Southeast University
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-07-15

Abstract

The invention relates to a quick connecting device for shield tunnel segments, which comprises a first arc-shaped segment and a second arc-shaped segment, wherein a first joint is arranged in the first arc-shaped segment, and a second joint is arranged in the second arc-shaped segment. The first connector includes a latch assembly including a latch. The second connects and has the hook hole, and the hook lock can stretch into the hook hole that the second connects and hook the second and connect and accomplish being connected of first joint and second joint to realize the concatenation of first arc section of jurisdiction and second arc section of jurisdiction. The first joint further comprises a base, a driving block and a fixing seat. The fixing seat is fixed on the first arc-shaped duct piece. The fixed seat is provided with a bearing plane and an arc-shaped groove arranged on the bearing plane. The whole that coupler lock subassembly, base and drive block are constituteed is located the bearing plane and can lateral shifting and then spacing by the arc wall to make the coupler lock hook the second and connect. The first arc-shaped duct piece and the second arc-shaped duct piece are connected quickly and conveniently, and the requirement on the radian precision of the arc-shaped duct pieces is lowered.

Description

Quick connecting device for shield tunnel segment

Technical Field

The invention belongs to the technical field of subway shield tunnels, and particularly relates to a quick connecting device for shield tunnel segments.

Background

In the tunnel constructed by the shield method, one annular duct piece lining is formed by splicing a plurality of arc-shaped duct pieces. The circular pipe piece lining and the circular pipe piece lining are assembled in a through seam or staggered seam mode.

The prior connection of the arc-shaped duct piece and the arc-shaped duct piece is usually implemented by a camphor-groove type joint, but the camphor-groove type joint has very low bending rigidity and cannot resist the action of bending moment caused by external load, and the self stress balance must be achieved by depending on the resistance of surrounding rocks. Therefore, when bending moment caused by uneven settlement in the radial direction occurs, the camphor-groove type joint can quickly have large opening amount, and the integrity and the waterproofness of the pipe sheet are not good.

The existing arc-shaped duct piece and the arc-shaped duct piece are connected in a bolt connection mode, for example, a bent bolt joint is adopted for connection. The bent bolt joint is higher in cost than a straight bolt, and the joint is easy to deform. And when the bent bolt and the duct piece steel die are manufactured, if the bent bolt and the duct piece steel die cannot be processed according to the precision of the designed radian strictly, the bent bolt is difficult to perforate during construction, and especially when the staggered joint is assembled, a large amount of time and manpower are consumed for perforating the bent bolt. The radian precision requirement of the arc-shaped pipe sheet is high by adopting the bent bolt joint, and the assembly is difficult.

Disclosure of Invention

The invention aims to provide a quick connecting device for shield tunnel segments, which has low requirement on the radian precision of arc-shaped segments and is convenient to assemble.

In order to achieve the purpose, the invention adopts the following technical scheme:

a quick connecting device for shield tunnel segments comprises a first arc-shaped segment and a second arc-shaped segment, wherein a first joint is installed in the first arc-shaped segment, and a second joint is installed on the second arc-shaped segment; the first connector comprises a hook and lock assembly comprising a hook and lock; the second connects and has the hook hole, the hook lock can stretch into the second connects the hook hole just hooks the second connects the completion the first joint with the connection that the second connects, in order to realize first arc section of jurisdiction with the concatenation of second arc section of jurisdiction.

Preferably, in the above quick connecting device for shield tunnel segments, the first joint further comprises a base, a driving block and a fixing seat; the fixed seat is fixed on the first arc-shaped duct piece; the fixed seat is provided with a bearing plane and an arc-shaped groove formed in the bearing plane; the hook lock assembly, the base and the whole composed of the driving block are located on the bearing plane and can move transversely relative to the fixed seat so as to be limited by the arc-shaped groove, and therefore the hook lock hooks the second connector.

Preferably, in the above quick connecting device for a shield tunnel segment, the quick connecting device for a shield tunnel segment further comprises a poking member, the driving block has a poking hole, the first arc-shaped segment has a through hole, and the poking member extends into the poking hole through the through hole so as to transversely poke the driving block.

Preferably, in the above quick connecting device for shield tunnel segments, the poking part is a hexagonal hook piece.

Preferably, in the above quick connection device for shield tunnel segments, the hook lock assembly is longitudinally movably mounted to the base.

Preferably, in the above quick connecting device for shield tunnel segments, the hook lock assembly includes at least two hook locks, and two adjacent hook locks are spaced apart by a spacer.

Preferably, in foretell shield tunnel is quick connecting device for section of jurisdiction, the hook lock subassembly includes the movable block, the hook lock with the movable block is connected, the base has the holding tank, the hook lock with the movable block is located the holding tank just can longitudinal movement.

Preferably, in the above quick connecting device for shield tunnel segments, the first joint further includes an adjusting bolt located between the movable block and the base, the bottom surface of the movable block has a groove, the adjusting bolt is in threaded connection with the groove, and the movable block can be driven to move longitudinally relative to the base by rotating the adjusting bolt.

Preferably, in the above quick connecting device for shield tunnel segments, the inner end of the adjusting bolt is an octagonal operating end.

Preferably, in the quick connecting device for shield tunnel segments, the fixing seat and the first arc-shaped segment are cast and molded simultaneously.

The quick connecting device for the shield tunnel segment has the advantages that: a first connector is mounted in the first arc-shaped pipe sheet, and a second connector is mounted on the second arc-shaped pipe sheet. The hook lock of first joint can stretch into the hook hole of second joint and hook the second and connect and accomplish being connected of first joint and second joint to realize the concatenation of first arc section of jurisdiction and second arc section of jurisdiction. The first arc-shaped duct piece and the second arc-shaped duct piece are connected quickly and conveniently, the requirement on the radian precision of the arc-shaped duct pieces is reduced, and the cost is reduced.

Drawings

FIG. 1 is a schematic view of the overall assembly of a quick connection device for shield tunnel segments according to an embodiment of the present invention;

FIG. 2 is a schematic view of the assembly of a first fitting and a second fitting of an embodiment of the invention;

FIG. 3 is an assembled view of a first arcuate segment, a first joint, and a second joint in accordance with an embodiment of the present invention;

FIG. 4 is a block diagram of the hook latch assembly of the first connector of the present invention in a longitudinally unmoved state;

fig. 5 is a structural view showing a state in which a hooking lock member of a first coupling according to an embodiment of the present invention is moved longitudinally.

The component names and designations in the drawings are as follows:

a first arc-shaped pipe piece (10) and a through hole (11);

a second arcuate segment (20);

the device comprises a first connector (30), a hook lock component (31), a hook lock (311), a spacer block (312), a movable block (313), a connecting bolt (314), a base (32), a driving block (33), a toggle hole (331), a fixed seat (34), an arc-shaped groove (341), a bearing plane (342), an adjusting bolt (35), an octagonal operation end (351) and an arc-shaped block (36);

a second joint (40) and a hook hole (41).

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

As shown in fig. 1, the quick coupling device for shield tunnel segments of the present embodiment includes a first segment 10 and a second segment 20. A first connector 30 is mounted in the first segment 10 and a second connector 40 is mounted in the second segment 20. The connection of the first joint 30 and the second joint 40 effects splicing of the first segment 10 and the second segment 20.

As shown in fig. 2, the first joint 30 includes a latch assembly 31, a base 32, a driving block 33, and a fixing seat 34. The hooking lock member 31 includes a hooking lock 311, and the second connector 40 has a hooking hole 41. The hook hole 41 of the present embodiment may be a rectangular hole. The hook lock 311 extends into the hook hole 41 of the second connector 40 and hooks the second connector 40 to connect the first connector 30 and the second connector 40, that is, to splice the first segment 10 and the second segment 20.

Specifically, the first connector 30 of this embodiment is located in the inner cavity of the first segment 10, and the first segment 10 has an opening on its face facing the second segment 20, and a removable cover plate is mounted on the opening. The cover plate is provided with an outlet for the hook lock 311 to extend out of the first segment 10.

This embodiment is accomplished by installing a first fitting 30 in a first segment 10 and a second fitting 40 on a second segment 20. The hook lock 311 of the first connector 30 can extend into the hook hole 41 of the second connector 40 and hook the second connector 40 to complete the connection between the first connector 30 and the second connector 40, so as to splice the first segment 10 and the second segment 20. The first arc-shaped duct piece 10 and the second arc-shaped duct piece 20 are connected quickly and conveniently, the requirement on the radian precision of the arc-shaped duct pieces is reduced, and the cost is reduced.

The fixing base 34 of this embodiment is fixed in the first segment 10. Specifically, the fixing seat 34 and the first arc-shaped duct piece 10 are cast at the same time, so that the fixing seat 34 of the embodiment has good stability.

As shown in fig. 2 and 3, the latch assembly 31, the base 32, and the driving block 33 of the present embodiment are formed as a unit that is laterally movable with respect to the fixing base 34. Specifically, the supporting plane 342 of the fixing base 34 is provided with an arc-shaped slot 341. The driving block 33 is connected to the base 32, and the driving block 33 is provided with a toggle hole 331. The toggle hole 331 may be a through hole or a blind hole. The toggle holes 331 may have a hexagonal structure. Correspondingly, the first arc-shaped duct piece 10 is provided with a through hole 11, and the through hole 11 is communicated with the inner cavity of the first arc-shaped duct piece 10 and further communicated with the poking hole 331 of the driving block 33.

Before the integral structure formed by the hook lock assembly 31, the base 32 and the driving block 33 is shifted transversely, the hook lock assembly 31, the base 32 and the driving block 33 are positioned on the bearing plane 342 of the fixed seat 34.

The hexagonal hook piece penetrates through the through hole 11 and extends into the toggle hole 331 to transversely toggle the integral structure formed by the hook lock component 31, the base 32 and the driving block 33, so that the integral structure formed by the hook lock component 31, the base 32 and the driving block 33 transversely moves towards the arc-shaped groove 341 to be limited by the arc-shaped groove 341 of the fixed seat 34. In this process, the hook lock 311 hooks the second joint 40, so that the first joint 30 and the second joint 40 are connected, and the connection stability is good. In this embodiment, besides the hexagonal hook piece, other toggle pieces may be used to toggle the driving block 33, so as to realize the lateral movement of the integral structure formed by the hook lock assembly 31, the base 32 and the driving block 33.

After the integral structure formed by the hook lock component 31, the base 32 and the driving block 33 is limited by the arc-shaped groove 341 of the fixing seat 34, the hexagonal hook piece can be taken out from the through hole 11. The through hole 11 of the present embodiment has a lateral size larger than that of the toggle hole 331 of the driving block 33. The through hole 11 of the present embodiment may be a square hole.

The longitudinal position of the hook lock assembly 31 can be adjusted to meet the requirements of stress in the pipe piece at different positions. The specific process is as follows: the base 32 has a receiving groove extending in the longitudinal direction. The hook assembly 31 of the present embodiment includes two hook latches 311 and a spacer 312 between the two hook latches 311 and a movable block 313 below the two hook latches 311. The two hook locks 311, the spacer block 312 and the movable block 313 are connected into a whole by the connecting bolt 314 and are located in the receiving groove of the base 32. Because the movable block 313 can move longitudinally relative to the groove bottom of the accommodating groove, the hook lock 311 can be driven to move longitudinally. The number of the connecting bolts 314 of the present embodiment may be one or two, and the specific number may be selected according to actual needs.

As shown in fig. 4 and 5, specifically, the first joint 30 of the present embodiment further includes an adjusting bolt 35 extending longitudinally. The bottom surface of the movable block 313 is provided with a groove, and the surface of the groove is provided with threads. The adjusting bolt 35 is located below the movable block 313 and is screw-engaged with the movable block 313. The inner end of adjusting bolt 35 has eight angle operating ends 351, and the manual work rotates eight angle operating ends 351 and then rotates adjusting bolt 35 through the operating part to drive movable block 313 for base 32 longitudinal movement, the realization is to the regulation of the vertical position of hook lock 311. The longitudinal position of the hook lock assembly 31 of the present embodiment is conveniently adjusted.

Specifically, the arc-shaped block 36 is welded to the bottom surface of the base 32, so that the base 32 and the arc-shaped block 36 form a whole. The adjusting bolt 35 is located between the movable block 313 and the integral structure, and the adjusting bolt 35 is respectively in threaded fit with the movable block 313 and the integral structure. Specifically, the bottom of the adjusting bolt 35 is threadedly engaged with the base 32 and the top surface of the arc block 36. The latch assembly 31, the base 32 and the driving block 33 of this embodiment form an integral structure which is limited by the arc-shaped slot 341 of the fixing seat 34 through the arc-shaped block 36.

Specifically, before the hook lock assembly 31, the base 32 and the driving block 33 are laterally shifted to form an integral structure, the hook lock assembly 31, the base 32 and the driving block 33 are supported on the supporting plane 342 of the fixing base 34 through the arc-shaped block 36.

This embodiment requires that the longitudinal position of the hook lock 311 be adjusted and fixed as required in the field before connecting the first segment 10 to the second segment 20. When the first segment 10 and the second segment 20 are connected, the hook lock 311 only needs to be hooked on the second connector 40, and the connection is simple, quick and convenient.

In other embodiments, the hook lock assembly 31 may further include one hook lock 311 or three hook locks 311, etc. When the number of the hook locks 311 is greater than two, the adjacent hook locks 311 are separated by the spacer, and all the hook locks 311 and the spacer are connected into a whole by the connecting members such as bolts, so as to improve the uniformity of stress.

As shown in fig. 4, the receiving groove of the base 32 is divided into two parts, and the lateral width of the upper part of the receiving groove is smaller than the lateral width of the lower part of the receiving groove. Two hook locks 311 and a spacer 312 are located at the upper portion of the receiving groove. The partial movable block 313 is located at an upper portion of the receiving groove, and the partial movable block 313 is located at a lower portion of the receiving groove. The side walls of the upper and lower receiving grooves guide the longitudinal movement of the movable block 313 to ensure the accuracy and stability of the longitudinal movement of the movable block 313.

For convenience of description, the transverse direction defined in this embodiment is shown as the X direction in fig. 2, and the longitudinal direction is shown as the Y direction in fig. 2.

As shown in fig. 2, the hook latch 311 of the present embodiment includes a hook portion and a mounting portion. The hook portion is configured to extend into the hook hole 41 to hook the second connector 40. The mounting portion is provided with a mounting hole, and the hook lock 311, the spacer 312, and the movable block 313 are connected together by a connecting bolt 314. The spacer 312 of this embodiment may be a rectangular plate structure.

The coupler lock 311 of the embodiment can be poured by a mold, Q195 high-quality carbon structural steel is adopted, the non-metallic impurity content of the components is low, the components are fused into iron elements to produce a strengthening effect, the yield strength, the tensile strength, the overall rigidity and the wear resistance of the coupler lock 311 are improved, and meanwhile, the manganese element can reduce the harm of the sulfur element to a steel body and avoid the hot brittleness of the steel body.

The spacing blocks 312 and the movable blocks 313 are poured by alloy carburizing steel, and the carbon content is 0.1-0.2%. The carbon content and the alloying element content of the spacer 312 can be relatively low, so as to control the cost. For the movable block 313, the bottom of the movable block needs to be provided with an internal thread, so that the plasticity and toughness of the movable block need to be improved, and the bending fatigue strength needs to be reduced, so that the carbon content needs to be relatively increased. Alloying elements such as chromium, manganese, titanium are added to improve the hardenability of the movable block 313, to refine the grains, to improve the wear resistance, and to ensure sufficient strength.

The adjusting bolt 35 and the connecting bolt 314 of the present embodiment are made of 20 boron steel. During construction, pre-pressure is applied to the connecting bolt 314, and a special wrench is used for tightening the nut to enable the hook lock 311 to generate extrusion force, so that the friction force of the connecting bolt 314 in the direction perpendicular to the screw body is increased, and the structure of the hook lock 311 is guaranteed not to be damaged.

The base 32 and the fixing seat 34 are made of alloy quenched and tempered steel, the carbon content is 0.25% -0.5%, and the base has good plasticity and toughness while the structural strength is guaranteed.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A quick connecting device for shield tunnel segments is characterized by comprising a first arc-shaped segment (10) and a second arc-shaped segment (20), wherein a first joint (30) is installed in the first arc-shaped segment (10), and a second joint (40) is installed on the second arc-shaped segment (20); the first joint (30) comprises a hook and lock assembly (31), the hook and lock assembly (31) comprises a hook and lock (311); the second joint (40) is provided with a hook hole (41), and the hook lock (311) can extend into the hook hole (41) of the second joint (40) and hook the second joint (40) to complete the connection of the first joint (30) and the second joint (40) so as to realize the splicing of the first arc-shaped pipe piece (10) and the second arc-shaped pipe piece (20).

2. The quick connection device for shield tunnel segments of claim 1, wherein: the first joint (30) further comprises a base (32), a driving block (33) and a fixed seat (34); the fixed seat (34) is fixed on the first arc-shaped pipe piece (10); the fixed seat (34) is provided with a bearing plane (342) and an arc-shaped groove (341) formed in the bearing plane (342); the hook lock assembly (31), the base (32) and the driving block (33) are integrally positioned on the bearing plane (342) and can move transversely relative to the fixed seat (34) to be limited by the arc-shaped groove (341), so that the hook lock (311) hooks the second joint (40).

3. The quick connection device for shield tunnel segments of claim 2, wherein: the quick connecting device for the shield tunnel segment further comprises a poking piece, the driving block (33) is provided with a poking hole (331), the first arc-shaped segment (10) is provided with a through hole (11), and the poking piece extends into the poking hole (331) through the through hole (11) so as to transversely poke the driving block (33).

4. The quick connection device for shield tunnel segments as claimed in claim 3, wherein: the poking piece is a hexagonal hook piece.

5. The quick connecting device for shield tunnel segments of claim 2, wherein: the hook lock assembly (31) is longitudinally movably mounted to the base (32).

6. The quick connection device for shield tunnel segments of claim 5, wherein: the hook lock assembly (31) comprises at least two hook locks (311), and every two adjacent hook locks (311) are spaced by a spacer block (312).

7. The quick connection device for shield tunnel segments of claim 5, wherein: the hook lock component (31) comprises a movable block (313), the hook lock (311) is connected with the movable block (313), the base (32) is provided with an accommodating groove, and the hook lock (311) and the movable block (313) are located in the accommodating groove and can move longitudinally under the guiding effect of the accommodating groove.

8. The quick connection device for shield tunnel segments of claim 7, wherein: the first joint (30) further comprises an adjusting bolt (35) located between the movable block (313) and the base (32), a groove is formed in the bottom surface of the movable block (313), the adjusting bolt (35) is in threaded connection with the groove, and the movable block (313) can be driven to move longitudinally relative to the base (32) by rotating the adjusting bolt (35).

9. The quick connection device for shield tunnel segments of claim 8, wherein: the inner end of the adjusting bolt (35) is an octagonal operating end (351).

10. The quick connection device for shield tunnel segments of claim 2, wherein: the fixed seat (34) and the first arc-shaped duct piece (10) are cast and molded simultaneously.