CN213269903U

CN213269903U - Novel connecting structure of shield pieces

Info

Publication number: CN213269903U
Application number: CN202021288677.7U
Authority: CN
Inventors: 房浩
Original assignee: Electric Engineering Co Ltd of China Railway 19th Bureau Group Co Ltd
Current assignee: Electric Engineering Co Ltd of China Railway 19th Bureau Group Co Ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-05-25
Anticipated expiration: 2030-07-02

Abstract

The utility model relates to a shield constructs the piece, especially relates to a novel connection structure of shield piece. The structure comprises the duct pieces which are arranged in sequence, wherein any two adjacent duct pieces are connected through a plurality of connecting pieces, each connecting piece comprises a connecting block which is arranged outside the joint of the two adjacent duct pieces, the surface symmetry of the connecting block is provided with a pair of mounting holes perpendicular to the duct pieces, the pair of mounting holes are respectively positioned on two sides of the joint of the adjacent duct pieces, the duct pieces correspond to the mounting holes, threaded sleeves are pre-embedded, and the connecting blocks are connected with the threaded sleeves through bolts. This is disclosed through having set up the connecting block as the main adapting unit who connects two adjacent sections of jurisdiction, rethread bolt is fixed respectively between with connecting block and the section of jurisdiction to realize the interconnect between the section of jurisdiction. The forming process of the shield piece can be effectively simplified by the arrangement, and the production, installation and use of parts are more efficient and convenient.

Description

Novel connecting structure of shield pieces

Technical Field

The utility model relates to a shield constructs the piece, especially relates to a novel connection structure of shield piece.

Background

At present, a subway tunnel generally adopts shield construction, shield segments are main assembly members of the shield construction, are innermost barriers of the tunnel, bear the effects of resisting soil layer pressure, underground water pressure and some special loads and occupy the largest inner space in the tunnel. The subway shield pieces are connected by reserved connecting holes and bolts in a penetrating mode. The requirement on precision is high, and the connection is difficult.

Disclosure of Invention

In order to solve the technical problem or at least partially solve the technical problem, the present disclosure provides a novel connection structure of shield segments.

The utility model provides a novel connection structure of shield piece, including the section of jurisdiction of arranging in proper order, all connect through a plurality of connecting pieces between two arbitrary adjacent sections of jurisdiction, every connecting piece all is including setting up at the outside connecting block of two adjacent section of jurisdiction seams, and the surface symmetry of connecting block is equipped with the mounting hole of a pair of perpendicular to section of jurisdiction, and a pair of mounting hole is located the seam crossing both sides of adjacent section of jurisdiction respectively, and the section of jurisdiction corresponds pre-buried threaded sleeve of mounting hole department, passes through bolted connection between connecting block and the threaded sleeve.

Optionally, one end of the threaded sleeve, which is close to the connecting block, is coaxially connected with a guide cylinder, the guide cylinder extends out of the surface layer of the duct piece, and one end of the mounting hole, which is close to the guide cylinder, is correspondingly provided with a guide groove matched with the guide cylinder.

Optionally, the outer diameter of the guide cylinder is gradually reduced from the duct piece to the connecting block.

Optionally, the outer side of one end, close to the connecting block, of the threaded sleeve is coaxially provided with a limiting ring piece, and the surface of the limiting ring piece is flush with the surface of the duct piece.

Optionally, the outer wall of the threaded sleeve is provided with a plurality of protrusions.

Optionally, the inner diameter of the mounting hole is larger than the inner diameter of the threaded sleeve.

Optionally, the rod portion of the bolt is sleeved with a support sleeve.

Optionally, an outer chamfer is provided at an end of the support sleeve adjacent to the threaded sleeve.

Optionally, a backing ring is arranged between the head of the bolt and the connecting block, and the backing ring and the supporting sleeve are coaxially and integrally arranged.

Optionally, a groove for accommodating the connecting block is formed in the duct piece.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

this is disclosed through having set up the connecting block as the main adapting unit who connects two adjacent sections of jurisdiction, rethread bolt is fixed respectively between with connecting block and the section of jurisdiction to realize the interconnect between the section of jurisdiction. The arrangement can firstly effectively simplify the forming process of the shield plate, namely, the original bent through hole is eliminated; secondly, the threaded sleeves are pre-embedded on the shield piece, the bent structure in the original process is optimized into a straight structure, and the structural optimization directly enables the production, installation and use of parts to be more efficient and convenient.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic overall structure diagram of an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a connection block according to an embodiment of the disclosure;

FIG. 3 is a schematic structural view of a threaded sleeve according to an embodiment of the present disclosure;

fig. 4 is a schematic structural view of a support sleeve according to an embodiment of the disclosure.

Wherein, 1, a duct piece; 2. connecting blocks; 3. mounting holes; 4. a threaded sleeve; 5. a bolt; 6. a guide cylinder; 7. a guide groove; 8. a limit ring sheet; 9. a protrusion; 10. a support sleeve; 11. a backing ring; 12. and (4) a groove.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

In some embodiments, please refer to fig. 1 and 2, the present disclosure provides a novel connection structure for shield segments, including segments 1 arranged in sequence, any two adjacent segments 1 are connected through a plurality of connecting members, each connecting member includes a connecting block 2 disposed outside a joint of two adjacent segments 1, a pair of mounting holes 3 perpendicular to the segments 1 are symmetrically disposed on a surface of the connecting block 2, the mounting holes 3 are respectively located at two sides of the joint of the adjacent segments 1, threaded sleeves 4 are pre-embedded in the positions of the segments 1 corresponding to the mounting holes 3, and the connecting blocks 2 are connected with the threaded sleeves 4 through bolts 5.

In the above embodiment, then set up connecting block 2 as the main adapting unit who connects two adjacent sections of jurisdiction 1, rethread bolt 5 is fixed respectively between connecting block 2 and the section of jurisdiction 1, thereby realize the interconnect between the section of jurisdiction 1, this is different with prior art, generally adopt a complete crooked bolt among the prior art, shield the piece and then the crooked through-hole of setting up that corresponds, this not only requires highly to the shaping of bolt, and there is higher requirement to the forming process of shield piece, also very easily the error appears simultaneously, the difficult condition of connecting between the shield piece finally appears.

In this disclosure, through pre-buried threaded sleeve 4 on section of jurisdiction 1, rethread bolt 5 is connected it with connecting block 2, in this process, the actual atress has produced great difference with prior art, main atress part is no longer bolt 5 promptly, but connecting block 2, bolt 5 is then be used for being connected with connecting block 2, through the transfer and the structural change of above-mentioned power, can effectively simplify the forming process of shield piece, original crooked through-hole has been cancelled promptly, and pre-buried threaded sleeve 4 on shield piece, the structure setting of "crooked" on original technology has all been optimized into the structure of "straight line", this structural optimization directly can make the production and the installation of part use all more high-efficient and convenient.

In some embodiments, referring to fig. 2 and 3, one end of the threaded sleeve 4 close to the connecting block 2 is coaxially connected with a guide cylinder 6, the guide cylinder 6 extends out of the surface layer of the segment 1, and one end of the mounting hole 3 close to the guide cylinder 6 is correspondingly provided with a guide groove 7 matched with the guide cylinder 6.

In the above embodiment, considering that the mounting hole 3 of the connecting block 2 needs to be approximately aligned with the threaded sleeve 4 in the actual mounting process of the connecting block 2, and then the bolt 5 is screwed in respectively, the step of aligning the hole can occur, and the operation of a worker is influenced to a certain extent, so that the guide groove 7 on the connecting block 2 can be easily butted with the guide cylinder 6 on the threaded sleeve 4 by arranging the guide cylinder 6 and the guide groove 7, the bolt 5 can be directly screwed in by the operator, the step of aligning the hole is omitted, and the working efficiency is effectively increased.

In some embodiments, referring to fig. 2, the outer diameter of the guide cylinder 6 decreases from the tube sheet 1 to the connection block 2.

In the above embodiment, the structure of the guide cylinder 6 is optimized, and by the above arrangement, the end of the guide cylinder 6 has a tapered structure, so that the end can be easily butted with the end of the guide groove 7, and the working efficiency is further improved.

In some embodiments, referring to fig. 2, a stop ring piece 8 is coaxially disposed outside one end of the threaded sleeve 4 close to the connecting block 2, and the surface of the stop ring piece 8 is flush with the surface of the segment 1.

In the above-mentioned embodiment, then be to the further optimization of threaded sleeve 4 structure, through setting up spacing ring piece 8, can be at threaded sleeve 4's pre-buried in-process, try hard to keep mutually perpendicular between threaded sleeve 4 and the section of jurisdiction 1, reduce the error, and the extension length of steerable guide cylinder 6 to be favorable to later stage bolt 5 and threaded sleeve 4's butt joint and guide cylinder 6 and guide way 7's butt joint.

In some embodiments, referring to fig. 2, the outer wall of the threaded sleeve 4 is provided with a plurality of protrusions 9.

In the above embodiment, the structure of the threaded sleeve 4 is further optimized, and the protrusion 9 is disposed on the outer wall of the threaded sleeve 4, so that the embedded stability of the threaded sleeve 4 can be enhanced, and the overall strength of the structure can be improved.

In some embodiments, the inner diameter of the mounting hole 3 is larger than the inner diameter of the threaded sleeve 4.

In the above embodiment, consider that threaded sleeve 4 is connected through pre-buried and section of jurisdiction 1, can not be completely and section of jurisdiction 1 between mutually perpendicular, must have certain error, consequently the internal diameter of mounting hole 3 need be slightly big in order to provide the slope redundancy, and the inside of mounting hole 3 needs to provide certain headspace promptly to be convenient for bolt 5 and threaded sleeve 4's smooth butt joint.

In some embodiments, referring to fig. 1 and 4, the shaft of the bolt 5 is sleeved with a support sleeve 10.

In the above embodiment, since a certain reserved space is provided inside the mounting hole 3, a gap must exist between the rod portion of the bolt 5 and the mounting hole 3, and when the duct piece 1 is subjected to a large external force and the gap tends to open, the rod portion of the bolt 5 is deviated in the mounting hole 3, so that the support sleeve 10 is provided to properly fill the gap, thereby improving the overall stability of the structure.

In some embodiments, the end of the support sleeve 10 near the threaded sleeve 4 is provided with an external chamfer.

In the above embodiment, the support sleeve 10 is conveniently inserted into the mounting hole 3 by arranging the outer chamfer, in the actual mounting process of the support sleeve 10, after most of the support sleeve 10 and the bolt 5 enter the mounting hole 3, there is a certain probability that the bolt 5 is not easy to enter again due to an error between the bolt 5 and the threaded sleeve 4, at this time, an operator continues to screw the bolt 5, and under a large external force, the support sleeve 10 can be squeezed into the mounting hole 3, so that the squeezing process can be smoother by arranging the outer chamfer at the end part of the support sleeve.

In some embodiments, referring to fig. 1 and 4, a backing ring 11 is disposed between the head of the bolt 5 and the connecting block 2, and the backing ring 11 is coaxially integrated with the supporting sleeve 10.

In the above embodiment, the backing ring 11 is provided to strengthen the stability between the bolt 5 and the connecting block 2, and the backing ring is integrated with the supporting sleeve 10 to limit the supporting sleeve 10, so as to stabilize the position of the supporting sleeve 10, and further optimize the overall stability of the structure.

In some embodiments, referring to fig. 1, a groove 12 for accommodating the connecting block 2 is formed on the tube sheet 1.

In the above embodiment, the groove 12 is provided to accommodate the connecting block 2, so that the segment 1 has a flat surface.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a novel connection structure of shield piece, is including section of jurisdiction (1) of arranging in proper order, its characterized in that, arbitrary adjacent two all connect through a plurality of connecting pieces between section of jurisdiction (1), every the connecting piece is all including setting up adjacent two section of jurisdiction (1) outside connecting block (2) of seam crossing, the surface symmetry of connecting block (2) is equipped with a pair of perpendicular to mounting hole (3) of section of jurisdiction (1), and is a pair of mounting hole (3) are located adjacently respectively the seam crossing both sides of section of jurisdiction (1), section of jurisdiction (1) corresponds mounting hole (3) department pre-buries threaded sleeve (4), connecting block (2) with connect through bolt (5) between threaded sleeve (4).

2. The novel shield segment connecting structure according to claim 1, wherein a guide cylinder (6) is coaxially connected to one end of the threaded sleeve (4) close to the connecting block (2), the guide cylinder (6) extends out of the surface layer of the segment (1), and a guide groove (7) matched with the guide cylinder (6) is correspondingly arranged at one end of the mounting hole (3) close to the guide cylinder (6).

3. The novel shield segment connecting structure according to claim 2, wherein the outer diameter of the guide cylinder (6) is gradually reduced from the segment (1) to the connecting block (2).

4. The novel shield segment connecting structure of claim 2, wherein a limit ring segment (8) is coaxially arranged outside one end of the threaded sleeve (4) close to the connecting block (2), and the surface of the limit ring segment (8) is flush with the surface of the segment (1).

5. The novel shield segment connecting structure according to claim 2, wherein the outer wall of the threaded sleeve (4) is provided with a plurality of protrusions (9).

6. The novel shield segment connecting structure according to claim 1, wherein the inner diameter of the mounting hole (3) is larger than the inner diameter of the threaded sleeve (4).

7. The novel shield segment connecting structure according to claim 6, wherein the shaft portion of the bolt (5) is sleeved with a support sleeve (10).

8. The novel shield segment connecting structure according to claim 7, wherein one end of the support sleeve (10) close to the threaded sleeve (4) is provided with an external chamfer.

9. The novel shield segment connecting structure according to claim 7, wherein a backing ring (11) is arranged between the head of the bolt (5) and the connecting block (2), and the backing ring (11) and the supporting sleeve (10) are coaxially and integrally arranged.

10. The novel shield segment connecting structure according to claim 1, wherein the segment (1) is provided with a groove (12) for accommodating the connecting block (2).