CN114135292A - Shaft heading machine and modular multiplexing shield thereof - Google Patents
Shaft heading machine and modular multiplexing shield thereof Download PDFInfo
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- CN114135292A CN114135292A CN202111445427.9A CN202111445427A CN114135292A CN 114135292 A CN114135292 A CN 114135292A CN 202111445427 A CN202111445427 A CN 202111445427A CN 114135292 A CN114135292 A CN 114135292A
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- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000009412 basement excavation Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 230000035882 stress Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 230000005641 tunneling Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
- E21D1/03—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws
- E21D1/06—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws with shaft-boring cutters
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
- E21D1/08—Sinking shafts while moving the lining downwards
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a modular multiplexing shield body which comprises a plurality of outer ring blocks and a plurality of inner ring blocks, wherein the outer ring blocks are mutually spliced into a whole along the annular direction, the inner ring blocks are mutually spliced into a whole along the annular direction, the outer side wall of each inner ring block is detachably connected with the inner side wall of the corresponding outer ring block, and the inner side wall of each inner ring block is in power connection with the output end of a driving device of a shaft boring machine. Therefore, the outer ring blocks and the inner ring blocks are detachably connected, so that the shield body is composed of modularized parts, when the need of similar excavation diameter is met, the outer ring blocks are left in the vertical shaft to serve as permanent supports after the inner ring blocks and the outer ring blocks are disassembled, the inner ring blocks are removed and then are assembled and connected with new outer ring blocks again, the universality and interchangeability of the outer ring blocks and the inner ring blocks are realized, and the repeated use of the inner ring blocks is realized. The invention also discloses a vertical shaft heading machine which has the beneficial effects as described above.
Description
Technical Field
The invention relates to the technical field of heading machines, in particular to a modular multiplexing type shield body. The invention also relates to a shaft heading machine.
Background
With the rapid development of national economy, the urbanization process of China is accelerated continuously, and a large number of tunnel boring machines are needed for tunnel projects such as domestic urban subway tunnels, hydraulic tunnels, river crossing tunnels, railway tunnels, highway tunnels, municipal pipelines and the like in a quite long period in future.
The tunnel boring machine is a tunnel construction major technical equipment with high intelligence and integrating machine, electricity, liquid, light and computer technologies, and the working principle of the tunnel boring machine is to crush rocks by a cutter head and then carry out slag discharge. In China, Tunnel Boring machines are generally divided into two types, namely, open Tunnel Boring Machines (TBMs) and shield Tunnel Boring machines (shield machines). The TBM is mainly suitable for hard rock stratums with good surrounding rock properties, and the shield tunneling machine is mainly suitable for soft soil stratums rich in muddy water or mud and sand.
The shaft boring machine is a special tunnel boring machine, and the application occasions thereof are wide and extremely important. After the construction of the shaft heading machine, the shield body shell is used as a permanent support to be left in the shaft. The outer circle of the shield body of the large-scale or ultra-large-scale shaft tunneling machine is extremely large (more than 15 m), and in the products with single diameter and large batch, the machining precision of parts of the platform part of the shield body is extremely difficult to guarantee once and the interchangeability is extremely difficult. Moreover, most of shield body platforms commonly found in the market in large shaft excavation are customized, and no systematic and generalized processing scheme exists, so that the universality of the parts of the shield body is poor, and the parts of each shield body cannot be commonly used when similar excavation diameters are needed, and must be re-processed and assembled.
Therefore, how to realize the universality and interchangeability of the shield parts and realize the repeated use of the shield parts is a technical problem faced by those skilled in the art.
Disclosure of Invention
The invention aims to provide a modular multiplexing type shield, which can realize the universality and interchangeability of shield parts and realize the repeated use of the shield parts. It is a further object of the present invention to provide a shaft boring machine.
In order to solve the technical problem, the invention provides a modular multiplexing shield body which comprises a plurality of outer ring blocks and a plurality of inner ring blocks, wherein the outer ring blocks are mutually spliced into a whole along the annular direction, the inner ring blocks are mutually spliced into a whole along the annular direction, the outer side wall of each inner ring block is detachably connected with the inner side wall of the corresponding outer ring block, and the inner side wall of each inner ring block is in power connection with the output end of a driving device of a shaft boring machine.
Preferably, 8-16 outer ring blocks and 8-16 inner ring blocks are distributed on the circumferential direction.
Preferably, the outer side wall of each outer ring segment is a circular arc surface with a uniform curvature, and the inner side wall of each outer ring segment is a plane.
Preferably, the outer side wall of each inner ring segment is a plane matched with the inner side wall of the outer ring segment, and the inner side wall of each inner ring segment is an arc surface matched with the outer circular surface of the output end.
Preferably, clearance cavities for releasing residual stress are formed in the outer side areas of the circumferential side walls of two adjacent inner ring blocks, and elastic plugging support blocks are filled in the clearance cavities.
Preferably, the inner side areas of the circumferential side walls of two adjacent inner ring segments form a detachable connection.
Preferably, the outer side wall of each inner ring segment is connected with the inner side wall of the corresponding outer ring segment through a circumferential connecting plate.
Preferably, the circumferential side walls of two adjacent outer ring blocks and the circumferential side walls of two adjacent inner ring blocks are connected through radial connecting plates.
Preferably, each circumferential connecting plate and each radial connecting plate are provided with a positioning pin for connecting and positioning and a fastener for reinforcing connection.
The invention also provides a shaft heading machine which comprises a driving device and a modular multiplexing type shield body, wherein the modular multiplexing type shield body is any one of the modular multiplexing type shield bodies.
The invention provides a modular multiplexing type shield body which mainly comprises an outer ring block and an inner ring block. Wherein, the outer lane piecemeal distributes simultaneously has the polylith, and each outer lane piecemeal distributes and splices formula structure as an organic whole as one piece each other along hoop (or circumference) direction in the shield body, forms the outer fringe structure of whole shield body. The inner ring blocks are also simultaneously distributed with a plurality of blocks, and all the inner ring blocks are distributed in the shield body along the circumferential direction and are mutually spliced into an integral structure to form the inner ring structure of the whole shield body. Meanwhile, the outer side wall of each inner ring block and the inner side wall of the corresponding outer ring block form detachable connection, so that the connection and the detachment operation between the inner ring block and the outer ring block can be realized. And the inner side wall of each inner ring block is in power connection with the output end of a driving device of the shaft boring machine, so that the output end of the driving device outputs power to each inner ring block and further transmits the power to each outer ring block, and the power driving of the whole shield body is realized. Therefore, according to the modular multiplexing shield body provided by the invention, the outer edge structure of the shield body is formed by splicing a plurality of outer ring blocks with the same structure, the inner ring structure of the shield body is formed by splicing a plurality of inner ring blocks with the same structure, and the outer ring blocks and the inner ring blocks are detachably connected, so that the whole structure of the shield body is formed by modular parts.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of a-a cross-sectional structure shown in fig. 1.
Fig. 3 is a schematic structural diagram of an outer ring segment.
Fig. 4 is a schematic diagram of a specific structure of the inner ring segment.
Fig. 5 is a schematic diagram showing a detailed structure of the gap cavity.
Fig. 6 is a schematic diagram of a specific structure of the blocking support block.
Fig. 7 is a schematic view of a cross-sectional structure D-D shown in fig. 1.
Fig. 8 is a schematic view of a cross-sectional structure E-E shown in fig. 1.
Wherein, in fig. 1-8:
an output terminal-a;
the sealing device comprises an outer ring block-1, an inner ring block-2, a gap cavity-3, a sealing supporting block-4, a circumferential connecting plate-5, a radial connecting plate-6, a positioning pin-7 and a fastener-8.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, fig. 1 is a schematic overall structure diagram of an embodiment of the present invention, and fig. 2 is a schematic sectional structure diagram of a-a shown in fig. 1.
In a specific embodiment provided by the present invention, the modular multiplexing shield mainly includes an outer ring segment 1 and an inner ring segment 2.
Wherein, the outer lane piecemeal 1 distributes simultaneously has the polylith, and each outer lane piecemeal 1 distributes and splices formula structure as an organic whole as one piece each other along hoop (or circumference) direction in the shield body, forms the outer fringe structure of whole shield body.
The inner ring blocks 2 are also distributed with a plurality of blocks simultaneously, and the inner ring blocks 2 are distributed in the shield body along the circumferential direction (or circumferential direction) and are mutually spliced into an integral structure to form the inner ring structure of the whole shield body.
Meanwhile, the outer side wall of each inner ring block 2 forms detachable connection with the inner side wall of the corresponding outer ring block 1, so that the connection and detachment operation between the inner ring block 2 and the outer ring block 1 can be realized.
And the inner side wall of each inner ring block 2 is in power connection with the output end a of the driving device of the shaft boring machine, so that the output end a of the driving device outputs power to each inner ring block 2 and further transmits the power to each outer ring block 1, and power driving of the whole shield body is achieved.
Therefore, in the modular multiplexing shield provided by the embodiment, because the outer edge structure of the shield is formed by splicing a plurality of outer ring blocks 1 with the same structure, the inner ring structure of the shield is formed by splicing a plurality of inner ring blocks 2 with the same structure, and the outer ring blocks 1 and the inner ring blocks 2 are detachably connected, the whole structure of the shield is formed by modular parts, when the shield is required to be of a similar excavation diameter, the outer ring blocks 1 are left in a vertical shaft as permanent supports after the inner ring blocks 2 and the outer ring blocks 1 are disassembled, and the inner ring blocks 2 are removed and then are assembled and connected with new outer ring blocks 1 again, so that the universality and interchangeability of the outer ring blocks 1 and the inner ring blocks 2 are realized, and the repeated use of the inner ring blocks 2 is realized.
As shown in fig. 3 and 4, fig. 3 is a schematic structural diagram of an outer ring segment 1, and fig. 4 is a schematic structural diagram of an inner ring segment 2.
In an alternative embodiment of the outer ring segment 1 and the inner ring segment 2, the outer ring segment 1 and the inner ring segment 2 are respectively provided with 8-16 segments in the circumferential direction of the shield body. Taking the outer ring blocks 1 and the inner ring blocks 2 respectively provided with 8 as an example, because the structures of the outer ring blocks 1 are the same, and the structures of the inner ring blocks 2 are the same, the outer ring blocks 1 and the inner ring blocks 2 are uniformly distributed in the circumferential direction of the shield body, each outer ring block 1 and each inner ring block 2 correspond to each other, each group of outer ring blocks 1 and inner ring blocks 2 respectively occupy a 45-degree circle center angle area, and the outer ring structure and the inner ring structure of the shield body are formed after being spliced with each other.
Generally, considering the requirement of shaft tunneling, the outer side wall of each outer ring block 1 is an arc surface with the same curvature, and thus the outer ring blocks 1 are spliced with each other to ensure that a full-circle outer ring structure with the same curvature radius is formed, and further the outer diameter of a shaft tunneling tunnel is ensured.
Meanwhile, the inner side wall of each outer ring block 1 is a plane in order to facilitate connection with the inner ring block 2. Correspondingly, the outer side wall of each inner ring block 2 is also a plane and is matched with the inner side wall of each outer ring block 1, and the inner side wall and the outer side wall can be tightly attached to each other. In addition, in order to be connected with the output end a of the driving device of the shaft boring machine conveniently, the inner side wall of each inner ring block 2 is connected with the arc surface so as to be matched and connected with the outer circular surface of the output end a, meanwhile, the inner side wall of each inner ring block 2 can be indirectly connected with the hinge seat in a matched mode, and the inner side wall of each inner ring block 2 is connected with the pin shaft hole in a positioned mode through the screw hole and the pin shaft hole in the inner ring block 2. So set up, outer lane piecemeal 1's whole shape is the isosceles trapezoid structure that the base is the arc surface, and inner circle piecemeal 2's whole shape is the isosceles trapezoid structure that the topside is the arc surface to make two outer lane piecemeals 1 adjacent in the week hug closely mutually through the waist limit and realize the concatenation of each other, and in the same way, two inner lane piecemeals 2 adjacent in the week also can hug closely mutually through the waist limit and realize the concatenation of each other.
As shown in fig. 5, fig. 5 is a schematic structural diagram of the gap cavity 3.
In addition, considering that the whole size of the shield body is large, the shield body can only be transported in blocks during transportation, and after the shield body reaches a construction site, the residual stress of a workpiece (such as the inner ring blocks 2) can be gradually released, so that a large amount of time is required for finishing during construction site assembly, for this reason, in the embodiment, the clearance cavities 3 are respectively formed in the outer side areas of the circumferential side walls of two adjacent inner ring blocks 2, so as to provide a release space of the residual stress for each inner ring block 2 through the clearance cavities 3, and simultaneously, because the clearance cavities 3 also cover part of the outer ring blocks 1, a release space of the partial residual stress is also provided for the corresponding outer ring blocks 1. In general, the clearance cavity 3 is triangular in shape, which enables the inner ring segment 2 to relax in the circumferential direction and also enables the outer ring segment 1 to relax in the radial direction. Of course, the specific shape of the clearance cavity 3 is not fixed, and is also adjusted according to the actual stress release requirement.
As shown in fig. 6, fig. 6 is a schematic diagram of a specific structure of the blocking support block 4.
Further, in order to ensure the structural integrity, the gap cavities 3 are filled with blocking supporting blocks 4. Specifically, the plugging support block 4 has elasticity, can be plugged into each clearance cavity 3 through elastic deformation, increases the support strength, and adapts to the installation environment of each clearance cavity 3 with different microstructures after the residual stress is released.
As shown in fig. 8, fig. 8 is a schematic view of the cross-sectional structure E-E shown in fig. 1.
In addition, considering that the outer ring segment 1 as a whole is left in the shaft after the shaft is driven into the layer, and the inner ring segment 2 can be removed for reuse, in order to facilitate the disassembly work of the inner ring segment 2, in the embodiment, the inner side regions of the circumferential side walls of two adjacent inner ring segments 2 are detachably connected (the outer side regions are provided with clearance cavities 3). Specifically, in the present embodiment, a radial connecting plate 6 is provided between inner side regions of circumferential side walls of two adjacent inner ring segments 2, so that the two adjacent inner ring segments 2 can be detachably connected by the radial connecting plate 6. Meanwhile, the embodiment also comprises a positioning pin 7 and a plurality of fasteners 8 which are arranged on the radial connecting plate 6 in a penetrating mode, so that the positioning pin 7 can be used for realizing the mutual positioning of the two adjacent inner ring blocks 2, and the connecting stability between the two inner ring blocks 2 can be enhanced through the fasteners 8.
Similarly, the two adjacent outer ring segments 1 can be connected through the radial connecting plate 6, and the positioning pin 7 and the fastener 8 can be arranged on the radial connecting plate 6 in a penetrating manner, which is not described herein again. Considering that the outer ring blocks 1 do not need to be disassembled after being spliced, each outer ring block 1 can be fixedly connected with the corresponding radial connecting plate 6 through a welding process.
As shown in fig. 7, fig. 7 is a schematic view of the cross-sectional structure D-D shown in fig. 1.
As for the connection between the inner ring segments 2 and the outer ring segments 1, in this embodiment, a circumferential connecting plate 5 is disposed between the outer sidewall of each inner ring segment 2 and the inner sidewall of each corresponding outer ring segment 1, so as to realize the detachable connection between each inner ring segment 2 and the outer ring segment 1 through the circumferential connecting plate 5. Specifically, the circumferential connecting plate 5 can be provided with a positioning pin 7 for positioning the inner ring segment 2 and the outer ring segment 1, and meanwhile, the threaded connection is realized through a fastening piece 8 such as a bolt, and the fastening piece 8 is used for enhancing the connection stability between the two.
Of course, the connection mode between the inner ring segment 2 and the outer ring segment 1 is not limited to the above-mentioned situation of matching the positioning pin 7 and the fastener 8 through the circumferential connecting plate 5, and a key groove connection structure, a clamping connection structure and the like can also be adopted.
In addition, in the modular multiplexing shield provided by this embodiment, during assembly, the outer ring segment 1 is first assembled and welded. Specifically, during machining, datum lines are drawn according to the excircle diameter and the 45-degree angle direction of the excavation diameter of the vertical shaft heading machine, and meanwhile, the center line of a radial connecting plate 5 between an outer ring block 1 and an inner ring block 2 is drawn according to the position size of the inner ring and outer ring connecting surfaces. Meanwhile, a 2mm reference plane is adjusted by using an adjusting shim in the area, multiple groups of reference points are guaranteed, and after the reference plane is qualified, a process block with a specific size is adopted along a blocking line for limiting, so that the welding reference and the subsequent assembly reference of the whole workpiece during welding are determined.
And then, welding the outer ring blocks 1 according to a drawing, wherein the radial connecting plates 6 on two sides of the outer ring blocks 1 are not welded. The appearance of the radial connecting plates 6 is the same, the matching surfaces of the radial connecting plates 6 are machined and then are welded in a matched mode, then the gap is machined, the radial connecting plates are welded in a matched mode, assembly and insertion welding are conducted during welding, the assembling relation of the two adjacent radial connecting plates 6 is guaranteed, and the influence of welding deformation on the assembling relation is reduced.
And then, combining the outer ring blocks 1 according to a datum line reference marked on the ground, reserving the installation position of the radial connecting plate 6, and spot-welding and fixing the radial connecting plate on the ground. And integrally hoisting the radial connecting plates 6 among the outer ring blocks 1, integrally welding the radial connecting plates 6 and the outer ring blocks 1, and reserving machining allowance. And the circumference connecting plate 5 that outer lane piecemeal 1 and inner circle piecemeal 2 cooperateed need carry out the machine tooling with the fitting surface alone after the split, this because the appearance of circumference connecting plate 5 is incomplete unanimous, and the group is difficult to realize to the welding.
And finally, numbering the outer ring blocks 1 which are completely manufactured, wherein the numbering is 1-8 in the case of 8 blocks, correspondingly marking and transplanting during manufacturing, and separating subsequent processing according to the block numbering and the actual site. Generally, the outer ring block 1 can be divided into 4 groups, specifically, a first block plus a fifth block, a second block plus a sixth block, a third block plus a seventh block, and a fourth block plus a sixth block.
And integrally folding and assembling and welding the inner circle and the outer circle of the second stepping. Firstly, determining the center of a main body, lofting a plurality of concentric reference circles, octagons, dividing lines, partitioning lines and the like on a platform, positioning a process base plate according to the positioning size in the drawing, and leveling a plurality of base plates within 3mm horizontally.
However, the 8 outer ring blocks 1 of the outer ring are sequentially spliced into a whole, and then the radial connecting plates 6 between the outer ring blocks 1 are threaded with process pins so as to ensure the positioning accuracy and are reinforced by bolts.
Then, hanging the inner ring blocks 2 in sequence, paying attention to align 45-degree block lines, ensuring the gap control between the outer ring and the outer ring, and adjusting the flatness of the whole partition plate to be within 10 mm. And then, a process pin is penetrated on the radial connecting plate 6 between the inner ring blocks 2 so as to ensure the positioning precision and is reinforced by bolts.
And finally, hoisting the circumferential connecting plate 5 between the outer ring block 1 and the inner ring block 2, then threading a technical pin so as to ensure the positioning precision, reinforcing by adding bolts, and adding welding reinforcing blocks at the upper end surface of the circumferential connecting plate 5 for connection after the circumferential connecting plate is qualified.
And thirdly, processing each circumferential connecting plate 5 and each radial connecting plate 6 according to a drawing after welding is finished, and performing aging treatment on the workpiece before processing to reduce processing deformation.
And fourthly, after the whole shield body is machined, assembling the shield body to a construction site, and welding the reserved clearance cavity 3 according to the design condition.
And in the fifth step, when the requirement of similar excavation diameter exists, the inner ring of the shield body can be detached and reused, and the outer ring of the shield body can be re-assembled with the inner ring of the shield body after being re-assembled according to the first step.
The embodiment further provides a shaft heading machine, which includes a driving device and a modular multiplexing type shield, wherein the specific content of the modular multiplexing type shield is the same as the related content, and is not described herein again.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. 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 invention. Thus, the present invention 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 (10)
1. The utility model provides a multiplexing type shield of modularization which characterized in that includes that a plurality of splice outer lane piecemeals (1) as an organic whole each other along the hoop, a plurality of splice inner circle piecemeals (2) as an organic whole each other along the hoop, each the lateral wall of inner circle piecemeal (2) respectively with correspond separately the inside wall of outer lane piecemeal (1) forms can dismantle the connection, and each the inside wall of inner circle piecemeal (2) respectively with shaft boring machine's drive arrangement's output (a) power connection.
2. The modular multiplexing shield according to claim 1, wherein the number of the outer ring segments (1) and the number of the inner ring segments (2) are 8-16.
3. The modular reusable shield according to claim 2, characterized in that the outer side wall of each outer segment (1) is a circular arc surface with a uniform curvature, and the inner side wall of each outer segment (1) is a plane.
4. The modular multiplexing shield according to claim 3, wherein the outer side wall of each inner ring segment (2) is a plane surface which is matched with the inner side wall of the outer ring segment (1), and the inner side wall of each inner ring segment (2) is a circular arc surface which is matched with the outer circular surface of the output end (a).
5. The modular multiplexing-type shield body according to claim 1, wherein clearance cavities (3) for releasing residual stress are formed in the outer side areas of the circumferential side walls of two adjacent inner ring segments (2), and elastic plugging support blocks (4) are filled in the clearance cavities (3).
6. Modular reusable shield according to claim 5, characterized in that the inner areas of the circumferential side walls of two adjacent inner ring segments (2) form a detachable connection.
7. The modular multiplexing shield according to claim 1, wherein the outer side wall of each inner ring segment (2) is connected to the inner side wall of the corresponding outer ring segment (1) by a circumferential connecting plate (5).
8. The modular multiplexing shield according to claim 7, wherein the circumferential side walls of two adjacent outer ring segments (1) and the circumferential side walls of two adjacent inner ring segments (2) are connected by a radial connecting plate (6).
9. The modular multiplexing shield according to claim 8, characterized in that each circumferential web (5) and each radial web (6) is pierced with a positioning pin (7) for positioning the connection and a fastener (8) for reinforcing the connection.
10. Shaft boring machine comprising a drive and a modular multiplex shield, characterized in that the modular multiplex shield is embodied as a modular multiplex shield according to any one of claims 1-9.
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| CN202111445427.9A CN114135292B (en) | 2021-11-30 | 2021-11-30 | Shaft development machine and modularized multiplexing shield body thereof |
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| CN202111445427.9A CN114135292B (en) | 2021-11-30 | 2021-11-30 | Shaft development machine and modularized multiplexing shield body thereof |
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| CN114135292B CN114135292B (en) | 2024-05-07 |
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