阅读说明：本技术 一种微型盾构机 (Miniature shield machine ) 是由 贾连辉 胡燕伟 阴书玉 叶蕾 郭沛霖 徐纯杰 张永辉 刘清云 张开 于 2021-09-14 设计创作，主要内容包括：本发明提供了一种微型盾构机,包括主机系统,所述主机系统含有从前后依次设置的前盾(2)、中盾(6)和尾盾(9),前盾(2)与中盾(6)通过球型铰接总成(12)连接,中盾(6)与尾盾(9)也通过球型铰接总成(12)连接。该微型盾构机既可以满足小曲线转弯半径的挖掘工况,又可以实现微型泥水盾构机中各系统在狭小空间的布置需求。(The invention provides a miniature shield machine which comprises a host system, wherein the host system comprises a front shield (2), a middle shield (6) and a tail shield (9) which are sequentially arranged from front to back, the front shield (2) and the middle shield (6) are connected through a spherical hinge assembly (12), and the middle shield (6) and the tail shield (9) are also connected through the spherical hinge assembly (12). The miniature shield machine can meet the excavation working condition of a small curve turning radius, and can meet the arrangement requirement of each system in a narrow space in the miniature slurry shield machine.)

1. The utility model provides a miniature shield constructs machine, its characterized in that, miniature shield constructs machine includes the host system, the host system contains anterior shield (2), well shield (6) and tail shield (9) that set gradually from the past back, and anterior shield (2) are connected through articulated assembly (12) of ball-type with well shield (6), and well shield (6) are also connected through articulated assembly (12) of ball-type with tail shield (9).

2. The miniature shield tunneling machine according to claim 1, wherein the spherical hinge assembly (12) comprises an inner spherical hinge ring (1203) and an outer spherical hinge ring (1204) which are sleeved with each other, a sealing structure is sleeved between the inner spherical hinge ring (1203) and the outer spherical hinge ring (1204), and the sealing structure comprises a VD sealing ring (1201) and a finger-type sealing ring (1202) which are arranged at a distance from each other in the front-back direction.

3. The micro-shield machine of claim 2,

in a spherical hinge assembly (12) for connecting an anterior shield (2) and a middle shield (6), a spherical hinge inner ring (1203) is fixedly connected with the front end of the middle shield (6), and a spherical hinge outer ring (1204) is fixedly connected with the rear end of the anterior shield (2);

in a spherical hinge assembly (12) for connecting a middle shield (6) and a tail shield (9), a spherical hinge inner ring (1203) is fixedly connected with the front end of the tail shield (9), and a spherical hinge outer ring (1204) is fixedly connected with the rear end of the middle shield (6).

4. The miniature shield machine according to claim 1, characterized in that four driving oil cylinders (4) are arranged between the front shield (2) and the middle shield (6), the four driving oil cylinders (4) are uniformly arranged along the circumference of the front shield (2) at intervals, the driving oil cylinders (4) can stretch out and draw back along the front-back direction, the front ends of the driving oil cylinders (4) are hinged with the front shield (2) through a rotating shaft (401), the rear ends of the driving oil cylinders (4) are hinged with the middle shield (6) through a rotating shaft (401), and the axis of the rotating shaft (401) is arranged along the diameter direction of the front shield (2).

5. The miniature shield machine according to claim 1, characterized in that four driving oil cylinders (4) are arranged between the middle shield (6) and the tail shield (9), the four driving oil cylinders (4) are uniformly arranged along the circumference of the middle shield (6) at intervals, the driving oil cylinders (4) can stretch out and draw back along the front-back direction, the front ends of the driving oil cylinders (4) are hinged with the middle shield (6) through a rotating shaft (401), the rear ends of the driving oil cylinders (4) are hinged with the tail shield (9) through a rotating shaft (401), and the axis of the rotating shaft (401) is arranged along the diameter direction of the middle shield (6).

6. The miniature shield machine according to claim 1, characterized in that a hydraulic system main machine (5) is arranged in the middle shield (6), and a thrust cylinder (8) is arranged in the tail shield (9).

7. The shield machine of claim 1, characterized in that the shield machine further comprises a rear mating system, the host system and the rear mating system are arranged at a front-rear interval, a segment crane (21) is arranged between the host system and the rear mating system, a segment erector (10) is arranged in the rear portion of the host system, the rear mating system comprises a trailer group, the front end of the segment crane (21) is connected with the segment erector (10), and the rear end of the segment crane (21) is connected with the trailer group.

8. The micro shield machine of claim 1, further comprising a back-up system, the host system and the rear matching system are arranged at intervals in the front and back, the rear matching system comprises a trailer group and a trailer track (25), the trailer group comprises a plurality of trailers arranged along the front-back direction, each trailer comprises an upper cross beam (22), a stand column (23) and a bottom platform (24) which are sequentially connected from top to bottom, each bottom platform (24) is provided with a marshalling train track (20), a wheel pair (19) is arranged below each bottom platform (24), each wheel pair (19) is positioned on each trailer track (25), and two adjacent marshalling train tracks (20) are connected through a detachable short track, the foremost trailer in the plurality of trailers is a first trailer (13), and the rest of the plurality of trailers are rear trailers (15).

9. The micro shield tunneling machine according to claim 8, wherein in the first trailer (13), the track center line of the consist train track (20) and the track center line of the trailer track (25) coincide in the vertical direction, and the upper beam (22) is provided with the muddy water circulating pipe (7).

10. The micro shield tunneling machine according to claim 8, wherein in the rear trailer (15), the track center line of the marshalling train track (20) is parallel to the track center line of the trailer track (25), the track center line of the marshalling train track (20) is vertically offset from the track center line of the trailer track (25), the marshalling train track (20) is located on one side of the upright (23), the other side of the upright (23) is provided with an equipment installation area, a fluid hydraulic electric circulation device (14) is arranged in the equipment installation area, the upper cross beam (22) is provided with a muddy water circulation pipeline (7) and a pipeline (18), and the pipeline (18) is connected with the fluid hydraulic electric circulation device (14);

switches (16) are provided on the rearmost trailer of the plurality of trailers, and the switches (16) can guide a consist train (17) to be driven from a trailer track (25) into a consist train track (20) of the trailer.

Technical Field

The invention relates to the field of tunnel excavation equipment, in particular to a miniature shield machine.

Background

At present, the municipal projects of the miniature diameter pipelines in cities such as Guangzhou, Shenzhen, Beijing and the like are gradually constructed by adopting a shield method, and in addition, other projects such as oil tunnels, natural gas tunnels, coal transportation channels and the like are also constructed by adopting the shield method. Compared with the traditional excavation technologies such as open excavation and pipe jacking, the shield method is gradually and widely researched and applied due to the advantages of safety, high efficiency, strong adaptability and the like.

At present, shield machine manufacturers in China have research, design and application on micro tunnel boring machines, and a plurality of key technologies related to 2 m-level micro tunnel boring machines lack targeted breakthrough and do not form mature design. Compared with the conventional shield (the excavation diameter is more than or equal to 4m), the micro shield has great difference in the integrated arrangement of the whole machine due to the abnormal and narrow space.

Disclosure of Invention

The invention aims to provide a miniature shield machine, which can meet the excavation working condition of a small curve turning radius and meet the arrangement requirement of each system in a miniature slurry shield machine in a narrow space (namely the shield machine with the excavation diameter less than or equal to 3 m).

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a miniature shield constructs machine, includes the host system, the host system contains anterior shield, well shield and the tail shield that sets gradually from the past after, and anterior shield and well shield are connected through the articulated assembly of ball-type, and well shield and tail shield also are connected through the articulated assembly of ball-type.

The invention has the beneficial effects that: the micro shield machine breaks through the research on the whole machine integration technology of the micro tunneling machine in a narrow space, and is suitable for the excavation construction of the micro tunnel with a small curve turning.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic front view of a main machine system part of the micro shield tunneling machine of the invention.

Fig. 2 is a schematic front view of a rear mating system portion of the micro shield tunneling machine according to the present invention.

Fig. 3 is an enlarged schematic view of a portion D in fig. 1.

Fig. 4 is a sectional view taken along a-a in fig. 1.

Fig. 5 is a schematic diagram of arrangement of eight master cylinders along the direction E in fig. 1.

Fig. 6 is a sectional view taken along the direction B-B in fig. 1.

Fig. 7 is a sectional view taken along the direction C-C in fig. 1.

1. A cutter head; 2. anterior shield; 3. main driving; 4. an active oil cylinder; 5. a hydraulic system main machine; 6. middle shield; 7. a muddy water circulating pipeline; 8. a propulsion cylinder; 9. a tail shield; 10. a segment erector; 11. a front shield anti-twisting block; 12. a spherical hinge assembly; 13. a first trailer; 14. a fluid hydraulic electrical circulation device; 15. a rear trailer; 16. a turnout; 17. marshalling a train; 18. a pipeline; 19. a pair of wheels; 20. marshalling the train track; 21. a segment crane; 22. an upper cross beam; 23. a column; 24. a bottom platform; 25. a trailer track; 26. a segment tunnel;

401. a rotating shaft;

1201. VD sealing rings; 1202. a finger-type seal ring; 1203. an inner ring of the spherical hinge; 1204. an outer ring of the spherical hinge;

2101. a crane beam; 2102. provided is a crane hoist.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

A miniature shield machine comprises a host system, wherein the host system comprises a front shield 2, a middle shield 6 and a tail shield 9 which are sequentially arranged from front to back, the front shield 2 and the middle shield 6 are connected through a spherical hinge assembly 12, and the middle shield 6 and the tail shield 9 are also connected through the spherical hinge assembly 12, as shown in figure 1.

In order to meet the requirement of small curve turning, the invention provides a sectional type double-active spherical hinged shield body design. Namely, the shield body of the micro shield machine is divided into a front shield, a middle shield and a tail shield, and each two sections are connected by a spherical hinge assembly 12. Compared with the prior art, the construction with small curvature radius can be well realized by utilizing the double-ball type articulated system, and the construction of a curve with R less than or equal to 50m can be met.

In this embodiment, the ball hinge assembly 12 includes a ball hinge inner ring 1203 and a ball hinge outer ring 1204 which are sleeved inside and outside, the outer surface of the ball hinge inner ring 1203 is a part of a spherical surface, the ball hinge inner ring 1203 and the ball hinge outer ring 1204 are connected in a matching manner, a sealing structure is sleeved between the ball hinge inner ring 1203 and the ball hinge outer ring 1204, and the sealing structure includes a VD sealing ring 1201 and a finger-shaped sealing ring 1202 which are arranged at a front-rear interval.

Specifically, the sealing structure comprises two VD sealing rings 1201 and one finger-shaped sealing ring 1202 which are arranged at intervals in the front and back, and the finger-shaped sealing ring 1202 is of a detachable structure, namely the finger-shaped sealing ring 1202 is detachably connected with the spherical hinge outer ring 1204, so that the requirement of a high water pressure working condition can be met.

In the spherical hinge assembly 12 connecting the front shield 2 and the middle shield 6 (i.e. the spherical hinge assembly 12 in front), the rear end of the inner spherical hinge ring 1203 is fixedly connected with the front end of the middle shield 6, and the front end of the outer spherical hinge ring 1204 is fixedly connected with the rear end of the front shield 2, as shown in fig. 3.

In the spherical hinge assembly 12 (i.e. the spherical hinge assembly 12 at the rear) connecting the middle shield 6 and the tail shield 9, the rear end of the inner spherical hinge ring 1203 is fixedly connected with the front end of the tail shield 9, and the front end of the outer spherical hinge ring 1204 is fixedly connected with the rear end of the middle shield 6.

In this embodiment, four driving oil cylinders 4 are arranged between a front shield 2 and a middle shield 6, the four driving oil cylinders 4 are uniformly arranged along the circumferential direction of the front shield 2 at intervals, the driving oil cylinders 4 can stretch in the front-back direction, the front ends of the driving oil cylinders 4 are hinged to the front shield 2 through a rotating shaft 401, the rear ends of the driving oil cylinders 4 are hinged to the middle shield 6 through the rotating shaft 401, and the axis of the rotating shaft 401 is arranged along the diameter direction of the front shield 2. Specifically, the front end of the piston rod of the master cylinder 4 is hinged to the front shield 2 through a rotating shaft 401, and the rear end of the cylinder barrel of the master cylinder 4 is hinged to the middle shield 6 through the rotating shaft 401, as shown in fig. 4.

In this embodiment, four driving oil cylinders 4 are arranged between the middle shield 6 and the tail shield 9, the four driving oil cylinders 4 are uniformly arranged along the circumference of the middle shield 6 at intervals, the driving oil cylinders 4 can stretch in the front-back direction, the front ends of the driving oil cylinders 4 are hinged to the middle shield 6 through a rotating shaft 401, the rear ends of the driving oil cylinders 4 are hinged to the tail shield 9 through the rotating shaft 401, and the axis of the rotating shaft 401 is arranged along the diameter direction of the middle shield 6. Specifically, the front end of a piston rod of the driving oil cylinder 4 is hinged to the middle shield 6 through a rotating shaft 401, and the rear end of a cylinder barrel of the driving oil cylinder 4 is hinged to the tail shield 9 through the rotating shaft 401.

In the front-to-back direction, the four driving oil cylinders 4 between the front shield 2 and the middle shield 6 are opposite to the four driving oil cylinders 4 between the middle shield 6 and the tail shield 9 one by one. Alternatively, in the front-to-rear direction, the four master cylinders 4 between the front shield 2 and the middle shield 6 and the four master cylinders 4 between the middle shield 6 and the tail shield 9 are arranged in a staggered manner, as shown in fig. 5. The up-down and left-right turning function of the main machine system of the micro shield machine is realized through the extension and retraction of the driving oil cylinder 4.

In the embodiment, an anterior shield torsion-proof block 11 is arranged in the anterior shield 2, the anterior shield torsion-proof block 11 comprises an inner inserted rod and an outer sleeve which are sleeved inside and outside, the inner inserted rod extends along the anterior-posterior direction, an annular movable gap exists between the inner inserted rod and the outer sleeve, the annular movable gap is 5cm-20cm, the inner inserted rod is fixedly connected with the anterior shield 2, the outer sleeve is fixedly connected with a spherical hinge inner ring 1203 in the anterior spherical hinge assembly 12, and the inner inserted rod can only rotate within the range of the movable gap, so that the rotation range of the anterior shield 2 relative to the middle shield 6 can be limited.

In this embodiment, the host system has a characteristic of large length-diameter ratio, the front shield 2 includes a cutter 1 and a main drive 3, the middle shield 6 is internally provided with a hydraulic system host 5, and the tail shield 9 is internally provided with a propulsion cylinder 8. The hydraulic system host 5 provides power for the shield tunneling system (the main drive 3 and the propulsion oil cylinder 8) and the driving oil cylinder 4. The cylinder barrel of the propulsion oil cylinder 8 is fixedly connected with the tail shield 9, the piston rod of the propulsion oil cylinder 8 can be abutted against the segment tunnel 26, and the propulsion oil cylinder 8 can push the host system to advance when extending out.

The hydraulic system host 5 is arranged inside the shield body (middle shield 6), and the arrangement space of the whole machine is reasonably planned. (remark: the conventional shield machine (excavation diameter is more than or equal to 4m) usually arranges a hydraulic system on a rear matching trailer, and a host 5 of the hydraulic system is arranged in a shield body because the space of the rear matching system of the micro shield is narrow), so that the available space of the host is increased, the key parts in the host can be reasonably arranged in the limited space, and the host system realizes the purpose by increasing the length.

In this embodiment, the miniature shield machine further includes a back supporting system, the host system with back supporting system is set up at intervals from front to back, the host system with be equipped with segment crane 21 between the back supporting system, be equipped with segment erector 10 in the rear portion of host system, back supporting system contains trailer group, the relevant equipment of fluid hydraulic electric circulation system and pipeline, segment transportation system etc. segment crane 21's front end and segment erector 10 are connected, segment crane 21's rear end with trailer group connects, as shown in fig. 1 and 2.

Specifically, the back supporting system contains trailer group and trailer track 25, trailer group contains a plurality of trailers that set up along the fore-and-aft direction, the foremost trailer among a plurality of trailers is trailer 13 No. one, remaining trailer among a plurality of trailers is rear trailer 15. The segment crane 21 comprises a crane beam 2101 and a crane hoist 2102, the front end of the crane beam 2101 is fixedly connected with the segment erector 10, and the rear end of the crane beam 2101 is fixedly connected with the first trailer 13.

The miniature shield machine further comprises a muddy water circulating pipeline 7, the front end of the muddy water circulating pipeline 7 is connected with the cutter head 1, the front section of the muddy water circulating pipeline 7 is located in the host system, the rear section of the muddy water circulating pipeline 7 is located in the trailer group, and pipelines for connecting the host with a mud pipe (the mud pipe is connected with the front section of the muddy water circulating pipeline 7 and the rear section of the muddy water circulating pipeline 7) matched with the host and fluid hydraulic pressure and the like are integrally arranged on the crane beam 2101. The muddy water circulating pipeline 7 can supply the tunneling liquid to the cutter head 1, and the muddy water circulating pipeline 7 can also discharge slurry generated by tunneling of the cutter head 1.

In this embodiment, the trailer includes an upper beam 22, a vertical column 23 and a bottom platform 24 connected in sequence from top to bottom, a marshalling train track 20 is integrally arranged on the bottom platform 24, a wheel pair 19 is arranged below the bottom platform 24, the wheel pair 19 is located on a trailer track 25, the trailer track 25 extends in the front-back direction, the trailer track 25 is fixed at the bottom of a segment tunnel 26, and two adjacent marshalling train tracks 20 are connected through a detachable short track.

The rear support system also includes a consist 17, the consist 17 being able to travel on both the trailer track 25 and the consist track 20. The two adjacent marshalling train tracks 20 are connected by adopting detachable short rails, so that the requirement of turning a tiny curve (namely, a small curvature) can be met. When the shield machine moves to a tiny curve special path, the offset distance of adjacent tracks is too large due to turning, the marshalling walking wheels cannot pass smoothly, and the detachable short track is installed to make up the gap, so that the marshalling train can run smoothly.

In the present embodiment, in the first trailer 13, the route center line of the consist train track 20 and the route center line of the trailer track 25 coincide in the vertical direction, that is, the distance between the two consist train tracks 20 is the same as the distance between the two trailer tracks 25, the distance between the two consist train tracks 20 and the center line of the segment tunnel 26 is the same, and the distance between the two trailer tracks 25 and the center line of the segment tunnel 26 is also the same. Both the consist track 20 and trailer track 25 are located below the centerline of the segment tunnel 26. The muddy water circulating pipe 7 (i.e., a part of the rear section of the muddy water circulating pipe 7) is integrally arranged on the upper cross member 22 of the first trailer 13, as shown in fig. 6.

In the present embodiment, in the rear trailer 15, the route center line of the consist train track 20 is parallel to the route center line of the trailer track 25, the route center line of the consist train track 20 is offset from the route center line of the trailer track 25 in the vertical direction, that is, the distance between the two consist train tracks 20 is the same as the distance between the two trailer tracks 25, the distances of the two consist train tracks 20 to the center line of the segment tunnel 26 are different, and the distances of the two trailer tracks 25 to the center line of the segment tunnel 26 are the same, as shown in fig. 7.

For example, the marshalling train track 20 is deviated to one side (for example, the left side) in the rear trailer 15, the distance from the marshalling train track 20 on the left side to the centerline of the segment tunnel 26 is greater than the distance from the marshalling train track 20 on the right side to the centerline of the segment tunnel 26, the marshalling train track 20 is located on one side (for example, the left side) of the column 23, the other side (for example, the right side) of the column 23 is provided with an equipment installation area, the equipment installation area is provided with the fluid hydraulic electric circulation equipment 14, the upper beam 22 is provided with the muddy water circulation pipe 7 (for example, a part of the rear section of the muddy water circulation pipe 7) and the pipeline 18, and the pipeline 18 is connected with the fluid hydraulic electric circulation equipment 14. The trailer, the marshalling train 17, the muddy water circulating pipe 7, the piping 18 and the fluid hydraulic electric circulation device 14 can be simultaneously present in the tube-in-tube tunnel 26, making the most of the space.

In the vertical direction, the marshalling train track 20 in the rear trailer 15 deviates from the center line of the segment tunnel 26, the marshalling train track 20 in the first trailer 13 is over against the center line of the segment tunnel 26, which is a dual requirement of material transportation and equipment arrangement in a narrow space, the marshalling track on the platform at the bottom of the trailer adopts a curved track-changing design, the marshalling train track 20 in the first trailer 13 is connected with the marshalling train track 20 in the adjacent rear trailer 15 through a track changer, when the marshalling train 17 enters the trailer (namely, the rear trailer 15), the marshalling train 17 deviates from the center line of the segment tunnel 26 in the vertical direction (which is a requirement of equipment arrangement, namely, the marshalling train track 20 is positioned at the left side of the upright column 23, the fluid hydraulic and electric equipment 14 can be arranged at the right side of the upright column 23, and space is fully utilized), and after the marshalling train 17 reaches the first trailer 13, in the vertical direction, the marshalling train 17 is located on the centerline of the segment tunnel 26 (note: to meet the requirement that the segment crane 21 will lift the segments at the center of the tunnel, the marshalling train 17 must be moved from a position offset from the centerline of the segment tunnel 26 to the centerline of the segment tunnel 26).

The marshalling train 17 can transport the duct pieces to the duct piece crane 21, the duct piece crane 21 hoists the duct pieces to the duct piece erector 10, the marshalling train 17 can run on the trailer track 25, and the marshalling train 17 can also run on the marshalling train track 20. Switches 16 are provided on the rearmost of the trailers, the switches 16 being capable of directing the consist 17 from the trailer track 25 into the consist track 20 of the trailer, and the switches 16 also being capable of directing the consist 17 from the consist track 20 into the trailer track 25 of the trailer.

For convenience of understanding and description, the absolute positional relationship is used in the present invention for expression, and unless otherwise specified, the azimuth word "up" indicates the upper direction in fig. 6, the azimuth word "down" indicates the lower direction in fig. 6, the azimuth word "left" indicates the left direction in fig. 6, the azimuth word "right" indicates the right direction in fig. 6, the azimuth word "front" indicates a direction perpendicular to the paper surface of fig. 6 and directed to the inside of the paper surface, and the azimuth word "rear" indicates a direction perpendicular to the paper surface of fig. 6 and directed to the outside of the paper surface. The present invention has been described in terms of the viewing angle of the reader or operator, but the above directional terms should not be construed or interpreted as limiting the scope of the present invention.

The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, so that the invention is intended to cover all modifications and equivalents of the embodiments described herein. In addition, the technical features and the technical schemes, and the technical schemes can be freely combined and used.