阅读说明：本技术 一种泥浆管延伸装置及其施工方法 (Slurry pipe extending device and construction method thereof ) 是由 郭沛霖 胡燕伟 宋德华 阴书玉 贾金建 张开 李明 于 2020-12-31 设计创作，主要内容包括：本发明公开了一种泥浆管延伸装置及其施工方法,解决了现有泥浆管延伸装置针对性强而通用性差的技术问题。本发明包括连接在拖车泥浆管与隧道泥浆管之间的伸缩管,通过伸缩管循环伸缩,便捷地在拖车泥浆管和隧道泥浆管之间增添延长管,伸缩管通过铰接机构与至少两个拖车同时俯仰铰接及横摆铰接,相邻的拖车之间铰接相连,实现泥浆管的上下转动和横向转动,满足盾构机的上下坡和转弯的需求。本发明结构紧凑、通用性较强,可适应不同直径系列的隧道,同时操作简便、自动化程度高,具有高效、人性化的隧道施工作业特点。单根伸缩管采用两端铰接的结构形式,施工时可同时适应盾构机上下坡及水平转弯的工况,满足了非直线隧道的掘进需求。(The invention discloses a mud pipe extending device and a construction method thereof, and solves the technical problems of strong pertinence and poor universality of the existing mud pipe extending device. The invention comprises a telescopic pipe connected between a trailer mud pipe and a tunnel mud pipe, wherein the telescopic pipe is circularly stretched, an extension pipe is conveniently added between the trailer mud pipe and the tunnel mud pipe, the telescopic pipe is simultaneously hinged in a pitching mode and a swinging mode with at least two trailers through a hinge mechanism, and the adjacent trailers are hinged and connected, so that the mud pipe can rotate up and down and transversely, and the requirements of up-going, down-going and turning of a shield machine are met. The invention has the advantages of compact structure, strong universality, simple and convenient operation, high automation degree and high-efficiency and humanized tunnel construction operation characteristics, and can be suitable for tunnels of different diameter series. The single telescopic pipe adopts a structural form with two hinged ends, can adapt to the working conditions of up-and-down slope and horizontal turning of the shield tunneling machine during construction, and meets the tunneling requirement of a non-linear tunnel.)

1. The utility model provides a mud pipe extension device, connects in advancing thick liquid system and arranging thick liquid system, its characterized in that: the tunnel mud pipe joint comprises a telescopic pipe (2) connected between a trailer mud pipe (5) and a tunnel mud pipe (6), wherein the telescopic pipe (2) is hinged with at least two trailers in pitch and yaw simultaneously through a hinge mechanism (4), and adjacent trailers are hinged and connected.

2. The mud pipe extension apparatus of claim 1, wherein: the hinge mechanism (4) comprises a connecting frame which is hinged with the telescopic pipe (2) in a pitching mode through a transverse hinge shaft (401), and the connecting frame is hinged with the trailer in a yawing mode through a vertical hinge shaft (402).

3. The mud pipe extension apparatus of claim 1 or 2, wherein: the articulated mechanism (4) is respectively arranged at two ends of the telescopic pipe (2), at least one articulated mechanism (4) is connected to the trailer through the driving mechanism (1), and the driving mechanism (1) drives the telescopic pipe (2) to extend or shorten through the articulated mechanism (4).

4. The mud pipe extension apparatus of claim 3, wherein: the telescopic pipe (2) is connected with the hinge mechanism (4) through the hinge pipe (3), the rear end of the hinge pipe (3) at the front end is connected with the front end of the telescopic pipe (2), the front end is connected with the trailer mud pipe (5) through an expansion joint (8), the front end of the other hinge pipe (3) is connected with the rear end of the telescopic pipe (2), and the rear end is connected with the tunnel mud pipe (6) through the expansion joint (8).

5. The mud pipe extension apparatus of claim 4, wherein: the driving mechanism (1) comprises a driving trolley (104) connected with the hinge mechanism (4), a guide rail (105) of the driving trolley (104) is arranged on the trailer, and the driving trolley (104) moves along the axial direction of the trailer through a transmission chain driving unit or a transmission belt driving unit or a hydraulic cylinder driving unit or an electric telescopic rod driving unit.

6. The mud pipe extension apparatus of claim 5, wherein: the driving chain driving unit comprises a motor (101) arranged on the trailer, the motor (101) is connected with a driving chain wheel through a speed reducer (102), a driven chain wheel is arranged opposite to the driving chain wheel, a driving chain (103) is arranged between the driving chain wheel and the driven chain wheel, and a driving trolley (104) is connected with the driving chain (103).

7. The mud pipe extension apparatus as claimed in any one of claims 1-2, 4-6, wherein: the telescopic pipe (2) comprises an outer cylinder section (201) and an inner cylinder section (202) which is in penetrating fit with the outer cylinder section (201), and a seal (203) and a seal pressing ring (204) are arranged between the inner cylinder section (202) and the outer cylinder section (201).

8. The mud pipe extension apparatus of claim 7, wherein: in the slurry inlet system, an outer cylinder section (201) of a telescopic pipe (2) is positioned at one side close to the tunneling direction; in the slurry discharge system, an outer cylinder section (201) of a telescopic pipe (2) is positioned on one side departing from the tunneling direction.

9. The mud pipe extension apparatus as claimed in any one of claims 1-2, 4-6, 8, wherein: the slurry feeding system and the slurry discharging system are arranged on the same side of the trailer, a telescopic pipe (2) of the slurry feeding system is arranged below the top of the trailer, and a telescopic pipe (2) of the slurry discharging system is arranged above the bottom of the trailer.

10. The method of constructing a mud pipe extension apparatus of claim 9, comprising a shield tunneling machine driving state and a mud pipe extension state:

the shield tunneling machine is in a tunneling state: the driving mechanism (1) does not provide power, the driving trolley (104) and the hinged pipe (3) connected with the driving trolley are static relative to the inner wall of the tunnel, and the driving trolley (104) and the hinged pipe (3) connected with the driving trolley move relative to the trailer, so that the telescopic pipe (2) is gradually elongated;

extension state of the mud pipe: when the telescopic pipe (2) reaches a full-stroke state, stopping tunneling by the shield tunneling machine, disconnecting the tunnel slurry pipe (6) from the telescopic pipe (2), providing power by the driving mechanism (1), driving the articulated pipe (3) connected with the driving trolley (104) to move to gradually recover the telescopic pipe (2), and then installing the extension pipe (7) on the inner wall of the tunnel to connect the extension pipe (7) between the tunnel slurry pipe (6) and the telescopic pipe (2);

and the tunneling state of the shield tunneling machine and the extension state of the slurry pipe are sequentially and circularly reciprocated until the tunneling is finished.

Technical Field

The invention relates to the technical field of slurry pipeline extension for slurry shield, in particular to a slurry pipe extension device and a construction method thereof.

Background

The shield tunnel construction plays an increasingly wide role in traffic, water conservancy, electric power and municipal construction, and is developing towards the direction of safety, high efficiency and high reliability along with the progress of the times.

The slurry shield machine is used as a shield tunnel construction device, and the slurry pipe extension device is an indispensable system. At present, a common mud pipe extension device is a hose with a certain length reserved at the top of a trailer, and the requirement that a mud pipeline moves forwards when a shield tunneling machine tunnels is met. When the pipeline needs to be extended, the pipeline extension operation is completed by moving the walking frame. For example, the invention patent with application number of 2019.12.20 and application number of CN201911325989.2 discloses a slurry pipeline extension device and an extension method for a slurry shield, which comprise a slurry hard pipe of the shield machine, a slurry hose, a walking frame slurry hard pipe and a tunnel slurry hard pipe which are sequentially connected, wherein the walking frame slurry hard pipe is movably arranged on a trailer through a walking mechanism, the slurry hose is movably arranged on the trailer through a sliding part, and the trailer is also provided with a slurry pipe crane for hoisting the slurry hard pipe.

However, the device disclosed in the above patent not only occupies a large space, is limited by the diameter of the tunnel, is difficult to be used in a tunnel with a small diameter, and has poor versatility, but also cannot meet the requirements of different shield machines for going up and down slopes and turning of different construction projects. In addition, the invention patent with application date of 2018.02.01 and application number of CN201810102628.0 discloses a novel pipeline extension device, which comprises a sleeve and an extension pipe, wherein the sleeve is connected with a fixed part of a slurry pipe, and the sleeve is connected with an additionally arranged slurry pipe flange; one end of the telescopic pipe is sleeved in the sleeve, and the telescopic pipe is connected with the sleeve in a sliding manner. However, the patent only discloses a slurry extension pipe, does not provide the assembly relation and the construction method of the slurry extension device during tunnel excavation, cannot meet the requirements of up-down slope and turning of the shield machine, and can only meet the use requirement of the shield machine for straight line excavation.

Disclosure of Invention

Aiming at the defects in the background art, the invention provides a mud pipe extending device and a construction method thereof, and solves the technical problems of strong pertinence and poor universality of the existing mud pipe extending device.

The technical scheme of the invention is realized as follows: the utility model provides a mud pipe extension device, connect in advancing thick liquid system and row's thick liquid system, including connecting the flexible pipe between trailer mud pipe and tunnel mud pipe, flexible through flexible pipe circulation, add the extension pipe between trailer mud pipe and tunnel mud pipe conveniently, flexible pipe passes through hinge mechanism and two at least trailers simultaneously every single move articulated and the yaw is articulated, it links to each other to articulate between the adjacent trailer, realize the tilting and the transverse rotation of mud pipe, satisfy the requirement of the last downhill path and the turn of shield structure machine.

The articulated mechanism comprises a connecting frame which is articulated with the telescopic pipe in a pitching way through a transverse articulated shaft, the connecting frame is articulated with the trailer in a yawing way through a vertical articulated shaft, the pitching rotation and the yawing rotation are not influenced mutually, and the yawing and pitching motions are realized simultaneously.

Further, hinge mechanisms are respectively arranged at two ends of the telescopic pipe, at least one hinge mechanism is connected to the trailer through a driving mechanism, the driving mechanism drives the telescopic pipe to extend or shorten through the hinge mechanisms, and the extension and the shortening of the telescopic pipe are conveniently realized through the driving mechanism.

Furthermore, the telescopic pipe is connected with the hinge mechanism through the hinge pipe, the rear end of the hinge pipe at the front end is connected with the front end of the telescopic pipe, the front end of the hinge pipe at the front end is connected with the trailer mud pipe through an expansion joint, the front end of the other hinge pipe is connected with the rear end of the telescopic pipe, and the rear end of the other hinge pipe is connected with the tunnel mud pipe through an expansion joint.

The driving mechanism comprises a driving trolley connected with the hinge mechanism, a guide rail for driving the driving trolley is arranged on the trailer, and the driving trolley moves along the axial direction of the trailer through a transmission chain driving unit or a transmission belt driving unit or a hydraulic cylinder driving unit or an electric telescopic rod driving unit.

Further, the driving chain driving unit comprises a motor arranged on the trailer, the motor is connected with a driving chain wheel through a speed reducer, a driven chain wheel is arranged opposite to the driving chain wheel, a driving chain is arranged between the driving chain wheel and the driven chain wheel, and the driving trolley is connected with the driving chain.

The telescopic pipe comprises an outer cylinder section and an inner cylinder section which is in alternate fit with the outer cylinder section, and a sealing and sealing pressure ring is arranged between the inner cylinder section and the outer cylinder section.

Furthermore, in the slurry inlet system, the outer cylinder section of the telescopic pipe is positioned at one side close to the tunneling direction; in the slurry discharge system, the outer cylinder section of the telescopic pipe is positioned on one side deviating from the tunneling direction, so that the flow resistance of fluid can be effectively reduced.

Further, advance thick liquid system and arrange thick liquid system setting in the same one side of trailer, advance the flexible pipe setting of thick liquid system in the below at the top of trailer, arrange the flexible pipe setting of thick liquid system in the top of trailer bottom for whole device compact structure saves the usage space in the trailer.

A construction method of a mud pipe extension device comprises a shield tunneling machine excavation state and a mud pipe extension state:

(1) the shield tunneling machine is in a tunneling state: the driving mechanism does not provide power, the driving trolley and the hinged pipe connected with the driving trolley are static relative to the inner wall of the tunnel, and the driving trolley and the hinged pipe connected with the driving trolley move relative to the trailer, so that the telescopic pipe is gradually elongated.

(2) Extension state of the mud pipe: when the telescopic pipe reaches a full-stroke state, stopping tunneling by the shield tunneling machine, disconnecting the tunnel slurry pipe from the telescopic pipe, providing power by a driving mechanism, driving the trolley to drive the hinged pipe connected with the trolley to move, gradually recovering the telescopic pipe, and then installing an extension pipe on the inner wall of the tunnel to connect the extension pipe between the tunnel slurry pipe and the telescopic pipe;

(3) and the tunneling state of the shield tunneling machine and the extension state of the slurry pipe are sequentially and circularly reciprocated until the tunneling is finished.

The invention has the beneficial effects that:

1. the mud pipe extending device has the advantages of compact structure, strong universality, suitability for tunnels of different diameter series, simple and convenient operation, high automation degree and high-efficiency and humanized tunnel construction operation characteristics.

2. The single telescopic pipe adopts a structural form with two hinged ends, can adapt to the working conditions of up-and-down slope and horizontal turning of the shield tunneling machine during construction, and meets the tunneling requirement of a non-linear tunnel.

Drawings

In order to illustrate the embodiments of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the invention, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.

FIG. 1 (a) is a perspective view showing an extended state of the mud pipe,

wherein (b) and (c) are enlarged partial views in (a);

FIG. 2 is a perspective view of the telescopic tube in a full stroke state;

FIG. 3 is a plan view (d) showing the extension state of the mud pipe,

wherein (e) and (f) are enlarged partial views in (d);

FIG. 4 is a plan view of the telescopic tube in a full stroke state;

FIG. 5 (g) is a cross-sectional view taken along the plane A-A in FIG. 4,

wherein (h) is a partial magnified view of (g);

FIG. 6 (i) is a cross-sectional view taken along the plane B-B in FIG. 4,

wherein (j) is a partial magnified view in (i);

FIG. 7 is a cross-sectional view taken along plane C-C of FIG. 4;

FIG. 8 is a partial top view of FIG. 3;

wherein: 1-driving mechanism, 101-motor, 102-speed reducer, 103-transmission chain, 104-driving trolley, 105-guide rail;

2-an extension tube, 201-an outer cylinder section, 202-an inner cylinder section, 203-a seal, 204-a seal compression ring;

3-hinged pipe;

4-hinge mechanism, 401-transverse hinge axis, 402-vertical hinge axis;

5-trailer slurry pipe;

6-tunnel mud pipe;

7-an extension tube;

8-an expansion joint;

9-trailer one;

and 10-trailer II.

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 obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

In embodiment 1, when the slurry shield machine is used, the slurry shield machine includes an upper set of slurry pipe extension device and a lower set of slurry pipe extension device which are the same and respectively correspond to a slurry inlet system and a slurry discharge system, and one of the extension devices is taken as an example for explanation below, and a rectangular coordinate system as shown in fig. 1 is established at the same time, and the negative direction of the z axis is the same as the tunneling direction of the tunnel.

The mud pipe extension device consists of the following modules: actuating mechanism 1, flexible pipe 2, articulated pipe 3, articulated mechanism 4, trailer mud pipe 5, tunnel mud pipe 6, extension pipe 7, expansion joint 8, trailer 9, two 10 of trailer, trailer 9 and two 10 articulated each other of trailer, provide fixed platform for whole mud pipe extension device. In addition, during the tunneling process, working conditions of upward slope, downward slope and horizontal turning are frequently encountered, as shown in fig. 4, α is defined as an included angle between the telescopic pipe 2 and the tunnel axis when the shield machine moves upward slope and downward slope, as shown in fig. 8, and β is an included angle between the telescopic pipe 2 and the tunnel axis when the shield machine horizontally turns.

The driving mechanism 1, as shown in fig. 3-7, includes a driving trolley 104 and a guide rail 105, and in this embodiment, the power source includes a motor 101, a speed reducer 102 and a transmission chain 103. Two ends of the driving trolley 104 are connected with the transmission chain 103, and the motor 101 enables the driving trolley 104 to reciprocate on the guide rail 105 through the speed reducer 102 and the transmission chain 103 in sequence. In this embodiment, the guide rail 105 is composed of two channel steels, and the driving carriage 104 is slidably disposed in the two channel steels. Or a motor is used for driving the driving trolley 104 to reciprocate by driving transmission through a speed reducer; or the hydraulic cylinder driven by the hydraulic system drives the driving trolley 104 to reciprocate; or the electric telescopic rod drives the driving trolley 104 to reciprocate.

The extension tube 2 comprises an outer cylinder section 201, an inner cylinder section 202, a seal 203 and a seal press ring 204. 202 the inner cylinder section 202 can reciprocate in the outer cylinder section 201, and the seal 203 and the seal press ring 204 play a role in sealing and bearing between the inner cylinder section 202 and the outer cylinder section 201. In order to reduce the fluid flow resistance, slurry generally flows from the inner cylinder section 202 to the outer cylinder section 201, so the extension pipe 2 needs to be installed in a reversed mode in a slurry inlet system and a slurry outlet system. In the slurry inlet system, the outer cylinder section 201 of the extension tube 2 is positioned at one side close to the tunneling direction; in the slurry discharge system, the outer joint 201 of the telescopic tube 2 is located on the side facing away from the heading direction.

One end of the hinged pipe 3 is fixedly connected with the expansion joint 8, and the other end is fixedly connected with the outer cylinder section 201 or the inner cylinder section 202 of the telescopic pipe 2. Specifically, the contracted pipe 2 is connected with the hinge mechanism 4 through the hinge pipe 3, the rear end of the hinge pipe 3 at the front end is connected with the front end of the telescopic pipe 2, the front end is connected with the trailer mud pipe 5 through the expansion joint 8, the front end of the other hinge pipe 3 is connected with the rear end of the telescopic pipe 2, and the rear end is connected with the tunnel mud pipe 6 through the expansion joint 8.

The hinge mechanism 4 comprises a connecting frame which is hinged with the telescopic pipe 2 in a pitching mode through a transverse hinge shaft 401, and the connecting frame is hinged with the trailer in a yawing mode through a vertical hinge shaft 402. The transverse hinge axes 401 are provided in two, coaxial with each other and parallel to the x-axis, and the vertical hinge axes 402 are parallel to the y-axis. The transverse hinge shafts 401 and the vertical hinge shafts 402 are hinged to the hinge tube 3 such that the hinge tube 3 has rotational freedom about both the x-axis and the y-axis, as shown in fig. 1. The degrees of freedom about the x-axis may be adapted to the angle alpha and the degrees of freedom about the y-axis may be adapted to the angle beta, as shown in fig. 4 and 8.

The trailer mud pipe 5 is fixed on the trailer I9 and continuously moves towards the tunneling direction along with the tunneling of the shield tunneling machine; the tunnel mud pipe 6 is fixed on the inner wall of the tunnel and needs to be lengthened and extended continuously along with the continuous tunneling of the tunnel; the extension pipe 7 is used for continuously lengthening and extending the tunnel mud pipe 6; the expansion joint 8 is a flexible connecting piece and has certain deformability, one end of the expansion joint is fixedly connected with the hinged pipe 3, the other end of the expansion joint is fixedly connected with the trailer mud pipe 5 or the tunnel mud pipe 6, and the expansion joint can adapt to angular displacement generated by the hinged pipe 3 through deformation.

Embodiment 2, a construction method of a mud pipe extension apparatus, including a shield tunneling machine excavation state and a mud pipe extension state:

(1) the shield tunneling machine is in a tunneling state: the driving mechanism 1 does not provide power, the driving trolley 104 and the articulated pipe 3 connected with the driving trolley are static relative to the inner wall of the tunnel, but the driving trolley 104 and the articulated pipe 3 connected with the driving trolley move in the positive direction of the z axis relative to the first trailer 9 and the second trailer. At the same time, the inner cylinder section 202 of the telescopic tube 2 is gradually pulled out with respect to the outer cylinder section 201.

(2) Extension state of the mud pipe: when the inner cylinder section 202 in the extension tube 2 reaches a full stroke state relative to the outer cylinder section 201, as shown in fig. 2 and 4, the shield tunneling machine needs to stop tunneling. The tunnel mud pipe 6 is disconnected, the driving mechanism 1 provides power, the driving trolley 104 drives the hinged pipe 3 connected with the driving trolley to move towards the negative direction of the z axis, and the inner cylinder section 202 in the extension pipe 2 is gradually recovered relative to the outer cylinder section 201 until the initial state is reached. As shown in fig. 1 and 3. At this time, an extension pipe 7 is installed on the inner wall of the tunnel so as to be connected to the tunnel slurry pipe 6.

(3) The operation is repeated in a circulating way until the shield tunneling machine finishes tunneling work.

Nothing in this specification is intended to be exhaustive of all conventional and well known techniques.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.