CN211648165U

CN211648165U - Shield device and system

Info

Publication number: CN211648165U
Application number: CN201921230889.7U
Authority: CN
Inventors: 郝百顺
Original assignee: Individual
Current assignee: Inner Mongolia Shunyuan Liangchuan Pipeline Engineering Technology Co ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-10-09
Anticipated expiration: 2029-07-31

Abstract

The embodiment of the utility model provides a shield constructs device and system. The embodiment of the utility model provides a shield structure device includes: a second body having an inner space, the inner space having at least an opening facing a heading direction, an outer peripheral surface of the second body having a first external thread, an axis of the second body being coaxial with the central axis; a first body disposed in the interior space, the second body being rotatable about the central axis relative to the first body; the first cutter disc is connected to the first main body, arranged at the opening and faces the tunneling direction, and can rotate around the central axis relative to the first main body. The embodiment of the utility model provides a shield constructs device can carry out the tunnelling fast, and construction speed is fast, and equipment is simple.

Description

Shield device and system

Technical Field

The utility model relates to a pipe network construction technical field especially relates to a shield constructs device and system in the underground.

Background

The shield machine is a special engineering machine in tunnel excavation, pipeline construction and the like, and constructs a shield body for supporting a pit wall while excavating an underground tunnel or a pipeline, thereby realizing one-step molding of the tunnel or the pipeline.

The traditional shield device adopting hydraulic jacking pipes is low in construction speed, high in construction cost and incapable of conducting long-distance continuous construction, equipment required for jacking pipes is complex, besides tunneling equipment, high-power jacking hydraulic equipment is required, a starting well is also required to be prefabricated and cast with a rear seat wall of a strong-resistance structure, equipment installation is long in time consumption, technical requirements are high, construction difficulty of a pebble zone is high, even jacking pipes fail, and the device cannot be applied to large-area construction of urban pipe network transformation and pipe gallery construction.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a shield constructs device and system, the construction speed is fast, and equipment is simple.

In a first aspect, the embodiment of the utility model provides a shield constructs device has the axis, and the one end orientation of axis is for tunnelling the direction, and shield constructs the device and includes: a second body having an inner space, the inner space having at least an opening facing a heading direction, an outer peripheral surface of the second body having a first external thread, an axis of the second body being coaxial with the central axis; a first body disposed in the interior space, the second body being rotatable about the central axis relative to the first body; the first cutter disc is connected to the first main body, arranged at the opening and faces the tunneling direction, and can rotate around the central axis relative to the first main body.

According to an aspect of the embodiments of the present invention, the first cutter head has a rotation direction opposite to that of the second body.

According to an aspect of the embodiment of the utility model, the shield constructs the device and still includes first drive arrangement, and first blade disc and the rotation of second main part are driven simultaneously to the alternative.

According to the utility model discloses an aspect, the shield constructs the device and still includes the drive wheel, and the drive wheel setting is at the peripheral surface of second main part, and the drive wheel drives the second main part and rotates.

According to an aspect of the embodiments of the present invention, the shield structure device further includes a second cutter head rotatable about a self rotation axis and at least partially radially protruding from an outer peripheral surface of the second body in a rotated state.

According to an aspect of the embodiment of the present invention, the first driving device selectively drives the first cutter head, the second main body, and the second cutter head to rotate simultaneously.

According to an aspect of the embodiment of the utility model, scalable connection between first blade disc and the first main part, first blade disc can keep away from first main part and stretch out to and can retract towards first main part.

According to the utility model discloses an aspect, the shield constructs the device and still includes the percussion device, connects in first main part to set up to provide the impact along first external screw thread precession direction to the second main part.

In a second aspect, an embodiment of the present invention provides a shield system, including the shield device of any of the above embodiments, the shield system further includes an extension portion, one end of one of the extension portions in the length direction is connected to an end of the second main body facing away from the heading direction, and the extension portion rotates around the central axis at least partially together with the second main body.

According to an aspect of the embodiments of the present invention, the outer peripheral surface of the extension portion has a second external thread, and the second external thread is the same as the pitch and the direction of rotation of the first external thread.

According to the utility model discloses an aspect, the shield constructs the system and still includes the slip casting device, sets up along the peripheral surface of shield structure system to can provide the fluid between the peripheral surface of shield structure system and the tunnel inner wall that the shield constructs the system and locates.

According to the utility model discloses shield constructs device has the external screw thread through first blade disc and the rotation of second main part and second main part, can tunnel fast, and construction speed is fast, and equipment is simple.

Drawings

Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.

Fig. 1 shows a schematic view of a radial section structure of a shield device according to an embodiment of the present invention;

fig. 2 shows a schematic view of the transmission relationship of a shield apparatus according to an embodiment of the present invention;

fig. 3 shows a schematic cross-sectional structure of a shield device according to another embodiment of the present invention;

fig. 4 shows a schematic structural diagram of a shield system according to an embodiment of the present invention.

Description of reference numerals:

1-a first body;

2-a first cutter head;

3-a second body; 31-a first external thread;

4-a first drive;

5-a second cutter head;

6-an extension; 61-a second external thread;

7-impact device.

Detailed Description

The features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention.

It is noted that, herein, 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, 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, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, article, or apparatus that comprises the element.

It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.

Fig. 1 shows a schematic view of a radial tangent plane structure of a shield device according to an embodiment of the present invention. Referring to fig. 1, an embodiment of the present invention provides a shield device, which has a central axis and a heading direction M toward one end of the central axis. The embodiment of the utility model provides a shield structure device includes: a first body 1, a first blade disc 2 and a second body 3.

The second body 3 has an inner space having at least an opening facing the heading direction M, the outer circumferential surface of the second body 3 has a first external thread 31, and the axis of the second body 3 is coaxial with the central axis. The corresponding axis of the first external thread 31 is coaxial with the central axis. The second body 3 may be a revolution-like structure, e.g. cylindrical, rotating along a central axis. Alternatively, the second body 3 may also be a polygonal columnar structure. The diameters of the two ends of the second body 3 along the central axis may be equal. Alternatively, the diameters of both ends of the second body 3 along the central axis may gradually increase from one end to the other end. In one embodiment, the inner space of the second body 3 may be open at both ends in the axial direction, i.e. the second body 3 is substantially cylindrical. In another embodiment the inner space of the second body 3 is open only towards one end, i.e. only towards the direction of tunnelling M, i.e. the second body 3 is substantially cup-shaped. The outer diameter of the first male screw 31 of the outer peripheral surface of the second body 3 protrudes from the outer peripheral surface of the second body 3. The pitch of the first external thread 31 may be selected differently for the soil of the excavated earth.

The first body 1 is disposed in an inner space of the second body 3, and the second body 3 is rotatable about a central axis with respect to the first body 1. The first body 1 and the second body 3 may be movably connected, i.e. the second body 3 may be rotatably connected to the first body 1. In one embodiment, the first body 1 may provide radial support for the second body 3. In another embodiment, the first body 1 may provide an axial stop for the second body 3. In another alternative embodiment, sliding means are axially provided between the first body 1 and the second body 3, so that the second body 3 is axially movable with respect to the first body 1. The first body 1 may not be limited to a specific shape.

The first cutter head 2 is connected to the first body 1, is arranged at an opening of the inner space of the second body 3 and faces the tunneling direction M, and the first cutter head 2 can rotate around a central axis relative to the first body 1. The first cutter head 2 may be disc-shaped. The surface of the first cutter head 2 facing the direction of excavation M may be provided with cutters to cut the excavated surface. The first cutterhead 2 may also be of a non-standard shape, for example a disc with a notch. In one embodiment, the first cutterhead 2 may protrude with respect to the second body 3, i.e. the first cutterhead 2 exceeds the second body 3 in the direction of tunnelling M. In another embodiment, the first cutterhead 2 is located within the interior space of the second body 3, i.e. the first cutterhead 2 does not exceed the second body 3 in the direction of the excavation M. In some embodiments, the first blade 2 is telescopically connected to the first body 1, the first blade 2 being extendable away from the first body 1 and retractable towards the first body 1. The first cutter head 2 and the first main body 1 are controlled to extend and retract. That is, the first blade tray 2 is movable by the drive mechanism between the first position and the second position with respect to the first body 1 under the control operation, and can perform the stable operation at the first position, the second position, or the fixed point between the first position and the second position. The first cutter disc 2 is telescopically movable in the inner space of the second body 3. The first blade disc 2 is also telescopically movable between inside and outside the inner space of the second body 3.

According to the utility model discloses shield constructs device receives through the rotatory cutting of first blade disc 2 and digs the surface to 3 rotations of second main part and obtain forward thrust through the external screw thread and receive in order digging into and dig the surface, can not adopt the jacking mechanism, can tunnel fast, and construction speed is fast, the mechanical structure of equipment is simple. According to the utility model discloses shield structure device adopts rotatory tunnelling, and the tunnel of digging out is circular, and to a great extent has improved the stability of the tunnel department soil body.

Fig. 2 shows a schematic diagram of a transmission relationship of a shield apparatus according to an embodiment of the present invention, and a dotted line portion is a first cutter head 2. Referring to fig. 2, in some embodiments, the first cutter head 2 rotates in a direction opposite to that of the second body 3. The first cutter head 2 and the second main body 3 are opposite in rotation direction, and torque support of respective required rotation force can be obtained by utilizing respective rotation reaction force. In some embodiments, the shield apparatus further comprises a first drive means 4 for selectively driving the first cutterhead 2 and the second body 3 in rotation simultaneously. The first drive means 4 is able to simultaneously drive the first cutterhead 2 and the second main body 3 in opposite directions. The first driving device 4 may be connected to the first body 1. It is preferable that the first driving means 4 is fixedly and stably connected to the first body 1 to stably provide the driving force. The first driving device 4 can drive the first cutter disc 2 and the second main body 3 respectively, and the first cutter disc 2 and the second main body 3 can rotate simultaneously. The first cutter head 2 and the second main body 3 have different rotation speeds. Alternatively, the simultaneous rotation of the first cutter head 2 and the second body 3 is achieved, for example, by control means manipulation. The first drive means 4 can also drive the first cutter head 2 and the second body 3 simultaneously with one power input via an intermediate connection. The intermediate connection may be a gear set. The gear set can adjust the rotation speed of the first cutter head 2 and the second main body 3 by adjusting the gear ratio. The intermediate coupling mechanism may also include a clutch device to selectively disengage the power input to the first cutter disc 2 or the second body 3 to effect individual rotation of the first cutter disc 2 or the second body 3 under certain circumstances. In one embodiment, the intermediate coupling mechanism may include both a clutch device and a transmission to more flexibly control the rotational movement of the first cutter disc 2 and the second body 3.

In some embodiments, the shield apparatus further includes a driving wheel disposed at an outer circumferential surface of the second body 3, the driving wheel driving the second body 3 to rotate. The number of the driving wheels can be multiple, and the multiple driving wheels are arranged at intervals. The second body 3 obtains a rotational torque by the rotation of the driving wheel, the rotational direction of which coincides with the screwing direction of the first male screw 31. The position and arrangement of the drive wheel does not affect the overall shape of the first external thread 31. In some embodiments, the drive wheel is arranged on the second body 3 by means of a telescopic support device, which is able to correct the deflection of the shield arrangement. In some alternative embodiments, the second body 3 may be driven to rotate only by the drive wheels. In other alternative embodiments, the first drive means 4 and the drive wheel jointly drive the second body 3 in rotation. It will be appreciated that the second body 3 may also be driven in rotation by the first drive means 4 only.

Fig. 3 shows a schematic cross-sectional structure diagram of a shield device according to another embodiment of the present invention. Referring to fig. 3, in some embodiments, the shield tunneling apparatus of the present invention further includes a second cutter head 5, wherein the second cutter head 5 is rotatable around its rotation axis and at least partially protrudes radially from the outer circumferential surface of the second body 3 in a rotating state. The cutter head of the second cutter head 5 acts on the inner wall of the tunnel. The second cutter head 5 is used for engraving threads which are substantially matched with the first external threads 31 on the wall surface of the tunnel where the shield device is located so as to facilitate the subsequent thread part to be screwed in. The second cutter disc 5 may be disc-shaped. The circumferential extension of the second cutter head 5 is provided with cutters or cutter teeth to act on the wall surface of the tunnel. The portion of the second cutter disc 5 that exceeds the outer peripheral surface of the second main body 3 may be flush with the height of the first external thread 31 or slightly exceed the height of the first external thread 31. It will be appreciated that the second cutter head 5 may also be of other design that can be threaded, for example a disc with a notch. In some embodiments, the first drive means 4 selectively drives the first impeller 2, the second body 3 and the second impeller 5 in rotation simultaneously. The first driving device 4 can drive the first cutter disc 2 and the second main body 3 selectively and drive the second cutter disc 5 to rotate. The first cutter disc 2, the second body 3 and the second cutter disc 5 can be rotated simultaneously. The direction of rotation of the second cutter disc 5 may be the same as the direction of rotation of the first cutter disc 2 or the second body 3. The first drive means 4 may effect simultaneous rotation of the first cutter disc 2, the second body 3 and the second cutter disc 5 by means of an intermediate connection, such as a gear train.

In some embodiments, the shield device of the present invention further comprises an impact device 7 connected to the first body 1 and configured to provide an impact to the second body 3 along the screwing direction of the first external thread 31. The impact force of the impact device 7 assists the shield device in heading in the heading direction. The impact device 7 may also be arranged to provide radial impact to the second body 3. The impact device 7 provides radial impacts to the second body 3 so that the inner wall of the tunnel formed becomes more compact and more perfectly rounded. The impact device 7 may be an impact motor.

According to the utility model discloses shield constructs device receives through the rotatory cutting of first blade disc 2 and digs the surface, and second blade disc 5 cuts out the dimpled grain of identical first external screw thread 31 at circular tunnel inner wall to second main part 3 is rotatory and obtains forward thrust through the external screw thread and receive in order digging into and dig the surface, can not adopt the jacking mechanism, can tunnel fast, and construction speed is fast, the mechanical structure of equipment is simple. Further, according to the utility model discloses shield structure device can rotatory tunnelling, and the tunnel of digging out is the circular tunnel that has the dimpled grain, and the arch of dimpled grain and 3 rotatory while in the impact vibration effect of impact device 7 tunnel inner wall form ideal circular, are favorable to the stability in tunnel.

Fig. 4 shows a schematic structural diagram of a shield system according to an embodiment of the present invention. Referring to fig. 4, the shield system according to the embodiment of the present invention includes the shield device provided in any of the above embodiments, and the shield system further includes an extension portion 6, wherein one end of one of the extension portions 6 in the length direction is connected to one end of the second main body 3 away from the heading direction M, and the extension portion 6 rotates around the central axis at least partially together with the second main body 3. The plurality of extensions 6 may be integrally formed by being connected end to end in the length direction. One end in the length direction of the end one extension 6 of the plurality of extensions 6 may be connected to an end of the second body 3 facing away from the heading direction M. The extensions 6 may bear in the radial direction. The utility model discloses shield constructs in the system tunnelling operation process extension 6 and plays the effect fixed and support to the tunnel wall. The outer diameter of the extension 6 may be substantially identical to the outer diameter of the second body 3, facilitating the obtaining of continuous stable pressure conditions for the tunnel inner wall. The extension 6 may be curved in the length direction. In one embodiment, the extension 6 may extend into a portion of the second body 3. In this embodiment, the central axis may be a partially curved centerline. In some embodiments, the outer peripheral surface of the extension 6 has a second external thread 61, the second external thread 61 having the same pitch and direction of rotation as the first external thread 31. The outer diameter of the second external thread 61 may be substantially the same as the outer diameter of the first external thread 31, so that the shield device of the embodiment of the present invention smoothly screws the extension portion 6 into the tunnel during the tunneling process. The extension 6 may preferably be a PE (polyethylene) steel band reinforced threaded pipe. The PE steel band reinforced threaded pipe has the advantages of acid and alkali resistance, corrosion resistance, good anti-seepage and anti-leakage performance and low cost. It will be appreciated that the extension 6 may also be a metal pipe, a concrete pipe, etc. In some embodiments, extension drive means are provided at intervals lengthwise within the extension 6 to drive the extension 6 to rotate. For example, the extension portion 6 is driven to rotate by providing a rotation driving motor.

It will be appreciated that after construction of a section of tunnel by the shield system, at least part of the extension 6 remains disposed within the section of tunnel to continue to support the inner wall of the tunnel, with the extension 6 now becoming a tunnel lining (or conduit) as part of the tunnel.

The tunnel herein may be a tunnel for various purposes, such as a traffic tunnel, a hydraulic tunnel, a municipal tunnel, a mine tunnel. Preferably, in the embodiments herein, the tunnel refers to a municipal tunnel of a municipal underground pipe network.

In some embodiments, the shield system of the embodiment of the present invention further includes a grouting device disposed along the outer peripheral surface of the shield system, and the fluid can be provided between the outer peripheral surface of the shield system and the inner wall of the tunnel where the shield system is located. The fluid may be a slurry, preferably a thixotropic slurry. The grouting device comprises grouting holes arranged along the peripheral surface of the shield system. The grouting holes inject slurry with certain pressure between the peripheral surface of the shield system and the inner wall of the tunnel where the shield system is located, so that a slurry sheath beneficial to the stability of the inner wall is formed on the inner wall of the tunnel, and meanwhile, drag reduction slurry capable of reducing friction between the second main body 3 of the shield system and a soil body on the inner wall of the tunnel is formed. The grouting means comprise a first grouting means at the second body 3 and a second grouting means at the extension 6. The second grouting device can provide slurry between the outer peripheral surface of the extension part 6 and the wall surface of the tunnel, so that the friction force at the extension part 6 is reduced, the soil pressure unbalance caused by reducing the diameter is supplemented, the extension part 6 is screwed in more easily, conditions are created for long-distance continuous construction, and the collapse hole of the inner wall of the tunnel caused by the soil pressure unbalance is avoided. The slip casting device injects mud to cooperate the rotation of second main part 3 and extension 6, can show the sheath lubricating function who improves mud.

In some embodiments, the shield system of the present invention further includes a slag discharge passage. The tapping channel may be connected to the first body 1 and substantially non-rotating. The slag discharge passage may extend in a length direction inside the extension 6 from the first body 1 to carry out the slag pieces cut by the first cutter head 2 to the outside environment.

According to the utility model discloses shield constructs system receives through the rotatory cutting of first blade disc 2 and digs the surface to 3 rotations of second main part and obtain forward thrust through the external screw thread and receive in order digging into and dig the surface, can not adopt the jacking mechanism, can tunnel fast, and construction speed is fast, the mechanical structure of equipment is simple. According to the utility model discloses shield structure system adopts rotatory tunnelling, and the tunnel of digging out is circular for roughly, and to a great extent has improved the stability of the tunnel department soil body.

Further, according to the utility model discloses shield structure system is particularly suitable for city municipal pipe network construction transformation construction to need not carry out large-scale excavation to ground, kept original road surface appearance and surface, practice thrift the cost and do not influence ground facility and application, effectively solve the contradiction between city pipe network construction and the above-ground attachment, stop to draw the lock way.

Further, according to the utility model discloses shield structure system adopts PE steel band reinforcing screwed pipe, can be applied to in city municipal pipe network construction transformation shield structure method construction with PE steel band reinforcing screwed pipe.

It should be understood that the description herein of specific embodiments of the invention is exemplary and should not be construed as an undue limitation on the scope of the invention. The scope of the invention is defined by the claims appended hereto, and encompasses all embodiments falling within its scope and obvious equivalents thereof.

Claims

1. A shield device having a central axis, one end of which faces in a direction of driving (M), comprising:

a second body (3) having an inner space with at least an opening facing the heading direction (M), the second body (3) having an outer peripheral surface with a first external thread (31), the second body (3) having an axis coaxial with the central axis;

a first body (1), the first body (1) being arranged in the inner space, the second body (3) being rotatable relative to the first body (1) about the centre axis;

first blade disc (2), connect in first main part (1), and set up the opening part and orientation tunnelling direction (M), first blade disc (2) can for first main part (1) is around the axis is rotatory.

2. Shield apparatus according to claim 1, characterized in that the direction of rotation of the first cutterhead (2) is opposite to the direction of rotation of the second body (3).

3. Shield apparatus according to claim 1, further comprising first drive means (4) for selectively driving in rotation both the first cutterhead (2) and the second body (3) simultaneously.

4. The shield apparatus according to claim 1, further comprising a driving wheel provided at an outer circumferential surface of the second body (3), the driving wheel driving the second body (3) to rotate.

5. A shield arrangement according to claim 3, characterized in that the shield arrangement further comprises a second cutterhead (5) rotatable about its axis of rotation and projecting radially at least partially over the outer peripheral surface of the second body (3) in the rotated condition.

6. Shield apparatus according to claim 5, wherein the first drive means (4) selectively drives in rotation the first cutterhead (2), the second body (3) and the second cutterhead (5) simultaneously.

7. Shield apparatus according to claim 1, wherein there is a telescopic connection between the first cutterhead (2) and the first body (1), the first cutterhead (2) being extendable away from the first body (1) and retractable towards the first body (1).

8. A shield arrangement according to claim 1, characterized in that the shield arrangement further comprises an impact device (7) connected to the first body (1) and arranged to provide an impact to the second body (3) in the screwing direction of the first external thread (31).

9. A shield system, comprising a shield arrangement according to any one of claims 1-8, and further comprising extensions (6), wherein one longitudinal end of one of the extensions (6) is connected to an end of the second body (3) facing away from the direction of excavation (M), and wherein the extension (6) rotates at least partially together with the second body (3) about the centre axis.

10. Shield system according to claim 9, characterized in that the outer peripheral surface of the extension (6) has a second external thread (61), the second external thread (61) having the same pitch and direction of rotation as the first external thread (31).

11. The shield system of claim 9, further comprising a grouting device disposed along an outer peripheral surface of the shield system and adapted to provide fluid between the outer peripheral surface of the shield system and an inner wall of a tunnel in which the shield system is located.