CN108756917B - Non-duct-piece assembling device and shield tunneling machine - Google Patents
Non-duct-piece assembling device and shield tunneling machine Download PDFInfo
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- CN108756917B CN108756917B CN201810796688.7A CN201810796688A CN108756917B CN 108756917 B CN108756917 B CN 108756917B CN 201810796688 A CN201810796688 A CN 201810796688A CN 108756917 B CN108756917 B CN 108756917B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
- E21D9/087—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
- E21D9/0873—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines the shield being provided with devices for lining the tunnel, e.g. shuttering
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
Abstract
The invention discloses a tubeless piece assembling device which comprises a reaction frame and at least one tightening shoe ring, wherein the end face of the reaction frame is used for being connected with a propulsion oil cylinder of a shield machine, the tightening shoe ring is used for tightening a tunnel wall, the reaction frame is connected with the tightening shoe ring through a force transmission ring, and each tightening shoe ring comprises an upper tightening shoe, a lower tightening shoe and a tightening oil cylinder which is connected with the upper tightening shoe and the lower tightening shoe. The pipe piece assembling device can ensure that the shield tunneling machine does not need to assemble pipe pieces during construction of hard rock strata. The invention also discloses a shield machine comprising the non-segment assembled segment. The shield machine can be constructed in a soft soil stratum and a hard rock stratum, has a large geological adaptation range, reduces the construction cost, reduces the shield starting preparation work and time, and improves the tunneling speed.
Description
Technical Field
The invention relates to the technical field of tunneling devices, in particular to a tubeless splicing device. In addition, the invention also relates to a shield machine comprising the duct-piece-free assembling device.
Background
The shield machine is used as a special engineering machine for tunneling, and is widely applied to tunnel engineering of subways, railways, highways, municipal administration, hydropower stations and the like.
In the shield machine in the prior art, a shield of a tunnel is constructed during tunneling, namely, segments are assembled along the tunnel, so that forward or stepping counter force of the shield machine is provided for a host machine. Therefore, the shield tunneling machine is mainly applied to tunnel construction of clay or soft rock and other soft soil strata. For the tunnel construction of the hard rock stratum, the tunnel wall has enough hardness and strength, so that the tunnel has better safety without assembling duct pieces for tunnel lining, and can provide the counter force for the forward movement or stepping of the main machine, therefore, when the tunnel construction is carried out on the hard rock stratum, the shield machine is not adopted, but an open type TBM is adopted for construction.
However, for tunnels with long construction distances, the geology of the tunnel formations is often not unitary, and it is common for both soft and hard rock formation sections to exist. For the tunnel with complex geology of the stratum, a shield machine and an open type TBM are required to be alternately constructed, which increases the work and time of starting preparation, seriously restricts the tunneling speed and increases the construction cost. And if the existing shield machine is independently adopted for construction, the segment still assembled in the hard rock stratum section will cause the waste of work, time and cost, and if the segment is not assembled, the forward or stepping counter force of the host machine cannot be provided.
In summary, how to provide a pipeless assembly device capable of providing a counterforce of forward movement of a host machine for a shield machine during construction of a hard rock stratum is a problem to be solved urgently by technical personnel in the field.
Disclosure of Invention
In view of the above, the present invention provides a tube-sheet-free assembling device, which can provide a shield machine constructed in a hard rock formation with a driving reaction force.
The shield machine can work in soft soil stratum and hard rock stratum, has large geological adaptation range, reduces the shield starting preparation work and time while reducing the construction cost, and improves the tunneling speed.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides a no section of jurisdiction assembly device, is used for propping tight boots ring of propping that the thrust cylinder that links to each other with the shield constructs the machine including the terminal surface with at least one, the reaction frame with prop tight boots ring and link to each other through the biography power ring, every prop tight boots ring and all include and prop the boots, prop the boots and connect down prop the tight hydro-cylinder of propping of boots on with down.
Preferably, the number of the tightening cylinders for connecting the upper supporting shoe and the lower supporting shoe is four, and the four tightening cylinders are all vertically arranged.
Preferably, the corresponding ends of the upper supporting shoe and the lower supporting shoe are respectively arranged oppositely, and two ends of the tightening oil cylinder are respectively hinged with two opposite ends of the upper supporting shoe and the lower supporting shoe.
Preferably, the upper supporting shoe and the lower supporting shoe are symmetrically arranged relative to the tightening cylinder.
Preferably, the number of the tightening shoe rings is at least two, and all the tightening shoe rings are axially connected and arranged side by side.
Preferably, the tightening shoe ring is connected with the force transmission ring through a clamping sleeve, one of the clamping sleeve and the tightening shoe ring connected with the clamping sleeve is provided with a limiting flange protruding inwards in the radial direction, the other one of the clamping sleeve and the tightening shoe ring is provided with a limiting groove used for being in concave-convex fit with the limiting flange so as to limit the tightening shoe ring in the axial direction, and the fit length of the limiting flange and the limiting groove is greater than the moving distance of the tightening shoe ring.
Preferably, the reaction frame comprises a plurality of steel pipe sheets which are spliced to form the reaction frame, and two adjacent steel pipe sheets are detachably connected through a connecting piece.
Preferably, the force transmission ring comprises a plurality of circular arc tube pieces which are spliced to form the force transmission ring, and the adjacent circular arc tube pieces are detachably connected.
Preferably, the reaction frame and the force transmission ring are detachably connected through a flange, and the force transmission ring and the clamping sleeve are detachably connected through a bolt.
The utility model provides a shield constructs machine, includes the shield and constructs the quick-witted body, still includes:
the segment erector is movably arranged in the shield tunneling machine body;
the segment-free assembling device is detachably arranged in the shield tunneling machine body and used for switching work with the segment assembling machine according to the geological type of the excavated tunnel, and the segment-free assembling device is any one of the segment-free assembling devices.
When the tubeless splicing device provided by the invention is used, the end surface of the reaction frame is connected with a propulsion oil cylinder of a shield machine, when in tunneling, the stretching oil cylinder extends out to push the upper supporting shoe and the lower supporting shoe to be stretched, so that the upper supporting shoe and the lower supporting shoe stretch the wall of a hole, the reaction frame transmits jacking force acting on the reaction frame to the stretching shoe ring through the force transmission ring, the stretching shoe ring resists the jacking force by means of the friction force between the upper supporting shoe and the lower supporting shoe and the wall of the hole, and provides jacking counter force for the propulsion oil cylinder, so that the shield machine advances. The pipe piece assembling device can ensure that the shield tunneling machine does not need to assemble pipe pieces during construction of hard rock strata.
The shield machine provided by the invention comprises a segment erector and a tubeless assembling device, when the shield machine is constructed in a soft soil stratum, forward pushing counter force can be provided for the shield machine through tunnel segments assembled by the segment erector, and when the shield machine is constructed in a hard rock stratum, the forward pushing counter force can be provided for the shield machine through the tubeless assembling device. Therefore, the shield machine can be constructed in a soft soil stratum and a hard rock stratum, has a large geological adaptation range, reduces the preparation work and time for shield starting while reducing the construction cost, and improves the tunneling speed.
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 front view of an embodiment of a tubeless panel assembly apparatus provided by the present invention;
FIG. 2 is a right side view of an embodiment of a pipeless assembly apparatus provided in the present invention;
FIG. 3 is a left side view of an embodiment of a pipeless assembly apparatus provided in the present invention;
FIG. 4 is a schematic view of a shield tunneling machine according to the present invention in a segment propulsion mode;
FIG. 5 is a schematic view of a shield tunneling machine provided by the present invention during assembling of segments of a transition ring;
FIG. 6 is a schematic view of a shield tunneling machine provided by the present invention in a pipeless assembly mode;
FIG. 7 is a schematic view of the shield tunneling machine provided by the present invention when a tubeless segment assembling device is disassembled and transition ring segments are assembled;
fig. 8 is a schematic view of the shield tunneling machine provided by the present invention returning to the segment propulsion mode.
The reference numerals in fig. 1 to 8 are as follows:
the device comprises a reaction frame 1, a steel pipe sheet 101, a connecting piece 102, a tightening shoe ring 2, an upper tightening shoe 201, a lower tightening shoe 202, a tightening oil cylinder 203, a force transmission ring 3, a clamping sleeve 4, a cutter head 5, a shield body 6, a propulsion oil cylinder 7, a main drive 8, a joist 9, a segment erector 10, a spiral conveyor 11, a hole wall 12, a wall rear filling material 13, a tunnel segment 14, a segment block 1401, a rear matching system 15, a trailer roller 16, a transition ring segment 17, an anchor rod 18, a water stop ring 19 and a no-segment assembling device 20.
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.
The core of the invention is to provide a pipe-piece-free assembling device which can provide tunneling counter force for a shield machine constructed in a hard rock stratum. The shield machine can work in soft soil stratum and hard rock stratum, has large geological adaptation range, reduces the shield starting preparation work and time while reducing the construction cost, and improves the tunneling speed.
Please refer to fig. 1-8, which are drawings for the description of the present application.
The application provides a no section of jurisdiction assembly device, including the terminal surface be used for with the shield constructs the thrust cylinder 7 of machine link to each other the reaction frame 1 with at least one prop tight shoe ring 2 that is used for propping tight hole wall 12, the reaction frame 1 with prop tight shoe ring 2 and link to each other through power transmission ring 3, every props tight shoe ring 2 and all includes and props boots 201, props boots 202 down and connect and prop tight cylinder 203 that props boots 201 and prop boots 202 down.
The device for splicing the pipe pieces without the pipe pieces is mainly used for the shield machine, so that the shield machine can work without splicing the pipe pieces during construction of a hard rock stratum. Therefore, the tubeless sheet assembling device comprises the tightening shoe ring 2 for tightening the hole wall 12, and during work, the pushing force of the pushing oil cylinder 7 acting on the reaction frame 1 is resisted by means of the friction force between the tightening shoe ring 2 and the hole wall 12, so that the forward pushing counter force of the shield tunneling machine is provided, and the shield tunneling machine is made to advance.
Specifically, the tightening shoe ring 2 comprises an upper tightening shoe 201, a lower tightening shoe 202 and a tightening oil cylinder 203, the upper tightening shoe 201 and the lower tightening shoe 202 are driven by the tightening oil cylinder 203 to be away from or close to each other, when the tightening oil cylinder 203 extends, the upper tightening shoe 201 and the lower tightening shoe 202 are away from each other until the tightening force of the tightening oil cylinder 203 reaches a design index, so that the upper tightening shoe 201 and the lower tightening shoe 202 tighten the tunnel wall 12 to provide forward pushing counter force for the shield machine; when the tightening cylinder 203 retracts, the upper supporting shoe 201 and the lower supporting shoe 202 approach each other to be separated from the hole wall 12 and keep a certain gap, so that the propulsion cylinder 7 can drive the tubeless sheet assembling device to move forwards integrally when retracting.
It should be noted that the upper shoe 201 and the lower shoe 202 need to have sufficient strength and rigidity to resist the tightening force of the tightening cylinder 203, avoid the upper shoe 201 and the lower shoe 202 from being chipped and the like during tightening.
It can be understood that the wider the upper shoe 201 and the lower shoe 202, or the greater the number of tightening shoe rings 2, the larger the contact area of the tightening shoe rings 2 with the hole wall 12 when they are tightened, and the greater the friction force between them. Therefore, the friction between the upper shoe 201 and the lower shoe 202 and the hole wall 12 when the tightening shoe ring 2 is tightened can be ensured by selecting the appropriate width and the number of the tightening shoe rings 2.
It will be appreciated that the reaction frame 1 is adapted to be connected to the propulsion cylinder 7 so that the propulsion cylinder 7 acts directly on the reaction frame 1. When the push-push type hydraulic support works, the push oil cylinder 7 is pushed against the reaction frame 1, and the reaction frame 1 provides push reaction force for the push oil cylinder 7, so that the reaction frame 1 needs to have higher density, higher mass and higher inertia to resist the pushing force of the push oil cylinder 7.
The reaction frame 1 and the tightening shoe ring 2 are connected through a force transmission ring 3, and the force transmission ring 3 is used for transmitting the jacking force of the propulsion cylinder 7 transmitted from the reaction frame 1 and the friction force between the tightening shoe ring 2 and the hole wall 12.
It should be noted that the force transmission ring 3 is set according to the axial width requirement, and the density of the force transmission ring 3 is smaller than that of the reaction frame 1, so when a certain axial distance is required between the reaction frame 1 and the tightening shoe ring 2, since the density of the reaction frame 1 is larger, in order to reduce weight and save cost, the force transmission ring 3 can be used to compensate for the axial distance.
To sum up, the device is assembled to no tube sheet that this application provided, during the use, link to each other the terminal surface of reaction frame 1 with the thrust cylinder 7 of shield structure machine, during the tunnelling, prop tight hydro-cylinder 203 and stretch out, prop boots 201 and the tensioning of boots 202 down in the promotion, thereby make and prop boots 201 and boots 202 down and prop tight hole wall 12, reaction frame 1 will be acted on the top thrust of reaction frame 1 through force transfer ring 3 and transmit to propping tight boots ring 2, prop tight boots ring 2 and rely on the friction between both of boots 201 and the boots 202 down and the hole wall 12 and resist this top thrust, provide the top thrust counter-force for thrust cylinder 7, thereby make the shield structure machine advance. The pipe piece assembling device can ensure that the shield tunneling machine does not need to assemble pipe pieces during construction of hard rock strata.
In consideration of the balance of the tightening forces of the upper and lower tightening shoes 201 and 202, in one embodiment, the number of the tightening cylinders 203 connecting the upper and lower tightening shoes 201 and 202 is four, and the four tightening cylinders 203 are all vertically arranged.
That is to say, in this embodiment, the upper supporting shoe 201 and the lower supporting shoe 202 of each supporting shoe ring 2 are respectively driven by two supporting cylinders 203, and the four supporting cylinders 203 are vertically arranged in a pairwise opposite manner, so that the upper supporting shoe 201 and the lower supporting shoe 202 are subjected to a force in the vertical direction, the upper supporting shoe 201 can better support the upper hole wall, and the lower supporting shoe 202 can better support the lower hole wall.
In consideration of the problem of the balance of the stress of the upper supporting shoe 201 and the lower supporting shoe 202, in a specific embodiment, the corresponding ends of the upper supporting shoe 201 and the lower supporting shoe 202 are respectively arranged oppositely, and the two ends of the tightening cylinder 203 are respectively hinged with the two opposite ends of the upper supporting shoe 201 and the lower supporting shoe 202.
That is to say, two stretching cylinders 203 are respectively located at two ends between the upper stretching shoe 201 and the lower stretching shoe 202, two ends of one stretching cylinder 203 are respectively hinged with one end corresponding to the upper stretching shoe 201 and the lower stretching shoe 202, and two ends of the other stretching cylinder 203 are respectively hinged with the other end corresponding to the upper stretching shoe 201 and the lower stretching shoe 202. The connection mode enables the upper supporting shoe 201 and the lower supporting shoe 202 to be stressed from two ends respectively, and guarantees the smoothness of movement of the upper supporting shoe 201 and the lower supporting shoe 202 when the upper supporting shoe 201 and the lower supporting shoe 202 are tensioned under the driving of the tensioning oil cylinder 203.
Further, in consideration of the problem of the balance of the forces applied to the upper shoe 201 and the lower shoe 202, in a specific embodiment, the upper shoe 201 and the lower shoe 202 are symmetrically arranged with respect to the tightening cylinder 203. This ensures that the upper supporting shoe 201 and the lower supporting shoe 202 are equally stressed when the tightening cylinder 203 extends, and therefore, it is ensured that the upper supporting shoe 201 and the lower supporting shoe 202 have equal tightening force, so that the friction force between the upper supporting shoe 201 and the hole wall 12 is consistent with the friction force between the lower supporting shoe 202 and the hole wall 12, and the service life consistency of the upper supporting shoe 201 and the lower supporting shoe 202 is further ensured.
In order to increase the friction between the tightening shoe rings 2 and the tunnel wall 12, in one embodiment the number of tightening shoe rings 2 is at least two, all tightening shoe rings 2 being axially connected and arranged side by side.
That is, the present embodiment increases the contact area between the tightening shoe ring 2 and the hole wall 12 by increasing the number of the tightening shoe rings 2, thereby increasing the frictional force therebetween.
It will be appreciated that when at least two tightening shoe rings 2 are arranged axially side by side, the tightening shoe ring 2 which is axially outermost and adjacent to the reaction frame 1 is connected to the force transmission ring 3.
This application does not do specifically and restricts the axial connected mode between the adjacent tight shoe ring 2 that props, and adjacent tight shoe ring 2 that props can detachable connect, also can be a body structure.
In view of the problem of axial limiting of the tightening shoe ring 2, on the basis of any one of the above embodiments, the tightening shoe ring 2 is connected with the force transmission ring 3 through the ferrule 4, one of the ferrule 4 and the tightening shoe ring 2 connected with the ferrule 4 is provided with a radially inward convex limiting flange, the other one is provided with a limiting groove for being in concave-convex fit with the limiting flange to axially limit the tightening shoe ring 2, and the fit length of the limiting flange and the limiting groove is longer than the moving distance of the tightening shoe ring 2.
It can be understood that the cutting ferrule 4 is used for axial limiting of the tightening shoe ring 2, so as to ensure the axial position of the tightening shoe ring 2 and avoid axial movement of the tightening shoe ring 2 relative to the force transmission ring 3.
As an optimal scheme, one side of the upper supporting shoe 201 and one side of the lower supporting shoe 202 of the supporting shoe ring 2 connected with the cutting sleeve 4 are both provided with a limiting flange protruding inwards in the radial direction, and one end of the cutting sleeve 4 is provided with a stopping flange and a limiting groove, wherein the stopping flange is attached to one side, away from the cutting sleeve 4, of the limiting flange to stop the axial movement of the supporting shoe ring 2, and the limiting groove is used for being matched with the limiting flange in a concave-convex mode.
In order to avoid propping when tight boots ring 2 tensioning, go up and prop boots 201 and prop boots 202 down when the tensioning along with propping the extension of tight hydro-cylinder 203, spacing flange breaks away from with spacing recess, spacing flange is greater than the displacement distance who props boots 201 with spacing recess's cooperation length in this application, and simultaneously, spacing flange is greater than the displacement distance who props boots 202 down with spacing recess's cooperation length to this guarantees that spacing flange and spacing recess cooperate throughout not break away from, thereby guarantees to prop tight boots ring 2 and have the axial spacing all the time.
For the convenience of disassembling and assembling the reaction frame 1, in a specific embodiment, the reaction frame 1 includes a plurality of steel pipe sheets 101 for splicing the reaction frame 1, and two adjacent steel pipe sheets 101 are detachably connected by a connecting member 102.
Preferably, the reaction frame 1 is formed by assembling six steel pipe sheets 101, the outer sides of the steel pipe sheets 101 are arc-shaped, and a circular outer wall of the reaction frame 1 is formed after the assembly is finished; the inner side of the steel pipe sheet 101 is linear, and a hexagonal inner wall of the reaction frame 1 is formed after the assembly is completed.
Considering the convenience of detaching and installing the force transmission ring 3, in a specific embodiment, the force transmission ring 3 comprises a plurality of arc tube pieces for splicing the force transmission ring 3, and the adjacent arc tube pieces are detachably connected.
Preferably, the force transmission ring 3 is formed by splicing four quarter circular arc segments, and a circular force transmission ring is formed after splicing.
In consideration of the convenience of installation and disassembly between the components of the tubeless assembly device, in one embodiment, the reaction frame 1 and the force transmission ring 3 are detachably connected through a flange, and the force transmission ring 3 and the clamping sleeve 4 are detachably connected through a bolt.
In addition to the above assembling device without segments, the present invention also provides a shield machine, which comprises a shield machine body, and further comprises:
the segment erector 10 is movably arranged in the shield tunneling machine body;
the segment-free assembling device 20 is detachably arranged in the shield tunneling machine body and used for switching work with the segment assembling machine 10 according to the geological type of the excavated tunnel, and the segment-free assembling device 20 is the segment-free assembling device disclosed by any one of the embodiments. The shield machine further comprises a cutter head 5, a shield body 6, a propulsion oil cylinder 7, a main drive 8, a joist 9, a spiral conveyor 11, a tunnel segment 14, a segment block 1401, a rear matching system 15, trailer rollers 16 and other structures, and the structures refer to the prior art and are not described in detail herein.
That is to say, this embodiment provides shield constructs machine not only includes segment erector 10, can assemble the section of jurisdiction through segment erector 10 and come to provide the top that advances for it when soft soil stratum construction, still includes no section of jurisdiction and assembles device 20, and shield constructs machine when hard rock stratum construction, utilizes no section of jurisdiction to assemble device 20 and provides the top that advances for it and pushes up the counter force. Therefore, the shield machine can be constructed in a soft soil stratum and a hard rock stratum, has a large geological adaptation range, reduces the preparation work and time for shield starting while reducing the construction cost, and improves the tunneling speed.
The application also provides a construction method of the shield machine disclosed in the above embodiment, please refer to fig. 4 to 8, which are schematic diagrams of the shield machine in different construction states.
When constructed in a hard rock formation, steps S11 to S15 are included.
Step S11: the piston rod of the tightening cylinder 203 is extended out to enable the upper shoe 201 and the lower shoe 202 to be tightened on the hole wall 12 until the tightening force of the upper shoe 201 and the lower shoe 202 reaches the design index.
Step S12: and extending a piston rod of a propulsion oil cylinder 7 of the shield tunneling machine until the tail end of the piston rod abuts against the end surface of the reaction frame 1.
Step S13: and rotating a cutter head 5 of the shield machine and starting the shield machine, gradually increasing the pressure of the propulsion oil cylinder 7 until the expected tunneling pressure value, starting tunneling by the tunnel boring machine, and stopping the tunnel boring machine after the tunneling distance of a stepping cycle is finished.
Step S14: the piston rod of the tightening cylinder 203 is retracted, so that the upper shoe 201 and the lower shoe 202 are retracted.
Step S15: and retracting a piston rod of the propulsion oil cylinder 7, enabling the propulsion oil cylinder 7 to drag the non-pipe-sheet assembling device to advance for a stepping cycle tunneling distance, and jumping to the step S11 to perform the next stepping cycle until the construction in the hard rock stratum is completed.
When in construction of a soft soil layer, the segment erector 10 is adopted to assemble the tunnel segments 14, and the filling material 13 is injected into the gap between the back of the tunnel segment 14 and the tunnel wall after the wall is filled so as to reinforce the tunnel segment 14 and provide forward pushing counterforce for the shield tunneling machine through the tunnel segment 14.
When the shield machine is shifted from the soft soil stratum to the hard rock stratum, namely, the shield machine is switched from the segment propulsion working mode to the non-segment propulsion working mode, the method comprises the steps S21 to S23.
Step S21: and assembling a transition ring segment 17 at the front end of the assembled tunnel segment 14 by using a segment assembling machine 10.
It should be noted that the transition ring segment 17 and the tunnel segment 14 are axially fixed by bolts.
Step S22: the transition ring segment 17 is reinforced.
Step S23: the tubeless panel assembly 20 is installed.
Specifically, the tubeless segment assembling device 20 is sequentially installed according to the sequence of the reaction frame 1, the force transmission ring 3 and the tightening shoe ring 2, and after the installation is completed, a certain adjusting gap is reserved between the rear end of the tightening shoe ring 2 and the assembled transition ring segment 17.
It should be noted that, in order to prevent the formation water seepage, step S220 is included before step S22 is executed.
Step S220: and a water stop ring 19 is additionally arranged at the front end of the transition ring duct piece 17.
Considering the specific manner in which the transition ring segment 17 is reinforced, step S22 includes step S221.
Step S221: and injecting wall filling materials 13 into the gap between the transition ring segment 17 and the tunnel wall, and driving anchor rods 18 into the wall surface of the tunnel, wherein the number of the anchor rods 18 is selected according to actual requirements.
When the shield machine is shifted from the hard rock stratum to the soft soil stratum, namely, the shield machine is switched from the non-segment propulsion working mode to the segment propulsion working mode, the method comprises the steps S31 to S33.
Step S31: and (3) dismantling the tubeless assembling device 20 in sequence according to the sequence of the tensioning boot ring 2, the force transmission ring 3 and the reaction frame 1.
Step S32: and assembling the transition ring segment 17 by using the segment assembling machine 10.
It should be noted that the number of the transition ring segments 17 is not limited in the present application, and preferably, the number of the transition ring segments 17 is at least two rings.
Step S33: the transition ring segment 17 is reinforced.
It is to be understood that the reinforcement of the transition ring segment 17 in step S33 may be performed in the reinforcement manner of step S221.
It should be noted that the terms "front end", "rear end", etc. in this application refer to an orientation or relationship that is consistent with the heading direction of the shield machine. The terms "upper", "lower", and the like, indicate orientations or relationships that are based on the orientations or positional relationships shown in the drawings, are used for convenience in description and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The non-duct-piece assembling device and the shield machine provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. The tubeless splicing device is characterized by comprising a reaction frame (1) and at least one tightening shoe ring (2), wherein the end face of the reaction frame (1) is used for being connected with a propulsion oil cylinder (7) of a shield tunneling machine, the tightening shoe ring (2) is used for tightening a tunnel wall (12), the reaction frame (1) is connected with the tightening shoe ring (2) through a force transmission ring (3), and each tightening shoe ring (2) comprises an upper tightening shoe (201), a lower tightening shoe (202) and a tightening oil cylinder (203) which is used for connecting the upper tightening shoe (201) with the lower tightening shoe (202);
the tightening boot ring (2) is connected with the force transfer ring (3) through a clamping sleeve (4), one of the clamping sleeve (4) and the tightening boot ring (2) connected with the clamping sleeve (4) is provided with a limiting flange protruding inwards in the radial direction, the other one of the clamping sleeve (4) and the tightening boot ring (2) is provided with a limiting groove which is in concave-convex fit with the limiting flange so as to limit the tightening boot ring (2) in the axial direction, and the matching length of the limiting flange and the limiting groove is greater than the moving distance of the tightening boot ring (2).
2. The tubeless sheet assembly device according to claim 1, wherein the number of the tightening cylinders (203) connecting the upper shoe (201) and the lower shoe (202) is four, and the four tightening cylinders (203) are vertically disposed.
3. The tubeless sheet assembly device according to claim 2, wherein the corresponding ends of the upper supporting shoe (201) and the lower supporting shoe (202) are oppositely arranged, and the two ends of the tightening cylinder (203) are hinged to the opposite ends of the upper supporting shoe (201) and the lower supporting shoe (202).
4. The tubeless panel assembly apparatus of claim 3 wherein the upper shoe (201) and the lower shoe (202) are symmetrically disposed relative to the tensioner cylinder (203).
5. The tubeless panel assembly according to claim 1, characterized in that the number of said tightening shoe rings (2) is at least two, all said tightening shoe rings (2) being axially connected and arranged side by side.
6. The pipe-piece-free assembling device according to claim 1, wherein the reaction frame (1) comprises a plurality of steel pipe pieces (101) which are used for being spliced into the reaction frame (1), and two adjacent steel pipe pieces (101) are detachably connected through a connecting piece (102).
7. The tubeless segment assembly device of claim 1, wherein the force transfer ring (3) comprises a plurality of arc segments for splicing the force transfer ring (3), and adjacent arc segments are detachably connected.
8. The tubeless sheet assembly device according to claim 1, wherein the reaction frame (1) and the force transmission ring (3) are detachably connected by a flange, and the force transmission ring (3) and the ferrule (4) are detachably connected by a bolt.
9. The utility model provides a shield constructs machine, includes the shield and constructs the quick-witted body, its characterized in that still includes:
the segment erector (10) is movably arranged in the shield tunneling machine body;
the segment-free assembling device (20) is detachably arranged in the shield tunneling machine body and used for switching work with the segment assembling machine (10) according to the geological type of an excavated tunnel, and the segment-free assembling device (20) is the segment-free assembling device according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810796688.7A CN108756917B (en) | 2018-07-19 | 2018-07-19 | Non-duct-piece assembling device and shield tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810796688.7A CN108756917B (en) | 2018-07-19 | 2018-07-19 | Non-duct-piece assembling device and shield tunneling machine |
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| CN108756917B true CN108756917B (en) | 2020-05-22 |
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| CN111156016A (en) * | 2019-12-31 | 2020-05-15 | 上海隧道工程有限公司 | Pipe jacking pipe joint structure capable of reducing pipeline connection times and construction method |
| CN111622764B (en) * | 2020-06-11 | 2022-08-02 | 中铁工程装备集团有限公司 | Shield tunneling machine and station passing method thereof |
| CN111720133B (en) * | 2020-06-29 | 2022-05-31 | 中国铁建重工集团股份有限公司 | Supporting device and shield tunneling equipment |
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| CN205654347U (en) * | 2016-04-25 | 2016-10-19 | 中铁工程装备集团有限公司 | Articulated formula of two shield TBM props boots structure |
| CN206346740U (en) * | 2016-12-28 | 2017-07-21 | 中铁工程装备集团有限公司 | A kind of adjustable outer triumphant structure of open type TBM spacing |
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| CN203905950U (en) * | 2014-06-10 | 2014-10-29 | 中铁建设投资集团有限公司 | Movable counterforce device used for shield-construction origination shaft |
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| CN102410027A (en) * | 2011-10-19 | 2012-04-11 | 中铁隧道装备制造有限公司 | Novel dual-mode TBM (tunnel boring machine) and control method thereof |
| CN202789856U (en) * | 2012-06-29 | 2013-03-13 | 中国铁建重工集团有限公司 | Limiting protection device of mechanical part |
| CN103256056A (en) * | 2013-05-23 | 2013-08-21 | 西南交通大学 | Model shield tunneling machine starting device capable of achieving self-balancing of counter-force |
| CN104033157A (en) * | 2014-06-10 | 2014-09-10 | 中铁建设投资集团有限公司 | Movable reaction equipment for shield launching shaft |
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| CN108756917A (en) | 2018-11-06 |
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