JP4674711B2 - Excavator - Google Patents

Description

  The present invention relates to an excavator, and more particularly, to an excavator for tunnel construction such as a shield excavator and a propulsion unit.

  Generally, when constructing a tunnel, an excavator is excavated from the start shaft toward the arrival shaft, and the excavator that has reached the arrival shaft is disassembled to collect some parts.

  In this case, when the reaching shaft is an existing manhole or a narrow shaft, the reaching shaft is not provided, or when the two excavators are docked in the ground without providing the reaching shaft, Because it becomes difficult to recover, the built-in excavator must be dismantled to a size that can be removed by gas fusing, etc., removed through the tunnel to the start shaft, and collected, which requires significant effort and labor. In addition, parts that can be reused are limited.

  For this reason, a shield machine as shown in Patent Document 1 has been proposed.

  In the shield machine shown in Patent Document 1, the outer shell has a double structure of an outer body and an inner body, the outer body is divided into front and rear body parts that can be folded inward, and the folding jack or shield jack is formed on the outer body side. Etc., the outer cylinder and the inner cylinder are unlocked after the excavation is completed, and the inner cylinder is detached from the outer cylinder so that it can be recovered.

JP 2005-133468 A

  In the shield machine shown in Patent Document 1 described above, the middle folding device such as the middle folding jack and the sealing device is provided on the outer trunk side, and after the inner trunk is detached from the outer trunk, The folding device remains in the outer body, and the folding device cannot be reused.

  In addition, such a shield machine cannot be used as a shield machine after the inner cylinder has been pulled out of the outer cylinder.

  Such a problem is not limited to a shield machine, but is also a problem in a propulsion machine of a main thrust type.

  An object of the present invention is to use a general-purpose shield machine or propulsion machine including a folding device, a cutter head, a cutter head drive unit, etc. as an inner trunk, as a part thereof, or as a single unit, without any effort. An object of the present invention is to provide an excavating machine that can be used and collected easily and inexpensively and can be diverted and reused.

(1) In order to achieve the above object, an excavation machine according to the present invention includes an outer trunk and an inner trunk installed inside the outer trunk,
The outer body has an outer body front body part and an outer body rear body part,
Said outer barrel front body and the outer cylinder after the barrel, while being connected via a fold in the outer cylinder unit having an outer cylinder sealing device, the multiple positions in the circumferential direction toward the inner cylinder side over the axial direction A guide sled that protrudes and abuts the outer surface of the inner cylinder and supports the inner cylinder so as to be slidable in the axial direction;
The inner cylinder uses a general-purpose shield machine or propulsion machine, and has an inner trunk front trunk part and an inner trunk rear trunk part,
The inner torso front torso and the inner torso rear torso are connected by an inner torso sealing device and an inner torso center folding device having an inner torso center folding jack, and the face side end of the inner torso front torso A partition wall provided on the cutting blade side of the partition wall, and a cutter head driving unit that is provided in the front body portion of the inner cylinder and drives the cutter head,
The outer trunk and the inner trunk are excavators that can be fixed by a plurality of fixing means arranged in a circumferential direction ,
The guide sled is formed by attaching a slide member to an inner surface of a steel material .

  According to the present invention, it is possible to fix the outer body composed of the outer body front and rear body parts and the inner body composed of the inner body front and rear body parts by the plurality of fixing means, and the inner body includes the inner body sealing device and the inner body middle folding jack. Since the inner cylinder folding device, partition wall, cutter head, cutter head drive unit, etc. are provided, if the outer cylinder and inner cylinder are fixed by the fixing means, the outer cylinder as a tunnel support remains, and the inner cylinder The inner cylinder can be collected and reused and reused together with the installed device.

  In this case, since the inner cylinder includes the folding device, the general-purpose shield machine or propulsion machine can be used as an inner cylinder, as a part of it, or as a single unit, with minimal effort. As a machine, it can be used and collected easily and inexpensively for diversion and reuse.

  Also, the radial vibration of the inner cylinder when the cutter head rotates is reliably transmitted to the outer cylinder via the guide, and the rotational force on the inner cylinder caused by the cutter head rotation and the thrust force during excavation is fixed. It is reliably transmitted to the outer trunk by the means and absorbed by the frictional force between the outer trunk and the ground.

  Further, when the inner cylinder is carried in / out with respect to the outer cylinder, the guide portion functions as a carry-in / out guide, and can be carried in / out easily.

(2) In the present invention, in (1), the inner cylinder using the general-purpose shield machine or propulsion machine is used as a basic machine, and this basic machine is operated alone as a machine, or the basic machine is used as an inner machine. As described above, it can be diverted and shared between shield machines, between propellers and shield machines, and between propellers.

  By adopting such a configuration, the shield machine and propulsion machine diverted to the inner trunk can be used and shared as many times as a single machine, shield machine, and propulsion machine after excavation. Reduction can be achieved.

(3) In the present invention, in (2), the inner trunk as the basic machine is configured such that the components can be divided into large and small parts, and the components are recovered from the reaching shaft or the starting shaft after completion of excavation. At the time, it can be made recoverable according to the construction conditions.

  By adopting such a configuration, the components of the inner trunk, which is the basic machine, can be divided into large and small parts. Therefore, when collecting components from the reaching shaft or starting shaft after excavation, It can be easily handled according to conditions, and cost reduction can be achieved.

(4) In the present invention, in any one of (1) to (3), the cutter head can be expanded or contracted, or an additional cutter head can be attached or detached according to the diameter of a tunnel to be excavated.

  By adopting such a configuration, the cutter head can be moved in the direction of the cutting face or in the direction opposite to the cutting face by attaching / detaching the expansion / contraction diameter of the cutter head or the extension cutter head section. By changing the above, it is possible to easily obtain an excavator corresponding to tunnels having different tunnel diameters after inner cylinder recovery.

(5) In the present invention, in any one of (1) to (3), a shield jack that is attached to the inner trunk side in parallel with the folding device and is connected to the outer trunk by bolts and nuts. It can have.

  By adopting such a configuration, the amount of eccentricity between the front end surface of the segment and the rear end of the shield jack can be reduced, the force applied to the spreader can be reduced, and the spreader can be downsized. It is possible to effectively use the work space in the inner cylinder while avoiding the state in which the protrusion protrudes into the inner cylinder.

(6) In the present invention, in any one of (1) to (3), a shield jack attached to the inner cylinder folding device and connected to the outer cylinder by bolts and nuts is provided. Can do.

  By setting it as such a structure, a general purpose shield machine can be diverted as it is.

(7) In the present invention, in any one of (1) to (3), a shield jack connected to the outer trunk rear trunk portion of the outer trunk by a bolt and a nut may be provided.

  By adopting such a configuration, the amount of eccentricity between the front end surface of the segment and the rear end of the shield jack is further reduced compared with the case of (5), and the force applied to the spreader is reduced. While being able to achieve downsizing, it is possible to avoid the state where the shield jack protrudes into the inner cylinder, and to further effectively use the work space in the inner cylinder.

  Moreover, a general-purpose propulsion device can be diverted as it is.

(8) In the present invention, in any one of (1) to (3), between the outer body and the inner body, a shield jack connected to the outer body by bolts and nuts. can do.

  By adopting such a configuration, when the outer diameter difference between the outer cylinder and the inner cylinder is large, using the gap between the outer cylinder and the inner cylinder and installing the shield jack in the gap, the eccentricity of the shield jack The amount can be reduced and the shield machine length can be made very short.

It is sectional drawing in alignment with the axial direction of the excavation machine concerning one embodiment of this invention. It is a cross-sectional view of FIG. It is a principal part expanded sectional view of FIG. It is a principal part expanded sectional view corresponding to FIG. 3 of the excavation machine concerning other embodiment of this invention. It is a principal part expanded sectional view corresponding to FIG. 3 of the excavation machine concerning further another embodiment of this invention. It is a principal part expanded sectional view corresponding to FIG. 3 of the excavation machine concerning further another embodiment of this invention. It is sectional drawing which shows the state of the inner trunk as a basic machine at the time of diversion between shield machines. It is sectional drawing which shows the division | segmentation structure of FIG. 7A. It is sectional drawing which shows arrangement | positioning of the shield jack at the time of diverting the inner cylinder which is a basic machine to the outer cylinder from which an outer diameter differs, and attached the shield jack to the inner cylinder folding apparatus. It is sectional drawing which shows arrangement | positioning of the shield jack at the time of diverting the inner cylinder which is a basic machine to the outer cylinder from which an outer diameter differs, and attached the shield jack to the outer trunk rear trunk | drum. FIG. 5 is a cross-sectional view showing the arrangement of a shield jack when the inner cylinder, which is a basic machine, is diverted to an outer cylinder having a different outer diameter, and is a cross-sectional view in which the shield jack is attached to a gap between the outer cylinder and the inner cylinder. It is sectional drawing of the basic machine in the case of using a propulsion machine as a basic machine for an inner trunk between a propulsion machine and a shield machine. It is sectional drawing which shows the division | segmentation structure of FIG. 9A. It is sectional drawing in the case of using a propulsion machine as a basic machine between the propulsion machines of a double structure. It is sectional drawing which shows the state which carries out and collect | recovers an inner trunk | drum by a subdivision from a reaching shaft. It is sectional drawing which shows the state which divides an inner trunk | drum with a large block from a reach shaft, and carries out and collect | recovers. It is sectional drawing which shows the state which divides an inner trunk | drum with a large block from a starting vertical shaft, and carries out and collect | recovers. It is sectional drawing which shows the state which carries out and collect | recovers an inner trunk | die by a subdivision from a starting shaft.

  Embodiments of the present invention will be described below with reference to the drawings.

  1-3 is a figure which shows the excavation machine concerning one embodiment of this invention.

  FIG. 1 is a cross-sectional view of the excavator according to the present embodiment along the axial direction. The excavator 10 is used as a shield excavator and has an outer cylinder 12 and an inner cylinder 14.

  The outer body 12 is made of a single steel plate having a cylindrical shape with the same diameter as the horizontal shaft 16 to be excavated, and has an outer body front body part 18 and an outer body rear body part 20.

  The outer trunk front barrel part 18 and the outer trunk rear trunk part 20 are formed such that a rear end part 18A of the outer trunk front trunk part 18 and a front end part 20A of the outer trunk rear trunk part 20 are formed in a superposed state. A folding device 21 is provided.

  The outer cylinder folding device 21 is provided with an outer cylinder sealing device 22 between the rear end portion 18A and the front end portion 20A to be sealed.

  Further, the outer cylinder middle folding device 21 is not provided with an outer trunk middle folding jack, and an inner trunk middle folding jack 44 described later also serves as an outer trunk middle folding jack. The rear end portion 18 </ b> A of the portion 18 and the front end portion 20 </ b> A of the outer trunk rear trunk portion 20 are connected via a plurality of middle-folded connecting members 24.

  Although a connection jack is used as the middle connection member 24, a joint member capable of following a middle bending state may be provided instead of the connection jack.

  Further, when the inner connecting member 24 is pulled out from the outer trunk 12 to the arrival shaft side or the starting shaft side, the outer trunk front trunk portion 18 is pulled out together with the inner trunk 14. It also has a function to prevent.

  Further, guide sleds 26 as guide portions are provided on the inner wall surfaces of the outer trunk front barrel portion 18 and the outer trunk rear barrel portion 20.

  As shown in FIG. 2, the guide sled 26 protrudes toward the inner cylinder 14 in the axial direction at a plurality of positions (for example, four locations) in the circumferential direction, and abuts against the outer surface of the inner cylinder 14 to contact the inner cylinder. 14 is slidably supported in the axial direction.

  The guide sled 26 has a slide member 26B attached to the inner surface of the H-shaped steel 26A. When the guide sled 26 is formed to have a diameter corresponding to the diameter of the side pit 16 to be excavated, And has a function of reliably transmitting radial vibration R on the inner cylinder 14 side during excavation to the outer cylinder, and further to the inner cylinder 12 with respect to the outer cylinder 12. It also has a function as a sledge for facilitating movement of the inner cylinder 14 when carrying in / out 14.

  The H-shaped steel 26A can be replaced with a steel material other than the H-shaped steel.

Further, as the guide portion, a projecting portion is provided in a semicircular shape at one position in the circumferential direction, for example, on the lower inner wall surface of the outer trunk front barrel portion 18 and the outer trunk rear barrel portion 20, or the guide sled 26 described above. It can be or provided in a plurality of positions in the circumferential direction as, also, not only when forming continuously even in the axial direction, it is also possible to intermittently provide a plurality.

  Further, the guide part is not limited to the case where the inner cylinder 14 is slid like the above-described guide sled 26 as long as it can support the inner cylinder 14 so as to be slidable in the axial direction. It may be such that it can roll.

  In addition, a tail seal 30 is provided at the rear end 20B of the outer trunk rear trunk 20 to seal between the segment 28 that is constructed along with the excavation.

  The inner cylinder 14 uses a general-purpose shield machine or propulsion machine, has a cylindrical shape made of a single steel plate, and is installed inside the outer cylinder 12.

  Further, like the outer cylinder 12, the inner cylinder 14 has an inner cylinder front cylinder part 32 and an inner cylinder rear cylinder part 34, and can be folded.

  The inner torso front torso 32 and the inner torso rear torso 34 are provided on the inner surface between the rear end 32A of the inner torso front torso 32 and the front end 34A of the inner torso rear torso 34. They are connected by a folding device 36.

  The inner cylinder folding device 36 has a sealing member 40 on the outer surface side of a spherical seal plate 38 provided so as to protrude from the inner surface of the front end portion 34A toward the inner surface of the rear end portion 32A. A sealing device 42 that seals by contacting the inner surface, and a plurality of inner devices, one end of which is rotatably attached to the inner surface side of the inner body front body portion 32 and the other end is attached to the inner surface side of the inner body rear body portion 34. A trunk jack 44 is provided.

  Then, by driving a plurality of inner cylinder middle folding jacks 44, the inner cylinder 12 is folded, and the outer cylinder 12 is also folded in accordance with the inner folding.

  Further, the inner body 12 includes a partition wall 48 provided at an end portion of the inner body front body portion 32 on the face 46 side, a cutter head 50 provided on the face 46 side of the partition wall 48, and an inner body front body portion 34. In the case of a cutter head driving unit 52, an erector 76, and other equipment necessary for excavation, for example, a muddy water shield excavator, provided in the muddy water shield excavator, a mud pipe 80 and a mud pipe 82 are provided. The mud type shield machine is equipped with equipment including a screw conveyor 84.

  The inner cylinder 14 equipped with such devices is in the same state as that of a general-purpose shield machine or propulsion machine, and the general-purpose shield machine or propulsion machine can be used as it is. .

  In the propulsion device, the folding device in the shield machine is called a direction correcting device. Here, for convenience, the folding device is used as a folding device.

  Further, the cutter head 50 is usually of an outer diameter corresponding to the outer diameter of the inner cylinder 14, and in this embodiment, as shown in FIG. 1, depending on the diameter of the horizontal shaft 16 to be excavated. The extension cutter head unit 54 is detachable.

  Further, instead of making the extension cutter head portion 54 detachable, the cutter head 50 may be made to be able to expand and contract.

  As described above, the cutter head 50 can be moved in the direction of the cutting blade 46 or in the direction opposite to the cutting blade 46 by attaching or detaching the expansion / contraction diameter of the cutter head 50 or the additional cutter head portion 54. By changing the diameter, it is possible to easily obtain an excavator corresponding to tunnels having different tunnel diameters after the inner cylinder 14 is recovered.

  Further, the excavator in the present embodiment is used as a shield excavator, and a shield jack 56 is provided for this purpose.

  In this embodiment, as shown in FIG. 3, the shield jack 56 is attached to the inner surface side of the inner trunk rear barrel portion 34 of the inner trunk 14 in parallel with the inner trunk folding device 36, and the rear end side is outside. The body 12 is connected to the trunk 12 by bolts and nuts, and a spreader 58 that abuts against the front end surface of the segment 28 is provided at the rear end of the shield jack 56.

  Thus, by attaching the shield jack 56 to the inner surface side of the inner trunk rear barrel portion 34, the eccentric amount between the front end surface of the segment 28 and the rear end of the shield jack 56 is reduced, and the force applied to the spreader 58 is reduced. Thus, the spreader 58 is reduced in size.

  Further, as shown in FIGS. 2 and 3, the outer cylinder 12 and the inner cylinder 14 are fixed by a plurality of fixing means 60 arranged in the circumferential direction.

  The fixing means 60 projects a fixing rod 64 from the inner cylinder 14 to the outer cylinder 12 through a hole 62 formed on the inner cylinder 14 side, and the fixing rod 64 is formed in an annular shape on the inner surface of the outer cylinder 12. A portion that protrudes into the inner cylinder 14 of the fixing rod 64 is covered with a lid 68, and the lid 68 is fixed to the inner cylinder 14 with bolts and nuts 78. .

  Further, instead of the fixing rod 64 of the fixing means 60 in this embodiment, a hydraulic jack may be used.

  Further, as the fixing means, the outer cylinder 12 and the inner cylinder 14 may be fixed using a plurality of bolts and nuts arranged in the circumferential direction. In this case, the bolts and nuts may be radial or axial. They can be connected in either direction.

  By using such fixing means 60, the rotational force K to the inner cylinder 14 generated by the rotation of the cutter head 50 and the thrust force S during excavation are reliably transmitted to the outer cylinder 12 by the fixing means 60. It is absorbed by the frictional force between the outer trunk 12 and the ground 70.

  Further, in order to improve the sealing performance, as shown in FIG. 3, a sealing material 72 is arranged between the outer cylinder 12 and the inner cylinder 14 on the front end side, or the outer cylinder 12 and the inner cylinder are bolted on the rear end side. -It is fixed with a nut 74.

  As described above, the outer body 12 including the outer body front and rear body parts 18 and 20 and the inner body 14 including the inner body front and rear body parts 32 and 34 can be fixed by the plurality of fixing means 60, and the sealing device 42 and Since the inner cylinder folding device 36 having the inner cylinder folding jack 44, the partition wall 48, the cutter head 50, the cutter head driving unit 52, and the like are provided, the fixing of the outer cylinder 12 and the inner cylinder 14 by the fixing means 60 is released. For example, the outer cylinder 12 can be left and the inner cylinder 14 can be recovered together with the device provided on the inner cylinder 14 and can be diverted and reused.

  In this case, since the inner cylinder 14 includes the inner cylinder folding device 36, the inner cylinder of a general-purpose shield machine or propulsion device can be used and collected easily and inexpensively with minimal effort. Therefore, diversion and reuse can be achieved.

  Further, in this excavator 10, the cutter head 50 can be moved in the direction of the cutting face or in the direction opposite to the cutting face by attaching / detaching the cutter head 50 with the expansion / contraction diameter or the extension cutter head portion 54. It is possible to pull out in either the direction of the cutting face 46 or the direction opposite to the cutting face, and it is possible to easily and reliably collect the inner cylinder 14 regardless of whether or not there is a reaching shaft in the excavation direction. .

  Further, by changing the diameter of the outer cylinder 12 while keeping the inner cylinder 14 as it is, it is possible to easily obtain an excavator corresponding to tunnels having different tunnel diameters after the inner cylinder 14 is recovered.

  Further, the radial vibration R of the inner cylinder 14 when the cutter head is rotated is reliably transmitted to the outer cylinder 12 through the guide sled 26, and the rotational force K to the inner cylinder 14 generated by the rotation of the cutter head 50 and the time of excavation. The force S in the thrust direction is reliably transmitted to the outer trunk 12 by the fixing means, and is absorbed by the frictional force between the outer trunk 12 and the ground 70.

  Further, when the inner cylinder 14 is carried in / out with respect to the outer cylinder 12, the guide sled 26 functions as a sled and can be carried in / out easily.

  Further, by attaching a shield jack 56 on the inner cylinder 14 side in parallel with the inner cylinder middle folding jack 44 and connecting the outer cylinder 12 with bolts and nuts, the front end face of the segment 28 and the rear of the shield jack 56 are connected. By reducing the amount of eccentricity with the end and reducing the force applied to the spreader 58, the spreader 58 can be reduced in size, and the state where the shield jack 56 protrudes into the inner cylinder 14 is avoided. The work space inside can be used effectively.

  FIG. 4 is a view showing an excavator according to another embodiment of the present invention.

  In this embodiment, the shield jack 56 is integrally attached to the inner surface side of the spherical sealing material 38 of the inner cylinder folding device 36 by welding or the like, and the rear side is connected to the outer cylinder 12 and the bolt By connecting with the nut 78, the general-purpose shield machine can be diverted as it is.

  Even when the inner cylinder 14 is a propulsion unit, the shield jack 56 is attached to the inner surface side of the spherical sealing material 38 of the inner cylinder folding device 36.

  Other configurations and operations are the same as those in the above embodiment, and a description thereof will be omitted.

  FIG. 5 is a view showing an excavator according to still another embodiment of the present invention.

  In this embodiment, the shield jack 56 is connected to the outer trunk rear trunk portion 20 of the outer trunk 12 by a bolt and nut 78, so that the case of the embodiment shown in FIGS. In addition, the amount of eccentricity between the front end surface of the segment 28 and the rear end of the shield jack 56 can be reduced to reduce the force applied to the spreader 58, thereby reducing the size of the spreader 58. By avoiding the state in which 56 protrudes into the inner cylinder, the working space in the inner cylinder 14 can be more effectively utilized.

  In addition, general-purpose propulsion devices can be used as they are.

  Other configurations and operations are the same as those in the above embodiment, and a description thereof will be omitted.

  FIG. 6 is a view showing an excavator according to still another embodiment of the present invention.

  In this embodiment, the shield jack 56 is connected between the outer cylinder 12 and the inner cylinder 14 with the bolts and nuts 78 between the outer cylinder 12 and the inner cylinder 14. When the outer diameter difference is large, the gap between the outer cylinder 12 and the inner cylinder 14 is used, and the shield jack 56 is installed in the gap, thereby reducing the eccentric amount of the shield jack 56 and reducing the force applied to the spreader 58. The spreader 58 can be reduced in size, and the length of the shield machine 10 can be made very short.

  Other configurations and operations are the same as those in the above embodiment, and a description thereof will be omitted.

  Next, such an excavator 10 is diverted and shared with each inner cylinder 14 as a basic machine, and the diverted form and the divided form of the basic machine will be described with reference to FIGS. 7 to 9.

As shown in FIG. 7A, the basic machine uses the inner cylinder 14 as a basic machine, and the cutter head 50, the chamber hood 86, the cutter head driving unit 52, and the inner cylinder folding device. 36, shield jack 56, tail portion 88, screw conveyor 84, erector 76, and the like.

  Further, the inner trunk 14 is divided from the start shaft and the reaching shaft and can be diverted. As shown in FIG. 7B, the cutter head 50, the chamber hood 86, and the cutter head driving unit 52 are provided. The inner cylinder folding device 36 and the screw conveyor tip 90, the shield jack 56, the tail 88, the screw conveyor 84, and the erector 76 are divided.

  In this case, the cutter spoke / face plate, the cutter head drive unit 52, the inner cylinder folding device 36, and the screw tip 90 are the basic machine common to the inner cylinder 14, but other parts may be used depending on the construction conditions. Also trying to use.

  The chamber hood 86 is diverted to a shield machine with the same diameter, and is newly created as an outer trunk with other outer diameters.

  The shield jack 56 is used in accordance with the outer trunk, and when the difference between the outer trunk and the inner trunk becomes large, the shield jack 56 having the outer diameter is used.

  The erector 76 is used in accordance with the outer body, and when the difference between the outer body and the inner body becomes large, the one that matches the outer diameter is used.

  The tail portion 88 is diverted to a shield machine having the same diameter, and the tail portion 88 is newly made as an outer trunk at other outer diameters.

  The electric motor and the hydraulic motor of the cutter head drive unit 52 can be increased in number of motors with a torque that matches the outer diameter and geological conditions.

  This basic machine (inner cylinder 14) can be used as many times as a single unit, not a double structure, as long as the segment outer diameter and excavation outer diameter are the same as the construction conditions.

  That is, at the minimum diameter, the inner cylinder 14 is collected and diverted as a single body.

  If the outer diameter of the segment and the outer diameter of the excavation differ as construction conditions, the outer cylinder 12 is newly created each time using the basic machine that enables efficient division and assembly as the inner cylinder 14, and the outer diameter of the shield machine can be freely adjusted. It can be changed to.

  Although it depends on the construction conditions at the site, generally, the outer trunk 12 is left on the ground, and the inner trunk 14, shield jack 56, erector 76, etc. are recovered from the reaching and starting shafts, and diverted repeatedly to reduce costs. I try to plan.

  Further, in the double structure of the outer cylinder 12 and the inner cylinder 14, the arrangement of the shield jack 56 varies depending on the outer diameter difference between the outer cylinder 12 and the inner cylinder 14, and therefore, for example, FIGS. 8A to 8B according to the outer diameter difference. The arrangement as shown in FIG.

  FIG. 8A shows a case where the shield jack 56 is attached to the inner cylinder folding device 36. In this case, since the difference in the outer diameter between the outer cylinder 12 and the inner cylinder 14 is small, the shield jack 56 is disposed even in this way. The amount of eccentricity between the jack 56 and the segment 26 can be reduced.

  In this case, the outer cylinder 12 is a new product, a component of the inner cylinder 14 (the cutter head 50, the chamber hood 86, the cutter head drive unit 52, the inner cylinder folding device 36, the screw conveyor tip 90, the shield jack 56, and the like. The tail part 88, the screw conveyor 84, and the erector 76) can all be diverted.

  In this case, the collection is a reaching shaft.

  FIG. 8B shows a case where the shield jack 56 is attached to the outer trunk rear trunk portion 20 behind the inner trunk folding device 36. In this case, the outer diameter difference between the outer trunk 12 and the inner trunk 14 is larger than that in FIG. Since the eccentric amount of the shield jack and the spreader of this type increases and becomes unusable, the amount of eccentricity is reduced by the above-described arrangement.

  In this case, the outer cylinder 12 is a new work, the inner cylinder 14 side is a cutter head 50, a cutter head drive unit 52, an inner cylinder folding device 36, a screw conveyor 84, and a shield jack 56 and an erector 76 are converted or newly produced. Like to do.

  In this case, the collection is a reaching shaft.

  8C shows a case where the shield jack 56 is attached to the outer cylinder 12 with a gap between the outer cylinder 12 and the inner cylinder 14, and in this case, the outer diameter difference between the outer cylinder 12 and the inner cylinder 14 is larger than in the case of FIG. 8B. Since the shield jack 56 has an outer diameter difference that enters the gap, the above-described arrangement allows the shield jack 56 to have a small amount of eccentricity so that the length of the shield machine 10 can be made very short. Yes.

  In this case, the outer cylinder 12 is a new work, the inner cylinder 14 side is a cutter head 50, a cutter head drive unit 52, an inner cylinder folding device 36, a screw conveyor 84, and a shield jack 56 and an erector 76 are converted or newly produced. Like to do.

  In this case, the recovery can be performed by either the transmission shaft or the reaching shaft.

Conversion and sharing between propulsion unit and shield machine The shield machine with a double structure of outer and inner cylinders is a general-purpose propulsion machine with a split inner structure. The outer diameter of the shield machine is changed freely.

  As shown in FIG. 9A, the basic aircraft is a propulsion device that becomes an inner trunk 14A, and is similar in function and appearance to a conventional propulsion device, and is generally used as a general propulsion device.

  The basic machine is composed of a cutter head 50A, a chamber hood 86A, a cutter head drive unit 52A, an inner cylinder folding device 36A, a screw conveyor 84A, a leading conduit insertion unit 92, and the like.

  Further, this basic machine is divided into a structure that can be recovered from the starting shaft and the reaching shaft and diverted, and as shown in FIG. 9B, a cutter head 50A, a chamber hood 86A, a cutter head drive unit 52A, The inner cylinder folding device 36A and the screw conveyor tip 90A, the screw conveyor 84A, and the tip conduit insertion portion 92 are divided.

  In this case, except for the chamber hood 86A and the tip conduit insertion portion 92, almost all of the cutter spoke / face plate, cutter head driving portion 52A, inner cylinder folding device 36A, screw tip portion 90A, screw conveyor 84A, etc. are included in the shield machine. It is designed to be used as a torso.

  The chamber hood 86A and the leading conduit insertion portion 92 are used when returning from the shield machine to the propulsion device.

  Since the screw conveyor 84A is short when used as an inner cylinder of a shield machine, it is divided so that an intermediate part can be easily added.

  The electric motor and the hydraulic motor of the cutter head drive unit 52A can be increased in number of motors with a torque that matches the outer diameter and geological conditions.

  This basic machine (inner cylinder 14A) can be used any number of times as a single unit as long as the outer diameter of excavation as the construction condition is the same.

  The shield machine with a double structure of the outer trunk and inner trunk using this basic machine is equipped with a basic machine that enables efficient division and assembly if the segment outer diameter and excavation outer diameter are different as construction conditions. As the body 14A, a new outer body is created each time so that the outer diameter of the shield machine can be freely changed.

  Although it depends on the construction conditions at the site, in general, the outer trunk is left on the ground, and the inner trunk 14A, shield jack 56, erector 76, etc. are recovered from the reaching and starting shafts and reused to reduce costs. I try to figure it out.

  Further, in this double structure of the outer cylinder and the inner cylinder, since the arrangement of the shield jack 56 differs depending on the outer diameter difference between the outer cylinder and the inner cylinder 14A, for example, in FIGS. 8A to 8C described above according to the outer diameter difference. The arrangement shown is used.

  In addition, when using this propulsion machine for the shield machine as the inner trunk 14A, it is necessary to newly install a shield jack 56 and an erector 76 that are not included in the propulsion machine.

  In any of these cases, most of the propulsion devices such as the cutter head 50A, the cutter head drive unit 52A, the inner cylinder folding device 36A, the screw conveyor tip 90A, and the screw conveyor 84A can be diverted.

  Moreover, since arrangement | positioning of the shield jack 56, suppression of eccentricity, etc. are as having mentioned above, description is abbreviate | omitted.

Diversion and common use between propulsion units As shown in Fig. 10, in the propulsion unit with a double structure of the outer and inner cylinders, the inner cylinder 14A is used as the basic propulsion unit and a new outer cylinder 12A with a different outer diameter is created. To cope with propulsion devices of various outer diameters.

  In this case, the propulsion unit of the basic machine serving as the inner trunk 14A has the basic division configuration shown in FIGS. 9A and 9B, and the details thereof will be omitted.

  Further, in this double-structured propulsion device, a simple center folding device 94 is also provided on the outer body 12A, and the ratio of the outer body 12A and the inner body 14A is large and the radius of curvature is small. Even with a large propulsion unit, there is no inflow of earth and sand into the groove, and the construction is safe and can be recovered from both the starting shaft and the reaching shaft.

  Further, the cutter head 50A is provided with an outer cylinder cutter 96 for excavating the outer cylinder 12A, and an outer cylinder chamber hood 98 is provided without using the chamber hood 86A of the basic machine.

  The propulsion unit collects both the outer trunk 12A and the inner trunk 14A when collecting from the reaching shaft, and collects only the inner trunk 14A when collecting from the starting shaft.

  Next, FIGS. 11 to 14 show the recovered state of the excavator.

  FIG. 11 shows a state in which the inner trunk 14 is carried out and collected from the reaching shaft 100 in small divisions.

  In this case, when the reach shaft 100 is relatively narrow, the outer trunk 12 is left on the ground, and the inner trunk 14 is cut by the cutter head 50, the cutter head driving unit 52, the inner trunk folding device 36, the electric motor and the hydraulic motor. 102, the screw conveyor 84, the shield jack 56, and the erector 76, and are sequentially carried out and collected from the reaching shaft by the above procedure.

  FIG. 12 shows a state in which the inner trunk 14 is divided into large blocks from the reaching shaft 100 and carried out and collected.

  In this case, when the reach shaft 100 is relatively wide, the outer trunk 12 is left on the ground, and the inner trunk 14 is cut by the cutter head 50, the cutter head driving unit 52, the inner trunk folding device 36, an electric motor and a hydraulic motor. 102, the screw conveyor 84, the shield jack 56, and the erector 76 are divided into large blocks, and sequentially carried out and collected from the reaching shaft by the above procedure.

  FIG. 13 shows a state where the inner trunk 14 is divided into large blocks from the start shaft 104 and carried out and collected.

  In this case, the difference between the outer diameters of the outer cylinder 12 and the inner cylinder 14 is large, and the carry-out space in the pit is relatively large. The outer cylinder 12 is left in the ground, and the inner cylinder 14 is connected to the erector 76 and the shield jack 56. And the screw conveyor 84, the cutter head 50, the cutter head drive unit 52, the inner cylinder folding device 36, the electric motor and the hydraulic motor 102, and are sequentially carried out and collected from the start shaft 104 in the above procedure. I am doing so.

  FIG. 14 shows a state in which the inner trunk 14 is carried out and collected from the start shaft 104 in small divisions.

  In this case, the outer diameter difference between the outer trunk 12 and the inner trunk 14 is small, and the carry-out space in the pit is relatively narrow. The screw conveyor 84, the inner cylinder folding device 36, the electric motor / hydraulic motor 102, the cutter head driving unit 52, and the cutter head 50 are subdivided into parts, and are sequentially carried out and collected from the start shaft 104 in the above procedure.

  As described above, in the excavator in the present embodiment, the shield excavator and the propulsion unit that are diverted from the basic machine to the inner trunk can be diverted and shared any number of times after the excavation is completed. Since it can be divided into large and small parts according to the construction conditions, it can be easily diverted and used as a general-purpose shield machine and propulsion machine, and cost reduction can be achieved.

  The present invention is not limited to the embodiments described above, and can be modified into various forms within the scope of the gist of the present invention.

  For example, in each of the embodiments described above, the case where the excavator of the present invention is used as a shield excavator has been described. However, the present invention is not limited to these cases, and can be used as a propulsion device by omitting the installation of a shield jack. It is.

  In addition, when diverting the inner cylinder of a propulsion unit to a shield machine, it can be easily diverted by adding a shield jack. When diverting the inner cylinder of a shield machine to a propulsion unit, the shield jack It can be easily converted by removing.

DESCRIPTION OF SYMBOLS 10 Excavator 12, 12A Outer cylinder 14, 14A Inner cylinder 18 Outer trunk front trunk part 20 Outer trunk rear trunk part 21 Outer trunk inner folding device 22 Outer trunk sealing device 24 Outer trunk middle folding connection member 26 Guide sled 32 In front of inner trunk Body part 34 Inner part rear part 36, 36A Inner part middle folding device 42 Inner part sealing device 44 Inner part middle folding jack 46 Face 48 Bulkhead 50 Cutter head 52 Cutter head drive part 54 Additional cutter head part 56 Shield jack 60 Fixed Means 66 Receiving part 74, 78 Bolt / Nut

Claims (8)

An outer cylinder, and an inner cylinder installed inside the outer cylinder,
The outer body has an outer body front body part and an outer body rear body part,
Said outer barrel front body and the outer cylinder after the barrel, while being connected via a fold in the outer cylinder unit having an outer cylinder sealing device, the multiple positions in the circumferential direction toward the inner cylinder side over the axial direction A guide sled that protrudes and abuts the outer surface of the inner cylinder and supports the inner cylinder so as to be slidable in the axial direction;
The inner cylinder uses a general-purpose shield machine or propulsion machine, and has an inner trunk front trunk part and an inner trunk rear trunk part,
The inner torso front torso and the inner torso rear torso are connected by an inner torso sealing device and an inner torso center folding device having an inner torso center folding jack, and the face side end of the inner torso front torso A partition wall provided on the cutting blade side of the partition wall, and a cutter head driving unit that is provided in the front body portion of the inner cylinder and drives the cutter head,
The outer trunk and the inner trunk are excavators that can be fixed by a plurality of fixing means arranged in a circumferential direction ,
The guide sledge is formed by attaching a slide member to an inner surface of a steel material . The excavator according to claim 1,
The inner cylinder using the general-purpose shield machine or propulsion machine is used as a basic machine, and this basic machine is operated alone as an excavator, or the basic machine is used as an inner trunk between shield machine and propulsion machine and shield machine. This excavator is characterized by being divertable and shared between each other and between propellers. In claim 2,
The inner cylinder as the basic machine is configured so that the components can be divided into large and small parts, and can be collected according to the construction conditions when collecting the components from the reaching shaft or starting shaft after completion of excavation. An excavator characterized by that. In any one of Claims 1-3,
The excavator is characterized in that the cutter head can be enlarged or reduced in diameter, or an additional cutter head can be attached or detached in accordance with the diameter of a tunnel to be excavated. In any one of Claims 1-3,
An excavation machine comprising a shield jack attached to the inner cylinder side in parallel with the inner cylinder folding jack and connected to the outer cylinder by bolts and nuts. In any one of Claims 1-3,
An excavation machine comprising a shield jack attached to the inner cylinder folding device and connected to the outer cylinder by bolts and nuts. In any one of Claims 1-3,
An excavation machine comprising a shield jack connected to a rear trunk portion of the outer trunk by a bolt and a nut. In any one of Claims 1-3,
An excavation machine having a shield jack connected to the outer body with a bolt and a nut between the outer body and the inner body.

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