JP3408239B2 - Horizontal section shield machine and vertical section shield machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontally long shield shield machine and a vertically long shield shield machine.

[0002]

2. Description of the Related Art As a shield machine, a shield frame having a spectacle-shaped cross section is axially divided into a front body and a rear body,
It is known that the front torso is composed of a right front torso and a left front torso each having a cutter, and the right front torso and the left front torso are connected to the back to be bendable ( JP-A-1-
278696 publication). Such a shield machine excavates in a state in which the right front body part and the left front body part with respect to the rear body are misaligned with each other, so that the rotation moment generated at this time causes the entire excavator machine to swivel and the excavation cross-sectional shape. It is transformed by twisting.

[0003]

However, in the above shield machine, the right front body portion and the left front body portion are adjacent to each other and flexibly bent with respect to the rear body. The seal structure becomes complicated, and problems remain in cost and reliability. That is, with the rear torso as a reference, since the right front torso and the left front torso are bent separately with respect to the rear torso, the right front torso, the left front torso and the rear torso are There is no choice but to complicate the seal structure of the connection part of the three parties.

Further, in the shield machine, the right front body part and the left front body part are excavated in a state in which the directing directions are different from each other, whereby the entire excavator machine is swiveled to twist the tunnel cross-sectional shape. Therefore, when excavating a curve along a predetermined construction planned line and when the curve deviates from the planned line, the posture of the machine such as roll and pitch is not controlled for correction.

An object of the present invention, which was devised in view of the above circumstances, is to simplify the seal structure of the connecting portion of each cylinder and to control the posture such as roll and pitch while curving a curve. Machine and a longitudinal section shield machine.

[0006]

In order to achieve the above object, a horizontal cross-section shield machine according to the first aspect of the present invention divides a horizontal cross-section shield frame into a front body, a middle body, and a rear body. The front torso is composed of a right front torso, a center front torso and a left front torso, each of which is formed into a tubular shape, and a cutter is provided at least on the right front torso and the left front torso, and the center front torso is provided. And the right front body and left front body are connected to the middle body so that they can be bent only in the vertical direction, and the middle body is connected to the rear body in a vertically and horizontally bendable manner. is there.

According to the present invention, the central front torso is fixed to the middle torso, so that the right front torso and the left front torso on both sides of the middle front torso are above and below the fixed central front torso. It will bend only in the direction. In this way, the right front body part and the left front body part are bent only in the up-down direction with the central front body part that is not bent being sandwiched therebetween, and therefore, the seal structure of the connection part with the middle body can be simplified.

Further, since the middle body and the rear body are connected to each other in a freely bendable manner in the vertical and horizontal directions, the middle body and the rear body can be bent at a predetermined center angle according to the construction plan line. You can dig a curve. And when it deviates from the planned line,
Since the right front torso and the left front torso are connected so that they can be bent only vertically with respect to the middle torso, the vertical bending angle with respect to the middle torso of the right front torso and left front torso is adjusted. By doing so, the attitude control of the machine (pitch / roll control, etc.) can be performed, and the deviation from the planned line can be corrected.

At this time, if the middle bending angle between the middle cylinder and the rear cylinder is kept, rolling correction and pitching correction of the excavator can be performed while maintaining a predetermined curve excavation. This correction is made by vertically bending the right front body and the left front body in the vertical direction with respect to the middle body, and the seal structure of the connecting portion between the right front body, the left front body, and the middle body is described above. As described above, there is no problem in durability and reliability even if the frequency of correction, that is, the frequency of breaks is high.

According to a second aspect of the present invention, there is provided a shield machine having a vertically long cross section in which a shield frame having a vertically long cross section is axially divided into a front body, a middle body and a rear body, and the front body is formed into a cylindrical upper side. A front body, a center front body, and a lower front body, and a cutter is provided on the upper front body and a cutter is provided on at least one of the center front body and the lower front body. And the lower front torso is fixed to the middle torso, the upper front torso is connected to the middle to be bendable only in the left and right directions, and the middle torso is connected to the rear to be bendable in the up, down, left and right directions. .

According to a third aspect of the present invention, there is provided a shield machine having a vertically long cross section in which a shield frame having a vertically long cross section is axially divided into a front body, a middle body and a rear body, and the front body is formed into a cylindrical upper side. It is composed of a front torso, a center front torso and a lower front torso, and a cutter is provided on at least the upper front torso and the lower front torso to fix the central front torso to the middle torso and the upper front torso. The lower body and the lower front torso are connected to the middle body so as to be bendable only in the left-right direction, and the middle body is connected to the rear body so as to be bendable in the vertical and horizontal directions.

According to a fourth aspect of the present invention, there is provided a shield machine having a vertically long cross section in which a shield frame having a vertically long cross section is axially divided into a front body, a middle body and a rear body, and the front body is formed into a cylindrical upper side. A front body, a center front body, and a lower front body.A cutter is provided on at least one of the upper front body and the center front body, and a cutter is provided on the lower front body. The upper front torso and the central front torso are connected to the middle to bend only in the left and right direction, and the middle torso is connected to the rear to bend vertically and horizontally. is there.

According to a fifth aspect of the present invention, there is provided a shield machine having a horizontally long cross section in which a shield frame having a horizontally long cross section is axially divided into a front body, a middle body and a rear body, and the front body is formed into a cylindrical right side. It consists of a front body, a center front body, and a left front body.The center front body is provided with a main cutter, and the main cutter is appropriately rotated according to the rotation of the main body to the right front body and the left front body. A swing cutter is provided to excavate the area, and the central front trunk is fixed to the middle trunk, and the right front trunk and left front trunk are connected to the middle trunk so that they can be bent only in the vertical direction. On the other hand, it is flexibly connected in the vertical and horizontal directions.

A longitudinally sectioned shield machine according to a sixth aspect of the present invention is an upper machined machine in which a longitudinally shielded shield frame is axially divided into a front body, a middle body and a rear body, and the front body is formed into a cylindrical shape. It consists of a front body, a center front body, and a lower front body.The center front body is provided with a main cutter, and the main cutter is appropriately rotated with the rotation of the upper front body and the lower front body. A swing cutter for excavating the region of the trunk is provided, the central front trunk is fixed to the middle trunk, and the upper front trunk and the lower front trunk are connected to the middle trunk so as to be bendable only in the left-right direction. Is connected to the rear body so that it can be bent vertically and horizontally.

The lateral length section shield machine according to a seventh aspect of the present invention, the shielding frame of the oblong cross-sectional shape is divided into a front cylinder and the middle cylinder and a rear cylinder in the axial direction, it is formed in front torso respectively cylindrical It consists of a right front torso, a center front torso, and a left front torso.The center front torso is provided with a main cutter, and the main cutter is rotated appropriately according to the rotation of the right front torso and left front torso. A swing arm for excavating the area of the part is provided, a planetary cutter is provided at the tip of the swing arm, the center front torso is fixed to the middle torso, and the right front torso and left front torso are only up and down in the middle torso. It is connected so that it can be bent, and the middle body is connected to the rear body so that it can be bent in the vertical and horizontal directions.

According to an eighth aspect of the shield machine with a longitudinal cross section, a shield frame having a longitudinal cross section is axially divided into a front body, a middle body, and a rear body, and the front body is formed into a cylindrical upper side. It consists of a front body, a center front body, and a lower front body.The center front body is provided with a main cutter, and the main cutter is appropriately rotated with the rotation of the upper front body and the lower front body. A swing arm for excavating the region of the trunk is provided, a planetary cutter is provided at the tip of the swing arm, the center front trunk is fixed to the middle trunk, and the upper front trunk and the lower front trunk are left and right in the middle trunk. It is connected so that it can be bent only, and the middle body is connected to the rear body so that it can be bent vertically and horizontally.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a three-sided view of a shield machine with a horizontally long cross section according to the present embodiment, FIG. 2 is a plan view, FIG. 3 is a front view, and FIG. 4 is a side view (IV-IV in FIG. 1). 5 is a sectional view taken along line VV in FIG. 1.

As shown in FIG. 1, in this shield machine 1 having a horizontally long cross section, a cylindrical shield frame 2 having a horizontally long cross section is axially divided into a front body 3, a middle body 4 and a rear body 5, The front torso 3 includes a right front torso 7 having a cutter 6 and a center front torso 8 and a left front torso 9 each having a cutter 6, and the center front torso 8 is fixed to the middle torso 4. The right front torso portion 7 and the left front torso portion 9 are connected to the middle body 4 so as to be bendable only in the vertical direction, and the middle body 4 is connected to the rear body 5 so as to be bendable in the vertical and horizontal directions.

More specifically, as shown in FIGS. 2 to 5, the shield machine 1 having a horizontally long cross section has a cylindrical shield frame 2 having a horizontally long cross section. As shown in FIG. 3, the shield frame 2 has a cross-sectional shape of a land track shape composed of left and right semicircular portions 2a and a central straight portion 2b, and has an axially front body 3, a middle body 4, and a rear body 4. It is divided into a torso 5. At the front end of the rear body 5, there is provided an insertion cylinder portion 10 that has been reduced in diameter once. The insertion tube portion 10 is inserted into the rear portion of the middle body 4 via a seal member 11 so as to be bendable in the vertical and horizontal directions. The seal member 11 is a middle-breaking seal (a ring-shaped lip seal or the like) in a general middle-breaking shield.
Is used.

The middle body 4 and the rear body 5 are bent in the vertical and horizontal directions by the first center folding jack 12. A plurality of the first middle folding jacks 12 are arranged at predetermined intervals in the circumferential direction of the middle body 4, and one end of which is fixed to the middle body 4 is a bracket 13.
And the other end is supported by a bracket 14 fixed to the insertion cylinder portion 10 of the rear body 5. The bending in the left-right direction by the first middle folding jack 12 may be a so-called V-fold as shown in FIG. 8 (a) or an X-fold shown in FIG. 8 (b), and the vertical bending is shown in FIG. 9 (a). It may be V-folded as shown or X-folded as shown in FIG. 9 (b). Further, it is also possible to make a bend in which the left-right direction and the vertical direction are combined.

Inside the rear body 5, there is provided a propulsion jack 16 for advancing the excavator 1 by applying a reaction force to the existing segment 15. A plurality of propulsion jacks 16 are provided at predetermined intervals in the circumferential direction of the rear body 5. Also, the rear torso 5
An erector (not shown) for assembling the segment 15 is provided inside the. The erector is constructed by assembling the segment 15 in the circumferential direction inside the rear body 5 that is stopped by a tail seal 17 (brush seal or the like) provided on the inner peripheral surface of the rear end of the rear body 5 to form a substantial tunnel. It is constructed so that the inner wall is sequentially added.

On the other hand, the front body 3 is composed of a right front body portion 7, a central front body portion 8 and a left front body portion 9 which are each formed in a tubular shape. As shown in FIG. 2, the right front torso portion 7 and the left front torso portion 9 are each formed in a tubular shape from a semi-cylindrical member 18 and a flat plate member 19, respectively, and the central front torso portion 8 is also shown in FIG. It is composed of a rectangular tube member 20. And the central front body part 8
Is integrally fixed to the middle body 4, and the right front body part 7 is provided on both sides thereof.
And the left front torso portion 9 are attached to the middle torso 4 so as to be bendable only in the vertical direction, and the right front torso portion 7 and the left front torso portion 9 are attached to both side surfaces 21 of the square tubular member 20 of the central front torso portion 8. The flat plate members 19 and 19 are in contact with each other.

Inside the right front torso portion 7, the center front torso portion 8 and the left front torso portion 9, as shown in FIGS. 2 to 5, there are provided partition walls 22 for partitioning the inside into front and back. Each partition wall 22 is provided with a cutter 6 for excavating a face. The cutter 6 is rotationally driven by a drive motor (not shown). As shown in FIG. 6, on the left and right of the front surface of the middle body 4, there are inserted cylindrical portions 23 for mounting the right front body portion 7 and the left front body portion 9 so as to sandwich the central front body portion 8, respectively. It is provided. The left and right insertion tube portions 23 are formed to be slightly smaller than the right front body portion 7 and the left front body portion 9 and each include a semi-cylindrical member 24 and a flat plate member 25.

The right front torso portion 7 and the left front torso portion 9 are fitted into the left and right insertion tube portions 23, 23 via the sealing members 26 so as to be bendable only in the vertical direction. At this time,
As shown in FIG. 5, the flat plate member 19 of the left front torso portion 9 includes the flat plate member 25 of the left insertion tube portion 23 and the square tube member 2 of the central front torso portion 8.
0 and the left side surface 21 are interposed. Since the right front torso 7 has the same configuration, only the left front torso 9 will be described below. As the seal member 26, a middle broken seal (a ring-shaped lip seal or the like) in a general middle broken shield is used. Then, on the inner surface of the flat plate member 19 of the left front torso portion 9, a convex portion 27 serving as a fulcrum at the time of center bending is formed.
Is provided.

The convex portion 27 is a flat plate member 19 of the left front body portion 9.
It is provided at a position separated from the rear end by a predetermined distance L, and when the left front torso portion 9 tries to open to the left with the convex portion 27 as a fulcrum, as shown by an imaginary line 28 in FIG. The flat plate member 19 of the left front torso portion 9 is pressed against the left side surface 21 of the square tube member 20 of the central front torso portion 8 to prevent the opening thereof. The protrusions 27 may be formed on the inner surface of the flat plate member 19 of the left front torso portion 9 not only in a mountain range shape in the vertical direction but also intermittently formed at predetermined intervals.

The convex portion 27 is provided not only on the inner surface of the flat plate member 19 of the left front torso portion 9 but also on the inner surface of the semi-cylindrical member 18. The convex portion 27 provided on the inner surface of the semi-cylindrical member 18 has a shape similar to that of an ordinary middle folding shield, and allows the middle bending of the left front body portion 9 in the vertical direction with respect to the middle body 4. Meanwhile, it is formed so as to slide on the surface of the left insertion cylindrical portion 23 when it is bent in the middle. The convex portion 27 may be provided on the outer peripheral surface of the left insertion cylindrical portion 23 instead of the inner peripheral surface of the left front torso portion 9 as in the present embodiment. The above structure is exactly the same for the right front torso portion 7. In FIG. 6, 29 is a seal line for the left and right front torso portions 7 and 9, and 30 is a seal line for the rear torso 5.

Left front body 9 and right front body 7 and middle body 4
Is bent only in the up-down direction by the second center folding jack 31. At this time, in the left front torso 9 and the right front torso 7, the respective flat plate members 19 and 19 are arranged at the center front torso 8
The vertical bending is guided by sliding contact with the left and right side surfaces 21, 21 of the rectangular tubular member 20, and at the same time the lateral opening is suppressed by the lever action of the convex portion 27 shown in FIG. The second center folding jack 31 includes the left front torso 9 and the right front torso 7.
A plurality of them are arranged at predetermined intervals in the circumferential direction, one end of which is supported by a bracket 32 which is fixed to the front body portions 7 and 9, and the other end of which is supported by a bracket 33 which is fixed to the insertion cylinder portion 23 of the middle body 4. Has been done. The vertical bending may be a so-called V-fold as shown in FIG. 10 (a) or an X-fold as shown in FIG. 10 (b).

The partition wall 22 of the central front body portion 8 is provided with a screw conveyor 34 branched in a Y shape. As shown in FIG. 2 and FIG. 3, the earth and sand inlets 35 of the screw conveyor 34 are arranged on the lower left and right sides of the partition wall 22 of the central front body part 8, and are integrated in front of each partition wall 22, 22, 22. Sediment in the cutter chamber 36 (sediment intake chamber) formed in the above is taken in in a balanced manner. Further, since the central front body part 8 is integrated with the middle body 4, a center-folding jack or the like is not necessary, and a sufficient space for installing the Y-shaped screw conveyor 34 can be secured inside thereof.

The operation of the present embodiment having the above configuration will be described.

According to this shield machine 1 having a horizontally long section,
As shown in FIG. 6, the central front torso 8 is integrally fixed to the middle torso 4, so that the right front torso 7 and the left front torso 9 on both sides thereof are fixed to each other. 8 will be bent only in the vertical direction. Thus, since the right front torso portion 7 and the left front torso portion 9 sandwich the central front torso portion 8 between them and are bent only in the up-down direction, the sealing structure of the connecting portion with the middle torso 4 is provided. Can be simplified. That is, as shown in FIGS. 2 and 4, the insertion tube portions 2 provided on the left and right of the middle body 4
The right front torso portion 7 and the left front torso portion 9 are attached to 3 and 23, respectively, and a ring-shaped member is provided between the left and right insertion tube portions 23 and 23, the right front torso portion 7 and the left front torso portion 9, respectively. Sealing member 26,
If 26 (such as a lip seal) is interposed, the seal will be perfect with a simple structure.

Further, since the middle body 4 and the rear body 5 are flexibly connected in the up, down, left and right directions (see FIGS. 8 and 9), the middle bending angle between the middle body 4 and the rear body 5 is defined as the construction plan line. A predetermined curve excavation can be performed by setting the center bending angle to match. And
When it deviates from the planned line, the right front torso 7 and the left front torso 9 are connected to the middle torso 4 so as to be bendable only in the vertical direction (see FIG. 10). The attitude control of the machine 1 (pitch / roll control, etc.) by adjusting the vertical bending angle with respect to the middle body 4 of the front body portion 9
It is possible to correct the deviation from the planned line.

At this time, if the middle bending angles of the middle cylinder 4 and the rear cylinder 5 are held, fine adjustment such as rolling correction and pitching correction of the excavator 1 can be performed while maintaining a predetermined curve excavation. For example, when the excavator 1 is corrected to pitch upward during curve excavation, the left front torso 9 and the right torso 9 as shown in FIG. The front body portion 7 and the front body portion 7 are bent upward when viewed from the front. As a result, as shown in FIG. 10, in addition to the cutters 6, 6 of the left and right front torso portions 7, 9 facing upward and the excavation direction facing upward, as shown by arrows in FIG. 10 (b). Since the outer surface lower portions 37 of the left and right front torso portions 7 and 9 are subjected to earth pressure resistance due to the excavation, the posture of the excavator 1 is corrected to pitch upward.

Similarly, when the rolling machine 1 is subjected to clockwise rolling correction when viewed from the front, as shown in FIG. 11 (b), the left front torso 9 is bent downward and the right front torso 7 is moved upward. Bend it. Also, if you want to make a weak correction,
As shown in (c), only the right front torso 7 may be bent upward, or conversely, only the left front torso may be bent downward. By the above operation, the rolling correction of the excavator 1 can be performed during the predetermined curve excavation.

These corrections are made by vertically bending the right front torso 7 and the left front torso 9 with respect to the middle torso 4, but the right front torso 7, the left front torso 9 and the middle torso 4 are formed. Since the seal structure of the connection part with and can be simplified as described above, even if the frequency of correction, that is, the frequency of center bending is high,
There is no problem in durability and reliability of the seal member 26.

As shown in FIG. 12, the rolling correction is performed by bending the right front torso portion 7 downward with respect to the middle body 4 with the middle body 4 being bent upward with respect to the rear body 5. The left front body portion 9 may be bent upward with respect to the middle body 4.

As shown in FIG. 13, the yawing correction of the excavator 1 is carried out by pushing the propelling jacks 16 at the left and right ends. In this case, the present embodiment is the shield machine 1 having a horizontally long cross section, and therefore the propulsion jacks 1 at the left and right ends are provided.
6 the distance W ₁ between the center line C of the excavator 1 is prolonged, with resulting large yawing moment, the area of the right and left sides of the shield frame 2 is much smaller than the area of the upper and lower sides, when yawing rotation Since the pressure receiving resistance from the ground is small, the yawing correction can be easily performed only by pushing the propelling jack 16 one-sided.

On the other hand, as shown in FIG.
Correction by pushing the pushing jacks 16 at the top and bottom
Even if you try to do it, the shield with the horizontal cross section like this embodiment
In the excavator 1, the propulsion jacks 16 at the upper and lower ends and the excavator
Distance W from the center line c of progress 1 ₂ Is shorter,
Can only exert the moment
The area of the upper and lower sides of the arm 2 is significantly larger than the area of the left and right sides.
Since it is large, the pressure receiving resistance from the ground at the time of pitch rotation is
It is large, and the pitch can only be obtained by pushing the propulsion jack 16 one-sided
Modification is difficult. Therefore, in this embodiment, the pitch
As shown in Fig. 11 (a), the right side front torso 7 and right side
This is done by bending the front side body portion 9.

In this embodiment, the cross-sectional shape of the shield frame 2 is a land track type as shown in FIG. 14 (a), but the present invention is not limited to this and may be a double type as shown in FIG. 14 (b). Well, as shown in Fig. 14 (c), multiple type (3 or more)
However, it may be a rectangular type as shown in FIG. 14 (d), another horizontally long type as shown in FIG. 14 (e), or a rectangular corner portion as shown in FIG. 14 (f). May have a rounded shape, or as shown in FIG. 14 (g), one side of the rectangle may have a curved shape and the corner portion may have a rounded shape. The point is that the cross-sectional shape is longer in the horizontal direction than in the vertical direction.

Further, in the present embodiment, FIG.
As shown in Figure 2, a track frame type shield frame 2
The front torso 3 of the right front torso 7, central front torso 8 and left front torso 9
Although the cutter 6 is provided for each of the above, the present invention is not limited to this, and as shown in FIG. 15 (b), the front body 3 of the shield frame 2 having a double-section cross section is connected to the right front body portion 7 and the center front body portion. 8 and the left front torso 9 may not be provided with a cutter on the central front torso 8 and the cutter 6 may be provided only on the right front torso 7 and the left front torso 9.

Further, as shown in FIG. 15 (c), the front body 3 of the shield frame 2 having a triple-section cross section is divided by the constricted portion to form a right front body portion 7, a central front body portion 8 and a left front body portion. 9 and each of which may be provided with a cutter 6, as shown in FIG.
The front body 3 of the shield frame 2 having a rectangular cross section as shown in FIG.
The right front torso portion 7, the center front torso portion 8 and the left front torso portion 9 may be configured to include a plurality of cutters 6 on the center front torso portion 8. In short, the front body 3 having a laterally long sectional shape is divided into three along the elongated direction thereof, and the cutter 6 is provided on at least the right front body portion 7 and the left front body portion 9, and the central front body portion 8 is formed on the middle body 4. The right front body portion 7 and the left front body portion 9 may be integrally fixed and attached to the middle body 4 so as to be bendable only in the vertical direction.

Further, as shown in FIG. 16, the present invention can be applied to a so-called MF (multi-face) type shield. The MF shield is one in which the cutter 6 of the central front trunk portion 8 and the cutters 6 of the right front trunk portion 7 and the left front trunk portion 9 are arranged in different steps in the front and rear.

Next, an embodiment of a shield machine with a longitudinal cross section will be described with reference to the accompanying drawings.

[0044] Figure 17 is a trihedral view of a vertical length section shield machine 51 according to this embodiment, FIG. 18 is a side view,
19 is a front view, FIG. 20 is a perspective view of the middle body,
21 is a cross-sectional view taken along the line XXI-XXI of FIG. 20, FIG. 22 is a plan view (a view taken along the line XXII-XXII of FIG. 18), and FIG.
FIG. 13 is a sectional view taken along line XIII-XXIII.

As shown in FIG. 17, the shield machine 52 having a vertically long cross section has a shield frame 52 having a vertically long cross section.
Is axially divided into a front body 53, a middle body 54 and a rear body 55,
The front body 53 is composed of an upper front body portion 57, a center front body portion 58, and a lower front body portion 59, each of which is formed into a tubular shape. The upper front body portion 57, the center front body portion 58, and the lower front body portion are formed. Part 59 and cutter 56
And the center front body part 58 and the lower front body part 59 are
4, the upper front torso portion 57 is connected to the middle torso 54 so as to be bendable only in the left and right directions, and the middle torso 54 is connected to the rear torso 55 so as to be vertically and horizontally bendable.

More specifically, as shown in FIGS. 18 to 23, the shield machine 51 having a vertically long cross section has a cylindrical shield frame 52 having a vertically long cross section. Note that FIG.
The cross-sectional shape shown in 4 (a) to 4 (g) may be used. The shield frame 52 has a semicircular portion 52a having an upper and lower cross-sectional shapes.
And a straight line portion 52b in the center, which is a land track type and is axially divided into a front body 53, a middle body 54, and a rear body 55. At the front end portion of the rear body 55, an insertion cylinder portion 60 is formed that has a diameter reduced once. Insertion tube 60
Is inserted into the rear portion of the middle body 54 via the seal member 61 so as to be bendable in the vertical and horizontal directions. As the seal member 61, a middle-breaking seal (a ring-shaped lip seal or the like) in a general middle-breaking shield is used.

The middle body 54 and the rear body 55 are bent vertically and horizontally by the first center folding jack 62. A plurality of the first middle folding jacks 62 are arranged at predetermined intervals in the circumferential direction of the middle body 54, one end of which is supported by a bracket 63 fixed to the middle body 54, and the other end of which is inserted into the insertion cylinder portion 60 of the rear body 55. It is supported by a bracket 64 fixed to. The bending in the left-right and up-down directions by the first center-folded jack 62 may be the V-fold or the X-fold described above. Further, it is also possible to make a bending in which the bending in the left-right direction and the bending in the up-down direction are combined.

Inside the rear body 55, the existing segment 65
Propulsion jack 6 that moves the excavator 51 forward with a reaction force
6 is provided. A plurality of propulsion jacks 66 are provided at predetermined intervals in the circumferential direction of the rear body 55. Also,
An erector (not shown) for assembling the segment 65 is provided inside the rear body 55. The erector is constructed by assembling the segment 65 in the circumferential direction inside the rear body 55 that is stopped by the tail seal 67 (brush seal or the like) provided on the inner peripheral surface of the rear end of the rear body 55 to form a substantial tunnel. It is constructed so that the inner wall is sequentially added.

On the other hand, the front body 53 is composed of an upper front body portion 57, a center front body portion 58, and a lower front body portion 59, each of which is formed in a cylindrical shape. The upper front torso 57 includes a semi-cylindrical member 68.
And a flat plate member 69 are formed in a cylindrical shape, and the central front body portion 58
Is made up of a square tubular member 70 whose lower side is open, and the lower front torso portion 59 is made up of a semi-cylindrical member 68. Then, as shown in FIG. 20, the central front torso portion 58 and the lower front torso portion 59 are integrally fixed to the middle torso 54, and the upper front torso portion 57 is provided on the upper side thereof only in the left-right direction with respect to the middle torso 54. The plate member 69 of the upper front torso portion 57 is attached so as to be bendable, and is in contact with the upper surface 71 of the rectangular tubular member 70 of the central front torso portion 58.

Inside the upper front body portion 57, the center front body portion 58, and the lower front body portion 59, as shown in FIGS. 18 to 23, partition walls 72 for partitioning the inside into front and rear are provided.
The partition walls 72 of the central front body portion 58 and the lower front body portion 59 are integrally formed. Each partition 72 is provided with a cutter 56 that excavates a face. The cutter 56 is rotationally driven by a drive motor (not shown). As shown in FIG. 20, an upper front torso portion 57 is provided on an upper portion of the front surface of the middle torso 54.
An insertion cylinder portion 73 for mounting the is provided. The insertion cylinder portion 73 is formed to be slightly smaller than the upper front body portion 57, and includes a semi-cylindrical member 74 and a flat plate member 75.

The upper front torso portion 57 is fitted into the insertion tube portion 73 via a seal member 76 so as to be bendable only in the left-right direction. At this time, as shown in FIG. 21, the flat plate member 69 of the upper front torso portion 57 is interposed between the flat plate member 75 of the insertion tubular portion 73 and the upper surface 71 of the square tubular member 70 of the central front torso portion 58. . As the seal member 76, a middle broken seal (a ring-shaped lip seal or the like) in a general middle broken shield is used. Then, on the inner surface of the flat plate member 69 of the upper front torso portion 57, a convex portion 77 serving as a fulcrum at the time of center bending is provided.

The convex portion 77 is the flat plate member 6 of the upper front body portion 57.
It is provided at a position separated by a predetermined distance L from the rear end of the lever 9, and when the upper front torso portion 57 tries to open upward with the convex portion 77 as a fulcrum, as shown by an imaginary line 78 in FIG. By the action, the flat plate member 69 of the upper front torso portion 57 is pressed against the upper surface 71 of the rectangular tube member 70 of the central front torso portion 58 to prevent the opening thereof. This convex portion 77 is provided on the upper front body portion 5.
The flat plate member 69 of No. 7 may be formed not only in the mountain range shape in the vertical direction but also intermittently at a predetermined interval.

The convex portion 77 is provided so as to be connected not only to the inner surface of the flat plate member 69 of the upper front torso portion 57 but also to the inner surface of the semi-cylindrical member 68. The convex portion 77 provided on the inner surface of the semi-cylindrical member 68 has a shape similar to that of an ordinary middle folding shield, and allows middle bending in the left-right direction with respect to the middle body 54 of the upper front body portion 57. It is formed so as to slide on the surface of the insertion tube portion 73 when it is bent in the middle. The convex portion 7
7 may be provided on the outer peripheral surface of the insertion tube portion 73 instead of the inner peripheral surface of the upper front body portion 57 as in the present embodiment.
Further, in FIG. 20, 79 is a seal line of the upper front torso portion 57, and 80 is a seal line of the rear torso 55.

The upper front torso part 57 and the middle torso 54 are bent only in the left-right direction by the second center folding jack 81.
At this time, the flat plate member 69 of the upper front torso portion 57 is slidably contacted with the upper surface 71 of the square tubular member 70 of the central front torso portion 58 to guide the bending in the left-right direction, and at the same time, the lever of the convex portion 77 shown in FIG. The action suppresses the upward opening. A plurality of the second middle folding jacks 81 are arranged at predetermined intervals in the circumferential direction of the upper front body portion 57, one end of which is supported by a bracket 82 fixed to the front body portion 57, and the other end of which the middle body 54 is inserted. It is supported by a bracket 83 fixed to the tubular portion 73.
The bending in the left-right direction may be the V-fold or the X-fold described above.

As shown in FIG. 18, a screw conveyor 84 is provided on the partition wall 72 of the lower front body portion 59. The earth and sand intake 85 of the screw conveyor 84 is shown in FIG.
As shown in FIG. 9, it is arranged under the partition wall 72,
A cutter chamber 86 integrally formed in front of each partition wall 72
In the (soil intake chamber), the sediment accumulated below due to the action of gravity is taken in. Further, since the lower front torso portion 59 and the central front torso portion 58 are integrated with the middle torso 54, a middle folding jack or the like is unnecessary, and the screw conveyor 8 is provided inside thereof.
A sufficient space for installing 4 can be secured.

The operation of the present embodiment having the above configuration will be described.

According to this embodiment, since the lower front torso portion 59 and the central front torso portion 58 are fixed to the middle torso 54, the upper front torso portion 57 above them is fixed to the central front torso portion. 54
With respect to it will be bent only in the left-right direction. In this manner, the upper front torso 57 has the central front torso 58 that is not bent below and bends only in the left-right direction.
It is possible to simplify the seal structure of the connection portion with the middle body 54. Since this point is the same as the previous embodiment, the description is omitted.

Further, since the middle body 54 and the rear body 55 are flexibly connected in the vertical and horizontal directions, the middle bending angle of the middle body 54 and the rear body 55 should be the center bending angle which matches the construction plan line. By this, a predetermined curve excavation can be performed. Then, when it deviates from the planned line, the upper front body portion 57 is connected to the middle body 54 so as to be bendable only in the left-right direction.
By adjusting the lateral bending angle in the left-right direction with respect to the inner trunk 54, the attitude control (roll control, etc.) of the excavator 51 can be performed, and the deviation from the planned line can be corrected (see FIG. 11).

At this time, if the middle bending angles of the middle body 54 and the rear body 55 are maintained, the rolling correction of the excavator 51 can be performed while maintaining a predetermined curve excavation. This correction is made by bending the upper front torso portion 57 in the left-right direction with respect to the middle torso 54.
Since the seal structure of the connection portion with and can be simplified as described above, there is no problem in durability and reliability of the seal member 76 even if the frequency of correction, that is, the frequency of center bending is high.

Further, the pitching correction of the excavator can be carried out by pushing the propelling jacks 66 at the upper and lower ends (FIG. 1).
3).

Next, another embodiment of the longitudinal shield shield machine will be described with reference to FIG.

FIG. 24 is a three-sided view of the longitudinal shield shield machine 101 according to this embodiment. Since this embodiment has basically the same configuration as the previous embodiment, the same components are denoted by the same reference numerals, the description thereof will be omitted, and only the differences will be described. The difference is that the lower front torso portion 59 is connected to the middle torso 54 so as to be bendable only in the left-right direction. The connection structure is as shown in FIG.

The longitudinal shield shield machine 101 according to this embodiment can achieve the same effects as those of the previous embodiment, and further the upper front body portion 57 and the lower front body portion 5 can be obtained.
By bending 9 in the same direction, yawing correction of the excavator, which is difficult to correct by pushing the propelling jack 16 (see FIG. 10 (a)) easily, can be easily performed (see FIG. 11 (a)).

Next, another embodiment of the longitudinally long section shield machine will be described with reference to FIG.

FIG. 25 is a three-sided view of a longitudinal cross-section shield machine 201 according to this embodiment. Since this embodiment basically has the same configuration as that of the embodiment shown in FIGS. 17 to 23, the same components are denoted by the same reference numerals, the description thereof will be omitted, and only the differences will be described. To do. The difference is that the central front body portion 58 is connected to the middle body 54 so as to be bendable only in the left-right direction. The connection structure is a structure such as the insertion cylinder portion 73 for the upper front torso portion 57 of FIG.

The longitudinal cross-section shield machine 201 according to this embodiment can achieve the same effects as those of the embodiment shown in FIGS. 17 to 23, and the upper front torso 5
A finer roll control can be performed by appropriately bending 7 and the central front torso portion 58 in the left-right direction. Further, it is fixed to the middle body 54 and does not bend, that is, the second center folding jack 81.
Since the screw conveyor 84 can be attached to the lower front torso portion 59 (see FIG. 18) which is unnecessary, the second center folding jack 81 is attached to the screw conveyor 84 in the lower front torso portion 59.
Will not interfere with the installation.

Next, another embodiment of the longitudinally long section shield machine will be described with reference to FIG.

In the shield machine with longitudinal cross section 301 according to the present embodiment, as shown in FIG. 24, a shield frame 62 having a longitudinal cross section is axially arranged in a front body 53 and a middle body 54.
And a rear body 55, and the front body 53 is composed of an upper front body portion 57, a center front body portion 58, and a lower front body portion 59, each of which is formed in a tubular shape. The upper front torso portion 57 and the lower front torso portion 59 are fixed to the torso 54 and connected to the inner torso 54 so as to be bendable only in the left and right directions, so that the torso can be bent in the up and down and left and right directions with respect to the rear torso 55. The connection point is the same as the type shown in FIG.

The difference is that the main cutter 80 is attached to the center front body portion 58.
Is provided, and the main cutter 80 is provided with a swing cutter 81 which is appropriately rotated with the rotation thereof to excavate the regions of the upper front torso 57 and the lower front torso 59. Even with such a modified cross-section shield, by appropriately bending the upper front torso portion 57 and the lower front torso portion 59, the same operational effect as the type shown in FIG. 24 can be exhibited. In addition, for example, FIG.
When the upper front torso portion 57 and the lower front torso portion 59 are bent in the opposite directions as shown in (c), the turning timing of the swing cutter 81 is changed at the stage of FIG. 26 (b) prior to the bending. It is possible to bend smoothly by excavating and excavating.

[0070] Incidentally, the present embodiment can be similarly applied to the lateral length section shield machine.

Next, another embodiment of the shield machine with a vertically long section will be described with reference to FIG.

In the longitudinally long section shield machine 401 according to the present embodiment, as in the type shown in FIG. 24, the longitudinally shaped shield frame 62 is axially arranged in the front body 53 and the middle body 54.
And a rear body 55, and the front body 53 is composed of an upper front body portion 57, a center front body portion 58, and a lower front body portion 59, each of which is formed in a tubular shape. The upper front torso portion 57 and the lower front torso portion 59 are fixed to the torso 54 and connected to the inner torso 54 so as to be bendable only in the left and right directions, so that the torso can be bent in the up and down and left and right directions with respect to the rear torso 55. The connection point is the same as the type shown in FIG.

The difference is that the main cutter 82 is attached to the center front body portion 58.
The main cutter 82 is provided with a swing arm 83 that appropriately rotates in accordance with the rotation and covers the regions of the upper front torso 57 and the lower front torso 59, and the planetary cutter 84 is provided at the tip of the swing arm 83. It is in the point provided. Even with such a free-section shield, by appropriately bending the upper front torso portion 57 and the lower front torso portion 59, the same operational effect as the type shown in FIG. 24 can be exhibited. Also, for example, as shown in FIG.
When the upper front torso portion 57 and the lower front torso portion 59 are bent in the opposite directions as shown in (c), the swing timing of the swing arm 82 is set at the stage of FIG. 27 (b) prior to the bending. It is possible to bend smoothly by shifting and excavating with the planetary cutter 84.

[0074] Incidentally, the present embodiment can be similarly applied to the lateral length section shield machine.

[0075]

As described above, according to the horizontal cross-section shield machine and the vertical cross-section shield machine of the present invention, the seal structure of each copper connecting portion can be simplified and the roll pitch can be achieved while curving. The postures such as can be easily controlled.

[Brief description of drawings]

FIG. 1 is a three-sided view of a shield machine with a horizontally long cross-section according to an embodiment of the present invention, in which (a) is a side view and (b) is a plan view.
(c) is a front view.

FIG. 2 is a plan view of the shield machine with a transverse cross section.

FIG. 3 is a front view of the shield machine with a horizontal cross section.

FIG. 4 is a bottom view of the above-described transversely long section shield machine (see FIG. 2).
IV-IV line arrow view).

5 is a sectional view taken along line VV of FIG.

FIG. 6 is a perspective view of a middle body of the shield machine with the horizontal cross section.

FIG. 7 is a sectional view taken along line VII-VII of FIG.

FIG. 8 is an explanatory diagram showing lateral bending of the middle body and the rear body of the shield machine with the horizontal cross section.

FIG. 9 is an explanatory view showing the vertical bending of the middle body and the rear body of the above-mentioned shield machine with transverse cross section.

FIG. 10 is an explanatory view showing the vertical bending of the left front trunk and the middle trunk of the above-mentioned transversely long section shield machine.

FIG. 11 is an explanatory view showing the posture control of the above-mentioned transverse shield shield machine, FIG. 11 (a) is pitching control, and FIG.
(b) And (c) is an explanatory view showing rolling control.

12A and 12B are explanatory views showing the attitude control of the above-mentioned shield machine with transverse cross section, FIG. 12A is a front view, and FIG. 12B is a side view.

FIG. 13 is an explanatory view showing yawing control of the above-mentioned transversely long section shield machine.

FIG. 14 is an explanatory diagram showing the types of cross sections of the shield frame of the above-described transversely long section shield machine.

FIG. 15 is a front view showing various modified examples of the above-described shield machine with a horizontal cross section.

FIG. 16 is a plan view showing another modified example of the above-described shield machine with a transverse cross section.

FIG. 17 is a three-sided view of a longitudinal cross-section shield machine according to an embodiment of the present invention, in which (a) is a side view and (b) is a plan view.
(c) is a front view.

FIG. 18 is a side view of the shield machine with the vertically long cross section.

FIG. 19 is a front view of the longitudinal cross-section shield machine.

FIG. 20 is a perspective view of a middle body of the shield machine with the longitudinal cross section.

21 is a sectional view taken along line XXI-XXI of FIG.

FIG. 22 is a plan view of the longitudinal cross-section shield machine (FIG. 1).
8 is a view indicated by a line XXII-XXII).

23 is a sectional view taken along line XXIII-XXIII of FIG.

FIG. 24 is a three-sided view of a longitudinal cross-section shield machine according to another embodiment, (a) is a side view, (b) is a plan view, and (c) is a front view.

FIG. 25 is a three-sided view of a longitudinal cross-section shield machine according to another embodiment, (a) is a side view, (b) is a plan view, and (c) is a front view.

FIG. 26 is a front view of a longitudinal cross-section shield machine according to another embodiment.

FIG. 27 is a front view of a longitudinal cross-section shield machine according to another embodiment.

[Explanation of symbols]

1 Horizontal cross-section shield machine 2 shield frame 3 front body 4 middle body 5 rear body 6 cutters 7 Right front torso 8 center front torso 9 Left front torso 51 Vertical cross-section shield machine 52 shield frame 53 front torso 54 Middle body 55 rear torso 56 cutter 57 Upper front torso 58 Central front torso 59 Lower front torso 101 Vertical cross section shield machine

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Toshiaki Okubo 11-1 Kitahama-cho, Chita-shi, Aichi Ishikawajima Harima Heavy Industries Ltd. Aichi factory (72) Inventor Yuji Sakuma 11-11 Kitahama-cho, Chita-shi, Aichi Ishikawajima Harima Heavy Industries Co., Ltd. Aichi Factory (72) Inventor Taiji Morita 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Taisei Corporation (72) Inventor Osamu Mochizuki 1-25 Nishishinjuku, Shinjuku-ku, Tokyo No. 1 in Taisei Construction Co., Ltd. (72) Inventor Osamu Watanabe 1-25 Nishishinjuku, Shinjuku-ku, Tokyo No. 1 in Taisei Construction Co., Ltd. (72) Katsuhiko Mizuno 1-chome Nishishinjuku, Shinjuku-ku, Tokyo No. 1 in Taisei Construction Co., Ltd. (72) Inventor Yoshio Abe 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Within Taisei Construction Co., Ltd. (56) Reference JP-A-10-212894 (JP A) No. 2917234 (JP, B2) patent 2902288 (JP, B2) patent 2564734 (JP, B2) (58 ) investigated the field (Int.Cl. ^7, DB name) E21D 9/06 301 E21D 9/08

Claims (8)

(57) [Claims] 1. A shield frame having a horizontally long cross section is divided into a front body, a middle body, and a rear body in the axial direction, and the front body is formed into a cylindrical shape. It is composed of a body and a cutter is provided on at least the right front body and the left front body, the center front body is fixed to the middle body, and the right front body and the left front body are respectively placed above and below the middle body. A shield machine with a horizontally long cross section, which is connected so that it can be bent only in one direction, and the middle body is connected to the rear body so that it can be bent in the vertical and horizontal directions. 2. A shield frame having a vertically long cross-sectional shape is axially divided into a front body, a middle body, and a rear body, and the front body is cylindrically formed in an upper front body portion, a central front body portion, and a lower side, respectively. It consists of a front torso, a cutter is provided on the upper front torso, and a cutter is provided on at least one of the center front torso and the lower front torso, and the center front torso and lower front torso are fixed to the middle torso. The longitudinal shield shield machine is characterized in that the upper front body portion is connected to the middle body so as to be bendable only in the left-right direction, and the middle body is connected to the rear body so as to be bendable in the vertical and horizontal directions. 3. A shield frame having a vertically long cross section is axially divided into a front body, a middle body, and a rear body, and the front body is formed into a cylindrical shape, respectively, an upper front body portion, a central front body portion, and a lower side. It comprises a front torso, a cutter is provided at least on the upper front torso and the lower front torso, the central front torso is fixed to the middle torso, and the upper front torso and the lower front torso are provided on the middle torso. The longitudinal shield shield machine is characterized in that it is connected so that it can be bent only in the left-right direction, and the middle body is connected to the rear body so that it can be bent in the vertical and horizontal directions. 4. A vertically long shield frame is divided into a front body, a middle body, and a rear body in the axial direction, and the front body is cylindrically formed in an upper front body portion, a central front body portion, and a lower side, respectively. A front trunk portion, a cutter is provided on at least one of the upper front trunk portion and the central front trunk portion, and a cutter is provided on the lower front trunk portion, and the lower front trunk portion is fixed to the middle trunk portion and the upper front trunk portion A longitudinally shielded machine with a longitudinal section, characterized in that the front portion and the central front body portion are connected to the middle body so as to be bendable only in the left-right direction, and the middle body is connected to the rear body so as to be bendable in the vertical and horizontal directions. 5. A shield frame having an oblong cross section is divided into a front body, a middle body, and a rear body in the axial direction, and the front body is cylindrically formed in a right front body portion, a center front body portion, and a left front portion, respectively. It is composed of a body and a main cutter is provided on the center front body, and a swing cutter is provided on the main cutter to rotate appropriately to excavate the right front body region and the left front body region. The front torso part was fixed to the middle torso, and the right front torso part and the left front torso part were connected to the middle part so as to be bendable only in the vertical direction, and the middle part was connected to the rear part to be bendable in the vertical and horizontal directions. A horizontal cross-section shield machine. 6. A vertically long shield frame is divided into a front body, a middle body, and a rear body in an axial direction, and the front body is formed into a cylindrical shape, respectively, an upper front body portion, a central front body portion, and a lower side. It is composed of a front body part, a main cutter is provided in the central front body part, and a swing cutter is provided on the main cutter to appropriately rotate with the rotation to excavate the regions of the upper front body part and the lower front body part. , The central front torso is fixed to the middle torso, and the upper front torso and lower front torso are connected to the middle to bend only in the left and right direction, and the middle torso can be bent vertically and horizontally with respect to the rear torso. Longitudinal section shield shield machine characterized by being connected to. 7. A shield frame having a laterally elongated cross section is axially divided into a front body, a middle body and a rear body, and the front body is cylindrically formed in a right front body portion, a center front body portion and a left front portion, respectively. It is composed of a trunk and a main cutter is provided in the center front trunk, and a swing arm is provided on the main cutter to rotate appropriately to excavate the right front trunk and the left front trunk. A planetary cutter is provided at the tip of the arm, the center front body is fixed to the middle body, and the right front body and the left front body are connected to the middle body so that they can be bent only in the vertical direction, and the middle body becomes the rear body. horizontal length section shield machine, characterized in that connected bendably vertically and horizontally against. 8. A longitudinally-sectioned shield frame is axially divided into a front body, a middle body, and a rear body, and the front body is cylindrically formed in an upper front body portion, a central front body portion, and a lower side, respectively. It is composed of a front body part, a main cutter is provided in the central front body part, and a swing arm is provided on the main cutter part for appropriately rotating with the rotation to excavate the regions of the upper front body part and the lower front body part. , A planetary cutter is attached to the tip of the swing arm, the central front body is fixed to the middle body, and the upper front body and the lower front body are connected to the middle body so that they can be bent only in the left-right direction. Longitudinal cross-section shield excavator, which is connected to the rear body so that it can be bent vertically and horizontally.