JP3120102B2 - Segment assembly equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shield assembling machine segment assembling apparatus. More particularly, the present invention relates to a segment assembling apparatus used in a shield excavator capable of handling a sharp curve.

[0002]

2. Description of the Related Art Conventionally, in a shield method, a segment assembling apparatus generally has an integral structure mounted on an excavator body having a cutter, but a segment assembling apparatus which is separated and independent behind the excavator body. An example of a shield machine consisting of:

The segment assembling apparatus separated and independent from the shield machine needs to be moved forward by some means after the segment assembling is completed.

In recent years, many high-rise buildings have been constructed in cities. As a result, many foundations of the building have been buried deep underground. Furthermore, with the spread of the shield method, many subways are being constructed. These are obstacles when constructing a new tunnel by the shield method.
For this reason, when constructing a new tunnel, it is necessary to set a route avoiding such obstacles, so that the route must have many sharply curved portions.

In order to cope with such a situation, the present applicant has already developed a shield excavator body having a bent part, which can be applied to the construction of a tunnel having a sharp curve, and has also commercialized it.

However, if an attempt is made to adopt a separate and independent segment assembling apparatus in the shield excavator, since the inside of the tunnel is bent at a sharp curvature, it is necessary to lay guides such as rails for moving the segment assembling apparatus forward. It is difficult, and it takes time to correct the position and posture of the device after the forward movement, which causes a problem that the work efficiency is reduced.

[0007] As a prior art relating to these, there is, for example, JP-A-3-90799.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has been made in consideration of the above problems. It is intended to provide an assembling device.

[0009]

SUMMARY OF THE INVENTION A segment assembling apparatus of the present invention is a segment assembling apparatus which is configured independently of a shield machine, and includes a front leg structure,
A rear leg structure, a connecting member connected to the two leg structures, an intermediate leg structure disposed outside the connecting member, and a segment set connected to the front leg structure The front leg structure, the rear leg structure, and the intermediate leg structure have leg portions that are extendable and contractible, and a connecting portion between the front leg structure and the connecting member is The tilting is possible, the connecting portion of the rear leg structure and the connecting member is also tiltable, the intermediate leg structure and the connecting member are mutually movable,
The connecting member is swingable with respect to the intermediate leg structure, and a connecting portion between the front leg structure and the segment assembling means is tiltable.

[0010] In the segment assembling apparatus of the present invention, it is preferable that the segment assembling means is provided with a fine adjustment mechanism of a segment mounting position.

[0011]

In the segment assembling apparatus of the present invention, the legs of the front leg structure, the rear leg structure, and the intermediate leg structure are extendable and contractable, and the connecting portion between the front leg structure and the connecting member is provided. Is tiltable, the connecting portion between the rear leg structure and the connecting member is also tiltable, and the intermediate leg structure and the connecting member are movable with each other, and the intermediate leg structure is Since the connecting portion between the front leg structure and the segment assembling means can be tilted with respect to the connecting member, each leg structure can be tilted by appropriately adjusting the tilt angle. A desired posture can be taken with respect to the inner surface of the segment. Also, the legs of the front leg structure and the rear leg structure are grounded on the inner surface of the existing segment, the segment assembling device is set at the initial position, and then the intermediate leg structure is moved to a predetermined position at the front end of the connecting member. Then, the legs are brought into contact with the inner surface of the existing segment, and then the legs of the front leg structure and the rear leg structure are contracted, and the connecting member is advanced.
When the connecting member reaches a predetermined position, the legs of the front leg structure and the rear leg structure are extended to make contact with the inner surface of the existing segment, and the legs of the intermediate leg structure are contracted. Thus, the unit movement of the segment assembling apparatus is completed.
Hereinafter, by repeating this unit movement, the segment assembling apparatus can move following the curve even in the sharp curve portion of the tunnel. When the segment assembling device reaches a predetermined position due to the movement, the connecting portion of the segment assembling means to the front leg structure is also tilted, and the segment assembling unit is brought into a desired posture with respect to the segment assembling position. Accordingly, the segment assembling means can efficiently assemble the segments even at the sharply curved portion of the tunnel.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on embodiments with reference to the attached drawings, but the present invention is not limited to only such embodiments.

FIG. 1 is a schematic view of one embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, FIG. 3 is a cross-sectional view of a moving mechanism, FIG. FIG. 5 is a detailed view of the connecting portion, FIG. 6 is a mounting view of the rotary actuator, and FIG. 7 is a mounting view of the forward actuator. In the figure,
1 is a front leg structure, 2 is a rear leg structure, 3 is a connecting member,
4 is an intermediate leg structure, 5 is a segment assembling means, 6 is a shield machine body, and S is a segment.

In one embodiment of the present invention shown in FIGS. 1-7, the segment assembling apparatus includes a front leg structure 1;
A rear leg structure 2, a connecting member 3 connecting the two leg structures 1 and 2, an intermediate leg structure 4 provided outside the connecting member 3, and a front leg structure 1; And a segment assembling means 5 connected to the segment. here,
The front leg structure 1, the rear leg structure 2, the connecting member 3, and the intermediate leg structure 4 constitute a moving mechanism.

As shown in detail in FIG. 3, the front leg structure 1 is suspended from a front leg structure main body 11 and an outer peripheral portion of the front leg structure main body 11. Legs 12,1
2 and 12. The front leg structure body 11
For example, it is a cylindrical body, and a pair of protrusions 1
1a and 11a are formed point-symmetrically with respect to the center point. Also, the protruding portions 11a, 11a at the rear end thereof
On the opposite side of the part where the
b, 11b are formed (see FIG. 1). The projecting portions 11a, 11a are provided with
Are linked. Further, a front end 3a of a connecting member 3, also described later, is connected to the protruding portions 11b, 11b. The leg 12 includes an outer member 121, an inner member 122 slidably fitted into the outer member 121, and a foot member 123 attached to a tip of the inner member 122. The hydraulic cylinder mechanism 13 is provided inside the inner member 122. A base plate 132 provided below the hydraulic cylinder 131 of the hydraulic cylinder mechanism 13 is fixed to a substantially intermediate portion inside the outer member 121. On the other hand, the distal end of the piston rod 133 is connected to a connecting member 122b provided on the base plate 122a of the inner member 122 by pin bonding. With such a configuration, the inner member 122 can be expanded and contracted by the expansion and contraction of the pinton rod 133, and the attachment of the foot member 123 to the distal end of the inner member 122 is performed, for example, at the center of the foot plate 123a. Plate material 12 suspended from
3b is sandwiched between holding members 122c, 122c which are suspended from the base plate 122a of the inner member 122, and these are joined by pins. This allows
The foot member 123 can be grounded at an angle corresponding to the curvature of the inner surface of the segment S. However, if the tilt angle of the foot member 123 is too large, it will interfere with the grounding to the inner surface of the segment S. Therefore, a stopper (not shown) for limiting the tilt angle is provided at this pin joint. Here, the foot plate 123
a is large enough to stably contact the inner surface of the existing segment S.

The rear leg structure 2 is configured similarly to the front leg structure 1. That is, the rear leg structure body 21
And legs 22, 22, 22, which are suspended from the outer periphery of the rear leg structure body 21, and a hydraulic cylinder mechanism 23, which expands and contracts the legs 22. However, the rear leg structure main body 21 has the protrusion 1 of the front leg structure main body 11.
No protrusions corresponding to 1a and 11a are formed.

The connecting member 3 is, for example, a leg structure main body 1.
It is a cylindrical body having an outer diameter smaller than the inner diameter of 1, 21 (see FIG. 3). The front end 3a is connected to the protrusion 11b formed on the main body 11 of the front leg structure 1, and the rear end 3b is connected to the protrusion 21a formed on the main body 21 of the rear leg structure 2. Are linked. FIG. 5 shows an example of a structure of a connecting portion between the rear end portion 3b and the protruding portion 21b of the rear leg structure 2. In the example shown in FIG. 5, a mounting seat 24 is provided on the projecting portion 21 a of the rear leg structure body 21, and a boss 31 provided on the rear end 3 b of the connecting member 3 is provided on the mounting seat 24. I have. On the other hand, a tilting actuator 25 is mounted on the upper end 24a of the mounting seat 24. The rotating shaft 2 of the tilting actuator 25
5a is fitted to the boss 31 so that its axis coincides. The rotary shaft 25a is provided with a key 25b. Thereby, the rotational force of the rotating shaft 25a is transmitted to the boss 31. Here, since the boss 31 is mounted on the mounting seat 24 via the bearing 32, the boss 31 rotates when a rotational force is transmitted. Note that an electric motor or a hydraulic motor is used as the tilting actuator 25.

The connection between the leg structures 1 and 2 and the connecting member 3 is made as described above, and the projections 11b, 11b, 21a and 21a are arranged point-symmetrically as described above. By actuating the tilting actuator provided on the connecting portion, the tilting motion of the leg structure 1 and the connecting member 3 or the tilting motion of the leg structure 2 and the connecting member 3 can be performed. Therefore, the leg structures 1 and 2 can freely take a desired posture with respect to the inner surface of the segment S. Here, this tilting motion is referred to as tilting.

The intermediate leg structure 4 includes an intermediate leg structure main body 41, legs 42, 42, 42 suspended from an outer peripheral portion of the intermediate leg structure main body 41, and legs 42, 42. , 42
Forward actuators 43 and 4 disposed between
3, 43 are main components (see FIG. 3). Here, the leg 42 has the same configuration as the leg 12.

The intermediate leg structure main body 41 is a cylindrical body having an inner diameter slightly larger than the outer diameter of the connecting member 3.
A ring 44 having an arcuate concave portion is provided at a predetermined position on the inner surface of the intermediate leg structure main body 41. The arc-shaped concave portion is slidably fitted to a spherical bush 34 provided on the outer peripheral surface of the slide ring 33 of the connecting member 3 corresponding to the arrangement position of the ring member 44. The intermediate leg structure body 41 and the slide ring 33
Is relatively rotatable by the rotation actuator 35. The rotation actuator 35 includes, for example, an actuator having a cylinder 351 and a piston rod 352 as main components (see FIG. 6).
Here, the cylinder 351 is held by holding means 36, 36 provided on the front portion 33a of the outer peripheral surface of the slide ring 33 by appropriate means, and the tip of the piston rod 352 is attached to the tip 41a of the intermediate leg structure body 41. If the lug 45 provided is joined with a pin, the relative rotational movement described above is secured by the expansion and contraction of the piston rod 352. The relative rotational movement makes it possible to correct the rolling of the assembling means 5 described later.

The forward actuator 43 includes a cylinder 4
31 and the piston rod 432 are main components.
The cylinder 431 is held by appropriate means by support members 46, 46 arranged at predetermined positions on the outer peripheral surface of the intermediate leg structure main body 41. On the other hand, the piston rod 432
As shown in FIG. 7, the supporting member 3
A receiving member 433 slidably fitted to the spherical bush 39 mounted on the pin member 38 held by the members 7 and 37 is provided. Piston rod 432
The tip 432a of the support member 37,
Since it is held by 37, the forward actuator 43 swings in the direction of the arrow in the figure following the rotational movement of the rotary actuator 43. In a state where the legs 42, 42, 42 of the intermediate leg structure 4 are contracted, by extending the piston rod 432 of the forward actuator 43, the intermediate leg structure 4 moves along the connecting member 3. , And moves to a predetermined position in front of it. In order to prevent unnecessary rotation of the intermediate leg structure 4 during this movement, a guide groove G is formed in the longitudinal direction of the connecting member 3, and a slide provided in the guide groove G on the inner surface of the slide ring 33. The key 331 is fitted.

As shown in FIG. 4, the assembling means 5 includes a support 51, a first driving mechanism 52, and a second driving mechanism 53.
And the assembling mechanism 54 as main components.

The support 51 is, for example, a cylindrical body. The rear end 51a of the support body 51 is formed with the protruding portions 11a, 11a of the front leg structure main body 11 and the protruding portions 11b, 11b.
b is connected by the same configuration as that used for the connecting portion of the connecting member 3 with the front end 3a. With such a configuration, the support body 51 can also be tilted.

The first drive mechanism 52 comprises a slide member 521 slidably fitted to the support 51 and a drive actuator 55. The driving actuator 55 includes a piston rod 551, a cylinder 552, and a motor 553 for driving the piston rod 551. The tip of the piston rod 551 is connected to the end 521a of the slide member 521 by appropriate means. This piston rod 551 may be covered by a bellows for protection from dust in the tunnel. The motor 553 is fixed to a lower portion of the rear portion 51a of the support 51 by appropriate means. Thereby, the slide member 521
With the advance and retreat of the piston rod 551,
Can move forward and backward.

The second drive mechanism 53 includes a slide member 52
1 comprises a body member 531 and a driving actuator 56 which are arranged at a predetermined interval on the outer peripheral portion. At a predetermined position on the inner surface of the body member 531, a ring member 532 having an arc-shaped recess formed on the inner surface is provided. A spherical bush 522 is provided at a position corresponding to the ring member 532 on the outer peripheral surface of the slide member 521. The ring member 532 and the spherical bush 522 are slidably fitted. The driving actuator 56 includes a piston rod 561, a cylinder 562, and a motor 563 for driving the piston rod 561. The tip of the piston rod 561 is pin-joined to a lug 533 provided on the outer peripheral surface of the body member 531. This piston rod 561 may be covered by a bellows for protection from dust in the tunnel. The motor 563 is fixed to an upper portion of the end 521a of the slide member 521 by appropriate means. With such a configuration, as the piston rod 561 advances and retracts, the body member 531
Can tilt.

The assembly mechanism 54 includes a rotating drum 541 and a motor 57 for rotating the rotating drum 541. The motor 57 includes a rear end portion 531a of the body member 531.
Are held by appropriate means. At the rear end 541a of the rotary drum 541, a bearing 58 having a gear 58c formed on the outer periphery is provided. The outer ring 58a and the inner ring 58b of the bearing 58 are mutually rotatable. The outer ring 58a is connected to the rotating drum 5
The inner ring 58b is fixed to the rear end 531a of the body member 531. A gear 572 provided at the tip of a rotating shaft 571 of the motor 57 meshes with the gear 58c. With this configuration, the rotating drum 541 can also rotate with the rotation of the motor 57. Rotating drum 5
A segment assembling member 543 having the same kind of structure as that of the related art is attached to an appropriate position on the outer peripheral surface of the base 41.

Correction of the tilting motion and the rolling of the assembling means 5 by the above-mentioned rotation actuator 35, the first driving mechanism 52 and the second driving mechanism 53 allow the assembling means 5 to be moved to a substantially predetermined position by the moving mechanism. Fine adjustment of the position of the segment S set to is possible to bring the segment S into a desired posture with respect to the segment mounting portion.

Since the operation of assembling the segment S to the existing segment S of the other segment assembling means 5 is the same as that of the conventional one, detailed description thereof will be omitted.

Next, the moving operation of the segment assembling apparatus thus configured in the shield tunnel will be described.

Step 1: The legs 12, 22 of the front leg structure 1 and the rear leg structure 2 are extended, and their foot members 12
3, 223 is grounded to the inner surface of the existing segment S. Thereby, the initial position of the segment assembling apparatus is set. At this time, the leg 42 of the intermediate leg structure 4 is in the advanced position.

Step 2: The intermediate leg structure 4 is moved in the direction of the front end 3a of the connecting member 3 by the extension operation of the forward actuator 43.

Step 3: When the intermediate leg structure 4 reaches a predetermined position, the rotation actuator 35 is operated,
The rolling of the intermediate leg structure 4 is corrected to a desired posture.

Step 4: Leg 42 of the intermediate leg structure 4
Is extended, and the foot member 423 contacts the inner surface of the existing segment S.

Step 5: The legs 12, 22 of the front leg structure 1 and the rear leg structure 2 are reduced.

Step 6: The connecting member 3 moves forward by the contraction operation of the forward actuator 43. Thereby,
The front leg structure 1 and the rear leg structure 2 connected to the connecting member 3 also move forward.

Step 7: The tilting actuator 25 provided at the connection between the front leg structure 1 and the rear leg structure 2 and the connecting member 3 is operated, and the front leg structure 1 and the rear leg structure are operated. The body 2 is in a desired posture.

Step 8: The rolling actuator 35 connected to the connecting member 3 and the intermediate leg structure 4 is operated to correct the rolling.

Step 9: The legs 12, 22 of the front leg structure 1 and the rear leg structure 2 are extended, and their leg members 123,
223 is grounded to the inner surface of the segment S.

Thus, the unit movement of the segment assembling apparatus is completed. Hereinafter, by repeating this unit movement, the segment assembling apparatus can also move following the movement of the shield machine body 6.

[0040]

As described above, according to the present invention, the segment assembling apparatus can move forward while taking a desired posture with respect to the inner surface of the segment, and the segment assembling means can be moved with respect to the segment mounting position. In this case, the segments can be efficiently assembled even in the construction of a sharp curve.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of one embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view of a moving mechanism unit.

FIG. 4 is a sectional view of a segment assembling means.

FIG. 5 is a detailed view of a connecting portion.

FIG. 6 is a mounting diagram of a rotation actuator.

FIG. 7 is a mounting view of a forward actuator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front leg structure 2 Rear leg structure 3 Connecting member 4 Intermediate leg structure 5 Segment assembling means 6 Shield excavator body S segment

Claims (2)

(57) [Claims] 1. A segment assembling apparatus configured to be separated and independent from a shield machine, comprising: a front leg structure, a rear leg structure, and a connecting member connected to the both leg structures. An intermediate leg structure provided outside the connecting member, and a segment assembling means connected to the front leg structure, wherein the front leg structure, the rear leg structure And a leg portion of the intermediate leg structure is extendable and contractible, and a connecting portion between the front leg structure and the connecting member is tiltable, and a connecting portion between the rear leg structure and the connecting member is also provided. Is tiltable, the intermediate leg structure and the connecting member are movable with each other, the connecting member is swingable with respect to the intermediate leg structure, Connection between the front leg structure and the segment assembling means Is a tiltable segment assembling apparatus. 2. The segment assembling apparatus according to claim 1, wherein said segment assembling means is provided with a fine adjustment mechanism of a segment mounting position.