JP4314882B2 - Segment assembly equipment for shield machine - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a segment assembling apparatus for a shield machine, and more particularly to a segment assembling apparatus for a shield machine provided with a mechanism for pressing an existing segment adjacent to the assembly position of the segment when the segment is assembled. .
[0002]
[Prior art]
The assembly of the segments in the shield machine is performed by sequentially joining a plurality of segments for each ring. In the assembly process, when the last segment of the plurality of segments is assembled, a segment adjacent to the assembly position of the segment (hereinafter referred to as an adjacent segment) hangs down by its own weight, and the assembly space may be narrowed. For this reason, when trying to assemble the last segment as it is, the adjacent segment may interfere with the last segment and may be damaged.
[0003]
Therefore, a segment assembling apparatus provided with a device for pressing adjacent segments outward in the shield radial direction is used.
[0004]
Conventionally, as a device for pressing an adjacent segment, there has been a segment push-up device provided with a push-up jack for pushing up an adjacent segment inside the shield frame (see, for example, Patent Document 1).
[0005]
According to this segment push-up device, by pushing up the adjacent segment to the outside of the shield diameter, the assembly space of the last segment can be secured and the breakage of the segment can be prevented.
[0006]
[Patent Document 1]
Japanese Patent Publication No. 6-31557 [0007]
[Problems to be solved by the invention]
However, since the above-described segment push-up device fixes the push-up jack to the shield frame, the push-up position in the shield circumferential direction is fixed, and this corresponds to the case where the assembly position of the last assembled segment is changed. There was a problem that I couldn't.
[0008]
The segment push-up device is also structurally strict because it is supported by the shield frame in a cantilever state, and there is a problem that it is difficult to stably press adjacent segments.
[0009]
Therefore, the present invention has been devised to solve the above-described problems, and the object of the present invention is to make shield digging that can stably press a segment adjacent to the assembly position regardless of the assembly position of the segment. It is to provide a machine segment assembling apparatus.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a swivel ring that swivels in a circumferential direction in a shield machine, and a radial movement member that is provided on the swivel ring via a pair of support brackets and moves in a shield radial direction. In the segment assembling apparatus provided with a segment gripping member for gripping a segment to be assembled provided on the radial moving member, the support bracket is provided with an axially moving member movable in the shield axial direction. A pair of pressing members that move outward in the radial direction of the shield are provided to press the existing segment adjacent to the assembly position of the K segment to be assembled last, and the existing members on the extension line are moved in the opposite direction to the pressing member. A pair of support members that contact the segment and transmit the pressing load to the segment are provided. Abutting portions that abut the inner peripheral surface of the segment are bent at a predetermined length so as to face each other, and an abutting portion that abuts the inner peripheral surface of the segment is formed at the tip of the support member. The pressing member and the support member each have a body portion on the base end side, and the guide member for slidably supporting the body portion of the support member is provided on the axial movement member. A guide hole for slidably supporting the trunk portion of the pressing member is provided in the trunk portion of the supporting member, and an expansion / contraction jack is provided between the pressing member and the supporting member, and the trunk portion of the pressing member and the supporting member are provided. A stopper for fixing the pressing member and the supporting member to the guide tube by sandwiching the guide tube from both ends when the pressing member and the supporting member are contracted radially inward by the expansion and contraction jack is formed on the body portion. Features that you are To.
[0011]
According to the said structure, the pressing position of the segment by a pressing member can be moved to the shield circumferential direction by providing in the turning ring the pressing member which presses the segment adjacent to the assembly position of a segment. In addition, by providing the support member, the pressing member is not cantilevered, and the load when pushing up the segment can be supported by linearly transmitting to the existing segment via the support member. Can be pressed.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
[0014]
First, the structure of the segment assembly apparatus of the shield machine according to the present embodiment will be described.
[0015]
As shown in FIG. 1, the segment assembling apparatus 1 is provided at the rear part of the shield machine 2 and performs assembly by sequentially joining a plurality of segments 3 for each ring. In general, as shown in FIGS. 2 and 3, three types of segments 3 having different circumferential lengths are used. First, among the three types of segments, a plurality of segments (hereinafter referred to as A segments) 3a having the longest circumferential length are assembled from the bottom (three in the present embodiment), and at the upper ends of both ends, they are more circumferential than A segments 3a. Assembling one ring by assembling each segment 3b having a short length in the direction (hereinafter referred to as B segment) and finally assembling a segment 3k having the shortest length in the circumferential direction (referred to as K segment) between these two B segments 3b. Is completed.
[0016]
As shown in FIGS. 1 and 3, the segment assembling apparatus 1 includes a swiveling ring 4 that revolves in the circumferential direction in the shield machine 2, and a radial moving member that is provided on the revolving ring 4 and moves in the shield radial direction. 5 and a segment gripping member 6 that is provided on the radial moving member 5 and grips the segment 3 to be assembled.
[0017]
The swivel ring 4 is coaxially disposed inside the shield frame 7 with a predetermined interval from the inner peripheral surface thereof. The outer periphery of the swivel ring 4 is rotatably supported by a plurality of support rollers 8 attached to the shield frame 7, and is rotated by a drive motor (not shown). The swivel ring 4 is provided with a pair of support beams 9 via support brackets 11. The support beam 9 extends rearward in the shield axial direction, and a guide tube 32 that supports the radial moving member 5 is attached to the rear end thereof. The support beam 9 and the guide cylinder 32 rotate together with the turning ring 4.
[0018]
The radial direction moving member 5 includes a pair of guide rods 31 slidably inserted into the guide cylinders 32, an arch-shaped connecting member 12 provided so as to bridge the guide rods 31, and a connecting member 12. The telescopic jack 14 is provided between the guide cylinder 32 and moved in the shield radial direction.
[0019]
The segment gripping member 6 is supported by the intermediate portion of the connecting member 12 so as to be movable in the shield axis direction. An extendable jack (not shown) that extends and contracts in the axial direction is installed between the segment gripping member 6 and the connecting member 12. Due to the expansion and contraction of the expansion / contraction jack, the segment gripping member 6 reciprocates between a segment receiving position for receiving the segment 3 from a segment transport carriage (not shown) and a segment assembly position in front of the segment receiving position.
[0020]
As shown in FIG. 3, the segment gripping member 6 is supported so as to be movable in the shield circumferential direction with respect to the connecting member 12. Between the segment gripping member 6 and the connecting member 12, a telescopic jack 15 that extends and contracts substantially along the circumferential direction of the shield is installed. The segment gripping member 6 is moved by the expansion / contraction of the expansion / contraction jack 15, and when the segment 3 is attached, a fine turning is performed to align the segment 3 with the assembly position.
[0021]
By the way, as shown in FIG.1, FIG2 and FIG.4, the turning ring 4 of the segment assembly apparatus 1 which concerns on this Embodiment is provided with the axial direction movement member 16 which can move to a shield axial direction. The axially moving member 16 includes a pressing member 17 that moves outward in the radial direction of the shield to press the existing B segment 3b adjacent to the assembly position of the K segment 3k to be assembled last, and a direction opposite to the pressing member 17 And a support member 18 that contacts the existing A segment 3a on the extension line and transmits a load generated by pressing by the pressing member 17 to the A segment 3a.
[0022]
The axial movement member 16 includes a pair of guide cylinders 19 that are supported on the inner side surfaces of the pair of support beams 9 so as to be movable along the shield axial direction. The guide tube 19 supports the support member 18 and the pressing member 17 so as to be movable substantially along the shield radial direction.
[0023]
Specifically, a guide groove portion 21 extending in the shield axial direction is formed on the shield inner surface of the support beam 9, and a protruding portion 22 formed in the guide tube 19 is inserted into the guide groove portion 21. The guide cylinder 19 is supported. A roller (not shown) or the like is interposed between the guide groove portion 21 and the protruding portion 22, and the guide tube 19 moves to the support beam 9 by moving the protruding portion 22 in the guide groove portion 21. In contrast, it moves.
[0024]
A locking groove portion 23 extending in the vertical direction is formed at both ends in the width direction of the guide groove portion 21 (upper and lower ends in FIG. 2), and the width direction of the protruding portion 22 at a position corresponding to the locking groove portion 23 is formed. Locking protrusions 24 that are inserted into the locking grooves 23 are formed at both ends. Since the locking projection 24 is restricted from moving in the locking groove 23 except in the shield axial direction, the guide tube 19 can be prevented from being detached from the support beam 9.
[0025]
An extendable jack 38 for moving the guide cylinder 19 in the shield axis direction is installed between the guide cylinder 19 and the turning ring 4. The expansion / contraction of the expansion / contraction jack 38 causes the axial movement member 16, the pressing member 17, and the support member 18 to reciprocate between the segment assembly position and the retracted position in front of the segment assembly position.
[0026]
The pressing member 17 includes a rod-like body portion 25 located on the proximal end side (support beam 9 side) and a contact portion 26 located on the distal end side (radially outer side) to press the B segment 3b. . On the other hand, the support member 18 includes a rod-like body portion 27 located on the proximal end side thereof, and a contact portion 28 located on the distal end side and pressing the A segment 3a.
[0027]
A guide hole 29 extending in the longitudinal direction is formed in the body portion 27 of the support member 18, and the body portion 25 of the pressing member 17 is slidably inserted into the guide hole 29. That is, the trunk portion 27 of the support member 18 serves as a guide cylinder, the trunk portion 25 of the pressing member 17 serves as a guide rod, and the pressing member 17 and the supporting member 18 are connected coaxially.
[0028]
The body 27 of the support member 18 is slidably inserted into the pair of guide cylinders 19 attached to the support beams 9. Since the body portion 25 of the pressing member 17 is inserted into the body portion 27 of the support member 18, the pressing member 17 and the support member 18 are integrally supported by the support beam 9 through the guide tube 19. It will be. The integral pressing member 17 and the supporting member 18 that are respectively supported by the guide cylinders 19 are arranged in parallel to each other.
[0029]
An expansion / contraction jack 33 is installed between the pressing member 17 and the support member 18, and the expansion / contraction of the expansion / contraction jack 33 causes the pressing member 17 and the support member 18 to move relative to each other to change the entire length thereof. When the expansion jack 33 is extended most, the contact portion 26 of the pressing member 17 presses the B segment 3b, and the contact portion 28 of the support member 18 presses the A segment 3a.
[0030]
A flange-like stopper 34 is formed on the body 25 of the pressing member 17 so as to protrude outward from the inner peripheral surface of the guide cylinder 19. On the other hand, a flange-like stopper 35 protruding outward from the inner peripheral surface of the guide tube 19 is also formed on the body portion 27 of the support member 18.
[0031]
As shown in FIG. 5, these stoppers 34 and 35 sandwich the guide tube 19 from both ends when the telescopic jack 33 is most retracted (when the total length of the pressing member 17 and the support member 18 is the shortest). The pressing member 17 and the support member 18 are fixed to the guide tube 19.
[0032]
As shown in FIG. 2, the abutting portion 26 of the pressing member 17 is formed to be bent inward by a predetermined length so that the tip thereof faces the abutting portion 26 of the adjacent pressing member 17. The bending length is set so that the distance between the contact portions 26 is longer than the shield circumferential direction length of the K segment 3k. The contact surface 36 of the contact portion 26 is curved with the same curvature as the inner peripheral surface of the segment 3. A buffer material (not shown) made of rubber, resin or the like is provided on the surface of the contact surface 36.
[0033]
On the other hand, the contact portion 28 of the support member 18 is formed such that the tip thereof is bent toward the contact portion 28 of the adjacent support member 18 and the contact portions 28 are connected in an arch shape. The contact surface 37 of the connected contact portion 28 is curved with the same curvature as the inner peripheral surface of the segment 3. A buffer material (not shown) made of rubber, resin or the like is provided on the surface of the contact surface 37.
[0034]
Next, the operation of this embodiment will be described while explaining the assembly process of the segment 3.
[0035]
When assembling the segment 3, first, the telescopic jack 38 is retracted to move the axially moving member 16, the pressing member 17 and the support member 18 to the retracted position, and the telescopic jack 33 is retracted to The total length together with the support member 18 is made the shortest. At this time, since the stopper 34 of the pressing member 17 and the stopper 35 of the supporting member 18 sandwich the guide cylinder 19 from both ends thereof, the pressing member 17 and the supporting member 18 are interposed via the guide cylinder 19 and the supporting beam 9. It will be fixed to the swivel ring 4.
[0036]
In this state, the swiveling ring 4 is rotated and the radial direction moving member 5 and the segment gripping member 6 are appropriately moved to assemble the A segment 3a and the B segment 3b sequentially from the lower part.
[0037]
At this time, since the pressing member 17 and the supporting member 18 are moved to the retracted position, they do not interfere with the assembled A segment 3a and B segment 3b. Further, since the pressing member 17 and the support member 18 sandwich the guide cylinder 19 from both sides and are fixed to the turning ring 4, the pressing member 17 and the supporting member 18 are not guided even when the turning ring 4 is rotated. Without being displaced from the cylinder 19, it can rotate stably with the rotation of the swivel ring 4.
[0038]
Thereafter, when the assembly of the A segment 3a and the B segment 3b is finished, the K segment 3k is gripped by the segment gripping member 6, the telescopic jack 38 is extended, and the axial movement member 16, the pressing member 17 and the support member 18 are retracted. While moving from the position to the rear segment assembly position, the swiveling ring 4 is rotated so that the gripped K segment 3k is opposed to the upper assembly position.
[0039]
At this time, the pressing member 17 rotates together with the turning ring 4 and is automatically moved to a position facing the B segment 3b adjacent to the assembly position of the K segment 3k.
[0040]
Then, the expansion jack 33 between the pressing member 17 and the support member 18 is extended. At this time, first, since the stopper 34 of the pressing member 17 is in contact with the upper end of the guide cylinder 19, the supporting member 18 is lowered to the lower A segment 3a while the position of the pressing member 17 is fixed. Abut. Here, the position of the support member 18 is fixed. Then, the pressing member 17 rises by taking a reaction force from the A segment 3a via the support member 18 by further extension of the extension jack 33. Then, when the abutting portion 26 of the pressing member 17 abuts on the hanging B segment 3b and pushes up the B segment 3b to a predetermined position, the extension jack 33 stops extending. The expansion / contraction amount of the expansion / contraction jack 33 is set in advance.
[0041]
Then, while moving the radial direction moving member 5 to the outside, the K segment 3k is inserted into the assembly position and assembled while finely turning the segment gripping member 6.
[0042]
At this time, according to the present embodiment, the K segment 3k is assembled after the B segment 3b is pushed up by the pressing member 17 and the sagging is eliminated, so that the segments 3b and 3k do not interfere with each other. Damage can be prevented.
[0043]
In addition, since the bending length of the contact portion 26 is set so that the distance between the contact portions 26 of the pair of pressing members 17 is longer than the shield circumferential direction length of the K segment 3k, The contact part 26 does not interfere.
[0044]
Furthermore, since the contact portion 26 of the pressing member 17 is bent and the contact surface 36 is curved with the same curvature as the inner peripheral surface of the segment 3, the pressing member 17 is in contact with the B segment 3b. , Surface contact. Therefore, the B segment 3b is accurately pushed up to its assembly position without tilting.
[0045]
In the present embodiment, the case where the assembly position of the K segment 3k is located at the top of the shield frame 7 has been described. However, even if the assembly position of the K segment 3k is changed, the segment according to the present invention is used. The assembling apparatus 1 is applicable. That is, in this segment assembling apparatus 1, since the pressing member 17 is provided on the turning ring 4, the shield circumferential position can be freely moved, and the B segment 3b is pressed at any angle in the shield circumferential direction. It becomes possible to do.
[0046]
Further, since the pressing member 17 and the segment gripping member 6 rotate in synchronization, the pressing member 17 always abuts on the B segment 3b at a fixed position with respect to the assembly position of the K segment 3k. Therefore, the pressing member 17 can evenly push up the B segments 3b on both sides, and can securely secure the assembly space of the K segment 3k.
[0047]
Here, in order to rotate the pressing member 17 in synchronization with the segment gripping member 6, it is conceivable to attach the pressing member 17 directly to the segment gripping member 6. However, since the segment gripping member 6 moves in the shield radial direction together with the radial direction moving member 5 when the K segment 3k is attached, the K segment 3k cannot be assembled while pressing the B segment 3b. Therefore, the configuration of the present invention in which the pressing member 17 is provided on the turning ring 4 that is not affected by the movement of the radial moving member 5 is excellent.
[0048]
According to the present embodiment, since the load due to the pressing of the pressing member 17 can be transmitted linearly to the A segment 3a via the support member 18, the B segment 3b can be pressed stably. Further, the pressing member 17 is not cantilevered, and the moment force applied to the swiveling ring 4 that supports the pressing member 17 can be reduced, and a structurally stable state can be achieved.
[0049]
In the above embodiment, when the last K segment 3k is assembled, the B segment 3b is pressed by the pressing member 17, but the pressing is performed only when the last K segment 3k is assembled. It is not a thing. For example, if the circumferential length of the A segment 3a or the B segment 3b is shorter than the distance between the contact portions 26 of the pressing member 17, even when the A segment 3a or B segment 3b is assembled, The assembly can be performed while pressing the adjacent A segment 3a or B segment 3b.
[0050]
Further, in the above embodiment, the pressing member 17 and the support member 18 are integrally supported by the axial movement member 16, but the pressing member 17 and the support member 18 are individually supported by the axial movement member 16. It may be configured to move each.
[0051]
Furthermore, in the above embodiment, the telescopic jack 38 is retracted to move the axial direction moving member 16, the pressing member 17, and the supporting member 18 to the retracted position. However, the moving distance of the pressing member 17 is increased. If the pressing member 17 is retracted to a position where it does not interfere with the A segment 3a or B segment 3b gripped during assembly (inside the shield radial direction), the pressing member 17 and the axial direction moving member 16 are not interposed. The support member 18 may be attached to the support beam 9.
[0052]
【The invention's effect】
In short, according to the present invention, it is possible to stably press the segment adjacent to the assembly position regardless of the assembly position of the segment.
[Brief description of the drawings]
FIG. 1 is a side sectional view showing a preferred embodiment of a segment assembling apparatus for a shield machine according to the present invention.
2 is a cross-sectional view taken along line II-II in FIG.
3 is a cross-sectional view taken along line III-III in FIG.
FIG. 4 is a plan view of an essential part showing a preferred embodiment of a segment assembling apparatus for a shield machine according to the present invention.
FIG. 5 is a side sectional view showing a preferred embodiment of the segment assembling apparatus for a shield machine according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Segment assembly apparatus 1 Shield machine 3a A segment 3b B segment 3k K segment 4 Turning ring 5 Radial direction moving member 6 Segment gripping member 16 Axial direction moving member 17 Pressing member 18 Support member

Claims (1)

A turning ring that turns in the circumferential direction in the shield machine, a radial moving member that moves on the turning ring via a pair of support brackets and moves in the radial direction of the shield, and a segment that is provided and assembled on the radial moving member A segment assembling apparatus having a gripping segment gripping member, wherein the support bracket is provided with an axially movable member that is movable in the shield axial direction, and is installed adjacent to the assembly position of the K segment that is finally assembled on the axially movable member. A pair of pressing members that move outward in the radial direction of the shield are provided to press the segment, and the segment moves in the opposite direction to the pressing member and abuts the existing segment on the extension line to apply the pressing load to the segment. A pair of support members are provided to transmit to the tip, and the tip of the pressing member is in contact with the inner peripheral surface of the segment Contact portion is formed by bending a predetermined length inward so as to face each other, the tip of the support member abutting portions abutting against the inner peripheral surface of the segment is formed is connected to the arcuate, the pressing member and Each of the support members has a barrel portion on each base end side, and the axially moving member is provided with a guide cylinder that slidably supports the barrel portion of the support member. A guide hole for slidably supporting the body portion is provided, and an expansion / contraction jack is installed between the pressing member and the supporting member. The pressing member and the supporting member are provided on the body portion of the pressing member and the body portion of the supporting member. shield machine segment pairs, wherein a stopper for fixing the pressing member and the support member relative to the guide tube by sandwiching from both the guide cylinder when it is contracted by the expansion and contraction jack inward is formed Apparatus.

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