JP4463576B2 - Vibrator system for concrete compaction - Google Patents

Description

The present invention particularly relates to a vibrator system for compacting the lining concrete in order to improve the quality of lining concrete in tunnels.

In Patent Document 1 below, a connection cable 28 is connected to a proximal end portion of a long vibrating tool 24 inserted into a concrete placement chamber of a tunnel 12, and after the concrete 14 is poured into the concrete placement chamber, the connection is made. The concrete 14 is compacted by winding the cable 28 around the reel 32 and moving the vibration tool 24 in the concrete placement chamber.
JP 2001-262986 A

  In Patent Document 1, when the vibration tool 24 is moved by the connection cable 28 in the concrete 14 in the concrete placing room, a large tension is generated in the connection cable 28. If the cross-sectional area of the connection cable 28 is too small, the tension of the connection cable 28 is insufficient and the vibrating tool 24 cannot be moved smoothly by the connection cable 28. Therefore, it is necessary to increase the strength by increasing the cross-sectional area of the connection cable 28. However, if the cross-sectional area of the connection cable 28 is too large, the connection cable 28 cannot be smoothly wound around the reel 32. Accordingly, the concrete 14 cannot be reliably compacted.

  An object of the present invention is to smoothly move a vibrator (corresponding to the vibration tool 24) in a concrete placing chamber and to firmly compact the concrete with the vibrator in the concrete placing chamber.

Below embodiments drawings (the first embodiment shown in FIGS. 1-5, a second embodiment shaped state shown in FIGS. 6-8) of the present invention with the aid of codes will be described.
The concrete compaction vibrator system according to the first aspect of the present invention is configured as follows.

In this concrete compaction vibrator system, a vibrator (28) having a pipe (30) with a vibrating body (29) attached to the tip is inserted from the concrete placement chamber (3) into the concrete placement chamber (3). A feed mechanism (8) for inserting and moving the vibrator (28) in the longitudinal direction (X) of the tunnel (1) along the inner guide (4, 33) provided in the concrete placing chamber (3). I have. Pipes of the vibrator (28) on both sides of the tunnel (1) in the longitudinal direction (X) with respect to the guide rail (6) extending along the longitudinal direction (X) of the tunnel (1) outside the concrete placing chamber (3) An outer guide (7, 34) for supporting (30) movably in the longitudinal direction (X) of the tunnel (1) is attached, and the tunnel is guided between the outer guides (7, 34) on both sides with respect to the guide rail (6). The feed mechanism (8) is supported by a movable base (17) supported so as to be movable in the longitudinal direction (X) of (1). The feed mechanism (8) is supported so as to be movable up and down with respect to the movable table (17), and is close to each other to clamp the pipe (30) of the vibrator (28) outside the concrete placing chamber (3). The holding member (23, 25) on both the upper and lower sides that can take the holding state (P) that is separated from each other and release the holding state (Q) that is separated from each other, and is rotatable with respect to the movable base (17). A gripping drive unit (10) including a link mechanism for driving the holding members (23, 25) on both the upper and lower sides to a gripping state (P) and a gripping release state (Q) via the supported lever (14), Movable between a forward position (F) for moving the movable base (17) toward the concrete placement chamber (3) and a backward position (B) for moving the movable base (17) away from the concrete placement chamber (3) side. The base (17) reciprocates via the lever (14) And a fluid is acting cylinder (13). The driving force of the fluid cylinder (13) that moves the movable table (17) from the retracted position (B) to the advanced position (F) rotates the lever (14) to the link mechanism of the gripping drive section (10). The upper and lower clamping members (23, 25) are moved from the gripping state (P) to the gripping released state (Q), and the movable base (17) is moved from the forward position (F) to the backward position (B). The driving force of the fluid cylinder (13) rotates the lever (14) to act on the link mechanism of the grip drive unit (10) to grip the upper and lower clamping members (23, 25) from the grip release state (Q). Set to state (P). Incidentally, the timing and the upper and lower sides of the clamping member (23, 25) to the gripping state (P), for the timing of the upper and lower sides of the clamping member (23, 25) to grip release state (Q), both the upper and lower sides of the gripping It can be set appropriately according to the reciprocating position of the members (23, 25) .

In the invention of claim 1, when the vibrator (28) is inserted into the concrete placement chamber (3) from outside the concrete placement chamber (3) of the tunnel (1), a connection cable is not adopted unlike the prior art, Instead of the connection cable , as described above, the feed mechanism (8) supported on the movable base (17) reciprocatingly moved on the guide rail (6), that is, the holding members (23, 25) on both the upper and lower sides and the gripping drive unit ( 10) and a fluid cylinder (13), and the drive force of the fluid cylinder (13) for reciprocating the movable base (17) is applied to the link mechanism of the grip drive unit (10) via the lever (14) to move up and down. Since the holding members (23, 25) on both sides are in the gripping state (P) or the gripping release state (Q), the problems of the prior art are solved and the vibrator (28) can be operated with a simple structure. Concrete placement (3) the can be smoothly moved in.

  According to the present invention, the vibrator (28) can be smoothly moved in the concrete placing chamber (3), and the concrete can be reliably compacted by the vibrator (28) in the concrete placing chamber (3).

[First Embodiment]
First, a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 1A and 1B and FIG. 5A, an arch-shaped concrete placement chamber 3 is provided between a mold 2 installed in the tunnel 1 and an inner peripheral wall surface 1a of the tunnel 1. Is provided. A plurality of inner guides 4 are juxtaposed in the longitudinal direction X of the tunnel 1 at a plurality of locations (for example, four locations) in the inner circumferential direction on the ceiling portion in the concrete placement chamber 3. As shown in FIGS. 5B and 5C, each inner guide 4 has an annular guide wheel 4a (receiving portion). The mold 2 is provided with an inspection window 2 a in the vicinity of each inner guide 4.

  In the vicinity of the template 3 a that partitions the outer end of the concrete placing chamber 3, the support bases 5 extend in the longitudinal direction X of the tunnel 1 from the inside of the mold 2 to the outside at a plurality of locations (for example, four locations) in the inner circumferential direction. It extends along. A guide rail 6 extending along the longitudinal direction X of the tunnel 1 from the vicinity of the outside of the template 3a is mounted on the intermediate portion of each support base 5. As shown in FIGS. 2 (a), 2 (b) and 5 (d), each guide rail 6 has both end portions on one side of the tunnel 1 in the longitudinal direction X (one end portion on the template 3a side and the opposite side thereof). A guide roller base 7 (outer guide) is attached to the other end. A feed mechanism 8 assembled with a gripping mechanism 9 and a gripping drive unit 10 (link mechanism which is a part of the drive mechanism) can move in the longitudinal direction X of the tunnel 1 with respect to each guide rail 6 between the guide roller bases 7. It is supported by. A cleaning ring base 11 (outer guide) facing the template 3a is attached to one end of each guide rail 6 on the template 3a side adjacent to the guide roller table 7. Near the other end of each guide rail 6, a support roller base 12 (outer guide) is supported so as to be movable in the longitudinal direction X of the tunnel 1 with respect to each support base 5, and can approach and separate from the other end. .

  A hydraulic cylinder 13 that is a reciprocating drive unit (a fluid cylinder that is a part of the drive mechanism) is attached to each guide rail 6, and its piston rod 13 a extends toward one end of the guide rail 6. As shown in FIGS. 3 and 4A and 4B, in the gripping drive unit 10 of the feed mechanism 8, the first lever 14, the second lever 15, and the third lever 16 are respectively located with respect to the movable base 17. It is rotatably supported by the support shafts 18, 19, and 20. The first arm portion 14a of the first lever 14 and the first arm portion 15a of the second lever 15; the second arm portion 15b of the second lever 15; the arm portion 16a of the third lever 16; The second arm portion 14b and the piston rod 13a of the hydraulic cylinder 13 are connected to each other by a sliding pair by engaging the pin 22 with respect to the long hole 21, respectively. In the gripping mechanism 9 of the feeding mechanism 8, a lower clamping body 23 (clamping member) is supported so as to be movable up and down with respect to the movable base 17 and is supported with respect to the first arm portion 15 a of the second lever 15. The upper clamping body 25 (clamping member) is rotatably supported by the support shaft 26 with respect to the arm portion 16 a of the third lever 16 and is urged by the compression coil spring 27. Has been. When the piston rod 13a extends, the feed mechanism 8 approaches the one end portion side of the guide rail 6 to the forward position F, and when the piston rod 13a contracts, the feed mechanism 8 moves from the one end portion side of the guide rail 6. It separates and it becomes the retreat position B.

  Each vibrator 28 is mainly composed of an elongated pipe 30 (steel pipe) having a vibrating body 29 at the distal end, and an electric wire 31 passing through the pipe 30 is connected to the vibrating body 29 and pulled out from a proximal end portion 30a of the pipe 30. It is. The vibrators 28 are inserted on the support roller base 12, both guide roller bases 7, between the upper and lower side sandwiching bodies 25, 23 of the gripping mechanism 9, and the cleaning ring base 11, and seal the template 3a. It is inserted into the concrete placement chamber 3 from the mouth and inserted into the guide wheel 4 a of each guide 4. An interlocking chain 32 is connected between the base end portion 30 a of the pipe 30 of each vibrator 28 and the support roller base 12. When the piston rod 13a contracts and rotational force (driving force) is applied to the second arm portion 14b of the first lever 14 of the gripping drive unit 10, the gripping drive unit 10 holds the gripping mechanism 9 on both upper and lower sides. 25 and 23 will approach each other and will be in the holding state P which clamps the pipe 30 of the vibrator 28. FIG. When the piston rod 13a extends and rotational force (driving force) is applied to the second arm portion 14b of the first lever 14 of the gripping drive unit 10, the gripping drive unit 10 causes the gripping mechanism 9 to sandwich the upper and lower sides. 25 and 23 are separated from each other, and a grip releasing state Q is released in which the holding of the pipe 30 of the vibrator 28 is released.

  As shown in FIG. 1A, before placing concrete, each vibrator 28 is inserted into the concrete placing chamber 3, and the vibrator 29 is placed in the deepest part of the concrete placing chamber 3 in the longitudinal direction X of the tunnel 1. To be located. Thereafter, the concrete placement chamber 3 is sequentially filled with the lining concrete C from the lower side to the ceiling part side. Next, when the gripping mechanism 9 moves from the forward movement position F to the backward movement position B due to the backward movement of the piston rod 13a of the hydraulic cylinder 13, the gripping mechanism 9 is gripped by the forward movement of the piston rod 13a. When moving from the backward position B to the forward position F, the reciprocating operation for releasing the grip of the pipe 30 of the vibrator 28 is repeated. Therefore, the vibrator 28 is forcibly sent from the deepest side to the entrance side along the longitudinal direction X of the tunnel 1 while the lining concrete C is compacted in the concrete placing chamber 3 by the vibrating body 29. Then, the state shown in FIG. In that case, the support roller base 12 is pulled by the interlocking chain 32 at the base end portion 30 a of the pipe 30 of the vibrator 28, and retreats along the support base 5 while supporting the pipe 30.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. 6 to 8 focusing on differences from the first embodiment.

  Each inner guide 4 of the first embodiment is omitted, and an inner guide 33 and an outer guide 34 are extended in the tunnel 1 along the longitudinal direction X of the tunnel 1 over the inside and outside of the concrete placing chamber 3. Each of the inner guide 33 and the outer guide 34 is a reinforcing bar assembly in which concrete reinforcing bars 35 are assembled. This rebar assembly is formed by arranging a large number of a pair of upper and lower horizontal rebars 35a, 35b extending in a straight line along the longitudinal direction X of the tunnel 1 in the inner circumferential direction of the tunnel 1. A plurality of pairs of upper and lower reinforcing bar rings 35c and 35d extending in an annular shape outside the upper and lower horizontal reinforcing bars 35a and 35b in a state of being substantially parallel to each other along the inner circumferential direction of the tunnel 1 are arranged in the longitudinal direction X of the tunnel 1. It consists of things arranged side by side.

  The support roller base 12 of the first embodiment is omitted, and the feed mechanism 8, the both guide roller bases 7, and the cleaning ring base 11 are respectively inserted into the inside from the space provided in the outer guide 34. Each vibrator 28 is inserted in the outer guide 34 on both guide roller bases 7, between the upper and lower side sandwiching bodies 25, 23 of the gripping mechanism 9, and in the cleaning ring base 11, and in the concrete placing chamber 3. It is inserted into the inner guide 33 from the seal opening of the template 3a. A bulging body 36 (support body) in which wires such as piano wires are assembled in a cylindrical shape is attached to the base end portion 30 a of the pipe 30 of each vibrator 28, and the bulging body 36 is placed in the outer guide 34. Touching. The electric wire 31 drawn from the base end portion 30 a of each pipe 30 is wound around a guide roller base 37 on the support base 5. Each vibrator 28 moves in the inner guide 33 and the outer guide 34 along the longitudinal direction X of the tunnel 1, and at this time, the bulging body 36 of the base end portion 33 a of each vibrator 28 enters the outer guide 34. Move while being supported.

[ Reference example shown in FIG. 9]
The gripping mechanism 9 and gripping drive unit 10 of the feed mechanism 8 in the first embodiment are changed. In the grip driving unit 10, a lever 38 is rotatably supported by a support shaft 39 with respect to a movable base (not shown), and a first arm portion 38a of the lever 38 is supported with respect to a piston rod 13a of a hydraulic cylinder 13 (not shown). The shaft 40 is rotatably supported. In the gripping mechanism 9, a fixed clamping cylinder 41 (clamping member) is attached to a movable base (not shown), and a movable clamping body 42 (clamping member) inserted into the fixed clamping cylinder 41 is the lever 38. The second arm portion 38b is rotatably supported by a support shaft 43. When the piston rod 13a expands and contracts, the feed mechanism 8 takes the forward position F and the reverse position B as in the first embodiment (see particularly FIG. 2). When this piston rod 13a extends and rotational force (driving force) is applied to the first arm portion 38a of the lever 38, the movable holding body 42 moves downward as shown in FIG. The grip release state Q in which the pinching of 30 is released is entered. When the piston rod 13a contracts and rotational force (driving force) is applied to the first arm portion 38a of the lever 38, the movable clamping body 42 moves upward as shown in FIGS. The gripping state P in which the 28 pipes 30 are clamped with the fixed clamping cylinder 41 is obtained.

(A) is the fragmentary sectional view which looked at the state before installing the vibrator system concerning 1st Embodiment in the tunnel ceiling part, and performing concrete placement from the side, (b) is also concrete placement It is the fragmentary sectional view which looked at the state after performing installation from the side surface side. (A) is the elements on larger scale which looked at the state where a grasping mechanism is in an advance position in the vibrator system concerning a 1st embodiment from the side, and (b) looked at the state in the same retreat position from the side It is a partial expanded sectional view. It is the elements on larger scale which looked at the grasp release state of the grasping mechanism from the side in the vibrator system concerning a 1st embodiment. (A) is the elements on larger scale which looked at the grasping state of the grasping mechanism from the side in the vibrator system concerning a 1st embodiment, and (b) is the fragmentary sectional view similarly seen from the front. (A) is the fragmentary sectional view which looked at the ceiling part of the concrete placement room of the tunnel concerning a 1st embodiment from the front side, (b) looked at the guide provided in the concrete placement room from the front side. It is a partial expanded sectional view, (c) is the partial expanded sectional view similarly seen from the side surface side, (d) is the partial sectional view which looked at the guide roller stand of FIG. 3 from the front side. (A) is the fragmentary sectional view which looked at the state before installing the vibrator system concerning 2nd Embodiment in the ceiling part of a tunnel, and performing concrete placement from the side, (b) is also concrete placement It is the fragmentary sectional view which looked at the state after performing installation from the side surface side. (A) is the elements on larger scale which looked at the state in which the grasping mechanism is in the advance position from the side in the vibrator system concerning a 2nd embodiment, and (b) looked at the state in the same retreat position from the side. It is a partial expanded sectional view. (A) is the fragmentary sectional view which looked at the ceiling part of the concrete placement room of the tunnel concerning 2nd Embodiment from the front side, (b) is the partial expanded sectional view similarly seen from the side surface side. (A) is the elements on larger scale which looked at the grasp release state of the grasping mechanism from the side in the vibrator system concerning a reference example , and (b) is the elements on larger scale which looked at the grasping state of the grasping mechanism from the side. (C) is also a partial cross-sectional view seen from the front side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Tunnel, 1a ... Inner peripheral wall surface, 2 ... Formwork, 3 ... Concrete placement room, 4 ... Inside guide, 6 ... Guide rail, 7 ... Guide roller stand (outside guide), 8 ... Feeding mechanism, 10 ... Grip Drive unit ( link mechanism ) , 13 ... hydraulic cylinder ( fluid cylinder ), 14 ... lever, 17 ... movable base, 23 ... lower clamping body (clamping member), 25 ... upper clamping body (clamping member), 28 ... vibrator 29 ... vibrating body, 30 ... pipe, 33 ... inner guide, 34 ... outer guide , F ... advanced position, B ... retracted position, P ... gripping state, Q ... gripping released state, X ... longitudinal direction of the vibrator (vibrator Direction of movement).

Claims (1)

A vibrator having a pipe with a vibrating body attached to the tip is inserted from the outside of the concrete placement room into the concrete placement room, and the vibrator is moved along the inner guide provided in the concrete placement room in the longitudinal direction of the tunnel. In a concrete compaction vibrator system equipped with a mechanism,
Outer guides that extend along the longitudinal direction of the tunnel outside the concrete placement room are attached to both sides in the longitudinal direction of the tunnel with outer guides that support the vibrator pipe movably in the longitudinal direction of the tunnel. The above-mentioned feed mechanism is supported on a movable base supported so as to be movable in the longitudinal direction of the tunnel with respect to the guide rail,
In this feed mechanism,
Holding on both sides of the upper and lower sides supported so as to be movable up and down with respect to the movable table and capable of taking a holding state in which the vibrator pipes are held close to each other outside the concrete placement chamber and a holding release state in which they are separated from each other and released. Members,
A gripping drive unit comprising a link mechanism that drives the holding members on both the upper and lower sides to a gripping state and a gripping release state via a lever supported rotatably with respect to the movable table;
A fluid cylinder that reciprocally moves the movable table via the lever between a forward position that brings the movable table closer to the concrete placing room side and a retracted position that separates the movable table from the concrete placing room side;
The driving force of the fluid cylinder that moves the movable table from the retracted position to the advanced position rotates the lever to act on the link mechanism of the gripping drive unit to change the holding members on both the upper and lower sides from the gripping state to the gripping release state, The driving force of the fluid cylinder that moves the movable base from the forward position to the backward position rotates the lever to act on the link mechanism of the gripping drive unit so that the upper and lower clamping members are changed from the gripped release state to the gripped state <br> A concrete compaction vibrator system characterized by the above.

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