JP5862358B2 - Concrete compaction method - Google Patents

Description

  The present invention relates to a method for compacting concrete.

  An example of a vibrator used for compacting concrete is described in Patent Document 1. This vibrator is a rod-like vibrator having a motor and a vibrator main body having an eccentric pendulum coupled to a drive shaft of the motor, and is inserted into the concrete in which the vibrator main body of the vibrator is placed to drive the motor. Then, by vibrating the vibrator main body, it is possible to apply vibration to the placed concrete and compact it.

  An example of a concrete compaction method using the rod-shaped vibrator having the above-described configuration is described in Patent Document 2. In the concrete compaction method described in Patent Document 2, first, as shown by arrows a and b in FIG. 19, the lowermost inspection window 41 on the side wall portion side of a movable formwork (hereinafter referred to as “centre 40”). The concrete 45 was placed from the bottom, and the vibrator 35 was inserted into the concrete 45 in a state of being directed vertically through another inspection window 41 having the same height as the inspection window 41, and was placed at the lowest level. The concrete 45 is compacted.

  Next, similarly, as shown in FIG. 20, after the concrete 45 placed in the middle stage is compacted, the concrete 45 placed in the upper stage is compacted as shown in FIG. As shown, the concrete 45 placed between the top end and the upper side of the side wall is compacted, and the vibrator 35 is recovered.

  Next, as shown by an arrow a in FIGS. 23 and 24, the concrete 45 is placed from the inspection window 41 at the top end portion, and the vibrator 36 previously arranged at the top end portion is used to place the concrete at the top end portion. After the placed concrete 45 is compacted and the concrete 45 is placed and compacted on the top end, the vibrator 36 is recovered as shown in FIG.

  Then, by sequentially performing such work while moving the centle 40 in the longitudinal direction of the tunnel, it is possible to construct the lining concrete over the entire length of the tunnel.

Japanese Utility Model Publication No. 62-34049 JP 2007-138594 A

  By the way, in the concrete compaction method as described above, when placing the concrete 45 on the side wall and compacting, the rod-shaped vibrator 35 is inserted in a state of being vertically oriented. Since the concrete 45 is compacted, the range in which vibration can be applied by the vibrator 35 is very narrow. For this reason, in order to uniformly compact the entire concrete 45, the concrete 45 must be compacted by moving it in the left-right direction (longitudinal direction of the tunnel) while pulling up the vibrator 35. Hardening takes a lot of labor, and the quality of compaction depends on the skill level of the worker, and an inexperienced worker cannot compact the whole of the placed concrete 45 uniformly.

  The present invention has been made in view of the conventional problems as described above, and is capable of compacting concrete efficiently and being inexperienced without being affected by the skill level of the operator. However, it is an object of the present invention to provide a concrete compaction method capable of compacting the entire concrete uniformly.

In order to solve the above problems, the present invention employs the following means.
That is, the present invention is a concrete compacting method, comprising: a drive motor; a rod-shaped vibrating body connected to a rotating shaft of the drive motor and having an eccentric weight supported by three or more support portions; And using a vibrator with an eccentric weight attached to the rotating shaft , inserting the vibrator laterally into the mold so that the side of the vibrator is in contact with or buried in the concrete, The concrete placed is sequentially compacted from below to above by pulling upward while keeping the vibrator sideways following the concrete placement height.

According to the concrete compaction method of the present invention, the vibrator is inserted laterally into the mold so that the side surface of the vibrator contacts or is buried, and the vibrator follows the concrete placement. The concrete can be compacted by pulling upward while keeping the sideways.
Therefore, the vibration of the vibrator can be applied to a wide range of concrete, so that the concrete can be compacted efficiently. Also, when compacting concrete, the vibrator is inserted laterally into the formwork so that its side is in contact with or buried in the concrete placement surface, and the vibrator follows the concrete placement height. Since it is only necessary to pull it upward while keeping it sideways, the concrete compaction quality will not be affected by the skill level of the worker, and even the inexperienced worker will tighten the entire concrete uniformly. Can be hardened.
Moreover, since the eccentric weight of the vibrating body is supported by three or more support portions, the entire length of the vibrating body can be increased.
Therefore, when the placed concrete is compacted, vibration from the vibrating body can be applied to a wide area of the concrete by inserting the vibrating body laterally with respect to the concrete, and the concrete is compacted efficiently. be able to.
In addition, since it is only necessary to insert the vibrating body sideways with respect to the concrete, the quality of the concrete compaction is not affected by the skill level of the worker, and even an inexperienced worker may The whole can be compacted uniformly.
Furthermore, the amount of deflection when the eccentric weight rotates increases as the distance between the support portions increases, and the distance between the support portions is also restricted to a certain value or less in order to keep this amount of deflection within an allowable value. On the other hand, in the present invention, since the eccentric weight is supported by three or more support parts, the distance between the support parts can be kept below a certain level compared to the case where the eccentric weight is supported by only two support parts. The total length of the vibrating body can be increased while suppressing.
The horizontal orientation of the vibrator includes horizontal and substantially horizontal. In short, it means an angle at which the side surface of the vibrator can be brought into contact with or buried in the concrete placing surface when the vibrator is inserted into the formwork.

Further, since an eccentric weight is attached to the rotating shaft, a drive motor having a mass larger than that of the vibrating body can be vibrated, so that a concrete portion corresponding to the drive motor can be compacted.

  In the present invention, the drive motor may be a biaxial motor.

According to the concrete compaction method of the present invention, when the overall length of the vibrator is set to a predetermined length, a rod-shaped vibrating body is connected to each rotating shaft of the drive motor of both shafts. The length of each vibrator can be shortened compared to the case where one rod-like vibrator is connected to the rotation shaft of the shaft drive motor and the overall length of the vibrator is set to a predetermined length.
Therefore, the natural frequency of each vibrating body becomes high, and the natural frequency of each vibrating body can be shifted from the vibration range of use of the vibrator. The overall compaction performance of concrete can be improved.

The present invention also includes a drive motor and two or more vibration units that are connected to a rotating shaft of the drive motor and that have eccentric weights supported by two or more support parts. A vibrator having a rod-shaped vibrating body configured and having an eccentric weight attached to the rotating shaft is used, and the vibrator has a side wall in contact with or embedded in a concrete placement surface. It is inserted into the interior sideways, and the concrete placed is sequentially compacted from below to above by pulling upward while keeping the vibrator sideways following the concrete placement height. .

  According to the concrete compaction method of the present invention, the vibrator is configured by detachably connecting two or more vibration units each having an eccentric weight supported by two or more support portions. By setting the overall length of the vibrating body to a length corresponding to the compaction range of the concrete, it is possible to flexibly cope with the size of the concrete compaction range.

  Furthermore, in the present invention, the drive motor may be a biaxial motor.

  Furthermore, in the present invention, two or more interference rings that avoid interference between the vibrator and the formwork may be attached around the vibrator.

  According to the concrete compaction method of the present invention, two or more interference rings are attached around the vibrator, and it is possible to avoid the vibrator from interfering with the mold frame by the interference ring. It can be prevented from being damaged due to interference with the frame.

  As described above, according to the concrete compaction method of the present invention, the concrete compaction work can be efficiently performed, and an inexperienced worker is not affected by the skill level of the worker. Even so, the entire concrete can be compacted uniformly.

It is the top view which showed an example of the vibrator used for the compacting method of the concrete by this invention. It is sectional drawing of the vibrator of FIG. It is an enlarged view of the A section of FIG. It is explanatory drawing which showed the inside of a vibrating body. It is a perspective view of an interference ring. It is explanatory drawing which showed one Embodiment of the compacting method of the concrete by this invention, Comprising: It is explanatory drawing which showed the procedure of placement and compacting of the concrete to the lowest step of a side wall part. It is explanatory drawing which showed the procedure of placing and compacting the concrete to the middle stage of a side wall part. It is explanatory drawing which showed the procedure of placing and compacting the concrete to the upper stage of a side wall part. It is explanatory drawing which showed the procedure of placement of concrete between the top end part and the upper stage of a side wall part, and compaction. It is explanatory drawing which showed the procedure of placing and compacting the concrete to a top end part. It is explanatory drawing which showed the procedure of placing and compacting the concrete to a top end part. It is explanatory drawing which showed the state which the concrete placement and compaction was completed. It is explanatory drawing which showed the lid | cover and guide of Centle. It is explanatory drawing which showed operation | movement of the lid | cover and guide of FIG. It is the perspective view which showed the other example of the vibrator used for the compacting method of the concrete by this invention. It is a partial expanded sectional view of FIG. It is the elements on larger scale which showed the other example of the vibrator used for the compacting method of the concrete by this invention. It is a top view of the eccentric weight of FIG. It is explanatory drawing which showed an example of the conventional concrete compaction method, Comprising: It is explanatory drawing which showed the procedure of placing and compacting the concrete to the lowest step of a side wall part. It is explanatory drawing which showed the procedure of placing and compacting the concrete to the middle stage of a side wall part. It is explanatory drawing which showed the procedure of placing and compacting the concrete to the upper stage of a side wall part. It is explanatory drawing which showed the procedure of placement of concrete between the top end part and the upper stage of a side wall part, and compaction. It is explanatory drawing which showed the procedure of placing and compacting the concrete to a top end part. It is explanatory drawing which showed the procedure of placing and compacting the concrete to a top end part. It is explanatory drawing which showed the state which the concrete placement and compaction was completed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIGS. 1 to 5 show an example of a vibrator used in the concrete compaction method according to the present invention. The vibrator 1 can be applied to concrete compaction. In the present embodiment, the vibrator 1 is applied to compaction of lining concrete in a mountain tunnel.

  That is, as shown in FIGS. 1 and 2, the vibrator 1 is a rod-like vibrator 1, and includes a drive motor 2, a rod-like vibrating body 6 connected to the rotating shaft 3 of the driving motor 2, and a vibrating body. 6 includes an interference ring 25 attached to the periphery of 6 and a power cable 33 connected to the drive motor 2.

  The drive motor 2 is a single-axis motor, and includes a cylindrical casing 4 and a motor main body 5 provided in the casing 4 as shown in FIG. One end of the casing 7 is connected, and one end of an eccentric weight 10 of the vibrating body 6 described later is connected to the rotating shaft 3 of the motor body 5.

  The vibrating body 6 is configured by detachably connecting two or more vibration units 13 including eccentric weights 10 supported by bearings 9 as two or more support portions. As shown in FIGS. 1 and 2, three vibrating body units 13 are detachably connected.

As shown in FIG. 4, each vibration unit 13 includes a cylindrical casing 7, a bearing 9 that is mounted at two or more locations in the casing 7, and a bearing in the casing 7 that is inserted into the casing 7. 9 and a substantially round bar-shaped eccentric weight 10 supported rotatably. In FIG. 4, bearings 9 are mounted at three locations of the both ends and the central portion in the casing 7, and the three locations of the eccentric weight 10 are supported by the three bearings 9.
Depending on the length of the eccentric weight 10, only two locations on both ends of the eccentric weight 10 may be supported by the bearing 9, or four or more locations of the eccentric weight 10 may be supported by the bearing 9.

  The vibrating body unit 13 is connected to the drive motor 2 by connecting one end of the casing 7 to one end of the casing 4 of the drive motor 2 and connecting one end of the eccentric weight 10 to the rotating shaft 3 of the motor body 5 of the drive motor 2. Can be linked. Alternatively, the two vibrating body units 13 can be connected to each other via a joint 15 described later.

  Female threaded portions 8 are provided on the inner peripheral surface side of both ends of the casing 7 of the vibrating body unit 13, and external threads on the outer peripheral surface side of both ends of the casing 16 of a joint 15 (see FIG. 3) described later are provided on the female threaded portion 8. The casing 17 of the vibrating body unit 13 and the casing 16 of the joint 15 can be connected to each other by screwing and tightening the portion 17.

  The eccentric weight 10 of the vibrating body unit 13 is obtained by notching a part of the peripheral surface at a predetermined depth over substantially the entire length, and shifting the position of the center of gravity from the central axis. Are supported rotatably by three bearings 9 mounted in the casing 7.

  An I-shaped engagement groove 11 is provided at one end of the eccentric weight 10, and an I-shaped engagement protrusion 12 is integrally provided at the other end, and the engagement groove 11 of the eccentric weight 10 or By engaging the engaging protrusions 12 with engaging protrusions 21 or engaging grooves 22 at both ends of the joint shaft 20 of the joint 15 described later, the eccentric weight 10 of the vibrating body unit 13 and the joint shaft 20 of the joint 15 are engaged. Can be connected to each other.

  As shown in FIG. 3, the joint 15 includes a cylindrical casing 16, bearings 19 that are mounted at two locations on both ends of the casing 16, and a bearing that is inserted into the casing 16 and that is mounted in the casing 16. 19 is composed of a round bar-like joint shaft 20 whose both end portions are rotatably supported by 19.

A male screw portion 17 is provided on the outer peripheral surface side of both end portions in the axial direction of the casing 16 of the joint 15, and the male screw portion 17 is screwed into the female screw portions 8 at both end portions of the casing 7 of the vibrating body 6 and tightened. The casing 7 of the vibrating body 6 and the casing 16 of the joint 15 can be connected to each other.
As shown in FIG. 2, a suspension can 18 is provided on the outer surface of the joint 15, and the end of the first wire 47, which will be described later, is connected to the suspension can 18, so that the vibrator 1 is connected to the end of the first wire 47. Can be hung.
The installation position of the hanging can 18 is not limited to the joint 15 and may be installed at any position of the vibrating body 6 or the drive motor 2.

  An I-shaped engagement protrusion 21 is integrally provided at one end portion of the joint shaft 20 in the axial direction, and an I-shaped engagement groove 22 is provided at the other end portion. By engaging the protrusion 21 or the engagement groove 22 with the engagement groove 11 or the engagement protrusion 12 at both ends of the eccentric weight 10 of the vibration body unit 13, the joint weight of the eccentric weight 10 of the vibration body unit 13 and the joint 15 is obtained. 20 can be connected to each other.

  As shown in FIGS. 1 and 2, among the three vibrating body units 13, the first vibrating body unit 13 a is connected to the drive motor 2, and the first vibrating body unit 13 a is connected to the first vibrating body 15 via the joint 15. The second vibrating body unit 13b is connected, and the third vibrating body unit 13c is connected to the second vibrating body unit 13b via the joint 15.

As shown in FIGS. 1 and 2, an interference ring 25 is attached to a plurality of locations (two locations in the present embodiment) around the vibrating body 6. It is possible to prevent damage due to interference.
The attachment position of the interference ring 25 is not limited to the vibrating body 6 and may be attached to the driving motor 2. In order to stably support the vibrating body 6, the vibrating body 6 and the driving motor 2 are installed. It is preferable to attach to both.

  As shown in FIG. 5, the interference ring 25 includes a pair of semicircular ring bodies 26 formed of an elastic body such as rubber, and a fixing member 30 that fixes the ring bodies 26 so as to form a disk shape. It consists of and.

  A semicircular insertion hole 27 through which the casing 7 of the vibrating body unit 13 is inserted is provided at the center of each ring body 26, and the casing 7 of the vibrating body unit 13 is inserted into the insertion holes 27 of both ring bodies 26. In a state in which the two ring main bodies 26 are inserted, the two ring main bodies 26 can be fixed around the casing 7 of the vibrating body 6 by fixing the two ring main bodies 26 in a disk shape with the fixing members 30.

  The fixing member 30 includes a substantially L-shaped fixing plate 31 provided on both surfaces of each ring body 26 and a pair of screw fastening bodies 32 that connect between the fixing plates 31 on each surface of both ring bodies 26. With the casing 7 of the vibrating body unit 13 inserted through the insertion holes 27 of both ring bodies 26, the fixed plates 31 on both surfaces of both ring bodies 26 are connected by a pair of screw fastening bodies 32, respectively. The interference ring 25 can be fixed around the vibrating body 6.

  FIGS. 6 to 14 show an embodiment of a concrete compaction method according to the present invention. The concrete compaction method of the present embodiment is configured to compact the lining concrete of a mountain tunnel using the vibrator 1 shown in FIGS. Hereinafter, the concrete compaction method of the present embodiment will be described in detail.

  First, as shown in FIG. 6, concrete 45 is placed in the center 40 from the lower inspection window 41 (arrows a and b in the figure) of the center 40, and a pulling device (not shown) is operated. The first wire 47 is fed out from the pulling device, and the vibrator 1 attached to the tip of the first wire 47 is inserted into the center 40 from the inspection window 41 on the top end side, and the vibrator 1 is kept sideways. It is inserted into the concrete 45 placed in In this case, a plurality of (three in the present embodiment) vibrators 1 are inserted into the center 40 through the inspection window 41 on the top end side so as to reach the entire length of the center 40.

  And the vibration body 6 is vibrated by operating the drive motor 2 of each vibrator 1, and the vibration of the vibration body 6 is given to the concrete 45, whereby the concrete 45 placed in the lowermost stage is compacted.

  In this case, the vibrating body 6 is formed in a long shape by connecting the three vibrating body units 13 and is inserted into the concrete 45 in a state where the long vibrating body 6 is turned sideways. Compared with the conventional technique inserted in the concrete 45 in the direction directed to the direction, the compaction range of the concrete 45 by the vibrating body 6 can be increased, and the concrete 45 placed at the bottom of the side wall portion is more efficient. It can be compacted well.

  Further, since it is only necessary to insert the vibrator 6 into the concrete 45 in a state in which the vibrator 6 is kept sideways, as in the conventional technique in which the vibrator of the vibrator is inserted into the concrete 45 in the vertical direction, uniform compaction is performed. Therefore, it is not necessary to move the vibrator left and right, and even an inexperienced worker can uniformly compact the entire concrete 45 placed at the lowest level.

  Next, after the placement and compaction of the concrete 45 on the lowermost side of the side wall is completed, as shown in FIG. 7, the first wire 47 is pulled up by operating the lifting device, and each vibrator 1 is moved to the lowermost concrete. By moving the concrete 45 upward from the placement surface 46 of 45 by a predetermined distance, placing concrete 45 into the center 40 from the middle inspection window 41 (arrows a and b in the figure), and operating the pulling device The first wire 47 is fed out, and the vibrators 1 are inserted into the concrete 45 placed in the middle stage of the side wall in a state of being kept sideways, whereby the concrete 45 placed in the middle stage is compacted.

  Next, after the concrete 45 is placed and compacted on the middle side of the side wall, as shown in FIG. 8, the concrete 45 is placed and compacted on the upper side of the side wall as shown in FIG. As shown in FIG. 9, the concrete 45 is placed and compacted between the top end and the upper side of the side wall.

  In addition, when the concrete 45 between the middle stage, the upper stage, and the top end and the upper stage is compacted, the compaction range of the concrete 45 by the vibrating body 6 can be increased as in the case of the lowermost stage. The concrete 45 placed between the middle stage, the upper stage, and the top end and the upper stage can be compacted efficiently. Further, since it is only necessary to insert the vibrating body 6 into the concrete 45 in a state in which the vibrating body 6 is kept sideways, even an inexperienced operator can interrupt the entire concrete 45 placed between the upper stage and the top end and the upper stage. Can be uniformly compacted.

  Next, after the concrete is placed and compacted between the top end and the upper side of the side wall, as shown in FIG. 10, a pair of vibrators 1 (in the figure, the wife 1 side) In order to collect the other vibrator 1 from the inspection window 41 at the top end, and to extend the remaining set of vibrators 1 to the top end in the longitudinal direction of the center 40. It replaces with the 2nd wire 48 arrange | positioned horizontally.

  Then, as shown in FIGS. 10 and 11, concrete 45 is placed inside the center 40 from the inspection window 41 (arrow a in the figure) at the top end, and the vibrator 1 is operated as shown in FIG. By pulling out the second wire 48 in the longitudinal direction of the tunnel, the concrete 45 is placed on the top end and compacted.

  In this way, the lining concrete can be applied to the portion corresponding to the entire length of the centle 40, and the concrete 45 is placed and compacted sequentially while moving the centle 40 in the longitudinal direction of the tunnel. Thus, the lining concrete can be constructed over the entire length of the tunnel.

  As shown in FIGS. 13 and 14, a rectangular plate-like lid 43 for opening and closing each inspection window 41 of the center 40 and a first wire 47 are supported on the inner surface side of the center 40 so that the first wire 47 can be drawn out from the lifting device. An arcuate guide 44 is rotatably provided. When placing the concrete 45 on the side wall, the inspection window 41 below the placement surface 46 of the concrete 45 is closed by the lid 43, and the inspection window 41 above the placement surface 46 is opened. The guide 44 protrudes from the inspection window 41 in the opened state into the center 40, and the first wire 47 and the power cable 33 inserted into the center 40 from the inspection window 41 at the top end by the guide 44. As the placing surface 46 of the concrete 45 rises, the inspection window 41 is sequentially closed with the lid 41, and the vibrator 1 is raised while collecting the guide 44 from the inspection window 41. In FIG. 14, reference numeral 42 denotes a fixing member that fixes the guide 44 in a recovered state.

  In the concrete compaction method of the present embodiment configured as described above, the concrete 45 is placed inside the centle 40, and the vibrator 1 is kept sideways in the placed concrete 45. Since the concrete 45 is compacted by being inserted, vibration can be applied to the portion of the concrete 45 corresponding to the entire length of the vibrator 6 of the vibrator 1.

  Therefore, compared to the conventional compacting method in which the vibrator is inserted into the concrete 45 with the vibrator facing upward, the range of compaction of the concrete 45 by the vibrator 6 of the vibrator 1 can be widened. Can be efficiently compacted.

  Moreover, since the vibrator 6 of the vibrator 1 is configured by detachably connecting two or more vibrator units 13, the length of the vibrator 6 is arbitrarily set according to the compaction range of the concrete 45. It is possible to flexibly cope with compaction of various concrete 45.

  Furthermore, since the vibrator 6 of the vibrator 1 may be inserted into the concrete 45 in a state of being kept sideways, the quality of compaction of the concrete 45 is not affected by the skill level of the operator. Even a shallow worker can compact the entire concrete 45 uniformly.

  In the above description, the vibrator 6 is configured by releasably connecting two or more (three in the above embodiment) vibrator units 13, but without using the vibrator unit 13. The vibrating body may be configured by an eccentric weight supported by three or more bearings. In that case, the vibrator 1 can be made as an integrated product without being divided into parts such as the vibrating body unit 13 and the drive motor 2, so that failure at the joint portion of these parts can be prevented.

  15 and 16 show another example of a vibrator used in the concrete compaction method according to the present invention. This vibrator 1 uses a dual-axis motor having two rotating shafts 3a and 3b as a drive motor 2, and is connected to vibrating bodies 6a and 6b respectively to the rotating shafts 3a and 3b. 1 to 5 are the same as those shown in FIG.

  The drive motor 2 includes a cylindrical casing 4, a motor body 5 including a stator 5 a, a rotor 5 b, two rotating shafts 3 a, 3 b and the like provided in the casing 4, and bearing cases provided at both ends of the casing 4. 4a and 4b and lids 4e and 4f provided outside the respective bearing cases 4a and 4b, and the respective rotating shafts 3a and 3b of the motor body 5 by the bearings 4c and 4d provided in the respective bearing cases 4a and 4b. Is supported rotatably.

  One end and the other end of the casing 4 of the drive motor 2 are connected to one end of the casing 7a of one vibrating body 6a and one end of the casing 7b of the other vibrating body 6b, respectively. One end of an eccentric weight 10a of one vibrating body 6a and one end of an eccentric weight 10b of the other vibrating body 6b are connected to the other rotating shaft 3b.

  And also when compacting the lining concrete of a mountain tunnel using the vibrator 1 shown in FIG.15 and FIG.16, it is the same as that of the concrete compaction method of one Embodiment shown in FIGS. The effect of this can be achieved.

In addition, since the vibrator 6 a and 6 b are connected to the rotary shafts 3 a and 3 b of the drive motor 2, respectively, the entire length of the vibrator 1 is set to a predetermined length. Compared to the example shown in FIGS. 1 to 5 in which the total length is set to a predetermined length, the lengths of the vibrators 6a and 6b can be shortened.
Accordingly, the natural frequencies of the vibrators 6a and 6b are increased, and the natural frequencies of the vibrators 6a and 6b can be shifted from the use vibration region of the vibrator 1. It is difficult to form a portion that does not vibrate, and the concrete compaction performance by the vibrator 1 as a whole can be enhanced.

  17 and 18 show another example of a vibrator used in the concrete compaction method according to the present invention. This vibrator 1 uses a dual-axis motor having two rotating shafts 3a and 3b as a drive motor 2, and connects vibrators 6a and 6b to the rotating shafts 3a and 3b, respectively, and also connects to the rotating shafts 3a and 3b, respectively. Eccentric weights 10c and 10d are attached, and other configurations are the same as those shown in FIGS.

  As shown in FIG. 18, the eccentric weights 10c and 10d have a substantially arc plate shape, and are portions of the rotary shafts 3a and 3b positioned between the inner surfaces of the bearing cases 4a and 4b and the rotor 5b. Is attached.

  And even when compacting the lining concrete of a mountain tunnel using this vibrator 1, the same effect as the case where the vibrator 1 shown in FIGS. 1-5 and 15-16 is used. In addition to this, the vibrator 1 has eccentric weights 10c and 10d attached to the respective rotary shafts 3a and 3b of the drive motor 2, so that the drive motor 2 can also be vibrated, and the concrete corresponding to the drive motor 2 can be made. The part can also be compacted.

  In addition, in the vibrator 1 shown in FIGS. 1 to 5, as in the vibrator 1 shown in FIGS. 17 to 18, an eccentric weight is attached to the rotating shaft 3 of the drive motor 2, and the concrete portion corresponding to the drive motor 2 is also provided. You may comprise so that it may compact.

  In the above description, the concrete compaction method according to the present invention is used for compacting lining concrete in mountain tunnels. However, the present invention is not limited thereto, and may be used for compacting other various concretes. In this case, the same effect is obtained.

DESCRIPTION OF SYMBOLS 1 Vibrator 2 Drive motor 3 Rotating shaft 3a, 3b Rotating shaft 4 Casing 4a, 4b Bearing case 4c, 4d Bearing 4e, 4f Lid 5 Motor main body 5a Stator 5b Rotor 6 Vibrating body 6a, 6b Vibrating body 7 Casing 7a, 7b Casing 8 Female thread part 9 Bearing 10 Eccentric weight 10a, 10b, 10c, 10d Eccentric weight 11 Engaging groove 12 Engaging protrusion 13 Vibration unit 15 Joint 16 Casing 17 Male thread part 18 Suspension rod 19 Bearing 20 Joint shaft 21 Engaging protrusion 22 Engaging groove 25 Interference Ring 26 Ring Main Body 27 Insertion Hole 30 Fixing Member 31 Fixing Plate 32 Screw Fastening Body 33 Power Cable 35 Vibrator 36 Vibrator 40 Centle 41 Inspection Window 42 Fixing Member 43 Lid 44 Guide 45 Concrete 46 Placing Surface 7 first wire 48 second wire

Claims (5)

A concrete compaction method,
A drive motor; and a rod-shaped vibrating body having an eccentric weight that is connected to a rotation shaft of the drive motor and supported by three or more support portions , and the eccentric weight is attached to the rotation shaft. Using a vibrator
The vibrator is inserted sideways into the formwork so that its side is in contact with or buried in the concrete, and the vibrator is pulled up while following the concrete placement height and keeping the vibrator sideways. A concrete compaction method characterized by sequentially compacting the placed concrete from below to above. The method for compacting concrete according to claim 1 , wherein the drive motor is a biaxial motor. A rod-shaped vibration composed of a drive motor and two or more vibration units connected to a rotation shaft of the drive motor and having an eccentric weight supported by two or more support portions. Using a vibrator having a body and an eccentric weight attached to the rotating shaft ,
The vibrator is inserted sideways into the formwork so that its side is in contact with or buried in the concrete, and the vibrator is pulled up while following the concrete placement height and keeping the vibrator sideways. A concrete compaction method characterized by sequentially compacting the placed concrete from below to above. 4. The concrete compaction method according to claim 3 , wherein the drive motor is a double-axis motor. The concrete compaction according to any one of claims 1 to 4 , wherein two or more interference rings that avoid interference between the vibrator and a formwork are attached around the vibrator. Method.