JP2009108612A - Moist curing apparatus for lining concrete - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact moist curing apparatus for lining concrete. <P>SOLUTION: The moist curing apparatus 2 for lining concrete cures a concrete surface in a moist state to suppress the initiation of a crack in the hardened lining concrete surface after hardening of concrete placed in a space between a tunnel internal wall surface 11 and a lining center S used in tunnel lining work for covering the tunnel internal wall surface 11 with concrete and moved in the tunnel. The moist curing apparatus 2 has a track 33 installed at the top face and extending behind the center S; a moving body 44 movable along the track 33; and a spraying apparatus 5 installed at the moving body 44 to spray a spray liquid toward the lining concrete. The track 33 is movably supported by a support member 6 extended in the advancing direction with the advance of the center S. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a wet curing technique for tunnel lining.

  In tunnel lining work in which the excavation surface (inner wall surface) of an underground tunnel formed by excavating natural ground is covered with concrete, first, primary lining is performed by first spraying concrete onto the excavation surface of the underground tunnel. . And the secondary lining which coat | covers the inner wall surface of a tunnel after a primary lining further with concrete is performed.

  In secondary lining, concrete is covered with a formwork (hereinafter referred to as centle) that can move in the tunnel. The center is moved into the tunnel after the primary lining. And the concrete placement which pours the concrete before solidification between the center and the inner wall surface of the tunnel after the primary lining is performed.

  The placed concrete is protected inside the centle so that no external force is applied during a predetermined time until it is hardened. The centle is then removed after curing.

  After removing the center, the hardened concrete needs to be kept in an appropriate wet state in order to prevent the surface from cracking due to drying shrinkage. This is called concrete curing.

As a curing method, for example, the following method is well known.
That is, a plurality of spray tubes having a plurality of spray ports formed in the longitudinal direction are arranged so as to extend in the longitudinal direction of the tunnel and at equal intervals along the inner peripheral surface of the tunnel, and water is supplied to the spray tube at high pressure. In this method, mist is ejected from the spray port of each spray pipe toward the inner wall surface of the tunnel.

In addition to the above, the spray tubes may be arranged in a manner that, for example, a plurality of arch-shaped spray tubes are arranged at equal intervals in the longitudinal direction of the tunnel so as to follow the cross-sectional shape of the tunnel.
JP-A-7-173997

  By the way, in the technique until now, since the several spray tube was required as mentioned above, there existed a tendency for an apparatus to enlarge.

  This invention is made | formed in view of the said situation, The subject which it is going to solve is providing the wet curing apparatus of the lining concrete which can suppress the enlargement of an installation at least.

  The apparatus according to the present invention is used in tunnel lining work in which the inner wall surface of the tunnel is covered with concrete, and the concrete placed in the space between the lining formwork moving inside the tunnel and the inner wall surface of the tunnel is used. This is a wet-curing apparatus for lining concrete that cures the concrete surface in a wet state in order to suppress the occurrence of cracks on the surface of the hardened lining concrete after curing.

  The apparatus is provided with a track installed on the ceiling surface and extending toward the rear of the formwork, a movable body movable along the track, and sprayed toward the lining concrete installed on the movable body. A spraying device for spraying, and the track is required to be movably supported by a support member that is added in the traveling direction as the mold moves. Note that the rear side of the formwork means the rear side of the forward direction in which the tunnel is excavated.

  Therefore, since the track is installed on the ceiling surface, the track does not exist on the roadbed. Therefore, for example, the restriction at the time of placing the pump car for placing concrete is eased. In addition, it is necessary to form a space for installation of disaster prevention facilities in the tunnel side wall in the tunnel, but when performing the work of pulling out the formwork to form the space, work is done because there is no track on the roadbed Good.

  Next, the moving body moves within the range in which the track extends. And a spray liquid is sprayed toward the said lining concrete from the spraying apparatus installed in the moving body. Therefore, when the spray liquid is sprayed while the moving body is moving on the track, the spray liquid is sprayed on the lining concrete in the area where the moving body has moved, and the lining concrete is wetted.

  Since all that is necessary to wet the lining concrete is a track and a moving body that moves along the track and is equipped with a spraying device, an increase in the size of the wet curing device can be suppressed.

  Also, the tracks are not added as the formwork progresses. What is added is a support material that supports the track.

  The support material has sufficient functionality as long as it can support the weight of the track and the moving bodies moving along the track and their accessories. Thus, the support material need not be large.

  For example, if the track is an I-shaped steel, it may be at least strong enough to support the weight of the I-shaped steel, the weight of the moving body that moves the I-shaped steel, and the weight of other accessories. . For example, it is considered sufficient to use a support that is installed using an anchor or the like with a predetermined interval in the longitudinal direction of the tunnel. Therefore, the enlargement of the wet curing apparatus can be suppressed also by this.

Although the outline of the present invention has been described above, further features of the present invention will be described below.
The moving body includes a sliding portion that slides on the track, and a spray device equipment portion that is supported by the slide portion and is equipped with the spray device.

The spraying device has a hanger shaped along the shape of at least the upper half of the cross section of the tunnel, and a number of spray nozzle parts provided in the hanger.
The spray nozzle section includes a nozzle and a tube body that supplies the spray liquid to the nozzle, and at least the tube body is a telescopic bellows-like tube.

  The support member includes an attachment portion that is attached in a state of being suspended from a tunnel ceiling surface, and a track suspension pulley portion that suspends the track in a slidable state.

  The said formwork has a tank which stores the spray liquid supplied with respect to a spraying apparatus, and a hose storage space which can store the hose which sends a spray liquid from this tank to the said spray nozzle.

The track is provided with a plurality of hose support pulleys that support the hose at a constant pitch and slide on the track in accordance with the movement of the moving body.
The configurations described above can be combined as much as possible.

  Since the moving body on which the spraying device is installed moves along the track, if the spraying is performed while the moving body is moving, spraying in the tunnel is possible within the moving range of the moving body. For this reason, it is not necessary to install a plurality of spray tubes in the tunnel as in the prior art. Therefore, the apparatus can be miniaturized. In addition, if the size is reduced, the construction is simple, which contributes to shortening the construction period.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a lining concrete wet curing apparatus according to the present invention (hereinafter referred to as embodiments) will be described below with reference to the accompanying drawings.

  FIGS. 1 to 5 show a tunnel 1 that has been deframed after secondary lining is performed and the concrete is cured, and a wet curing apparatus (hereinafter referred to as a wet curing apparatus) for lining concrete according to the present invention installed in the tunnel 1. ) 2 shows a state where it is installed in the tunnel 1.

  The tunnel 1 is, for example, a so-called “kamaboko-shaped” tunnel having a circular cross section.

  The right side of FIGS. 1 and 2 is the formation side of the moat tunnel, and an unillustrated excavator is installed in that direction, and the excavator advances in that direction. The centle S is self-propelled and travels following the excavator. The center S pulls the wet curing device 2 located behind it.

The wet curing device 2 includes a track 3 extending toward the rear of the centle S installed on the roadbed, a movable body 4 movable along the track 3, and installed on the movable body 4 as lining concrete. And a spraying device 5 that sprays the spray liquid toward it.
Hereinafter, these components of the wet curing apparatus 2 will be described in detail.

<Orbit 3>
In this embodiment, the track 3 is formed by connecting a plurality of I-shaped steels in series, and is supported on the ceiling surface 11c (also referred to as a lining crown portion) of the inner wall surface 11 of the tunnel 1 by the support material 6. Installed (see FIGS. 8 to 10). The track 3 is not simply installed on the ceiling surface 11c. The support material 6 allows the ceiling surface 11c to freely move in the longitudinal direction of the tunnel while being suspended from the ceiling surface 11c (see FIG. 11).

  In order to enable the movement of the track 3 in the tunnel in accordance with the progress of the excavator, the support material 6 is added in the traveling direction as the centle S pulled by the excavator is advanced. The track 3 can slide along the ceiling surface 11c while being supported by the plurality of support members 6.

  As shown in FIGS. 7 to 10, the supporting member 6 is attached to the tunnel ceiling surface 11 c in a suspended state, and is integrated with and attached to the lower portion of the mounting portion 61, so that it can slide on the track 3. And a track suspension pulley 62 that is suspended on the rail.

  In addition, the support material 6 is sufficient if it can support the weight of the track 3, the moving body 4 that moves along the track 3, and their accessories. Therefore, the support material 6 does not need to be large. Examples of the accessories include a water supply hose and an electric cable described later.

  The attachment portion 61 is attached to the embedded anchor 611, the fixed portion 612 fixed to the ceiling surface 11c by the embedded anchor 611, and the fixed portion 612, and is used to suspend the track suspension pulley 62 so as to swing. And a swing support shaft 613.

  The track suspension pulley 62 includes a pair of drop plates 621 that are swingably opposed to both ends of the swing support shaft 613, and a pair of pulleys 622 that are respectively attached to opposing surfaces of the drop plates 621. , And a rotating shaft 621 a that rotatably attaches each pulley 622 to the hanging plate 621.

  The hanging plate 621 is made of a rectangular plate material that is long in the longitudinal direction of the track 3. The pair of pulleys 622 are arranged in series in the longitudinal direction of the hanging plate 621. Further, the pulleys 622 of the respective drop plates 621 are located coaxially with the pulley 622 of the other drop plate 621. That is, a total of four pulleys 622 are provided in the track suspension pulley 62.

  Then, the lower surface 31a of the upper flange 31 of the I-shaped steel forming the track 3 is brought into contact with the I-shaped steel webs 33 from the lower side by the four pulleys 622 from the lower side (FIGS. 8 and 9). , 10). As a result, the track 3 is supported by the support material 6. In addition, the lower flange with respect to the said upper flange of I-shaped steel is shown with the code | symbol 32. FIG.

<Moving object 4>
The moving body 4 includes a sliding portion 41 that slides on the track 3 and a spraying device equipped portion 42 that is supported by the sliding portion 41 and is equipped with the spraying device 5 (see FIG. 9).

  The sliding portion 41 has a trolley that is attached in contact with the upper surface 32 a of the lower flange 32 of the track 3.

  The trolley includes an electric trolley 411 having a driving device, and a plain trolley 412 as a driven vehicle arranged at a predetermined interval from the electric trolley 411 in the longitudinal direction of the track 3 (see FIGS. 2, 6 and 9). ).

The only difference between the two trolleys is the presence or absence of a drive motor.
Therefore, only the electric trolley 411 will be described, the same reference numerals are given to the same portions of the plane trolley 412 as the electric trolley 411, and the description of the plane trolley 412 will be omitted.

As shown in FIGS. 6, 8, and 10, the electric trolley 411 includes a pair of substrates 411a that face each other with the track 3 interposed therebetween, a connecting shaft 411b that integrates the pair of substrates 411a, and the opposing substrates 411a. It has a pair of pulleys 411d attached to the surface, a drive motor 411f attached to the substrate 411a on one side, and a control plate 413 that is installed on the side facing the drive motor 411f and controls the drive of the electric trolley 411.
In addition, the opposing surface where the pulley 411d is attached among board | substrates 411a is called an inner surface, and the surface of the side where the pulley 411d is not attached is called an outer surface.

  The substrate 411 a is a rectangular plate material that is long in the longitudinal direction of the track 3. The pair of pulleys 411d is arranged in series in the longitudinal direction of the substrate 411a and is rotatably attached to the one (inner) surface of the substrate 411a by a rotating shaft 411c. Moreover, the pulley 411d of each board | substrate 411a is mutually coaxially located with the pulley 411d of the other board | substrate 411a. Therefore, the electric trolley 411 has a total of four pulleys 411d.

  The connecting shaft 411b is positioned below the pair of substrates 411a and at the center in the width direction of the substrate 411a.

The electric trolley 411 is installed on the track 3 in a state where the upper surface 32a of the lower flange 32 of the track 3 and these four pulleys 411d are in contact with the I-shaped steel web 33 two on each side. (See FIGS. 8 and 10).

The driving force of the drive motor 411f is transmitted from a drive shaft (not shown) of the drive motor 411f to two pulleys 411d on the side where the drive motor 411f is located, among the four pulleys 411d, through a transmission gear (not shown). The The driving force may be transmitted to all four pulleys 411d. The drive motor 411f is rotated forward and backward by the control plate 413 so that the moving body 4 can reciprocate on the track 3 for an arbitrary set time. In the meantime, the spray liquid is sprayed by the spray device 5. Spraying of the spray liquid by the spray device 5 is performed by a control device (not shown).
The moving body 4 may be moved manually and sprayed there without being limited to such automatic setting. It is preferable that automatic setting and manual setting are selected so as to be able to cope with the situation at the site.

  The spray device equipment section 42 is attached to the lower ends of a pair of drooping rods 44 that are rotatably suspended by the connecting shafts 411b of the electric trolley 411 and the plain trolley 412. In addition, the spray device equipment section 42 is equipped with the spray device 5. In this embodiment, the spray device equipment portion 42 is a structure that extends in the longitudinal direction of the track 3 (see FIG. 6).

  The spray device equipment section 42 is equipped with the spray device 5 and can be suspended from the electric trolley 411 and the plain trolley 412, but the form is not limited. In this embodiment, the shape body extends in the longitudinal direction of the track 3. It is said that.

  A power source for supplying power to the electric trolley 411 is provided in the center, and electric power is supplied from the power source to the electric trolley 411 via an electric cable (not shown).

<Spraying device 5>
As can be seen from FIGS. 2, 4, 5, and the like, the spray device 5 installed in the spray device equipment section 42 is installed on the centle side in the longitudinal direction of the spray device equipment section 42.
As can be seen from FIGS. 3, 4, 8, and the like, the spraying device 5 includes a hanger 51 having a shape (arc shape) along the shape of at least the upper half of the cross section of the tunnel, and the longitudinal direction of the hanger 51. A number of spray nozzle portions 52 provided at intervals.

  The hanger 51 is located between the track 3 and the spray device equipment portion 42 and is disposed so as to be orthogonal to the track 3 and the spray device equipment portion 42 in plan view.

  The hanger 51 is provided with a spray tube 511 on a center line (not shown) extending in the longitudinal direction of the hanger 51 by an attaching means such as a fixing band (not shown). The spray tube 511 is provided with a number of spray nozzle portions 52 that are scattered at equal intervals.

The spray nozzle unit 52 includes a nozzle 52a and a pipe body 52b that is a pipe body that supplies the spray liquid to the nozzle 52a. At least the pipe body 52b is a tubular body made of a vinyl chloride resin material or the like having a bellows shape that can be expanded and contracted. The spray nozzle part 52 is attached to the spray pipe 511 through the connection pipe 511a.
For example, water is sprayed as a spray liquid from the spray nozzle portion 52 toward the inner wall surface 11 of the tunnel. Further, a film curing agent mainly containing water may be used instead of water.

  Further, the spray pipe 511 is provided with a connecting portion 512 at the center thereof for connecting a water supply hose 9 for supplying water from a water storage tank 8 described later (see FIG. 8). As shown in FIG. 7, a water pump 91 is interposed in the middle of the water supply hose 9. The water pump 91 feeds water into the spray pipe 511 at a high pressure.

  The water fed into the spray pipe 511 at a high pressure branches from the connecting portion 512. Then, the mist is ejected vigorously as mist from the spray nozzle portion 52 attached to the spray tube 511 via the spray tube 511 extending toward both sides of the hanger 51.

<Others>
The center S has the water storage tank 8 for storing water for spraying supplied to the spraying device 5, and a hose storage space 10 for storing the water supply hose 9 and an electric cable (see FIGS. 2 to 5). ). In the drawing, for convenience, the water hose 9 is shown as a combination of the water hose and the electric cable.

  The tank 8 is installed in the lower part of the centle S, and the hose storage space 10 is secured in a portion of the upper space of the centle S where the track 3 and the centle S intersect.

  A plurality of hose support wagons 13 that support the water supply hose 9 at a constant pitch and slide on the track 3 in accordance with the movement of the moving body 4 are provided at the end on the centle side of the track 3 (see FIG. 2, 4 and 5).

  The hose support wagon 13 may have any structure as long as it can lock the hose 9 and can slide the lower flange 32 of the I-shaped steel that is the track 3 in this state. Absent. For example, the thing provided with the ring-shaped latching | locking part which lets the water supply hose 9 pass to the lower end part of sliding means like the plane trolley 412 can be considered. However, even if water is passed through the hose for water supply, it is considered to be lightweight, so a lighter and smaller device than the plain trolley 412 is sufficient.

  When the hose supporting wagons 13 are attached to the water supply hose 9 at a constant pitch, the water supply hose 9 becomes an accordion form having a bellows shape as shown in FIGS. It expands and contracts along the track 3.

  Further, the hose support wagon 13 locks the electric cable together with the water supply hose 9. By doing in this way, an electric cable also becomes an accordion form similarly to the water supply hose 9, and is expanded-contracted along the track | orbit 3 according to the movement of the mobile body 4. FIG.

  In addition, what the code | symbol 92 shown by FIGS. 1-5 suggests is a ventilation pipe. The blower pipe 92 is a pipe for introducing outside air into the tunnel 1 for ventilation. The blower pipe 92 is installed in the vicinity of the ceiling surface 11c in the tunnel 1 and extends in the longitudinal direction of the tunnel.

<Action and effect>
Next, the effect of the wet curing apparatus 2 having such a configuration will be described.
The track 3 formed by connecting a plurality of I-shaped steels in series is slidably suspended on a number of support members 6 installed on the ceiling surface 11c of the tunnel 1. The moving range of the support material 6 is a range in which the support material 6 is provided in the tunnel 1.

  A state in which the track 3 is supported by the support member 6 will be described with reference to FIGS. 11 to 15 exemplify the state of the track 3 with respect to a single support member 6, the track 3 is supported by a plurality of support members 6 as described above.

FIG. 11 shows a state in which the track 3 is not yet supported by the support material 6 that is added as the centre S progresses.
The track 3 pulled by the centle S is gradually approaching toward the support member 6 shown in FIG. 11 (see FIG. 12).

Eventually, the tip of the track 3 is supported by the support member 6 (see FIG. 13).
And the track | orbit 3 is completely supported by the support material 6, and also moves to the arrow direction (refer FIG. 14).
When the progress of the track 3 is completed, the support member 6 supports the rear end of the track 3 (see FIG. 15).
Then, in a state where the track 3 is stopped, in other words, in a state where the centle S is stopped, the moving body 4 moves within a range in which the track 3 extends.
Further, the support member 6 is added in the traveling direction as the centle S travels. Therefore, the expansion range of the support material is expanded.

  As the moving body 4 moves, water is sprayed from the spraying device 5 installed in the moving body 4 toward the inner wall surface 11 of the lining concrete 1.

  As described above, the hanger 51 included in the spraying device 5 has an arc shape along the shape of the upper half portion of the tunnel cross section, and a large number of spray nozzle portions 52 are arranged at equal intervals on the hanger 51. Since water is sprayed while the moving body 4 is moving on the track 3, water is applied to the inner wall surface 11 of the tunnel covered with lining concrete in the area where the moving body 4 has moved. Will spray and become uniformly wetted in the area.

  In this embodiment, since only the track 3 and the moving body 4 that moves along the track 3 and includes the spraying device 5 are necessary for moistening the lining concrete, the size of the wet curing device 2 is increased. Can be suppressed.

  The track 3 is not added as the Centres S progresses. The support member 6 that supports the track 3 is added. Since the support material 6 is a simple and small support tool that is installed using the embedded anchor 611 at a predetermined interval in the longitudinal direction of the tunnel 1, this also suppresses an increase in the size of the wet curing device 2. be able to.

  Moreover, since the mobile body 4 should just have at least the sliding part 41 which slides on the track | orbit 3, and the spraying apparatus equipment part 42 supported by this sliding part 41 and equipped with the spraying apparatus 5, also by this The wet curing device 2 can be downsized.

  And since the track | orbit 3 is installed in the ceiling surface 11c, a track | orbit does not exist in a roadbed. Therefore, for example, the restriction when placing a pump car (not shown) for placing concrete at the time of placing is eased.

  In addition, it is necessary to form a space for installation of disaster prevention facilities in the tunnel side wall inside the tunnel, but there is a track on the roadbed when performing the work of pulling out the formwork to form the space, so it gets in the way Therefore, workability can be improved accordingly.

  Further, since the hanger 51 has an arc shape along the shape of the upper half portion of the cross section of the tunnel 1, a large number of spray nozzle parts 52 attached to the hanger 51 are also formed in the shape of the upper half portion of the cross section of the tunnel 1. It comes to be arranged in a circular arc shape along. Therefore, it can spray evenly according to the shape of the tunnel cross section. Therefore, it is possible to wet the tunnel cross section without leakage.

In addition, since the spray nozzle portion 52 has a pipe body 52b made of a vinyl chloride resin material or the like having a bellows shape that is extendable and changeable in shape, any shape can be used if there is a place where the spray is not reachable. In addition, it can be bent by hand, and the shape can be maintained in the bent state.
Therefore, it is possible for the operator to easily change the direction of the spray nozzle portion 52 to a location where the spray is not reachable. As a result, water can be sprayed evenly and uniformly on the inner wall surface 11 of the tunnel (see FIG. 16).

  In addition, the support member 6 only needs to have at least an attachment portion 61 attached in a state of being suspended from the tunnel ceiling surface 11c and a track suspension pulley portion 62 that suspends the track 3 in a slidable state. This also makes it possible to reduce the size of the wet curing apparatus 2.

  The center S stores a water storage tank 8 that stores water for spraying supplied to the spraying device 5 and a water supply hose 9 (including an electric cable) that sends water from the tank 8 to the spray nozzle portion 52. Since the hose storage space 10 is provided, the wet curing apparatus 2 can be downsized as compared with the case where these are provided in the moving body 4.

  Further, the track 3 is provided with a plurality of hose support pulleys 13 that support the water supply hose 9 and the electric cable at a constant pitch and slide on the track 3 in accordance with the movement of the moving body 4. The form of the water supply hose 9 and the electric cable adapted to the above becomes an accordion form, and therefore the water supply hose 9 and the electric cable can be smoothly expanded and contracted.

  Although the power source illustrated in the center S is exemplified, a rechargeable battery for driving the electric trolley 411 or the like may be mounted on the moving body 4.

  Further, the present invention is not limited to the illustrated examples described above, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

1 is a schematic overall perspective view of a wet curing apparatus for lining concrete according to the present invention. FIG. 2 is an enlarged longitudinal sectional view of FIG. 1. FIG. 2 is an enlarged cross-sectional view of FIG. It is a principal part expansion detailed perspective view of FIG. 1, Comprising: It is a figure which shows the state which the mobile body moved from the centle. FIG. 5 is an enlarged detailed perspective view of the main part of FIG. 1, similar to FIG. 4, illustrating a state before the moving body leaves the center. It is a principal part enlarged view of FIG. It is a figure for demonstrating the path | route until the water currently stored by the water storage tank is injected from a spray nozzle. FIG. 8 is an enlarged view of a region VIII portion in FIG. 7. It is a right view of FIG. FIG. 10 is an enlarged view of a region X portion in FIG. 9. It is the first figure for demonstrating the order of the movement of the track | orbit supported by the support material, and is a figure which shows the state by which the track | orbit is not yet supported by the support material added with the advance of the centle. It is a figure which continues in FIG. 11, Comprising: The state just before a track | orbit is supported by a support material is shown. FIG. 13 is a diagram continued from FIG. 12 and shows a state in which the tip of the track is supported by the support material. FIG. 14 is a diagram continued from FIG. 13, showing that the track is completely supported by the support material and is in the middle of movement. FIG. 15 is a diagram continued from FIG. 14, illustrating a state in which the movement of the track is completed and the support member supports the rear end of the track. It is an enlarged side view of a spray nozzle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tunnel 2 Moisture curing apparatus of lining concrete 3 Track | truck 4 Moving body 5 Spraying apparatus 6 Support material 8 Water storage tank 9 Water supply hose 10 Hose storage space 11 Tunnel inner wall surface 11c Tunnel ceiling surface 13 Hose support pulley 31 Upper flange 31a Lower surface 32 Lower flange 32a Upper surface 41 Sliding part 42 Spraying device equipment part 44 Drop rod 51 Hanger 52 Spray nozzle part 52a Nozzle 52b Pipe body 61 Attaching part 62 Rail suspension pulley part 91 Water pump 92 Blower pipe 411 Electric trolley 411a Substrate 411b Connecting shaft 411c Rotating shaft 411d Pulley 411f Drive motor 412 Plain trolley 413 Control plate 511 Spray tube 512 Connecting portion 611 Embedded anchor 612 Fixing portion 613 Swing support shaft 621 Drop plate 621a Rotating shaft 622 Pulley S Centle (formwork )

Claims (6)

Used in tunnel lining work to cover the inner wall surface of the tunnel with concrete, and after the concrete placed in the space between the lining formwork moving inside the tunnel and the inner wall surface of the tunnel is hardened, the hardened cover A wet curing apparatus for lining concrete that cures the concrete surface in a wet state so as to suppress the occurrence of cracks on the surface of the engineered concrete,
A track installed on the ceiling surface and extending toward the rear of the formwork;
A movable body movable along this trajectory;
A spraying device for spraying the spray liquid toward the lining concrete installed in the moving body,
A wet curing apparatus for lining concrete, wherein the track is movably supported by a support member that is added in the direction of travel of the formwork. The moving body includes a sliding portion that slides on the track,
The wet curing apparatus for lining concrete according to claim 1, further comprising: a spray device equipped portion supported by the sliding portion and equipped with the spray device. The spraying device has a hanger shaped along the shape of at least the upper half of the cross section of the tunnel, and a number of spray nozzle parts provided in the hanger.
The spray nozzle unit includes a nozzle and a tube body that supplies a spray liquid to the nozzle, and at least the tube body is a telescopic bellows-shaped tube. Wet curing equipment for concrete lining. The support material is
A mounting portion that can be mounted in a suspended state on the tunnel ceiling surface;
A wet curing apparatus for lining concrete according to any one of claims 1 to 3, further comprising a track suspension pulley section that slidably suspends the track. The mold is a tank for storing a spray liquid to be supplied to the spray device;
The wet curing apparatus for lining concrete according to any one of claims 1 to 4, further comprising a hose storage space capable of storing a hose for sending spray liquid from the tank to the spray nozzle.   The said track | orbit is equipped with the several hose support pulley which slides on a track | orbit according to the movement of the said mobile body while supporting a hose with a fixed pitch. A wet curing device for lining concrete as described in 1.

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