JP2014152542A - Automatic sheet laying carriage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic sheet laying carriage capable of automatically covering a concrete placing place, treating rainwater as desired, and preventing the extension of a construction term.SOLUTION: An automatic sheet laying carriage 1 is configured so as to mount a plurality of sheet rolls 20 thereon, be connected to an upper end of a slip form 3, move up and down according to upward and downward movement of the slip form 3, cover a surface to be concrete-placed with a sheet 22 such that a shaft center 21 of the sheet roll 20 remains on the sheet 22 when moving down, and take up the sheet 22 covering the surface to be concrete-placed on the shaft center 21 of the sheet roll remained on the sheet 22 when moving up along the surface to be concrete-placed.

Description

  The present invention can automatically cover a concrete placement site with a sheet in order to prevent rainwater from flowing into the concrete placement site when continuously placing face concrete of a concrete facing dam. It relates to a seat laying cart.

  Construction of a huge building such as a dam is performed on an open-air street, and it takes a long time to complete. When concrete is placed in the rain, the quality of the concrete is reduced. However, there was a problem that the construction period was greatly influenced by the weather.

  It is possible to prevent deterioration of concrete quality due to rain by covering the cast concrete with a sheet, but construction cannot be performed while the cast concrete is covered with a sheet, thus preventing the construction period from being prolonged. There was a problem that it was not possible to do this, and the work of removing the sheet by covering the placed concrete with a sheet and removing the sheet had to rely on human power.

  Also, the concrete facing part of the concrete dam is not only inclined by about 30 degrees, but also has reinforcing bars on the entire surface, so the slope where concrete should be placed is covered with a sheet by human power. When removing it, there was also a problem that there was a danger of sliding down.

  In particular, the concrete placement site of the concrete facing dam is covered with asphalt emulsion, so rainwater flows over the surface and flows into the concrete placement site below, where it accumulates and rain stops. Until the rainwater was drained, face concrete could not be placed, and it was impossible to prevent the construction period from being prolonged.

  Japanese Patent Laid-Open No. 8-326038 (Patent Document 1) divides a construction area into a plurality of matrix-like areas, sets up struts at the intersections of the matrix, and uses at least two struts adjacent to each other to form a horizontal rectangular plane. Providing a dam all-weather construction method that can perform normal work such as construction and curing even in rainy weather by providing a roof made of panels.

JP-A-8-326038

  However, the all-weather construction method disclosed in Japanese Patent Laid-Open No. 8-326038 (Patent Document 1) is configured to cover a matrix region with a roof and move the roof using a crane device having a roof. Therefore, there is a problem that it is necessary to use a large-scale device.

  Accordingly, the present invention automatically covers the concrete placement site with a sheet when rain is expected when continuously placing the face concrete of a concrete facing dam, etc., and treats the rainwater as desired. An object of the present invention is to provide an automatic seat laying cart that can prevent the construction period from being prolonged.

An object of the present invention is to provide an automatic sheet laying cart that can be mounted with a plurality of sheet rolls each having a long sheet wound around an axis and is connected to the upper end of a slip foam via a connecting device. Because
The slip foam is moved in the vertical direction along the surface on which the concrete is to be placed, and the automatic seat laying cart is movable in the vertical direction along with the slip foam along the surface on which the concrete is to be placed. ,
While the automatic sheet laying cart is lowered, the long sheet is supplied from the sheet roll to the surface on which the concrete is to be placed so that the axis of the sheet roll remains on the long sheet. Covering the surface on which the concrete is to be placed,
The sheet roll on which the sheet covering the surface on which the concrete is to be placed is left on the long sheet while the automatic sheet laying cart is raised along the surface on which the concrete is to be placed. This is accomplished by an automatic seat laying cart configured to wind around the axis of the vehicle.

  According to the present invention, the surface on which the concrete is to be placed is automatically formed by the long sheet pulled out from the sheet roll by lowering the automatic sheet laying cart together with the slip form on the surface on which the concrete is placed. Therefore, because it is covered with asphalt emulsion, rainwater flows on the surface and flows into the place where concrete should be placed, and the rainwater accumulates. Even if the rain stops, the accumulated rainwater is drained. Until this time, it is possible to effectively prevent the problem that face concrete cannot be placed and the construction period cannot be prolonged, while the sheet roll is left around the axis of the sheet roll remaining on the long sheet. While winding up, the automatic sheet laying cart is raised to remove the long sheet covering the surface on which the concrete is to be placed. Since it can be automatically wound around the trawl axis and removed from the surface where the concrete is to be placed, there is no need to use a large-scale device or to remove the long sheet manually. Compared with a simple device, the surface on which the concrete is to be placed is covered with a long sheet, and the long sheet is rolled from the surface on which the concrete covered with the long sheet is to be placed. It is possible to automatically wind around the axis.

  In a preferred embodiment of the present invention, a concrete placement unit is provided on the slip foam side of the automatic seat laying cart, which is movable in the vertical direction together with the slip foam, and supplies concrete to a surface on which concrete is placed. It has been.

  According to a preferred embodiment of the present invention, the concrete is supplied to the surface on which the concrete is to be placed by the concrete placing unit while winding the sheet covering the surface on which the concrete is placed by the automatic sheet laying cart. can do.

  In a preferred embodiment of the present invention, the end of the side surface of the long sheet covering the surface on which the concrete is to be placed is fixed to the mold by one of a metal fitting and a hook.

  According to a preferred embodiment of the present invention, the sheet covering the surface on which the concrete is to be placed can withstand strong wind pressure.

  In a preferred embodiment of the present invention, a drainage facility for discharging rainwater that has fallen on the surface of the long sheet out of the mold is provided.

  According to a preferred embodiment of the present invention, it is possible to reliably prevent rainwater from flowing into the surface on which the concrete is to be placed, and on the surface on which the concrete is to be placed during the rain and after the rain has stopped. Since it is no longer necessary to drain the rainwater that has flowed into the plant, it is possible to reliably prevent the construction period from being prolonged.

  In a further preferred embodiment of the present invention, the drainage facility comprises a water collector for guiding rainwater and a drainage hose connected to the water collector.

  In a further embodiment of the present invention, one end of the wire is fixed to a take-up drum provided on the winch, and a wire wound on the take-up drum is attached to the sheave and the slip foam provided on the winch. It winds around the provided horizontal sheave and the other end is fixed to the winch.

  According to a preferred embodiment of the present invention, it is possible to move an automatic seat laying cart up and down at a desired speed with a very simple structure.

  In another preferred embodiment of the present invention, the automatic seat laying cart is located above the slip foam, with the slip foam connected to the upper end thereof along the slope where the concrete is to be placed. It is suspended from a slip-form moving device that is movable in the width direction of the slope with a winch mounted thereon.

  According to the present invention, when face concrete of a concrete facing dam is continuously placed, when the rain is expected, the concrete placement part is automatically covered with the cloth, and the rainwater is treated as desired. Thus, it is possible to provide an automatic seat laying cart that can prevent the construction period from being prolonged.

FIG. 1 is a schematic right side view of a concrete placing system including an automatic sheet laying cart according to a preferred embodiment of the present invention. FIG. 2 is a schematic right side view of the vicinity of the automatic seat laying cart. FIG. 3 is a schematic right side view of the slip foam moving device 9 capable of moving the slip foam. FIG. 4 is a schematic perspective view showing the vicinity of the leading end of the sheet wound around the sheet roll. FIG. 5 is a schematic perspective view of the vicinity of the side portion of the sheet in a state where the sheet supplied from the first sheet roll and the sheet supplied from the next sheet roll overlap each other over a predetermined length. FIG. 6 is a schematic perspective view of the vicinity of one end portion of the axial center of the first sheet roll left on the sheet. FIG. 7 is a schematic cross-sectional view along the line AA in FIG.

  FIG. 1 is a schematic right side view of a concrete placing apparatus including an automatic sheet laying cart according to a preferred embodiment of the present invention, and FIG. 2 is a schematic right side view of the vicinity of the automatic sheet laying cart.

  As shown in FIGS. 1 and 2, a concrete placing apparatus including an automatic sheet laying cart 1 according to a preferred embodiment of the present invention includes an automatic sheet laying cart 1, a pair of rails 2, 2, and a slip foam 3. And a connecting device 4 such as a steel bar for connecting the automatic sheet laying cart 1 to the upper end of the slip foam 3 and a concrete placing unit 5 for placing concrete on the slope of the concrete facing dam.

  Although not shown in FIGS. 1 and 2, the pair of rails 2 and 2 are laid parallel to each other along a vertical direction on a pedestal installed beside the face concrete formwork, and slip. The foam 3 is horizontally mounted on the pair of rails 2 and 2 so that the positions of both ends thereof correspond to the pair of rails 2 and 2, and is configured to run on the pair of rails 2 and 2 in the vertical direction. ing. The slip form 3 includes wheels 3a, and the wheels 3a rotate on the pair of rails 2 and 2 to move.

  Although not shown, the width of the concrete placing unit 5 is larger than the width of the slip foam 3 and is attached to the front shoulder side of the slip foam 3 as shown in FIG. The concrete transported is configured to be placed on the slope.

  The automatic sheet laying cart 1 supplies a sheet 22 on a surface on which concrete is to be placed and covers a reinforcing bar (not shown in FIGS. 1 and 2) on the surface on which the concrete is to be placed. The width is slightly larger than the width of the concrete formwork. The automatic seat laying cart 1 is not provided with a power mechanism for movement, and when moving with the slope facing upward, it is pushed by the slip form 3 and rises on the rails 2 and 2. When moving with the slope facing downward, the slip form 3 is configured to be movable at a desired speed while being prevented from freely falling on the rails 2 and 2 by the slip form 3.

  In FIG. 1 and FIG. 2, what is indicated by reference numeral 8 is a drain hose. The drain hose 8 will be described in detail later.

  FIG. 3 is a schematic right side view of the slip foam moving device 9 capable of moving the slip foam 3 along the slope in a substantially horizontal direction, with the automatic sheet laying cart 1 and the concrete placing unit 5 removed. Is shown.

  As shown in FIG. 1 and FIG. 3, the slip form moving device 9 includes a wire 6 wound around the take-up drum 11 while one end is fixed to the take-up drum 11 of the winch 10. As shown in FIG. 3, the wire 6 is wound around a sheave 12 provided on the winch 10 and a horizontal sheave 13 provided on the slip foam 3, and the other end of the wire 6 is fixed to the winch 10. .

  Accordingly, by pulling out the wire 6 from the winding drum 11 of the winch 10, the slip form 3 is moved downward on the pair of rails 2, 2, and the winding drum 11 of the winch 10 is rotated to wind the wire 6. By taking, the slip foam 3 is configured to move upward toward the shoulder.

  Here, the slip-form moving device 9 equipped with the winch 10, the winding drum 11 and the sheave 12 is movable in a substantially horizontal direction along rails 41 and 41 installed on the top 40 of the dam body. It is configured.

  The automatic sheet laying cart 1 is equipped with, for example, a plurality of sheet rolls 20 wound with a long sheet having a length of 30 m, and when the laying operation is not performed, the automatic sheet laying cart 1 is shown in FIGS. As shown in FIG.

  FIG. 4 is a schematic perspective view showing the vicinity of the leading end of the sheet 22 wound around the sheet roll 20.

  As shown in FIG. 4, each sheet roll 20 is generated by having one end portion 22 a of the sheet 22 engaged with the engaging portion 21 a of the shaft center 21 and the sheet 22 being wound around the shaft center 21. ing.

  As shown in FIG. 2, the automatic sheet laying cart 1 is provided with stage portions projecting on both sides, and the stage roll is moved from the standby position 14 to the sheet supply position 15 by moving the sheet roll 20 from the sheet roll 20. A sheet exchanging carriage 32 is provided, which is equipped with a sheet shaft rotating motor 31 that pulls out the sheet 22 and winds the pulled sheet 22 around the axis 21 of the sheet roll 20. The sheet exchanging carriage 32 is configured to be movable on the stage portion in the direction in which the shaft centers 21 of the sheet rolls 20 are arranged by an exchanging carriage moving motor 33 located at the lower portion of the stage portion.

  The rotational force of the seat shaft rotating motor 31 mounted on the seat replacement carriage 32 is transmitted to the shaft center 21 of the sheet roll 20 via a rotating shaft (not shown) that transmits the rotational force from the motor rotating shaft. The The rotating shaft and the shaft center 21 of the sheet roll 20 are coupled by a cam mechanism, and the rotational force is transmitted from the rotating shaft to the shaft center 21 of the sheet roll 20 by coupling and rotating the respective cams. It is configured.

  When the sheet roll 20 closest to the slope is moved from the standby position 14 to the sheet supply position 15, for example, the sheet exchange carriage 32 is moved so that the axis 21 of the rotary shaft and the sheet roll 20 is concentric. It is possible to use a method such as positioning the cam on the rotating shaft side so that the hand pushing lever 34 of the link mechanism is tilted toward the sheet roll 20 side.

  As shown in FIG. 2, when the automatic sheet laying cart 1 is lowered on the slope by the slip form 3, while applying a rotational force to the sheet 22 from the sheet roll 20 located at the sheet supply position 15, The sheet 22 that has been pulled out so as not to become wrinkles, covers the surface on which the concrete is to be placed, and covers the surface on which the concrete is to be placed when the slip foam 3 is raised on the slope is pivoted. It is configured to wind around the core 21.

  The concrete placing device including the automatic sheet laying cart 1 according to the preferred embodiment of the present invention configured as described above is used to place face concrete in the following manner when it is raining or when rain is expected. The surface to be provided is configured to be covered with the sheet 22.

  First, the exchange carriage moving motor 33 provided in the automatic sheet laying carriage 1 is driven, and the sheet roll 20 around which the sheet 22 is wound is moved from the standby position 14 to the sheet supply position 15 by the sheet exchange carriage 32. Is done.

  Next, the wire 6 wound around the take-up drum 11 of the winch 10 is unwound by a driving means (not shown), and the slip foam 3 descends on the slope. At the same time, the automatic sheet laying cart 1 and the concrete placing unit 5 together with the slip form 3 descend on the slope. At this time, if it is raining or if it is likely to rain soon, the slip form 3, the concrete placing unit 5 and the automatic sheet laying cart 1 are covered with a cover sheet 30 as shown in FIG. It has been broken.

  Thus, when the automatic sheet laying cart 1 reaches the starting point position to be covered with the sheet 22 on the surface on which the concrete is to be placed, the rotation of the winding drum 11 of the winch 10 is stopped by the driving means (not shown), and the slip The descent of the foam 3 is stopped, and the movement of the automatic sheet laying cart 1 and the concrete placing unit 5 is also stopped as the slip foam 3 is stopped.

  Next, the sheet shaft rotation motor 31 is driven, and the rotation force of the sheet shaft rotation motor 31 is transmitted through the rotation shaft (not shown) that transmits the rotation force from the motor rotation shaft. Transmitted to the heart 21. As a result, the sheet 22 of the sheet roll 20 located at the sheet supply position 15 is unwound, and the tip of the sheet roll 20 is located above a reinforcing bar (not shown) disposed on the surface on which concrete is to be placed. It is sent out and fixed at a predetermined starting point position.

  When the leading end of the sheet 22 is fixed at a predetermined starting position on the surface on which the concrete is to be placed, the wire 6 wound around the winding drum 11 of the winch 10 is unwound by a driving means (not shown). Then, the slip form 3 is lowered, and the automatic sheet laying cart 1 and the concrete placing device 5 are lowered accordingly.

  As the slip form 3 descends, the automatic sheet laying cart 1 descends, the sheet 22 is pulled out from the sheet roll 20 and sent out onto the surface on which the concrete is to be placed, and placed on the surface on which the concrete is to be placed. The upper part of the reinforcing bar is covered with the sheet 22.

  Thus, as a result of the sheet 22 being pulled out from the sheet roll 20 and the upper part of the reinforcing bar arranged on the surface on which the concrete is to be placed being covered by the sheet 22, the sheet wound around the first sheet roll 20 When all of 22 are pulled out, the replacement carriage moving motor 33 provided in the automatic sheet laying carriage 1 is driven, and the next sheet roll 20 is moved from the standby position 14 to the sheet supply position 15 by the sheet exchange carriage 32. The

  When the next sheet roll 20 reaches the sheet supply position 15, the sheet shaft rotation motor 31 is driven, and the rotation force of the sheet shaft rotation motor 31 transmits the rotation force from the motor rotation shaft (see FIG. (Not shown) and transmitted to the axis 21 of the sheet roll 20. As a result, until the sheet 22 of the next sheet roll 20 located at the sheet supply position 15 is unwound and overlaps with the sheet 22 supplied from the first sheet roll 20 over a predetermined length, The sheet 22 is sent out. The sheet 22 pulled out from the previous sheet roll 20 and the sheet 22 pulled out from the next sheet roll 20 are held in a state of being overlapped over a predetermined length by using, for example, Velcro (registered trademark) or the like. The

  Thus, the next sheet 22 casts concrete in a state where the sheet 22 drawn from the previous sheet roll 20 and the sheet 22 drawn from the next sheet roll 20 are overlapped over a predetermined length. Since it is configured so as to cover the power surface, even if heavy rain falls after laying the sheet 22, it effectively prevents rainwater from flowing into the surface where the concrete is to be placed from between the sheets 22. It becomes possible.

  FIG. 5 shows the sheet 22 unwound from the next sheet roll 20 on the sheet 22 uncovered from the first sheet roll 20 and covering the top of the reinforcing bars 25 arranged on the surface on which the concrete is to be placed. Is a schematic perspective view of the vicinity of the side portion of the sheet 22 in a state of being overlapped with the sheet 22 supplied from the first sheet roll 20 over a predetermined length.

  As shown in FIG. 5, the sheet 22 drawn from the first sheet roll 20 and the sheet 22 drawn from the next sheet roll 20 overlap each other over a predetermined length on the surface on which concrete is to be placed. Since the upper part of the disposed reinforcing bars 25 is covered, it is possible to prevent rainwater from entering the place where the concrete is to be placed even if it rains.

  Further, as shown in FIG. 5, the side portion of the sheet 22 is fixed to the mold frame 27 by a fixing bracket 26 so as to withstand wind pressure and the like. The sheet 22 is fixed by the fixing bracket 26 by human power.

  As shown in FIG. 5, the axis 21 of the first sheet roll 20 is configured to remain on the sheet 22 located above the reinforcing bars 25 arranged on the surface on which the concrete is to be placed.

  Thus, the automatic sheet laying cart 1 is moved downward from above, the upper part of the reinforcing bars 25 arranged on the slope of the concrete facing dam is covered with the sheet 22, and the axis 21 of the first sheet roll 20 is covered. Since it is configured to remain on the sheet 22 positioned above the reinforcing bar 25 arranged on the surface on which concrete is to be placed, rainwater flows downward on the sheet 22 when it rains, and the first sheet roll 20 A water reservoir 28 is formed on the sheet 22 on the upper side of the shaft center 21.

  6 is a schematic perspective view of the vicinity of one end portion of the axis 21 of the first sheet roll 20 left on the sheet 22, and FIG. 7 is a schematic cross-sectional view taken along line AA of FIG. .

  As shown in FIGS. 6 and 7, the upper part of the axis 21 of the first sheet roll 20 is dropped onto the reinforcing bar 25 in contact with the side part of the mold 27 at the part where the water reservoir 28 is formed. Thus, the water collector 29 is arranged, and the drainage hose 8 for discharging the rainwater accumulated in the water collector 29 to the outside of the mold 27 is connected to the water collector 29. Here, the water collector 29 is installed when switching the sheet roll 20 around which the sheet 22 covering the surface on which the concrete is to be placed is wound.

  Therefore, the water in the water reservoir 28 formed on the sheet 22 on the upper side of the axis 21 of the first sheet roll 20 is collected by the water collector 29 and drained by the drain hose 8.

  Here, the water collector 29 is arranged by human power so as to be supported by the shaft center 21 of the sheet roll 20, and the drainage hose 8 is connected to the water collector 29 by human power.

  Next, the upper part of the reinforcing bar 25 is covered by the sheet 22 drawn out from the second sheet roll 20, and the axis 21 of the first sheet roll 20 is located above the reinforcing bar 25. The water collector 29 and the drainage hose 8 are also left in the positions shown in FIG.

  Similarly, the sheet 22 is pulled out from the second sheet roll 20, covers the upper part of the reinforcing bar 25 arranged on the surface on which the concrete is to be placed, and is wound around the second sheet roll 20. When all the sheets 22 are pulled out, the replacement carriage moving motor 33 provided in the automatic sheet laying carriage 1 is driven, and the next sheet roll 20 is moved from the standby position 14 to the sheet supply position 15 by the sheet exchange carriage 32. Is done.

  When the next sheet roll 20 reaches the sheet supply position 15, the sheet 22 is released from the next sheet roll 20 in the same manner as described above, and above the reinforcing bars 25 arranged on the surface on which the concrete is to be placed. The sheet 22 supplied from the second sheet roll 20 and the upper part of the reinforcing bars 25 arranged on the surface on which the concrete is to be placed are covered in a state where the sheet 22 is overlapped over a predetermined length.

  At this time, when it is raining, rainwater flows downward on the sheet 22, and a water pool 28 is formed on the upper side of the axis 21 of the sheet roll 20 from which the sheet 22 has been pulled out. However, the rain water collected in the water reservoir 28 is drained by the water collector 29 attached above the automatic seat laying cart 1 and the drainage hose 8 connected to the water collector 29.

  Further, when all the sheets 22 wound around the third sheet roll 20 are pulled out, the next sheet roll 20 is moved to the sheet supply position 15 by the exchange carriage moving motor 33, and the next sheet roll 20 is moved. Then, the sheet 22 is unwound and supplied above the reinforcing bars 25 arranged on the surface on which the concrete is to be placed.

  When the above operations are repeated and all the sheet rolls 20 mounted on the automatic sheet laying cart 1 are used up, or when all the surfaces on which concrete is to be placed are covered with the sheets 22, one cycle of the automatic sheet laying process. Is completed, the slip form 3 is stopped, and the concrete placing unit 5 and the automatic sheet laying cart 1 are also stopped.

  Here, even when all of the plurality of sheet rolls 20 mounted on the automatic sheet laying cart 1 are used up, the surface on which the slope concrete is to be placed is not completely covered. A plurality of sheet rolls 20 are mounted, and in the same manner as described above, the sheet 22 is supplied from the sheet roll 20 to the surface on which the slope concrete is to be placed, and the slope 22 concrete is placed by the sheet 22. The surface to be covered is configured to be covered.

  On the other hand, when placing concrete, the sheet 22 is collected as follows, and the concrete is placed on the reinforcing bar 25 by the concrete placing unit 5.

  First, the winding drum 11 of the winch 10 is rotated by a driving means (not shown), and the automatic sheet laying cart 1 attached above the slip foam 3 via the slip foam 3 and the connecting device 4 is converted into a legal form. The sheet roll 20 is set on the lower end portion of the sheet 22 covering the surface on which the concrete is to be placed, and is left on the sheet 22 above the reinforcing bar 25 disposed on the surface on which the concrete is to be placed. The upper side of the shaft center 21 of the seat roll 20 located on the lowermost side of the shaft center 21 and the drainage hose 8 connected to the water collector 29 removed by human power Thus, either the seat shaft or the transfer motor 31 is driven, and the both ends of the shaft center 21 of the sheet roll 20 are gripped by the automatic sheet laying carriage 1. At this time, when it is raining, the slip form 3, the concrete placing device 5 and the automatic sheet laying cart 1 are covered with the cover sheet 30.

  Subsequently, the winding drum 11 of the winch 10 is rotated by a driving means (not shown), the wire 6 is wound up, and the slip foam 3 is moved upward toward the shoulder. As the slip form 3 moves upward, the concrete placing unit 5 and the automatic sheet laying cart 1 are also moved upward.

  The automatic sheet laying cart 1 drives the seat shaft rotation motor 31 to grip and rotate the shaft 21 positioned at the lowest position, thereby winding the seat 22 around the shaft 21.

  The automatic sheet laying cart 1 moves upward while winding the seat 22 around the axis 21 as the slip form 3 moves upward.

  On the other hand, the concrete placing unit 5 removes the sheet 22 by the automatic sheet laying carriage 1, conveys the concrete onto the exposed reinforcing bars 25, and places the concrete.

Thus, the automatic sheet laying cart 1 winds the sheet 22 wound around the lowermost axis 21 before laying the sheet 22 around the lowermost axis 21. When the winding operation is completed, the exchange carriage moving motor 33 provided in the automatic sheet laying carriage 1 is driven, and the sheet roll 20 in which the axis 21 is located at the lowest position is driven by the sheet exchange carriage 32 in FIG. 2 and moved to the standby position 14 shown in FIG. 2 and then connected to the water collector 29 and the water collector 29 located on the upper side of the axis 21 located second from the bottom. After the drainage hose 8 is removed by human power, the seat shaft rotating motor 31 is driven to grip and rotate the shaft center 21 located second from the bottom, thereby rotating the seat 22 around the shaft center 21. Winding Take.

  On the other hand, the concrete placing unit 5 removes the sheet 22 by the automatic sheet laying carriage 1, conveys the concrete to the exposed reinforcing bars 25, and places the concrete.

  Such an operation is repeated, and all the sheets 22 covering the slope on which the concrete is to be placed are wound around the shaft 21 by the automatic sheet laying cart 1, and the concrete is placed by the concrete placing unit 5. When concrete is cast on the slope, the concrete facing work for the concrete facing dam is completed.

  According to this embodiment, a plurality of sheet rolls 20 are mounted on the automatic sheet laying cart 1 that is connected to the slip form 3 via the connecting device 4 and is positioned above the slip form 3. When the sheet laying cart 1 descends on the slope where the concrete of the concrete facing dam is to be placed, the sheet 22 is drawn from the sheet roll 20 to cover the surface on which the concrete is to be placed. Can prevent rainwater from flowing into the part where concrete is to be placed, and it is not necessary to drain the rainwater that has accumulated in the part where concrete is to be placed. It becomes possible to do.

  In addition, according to the present embodiment, the upper surface of the surface on which the concrete is to be placed is covered with the sheet 22 and when it rains, the rain rolls leave the upper part of the shaft center 21 of the sheet roll 20 left on the sheet 22. A water reservoir 28 is formed in the water reservoir 28, and the rainwater in the water reservoir 28 is guided to a water collector 29 disposed below the sheet 22 on the upper side of the shaft center 21 of the sheet roll 20 and connected to the water collector 29. Since the water is drained by the drainage hose 8, it becomes possible to start placing concrete in a short time after the rain stops.

  Further, according to the present embodiment, the concrete is placed in a state where the sheet 22 drawn from the previous sheet roll 20 and the sheet 22 drawn from the next sheet roll 20 are overlapped over a predetermined length. Since the surface to be covered is covered, it is possible to effectively prevent rainwater from flowing into the surface on which the concrete is to be placed even if heavy rain falls after the sheet 22 is laid.

  Furthermore, according to this embodiment, the concrete sheet is raised by raising the automatic sheet laying cart 1 while winding the sheet 22 around the axis 21 of the sheet roll 20 left above the surface on which the concrete is to be placed. Since the sheet 22 covering the surface to be placed can be automatically wound around the axis 21 of the sheet roll 20 and the concrete can be removed from the surface to be placed, there is no need to use a large apparatus. In addition, it is not necessary to remove the sheet 22 manually, and the surface on which the concrete is to be placed is efficiently covered with the sheet 22 and the concrete covered with the sheet 22 is placed with a simpler device than in the past. It becomes possible to automatically wind the sheet 22 around the axis 21 of the sheet roll from the surface to be processed.

  Furthermore, conventionally, the slope where concrete should be placed is manually covered with the sheet 22, but the portion of the concrete facing dam where the concrete is to be placed is not only inclined by about 30 degrees, but also on the entire surface. Since the reinforcing bars 25 are assembled, there is a risk of slipping off. However, according to this embodiment, the slope portion where the concrete is to be placed is automatically covered by the sheet 22, and therefore the danger of work. It is possible to greatly reduce the performance.

  Also in this embodiment, when the sheet 22 is laid, the sheet 22 is manually attached to the mold 27 using the fixing bracket 26, and when the sheet 22 is collected, the water collector 29 and the drainage are manually removed. Although the hose 8 has been removed, since all of these are only simple operations, the portion of the concrete facing dam where the concrete is to be placed is not only inclined at about 30 degrees, but also the rebar 25 is assembled on the entire surface. Therefore, even if there is a risk of slipping, the risk of work can be reduced.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

  For example, in the above embodiment, the face concrete placement of the concrete facing dam has been described. However, the present invention is not limited to the face concrete placement of the concrete facing dam, and the concrete other than the concrete placement of the concrete facing dam. It can also be applied to placement.

  Further, in the above embodiment, the automatic sheet laying cart 1 is raised, and the concrete is placed by the concrete placing unit 5 while the sheet 22 covering the slope on which the concrete is to be placed is wound around the shaft 21. Although the automatic sheet laying cart 1 is raised, the concrete is driven by the concrete placing unit 5 while the sheet 22 covering the slope on which the concrete is to be placed is wound around the shaft 21. It is not always necessary to set up, and after winding the sheet 22 by the automatic sheet laying cart 1, the concrete may be placed by the concrete placing unit 5.

  Furthermore, in the said embodiment, although a pair of rails 2 and 2 are laid on the stand by the side of the formwork 27, you may make it lay on the slope.

  Moreover, in the said embodiment, although steel bars are used as the connection apparatus 4, it is not necessarily required to form the connection apparatus 4 with steel bars.

  Furthermore, in the above-described embodiment, the side portion of the sheet 22 is fixed to the mold frame 27 by the fixing metal fitting 26, but it is not always necessary to fix the side portion of the sheet 22 to the mold frame 27 by the fixing metal fitting 26. Instead, the side portion of the sheet 22 may be fixed to the formwork 27 using a hook instead of the fixing metal fitting 26.

DESCRIPTION OF SYMBOLS 1 Automatic sheet laying cart 2, 2 Rail 3 Slip foam 3a Slip foam wheel 4 Coupling device 5 Concrete placing device 6 Wire 8 Drain hose 9 Slip foam moving device 10 Winch 11 Winding drum 12 Sheave 13 Horizontal sheave 14 Sheet roll standby Position 15 Sheet supply position 20 Sheet roll 21 Sheet roll shaft center 21a Shaft center engaging portion 22 Sheet 22a One end 25 of sheet 25 Reinforcing bar 26 Fixing bracket 27 Form 28 Water reservoir 29 Water collector 30 Cover sheet 31 Sheet Shaft rotating motor 32 Sheet exchanging cart 33 Exchange cart moving motor 34 Hand lever 40 Rail top 41 Rail

Claims (3)

Each can be mounted with a plurality of sheet rolls with a long sheet wound around an axis, and is an automatic sheet laying cart connected to the upper end of the slip form via a connecting device,
The slip foam is moved in the vertical direction along the surface on which the concrete is to be placed, and the automatic seat laying cart is movable in the vertical direction along with the slip foam along the surface on which the concrete is to be placed. ,
While the automatic sheet laying cart is lowered, the long sheet is supplied from the sheet roll to the surface on which the concrete is to be placed so that the axis of the sheet roll remains on the long sheet. Covering the surface on which the concrete is to be placed,
The sheet roll on which the sheet covering the surface on which the concrete is to be placed is left on the long sheet while the automatic sheet laying cart is raised along the surface on which the concrete is to be placed. Automatic seat laying cart configured to wind around the axis of the car. The concrete sheet placing unit is provided on the slip foam side of the automatic sheet laying cart, and is provided with a concrete placing unit that can move up and down together with the slip form and supplies concrete to a surface on which concrete is placed. Item 2. The automatic seat laying cart according to item 1. The said slip foam is suspended from the slip foam moving apparatus which can move to the width direction of the said slope which mounts the winch located above the said slip foam. Automatic seat laying cart.

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