Form unit for waterway

Abstract

To provide a form unit for a waterway capable of efficiently vibrating concrete in a form part without impeding the flow of concrete in a supply part.SOLUTION: In this form unit for a waterway, a drain opening forming mold and a waterway forming mold hang down from upper surface forms 50a, 50b, and do not have a side wall. The upper surface forms 50a, 50b close an upper surface opening of a groove 5, and concrete is filled in the groove 5. Therefore, a gutter 16 having a tubular waterway 12 can be continuously constructed in the groove 5 having a width almost equal to the width of the gutter 16. In addition, in this form unit for a waterway, a transmission member 34 that transmits power to a vibration device 30 passes through a first waterway forming mold 56a. Therefore, the vibration device 30 is positioned horizontally below a supply part 40, and a body part of the vibration device 30 that vibrates the most can be positioned in the center part of the groove 5. This allows the vibration device 30 to maximize its capacity and vibration effect, and the supplied concrete can be vibrated efficiently.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a form unit for a waterway that moves together with a construction vehicle while pouring concrete to construct a tubular waterway in a trench. [Background technology]

[0002] For example, in tunnels, roads, etc. where vehicles can pass, gutters are constructed along the edges of roads that have tubular water channels inside and drainage outlets on the top surface to drain rainwater, etc. When constructing such gutters, the applicants of the present application have made the inventions described in the following [Patent Document 1] and [Patent Document 2], in which concrete is filled into a formwork while moving with a construction vehicle, and a gutter with a tubular water channel is continuously formed.

[0003] Here, when a gutter is to be formed later for repair or renovation on a road etc. where the road surface has already been completed, the area where the gutter is to be formed is excavated to form a trench, and the gutter is then formed inside this trench. However, the inventions described in the above-mentioned [Patent Document 1] and [Patent Document 2] are for above-ground construction in which the gutter is constructed on the ground before the road surface is constructed, and the dimensions of the formwork are large, making it difficult to construct the gutter in a narrow trench. In response to this problem, the following [Patent Document 3] discloses an invention relating to a waterway molding formwork compatible with underground drop construction, which allows the construction of a gutter inside an excavated trench. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 5-171676 [Patent Document 2] Japanese Patent Application Publication No. 5-171677 [Patent Document 3] JP 2002-339445 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the invention described in [Patent Document 3], the vibration device that vibrates the concrete is installed through the supply part that supplies the concrete, which causes problems such as impeding the flow of concrete and wearing out the transmission member that transmits power to the vibration device due to friction with the concrete. In addition, cleaning is troublesome, and there is a problem that the amount of concrete remaining in the supply part increases. Furthermore, since the vibration device is installed through the supply part, the installation direction of the vibration device is vertical. However, usually, a reinforcing bar 6 with an approximately U-shaped shape with an open upper part as shown in FIG. 3(b) is installed in the groove 5. In this case, if the installation direction of the vibration device is vertical, it is necessary to pass the vibration device through the gap at the top of the reinforcing bar 6, and there is a high risk that the vibration device and the reinforcing bar 6 will come into contact and cause a malfunction. In addition, when constructing a gutter 16 with a narrow drain outlet 14, the upper gap of the reinforcing bar 6 is also narrow, and even if the vibration device and the reinforcing bar 6 do not come into direct contact, the vibration of the vibration device will be transmitted to the reinforcing bar 6 and may interfere with each other, causing a malfunction. Furthermore, a standard rod-shaped vibration device is generally characterized in that the tip of the vibrating body does not vibrate. Therefore, when the vibration device is installed vertically, in order to transmit vibration to the bottom of the structure, it is necessary to insert the vibration device deep into the groove 5 until its tip is close to the bottom of the groove 5. However, because reinforcing bars 6 exist in the groove 5, the vibration device cannot be inserted deep inside, so the tip of the vibration device that does not vibrate is located almost in the center of the groove 5 (formwork section), and the body part of the vibration device that vibrates the most is located at the top or supply part of the groove 5 (formwork section). As a result, not only is it not possible to effectively utilize the capacity of the vibration device, but there is also the possibility that the non-vibrating part of the tip of the vibration device will be located in the center, resulting in a non-vibration area where vibration is not transmitted to the bottom of the groove 5.

[0006] The present invention has been made in consideration of the above-mentioned circumstances, and has an object to provide a formwork unit for a waterway that can efficiently vibrate the concrete in the formwork section without impeding the flow of concrete in the supply section. [Means for solving the problem]

[0007] The present invention relates to (1) A waterway formwork unit that is fixed to a mobile construction vehicle 20 and fills concrete while moving together with the construction vehicle 20 to construct a side gutter 16 having a tubular waterway 12 in a trench 5, A formwork section for constructing the gutter 16 and a supply section 40 for supplying concrete to the formwork section, The formwork section includes a first upper formwork 50a that closes the upper surface of the groove 5 and is located in front of the supply section 40, a second upper formwork 50b that closes the upper surface of the groove 5 and is located in the rear of the supply section 40, a first drain outlet forming mold 54a that hangs down from the first upper formwork 50a, a second drain outlet forming mold 54b that hangs down from the second upper formwork 50b, a first water channel forming mold 56a that is substantially cylindrical and fixed to the lower end of the first drain outlet forming mold 54a, a second water channel forming mold 56b that is substantially cylindrical and fixed to the lower end of the second drain outlet forming mold 54b, a vibration device 30 that is located below the supply section 40 and applies vibration to the supplied concrete, and a transmission member 34 that transmits power to the vibration device 30. The above problem is solved by providing a water channel formwork unit 80, characterized in that the first water channel forming mold 56a has a through hole 58 in the axial direction, the transmission member 34 passes through the through hole 58, and the vibration device 30 protrudes from the rear end of the first water channel forming mold 56a and is positioned within the supply section 40. (2) The above problem is solved by providing a water channel formwork unit 80 as described in (1) above, characterized in that the vibration device 30 is located between the rear end surface of the first water channel forming mold 56a and the front end surface of the second water channel forming mold 56b and fits within an area A that does not extend beyond the peripheral surfaces of the first water channel forming mold 56a and the second water channel forming mold 56b when viewed in the axial direction of the first water channel forming mold 56a and the second water channel forming mold 56b. (3) The above problem is solved by providing a channel formwork unit 80 as described in (1) above, characterized in that the vibration device 30 is located between the rear end surface of the first channel forming mold 56a and the front end surface of the second channel forming mold 56b, fits within an area A that does not extend beyond the peripheral surfaces of the first channel forming mold 56a and the second channel forming mold 56b when viewed from the axial direction of the first channel forming mold 56a and the second channel forming mold 56b, and is fixed facing horizontally or diagonally downward at an installation angle in the range of 0° to -30° with respect to the traveling direction of the formwork section. Effect of the Invention

[0008] In the waterway formwork unit according to the present invention, the transmission member of the vibration device passes through the inside of the first waterway forming mold at the front side of the substantially cylindrical shape. Therefore, the vibration device is positioned sideways, and the body part of the vibration device that vibrates the most can be positioned at the substantially center part of the groove. This allows the vibration effect of the vibration device to be maximized, and the supplied concrete can be vibrated efficiently. In addition, the vibration device does not come into contact with the reinforcing bars, and a high-quality gutter can be constructed. Furthermore, since the transmission member passes through the first waterway forming mold, the flow of concrete in the supply section and the formwork section is not hindered, and wear of the transmission member can be prevented. [Brief description of the drawings]

[0009] [Figure 1] 1A to 1C are diagrams illustrating a method of using the waterway formwork unit according to the present invention. [Diagram 2] FIG. 2 is a diagram showing a waterway formwork unit according to the present invention. [Diagram 3] FIG. 2 is a diagram illustrating a construction target of the waterway formwork unit according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] An embodiment of a waterway form unit 80 according to the present invention will be described with reference to the drawings. Note that in Fig. 1, a concrete supply vehicle and poured concrete are omitted from the illustration.

[0011] First, the waterway formwork unit 80 of the present invention is fixed to a drivable construction vehicle 20 as shown in Figure 1, and while moving together with the construction vehicle 20, it continuously constructs a side gutter 16 having a tubular waterway 12 as shown in Figure 3(c) within a trench 5 formed by excavation or the like.

[0012] Next, the waterway formwork unit 80 according to the present invention will be described. Here, Fig. 2(a), (b), (c), and (d) are a side view, a bottom view, a rear view (view from the rear of the waterway formwork unit 80 in the traveling direction) and a schematic XX cross-sectional view of the waterway formwork unit 80 according to the present invention. Note that the white arrow in Fig. 2 indicates the traveling direction of the construction vehicle 20 and the waterway formwork unit 80, and the front side of the waterway formwork unit 80 means the front based on this traveling direction. Also, the rear side of the waterway formwork unit 80 means the rear based on this traveling direction.

[0013] The channel formwork unit 80 according to the present invention has a formwork section for constructing a tubular channel 12, and a supply section 40 for supplying concrete to the formwork section. The formwork section also has a first upper surface formwork 50a located in front of the supply section 40, a second upper surface formwork 50b located in the rear of the supply section 40, a first drain outlet forming mold 54a hanging down from the first upper surface formwork 50a, a second drain outlet forming mold 54b hanging down from the second upper surface formwork 50b, a first channel forming mold 56a fixed to the lower end of the first drain outlet forming mold 54a, a second channel forming mold 56b fixed to the lower end of the second drain outlet forming mold 54b, a vibration device 30 located below the supply section 40 for vibrating the supplied concrete, and a transmission member 34 for transmitting power to the vibration device 30.

[0014] The supply section 40 is installed toward the front center of the waterway form unit 80, with its lower part connected to the form section and its upper part opening as a hopper section. As described above, the vibration device 30 is located below the supply section 40. When the waterway form unit 80 is in use, the supply end of a concrete supply device (not shown) is located above the supply section 40 (hopper section), and ready-mixed concrete is supplied from the concrete supply device into the supply section 40.

[0015] As described above, the formwork section has the first upper surface formwork 50a and the second upper surface formwork 50b, which function to cover the upper surface of the trench 5 formed by excavation or the like, as shown in Fig. 1(a). Note that the waterway formwork unit 80 according to the present invention does not have side walls as conventional formwork units have, since the waterway 12 is constructed by filling the trench 5 with concrete.

[0016] In addition, the first drain outlet forming mold 54a and the second drain outlet forming mold 54b hanging down from the first and second top surface formworks 50a, 50b respectively connect the first top surface formwork 50a and the second top surface formwork 50b to the first water channel forming mold 56a and the second water channel forming mold 56b respectively, and serve as forms for the drain outlet 14 that penetrates from the top surface of the gutter 16 to the water channel 12.

[0017] The first water channel forming mold 56a and the second water channel forming mold 56b have their axes parallel to the long side direction of the formwork part, and are hung and held below the upper formwork 50a, 50b via the drainage outlet forming molds 54a, 54b, respectively. These water channel forming molds 56a, 56b then become the formwork for the tubular water channel 12 to be formed in the gutter 16. For this reason, the shape of the water channel forming molds 56a, 56b varies depending on the required shape of the water channel 12, but is generally roughly circular or elliptical, and therefore the water channel forming molds 56a, 56b have a roughly cylindrical shape such as a cylindrical shape or an elliptical cylindrical shape. In the water channel formwork unit 80 according to the present invention, at least the first water channel forming mold 56a has a through hole 58 in the axial direction in order to pass the transmission member 34 of the vibration device 30 through the inside of the first water channel forming mold 56a, and preferably uses a cylindrical member.

[0018] In addition, it is preferable to provide the formwork with a reinforcing bar holder 32 that hooks the reinforcing bar 6 for the gutter placed in the gutter 5 and holds it in a hollow state. The reinforcing bar holder 32 is a metal rod with sharp ends, and is installed in the first water channel forming mold 56a and the second water channel forming mold 56b via mounting members 32a. At this time, the mounting members 32a have a shape that avoids the reinforcing bar 6 so as not to interfere with it.

[0019] The vibration device 30 may be a known concrete vibrator such as a hydraulic or electric vibrator. The transmission member 34 for transmitting power to the vibration device 30 is a hydraulic tube when the vibration device 30 is a hydraulic concrete vibrator, and is a power cable when the vibration device 30 is an electric concrete vibrator. In the channel formwork unit 80 according to the present invention, the vibration device 30 is provided so as to protrude rearward from the rear end of the first channel forming mold 56a. Thus, the vibration device 30 is located below the supply section 40 between the first channel forming mold 56a and the second channel forming mold 56b. The transmission member 34 of the vibration device 30 is drawn out from the front end of the first channel forming mold 56a through the through hole 58 in the first channel forming mold 56a, and is connected to a power source (not shown) installed on the construction vehicle 20 side. In this configuration, the transmission member 34 is pulled out from the front end of the first water channel forming mold 56a, which is not filled with concrete, so the transmission member 34 does not come into contact with the concrete, and the transmission member 34 does not hinder the flow of concrete in the supply section 40 and the formwork section. Also, because the transmission member 34 does not come into contact with the concrete, the transmission member 34 does not wear out due to friction with the concrete. Furthermore, because the transmission member 34 does not come into contact with the concrete, not only is it easier to clean the formwork section, but the amount of concrete remaining in the formwork section can be reduced because concrete does not adhere to the transmission member 34.

[0020] The vibration device 30 is preferably installed in the region A between the rear end surface of the first water channel forming mold 56a and the front end surface of the second water channel forming mold 56b, specifically, between the water channel forming molds 56a and 56b shown by the dashed lines in Figs. 2(a) and (b), and is approximately cylindrical in shape and does not protrude from the circumferential surface of the water channel forming molds 56a and 56b when viewed from the axial direction. Here, if the vibration device 30 is installed protruding from the region A, the reinforcing bar 6 needs to be designed taking into consideration the protrusion of the vibration device 30 so that the vibration device 30 does not come into contact with the reinforcing bar 6. However, by placing the vibration device 30 within the region A, it is only necessary to consider the contact of the reinforcing bar 6 with the water channel forming molds 56a and 56b, and the design and construction of the reinforcing bar 6 on site can be performed more easily.

[0021] In addition, in the waterway formwork unit 80 according to the present invention, the transmission member 34 passes through the inside of the first waterway forming mold 56a, so the vibration device 30 can be installed in a substantially horizontal direction. As described above, if the installation direction of the vibration device 30 is vertical, the vibration device 30 needs to pass through the gap above the reinforcing bar 6, and there is a high risk of the vibration device 30 coming into contact with the reinforcing bar 6. In addition, the vibration device 30 cannot be inserted deeply, and the tip of the vibration device 30 that does not vibrate is located almost in the center of the groove 5 (formwork part), and the body part of the vibration device 30 that vibrates the most is located at the top of the groove 5 (formwork part) or in the supply part 40, which is extremely inefficient. Furthermore, since the non-vibrating part of the tip of the vibration device 30 is located in the center, there is a possibility that the vibration will not be transmitted to the bottom of the groove 5. In contrast, in the waterway formwork unit 80 according to the present invention, the vibration device 30 can be installed in a substantially horizontal direction, so there is no risk of contact with the reinforcing bar 6. Moreover, by positioning the vibration device 30 horizontally below the supply section 40, the body part of the vibration device 30 that vibrates the most is located in the center of the groove 5 (formwork section). This allows the vibration device 30 to maximize its capacity and vibration effect. It is said that the vibration range of a typical rod-shaped vibration device 30 is 4 to 6 times the diameter of the vibration device 30 in the radial direction. Therefore, by installing the vibration device 30 horizontally, sufficient vibration can be transmitted to the bottom of the groove 5. This allows the concrete to be vibrated extremely efficiently. The installation angle of the vibration device 30 is preferably fixed at an angle of 0° to -30° with respect to the moving direction of the formwork section within the range of area A, facing diagonally downward. In this configuration, the vibration direction of the vibration device 30 deviates from the axis (normal direction) of the water channel forming molds 56a and 56b, so that the concrete in the formwork section can be vibrated more efficiently.

[0022] Next, the method of use and operation of the waterway formwork unit 80 according to the present invention will be described. First, as shown in Fig. 3(a), the area where the gutter 16 will be formed is excavated, and a groove 5 is formed along the road surface 3. Next, as shown in Fig. 3(b) and Fig. 3(b'), a predetermined reinforcing bar 6 is placed in the groove 5. Note that Fig. 3(b') is a schematic diagram of the groove 5 as viewed from the side. The reinforcing bar 6 has a roughly U-shape with an open upper portion when viewed from the end face direction, as shown in Fig. 3(b).

[0023] Next, the waterway formwork unit 80 is fixed to the construction vehicle 20. Then, the construction vehicle 20 is moved to position the waterway formwork unit 80 above the trench 5. Note that there is no reinforcing bar 6 at this position, or there is a sufficient opening for the waterway forming molds 56a, 56b to enter and exit. Then, the vertical position of the waterway formwork unit 80 is adjusted so that the upper formworks 50a, 50b of the waterway formwork unit 80 close the upper surface of the trench 5. Next, the construction vehicle 20 is moved along the trench 5. As a result, as shown in Figures 1(a) and (b), the reinforcing bar holder 32 hooks the upper part of the reinforcing bar 6 and holds it in a hollow state, and the waterway forming molds 56a, 56b are inserted into the reinforcing bar 6 without contacting it, and the drainage outlet forming molds 54a, 54b are positioned without contacting the gap at the top of the reinforcing bar 6.

[0024] At the same time, a concrete supply vehicle supplies ready-mixed concrete with a predetermined slump value to the supply section 40 of the waterway formwork unit 80. The supplied ready-mixed concrete falls from above the supply section 40 and fills the trench 5 below. At this time, the vibration device 30 installed between the first and second waterway forming molds 56a, 56b applies high-frequency internal vibrations to the supplied ready-mixed concrete. This high-frequency internal vibration liquefies the mortar components and fine aggregate in the ready-mixed concrete, filling voids in the coarse aggregate and densifying it, and also fills the area surrounded by the trench 5, the upper formworks 50a, 50b, the waterway forming molds 56a, 56b, and the drainage outlet forming molds 54a, 54b while burying the reinforcing bars 6.

[0025] Then, while maintaining this state, the construction vehicle 20 travels on the road surface 3 at a low speed, and moves the channel form unit 80 along the groove 5. As a result, the area where the channel forming dies 56a, 56b are located is punched out, and the tubular channel 12 is continuously formed. Also, the area where the drain outlet forming dies 54a, 54b are located is punched out, and the drain outlet 14 to the channel 12 is continuously formed. As a result, the side gutter 16 with the channel 12 inside and the drain outlet 14 at the top as shown in Figure 3(c) is continuously formed in the groove 5, and this side gutter 16 is continuously discharged from the rear of the channel form unit 80 as the construction vehicle 20 moves.

[0026] As described above, the channel formwork unit 80 according to the present invention has drain outlet forming dies 54a, 54b and channel forming dies 56a, 56b hanging down from the upper formworks 50a, 50b, and has no side walls. The upper formworks 50a, 50b close the upper opening of the groove 5 formed by excavation or the like, and concrete is filled into this groove 5. For this reason, the gutter 16 having the tubular channel 12 in the narrow groove 5 having approximately the same width as the gutter 16 can be continuously constructed.

[0027] In addition, in the channel formwork unit 80 according to the present invention, the vibration device 30 protrudes from the rear end of the first channel forming mold 56a and is positioned below the supply section 40 between the first channel forming mold 56a and the second channel forming mold 56b. Also, the transmission member 34 that transmits power to the vibration device 30 passes through the through hole 58 in the first channel forming mold 56a. Therefore, the vibration device 30 can be installed horizontally below the supply section 40, and there is no risk of contact with the reinforcing bar 6. In addition, the body part of the vibration device 30 that vibrates the most can be positioned in the center of the groove 5 (formwork part). This allows the capacity and vibration effect of the vibration device 30 to be maximized in the formwork part, and the supplied concrete can be vibrated extremely efficiently compared to when the installation direction is vertical.

[0028] Furthermore, since the transmission member 34 passes through the through hole 58 in the first water channel forming mold 56a, the transmission member 34 does not come into contact with the concrete, and the transmission member 34 does not hinder the flow of concrete in the supply section 40 and the formwork section. In addition, there is no wear due to friction with the concrete. Furthermore, in addition to making it easier to clean the formwork section, the amount of concrete remaining in the formwork section can be reduced.

[0029] Furthermore, the configuration, dimensions, operation, etc. of each part of the waterway formwork unit 80 shown in this example are merely examples and are not limited to the above example, and the present invention can be modified and implemented within the scope that does not deviate from the gist of the present invention. [Explanation of symbols]

[0030] 5 grooves 12 Waterways 16 Gutter 20 Construction vehicles 30 Vibration device 34 Transmission components 40 Supply section 50a First upper formwork 50b Second upper surface formwork 54a First drain hole forming type 54b Second drain hole forming type 56a First waterway formation type 56b Second waterway formation type 58 Through hole 80 Canal Formwork Unit

Claims

1. A waterway formwork unit that is fixed to a running construction vehicle and fills concrete while moving together with the construction vehicle to construct a side gutter having a tubular waterway within the gutter, A formwork unit that constructs the gutter and a supply unit that supplies concrete to the formwork unit, The formwork portion is A first upper surface form that closes an upper surface of the groove and is located in front of the supply unit; A second upper surface form that closes an upper surface of the groove and is located behind the supply unit; a first drainage hole forming mold suspended from the first upper surface mold; a second drainage hole forming mold suspended from the second upper surface mold; A first water channel forming mold having a substantially cylindrical shape fixed to a lower end of the first drain outlet forming mold; A second water channel forming mold having a substantially cylindrical shape fixed to a lower end of the second drain outlet forming mold; A vibration device that is located below the supply unit and applies vibration to the supplied concrete; A transmission member for transmitting power to the vibration device, The first water channel forming die has a through hole in the axial direction, A formwork unit for a water channel, characterized in that the transmission member passes through the through hole, and the vibration device protrudes from the rear end of the first water channel forming mold and is positioned within the supply section.

2. A channel formwork unit as described in claim 1, characterized in that the vibration device is located between the rear end surface of the first channel forming mold and the front end surface of the second channel forming mold, and is contained in an area that does not extend beyond the peripheral surfaces of the first channel forming mold and the second channel forming mold when viewed in the axial direction of the first channel forming mold and the second channel forming mold.

3. The water channel formwork unit as described in claim 1, characterized in that the vibration device is located between the rear end surface of the first water channel forming mold and the front end surface of the second water channel forming mold, and is contained in an area that does not extend beyond the peripheral surfaces of the first water channel forming mold and the second water channel forming mold when viewed from the axial direction of the first water channel forming mold and the second water channel forming mold, and is fixed with an installation angle in the range of 0° to -30° relative to the traveling direction of the formwork section, facing horizontally or diagonally downward.

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