JP6711652B2 - Continuous concrete molding method - Google Patents

Description

The present invention relates to a concrete continuous forming apparatus and a concrete continuous forming method.

Conventionally, as a technique in this field, a concrete continuous forming apparatus for constructing a curb as described in Patent Document 1 below is known. As this device moves on the construction surface and concrete material is supplied to the forming mold, and the concrete material is continuously formed in the shape of the curb in the forming mold, a curb that extends linearly on the movement path of the forming mold. Is to build.

JP 2001-164507 A

In this type of continuous concrete molding, it is also conceivable to construct a concrete structure on a non-smooth base such as on unpaved ground. However, in this case, it is necessary to adjust the foundation before forming the concrete structure. Therefore, for example, a machine such as a bulldozer or a hydraulic excavator for performing the adjustment is introduced, which makes management of the construction complicated. In contrast, the present invention aims at providing a concrete continuous molding method as possible out to perform lining for foundation omitted machine for lining.

The concrete continuous molding apparatus of the present invention is a molding mold for continuously molding the supplied concrete material on a base to form a concrete structure, a moving mechanism for moving the molding mold on the base, and a molding mold. A rectifying section that is detachably fixed, has an earth discharging surface that removes the sand on the front base along with the movement of the molding mold, and performs the base rectification.

According to this concrete continuous forming machine, the concrete continuous forming apparatus with the adjusting section attached thereto is moved prior to the formation of the concrete structure, whereby the foundation can be adjusted by the adjusting section. In this way, since the continuous concrete molding apparatus can be used as a machine for leveling, it is not necessary to separately prepare a machine for leveling even when the leveling of the base is required.

Further, the earth unloading surface may be located on the movement locus of the inner space of the molding mold. According to this configuration, by moving the forming mold along the same trajectory as when forming the concrete structure, the earth unloading surface can be moved on the base and the base can be adjusted. Therefore, the setting for controlling the position of the molding mold can be used as it is in the adjustment.

Further, the earth discharging surface may be located in front of the inner space of the molding mold in the moving direction and wider than the inner space. With this configuration, it is possible to reduce the possibility that the earth and sand on the base will go around behind the soil discharge surface and enter the inner space of the molding mold.

Further, the earth discharging surface may be inclined with respect to the moving direction of the molding mold in plan view. According to this structure, the extra earth and sand on the base is smoothly removed to the side of the earth discharging surface.

The concrete continuous forming method of the present invention is a concrete continuous forming apparatus in which any one of the above-described concrete continuous forming apparatuses is run with the adjusting section attached to adjust the base, and after the adjusting step, the concrete continuous forming is performed. And a concrete structure forming step of forming a concrete structure by causing the device to run with the straightening section removed and continuously molding a concrete material on a base by a molding mold.

Further, the concrete continuous forming method of the present invention further includes a preceding joint board installing step of installing a preceding joint board on the base, which is executed between the adjusting step and the concrete structure forming step, and the concrete structure forming step. Then, the forming mold may be moved on the base while passing the preceding joint plate through the inner space of the forming mold to form a concrete structure in which the preceding joint plate is embedded on the base.

In the concrete structure forming process, by removing the adjusting part, it is possible to avoid the interference between the adjusting part and the preceding joint plate installed in the installing process of the preceding joint plate.

According to the present invention, it is possible to provide a concrete continuous molding method as possible out to perform lining for foundation omitted machine for lining.

(A) is a side view of the concrete continuous forming apparatus according to the first embodiment, and (b) is a rear view thereof. It is a perspective view showing a hopper and a molding mold of a concrete continuous molding device. (A) is a partially broken side view showing a hopper and a forming mold of a concrete continuous forming apparatus, and (b) is a plan view thereof. (A)-(c) is a perspective view showing the concrete continuous forming method concerning a 1st embodiment. It is sectional drawing which shows a hopper and a shaping|molding mold in a concrete structure formation process. (A), (b) is sectional drawing which shows the state which a vibrator avoids a preceding joint board. It is a perspective view which shows the hopper and the shaping|molding mold of the concrete continuous shaping|molding apparatus which concern on 2nd Embodiment.

(First embodiment)
Hereinafter, a first embodiment of a concrete continuous forming apparatus and a concrete continuous forming method according to the present invention will be described with reference to the drawings. FIG. 1A is a side view of the concrete continuous forming apparatus 1 according to the present embodiment as seen from the side in the traveling direction, and FIG. 1B is a rear view of the concrete continuous forming apparatus 1 as seen from the rear in the traveling direction. Is.

In the following, the term "running direction" means the running direction of the concrete continuous forming apparatus 1, and the term "width direction" means the width direction of the concrete continuous forming apparatus 1. Further, in the following description, when terms including front and rear such as “front” and “rear” are used, it is assumed that the terms “front side” and “rear side” in the traveling direction of the concrete continuous molding apparatus 1 are used, and “right side”, When a word including left and right concepts such as “left side” is used, it means right and left in the running direction of the concrete continuous forming apparatus 1.

The concrete continuous forming apparatus 1 shown in FIG. 1 is an apparatus for constructing a concrete structure that extends linearly with a uniform cross-sectional shape on a predetermined base. The base may be unpaved ground or another existing concrete structure, for example. As shown in FIG. 1, the continuous concrete molding apparatus 1 includes a main body 3 and a traveling mechanism (moving mechanism) 5 provided in the main body 3. The concrete continuous forming apparatus 1 is self-propelled in the direction of arrow A by the traveling mechanism 5. The traveling mechanism 5 may be a crawler belt or wheels.

A molding mold 7 for molding a concrete material is provided on the left side of the main body 3. The inner cavity portion 8 of the molding mold 7 has a cross-sectional shape corresponding to the concrete structure to be constructed, and extends in the running direction of the concrete continuous molding device 1. The concrete continuous forming apparatus 1 includes a hydraulic device (not shown) capable of moving the forming mold 7 up and down with respect to the main body 3. A hopper 9 for introducing concrete material into the molding mold 7 is provided above the molding mold 7. Further, the main body 3 is provided with a screw conveyor device 11 for feeding concrete material into the hopper 9. The screw conveyor device 11 has a charging port 11a located on the right side of the main body 3, and conveys the concrete material supplied to the charging port 11a to the entrance 9a of the hopper 9 located on the left side of the main body 3.

On the base, it is necessary to move the molding mold 7 directly above a line where a concrete structure is to be constructed (hereinafter referred to as "construction planning line L"). That is, it is necessary to control the movement trajectory of the molding mold 7, and it is necessary to control the position in the width direction and the position in the vertical direction of the molding mold 7 during traveling. Therefore, as a mechanism for controlling the movement locus of the molding mold 7, the string-shaped sensor wire 51 (see FIG. 4) extending in parallel with the construction planning line L is prepared in advance. The sensor wire 51 is installed at a position separated from the construction planning line L by a predetermined distance (for example, 1 m) in the left direction and at a predetermined height (for example, 50 cm) from the base surface. For example, support wires 52 for sensor wires are arranged at predetermined intervals on the left side of the construction planning line L, and the support wires 52 are bridged over the sensor wires 51.

On the other hand, as shown in FIG. 1, the concrete continuous forming apparatus 1 includes a sensor 13. The sensor 13 is attached to the tip of an arm 13a extending leftward from the main body 3 to the outside of the molding mold 7, for example. For example, the sensor 13 contacts the sensor wire 51 located outside the molding mold 7 to detect the position (the position in the width direction and the position in the vertical direction) of the sensor wire 51. The sensor 13 may be of a type that detects the position of the sensor wire 51 in a non-contact manner.

When the concrete continuous molding apparatus 1 is running, the sensor 13 detects the position of the sensor wire 51 in the width direction and the position in the vertical direction. Then, the traveling mechanism 5 is steering-controlled so as to maintain a constant distance in the width direction between the molding mold 7 and the sensor wire 51. Further, the hydraulic device for raising and lowering the molding mold 7 controls the vertical position of the molding mold 7 so as to keep the vertical distance between the molding mold 7 and the sensor wire 51 constant. With these configurations, the position in the width direction and the position in the vertical direction of the molding mold 7 during traveling are controlled, and the movement trajectory of the molding mold 7 is controlled. Then, the positional relationship between the molding mold 7 and the sensor 13 and the positional relationship between the construction planning line L and the sensor wire 51 are adjusted in advance so that the molding mold 7 moves directly above the construction planning line L. Is set to.

The outline of the construction of the concrete structure by the continuous concrete molding apparatus 1 is as follows. The concrete material is supplied from the concrete mixer to the input port 11a of the screw conveyor device 11, and the continuous concrete molding device 1 is run at a predetermined speed (for example, about 1 km/h) along the construction planning line L. At this time, the molding mold 7 moves immediately above the construction planning line L by the above-mentioned movement trajectory control. The concrete material conveyed by the screw conveyor device 11 is put into the inlet 9a at the upper end of the hopper 9. The concrete material from the hopper 9 is introduced into the forming mold 7 by its own weight, and the forming mold 7 forms the concrete material in a predetermined cross-sectional shape on the base. Then, as the concrete continuous forming apparatus 1 moves forward, uncured concrete structures are continuously formed on the construction planning line L behind the forming mold 7. Then, the formed uncured concrete structure is hardened to complete the concrete structure. A relatively low slump concrete material is used so that the uncured concrete structure is not easily deformed.

2 is a perspective view showing the molding mold 7 and the hopper 9 of the concrete continuous molding apparatus 1, FIG. 3(a) is a partially cutaway sectional view thereof, and FIG. 3(b) is a plan view thereof. As described above, the inner hollow portion 8 of the molding mold 7 (hereinafter referred to as “mold inner hollow portion 8”) has a cross-sectional shape corresponding to the concrete structure to be constructed, and the running direction of the concrete continuous molding apparatus 1 (arrow A Direction). For example, the inner mold cavity 8 in this embodiment has a trapezoidal cross-sectional shape in order to form a concrete structure having a trapezoidal cross-section. A trapezoidal front end opening 7a is formed at the front end of the molding mold 7, and a trapezoidal rear end opening 7b is formed at the rear end of the mold 7. In this way, since the front end and the rear end of the inner mold cavity 8 are open, the continuous concrete molding apparatus 1 is constructed using a preceding joint board 55 (see FIG. 4(b)), which will be described later. It can also be applied to the construction method in which concrete is continuously placed at the position where the is installed.

A hopper 9 is provided on the upper surface of the molding mold 7, and an inner void portion 10 of the hopper 9 (hereinafter referred to as “hopper inner void portion 10”) communicates with the mold inner void portion 8. At a position directly below the hopper 9, a vibrator 15 is installed in the inner space 8 of the mold. The vibrator 15 is located in the inner mold cavity 8 so as not to contact the molding mold 7, and vibrates to compact the concrete material introduced into the inner mold cavity 8. The vibrator 15 is connected via a cable 17 to a drive source (not shown) such as a cycle changer installed outside the hopper 9. The cable 17 passes through the inner space 10 of the hopper and is drawn out of the hopper 9 from the inlet 9 a of the hopper 9.

Further, in the vicinity of the inlet 9a of the hopper 9, a vibrator insertion/removal mechanism for reciprocating the vibrator 15 in the insertion/removal direction with respect to the inner mold cavity 8 is provided. As a specific example, a hydraulic cylinder 23 is fixed to the inlet 9a of the hopper 9 via a bracket 21, and a cable 17 is fixed to a telescopic rod 23a of the hydraulic cylinder 23. The hydraulic cylinder 23 is connected to a hydraulic unit installed outside the hopper 9 and an operation unit (not shown). The telescopic rod 23a of the hydraulic cylinder 23 expands and contracts according to the operation of the operation unit by the user. With this configuration, it is possible to drive the vibrator 15 in a direction (vertical direction) in which it is inserted into and removed from the mold inner space 8, and for example, the vibrator 15 can be retracted from the mold inner space 8 to the hopper inner space 10. .. Here, the mold inner space 8 at a position immediately below the hopper inner space 10 is a region below a virtual plane that coincides with the top end surface 8 a of the inner space 8. Note that, in the example shown in FIGS. 2 and 3, there are two sets of the vibrator 15 and the hydraulic cylinder 23 arranged in the width direction as described above, but the number of sets of the vibrator 15 and the hydraulic cylinder 23 is appropriately set. You may change it.

Further, as shown in FIG. 2 and FIG. 3, an unleveled alignment portion 31 (alignment portion) is provided in front of the front end opening 7a of the molding mold 7. As a specific example, the uneven rectification portion 31 is a metal member, and is configured by a flat earth discharging plate 33 and a mounting rod 35 extending rearward from the earth discharging plate 33. The mounting rod 35 is detachably attached to the side surface of the molding mold 7, so that the uneven alignment portion 31 is detachably fixed to the molding mold 7. The uneven adjustment section 31 may be attachable to and detachable from the molding mold 7 by a manual operation without using a tool, for example. As a mechanism for attaching and detaching the mounting rod 35 to and from the side surface of the molding mold 7, various known mechanisms can be adopted.

The front surface of the earth unloading plate 33 is an earth unloading surface 37 that removes the earth and sand on the front base as the concrete continuous forming apparatus 1 runs. The lower edge of the soil discharging surface 37 may be located at substantially the same height as the lower end of the molding mold 7. Further, the dimension of the soil discharging surface 37 in the width direction is larger than the dimension of the mold inner space 8 in the width direction, and the soil discharging surface 37 covers the front of the mold inner space 8 over the entire width direction in a front view. It is in a position to cover. In addition, in plan view (that is, when viewed from the direction of FIG. 3B), the earth discharging surface 37 is inclined with respect to the traveling direction A, and moves backward as it goes away from the main body 3 (left direction). Is inclined to.

The function of the uneven rectification unit 31 based on the above configuration is as follows. When the continuous concrete molding apparatus 1 is run in a state in which the unleveling part 31 is attached, the earth and sand existing on the movement track of the earth discharging surface 37 and the mold inner space 8 is scraped and leveled by the earth discharging surface 37. Excessive earth and sand is pushed away by the earth unloading surface 37 and removed to the side of the construction planning line L. As a result, the roughening of the area is achieved. Here, due to the positional relationship in which the wide soil discharge surface 37 covers the front of the inner mold cavity 8 over the entire width direction, the earth and sand pushed away by the soil discharge surface 37 is discharged to the soil discharge plate. It is possible to reduce the possibility that the wire wraps around behind 33 and enters from the front end opening 7a. Further, since the earth discharging surface 37 is inclined with respect to the traveling direction A in a plan view, excess earth and sand is smoothly removed toward the sides of the earth discharging surface 37. Further, as described above, since the concrete continuous forming apparatus 1 includes the hydraulic device (not shown) capable of moving the forming mold 7 up and down with respect to the main body 3, it is possible to adjust the ground height to be adjusted. it can.

Subsequently, an example of a concrete continuous forming method using the concrete continuous forming apparatus 1 will be described with reference to FIGS. 4 to 6. In this concrete continuous forming method, a concrete structure 59 having a trapezoidal cross section is constructed on the construction planning line L set on the unpaved ground 50 (base). Note that, in FIG. 4, only the molding mold 7, the hopper 9, and the uneven alignment portion 31, which are the main parts of the concrete continuous molding apparatus 1, are illustrated. This concrete continuous molding method includes a sensor wire installation step, a straightening step, a preceding joint installation step, a concrete structure forming step, and a compaction step, which will be described below.

(Sensor wire installation process)
As shown in FIG. 4( a ), support wires 52 for sensor wires are arranged at predetermined intervals on the side of the work planning line L on the ground 50, and the sensor wires 51 parallel to the work planning line L are supported by the support pillar 52. Will be handed over to. The sensor wire 51 is installed at a position separated from the construction planning line L in the horizontal direction by a predetermined distance and in the vertical direction by a predetermined distance.

(Rectification process)
Then, the continuous concrete molding apparatus 1 with the unrectified straightening portion 31 attached thereto is run in the direction of arrow A along the construction planning line L. At this time, the molding mold 7 moves in the direction of arrow A directly above the construction planning line L by the position control of the molding mold 7 with respect to the sensor wire 51 as described above. Along with this, the earth removal surface 37 of the uneven rectification portion 31 also moves in the direction of arrow A immediately above the construction planning line L. By running the concrete continuous forming apparatus 1 as described above, the earth and sand on the construction planning line L on the ground 50 are scraped and leveled, and excess sand and sand are removed to the side of the construction planning line L, so that the construction planning line Uneven correction on L is achieved. Further, this adjustment step may include a step of adjusting the ground height on the ground 50. That is, by adjusting the position of the uneven rectification portion 31 to a desired height, the ground on the ground 50 is automatically cut by the uneven rectification portion 31 to a desired height, and the ground height is adjusted. It

(Preceding joint plate installation process)
Next, as shown in FIG. 4B, the preceding joint boards 55 are installed at predetermined intervals (for example, 10 m intervals) on the unplanned construction planning line L. The preceding joint board 55 is erected vertically in a direction orthogonal to the construction planning line L. In order to support the leading joint plate 55 in an upright state, for example, a support member 56 (see FIG. 5) or the like may be provided on the rear surface of the leading joint plate 55.

(Concrete structure forming process)
Subsequently, as shown in FIG. 4C, the concrete continuous forming apparatus 1 continuously forms the concrete structures 59 on the construction planning line L. Specifically, the concrete continuous forming apparatus 1 with the unrectified portion 31 removed is run along the construction planning line L, and the concrete material C from a concrete mixer truck (not shown) is placed in the hopper 9. Supply. At this time, the molding mold 7 moves in the direction of arrow A directly above the construction planning line L by the position control of the molding mold 7 with respect to the sensor wire 51 as described above. Then, the molding mold 7 molds the concrete material C into a trapezoidal cross section on the construction planning line L. Thereby, as the concrete continuous forming apparatus 1 advances, the uncured concrete structure 59 extending on the construction planning line L is continuously formed behind the forming mold 7.

Here, as shown in FIG. 5, the height of the preceding joint board 55 is set to be lower than the height of the finishing surface 59a at the upper end of the concrete structure 59. That is, the height of the preceding joint plate 55 is set to be lower than the height of the top end surface 8 a of the inner mold cavity 8. The height difference 58 between the preceding joint board 55 and the finishing surface 59a at the upper end of the concrete structure 59 is set to be larger than the maximum size (for example, 40 mm) of the coarse aggregate contained in the concrete material C. Has been done. The maximum size of coarse aggregate is defined as the size indicated by the smallest nominal size of the sieve through which 90% or more of the aggregate passes by mass, as described in Document 1 below. It
(Reference 1) Japan Concrete Institute, edited by "Points of Concrete Technology '15", Japan Concrete Institute, September 2015

The preceding joint plate 55 has a trapezoidal shape substantially corresponding to the cross-sectional shape of the mold inner space 8, except that the height is set as described above, and is slightly smaller than the cross section of the mold inner space 8. small. Therefore, when the molding mold 7 moves on the construction planning line L on which the preceding joint board 55 is erected, the preceding joint board 55 should pass through the inner space 8 of the mold without interfering with the molding mold 7. You can That is, the leading joint plate 55 enters the inner space 8 of the mold through the front end opening 7 a and moves out of the molding mold 7 through the rear end opening 7 b as the molding mold 7 moves. Then, the preceding joint plate 55 is embedded in the concrete material C in the inner space 8 of the mold, and as a result, the completed joint structure 59 has the preceding joint plate 55 embedded at a predetermined interval.

(Compacting process)
As shown in FIG. 5, during the execution of the concrete structure forming step, the vibrator 15 applies vibration to the concrete material C flowing from the hopper inner cavity 10 to the mold inner cavity 8, and The material C is compacted. Since the concrete material C thus compacted is molded by the molding mold 7 to form the concrete structure 59, the concrete structure 59 is in a solid state.

Further, as shown in FIG. 6, in the compacting step, the vibrator 15 is avoided from the preceding joint plate 55 in order to avoid the interference between the preceding joint plate 55 and the vibrator 15 passing through the inner mold cavity 8. The process is executed. Specifically, as shown in FIG. 6A, immediately before the vibrator 15 reaches the position of the leading joint plate 55, the hydraulic cylinder 23 (see FIG. 3) raises the vibrator 15 to move the vibrator 15 to the hopper. Retreat to the inner space 10. Then, as shown in FIG. 6B, after the vibrator 15 has passed the position of the leading joint plate 55, the vibrator 15 is lowered again by the hydraulic cylinder 23 (see FIG. 3) to move the vibrator 15 to the inner space of the mold. Return to 8. The above-described operation of the hydraulic cylinder 23 is executed, for example, by a manual operation by the user. Note that the concrete material C is not shown in FIG.

By the concrete continuous forming method as described above, the concrete structure 59 having a trapezoidal cross section that linearly extends on the construction planning line L is formed.

Next, the function and effect of the concrete continuous forming apparatus 1 and the concrete continuous forming method described above will be described. According to the concrete continuous forming apparatus 1 and the concrete continuous forming method, the concrete material is compacted by the vibrator 15 in the inner mold cavity 8, so that a solid concrete structure 59 is constructed. Further, since the vibrator 15 is installed at a position immediately below the hopper 9, vibration is applied to the concrete material C immediately after being introduced from the hopper 9 and before being completely molded by the molding mold 7. Therefore, in the molding mold 7, since the concrete material C after being sufficiently vibrated is molded, a more solid concrete structure 59 is formed.

Moreover, since the continuous concrete molding apparatus 1 includes a vibrator insertion/extraction mechanism configured by the hydraulic cylinder 23 and the like, when the leading joint plate 55 is passed through the mold inner space portion 8, the preceding joint plate 55 and the vibrator 15 interfere with each other. Can be avoided.

The vibrator 15 is located in the inner space 8 of the mold so as not to contact the molding mold 7. According to this configuration, compared to a configuration in which the vibrator is attached to the molding mold 7 itself (for example, a form vibrator or the like), vibration of the molding mold 7 is suppressed, and as a result, the molding accuracy of the concrete structure 59 is reduced. It can be suppressed.

Further, as described above, the difference in height between the preceding joint board 55 and the finishing surface 59a at the upper end of the concrete structure 59 is set to be larger than the maximum size of the coarse aggregate contained in the concrete material C. .. Therefore, as shown in FIG. 5, when the leading joint plate 55 passes through the mold inner cavity portion 8, between the top end surface 8a of the mold inner cavity portion 8 and the upper end of the leading joint joint plate 55, coarse aggregate is used. Therefore, a large gap G in the vertical direction is generated. Therefore, when the concrete material C is introduced into the molding mold 7, the concrete material C including the coarse aggregate moves so as to overflow from the rear space of the preceding joint board 55 to the front space through the gap G. In particular, even when the vibrator 15 is retracted to the inner space 10 of the hopper, the concrete material C flows to the front surface side of the preceding joint board 55 through the gap G, so that the concrete material C is sufficient even near the front surface of the preceding joint board 55. To be filled. Further, at this time, since the concrete material C including the coarse aggregate moves to the front space, the material separation of the concrete material C hardly occurs.

Further, the concrete continuous forming apparatus 1 includes a detachable unevenness adjusting section 31. According to this configuration, by running the concrete continuous forming apparatus 1 with the unrectified straightening portion 31 attached thereto along the construction planning line L prior to the formation of the concrete structure 59, the construction planning line L The above-mentioned uneven correction is possible. In this way, since the concrete continuous forming apparatus 1 can be used as a machine for uneven rectification, even when the rectification of the construction plan line L is necessary, a device for terrain adjustment is separately provided. No need to prepare. Further, since it is possible to remove the earth and sand on the construction planning line L, when concrete continuous molding is performed on a foundation, such as unpaved ground, where it is highly necessary to remove the earth and sand, the concrete of the present embodiment is used. The continuous molding apparatus 1 and the concrete continuous molding method can be applied particularly preferably.

In addition, the soil discharging surface 37 of the uneven landing portion 31 is located on the traveling locus of the space 8 inside the mold. As one specific example thereof, the earth discharging surface 37 is provided in front of the front end opening 7 a of the molding mold 7. According to this configuration, the molding mold 7 may be moved in the same trajectory as in the concrete structure forming step even in the adjusting step. Therefore, the settings for controlling the position of the molding mold 7, such as the sensor wire 51 and the sensor 13, can be used as they are in the adjustment process.

Further, in the continuous concrete molding apparatus 1, the movement locus of the molding mold 7 can be controlled with high accuracy by using the sensor wire 51 and the sensor 13. As a result, in the rectifying step, since the movement trajectory of the uneven rectifying unit 31 is also controlled with high accuracy, it is possible to perform the uneven rectification of the substrate with high accuracy. In addition, the above-described highly accurate unleveling is performed at the moving speed of the concrete continuous forming apparatus 1 (for example, about 1 km/h). Therefore, it is possible to efficiently perform the ground leveling of the base as compared with the conventional method in which the ground is checked by surveying while laying the base with a machine such as a bulldozer.

In addition, since the unleveled straightening portion 31 is removable, it can be removed in the concrete structure forming step. As a result, in the concrete structure forming step, interference between the preceding joint plate 55 and the uneven alignment portion 31 can be avoided, so that the method can be applied to a construction method using the preceding joint plate 55. Further, similarly, it is also applicable to a construction method in which concrete is continuously placed at a position where a reinforcing bar is installed in advance.

(Second embodiment)
Then, 2nd Embodiment of the concrete continuous forming apparatus and concrete continuous forming method which concern on this invention is described, referring FIG. As shown in FIG. 7, the concrete continuous forming apparatus of the present embodiment includes an opening/closing window portion 61 provided on a lateral outer peripheral wall 7c of the forming mold 7, instead of the vibrator 15 described above. .. Since the configuration other than this point is the same as that of the first embodiment, duplicated description will be omitted. The window portion 61 is provided, for example, at a position below the hopper 9, and connects the outside of the molding mold 7 and the cavity 8 inside the mold. The window 61 has, for example, a lid that can slide in the traveling direction A, and can be opened and closed by moving the lid. The user can insert/remove the hand-held vibrator 63 into/from the mold inner cavity 8 from the outside through the window 61, for example. If it is unnecessary, the window 61 may be closed to prevent the concrete material C from leaking.

The continuous concrete forming method of the present embodiment is performed using the concrete continuous forming apparatus as described above, and the following compacting step is executed instead of the compacting step of the first embodiment. Since the steps other than the compaction step are the same as those in the first embodiment, duplicate description will be omitted.

During the execution of the concrete structure forming process, the vibrator 63 is inserted through the window 61 and vibration is applied. As a result, the concrete material C flowing from the hopper inner space 10 to the mold inner space 8 is vibrated, and the concrete material C is compacted. Further, in order to avoid the interference between the leading joint plate 55 passing through the inner space 8 of the mold and the vibrator 63, the vibrator 63 is pulled out immediately before the window portion 61 reaches the position of the leading joint plate 55, and the window portion 61 advances. After passing through the position of the joint plate 55, the vibrator 63 may be inserted again. The position where the window portion 61 of the molding mold 7 is provided is not limited to the side outer peripheral wall 7c. That is, any structure may be used as long as the window 61 communicates the outside of the molding mold 7 with the inner cavity 8 of the molding mold. For example, the window 61 may be provided on the upper wall 7d of the molding mold 7.

With the concrete continuous forming apparatus and the concrete continuous forming method of the present embodiment as described above, the same operational effects as those of the first embodiment can be obtained.

The present invention can be implemented in various forms including the above-described embodiment and various modifications and improvements based on the knowledge of those skilled in the art. Further, it is possible to configure a modified example of the example by utilizing the technical matters described in the above-described embodiment. The configurations of the respective embodiments may be appropriately combined and used.

For example, the vibrator 15 in the first embodiment only needs to be able to rise to a position where the lower end of the vibrator 15 does not come into contact with at least the preceding joint plate 55 (see FIG. 5 ). It is not essential to evacuate completely to the empty space 10. In addition, some of the plurality of vibrators 15 may be installed at positions that do not interfere with the preceding joint board 55 (see FIG. 5 ). As described above, the vibrator 15 installed at a position where it does not interfere with the preceding joint plate 55 does not have to be reciprocated in the vertical direction, and the position may be fixed. Further, the unleveled straightening portion may have any earth discharging surface for removing the earth and sand on the front base, and is not limited to the one having the plate-shaped earth discharging plate. For example, the uneven rectification portion may be a block-shaped member having an earth discharging surface on the front surface. Further, the preceding joint board installing step of installing the preceding joint board 55 is not essential, and continuous concrete molding may be performed without installing the preceding joint board 55. In this case, the front end opening 7a formed at the front end of the molding mold 7 is not essential. That is, in this case, the molding mold 7 may not be provided with the front end opening 7a and may be provided with only the rear end opening 7b.

Further, for example, the vibrator 15 may be omitted in the concrete continuous forming apparatus of the present invention, and the compaction step may be omitted in the concrete continuous forming method of the present invention.

DESCRIPTION OF SYMBOLS 1...Continuous concrete forming device, 5... Running mechanism (moving mechanism), 7... Mold, 7c... Outer peripheral wall, 8... Mold inner cavity (inner cavity), 15, 63... Vibrator, 23... Hydraulic cylinder (vibrator) Insertion/extraction mechanism), 31... Uneven adjustment part (adjustment part), 37... Excavation surface, 50... Ground (base), 55... Preceding joint board, 59... Concrete structure, 59a... Finished surface, 61... Window Part, C... Concrete material.

Claims (2)

A molding mold for continuously molding the supplied concrete material on a base to form a concrete structure,
A moving mechanism for moving the molding mold on the substrate,
A continuous concrete molding, which is fixed to the forming mold, has a soil discharging surface for removing earth and sand on the front base along with the movement of the forming mold, and a straightening part for performing the straightening of the base. A straightening step of running the device and straightening the base;
After the adjusting step, the concrete continuous forming apparatus is run with the adjusting section removed, and a concrete structure is formed by continuously forming a concrete material on the base by the forming mold to form a concrete structure. Object forming process,
Comprising a preceding joint board installation step which is carried out between the adjusting step and the concrete structure forming step and which installs the preceding joint board on the base,
In the concrete structure forming step, the forming mold is moved on the base while passing the preceding joint plate through the inner space of the forming mold, and a concrete structure in which the preceding joint plate is embedded is formed on the base. A continuous concrete forming method. The soil discharge surface is located on the moving locus of the inner hollow portion of the mold, the concrete continuous forming method according to claim 1.

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