JP6308498B2 - How to transport pavement material to the pavement position - Google Patents

Description

  The present invention relates to a method for transporting a pavement material to a pavement position that realizes timely and economically efficient construction with a minimum of manual labor in construction and the like for paving a steel slab by bridging or the like.

  In pavement of steel slabs in bridges and the like, fiber reinforced cement concrete (FRC), steel fiber reinforced cement concrete (SFRC) or the like is employed instead of goose asphalt. This is because goose asphalt has low rigidity, and when it is paved with goose asphalt, local deformation occurs between the steel floor slab and fatigue cracks are likely to occur at the member joints. The following Patent Documents 1 and 2 propose an invention for improving the quality of paving work using such FRC or SFRC as a paving material, an invention relating to an adhesive used for paving work, and the like.

  For example, in reinforced concrete pavement work for existing bridges, the existing pavement is removed to reveal a steel deck, the surface is cleaned, an adhesive is applied, and the appeared steel deck is removed by FRC or Paving with SFRC. Since this is a repair work for existing pavements, vehicles pass outside the construction lane, and the work area becomes narrow. In addition, it is not possible to move heavy machinery or the like on the ground coated with adhesive.

  Therefore, in the conventional process of transporting the pavement material to the pavement position, as shown in FIG. 19, the entire process is transported back and forth with a hand-held unicycle U or the like, and a timely and economically efficient construction is carried out. There are indications that they have not. For example, if two paving material manufacturing devices E are fully operated and the paving work is to be carried out with the aim of completing construction early, 33 or more hand-wheeled unicycles U and personnel related to this will be required. There is a problem that costs are increased.

  On the other hand, if the labor cost is to be suppressed, the number of pavement material manufacturing apparatuses to be used is reduced or the full operation is not performed, so that early construction completion is not realized. In order to reduce labor, it may be possible to use a belt conveyor to transport the paving material, but there is a safety problem because the belt conveyor passes over the worker who is applying the adhesive. . It is also necessary to consider the possibility of pavement material spilling from the belt conveyor.

JP 2005-314992 A JP 2007-240215 A

  As described above, the conventional reinforced concrete pavement work for existing bridges has a problem in that it requires a lot of manpower and is not timely and economically efficient.

  The present invention has been proposed in view of the above circumstances, and by reviewing the conventional processes and realizing mechanization corresponding to a narrow work range, it is possible to realize timely and economically efficient construction with the minimum necessary manpower. An object of the present invention is to provide a method for transporting pavement material to a pavement position.

  In order to achieve the above object, the present invention has a hopper device having a material receiving portion and an in-device moving mechanism for moving the material receiving portion in the device, and a bucket having an opening / closing portion, and operates the bucket. A method for transporting a pavement material to a pavement position using a transport body having an arm provided with an actuator for extending from the main body unit, the material input step of charging the pavement material to the material receiving unit A material transfer step of transferring the pavement material received by the material receiving unit from the material receiving unit to the bucket by the in-device moving mechanism, and operating the bucket by the actuator to close the open / close unit. A conveying step of conveying the pavement material accommodated in the bucket by the carrier toward a pavement position, and the bucket by the actuator. And create open said opening portion, said paving material which has been transported by the carrier, characterized in that it comprises a material releasing step of releasing by the paving position.

  In the material charging step, the pavement material is input to the material receiving portion directly from the pavement material manufacturing apparatus and / or using a hand-held unicycle.

  In the transporting process, the bucket is transported by being positioned closer to the main body than the arm of the transporter.

  In the transporting process, the ground is used to close the opening / closing part.

  In the material discharging step, the arm portion is used to open the opening / closing portion.

  In the material discharging step, the pavement material is discharged at a predetermined height.

  In addition, a plurality of the hopper devices are used.

  In the present invention, for example, a reinforced concrete pavement work for an existing bridge, a material receiving portion, a hopper device having an in-device moving mechanism for moving the material receiving portion in the device, and a bucket having an opening / closing portion, This is performed using a transport body in which an arm portion having an actuator for operating the bucket extends from the main body portion. As a result, regarding the transportation of the pavement material to the pavement position, mechanization can be realized even in a narrow work range, and work efficiency and labor cost can be reduced. Furthermore, in the present invention, the pavement material received by the material receiving unit is transferred to the bucket by the in-device moving mechanism, is transported by the transport body toward the pavement position, and is discharged to the ground at the pavement position. For this reason, it is possible to ultimately realize the transport of the pavement material to the pavement position without manpower, and at least the transport of the pavement material to the pavement position can be completed with the minimum necessary number of hands. Therefore, it is possible to realize time- and economically efficient construction such as reinforced concrete pavement for existing bridges. Since the paving material is discharged to the ground at the paving position using the arms of the carrier, the carrier does not move on the ground to which the adhesive is applied.

  In the present invention, in the material charging step, the pavement material is input to the material receiving portion directly from the pavement material manufacturing apparatus and / or using a hand-held unicycle. For this reason, at the time of starting the material charging process, it is possible to realize the transportation of the pavement material to the pavement position by at least the minimum necessary manual labor without any manual labor.

  In the present invention, in the transporting process, the bucket is transported by being positioned closer to the main body than the arm of the transporting body. As a result, the carrier can turn with a minimum turning radius around its main body, so that it can cope with a narrow working range and does not hinder the passage of vehicles outside the construction lane. be able to.

  In the present invention, the ground is used to close the opening / closing part of the bucket in the transporting process. Moreover, an arm part is utilized in order to open the opening / closing part of a bucket in a material discharge | release process. Thereby, opening and closing of the bucket can be realized without providing power to the bucket itself.

  In the present invention, the pavement material is discharged at a predetermined height in the material discharging step. As a result, the amount per unit area of the pavement material to be released can be made uniform to some extent, so that the unevenness of the pavement material necessary for the pavement work using the subsequent construction machine (spreader) can be smoothed. This burden can be suppressed.

  In the present invention, a plurality of hopper devices are used. Thereby, it is possible to reduce the number of people who work using the hand-held unicycle, and it is possible to realize more efficient construction such as reinforced concrete pavement work of the existing bridge.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic showing the whole outline | summary of the conveyance method of the pavement material to the pavement position which concerns on this invention, Comprising: (a) is the schematic showing the first half which consists of the material injection | throwing-in process and material transfer process of this invention, (B) is the schematic showing the latter half part which consists of the conveyance process and material discharge | release process of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic showing the material injection | throwing-in process in this invention, (a) is the schematic in the case of using a hand-held type unicycle, (b) is the schematic in the case of supplying directly from the manufacturing apparatus of a pavement material. BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic showing the material transfer process in this invention, (a) is the schematic showing the state which has a material receiving part in the lower rank, (b) is the schematic showing the state in which the material receiving part is in the upper rank, (c ) Is a schematic view showing a state in which the material receiving portion is inclined in order to transfer the pavement material to the bucket. It is the schematic showing the conveyance process in this invention, (a) is the schematic showing the state which has accommodated the pavement material in the bucket, (b) is conveyed in the state which located the bucket in the main body side rather than the arm part. It is the schematic showing a mode that the body is turning with the minimum diameter. It is the schematic showing the material discharge | release process in this invention, (a) is a schematic diagram showing a mode that the bucket is operated with an actuator and the opening / closing part of a bucket is opened using an arm part, (b) is an adhesive. It is the schematic showing the state which has discharged | emitted the pavement material from the predetermined height of the apply | coated pavement position. It is the schematic which represented the whole outline | summary of the conveyance method of the pavement material to the pavement position based on this invention a little planarly. It is a schematic side view showing the whole outline of the example of a hopper apparatus which constitutes the present invention. It is a schematic plan view showing the whole outline of the example of a hopper apparatus which constitutes the present invention. It is a schematic front view showing the whole outline of the example of a hopper apparatus which constitutes the present invention. It is principal part explanatory drawing explaining the principal part (device movement mechanism) of the hopper apparatus example which concerns on this invention, Comprising: (a) demonstrates the position of a receiving part and a link mechanism when receiving paving material in a receiving part. Explanatory drawing, (b) is explanatory drawing explaining the position of a receiving part and link mechanism when lifting pavement material in a receiving part, (c) is a receiving part and link mechanism when transferring pavement material in a receiving part, It is explanatory drawing explaining the state of a hydraulic cylinder. It is the schematic showing the whole outline | summary of the example of the hydraulic shovel provided with the opening-and-closing-type bucket apparatus which comprises this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic explanatory drawing showing the open / close-type bucket apparatus which comprises this invention, (a) is a schematic explanatory drawing showing the open state, (b) is a schematic explanatory drawing showing the closed state. It is the schematic explaining the outline | summary of the scene where a pavement material is thrown into the open / close-type bucket apparatus which comprises this invention (a pavement material is accommodated). BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing explaining the closing operation | movement using the ground of the opening-and-closing bucket apparatus in the example of the hydraulic shovel provided with the opening-and-closing bucket apparatus which comprises this invention, Comprising: (a) represents the opening-and-closing bucket apparatus before closing operation. (B) is an explanatory view showing the openable bucket apparatus after the closing operation. It is explanatory drawing explaining the position of the open / close-type bucket apparatus in the scene which conveys the pavement material which the example of the hydraulic shovel provided with the open / close-type bucket apparatus which comprises this invention accommodates. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic explanatory diagram for explaining in outline the state in which a hydraulic excavator provided with an openable bucket apparatus according to the present invention is turning with a minimum turning diameter during transportation. It is a schematic explanatory drawing explaining in outline the scene which discharge | releases pavement material from the open / close-type bucket apparatus which comprises this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing explaining the opening operation | movement using the arm part (boom) of the opening-and-closing bucket apparatus in the example of the hydraulic shovel provided with the opening-and-closing bucket apparatus which comprises this invention, (a) is the opening-and-closing type before opening operation Explanatory drawing showing a bucket apparatus, (b) is explanatory drawing showing the opening-and-closing type bucket apparatus after opening operation. It is the schematic showing the conveyance method of the pavement material to the pavement position in the reinforced concrete pavement etc. of the conventional existing bridge.

  Hereinafter, an embodiment relating to a method for transporting a pavement material to a pavement position according to the present invention will be described in detail with reference to the drawings. The embodiment described below is merely an example of the present invention. The present invention can be modified in various ways without departing from the scope of the claims.

  As shown in FIG. 1, the present invention uses a hopper device 1 and a hydraulic excavator 2 as a carrier, and realizes highly efficient paving work in terms of time and cost, such as shortening the construction period and reducing labor costs. It relates to a method of transporting paving materials to pavement positions that contribute to

  For example, as shown in FIG. 3, the hopper device 1 includes a hopper-like hopper portion 11 in which a pyramid portion 11a as a material receiving portion is formed, and a link mechanism that moves the hopper portion 11 in the vertical direction in the device. 121 and a mechanical mechanism portion 12 as an in-device moving mechanism comprising a hydraulic cylinder 122 for tilting the hopper portion 11. The hopper unit 11 is moved in the vertical direction by the link mechanism 121 while maintaining a substantially horizontal state in the apparatus. The hopper portion 11 is tilted by the hydraulic cylinder 122 with the end portion on the side of transferring the paving material of the hopper portion 11 to the hydraulic excavator 2 as a fulcrum. As shown in FIG. 3 (c), when the hopper portion 11 is tilted by the hydraulic cylinder 122, the end portion on the side of receiving the pavement material of the hopper portion 11 is the end on the side of delivering the pavement material to the hydraulic excavator 2. It is higher than the part.

The capacity of the pavement material that can be received by the pyramid part 11a of the hopper part 11 preferably corresponds to the capacity of the pavement material manufacturing apparatus (at full operation) from the viewpoint of efficiency, for example, 0.1 to 0.3 m. ³ is appropriate. In the present embodiment, the capacity is, for example, 0.2 m ³ .

  Further, the link mechanism 121 that moves the hopper portion 11 in the vertical direction in the apparatus may have a structure of two pairs of parallel links that are connected at the front end portion and the rear end portion of the hopper portion 11. In the present embodiment, the hydraulic cylinder 122 constituting a part of the mechanical mechanism unit 12 is an example, and various mechanisms such as an air cylinder can be used as long as the mechanism can tilt the hopper unit 11 from a substantially horizontal position to an inclined position. An actuator can be employed. The link mechanism 121 that constitutes a part of the mechanical mechanism unit 12 may also be a mechanism that can move the hopper unit 11 in the vertical direction while maintaining a substantially horizontal state in the apparatus. A link such as a parallel link is used. The mechanism is not limited. The power of the hopper device 1 can be obtained by an engine or a motor. As the power of the link mechanism 121, various driving devices such as an electric cylinder, an engine, a hydraulic pressure, or an electric motor can be adopted.

  The excavator 2 includes a bucket 23 as an attachment. The bucket 23 is operated by a hydraulic cylinder 22 that functions as an actuator of the excavator 2. Specifically, as shown in FIGS. 4 and 5, for example, the excavator 2 has a bucket 23 at the tip of an arm portion 21 extending from a main body portion where a power source and a driver's seat are provided. Yes. The arm portion 21 is provided with a hydraulic cylinder 22. In the present embodiment, the hydraulic cylinder 22 is an example, and various actuators such as an air cylinder can be adopted as long as the mechanism can operate the bucket 23. The power of the excavator 2 can also be obtained by an engine or a motor.

  For example, as shown in FIGS. 3A to 3C, the bucket 23 includes a bucket body 231 that is a container for storing a paving material, and an opening / closing portion 232 that plays a role of opening and closing the open side of the bucket body 231. It is composed of The bucket 23 can store the paving material through the opening / closing of the opening / closing portion 232 and can discharge the paving material to the outside.

  The opening / closing part 232 is formed as a pair so as to surround the bucket body 231 from both ends of the shutter part 2321 and the shutter part 2321 that opens and closes the opening side of the bucket body 231, and the shutter part 2321 defines the opening side of the bucket body 231. It comprises an opening / closing operation part 2322 as a structure for opening and closing. The opening / closing operation unit 2322 is provided with a shaft body 2323 that is a central point for the opening / closing operation. Further, the opening / closing operation parts 2322 are connected to each other by a rod 2324 at the end opposite to the side where the shutter part 2321 is provided. In addition, it is preferable that the opening / closing operation unit 2322 be provided with a key for immobilizing the opening / closing operation unit 2322 to ensure transportation. The opening / closing operation portion 2322 is substantially fan-shaped, and a shutter portion 2321 is provided on the substantially fan-shaped arc side, and a rod body 2324 is provided on the substantially fan-shaped main side.

The capacity of the bucket body 231 is preferably 0.2 to 0.8 m ³ from the viewpoint of efficient construction, for example. In the present embodiment, the capacity is 0.4 m ³ , for example. From the viewpoint of efficiency, the larger the capacity of the bucket body 231, the better. However, as the weight of the bucket body 231 increases, it is necessary to increase the size of the hydraulic excavator 2, and it becomes impossible to cope with a narrow work site. Therefore, the capacity of the bucket body 231 is appropriately about 0.2 to 0.8 m ³ .

  As shown in FIGS. 4A and 4B, the hydraulic excavator 2 can rotate the bucket 23 by using the tip of the arm portion 21 as a fulcrum (center point) by the hydraulic cylinder 22. When the bucket 23 is located on the side of the main body where the cab or the like is provided with respect to the arm portion 21, the shutter portion 2321 that is the opening / closing side thereof is directed downward (ground side). When the bucket 23 is positioned outside the arm portion 21, the shutter portion 2321 on the opening / closing side is directed upward (the sky side).

  In the method for transporting a pavement material to a pavement position according to the present invention, as shown in FIG. 1, the following steps are generally performed using a hopper device 1 and a hydraulic excavator 2. In addition, in FIG. 1, the outline | summary of all the processes of the conveyance method of the pavement material to the pavement position which concerns on this invention is represented.

(1) Material acceptance process (see also Fig. 2)
In the material receiving step, each raw material is mixed, and FRC or SFRC is directly fed into the pyramid portion 11a of the hopper portion 11 in the hopper device 1 from the manufacturing apparatus E that manufactures FRC or SFRC as a pavement material. Further, the FRC or SFRC supplied from the manufacturing apparatus E to the hand-held unicycle U is thrown into the pyramid portion 11 a of the hopper portion 11 through the hand-held unicycle U. Or these are used together. When performing these in combination, a plurality of, for example, two hopper devices 1 can be introduced. Note that the FRC or SFRC supplied from the manufacturing apparatus E can be directly input to the bucket 23 of the excavator 2 without being input to the hopper portion 11 of the hopper apparatus 1.

(2) Material transfer process (see also Fig. 3)
In the material transfer process, the FRC or SFRC received by the hopper 11 is lifted to the upper position by, for example, a parallel link as the link mechanism 121, and further the hopper 11 is tilted by the hydraulic cylinder 122 and transferred to the bucket 23 of the excavator 2. Change.

(3) Transporting process (see also Fig. 4)
In the transporting process, in the excavator 2, the bucket 23 containing FRC or SFRC is operated by the hydraulic cylinder 22, and the bucket 23 is closed by the opening / closing part 232 while using the ground, and the bucket 23 is rotated in that state. It is located closer to the main body than the arm portion 21. Subsequently, the excavator 2 is turned around the main body, and the excavator 2 transports the FRC or SFRC toward the pavement position. When the excavator 2 turns and transports the FRC or SFRC to the pavement position, the opening / closing side (shutter portion 2321) of the bucket 23 faces downward (the ground side).

(4) Material release process (see also FIG. 5)
In the material release process, in the hydraulic excavator 2 that has reached the pavement position, the bucket 23 containing FRC or SFRC is operated by the hydraulic cylinder 22, and the opening / closing part 232 is opened while using the arm portion 21, and the FRC or Releases SFRC. In particular, the bucket 23 is operated by the hydraulic cylinder 22 so that the release of FRC or SFRC is always performed at a constant height, and the open / close side thereof is fixed at a predetermined height. The movement of the bucket 23 to the front and rear and to the left and right when releasing FRC or SFRC is handled by moving the arm portion 21 or the hydraulic excavator 2.

  After that, the FRC or SFRC released at the pavement position may be advanced to a process of actually paving the steel deck using the spreader S which is a pavement construction machine.

  Note that, as described above, the FRC or SFRC supplied from the manufacturing apparatus E may be directly input to the bucket 23 of the excavator 2 without being input to the hopper portion 11 of the hopper apparatus 1 in the material receiving process.

  Hereinafter, an embodiment as an example of reinforced concrete pavement construction of an existing bridge based on a method for transporting pavement material to a pavement position according to the present invention will be described with reference to the drawings (particularly, FIGS. 2 to 6). Go.

  In this embodiment, as shown in FIG. 6, in carrying out the method for transporting the pavement material to the pavement position in the reinforced concrete pavement work of the existing bridge, the existing pavement has already been removed and a steel deck has appeared. . The surface is also cleaned. Adhesive (expressed by shading) is applied near the pavement position, making it impossible to move heavy machinery on the ground (steel deck). In addition, the passage of vehicles other than the construction lane is not restricted, and the work range is only the construction lane and is narrow. In the present embodiment, a plurality of paving material (FRC or SFRC) manufacturing apparatuses E, for example, two, are installed in tandem (tandem) in the traveling direction of the lane in order to increase the efficiency of construction. The distance from the pavement position where the construction machine (spreader S) is installed to the far side of the pavement material manufacturing apparatus is 130 m.

  In such a situation, first, as shown in FIGS. 2 (a) and 2 (b), as the material receiving process, the first FRC or SFRC (for example, the rear side in the direction of travel of the lane) is manufactured. FRC or SFRC is directly supplied from the manufacturing apparatus E to the pyramid part 11 a of the hopper part 11 in the hopper apparatus 1. In addition, the FRC or SFRC supplied from the second manufacturing apparatus E (for example, the front side in the lane traveling direction) to the hand-held unicycle U is changed to the hopper portion 11 in the same hopper apparatus 1 via the hand-held unicycle U. Put into the pyramid part 11a. As shown in FIGS. 2 (a) and 2 (b), the position of the hopper portion 11 of the hopper device 1 is lower (position close to the ground).

  The FRC or SFRC supplied from the first manufacturing apparatus E is directly thrown into the bucket 23 of the hydraulic excavator 2, and the FRC or SFRC supplied from the second manufacturing apparatus E to the hand-held unicycle U is You may make it throw in into the pyramid part 11a of the hopper part 11 in the hopper apparatus 1 via the hand-held type unicycle U. FIG.

In the present embodiment, the manufacturing apparatus E that manufactures FRC or SFRC can manufacture 0.2 m ³ of FRC or SFRC per batch, respectively. Also, 8.0 m ³ FRC or SFRC per hour can be produced. Direct injection of FRC or SFRC from the manufacturing apparatus E to the hopper unit 11 or the bucket 23 of the excavator 2 is performed intermittently at intervals of 1.5 minutes, and FRC or RR to the hopper unit 11 via the hand-held unicycle U or The SFRC is continuously input.

Further, as a material transfer process, as shown in FIG. 3A, in the hopper device 1, a predetermined amount (for example, 0.2 m ³ corresponding to one batch) of FRC or SFRC is accumulated in the pyramid portion 11a. Then, as shown in FIG. 3 (b), the hopper 11 is lifted by the link mechanism 121 and positioned higher. Next, as shown in FIG. 3C, the hopper portion 11 is tilted by the hydraulic cylinder 122. As a result, a predetermined amount (for example, 0.2 m ³ ) of FRC or SFRC is transferred along the inclination of the hopper 11 to the bucket 23 of the excavator 2 waiting at a predetermined position. In this embodiment, since the loading capacity of the bucket 23 of the excavator 2 is 0.4 m ³ , the material transfer process is performed twice, and then the process proceeds to the next process.

Subsequently, as a transportation process, after a predetermined amount (for example, 0.4 m ³ ) of FRC or SFRC is accommodated in the bucket 23, the bucket 23 is operated by the hydraulic cylinder 22 as shown in FIG. The bucket 23 is closed so that the openable opening / closing part 232 is upright. Specifically, the operation of closing the open side of the bucket body 231 by the shutter unit 2321 is performed by a mechanism using the ground.

  First, the end of the opening / closing operation unit 2322 opposite to the side where the shutter unit 2321 is provided is grounded to the ground. In this state, by operating the arm portion 21 while fixing the hydraulic cylinder 22, the opening / closing operation portion 2322 is moved about the shaft body 2323 as a center (fulcrum), and the shutter portion 2321 is interlocked with this to move the bucket body 231. The open side is closed. After the open side of the bucket body 231 is closed, it is preferable to lock the opening / closing operation part 2322 with a key and to make the opening / closing operation part 2322 immovable in order to ensure transportation.

  Further, the hydraulic cylinder 22 is operated to rotate the bucket 23 so that the open / close side (shutter portion 2321) faces downward (the ground side), and a cab or the like is provided for the bucket 23 rather than the arm portion 21. Position it on the main body side. In this state, as shown in FIG. 4B, the FRC or SFRC is transported toward the pavement position by turning around the main body of the hydraulic excavator 2 with a minimum turning radius. In carrying out the present invention, it is not always necessary to position the bucket 23 on the main body side of the arm portion 21 in order to transport the FRC or SFRC to the pavement position. There is a merit that it will not hinder the passage of vehicles.

  Finally, as a material release process, the arm portion 21 of the hydraulic excavator 2 that has reached the vicinity of the pavement position is extended, and the upper part of the ground to which the adhesive has already been applied is passed through the bucket 23 containing FRC or SFRC. The bucket 23 is delivered to the pavement position. Subsequently, as shown in FIGS. 5A and 5B, the bucket 23 is operated by the hydraulic cylinder 22, the opening / closing part 232 is opened using the arm part 21, and FRC or SFRC is released at the pavement position. Specifically, an operation of opening the opening side of the bucket body 231 by the shutter unit 2321 is performed by a mechanism using the arm unit 21. The key that has been closed to ensure transportation is unlocked when the bucket 23 is delivered to the pavement position.

  That is, as shown in FIG. 5B, the hydraulic cylinder 22 is used to rotate the bucket 23, and the opening / closing operation portion 2322 is provided at the end opposite to the side where the shutter portion 2321 is provided. The rod body 2324 is brought into contact with the arm portion 21. By further advancing this state, the opening / closing operation part 2322 is moved around the shaft body 2323, the shutter part 2321 is interlocked with this to open the open side of the bucket body 231, and FRC or SFRC is released.

  In particular, the bucket 23 is operated by the hydraulic cylinder 22 so that the release of the FRC or SFRC is always performed at a constant height, and the open / close side (shutter portion 2321) is fixed at a predetermined height. This is because the amount per unit area of the FRC or SFRC to be released is made uniform to some extent, and the burden on the work of leveling the necessary unevenness for the pavement work using the subsequent construction machine (spreader S) is suppressed.

  In the above embodiment, the ground and arm 21 are used when opening and closing the shutter portion 2321 of the bucket 23, but an additional actuator such as a hydraulic cylinder is additionally installed in the hydraulic excavator 2. You can also Since the hydraulic excavator 2 is normally equipped with a set of hydraulic piping spares for various attachments, this spare can be used. In this case, there is an advantage that work such as locking the opening / closing operation unit 2322 with a key is not necessary.

  Here, in the said embodiment, since it calculated about the personnel required when two manufacturing apparatuses E were fully operated, it demonstrates below. If the conventional method is adopted when two paving material manufacturing apparatuses E are fully operated and the paving work is carried out, 33 or more hand-held unicycles U and personnel related thereto are required as described above. . In the present embodiment, the distance from the pavement position where the construction machine is installed to the far side of the FRC or SFRC manufacturing apparatus is set to 130 m.

First, the capacity of FRC or SFRC that can be mounted on the hand-held unicycle U is 0.032 m ³ . Accordingly, 6.25 hand-held unicycles U are required for one batch (0.2 m ³ ) of one FRC or SFRC manufacturing apparatus E. As described above, since the manufacturing apparatus E can manufacture 8.0 m ³ of FRC or SFRC per hour, the minimum cycle time for one batch (at the time of full operation) is 1.5 minutes (0.2 m ³ × 60 minutes / 8.0 m ³ ). If the transport speed of the worker handling the hand-held unicycle U is 4 km / hour and the distance from the manufacturing apparatus E to the hopper apparatus 1 is 40 m, the time required for the reciprocation is 1.2 minutes. Alternatively, if the time for unloading SFRC and waiting loss is 0.25 minutes, the cycle time of the hand-held unicycle U is 1.45 minutes. Then, the number of hand-held unicycles U required when the manufacturing apparatus E is fully operated is about 6 (1.45 minutes / 1.5 minutes × 6.25).

  On the other hand, if the average moving speed of the hydraulic excavator 2 is 15 km / hour (250 m / min) and the distance from the hopper device 1 to the pavement position is 90 m, the time required for the reciprocation is 0.72 minutes (90 m × 2 / If the time for FRC or SFRC unloading and loading is 0.5 minutes, the cycle time is 1.22 minutes. Since the minimum cycle time for one batch of the manufacturing apparatus E is 1.5 minutes, the transportation process and the material discharge process using the hydraulic excavator 2 do not become a bottleneck even if the manufacturing apparatus E is fully operated.

  Then, according to the present invention, the minimum required number of personnel such as six persons working with the hand-held unicycle U, the person in charge of controlling and managing the hopper device 1, the driver of the hydraulic excavator, etc. It is possible to carry out a method for transporting the pavement material to the pavement position, and it is possible to construct a reinforced concrete pavement for an existing bridge using this method. Compared to the conventional (33 or more), about one-fifth of the personnel, a series of transportation of paving material will be realized.

  In the present invention, in consideration of further efficiency, two hopper devices 1 can be introduced to carry out a method for transporting the pavement material to the pavement position. In this case, for example, further efficiency can be achieved by a simple design change in which the capacity of the bucket 23 attached to the attachment of the excavator 2 is doubled.

  On the other hand, considering the width of the construction lane in the reinforced concrete pavement construction of the existing bridge, it is not usually assumed that the excavator 2 is used by using a plurality of (for example, two) excavators 2. For this reason, when introducing a plurality of hopper devices 1, it is preferable to shift the timing at which the mechanical mechanism section 12 including the link mechanism 121 and the hydraulic cylinder operates (timing for performing the material transfer process) for each hopper device 1. Further, it is possible to shift the timing of performing the material transfer process by shifting the timing of proceeding the material input process for each hopper device 1.

In addition, each time an amount corresponding to one batch (0.2 m ³ ) of the FRC or SFRC manufacturing apparatus E is accommodated, the transporting process and the material discharging process may be advanced using the hydraulic excavator 2.

  In the present invention, while performing mechanization using the hopper device 1 and the hydraulic excavator 2 having the bucket 23 having the opening / closing part 232, the material input process, the material transfer process, the transport process, and the material discharge process are efficiently advanced. The pavement material can be transported to the pavement position with the minimum required number of hands. Therefore, it can contribute to construction such as reinforced concrete pavement work of the existing bridge which is efficient in terms of time and cost. Since the paving material is discharged to the ground at the paving position using the arm portion 21, the excavator 2 does not move on the ground to which the adhesive is applied.

  Further, in the present invention, since the bucket 23 is transported by being positioned closer to the main body side than the arm portion 21 of the excavator 2, the excavator 2 can be swung with the minimum turning radius, and the vehicle can pass through other than the construction lane. Can be prevented. The structure of the bucket 23 is devised, and the opening and closing part 232 of the bucket 23 is opened and closed by using the ground or using the arm part 21 of the excavator 2 to simplify the configuration of the bucket 23 Yes. For the work to discharge the pavement material at a predetermined height, equalize the amount per unit area of the released pavement material to some extent, and smooth the unevenness of the required pavement material for the subsequent pavement work using the spreader S Since this burden is suppressed, more efficient construction can be promoted.

Example 1
Here, the structural example of the hopper apparatus which comprises this invention is demonstrated using FIGS. 7-10. The configuration of this hopper device is only an example of the present invention. The present invention can be modified in various ways without departing from the scope of the claims.

  For example, as shown in FIG. 7, the hopper device 30 includes a receiving unit 310 as a material receiving unit that receives a pavement material, and an in-device moving mechanism 320 that moves the receiving unit 310 in the device. It can be moved from position to high position. The hopper device 30 can be provided, for example, as a device that can be used to increase the efficiency of transferring a paving material to a heavy machine when a narrow place is transported manually and then reaches a wide place.

  As shown in FIGS. 7 to 9, the hopper device 30 includes a hopper-like receiving portion 310 in which a pyramid portion 311 that is a recess for receiving a paving material is formed, and an inside of the device that moves the receiving portion 310 in the device. And a moving mechanism 320. The in-apparatus moving mechanism 320 includes lifting / lowering means for raising and lowering the receiving unit 310 from the low position to the high position or from the high position to the low position, and tilting means for lifting the one end portion 310a of the receiving unit 310 and tilting the receiving unit 310. Have.

  In the present embodiment, a parallel link 321 is employed as lifting means for lifting the receiving portion 310 from the low position to the high position or from the high position to the low position. A hydraulic cylinder 322 is employed as the tilting means for lifting and tilting the one end portion 310a of the receiving portion 310. The one side of the hopper device 30 refers to the side on which the paving material is carried to the hopper device 30. That is, the side that receives the pavement material by the receiving unit 310 is referred to as one side of the hopper device 30. In addition, the other side of the hopper device 30 refers to a side where the pavement material is transferred from the hopper device 30 to another, for example, the side where the pavement material is transferred to a storage unit of a heavy machine waiting at a high position.

  The hopper device 30 can raise the receiving part 310 from the low position to the high position while maintaining the substantially horizontal state by adopting the parallel link 321 as the lifting means. Further, the receiving portion 310 can be positioned below one side of the hopper device 30 when in the low position, and can be positioned above the other side of the hopper device 30 when tilted, so that the movement can be easily achieved. However, in the present invention, any lifting / lowering means capable of moving the state and position of the receiving unit 310 can be adopted without being limited to the parallel link 321.

  The hopper device 30 can easily tilt the receiving portion 310 after being raised to a high position by employing the hydraulic cylinder 322 as the tilting means. Further, when the receiving portion 310 is tilted by the hydraulic cylinder 322, a configuration in which the one end portion 310a is lifted and the other end portion 310b is used as a fulcrum, for example, a shaft body 312a is provided on the other end portion 310b and pivotally supported. This can be achieved with an easy structure. However, in the present invention, any lifting and lowering means capable of tilting the receiving portion 310 can be adopted without being limited to the hydraulic cylinder 322. For example, even if an air cylinder or other expanding / contracting actuator is employed, the same effect can be exhibited.

  The hopper device 30 can move (reverse) the pavement material conveying direction in order to move the pavement material that was in one side lower (low position) to the other side upper (high position) and further to another. Absent. When the receiving unit 1 is located at a high position, the other end 310b is a fulcrum above the other side of the hopper device 30, and the one end 310a is lifted and inclined by the hydraulic cylinder 322, The pavement material will flow along the slope and will be moved to the other.

  Hereinafter, the structure of the hopper device 30 will be described in detail with reference to FIGS.

  In particular, as shown in FIG. 7, the receiving portion 310 includes a pyramid portion 311 that is a concave portion that stores a pavement material, and a frame body 312 that surrounds the pyramid portion 311. The bottom portion 311a forming the concave portion of the pyramid portion 311 is inclined so that the concave portion on the one end portion 310a side of the receiving portion 310 is large and the concave portion is reduced toward the other end portion 310b side. Such a concave shape of the pyramid portion 311 is a shape suitable for accommodating more paving material in the pyramid portion 311 while keeping in mind that the other end portion 310b side of the receiving portion 1 is inclined and moved to the other. Become.

  In the receiving part 310, one end 322a of the hydraulic cylinder 322 is connected to the middle of the bottom 311a of the inclined pyramid part 311 (substantially central part). Further, at the other end portion 310b of the receiving portion 310, the frame body 312 is provided with a shaft body 312a serving as a fulcrum when the receiving portion 1 is tilted, and the other end 322b of the hydraulic cylinder 322 is connected. . The other end of the pyramid portion 311 is disposed in contact with the shaft body 312a serving as the fulcrum.

The capacity of the pavement material that can be received by the pyramid portion 311 is preferably, for example, 0.1 to 0.3 m ³ from the viewpoint of efficient construction. In this embodiment, the capacity | capacitance is 0.2 m < ³ > (for 1 batch of the manufacturing apparatus of a pavement material), for example. From the viewpoint of efficiency, it is preferable to correspond to the capacity of the pavement material manufacturing apparatus (at the time of full operation). In this embodiment, it is appropriate to be 0.1 to 0.3 m ³ .

  The parallel links 321 are composed of a total of four rod bodies in two pairs, and are on the frame body 312 on one side and the other side of the main body 31 in the hopper device 30 and on the one end 310a and the other end 310b side in the receiving unit 310, respectively. And connected to. The parallel links 321 move up and down from the low position to the high position or from the high position to the low position while the two to four pieces always operate in parallel so that the receiving section 310 remains substantially horizontal. Moreover, the pavement material which was on the one side lower side (low position) can be moved to the other side upper side (high position) without going against (reversing) the conveyance direction of the pavement material. As a power source for operating the parallel link 321, various drive devices such as an electric cylinder, an engine, a hydraulic pressure, or an electric motor can be adopted.

  As described above, one end 322a of the hydraulic cylinder 322 is connected to the middle of the inclination of the bottom 311a of the pyramid 311 (substantially the center). The other end 322 b of the hydraulic cylinder 322 is connected to the frame body 312 of the other end 310 b of the receiving unit 310. Since the frame body 312 is pivotally supported by the shaft body 312a at the other end portion 310b, the hydraulic cylinder 322 is expanded and contracted to lift the receiving portion 310 at the one end 322a with the other end 322b as a fulcrum. .

  Thereby, the one end part 310a side of the receiving part 310 is lifted, and the pyramid part 311 inclines. Since the other end portion of the pyramid portion 311 is disposed in contact with the shaft body 312a, it is substantially immobile. Further, when the hydraulic cylinder 322 expands and contracts and lifts one end of the pyramid portion 311, the parallel link 321 does not move. This is because the 2 to 4 rod bodies of the parallel link 321 are all connected on the frame body 312.

  As a power source for operating the hydraulic cylinder 322, various driving devices such as an electric cylinder, an engine, a hydraulic pressure, or an electric motor can be adopted. Further, the hopper device 30 can be provided with wheels on the main body 31 and provided with an engine or the like so as to be able to travel by itself for convenience of movement. In view of the operation of the hopper device 30 and the like, it is preferable to provide a handrail.

  Hereinafter, the operation of the hopper device 30 will be described in detail with reference to FIG.

  First, the pavement material is directly charged into the pyramid portion 311 of the receiving unit 310 in the hopper device 30 from the manufacturing apparatus for manufacturing the pavement material. The pavement material supplied from the manufacturing apparatus to the hand-held unicycle is fed into the pyramid portion 311 of the receiving unit 310 via the hand-held unicycle. Or these are performed together. When these are used in combination, it is preferable that a plurality of, for example, two hopper devices 30 are introduced. At this time, as shown in FIG. 10A, in the hopper device 30, the receiving part 310 is located on one side lower side (low position). Therefore, the pavement material can be easily put into the pyramid portion 311 of the receiving portion 310 at the low position easily through the hand-drawn unicycle as well as directly from the manufacturing apparatus.

  Next, the pavement material received by the pyramid portion 311 of the receiving portion 310 lifts the pyramid portion 311 to a high position by the parallel link 321 while maintaining a substantially horizontal state. Accordingly, as shown in FIG. 10 (b), the pavement material is not spilled from the pyramid portion 311 to the outside and the pavement material is transported from one side lower side (low position) without countering the conveyance direction of the pavement material. It can be transferred to the upper side (high position) on the other side.

  Further, as shown in FIG. 10C, on the other side upper side (high position) of the hopper device 30, one end side 310a of the receiving portion 310 in the pyramid portion 311 is lifted by the hydraulic cylinder 322, and the receiving portion 310 (pyramidal portion). 311) is tilted. At this time, the other end portion of the pyramid portion 311 is substantially immovable because the shaft body 312a of the frame body 312 serving as a fulcrum for tilting the receiving portion 310 is disposed in contact with the fulcrum. Since the other end of the pyramid 311 is fixed and the pyramid 311 is inclined, the receiving portion 310 is transferred to the bucket of the excavator that has been waiting at a predetermined position without spilling the pavement material accommodated in the pyramid 311. It can be moved and moved along the inclination of the (pyramid portion 311).

(Example 2)
Moreover, the bucket provided with the opening-and-closing part which comprises this invention, and the structural example of the hydraulic shovel which has this bucket are used for FIGS. 11-18, The opening-and-closing bucket apparatus 40 and the hydraulic pressure provided with this opening-and-closing bucket apparatus 40 This will be described as an excavator 50. The configuration of the hydraulic excavator having this bucket is only an example of the present invention. The present invention can be modified in various ways without departing from the scope of the claims.

  As shown in FIG. 11, a hydraulic excavator 50 includes a main body 51 including a power source, a driver's cab, and the like, a boom 52 on the main body 51 that constitutes an arm extending from the main body 51, and an arm on the distal end side. 53. The open / close bucket device 40 includes a bucket body 41 having an open side and an open / close member 42 that opens and closes the open side of the bucket body 41, and is attached to a mounting portion 531 at the tip of an arm 53 of the excavator 50.

  Necessary before applying a construction machine (spreader) that spreads the paving material from a certain height on the road surface and aligns the unevenness of the paving material as much as possible by the open / close bucket device 40 and the hydraulic excavator 50 equipped with the same. Work can be done simply. Thereby, shortening of working time and reduction of construction cost can be aimed at.

  In the hydraulic excavator 50, a boom 52 and an arm 53 are provided with hydraulic cylinders 52a and 53a that function as actuators, respectively. The hydraulic cylinders 52 a and 53 a together with the boom 52 and the arm 53 are operated by a person who gets into the cab of the main body 51. The open / close bucket device 40 attached to the attachment portion 531 is rotated about the shaft 531 a by the hydraulic cylinder 53 a of the arm 53. In the present embodiment, the hydraulic cylinders 52a and 53a are examples, and various actuators such as an air cylinder can be employed. The power of the excavator 50 can be obtained by an engine or a motor.

  The main body 51, the boom 52, the arm 53, the hydraulic cylinders 52a and 53a, and the mounting portion 531 at the tip of the arm 53 in the excavator 50 are each achieved by a known configuration. The attachment part 40 a of the openable bucket apparatus 40 having a structure that can be attached to the attachment part 531 is provided in the bucket body 41 that constitutes the openable bucket apparatus 40.

  As described above, the openable bucket apparatus 40 has a bucket body 41 that is open on one side and serves as a container for storing pavement material and the like manufactured by the manufacturing apparatus, and an open / close member 42 that opens and closes the open side 41 a of the bucket body 41. It consists of. As shown in FIG. 12, the bucket body 41 is a container that stores a paving material manufactured by a manufacturing apparatus, and has a substantially rectangular parallelepiped shape in which one side, that is, one of six surfaces is opened. . Of the four sides of the open side 41a formed by opening one surface, two opposite sides correspond to the shape of the opening / closing member 42 (substantially fan-shaped shape of the opening / closing operation unit 422 described later), (In particular, see FIG. 12A).

In the present embodiment, the capacity of the bucket body 41 is preferably, for example, 0.2 to 0.8 m ³ from the viewpoint of efficient construction. In the present embodiment, the capacity is 0.4 m ³ , for example. From the viewpoint of efficiency, the larger the capacity of the bucket body 41, the better. However, as the weight of the bucket body 41 increases, it is necessary to increase the size of the hydraulic excavator 2, and it becomes impossible to cope with a narrow work site. Therefore, the capacity of the bucket body 11 is suitably about 0.2 to 0.8 m ³ .

  The opening / closing member 42 includes a shutter part 421 serving as an opening / closing body on the opening side 41a of the bucket body 41, and an opening / closing operation part 422 formed as a pair so as to surround the bucket body 41 from both ends of the shutter part 421. It is configured. The opening / closing operation part 422 is formed in a substantially fan shape. Since the shutter part 421 is provided along the arc-shaped curve on the arc side of the substantially fan-shaped arc of the opening / closing operation part 422, the shutter part 421 is formed with a curved surface having a circular arc cross section.

  The opening / closing operation unit 422 includes a shaft body 422a serving as a central point for the opening / closing operation, and the opening / closing operation unit 422 having an end portion opposite to the side where the shutter unit 421 is provided, that is, a substantially fan-shaped element. A round bar 423 is provided as a connecting body connected on the side. Further, a locking portion 424 is provided that maintains the state in which the open side 41a of the bucket body 41 is closed by the shutter member 421, and restricts the movement of the opening and closing member 42 itself so as not to move. A bucket body side locking structure (not shown) for establishing locking by the locking portion 424 is formed on the outer surface of the bucket body 41 corresponding to the position of the locking portion 424.

  The shaft body 422a serves as a fulcrum for an opening / closing operation of opening / closing the opening side 41a of the bucket body 41 by the shutter portion 421. The shaft body 422 a is provided near the center of the opening / closing operation unit 422, passes through the opening / closing operation unit 422, and is connected to the bucket body 41. The locking part 424 is also provided near the center of the opening / closing operation part 422, and forms a locked state with the bucket body side locking structure of the bucket body 41 during locking.

  A projecting piece 422b for providing a round bar 423 for connecting the opening / closing operation parts 422 to each other is formed on the main side of the opening / closing operation part 422. The reason why the protruding piece 422b is formed and the round bar 423 is provided on the protruding piece 422b is that the opening side 41a of the bucket body 41 is closed by the opening / closing member 42 and the protruding piece 422b is grounded to the road surface, as will be described later. This is to achieve this by rotating the shaft body 422a of the opening / closing operation unit 422 as a fulcrum. Further, the opening side 41 a of the bucket body 41 is opened by the opening / closing member 42 by bringing the round bar 423 into contact with the arm 53 of the excavator 50.

  In the present embodiment, the connecting body that connects the opening / closing operation units 422 is the round bar 423, but the connecting body such as various square bars can be used without being limited thereto. The connecting body is required to have a shape that allows the opening / closing operation portions 422 to be connected to each other, to contact the arm 53 of the excavator 50 and to contact the road surface, and based on this, the opening / closing operation of the opening / closing bucket device 40 For example, having a structure and strength capable of performing the above.

  Hereinafter, the operation of the hydraulic excavator 50 including the openable bucket apparatus 40 having the above-described configuration will be described as an example when applied to road pavement work with reference to the drawings (particularly, FIGS. 13 to 18). The following description is only an example of the present invention, and the present invention is not limited to this embodiment.

  First, as shown in FIG. 13, the raw material is mixed, and the opening / closing bucket device 40 attached to the excavator 50 is directly or via a hand-held unicycle U from the manufacturing apparatus E that manufactures the pavement material. Input paving material. At this time, the open side 41a of the bucket body 41 is not closed (opened) by the shutter part 421 (opening / closing member 42) by inclining the substantially fan-shaped opening / closing operation part 422. By tilting the substantially fan-shaped opening / closing operation part 422, the protruding piece 422b provided on the main side of the opening / closing operation part 422 comes into contact with the road surface.

  When the introduction (accommodation) of the paving material into the open / close bucket device 40 is completed, the bucket body 41 is closed by the open / close member 42. Specifically, as shown in FIG. 14A, the projecting piece 422b of the opening / closing operation part 422 of the opening / closing member 42 is fixed in contact with the road surface, so that the boom 52 of the hydraulic excavator 5 is supported by this. The opening / closing operation part 422 is operated using the arm 53 and the hydraulic cylinders 22a and 23a, and the open side 41a of the bucket body 41 is closed.

  As shown in FIG. 14B, the opening side 41a of the bucket body 41 is closed by the shutter member 421 when the opening / closing operation unit 422 rotates around the shaft body 422a. When the opening side 41 a of the bucket body 41 is closed by the shutter member 421, the main side end of the opening / closing operation unit 422 comes into contact with the road surface.

  When the opening side 41 a of the bucket body 41 is closed by the opening / closing member 42, the bucket body 41 is locked by the locking portion 424 near the center of the opening / closing operation portion 422, thereby forming a locked state between the opening / closing member 42 and the bucket body 41. In this state, as shown in FIG. 15, the open / close bucket device 1 is rotated by the boom 52, arm 53, and hydraulic cylinders 52 a, 53 a of the hydraulic excavator 5, so Position on the side.

  Subsequently, as shown in FIG. 16, the hydraulic excavator 50 is turned by 180 degrees with the minimum turning diameter around the main body 51, and the pavement material is conveyed toward the pavement position. When the openable bucket device 40 is positioned closer to the main body than the arm 53 and when the excavator 5 is turned to transport the paving material to the paving position, the open side 41a (shutter 421) of the bucket main body 41 is used. ) Is facing down (road side).

  When the pavement position is reached, as shown in FIG. 17, the boom 52 and arm 53 of the excavator 5 and the hydraulic cylinders 52 a and 53 a are operated to extend the boom 52 and arm 53 and open the openable bucket device 40. As shown in FIG. 18 (a), the hydraulic excavator 50 is operated to lower the opening / closing bucket device 40 to a predetermined height to unlock the locking portion 424 of the opening / closing operation portion 422, and then the opening side of the bucket body 41 41 a is opened by the opening / closing member 42.

  Specifically, as shown in FIG. 18B, a round bar 423 provided on the protruding piece 422 b of the opening / closing operation unit 422 in the opening / closing member 42 is brought into contact with the arm 53. Based on this contact, the opening / closing operation portion 422 rotates about the shaft body 422a, and the opening side 41a of the bucket body 41 is gradually opened by the shutter member 421. In addition, since pavement material etc. are discharge | released from the bucket main body 41 to the road surface, the pavement material etc. in a position higher than the open side 41a of the bucket main body 41 remain in the bucket main body. .

  However, by operating the boom 52, arm 53 and hydraulic cylinders 52a, 53a of the hydraulic excavator 50 and moving the bucket body 51 horizontally back and forth or left and right at the same height, the pavement that remains in the bucket body 41 is maintained. Material and the like can be discharged to the road surface. Thereby, the quantity per unit area of the pavement material to discharge | release can be equalized to some extent. And, it is possible to simplify the necessary work before applying the pavement construction machine to level the unevenness by aligning the height of the pavement material as much as possible, and to align the height of the pavement material.

  Note that no skill is required to operate the boom 52 and arm 53 of the excavator 50 and the hydraulic cylinders 52a and 53a to fix the bucket body 41 at a predetermined height. In addition, when the shutter unit 421 of the open / close type bucket apparatus 40 is opened and closed, the ground or the arm 53 is used. However, an actuator such as a hydraulic cylinder may be additionally installed in the hydraulic excavator 50 and used. it can. This is because the hydraulic excavator 50 is normally provided with a set of spare hydraulic pipes for various attachments, and this spare can be used. In this case, there is an advantage that the locking part 424 is not necessary.

  As mentioned above, although embodiment regarding this invention was described, this invention is not limited to the said embodiment. The present invention can be modified in various ways without departing from the scope of the claims. For example, in the said embodiment, the example of the conveyance method of the pavement material to the pavement position implemented in the case of the reinforced concrete pavement construction of an existing bridge was taken up. Therefore, FRC or SFRC is adopted and described as an example of the pavement material to be transported.

  However, the present invention is not limited to application to reinforced concrete pavement work for existing bridges that employ FRC or SFRC, and can be applied to various pavement work. Of course, the pavement material to be transported is not limited to FRC or SFRC, but can be applied even to goose asphalt or the like.

DESCRIPTION OF SYMBOLS 1 ... hopper apparatus 11 ... hopper part 11a ... pyramid part 12 ... mechanical mechanism part 121 ... link mechanism 122 ... hydraulic cylinder 2 ... hydraulic excavator 21 ... arm part 22 ... ··· Hydraulic cylinder 23 ··· Bucket 231 · · Bucket body 232 · · Opening and closing portion 2321 · Shutter portion 2322 · Opening and closing operation portion 2323 · Shaft body 2324 · Rod body 2325 · Key 30 · · · Hopper device (Example 1)
31 ... Main body (Example 1)
310 .. Receiving part (Example 1)
310a, one end (Example 1)
310b, the other end (Example 1)
311 .. Pyramid part (Example 1)
311a / Bottom (Example 1)
312 .. Frame body (Example 1)
312a / Shaft (Example 1)
320..Movement mechanism in apparatus (Example 1)
321 .. Parallel link (Example 1)
322 ・ ・ Hydraulic cylinder (Example 1)
322a, one end (Example 1)
322b, the other end (Example 1)
40. Open / close bucket device (Example 2)
40a .. Attachment part (Example 2)
41 ... Bucket body (Example 2)
41a..Open side (Example 2)
42 Opening / closing member (Example 2)
421..Shutter (Example 2)
422 .. Opening and closing operation part (Example 2)
422a-shaft (Example 2)
422b / Projection piece (Example 2)
423 .. Round bar (Example 2)
424 .. Locking part (Example 2)
50 ... Hydraulic excavator (Example 2)
51 ... Main body (Example 2)
52 ... Boom (Example 2)
52a..Hydraulic cylinder (Example 2)
53. Arm (Example 2)
531 ・ ・ Mounting part (Example 2)
531a / axis (Example 2)
53a ・ ・ Hydraulic cylinder E ・ ・ ・ ・ Manufacturing equipment U ・ ・ ・ ・ Hand-held unicycle S ・ ・ ・ ・ Spreader (Construction machine)

Claims (6)

A hopper device having a material receiving portion and an in-device moving mechanism for moving the material receiving portion in the device, a bucket having an opening / closing portion, and an arm portion having an actuator for operating the bucket is a main body portion A pavement material transport method to a pavement position using a transport body extending from
A material input step of inputting a pavement material to the material receiving unit;
A material transfer step of transferring the pavement material received by the material receiving unit from the material receiving unit to the bucket by the movement mechanism in the apparatus;
A conveying step of operating the bucket by the actuator to close the opening and closing unit and conveying the pavement material accommodated in the bucket toward the pavement position by the carrier;
A material release step of operating the bucket by the actuator to open the opening and closing unit and releasing the paving material carried by the carrier at the paving position;
Only including,
In the carrying step, closing the opening / closing part by grounding the opening / closing operation part of the opening / closing part to the ground ,
A pavement material transport method to a pavement position characterized by the above. In the material release step, the opening / closing part is opened by bringing the opening / closing operation part into contact with the arm part ,
The method for transporting paving material to the paving position according to claim 1. In the material charging step, the pavement material is charged into the material receiving unit directly from the pavement material manufacturing apparatus and / or using a hand-held unicycle .
The method for transporting a pavement material to a pavement position according to claim 1 or 2. In the transporting step, the bucket is transported by being positioned closer to the main body than the arm of the transporter .
The method for transporting a pavement material to a pavement position according to any one of claims 1 to 3, wherein the pavement material is transported to the pavement position. In the material release step, the pavement material is released at a predetermined height .
The method for transporting a pavement material to a pavement position according to any one of claims 1 to 4, wherein the pavement material is transported to the pavement position. Using a plurality of the hopper devices ;
The method for transporting a pavement material to a pavement position according to any one of claims 1 to 5, wherein the pavement material is transported to the pavement position.

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