JPH0431313Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> The present invention relates to a concrete spreading vehicle that can efficiently place concrete for buildings, particularly when constructing large structures such as dams. It is.

<Prior Art> As a conventional method for pouring concrete into a large structure such as a dam, there is a method shown in FIGS. 4 and 5, for example. In this concrete placing method, a trestle 1 is constructed at a suitable position to cover the concrete placing area, and a concrete placing crane 2, such as a traveling type jib crane, is installed on top of this trestle 1. The crane 2 then places concrete while moving over the trestle 1. The crane 2 includes a wire 4 for suspending a bucket 3 filled with concrete, a beam 5 that supports the wire 4 and adjusts and determines the position at which the concrete is released from the bucket 3, and also hoists the wire 4. It has a winch etc. for lowering the crane and a transport mechanism for moving the crane 2 itself. Trestle 1
A bunker line 6 is stretched along the trestle 1, and a bunker line truck 7 is engaged with the bunker line 6 to transport the bucket 3 filled with concrete or empty. It's becoming like that.

To place concrete, the area to be concreted is divided into several blocks 8, and the crane 2 is appropriately moved for each block to receive and place concrete.

<Problems to be solved by the invention> However, in such a conventional concrete placing method, the crane 2 lifts the concrete-filled bucket 3 carried by the bunker line truck 7, and the current In order to perform concrete placement by moving the block 8 that is currently being placed to the target point and dropping concrete at that position, the crane 2 moves to the concrete placement area as shown by A in Fig. 5. All points within the area must be covered. For this reason, a crane 2 that can cover almost the entire construction site of a dam or the like is required, resulting in an increase in equipment size and cost. In addition, in placing concrete by dropping concrete from a crane, concrete is dropped directly from the sky onto block 8, which is currently being placed, whereas a by-back is in operation within this placing block 8 to compact the concrete. There was a problem that workers were often moving around and moving around, which was dangerous.

The present invention was developed in view of the above-mentioned conventional problems, and its purpose is to pour concrete using a crane that moves over the bulkier plant, bunker lines, and trestles that are used to construct large structures such as dams. In the bucket transport mechanism that moves to the installation site, by installing a concrete spreading vehicle with good maneuverability between the pouring site and the crane, it is possible to avoid increasing the size of the crane equipment and ensure safe work at the pouring site. To provide a concrete pouring vehicle that can securely place concrete and efficiently place concrete.

<Means for solving the problem> The present invention attempts to pour concrete from the adjacent block to the block currently being poured by arranging the adjacent block to the placing block between the crane and the concrete placing block. It is a thing,
The gist is that an upper frame includes a conveyor and a hopper disposed at the proximal end of the conveyor;
It consists of a lower frame equipped with a support stand supported by a traveling movement structure that can move forward, backward, and turn.
The concrete spreading vehicle is characterized in that the lower frame and the lower frame are connected through an elevating device, and wires are stretched between each fulcrum of the conveyor and the winch so that the conveyor can be raised, lowered, or folded in the middle.

<Operation> The concrete spreading vehicle, which is the device of the present invention, is placed in a block close to the placing block, and the tip of the conveyor in the spreading device is installed inside the placing block. When the setting of the concrete spreading vehicle is completed, the concrete bucket is transported by a crane, and the concrete in the bucket is thrown into the hopper of the concrete spreading vehicle. This concrete is then fed onto an operating conveyor system and transported to a pouring block where it is compacted, etc. Depending on the concrete placement situation within the placement block, the concrete spreading vehicle moves between the crane and the placement block by itself using a travel mechanism, and lifts and lowers the conveyor using the lifting device, and moves up and down the conveyor device. By making a center bend, the concrete is supplied evenly into the pouring block.

<Embodiment> FIGS. 1 to 3 are diagrams showing an embodiment of the present invention. In this embodiment, the concrete spreading vehicle 9 includes a hopper 11, a winch 12 attached to the upper end of a support column 14 on the conveyor 10, and a wire 13 stretched between the winch 12 and each fulcrum 10a, 10b of the conveyor 10. an upper frame 15 equipped with a conveyor device including an operating member constructed of; a traveling movement mechanism capable of forward, backward, and turning having a caterpillar 16, etc.; and a support base 17 supported by this traveling movement mechanism. The upper frame 15 and the lower frame 18 are connected via a lifting device using a jack 19. In this embodiment, the conveyor 10 is made up of a plurality of belt conveyors connected in a substantially horizontal direction so as to be bent in an articulated manner, and a winch 1
2 and a wire 13, it is possible to perform the undulation and bending. Hotupa 1
1 is positioned at the proximal end of the conveyor 10, while the distal end of the conveyor 10 extends laterally by a predetermined distance from the side edges of the upper frame 15 and lower frame 18. The jack 19 can lift the upper frame 15 upward, move it downward, and raise and lower the upper frame 15 by operating the jack 19. The traveling mechanism also has a function of causing the concrete spreading vehicle 9 to travel by itself through the operation of the caterpillar 16 and the like, and as a result, causing the conveyor device to rotate. Further, a controller 21 is installed on the support base 17, and is adapted to control the operations of the conveyor 10, winch 12, caterpillar 16, and the like.

The operation of pouring concrete at a construction site using the concrete spreading vehicle 9 of the present invention having such a configuration will be explained. As shown in FIG. 3, the construction site is divided into a number of blocks 8 in which concrete is to be poured. When there is a block to be poured concrete (temporarily referred to as pouring block 8a), the concrete spreading vehicle 9 is moved and placed in a block close to this pouring block 8a (temporarily referred to as adjacent block 8b), and the conveyor The tip portion of 10 is set so as to extend into the casting block 8a. After the concrete spreading vehicle 9 has been installed in this way, the concrete filled in the bucket 3 is transported to above the concrete spreading vehicle 9 using a crane 20 of basically the same type as shown in FIG. Release it towards Hoppa 11. The concrete spreading vehicle 9 conveys the concrete received from the crane 20 from the base end to the distal end by the conveyor 10, and drops it at the pouring point P in the pouring block 8a. When the concrete is piled up at the pouring point P, the conveyor, winch 12 and wire 13
The conveyor 10 is raised, lowered, or folded by a conveyor device consisting of an operating member composed of 1 and 2, or the elevating device of the jack 19 is raised and lowered to maintain a good concrete conveying position. When concrete pouring at the pouring point P is completed, the traveling movement mechanism such as the caterpillar 16 is driven to move the concrete spreading vehicle 9 within the adjacent block 8b, and
The pouring points within a are changed one after another. After concrete is poured, a bibuck is operated in the pouring block 8a to compact the concrete or perform other finishing work.

In this way, the concrete once transported by the crane 20 is transported again by the concrete spreading vehicle 9 from the adjacent block 8b to the placing block 8a.
The bucket 3 suspended from the crane 20 will not get inside. Therefore, a large number of workers can efficiently perform concrete compaction work etc. within the pouring block 8a without encountering any danger. Furthermore, the distance for carrying concrete by the crane 20, which conventionally required a length of L to carry it to the pouring block, is now sufficient to have a length of L to reach the concrete spreading vehicle 9. Therefore, the concrete transportation area that the crane 20 should cover is:
The range shown by B in Fig. 3, which was conventionally A, is now sufficient, making it possible to use a small crane. In this embodiment, a traveling type jib crane is used as an example of the crane, but other types of cranes, such as cable cranes, can also be used to conveniently perform the work by reducing the need to change the cable position.

As mentioned above, in contrast to the previous method in which concrete had to be transported to the entire pouring area using a crane, in this invention a nearby block was set up in addition to the pouring block, and the concrete was placed on this nearby block. In order to transport concrete to the pouring point inside the pouring block using a concrete spreading vehicle, the danger of cranes is avoided within the pouring block, and there are no restrictions on the operation of the vibrator (vibrator for concrete compaction). You can work safely without any problems.

In addition, the concrete spreading vehicle of the present invention can cover the concrete spreading area by its own turning motion, so the crane itself can perform a large number of pours by simply supplying concrete to the concrete spreading vehicle. Results similar to those obtained by transporting concrete to a specific location can be obtained, and it is naturally possible to create complex crane control programs easily.

Furthermore, according to the present invention, the working area of the crane is smaller than that of the conventional crane, and the equipment can be reduced by downsizing the crane.

Furthermore, the concrete spreading vehicle of the present invention is equipped with a lifting device between the lower claim and the upper claim, which creates a level difference between the pouring block at the target pouring point and the adjacent block where the spreading vehicle is installed. We have also made it possible to adequately respond to any situation.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing an embodiment of a concrete spreading vehicle according to the present invention, Fig. 2 is an explanatory diagram showing the concrete spreading state using the present invention, and Fig. 3 is a schematic diagram showing an embodiment of a concrete spreading vehicle according to the present invention. A plan view comparing the transportation area of the crane at a concrete pouring site between the conventional and the present invention, Figure 4 is a schematic diagram of the crane device used for concrete pouring, and Figure 5 is a conventional concrete pouring method. FIG. 1... Trestle, 2, 20... Crane, 3
... Bucket, 8 ... Block, 8a ... Placing block, 8b ... Proximity block, 9 ... Concrete spreader, 10 ... Conveyor, 11 ... Hopper, 12 ... Winch, 13 ... Wire, 14 …
... Support column, 15 ... Upper frame, 16 ... Caterpillar, 17 ... Support stand, 18 ... Lower frame,
19... Jyatsuki, 21... Controller.

Claims (1)

[Scope of claim for utility model registration] When constructing large structures such as dams, a bucket truck is used to transport concrete by connecting a bucket plant with a crane that moves on a trestle that covers bunker lines and concrete placement areas. In the transport mechanism, a nearby block is set between the crane and a placing block for pouring concrete, and the concrete spreading vehicle is installed on the nearby block, and the spreading vehicle is capable of undulation and bending. It consists of an upper frame equipped with a hopper arranged at the proximal end of the conveyor, and a lower frame equipped with a support supported by a traveling structure capable of moving forward, backward, and turning. A concrete spreading vehicle with a lifting device interposed between the lower frame and the upper frame.