JPH0552111U - Concrete pouring equipment - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to perform concrete placement by swiveling freely on the slab reinforcement and directing the tip of the concrete placement pipe to the desired location. [Structure] A plurality of hose support units 1, 1 ... Which are movable on the floor surface on which concrete is to be placed, a flexible hose 2 that connects these hose support units, and the hose support units 1, 1 ... It is equipped with telescopic members 17 and 17 which are connected between the left and right parts and can be telescopically operated, and by selectively expanding and contracting the telescopic members, the hose support units 1, 1 ... It was done like this.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a concrete pouring device that moves on a slab reinforcement before concrete pouring to perform concrete pouring.

[0002]

[Prior Art]

 When concrete is placed on a wide floor surface in building construction, etc., a reinforcing bar is placed on the concrete slab and concrete is placed on it to level it and form a concrete surface. ..

Conventionally, concrete is placed after the reinforcement, mainly depending on the human power, and then flattened by a leveling machine or manually to form a flat concrete surface. Relying on human labor for the work to be installed not only has a low work efficiency, but also requires work on the bar arrangement, which poses a problem in terms of safety.

Therefore, as a method of pouring the concrete by a mechanical means, a base of a bending arm in which a plurality of arms are connected by joints so as to be bendable in a horizontal plane is supported on a base, and the bending is performed. Place a flexible concrete pouring hose along the arm and bend the bending arm so that the tip of the concrete pouring hose is located at the required location on the floor surface. There is something that was designed to be done.

[0005]

[Problems to be solved by the device]

 However, according to the above-mentioned conventional technique, concrete can be placed at any desired location without being damaged by the bar arrangement even on the reinforced floor, but the bending arm is cantilevered. Since the total weight of the bending arm, the concrete hose attached to the bending arm, and the weight of concrete existing in this hose are all loaded on the supporting portion of the base, the structure of the supporting portion and the bending portion are bent. The structure of the joint part of the arm must be extremely strong, and there is a drawback that the entire device becomes large and heavy. Therefore, there is a problem that installation work and removal work after the work is not easy.

In view of this, the present invention can move the tip of a concrete pouring pipe to a desired position by freely moving the bar even on the bar arrangement, and including the pouring pipe. The purpose of the present invention is to provide a concrete pouring device that can be constructed with a small size and low strength as a whole, including the support structure for hoses.

[0007]

[Means for Solving the Problems]

 In order to solve the problems of the above-mentioned conventional techniques, the present invention provides a plurality of hose support units that are movable on the floor surface where concrete is to be placed, and a flexible hose that connects these hose support units. The hose support unit is connected between the right and left parts of the hose support unit, and includes an elastic member that can be expanded and contracted by remote control. By selectively expanding and contracting the elastic member, the hose support unit is swung in an arbitrary direction in a horizontal plane. The sled member can slide on the floor surface on which concrete is to be placed, and the hose holding elastically supported by this sled member by an elastic body such as a spring. The sled member capable of sliding on the floor surface on which the concrete is to be cast, and the casting pipe holding portion provided on the sled member. A stopper unit which is provided below the lower end of the sled member so as to be retractable and has a larger frictional force than the lower surface of the sled member, and a stopper unit connected to the head of the plurality of hose support unit rows This is what is claimed as claim 3.

[0008]

[Action]

 Flexible hoses supported by each hose support unit are connected to each other, and the right and left sides are connected by a stretchable member, and fresh concrete is injected from the casting pipe at the tip of the flexible hose onto the floor surface for casting. At this time, the hose support unit row is swung to the shortened side by shortening (or extending) the telescopic member on the right or left side of the portion where the hose support unit row is to be bent and swung by remote control. As a result, concrete can be placed at desired locations. Further, if the stopper unit is used, it is possible to prevent the placing pipe from moving due to the reaction or pulsation of the concrete injection force during the placing of concrete.

[0009]

【Example】

 Hereinafter, the present invention will be described with reference to the embodiments shown in the drawings.

FIG. 1 shows an example of the overall construction of a concrete pouring device according to the present invention, and FIG. 2 shows its side face. In FIG. 1, in order to make it easier to understand the operation, a straight line state and a bending turning state are shown. At the same time.

The concrete placing device has a large number of hose support units 1, 1 ... Of the same structure which are connected to each other so as to be bent and swivel in a horizontal plane, and are supported by these hose support units 1, 1. A flexible hose 2 is connected in series to form a hose support unit row, and a stopper unit 4 for supporting a concrete casting pipe 3 is connected to the head of the hose support unit row.

The hose support unit 1 is supported at a central position in the width direction of a dish-shaped sled member 5 whose periphery is vertically bent, as shown in a plane in FIG. 3, a side face in FIG. 4, and a front face in FIG. The plate 6 is provided in a state of being separated from the sled member 5, and a hose holding portion 7 for supporting the flexible hose 2 is provided at the center of the support plate 6. As shown in FIG. 5, an example of the hose holding portion 7 is a semicircular recess 8 formed on the support plate 6 side into which the lower half of the flexible hose 2 can be fitted, and both ends of the recess 8. It is composed of a holding member 12 having a semicircular recessed portion 11 which is fastened by bolts 10 to the mounting seats 9, 9 located at a position, and the flexible hose 3 is fitted between these recessed portions to hold it down. The flexible hose 2 is fixed by fastening the member 12 with bolts 10 and 10.

The support plate 6 is a coil spring that is an elastic body between the mounting portions 13 and 13 provided at the ends thereof and the pillar portions 14 and 14 that are erected at the four corners of the sled member 5. 15, 15 ... Are stretched, support the hose holding portion 7 through the support plate 6 in a floating manner, and absorb the pulsation of the flexible hose 2 accompanying the flow of concrete.

Further, mounting portions 16 and 16 are provided on the support plate 6 at the left and right positions of the hose holding portion 7, and flexible hoses are provided between the mounting portions 16 and 16 of the support plate 6 of the adjacent hose support unit 1. The left and right elastic members 17, 17 are connected with the two in between. As the elastic member, for example, as shown in FIG. 12, a tube 19 made of an expandable / contractible material such as rubber is connected between the end fittings 18 at both ends, and compressed air is supplied into the tube 19. As a result, the tube 19 is expanded so that its overall length is shortened. Compressed air supply / discharge pipes 20, 20 are connected to the respective elastic members 17, 17, and these pipes are collectively guided to the end of the hose support units 1, 1 ... In remote control, compressed air is selectively supplied to the desired elastic members 17 and 17. The elastic member 17 is not limited to the rubber tube 19 and may have an air cylinder structure.

The stopper unit 4 has a casting pipe holding portion 22 on a sled member 21 slidable on the floor surface, as shown in a plane in FIG. 6, a side surface in FIG. 7, and a front surface in FIG. In addition, stoppers 23, 23 are provided on both sides of the sled member 21 so as to be retractable below the lower surface 21 a of the sled member 21. The stoppers 23, 23 are made of a member having a frictional force larger than the frictional force of the lower surface 21a of the sled member 21, such as rubber, and have a length approximately the same as the length of the sled member 21 in the front-rear direction. is doing. In this embodiment, a rubber tube 24 is used, and bearings 26, 26 projecting at two positions in the front-rear direction of a holding member 25 that covers the upper half of the rubber tube 24 or more and holds the rubber tube 24. And the lower ends of the links 28 and 29 whose middle portions are pivotally supported on the side surfaces of the sled member 21 by the shafts 27 and 27 are connected by pins 30 and 31, and the upper portions of these links 28 and 29 are connected by a link 32. To form a pair of left and right parallel links, and a handle 33 is extended to the upper end of one of the links 28, and the handle 33 is tilted (shown by a chain line in FIG. 7) to stop the stoppers 23 and 23. The lower surface floats above the lower surface 21a of the sled member 21, and the handle 33 is raised (shown by the solid line in FIG. 7), so that the lower surfaces of the stoppers 23, 23 are located below the lower surface 21a of the sled member 21. It projects so that the stopper unit 4 is grounded on the floor so that it cannot move easily. The vertical movement of the stoppers 23, 23 may be performed manually as shown in the figure, or may be automatically performed by remote operation using an air cylinder or the like.

The driving pipe 3 is made of a pipe, and its rear end is connected to the flexible hose 2. However, this driving pipe 3 is composed of a flexible hose 3'as shown in FIGS. 10 and 11, and the same expansion / contraction portion as above is provided in the upper portion between the mounting portions 34 and 35 provided at the tip and the rear thereof. By connecting the material 36 and shortening the elastic member 36, the tip of the flexible hose 3'can be displaced obliquely upward so that the fresh concrete can be scattered to a distance.

Next, the operation of the above embodiment will be described.

The flexible hoses 2 are inserted into the hose holding portions 7 of the hose support units 1, 1 ... and fastened, and the stopper units 4 are placed at the heads of the rows of the hose support units 1, 1 ,. The driving pipe 3 connected to the tip of the stopper unit 4 is held by the driving pipe holding portion 22 of the stopper unit 4. After setting in this way, the fresh concrete is supplied through the flexible hose 2 and the fresh concrete is poured from the casting pipe 3 at the tip onto the reinforcement of the floor.

In order to transfer the concrete pouring portion, the hose support units 1, 1 ... Rows are bent and swung so that the tip of the pouring pipe 3 faces the pouring portion. That is, when compressed air is remotely supplied to the elastic member 17 on the right side or the left side of the portion to be bent and rotated, the elastic member 17 expands and its length decreases, and it is connected to this. One side of the front hose support unit 1 is drawn, and the expandable telescopic member 17 is bent and swung inside. Further, depending on the degree of the tendency to turn, a large turn can be made by simultaneously operating a plurality of telescopic members 17, 17, ..., And the tip of the driving pipe 3 can be moved to the other side while turning in one direction. If the hose supporting units 1, 1 ... Rows are bent in a meandering manner, the hose supporting units 1, 1 ... At this time, since the flexible hose 2 is bendable, it bends according to the bending of the rows of the hose supporting units 1, 1, ..., And follows in any direction.

At the time of bending and turning, the sled members 5 and 21 slide on the slab reinforcement, and therefore move smoothly. Further, when the fresh concrete is pumped through the flexible hose 2, pulsation occurs in the flexible hose 2, and the support plate 6 of the hose holding portion 7 is flexibly supported by the coil springs 15, 15 ... For the pulsation. This prevents the hose support units 1, 1 ...

When it is necessary to stabilize the pouring pipe 3 during concrete pouring, when the handle 33 of the stopper unit 4 is raised, the stoppers 23, 23 project below the lower surface 21 a of the sled member 21, and The stoppers 23, 23 are brought into pressure contact with each other to make the stopper unit 4 immovable due to the frictional force, so that concrete can be poured in a stable state. Further, according to the embodiments shown in FIGS. 10 and 11, by moving the elastic member 36 so that the tip of the flexible hose 3'constituting the casting pipe is directed obliquely upward, the ready-mixed concrete is moved further. It is possible to scatter up to the maximum and expand the range of placement.

When the elastic member 17 has a cylinder structure, it may be extended instead of being shortened. Further, the stoppers 23, 23 are not limited to rubber tubes, and may be metal members whose lower surface is made of rubber. Further, the configurations of other parts are not limited to those of the illustrated embodiment.

[0023]

[Effect of the device]

 As described above, according to the present invention, hoses that support concrete placing hoses on slab reinforcement are connected to each other so that they can be bent and swung in a horizontal plane and slidable on slab reinforcement. The hose support unit row is held in the hose holding portion of the support unit, and the hose support unit row is bent and swung in a desired direction by selectively extending and contracting the expansion and contraction member connected between the left and right side portions of these hose support units. Therefore, the tip of the concrete placing hose can be swiftly directed to any desired location, and the work efficiency of concrete placing work can be greatly improved. Also, since each hose is supported by the hose support unit that is grounded on the slab reinforcement, the weight is distributed to each hose support unit so that the load is not concentrated and the reinforcement is not damaged. Furthermore, since the weight of each hose support unit is small, the work involved in installing, removing, and transporting the hose is much easier than in the prior art, and the construction period can be shortened. In addition, it is possible to adapt to the size of the construction site by simply changing the number of connected hose support units, which makes it versatile. Since the hose connecting the hose support units is a flexible hose, it can flexibly follow the bending and turning, does not have resistance during the bending and turning, and achieves a smooth operation. On the other hand, if a stopper unit is connected to the head of the row of hose support units, it is possible to place concrete by placing the stopper unit in an immovable state by the stopper when placing concrete, and it is possible to prevent the placing pipe from moving blindly. You can surely pour concrete.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a concrete placing device according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a plan view of the hose support unit in FIG.

FIG. 4 is a side view of the same.

FIG. 5 is a front view of the same.

FIG. 6 is a plan view of the stopper unit in FIG.

FIG. 7 is a side view of the same.

FIG. 8 is a front view of the same.

9 is an enlarged cross-sectional view of the stopper and its supporting portion of FIG.

FIG. 10 is a plan view showing a modified example of the driving pipe according to the present invention.

FIG. 11 is a side view of the same.

FIG. 12 is a front view showing an example of the elastic member in FIGS. 1 and 10.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hose support unit 2 Flexible hose 3 Placing pipe 4 Stopper unit 5 Sledding member 7 Hose holding part 12 Holding member 15 Coil spring as elastic body 17 Elastic member 21 Sledding member 22 Placing pipe holding part 23 Stopper 36 Expansion member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Minoru Ochiai 2-1-21 Ginza, Chuo-ku, Tokyo Tokyo Stock Office Takenaka Corporation Tokyo Main Store (72) Creator Kenshi Okuda Ginza-hachi, Chuo-ku, Tokyo No. 21-1 Takenaka Corporation Tokyo Main Store (72) Inventor Kazuo Yamazaki 1293 Amadocho, Chiba, Chiba Sanwa Equipment Co., Ltd. Chiba Factory

Claims (3)

[Scope of utility model registration request] 1. A plurality of hose support units movable on a floor surface on which concrete is to be placed, a flexible hose connecting these hose support units, and a remote unit connected between right and left portions of each hose support unit. A concrete pouring device comprising: an elastic member that can be expanded and contracted by an operation, and by selectively expanding and contracting the elastic member, the hose support unit is swung in an arbitrary direction within a horizontal plane. . 2. The hose support unit includes a sled member capable of sliding on a floor surface on which concrete is to be placed, and a hose holding portion elastically supported by the sled member by an elastic body such as a spring. The concrete placing device according to claim 1, which has. 3. A sled member capable of sliding on a floor surface on which concrete is to be cast, a casting pipe holding portion provided on the sled member, and a sled member provided so as to be retractable below a lower end of the sled member. 2. The concrete pouring device according to claim 1, further comprising a stopper unit made of a member having a frictional force larger than that of the lower surface, the stopper unit being connected to the head of the plurality of hose support unit rows.