JPH0629362Y2 - Concrete pouring equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an improvement of a concrete placing device for placing concrete in a steel pipe column by a pumping method.

[Conventional technology]

In recent high-rise buildings, examples of using steel pipe columns (box columns) are gradually increasing, and concrete is placed in the steel pipes to increase the strength of the steel pipe columns.

And, in the past, a pump pressure method of laying a pipe for pumping concrete on the rebar and placing the concrete in a steel pipe pillar was used, but recently, a dry floor is pre-finished on each floor in advance, A method of laying pipes on a floor having a concrete inlet and placing concrete in steel pipe columns is widely used.

FIG. 13 shows a plan view of a dry floor on which piping is laid, in which reference numeral 1 is a dry floor, 3 is a steel pipe column,
The steel pipe pillar 3 is arranged so as to penetrate the dry floor 1.

A pipe 7 in which a plurality of straight pipes 5 are connected is laid on the dry floor 1, and the pipe 7 is driven by a pressure feed pump.
Concrete is pumped inside. A flexible hose 9 is attached to the tip thereof, and as shown in FIG. 14, the flexible hose 9 is inserted into the concrete inlet 11 of the steel pipe column 3 and concrete 13 is placed in the steel pipe column 3. It is supposed to do.
In addition, the dry floor 1 is prevented from being damaged by the pulsation of the pipe 7 due to the pressure-feeding pressure of the concrete 13.
Are supported by lumber 15 and the like arranged on the dry floor 1.

Thus, in order to place the concrete 13 in the steel pipe pillar 3, first, the steel pipe pillar 3 within the reach of the flexible hose 9 is reached.
After placing the concrete 13 in the inside, the pipe 7 is rearranged, that is, the straight pipe 5 on the tip side is removed so that the flexible hose 9 reaches the steel pipe column 3 to be placed next, and the flexible hose 9 is attached to the pipe 7. Reattach. Then, concrete 13 is placed again in the steel pipe pillar 3 within the reach of the flexible hose 9. Repeating such work,
Concrete 13 is placed on the steel pipe pillar 3 that is to be placed.

In addition, due to the layout of the steel pipe columns 3 and the pipe 7, an L-shaped pipe 17 may be connected in the pipe 7 as shown in FIG.
In such a case, the straight pipe 5 and the L-shaped pipe 17 are planarly connected via the rotatable connecting member 19.

As shown in FIG. 16, the connecting member 19 is mounted inside the casting 21 and the casting metal 21 having a substantially U-shaped cross section, which is bridged between the flanges 5a and 17a of the straight pipe 5 and the L-shaped pipe 17. And a shielding rubber 23 having a substantially C-shaped cross section.
When the concrete 13 is pumped, the straight pipe 5 and L
The shielding rubber 2 is generated by the pressure-feeding pressure discharged from the gap of the character tube 17.
3 is the inner wall of the hardware 21, the flanges 5a and 17a, and the hardware 2
It is designed to be in close contact with the contact portion with 1 to ensure the hermeticity of the connecting portion between the straight pipe 5 and the L-shaped pipe 17. Other, thirteenth
15 to 15, reference numeral 24 is a connecting member for connecting and fixing the straight pipe 5 and the flexible hose 9.

[Problems to be solved by the device]

However, in the concrete placing device described above, the straight pipe 5 and the L-shaped pipe 17 need to be relocated easily, and the amount of work is large, which is a painful work. Of course, since the amount of one steel pipe column 3 to be placed is small, the amount to be placed in one refill is small, and the concrete 13 that is clogged in the straight pipe 5 or the L-shaped pipe 17 due to the refill. (So-called “remaining concrete”) is increased and the material is wasted.

In addition, since the pipe 7 is laid flat, even if the pressure feed pump is stopped after finishing the placement at one place, the movement of the pipe 7 when the flexible hose 9 moves causes the pipe 7 to move.
There was also a problem that the remaining concrete inside was pushed out to the tip one by one, and eventually the remaining concrete drips on the dry floor 1.

The present invention has been devised in view of such an actual situation, and is a pumping and pressure-feeding method capable of placing concrete in a steel pipe column without waste, efficiently and at low cost, and preventing dripping of residual concrete. An object of the present invention is to provide a concrete pouring device.

[Means for Solving the Problems]

In order to achieve such an object, the concrete placing device in the pumping method according to the present invention uses a straight pipe through a connecting pipe composed of two L-shaped pipes connected by a rotatable connecting member. Connected and fixed, laying concrete pumping pipe with height difference on the dry floor, connecting and fixing a flexible hose inserted into the concrete input port formed in the steel pipe pillar at the tip of the pipe, and The connecting and fixing part and the end of the pipe to which the flexible hose is connected are supported and fixed by a pipe pedestal equipped with casters movable on the dry floor.

[Action]

According to the present invention, when pouring concrete at the pouring place, the pipe is laid on the dry floor via the movable caster provided on the pipe receiving base, and the flexible hose attached to the tip is driven. Just move to the location. At this time, the pipe is rotatable around the connecting member of the connecting pipe and is still supported by the pipe pedestal equipped with casters movable on the dry floor. Corresponds to small movements when moving.

Thus, since the pipe is movable on the floor with the connecting member of each connecting pipe as the center of rotation, when the flexible hose is moved to another driving position, the pipe corresponds to the movement of the flexible hose. Then, the flexible hose may be moved to another placement location and the same placement work may be performed. Then, repeat the same procedure to move the flexible hoses to all the placement points and perform placement,
As described above, the pipe corresponds to the movement of the flexible hose.

Further, even if the pressure feed pump is stopped and the flexible hose is moved to another placement location, there is a difference in height between the pipes, so that the connecting pipe serves as a kind of trap to prevent the residual condensate from dripping.

〔Example〕

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The same elements as those of the conventional example are indicated by the same reference numerals.

FIG. 1 is a side view of a main part of a concrete placing apparatus according to this embodiment. In the figure, reference numeral 25 is a connection consisting of two L-shaped pipes 17 connected by a rotatable connection member 19. In a tube
Plural straight pipes 5 are connected via the connecting pipe 25 to form a pipe 27 having a height difference on the dry floor 1. A flexible hose 9 that is inserted into a concrete inlet 11 formed in the steel pipe column 3 is connected to the straight pipe 5 located at the tip of the pipe 27. As shown in FIG. The concrete 13 can be placed in the steel pipe pillar 3 by inserting it into the concrete inlet 11 of the steel pipe pillar 3.

The pipes 27 having different heights are supported by pipe stands 29 and 31 having different heights which can travel on the dry floor 1. As shown in FIG. By being supported by 31, the straight pipe 5 to which the flexible hose 9 is attached can move on the dry floor 1 in the directions of arrows A and B around the connecting member 19 of the connecting pipe 25 as a rotation center, and is also sandwiched by the connecting pipe 25. The straight pipe 5 can be moved on the dry floor 1 in the directions of arrows C and D with one connecting member 19 as the center of rotation.

3 to 5 show a pipe fixing portion of a pipe receiving base 29 having a short height for supporting a low portion of the pipe 27. In the drawings, reference numeral 33 is a receiving metal fitting, and 35 is an arrow E on the receiving metal fitting 33. ，
It is a fixing bracket that is pinned so as to be rotatable in the F direction.

The receiving metal fitting 33 includes two plates 39 and 41 each having a semicircular cutout 37 formed in an upper portion thereof, an arc-shaped support plate 43 attached to the cutout 37, and a space between the plates 39 and 41. Is composed of a tightening bolt 45 pivotally mounted in the directions of arrows G and H. Further, as shown in FIG. 4, a plate 49 having a U-shaped notch 47 formed on the upper part of the tightening bolt 45 is attached between the plates 39 and 41, and the tightening bolt rotating in the direction of arrow H is shown. The movement of 45 is restricted by the notch 47.

On the other hand, the fixing metal fitting 35, as shown in FIG.
Width n slightly larger than the width m between the plates 39 and 41 of No. 3
Is formed by C-shaped plates 50 and 51 that are arranged in parallel with each other, and an arc-shaped support plate 55 that is attached between the cutouts 53 at the lower portion of the plates 50 and 51, and the receiving pin 33 is attached by the attachment pin 56. Is rotatably connected to. Further, as shown in FIG. 7, a plate 59 having a U-shaped cutout 57 formed at one end of both plates 50, 51.
By rotating the fixing bracket 35 in the direction of arrow E to engage the tightening bolt 45 with the notch 57, and by screwing a well-known fixing bolt 61 as shown in FIG. The fixing metal fitting 35 is fixed to the receiving metal fitting 33. Therefore, for example, the receiving fitting 3
The straight pipe 5 is placed on the support plate 43 of No. 3, and the fixing bracket 35
Is moved in the direction of arrow E, and the fastening bolt 45 is engaged with the notch 57, and then the fastening bolt 61 is screwed into the fastening bolt 45. It will be held at 35. Other, third
In the figure, reference numeral 63 is a rubber plate attached to the support plates 43 and 55, 65 is a reinforcing piece of the plates 49 and 51, and a fourth plate.
In the figure, reference numeral 67 is a pin insertion portion formed between the plates 39 and 41.

The pipe fixing portion of the pipe pedestal 29 has the above-described configuration, and as shown in FIG. 3 or 5, the pipe fixing portion is welded to the square pipe 69.

As shown in FIG. 9 or FIG. 10, the pipe pedestal 29 has two square pipes 69 having the pipe fixing portions arranged side by side with a predetermined gap between them. Then, the square pipes 73 provided with the caster mounting members 71 near both ends are juxtaposed, and both end portions of the square pipes 69 and 73 are connected by the plate 75.
A well-known caster 77 is attached.

In addition, the other pipe receiving stand 31 that supports the pipe 27 at a high position
Is a pair of legs 79 extending in a V shape as shown in FIG.
Is attached to the pipe pedestal 29 to make it taller than the pipe pedestal 29. The same elements as those of the pipe pedestal 29 are designated by the same reference numerals, and their structural description will be omitted.

In FIG. 11, reference numeral 81 denotes the plate 39 of the receiving fitting 33,
41 is a fixed square pipe, and even in this pipe pedestal 31 as shown in FIG. 12, two square pipes 81 to which a pipe fixing portion having the same structure as the pipe pedestal 29 is attached have a predetermined interval. Plates 83 having an L-shaped cross section are attached to both ends of the both-sides pipe 81, which are opened and juxtaposed. Then, the legs 79 connecting to the square pipes 75 are attached to the lower surface of each plate 83. Besides, in FIG. 12, reference numeral 85 is a reinforcing piece of the leg 79.

Thus, in this embodiment, as shown in FIG. 1, the pipes 29 and 31 are used to lay the pipes 27 having a height difference on the dry floor 1. Then, the pipe pedestals 29 and 31 are attached by placing the pipe pedestals 29 and 31 at the connecting portion between the straight pipe 5 and the L-shaped pipe 17 (connection pipe 25) as shown in FIG. 9 or FIG. , The straight pipe 5 and the L-shaped pipe 17 on both sides of the connecting member 24, and the fitting 33 and the fixing fitting 35.
The structure is fixed by. Further, as shown in FIG. 1, at the tip of the straight pipe 5 to which the flexible hose 9 is connected,
The pipe support 29 is attached.

Since the present embodiment is configured in this way, in order to place the concrete 13 on the steel pipe pillar 3, the above-mentioned pipe pedestal 29,
The pipe 27 may be laid on the dry floor 1 by using 31, and the flexible hose 9 attached to the tip thereof may be moved to the steel pipe column 3. At this time, the pipe 27 is rotatable around the connecting member 19 of the connecting pipe 25 as a rotation center,
Of course, the pipe pedestal 29 with the casters 77 attached,
Since it is supported by 31, the pipe support 27 corresponds to the fine movement when the flexible hose 9 is moved.

Then, as shown in FIG. 1, after inserting the flexible hose 9 from the concrete inlet 11 to the lower portion of the steel pipe column 3, the pressure pump is driven to pump the concrete 13 into the pipe 27, so that the concrete pipe 13 is driven into the steel pipe column 3. The setting is started. Then, as the concrete surface rises, the flexible hose 9 is gradually pulled up, and when the pouring of the predetermined amount of concrete 13 is completed, the pressure feed of the concrete 13 is temporarily stopped and the flexible hose 9 may be removed from the steel pipe column 3.

Then, as described above, the pipe 27 is movable on the dry floor 1 with the connecting member 19 of each connecting pipe 25 as the center of rotation, so that the flexible hose 9 pulled up as described above is moved to another steel pipe column 3. In this case, the pipe 27 moves in the direction of the arrow as shown in FIG. 2 and corresponds to the movement of the flexible hose 9. And flexible hose 9
To another steel pipe column 3 and move the flexible hose 9
The above may be inserted into the concrete inlet 11 and the same pouring work may be performed. Then, after the driving is completed, the flexible hose 9 may be moved to all the steel pipe columns 3 by repeating the same procedure, and the pipe 27 moves in the arrow direction as shown in FIG. Will correspond to.

Further, even if the pressure feed pump is stopped and the flexible hose 9 is moved to another steel pipe column 3, since the pipe 27 has a height difference, the connecting pipe 25 serves as a kind of trap to prevent the dripping of the residual concrete. .

Thus, according to this embodiment, the flexible hose 9
It is no longer necessary to remove the flexible hose 9 from the pipe 27 and refill the pipe 27 when pulling up the pipe from the steel pipe column 3 and moving it to another steel pipe column 3.
Therefore, unlike the prior art, residual concrete does not remain in the pipe 27, and since the structure is simple and the flexible hose 9 can be easily moved, it is possible to efficiently place dispersed concrete pouring. However, since the connecting pipe 25 functions as a kind of trap as described above, when the flexible hose 9 is moved, the residual liquid remains in the pipe 27 as in the conventional case.
It is no longer pushed out and drips from its tip.

In addition, the pipe pedestal of the present embodiment can be of two types and the device is easy to standardize, and the conventional straight pipe 5, L-shaped pipe 17, and connecting members 19 and 24 can be used as they are, and standardization is aimed at. This has the advantage that the cost burden at the site can be reduced.

[Effect of device]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, a straight pipe is connected and fixed through a connecting pipe composed of two L-shaped pipes connected by a rotatable connecting member, and it is for concrete pressure-feeding with a height difference on a dry floor. While laying the pipe, at the tip of the pipe, the flexible hose to be inserted into the concrete injection port formed in the steel pipe pillar is connected and fixed, and the connecting and fixing part of each pipe and the end of the pipe to which the flexible hose is connected are fixed. Since the flexible hose is supported and fixed on the dry floor by a pipe pedestal equipped with a movable caster, when the flexible hose is pulled up from the steel pipe column and moved to another steel pipe column, the flexible hose is It is no longer necessary to remove and re-arrange the piping.

Therefore, according to the present invention, residual concrete does not remain in the pipe, and the structure is simple and the flexible hose can be easily moved, so that it is possible to efficiently place dispersed concrete pouring. . However, since the connecting pipe that forms the height difference between the pipes functions as a kind of trap, the residual concrete is not pushed out of the pipe and drips when the flexible hose is moved.

In addition, the pipe pedestal of the present invention has two types, and the device is easy to standardize, and the conventional pipe member can be used as it is, so that there is an advantage that the cost burden on the site is small.

[Brief description of drawings]

FIG. 1 is a side view of a main portion of a concrete placing device according to an embodiment of the present invention. FIG. 2 is a plan view of an essential part of the above embodiment. FIG. 3 is a front view of a main portion of a pipe fixing portion in the pipe pedestal. FIG. 4 is a plan view of the receiving fitting. FIG. 5 is a side view of the receiving fitting. FIG. 6 is a side view of the fixing fitting. FIG. 7 is a partial plan view of the fixing fitting. FIG. 8 is a side view of the fixing bolt. FIG. 9 is a side view of the pipe pedestal. FIG. 10 is a sectional view taken along line XX of FIG. FIG. 11 is a front view of the pipe pedestal. FIG. 12 is a side view of the pipe pedestal. FIG. 13 and FIG. 15 are plan views of essential parts of a conventional concrete placing device. FIG. 14 is a side view of the main parts of the concrete pouring device shown in FIG. FIG. 16 is a central sectional view of the connecting member. [Explanation of symbols of main parts] 1 ... Dry floor 3 ... Steel pipe column 5 ... Straight pipe 17 ... L-shaped pipe 19,24 ... Connecting member 25 ... Connecting pipe 27 ... Piping 29,31 ... … Piping pedestal 33 …… Receptive fitting 35 …… Fixing fitting 43,55 …… Support plate 77 …… Caster 79 …… Leg

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kazuya Nishimura Inventor Kazuya Nishimura 8-21-1 Ginza, Chuo-ku, Tokyo Stock company Takenaka Corporation Tokyo Main Store (72) Inventor Hiroaki Ota 8-21 Ginza, Chuo-ku, Tokyo No. 1 Stock Company Takenaka Corporation Tokyo Main Store (56) References Japanese Patent Laid-Open No. 64-1863 (JP, A)

Claims (1)

[Scope of utility model registration request] 1. A straight pipe is connected and fixed through a connecting pipe composed of two L-shaped pipes connected by a rotatable connecting member, and a concrete pressure-feeding pipe having a height difference is laid on a dry floor. , The flexible hose inserted into the concrete inlet formed in the steel pipe pillar is connected and fixed to the tip of the pipe, and the connecting and fixing portion of each pipe and the tip of the pipe to which the flexible hose is connected are fixed on the dry floor. A concrete pouring device that can be placed in a pumping method, characterized in that it is supported and fixed by a pipe pedestal equipped with movable casters.