KR101664366B1

KR101664366B1 - concrete cleaning apparatus for concrete pumping car and preparing method for the same

Info

Publication number: KR101664366B1
Application number: KR1020160013678A
Authority: KR
Inventors: 김원식
Original assignee: (주)케이씨이피중공업
Priority date: 2016-02-03
Filing date: 2016-02-03
Publication date: 2016-10-24

Abstract

Disclosed is a concrete recovery apparatus and method for recovering residual amount of concrete remaining in a boom or a hose after work of a concrete pump car. The concrete recovering apparatus according to the present invention comprises: a hopper provided with concrete; A pump for conveying the concrete of the hopper to a curing point; A pressure feeding pipe for guiding concrete pumped by the pump; A return pipe branched from the pressure feeding pipe adjacent to the hopper; A feed pipe open / close valve installed to open and close the feed pipe at a position separated from the hopper with respect to the return pipe; And an opening / closing means provided between the feed pipe and the return pipe.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete pumping car,

The present invention relates to an apparatus and a method for recovering concrete remaining in a remaining boom or hose of a concrete pump car after operation.

Generally, reinforced concrete is widely used in the construction of buildings and structures. In other words, a construction method is widely practiced in which concrete is poured and cured after making molds and reinforcing bars. Most buildings are being built in this way.

When the reinforcing bars are laid, concrete is poured together with water into the form 1, and cured. At this time, a so-called concrete pump car 10 is used as shown in Fig.

The concrete pump car 10 is a device for conveying concrete using a boom 12 at a long distance. As shown in Fig. 1, the concrete pump car 10 is continuously supplied with concrete from the so-called ready-made vehicle 20 to the hopper 11.

The concrete supplied to the hopper 11 is conveyed through a conveyance pipe connected to the hopper 11. At this time, the pressure-feeding pipe is connected to a hydraulic pump, and hydraulic pressure is applied to concrete, and the pressure-feeding pipe is conveyed to a far distance through the pressure-feeding pipe. The feed pipe extends from the hopper 11 to the first boom 12 and its end is connected to the end hose 13 by the boom 12 again.

Therefore, concrete is supplied to the hopper 11 from concrete, and the concrete is conveyed to the end hose 13 along the pressure transmission pipe supported by the boom 12 and the pressure of the hydraulic pump, .

At this time, when the concrete supply and pouring are completed, the remaining amount of concrete remains in the conveyance pipe. When the concrete is cured, the conveyance pipe must be replaced. Therefore, it is necessary to clean the inside of the conveyance pipe after the work.

2, after the sponge ball 2 is inserted into the end hose 13, the pumping direction is reversed by a reverse pumping function, which is a function of the pump car 10. That is, the hydraulic pump sucks in the work. Therefore, the sponge ball 2 inserted into the end hose 13 pushes the concrete remaining in the inside of the pressure-feeding pipe to be cleaned, and the remaining amount of the sponge ball 2 is recovered to the hopper 11.

The concrete recovered by the hopper 11 is discharged to the gate of the lower end of the hopper 11 to be discarded.

However, although the amount of concrete to be discarded differs depending on the type of concrete, the conventional concrete pump recovery system and method of the concrete pump car are wasted with 0.5 to 1 m 3, resulting in economic loss, which causes environmental pollution problem.

In addition, currently, the construction site is seriously responding to the treatment of residual concrete and prohibits unauthorized disposal.

Another prior art is a technique in which water is further supplied to the hopper without collecting the residual concrete by the hopper, and the water is recovered into the remicon vehicle together with the water.

However, this conventional technique also has a problem that a large amount of water is wasted because the amount of water required in proportion to the length of the boom increases proportionally.

In addition, there is a problem that the capacity of the water tank mounted on the pump car must be increased. This increases the weight of the pump car, thereby reducing fuel consumption.

Patent No. 0591599

SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus and a method for recovering concrete of a concrete pump car which is capable of recovering residual concrete to a remicon vehicle by using a small amount of water.

As a concrete means for achieving the above object, the present invention provides a method of manufacturing a concrete structure, comprising: a hopper provided with concrete; A pump for conveying the concrete of the hopper to a curing point; A pressure feeding pipe for guiding concrete pumped by the pump; A return pipe branched from the pressure feeding pipe adjacent to the hopper; A feed pipe open / close valve installed to open and close the feed pipe at a position separated from the hopper with respect to the return pipe; And an opening / closing means provided between the feed pipe and the return pipe.

Preferably, the pressure feeding pipe is guided to a curing point by a plurality of booms.

Preferably, the pump is a bidirectional pump capable of sucking and discharging.

Preferably, the opening / closing means is a cap for closing the return pipe.

According to another aspect of the present invention for achieving the above object, A pump for providing a pressurizing pressure to pressurize the concrete of the hopper to a curing point; A pressure feeding pipe for guiding concrete pumped by the pump; A return pipe branched from the pressure feeding pipe adjacent to the hopper; And a three-way valve installed at a branch point between the pressure-feeding pipe and the return pipe for switching the direction of the pressed concrete.

Preferably, the three-way valve includes a ball valve installed at the branch point for switching the direction.

According to another aspect of the present invention, there is provided a method of manufacturing a concrete pump, comprising the steps of: inserting a cleaning ball into an end hose of a concrete pump car; Conveying the concrete conveying pump to the hopper by operating the concrete hose and the concrete remaining in the conveyance pipe in the opposite direction by operating the pump in the opposite direction to apply vacuum pressure to the cleaning ball; Providing a return pipe branched from the press-feeding pipe at a position adjacent to the hopper, closing the return pipe and opening the return pipe so that residual concrete of the hopper can be fed by the return pipe; Mixing a small amount of water into the remaining concrete of the hopper, operating the pump, and feeding the water by the return pipe.

Preferably, a three-way valve is provided at a branch point between the feed pipe and the return pipe.

The present invention as described above has the following effects.

(1) According to the present invention, since the collection pipe is connected to the ready-mixed vehicle and the remaining concrete is collected, contamination of the area can be prevented.

(2) According to the present invention, since a small amount of water is put into the hopper and the remaining concrete is returned to the raycone vehicle, the water tank of the concrete pump car can be designed to be small.

1 is a view showing a state in which a concrete pump car according to the prior art operates.
2 is a perspective view showing a state in which cleaning is performed using a cleaning ball after a concrete pump car operation according to the related art.
3 is a front view of a concrete pump-car concrete recovering apparatus according to the present invention.
FIG. 4 is a view showing the state in which the recovery operation is proceeded as shown in FIG.
5 is a partial cross-sectional view of a concrete recovery device of a concrete pump car according to another embodiment of the present invention.
6 is an enlarged view of a portion A shown in Fig.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, where a section such as a layer, a film, an area, a plate, or the like is referred to as being "on" another section, it includes not only the case where it is "directly on" another part but also the case where there is another part in between. On the contrary, where a section such as a layer, a film, an area, a plate, etc. is referred to as being "under" another section, this includes not only the case where the section is "directly underneath"

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a concrete recovery apparatus for a concrete pump car according to an embodiment of the present invention will be described in detail with reference to the drawings.

The concrete pumping apparatus of the concrete pump car 10 according to the first embodiment of the present invention is provided with a hopper 11, a hydraulic pump 30, a pressure feeding pipes 31, 32 and 33, a collecting pipe 50, And a stopper (not shown).

The concrete pump car 10 has all the components of a conventional pump car.

The hopper 11 is supplied with concrete from the remicon vehicle 20. The ready-mixed vehicle 20 is a vehicle that reciprocates between a work site and a concrete factory while mixing and stirring to prevent concrete from hardening. Therefore, it is necessary to always stir the concrete materials during conveyance so that they do not harden. The ready-mixed vehicle 20 arrives at the site and then supplies the concrete to the hopper 11. [

Since the hopper 11 is conveyed by the hydraulic pump 30 immediately after the concrete is supplied, the volume is not large.

3 and 4, the hydraulic pump 30 includes a hydraulic cylinder 30a, a concrete cylinder 30b, and a piston-in-ram 30c. The concrete of the hopper 11 is connected to the curing point And performs the function of pushing and feeding. That is, the concrete installed at the lower part of the hopper 11 is immediately pressurized and continuously conveyed to the conveyance pipes 31, 32, 33.

Here, the hydraulic pump 30 which is most advantageous from the viewpoint of power and design is used, but it is also possible to apply a pump which operates as a new drive source according to need.

The hydraulic pump 30 is a pump that can operate not only in one direction but also in the opposite direction. That is, the hydraulic pump 30 has a reverse pumping function. The concrete of the hopper 11 may be pressure fed in the direction of the feed pipes 31, 32 and 33 and may be conveyed by reverse pumping and fed from the feed pipes 31, 32 and 33 to the hopper 11, It can also absorb concrete.

The pressure-feeding pipes 31, 32, 33 are concrete conveyance pipes for guiding the concrete pumped by the pump 30. [ The press-feeding pipe extends from the upper surface of the concrete pump car 20 to the end hose while being supported by a plurality of booms. Therefore, when the hydraulic pump 30 operates, the concrete of the hopper 11 is fed to the mold through the press-feeding pipes 31, 32, and 33 by the pressure.

Conversely, when the hydraulic pump 30 performs reverse pumping, the concrete of the end hose and the pressure feeding pipes 31, 32, 33 is sucked into the hopper 11.

The return pipe (50) is branched from the feed pipe (31, 32, 33) adjacent to the hopper (11). 3 and 4, a T-shaped pipe 33 having branch passages is provided in the vicinity of the hopper 11 in the pressure feeding pipes 31, 32, 33, ). &Lt; / RTI > The pipe in the horizontal direction forms a part of the feeding pipe, and the pipe branched in the vertical direction is connected to the return pipe (50). Therefore, when the return pipe 50 is opened, the concrete of the hopper 11 flows through the feed pipes 31, 32, and 33 while a part of the concrete flows into the return pipe 50 It flows. Therefore, in the case of a normal operation, it is necessary to prevent the concrete from flowing to the return pipe (50). In order to prevent this, a stopper is provided and used as opening / closing means of the return pipe (50). Needless to say, a valve can be used in addition to the stopper.

The open / close valve 40 is installed to open / close the feed pipes 31, 32, 33 at a position separated from the hopper 11 rather than the return pipe 50. That is, the opening / closing valve 40 is installed in the T-shaped pipe 33 to open / close the flow of the pressure feeding pipes 31, 32 and 33. The open / close valve 40 is normally opened to allow the concrete to be conveyed from the hopper 11 to the concrete hose, and when the remaining concrete is collected, the open / close valve 40 is closed and is fed from the hopper 11 So that the remaining concrete is extruded only by the return pipe (50).

1 The recovery method using the concrete pump car concrete recovery apparatus according to the present invention constructed as above will be described.

When concrete is supplied from the ready-mixed vehicle 20 to the hopper 11, the concrete supplied by the operation of the hydraulic pump 30 passes through the pressure-feeding pipes 31, 32, 33 and reaches the end hose, . When concrete pouring is completed, the remaining concrete of the feed pipes 31, 32, 33 and the end hose must be recovered.

The recovery method inserts a cleaning ball into the end hose of the concrete pump car (10). The cleaning ball is a so-called sponge ball and is applied because it has a very high elasticity and a very good cleaning friction. In other words, the sponge balls corresponding to the largest diameters in the above-mentioned feed pipes (31, 32, 33) and the end hose are inserted into the end hose as the cleaning balls.

Next, the hydraulic pump 30 is operated by reverse pumping so that a vacuum pressure acts on the cleaning balls, and the remaining concrete in the end hose and the pressure feeding pipes 31, 32, 33 is transferred to the hopper 11 . In other words, when the hydraulic pump 30 is operated, vacuum pressure is generated in the press-feeding pipes 31, 32, and 33, and the cleaning balls are absorbed and conveyed toward the hopper 11 by the vacuum pressure. At this time, remaining concrete adhering to the wall of the pressure feeding pipes (31, 32, 33) is conveyed to the hopper (11) by the cleaning ball.

The return pipe 50 is opened and the pressure feeding pipes 31, 32 and 33 are closed so that the residual concrete of the hopper 11 can be pressed and fed by the return pipe 50. The open / close valve 40 is operated as shown in FIG. 4, and the return pipe 50 is opened and prepared in a state where the pressure feeding pipes 31, 32, 33 are closed. At this time, the end of the return pipe (50) is connected to the remicon vehicle (20).

A small amount of water is mixed with the remaining concrete of the hopper 11 and the hydraulic pump 30 is operated by reverse pumping to be fed by the return pipe 50 so that the remaining concrete is collected into the ready-mixed vehicle 20.

According to this recovery method, the remaining concrete is not disposed of in the place but the remicon vehicle is recovered again, thereby preventing environmental destruction and meeting various statutory standards.

In addition, since the feed pipe and the like are not cleaned with water, a small amount of water is supplied to the hopper.

On the other hand, referring to FIG. 6, there is shown a partial cross-sectional view of a recovery apparatus according to another embodiment of the present invention. The other components are the same and different from the previous embodiment in the construction in which the configurations of the pressure feeding pipes 131 and 132, the return pipe 150 and the opening and closing valve 140 are improved by applying a three-way valve.

As shown in FIGS. 5 and 6, a three-way valve 140 is installed at a branch point between the pressure feeding pipes 131 and 132 and the return pipe 150 to change the direction of concrete conveyed.

6, the residual concrete pumped from the hopper side pressure feeding pipes 131 and 132 is closed by the guide of the ball valve 160 installed in the upper valve 140, and therefore, the movement to the pressure feeding pipes 131 and 132 is continued And is only fed to the recovery pipe 150 without being fed.

When the ball valve 160 is rotated clockwise by 90 degrees, the return pipe 150 is closed and the pressure-feeding pipes 131 and 132 are connected to each other. Therefore, the concrete of the hopper is pushed to the end hose .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: Form 2: Cleaning Ball
10: Concrete pump car 11: Hopper
12: Boom 13: And the hose
20: Remicon vehicle 30: Hydraulic pump
30a: Hydraulic cylinder 30b: Concrete cylinder
30c: Ram 31, 32, 33, 131, 132:
40: opening / closing valve 50, 150: return pipe
140: Three-way valve 160: Ball valve

Claims

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A hopper provided with concrete;
A pump for providing a pressurizing pressure to pressurize the concrete of the hopper to a curing point;
A pressure feeding pipe for guiding concrete pumped by the pump;
A return pipe branched from the pressure feeding pipe adjacent to the hopper;
A three-way valve installed at a branch point between the pressure-feeding pipe and the return pipe for switching a direction of concrete conveyed by pressure;
Lt; / RTI >
Wherein the three-way valve includes a ball valve installed at the bifurcation to switch the direction,
Wherein the return pipe is vertically branched to the pressure feeding pipe and the ball valve is provided at a branch point of the return pipe, and a hole corresponding to the pressure feeding pipe and the return pipe is provided in the ball valve, Wherein the flow of the concrete pumping car is determined by the flow of the concrete pump.

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Inserting a cleaning ball into the end hose of the concrete pump car;
Conveying the concrete conveying pump to the hopper by operating the concrete hose and the concrete remaining in the conveyance pipe in the opposite direction so as to apply vacuum pressure to the cleaning ball;
Providing a return pipe branched from the press-feeding pipe at a position adjacent to the hopper, closing the return pipe and opening the return pipe so that residual concrete of the hopper can be fed by the return pipe;
Mixing a predetermined amount of water with remaining concrete of the hopper, operating the pump, and feeding the water by the return pipe;
Lt; / RTI >
Wherein a three-way valve is provided at a branch point between the pressure feeding pipe and the return pipe, the return pipe is vertically branched to the pressure feeding pipe, a ball valve is provided at a branch point of the return pipe, Wherein the flow of the concrete is determined as the ball valve is rotated.

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