JP2001317035A - Grout mixer pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light grout mixer pump capable of being easily conveyed and e.g. easily carrying out grouting work by bringing it on a scaffold set on a slope. SOLUTION: The grout mixer pump 1 is constituted of a stereoscopic frame 2, a grout mixer 3 fixed to the inside of the stereoscopic frame 2, at the same time, forming a grout outlet 17 on the bottom section side, a cylindrical grout induction pipe 4 connected to the grout outlet 17, a check valve 18 provided to a joint section between the grout outlet 17 and grout induction pipe 4 and a conveying cylinder 5 vertically connected to the rear of the grout induction pipe 4 and reciprocating a piston 5A to the inside of the grount induction pipe 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mixer pump for kneading a grout material such as cement slurry or mortar and for feeding the same, and more particularly to a lightweight and excellent portability, for example, rock bolting for a slope or the like. The present invention relates to a grout mixer pump suitable for sequentially injecting a small amount of grout material while moving it at appropriate times during installation work or the like.

[0002]

2. Description of the Related Art Conventionally, as a construction method for reinforcing a natural ground or a cut slope, as shown in FIG. 7, a steel bar member 50 such as a reinforcing bar or a rock bolt is inserted into the ground and grouted around the ground. There is known a ground reinforcement method for reducing the earth pressure, stabilizing the slope, and increasing the supporting force by injecting a material 51 and integrating the material with the ground.

In the ground reinforcement method, when the grout material 51 is injected, as shown in FIG.
A grout mixer 52 and a grout pump 53 connected to the grout mixer via a relay hose 54 are used to supply the gas to the injection site by a supply hose 55.

[0004]

Since the grout mixer 52 and the grout pump 53 are of a so-called stationary type, if they are installed in a flat place under a slope, they will not be moved thereafter, and the supply hose 55 will not be moved. It was transported from near field to far injection point by length correspondence.

However, since grout injection into the rock bolts and the like is performed on a slope, the grout pump 53 must have a pumping capacity that allows for high-altitude and long-distance transportation. Although a small amount of grout was originally injected at a low pressure, there was a waste of equipment in spite of being sufficient.

Further, as the transport distance and the working time become longer, the inside of the hose becomes more likely to be clogged, and once the hose becomes clogged, the work must be temporarily interrupted. Occurs. Furthermore, workers must always be arranged at the location where the grout mixer is installed, which is wasteful for personnel.

[0007] The main object of the present invention is to reduce the weight and size of the apparatus, thereby making it possible to easily carry out grouting work by, for example, bringing the apparatus into a scaffold placed on a slope to eliminate waste in terms of equipment and to reduce the number of personnel. Reduce,
Another object of the present invention is to provide a grout mixer pump which can easily prevent blockage in the hose.

[0008]

According to the present invention, there is provided a three-dimensional frame, a grout mixer fixed in the three-dimensional frame and having a grout outlet formed on a bottom side, and a grout mixer. A cylindrical grout suction pipe connected to the outflow port, a check valve disposed at a communicating portion between the grout outflow port and the grout suction pipe, and a tandemly connected to a back portion of the grout suction pipe. And a pressure feeding cylinder in which the piston reciprocates inside the grout suction pipe.

In this case, a check valve is provided at the discharge port of the grout suction pipe so as to allow flow in the direction of pressure feed, and air and / or hose for grout pressure feed is provided at the outlet side of the check valve. It is desirable to form a supply port for prevention air. At this time, it is desirable to dispose a position detection sensor for detecting the piston position in the pressure feeding cylinder, and to supply grout pressure feeding air intermittently during the time of pressure feeding by the piston pushing of the pressure feeding cylinder. It is desirable that the air for preventing hose blockage can be supplied at any time by a manual cock operation. Further, it is desirable to use a pneumatic actuator as a drive source of the grout mixer and the pressure feeding cylinder in terms of simplification of the structure and weight reduction.

In the present invention, a grout mixer is fixed with a three-dimensional frame as a support, and a grout suction pipe is directly connected to the grout mixer via a check valve, and a piston is provided at a rear portion of the grout suction pipe with a grout suction pipe. It has a structure in which a pressure feeding cylinder that reciprocates inside the pipe is provided. That is, since the grout mixer and the grout pump including the grout suction pipe and the pressure feeding cylinder are integrally incorporated in the three-dimensional frame, the weight can be reduced, and the portable device can be easily carried.
Specifically, regarding the point of weight reduction, a check valve is provided in a communication part between the grout outlet of the grout mixer and the grout suction pipe, and the grout pump is constituted by a single cylinder structure, so that suction during grout suction is performed. Since the resistance can be reduced and the work is carried to a scaffold on the slope, the grout material can be sufficiently pumped even with a small-capacity and lightweight pumping cylinder. At the same time, since the grouting operation can be performed by the grouting worker, the number of workers can be reduced and the work efficiency can be improved.

In order to cope with the case where the pumping distance becomes long, a check valve which allows a flow in the pumping direction is provided at a discharge port of the grout suction pipe, and grout pumping is performed at an outlet portion of the check valve. Since the air supply port is formed so as to supply the air for intermittent grouting, the weight of the grout pump can be reduced and the capacity of the grout pump can be reduced. Furthermore, this air supply structure can also be used as a supply port for air for preventing hose blockage, and after the grout injection operation is completed, compressed air can be sent by a cock operation to remove the grout material in the hose.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of a grout mixer pump 1 according to the present invention, FIG. 2 is a plan view, FIG. 3 is a front view, and FIG. 4 is a vertical sectional view of a grout mixer.

The grout mixer pump 1 comprises a three-dimensional frame 2 constituted by pipes, a grout mixer 3 supported in the three-dimensional frame 2, and a grout directly attached to a side of the grout mixer 3. It is mainly composed of a suction pipe 4 and a pressure-feeding cylinder 5 cascaded on the back of the grout suction pipe 4,
The grout mixer and grout pump are integrated, and the structure is simplified to reduce the weight so that the grout mixer can be carried and used anywhere.

In detail, the three-dimensional frame 2 is preferably made of a member having a small section and high rigidity such as a pipe in order to reduce the weight.
Each of the pipe ends processed in the shape of a letter is connected to the main pipe frame 2A, which is extended rearward as it is to form a leg, and then bent upward, and the main pipe frame 2A is horizontally oriented at an upper position. A three-dimensional frame body is constituted by the U-shaped upper frame 2B and an appropriate number of connecting pipes 2a.
２2 g in a structure connected in the horizontal direction. In addition, the three-dimensional frame 2 may have any structure other than the above-described structure as long as it is framed so as to have a predetermined rigidity by using an appropriate cross-sectional shape member.

The grout mixer 3 uses the two connecting pipes 2b, 2d laid on the upper frame 2B as support members, and the grout mixer 3 uses the fixtures such as U-shaped clamps 10, 10,. Fixed.

The grout mixer 3 has a structure in which a stirring blade 12 rotatably supported by a vertical rotating shaft 13 is provided in a tank 11.
Is rotatably supported by a bearing 14 provided on the lower surface of the tank, and a lower end of the shaft is motively connected to an air motor 16 via a speed reducer 15. The driving source of the grout mixer 3 is the air motor 1
In addition to the use of an electric or hydraulic pressure, it is possible to simplify and reduce the weight of the auxiliary equipment, and also to use a drive source for a mixer pump 4 described later, a supply source for compressed air and air for preventing blockage, and a compressor. To enable this, it is preferable to use an air-driven one. The air supplied to the air motor 16 and the below-described pressure feeding cylinder 5 is supplied to a pneumatic pressure adjusting unit 7 including a pneumatic filter, a pneumatic pressure reducing valve, a pneumatic lubricator, and the like provided on the side of the grout mixer 3. Is supplied via the Internet.

On the bottom side surface of the grout mixer 3,
A grout outlet 17 is formed, and the grout inlet 17 is connected to the grout outlet 17. As shown in detail in FIG. 5, the grout suction pipe 4 comprises a T-shaped pipe section 4A in which a check valve 18 is provided and a straight pipe section 4B connected thereto. On the back side of the pipe section 4B, a piston 5A is provided with a grout suction pipe 4.
(Straight pipe section 4B) The pressure feeding cylinders 5 reciprocating inside the inside are connected in tandem.

The check valve 18 has a structure in which a valve seat 19 is provided on the outer surface side of the grout outlet 17 and a ball valve 21 which resiliently contacts the valve seat 19 by a spring 20. Things. When the piston 5A of the pressure feeding cylinder 5 is retracted, the grout material kneaded from the grout mixer 3 through the check valve 18 flows into the grout suction pipe 4 when the piston 5A moves forward. The grout material in the grout suction pipe 4 is pushed out and pressure-fed. As described above, an air cylinder is used as the pressure feeding cylinder 5 for simplifying the structure and reducing the weight, and the reciprocating operation is switched by the piston 5.
Limit switch 2 for detecting the position of A from a change in magnetism
2, 23 are disposed, the forward and backward movements of the piston 5A are detected, and the flow of the operating air is switched by an electromagnetic valve. These electric control circuits and solenoid valves are connected to a control panel 6 provided on the side of the grout mixer 3.
It is arranged in. In addition, as a position detection sensor, a proximity switch that detects a change in impedance,
A photoelectric switch that detects a change in light, a cylinder switch that detects a change in magnetism, and the like can be used.

The grout pressure feed port of the T-shaped pipe portion 4A has a second check valve 2 for allowing the flow of grout in the pressure feed direction.
4 is connected to an air supply T-tube 25 provided therein. An air supply connector 26 is connected to one opening 25a of the T-tube 25 for air supply, and a hose connector 27 is connected to the other opening 25b. The air supply connector 26 includes a first air inlet 26a and a second air inlet 26a.
b, the first air inflow portion 26a supplies grout pressure feeding air, and the second air inflow portion 26b
Are adapted to supply air for preventing blockage. That is, the first air inflow portion 26a intermittently supplies the air for pumping by the limit switches 22 and 23 for detecting the piston operation position during the pumping timing to enhance the pumping ability of the grout material. And the other second air inflow portion 26b is connected to the manual cock 2
Air can be supplied at any time by opening / closing operation 9 and used to discharge the grout material remaining in the hose when the grouting operation is completed.

By the way, the piston reciprocating operation of the pressure feeding cylinder 5 and the intermittent supply of the pressure feeding air are electrically controlled by detecting the position of the piston by the limit switches 22 and 23. May be performed manually. As a result, the power supply can be made unnecessary and the weight can be further reduced.

[0021]

As described above in detail, according to the present invention, the grouting operation can be easily carried out by bringing it on a scaffold installed on a slope, for example, due to its light weight and compactness. As a result, waste in terms of equipment is eliminated, and the number of personnel can be reduced. In addition, blockage in the hose can be easily prevented.

[Brief description of the drawings]

FIG. 1 is a side view of a grout mixer pump 1 according to the present invention.

FIG. 2 is a plan view thereof.

FIG. 3 is a front view thereof.

4 is a longitudinal sectional view of the grout mixer 3. FIG.

FIG. 5 is an enlarged sectional view of a main part showing a connection part between the grout mixer 3 and the grout suction pipe 4.

FIG. 6 is a longitudinal sectional view of a grout pump.

FIG. 7 is a schematic view showing a conventional grout pumping equipment.

[Explanation of symbols]

1. Mixer pump for grout 2. Solid frame 3,
... grout mixer, 4 ... grout suction pipe, 5 ... cylinder for pressure feeding, 6 ... control panel, 7 ... air pressure adjusting unit, 17
... grout outlet, 18 ... check valve, 24 ... second check valve,
26 ... air supply connector, 26a ... first air inflow section, 26
b: second air inflow section, 29: cock

Claims (5)

[Claims] 1. A three-dimensional frame, a grout mixer fixed in the three-dimensional frame and having a grout outlet formed on a bottom side, a cylindrical grout suction pipe connected to the grout outlet, and A check valve disposed at a communicating portion between the grout outlet and the grout suction pipe, and a pressure-feeding cylinder, which is serially connected to a back portion of the grout suction pipe and has a piston reciprocating inside the grout suction pipe; , A grout mixer pump. 2. A grout suction pipe is provided with a check valve at a discharge port of the grout suction pipe to allow flow in the pressure feeding direction, and a grout pressure feeding air and / or hose blocking prevention is provided at an outlet side of the check valve. The grout mixer pump according to claim 1, wherein an air supply port is formed. 3. A grout pumping air is intermittently supplied to the pumping cylinder by providing a position detecting sensor for detecting a piston position and aiming at a timing of pumping by pushing the piston of the pumping cylinder. A grout mixer pump according to claim 2. 4. The grout mixer pump according to claim 2, wherein the air for preventing hose blockage can be supplied at any time by a manual cock operation. 5. A grout mixer pump according to claim 1, wherein a pneumatic actuator is used as a drive source of said grout mixer and said pressure feeding cylinder.