JPH09235895A - Washing, peeling, crushing device for concrete surface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crushing device for a concrete surface generating no dust by storing nozzles injecting pressure water in a cover movable against an object face and opened on one face, and connecting one end of a suction pipe to the cover. SOLUTION: A swivel joint 2 fitted with nozzles 1 rotated and rocked while injecting pressure water is stored in a cover 3 opened on one face in a nozzle section A. One end of a suction pipe 5 conveying inside crushed pieces to the outside is connected to a part of the cover 3, and the other end is connected to a suction pump. The whole nozzle section A is fitted to a frame accurately and freely movable in parallel with an object face horizontally, vertically, and in all directions. Pressure water is injected toward the periphery of coarse aggregate from all directions, and the coarse aggregate is blown off. In case of washing or peeling, the injection pressure of the pressure water is reduced, or the type of the nozzles 1 is selected. The safe and clean work can be conducted without scattering the coarse aggregate and peeled pieces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus capable of cleaning, peeling and crushing concrete surfaces.

[0002]

2. Description of the Related Art As a method for cleaning, peeling and crushing the surface of a concrete structure, a method in which a worker wearing a protective mask operates a hand gun equipped with a nozzle for injecting ultrahigh pressure water is one of the methods. It has been adopted by the department.
And this kind of conventional concrete surface cleaning, peeling,
And the crushing method is used for the following purposes. When removing fragile parts on the concrete surface and then repairing with cement filler or mortar. When peeling a surface decorative material such as a coating film that has deteriorated over time. When cleaning structures where unsightly due to contamination by contaminants. When the deteriorated part of the structure due to carbonation of the structure is stripped, and in some cases the rebar is exposed, and then concrete is newly placed to restore the function. When shaving one end of an existing concrete structure to form irregularities, such as widening of a highway, and placing new concrete with good adhesion.

[0003]

The conventional method as described above has the following problems. <B> Since this is a method in which the work is performed in a state where the mist of the ultra-high pressure water is filled, the visibility is unclear and the state of the surface of the concrete cannot be accurately grasped.

<B> In the operation method of the hand gun, the sliding surface tends to be random, and in order to completely pick up a defect such as a fragile portion, it is necessary to interrupt the work repeatedly and check the progress of the lifting of the target surface. I have to.

<C> The worker must hold the handgun while enduring the reaction force of the jet of high-pressure water, and work on it while paying attention to his feet wet with water. Are forced to work under various conditions.

<D> When the mortar portion of the concrete is removed by the ultra-high pressure water, the coarse aggregate suddenly pops out. For this reason, the coarse aggregate is constantly flying around the worker at a high speed, which is extremely dangerous work. Although protective masks are used to prevent danger, it is expected that such coarse aggregate may damage the protective mask under certain conditions.

<E> Especially when crushing the wall surface or the ceiling portion of the concrete structure, it is necessary to hold the handgun sideways and upward, which is more dangerous and demanding. In reality, upward work is often too dangerous and impossible.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and enables safe and efficient cleaning, peeling and crushing, and does not deteriorate the working environment of concrete. An object is to provide a surface cleaning, peeling and crushing device. A further object of the present invention is to provide a concrete surface cleaning, peeling, and crushing device capable of easily obtaining a desired depth and a desired work area.

[0009]

In order to achieve the above-mentioned object, the concrete surface of the present invention is cleaned, peeled,
The crushing device is provided with a nozzle for injecting pressurized water, and the nozzle is housed in a cover that is open on one side in a stationary, rotating, oscillating, or movable state. Is characterized by a concrete surface cleaning, peeling, and crushing device in which a nozzle part having one end opened is movable with respect to the crushing surface.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a concrete surface cleaning, peeling and crushing apparatus of the present invention will be described below with reference to the drawings. First, the structure of a nozzle portion A will be described.

<A> Constituent Member of Nozzle Section The nozzle section A of the apparatus of the present invention is composed of the nozzle 1, the swivel joint 2, and the surrounding cover 3.
The swivel joint 2 is a member required to rotate the nozzle. It should be noted that the nozzle 1 uses a fan-like or straight-line water jet, and is stationary, rotating, oscillating, or moving.

<B> Medium used for crushing In the device of the present invention, the medium for crushing the concrete structure is mainly "water". In some cases, a polymer agent may be added for the purpose of making water viscous and reducing the attenuation of kinetic energy having a water jet flow, but other materials such as abrasives may be added. It is economical because it does not exist.

<C> Nozzle The nozzle 1 for jetting water is generally of a screw type, and is fixed by being screwed into the nozzle base. It is also possible to attach a plurality of nozzles to a plate-shaped nozzle substrate and electrically swing the plate-shaped substrate. A single nozzle or a plurality of nozzles are used. In the case of an even number of nozzles, if they are arranged symmetrically with respect to the axis of the rotation center axis of the swivel joint 2, it is good to carry out rotation in the case of rotational movement with good balance. For a more balanced approach,
Dummy nozzles or counterweights can also be used. As a result, blurring can be prevented. In case of an odd number of books, arrange them in a well-balanced radial pattern,
Alternatively, one nozzle may be arranged on the axis of rotation, or a symmetrical arrangement may be included for balancing. It is also possible to install dummy nozzles and counterweights for adjustment.

<D> Stationary, Rotation, Oscillation, and Movement of Nozzle The nozzle 1 is given stationary, rotation, oscillation, or movement. When giving a rotary motion, the nozzle 1 is attached to the swivel joint 2 to connect the rotary body and the water channel. When a plurality of nozzles 1 are provided, they are arranged at target positions around the axis of the rotation center axis of the swivel joint 2. When the number of the nozzles 1 is one, a counterweight is often provided at a target position around the axis. By arranging a plurality of nozzles 1, or a single nozzle 1 and a counterweight at a target position around the axis, the energy of water injected at high pressure can be balanced. As a result, blurring can be prevented.

<E> Stationary, Rotation, Oscillation, and Movement of Nozzle The nozzle 1 is given stationary, rotation, oscillation, or movement. Nozzle stationary When stationary, screw nozzle 1 into the nozzle base to secure it,
The movement with respect to the ejection surface is performed by moving the gantry as shown in FIGS. Alternatively, it freely moves along a fixed type endless circuit guide rail incorporated in the cover.

Rotation of Nozzle When a rotary motion is given, the nozzle 1 is attached to the swivel joint 2 as shown in FIG. 2 to connect the rotating body and the water channel. It is also possible to combine such as rotating the electric rocking nozzle. The cleaning and peeling may be performed by directly jetting water over the entire surface of the target surface, and the jetting energy is not required to be so large. Therefore, both the rotation speed and the moving speed may be relatively large. In the case of crushing, on the contrary, a large injection energy is required, so it is better that the rotation speed and the moving speed are relatively slow. As for the arrangement of the nozzles 1, it is preferable to arrange the nozzles 1 symmetrically about the axis, and it is preferable to use a dummy nozzle or a counterweight to balance the energy of water injected at high pressure and the weight.

Oscillation of Nozzles Oscillation of nozzles is performed by, for example, fixing a plurality of nozzles 1 to the base of a plate-like nozzle by screwing or the like, fitting the nozzle base to a shaft, and attaching it electrically to the plate-like nozzle base. Gives vibration of a certain width and period. It is effective for lysine-based surface decorative materials that have low adhesive strength during cleaning and peeling, and when concrete has a high degree of brittleness.

Movement of Nozzle It is possible to freely move on the rail by moving circularly by the water channel processed as shown in FIG. 8 or by providing a fixed endless circuit guide rail in the cover. It can also be combined with rotational movement.

<F> Angle of Nozzle 1 The nozzle 1 for injecting pressurized water is arranged so as to have a constant angle with respect to the rotation axis. Then, the pressure water collides with the crushing surface not obliquely but obliquely. On the other hand, there is always coarse aggregate inside the concrete to be crushed. If the pressure water always collides from a certain direction, the pressure water does not reach the back side of the coarse aggregate and collides only with the front side of the coarse aggregate. However, as described above, if the nozzle 1 is attached at a constant angle, the concrete on the side surface and the back side of the coarse aggregate can be crushed as the injection position of the nozzle 1 changes. As a result, the coarse aggregate can be exposed or floated up to remove the surrounding mortar portion holding the coarse aggregate, and can be crushed and removed from inside the concrete. Here, the angle of the nozzle 1 does not necessarily have to be constant. There is a method of combining arbitrary angles. It is advisable to change a part of the nozzle angles to obtain a more appropriate cutting state when, for example, it is necessary to observe the cutting work state at a constant angle and make the excavation energy received by the cutting surface uniform.

<G> Cover The swivel joint 2 and the nozzle 1 described above are housed in the cover 3 to form the nozzle portion A. The cover 3 of the nozzle portion A is a container whose one surface is open, and the work is performed by bringing the open surface into contact with the concrete surface to be worked. The skirt 4 is doubly attached to the periphery of the cover 3 with a highly flexible material such as rubber. That is, the inner skirt 41 is attached to the inner side of the cover 3, and the outer skirt 42 is attached to the outer side. The inner skirt 41 is continuously attached to the entire inner circumference,
The outer skirt 42 is divided into a number of strips and attached. Since the outer skirt 42 is largely deformed when the cover 3 moves, if it is divided into strips, it is possible to adapt to the movement. Furthermore, the inner skirt 41 is the outer skirt 4
The mobility is better when the length is shorter than 2 and the surface is in contact with a target surface such as concrete. However, the skirt is not indispensable, and when it is done manually, it is necessary to perform the work lightly, so a type that holds the skirt by hand without using it can also be adopted.
If the skirt is omitted, the cover may be made of a highly flexible material such as plastic or rubber, or may be cut.

<H> Suction Mechanism One end of the suction pipe 5 is opened in a part of the cover 3.
The other end of this suction pipe 5 is connected to a vacuum pump. Therefore, when the vacuum pump is operated, a negative pressure acts on the inside of the cover 3 so that the used water and the crushed pieces inside the cover 3 can be sucked and transported to the outside. Moreover, since the outer skirt 42 of the skirt 4 around the cover 3 is divided into strips, an appropriate amount of outside air flows into the cover 3, and even if a negative pressure is applied, the fragments are sucked from the inside together with the outside air. be able to.

<R> Example 1 of Stand (FIG. 3) The entire nozzle portion A having the above-described structure is attached to the stand B. As the mount B, for example, a flat mount B as shown in FIG. 3 is used. A horizontal rail 51 is attached to the front surface of the frame B in the horizontal direction. A vertical carriage 52 is movably mounted on the rail 51. The vertical carriage 52 can move in parallel along the horizontal rail 51 while maintaining the vertical state. The horizontal carriage 53 is further placed on the rail outside the vertical carriage 52. A rail shorter than the horizontal rail 51 is installed on the front surface of the horizontal carriage 53, and the nozzle portion A described above is mounted on this short rail. The above trolleys are moved by a combination of ball screws, racks, chains, etc. and gears. Therefore, the nozzle part A reciprocates on the horizontal carriage 53, the horizontal carriage 53 reciprocates on the vertical carriage 52, and the vertical carriage 52 can move along the horizontal rail 51 from the end of the gantry B to the end. As a result, the nozzle portion A on the horizontal carriage 53 can be moved in parallel to the target surface and accurately and freely in horizontal, vertical and all directions.

The pedestal B itself can be attached to a known moving device C (FIG. 4). A known hydraulic excavator is used as the moving device C, and the pedestal B is attached to the tip of the boom 71. Then, the gantry B can be sequentially moved to continuously crush the concrete surface. In some cases, wheels are attached to the gantry B itself so that they can be moved on the track. By arranging the tracks, not only the lateral movement but also the pedestal B can be arranged upward and downward to perform the crushing work.

<N> Example 2 of mount (FIG. 5) As mount B, mount B with wheels is used. This stand B
The nozzle part A is placed on the uppermost part of. Between the nozzle portion A and the gantry B, a tilt table 61 in the X direction and a tilt table 6 in the Y direction are provided.
2 and intervene. Then, each of the tilting bases 61 and 62 enables delicate angle adjustment by rotating the handle. Further, the nozzle section A can be configured to be movable in the vertical direction by interposing a telescopic column 63 by a jack on the support of the pedestal B. With such a configuration, for example, when the lower surface of the viaduct is a beam, even when the horizontal target surface under the slab is changed to a vertical target surface (beam) immediately, the tilt table is moved in the X direction or the Y direction. It is possible to perform continuous work without interrupting the work or changing the setup of the device by arbitrarily changing it. Further, even if the target surface is a curved surface or a bent surface, the tilting table can create the best injection posture. In addition, a workable position corresponding to a target surface having a step in the horizontal direction or the vertical direction can be arbitrarily created by a telescopic column such as a jack. Even in the case of working inside a tunnel, it is possible to arbitrarily cope with the above functions and improve working efficiency.

<L> Example 3 of mount (FIG. 7) It is also possible to adopt a structure in which the mount B is assembled by directly attaching the mount B to the lower surface of the slab of the viaduct C, and the nozzle portion A is moved along the mount. This is a method in which a rail is attached to the lower surface of the viaduct slab, and the nozzle portion moves on a rail or the like that is attached so as to be movable in the direction in which the rail intersects. The rails in the intersecting direction can be optionally stretched to completely cover the lower surface of the viaduct slab.

<Wo> Example 4 of the mount (FIG. 6) It is also possible to adopt a structure in which the mount B is assembled on the side surface of the pillar D and the nozzle portion A is moved along the mount. Posts are provided on one surface or a plurality of surfaces, rails and the like are provided so as to cross the posts so that the posts can travel, and the nozzle portion travels on the rails. The target surface is not limited to a flat surface, and the crossed rails or the like can be curved or bent according to the target surface.

[0027]

[Operation] Next, the operation will be described. <A> Pressing the cover 3 The open surface of the cover 3 of the nozzle portion A placed on the pedestal B is pressed against the surface of the concrete to be worked. Then, the vacuum pump for suction is operated to set the inside of the cover 3 to a negative pressure state via the suction pipe 5.

<B> Jet from the nozzle 1 Next, pressure water is jetted from the nozzle 1. As described above, the nozzle 1 is not arranged at right angles to the concrete surface, but is arranged at a constant angle. Therefore, the pressure water from the tip collides with the concrete surface with a constant incident angle. By injecting the pressurized water toward the periphery of the coarse aggregate from all angles, the mortar around the coarse aggregate is blown off and the coarse aggregate is exposed. As a result, instead of cutting the coarse aggregate itself, the coarse aggregate can be blown away to crush the surface of the concrete. The crushed concrete pieces are sucked toward the vacuum pump by the negative pressure in the cover 3 and are sequentially removed.

Further, in the case of cleaning or peeling, depending on the degree of contamination and the adhesive strength of the surface decorative material, the jetting pressure of the pressure water is made smaller than the crushing, and the type of nozzle (the direct jet nozzle tends to increase the pressure, Select a weak fan shape). Also, the swing type etc. is selected depending on the situation.

Also, by examining the presence or absence of a skirt, adjusting the length, adjusting the bending strength, adjusting the cut length of the strip, adjusting the density of the strip, etc., the optimum selection according to the work is made and the work environment is selected. Keep good. In this case, the suction pressure is also adjusted. As a result of the above work, cleaning of the surface layer of concrete or the like, peeling and crushing of concrete, and rust removal of reinforcing bars and plates can be performed with high quality and high efficiency at the same time.

[0031]

The effect of the present invention for cleaning, peeling and crushing concrete, asphalt, steel and the like has the following effects. <A> The device of the present invention is a device in which the nozzle portion is mounted on a frame so as to be movable parallel to the surface of concrete or the like. Therefore, unlike the conventional technique in which visual confirmation is difficult and depends on the sense of the operator, it is possible to maintain an accurate distance from the target surface. Also, since it is possible to perform cleaning, peeling, and crushing work by applying a medium to the target surface with a certain kinetic energy, the concrete in the damaged fragile part should be deep and the undamaged part should be crushed shallowly without any special adjustment. You can In addition, this device can select working equipment according to the property of the object.

<B> One end of the suction pipe 5 is opened in a part of the cover to operate the vacuum pump. Therefore, a negative pressure acts on the inside of the cover, and used water, contaminated water, fog, peeling decorative material, concrete crushed pieces, etc. inside the cover can be sucked and transported to the outside. Therefore, unlike the work using a handgun, there is no occurrence of a phenomenon that pollutes the surrounding environment or deteriorates the visibility due to the scattering of fog or crushed substances. In this way, the concrete surface can be washed, peeled and crushed under a favorable environment.

<C> Since the crushed concrete pieces are sucked and collected from the suction port of the cover 3, they are not scattered in the site. You can perform safe, clean washing, peeling, and crushing work without creating a dangerous work environment with your feet clean.

<D> Since the gantry is used and the injection is performed from the tip of the pedestal, the worker is not put in a dangerous and bad working environment even in the crushing work in the upward direction, the lateral direction, or at a high place, and the efficiency is high. Washing, peeling and crushing operations can be performed. In the conventional method, the upward work is particularly harsh because the posture is bad, and there is a danger that the crushed pieces may fall, and in reality, the upward work is almost impossible.

<E> Since the work can be performed in any posture, the object is not limited to a horizontal or vertical structure. For example, it can be applied to any structure such as an inside of a tunnel, a lower surface of a viaduct, a lower surface of a spectator seat in a stadium, or a structure with many bends.

<F> This is a method of spraying pressurized water onto the concrete surface without mixing an abrasive to clean, peel and crush. Therefore, a special and expensive ultra-high pressure pump such as a device for cutting concrete is not necessarily required, and cleaning, peeling and crushing can be performed at low cost.

<G> When an operator holds the nozzle part of this device to perform work, the operator can be protected from the danger of flying coarse aggregate during crushing, and it can be visually confirmed without fog. Is easy to do. In addition, it can be released from the badness of the feet caused by the flowing water. When working on scaffolding, the risk of slipping was life-threatening for the workers.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a nozzle portion of an apparatus according to the present invention.

FIG. 2 is an explanatory diagram of a nozzle portion during work.

FIG. 3 is an explanatory diagram of a crushing device in which a nozzle unit is mounted on a frame.

FIG. 4 is an explanatory view of another crushing device in which the nozzle portion is mounted on the frame.

FIG. 5 is an explanatory view of another crushing device in which the nozzle part is mounted on the frame.

FIG. 6 is an explanatory view of another crushing device in which the nozzle portion is mounted on the frame.

FIG. 7 is an explanatory view of another crushing device in which the nozzle portion is mounted on the frame.

FIG. 8 is an explanatory diagram of an example of another nozzle unit.

Claims (6)

[Claims] 1. A nozzle for injecting pressurized water is provided, the nozzle is housed in a cover that is open on one side in a stationary, rotating, swinging, or movable state, and suction is provided in a part of this cover. A concrete surface cleaning, peeling, and crushing device in which the nozzle part configured by opening one end of the pipe is configured to be movable with respect to the target surface. 2. A nozzle for injecting pressurized water is provided, and the nozzle is housed in a cover that is open on one side in a stationary, rotating, swinging, or movable state, and suction is provided in a part of this cover. A concrete surface cleaning, peeling, and crushing device in which a nozzle part configured by opening one end of a pipe is mounted on a gantry that is movable in parallel and horizontally to the target surface and in the horizontal and vertical directions. 3. A nozzle for injecting pressurized water is provided, and the nozzle is housed in a cover that is open on one side in a stationary, rotating, swinging, or movable state, and a suction is provided in a part of this cover. A concrete surface cleaning, peeling, and crushing device in which a nozzle part configured by opening one end of the pipe is mounted on a pedestal that can be tilted with respect to the target surface. 4. A nozzle for injecting pressurized water is provided, and the nozzle is housed in a cover that is open on one side in a stationary, rotating, oscillating, or movable state, and a suction is provided in a part of this cover. A concrete surface cleaning, peeling, and crushing device in which a nozzle part configured by opening one end of a pipe is mounted on a pedestal that can be tilted with respect to the target surface, and this pedestal is mounted on a pedestal that is movable in a horizontal plane. 5. A nozzle for injecting pressurized water is provided, and the nozzle is housed in a cover that is open on one side in a state of being stationary, rotating, swinging, or movable, and suction is provided in a part of this cover. A concrete surface nozzle, which is constructed by opening one end of a pipe, is mounted on a pedestal that can be tilted with respect to the target surface, and this pedestal is mounted on a pedestal that can be moved horizontally and vertically. Surface cleaning, peeling and crushing equipment 6. The nozzle housed in a cover that is open on one side in a stationary, rotating, swinging, or movable state is arranged so as to have an angle other than perpendicular to the target surface. To cleaning, peeling of the concrete surface,
Crushing equipment