JPH01262976A - Device for removing rust developed or concrete, etc., attached to inner wall of steel pipe placed in lying state - Google Patents

Abstract

PURPOSE:To make it possible to easily and efficiently remove rust developed on the inner wall of steel pipe, etc., by providing a percussion generating mechanism to remove matters to be removed by causing percussion, a power mechanism to rotate said mechanism, a travelling and attitude control mechanism of whole device, and a brushing mechanism. CONSTITUTION:Upper and lower rotary discs 3 are connected through a plurality of ring rotation axes 5 disposed along the outer periphery of the discs, spaced properly from each other, where percussion rings 2 having percussion protrusions 1 on their outer peripheries are mounted rotatably on the axes 5 and the discs 3 are mounted on a rotary disc rotation shaft 4, and further wire brushes 9 are replaceably attached to the shaft 4, between the discs 3, to form a percussion generating mechanism. This mechanism is rotated by a motor 6 to cause the ring 2 to eccentrically rotate by centrifugal force on the axis 5 so that the ring partially runs out of the outer periphery of the disc 3 to strike matters to be removed 7 on the inner wall of steel pipe. In a casing 8, a travelling device 16 and an attitude control device 17 for the whole device are provided, wherein the center of gravity of the device is positioned under the center line of the percussion generating mechanism.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Purpose of the Invention (a) Field of Industrial Application The present invention relates to a peeling device for peeling off rust, etc. that has occurred or adhered to a pipe such as a lying steel pipe.

(b) Regarding conventional technology, the rust adhering to the inner wall surface of steel pipes, etc., or the paint applied to these, or adhering concrete, etc., is peeled off and used.
Preparing for the next construction project is something that is done on a daily basis. However, these rusts and the like were removed by manual hammering or jet chisel work by workers. However, with these techniques, the contact area of the hammer or chisel is small and extremely inefficient, and it is difficult to remove steel pipes of a diameter that makes it impossible for humans to enter and perform stripping work, such as steel pipes used for civil engineering work. Rust and the like generated on the inner wall surface cannot be peeled off and removed.

(c) In view of the problems that the present invention aims to solve, the applicant has previously published Japanese Patent Application No. 62-23900 on a method for removing rust and adhering concrete from the inner wall of an erected steel pipe, etc. However, in this application, we are particularly concerned with rust that has occurred on the inner wall surface of the steel pipe (11) installed on the side, a thin layer of concrete that has adhered during construction, many small lumps, or painted paint. It is an object of the present invention to provide an apparatus that can remove manual labor and strip very easily and efficiently not only large-diameter steel pipes but also steel pipes with diameters that are difficult to strip by humans.

(B) Regarding the structure of the invention Although the present invention was invented with the above objectives,
It is composed of a striking mechanism for striking and stripping the object to be peeled off, a power mechanism for rotating the mechanism, a traveling mechanism for the entire device, a posture control mechanism, a brushing mechanism, a tip mechanism, and the like. Next, each mechanism will be explained in detail.

(B) About the impact generating mechanism Figure 1 is a partially cutaway perspective explanatory view showing the usage state of the device which is an embodiment of the device of the present invention and removes deposits such as rust (7) generated on the inner wall surface of a steel pipe, etc. However, the pair of ring rotation bases (3) at the front and rear can be freely attached and detached with a plurality of ring rotation shafts (5) at appropriate intervals near the outer periphery of the bases (3). A striking ring (2) having a gear-shaped striking protrusion (1) formed on its outer circumferential surface is attached to the ring rotating shaft (5) between the front and rear ring rotating bases (3). 3), and a ring rotating base (
3) is fixed, and the rotating base rotating shaft (4) is connected to the transmission device (22
) is configured to rotate in conjunction with the motor (6).

In addition, this impact generating mechanism may have a multi-stage configuration of the ring rotation base (3), and in this embodiment, it has a two-stage configuration.

Next, the striking ring (2) among the constituent parts is formed with a striking protrusion (1) on its periphery, and in the embodiment shown in the drawings, it is formed in the shape of a gear.

However, the striking protrusion (1) may be formed by forming the striking ring (2) into a polygonal shape and using the corner as the striking protrusion (1), or the striking protrusion (1) may be formed in a column shape on the outer peripheral surface of the ring. may be formed. Next, the size of the striking ring (2) is determined by eccentric rotation due to centrifugal force when the striking generating mechanism is rotated.
) is so large that it does not come into contact with the rotary base rotating shaft (4) when a part of the ring protrudes outside the periphery of the ring rotating base (3) and hits the object to be peeled off (7) and is reversed due to the reaction. Therefore, depending on the condition of the inner wall surface of the steel pipe or the diameter of the pipe, the type and diameter of the impact ring (2) may be changed and replaced, or the size (diameter size) of the ring rotating base (3) may be changed. Alternatively, the impact generating mechanism may be configured.

(B) About the brushing mechanism and cleaning mechanism (A) About the brushing mechanism This mechanism is installed on the one-rotation base rotation shaft (4) and at the front or rearmost part of the ring rotation base (3) (between the ring rotation base and the main body). Between the cases, the mounting is configured to be replaceable. Of course, it may be provided in both the front and the rear.

That is, the present embodiment (Fig. 1) (Fig. 2) (Fig. 3) is installed on the brush mounting board (24) that rotates coaxially with the rotating base rotation shaft (4).
A wire brush (9) is attached to the wire brush (9), and its length is such that when the impact generating mechanism rotates, the wire brush (9)
Hit the inner wall of the tube (11) with the tip of the
It is long enough to sweep away. The material does not necessarily have to be the wire brush (9) made of steel wire, as long as it has the function and effect.

Note that this brushing mechanism may be configured to be used in conjunction with a cleaning mechanism when the motor (6) is a fluid motor (6).

(B) About the cleaning mechanism The cleaning mechanism is a device for striking and peeling off the object to be peeled off (7) and at the same time washing away the peeled object and the inner wall of the pipe after it has been peeled off.The power source of this device is pressurized fluid, and the motor ( 6) is a more effective mechanism when the fluid motor (6) is used. Of course, it is possible to use electric power as the power source, but this is disadvantageous mechanically and economically.

Figure 2 shows the first embodiment of this mechanism, in which a rotary swivel (25) is attached to the rear of the rotating base rotating shaft (4) inside the main body case (8), and pressurized fluid is supplied to the rotating base rotating shaft from the fluid hose (26). (4) and its spout (10
) from between the ring rotating base (3)! (11) is provided facing the inner wall. (27) is the ejection pipe, (2
8) is a nozzle, and the nozzle (28) is attached to the ejection pipe (27) so that the ejection direction of the pressure fluid can be changed. (26') is a fluid hose for the motor. In the case of this embodiment, it may be provided on the wafer as shown by the dotted line for brushing.

Next, Figure 3 shows the pressure fluid jet pipe (27) and its jet port (
10) is provided at the tip of the rotating base rotating shaft (4), and the rotary swivel (25) is attached to the main body case (8).
It is placed inside the rotating base and on the rotating shaft (4).

In this embodiment as well, the fluid hose (26) is connected to the motor (6).
Although it is installed separately from the fluid hose (26') for the motor (6), it is also technically possible to use the pressure fluid for the motor (6).

(30) is a fluid inlet into the rotating base rotating shaft (4);
(31) is an inlet to the ejection pipe (27).

Furthermore, FIG. 4 shows a third embodiment in which the fluid jet port (10) is opened in the ring rotating base (3) at the tip position, and in both the second and third embodiments, the nozzle (28) is Like the first embodiment, it is rotatable so that the direction of fluid ejection can be changed.

Note that it is also possible to configure the ejection ports for the other fluids mentioned above to protrude outside the main body case (8).

Although the cleaning mechanism of the present invention has the above configuration, the pressure fluid ejected from the ejection pipe (27) is used as a power source for the fluid motor (6) in the first to third embodiments. Of course, a configuration using pressure fluid may also be used.

(c) Regarding the power mechanism, the rotation of the impact generating mechanism is performed by the motor (6).
A power mechanism is configured such that the rotating shaft of the motor (6) and the rotating base rotating shaft (4) are rotated in conjunction with each other by a transmission device such as a belt or a gear (22).

Also, the motor (6) has its rotating shaft (23) connected to the main body case (
8) is provided in the main body case (8) downward and parallel to the vertical center line (18), that is, the rotary base rotation axis (4).

That is, the feature is that the center of gravity of the entire device is located below.

It is also possible to configure the rotating shaft (23) of the motor (6) and the rotating base rotating shaft (4) on the same axis, but in that case, a weight must be configured to lower the center of gravity of the device. Bye.

Next, the power source for the motor is from outside the main body case (8).
If the motor (6) is an electric motor, use the electric cable (
13), if the motor (6) is a fluid motor, it is connected to the motor (6) as a fluid hose (26') or a so-called power supply pipe.

Note that the gas used as the power source for the fluid motor may be water, air, oil, gas, or the like.

(d) Traveling mechanism Since the device of the present invention is used for cleaning the inner wall of a horizontally oriented steel pipe (11), it is essential to have a means for traveling inside the pipe (11). In the present embodiment shown in the drawings, the front part of the main body case (8) and a part thereof are built into the main body case (8) so that it can be moved on wheels or caterpillars (16). In this embodiment, the wheels or caterpillars 7 (16) are equipped with a built-in drive device.

In addition, when running wheels or caterpillars (16) without using a drive device or with a drive mechanism without a drive device, wire hooks (20 ) may be connected to a wire (21) and run within the traction pipe (11).

(E) Posture control device Since this device is a device that rotates and travels within the tube (11) in a recumbent state, a posture control device is required in addition to the traveling mechanism.

This device is designed to ensure that the device is always in this position because it is desirable that the center line of the device be on the center line of the tube (11) during work traveling inside the lying tube (11). In the case of this embodiment shown in the drawings, a plurality of posture counting wheels (17) are installed on the circumference of the main body case (8) at equal intervals so as to allow people to enter the main body case (8) and to freely steer the vehicle. This device is configured such that the axle (17) is always connected to the pipe (
11) is configured to rotate in contact with the inner wall surface of the device to keep the running posture of the device constant.

Also, connect the rotating shaft (23) of the motor (6) to the main body case (8).
The motor (6) is installed parallel to the vertical center line (18) of the rotary base (4), so that the center of gravity of the device of the present invention is always located below the vertical center line (18) of the device during impact peeling work. The reason for this configuration is to facilitate posture counting.

As described above, in the present invention, the impact generating mechanism and the power mechanism are linked by a transmission device to rotate the impact generating mechanism, and the impact generating mechanism is provided with a brushing mechanism such as a wire brush on the same axis (4), If it is a fluid motor, a cleaning mechanism is attached, and this cleaning mechanism can also be installed in the main body case, and the pressure fluid can be used exclusively for the cleaning mechanism or can also be used as a power source for the fluid motor. It can also be configured.

Furthermore, it has a configuration that includes a travel mechanism that travels inside the lying pipe and a posture counting mechanism (different from the travel guide mechanism), and the functions and effects thereof will be described next.

(C) Regarding the operation and effects of the invention (a) Among the devices of the present invention, the device having an axle or caterpillar (16) as a running mechanism with a built-in drive device and a brushing mechanism will be explained first. If the electric motor (6) and traveling mechanism (16) are installed in a steel pipe (11) and driven (of course, by supplying power from the power supply cable (13)), the rotation of the motor (6) will become a transmission device. (22) and is transmitted to the rotating base rotating shaft (4), and the rotating base rotating shaft (4) rotates, so the ring rotating base fixed to the rotating shaft (4)
3) rotates and the brushing mechanism also rotates.

In such a case, the striking ring (2) rotates eccentrically about the ring rotation axis (5) due to centrifugal force. At this time, a part of the striking ring (2) flies out of the ring rotating base (3) and strikes the inner wall of the pipe. Since objects to be peeled off (7) adhere to the inner wall of the pipe, the striking ring (2) hits them and peels them off.

The striking ring (2) can be prepared in various forms, such as a gear-shaped one, a polygonal one, or a soot-shaped outer surface, as shown in the drawing. It may be used depending on the type and properties of the peeled material (7).

As mentioned above, when the impact generating mechanism is activated, the traveling mechanism is driven to rotate its wheels or caterpillars (16) to move the device itself within the pipe, and while moving, the impact ring (2) removes the material to be separated ( 7) Strike and peel and move forward.

The object to be separated (7) can be easily peeled off by repeatedly moving the device forward and backward while observing the peeling state of the object to be removed (7). During this work, the brushing mechanism rotates coaxially with the ring rotating base (3), and the wire brush (9) hits and scrubs the inner wall of the pipe, so that the rust, etc. (7) that has been struck is completely peeled off and swept away from the inner wall. , it also has the effect of polishing the inner wall.

The wire brush (9) is located at the front or rear of the ring rotating base (3) (between the main body case (8) and the ring rotating base).
Since it is possible to attach the wire brush (9) to both locations, the location of the wire brush (9) may be determined depending on the type of material (7) to be removed on the inner wall of the pipe (11), the state of contamination, etc.

Next, the adhesion state of the material to be peeled inside the pipe (11) varies greatly, and the inner wall is usually uneven, so the running of the device of the present invention not only oscillates vertically and horizontally within the pipe, This oscillation is caused by the rotation of the impact generating mechanism and the striking f of the impact ring (2).
Due to the T-blow, the entire device oscillates even more violently up and down and left and right, and sometimes the device of the present invention itself rotates within the tube and slips for the first time. Therefore, in the present invention, in order to prevent this, the position of the motor (6) is configured so that the center of gravity of the entire device is always located below the device, so that the entire device can run within the pipe without rotating. In addition, the posture counting wheel (17) is configured to allow free entry and steering into the main body case (8).
Since such a configuration means uses a known means, illustration thereof is omitted. ), it adapts to the unevenness of the inner wall of the pipe and absorbs the vertical and horizontal movements of the entire device, helping it run smoothly inside the pipe. In this manner, while moving forward or backward in the tube lying in a stable posture, the impact peeling work can be performed evenly over the entire surface of the inner wall of the tube.

When the stripping work is completed, the apparatus is taken out of the pipe by the pipe traveling device, and the peeled matter inside the pipe is removed by an appropriate means.

Note that even when the motor (6) is a fluid motor, its operation and effect are the same as described above.

(b) Next, the functions and effects of the apparatus of the present invention in which a fluid motor is used and a cleaning mechanism is provided will be described.

As described above, the electric motor (6) may be used as the power source, but a fluid motor (6) using water pressure, pneumatic pressure, hydraulic pressure, gas pressure, etc. as the power source may also be used. Figures 2 to 4 show an embodiment in which a fluid motor (6) using water pressure is used. Pressure fluid is sent through a fluid hose (26') to rotate the motor (6), and the rotational force is transferred to a transmission device (26'). 22)
The impact is transmitted to the rotating base rotating shaft (4) through the rotating base rotating shaft (4) to rotate the impact generating mechanism. The difference is whether the power source of the motor (6) is electric power or fluid pressure, but the action and effect of the impact generating mechanism are the same as those of the electric motor (6). The feature of this embodiment is that, instead of the brushing mechanism described above, fluid pressure is used as a power source in conjunction with the brushing mechanism, or fluid pressure from a separately provided device is used to remove or impact the material to be peeled (7) before peeling. The object of the present invention is to provide a cleaning mechanism that can clean the inner wall surface of the pipe (11) afterwards or at the same time. In the case of the first embodiment shown in FIG. 2, the pressure M used as a power source
Pressure fluid is sent from a fluid hose (26) provided separately from the rotary base rotary shaft (4) to a rotary swivel (25) installed at the rear end of the rotary base rotary shaft (4). When passed through, the pressure fluid enters the jet pipe (27) provided between the fluid outlet (31) and the ring rotating base (3), and enters the jet port (28) of the nozzle (28) attached to the tip of the pipe (27).
]0) toward the inner wall of the pipe.

In this embodiment, the inner wall of the tube (11) is struck and cleaned at the same time. That is, the cleaning of dirt before impact and the cleaning after impact are performed almost simultaneously. At this time, if the ejection direction of the nozzle (28) is directed opposite to the traveling direction of the device, it will have an auxiliary action and effect for traveling. In this device, as shown by the dotted line, the first plush machine! The brushing effect on the inner wall of the pipe will be even greater if it is installed in parallel.

Next, in Fig. 3, a rotary swivel (25) is attached to the middle of the rotating shaft (4) of the rotating base, and a fluid inlet (30) is bored in the rotating shaft (4) to increase the pressure inside the rotating shaft (4). A hole is made at the tip of the one-rotation base rotating shaft (4) to allow fluid to flow in,
A spout pipe (2) provided at the location from the fluid outlet (31)
7) and is ejected from the nozzle (28).

In the case of this embodiment, by adjusting the jetting direction of the nozzle (28) depending on whether the device is traveling forward or backward, it is possible to achieve the cleaning effect and the traveling assistance effect. In this embodiment, a brushing mechanism can also be provided as shown by the dotted line.

In the case of the third embodiment shown in FIG. 4, the ejection pipe (27) is provided between the ring rotation base (3) at the forefront, and its ejection port (10) is made to protrude into the ring rotation base (3). Since it is equipped with a brushing mechanism, it is particularly suitable for impact stripping work when the inside of the pipe (11) is heavily contaminated with mud or the like.

In this embodiment as well, it is possible to assist the running of the device by adjusting the jetting direction of the nozzle (28).

As described above, when the present device is provided with a cleaning mechanism, it is possible to omit the work of cleaning the inside of the pipe with a hose or the like after the striking work is completed.

Note that even in the case of the device of the present invention using a fluid motor, the operation and effect of the traveling mechanism and posture control mechanism are exactly the same as in the case of using an electric motor.

Next, in the case of this device for small diameters, for example, there may be restrictions on the structure of the traveling mechanism itself, making it impossible to use a traveling mechanism with a built-in drive device.

In such a case, attach the wire (2I) to the wire hanger (20) provided on the main body case (8).
1) Peeling work can be performed while towing the device and running the device.

As described above, the present invention places the center of gravity of the entire device at the center line of the device (
18) Steel pipes, etc., which are placed lower, have a posture control mechanism, can also be equipped with a brushing mechanism and a cleaning mechanism, and can be easily and quickly and reliably laid down in a stable posture.
1) A device that has a brushing mechanism as well as the replacement of the ring (2), which can be used to remove rust or deposits that have occurred within, depending on the state of occurrence, resistance to corrosion, or type of deposits. Or use a device with a cleaning mechanism;
Alternatively, you can use a device that has both mechanisms.Furthermore, it has the great advantage that it is extremely easy to change the location of the brushing mechanism and to select a device with a different location for the cleaning mechanism, which improves stripping efficiency. It also has the great advantage of being very efficient in brushing or cleaning, and it is extremely easy to work with pipes of diameters that were conventionally impossible to do manually.

[Brief explanation of the drawing]

Some of the drawings show embodiments, and FIG. 1 is a partially cutaway perspective explanatory view showing the usage state of the present invention apparatus without a washing mechanism. FIG. 2 is a schematic vertical cross-sectional view showing a first embodiment of the washing mechanism. FIG. 3 is a schematic longitudinal cross-sectional view showing a second embodiment of the washing mechanism. FIG. 4 is a schematic vertical cross-sectional view of a third embodiment of the washing mechanism. FIG. 5 is a cross-sectional explanatory view showing the positional relationship between the device of the present invention and the pipe and the structural positional relationship of each mechanism constituting the device of the present invention, and FIG. 6 is a longitudinal explanatory view thereof. (1)......Blow protrusion (2)...Blow ring (3)...Ring rotation base (4)...
・・・・・・Rotating base rotation axis (5)・・・・・・・・・
Ring rotating shaft (6)... Motor (7)... Items to be peeled off (8)... Body case (9)...・・・・・・Wire brush (10)・・
......Spout port (11)...Pipe (13)...Electric cable (14)...
......Bearing (15)...Seal (16)...Wheel or caterpillar (1
7)・・・・・・Posture counting wheel (18)・・・・
... Vertical center line of main case (20) ...
...Wire hanger (21)...Wire (22)...Transmission device (belt, gear) (23)... Motor rotation axis (24
)...Brush mounting board (25)...Rotary swivel (2
6)...Fluid hose (26')...
...Fluid hose (for fluid motor) (27)
......Ejection pipe (28)...Nozzle (30)...Fluid inlet (into the rotating shaft of the rotating base)

Claims (5)

[Claims] (1) Upper and lower ring rotation bases (3) are provided with a plurality of ring rotation shafts (5) along the outer periphery of the upper and lower ring rotation bases (3) at appropriate intervals.
A striking ring (2) having striking protrusions (1) formed on its outer circumferential surface is rotatably suspended on the ring rotating shaft (5), and the rotating base rotating shaft (4
), and the rotating shaft (4) is further equipped with wire brushes (9) that can be exchanged and attached above and below the ring rotating base (3) to constitute a blow generating mechanism, and the blow generating mechanism is connected to a motor ( 6) and rotates in conjunction with the striking ring (2).
) rotates eccentrically around the ring rotation shaft (5) due to centrifugal force, and a part of the ring rotation base (3) protrudes outside the outer periphery of the ring rotation base (3) to impact and peel off the object (7) that needs to be removed and is attached to the inner wall of the steel pipe, etc. The main body case (8), which is constructed as shown in FIG. A device for removing rust generated or adhering concrete on the inner wall of a steel pipe or the like in a recumbent state, characterized in that it is installed so as to be located below the center line of the mechanism. (2) The peeling device according to claim 1, wherein the rotation motor (6) of the impact generating mechanism is a fluid motor. (3) Pressurized fluid is passed through the rotating shaft of the rotating base (4), and its jet port (10) is provided so as to eject from between the ring rotating bases (3) toward the inner wall of the pipe (11), such as a steel pipe. The peeling device according to claim 2, comprising: (4) The peeling device according to claim 2, wherein the pressurized fluid is passed through the rotary base rotation shaft (4) and the jet port (10) thereof is provided at the tip of the rotary base rotation shaft (4). (5) The peeling device according to claim 2, wherein the pressurized fluid is passed through the rotary base rotating shaft (4) and its jet port (10) is provided on the ring rotary base at the tip position.