JPH0470066B2 - - Google Patents

Description

[Detailed Description of the Invention] (A) Object of the Invention (a) Field of Industrial Application The present invention relates to a stripping device for stripping rust, etc. that has occurred or adhered to a steel pipe or the like in a lying state.

(b) Regarding conventional technology It is common practice to remove rust adhering to the inner wall surface of steel pipes, etc., or to remove paint applied to these or adhering concrete, etc., or to prepare for the next construction. This is what is being done. However, these rusts and the like have to be removed manually by workers by hitting them with a hammer or with a jet chisel. 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 peeling 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) Problems to be solved by the present invention In view of the above, the applicant of the present application previously filed a patent application filed in
23900 provides a method and device for removing rust and adhering concrete from the inner walls of steel pipes, etc. that are erected. Eliminates manual labor to remove rust that has occurred, a thin layer of concrete that has adhered during construction, many small lumps of paint, or painted paint, not only on large-diameter steel pipes, but also on steel pipes with diameters that are difficult to remove by humans. The object of the present invention is to provide an apparatus that can perform peeling extremely easily and efficiently.

(B) Regarding the structure of the invention The present invention was invented with the above-mentioned objectives, but it also includes a striking mechanism for striking and peeling off objects to be peeled, a power mechanism for rotating the mechanism, and a traveling mechanism and posture of the entire device. It is composed of a controlling mechanism, a brushing mechanism, a cleaning mechanism, etc. Next, each mechanism will be explained in detail.

(B) About the impact generating mechanism Fig. 1 is a partially cut-away perspective explanatory view showing the state of use of the device according to an embodiment of the present invention, which peels off deposits 7 such as rust generated on the inner wall surface of a steel pipe or the like. However, a pair of ring rotation bases 3 at the front and rear are removably connected and fixed with a plurality of ring rotation shafts 5 at positions close to their outer peripheries and at appropriate intervals. Between the front and rear ring rotating bases 3, a striking ring 2 having a gear-shaped striking protrusion 1 formed on its outer peripheral surface is suspended on a ring rotating shaft 5 so as to be freely rotatable between the ring rotating bases 3. A ring rotating base 3 is fixedly attached to a rotating base rotating shaft 4, and the rotating base rotating shaft 4 is configured to rotate in conjunction with a motor 6 via a transmission device 22.

Note that this impact generating mechanism may have a multi-stage structure in which the ring rotation base 3 is constructed, and in this embodiment, it is constructed in a two-stage structure.

Next, among the constituent parts, the striking ring 2 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 so that the corner thereof serves as the striking protrusion 1, or the striking protrusion 1 may be formed in the shape of a bar on the outer peripheral surface of the ring. Next, the size of the striking ring 2 is such that when the striking generating mechanism is rotated, it rotates eccentrically due to the centrifugal force, and a part of the striking ring 2 jumps out of the periphery of the ring rotation base 3, striking the object 7 to be separated. The size is such that it does not come into contact with the rotating base rotating shaft 4 when it is reversed due to reaction. Therefore, depending on the condition of the inner wall surface of the steel pipe or the like, or depending on the diameter of the pipe, the type and diameter of the striking ring 2 can be changed and replaced, or the size of the ring rotation base 3 (larger or smaller diameter) can be changed to perform the impact. A generation mechanism may also be configured.

(B) About the brushing mechanism and washing mechanism (A) About the brushing mechanism This mechanism is placed on the rotating base rotating shaft 4 and is located at the front or rearmost part of the ring rotating base 3 (between the ring rotating base and the main body case). It is configured so that it can be attached and replaced to any one of the following. Of course, it may be provided in both the front and the rear.

That is, the present embodiment (FIG. 1) (FIG.
Figure) (Figure 3) shows the wire brush 9.
The wire brush 9 has a length sufficient to strike the inner wall of the tube 11 with the tip of the wire brush 9 and sweep away the peeled matter 7 when the blow generating mechanism rotates. 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 combination 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 7 and at the same time washing away the peeled object and the inner wall of the pipe after peeling off.The power source of this device is pressurized fluid, and the motor 6 is This is a more effective mechanism if provided when the motor 6 is used.
Of course, it is possible to use electric power as the power source, but this is disadvantageous mechanically and economically.

FIG. 2 shows a first embodiment of this mechanism, in which a rotary swivel 25 is attached to the rear of the rotating base rotating shaft 4 in the main body case 8, and a fluid hose 2 is attached.
Pressure fluid is caused to flow into the rotary base rotation shaft 4 from the ring rotary base 3, and its jet port 10 is provided between the ring rotary bases 3 toward the inner wall of the pipe 11. Reference numeral 27 indicates an ejection pipe, and 28 indicates a nozzle. The nozzle 28 is attached to the ejection pipe 27 so as to be able to change the ejection direction of the pressure fluid. 2
6' is a fluid hose for the motor. In this embodiment, the wire brush 9 is connected to the main body case 8 and the ring rotating base 3 as shown by the dotted line.
Brushing may be provided between the

Next, FIG. 3 shows an embodiment in which a pressure fluid jet pipe 27 and its jet port 10 are provided at the tip of the rotating base rotating shaft 4, and the rotary swivel 25 is placed inside the main body case 8 and placed on the rotating base rotating shaft 4. It is provided. In this embodiment as well, the fluid hose 2
6 is installed separately from the fluid hose 26' for the motor 6, but it is also technically possible to use pressure fluid for the motor 6.

Reference numeral 30 denotes a fluid inlet into the rotary base rotating shaft 4, and 31 denotes an inlet into the ejection pipe 27.

Further, FIG. 4 shows a third embodiment of the fluid ejection port 1.
In both the second and third embodiments, the nozzle 28 is rotatable as in the first embodiment, so that the direction of fluid ejection can be changed.

In addition, the other fluids mentioned above are connected to the main body case 8.
It is also possible to have a configuration in which it protrudes outward.

Although the cleaning mechanism of the present invention has the above-described 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 may also be used.

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

Further, the motor 6 is provided within the main body case 8 with its rotating shaft 23 parallel to and below the vertical center line 18 of the main body case 8, that is, the rotary base rotating shaft 4.

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

Note that it is also possible to have a configuration in which the rotating shaft 23 of the motor 6 and the rotating base rotating shaft 4 are coaxially provided, but in that case, a weight that lowers the center of gravity of the device may be provided.

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

The fluid used as the power source for the fluid motor is
It may be water, air, oil, gas, etc.

(d) About the traveling mechanism The device of the present invention is used for cleaning the inner wall of horizontally oriented steel pipes 11, etc.
It is essential to have a means of traveling within the area. In this embodiment shown in the drawings, the front part of the main body case 8 and a part of the main body case 8 are
It is constructed such that it can be built in and run on wheels or a caterpillar 16. Wheel or caterpillar 16
In this embodiment, a device with a built-in driving device is used.

In addition, wheels for traveling or caterpillar 16
When traveling without using a drive device or with a traveling mechanism without a drive device, the wire 21 is attached to a wire hook 20 provided on the main body case 8 of the peeling device of the present invention and the wire is run inside the towing pipe 11. You may let them.

(e) Regarding the 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.

Since it is desirable that the center line of this device always be on the center line of the tube 11 while working inside the lying tube 11, this device is designed to ensure that the device is always in this position. In the case of the present embodiment shown in the drawings, a plurality of posture control wheels 17 are installed on the circumferential surface of the main body case 8 at equal intervals so as to be able to move in and out of the main body case 8 and freely steer the apparatus. The wheels 17 are always rotated in contact with the inner wall surface of the tube 11 to keep the running attitude of the device constant.

In addition, the motor 6 is installed so that the rotation axis 23 of the motor 6 is parallel to the vertical center line 18 of the main body case 8, that is, the rotating base rotation axis 4, so that the center of gravity of the apparatus of the present invention is always below the vertical center line 18 of the apparatus during impact peeling work. The reason why it is configured to be located is to facilitate posture control.

In the present invention, as described above, the impact generating mechanism and the power mechanism are interlocked by the 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 shaft 4. If the power source 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 to allow. Furthermore, it is configured to have a traveling mechanism that travels inside the reclining pipe and a posture control mechanism (different from the traveling guide mechanism).
Next, I will discuss its function and effects.

(C) Regarding the operation and effects of the invention (a) Of the devices of the present invention, to explain the device that has wheels or caterpillars 16 as a traveling mechanism with a built-in drive device and a brushing mechanism, the device will first be explained as follows. 11 and drives the electric motor 6 and traveling mechanism 16 (by supplying power from the power supply cable 13, of course), the rotation of the motor 6 is decelerated by the transmission device 22, and the rotation of the motor 6 is reduced to the rotating base rotating shaft 4. Since the rotating base rotating shaft 4 is rotated by the transmission, the ring rotating base 3 fixed to the rotating shaft 4 is rotated and the brushing mechanism is also rotated. In such a case, the striking ring 2 rotates eccentrically about the ring rotating shaft 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 7 to be separated are attached to the inner wall of the pipe, the striking ring 2 strikes them and separates them.

As shown in the drawings, the striking ring 2 can be prepared in various forms, such as a gear-shaped one, a polygonal one, or one in which the outer surface of the striking ring 2 is formed into a trapezoidal shape. You can use them depending on their type and properties.

As described above, when the impact generating mechanism is activated, the traveling mechanism is driven and its wheels or caterpillar 16 are activated.
The device rotates to move the device itself within the pipe, and while moving, strikes the material to be separated 7 with the striking ring 2 to advance the separation. By repeatedly moving the device forward and backward while observing the peeling state of the object 7 to be peeled off, the object 7 to be peeled off can be easily removed. During this work, the brushing mechanism rotates coaxially with the ring rotation 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, and the inner wall is further polished. There is an effect. Since the wire brush 9 can be attached to the front or rear part of the ring rotating base 3 (between the main body case 8 and the ring rotating base) or both, it is possible to The mounting position of the wire brush 9 may be considered depending on the state of contamination and the like.

Next, the state of adhesion of materials to be separated in the pipe 11 varies widely, and the inner wall is usually uneven, so the traveling of the device of the present invention oscillates vertically and horizontally within the pipe, and this oscillation Due to the rotation of the impact generating mechanism and the striking impact of the impact ring 2, the entire device swings even more violently in the vertical and horizontal directions, and in some cases, the device of the present invention itself begins to rotate within the tube. 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 without rotating within the pipe, and can maintain its posture. The control wheels 17 are constructed so that they can freely move in and out of the main body case 8 and can be steered (such construction means are not shown since they use publicly known means), so that unevenness on the inner pipe wall is avoided. It adapts to the movement and absorbs the vertical and horizontal fluctuations of the entire device, helping it run smoothly in the pipe. In this manner, while moving forward or backward in the tube lying in a stable posture, the impact stripping operation can be performed evenly over the entire inner wall of the tube.

When the stripping work is completed, the device is taken out of the pipe using 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 effects are the same as described above.

(b) Next, we will discuss the functions and effects when a fluid motor is used in the device of the present invention and a cleaning mechanism is also provided.

Although the electric motor 6 may be used as a power source as described above, a fluid motor 6 that uses water pressure, pneumatic pressure, oil pressure, gas pressure, etc. as a power source may also be used. 2 to 4 show an embodiment in which the fluid motor 6 uses water pressure, and the motor 6 is rotated by feeding pressurized fluid with a fluid hose 26'.
The rotational force is transmitted to the rotating base rotating shaft 4 via the transmission device 22 to rotate the impact generating mechanism. The difference is whether the power source of the motor 6 is electric power or fluid pressure, and 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 fluid pressure is used as a power source in place of the above-mentioned brushing mechanism or in conjunction with the brushing mechanism, or fluid pressure from a separately provided device is used to remove the object 7 that needs to be peeled off before or after impact. It is possible to provide a cleaning mechanism that can clean the inner wall surface of the tube 11 by doing both at the same time. 1 shown in Figure 2.
In the case of the embodiment, pressure fluid is sent from a fluid hose 26 provided separately from the pressure fluid used as a power source to a rotary swivel 25 installed at the rear end of the rotating base rotating shaft 4, and this fluid is used to rotate the rotating base. When the pressure fluid passes through the shaft 4, it enters the ejection pipe 27 provided between the ring rotation base 3 from the fluid outlet 31, and is ejected from the ejection port 10 of the nozzle 28 attached to the tip thereof 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, an auxiliary function and effect for traveling can be obtained. If this device is also provided with a brushing mechanism as shown by the dotted line, the brushing effect on the inner wall of the pipe will be even greater.

Next, in FIG. 3, a rotary swivel 25 is attached in the middle of the rotating base rotating shaft 4, and a fluid inlet 30 is bored in the rotating shaft 4 to allow pressure fluid to flow into the rotating base rotating shaft 4. The fluid is sent from a fluid outlet 31 formed at the tip of the fluid to an ejection pipe 27 provided at that location, and is ejected from a nozzle 28 .

In this embodiment, by adjusting the jetting direction of the nozzle 28 depending on whether the device is moving 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 jet pipe 27 is provided between the ring rotating base 3 at the forefront, and its jet port 10 projects from the ring rotating base 3, and a brushing mechanism is also provided. 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 present invention apparatus 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, the wire 21 can be hooked to a wire hook 20 provided on the main body case 8, and the wire 21 can be towed and the peeling work can be performed while the device is running.

As described above, the present invention places the center of gravity of the entire device below the center line 18 of the device, has a posture control mechanism, and can also be equipped with a brushing mechanism and a cleaning mechanism, making it easy, quick and reliable to maintain a stable posture. Rust or deposits that have occurred in the steel pipe 11 that is installed lying down on the impact ring 2 are removed depending on the state of occurrence, the state of the deposit, or the type of deposit.
In addition to changing the replacement, it is also necessary to decide whether to use a device with a brushing mechanism or a device with a cleaning mechanism, or a device with both mechanisms, change the mounting position of the brushing mechanism, and change the cleaning mechanism. It has the great advantage that it is extremely easy to select a device with a different installation position for the conditioner mechanism, and the stripping efficiency and brushing or cleaning efficiency are also high, and it can be used for pipes with diameters that were conventionally impossible to do manually. It also has the great advantage of being extremely easy to work with.

[Brief explanation of the drawing]

Some of the drawings show embodiments, and FIG. 1 is a partially cutaway perspective explanatory view showing how the device of the present invention without a washing mechanism is used. Figure 2 shows the first part of the cleaning mechanism.
FIG. 2 is a schematic longitudinal cross-sectional view showing an example. 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. DESCRIPTION OF SYMBOLS 1... Hitting protrusion, 2... Hitting ring, 3... Ring rotating base, 4... Rotating base rotating shaft, 5... Ring rotating shaft, 6... Motor, 7... Item to be peeled off,
8...Main case, 9...Wire brush, 10
...Ejection port, 11 ... Pipe, 13 ... Power cable, 14 ... Bearing, 15 ... Seal, 16 ... Wheel or caterpillar, 17 ... Posture control wheel, 1
8... Vertical center line of main body case, 20... Wire hanger, 21... Wire, 22... Transmission device (belt, gear), 23... Rotating shaft of motor, 2
4...Brush mounting board, 25...Rotary swivel, 26...Fluid hose, 26'...Fluid hose (for fluid motor), 27...Ejection pipe, 28...
...Nozzle, 30...Fluid inlet (into the rotating shaft of the rotating base), 31...Fluid outlet (to the ejection pipe).

Claims (1)

[Scope of Claims] 1. Upper and lower ring rotation bases 3 are connected and fixed at appropriate intervals with a plurality of ring rotation shafts 5 provided at appropriate intervals along the outer periphery thereof, A striking ring 2 having a striking protrusion 1 formed on its outer circumferential surface is rotatably suspended on the ring rotating shaft 5 and attached to the rotating base rotating shaft 4. Furthermore, the rotating shaft 4 has a striking ring 2 formed on the outer peripheral surface thereof with striking protrusions 1. A replaceable wire brush 9 is attached to constitute a blow generating mechanism, and when the blow generating mechanism is rotated in conjunction with the motor 6, the blow ring 2 rotates eccentrically around the ring rotation shaft 5 due to centrifugal force. The main body case 8 is constructed so that a part of it protrudes outside the outer periphery of the ring rotation base 3 and is attached to the inner wall of a steel pipe, etc. to be removed by impact, and the main body case 8 has a built-in motor 6. A device 16 and a posture control device 17 for the entire device are provided, and the center of gravity of the device is located below the center line of the impact generating mechanism. A device for removing rusted or adhered concrete, etc. 2. The peeling device according to claim 1, wherein the rotation motor 6 of the impact generating mechanism is a fluid motor. 3. The peeling device according to claim 2, wherein the pressure fluid is passed through the rotary base rotating shaft 4 and the jet port 10 thereof is provided to eject from between the ring rotary bases 3 toward the inner wall of the pipe 11, such as a steel pipe. . 4. The peeling device according to claim 2, wherein the pressurized fluid is passed through the rotary base rotating shaft 4 and the jet port 10 thereof is provided at the tip of the rotary base rotating shaft 4. 5. The peeling device according to claim 2, wherein the pressurized fluid is passed through the rotary base rotating shaft 4 and the jet port 10 thereof is provided on the ring rotary base at the tip position.