JPS5935747B2 - Grinding equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to a cleaning device.

As a conventional polishing device that removes rust, paint, etc. from the surface to be polished by projecting abrasive grains onto the surface to be polished, for example, as shown in Japanese Patent Application Laid-open No. 52-115495, There is one that is configured so that the abrasive grains projected onto the surface to be polished can be smoothly collected.

This polishing device is provided movably along the surface to be polished using wheels.

It is desirable for this type of high-speed polishing equipment to operate efficiently on a wide processing surface in order to improve work efficiency.For example, at the end of the forward straight movement, the equipment is shifted to the unprocessed surface side and then the returning straight movement is started. In such cases, it is most desirable to move the device in a straight line straight to the side while keeping it in the same position, as this is the shortest distance to move. Since the device is moved by the following means, it is not possible to move the device laterally while maintaining the same posture, and the device must be rotated, which makes it difficult to change direction smoothly in large-sized polishing devices.

The present invention was made in view of these points, and is a polishing device that can smoothly collect abrasive grains projected at high speed onto a surface to be polished. The purpose is to enable horizontal movement and improve work efficiency.

Next, one embodiment of the present invention will be described based on FIGS. 1 and 2.

A truck 4 is formed by providing an axle 2 at the lower front and rear portions of the frame 1 and providing wheels 3 at both ends of the axle 20 at the front and rear portions.

The wheels 3 are driven in the longitudinal direction by a motor 5 fixed on the frame 1 via a chain transmission mechanism 6.7.

Each of the above-mentioned wheels 3 has four beer barrel-shaped rollers 3a on each side of a central plate portion 3b provided perpendicularly to the axle end, the outside diameter of which gradually swells from both ends toward the center. Overall, the rollers are arranged so as to form a circular shape on the outer circumferential surfaces of the rollers on both sides, and the roller axes are individually set parallel to the center plate portion 3b and rotatably supported in the fixed position.
The trolley 4 is forcibly driven in the front-back direction and is also moved in the left-right direction by an external force.

In addition, support parts 11 are provided protrudingly on both sides of the cart 40, and a polishing abrasive injection circulation unit 13 is connected to the support parts 11 on both sides via a spindle 12 to a surface to be polished such as the floor of a ship. Connected so as to be rotatable in the direction of approach and separation.

This abrasive grain injection circulation unit 13 includes a base frame 14 fitted to the support shaft 12, an injector part 15 fixed to the inclined upper surface of the base frame 14 and for spraying abrasive grains, such as grids, and One cylindrical part 16 is provided from the injector part 15 in an inclined manner with respect to the surface to be polished A, and the abrasive grain projection is opened to the surface to be polished A at the tip of this one cylindrical part 16. Mouth 17
The above-mentioned one cylindrical portion 1 is
The other cylindrical part is folded back in a V-shape with respect to 6.

18, and a tank 2 serving as an abrasive grain storage unit connected to the other cylindrical portion 18 via a curved cylindrical portion 19 provided continuously.
1, a communication part 22 that communicates the lower part of the tank 21 with the injector part 15, and a dust bag 23 connected to the upper part of the tank 21 and serving as an object storage part. It is.

, The injector section 15 has a rotor made of a plurality of radial rotor blades rotatably provided inside the outer casing,
An abrasive grain supply section is provided in the center of the rotor, and the abrasive grains in the center are rotated together with the rotor blades by the rotor blades of the rotor, and at this time, centrifugal force is applied to the abrasive grains. The abrasive grains are accelerated and injected into the one cylindrical portion 16 from the opening of the outer casing.

24 is the rotation axis of the rotor, and 25 is this rotation axis 2.
4 is a drive motor, and 26 is a V-belt for power transmission.

Further, the abrasive grain projection port 17 is provided at the lower end opening of a seal cover 28 flanged to the opening flange 27 at the lower end of the one and the other cylindrical portions 16, 1B.

This seal cover 28 is formed of a rubber material so that its plane surface is elliptical and its side surfaces are inverted trapezoidal.

Further, casters 29 are provided on the opening flange 27, and the casters 29 allow the abrasive grain injection circulation unit 1
3 together with the support shaft 12.

This caster 29 is provided as close as possible to the lower left end lower portion 17a of the seal cover 28 in the figure so that the grounding level is the same.

As a result, the left end lower part 17a moves up and down integrally with the casters 29 about the support shaft 12, and the surface to be polished A.
can be traced, and is always pressed against the surface A to be polished with moderate pressure.

Therefore, the abrasive grains projected onto the surface A to be polished from the one cylindrical portion 16 are reflected to the other cylindrical portion 18 without leaking to the outside.

Furthermore, the inclination angle of the one cylindrical portion 16 and the other cylindrical portion 18 is the distance between this vertical surface and one cylindrical portion 16 if a vertical plane is erected at the bent portion of both cylindrical portions 16 and 18. The angle of is 3
The angle between the vertical plane and the other cylindrical portion 18 is set to be 25° to 40°.

For example, if one cylindrical part 16 is 30 degrees, the other cylindrical part 1
8 is 25°, and similarly if one is 400, the other is 3
If one side is 45°, the other is 40°.

In this way, the abrasive grains projected from one cylindrical part 16 onto the surface A to be polished are reflected in parallel to the other cylindrical part 18 and are smoothly collected.

Further, an air ejector 32 with a trumpet-shaped suction port 31 facing both sides of the abrasive grain projection port 17 is provided along the side surface of the other cylindrical portion 18, and an upper end discharge port of the air ejector 32 is connected to a pipe 33. Through the curved cylinder part 1
9 and communicates with the tank 21.

This air ejector 32 has an air nozzle inserted concentrically into the inside of a cylindrical body, and the above-mentioned suction port 31 is communicated with the outer periphery of this nozzle via a suction pipe 34. The air in the suction pipe 34 is drawn upward by the jet of air supplied to the suction pipe 34 .

In addition, a separating plate 3 is provided inside the tank 21 in an inclined manner from the top.
6 is provided, and this separation plate 36 catches the heavy abrasive grains that have jumped into the tank 21 and allows them to fall downward, and also removes light objects such as rust and paint removed from the surface to be polished. The lower end of the separating plate 36 is bypassed to separate the parts upwardly.

Further, the abrasive grains collected in this tank 21 are passed through the above-mentioned passage section 22 and the ball valve 37 to the above-mentioned injector section 1.
50 rotor, and the object to be polished is discharged into the dust bag 23 through a discharge section 38 provided on the upper surface of the upper object tank 21.

The air supply pipe 39 is connected to the dust bag 23 in the discharge part 38.
As a result, an air ejector action is performed in the discharge portion 38, and the object to be polished in the tank 21 is sucked up to the discharge portion 38.

Note that the dust bags 23 are provided on both sides of the motor 25, for example.

41 is a switch box. Then, the above trolley 4
while driving the injector section 15 to rotate,
While moving the abrasive grain projection port 17 in close contact with the surface A to be polished, the abrasive grains are projected onto the surface A to be polished to eliminate rust and paint deposited on the surface A to be polished. The object to be polished is turned into dust and removed from the surface A to be polished.

Most of the abrasive grains projected onto the surface to be polished A are reflected into the other cylindrical portion 18 due to the reaction of the projection force.

It is guided by the curved cylinder part 19 and collected into the tank 21.

Further, some of the abrasive grains projected onto the surface to be polished A tend to remain on both sides of the projection hole 170;
The abrasive grains on both sides of the T are sucked up from the suction port 31 of the air ejector 32 and discharged upward into the curved cylindrical portion 19, and there is no fear that the abrasive grains remain in the projection port 17.

Furthermore, since the air discharged from the air ejector 32 is blown upward inside the curved cylinder portion 19, the dust-like object to be polished is also sucked up by the rising air, and is inside the tank 21 together with the abrasive grains. The heavy abrasive grains hit the separation plate 36 and fall downward to be re-supplied to the injector section 15, while the light objects to be polished bypass the separation plate 36 and are stored in the dust bag 23. .

Note that even if the surface to be polished has an uneven portion or a stepped portion while the cart 40 is traveling, the entire abrasive grain injection circulation unit 13 is
Since the abrasive grain projection port 17 can be rotated vertically around the center, the abrasive grain projection port 17 moves up and down in accordance with changes in the surface to be polished, and is always in close contact with the surface to be polished.

Next, another embodiment of the present invention will be described with reference to FIGS. 3 and 4.

Note that similar parts are given the same reference numerals and their explanations will be omitted.

A pair of support parts 11 are attached and replaced only to the frame 1 on one side of the trolley 4, and the abrasive grain injection circulation unit 1 is attached to this support part 11.
3 support shafts 12 are rotatably provided.

Further, the curved cylindrical portion 21a on the inlet side of the tank 210 is directly connected to the other cylindrical portion 18.

Further, the tank 21 is formed vertically.

Furthermore, the casters 29 and air ejector 32 provided in the above embodiment are removed, and the hole for inserting the suction pipe 34 of the air ejector 32 into the inside of the seal cover 28 is closed.

Further, a hanging frame part 51 is provided projecting from both sides of the upper part of the frame 1 of the truck 4, and a lower part of a main body 54 of a hoisting machine 53 is connected to the upper end of this hanging frame part 51 via a shaft 52.

This winding machine 53 winds two wire ropes 55 hanging down along the vertical surface B to be polished around upper and lower winding drums 56 multiple times, and the wire ropes 55 are wound by rollers 57 on both sides. The upper and lower winding drums 56 are connected to a gear (not shown) and a chain transmission mechanism 58 by pinching the drum surface.
It is driven by a motor 59 with a brake to move the main body 54 up and down.

Note that a frame 6 integrally protrudes from the hanging frame portion 51.
1 and 62 are fixed to the side surface of the tank 21.

Then, the trolley 4 is attracted to a vertical surface B to be polished, such as a vertical wall surface of the oil storage tank, by a magnet (not shown), and the hoisting machine 53 is driven to move the trolley 4 and the unit 13 up and down. Remove rust, paint, etc. from surface B to be polished.

The operation of the unit 130 in this embodiment is the same as that in the embodiments shown in FIGS. 1 and 2, so a description thereof will be omitted.

In addition, in this way, the cart 4 and the abrasive jet circulation unit 1
3 are connected via the support shaft 12,
By changing the mounting position of the support shaft 12, it is possible to easily convert a grinding device for work on a horizontal surface into a grinding device for work on a vertical surface.

As described above, according to the present invention, a grinding device capable of smoothly collecting abrasive grains projected onto a surface to be polished at high speed is provided movably by a cart, and the wheels of this cart are arranged at the end of the axle. On both sides of the center plate section, which is installed at right angles to The rollers are arranged in such a way that the rollers are individually set parallel to the central plate and rotatably supported at a fixed position, so that the plurality of beer bowl-shaped rollers collectively support the wheel. At the same time, each unit rotates to enable movement in a direction perpendicular to the direction of movement due to the rotation of the wheels.For example, at the end of the outward linear movement, the device is shifted to the untreated surface side and starts the return linear movement. In such cases, the device can be moved sideways in the same position with a relatively small external force, and the efficiency of this type of polishing work can be improved through efficient movement of the device.

In addition, an air ejector is provided along the other cylindrical part on the opposite side of the abrasive grains, and the suction port of this air ejector faces both sides of the abrasive grain projection port, and the discharge port of this air ejector is placed on the other cylindrical part. Since it is connected upward into the inside of the continuous curved cylinder part, the abrasive grains that may remain on both sides of the abrasive grain projection port Q and the dust-like coating peeled off from the surface to be polished are removed. The abrasive material can be sucked up by this air ejector, and the abrasive grains reflected into the curved tube section are further blown up to the abrasive grain storage section by the air jetted into the curved tube section from the discharge port of this air ejector. The abrasive grains and the object to be polished can be effectively delivered to the abrasive grain receptacle.

[Brief explanation of drawings]

Fig. 1 is a side view showing one embodiment of the polishing device of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a side view showing another embodiment of the present invention, and Fig. 4 is a front view thereof. It is. 1...Frame, 2...Axle, 3...
...Wheel, 3a...Beer barrel-shaped roller, 3
b...Central plate part, 4...Dolly, 15...
...Injector part, 16...One cylinder part, 17
......Abrasive grain projection port, 18...Other cylinder part, 19, 21a...Curved cylinder part, 21...
...Tank as abrasive grain storage section, 22...
・Communication part, 23...Dust bag as an object storage part, 31...Suction port, 32...
・Air ejector, A, B...Surface to be polished.

Claims (1)

[Scope of Claims] 1. An injector section that injects abrasive grains, one cylindrical section provided from the injector section in an inclined manner with respect to the surface to be polished, and a tip end of this one cylindrical section. an abrasive grain projection opening opening toward the surface to be polished; and the other cylindrical part folded back in a V-shape with respect to the one cylindrical part through the abrasive grain projection opening;
A curved cylindrical portion provided continuously on the other cylindrical portion, an abrasive grain accommodating portion connected to this curved cylindrical portion, and a communication portion that communicates the lower part of this abrasive grain accommodating portion with the above-mentioned injector portion. and a to-be-ground object accommodating part connected to the upper part of the abrasive grain accommodating part are provided so as to be movable along the surface to be polished by a trolley, and this trolley has wheels mounted on a frame via an axle. Now, this wheel is
On both sides of the center plate section installed perpendicular to the wheel end, there are multiple barrel-shaped rollers whose outer diameter gradually swells from both ends toward the center, and the outer peripheral surfaces of both rollers are generally circular. What is claimed is: 1. A polishing device characterized in that the rollers are arranged so as to form a central plate, and each of the rollers is rotatably supported at a fixed position with the axis of each roller set parallel to the center plate. 2. An injector part that injects abrasive grains, one cylindrical part provided from this injector part in an inclined manner with respect to the surface to be polished, and a tip part of this one cylindrical part that injects the surface to be polished. an abrasive grain projection opening opened to the other end, and the other cylindrical part folded back in a V-shape to the one cylindrical part through the abrasive grain projection opening;
A curved cylindrical portion provided continuously on the other cylindrical portion, an abrasive grain accommodating portion connected to this curved cylindrical portion, and a communication portion that communicates the lower part of this abrasive grain accommodating portion with the above-mentioned injector portion. and an object accommodating part connected to the upper part of the abrasive grain accommodating part, and a suction port provided along the other cylindrical part and having suction ports facing both sides of the abrasive grain projection port. An air ejector connected to the inside of the curved cylinder part with its discharge port facing upward is provided so as to be movable along the surface to be polished by a trolley, and this trolley is constructed by providing wheels on a frame via an axle. The wheels are equipped with a plurality of barrel-shaped rollers whose outer diameters gradually bulge out from both ends toward the center on both sides of a center plate installed at right angles to the end of the axle. A polishing device characterized in that the rollers are arranged so as to form a circular surface, and the roller axes are individually set parallel to a central plate portion and rotatably supported at fixed positions.