JP3465211B2 - Concrete shaving equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete picking device for spraying a blast material onto the surface of concrete to scrape off the surface of the concrete.

[0002]

2. Description of the Related Art Conventionally, when installing a door of a building,
As shown in FIG. 12, the building frame 4 is provided on the side wall 1 along both sides and the upper side of the door 3, and the floor surface 2 below the door 3 is slidable.
Is provided.

More specifically, FIG. 10 or FIG.
As shown in FIG. 1, at the lower end of the building frame 4, the width direction (door 3
4a protruding downward on both sides (in the thickness direction of
Is formed. The scraper 5 is formed by bending a metal plate into a substantially L shape in cross section, and is formed of a horizontal portion 5a along the upper surface of the floor and a vertical portion 5b extending downward from one end of the horizontal portion 5a. Has been done. When viewed in plan, the vertical portion 5b is provided so as to be located on a straight line connecting the anchor portions 4a on the side where the door 3 is provided in the building frame 4 located on both sides of the door 3. And such a door 3
The building frame 4 and the scraper 5 are installed by embedding the anchor portion 4 a and the vertical portion 5 b in the mortar 17 in the grooves 13 and 16 having a predetermined depth formed on the floor surface 2.
At this time, as shown in FIG. 10, the groove 16 in which the anchor portion 4a of the building frame 4 and the vertical portion 5b of the skiddle 5 which are located on the same straight line in a plan view is embedded is one anchor portion 4a.
To the other anchor portion 4a.

In constructing the door having such a structure, first, the anchor portion of the building frame 4 is subjected to scumming work on the peripheral portion in which the anchor 4a is embedded and the portion in which the slide 5 is embedded.
The grooves 13 and 16 having a predetermined depth are formed, and the anchor portion 4a is formed.
The groove portion 13 and the groove portion 16, and the vertical portion 5b of the sliding member 5 is inserted into the groove portion 16, and the mortar 1 is inserted into the groove portions 13 and 16.
Fill 7. After that, the work is completed by attaching the door 3 inside the building frame 4 and the sliding rail 5.

In the picking work, the range to be picked is inked, the picker cuts the inking portion with an electric cutter, and the assistant sucks and collects concrete powder with a vacuum cleaner. After the concrete in the cutting area is scraped (destroyed) by a breaker, etc., the concrete powder or concrete pieces destroyed by this breaker is sucked with a vacuum cleaner etc.
Remove it, put it away, and you're done.

As described above, since the picking work is performed by a breaker or the like, there is a problem that the picking accuracy is poor and unnecessary picking is performed, resulting in a large picking amount.
Therefore, the amount of backfilling with mortar or the like becomes large, a large amount of mortar for backfilling is required, and there is a problem that it is uneconomical.

[0007] In order to reduce the picking accuracy and the picking amount, the applicant of the present invention invented a concrete picking device using sandblast and applied for a patent (Japanese Patent Application No. 3-204505). No.).

As shown in FIG. 9, this concrete picking device is equipped with a carriage 22, a vacuum type sandblasting device 23 mounted on the carriage 22, and a nozzle of the sandblasting device 23 mounted on the carriage 22. Part 29
Manipulator 25 for controlling the above in a required operation, and a compressor 2 for supplying compressed air to the sandblast device 23.
4 and.

[0009]

However, the concrete picking device shown in FIG. 9 has a problem that the picking accuracy is not sufficiently high and the picking amount is still large. Further, since the nozzle portion 29 is driven by the manipulator 25, a complicated movement is possible, but when the manipulator 25 control device is included, the manufacturing cost is high, and the weight and volume are large. .

The present invention has been made in view of the above circumstances, and it is possible to sufficiently improve the picking accuracy, minimize the picking amount, and reduce the backfill material and the backfilling man-hour. It is an object of the present invention to provide a concrete picking device which can be controlled, is simple, lightweight, compact, and easy to handle and maintain.

[0011]

The invention according to claim 1 is
Supports the traveling carriage in a cantilevered state across the width of the traveling carriage
Attached to the shaft that is installed on the front and back of the shaft
A guide rail that is movable in any direction, a blast head that is provided so as to be movable along the guide rail, a pumping means that pumps a blast material to the blast head, and the blast head that is driven along the guide rail. A drive mechanism is provided, and the blast head has a nozzle for injecting the blast material pressure-fed by the pressure-feeding means, a cover for covering the upper and side portions of the nozzle, and both of the cover .
Duct pipe that is attached to each person and that sucks and collects the blast material injected from the nozzle and the concrete powder that is generated, and a cover that covers the nozzle and the upper part of the nozzle
And a support mechanism that supports the nozzle so as to be tiltable with respect to the cover that covers the side of the nozzle.
Cover for covering the upper portion of the Le is, tilting the support mechanism as a rotation axis
Characterized in that it.

A concrete picking apparatus according to a second aspect of the present invention is the concrete picking apparatus according to the first aspect, wherein the duct pipe is located in an imaginary plane intersecting with an inclination axis of the support mechanism. It is characterized by

A concrete picking apparatus according to a third aspect of the present invention is the concrete picking apparatus according to the first or second aspect, wherein the air intake valve for suppressing negative pressure inside the cover is the cover. It is provided in.

[0014]

According to the concrete picking apparatus of claim 1, the blast head is moved along the guide rail by the drive mechanism while the blast material is pressure-fed by the pressure feeding means and jetted from the nozzle toward the concrete floor surface. , Grooves are formed on the concrete floor by the injected blast material.

At this time, the sprayed blast material and the generated concrete powder are prevented from scattering by the cover covering the upper and side portions of the nozzle, and the dust is attached to each of them. It is aspirated and collected by the ktopipe. Also, the nozzle and
Efficiently and accurately scrape the blasting material sprayed from the nozzle by inclining the cover that covers the upper part of the nozzle with respect to the cover that covers the side of the nozzle, and spraying the blast material obliquely to the concrete floor surface. You can

According to the concrete picking device of the second aspect, since the duct pipe is located in the virtual plane intersecting the tilt axis of the support mechanism, as a result, the duct pipe is located laterally of the nozzle. As a result, the blast material injected from the nozzle and the generated concrete powder can be reliably sucked and collected.

According to the concrete picking apparatus of the third aspect, since the cover is provided with the air intake valve, the pressure in the cover is prevented from becoming a negative pressure.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION A concrete picking device of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the concrete picking device 30 includes a traveling carriage 31, a guide rail 32 attached to the traveling carriage 31, and a blasting provided so as to be movable along the guide rail 32. A head 33, a pressure feed means (blast machine) 34 for pressure-feeding a blast material (for example, a steel grid or sandblast) to the blast head 33, and a drive mechanism 35 for driving the blast head 33 along the guide rail 32. It is configured roughly.

The blast machine 34 includes the upper structure 3
4a and a lower structure 34b, and a duct pipe 36 attached to the blast head 33 is connected to the upper structure 34a. Upper structure 34
In a, a cyclone device (not shown) connected to the duct pipe 36 and a cleaner tank (not shown) with a filter are provided. On the other hand, the lower structure 3
A blast tank (not shown) for storing the blast material is provided at 4b, and a blast hose connected to the nozzle of the blast head 33 is attached to this blast tank. In addition, the blast tank has
A compressor (not shown) with a dryer for pumping the blast material is connected. The blast tank and the cleaner tank are connected to each other,
The blast material separated in the cleaner tank is introduced into the blast tank. In the figure, 37 is a blower, 38 is a caster for moving the traveling carriage 31, and 39 is a pedal lock for fixing the traveling carriage 31 at a predetermined position.

As shown in FIG. 3 or 4, the traveling carriage 31
Two bearing portions 40 are fixed in the width direction, and the shaft 41 or 42 is supported by each bearing portion 40 in a cantilever state. The shaft 41 has a circular outer shape, and is inserted into a bearing member 43 fixed to the upper surface of the guide rail 32 by a mounting bolt 47.
The bearing member 43 is provided with a lock knob 44 that fixes the shaft 41 and the bearing member 43 so that they cannot be displaced relative to each other. Further, the shaft 42 has a shape in which a screw is formed on the outer surface, and the guide rail 3
Bearing member 4 fixed to the upper surface of 2 by a mounting bolt 48
6 is screwed together. A handle 45 for rotating the shaft 42 around the axis is fixed to the tip of the shaft 42.

On the upper surface of the guide rail 32 between the bearing members 43 and 46, a drive motor 50, which constitutes a part of the drive mechanism 35, and a gear 51 fixed to the rotary shaft of the drive motor. The gear 53, which is provided on the same plane and laterally with respect to the gear 51, and the gears 51, 5
Sprockets 54, 5 coaxially fixed to each of the three
5 and a chain 52 connecting these sprockets 54 and 55 are attached. The guide rail 3
A window portion is formed at a position corresponding to the two gears 51 and 53, and a part of the gears 51 and 53 is inserted inside.

A horizontal frame 60 is provided inside the guide rail 32 so as to be movable in the longitudinal direction of the guide rail 32, and the horizontal frame 60 has the gears 51 and 53.
A rack 61 that meshes with is fixed. Guide plates 62 are fixed to both sides of the horizontal frame 60.
The guide plate 62 has a groove 6 in which a roller 63 fixed to the guide rail 32 is slidably and rotatably housed.
2a is formed. A bracket 65 is fixed to the lower surface of the horizontal frame 60, and a mounting plate 67 to which the blast head 33 is mounted is connected to the bracket 65 via a parallel link 66. Reference numeral 68 in the drawing denotes a lock piece that prevents the parallel link 66 from being displaced during transfer.

The blast head 3 is attached to the mounting plate 67.
3 is attached. As shown in FIGS. 5 and 6, the blast head 33 includes a nozzle 70 for injecting the blast material pressure-fed by the pressure-feeding means 34, and the nozzle 7.
The covers 71 and 72 for covering the upper part and the side of 0, the duct pipes 73 and 74 attached to the cover 71 for sucking and collecting the blast material and the concrete powder generated from the nozzle 70, and the nozzle 70. A support mechanism (bolt) that supports the cover 72 so as to be tiltable.
And 75 are provided.

The cover 71 has a double pipe structure, the nozzle 70 is provided inside the inner pipe 71a, and the space between the inner pipe 71a and the outer pipe 71b communicates with the duct pipe 73. ing. At both ends of the cover 72,
The duct pipe 74 is attached with its tip opening communicating with the inside of the cover 72. The cover 7
A plurality of through holes 72a are provided side by side in the lateral direction on the side surface of No. 2, and the shielding plate 7 is provided inside the through holes 72a.
6 is swingably supported by a pin 77, and in a normal state, is hung substantially vertically to close the through hole 72a. A leaf spring 78 is interposed between the shield plate 76 and the outer tube 71b of the cover 71, and biases the shield plate 76 in the direction of closing the through hole 72a. Here, the through hole 72a, the shielding plate 76, and the plate spring 78 constitute the air intake valve of the present invention. In addition, 79 in FIG. 3 is a wheel attached to the cover 79.

Next, the operation of the concrete picking device of this embodiment will be described.

First, the concrete picking device 30 is moved to a position where the groove for installing the door is picked up by using the caster 38 provided on the traveling carriage 31. The position is adjusted so that the length direction of the guide rail 32 of the concrete picking device 30 is parallel to the marking line of the groove, and the concrete picking device 30 is installed by the pedal lock 39 so as not to move.

Next, the handle 45 fixed to the tip of the shaft 42 is rotated to move the guide rail 32 back and forth to adjust the position of the nozzle 70 of the blast head 33 to the position corresponding to the scribing line. To do. After the adjustment, the lock knob 44 is twisted and fixed so that the position of the guide rail 32 does not move.

Next, the compressor of the pressure feeding means 34 is driven to move the blast material to the nozzle 70 of the blast head 33.
Supply to. As a result, the blast material is sprayed onto the concrete floor surface, the floor surface is scraped, and the groove M is accurately formed.

Next, the drive motor 50 is driven to drive the gear 51.
And 53 are rotated. As a result, the rack 61 meshed with the gears 51 and 53 is moved in the length direction of the guide rail 32, and the horizontal frame 60 is moved in the length direction of the guide rail 32. Therefore, the blast head 32 connected to the horizontal frame 60 moves along the length direction of the guide rail 32, whereby the groove M parallel to the guide rail 32 is formed. The blast material injected from the duct pipes 73 and 74 and the generated concrete powder are sucked and collected in the upper structure 34a of the pressure feeding means 34. Concrete powder is separated from the recovered blast material, and the separated blast material is supplied to the lower structure 34b of the pumping means 34.

Here, the support mechanism (bolt) 75 is loosened, and the cover 71 is moved to the support mechanism 75 as shown in FIG.
Inclining around the rotation axis of
It is preferable in terms of work accuracy. In this case, the tilt direction is
The blast material is sprayed on the floor surface preceding the moving direction of the blast head 70. In this case, the injected blast material and the generated concrete powder are the duct pipe 73 communicating with the space between the inner pipe 71a and the outer pipe 71b of the cover 71 and the duct pipes arranged before and after the cover 71 in the traveling direction. 74 is efficiently sucked.

On the other hand, the amount of air injected from the nozzle 70,
The balance between the amount of air discharged from the duct pipes 73 and 74 and the amount of air entering from the groove M causes the covers 71 and 7
The pressure in 2 may be a negative pressure. In this case, the shielding plate 76 moves to the side where the through hole 72a is opened against the biasing force of the leaf spring 78, the insides of the covers 71, 72 communicate with the outside air through the through hole 72a, and the cover 71, The negative pressure state in 72 is eliminated.

FIG. 7 shows a concrete picking device according to another embodiment of the present invention, in which the guide rail 32 is provided with a traveling carriage 3.
The guide rail 32 is mounted on the concrete floor so that the blast head 33 can be moved along the guide rail 32. As shown in FIG. 8, the blast head 33 may be moved with the guide rail 32 separated from the floor surface.

[0034]

As described above, according to the concrete picking apparatus of the present invention, the traveling carriage and the width of the traveling carriage are provided.
Mounted on a shaft supported in a cantilevered direction
A guide rail movable in the front-rear direction of the shaft, a blast head movably provided along the guide rail, a pressure feeding means for feeding a blast material to the blast head, and the blast head for guiding the blast head. A driving mechanism for driving along a rail, wherein the blast head has a nozzle for injecting the blast material pressure-fed by the pressure-feeding means, a cover for covering the upper and side portions of the nozzle, and both of the covers . Attached to the duct, which sucks and collects the blast material injected from the nozzle and the concrete powder generated, and the nozzle and nozzle.
A support mechanism is provided for supporting the cover for covering the upper part of the nozzle so as to be tiltable with respect to the cover for covering the side of the nozzle .
The nozzle and the cover that covers the top of the nozzle
Since the mechanism is tilted around the rotation axis, the following effects are achieved.

That is, while the blast material is pressure-fed by the pressure-feeding means and jetted from the nozzle toward the concrete floor surface, the blast head is moved along the guide rail by the drive mechanism, and the blast material jetted onto the concrete floor surface. Grooves can be formed.

The blast material and the concrete powder sprayed at this time can be prevented from scattering by a cover that covers the upper and lateral sides of the nozzle, and they are attached to each of them.
It can be sucked and collected by the duct pipe.

The cover for covering the nozzle and the upper part of the nozzle is also provided.
If the blast material is inclined with respect to the cover that covers the side of the nozzle and the blast material injected from the nozzle is injected obliquely to the concrete floor surface, efficient and accurate scraping can be performed.

Therefore, the picking accuracy can be sufficiently increased, the picking amount can be minimized, and the backfill material and the backfilling man-hour can be reduced.

On the other hand, the control device is simple, lightweight and compact, and handling and maintenance can be facilitated.

According to the concrete picking apparatus of the second aspect of the present invention, since the duct pipe is located in the virtual plane intersecting the tilt axis of the support mechanism, the duct pipe is located at the side of the nozzle. As a result, the blast material sprayed from the nozzle and the concrete powder generated will be reliably sucked in.
Can be collected.

According to the concrete picking apparatus of the third aspect of the present invention, since the cover is provided with the air intake valve, it is possible to prevent the pressure in the cover from becoming a negative pressure.

[Brief description of drawings]

FIG. 1 is a side view showing a concrete picking device according to an embodiment of the present invention.

FIG. 2 is a front view showing the concrete picking device according to the embodiment of the present invention.

FIG. 3 is an enlarged view of a part of FIG.

FIG. 4 is an enlarged view of a part of FIG.

FIG. 5 is an enlarged cross-sectional view of a part of FIG.

FIG. 6 is an enlarged cross-sectional view of a part of FIG.

FIG. 7 is a view showing a concrete picking device according to another embodiment of the present invention.

FIG. 8 is a view showing a concrete picking device according to still another embodiment of the present invention.

FIG. 9 is a view showing a conventional concrete picking device.

FIG. 10 is a view showing a floor surface on which conventional scrubbing work has been performed.

11 is a partial cross-sectional view of FIG.

FIG. 12 is a view showing a construction state of a conventional door.

[Explanation of symbols]

31 traveling trolley 32 Guide rail 33 Blast head 34 pumping means 35 Drive mechanism 70 nozzles 71,72 cover 72a Through hole (air intake valve) 73,74 Duct pipe 75 Support mechanism 76 Shield (Air intake valve) 78 Leaf spring (air intake valve)

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-108663 (JP, A) JP-A-8-25221 (JP, A) JP-A-4-87770 (JP, A) JP-A-5- 171821 (JP, A) Actual Kaihei 2-135164 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E04G 23 / 08,21 / 00-21/10 E04F 21/00 B24C 3/06, 5/02, 5/04

Claims (3)

(57) [Claims] 1. A traveling carriage and a piece in the width direction of the traveling carriage.
Attached to a shaft that is supported in a holding state,
A guide rail that is movable in the front-rear direction of the shaft, a blast head that is provided so as to be movable along the guide rail, a pressure-feeding unit that feeds a blast material to the blast head, and the blast head along the guide rail. And a drive mechanism for driving the blast head, wherein the blast head has nozzles for injecting the blast material pressure-fed by the pressure-feeding means, a cover for covering the upper and lateral sides of the nozzle, and a cover attached to each of the covers. The duct pipe for sucking and collecting the blast material injected from the nozzle and the generated concrete powder, and the cover for covering the nozzle and the upper portion of the nozzle are provided on the side of the nozzle.
And it provided a support mechanism for tiltably supported with respect to the cover over the cover for covering the upper portion of the nozzle and nozzle support mechanism
A concrete picking device characterized by tilting around the axis of rotation . 2. The concrete picking device according to claim 1, wherein the duct pipe is located in an imaginary plane intersecting with an inclination axis of the support mechanism. 3. The concrete picking apparatus according to claim 1, wherein the cover is provided with an air intake valve that suppresses a negative pressure in the cover.