JP2005262420A - Concrete chipping machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a concrete chipping machine for beautifully and uniformly finishing a chipping surface, reducing an unchipped part, and capable of efficiently chipping the chipping surface. <P>SOLUTION: This concrete chipping machine supports a water jet cutting device 29 for installing a support 23 of a rotatingly driving water jet nozzle 27 on a support beam 14 so as to be capable of traveling, in the rear of a traveling car body. The water jet cutting device 29 rockingly suspends and supports a rotational driving mechanism of the water jet nozzle 27 from the support. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a concrete chipping machine that performs cleaning, chipping, polishing, and the like by a water jet that is ultra-high pressure water jet.

  The water jet is a technology that applies a very high pressure to the water and destroys the opponent that hits it when it is jetted, and a special pump that generates ultra-high pressure in the water and the jet speed by narrowing the water flow to increase the breaking force And a holding / moving mechanism that reliably holds the nozzle against the reaction force of the jet and moves the nozzle to an appropriate position relative to the concrete surface that is the workpiece.

  As such a water jet, there is a water jet machine in which a water jet nozzle is provided at the rear of a traveling vehicle body equipped with a traveling mechanism by wheels or crawler belts, and this water jet is jetted while traveling. In the X direction, a water jet nozzle holding / moving mechanism is provided at the rear portion of the traveling vehicle body in order to obtain a working range in the Y direction perpendicular to the X direction.

  Such a water jet nozzle holding / moving mechanism is provided with a support beam having a rail projecting in the width direction of the rear part of the traveling vehicle body, and the support beam travels on a water jet nozzle support having a roller that slides on the rail. It is attached as possible. Conventionally, the operation of the water jet nozzle is known to perform the rotation operation independently.

  For example, in the following patent document, the following concrete chipping machine has been proposed. As shown in FIGS. 15 and 16, a crawler type traveling vehicle body 1 having a rubber crawler belt 1 a is added to a diesel engine 2, a radiator / oil cooler 3, a fuel tank, a traveling pump 8, a traveling hydraulic motor 5, and a traveling valve 6. In addition to the mechanisms necessary for traveling, etc., operating mechanisms such as a hydraulic oil tank 9, a work machine pump 10, and a work machine valve 11 are mounted. Further, as a driving operation mechanism, a steering lever right turn 12a, a steering lever left turn 12b, a clutch lever 12c, a brake lever 12d, and the like.

Japanese Patent Application Laid-Open No. 07-164393

  A link arm 13 having a parallelogram-shaped opposite side portion as a support arm is provided at the rear portion of the traveling vehicle body 1, and the support beam 14 is supported by the link arm 13. The lifting jack 15 is provided at a diagonal position of the link arm 13. The link arm 13 is arranged so that the support beam 14 can be moved up and down by changing its flat angle by extending and contracting the lifting jack 15.

  Further, an outrigger 22 provided with casters 21 is provided at the lower end of the outer end of the support beam 14, rails 18 a and 18 b are protruded along the length direction above and below the support beam 14, and a support 23 for the water jet nozzle 27. A sliding roller 24 as a double roller that travels on the rails 18a and 18b is provided on the upper and lower sides, and a support 23 is attached to the support beam 14 via the sliding roller 24 so as to be movable in the length direction.

  A rotating shaft tube 26 having a swivel 25 is provided on the support 23 so as to be driven to rotate by a nozzle rotation motor 28. The tip of the rotating shaft tube 26 located at the center is branched left and right, and beyond that. The water jet nozzles 27 are arranged at equal intervals on the circumference, and the periphery thereof is surrounded by a cylindrical hood 29a so that water, crushed stones, and cement are not scattered around.

  When the concrete chipping machine is used, the traveling vehicle body 1 travels. At the same time, the chain is moved by the hydraulic motor 34 to reciprocate the support 23 along the support beam 14, and the water jet nozzle 27 is rotated by the nozzle rotation motor 28. While driving, the concrete layer deteriorated by the jet water from the water jet nozzle 27 is suspended, washed and cleaned. According to this, by a rotation of the water jet nozzle 27 and a reciprocation of the support body 23, it is possible to perform a chip having a certain width.

  However, when the water jet nozzle 27 is rotated alone as described above, there is a problem that the finish is not smooth and the finished surface is not beautiful. For example, as shown in FIG. 17, a transverse line appears on the chip surface for each reciprocating pitch of the water jet nozzle 27, and the finished surface is not perfect.

  Moreover, as shown in FIG. 18 which is a conceptual diagram of the state of the chipped surface as seen from the side, the chip depth does not become constant due to the structure of the nozzle that performs the rotation operation, and a deep pit is generated particularly on the rear side. Has been found empirically. Further, when an obstacle such as a lower part of the reinforcing bar is matched, the angle of the water flow sprayed on the concrete surface is always constant, so that there is a problem that a chipping residue is likely to occur.

  Therefore, the inventors conducted an experiment to observe the finished surface by rotating the water jet nozzle instead of rotating it and performing a chipping operation. As a result, it was confirmed that in the swing operation, the nozzle operation speed was lower than that in the rotation operation, and a relatively smooth chipping surface was obtained. The capacity was about 30 (l / min), and it was found that the capacity was small and inefficient compared to the average capacity of 60 (l / min) when rotating.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a concrete chipping machine that eliminates the disadvantages of the above-mentioned conventional example, finishes the chipping surface beautifully and uniformly, reduces the number of chipping residues, and can chip the chip efficiently.

  In order to achieve the above object, the present invention provides a concrete chipping machine for supporting a water jet cutting device in which a support of a rotationally driven water jet nozzle is mounted on a beam so as to be able to travel on the rear side of the traveling vehicle body. The gist of the water jet cutting apparatus is that the rotational drive mechanism of the water jet nozzle is suspended from the support so as to be swingable.

  According to the first aspect of the present invention, since the rotation driving mechanism of the water jet nozzle is suspended from the support so as to be swingable, not only the rotation operation but also the swing operation can be added to the nozzle. As a result, a chip having a wider pitch width can be obtained than when the rotation operation and the swinging operation are performed independently, and the pitch width is overlapped, so that a uniform and smooth chip surface having no transverse stripes can be obtained.

  Further, by adding a swinging motion to the rotating motion, the angle of the water flow sprayed onto the concrete surface changes, and it is possible to leave without leaving the lower part of obstacles such as reinforcing bars. Furthermore, the capacity of water sprayed from the water jet nozzle can be maintained at a large capacity during the single rotation operation, and the working efficiency is good.

  The gist of the present invention is that it includes a swing drive mechanism that swings the rotational drive mechanism at least in the front-rear direction with respect to the support.

  According to the second aspect of the present invention, since the rotational drive mechanism of the water jet nozzle is swung at least in the front-rear direction with respect to the support body, the direction in which the support body reciprocates is intersected. The water jet nozzle will oscillate, and the reciprocating pitch widths of the water jet nozzle overlap, so that no transverse streak for each pitch appears on the chip surface.

  According to a third aspect of the present invention, the swing drive mechanism is configured by a swing motor coupled to the rotary drive mechanism and a crank mechanism that converts the rotational motion of the swing motor into a swing motion with respect to the support. Is a summary.

  According to the third aspect of the present invention, since the water jet nozzle is swung by the rotation of the motor and the cam mechanism, the swing driving mechanism can be easily realized.

  The concrete chipping machine according to the present invention can finish the chipping surface beautifully and uniformly and can efficiently cut the chipping surface.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view of an essential part showing an embodiment of a concrete chipping machine of the present invention, FIG. 2 is a right side view of the same as above, FIG. 3 is a front view of the same, FIG. 4 is a left side view of the same, and FIG. In the figure, reference numeral 1 denotes a crawler type traveling vehicle body having a rubber crawler belt 1a.

  This traveling vehicle body 1 has a mechanism necessary for traveling such as a diesel engine 2, an engine panel 2a, a radiator / oil cooler 3, a fuel tank 4, a precleaner 17a, an air cleaner 17, an exhaust muffler 18, a traveling pump 8 that is a hydraulic pump, and the like. In addition, an operating mechanism such as a hydraulic oil tank 9 is mounted, and a control panel 16 for performing various controls is provided that can be opened and closed by 90 ° from the traveling vehicle body 1. Further, a patrol light 19 that calls attention to the surroundings during work, a headlight 19 a Etc.

  The reason why the headlight 19a is provided at the front portion of the traveling vehicle body 1 is that the traveling vehicle body 1 is caused to travel forward so that the traveling vehicle body 1 does not travel on the chipped surface after the operation.

  A slide arm 20 that is rotatable in the lateral direction of the traveling vehicle body 1 is provided on the rear upper side of the traveling vehicle body 1, and a rotating disk 20 c is provided on the front end side of the front portion of the slide arm 20. The slide expansion / contraction mechanism of the slide arm 20 is formed by disposing a cylinder (not shown) inside a prismatic body that is fitted and slid.

  The connecting portion between the traveling vehicle body 1 and the slide arm 20 is provided with an upper turning motor 20a in which the slide arm 20 rotates relative to the traveling vehicle body 1 by the rotation, and the connecting portion between the slide arm 20 and the rotating disk 20c is provided at the connecting portion. Is provided with a lower turning motor 20b that rotates the turntable 20c relative to the slide arm 20 by rotation thereof. And the water jet cutting device 29 is attached to the front part of the turntable 20c via the multilink mentioned later.

  As shown in FIG. 1, a water jet cutting device 29 as an operation device includes a lateral reciprocating drive mechanism of the water jet nozzle 27, a rotation drive mechanism and a swing drive mechanism of the water jet nozzle 27.

  As shown in FIG. 6 and FIG. 7, the support beam 14 adopts a double tube structure of an inner tube 36 and an outer tube 37 as shown in FIGS. The inner tube 36 has a telescopic structure that slides left and right outward.

  The first and second rails 9 a and 9 b are juxtaposed in front of the support beam 14 along the length direction of the support beam 14, and the ends thereof are coupled to the flanges at the outer ends of the inner tubes 36. A sliding roller 24 as a double roller that runs on the rails 9a and 9b is provided above and below the support body 23 of the water jet nozzle 27, and the support body 23 is provided on the support beam 14 via the sliding roller 24 in the length direction thereof. Mount movably.

  The support 23 is pulled by a traverse chain 35 that is stretched between the left and right ends of the support beam 14 by a traverse motor that is a hydraulic motor 34. The chain 35 is endless and wound around a sprocket 36 a provided at the outer end of each inner tube 36, wound around a sprocket 36 b provided at the inner end of the inner tube 36, and then folded inside the outer tube 37. It is wound around the sprockets 37a provided on the outer ends of the sprockets 37a. In this way, even if each outer tube 37 moves to the left and right, the sprocket 37a always plays a role of absorbing the slack of the chain 35.

  Further, an auxiliary sprocket 37b is provided in the vicinity of the sprocket 37a, and the drive sprocket of the traverse motor 34 is pressed against the chain 35 between the sprockets 37a and 37b, so that power is reliably transmitted to the chain 35 in a state where the chain 35 is in tension. To do.

  Note that the sliding mechanism of the outer tube 37 with respect to the inner tube 36 of the support beam 14 may be manually operated or moved by a screw shaft. In this embodiment, the first rail 9a is moved. A telescopic hydraulic cylinder 38 is spanned between the first connecting portion 9c connecting the upper and lower sides and the second connecting portion 9d connecting the upper and lower portions of the second rail 9b and the left and right ends in the inner pipe 36.

  As shown in FIG. 1, the water jet nozzle 27 is provided with a chisel nozzle 27a at the tip of a rotating shaft tube 26, and the rotation drive mechanism of the water jet nozzle 27 includes a swivel 25 and a gear box. The nozzle 41 is rotationally driven by a nozzle rotation motor 28 that is a hydraulic motor through a gear in 41.

  The rotational drive mechanism is fixedly mounted on a holding plate 42b of a swing frame 42 (described later) suspended from the upper portion of the support 23.

  The swing frame 42 is configured by vertically forming a holding plate 42 b in front of a swing plate 42 a that is substantially parallel to the support 23, and the upper end of the swing plate 42 a is formed from the left and right ends of the upper portion of the support 23. It fixes to the rotating shaft 44 laid over the support piece 43 which protrudes ahead. In this state, the lower surface of the holding plate 42b is oriented horizontally with respect to the chip surface.

  Further, a swing motor 45 made of a hydraulic motor is fixed on the holding plate 42b, and the tip 45a of the rotating shaft projects from the bottom of the holding plate 42b, and the swing motor 45 rotates on the tip 45a of the swing motor 45. A crank 46 that changes its operation to a swinging motion in the front-rear direction with respect to the support 23 is engaged, and one end of the crank 46 is fixed to the support 23. Thus, the swing motor 45 and the crank 46 constitute a swing drive mechanism.

  Next, the structure of the multilink which connects the front part of the turntable 20c on the traveling vehicle body 1 side and the water jet cutting device 29 will be described. The multi-link 31 includes a lower link that is a left and right parallel link and a central top link, and a link cylinder 32 is provided above the left and right lower links.

Since all the multilinks 31 are constituted by pivotable link arms, a lateral rod 30 is further bridged between the rear portion of the rotating disk 20c on the traveling vehicle body 1 side and the waterjet cutting device 29, so that the waterjet cutting device 29 is provided. Is supported. In addition, the traveling vehicle body 1 is provided with an inclination sensor 33 that detects the inclination of the traveling vehicle body 1.
In addition, without providing the inclination sensor 33, it is possible to ensure parallelism to the floor with a free circuit of the link cylinder hydraulic pressure.

  Next, usage and operation will be described with reference to FIGS. When the traveling vehicle body 1 is moved to the work target position, if the crawler belt 1a of the traveling vehicle body 1 climbs on the step and the traveling vehicle body 1 is inclined, the inclination sensor 33 detects the inclination and sends a detection signal to a control unit (not shown). .

  The control unit calculates a deviation value that is a difference between a preset setting value and a detection value detected by the inclination sensor 33 so that the posture of the water jet cutting device 29 is set to a set posture. The cylinder 32 and the outrigger 22 are automatically expanded and contracted.

  As described above, if the inclination sensor 33 is not provided and the link cylinder hydraulic pressure free circuit ensures parallelism to the floor, the cylinder rod extends due to the hydraulic pressure set in advance in the link cylinder 32, and the outriggers. 22 presses the sliding surface and imitates the floor. By doing so, the water jet cutting device 29 takes a posture parallel to the floor.

  Since the water jet cutting device 29 does not follow the inclination of the traveling vehicle body 1 by using the link mechanism by the multi-link 31 and the lateral rod 30, the water jet cutting device 29 is automatically operated even when the traveling vehicle body 1 is inclined. The horizontal state can be secured. Note that it is more preferable to provide the control panel 16 with operation switches for operating the expansion and contraction of the link cylinder 32 and the outrigger 22 because the operator can further finely adjust the inclination of the water jet cutting device 29.

  Further, by rotating and sliding the slide arm 20 and rotating the turntable 20c, the water jet cutting device 29 is positioned along the inclined wall surface as shown in FIG. 10, or as shown in FIG. Even when it is positioned on the wall surface of the water jet, it is possible to support the load of the water jet cutting device 29 that cannot be supported by the multi-link 31 alone by the support using the lateral rod 30, and to stably support the water jet cutting device at a desired position. 29 can be positioned.

  Furthermore, in this case, by controlling not only the rotation / sliding operation of the slide arm 20 and the turntable 20c but also the expansion / contraction of the link cylinder, the water jet cutting device 29 can be more reliably along the inclination of the wall surface.

  Further, according to the support of the multi-link 31 and the lateral rod 30, the water jet cutting device 29 does not follow the inclination of the traveling vehicle body 1, while the chiseling operation is started and the traveling vehicle body 1 is moved to the arrow in FIG. When traveling in the direction, the lateral rod 30 reliably transmits the steering operation of the traveling vehicle body 1 to the water jet cutting device 29.

  When it is necessary to extend the support beam 14 for moving the support 23 of the water jet nozzle 27, the hydraulic cylinder 38 is extended and the inner tube 36 is slid left and right outward with respect to the outer tube 37. Move. In this extended state, as shown in FIG. 8, the first and second rails 9a and 9b move outward together with the inner tube 36, and are shifted to the left and right.

  On the other hand, the sliding roller 24 of the support 23 is a double roller, and both the rails 9a and 9b are engaged at the place where the first and second rails 9a and 9b are arranged. Since one of the double rollers engages with the rail even at the end where only this exists, the support 23 can move on the rail without any trouble.

  Next, the chipping operation will be described. The traveling vehicle body 1 is caused to travel, and at the same time, the chain 35 is moved by the hydraulic motor 34 to reciprocate the support 23 along the support beam 14. When the traveling vehicle body 1 travels, the support beam 14 is supported by an outrigger 22 with left and right casters 21.

  Next, when the swing motor 45 is rotated, the rotation operation is converted into a swing operation in the front-rear direction with respect to the support 23 by the crank 46, and the swing plate 42a swings about the center of the rotation shaft 44 as the swing center. To do. Accordingly, the rotational drive mechanism coupled to the swing motor 45 via the holding plate 42b also swings in the front-rear direction with respect to the support 23.

  Then, about 240 (MPa) of high-pressure water is supplied from the high-pressure water inlet 47 at 60 (l / min), the water jet nozzle 27 is driven to rotate by the nozzle rotation motor 28, and the water jet nozzle 27 is driven by the swing motor 45. While swinging and driving, jet water from the water jet nozzle 27 is sprayed at an angle of about 22 degrees to perform operations such as peeling and polishing of concrete.

  As shown in FIGS. 13 and 14, the chipped surface finished by performing the work in this way reciprocates in a direction perpendicular to the traveling direction of the traveling vehicle body 1 while the water jet nozzle 27 rotates. Since the swinging motion that swings in the traveling direction of the traveling vehicle body 1 is also added, the width of the reciprocating pitch is widened and overlapped, and the traversing line for each pitch does not appear on the chipping surface, and a uniform and smooth chipping surface can be finished. Also, when the chipping surface was observed, it was confirmed that the concrete below the rebar was cut.

It is a side view of the important section showing one embodiment of the concrete chipping machine of the present invention. It is the whole right side view showing one embodiment of the concrete chipping machine of the present invention. It is the whole front view which shows one Embodiment of the concrete chipping machine of this invention. 1 is an overall left side view showing an embodiment of a concrete chipping machine of the present invention. It is the whole top view showing one embodiment of the concrete chipping machine of the present invention. It is a front view of the reciprocating drive mechanism of the water jet nozzle of the concrete chipping machine of the present invention. It is a top view of the normal state of the reciprocating drive mechanism of the water jet nozzle of the concrete chipping machine of this invention. It is a top view of the state which expanded the width | variety of the reciprocating drive mechanism of the water jet nozzle of the concrete chipping machine of this invention. It is explanatory drawing from the back direction of the concrete chipping machine of this invention. It is a rear view which shows operation | movement of the concrete chipping machine of this invention. It is a rear view which shows another operation | movement of the concrete chipping machine of this invention. It is a top view which shows operation | movement of the concrete chipping machine of this invention. It is a front view of the chipped surface finished with the conventional apparatus. It is explanatory drawing of the chipped surface finished with the conventional apparatus. It is a side view which shows a prior art example. It is a top view which shows a prior art example. It is a front view of the chipped surface finished by the concrete chipping machine of the present invention. It is explanatory drawing of the chipping surface finished with the concrete chipping machine of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling body 1a Crawler belt 2 Diesel engine 2a Engine panel 3 Radiator oil cooler 4 Fuel tank 5 Traveling hydraulic motor 6 Traveling valve 8 Traveling pump 9 Hydraulic oil tank 9a, 9b Rail 9c, 9d Connection part 10 Working machine pump 11 Working machine valve 12a Steering lever right turn 12b Steering lever left turn 12c Clutch lever 12d Brake lever 13 Link arm 14 Support beam 15 Lifting jack 16 Control panel 17 Air cleaner 17a Pre-cleaner 18 Exhaust muffler 18a, 18b Rail 19 Patrite 19a Headlight 20 Slide arm 20a Upper turning motor 20b Lower turning motor 20c Turntable 21 Caster 22 Outrigger 23 Support 24 Slide roller 25 Swivel 26 Rotation Pipe 27 Water jet nozzle 27a Nozzle 28 Nozzle rotation motor 29 Water jet cutting device 29a Hood 30 Lateral rod 31 Multilink 32 Link cylinder 33 Inclination sensor 34 Hydraulic motor 35 Chain 36 Inner pipe 37 Outer pipe 36a, 36b, 37a, 37c Sprocket 38 Hydraulic cylinder 41 Gear box 42 Oscillating frame 42a Oscillating plate 42b Holding plate 43 Supporting piece 44 Rotating shaft 45 Oscillating motor 45a Tip 46 Crank 47 High pressure water inlet

Claims (3)

  In a concrete chipping machine that supports a water jet cutting device attached to a beam so that it can run on a rotating water jet nozzle support on the back of the vehicle body, the water jet cutting device uses a water jet nozzle rotation drive mechanism from the support. A concrete chiseling machine that swings in a swingable manner.   2. The concrete deburring machine according to claim 1, further comprising a swing drive mechanism that swings the rotary drive mechanism at least in the front-rear direction with respect to the support.   The concrete chipping machine according to claim 2, wherein the rocking drive mechanism includes a rocking motor coupled to the rotation driving mechanism and a cam mechanism that converts the rotational motion of the rocking motor into a rocking motion with respect to the support.

Images