JP2010209677A - Leveling trowel device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a leveling trowel device of a simple structure capable of easily leveling a pavement material such as asphalt or the like even by an unskilled person, and capable of obtaining a finishing surface high in quality with flatness and high density at low cost. <P>SOLUTION: The leveling trowel device 30 for leveling a surface of the pavement material while moving has a trowel body 310 having a contact surface for contacting with the surface of the pavement material and an oscillation-support means 320 for swingingly supporting the trowel body 310. A heating means for always heating at least the contact part with the pavement material may be provided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a leveling iron device that moves and smoothes the surface of a paving material such as asphalt or concrete.

For example, after burying pipes such as gas pipes, water pipes, sewage pipes, telephone lines, etc. in the groove formed on the road, sand, earth and sand, crushed stones are put in the groove, and the pipe body is backfilled, The road surface is restored by laying paving materials such as asphalt.
FIG. 10 is a schematic diagram for explaining the procedure of the road surface restoration work as described above, and is a front view in which a road is cut in a direction perpendicular to the groove. First, as shown in FIG. 10 (a), the ground surface (road) 1 is excavated and trimmed to form a groove 1a, and the pipe body 2 is disposed at the bottom of the groove 1a. Thereafter, as shown in FIG. 10 (b), the crushed stone 3 is put into the groove 1 a to embed the tube body 2. As shown in FIG. 10 (c), after rolling the crushed stone 3, as shown in FIG. 10 (d), the surface of the crushed stone 3 is excavated and trimmed to form a groove 3a having a predetermined depth.

  And as shown in FIG.10 (e), the asphalt 4 which is a pavement material is thrown into this groove | channel 3a, and the asphalt 4 is leveled in cross-sectional trapezoid shape with the height secured previously from the ground surface. Finally, using a roller or the like, rolling is performed until the surface of the asphalt 4 becomes the same height as the ground surface 1 as shown in FIG.

By the way, Patent Document 1 proposes a work machine such as a power excavator that enables excavation and leveling of a groove by using a drainage plate that is narrower than between the crawler belts.
The technique described in this document can greatly reduce the work load and work time for trench excavation / correction, and is a prominent proposal.
However, even in the work machine described in Patent Document 1, it is the present situation that the surface of the paving material such as asphalt is leveled manually, and even a skilled person can finish the surface of the paving material to a high degree. It is not easy, it takes time and effort, and there is a cost problem.

In addition, the paving unit finisher described in Patent Document 2 is capable of entering a small and narrow place and performing fine paving work. According to this work machine, asphalt leveling work is performed. Can be automated.
However, the dedicated work machine described in this document is large and expensive, and there is a problem that the cost increases when used for a small-scale road restoration work.
JP-A-9-177119 JP 2002-47612 A

  The present invention has been made in view of the above problems, and the surface of a pavement material such as asphalt or concrete can be leveled easily and flatly even without an expert, and the finish is also high quality and cost-effective. The purpose is to provide a leveling iron device that is superior to the above.

In order to solve the above-mentioned problem, the invention according to claim 1 is a leveling iron device for leveling the surface of the paving material while moving, and the iron provided with a contact surface that contacts the surface of the paving material. It has a main body and swing support means for swingably supporting the iron body. The iron body is composed of a plurality of divided bodies divided in the width direction, and the inclination angle of each of the divided bodies can be adjusted. It is as a structure provided with the connection means connected to.
By doing so, it becomes possible to level the surface of the pavement material to a plurality of surfaces having different inclinations, and it is also possible to level such a surface in one operation.
In this case, as described in claim 2, the connecting means may use an elastic member such as a spring or rubber so as to elastically connect the plurality of divided bodies.

  In the leveling iron apparatus of this invention, you may provide the heating means which heats the contact part of a contact surface and the said pavement material. By doing so, the surface of the pavement can be leveled evenly and comfortably with the contact surface heated with the swinging of the iron body. As the heating means, a burner, an electric heater, ignited charcoal, or the like can be used, but also includes a fuel gas such as LPG in addition to a heating gas such as exhaust gas from a traveling body.

  When heating gas or fuel gas is used, as described in claim 3, it is a leveling iron device for leveling the surface of the pavement while moving, and has a contact surface that contacts the surface of the pavement. And a heating support means for heating a contact portion between the contact surface and the paving material, the heating means including a gas supply pipe, The supply pipe may be swingably attached to the iron body, and the nozzle may be provided on the supply pipe to inject flame or heated gas toward the contact portion.

When the gas supplied to the supply pipe is a heated gas, the heated gas is jetted from the nozzle to the contact part. When the gas supplied to the supply pipe is a fuel gas, the nozzle is supplied to the contact part. A fire flame is emitted.
If the exhaust gas of the traveling body to which the leveling iron device is attached is used, the exhaust gas of the traveling body can be effectively used and the heating cost can be reduced.

  In addition, in this invention, as described in Claim 5, it is good to provide the height adjustment means which adjusts the height position of a iron main body according to the height position of the surface of the said pavement material. By providing such a height adjusting means, for example, when the leveling iron device is not used, the iron main body can be separated from the surface of the pavement material. In addition, when using a leveling iron device, the pressing force of the iron body against the pavement can be made constant, and the pressing force can be adjusted up or down.

  According to the present invention, even a non-expert can easily and evenly level the surface of a pavement in a short time. In addition, the iron body is composed of a plurality of divided bodies, and each divided body is connected by a connecting member, so that complex paved surfaces with multiple inclined surfaces can be easily and high quality in a short time by performing a single leveling operation. Can be done. Furthermore, since the leveling iron device of the present invention has a simple configuration, the device price is low, it can be easily attached to a traveling body such as a power shovel, and the cost of leveling work can be greatly reduced.

Preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing an example of use of the leveling iron device of the present invention.
As shown in FIG. 1, the leveling iron device 30 can be attached to, for example, a power shovel 20 that is a traveling body.
A power shovel 20 shown in FIG. 1 is generally used for road construction, pipe construction, and the like, and includes a bucket 23 that can be moved by an arm 24 and a soil discharge plate 21 that can be turned up and down by an arm 22. It has. In the example shown in FIG. 1, the road surface restoration device 10 is attached to the earth discharging plate 21. The road surface restoration device 10 excavates and corrects the surface of a crushed stone in which a pipe or the like is embedded to form a groove 3a having a predetermined depth, and leveles the pavement material at a predetermined height in the groove 3a. It is.

  The road surface restoration device 10 shown in the figure is disclosed by Japanese Patent No. 4204012 by the applicant of the present application, and a board 10a attached to the earth discharging board 21 and a scraping board attached to the board 10a so that the height position can be adjusted. 11, a pair of side plates 12, 12 attached to the substrate 10a and disposed on both sides of the scraping plate 11, and side surfaces of asphalt that are detachably attached to opposite surfaces of the side plates 12, 12 with bolts or the like (The other side plate 12 does not appear in the figure), and the side plates 12 and 12 are attached to the lower ends of the side plates 12 and 12 and have sled-like skids 13 and 13 in contact with the ground surface 1.

  The leveling iron device 30 of the present invention can be used together with such a road surface restoration device 10 to complete a series of steps necessary for road surface restoration in a short time with a single device and a small number of personnel. it can. In addition, as another road surface restoration | recovery apparatus which can be used with the leveling iron apparatus 30 of this invention, what was described in said patent document 1 can be mentioned, for example.

Next, an embodiment of the leveling iron device 30 of the present invention will be described with reference to FIG.
2A and 2B relate to a first embodiment of the leveling iron device of the present invention, in which FIG. 2A is a perspective view for explaining the overall configuration, and FIG. 2B is a diagram for explaining the operation of the leveling iron device.

The leveling iron device 30 includes a iron body 310 that smoothly finishes the surface of the asphalt while heating, and the frame or arm 22 of the traveling body (for example, the power shovel 20 in FIG. 1) that can adjust the position of the iron body 310 freely. And a mounting portion 320 attached to the head.
The iron body 310 is formed as a contact surface that contacts the asphalt and smoothes the asphalt. For heating the contact portion between the asphalt and the contact surface, a burner, an electric heater, ignited charcoal, or the like can be used.
In the leveling iron device 30 of this embodiment, the iron body 310 is divided into two left and right divided bodies 311 and 312, and the divided bodies 311 and 312 are connected by a connection fitting 313 whose connection angle can be adjusted. ing.

FIG. 2B is a partially enlarged view for explaining an example of the connection fitting 313.
L-shaped connection fittings 313 are arranged back to back at corresponding positions of the divided bodies 311 and 312 and are fixed by welding or the like. An angle adjusting wedge 314 for adjusting the angle of the divided bodies 311 and 312 is inserted between the divided bodies 311 and 312. The angle adjusting wedge 314 may be a rigid body such as a metal, but may be an elastic body such as rubber.

  The connection angle of the divided bodies 311 and 312 is made to coincide with the inclination angle of the leveling surface of the asphalt 4. FIG. 8 shows various forms of asphalt 4 that can be leveled by the leveling iron device 30 of the present invention. Asphalt having an inclined surface as shown in FIGS. The connection angle of the divided bodies 311 and 312 is adjusted in accordance with the angles of the four horizontal surfaces 4a and the inclined surfaces 4b. This adjustment is performed by inserting the angle adjusting wedge 314 and then screwing and tightening a nut 316 to one end of the bolt 315 through which the connecting fittings 313 and 313 and the angle adjusting wedge 314 are inserted. The divided bodies 311 and 312 are set to an angle corresponding to the taper angle of the angle adjusting wedge 314, that is, an angle that matches the inclination angle of the leveling surface of the asphalt 4.

Of course, as long as the connection angle of the divided bodies 311 and 312 can be adjusted, the configuration of the connection fitting is not limited to the one described above.
FIG. 3 is a diagram for explaining another configuration of the connecting metal fitting.
In this connection fitting, a spring 317 is interposed between the head of the bolt 315 and the connection fitting 313 and between the nut 316 and the connection fitting 313 instead of the angle adjusting wedge 314. Therefore, the angles of the divided bodies 311 and 312 can be elastically changed by the biasing force of the springs 317 and 317.

The attachment part 320 for attaching the leveling iron device 30 to the frame or arm of the traveling body has a base 321 attached to the iron body 310, a tip movably supported by the base 321 and does not move forward and backward in the axial direction. A helical shaft 322, a nut 323 screwed with the helical shaft 322, a bracket 324 for attaching the nut 323 to the frame or arm of the traveling body, a base 321 and a relative position of the nut 323. And a cylindrical guide 325 for guiding the lifting operation.
The attachment portion 320 may be provided only on one of the divided bodies (for example, the divided body 311), or may be provided on both of the divided bodies 311 and 312.

The upper end of the spiral shaft 322 is bent in a substantially horizontal direction, and a handle 322a for manually rotating the spiral shaft 322 is formed.
A groove 325a through which a bracket 324 integrally attached to the nut 323 is inserted is formed on the side surface of the guide 325 from the upper end to the lower end.
The guide 325 and the base 321 are attached so that the guide 325 can swing with respect to the base 321. For example, as shown in FIG. 2, a pin 321a erected on the base 321 is inserted into a through hole of a flange 325b formed at the lower end of the guide 325, and a retaining pin 321b is engaged with a pin 321a protruding from the flange 325b. May be combined.

  Further, as shown in FIG. 4, a ball 327 is interposed between the flange 325b and the base 321 so that the flange 325b is slightly lifted from the surface of the base 321 by the ball 327, and the flange 325b and the base 321 are connected. The flange 325b may be pressed against the ball 327 by connecting with the bolt 321c and interposing a spring 321d between the head of the bolt 321c and the flange 325b. By doing so, the flange 325b and the base 321 are relatively swung along the spherical surface of the ball 327.

The shape of the contact surface of the iron body 310 (divided bodies 311, 312) in contact with the asphalt 4 is such that the contact surface and the surface of the asphalt 4 are moved by the swinging of the divided bodies 311, 312 following the movement of the divided bodies 311, 312. The contact angle is made small.
For example, when the divided bodies 311 and 312 move in the direction of the arrow I, the divided bodies 311 and 312 rotate counterclockwise in the figure with the swing center Q as a fulcrum, and from the initial posture shown in FIG. The swinging posture shown in FIG. At this time, the contact points between the contact surfaces 311c and 312c of the divided bodies 311 and 312 and the asphalt 4 move from the position indicated by reference sign P1 to the position indicated by reference sign P2.
The shapes of the contact surfaces 311c and 312c are selected so that the tangent angle α2 at the contact point P2 after the swing is smaller than the contact angle α1 at the contact point P1 in the initial posture. As long as this condition is satisfied, the shape of the contact surfaces 311c and 312c may be an elliptical curved surface, or may be another curved surface with a gradually changing radius of curvature. Moreover, the shape which combined the curved surface and the plane may be sufficient.

When the handle 322a is rotated with the leveling iron device 30 attached to the frame or arm of the traveling body via the bracket 324, the iron body 310 is moved up and down by the action of the spiral shaft 322 and the nut 323.
The pressing point for pressing the iron body 310 against the leveling surface of the asphalt 4 is determined by the attachment position of the attachment portion 320 with respect to the iron body 310 and the attachment position of the attachment portion 320 with respect to the frame or arm of the traveling body. The iron body 310 is preferably pressed against the leveling surface of the asphalt 4 at an optimal pressing point.
Therefore, in the leveling iron device 30 of this embodiment, the attachment portion 320 is attached to the iron body 310 so that the position can be adjusted in the width direction. For example, as shown in the illustrated example, the base 321 of the attachment portion 320 is attached to the upper edge portion of the divided body 311 with a bolt 326, and the bolt 326 is extended along the elongated hole 311a formed in the upper edge portion. The tightening position can be adjusted.

The frame or arm of the traveling body is provided with a traveling body side bracket 328 having a long hole 328a parallel to the long hole 311a. The bracket 324 is attached to the traveling body side bracket 328 with a bolt or the like through which the long hole 328a is inserted. It can be attached.
By doing so, for example, as shown in FIGS. 8A to 8B, even if the width of the leveling surface of the asphalt 4 changes, the pressing point P1 of the horizontal surface 4a is changed according to this change. And the pressing point P2 of the inclined surface 4b can be moved to an optimal position.

  Further, when the leveling surface of the asphalt 4 has the horizontal surface 4a and the inclined surface 4b, the position of the boundary (inclination angle changing position T) between the horizontal surface 4a and the inclined surface 4b is, for example, from the position of FIG. When it changes to the position of FIG.8 (c), it is necessary to change the position of the press point P while changing the position of the boundary part of the division bodies 311 and 312 according to this change. Therefore, in this embodiment, the fixing position of the bracket 324 with respect to the traveling body or the like can be adjusted in the width direction. Thereby, the position adjustment of the width direction of the leveling iron device 30 and the position adjustment of the pressing point P1 of the horizontal surface 4a and the pressing point P2 of the inclined surface 4b are possible.

FIG. 6 is a perspective view showing the configuration according to the second embodiment of the leveling iron device of the present invention.
In this embodiment, the same parts and the same members as those of the previous embodiment are denoted by the same reference numerals, and the detailed description uses those of the previous embodiment.
In this embodiment, a heating means 330 that uses the exhaust gas of the traveling body is provided. The smoothing iron device of this embodiment uses the exhaust gas of the running body to reduce the energy cost for heating, while constantly blowing the exhaust gas to the standby smoothing iron device during standby. There is an advantage that the main body is maintained at a constant temperature and can be started immediately without preheating the leveling iron device when the asphalt leveling operation is started.

The heating means 330 is connected to an exhaust gas pipe or the like of the traveling body, and connects the connection pipe 331 that sends the exhaust gas to the leveling iron device, the gas pipe 333 disposed in the swing axis direction of the divided body 311, and the swing of the divided body 312. It has a gas pipe 334 arranged in the direction of the moving axis, a connecting pipe 331, a flexible joint 332 that connects the gas pipe 333 and the gas pipe 334.
In the gas pipe 333 and the gas pipe 334, a plurality of nozzles 333a and 334a for injecting exhaust gas toward the contact surface between the leveling iron device and the asphalt are provided at equal intervals. Although the gas pipe 333 and the gas pipe 334 are not shown in detail, the nozzles of the gas pipe 333 and the gas pipe 334 are suspended from the bases 321 and 321, respectively, even if the divided bodies 311 and 312 swing. 333a and 334a are always pointed vertically downward to heat the optimum position.
Note that the temperature of the exhaust gas injected from the nozzles 333a and 334a can be changed, for example, by changing the lengths of the connecting pipe 331, the gas pipes 333 and 334, or around the connecting pipe 331 and the gas pipes 333 and 334. Adjustments can be made by providing fins or heat insulating material, or increasing or decreasing the engine speed of the traveling body.

Further, one end of the gas pipe 333 and the gas pipe 334 protrudes from the side surfaces of the divided body 311 and the divided body 312, and arc-shaped through holes 311 b and 312 b are formed on the side surfaces of the divided body 311 and the divided body 312. The swinging of the gas pipe 333 and the gas pipe 334 with respect to the divided body 311 and the divided body 312 is not hindered.
As shown in the drawing, stoppers 333b and 334b for preventing the removal may be provided at one end of the gas pipe 333 and the gas pipe 334. Although not shown, a bearing may be provided at one end of the gas pipe 333 and the gas pipe 334 so that the one end can move smoothly in the through holes 311b and 312b.
With this configuration, as shown in FIGS. 7A and 7B, even if the divided body 311 and the divided body 312 swing, the nozzles 333a and 334a always keep the divided body 311 and the divided body 312 and the asphalt between Exhaust gas is sprayed toward the contact area.

FIG. 9 is a diagram for explaining the operation of the leveling iron device 30 configured as described above.
FIG. 9A shows the time of excavation / correction of the groove 3a. At the time of excavation and leveling of the groove 3 a, the leveling iron device 30 stands by behind the earth discharging plate 21. At this time, the iron body 310 of the leveling iron device 30 is preliminarily positioned at a position slightly higher than the ground surface 1 and lower than the height position of the lower edge of the scraper plate 11 when leveling the asphalt 4. It is.

FIG. 9B shows the leveling time of the asphalt 4. The asphalt 4 is leveled by the scraper board 11. The height position of the iron body 310 is set in advance to a height position at which the asphalt 4 is heated and pressurized to finish the surface smoothly. By operating the handle 322a to adjust the height position of the iron body 310, the degree of pressurization of the asphalt 4 by the iron body 310 can be increased or decreased.
As in this embodiment, by using the leveling iron device 30 of the present invention together with the road surface recovery device provided with the scraping board 11, the leveling of the asphalt 4 by the road surface recovery device and the leveling iron device 30 of the present invention. Smoothing and densification of the surface of the asphalt 4 can be performed simultaneously. Therefore, a dedicated process for finishing the surface of the asphalt 4 smoothly and precisely becomes unnecessary, and a high quality restoration road surface can be obtained at low cost.

Further, when the iron body 310 is moved forward while being pressed against the asphalt 4, an asphalt bulge is likely to be generated in front of the iron body 310, but the contact surface ( 311c and 312c (see FIG. 5) are formed as described above and are freely swingable, so that the occurrence of such bulging can be effectively suppressed and the pressurizing effect can be enhanced.
Further, if necessary, the iron body 310 may be reciprocated on the surface of the asphalt 4 by retreating the iron body 310 together with the traveling body.
If it is necessary to temporarily stop the leveling operation for some reason during the leveling of the asphalt 4, the iron body 310 is used to prevent excessive heating of the asphalt 4 by the leveling iron device 30. The heat source to be heated may be shut off or the handle 322a may be operated to raise the iron body 310 and move away from the asphalt 4. However, when using the exhaust gas of the traveling body as a heating source like the leveling iron device 30 of the second embodiment, the temperature of the exhaust gas can be made lower than the temperature at which the asphalt 4 is altered, so that Such an operation is not necessary.

Although the embodiment of the present invention has been described, the present invention is not limited to the above description.
For example, the leveling iron device 30 that smoothes the surface of the asphalt 4 is not limited to the above-described aspect, and may be various other aspects. For example, if only the surface of a flat pavement material without an inclination angle is to be finished, the leveling iron device 30 does not need to be divided into left and right parts, and it is not necessary to be able to adjust the connection angle. Further, if the surface of the paving material is always finished at a constant height, a height adjusting mechanism is not particularly required.

Further, in the above description, the iron body 310 of the leveling iron device 30 is described as being divided into two parts, but it may be divided into three parts or more.
Further, when the iron body 310 is divided into two or more as in the leveling iron device 30 described in the above embodiment, the attachment portions 320 are respectively attached to the divided bodies (the divided bodies 311 and 312 in the above embodiment). May be provided so as to be swingable. By doing in this way, there exists an advantage that press point P1, P2, ... can be positioned in an optimal position in each of the division body (311,312).

Further, when the pavement material is asphalt, it is necessary to heat at least the contact portion by the heating means. However, when leveling the surface of the pavement material such as concrete, it is not necessary to provide the heating means.
Furthermore, in the second embodiment, the exhaust gas has been described as an example of the heating gas. However, other heating gas may be used, and a fuel gas such as LP gas can be supplied instead of the exhaust gas. is there. In this case, a flame is emitted from the nozzle 333a toward the contact portion.
In the above description, one leveling iron device 30 is attached to the front of the traveling body (power shovel 20). However, for example, the iron device 30 may be attached to the rear of the traveling body. Alternatively, a plurality of leveling iron devices 30 may be attached to the rear, and the surface of the pavement material may be leveled with the plurality of leveling iron devices 30.

  The leveling iron device of the present invention is not limited to the road surface restoration device having the above-described configuration, but can be applied to other road surface restoration devices. Further, the leveling iron device of the present invention is not limited to the case where the iron body is moved along with the movement of the traveling body and the swing support means formed in a handle shape or an arm shape is provided by the operator. The present invention is also applicable when the operator grips and moves the iron body manually.

It is a side view which shows an example which attached the leveling iron apparatus of this embodiment to the arm of the power shovel which is a traveling body. 1 is a perspective view for explaining the overall configuration of the leveling iron device according to the embodiment of the present invention, and (b) is an enlarged sectional view for explaining the details of a connecting portion. It is a figure explaining the other structure of a connection metal fitting. It is sectional drawing of the principal part which shows an example of the structure which interposed the ball between the flange and the base, and made the flange rockable | fluctuated with respect to the base. It is a side view explaining the shape of the contact surface of a iron main body. It is a perspective view concerning 2nd embodiment of the leveling iron apparatus of the present invention, and showing the composition. It is a figure explaining a mode that exhaust gas is always sprayed toward a contact part of a division object and asphalt from a nozzle, even when a division object rocks. It is a figure which shows the various forms of asphalt which can perform a leveling operation | work with the leveling iron apparatus of this invention. It is a figure explaining the effect | action of a leveling iron apparatus, (a) has shown the state at the time of excavation and leveling, (b) has shown the state at the time of asphalt leveling. It is a figure explaining the work procedure of road restoration after performing construction, such as a gas pipe, a water pipe, a sewer pipe, and a telephone line.

1 Ground surface (road surface)
2 Tube 3 Crushed stone 3a Groove 4 Asphalt (paving material)
DESCRIPTION OF SYMBOLS 10 Road surface restoration apparatus 10a Board | substrate 11 Scraping board 12 Side board 13 Skid 14 Molding member 21 Discharge board 22 Arm 30 Leveling iron apparatus 310 Iron body 311a, 312a Long hole 311b, 312b Through-hole 311c, 312c Contact surface 320 Attachment part 321 Base 330 heating means

Claims (5)

A leveling iron device that smoothes the surface of the pavement while moving,
A trowel body provided with a contact surface in contact with the surface of the paving material;
Swing support means for swingably supporting the iron body,
The iron body is composed of a plurality of divided bodies divided in the width direction, and includes connecting means for connecting the divided bodies so that the inclination angle can be adjusted.
A leveling iron device characterized by The leveling iron device according to claim 2, wherein the connecting means includes an elastic member that elastically connects the plurality of divided bodies. A leveling iron device that smoothes the surface of the pavement while moving,
A trowel body provided with a contact surface in contact with the surface of the paving material;
Swing support means for swingably supporting the iron body, and heating means for heating a contact portion between the contact surface and the pavement,
The heating means includes a gas supply pipe, swing means for swingably attaching the supply pipe to the iron body, and a nozzle that is provided in the supply pipe and injects flame or heating gas toward the contact portion. With
A leveling iron device characterized by The leveling iron device according to claim 4, wherein the heating gas of the heating means is exhaust gas of a traveling body. 5. The position of the pressing point of the iron body relative to the surface of the pavement can be adjusted by making the mounting position of the swing support means relative to the iron body adjustable. 5. Leveling iron device.

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