JP5374323B2 - Roller sprinkler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller sprinkler which can properly adjust the amount of sprinkled water and reliably sprinkle water over the whole surface of a compaction roller. <P>SOLUTION: The roller sprinkler 10 sprinkles water onto the compaction roller 3 from a water sprinkling pipe 11 arranged in the axial direction of the compaction roller 3 through a plurality of sprinkling nozzles 12 to prevent asphalt pavement 2 from attaching to the compaction roller 3. The roller sprinkler 10 includes a water sprinkling amount adjusting means 20 adjusting the amount of the water sprinkled to the compaction roller 3, and an interval adjusting means 30 adjusting the interval L between the compaction roller 3 and the water sprinkling pipe 11. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a roller watering device that sprays water on a rolling roller in order to prevent adhesion of asphalt pavement to the rolling roller.

  In order to prevent the asphalt pavement mixture from adhering to the compaction roller, the compaction roller vehicle is provided with a watering device for spraying the compaction roller. In the conventional watering device, the amount of watering is too large, water flows into the pavement surface, and the water evaporates, thereby causing a blistering phenomenon that the pavement surface swells up.

  Therefore, conventionally, in order to reduce the amount of water sprinkled, the driver manually turned on / off the water while visually checking the state of the asphalt pavement. In addition, as a configuration for reducing the sprinkling amount, for example, there is one that adjusts the sprinkling amount by connecting a sprinkling nozzle via an opening / closing valve and adjusting the opening degree of the opening / closing valve (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 11-200312

  However, when the driver manually turns the watering on and off as in the past, it is difficult to adjust the watering amount to an appropriate amount, causing a large amount of watering, causing blistering, and insufficient watering. There was a problem that the asphalt pavement peeled off due to the mixed material adhering to the rolling roller.

  On the other hand, when the sprinkling amount is adjusted using the open / close valve, the sprinkling amount can be adjusted to an appropriate amount, but when the sprinkling amount is reduced, the injection angle from the sprinkling nozzle becomes smaller, so the middle of the adjacent sprinkling nozzles There is a problem that a portion where water is not sprayed is generated on the surface of the rolling roller, and the asphalt pavement is peeled off due to the asphalt mixture adhering to the portion.

  Therefore, the present invention has been made in view of these problems, and it is an object of the present invention to provide a roller watering device that can adjust the watering amount to an appropriate amount and can reliably spray water over the entire surface of the rolling roller. .

The invention according to claim 1 for solving the above-described problem is that a plurality of water spray nozzles are provided from water spray pipes arranged along the axial direction of the pressure roller in order to prevent adhesion of the asphalt pavement to the pressure roller. A water sprinkling device for sprinkling water to the pressure roller via a water sprinkling amount adjusting means for adjusting a water sprinkling amount to the pressure roller, and a gap adjusting means for adjusting a distance between the pressure roller and the water sprinkling pipe. The water sprinkling amount adjusting means is composed of a water sprinkling nozzle whose maximum flow rate is limited, and there are at least three water sprinkling nozzles along the water sprinkling pipe. Of these, the watering nozzles located at both ends of the watering pipe are constituted by watering nozzles having a maximum flow rate larger than that of the watering nozzles located on the inner side .

According to such a structure, generation | occurrence | production of a blistering phenomenon can be prevented by reducing the watering amount to a rolling roller with a watering amount adjustment means. At this time, the spray angle from the water spray nozzle decreases as the amount of water spray decreases, but by increasing the distance between the pressure roller and the water distribution pipe by the interval adjusting means, the water spray range becomes wider, Water can be reliably sprayed over the entire surface. That is, the present invention secures the watering range by paying attention to the distance between the rolling roller and the watering pipe and lengthening it against the phenomenon that the injection angle becomes small. Moreover, it becomes possible to adjust a watering amount easily using a watering amount adjustment means. By the way, the maximum flow rate is limited to a flow rate that is smaller than the amount of water sprayed that causes a blistering phenomenon in asphalt pavement. The amount of watering that causes blistering is determined by various conditions such as asphalt pavement specifications and the climate of the construction site, and is less than the conventional watering amount. Since the sprinkling amount adjusting means is composed of a sprinkling nozzle whose maximum flow rate is limited, it is possible to reduce the sprinkling amount simply by replacing the sprinkling nozzle without changing the sprinkling supply amount. The amount of watering can be adjusted by the configuration. Further, at least three or more watering nozzles are provided along the watering pipe. Among the watering nozzles, the watering nozzles located at both ends of the watering pipe have a larger maximum flow rate than the watering nozzles located inside. Since it is configured by the nozzle, a large amount of water can be sprayed to both ends in the axial direction of the rolling roller that is open to the outside and water is easy to dry. It is possible to obtain a uniform wetness with the portion, and reliably prevent the asphalt mixture from adhering to the rolling roller and peeling off the asphalt pavement.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to adjust a water spraying quantity to an appropriate quantity, the outstanding effect that water spraying can be reliably carried out to the whole surface of a rolling roller is exhibited.

It is the side view which showed the rolling-roller vehicle using the roller watering apparatus which concerns on embodiment of this invention. It is the expanded side view which showed the space | interval adjustment means of the roller watering apparatus which concerns on embodiment of this invention. (A), (b) is the front view which showed the watering state of the roller watering apparatus which concerns on embodiment of this invention.

  A roller watering device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  As shown in FIG. 1, the rolling roller vehicle 1 sprays water on the front and rear rolling rollers 3 and 3 in order to prevent the mixed material of the asphalt pavement 2 from adhering to the rolling rollers 3 and 3. A roller watering device 10 is provided. The roller watering device 10 includes a watering pipe 11 disposed above the rolling roller, a plurality of watering nozzles 12 attached to the watering pipe 11, a watering tank (not shown) for storing water to be sprinkled, A watering pump (not shown) for supplying water in the watering tank toward the watering pipe 11. The roller watering device 10 of the present invention is particularly suitable for the rolling pressure according to the spraying amount from the watering amount adjusting means 20 for adjusting the watering amount to the rolling pressure roller 3 and the watering nozzle 12 (see FIGS. 2 and 3). An interval adjusting means 30 for adjusting the interval L between the roller 3 and the water sprinkling pipe 11 is provided.

  As shown in FIGS. 1 and 3, the sprinkling pipe 11 is arranged so as to extend along the axial direction of the rolling roller 3. A sprinkling pipe 11 is connected to a splicing pipe 15 extending from a sprinkling pump (not shown). The connection pipe 15 is composed of a flexible member. A plurality (four in this embodiment) of water spray nozzles 12 are attached to the water spray pipe 11 at a predetermined interval (equal pitch) along the longitudinal direction (the axial direction of the rolling roller 3).

  The water spray nozzle 12 is limited by setting a maximum flow rate to a flow rate smaller than the water spray amount at which blistering occurs in the asphalt pavement 2. The amount of water sprinkling that causes the blistering phenomenon is determined empirically by various conditions such as the specifications of the asphalt pavement 2 and the climate and temperature of the construction site. In this embodiment, for example, the water spray nozzle 12 is set for the asphalt pavement 2 made of watertight asphalt concrete laid on the impervious pavement of a dam or a reservoir, and the maximum flow rate is injected at 0.50 liters per minute. A nozzle with an angle of 95 degrees and a nozzle with an injection angle of 95 degrees at 0.67 liters per minute are employed. Watertight asphalt concrete has an asphalt amount of about 8 ± 1 (weight%), which is higher than that of general road asphalt pavement (dense grade asphalt concrete (about 5 ± 1 (weight%))). The form of asphalt pavement 2 has, for example, two asphalt layers (not shown) of 50 mm and 60 mm. Here, the porosity that particularly affects the occurrence of the blistering phenomenon is about 2% for watertight asphalt concrete, and is smaller than about 4% for ordinary dense grained asphalt concrete. In the case of such asphalt concrete specifications, water spray nozzles 12 having a spray angle of 95 degrees at 0.67 liters per minute are attached to both ends of the water spray pipe 11 among the water spray nozzles 12. Inside the longitudinal direction, a watering nozzle 12 having a maximum flow rate of 0.50 liters per minute and an injection angle of 95 degrees is attached. By setting it as such a watering amount, generation | occurrence | production of a blistering phenomenon can be prevented. The reason why the maximum flow rate of the watering nozzles 12 on both sides is increased is as follows. That is, since both end portions in the axial direction of the rolling roller 3 are easily exposed to outside air and sunlight, water on the surface easily evaporates. Among the plurality of water spray nozzles 12, the water spray nozzles 12 positioned at both ends of the water spray pipe 11 are This is because the maximum flow rate is larger than that of the watering nozzle 12 located on the inner side, and the asphalt pavement 2 is grounded in a state where a uniform water film is formed on the surface of the rolling roller 3.

  The spray angle of the watering nozzle 12 is determined by the maximum flow rate. In the watering nozzle 12 of 0.50 liters or 0.67 liters per minute in the present embodiment, the upper limit value of the injection angle is 95 degrees due to the relationship between the water pressure and the watering area. That is, if the spray angle is larger than 95 degrees, water pressure may be insufficient, or the amount of water spray may be insufficient with respect to the water spray area, resulting in uneven spraying.

  In the case of the asphalt pavement 2 having the above specifications, conventionally, a maximum flow rate of 1.0 liter per minute and an injection angle of 110 degrees has been adopted. In the present invention, the water spray nozzle 12 has a smaller flow rate than the conventional one. The type is adopted. By attaching the small flow rate type watering nozzle 12 in this way, the watering amount is reduced without changing the specifications of the watering pump. That is, in this embodiment, the watering amount is adjusted by making the watering nozzle 12 into a thing of a smaller flow type than the conventional watering nozzle, and the watering amount adjustment means 20 is comprised by the watering nozzle 12. FIG. .

  The maximum flow rate and spray angle of the watering nozzle 12 described above are merely examples, and are not intended to be limited to the above. The maximum flow rate of the watering nozzle is appropriately determined so that the blistering phenomenon does not occur, for example, according to different asphalt pavements such as airport runway pavements.

  By the way, although the spraying angle is narrow by having made the watering nozzle 12 into the smaller flow type than before, as shown to (a) of FIG. 3, the rolling roller 3 and the watering pipe 11 (watering nozzle 12). If the distance L between the nozzle and the nozzle is the same as the conventional one, a portion where water is not applied is generated on the surface of the rolling roller 3 corresponding to an intermediate portion between the adjacent watering nozzles 12 and 12. Therefore, in the present invention, as shown in FIG. 3B, the water injection range is widened by moving the watering pipe 11 far from the rolling roller 3. That is, by increasing the distance L between the pressure roller 3 and the watering pipe 11, the sprayed water is applied to the surface of the pressure roller 3 at a position far from the watering nozzle 12. As a result, the water injection range is widened and water is applied to the entire surface of the rolling roller 3.

  As shown in FIG. 2, the interval adjusting means 30 that adjusts the interval L between the rolling roller 3 and the sprinkling pipe 11 includes a support rod 31 that extends in a direction away from the rolling roller 3 (see FIG. 1), The locking member 32 is provided on the support rod 31 and locks the sprinkling pipe 11. The interval adjusting means 30 is provided for each of the front and rear rolling rollers 3 and 3.

  Two support rods 31 are provided in parallel with each other at a predetermined interval in the vehicle width direction, and are configured to bridge the watering pipe 11 between the support rods 31 and 31 (see FIG. 3). . A plurality of locking members 32 (three in this embodiment) are provided on the upper surface of the support rod 31 at a predetermined interval. The locking member 32 includes a semicircular support fitting 32 a and a holding fitting 32 b that presses the sprinkling pipe 11. The support fitting 32a has an inner diameter equivalent to the outer diameter of the sprinkling pipe 11, and is fixed on the support rod 31 so as to open obliquely upward. The sprinkling pipe 11 is placed on the support fitting 32a, and the sprinkling pipe 11 is pressed and locked by the holding fitting 32b.

  The interval L between the rolling roller 3 and the watering pipe 11 may be determined according to the spraying angle of the watering nozzle 12, and the rolling roller is formed at a portion where water sprayed from the adjacent watering nozzles 12, 12 intersects each other. 3 surfaces are located.

  According to the roller sprinkling device 10 having the above-described configuration, the amount of water sprayed onto the rolling roller 3 can be reduced by the water spray amount adjusting means 20, thereby preventing the occurrence of blistering. Here, since the sprinkling amount adjusting means 20 is constituted by a small flow type sprinkling nozzle 12, the driver of the rolling roller vehicle 1 does not have to manually turn on / off the roller sprinkler 10. The watering amount is automatically reduced, and an appropriate amount of watering can be easily performed.

  At this time, the spray angle from the water spray nozzle 12 decreases as the amount of water spray decreases, but by increasing the distance between the pressure roller 3 and the water spray pipe 11 by the distance adjusting means 30, the water spray range (spray range). Therefore, water can be reliably sprayed on the entire surface of the rolling roller 3.

  Further, the water spray amount adjusting means 20 can easily adjust the water spray amount only by replacing the nozzle with a small flow rate type nozzle. Furthermore, according to such a sprinkling amount adjusting means 20, since the sprinkling amount can be reduced without changing the sprinkling supply amount, the sprinkling amount can be adjusted with a simple configuration.

  Furthermore, since the interval adjusting means 30 also has a simple configuration, the interval between the rolling roller 3 and the sprinkling pipe 11 can be easily adjusted.

  In addition, among the plurality of water nozzles 12 attached to the water pipe 11, the water nozzles 12 located at both ends of the water pipe 11 are configured to have a larger maximum flow rate than the water nozzle 12 located inside. Therefore, a large amount of water can be sprayed to both ends in the axial direction of the pressure roller 3 that is open to the outside and easily dry, so that both ends and the inner portion of the pressure roller 3 are uniform. The wetness can be obtained, and the asphalt mixture can be reliably prevented from adhering to the rolling roller 3 and the asphalt pavement 2 being peeled off.

  As mentioned above, although embodiment of this invention was described in detail with reference to drawings, this invention is not limited to this, In the range which does not deviate from the main point of invention, it can change suitably. For example, the configuration of the sprinkling amount adjusting unit 20 and the interval adjusting unit 30 is not limited to the configuration of the above embodiment, and may be other configurations.

2 Asphalt pavement 3 Rolling roller 10 Roller sprinkler 11 Sprinkling pipe 12 Sprinkling nozzle 20 Sprinkling amount adjusting means 30 Spacing adjusting means

Claims (1)

In order to prevent the asphalt pavement from adhering to the pressure roller, a roller watering device for spraying water to the pressure roller via a plurality of water nozzles from a water spray pipe arranged along the axial direction of the pressure roller. ,
Watering amount adjusting means for adjusting the watering amount to the rolling roller;
An interval adjusting means for adjusting an interval between the rolling roller and the sprinkling pipe,
The sprinkling amount adjusting means is composed of a sprinkling nozzle whose maximum flow rate is limited,
The watering nozzle is provided at least three or more along the watering pipe,
Among the watering nozzles, the watering nozzles located at both ends of the watering pipe are constituted by watering nozzles having a maximum flow rate larger than that of the watering nozzles located inside.

Images