JP2016089331A - Water sprinkler device for compaction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water sprinkler device for a compaction machine of a simple configuration that suppresses manufacturing costs, the water sprinkler device being capable of completely discharging water remaining in a sprinkler pipe and pipeline to the outside, thereby preventing disability of water sprinkling caused by freezing.SOLUTION: With a water sprinkler device for a compaction machine, a front sprinkling pipe 12 is disposed near a front rolling wheel 2, and a pipe 22 is connected on an inner edge 12a side (on a right edge) of the front sprinkling pipe for leading water supplied by a sprinkling pump 15 into the front sprinkling pipe 12, and the water is sprinkled on an outer peripheral surface of the front rolling wheel 2 from a sprinkling nozzle 31. The inner edge 12a side of the front sprinkling pipe 12 is disposed in an inclined way such that the inner edge side is lower than an outer edge 12b side. An upper drain valve 32 is disposed on the front sprinkling pipe 12, and a lower drain valve 18 is disposed near the sprinkling pump 15.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a watering device for a compacting machine, and more particularly to a watering device for spraying water on a compaction wheel for the purpose of preventing adhesion of pavement material to the compaction wheel of the compacting machine.

This type of compacting machine is used to compact paving materials in road surface paving work or the like. The front and rear parts of the car body are equipped with rolling wheels that also serve as wheels (for example, rolling tires and iron wheels). It is solidified. Since the rolling wheel comes into contact with the pavement material with a strong pressure, a piece peeled off from the pavement material adheres to the surface of the rolling wheel, thereby preventing a smooth road surface from being formed.
Therefore, a sprinkling pipe is arranged near the rolling wheel along the rotation axis of the rolling wheel, and water is supplied to the sprinkling pipe from the sprinkling pump through the pipe during pavement work. Water is sprayed from the nozzle toward the outer peripheral surface of the rolling wheel to prevent the pavement material from adhering.

  By the way, when the paving work on that day is finished, the vehicle is parked near the construction site, but in cold areas where the temperature at night falls below the freezing point, the water remaining inside the sprinkling pipes and piping freezes. The watering the next day may be hindered. It is conceivable that a drain valve is provided in the vicinity of the watering pump and residual water is discharged from the drain valve when the vehicle is parked after the paving operation is completed. However, since the vehicle tilts in various directions according to the road surface gradient during parking, water may remain in the watering pipe, which is not a drastic measure.

  Focusing on such problems, for example, in the technique of Patent Document 1, measures are taken to blow off the water inside the watering pipe and piping with compressed air. Therefore, in the technique of patent document 1, the air pump is connected to piping via the switching valve. When the vehicle is parked at the end of the work, the switching valve is switched and compressed air from the air pump is supplied into the pipe, and the water remaining inside is blown out together with the compressed air from the nozzle of the sprinkling pipe. Yes.

JP 2003-239216 A

  However, in the technique of Patent Document 1, it is necessary to move a large amount of water remaining in a long path composed of a sprinkling pipe and a pipe at a stretch by compressed air and to blow it outside through a minute nozzle hole of the nozzle. Inevitably, the air pump is required to have a high capacity capable of supplying high-pressure compressed air, and there is a problem that various disadvantages such as complication of the watering device and an increase in manufacturing cost occur.

  The present invention has been made to solve such problems, and the object of the present invention is to reduce the manufacturing cost with a simple configuration and to ensure that the water remaining in the water sprinkling pipes and pipes. It is an object of the present invention to provide a watering device for a compacting machine that can be discharged to the outside and can prevent a situation where watering is impossible due to freezing.

  In order to achieve the above object, a watering device for a compacting machine according to the present invention includes a water storage tank for storing water, a watering pump for pumping and discharging water from the water storage tank, and a rolling wheel for compacting a road surface. It is arranged at a position higher than at least the watering pump so as to be close to the outer peripheral surface of the watering device, and a watering pump is connected to one end through a pipe, and water supplied from the watering pump through the pipe is introduced into the inside. Sprinkling water from the nozzle toward the outer peripheral surface of the rolling wheel, and provided near the watering pump, with a watering pipe that is inclined so that one end is at a lower position compared to the other end. And a drain means that can discharge the water in the pipe to the outside, and a communication means that is provided in the water pipe and can communicate freely inside and outside the water pipe.

According to the watering device of the compacting machine configured as described above, when the drain means is opened and the inside and outside of the watering pipe are communicated by the communicating means, the outside air is introduced into the watering pipe through the communicating means. The water inside the sprinkling pipe and the pipe flows down in the pipe by its own weight and is discharged to the outside from the drain means. Due to the inclined arrangement of the sprinkling pipe, the water inside is guided to the pipe following the downward slope without remaining, and the situation where water spray is impossible due to freezing of water inside the sprinkling pipe or pipe is prevented in advance. .
And since it can implement by simple structure which only arranges a sprinkling pipe inclining, various demerits, such as complication of a sprinkler and an increase in manufacturing cost, are avoided beforehand.

As another aspect, it is preferable that the piping is disposed so as to have a downward slope consistently from the watering pipe to the drain means.
According to the watering device of the compacting machine configured as described above, the water from the watering pipe is guided to the lower drain valve following the downward slope without remaining in the pipe, and the water remaining in the pipe is more retained. It is surely prevented.

As another aspect, a pair of rolling wheels are provided on the left and right sides, and watering pipes are individually disposed with respect to the pair of rolling wheels, and the inner end sides facing each other are compared to the respective outer end sides. It is preferable that the pipes are inclined so as to be in a low position, and the pipes extend from the watering pump, branch into a bifurcated shape, and are connected to the inner end sides of both watering pipes.
According to the watering device of the compacting machine configured as described above, the path length of the pipe from the watering pump to the watering pipe is shortened to the minimum, and the pressure loss of water when circulating in the pipe is suppressed, thereby improving efficiency. Thus, water can be sprayed onto the rolling wheel.

  According to the present invention, the manufacturing cost can be suppressed with a simple configuration, and the water remaining inside the sprinkling pipe or pipe can be surely discharged to the outside, thereby preventing a situation where watering is impossible due to freezing. be able to.

It is a side view of the Macadam roller carrying the watering device of an embodiment. It is a schematic diagram equivalent to the II-II line cross section of FIG. 1 which shows the arrangement state of the watering nozzle with respect to a front rolling wheel. It is a schematic diagram equivalent to the III-III line cross section of FIG. 1 which shows the arrangement | positioning state of the watering nozzle with respect to a rear rolling wheel. FIG. 3 is a view as seen from an arrow A in FIG. It is sectional drawing equivalent to FIG. 4 which shows the detail of the front front watering pipe. FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5 showing details of the left front watering pipe. It is sectional drawing corresponding to FIG. 5 which shows the front part watering pipe of another example. It is the VIII-VIII sectional view taken on the line of FIG. 7 which similarly shows the front watering pipe of another example.

Hereinafter, an embodiment in which the present invention is embodied in a water spray device for a Macadam roller will be described.
FIG. 1 is a side view of a Macadam roller equipped with a watering device of this embodiment. In the following description, the front-rear direction and the left-right direction are defined based on the vehicle.
The vehicle body of the Macadam roller 1 (hereinafter sometimes referred to as a vehicle) is composed of a front vehicle body 3 having a front roller wheel 2 and a rear vehicle body 5 having a rear roller wheel 4. The front vehicle body 3 and the rear vehicle body 5 are connected to each other in an articulated manner that can be bent in the horizontal direction via a center pin 6, and the vehicle 1 is turned by bending each other. The front rolling wheel 2 is composed of a pair of left and right iron wheels, is coaxially spaced apart in the left-right direction, and is rotationally driven by a hydraulic motor (not shown). The rear rolling wheel 4 is composed of a single iron wheel and is rotationally driven by a hydraulic motor (not shown).

  An operating console 8 having a steering 7 is installed on the front vehicle body 3, a seat 9 is installed on the rear side of the operating console 8, and a roof 10 is provided so as to cover the operating console 8 and the seat 9 from above. Is provided. An operator seated on the seat 9 operates the Macadam roller 1 by operating the steering 7 and a travel lever (not shown), and during the paving work, paving material laid on the road surface by the front and rear rolling wheels 2 and 4 is used. Compact.

2 is a schematic diagram corresponding to the cross section taken along the line II-II of FIG. 1 showing the arrangement state of the watering nozzle with respect to the front rolling wheel 2, and FIG. 3 is a diagram of the arrangement state of the watering nozzle with respect to the rear pressure wheel 4. FIG. 4 is a schematic view corresponding to a cross section taken along line III-III, and FIG.
Front sprinkling pipes 12 are respectively arranged on the upper rear side of the left and right front rolling wheels 2, and these front sprinkling pipes 12 extend in the left-right direction, and the outer peripheral surfaces of the front rolling wheels 2 respectively. Are opposed to each other at a predetermined interval. The left and right front water sprinkling pipes 12 are located on the inner end 12a side (the right end of the left front watering pipe 12 and the left end of the right front watering pipe 12) facing each other at a lower position than the respective outer ends 12b. As shown in FIG. 2, the inclination angle with respect to the axis L1 in the left-right direction is set to α as viewed from the rear.

  At the same time, the left and right front water sprinkling pipes 12 are inclined so that the outer end 12b side is positioned forward compared to the inner end 12a side, and when viewed from the side as shown in FIG. In addition, the inclination angle with respect to the vertical axis L2 is set to β. By setting the inclination angle β, the front watering pipe 12 is along the tangent to the outer peripheral surface of the front rolling wheel 2 when viewed from the side.

A rear sprinkling pipe 13 is disposed on the upper front side of the rear rolling wheel 4, and the rear sprinkling pipe 13 extends in the left-right direction and is opposed to the outer peripheral surface of the rear rolling wheel 4 with a predetermined interval. ing. The rear water sprinkling pipe 13 is inclined so that the left end 13a side is positioned lower than the right end 13b side. As shown in FIG. 3, when viewed from the front, the axis L1 in the left-right direction is used as a reference. The tilt angle is set to α.
At the same time, the rear water sprinkling pipe 13 is inclined so that the right end 13b side is located rearward compared to the left end 13a side, and although not shown, the vertical axis L2 is the same as the front watering pipe 12 of FIG. Is set to β and is along the tangent line of the outer peripheral surface of the rear rolling wheel 4.

  As shown in FIG. 1, a water storage tank 14 is mounted at a front position of the rear rolling wheel 4 on the rear vehicle body 5, and this water storage tank 14 is used for watering the front and rear rolling wheels 2, 4. Water is stored. A watering pump 15 is accommodated in the rear vehicle body 5, and the watering pump 15 pumps up and discharges water in the water storage tank 14. A joint member 17 is connected to the water spray pump 15 via a pump pipe 16, and a manual drain valve 18 (the drain means of the present invention, hereinafter referred to as a lower drain valve) is attached to the joint member 17. .

One end of each of the front and rear pipes 19 and 20 is connected to the joint member 17, and the other end of the front pipe 19 extends forward and is connected to a joint member 21 provided at the rear end of the front vehicle body 3. Has been. One end of a pair of left and right branch pipes 22 is connected to the joint member 21, and the other end of these branch pipes 22 is connected to the inner end 12 a of the front watering pipe 12. Further, the other end of the rear pipe 20 extends upward and is connected to the left end 13a of the rear water sprinkling pipe 13 described above.
Therefore, the water discharged from the watering pump 15 is guided from the pump pipe 16 to the front pipe 19 and the rear pipe 20, respectively, and introduced into the left and right front water sprinkling pipes 12 via the front pipe 19 and the branch pipe 22, respectively. At the same time, it is introduced into the rear sprinkling pipe 13 via the rear pipe 20.

  As is clear from FIG. 1, the front watering pipe 12 and the rear watering pipe 13 are both disposed at a higher position than the watering pump 15. The path from the front sprinkling pipe 12 to the lower drain valve 18 via the branch pipe 22 and the front pipe 19 is set to be consistently descending, and similarly from the rear sprinkling pipe 13 to the rear part. The route from the pipe 20 to the lower drain valve 18 is also set so as to have a downward slope consistently. As will be described later, such a gradient setting is a measure for preventing water from remaining in the pipes 19, 20, and 22.

  5 is a cross-sectional view corresponding to FIG. 4 showing details of the left front watering pipe 12, and FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. Since the left and right front water sprinkling pipes 12 have the same configuration with left-right symmetry, the configuration of the left front watering pipe 12 will be described below as a representative based on these drawings.

  The front sprinkling pipe 12 has a cylindrical cross section and has a total length substantially equal to the left and right width of the front rolling wheel 2. The base end of one stud bolt 24 is welded to the center of the front watering pipe 12 in the left-right direction, and as shown in FIG. 5, the stud bolt 24 is separated from the outer peripheral surface of the front rolling wheel 2, In other words, the direction is perpendicular to the tangent line of the outer peripheral surface. A bracket 25 is extended from one side of the front vehicle body 3, and the tip end of the stud bolt 24 is inserted into a bolt hole 25 a penetrating the bracket 25 and fixed by a nut 26. Thereby, the front watering pipe 12 is supported from the front vehicle body 3 via the bracket 25, and the inclination angle α of the front watering pipe 12 can be arbitrarily adjusted by loosening the nut 26, as will be described later. It has become.

Caps 27 and 28 made of synthetic resin are put on the inner end 12 a and the outer end 12 b of the front watering pipe 12, and the inside of the front watering pipe 12 is closed by these caps 27 and 28. A connection port 27 a is formed integrally with the cap 27 of the inner end 12 a, and the other end of the branch pipe 22 is connected to the connection port 27 a by a hose band 29.
On the front watering pipe 12, watering nozzles 31 are respectively provided at two positions separated from the stud bolt 24 left and right by a distance l so as to be symmetric about the stud bolt 24. The tip of each water spray nozzle 31 is directed to the outer peripheral surface of the front roller wheel 2, and from the tip of the water spray nozzle 31 using the pressure of water introduced from the water pump 15 into the front water pipe 12. Water is sprayed on the outer peripheral surface of the front rolling wheel 2 in the form of spray.

  The front water spray pipe 12 has a manual drain valve 32 (the communication means of the present invention, hereinafter referred to as the upper drain valve) in the vicinity of the water spray nozzle 31 on the outer end 12b side (corresponding to the inclined upstream side of the water spray pipe 12). The upper drain valve 32 is located at the bottom of the front watering pipe 12 having a cylindrical cross section. Depending on the opening and closing of the upper drain valve 32, the inside of the front watering pipe 12 is communicated with or blocked from the outside.

  On the other hand, the rear sprinkling pipe 13 is also provided with a watering nozzle 31 and an upper drain valve 32 in the same manner as the front sprinkling pipe 12 described above, and the point that the inclination angle α can be arbitrarily adjusted is also the same. The difference is that the sprinkling nozzles 31 are increased from two to four in response to the fact that the total length is longer than that of the front sprinkling pipe 12, and these sprinkling nozzles 31 are centered on the stud bolts 24. They are arranged symmetrically.

  Next, the operation state of the watering device of the Macadam roller 1 configured as described above and the procedure for discharging water after paving work will be described.

Since it is necessary to adjust the inclination angle α of the front and rear sprinkling pipes 12 and 13 in advance in order to operate the watering device, first, adjustment work of the inclination angle α will be described.
The height relationship between the inner end 12a side and the outer end 12b side of the water spray pipes 12 and 13 based on the inclination angle α is intended to discharge water in the water spray pipes 12 and 13. However, when the vehicle is parked on a steep road surface that cancels the inclination angle α, the elevation relationship is reversed by the inclination of the vehicle 1. Therefore, it is necessary to adjust the inclination angle α of the water spray pipes 12 and 13 to a certain large value in advance so that the desired height relationship can be maintained even with the maximum possible road surface gradient.

For example, a normal road surface has a saddle-shaped cross-sectional shape that descends from the center toward both sides of the road in consideration of drainage, and generally has a gradient of about 2%. For this reason, when the vehicle 1 is parked on the road shoulder, it is necessary to set the inclination angle α to 2% or more, and considering the certainty, it is desirable to set the inclination angle α to 5% or more. When 5% is converted into an angle, the angle becomes 2.9 °. Therefore, in this embodiment, the inclination angle α is adjusted to 2.9 ° in both the front and rear sprinkling pipes 12 and 13.
However, the setting of the inclination angle α is an example and can be arbitrarily changed. For example, since the road surface of the curved portion has a gradient (so-called bank) that falls from the outside to the inside of the turn, the inclination angle α may be set based on the gradient. Further, the inclination angle of the front watering pipe 12 and the inclination angle of the rear watering pipe 13 are not necessarily the same, and they may be different.

  The actual inclination angle α is adjusted by the following procedure. First, the nut 26 is loosened, and the sprinkling pipes 12 and 13 are rotated around the stud bolt 24. If the nut 26 is tightened at the position where the watering pipes 12 and 13 are at a desired angle, the adjustment of the inclination angle α is completed. Therefore, for example, even when it is necessary to park the vehicle 1 on a steep road surface due to circumstances at the work site, the inclination angle α can be readjusted to the increasing side by a simple procedure and can be easily handled. .

  Further, on the front and rear sprinkling pipes 12, 13, the watering nozzles 31 are arranged symmetrically with respect to the stud bolt 24, and the stud bolt 24 is orthogonal to the tangent of the outer peripheral surface of the rolling wheels 2, 4. Yes. For this reason, although the distance (water flight distance) of each watering nozzle 31 with respect to an outer peripheral surface changes according to inclination-angle (alpha), the distance with respect to the outer peripheral surface of watering nozzles 31 always becomes equal.

  Specifically, in the front watering pipe 12, the distance to the outer peripheral surface of the pair of left and right watering nozzles 31 is always equal regardless of the inclination angle α. Further, in the rear sprinkling pipe 13, although there is a difference in the distance to the outer peripheral surface between the pair of left and right watering nozzles 31 on the side close to the stud bolt 24 and the pair of left and right watering nozzles 31 on the side far from the stud bolt 24, The left and right watering nozzles 31 and the far left and right watering nozzles 31 are always kept at an equal distance regardless of the inclination angle α. As a result, the flying distance of water from each watering nozzle 31 is made as uniform as possible, and water can be uniformly sprayed on the outer peripheral surfaces of the rolling wheels 2 and 4 regardless of the setting of the inclination angle α.

  After performing the adjustment operation of the inclination angle α as described above, the watering device becomes operable. When starting the pavement work, the lower drain valve 18 and the upper drain valves 32 of the water spray pipes 12 and 13 are all closed in advance. When the watering pump 15 is operated, the water discharged from the watering pump 15 is guided from the pump pipe 16 to the front pipe 19 and the rear pipe 20, respectively, and passes through the front pipe 19 into the left and right front watering pipes 12, respectively. In addition to being introduced, it is introduced into the rear sprinkling pipe 13 via the rear pipe 20. Water is sprayed from each water spray nozzle 31 toward the outer peripheral surface of the compaction wheels 2 and 4 using the water pressure in the sprinkling pipes 12 and 13, thereby preventing the pavement material from adhering to the compaction wheels 2 and 4. .

  When the paving work on that day is finished, the vehicle 1 is parked near the construction site. In cold districts where the temperature of the night falls below freezing point, the water remaining in the water spray pipes 12 and 13 and the pipes 19, 20 and 22 is discharged to prevent freezing of the remaining water. Perform the work to do. In this discharge operation, the lower drain valve 18 and the upper drain valves 32 of the water sprinkling pipes 12 and 13 are all opened, whereby the inside of the water sprinkling pipes 12 and 13 and the pipes 19, 20 and 22 are opened. This water is discharged to the outside through the lower drain valve 18.

The situation at this time will be described in detail. When the upper drain valve 32 of each watering pipe 12, 13 is opened, first, as shown in FIG. It is discharged to the outside through the valve 32. When the water level in the sprinkling pipes 12 and 13 is lowered to the position of the upper drain valve 32, the inside of the sprinkling pipes 12 and 13 is opened to the atmosphere via the upper drain valve 32.
Therefore, the water inside the water sprinkling pipes 12 and 13 and the pipes 19, 20, and 22 is caused by their own weight while introducing external air into the water sprinkling pipes 12 and 13 through the upper drain valve 32. It flows down in 22 and is discharged to the outside through the lower drain valve 18.

  As described above, the front watering pipe 12 is inclined so that the inner end 12a side is positioned lower than the outer end 12b side, and the branch pipe 22 is connected to the inner end 12a side. The rear water sprinkling pipe 13 is inclined so that the left end 13a side is lower than the right end 13b side, and the rear pipe 20 is connected to the left end 13a side. Accordingly, the water in the front sprinkling pipe 12 is guided to the branch pipe 22 following the downward slope without remaining, and the water in the rear sprinkling pipe 13 is similarly transferred to the rear pipe 20 following the downward slope without remaining. It is guided.

  Further, in the present embodiment, the path from the front watering pipe 12 to the lower drain valve 18 via the branch pipe 22 and the front pipe 19 and the rear watering pipes 12 and 13 to the lower drain valve 18 are reached. The route is consistently going down. Therefore, the water from each of the sprinkling pipes 12 and 13 is guided to the lower drain valve 18 following the downward gradient without remaining in the respective pipes 19, 20 and 22.

As a result, all the water remaining in each of the sprinkling pipes 12 and 13 and each of the pipes 19, 20 and 22 can be reliably discharged to the outside from the lower drain valve 18, and the sprinkling caused by freezing of the water inside. The situation of impossibility can be prevented beforehand.
Moreover, it can implement by the simple structure which only arranges the sprinkling pipes 12 and 13 inclining, without utilizing compressed air like the technique of patent document 1. FIG. Therefore, it is possible to avoid various disadvantages such as complication of the watering device due to the installation of the compressor and an increase in manufacturing cost.

On the other hand, since the Macadam roller 1 according to this embodiment includes a pair of left and right front rolling wheels 2, it is necessary to individually provide the watering pipes 12 and 13 on each front rolling wheel 2, and each water spray. It is necessary to incline the pipes 12 and 13 at the inclination angle α.
In the present embodiment, the inner end 12a side of the front water sprinkling pipe 12 facing each other is inclined so as to be lower than the respective outer end 12b side, and the inner end of the front water sprinkling pipe 12 is arranged. A branch pipe 22 branched from the front pipe 19 into a bifurcated shape is connected to the 12a side. Therefore, after realizing the water discharging function by setting the inclination angle α, the path lengths of the pipes 16, 19, and 22 from the watering pump 15 to the front watering pipe 12 can be shortened to the minimum. For this reason, it is possible to reduce the pressure loss of water when circulating in the pipes 16, 19, and 22 and to efficiently spray the front rolling wheel 2.

  By the way, in this embodiment, although the sprinkling pipes 12 and 13 were rotated centering | focusing on the stud bolt 24, inclination-angle (alpha) was adjusted, The structure is not restricted to this, It can change arbitrarily. The front sprinkling pipe 12 will be described as an example, and another example using a U bolt instead of the stud bolt 24 will be described. The difference from the embodiment lies in the structure of the location where the sprinkling pipes 12 and 13 are fixed to the bracket 25, and the configuration of the sprinkling pipes 12 and 13 itself is the same as that of the embodiment, so the description of the common portions is omitted.

  FIG. 7 is a sectional view corresponding to FIG. 5 showing another example of the front watering pipe, and FIG. 8 is a sectional view taken along the line VIII-VIII of FIG. In addition, in order to clarify a characteristic part, illustration of the watering nozzle 31 and the drain valve 32 is abbreviate | omitted in each figure.

  A pair of upper and lower bolt holes 41 having a circular shape is provided on the left side of the bracket 25, and a pair of upper and lower bolt holes 42 having an elongated hole shape extending in the vertical direction is provided on the right side. A pair of left and right U bolts 43 are fitted on the outer periphery of the front water sprinkling pipe 12 from the side of the rolling wheel 2, and the tip of the U bolt 43 is inserted into the bolt holes 41 and 42 of the bracket 25, and the nut 44 on the opposite side. Are screwed together, whereby the front watering pipe 12 is fixed to the bracket 25.

  When adjusting the inclination angle α, the nut 44 is loosened, and the right side of the front watering pipe 12 is displaced in the vertical direction around the left U bolt 43. The inclination angle α of the front sprinkling pipe 12 can be adjusted while moving the right U-bolt 43 up and down in the bolt hole 42, and the adjustment operation is completed if the nut 26 is tightened at a desired angle.

  As a matter of course, the above other examples can also be applied to the rear watering pipe 13. Alternatively, the left and right bolt holes 41 and 42 may be exchanged, and the left side of the sprinkling pipes 12 and 13 may be displaced in the vertical direction to adjust the inclination angle β. Furthermore, both the left and right bolt holes 41 and 42 may be formed in the shape of a long hole. In this case, like the stud bolt 24 of the embodiment, an intermediate position between the left and right watering nozzles 31 (at the position of the stud bolt 24). Since the sprinkling pipes 12 and 13 rotate around the equivalent), the distances of the left and right watering nozzles 31 with respect to the outer peripheral surfaces of the rolling wheels 2 and 4 can always be made equal even if the inclination angle α changes.

  This is the end of the description of the embodiment, but the aspect of the present invention is not limited to this embodiment. For example, in the above-described embodiment, the water spray device of the Macadam roller 1 provided with the steel compaction wheels 2 and 4 is embodied, but it can be applied to various other compaction machines. For example, the present invention may be embodied as a watering device for a tire roller having a compacted tire or a combined roller in which an iron wheel and a compacted tire are combined. Moreover, it is not necessary to equip each of the front and rear rolling wheels 2 and 4 with a watering device, either one of the rolling wheels 2 and 4 may be equipped with a watering device, and the shape of the watering pipes 12 and 13 and the watering nozzle. The number 31 can be arbitrarily changed.

  Moreover, in the said embodiment, although the upper drain valve 32 as a communication means was located in the inclination upstream of the bottom part of the sprinkling pipes 12 and 13, it is not restricted to this. For example, as indicated by a virtual line in FIG. 6, the upper drain valve 32 may be positioned on the inclined downstream side of the bottom portion of the water spray pipe 12 or may be positioned on the inclined upstream side of the ceiling portion of the water spray pipe 12. . In the latter case, the upper drain valve 32 does not perform the function of discharging water when the valve is opened, and has only the function of introducing external air, but has the effect of discharging all the water from the lower drain valve 18 to the outside. Is not different from the above embodiment.

2 Front roller wheel 4 Rear roller wheel 12 Front watering pipe 12a Inner end (one end)
12b Outer end (other end)
13 Rear sprinkling pipe 13a Left end (one end)
13b Right end (other end)
14 Water storage tank 15 Watering pump 16 Pump piping 18 Lower drain valve (drain means)
19 Front piping 20 Rear piping 22 Branch piping 31 Watering nozzle 32 Upper drain valve (communication means)

Claims (3)

A water storage tank in which water is stored;
A watering pump that pumps up and discharges water from the water storage tank;
The watering pump is disposed at a position higher than at least the watering pump so as to be close to the outer peripheral surface of the rolling wheel for compacting the road surface, and the watering pump is connected to one end via a pipe, and the watering pump passes through the pipe. The water supplied from the inside is sprinkled from a plurality of nozzles toward the outer peripheral surface of the rolling wheel, and the water spray is inclined so that the one end side is positioned lower than the other end side. Pipes,
Drain means provided in the vicinity of the watering pump and capable of discharging water in the pipe to the outside when the valve is opened,
A watering device for a compacting machine, comprising a communication means provided on the watering pipe and capable of communicating freely inside and outside the watering pipe.   2. The watering device for a compacting machine according to claim 1, wherein the piping is arranged so as to have a downward slope consistently from the watering pipe to the drain means. A pair of left and right rolling wheels are provided,
The water sprinkling pipes are individually arranged with respect to the pair of rolling wheels, and are arranged so as to be inclined so that the inner end sides facing each other are lower than the respective outer end sides,
The watering of the compacting machine according to claim 1 or 2, wherein the pipe extends from the watering pump, branches into a bifurcated shape, and is connected to the inner ends of the watering pipes. apparatus.

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