JP2000064219A - Tire roller and liquid agent spraying method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent sticking of asphalt mix to both the end parts of a tire tread and to improve finishing quality of a rolling road surface by disposing a nozzle in the vicinity of a tire to spray liquid agent in a ring-shape in which a tire width is made a substantial diameter for the tire tread of a tire constituting a rolling wheel. SOLUTION: Liquid agent sprayed from a jet port of a nozzle 20 is sprayed in a hollow conical shape by the inertial force and is sprayed in a ring-shape for an object to be sprayed. As a result, as for liquid agent spraying amount per tire width to a tire rotating for prescribed time, more liquid agent is spread to the side of a tip part of a tire tread 9 F than the center of the tire tread 9 F. As a result, because spraying of liquid agent to both the tip parts of the tire tread can be increased and asphalt mix can be prevented from being stuck to the tire tread, finishing quality of a rolling road surface can be improved by spraying minimum liquid.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road surface rolling tire roller (hereinafter referred to as "tire roller"), and more particularly to a tire constituting a rolling wheel of the tire roller (hereinafter referred to as "tire"). Spray the liquid on the tread of
Hot asphalt mixture (hereinafter referred to as "asphalt mixture"
The present invention relates to a tire roller having a nozzle that is effective in preventing the adhesion of the above).

[0002]

2. Description of the Related Art When asphalt paving a road or the like, if a tire roller is used to roll the paving surface, the asphalt mixture will adhere to the tire tread (hereinafter referred to as "tire tread") of the tire. . If the rolling operation is continued in such a state, the adhered matter impairs the flatness of the rolling road surface, which adversely affects the pavement quality. Therefore, normally, a liquid agent such as water or oil or a special anti-adhesion agent (hereinafter referred to as “liquid agent”) is sprayed on the tire tread to prevent the asphalt mixture from adhering to the tire tread.

Conventionally, as shown in FIG. 6 (a), a body member 41 is provided with a conduit portion 41a, and a nozzle 40 having a slit-shaped jet port 41b at the tip thereof is used, and a pump or the like for supplying a liquid agent The spraying means 4 consisting of
The liquid agent was sprayed on the tire tread with the slit direction of 1b aligned with the tire width direction. Nozzle 40 of the above type
In the case of using, the spray pattern of the sprayed liquid agent forms a convex lens shape as shown in FIG. 6 (b). Therefore, the amount of liquid agent sprayed per tire width (vertical axis) on the tire that rotates for a predetermined time is as shown in FIG. 6C when the horizontal axis is the tire width direction, and is large in the central portion of the tire tread, It was scattered little on both ends. Therefore, when the above-described nozzle 40 is used as the nozzle of the tire roller, when viewed in the tire width direction, the amount of liquid agent sprayed at both ends is relatively smaller than that at the center of the tire tread. As a result, both ends of the tire tread dry quickly when the asphalt mixture is rolled. Therefore, the asphalt mixture starts to adhere from both ends of the tire tread, and unevenness is generated on the pavement surface from that portion, which causes deterioration of the finish quality of the rolling surface.

In order to avoid such a situation, it is conceivable to use a conventional nozzle and increase the spray amount of the liquid agent itself to increase the spray amount at both ends of the tire tread surface in the tire width direction. . However, according to this method, the amount of spraying on both ends of the tire tread increases, but the amount of the liquid agent sprayed on the center of the tire tread increases more. In actual construction, it is desirable to spray a small amount of liquid agent.For example, in the rolling operation of asphalt mixture, if the amount is too large, the temperature of the asphalt mixture will decrease and the quality after construction will deteriorate. However, the above method cannot be said to be an appropriate method.

Even if the amount of the liquid agent sprayed per unit width on the tire tread is uniform, the liquid agent sprayed by the surface tension on the tire tread and the centrifugal force of the rotating tire is
It is easy to move to the vicinity of the raised center of the tire tread and the end of the tire tread tends to dry easily. as a result,
Adhesion of asphalt mixture, which is the subject of rolling pressure, tended to start from the tread end of the tire.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to eliminate the above-mentioned drawbacks, and when a liquid agent is sprayed on the tire tread surface of a tire roller, in the tire width direction, as compared with the central portion. By increasing the amount of the liquid agent sprayed on both ends of the tire tread, it is possible to prevent the asphalt mixture from adhering to both ends of the tire tread and improve the quality of the finished rolling surface. It is intended to provide a tire roller. Further, it is another object of the present invention to provide an effective method for spraying a liquid agent when the liquid agent is sprayed on the tread surface of the tire roller.

[0007]

SUMMARY OF THE INVENTION In summary, according to the present invention of claim 1, a nozzle for ejecting a liquid agent in a hollow conical shape from a tip is provided with respect to a tire tread surface of a tire forming a compaction wheel.
It is an object of the present invention to provide a tire roller characterized in that the liquid agent is disposed in the vicinity of the tire so that the liquid agent is dispersed in a ring shape having the tire width as an approximate diameter. Here, the above-mentioned ring shape includes a state in which the liquid agent is sprayed in a substantially circular shape on the tire tread, and the amount sprayed to the outer peripheral portion is relatively large compared to the inner portion. Let's assume.

That is, according to the present invention, the nozzle for ejecting the liquid agent in the shape of a hollow cone from the tip is arranged in the shape of a ring having a diameter substantially equal to the tire width with respect to the tire tread of the tire forming the compaction wheel. By disposing in the vicinity of the tire so as to be sprayed, in the tire width direction, the amount of the liquid agent sprayed to both ends of the tire tread is increased, and the asphalt mixture or the like adheres to both ends of the tire tread. The present invention provides a tire roller that can efficiently prevent this and improve the finish quality of the rolling surface by the minimum amount of liquid spray.

The present invention according to claim 2 provides a liquid agent,
An object of the present invention is to provide a method for spraying a liquid agent on a tire roller, which is characterized in that it is sprayed in a ring shape having the tire width as a substantially diameter on a tire tread of a rotating tire constituting a compaction wheel.

That is, according to the present invention, the liquid agent is sprayed on the tire tread surface of the rotating tire constituting the compaction wheel in a ring shape having the tire width as an approximate diameter, whereby in the tire width direction, The amount of liquid agent sprayed to both ends of the tire tread is increased to effectively prevent asphalt mixture from adhering to both ends of the tire tread, and the minimum amount of liquid spray ensures the finish quality of the rolling surface. It is intended to provide a method for spraying a liquid agent on a tire roller, which can improve the above.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail based on the embodiments shown in the drawings. As shown in FIG. 1 and FIG. 2, a tire roller T according to the present invention includes a front wheel 6F and a rear wheel 6R (rolling wheels) formed of a plurality of pneumatic tires.
And a machine frame 5 supported by the front wheels 6F and the rear wheels 6R, a driver's seat 8 arranged on the machine frame 5, a drive unit, and a control unit (both not shown). Further, it is provided with a liquid agent spraying device. The spraying device includes a pump 11 provided on the left side surface near the front wheel 6F and a filter 1 provided near the rear wheel 6R.
2, the pipes 13F and 13R respectively arranged in the width direction near the front wheels 6F and the rear wheels 6R, and the nozzles 20 arranged on the pipes 13F and 13R through the mounting pipes 17. It is configured.

The pump 11 is a liquid agent tank (not shown) for storing a liquid agent to be sprayed onto the compaction wheels 6F and 6R by one wire-containing vinyl hose 14 (hereinafter referred to as "hose"). ), And the other hose 1
The filter 4 is connected to the filter 12. The filter 12 includes pipes 13F, 1 arranged in the width direction of the front diagonal upper portion of the front wheel 6F and the rear diagonal upper portion of the rear wheel 6R.
The hoses 14 are connected to the 3Rs, respectively. Further, via the mounting pipe 17 to the pipe 13F, 13R,
Nozzles 20 are provided for the tires forming the respective compaction wheels.

Now, the nozzle that can be used in the present invention will be described. FIG. 4 shows an example of an embodiment of a nozzle that can be used in the present invention (hereinafter referred to as “embodiment 1”). The nozzle 20 is formed of a body member 21 and a cap member 22 screwed onto the body member 21.

The body member 21 is provided at one end of its outer peripheral portion with
It has a male screw portion 21b to be screwed with a female screw portion (not shown) formed on the mounting pipe 17. Further, inside the pipe line portion 2 along the axial direction from the base end portion of the male screw portion 21b.
1a is formed. Further, a concave portion is provided at a predetermined position on the end portion of the body member 21 from the outer peripheral direction on one side, and a swirl portion 21e is formed on the upper portion of the concave portion. The conduit portion 21a communicates with the swirl portion 21e by a hole portion 21d formed so as to be oriented in a tangential direction of the inner wall of the swirl portion 21e. In addition, the swirling section 21
A female screw portion 21c is formed in the lower portion of e so that the outer peripheral head of the cap member 22 is screwed.

The cap member 22 has a male screw portion 22 which is screwed onto the outer peripheral head of the cap member 22 with a female screw portion 21c of the body member 21.
d is formed, and the jet port 22b is formed inside thereof.
A swirl part 22a, which is a liquid agent flow path leading to.
The swirl part 21e provided on the body member 21 and the swirl part 22a provided on the cap member 22 are integrated to form a liquid agent flow path. Further, in order to form a later-described hollow cone-shaped spray pattern on the liquid agent to be sprayed, the swirl part 22a is formed with a reduced diameter until it reaches the vicinity of the ejection port 22b, and the swirl part 22a is sprayed from that part. Exit 22
The diameter is formed to be expanded until reaching b. In addition, in the above-described embodiment, the nozzle 20 has the body member 21.
However, it is needless to say that the nozzle having the same structure may be integrally formed.

The nozzle 20 is constructed as described above, and a spraying pattern of the liquid agent when the nozzle 20 is used will be briefly described. Pipe 13F (or 13R)
The liquid agent sent to the nozzle 20 from the pipe 20a
Flow in the axial direction of the pipe portion 21a,
It passes through the hole 21d and flows into the swirl part 21e. This time,
From the tangential direction of the inner wall of the swirl part 21e,
Since it flows into the inside, the swirl part 21 is formed while forming a spiral flow.
e, the inside of 22a is descended, and it reaches from the orifice to the ejection port 22b. The liquid agent sprayed from the ejection port 22b is sprayed in the shape of a hollow cone due to its inertial force, and is sprayed in a ring shape on the target to be sprayed as shown in FIG. 4 (c). As a result, the amount of liquid agent sprayed per tire width (vertical axis) on the tire that rotates for a predetermined time is as shown in FIG.
As shown in (d), a large amount of the liquid agent spreads from the center of the tire tread 9F (or 9R) to the end side of the tire tread 9F (or 9R) in the tire width direction. Tire tread 9F (or 9
It is very effective in preventing adhesion to R).

Furthermore, FIGS. 5 (a) and 5 (b) show another embodiment of the nozzle that can be used in the present invention. Figure 5
Unlike the nozzle 20 shown in FIG. 4, the nozzle 30 shown in (a) is a nozzle for spraying a liquid agent in the axial direction of the body member 31. The body member 31 is provided with a conduit portion 31 a extending from the base end side to a midway portion, and further, the conduit portion 3 a.
It is formed so as to communicate with the whirling flow path 31c in the middle of 1a. The whirling flow path 31c is a liquid medicine permeation portion forming a spiral shape, and is configured such that the liquid medicine passes through the inside thereof and is sprayed from the ejection port 31b while forming a spiral flow. Therefore, it is possible to form a hollow conical spray flow similar to that of the nozzle 20 shown in the first embodiment.

In the nozzle 35 shown in FIG. 5B, the deflector cap 3 is attached to the jet port 36b of the body member 36.
It is formed by screwing 7 together. With the above configuration, since the liquid agent discharged from the ejection port 36b is deflected by the deflector cap 37, it is possible to form a hollow conical spray flow similar to that of the nozzle 20 shown in the first embodiment.

Next, the positions of the nozzles will be described by taking the front wheel 6F as an example. In FIG. 3, the nozzle 20
Is arranged so that the axial direction of the ejection port 22b is substantially orthogonal to the axial direction of the central axis that supports the front wheel 6F. However, the arrangement position of the nozzle 20 is not limited to such a form, and is appropriately arranged at a position where the liquid agent can be sprayed over the entire width of the tire tread 9F of the front wheel 6F as the front wheel 6F rotates. It should be installed. Further, the spraying range of the liquid agent is related to the distance between the nozzle 20 and the compaction wheels 6F and 6R, the orifice formed near the ejection port 22b of the nozzle 20, the discharge pressure of the liquid agent, the discharge amount, and the like. . Therefore, according to the specifications of the tire roller (rolling wheel width, etc.), the diameter of the spreading ring formed on the treads of the rolling wheels 6F, 6R should be substantially equal to the width of the rolling wheels 6F, 6R. It is necessary to properly determine the arrangement position of the nozzle 20. The nozzle 20 is preferably provided for each tire.

When a conventional nozzle 40 (see FIG. 6) having a slit-shaped jet port 41b at the tip is used,
It was necessary to finely adjust the mounting angle with respect to the axis of the nozzle 40 in the blowing direction so that the direction of the slit of the ejection port 41b coincided with the width direction of the tire tread 9F (or 9R). However, when using the above nozzle 20,
Since the liquid agent is sprayed on the tire tread 9F (or 9R) in a ring shape having a tire width substantially as a diameter, it is not necessary to finely adjust the mounting angle of the nozzle 20 around the axis in the blowing direction. Excellent in assembling and maintenance.

The nozzle that can be used in the present invention is not limited to the above-described embodiment, and a nozzle that ejects a liquid agent in a hollow conical shape from the tip is used as a tire tread 9F of a tire that constitutes a compaction wheel.
(Or 9R), various nozzles are applied depending on the type of tire roller, etc., as long as the liquid agent can be dispersed in a ring shape having the tire width as a substantial diameter. It is possible. Further, the liquid agent spraying pattern may have any shape as long as it forms a substantially ring shape, and there is no problem even if the shape is slightly deformed.

The present invention is configured as described above, and its operation will be described below. For the sake of convenience, the description will be given for the case where the liquid agent is sprayed on the front wheel 6F of the compaction wheel, but the same applies to the case where the liquid agent is sprayed on the rear wheel 6R.

When the water spray switch (not shown) provided in the driver's seat 8 is turned on during the rolling operation of the tire rollers T, the electric motor (not shown) is rotated and the pump 11 is rotated. Then, the liquid agent is pumped from the liquid agent tank (not shown) by the pump 11, and the filter 12 and the pipe 13
It passes through F and reaches the nozzle 20. Then, due to the action of the nozzle 20 described above, the discharge port 22b of the nozzle 20.
Therefore, the liquid agent is ejected in the shape of a hollow cone, and most of the liquid agent is sprayed on the tire tread 9F of the rotating front wheel 6F in a substantially ring shape. Will be sprayed. The liquid agent is continuously sprayed, and the entire circumferential portion of the tire tread 9F of the front wheel 6F is in a wet state. Therefore, when the liquid agent is being sprayed, the tire tread 9F of the front wheel 6F has an asphalt mixture or the like. Will not be attached. When the spraying of the liquid agent is stopped, the water spraying switch 11 (not shown) in the driver's seat 8 may be turned off to stop the water spray pump 11 and stop the flow of the liquid agent.

Regarding the structure of the tire roller T described above, only the main parts necessary for explaining the present invention have been described. However, the present invention is applicable to all commonly used tire rollers as long as it satisfies the configuration in which various nozzles having the above characteristics are arranged in the vicinity of the compaction wheels, It goes without saying that the tire roller also includes a combined roller in which the front wheel is an iron wheel and the rear wheel is a plurality of tires.

[0025]

As described above, according to the present invention, a nozzle for ejecting a liquid agent in a hollow conical shape from the tip has a ring whose diameter is approximately the diameter of the tire tread of a tire forming a compaction wheel. By disposing in the vicinity of the tire so that the liquid agent is sprayed in a shape, in the tire width direction,
It is possible to increase the amount of liquid agent sprayed on both ends of the tire tread. Therefore, by using the tire roller according to the present invention, it is possible to efficiently prevent the asphalt mixture and the like from adhering to the tire tread surface, and thus improve the finish quality of the rolling surface by the minimum liquid spray amount. Can be achieved.

Further, according to the present invention, the liquid agent is sprayed on the tire tread surface of the rotating tire constituting the compaction wheel in a ring shape having a diameter substantially equal to the tire width. The amount of liquid agent sprayed on both ends of the tire tread is increased to effectively prevent asphalt mixture from adhering to both ends of the tire tread, and the minimum amount of liquid spray ensures the finish quality of the rolling surface. Can be improved.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a tire roller provided with a spraying device of the present invention.

FIG. 2 is a perspective view showing an embodiment of a spraying device provided in the tire roller of the present invention.

3A and 3B are explanatory views of arrangement positions of nozzles of a tire roller of the present invention, FIG. 3A is a perspective view, FIG. 3B is a plan view, and FIG. 3C is a side view.

FIG. 4 (a) is a plan sectional view showing an embodiment of a nozzle applicable to the spraying apparatus of the present invention, and FIG. 4 (b) is
It is a side sectional view showing one embodiment of a nozzle applicable to a spraying device of the present invention, and (c) is a case where a liquid agent is sprayed using the nozzle shown in (a) and (b). A plan view showing a spraying pattern, (d) a tire for a tire that rotates for a predetermined time in the tire width direction (horizontal axis) when a liquid agent is sprayed using the nozzles shown in (a) and (b). It is a relationship diagram of the amount of liquid agent sprayed per width (vertical axis).

5A and 5B are partial cross-sectional views showing another embodiment of the spray nozzle applicable to the spray device of the present invention.

FIG. 6A is a side view illustrating a nozzle applied to a conventional spraying device, and FIG. 6B is a side view showing a case where a liquid agent is sprayed using the nozzle shown in FIG. A plan view showing a spraying pattern, (c) is a liquid agent per tire width in a tire width direction (horizontal axis) and a tire that rotates for a predetermined time when the liquid agent is sprayed using the nozzle shown in (a). It is a relationship diagram of a spraying amount (vertical axis).

[Explanation of symbols]

T tire roller 6F front wheel (roller wheel) 6R Rear wheel (rolling wheel) 9F, 9R tire tread 13F, 13R piping 17 Mounting tube 20 nozzles 21 Body member 21a Pipe section 21d hole 21e Whirling part 22 Cap member 22a Whirling part 22b spout 22d Male screw part 30 nozzles 31 Body member 31b spout 31c Whirl channel 35 nozzles 36 Body member 36b spout 37 Deflector cap 40 nozzles (conventional)

Claims (2)

[Claims] 1. A nozzle for ejecting a liquid agent in the shape of a hollow cone from the tip is sprayed onto the tire tread of a tire forming a compaction wheel in a ring shape having a diameter substantially equal to the tire width. And a tire roller arranged near the tire. 2. A method for spraying a liquid agent on a tire roller, which comprises spraying the liquid agent on a tire tread of a rotating tire forming a compaction wheel in a ring shape having the tire width as an approximate diameter.