JP4037401B2 - Grout material filling device and grout material filling means - Google Patents

Description

The present invention relates to a grout material filling device for injecting or filling a grout material into a porous pavement having continuous voids such as asphalt pavement (hereinafter also referred to simply as pavement) and a grout material filling installed in an asphalt finisher. It relates to means .

As one of conventional examples of a grout material filling apparatus for injecting a grout material into a porous pavement having continuous voids, a flat plate screed (corresponding to “injection means” in the present invention) is provided on the bottom surface thereof. There is a paving vehicle (see Patent Document 1). This flat screed has a vibration device and is configured to come into surface contact with a grout material spread while vibrating in the vertical direction as the paving vehicle travels. The grouting material spread was subjected to a surface vibration load, and the grouting material was injected into the paved asphalt layer.
As another conventional example of the grout material filling device, two cylindrical rollers (corresponding to the “injection means” in the present invention) having a cylinder length shorter than the pavement width dimension of the pavement correspond to the pavement machine. There is a paving vehicle arranged in tandem in the traveling direction (see Patent Document 2).
JP 7-102516 A Japanese Utility Model Publication No. 2-139905

  However, in the paving vehicle of Document 1, when traveling on an uneven pavement, the flat screed may come into contact with the convex pavement surface, and the grout material may be pushed forward in the traveling direction by the flat screed. there were. In general, it is efficient to perform pavement work while keeping the vehicle speed constant, but if the flat screed hits the convex part of the pavement, smooth running is hindered or the asphalt layer from the same part It peels off and cracks occur on the pavement surface. For this reason, the paving vehicle had to be stopped once.

However, the cylindrical roller of Document 2 is flexible enough to get over the protruding part on the pavement surface while entraining the grout material, so that it can be paved even on uneven pavement surfaces. . However, in the cylindrical roller, the contact area with the grout material is smaller than that of the flat screed and linear contact is made in the pavement width direction of the pavement, so that it is difficult to apply the vibration load to the grout material. For this reason, even when the paving vehicle is driven at a low speed, the vibration load from the cylindrical roller is not sufficiently transmitted to the grout material, and the grout material may not be injected deep into the gap of the pavement.
The present invention has been devised in view of the above points. That is, the problem to be solved by the present invention is to perform the paving work while applying a sufficient vibration load to the grout material even on an uneven pavement surface by winding the belt means between a pair of rollers. is there.

In order to solve the above problems, each invention of the present invention takes the following means.
First, the grout material filling device according to the first invention travels on a porous pavement surface having continuous voids, discharges the grout material onto the porous pavement surface by a discharge means, and spreads the discharged grout material. A grout material filling device that spreads by means and injects the spread grout material into the porous pavement by injection means, the injection means being spaced apart by a support arm at a lower rear side of the grout material filling device main body. The mounting frame supported by the support arm is rotatably supported below the mounting frame, and is opposed to the grout filling device with a gap along the pave width direction of the porous pavement. at least a pair of rollers disposed Jo, an endless belt body means which is wound in ChoWataru state between a pair of rollers, is So設on the mounting frame band member And a vibrating means for imparting vibration to the stage, band member means is characterized by circulating rotating the pair of rollers with movement of the grout filling device.
In the first aspect of the invention, the endless belt means wound between the pair of rollers circulates and rotates with the movement of the grout material filling device. Further, vibration is applied to the band means by the vibration applying means.

Next, the grout material filling means installed in the asphalt finisher according to the second aspect of the invention travels on the paved surface on which the asphalt is paved, and supplies the asphalt stored therein to the paved surface by the supplying means. , spread laid by Shiki拡means supplied asphalt, a grout material filling unit provided with a kneeling spread was asphalt asphalt pavers solidify spread while applying vibration by vibrating means provided on the screed, grouting material filling The means comprises a discharge means for discharging the grout material disposed on the asphalt finisher, and an injection means, and the injection means is detachably installed below the screed at a predetermined interval. If, rotatably mounted below the mounting frame has been asphalt Fi Nissi Comprising at least a pair of rollers spaced apart along the paving width of the asphalt to the opposite shape, a endless belt body means which is wound in ChoWataru state between the pair of rollers against over The belt means is characterized by circulating and rotating between the pair of rollers as the asphalt finisher moves.
In the second invention, the asphalt finisher for paving the asphalt on the pavement surface is provided with discharge means for discharging the grout material and detachable injection means.
According to a third aspect of the present invention, the discharge port of the supply means for discharging the grout material is formed in a tapered shape that becomes wider toward the pavement surface. The grout material filling means according to the apparatus or the second invention.

According to the present invention described above, even on an uneven pavement surface, each roller goes over the convex portion while winding the grout material, so that the paving work of the grout material is hindered by the belt means wound between the rollers. Can be carried out smoothly. Furthermore, since the band means comes into surface contact with the spread grout material, a planar vibration load can be applied to the grout material.
Further, according to the second invention, two paving operations, that is, an asphalt laying operation and a grout material injection operation can be performed by one asphalt finisher.
Furthermore, according to the third aspect, the grout material having fluidity can be discharged onto the pavement surface while widening along the wide taper of the discharge port provided in the discharge means.

The best mode for carrying out the present invention will be described below with reference to the drawings.
1 to 5 and FIG. 12 are diagrams showing the first embodiment, and FIGS. 6 to 10 are diagrams showing the second embodiment. FIG. 11 is a diagram showing another embodiment of the first embodiment and the second embodiment.
“Porous pavement” is generally paved with an open-graded asphalt mixture using aggregate with a relatively small fine particle size, with a passing weight% of the sieve size of 2.36 mm of 10 to 20%. Formed compacted on the surface. General asphalt can be used for this porous pavement. Asphalt types include, for example, modified asphalt such as straight asphalt and modified type II, high viscosity binder, blown asphalt, Trinidad lake asphalt, cutback There are asphalt, asphalt emulsion, decolorization binder, and high viscosity decolorization binder. Modified asphalt and high viscosity binder are more desirable. Similarly, using porous aggregate with reduced fine particle size, porous concrete using porous cement or resin porous concrete using cement alone or cement mixed with polymer material as a binder It can be used as a configuration.
The porosity of this porous pavement is desirably 10 to 40%. When the porosity exceeds 40%, a predetermined strength cannot be obtained as porous pavement, and the load bearing capacity and durability are lowered. Moreover, in the porous pavement having a porosity of less than 10%, it becomes difficult to inject a grud material into the inside. More desirably, the porosity of the porous pavement is 15 to 30%. If it is this porosity, it will become the porous pavement which exhibits the effect derived from a grout material, maintaining predetermined intensity | strength.

As the “grouting material”, a known material can be used, and any cement type, resin type, polymer cement (polymer dispersion + cement) type, or asphalt (bituminous material) type can be used as long as it has fluidity. As the cement binder, various Portland cements, various mixed cements, alumina cements, super-hard cements, and the like can be used. As the resin binder, epoxy resin, acrylic resin (including MMA resin, etc.), urethane resin and the like can be used. An asphalt binder such as an asphalt emulsion may be used as the grout material. Also, cement-based, resin-based, and asphalt-based binders can be appropriately mixed and used in the grout material.
Moreover, you may add polymeric materials, such as resin, rubber | gum, surfactant, and a bitumen material, to a cement-type grout material as needed. Moreover, what mixed mineral fine powder in the paste-form cement containing a lot of excess water may be used. According to this grout material, since the fine mineral powder hardens and maintains the void structure formed after the moisture in the cement evaporates, it is possible to form a water-retaining pavement capable of retaining moisture in the void. These grout materials can be mixed with inorganic materials such as fly ash, silica powder, blast furnace slag fine powder, stone powder, silty minerals, fine aggregates such as silica sand, and the like as necessary. The grout material may be mixed with a known material imparting high functionality and high added value, such as titanium oxide (photocatalyst), foam material, antibacterial agent, phosphorescent material, shrinkage reducing agent, and the like.

First, the grout material filling apparatus 6 according to the first embodiment will be described with reference to FIGS. 1 to 5 and FIG.
The grout filling device 6 shown in FIGS. 1 and 2 is a wheel-type pavement in which the grout is spread and poured or filled on the pavement surface 12 while traveling on a paved porous pavement (asphalt pavement in this embodiment). Vehicle. On the bottom side of the frame 6a of the grout material filling device 6, from the front to the rear in the traveling direction (arrow direction in FIG. 1), the discharge device 18, the spreader 16, the injection means 14, and the finishing device 10 are installed in order.
A storage tank 2 for storing the grout material is provided inside the front of the grout material filling device 6, and a recovery tank 8 for storing the excess grout material recovered by the finishing device 10 is provided inside the rear. . In the upper part of the grout material filling device 6, a driver's seat 4 in which various measuring instruments are arranged is provided.
Here, the direction of pavement orthogonal to the traveling direction of the grout material filling device 6 is defined as the “paving width” direction.

  The storage tank 2 is provided with a feed pipe 22 that leads to a discharge device 18 described later. The feeding pipe 22 is provided with a known measuring means 20 for adjusting the feeding amount of the grout material passing through the inside thereof. As the metering means 20, for example, a flow meter or a rotary feeder (not shown) having a rotor that is rotated by the pressure of the grout material that passes through can be installed in the feed pipe 22. The rotational speed of the rotor of the rotary feeder is regulated by a clutch connected to the shaft.

The discharge device 18 shown in FIG. 3 has a plurality of discharge pipes 18 </ b> A to 18 </ b> F communicating with the feed pipe 22. The plurality of discharge pipes 18 </ b> A to 18 </ b> F are fixed by the frame 19 so as to be arranged in the pavement width direction corresponding to the pavement width dimension of the pavement. Since each of the discharge pipes 18A to 18F has the same basic configuration, the configuration will be described below by taking the discharge pipe 18A as an example. The opening (discharge port 18 a) of the discharge pipe 18 </ b> A shown in FIG. 4 is formed in a wide tapered shape toward the pavement surface 12. For this reason, the grout material having fluidity is discharged to the pavement surface 12 while spreading in a divergent manner along a wide taper.
The grout material is discharged from the discharge port 18a only by the pressure of a pump (not shown) provided in the above-described feed pipe 22. However, a separate pressure pump is provided in the discharge pipes 18A to 18F to further add the grout material. It may be discharged at a high pressure. By discharging at a high pressure, the grout material easily enters the pavement gap. The discharge device 18 may have a configuration other than the above method as long as the grout material can be discharged almost uniformly onto the pavement surface 12.

  As shown in FIGS. 1 and 2, the spreader 16 is mainly composed of a screw conveyor having spiral blades along its axis, and is arranged with its axis directed in the paving width direction of the pavement. By rotating the blades of the screw conveyor in the circumferential direction of the axis, the grout material discharged to the pavement surface 12 is spread on the pavement surface 12 to have a uniform thickness. Note that a known configuration such as a brush may be employed as the spreader 16.

  The injection means 14 shown in FIGS. 5 and 12 is supported by the support arms 30 and 30 at a predetermined interval below the frame 6 a of the grout material filling device 6 and is supported by the support arms 30 and 30. Between the pair of rollers 40a and 40d whose both ends are rotatably supported by the support brackets 36 and 36 below the mounting frame 34, and the rollers 40a and 40d. It is mainly composed of a wound endless strip 42 and a vibration device 32 mounted on the mounting frame 34.

  The pair of rollers 40a and 40d is arranged with its axis line along the pavement width direction of the pavement, and a plurality of (in this embodiment, two cases are shown) assistance between the rollers 40a and 40d. The rollers 40b and 40c are arranged in a state of being rotatably supported by the support brackets 36 and 36 in the same manner as the rollers 40a and 40d. In addition, although the cylinder length of each roller 40a-40d is not specifically limited, It is desirable that it is a dimension which covers the full width of the pavement width of pavement.

  The structure of the support bracket 36 is not particularly limited as long as it is a structure that can rotatably support the rollers 40a to 40d. For example, by adopting a configuration that allows vertical movement at the support bracket 36 having a configuration in which a spring member such as a spring is attached or a support portion between the support bracket 36 and the shaft portion of each of the rollers 40a to 40d, Each roller 40a-40d can absorb the unevenness | corrugation of the pavement surface 12 by an expansion-contraction motion.

The belt-like body 42 is composed of an endless belt and is wound between the rollers 40a to 40d in a tensioned state without looseness. Although the width dimension of the strip | belt-shaped body 42 is not specifically limited, It is desirable to set it as the dimension which covers the full width of the pavement width | variety of pavement like the cylinder length dimension between the rollers 40a-40d.
And 42 strip | belt-shaped bodies stretched between roller 40a-40d (henceforth the stretch part 41) are the state (free state) which does not receive the vibration load from each roller 40a-40d directly. It has become. The spanning portion 41 vibrates while being oscillated so as to strike a whip by vibrations transmitted from locations in contact with the rollers 40a to 40d.
The material of the belt-like body 42 only needs to be flexible enough to circulate and rotate between the rollers 40a to 40d. For example, a belt made of a material having elasticity such as rubber or synthetic resin that can be flexibly deformed according to the unevenness of the pavement surface 12 can also be employed. In order to improve durability, a thin metal belt may be used.

  The vibration device 32 has a known structure, and is installed on the above-described mounting frame 34. The vibration device 32 may be built in the mounting frame 34. Instead of the vibration device 32, a mechanism (vibration damper mechanism) that converts the rotational power of the engine of the grout material filling device 6 into a reciprocating motion by a crank and transmits the reciprocating motion to the mounting frame 34 via a spring may be used. Good.

  The finishing device 10 is disposed at the rear end of the grout material filling device 6 and, as shown in FIG. 2, a rake 10a that collects excess grout material at the center of the pavement, and an inhaler that sucks excess grout material collected at the center. 10b. The suction device 10b is disposed in the central portion of the rake 10a, and sucks excess grout material from the suction port. The surplus grout material that has been sucked moves through the collection pipe 10 c by the suction force of the suction means 9 and is sent to the collection tank 8 in the grout material filling device 6. Instead of the rake 10a, a surplus grout material may be collected in the center of the pavement with a known configuration such as a brush.

Each of the rollers 40a to 40d is a convex portion while the grout material is entrained by the belt-like body 42 that is circulated and rotated on the uneven pavement surface 12 while allowing the grout material to permeate into the paved asphalt from the pavement surface 12. Overcoming. For this reason, according to the grout material filling device 6, even on the uneven pavement surface 12, the grout material can be paved smoothly without any trouble.
In addition, since the belt-like body 42 is in surface contact with the spread grout material, a surface vibration load is applied to the spread grout material, and the lashing motion such as undulation is added to the stretched portion 41 of the belt-like body 42. It is possible to inject the grout material into the asphalt that has been paved while giving a moderate impact to the spread grout material while penetrating the grout material from the pavement surface 12 into the inside.

Next, the asphalt finisher 60 according to the second embodiment will be described with reference to FIGS. The asphalt finisher 60 is a wheeled paving vehicle.
First, as a basic configuration shown in FIG. 6, at the front of the asphalt finisher 60 in the advancing direction, a hopper 52 for charging asphalt, a feeder conveyor 53 for conveying and dropping the loaded asphalt on the pavement surface 12, and a pavement surface A spreading device 16 is provided for spreading the asphalt dropped onto the pavement 12 in the pavement width direction. A pair of leveling arms 55 and 55 are connected to the rear portion in the traveling direction so as to be rotatable around the end portion on the vehicle side. Above that, a driver's seat 54 in which various measuring instruments are arranged is provided.

  A screed 56 is connected to the other ends of the leveling arms 55 and 55. The screed 56 has a flat plate shape and is configured to be provided with a known vibration mechanism so as to apply vertical vibration. Further, the support height of the screed 56 is adjusted by rotating the leveling arms 55 and 55.

  Next, as a configuration for paving the grout material shown in FIGS. 7 and 8, the discharge device 18 and the finishing device 10 are installed in this order from the front to the rear in the traveling direction on the bottom surface side of the asphalt finisher 60. ing. The spreader 16 described above can also be used to spread a grout material. A storage tank 2 for storing grout material and a collection tank 8 for storing excess grout material are installed in front of the asphalt finisher 60 in the traveling direction. The pipes 10c and 22 communicate with the tanks 2 and 8, respectively. That is, the configuration for paving the grout material is basically the same as that of the grout material filling device described above. For this reason, the code | symbol corresponding to the same component as the grout material filling apparatus of the above-mentioned Example 1 is attached | subjected, and the detailed description is abbreviate | omitted.

The feature of the asphalt finisher 60 of this embodiment is that the injection means 58 in Embodiment 1 is detachably attached to the screed 56 for spreading and leveling the asphalt by the mounting bracket 44 in the attachment state. .
The basic structure of the injection means 58 shown in FIGS. 9 and 10 is the same as that of the injection means 14 of the grout material filling device 6 described in the first embodiment, and includes an attachment frame 34, rollers 40a to 40d, and a belt-like body 42. Its main part is configured. Since the injection means 58 is vibrated by the vibration mechanism installed in the screed 56, it is not necessary to provide a separate vibrator.
The mounting bracket 44 may have any configuration as long as the injection means 58 can be stably fixed to the screed 56. For example, the side surface of the screed 56 and the side surface of the injection means 58 may be bridged and fixed with bolts.
According to the asphalt finisher 60, two paving operations, that is, an asphalt laying and consolidation operation and a grout material injection operation can be performed by one unit.

The discharge device 18 and the finishing device 10 may be mounted on the asphalt finisher 60. However, it is desirable that the discharge device 18 and the finishing device 10 be detachable so that they can be removed when paving asphalt. It is not necessary when paving asphalt, and the asphalt finisher 60 can be made compact by removing the devices 10 and 18. When the discharge device 18 is removed, the opening of the feed pipe 22 is plugged with a lid member to prevent liquid leakage.
Although both the storage tank 2 and the collection tank 8 may be equipped, they may be detachable so that they can be removed when paving asphalt. When the tanks 2 and 8 are detachable, the tanks 2 and 8 are attached to the hopper 52 via predetermined attachment members (not shown) at the time of paving the grout material.

[Other embodiments]
The grout material filling device and the asphalt finisher 60 according to the present invention are not limited to the above-described embodiments, and may take other various embodiments.
First, the grout material filling device 6 or the like is not limited to a wheel type that travels with a tire, but may be improved as a banding type that travels with a crawler. The grout material filling device 6 may be of a pulling type that pulls the injection means 14 backward. The asphalt finisher 60 may be a self-propelled type in which the screed 56 and the injection means 58 are attached to the vehicle body. Moreover, a high vibration load can be imparted to the grout material by providing the vibration damper mechanism and the vibrator 32 in the injection means 14 and 58.
Further, the storage tank 2 and the recovery tank 8 are not limited to the front position and the rear position of the grout material filling device 6 and the like, and can be disposed anywhere as long as there is no problem in the work.

Next, as shown in FIG. 11, a plurality of injection means 14a (58a) shorter than the pavement width dimension of the pavement are moved in the traveling direction of the grout filling device 6 or the asphalt finisher 60 (the direction indicated by the dotted arrow in the figure). ) May be fixed to the mounting frame 34 so as to be arranged in a column. In this case, the injection means 14a (58a) and 14a (58a) arranged in the forward direction of travel and the injection means 14a (58a) arranged in the rear of the travel direction proceed so as to cover the entire width of the pavement. Arrange them so that they overlap in the direction.
Each injection means 14a (58a) may be attached to the mounting frame 34, but it is desirable that each injection means 14a (58a) be detachable so as to be individually removable for easy maintenance. In this case, it is good also as a structure which can expand the attachment frame 34 to the pavement width direction of a pavement.

  Next, in FIG. 5 or FIG. 9, the gap between the rollers 40 a to 40 d and the pavement surface 12 is finely adjusted by changing and adjusting the vertical mounting position of the support bracket 36 with respect to the mounting frame 34. can do. Similarly, the gap between the rollers 40a to 40d and the pavement surface 12 may be finely adjusted by adopting a configuration in which the vertical mounting positions of the support arms 30 and 30 in FIG.

  Next, in the case where the unevenness of the pavement surface 12 of FIG. 8 is very small, and even the flat screed does not get caught on the convex part of the pavement surface 12, and there is no hindrance to the injection of the grout material, the injection means 58 is not used. Alternatively, the screed 56 can be brought into direct contact with the pavement surface 12 to perform the injection operation.

  The configuration of the injection means 14 and 58 can be applied to various compacting machines such as a load roller, a tire roller, a vibration roller, and a tamping roller.

It is a schematic side view of a grout material filling apparatus. It is a schematic front view of a grout material filling apparatus. It is a schematic front view of a discharge device. It is a side view near the discharge outlet of the discharge device. It is a schematic side view of an injection | pouring means. It is the schematic front view which showed the basic composition of the asphalt finisher. It is a schematic front view of an asphalt finisher. It is a schematic side view of an asphalt finisher. It is a schematic side view of an injection | pouring means. It is a schematic front view of an injection | pouring means. It is a schematic front view of another example of an injection | pouring means. It is a schematic sectional drawing of a part of injection | pouring means.

Explanation of symbols

6 Grouting material filling device 12 Pavement surface 14, 14a, 58, 58a Injection means 16 Spreading device 18 Discharge device 18a Discharge port 19 Frame 30 Support arm 32 Vibration device 34 Mounting frame 36 Support brackets 40a to 40f Roller 41 Rolling of roller Portion 42 Band-shaped body 44 Mounting bracket 56 Screed 60 Asphalt finisher

Claims (3)

It runs on the porous pavement surface with continuous voids, discharges the grout material onto the porous pavement surface by the discharging means, spreads the discharged grout material by the spreading means, and injects the spread grout material A grout filling device for injecting into porous pavement by means,
The injection means is supported at a predetermined interval by a support arm at a lower rear side of the grout material filling device main body, and is supported by a mounting frame supported by the support arm and rotatably below the mounting frame. And at least a pair of rollers disposed opposite to each other along the pave width direction of the porous pavement with respect to the grout material filling device, and wound in a stretched state between the pair of rollers. A flexible endless belt unit, and a vibration applying unit that is mounted on the mounting frame and applies vibration to the band unit.
The grout material filling device, wherein the belt means circulates and rotates between the pair of rollers as the grout material filling device moves. The asphalt that runs on the paved surface for paving asphalt, supplies the asphalt accommodated in the asphalt on the paved surface by the supplying means, spreads the supplied asphalt by the spreading means, and spreads the asphalt spread Grout material filling means installed in an asphalt finisher that is laid and solidified while applying vibration by means of vibration applying means provided on the screed ,
The grout material filling means is composed of a discharge means for discharging the grout material disposed in the asphalt finisher, and an injection means.
The injection means includes a mounting frame that is detachably mounted below the screed at a predetermined interval, and is rotatably supported below the mounting frame along the asphalt pavement width direction with respect to the asphalt finisher. And at least a pair of rollers disposed in opposition with a gap therebetween , and a flexible endless belt unit wound in a stretched state between the pair of rollers,
The grouting material filling means installed in the asphalt finisher, wherein the belt means circulates and rotates between the pair of rollers as the asphalt finisher moves. 2. The grout material filling apparatus according to claim 1, wherein a discharge port of the supply means for discharging the grout material is formed in a tapered shape that becomes wider toward the pavement surface. The grout material filling means according to 2.

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