JP3848138B2 - Pavement construction equipment containing rubber aggregate - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pavement construction apparatus including a rubber aggregate.
[0002]
[Prior art]
In general, as a pavement means for road surfaces, there is a pavement called an elastic pavement in addition to asphalt pavement and concrete pavement.
[0003]
Elastic pavement has become possible to obtain elastic pavement surfaces by mixing rubber-based aggregates with aggregates. In recent years, it is environmentally friendly with noise, etc. By the way, it is used for roads and promenades.
[0004]
[Problems to be solved by the invention]
The elastic pavement is constructed by a construction device in the same manner as the asphalt pavement.
[0005]
The outline of the construction is to pave the pavement material including rubber aggregate dropped on the road surface while advancing the machine body to the left and right with the cross feed device, and then level it flat with the spreader.
[0006]
The laterally fed pavement is finished to a specified finished surface in response to the action of the leveling surface of the leveling device (the pressing force from above). At this time, because the pavement material has elasticity, the pressing force is released at the same time as passing through the leveling action surface, and as a result, a convex part that lifts upward is created after the leveling action surface by the reaction force. was there.
[0007]
This convex portion differs in accordance with the leveling action amount of the pavement material that receives the action of the leveling action surface in each region of the pavement material laterally fed by the lateral feeding device. For example, when the leveling action amount of the pavement material by the leveling action surface is appropriate, a defined flat finished surface without a convex portion can be obtained. On the other hand, if the amount of spreading action is large, a strong pressing action of pressing from above is required to obtain a specified finished surface, and the reaction force also increases, so that a convex portion is easily formed after the finishing action surface has passed. The region where the convex portion was formed was not desirable in terms of workability, such as requiring a separate finishing process.
[0008]
In addition, since the leveling surface is downward, it is very troublesome to remove the pavement material adhering to the leveling surface.
[0009]
Accordingly, the present invention provides a rubber-based aggregate that makes it possible to surely obtain a specified flat finished surface and facilitates the removal work of the paving material adhering to the leveling surface and the finishing surface. It aims at providing the construction apparatus of the pavement including.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, according to a first aspect of the present invention, there is provided a lateral feed device for laterally feeding a pavement material including a rubber-based aggregate mounted on an airframe and dropped on a road surface, and a lateral feed. An elevating and lowering leveling device having a leveling action surface using the paving material laterally fed by the device as a leveling surface of a predetermined thickness, and a leveling leveled by the leveling device A finishing device having a finishing action surface for finishing the surface into a flat specified finishing surface, and when the leveling action surface of the leveling device and the finishing action surface of the finishing device are substantially horizontal, The finishing action surface is continuous with a step higher than the front leveling action surface, and is freely rotatable only upward.
[0011]
Thereby, the pavement material dropped on the road surface is laterally fed by the lateral feed device. The laterally fed pavement is subjected to the leveling surface of the leveling device to become the specified leveling surface, and then the finish specified by the effect of the finishing surface of the finishing device. Finished on the surface.
[0012]
At the time of this finishing operation, for example, when there is a large amount of leveling action by the leveling device, it will receive a strong pressing action up to the specified finishing surface, so that the leveling action surface has passed by the reaction force. A rear convex portion is formed, but the convex portion is subjected to the action of the subsequent finishing action surface. At this time, the convex part is easily subjected to the action of the finishing action surface due to the step, and by turning upward, the flat defined finishing face is surely obtained in combination with the finishing action that does not force it down. Be able to.
[0013]
According to claim 2 of the present invention, the finishing device is detachably supported with respect to the leveling device, and the finishing working surface of the finishing device and the leveling working surface of the leveling device are It is possible to adjust the level difference.
[0014]
Thereby, for example, when the leveling thickness of the pavement material including the rubber-based aggregate is thick, a large step corresponding to that is set. When the spread thickness is small, a small step corresponding to the spread is performed, so that the finishing operation can be performed without difficulty. As a result, a flat finished surface can be reliably obtained by the finishing action surface.
[0015]
According to a third aspect of the present invention, the finishing device is slidably supported in the left-right direction with respect to the traveling direction.
[0016]
As a result, in addition to the finishing action from above, the action in the left-right direction is added when the action is performed by the finishing action surface, for example, the same as the action of uniformly leveling left and right with a trowel, ensuring a flatter finished surface. It will be obtained.
[0017]
Further, according to claim 4 of the present invention, the spreader and the finisher can be rotated from the horizontal state to the standing state in conjunction with the respective finisher surfaces and the spreader surfaces. It is characterized by doing.
[0018]
As a result, after finishing the work, the finishing and leveling surfaces are turned upright by rotating the leveling device and the finishing device to the upright state. Therefore, it is possible to easily remove the attached pavement material.
[0019]
According to a fifth aspect of the present invention, the finishing device is provided with heating means for applying heat to the finishing surface.
[0020]
As a result, the finishing working surface of the finishing device is heated by the heating means, and the amount of adhesion of the pavement material including the rubber-based aggregate is suppressed to a small amount due to the influence of the heat, and a cold fixing state is obtained. It is easy to remove.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to FIGS. 1 to 4.
[0022]
FIG. 1 shows a construction apparatus 1 for a paved road containing rubber aggregates.
[0023]
The construction apparatus 1 has a pair of left and right front wheels 5 and a rear wheel 7 before and after the body 3, and the rear wheels 7 are given rotational power from an engine (not shown) mounted on the body 3. It is a driving wheel. The front wheels 5 are linked to a steering operation unit 11 provided in front of the driver's seat 9 and are steered wheels that can be turned in a desired direction.
[0024]
The machine body 3 includes a hopper 13 that receives the mixed pavement material, a transport device 17 that sends the pavement material in the hopper 13 rearward and drops it onto the road surface 15, and a horizontal that horizontally feeds the dropped pavement material HL left and right. It has a feeding device 19, a spreader 21 that spreads the laterally fed pavement material HL, and a finishing device 23 that uses the spreaded spreader surface as a prescribed finished surface.
[0025]
Here, the pavement HL used in the present invention will be described. It is preferable to use a hybrid aggregate in which a fine aggregate is added to the surface of powdered rubber as the rubber aggregate, including a rubber aggregate. The powder rubber may be a simple substance.
[0026]
The hybrid aggregate desirably has a surface material having a Shore D hardness of 70 or more. Such a hybrid aggregate can be manufactured by the following procedure. That is, after the surface of the granular rubber is subjected to a surface treatment with a surface treatment agent such as a solvent, a liquid rubber solvent, a halogen-containing compound, an inorganic acid, or an organic acid, the surface of the granular rubber subjected to the surface treatment is heated. A curable resin (for example, an epoxy resin, a polyurethane resin, a polyester resin, a phenol resin), a thermoplastic resin (for example, a polyamide resin) or a combination of these resins with a pigment, a colorant, an additive, and the like. An adhesive resin containing a solvent such as ethyl acetate, toluene, xylene and a diluent such as a reactive diluent or a non-reactive diluent is coated. Then, the granular rubber coated with the adhesive resin is added little by little into the fine aggregate surface-treated with a surface treatment agent such as a silane coupling agent solution, and the fine aggregate is attached to the surface of the granular rubber.
[0027]
As the powdered rubber, a pulverized product of a rubber compound (including a waste product such as a waste tire), a crushed or cut product after molding the rubber compound, and the like can be used. As the form of the granular rubber, a granular shape with an average particle size of 0.3 to 50 mm, an elliptical shape with an average maximum length of 0.3 to 50 mm, a string shape with an average maximum length of 0.3 to 50 mm, an average particle size of 0 There are fixed shapes made of polyhedrons or curved bodies of 3 to 50 mm, etc., and any one of these or a combination of a plurality of types can be used.
[0028]
The amount of adhesive resin that coats the granular rubber varies depending on the particle size of the granular rubber and the fine aggregate, but if it is small, the fine aggregate peels off, and if it is large, the fine aggregate is buried in the adhesive resin. Since the unevenness is not formed on the surface of the hybrid aggregate, it is preferable that the top of the fine aggregate protrudes from the adhesive resin layer and that the particle size of the fine aggregate is buried in 5 to 95% of the adhesive resin.
[0029]
On the other hand, the hopper 13 is formed in a box shape having an open top, and has an opening (not shown) at the bottom, and the pavement HL dropped into the hopper 13 is directed toward the opening at the bottom. It comes to slide down.
[0030]
The conveyor device 17 is a conveyor belt type that is long before and after a conveyor belt 29 having a predetermined width is wound endlessly around the front and rear rolling wheels 25 and the drive wheels 27, and an engine (see FIG. Rotation power from (not shown) is applied.
[0031]
The front half side of the conveyor belt 17 faces the lower side of the hopper 13 having an opening at the bottom, and the rear end of the conveyor belt 17 is a lowering part for dropping the pavement material HL carried rearward to the substantially central portion of the road surface 15. 31.
[0032]
The lateral feed device 19 is a spiral blade that feeds laterally from the central part to the left and right sides of a spiral shaft 35 that is long in the vehicle width direction to which rotational power from an engine (not shown) is applied via a conduction case 33. 37 is provided.
[0033]
The spreader 21 is supported by left and right support arms 39 (the opposite side is not shown) so as to be movable up and down. The support arm 39 can be controlled independently in the vertical direction by a front hydraulic device 45 including a piston 41 and a cylinder 43 at the front end (left side in FIG. 1) and a rear hydraulic device 51 including a piston 47 and a cylinder 49 at the rear end. It has become.
[0034]
As a result, fine vertical adjustment of the spreader 21 and the finisher 23 can be obtained.
[0035]
The leveling device 21 has a leveling action surface 53 whose bottom surface is long in the vehicle width direction, and is determined by adjusting the position of the leveling action surface 53 with respect to the road surface 15 by the front and rear hydraulic devices 45 and 51. Thickness leveling surface can be obtained.
[0036]
The front end portion 53 a of the leveling action surface 53 is a tapered guide guide surface so that the paving material HL flows smoothly toward the leveling action surface 53. The spreader 21 may be provided with a vibrator (not shown) that spreads on the bottom surface and applies fine vertical vibrations to the working surface 53 during the spreading operation.
[0037]
The finishing device 23 has a finishing action surface 55 whose bottom surface is long in the vehicle width direction, and the finishing action surface 55 has a level difference d with the leveling action surface 53 of the front leveling device 21 as shown in FIG. Have continuous.
[0038]
The finishing device 23 includes a support frame 57 and a slide plate 59 having a finishing action surface 55 on the bottom surface. The slide plate 59 has left and right flange portions 63 with respect to the left and right guide rail grooves 61 in the vehicle width direction ( It is engaged and supported so as to be slidable in the direction indicated by the arrow in FIG.
[0039]
The slide plate 59 is forcibly given a slide motion by a hydraulic drive device 69 including a cylinder 65 and a piston 67. The piston 67 of the drive device 69 is supported by the support frame 57, and the cylinder 65 is supported by the slide plate 59 via the opening 71 of the support frame 57. The cylinder 65 of the drive device 69 includes the first cylinder 65a and the second cylinder 65a. It is a reciprocating motion type provided with a cylinder 65b.
[0040]
Therefore, the hydraulic pressure is alternately fed into the first or second cylinder chambers 65a and 65b, whereby the piston 67 expands and contracts, and the sliding movement of the slide plate 59 in the vehicle width direction is ensured.
[0041]
The support frame 57 of the finishing device 23 is supported by the rear portion of the body leveling device 21 via a hinge 73 so as not to rotate downward, but only upward.
[0042]
As shown in FIG. 3, the hinge 73 is moved from a state of 180 degrees in which the pair of hinge mounting portions 77 and 77 are opened to the left and right with the hinge 75 as a fulcrum until the hinge mounting portions 77 and 77 are brought into contact with each other. A hinge 73 is used that rotates at a certain degree.
[0043]
Specifically, with the hinge portion 5 of the hinge 73 facing upward, one of the pair of hinge attachment portions 77 is spread and placed on the attachment member 79 of the device 21, and the other on the support frame 57 of the finishing device 23. By screwing, in a state where the rear vertical surface 53b of the leveling operation surface 53 and the front vertical surface 55a of the finishing operation surface 55 are in contact with each other, the downward rotation from the horizontal state is prevented. It has come to be supported. Since the hinge portion 75 is in an upward direction (upward), the hinge portion 75 can be freely rotated. A downward pressing force does not act on the finishing action surface 55, and only the own weight of the finishing device 23 is present. It comes to work. In this case, the pressing force can be adjusted by a spring or the like corresponding to the type of the finishing device 23.
[0044]
The level difference d between the leveling action surface 53 and the finishing action surface 55 is preferably about 3 mm when the construction thickness is about 10%, for example, when the construction thickness is 3 cm.
[0045]
In this case, as shown in FIG. 4, it is possible to secure a desired level difference D by using an attachment member 79 having a different thickness H, and it is possible to cope with a construction having a different thickness.
[0046]
On the upper surface of the slide plate 59 of the finishing device 23, a heater portion 83 is provided as a heating means 83 that applies heat to the finishing action surface 55 of the bottom surface through the opening 81 of the support frame 57. The temperature is controlled to a predetermined heater temperature.
[0047]
In this case, the heating means 83 is not specified as a heater type. For example, the heat may be directly applied by a combustion burner of a combustion apparatus using combustion gas such as propane.
[0048]
The opening 81 of the support frame 57 is set to such a length that the heater portion 85 does not interfere when the slide plate 59 slides left and right.
[0049]
On the other hand, the spreader 21 and the finisher 23 are each spreader working surfaces 53 and finisher working surfaces by the rotation device 87 with the arm joint portion 39a of the support arm 39 supporting the spreader 21 as a fulcrum. 55 can be interlocked to rotate from a horizontal state to a standing state.
[0050]
As shown by the phantom line in FIG. 1, the turning device 87 can control the operation of the spreader 21 and the finishing device 23 from the horizontal state of the solid line to the standing state of the virtual line rotated 90 degrees. The pulling wire 93 is extended from the winding drum 91 of 89, and the extended pulling wire 93 is coupled and supported to the end of the support arm 59 via the intermediate drum 95.
[0051]
In addition, although the rotation apparatus 87 of this embodiment is a pulling wire type, you may implement other means, such as a hydraulic type.
[0052]
A specific construction procedure by the construction apparatus 1 configured as described above will be described.
[0053]
<Cleaning the substrate>
The road surface 15 for constructing the paved road was cleaned with a broom or the like.
[0054]
<Applying primer>
A polyurethane resin solution (Primer # 40, manufactured by Yokohama Rubber Co., Ltd.) was applied as a primer with a roller brush. The primer application amount is 0.10 to 0.15 kg / m ² .
[0055]
<Dryer drying>
Cured until the primer was dry to the touch. The standard drying time is 10 to 30 minutes at an air temperature of 25 ° C.
[0056]
<Applying tack coat>
A polyurethane resin (F9, manufactured by Yokohama Rubber Co., Ltd.) was applied as a tack coat by rake. The tack coat application amount is 0.15 to 0.25 kg / m ² .
[0057]
<Mixing and kneading of paving materials>
After putting 60 kg of hybrid aggregate (HBE801M, manufactured by Yokohama Rubber Co., Ltd.) as a rubber-based aggregate and 18 kg of polyurethane resin (F9, manufactured by Yokohama Rubber Co., Ltd.) as a resin binder into a mortar mixer and stirring for 1 minute Further, carbon black (P black, manufactured by Yokohama Rubber Co., Ltd.) was added as a colorant and stirred for 1 minute to prepare a paving material HL.
[0058]
<Construction of paved road>
The prepared pavement material HL was put into the hopper 13, and a pavement road containing rubber-based aggregate was constructed with a thickness of about 30 mm by the lateral feed device 19, the leveling device 21, and the finishing device 23. The construction amount of the paving material HL is 25 to 28 kg / m ² .
[0059]
<Care>
It was cured until the resin binder was cured. The standard of curing can be opened the next day in summer.
[0060]
In the construction of the paved road, for example, when the amount of leveling action by the leveling device 21 is large, a strong pressing action is applied to the specified finish surface, so that the leveling action surface 53 is caused by the reaction force. After passing, the convex part is made, but the convex part receives the action of the subsequent finishing action surface 55. At this time, the convex portion that receives the pressing action is subjected to the action of the smooth finishing action surface 55 by the step d, and in addition to the finishing action that is not forced by rotating upward, the action in the left-right direction is added. Thus, for example, it becomes the same as the action of uniformly leveling left and right with a trowel, and a flat finished surface SL can be obtained reliably.
[0061]
Further, since the finishing action surface 55 is heated by the heating means 83, adhesion of the paving material HL is suppressed to a small level.
[0062]
On the other hand, after the work is finished, the leveling action surface 53 and the finishing action surface 55 are set up at the same time, so that an unreasonable work posture is not imposed, and the action is not in a cold fixed state. The pavement material HL adhering to the surfaces 53 and 55 can be easily removed.
[0063]
【The invention's effect】
As described above, according to the first aspect of the present invention, even if a convex portion is formed after the spreader working surface has passed, the convex portion has a function of the finishing working surface without difficulty through the step. In addition to receiving and rotating upward, a flat defined finished surface is surely obtained in combination with a finishing action that does not force down. As a result, the finishing process becomes unnecessary, and the work efficiency can be improved.
[0064]
According to claim 2 of the present invention, it is possible to provide a large step corresponding to the spread thickness when the spread thickness is thick, and a small corresponding step when the spread thickness is thin. A flat finished surface can be obtained without difficulty by the finish working surface.
[0065]
According to the third aspect of the present invention, since a lateral action is added in addition to the finishing action from above, a more flat defined finished surface can be reliably obtained.
[0066]
According to the fourth aspect of the present invention, since the leveling device and the finishing device can be turned to the upright state after the work is completed, the leveling working surface and the finishing surface are not forced to be forced. Pavement material adhering to the working surface can be easily removed.
[0067]
According to claim 5 of the present invention, since heat can be applied to the finishing surface by the heating means, adhesion of the pavement material including the rubber-based aggregate can be suppressed to be small due to the influence of the heat, It can be removed before it cools and solidifies.
[Brief description of the drawings]
FIG. 1 is a schematic side view of a construction apparatus according to the present invention.
FIG. 2 is a schematic plan view showing a state in which the finishing device is attached to the spreader.
FIG. 3 is a cross-sectional explanatory view taken along line AA in FIG. 2;
4 is a cross-sectional explanatory view similar to FIG. 3 in a state where the level difference between the leveling action surface and the finishing action surface is increased.
[Explanation of symbols]
3 Machine 15 Road surface 19 Horizontal feed device 21 Leveling device 23 Finishing device 53 Leveling surface 55 Finishing surface 83 Heating means HL Paving material SL Finishing surface d Step

Claims (5)

A lateral feed device that laterally feeds a pavement material including rubber-based aggregate mounted on the airframe and dropped onto the road surface; A leveling device capable of moving up and down with a leveling surface to be finished, and a finishing device with a finishing surface for finishing the leveling surface leveled by the leveling device to a flat prescribed finished surface; When the leveling surface of the leveling device and the finishing surface of the finishing device are substantially horizontal, the rear finishing surface has a step higher than the front leveling surface. A pavement construction apparatus including a rubber-based aggregate that is continuous and freely rotatable only upward. The finishing device is detachably supported with respect to the leveling device, and is capable of adjusting a level difference between the finishing working surface of the finishing device and the leveling working surface of the leveling device. A pavement construction apparatus comprising the rubber-based aggregate according to claim 1. 3. The pavement construction apparatus including a rubber-based aggregate according to claim 1, wherein the finishing apparatus is supported so as to be slidable in the left-right direction with respect to the traveling direction. The spreader and finisher are capable of rotating from a horizontal state to a standing state in conjunction with the respective finisher surfaces and the spreader surfaces. A pavement construction apparatus comprising the rubber-based aggregate according to any one of the above. 5. The pavement construction apparatus including a rubber aggregate according to any one of claims 1, 2, 3, and 4, wherein the finishing apparatus includes a heating unit that applies heat to the finishing action surface.

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