JP2012117253A - Paint coating device for road marking line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paint coating device for a road marking line, for coating a road marking line with required sufficient thickness.SOLUTION: A paint coating device 10 includes a first blade member 96 with a lower end edge 96b to be in parallel with a road surface 42 when coating a road marking line 128 onto the road surface 42, a second blade member 98 with a lower end edge 98b provided adjacently to the first blade member 96, not to be in parallel with the road surface 42 when coating the road marking line 128 onto the road surface 42, and a lifting device 100 for elevating and lowering the first blade member 96 in the vertical direction relative to the second blade member 98, and is configured such that paint 46 for the road marking line made to flow out from an opening 126 is leveled by at least one of the lower end edge 96b of the first blade member 96 and the lower end edge 98b of the second blade member 98 and coated onto the road surface 42, and thus coats the road marking line 128 with the required sufficient thickness.

Description

  The present invention relates to a road marking line paint coating apparatus for coating a road marking line on a road surface, and more particularly to an improvement for coating a road marking line with a necessary and sufficient thickness.

  A hopper for receiving the road marking line paint in a fluid state supplied from the paint storage device, and a width corresponding to the length of the opening by allowing the road marking line paint received by the hopper to flow out from the slit-shaped opening. 2. Description of the Related Art A road marking line paint coating apparatus is known that applies a road marking line having dimensions to a road surface. For example, it is a road lane marking paint coating apparatus described in Patent Document 1. According to this technique, the hopper is moved up and down at a constant speed and the slit-shaped opening is opened and closed, and when the hopper is positioned at the lowered position, the hopper slit-shaped opening is automatically opened immediately. It is said that the vertical movement of the hopper and the opening / closing operation of the slit-shaped opening are not varied, and the road marking line can be easily formed in a road surface shape without variation in the position, shape, and thickness of the edge of the road marking line. Yes.

Japanese Patent No. 2966283

  By the way, as a form of application of the road marking line by the above-mentioned road marking line paint coating apparatus, for example, a new road marking line is applied on a road surface just paved, an old road marking that has deteriorated over time due to wear, etc. There is a form in which a new road marking line is overlaid on the line. However, in the conventional technology as described above, when a new road marking line is overlaid on an old road marking line whose peripheral edge (for example, both side edges in contact with the driving lane of the vehicle in the case of the center line) is worn away due to wear or the like. The new paint cannot be sufficiently applied to the central portion where the old paint remains, and the desired quality may not be obtained. In particular, in the road marking line paint applicator that sprays glass beads on the applied paint, the glass beads do not adhere well to the center where new paint is not sufficiently applied to avoid this. In some cases, the paint had to be painted twice. Considering increasing the thickness of the entire area, including the central part, in order to eliminate this harmful effect, the paint drips from the periphery where paint is excessive, and a new road marking line with a specified width cannot be applied. Cause harmful effects. For this reason, the development of a paint application device for road marking lines that coats road marking lines with a necessary and sufficient thickness has been demanded.

  The present invention has been made against the background of the above circumstances, and an object of the present invention is to provide a road marking line paint coating apparatus for coating a road marking line with a necessary and sufficient thickness.

  In order to achieve such an object, the gist of the present invention is to provide a road marking line paint received by the hopper, which is provided with a hopper for receiving a fluid road marking line paint supplied from a paint storage device. Is a paint application device for a road marking line of a type in which a road marking line having a width corresponding to the length of the opening is applied on the road surface, the road marking line on the road surface A first blade member having a lower edge that is parallel to the road surface when applied, and a first blade member adjacent to the first blade member, and non-applied to the road surface when applying a road marking line on the road surface. A second blade member having a parallel lower end edge, and an elevating device for moving the first blade member up and down with respect to the second blade member. The road marking line paint that has flowed out of the opening is configured to be applied on the road surface by being leveled by at least one of the lower end edge of the first blade member and the lower end edge of the second blade member. It is characterized by.

  According to this configuration, the first blade member having a lower edge that is parallel to the road surface when the road marking line is applied on the road surface, and the first blade member that is provided adjacent to the first blade member are provided on the road surface. A second blade member having a lower edge that is not parallel to the road surface when the road marking line is applied to the road surface, and a lifting device that lifts the first blade member up and down with respect to the second blade member. The road marking line paint discharged from the slit-shaped opening is applied onto the road surface by being leveled by at least one of the lower edge of the first blade member and the lower edge of the second blade member. For example, when a new road marking line is overlaid on an old road marking line that has deteriorated over time due to wear, etc., the old road marking line By changing the relative position of the first blade member and the second blade member according to the remaining condition, the configuration corresponding to the doctor blade for smoothing the road marking line paint is suitable for the shape of the old road marking line. Can be. That is, it is possible to provide a road marking line paint coating apparatus that applies a road marking line with a necessary and sufficient thickness.

  Here, preferably, the lower end edge of the second blade member includes an arc-shaped portion whose distance from the road surface gradually increases toward the center in the width direction. In this way, for example, when a new road marking line is overlaid on an old road marking line whose side edges have been worn away due to wear, such as the center line of a roadway, it is necessary and sufficient to match the shape of the old road marking line A new road marking line can be applied with an appropriate thickness.

  Preferably, the apparatus further comprises a glass bead spraying device for spraying glass beads on the road marking line paint that has flowed out of the slit-shaped opening. In this way, for example, when a new road marking line is overlaid on an old road marking line that has deteriorated over time due to wear or the like, the glass beads can be suitably attached to the applied new paint.

It is a side view explaining the whole structure of the paint coating apparatus for road marking lines which is one Example of this invention. It is a top view of the paint application apparatus for road marking lines shown in FIG. FIG. 2 is a diagram showing a part of the configuration cut away in order to explain in detail the configuration in the vicinity of the hopper in the road marking line paint coating apparatus shown in FIG. 1. FIG. 4 is a diagram when FIG. 3 is viewed in a direction indicated by an arrow IV, and is a diagram illustrating in detail a configuration in the vicinity of a first blade member and a second blade member. It is a figure explaining a mode that the relative position of the up-down direction with respect to the 2nd blade member of a 1st blade member is changed by the raising / lowering apparatus of the paint coating apparatus for road marking lines shown in FIG. 1, and a 1st blade member is a lowest position. It shows the state. It is a figure explaining a mode that the relative position of the up-down direction with respect to the 2nd blade member of a 1st blade member is changed by the raising / lowering apparatus of the paint coating apparatus for road marking lines shown in FIG. It shows the state that was done. It is a figure explaining a mode that the relative position of the up-down direction with respect to the 2nd blade member of a 1st blade member is changed by the raising / lowering apparatus of the paint coating apparatus for road marking lines shown in FIG. FIG. 7 shows a state that is an intermediate position of the state shown in FIG. It is a figure explaining a mode that a road marking line is apply | coated on a road surface in the state in which the slit-shaped opening was formed in the bottom part of the hopper in the paint application apparatus for road marking lines shown in FIG. It is sectional drawing of the thickness direction which shows an example of the road marking line apply | coated on the road surface with the paint application apparatus for road marking lines shown in FIG. 1, and a new road marking line is shown on the old road marking line deteriorated by wear etc. over time. It shows the state of being overcoated. It is sectional drawing of the thickness direction which illustrates the state which overlaid the new road marking line by the conventional technique on the old road marking line deteriorated by wear etc. for comparison with the present Example shown in FIG. It is a figure explaining the structure of the 2nd blade member suitably provided in the paint coating apparatus for road marking lines which is the other Example of this invention, and has shown the state by which the 1st blade member was made into the lowest position. . It is a figure explaining the structure of the 2nd blade member suitably provided in the paint coating apparatus for road marking lines which is the other Example of this invention, and has shown the state which made the 1st blade member into the uppermost position. It is sectional drawing of the thickness direction which shows an example of the road marking line apply | coated on the road surface with the paint application apparatus for road marking lines shown in FIG.11 and FIG.12, and a new road surface on the old road marking line deteriorated by wear etc. over time It shows a state where the marking lines are overlaid. It is a figure which illustrates the structure of the raising / lowering apparatus with which the paint coating apparatus for road marking lines which is the other Example of this invention was equipped. It is a figure explaining in detail the composition of the 1st blade member and the 2nd blade member vicinity in the paint applicator for road marking lines shown in FIG.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a side view illustrating the overall configuration of a road marking line paint coating apparatus 10 (hereinafter referred to as a paint coating apparatus 10) according to an embodiment of the present invention, and FIG. 2 is a plan view of the paint coating apparatus. FIG. The paint coating apparatus 10 includes a vehicle body 16 supported by a pair of left and right front wheels 12 and one rear wheel 14. On this vehicle body 16, a LPG (Liquefied Petroleum Gas) cylinder 18, a glass bead storage box 20 for storing glass beads (colorless transparent spherical glass), and a powdery raw material for road marking line paint The flowable road marking line paint is stored by heating the raw material by an LPG burner (not shown), and the fluid road marking line paint is guided from the opening / closing door 26 opened by the opening / closing operation lever 24. A paint melting pot 22 and a handle 30 are provided to flow down through the gutter 28. That is, in the present embodiment, the paint melting pot 22 corresponds to a paint storage device that stores the road marking paint in a fluid state. The paint application device 10 is a hand-held device that is moved by being manually pushed in the advancing direction (forward direction) indicated by the white arrow in FIG. It may be a self-propelled device that travels using

  On the right side surface of the paint application device 10 in the forward direction, there is a hopper 32 that receives fluid road marking paint that flows down from the open / close door 26 of the paint melting pot 22 through a guide rod 28, and the inside of the hopper 32. A shutter mechanism 34 is provided for opening and closing the fluid road marking line paint received in the opening in order to allow the paint to flow out from the slit-shaped opening having a predetermined length. Further, the glass beads that are allowed to flow down from the glass bead storage box 20 via the hose 36 are scattered in a width dimension that is a predetermined dimension larger than the length of the slit-shaped opening in conjunction with the rotation of the front wheels 12 to 14. A spreader 38 is provided. Here, an opening / closing device that opens and closes between the glass bead storage box 20 and the hose 36 is provided at an end of the hose 36 on the handle 30 side. Further, the spreader 38 is configured to stop spraying by the operation of the connecting device interlocked with the rotation of the front wheel 12 by the opening / closing operation lever 40. That is, in this embodiment, the glass bead storage box 20, the hose 36, the spreader 38, and the opening / closing operation lever 40 spray the glass beads on the road marking line paint that has flowed out of the slit-shaped opening. It corresponds to a glass bead spraying device.

  Further, during the drawing operation for moving the vehicle body 16 forward so that the road marking line paint is applied along the guide line previously drawn on the road surface 42 on the front side in the forward direction of the paint application device 10. A guide rod 44 is provided for matching the guide line. The guide rod 44 is provided so as to be rotatable about the end portion on the vehicle body 16 side as a fulcrum. When the drawing work is not performed, the guide rod 44 is configured to be raised to the position indicated by the broken line in FIG. 1 by manual operation for convenience of storage and transportation.

  FIG. 3 is a diagram showing a part of the configuration cut away in order to explain the configuration in the vicinity of the hopper 32 in detail. As shown in FIG. 3, the hopper 32 has a container shape with an open upper end so that the fluidized road marking line paint 46 supplied from the paint melting pot 22 can be received therein. It has become. Further, a pair of side plates 48 that are brought into contact with the road surface 42 during operation by being slightly protruded from the hopper 32 toward the road surface 42 are fixed to both side surfaces of the hopper 32. Further, in a portion located between the pair of side plates 48 at the bottom of the hopper 32, a fixed shutter member 52 constituting a part of the slit-like opening, and the fixed shutter member 52 A slide plate 56 provided with a movable shutter member 54 brought into contact with the lower end surface and provided so as to be movable in a direction approaching or separating from the fixed shutter member 52 is provided. Further, the glass beads sprayed from the spreader 38 are rebounded to prevent the glass beads from adhering to members such as the hopper 32, and the glass beads are preferably used on the road marking line flowing out from the hopper 32. A cover member 50 is provided on the back side of the hopper 32 (the rear side in the direction of travel of the paint application device 10).

  The slide plate 56 has a pair of engaging pins 58 projecting in the left-right direction with respect to the width direction of the paint application device 10, that is, the forward direction of the paint application device 10. Further, a U-shaped part 60 that circulates halfway around the hopper 32 and a notch 62 that extends in a direction perpendicular to both ends of the U-shaped part 60 and engages with the pair of engaging pins 58 are formed at the tip. A rotating member 66 having a pair of engaging portions 64 rotates around the support pin 68 at the connecting portion between the U-shaped portion 60 and the engaging portion 64 as shown by a thick broken line arrow in FIG. It is provided to be movable.

  As shown in FIG. 1, a shutter opening / closing lever 70 for opening / closing a slit-like opening in the hopper 32 rotates on the side surface on the right side in the forward direction of the paint coating apparatus 10 with the end portion on the vehicle body 16 side as a fulcrum. It is provided to be movable. Further, the output rod 72 connected to the vicinity of the fulcrum of the shutter opening / closing lever 70 and the U-shaped portion 60 of the rotating member 66 are connected via a link member 74. With this configuration, when the shutter opening / closing lever 70 is operated (rotated) in the upward direction and the slide plate 56 is positioned at the approach position, the fixed shutter member 52 and the movable shutter member 52 are movable as shown in FIG. The slit-shaped opening between the side shutter member 54 is closed, and the road marking line paint 46 in the hopper 32 is not allowed to flow out. On the other hand, when the slide plate 56 is moved to the separated position by operating (turning) the shutter opening / closing lever 70 in the downward direction, the fixed shutter member 52 and the movable side are moved as shown in FIG. A slit-shaped opening 126 is formed between the shutter member 54 and the road marking line paint 46 in the hopper 32 is allowed to flow out onto the road surface 42. The slit-shaped opening 126 corresponds to the distance between the pair of side plates 48, that is, the width of the road marking line paint applied to the road surface 42.

  As shown in FIG. 3, a horizontal support shaft 76 for supporting the hopper 32 is provided in the vehicle width direction at the front part in the traveling direction of the paint coating apparatus 10. The hopper 32 is supported so as to be movable in the vertical direction by rotating the support shaft 76 perpendicular to the traveling direction of the paint coating apparatus 10 as a first axis about the first axis. When the hopper 32 is in contact with the road surface 42, the hopper 32 and the support shaft 76 are perpendicular to the support shaft 76 so that the slit-shaped opening is always parallel to the road surface 42. A hopper support mechanism 80 is provided that supports the second shaft center so as to be swingable.

  The hopper support mechanism 80 includes a swing center shaft 78 projecting forward from the hopper 32 in the advancing direction of the paint coating apparatus 10, a support lever 82 rotatably supported by the support shaft 76, and a support thereof. A fitting cylinder 84 is provided at the tip of the lever 82 and into which the swinging center shaft 78 is rotatably fitted. The support lever 82 includes a base end side member 86 and a front end side member 88 that can move relative to each other in the longitudinal direction, and a length adjusting screw for adjusting the relative positions of the base end side member 86 and the front end side member 88. A device 90 and a fixing screw 92 for fixing the relative positions of the proximal end member 86 and the distal end side member 88 are provided, and the overall length thereof can be adjusted as necessary. An LPG burner 94 for heating the hopper 32 is provided in order to prevent the road marking line paint 46 in the hopper 32 from solidifying.

  Further, as shown in FIG. 3, the road marking line paint 46 that has flowed out from the slit-shaped opening is arranged on the rear side in the advancing direction of the paint coating apparatus 10 with respect to the fixed shutter member 52. A first blade member 96 and a second blade member 98 corresponding to a doctor blade for adjusting the thickness are provided adjacent to the fixed shutter member 52. The first blade member 96 and the second blade member 98 are preferably arranged such that the first blade member 96 is rearward and the second blade member 98 is rearward with respect to the traveling direction of the paint coating apparatus 10 as shown in FIG. It is provided to be in front. That is, the fixed shutter member 52, the second blade member 98, and the first blade member 96 are provided adjacent to each other in this order from the front to the rear in the direction of travel of the paint coating apparatus 10. Hereinafter, the configuration of the first blade member 96 and the second blade member 98 will be described in detail with reference to FIGS.

  FIG. 4 is a view of FIG. 3 as viewed in the direction indicated by the arrow IV, and is a view for explaining in detail the configuration in the vicinity of the first blade member 96 and the second blade member 98. The second blade member 98 is fixed to the fixed shutter member 52 with a fastener such as a bolt, and the relative position of the second blade member 98 with respect to the fixed shutter member 52 cannot be changed. In other words, when the pair of side plates 48 are brought into sliding contact with the road surface 42, the relative positional relationship with the road surface 42 is determined.

  Further, as shown in FIG. 4, an elevating device 100 that elevates the first blade member 96 in the vertical direction with respect to the second blade member 98 is provided. The lifting device 100 includes a U-shaped member 102 whose both ends on the forked (bifurcated) side are fixed to the first blade member 96 by bolts 104. A male screw 108 is screwed into the bored female screw hole 106. The male screw 108 is inserted into a through hole 112 formed in a pedestal 110 provided integrally with the hopper 32, and a handle 114 is provided at the upper end thereof so as not to rotate relative to the male screw 108. . Further, a pair of guide rods 116 are provided so as to protrude upward from the U-shaped member 102 and are respectively inserted into a pair of through holes 118 formed in the pedestal 110. Further, as shown in FIGS. 5 to 7 and the like which will be described later, the first blade member 96 is formed with a pair of elongated holes 120 having a longitudinal shape in the vertical direction, and the bolts 122 are loosened and attached. In this state, the first blade member 96 can be moved relative to the second blade member 98 in the vertical direction, and the bolt 122 is tightened so that the relative positions of the first blade member 96 and the second blade member 98 are increased. Is supposed to be fixed.

  In the lifting device 100 configured as described above, when the handle 114 is rotated about its axis as shown by a thick broken line arrow in FIG. 4, the female screw hole 106 and the male screw 108 are screwed together. As a result, the U-shaped member 102 is moved in the vertical direction with respect to the male screw 108. As a result, the first blade member 96 is moved in the ascending direction or the descending direction indicated by the broken-line arrows in FIG. 4, and the relative position of the first blade member 96 with respect to the second blade member 98 is changed. . A stopper 124 with which the U-shaped member 102 is brought into contact is provided at the lowest position of the U-shaped member 102 (the lowest position of the first blade member 96). It is configured not to come into contact with the road surface 42 due to being lowered too much.

  FIGS. 5 to 7 are diagrams illustrating how the vertical position of the first blade member 96 relative to the second blade member 98 is changed by the lifting device 100. FIG. 5 illustrates the first blade. FIG. 6 shows a state in which the member 96 is in the lowest position, FIG. 6 shows a state in which the first blade member 96 is in the uppermost position, and FIG. 7 shows an intermediate position in the state shown in FIGS. Each state is shown. As shown in FIGS. 5 to 7, the lower end edge 96 b of the first blade member 96 is configured to be parallel to the road surface 42 when the road marking line is applied onto the road surface 42. Here, the road surface 42 to be applied with the road marking line is usually made of asphalt or the like, and the surface thereof is not necessarily flat. Therefore, the parallel to the road surface 42 is considered to be approximately parallel. It refers to the positional relationship and does not necessarily mean mathematical parallelism.

  The lower edge 98b of the second blade member 98 is configured to be non-parallel to the road surface 42 when the road marking line is applied onto the road surface 42. The lower edge 98b of the second blade member 98 is preferably provided with an arcuate portion 98a whose distance from the road surface 42 gradually increases toward the center in the width direction, as shown in FIGS. is there. The arcuate portion 98a is configured such that, for example, a distance d between the lower end edge 98b and the lowermost end of the arc 98a is about 3 mm, and a portion parallel to the road surface 42 of about 10 mm is left at both ends. However, the arc-shaped portion 98a may be formed at both ends in the width direction. Further, the arc-shaped portion 98a does not necessarily have to form a part of an arc or an elliptical arc, and may have any shape as long as the distance from the road surface 42 gradually increases toward the center in the width direction. .

  As shown in FIG. 5, in the state where the first blade member 96 is in the lowest position, the arcuate portion 98a at the lower end edge 98b of the second blade member 98 is formed by the first blade member 96 in a front view. Hidden. That is, the relative positional relationship is such that all of the arcuate portion 98 a at the lower end edge 98 b of the second blade member 98 is above the lower end edge 96 b of the first blade member 96. As shown in FIG. 6, when the first blade member 96 is in the uppermost position, the arcuate portion 98a at the lower end edge 98b of the second blade member 98 has the first blade member 96 in a front view. Exposed underneath. That is, the relative position relationship is such that all of the arcuate portions 98 a at the lower end edge 98 b of the second blade member 98 are located below the lower end edge 96 b of the first blade member 96. Further, as shown in FIG. 7, in the state where the first blade member 96 is at the intermediate position shown in FIGS. 5 and 6, the arcuate portion 98a at the lower edge 98b of the second blade member 98 is A part (center portion) of the first blade member 96 is hidden by the first blade member 96 in a front view, and the remaining portions (both end portions) are exposed below the first blade member 96. That is, the central portion of the arcuate portion 98 a at the lower end edge 98 b of the second blade member 98 is above the lower end edge 96 b of the first blade member 96, and its both end portions are the lower end edges of the first blade member 96. The relative positional relationship is lower than 96b.

  FIG. 8 is a view for explaining how the road marking line 128 is applied on the road surface 42 in a state where the slit-like opening 126 is formed at the bottom of the hopper 32. As shown in FIG. 8, in a state where a slit-like opening 126 is formed between the fixed shutter member 52 and the movable shutter member 54 by the operation of the shutter opening / closing lever 70, the paint coating apparatus 10 By being moved in the advancing direction (forward direction) indicated by the white arrow in FIG. 8, the road marking line paint 46 in the hopper 32 is caused to flow out from the slit-shaped opening 126 onto the road surface 42, and the opening A road marking line 128 having a width corresponding to the length of 126 is applied on the road surface. At this time, at least one of the first blade member 96 and the second blade member 98 functions as a doctor blade that adjusts the thickness by leveling the road marking line 128. That is, the road marking line paint 46 that has flowed out of the slit-shaped opening 126 is leveled by at least one of the lower end edge 96b of the first blade member 96 and the lower end edge 98b of the second blade member 98, and It is configured to be applied onto the road surface 42.

  For example, in the state shown in FIG. 5, that is, in the state where the first blade member 96 is at the lowest position, all of the arcuate portion 98 a at the lower end edge 98 b of the second blade member 98 is the lower end of the first blade member 96. The relative positional relationship is above the edge 96b. Accordingly, the first blade member 96 functions exclusively as a doctor blade, and the road marking line paint 46 discharged from the slit-shaped opening 126 is leveled by the lower edge 96b of the first blade member 96 to It is applied on the road surface 42.

  In the state shown in FIG. 6, that is, in the state where the first blade member 96 is at the uppermost position, all of the arcuate portions 98 a at the lower end edge 98 b of the second blade member 98 are the lower end edge of the first blade member 96. The relative positional relationship is lower than 96b. Accordingly, the second blade member 98 functions exclusively as a doctor blade, and the road marking line paint 46 discharged from the slit-shaped opening 126 is leveled by the lower end edge 98b of the second blade member 98 and is It is applied on the road surface 42.

  Further, in the state shown in FIG. 7, that is, in the state where the first blade member 96 is at the intermediate position between the states shown in FIGS. 5 and 6, the central portion of the arcuate portion 98a at the lower end edge 98b of the second blade member 98. Is positioned above the lower end edge 96b of the first blade member 96, and the relative positions are such that both ends thereof are below the lower end edge 96b of the first blade member 96. Accordingly, the first blade member 96 and the second blade member 98 complementarily function as a doctor blade, and the road marking line paint 46 discharged from the slit-shaped opening 126 is formed on the first blade member 96. Of the lower end edge 96b and the lower end edge 98b of the second blade member 98, it is applied by the portion located below the lower end edge 96b of the first blade member 96 and applied onto the road surface.

  FIG. 9 is a cross-sectional view in the thickness direction (the depth direction on the paper is the extending direction of the road marking line 128) showing an example of the road marking line 128 applied on the road surface 42 by the paint coating apparatus 10, and due to wear or the like. A state is shown in which a new road marking line 128 is overlaid on an old road marking line 130 that has deteriorated over time. FIG. 9 illustrates a road marking line 128 applied in a state where the first blade member 96 and the second blade member 98 are in a relative positional relationship as shown in FIG. The first blade member 96 and the second blade member 98 functioning as are indicated by broken lines. When the old road marking line 130 is a center line drawn on the roadway, as shown in FIG. 9, both side edges of the road marking line 130 in contact with the driving lane of the vehicle are worn away due to wear or the like. It is conceivable that the thickness remains relatively thick. When a new road marking line 128 is overlaid on such an old road marking line 130, a blade member having a lower edge that is parallel to the road surface 42 in the prior art, that is, when the road marking line is applied onto the road surface 42. In the application of new paint by the road marking line paint applicator provided only with, for example, as shown in FIG. 10, the new paint cannot be sufficiently applied to the center where the old paint remains, and the center It is conceivable that the thickness of the new road marking line 128 is insufficient at the part. In the case where a part of the thickness becomes insufficient in this way, in the device of the type in which the glass beads are dispersed on the applied paint as in the paint applying device 10, the center where the new paint is not sufficiently applied. There is a possibility that glass beads do not adhere well to the part and the desired quality cannot be obtained.

  On the other hand, in the example shown in FIG. 9, that is, in the application of new paint by the paint application apparatus 10 of the present embodiment, for example, the first blade member 96 and the second blade member 98 are in a relative positional relationship as shown in FIG. By applying in step (2), it is possible to sufficiently apply new paint to the central portion where the paint of the old road marking line 130 remains relatively thick. That is, the road marking line paint 46 that has flowed out of the slit-shaped opening 126 is formed on the first blade member 96 out of the lower edge 96b of the first blade member 96 and the lower edge 98b of the second blade member 98. The first blade member 96 is moved upward with respect to the second blade member 98 at the central portion in the width direction by being applied to the road surface 42 by being smoothed by a portion positioned below the lower end edge 96b. The doctor blade becomes higher by the amount of movement, and a sufficient thickness dimension of, for example, about 1.5 mm can be secured at the center. For this reason, it is possible to apply sufficient paint to adhere the glass beads sprayed from the spreader 38 with a relatively uniform thickness over the width direction of the new road marking line 128.

  In addition, when the old road marking line 130 has a paint that is thicker and older than the example shown in FIG. 9 at the center, the first blade member 96 is shown in FIG. 7 with respect to the second blade member 98. This can be handled by raising the relative position. That is, by adjusting the relative position in the vertical direction of the first blade member 96 with respect to the second blade member 98 by the lifting device 100 according to the aspect such as the thickness of the remaining old road marking line 130, A new road marking line 128 can be applied on the old road marking line 130 with a necessary and sufficient thickness. In addition, when the road marking line 128 is applied on the newly paved road surface 42, the first blade member 96 is set to the lowest position as shown in FIG.

  Thus, according to the present embodiment, the first blade member 96 having the lower edge 96b that is parallel to the road surface 42 when the road marking line 128 is applied on the road surface 42, and the first blade member 96, a second blade member 98 having a lower end edge 98b non-parallel to the road surface 42 when the road marking line 128 is applied on the road surface 42, and the second blade member 98 The road marking line paint 46 discharged from the slit-shaped opening 126 is provided at the lower end edge of the first blade member 96. 96b and at least one of the lower end edges 98b of the second blade member 98, and is configured to be applied onto the road surface 42? For example, when the new road marking line 128 is overlaid on the old road marking line 130 that has deteriorated over time due to wear or the like, the first blade member 96 and the second blade member according to the remaining condition of the old road marking line 130. By changing the relative position to 98, the configuration corresponding to the doctor blade for smoothing the road marking line paint 46 can be made suitable for the shape of the old road marking line 130. That is, it is possible to provide the paint coating apparatus 10 that applies the road marking line 128 with a necessary and sufficient thickness.

  Further, the lower end edge 98b of the second blade member 98 includes an arcuate portion 98a whose distance from the road surface 42 gradually increases toward the center in the width direction. When a new road marking line 128 is overlaid on the old road marking line 130 whose both edges have been worn away, the new road marking line 128 is applied with a necessary and sufficient thickness in accordance with the shape of the old road marking line 130. be able to.

  Further, the glass bead storage box 20 as a glass bead spraying device for spraying glass beads on the road marking line paint 46 that has flowed out of the slit-shaped opening 126, a hose 36, a sprayer 38, and an opening / closing operation lever 40, for example, when a new road marking line 128 is overlaid on an old road marking line 130 that has deteriorated due to wear or the like, for example, glass beads are suitably attached on the applied new paint. be able to.

  Next, another preferred embodiment of the present invention will be described in detail with reference to the drawings. In the following description, parts common to the embodiments are denoted by the same reference numerals and description thereof is omitted.

  FIGS. 11 and 12 are views for explaining the configuration of another second blade member 132 suitably provided in the paint coating apparatus 10 as an alternative to the second blade member 98. FIG. 11 is a diagram illustrating the first blade member. FIG. 12 shows a state where 96 is in the lowest position, and FIG. 12 shows a state where the first blade member 96 is in the uppermost position. As shown in FIGS. 11 and 12, the lower edge 132b of the second blade member 132 of this embodiment is configured to be non-parallel to the road surface 42 when the road marking line is applied onto the road surface 42. From one end in the width direction (right side in the forward direction of the paint coating apparatus 10 in this embodiment) to the other end (left side in the forward direction of the paint coating apparatus 10 in this embodiment). The distance from the road surface 42 is gradually increased. In other words, the lower edge 132b of the second blade member 132 is configured to incline leftward at a predetermined angle with respect to the road surface.

  FIG. 13 is a cross-sectional view in the thickness direction showing an example of a road marking line 128 applied on the road surface 42 by the paint application apparatus 10 provided with the second blade member 132, and an old road surface that has deteriorated over time due to wear or the like. A state where a new road marking line 128 is overlaid on the marking line 130 is shown. FIG. 13 illustrates a road marking line 128 applied in a state where the first blade member 96 and the second blade member 132 are in a relative positional relationship as shown in FIG. In the case where the old road marking line 130 is a boundary line with a sidewalk drawn on the roadway, as shown in FIG. 13, the one edge (right side in FIG. 13) of the road marking line 130 in contact with the traveling lane of the vehicle is It is conceivable that the surface is worn away due to wear or the like, and remains relatively thick toward the other side (left side in FIG. 13). In such a case, for example, by applying the first blade member 96 and the second blade member 132 in a relative positional relationship as shown in FIG. 12, the paint on the old road marking line 130 is relatively thick. New paint can be applied to the remaining sidewalk.

  FIG. 14 is a diagram illustrating a configuration example in which a lifting / lowering device 134 that automatically lifts / lowers the first blade member 96 in the vertical direction with respect to the second blade member 98 is applied to the paint coating device 10. FIG. 15 is a diagram for explaining in detail the configuration in the vicinity of the first blade member 96 and the second blade member 98 in such a configuration. As shown in FIG. 14, the elevating device 134 of this embodiment adjusts the relative position in the vertical direction of the first blade member 96 with respect to the second blade member 98 by rotating the male screw 108 around the axis. An actuator 136 such as a servo motor is provided. In the present embodiment, the first blade member 96 is fitted into guide grooves 138 provided on the inner sides of the pair of side plates 48 at both ends thereof, so that the side plates 48 to the second blade member 98 are fitted. It is provided so as to be movable relative to the vertical direction. The elevating device 134 includes a sensor 140 provided at the center in the width direction of the first blade member 96 in order to detect a distance d2 between the lower edge 96b of the first blade member 96 and the road surface 42. And an electronic control unit 142 for controlling the operation of the actuator 136. In the example shown in FIGS. 14 and 15, the expedient convenience sensor 140 is illustrated as being directly attached to the central portion of the first blade member 96, for example, behind the paint flowing out during application. The mounting position is appropriately set such as avoiding it and mounting it forward.

  In the lifting device 134 configured as described above, a signal indicating the distance d <b> 2 between the lower end edge 96 b of the first blade member 96 detected by the sensor 140 and the road surface 42 is supplied to the electronic control device 142. It is like that. The electronic control unit 142 feedback-controls the operation of the actuator 136 so that the distance d2 detected by the sensor 140 is a predetermined distance of, for example, about 1.5 mm. In other words, control is performed to maintain the distance d2 between the lower end edge 96b and the road surface 42 at the center of the first blade member 96 at a predetermined distance. Here, in a mode in which a new road marking line 128 is overlaid on an old road marking line 130 that has deteriorated over time due to wear or the like, the sensor 140 includes a lower edge 96b of the first blade member 96 and the old road marking line 130. The distance d2 from the surface is detected. Therefore, by applying feedback control of the operation of the actuator 136 so that the distance d2 becomes a predetermined distance, the paint is applied with a relatively uniform thickness over the width direction of the new road marking line 128. be able to.

  The preferred embodiments of the present invention have been described in detail with reference to the drawings. However, the present invention is not limited to these embodiments, and may be implemented in other modes.

  For example, in the above-described embodiment, the first blade member 96 and the second blade member 98 have the first blade member 96 at the rear and the second blade member 98 at the front with respect to the traveling direction of the paint coating apparatus 10. However, the present invention is not limited to this. For example, the first blade member 96 is forward and the second blade member 98 is rearward with respect to the traveling direction of the paint coating apparatus 10. It may be provided so that.

  In the above-described embodiment, the paint application apparatus 10 includes the first blade member 96 and the second blade member 98 that function as doctor blades that smooth the road marking line paint 46 that has flowed out of the slit-shaped opening 126. However, in addition to these two blade members, a third blade member may be provided. In such an aspect, in addition to the lifting device 100 and the like for moving the first blade member 96 up and down with respect to the second blade member 98, the third blade member with respect to the second blade member 98. An elevating device that elevates and lowers is provided.

  In the above-described embodiment, the stationary shutter member 52 that forms part of the shutter mechanism 34 and the second blade member 98 are configured as separate members. It may be configured integrally as a member. That is, a second blade member that constitutes a part of the slit-shaped opening 126 and has a lower edge that is non-parallel to the road surface 42 when the road marking line 128 is applied on the road surface 42, It may be provided adjacent to the first blade member 96.

  In the above-described embodiment, the elevating devices 100 and 134 include the female screw hole 106 and the male screw 108, and the male screw 108 is rotated about the axis with respect to the female screw hole 106, whereby the second blade member 98. The first blade member 96 is moved up and down with respect to the vertical direction. For example, the first blade member 96 includes a hydraulic cylinder that moves the first blade member 96 up and down with respect to the second blade member 98. The relative position in the vertical direction of the first blade member 96 and the second blade member 98 may be changed (adjusted) by controlling the hydraulic pressure supplied to the cylinder.

  In addition, although not illustrated one by one, the present invention is implemented with various modifications within a range not departing from the gist thereof.

10: Paint application device for road marking line 20: Glass bead storage box 22: Paint melting pot (paint storage device)
32: Hopper 36: Hose 38: Spreader 40: Opening / closing operation lever 42: Road surface 46: Road marking line paint 96: First blade member 96b: Lower edge 98, 132: Second blade member 98a: Arc portions 98b, 132b : Lower edge 100, 134: Lifting device 126: Opening 128: Road marking line

Claims (3)

A hopper that receives the road marking line paint in a fluidized state supplied from the paint storage device, and a width corresponding to the length of the opening by allowing the road marking line paint received by the hopper to flow out of the slit-shaped opening. A paint application device for road marking lines of a type that applies road marking lines of dimensions on the road surface,
A first blade member having a lower edge that is parallel to the road surface when the road marking line is applied on the road surface;
A second blade member provided adjacent to the first blade member and having a lower end edge which is non-parallel to the road surface when the road marking line is applied on the road surface;
An elevating device that elevates and lowers the first blade member in the vertical direction with respect to the second blade member,
The road marking line paint that has flowed out of the slit-shaped opening is applied on the road surface by being leveled by at least one of the lower end edge of the first blade member and the lower end edge of the second blade member. A paint coating apparatus for road marking lines, characterized in that it is configured.   2. The road marking line paint coating apparatus according to claim 1, wherein a lower end edge of the second blade member includes an arc-shaped portion whose distance from the road surface gradually increases toward the center in the width direction.   The road marking line paint coating apparatus according to claim 1 or 2, further comprising a glass bead spraying device for spraying glass beads on the road marking line paint that has flowed out of the slit-shaped opening.

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