JP6423679B2 - Mounting method of road surface groove forming tool - Google Patents

Description

  The present invention relates to a road surface groove forming tool, and more particularly to a road surface groove forming tool that can be quickly attached to and detached from a roller of a load roller.

In recent years, a groove is intermittently provided along the traveling direction of the vehicle on the road surface near the center line of the roadway or near the road shoulder, and vibration generated by traveling on the groove for a vehicle driver traveling near the center line or the road shoulder. A structure that calls attention is known.
Patent Document 1 discloses a configuration in which a plate-like base having a protrusion for forming a groove is detachably provided in a circumferential direction of a roller with respect to a roller of a road roller as a vehicle for compacting asphalt. The asphalt is compacted by the roller while the load roller equipped with the base is advanced, thereby forming a plurality of grooves substantially corresponding to the shape of the protrusions on the road surface after compaction.

JP 2007-169919 A

However, in the above configuration, although the base is detachable from the roller, the base needs to be individually attached to the roller. It takes a great deal of labor and time to install them at even intervals. Specifically, after several bases are mounted in the mountable range on the roller surface, the process of moving the load roller forward or backward by a predetermined distance and mounting the base in a new mountable range after forward or reverse is repeated. Therefore, it is necessary to mount a plurality of bases over the entire circumference of the roller.
As described above, in the conventional configuration, it is necessary to repeat the mounting of the base and the forward or backward movement of the load roller, resulting in poor work efficiency. Further, since it takes a long time to mount one base, there is a problem that the protrusion of the already mounted base is grounded for a long time with respect to the front or rear road surface and easily damaged.

  The present invention has been made to solve the above problems, and provides a road surface groove forming tool that can be quickly and easily mounted on a roller.

A plurality of groove forming bodies that can be mounted on the outer peripheral surface of a load roller for solving the above-described problem, extend along the width direction of the roller, and are fixed to the side surface of the roller via bolts; A pair of roller chains spaced apart in the width direction of the roller, connecting a plurality of groove forming bodies to each other along the circumferential direction of the roller, and connecting ends of the roller chain to each other, A mounting method for a road surface groove forming tool comprising a restraining portion for restraining the groove forming body with respect to the outer peripheral surface of the roller, wherein among the plurality of groove forming bodies, a groove forming body on one end side of the roller chain is provided. Fixing the side surface of the roller via a bolt, advancing the load roller, winding the plurality of groove forming bodies on the roller, connecting ends of the roller chain to each other, The Rachen was configured to include a step of tensioning in the periphery of the side surface of the roller.
According to this configuration, since the plurality of groove forming bodies are connected to each other along the circumferential direction of the roller by the connecting body, by rotating the roller after fixing one groove forming body to the roller, The other groove forming bodies can be wound up sequentially on the outer peripheral surface of the roller, and the road surface groove forming tool can be mounted on the roller very quickly and easily. Further, by adjusting the tension in the peripheral edge of the side surface of the roller, it is possible to increase the restraining force of the groove forming body on the roller outer peripheral surface.
The summary of the invention does not enumerate all necessary features of the present invention, and individual configurations constituting the feature group can also be the invention. Further, the present invention will be described in detail below through embodiments, but the following embodiments are not intended to limit the invention according to the claims, and all combinations of features described in the embodiments are included in the invention. It is not always essential to the solution.

It is a schematic perspective view of a road surface groove forming tool (Embodiment 1). It is a side view which shows the attachment state to a roller. It is sectional drawing which shows the structure of a groove formation body. It is sectional drawing which shows the shape of a groove | channel formation protrusion. It is sectional drawing which shows the structure of a restraint part. It is a schematic perspective view of a road surface groove formation tool (embodiment 2). It is a side view which shows the connection state of a groove formation body and a connection means. It is the schematic which shows the structure of a restraint part. It is a side view which shows the attachment state to a roller. It is a side view which shows the attachment procedure to a roller.

[Embodiment 1]
[Overall configuration of road surface groove forming tool]
As shown in FIG. 1, the road surface groove forming tool 1 includes a connecting portion 3, a plurality of groove forming bodies 5 arranged with a predetermined interval along the length direction of the connecting portion 3, and FIG. 5. As shown in the figure, the restraint part 20 which connects the both ends of the length direction of the connection part 3 is provided as a main structure.

[About connecting part]
The connecting portion 3 is made of a thin material that can be wound in a curved state along the circumferential direction (rotational direction) of the roller 32 of the load roller 30 shown in FIG. As the thin-walled material, a plate-like body such as metal, rubber or resin can be suitably employed. The dimension in the length direction of the connecting portion 3 is appropriately set according to the circumferential length (circumferential length) of the roller 32 to be mounted. The dimension in the width direction orthogonal to the length direction of the connecting portion 3 is set so as to correspond to the length of the roller 32 in the width direction. That is, as shown in FIG. 2, when the connecting portion 3 is wound around the peripheral surface 32 </ b> A of the roller 32, the entire area of the peripheral surface 32 </ b> A is covered with the thin connecting portion 3.

[About groove forming body]
Next, the structure of the groove forming body 5 disposed on the connecting portion 3 with a predetermined interval will be described with reference to FIG. As shown in the figure, the groove forming body 5 includes a plate-like base body 7 extending on the surface 3A of the connecting portion 3 along the width direction of the connecting portion 3 (the width direction of the roller 32), and the base It is comprised from the groove | channel formation protrusion 11 attached to the surface 7A of the body 7 so that attachment or detachment is possible.

  The base body 7 is detachably fixed to the surface 3A of the connecting portion 3 through fixing means such as welding or a bolt (not shown). Specifically, the base body 7 and the connecting portion 3 are fixed only at both ends in the width direction of the base body 7 from the viewpoint of facilitating the attachment / detachment work of the groove forming protrusion 11, In FIG. 5, the connecting portions 3 can be separated from each other by bending. By setting the base body 7 and the connecting portion 3 as described above, it is possible to easily attach and detach a groove forming protrusion 11 described later via a space generated by the bending of the connecting portion 3.

  The base body 7 includes a main body 8 that is set to be slightly longer than the dimension in the width direction of the connecting portion 3, and engaging portions 9 </ b> A and 9 </ b> B formed at both ends of the main body 8. A plurality of bolt insertion holes 8A are formed in the main body portion 8 with a predetermined interval along the width direction. The bolt insertion hole 8 </ b> A is a hole that penetrates the main body portion 8 up and down, and a fastening means such as a countersunk bolt that allows the groove forming protrusion 11 to be attached and detached can be inserted. Further, as shown in the figure, when the groove forming protrusion 11 is mounted, some of the bolt insertion holes 8A among the plurality of bolt insertion holes 8A are not used, and the unused bolts are inserted. The hole 8 </ b> A is used as a preliminary hole for position adjustment of the groove forming protrusion 11.

  That is, as shown by the two-dot chain line, when adjusting the position of the groove forming projection 11 from the center in the width direction of the roller 32 to one side, it is fastened through the bolt insertion hole 8A formed as the preliminary hole. By inserting the means, the groove forming protrusion 11 after the position adjustment can be fixed on the main body 8. That is, the groove forming protrusion 11 according to the present embodiment is detachable from the base body 7, and in other words, the position of the groove forming protrusion 11 is changed with respect to the base body 7 in other words along the width direction of the roller 32. It can be adjusted freely. Therefore, for example, in the case where a groove is formed on the width direction end side (road shoulder) of the road surface R, by adjusting the position of the groove forming protrusion 11 so as to approach one side in the width direction of the roller 32, A part of the roller 32 does not protrude from the road shoulder, and the groove can be formed while the load roller 30 is traveling stably.

  The engaging portions 9 </ b> A and 9 </ b> B formed on the base body 7 protrude at both ends of the main body portion 8 so as to bend toward the rotation center of the roller 32. Bolt insertion holes 10 are formed in the engaging portions 9A and 9B, respectively. In the bolt insertion hole 10, the groove forming body fixing bolt 13 is inserted from the surface thereof toward the side surfaces 34 </ b> A; 34 </ b> B of the roller 32. The groove forming body fixing bolt 13 is a fixing means for firmly fixing the groove forming body 5 to the roller 32. The tip of the groove forming body fixing bolt 13 is screwed into the groove forming body fixing nut 15 disposed on the side surfaces 34A; 34B of the roller 32. The groove forming body fixing nut 15 is attached to the peripheral side of the side surfaces 34A; 34B of the roller 32 by, for example, welding. A plurality of the groove forming body fixing nuts 15 are arranged along the circumferential direction of the roller 32 with a predetermined interval.

  When fixing the groove forming body 5 to the roller 32, one of the groove forming body fixing nuts 15 is selected from the plurality of groove forming body fixing nuts 15 arranged along the circumferential direction of the side surfaces 34A; 34B. Thus, one groove forming body 5 may be fixed via the groove forming body fixing bolt 13, and it is not necessary to fix all the groove forming bodies 5 connected by the connecting portion 3 to the roller 32. On the other hand, if a plurality of groove forming body fixing nuts 15 are arranged in advance along the circumferential direction of the side surfaces 34A; 34B, one groove forming body is used regardless of the rotation angle (workable range) of the roller 32. Since 5 can be fixed at an arbitrary position, the efficiency of the mounting operation can be improved.

  Next, the groove forming protrusion 11 that is detachably provided on the main body 8 of the base body 7 will be described. As shown in FIGS. 3 and 4A, the groove forming protrusion 11 has a trapezoidal shape in which the cross section along the width direction of the roller 32 and the cross section perpendicular to the width direction are both. Then, the groove forming protrusion 11 having such a shape is brought into contact with the road surface R and compacted, whereby a groove S having the same shape as the outer shape of the groove forming protrusion 11 is formed on the road surface R. As shown in FIG. 4A, the trapezoidal groove forming protrusion 11 in this example is formed on the stepping end side that comes into contact with the road surface R first when the roller 32 rotates in the direction indicated by the arrow. The angle θ1 of the corner portion is set to 120 °, and the angle θ2 of the corner portion on the kicking end side that comes into contact with the road surface R later is set to 105 °. The angle can be appropriately set in consideration of the biting efficiency with respect to the road surface R and the separation efficiency after biting.

  Also, as shown in FIGS. 4B to 4D, the shape of the cross section orthogonal to the width direction of the roller 32 in the groove forming protrusion 11 is a polygonal shape such as a triangular shape, a quadrangular shape (rectangular shape), or A semicircular shape or the like may be used, and can be arbitrarily set according to the shape of the groove S to be formed on the road surface R. Further, as shown in FIG. 3, in the groove forming projection 11, the surface facing the surface 7A of the base body 7 is screwed with a fastening means such as a countersunk bolt inserted through the bolt insertion hole 8A. A plurality of bolt holes 11A are formed. The intervals between the plurality of bolt holes 11A coincide with the intervals between the plurality of bolt insertion holes 8A described above, and when adjusting the position of the groove forming protrusion 11, each bolt hole 11A and each The bolt insertion hole 8A may be aligned and a fastening means such as a countersunk bolt may be screwed in.

[Restraining part]
FIG. 5A is an enlarged cross-sectional view of both end portions in the length direction of the connecting portion 3. As above-mentioned, the connection part 3 is wound so that the whole region 32A of the roller 32 may be coat | covered. And in this embodiment, the one end part 3B and the other end part 3C of the connection part 3 after winding are connected via the restraint part 20 in the state superimposed on the surrounding surface 32A. As shown in the figure, the constraining portion 20 has bolt holes 22 formed at both end portions in the width direction on the circumferential surface 32A of the roller 32, and at both end portions in the width direction at one end portion 3B and the other end portion 3C of the connecting portion 3. The bolt insertion holes 24 and 26 are respectively formed, and fastening means such as a countersunk bolt that is inserted through the bolt insertion holes 24 and 26 and screwed into the bolt holes 22 formed on the peripheral surface 32A.

  In order to connect the one end part 3B and the other end part 3C of the connecting part 3 after winding by the restraint part 20 having the above-described configuration, the bolt insertion hole 24 formed on the one end part 3B side and the one end part 3B above After positioning the bolt insertion hole 26 formed on the other end portion 3 </ b> C side, which is overlapped with the screw 32, a fastening means such as a countersunk bolt is screwed into the bolt hole 22 formed on the circumferential surface 32 </ b> A of the roller 32. do it. By such a restraining part 20, the one end part 3B and the other end part 3C of the connecting part 3 are connected to each other so as to form an annular shape, and a plurality of grooves disposed on the connecting part 3 with a predetermined interval. The formed body 5 is restrained so as not to rotate on the peripheral surface 32 </ b> A of the roller 32.

  In addition, as a structure of the restraint part 20 which restrains the several groove | channel formation body 5, it is not limited to the said form, For example, it is good also as a form shown in FIG.5 (b). The configuration of the restraining portion 20 shown in FIG. 5 (b) is that a configuration capable of connecting the other end portion 3C to the base body 7 of the groove forming body 5 arranged on the one end portion 3B side of the connecting portion 3 is added. Different. Specifically, the restraining portion 20 in this example is inserted into the bolt hole 28 formed on the other end 3 </ b> C side of the connecting portion 3, the bolt insertion hole 29 formed in the base body 7, and the bolt insertion hole 29. And a fastening means such as a countersunk bolt screwed into the bolt hole 28. In this example, the base body 7 of the groove forming body 5 is arranged on the connecting portion 3 such that a half portion thereof is fixed to the one end portion 3B side by welding or the like and the other portion protrudes to the other end portion 3C side. ing.

  In order to connect the one end 3B and the other end 3C of the connecting part 3 after winding by the restraining part 20 having the above-described configuration, the one end 3B of the connecting part 3 is connected between the base body 7 and the peripheral surface 32A. After making the other end 3C abut, the bolt hole 28 formed in the other end 3C of the connecting portion 3 is connected to a fastening means such as a countersunk bolt through the bolt insertion hole 29 formed in the base body 7. Just screw it in. If the constraining portion 20 has such a configuration, the plurality of groove forming bodies 5 are constrained to be non-rotatable on the circumferential surface 32A of the roller 32, and the one end 3B and the other end of the connecting portion 3 Since the portion 3C is in a state of being abutted without overlapping, there is no slight step due to the overlap on the peripheral surface 32A of the roller 32 in comparison with the restraining portion 20 shown in FIG. R can be compacted with higher accuracy.

  Next, another embodiment of the road surface groove forming tool 1 will be described. In the following description, the same reference numerals are used for the same configurations as in the above-described embodiment, and a part or all of the description may be omitted.

[Embodiment 2]
[Overall configuration of road surface groove forming tool]
FIG. 6 is a schematic perspective view showing an overall configuration of a road surface groove forming tool 1 according to another embodiment. In the present embodiment, the connecting portion 3 is constituted by a pair of connecting means 40A; 40B, and is extended along the extending direction of the pair of connecting means 40A; 40B, and spanned by the connecting means 40A; 40B. The difference is that a plurality of groove forming bodies 5 are connected to each other.

[About connecting part]
FIG. 7 is a side view showing a connection state between one groove forming body 5 and the connecting means 40A; 40B.
As shown in the figure, the connecting means 40 </ b>A; 40 </ b> B is configured by a roller chain 42 extending along the circumferential direction of the roller 32. In addition, as connection means 40A; 40B, the wire etc. which a plurality of fine wires were twisted together other than a roller chain may be sufficient. As shown in the figure, the roller chain 42 and the groove forming body 5 are connected via joint parts 44A; 44B disposed in the engaging portions 9A; 9B of the base body 7. In the following description, one engaging portion 9A is taken as an example, and the roller chain located in one of the extending directions with the engaging portion 9A as a base point is referred to as a roller chain 42A, and the roller chain located in the other is referred to as a roller chain. The roller chain 42B will be described. The tip of one roller chain 42A is connected to the engaging portion 9A by a joint part 44A disposed on the inner surface side of the engaging portion 9A. The tip of the other roller chain 42B is connected to the engaging portion 9A by a joint part 44B that is also arranged on the inner surface side of the engaging portion 9A.

  That is, the roller chain 42A and the roller chain 42B are connected on the inner surface side of the same engaging portion 9A, and such a connection is made corresponding to each groove forming body 5, whereby a pair of connecting means. 40A; The groove forming body 5 is constructed between the roller chains 42 as 40B, and the road surface groove forming tool 1 having a structure in which a plurality of groove forming bodies 5 are connected along the extending direction of the roller chain 42 is configured. The

[Restraining part]
FIG. 8 is a schematic view showing an outline of the restraining portion 20 provided in the pair of connecting means 40A; 40B. As shown in the figure, the restraining portion 20 in this embodiment includes a chain bolt 50A provided on one end side of the roller chain 42, a chain bolt 50B provided on the other end side of the roller chain 42, and the chain bolt. 50A; It is comprised from the turnbuckle 50C which connects 50B non-detachable. The chain bolt 50A and the chain bolt 50B are connected to each other at both ends of the roller chain 42 through links.

  As shown in FIG. 8, the turnbuckle 50 </ b> C is a cylindrical body having a screw portion (female screw) that is screwed with a screw portion (male screw) of the chain bolt 50 </ b> A; 50 </ b> B on its inner peripheral surface. The threaded portion formed on the inner peripheral surface of the turnbuckle 50C is divided into a right-handed screw and a left-handed screw starting from the center of the extended length of the cylinder. For example, in the turnbuckle 50C, a chain bolt 50A having a male screw portion corresponding to the right screw can be screwed into the right screw portion, and the left screw and the left screw portion. A chain bolt 50B having a corresponding male thread portion can be screwed. Thus, the chain bolts 50A; 50B are connected to each other in the turnbuckle 50C, so that the connecting means 40A; 40B have an annular shape along the circumferential direction of the roller 32, and the plurality of groove forming bodies 5 are rollers. It will be in the state arrange | positioned by the predetermined pitch on 32 A surrounding surface 32A.

  FIG. 9 is a side view showing a state in which the road surface groove forming tool 1 according to the present embodiment is mounted on the roller 32. As shown in the figure, the roller chain 42 as the connecting means 40A; 40B according to the present embodiment is connected via the engaging portions 9A; 9B of the base body 7 constituting the groove forming body 5. Therefore, the roller chain 42 formed into an annular shape by the above-described restraining portion 20 has a polygonal shape (in the illustrated example, a dodecagon) on the peripheral sides of the side surfaces 34A and 34B of the rollers 32. The plurality of groove forming bodies 5 are restrained on the peripheral surface 32A. More specifically, since the roller chain 42 is in a tension state so as to form a polygonal shape by a plurality of linear portions, the binding force (pressing force) on the circumferential surface 32A applied to each groove forming body 5 is not dispersed. It becomes a vector which goes to the rotation center of the roller 32, and it becomes possible to restrain the plurality of groove forming bodies 5 to the circumferential surface 32A of the roller 32 extremely firmly. In other words, the restraining force applied to each groove forming body 5 changes according to the tension force applied to the roller chain 42 as the coupling means 40A; 40B that is in tension in the peripheral edges of the side surfaces 34A; 34B. In this example, the turn buckle 50C constituting the restraining portion 20 has a tension force acting on the roller chain 42 according to the fastening amount of the chain bolts 50A; 50B, in other words, a restraining force applied to each groove forming body 5. It functions as an adjusting means for adjusting.

  Hereinafter, the road surface groove forming tool 1 according to the second embodiment will be outlined as an example of the mounting procedure on the roller 32. First, as shown in FIG. 10A, a road roller 30 (not shown) is stopped at a predetermined position on the road surface R, and a part of the road surface groove forming tool 1 placed on a carriage or the like is used as a front wheel of the road roller 30. It arrange | positions on the roller 32 corresponded to. Specifically, the groove forming body is fixed to the bolt insertion hole 10 formed in the engaging portion 9A; 9B of the base body 7 in the groove forming body 5 located on one end side of the pair of connecting means 40A; 40B. The bolt 13 is inserted and screwed into the groove forming body fixing nut 15 disposed on the side surfaces 34A; 34B of the roller 32. Thereby, the groove forming body 5 on the one end side is firmly fixed to the roller 32.

  Next, as shown in FIG. 10 (b), the load roller 30 is moved backward, and the other groove forming body connected by the connecting means 40A; 40B with the fixed groove forming body 5 on the one end side as a base point. 5 are sequentially wound on the circumferential surface 32A. As the load roller 30 moves backward, all the groove forming bodies 5 connected by the connecting means 40A; 40B are arranged on the peripheral surface 32 at a predetermined pitch. Next, the chain bolt 50A disposed on one end side of each of the coupling means 40A; 40B and the chain bolt 50B disposed on the other end side thereof are connected via the turnbuckle 50C. At the time of the connection, it is important to adjust the fastening amount until the connecting means 40A; 40B composed of the roller chain 42 is in a tension state having a polygonal shape on the side surfaces 34A; 34B of the roller 32. Through the above steps, the plurality of groove forming bodies 5 connected by the connecting means 40 </ b> A; 40 </ b> B are firmly restrained on the peripheral surface 32 </ b> A of the roller 32. Then, by advancing the load roller 30 on which the mounting of the road surface groove forming tool 1 is completed on the road surface R, while intermittently forming grooves corresponding to the pitch of the plurality of groove forming bodies 5 on the road surface R, It becomes possible to compact the road surface R.

As described above, as described through the plurality of embodiments, according to the road surface groove forming tool 1 according to the present invention, the plurality of groove forming bodies 5 extend along the circumferential direction of the roller 32 when mounted on the roller 32. 3, as long as one groove forming body 5 is fixed to the roller 32, the other roller forming body 5 can be easily moved to the roller 32 in a very short time by the advance of the load roller 30. It can arrange | position with the predetermined pitch on the surrounding surface 32.
In addition, since the groove forming protrusion 11 constituting the groove forming body 5 is easily detachable from the base body 7, the interval between the grooves formed on the road surface R can be freely adjusted by increasing or decreasing the groove forming protrusion 11. Can be adjusted. In addition, the space | interval of the groove | channel formed in the road surface R can also be adjusted freely also by increase / decrease in the number of base bodies 7 itself with respect to the connection part 3. FIG.
Further, by configuring the connecting portion 3 from a pair of connecting means 40A and 40B that are spaced apart in the width direction of the roller 32, in the comparison with the road surface groove forming tool 1 according to the first embodiment, the handling performance at the time of attachment and removal operations. Improvement, weight reduction, and space saving can be achieved.

DESCRIPTION OF SYMBOLS 1 Road surface groove formation tool, 3 Connection part, 5 Groove formation body, 7 Base body, 11 Groove formation protrusion,
13 groove forming body fixing bolt, 15 groove forming body fixing nut, 20 restraining portion,
22; 28 bolt hole, 24; 26; 29 bolt insertion hole, 30 road roller,
32 roller, 32A peripheral surface, 34A; 34B side surface, 40A; 40B connecting means,
42 Roller chain, 44A; 44B Joint parts

Claims (1)

A plurality of groove forming bodies that can be mounted on the outer peripheral surface of the load roller, extend along the width direction of the roller, and are fixed to the side surface of the roller via bolts;
A pair of roller chains spaced apart in the width direction of the roller, and a connecting portion that connects the plurality of groove forming bodies to each other along the circumferential direction of the roller;
A constraining portion for connecting ends of the roller chain to each other, and constraining the plurality of groove forming bodies with respect to the outer peripheral surface of the roller;
A method for mounting a road surface groove forming tool comprising:
Among the plurality of groove forming bodies, fixing the groove forming body on one end side of the roller chain to the side surface of the roller via a bolt;
Advancing the load roller and winding the plurality of groove forming bodies on the roller;
Connecting the ends of the roller chain to each other, and tensioning the roller chain in the peripheral edge of the side surface of the roller;
A method for mounting a road surface groove forming tool comprising:

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