JP2010149784A - Installation structure of scraper device in vibrating roller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an installation structure of a scraper device in a vibration roller for restraining flapping of a blade and promotion of abrasion of the blade to a surface of a rolling wheel. <P>SOLUTION: A vibration tire roller is provided by installing a tire T and a vibration mechanism for vibrating this tire T in a frame 7 of a rear vehicle body 5 via vibration control rubber 8. The scraper device 11 having a blade 12 and a tension coil spring 23 for energizing so as to press the blade 12 to a surface of the tire T, is installed on a member on the unsprung mass side more than the vibration control rubber 8, for example, on a tire support bracket 9 arranged outside an outside surface of the tire T. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an attachment structure for a scraper device in a vibration roller such as a vibration tire roller.

  As a scraper device that scrapes off asphalt mixture or mud adhering to the surface of the rolling wheel of the rolling roller, a method of scraping with a blade pressed against the surface of the rolling wheel has been used frequently, and the conventional examples are patent documents. 1 and 2. Patent Documents 1 and 2 describe a technique in which a blade is supported on a vehicle body.

Japanese Utility Model Publication No. 6-8408 Japanese Patent Laid-Open No. 10-86798

  Among the rolling rollers, the vibrating roller compacts the road surface while vibrating the rolling wheel, so that the road surface can be compacted with high density. In this vibration roller, a vibration isolating rubber is provided between the vehicle body and the rolling wheel so that the vibration generated by the vibration mechanism built in the rolling wheel is not greatly transmitted to the vehicle body side. Due to the presence of the vibration isolating rubber, the vibration is not transmitted so much to the vehicle body side, and only the circumference of the rolling wheel on the unsprung mass side of the anti-vibration rubber vibrates with a predetermined amplitude value, thereby compacting the road surface.

  Thus, when a scraper device having a structure in which the blade is supported on the vehicle body side as described in Patent Documents 1 and 2 is applied to the vibration roller that vibrates around the rolling wheel with respect to the vehicle body, the surface of the blade As a result, the blade pressing force fluctuates and the blade pressing force fluctuates. As a result, the blade wear is accelerated when the pressing force increases, and the blade is likely to be caught on the surface of the compaction wheel. .

  The present invention was created to solve such problems, and provides a mounting structure for a scraper device in a vibrating roller capable of suppressing flapping of the blade with respect to the surface of the rolling wheel and suppressing blade wear promotion. It is an object.

  In order to solve the above-mentioned problems, the present invention provides a blade, and a blade for rotating the blade in a vibration roller in which a rolling wheel and a vibration mechanism for vibrating the rolling wheel are attached to a frame of a vehicle body via a vibration isolating member. A scraper device having an urging means for urging the pressing wheel to be pressed against the surface of the pressure wheel is attached to a member on the unsprung mass side with respect to the vibration isolating member.

  According to the mounting structure of the scraper device, the scraper device vibrates together with the rolling wheel, so that the relative position between the scraper device and the rolling wheel is constant. Therefore, fluttering of the blade against the surface of the compaction wheel is eliminated, the position of the blade against the surface of the compaction wheel and the pressing force are kept constant, and the blade wear that occurs when the pressing force increases is accelerated and rotated. A blade entrainment event that entrains the contact portion of the blade where the surface of the rolling wheel is flapping is suppressed.

  Further, the present invention is characterized in that the vibration roller is a vibration tire roller provided with tires arranged side by side in the vehicle width direction as the rolling wheel.

Since the tire is rich in elasticity, the surface of the tire is slightly dented by the pressing force of the blade. When it vibrates, the vibration amplitude may be larger than that of the vibration roller of the iron wheel, and the vibration of the blade dances relative to the tire, and the surface of the tire and the blade are vibrated with each other. Turned out to be. In addition, since the frictional force between the surface of the tire formed of rubber and the blade is larger than the frictional force between the surface of the iron wheel and the blade, the above-described blade entrainment event is likely to occur.
On the other hand, if the present invention is applied to a vibrating tire roller, the flapping of the blade against the tire surface is eliminated, the blade position and the pressing force against the tire surface are kept constant, the blade wear is accelerated, the tire surface The blade entrainment event is suppressed.

  In the scraper device, the stopper that restricts the movement of the blade, which is pressed against the surface of the tire by the biasing unit, in the pressing direction is provided on the unsprung mass side of the vibration isolation member. A member is provided.

Even if the blades are placed on the same unsprung mass side as the vibrating tire, they are not completely fixed to each other, so the relative vibration of the blade with respect to the tire is reduced but still exists. Further, as described above, the tire formed of rubber has a large frictional force.
In contrast, by providing a stopper that restricts the movement of the blade pressed against the surface of the tire in the pressing direction, excessive pressing movement of the blade against the tire due to the relative vibration can be further suppressed, and the blade is caught. And entrainment events can be further suppressed.

  Further, in the present invention, tire support brackets that are connected to the vibration isolation members on the unsprung mass side are respectively disposed outside the outer side surfaces of the tires at both ends, and the scraper device is attached between the two tire support brackets. It is characterized by.

  According to the attachment structure of the scraper device, the tire support bracket located outside the outer surface of the tire is used as the attachment portion, so that the attachment structure is simple and excellent in assemblability.

  Further, according to the present invention, the blade is configured to be rotatable so as to be separated from the surface of the rolling wheel, and a rotation shaft thereof includes a watering pipe for spraying a liquid agent on the surface of the rolling wheel. It is characterized by.

  According to this attachment structure of the scraper device, the watering pipe can have both the original watering function and the function of the rotating shaft of the blade, and the number of parts can be reduced and the assembling can be simplified.

  According to the present invention, in the scraper device of the vibration roller, fluttering of the blade against the surface of the compaction wheel is prevented, the position of the blade and the pressing force against the surface of the compaction wheel are kept constant, and the pressing force increases. The acceleration of blade wear and the occurrence of blade entrainment on the surface of the rolling wheel are suppressed.

  FIG. 1 is a side view of a vibration roller to which the present invention is applied, FIG. 2 is a rear view of the vibration roller, FIG. 3 is a side view around a compaction wheel on the rear wheel side, and FIG. 4 is an enlarged view of a scraper device according to the present invention. It is a side view. In the vibrating roller 1 shown in FIG. 1, a front vehicle body 4 provided with a rolling wheel 2 and a rear vehicle body 5 provided with a rolling wheel 3 are connected in an articulated manner by a connecting portion 6. As shown in FIG. 2, the vibration roller 1 of the present embodiment includes a plurality of tires T arranged side by side in the vehicle width direction as the rolling wheel 3 as a rear wheel, and a vibration mechanism that vibrates the plurality of tires T. This is a so-called vibrating tire roller (not shown). In the following, the present invention will be described with respect to the rolling wheel 3 as a rear wheel, but the present invention can also be applied to the rolling wheel 2 as a front wheel. The vibration mechanism may be a known mechanism such as those described in JP-A-9-31912 and JP-A-2003-184022, and will not be described in detail because it does not fall within the spirit of the present invention.

  As shown in FIG. 2, frames 7 are suspended and fixed substantially vertically on both side surfaces of the rear vehicle body 5, and on the inner surface side of the frame 7, an axle is sandwiched as shown in FIGS. 1 and 3. A tire support bracket 9 is attached via a pair of vibration isolation members (vibration isolation rubbers 8) that are spaced apart from each other. Of course, the tire support bracket 9 is a bracket for axially supporting the tire T, and specifically supports the tire T through the vibration mechanism. The anti-vibration rubber 8 is a member having a function of reducing the transmission of vibration from the vibration mechanism to the vehicle body side, and has a substantially cylindrical shape. The frame 7 and the tire support bracket 9 It attaches with the volt | bolt 10 with respect to it. The frame 7 side and the oscillating rolling wheel 3 are connected by an anti-vibration rubber 8, and the anti-vibration rubber 8 made of an elastic body is sandwiched between the frame 7 side and the sprung mass side. The wheel 3 side is the unsprung mass side described in the claims.

  As shown in FIG. 3, the tire support bracket 9 has a central portion of the upper edge formed in a mountain shape, and a notch for exposing the periphery of the tire T is formed in the central portion of the lower edge. It is made of a horizontally elongated plate member having a substantially rectangular shape, and is attached to the frame 7 around the front end and around the rear end via the above-described anti-vibration rubber 8. In order to stably support the tire T, it is necessary to secure a separation distance between the anti-vibration rubbers 8, that is, the length in the front-rear direction of the tire support bracket 9, while the tire T has a small inner diameter so that the tire support is supported. It is difficult to position the bracket 9 inside the tire T. Therefore, the tire support bracket 9 is located outside the outer surface of the tire T.

  In the present invention, a scraper device 11 having a blade 12 and an urging means 13 for urging the blade 12 to be pressed against the surface of the tire T is provided with a vibration isolating rubber 8 against the frame 7. The main feature is that it is attached to a member on the unsprung mass side on the rolling wheel 3 side. In the present embodiment, the scraper device 11 is attached between both tire support brackets 9.

  A support side plate 14 for attaching the scraper device 11 is attached to the inner surface side around the rear end of each tire support bracket 9. Each support side plate 14 extends upward, and the periphery of the upper rear end thereof is located obliquely above the rear side of the tire T as seen from FIG. 3, and extends over the upper rear ends of both support side plates 14. A rotation shaft for rotating the blade 12 about the axis in the vehicle width direction is suspended. This rotating shaft is the watering pipe 15 in this embodiment. FIG. 5 is a view showing an attachment structure around the end of the water spray pipe 15 with respect to the support side plate 14. A tube member 16 is fixed to the support side plate 14, and the end of the water spray pipe 15 is rotatable on the tube member 16. It is supported by.

  A plurality of spray nozzles 17 that spray the liquid agent in a mist toward the surface of each tire T are attached to the water spray pipe 15. Reference numeral 18 denotes a hose that supplies the liquid agent to the watering pipe 15. The liquid agent is sprayed to prevent the asphalt mixture from adhering to the surface of the tire T, and the mineral oil and water are mixed using mere water or an asphalt adhesion inhibitor made of mineral oil and an emulsifier. The asphalt adhesion preventive agent is selected as appropriate according to working conditions, environmental conditions, and the like.

  A blade mounting plate 19 is attached to the water spray pipe 15 over almost the entire length thereof. The blade mounting plate 19 is a long member having an L-shaped side sectional view, and one side thereof is fixed to the sprinkling pipe 15 by welding or the like, and a plurality of blades corresponding to each tire T are provided on the other side. 12 is detachably attached by a bolt 21. A handle 22 is fixed on the other side of the blade mounting plate 19.

  The blade 12 is made of a plate-like member whose edge contacting the surface of the tire T is formed in a curved shape in accordance with the curved surface of the tire T, and is formed of a synthetic resin material or a rubber material. However, in the present invention, the material of the blade 12 is not particularly limited, and may be a metal plate such as an iron plate, a fiber body that is hardened with an adhesive, or the like.

  Both ends on the other side of the blade mounting plate 19 extend outward in the vehicle width direction from the support side plate 14, and the urging force is provided between the end of the blade mounting plate 19 and the support side plate 14 side. A tension coil spring 23 as a means 13 is stretched. Specifically, a bolt 25 is screwed to a bracket 24 provided on the outer surface side of the support side plate 14 so that the position of the bolt 25 can be adjusted in the vehicle longitudinal direction, and a spring mounting portion of a mounting plate 26 fixed to the bolt head. A tension coil spring 23 is stretched between the (fixed side spring mounting portion 26 a) and the spring mounting portion (movable side spring mounting portion 19 a) at the end of the blade mounting plate 19. Thereby, the urging force of the tension coil spring 23, that is, the pressing force of the blade 12 against the tire T is adjusted by changing the screwing position of the bolt 25 with respect to the bracket 24.

  For the purpose of restricting the movement in the pressing direction of the blade 12 pressed against the tire T by the urging force of the tension coil spring 23 (the movement in the clockwise direction around the central axis X in FIG. 4), the bracket 24 includes A stopper 20 that abuts against the end of the blade mounting plate 19 is provided. The stopper 20 comprises a bolt that is screwed to the frame 7 so as to be positionally adjustable in the vehicle longitudinal direction with respect to the unsprung mass side bracket 24 closer to the rolling wheel 3 than the anti-vibration rubber 8. It contacts the end of the mounting plate 19. The stopper 20 ensures an appropriate pressing force of the blade 12 and holds the position of the blade 12 so that the blade 12 does not bite into the surface of the soft tire T.

  The operation of the scraper device 11 having the above configuration will be described. At the time of rolling, the scraper device 11 is in a position indicated by a solid line in FIG. 4, and the tension coil spring 23 is a line connecting the fixed-side spring mounting portion 26 a and the rotation axis of the blade 12, that is, the central axis X of the water spray pipe 15. Since the movable spring mounting portion 19a is located on one side (lower side in FIG. 4), the blade 12 is urged to be pressed against the surface of the tire T. The watering nozzle 17 is positioned so as to face the surface of the tire T. Thereby, the blade 12 scrapes off asphalt mixture or mud adhering to the surface of the tire T, and the liquid agent is sprayed from the water spray nozzle 17 toward the surface of the tire T.

  When the vehicle is not transported or not, as shown by the phantom line in FIG. 4, when the handle 22 is gripped and the blade mounting plate 19 is rotated upward, the center of the fixed spring mounting portion 26a and the water spray pipe 15 is When the movable spring mounting portion 19a is displaced to the other side (upward in FIG. 4) with the line connecting the axis X as a boundary, the urging force of the tension coil spring 23 causes the blade 12 to move away from the surface of the tire T. The blade 12 is held at the position of the imaginary line in FIG. 4 by switching to the urging force and abutting the handle 22 or the like against a stopper (not shown).

  As described above, in the vibration tire roller (vibration roller R), if the scraper device 11 is attached to a member on the unsprung mass side with respect to the vibration isolating rubber 8 with respect to the frame 7, the scraper device 11 vibrates together with the tire T. Therefore, the relative position between the scraper device 11 and the tire T is constant. Therefore, flapping of the blade 12 with respect to the surface of the tire T is eliminated, the position of the blade 12 and the pressing force with respect to the surface of the tire T are kept constant, and acceleration of wear of the blade 12 and the tire T that occurs when the pressing force increases. The event of the blade 12 being caught on the surface of the tire T is suppressed.

  In addition, if the stopper 20 that restricts the movement of the blade 12 pressed against the surface of the tire T in the pressing direction is provided, excessive pressing of the blade 12 against the tire T can be suppressed, and the blade 12 can be caught. Entrainment events can be further suppressed.

  Further, in a vibrating tire roller in which a tire support bracket 9 connected to the anti-vibration rubber 8 on the unsprung mass side is disposed outside the outer surface of the tire T at both ends, the scraper device 11 is placed between the two tire support brackets 9. If it is set as the structure to attach, since the tire support bracket 9 located in the outer surface outer side of the tire T is utilized as an attaching part, it will be the attachment structure of the scraper apparatus 11 which was simple and excellent in assembling property. In particular, if the scraper device 11 is passed between the tire support brackets 9 with the support side plates 14 interposed, the present invention can be easily applied to the preformed tire support brackets 9.

  The blade 12 is configured to be rotatable so as to be separated from the surface of the tire T. If the blade 12 includes a water spray pipe 15 for spraying a liquid agent on the surface of the tire T as its rotation axis, The water spray function and the function of the rotating shaft of the blade 12 can be combined, and the number of parts can be reduced and the assembly can be simplified.

  The preferred embodiment of the scraper device mounting structure according to the present invention has been described above. However, each component means is not limited to the contents described in the drawings, and can be appropriately changed in design without departing from the spirit of the present invention. It is.

It is a side view of the vibration roller to which the present invention is applied. It is a rear view of the vibration roller to which the present invention is applied. It is a side view around the compaction wheel on the rear wheel side. It is an enlarged side view of the scraper device according to the present invention. It is the attachment structural view around the edge part of the watering pipe with respect to a support side plate.

Explanation of symbols

1 Vibrating roller 3 Rolling wheel 5 Rear car body (car body)
7 Frame 8 Anti-vibration rubber (anti-vibration member)
9 Tire support bracket 11 Scraper device 12 Blade 13 Biasing means 14 Support side plate 15 Sprinkling pipe 19 Blade mounting plate 19a Movable side spring mounting portion 20 Stopper (bolt)
23 Tension coil spring 26a Fixed side spring mounting portion T Tire

Claims (5)

In a vibration roller in which a rolling wheel and a vibration mechanism that vibrates the rolling wheel are attached to a frame of a vehicle body via a vibration isolation member,
A scraper device having a blade and an urging means for urging the blade to be pressed against the surface of the rolling wheel is attached to a member on the unsprung mass side with respect to the vibration isolating member. Mounting structure of scraper device on vibrating roller.   2. The scraper device mounting structure according to claim 1, wherein the vibration roller is a vibration tire roller provided with tires arranged in parallel in the vehicle width direction as the rolling wheel. 3.   The scraper device includes a stopper that restricts movement of the blade pressed against the surface of the tire by the urging unit in the pressing direction on a member on the unsprung mass side of the vibration isolating member. The mounting structure of the scraper device in the vibration roller according to claim 2. Tire support brackets connected to the anti-vibration members on the unsprung mass side are arranged outside the outer side surfaces of the tires at both ends,
The mounting structure of the scraper device in the vibration roller according to claim 2 or 3, wherein the scraper device is mounted between the two tire support brackets. The blade is configured to be rotatable so as to be separated from the surface of the rolling wheel,
The structure for mounting a scraper device in a vibrating roller according to any one of claims 1 to 4, wherein the rotating shaft comprises a watering pipe for spraying a liquid agent on the surface of the rolling wheel. .

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