JP4834495B2 - Asphalt finisher - Google Patents

Description

  The present invention relates to an asphalt finisher provided with a winch for towing a roller wheel disposed behind the asphalt finisher main body at the upper part of the asphalt finisher main body traveling on a base surface.

When constructing asphalt pavement, after asphalt mixture (heated asphalt mixture) is spread with an asphalt finisher, the asphalt mixture is compacted with a roller vehicle. Since the roller car can run on a flat road surface, it runs independently of the asphalt finisher and compacts the asphalt mixture. However, when asphalt pavement is constructed on a steep slope such as a dam body, the asphalt finisher and roller vehicle cannot be driven by themselves and are towed by a winch. The asphalt finisher is pulled up by a large winch porter (self-propelled towing device) provided on the top of the slope. On the other hand, the roller wheel is pulled up by a winch provided at the top of the asphalt finisher. The winch at the top of the asphalt finisher is provided so as to be movable in the width direction of the asphalt finisher, and the roller wheel can also move in the width direction of the asphalt finisher.
JP 2004-60261 A (FIG. 2)

  However, the wire rope extending from the winch provided on the upper part of the conventional asphalt finisher extends obliquely rearward and lower and is connected to the tip of the roller wheel. Therefore, the closer the roller car is to the asphalt finisher, the steeper direction of the wire rope becomes steep with respect to the surface of the construction surface, and the upward force on the roller vehicle (force in the direction away from the construction surface) increases. Since the weight of the mixed material is reduced, the compaction capacity of the roller car is reduced, and a large amount of force is required for towing, so there is a problem that the roller car cannot be pulled to the vicinity of the asphalt finisher. . A winch that pulls a heavy roller wheel is relatively heavy.If this winch is moved in the width direction on an asphalt finisher, the weight balance becomes worse and the load distribution of the asphalt finisher body is biased. There was also a problem that the leveling condition of the asphalt composite material deteriorated.

  Therefore, the present invention was devised in view of these problems, and it is possible to draw a roller wheel to the vicinity of the asphalt finisher main body and to improve the quality of the asphalt composite material without breaking the weight balance of the asphalt finisher main body. It is an object to provide an asphalt finisher that can perform leveling.

The invention according to claim 1 for solving the above-mentioned problem is asphalt provided with a winch for towing a roller wheel disposed behind the asphalt finisher main body at the upper part of the asphalt finisher main body traveling on the base surface. In the finisher, first guide means for guiding a wire rope extending from the winch downward is provided behind the winch, and a wire rope extending from the first guide means is guided rearwardly under the first guide means. Two guide means are provided so as to be movable in the width direction of the asphalt finisher body, and the first guide means rotates along the traveling direction of the asphalt finisher body and guides the wire rope downward. And the wire rope extending from the first winding pulley. A first holding pulley disposed on both sides of the wire rope and pressing the side surface of the wire rope in the width direction, and the second guide means extends on both sides of the wire rope extending from the first holding pulley. A second holding pulley that is disposed and presses the side surface in the width direction of the wire rope, and a second winding pulley that rotates along the traveling direction of the asphalt finisher body and guides the wire rope extending from the second holding pulley to the rear. which is a feature and be a luer scan Middelfart finisher that was equipped with a door.

According to such a configuration, since the wire rope is guided downward by the first guide means and then guided backward by the second guide means, the pulling direction of the wire rope is substantially parallel to the surface of the construction surface. Therefore, even if the roller wheel is pulled to the vicinity of the asphalt finisher main body, the roller wheel is not pulled in the direction of lifting from the surface of the asphalt finish, and the compaction ability does not decrease. Also, most of the pulling force of the wire rope can be used for towing, and the roller wheel can be easily pulled to the vicinity of the asphalt finisher. In addition, the winch provided at the top of the asphalt finisher does not move in the width direction, so the weight balance of the asphalt finisher body will not be disrupted, and the leveling condition of the asphalt mixture should always be kept good. Can do. Furthermore, even if the second guide means is moved in the width direction by pressing the width direction side surface of the wire rope with the first holding pulley and the second holding pulley, the wire rope is moved with the first holding pulley and the second holding pulley. It is guided and does not deviate from the cores of the first winding pulley and the second winding pulley. Therefore, it can prevent reliably that a wire rope remove | deviates from a 1st winding pulley and a 2nd winding pulley.

The invention according to claim 2, wherein the first guide means is an asphalt finisher according to claim 1, characterized in that provided at the center in the width direction of the asphalt finisher main body.

  According to such a configuration, the weight balance in the width direction of the asphalt finisher body is good, and the second guide means moves symmetrically on both sides in the width direction of the first guide means, so the first guide means to the second guide The wire rope can be smoothly fed to the means.

The invention according to claim 3 is the asphalt finisher according to claim 1 or 2 , wherein the second guide means is disposed above a screed provided in a rear portion of the asphalt finisher main body. is there.

  According to such a configuration, the second guide means is installed at the rearmost part of the asphalt finisher main body, and the roller wheel can be drawn efficiently.

The invention which concerns on Claim 4 contact | abuts to the joint part of the said asphalt compound material spread along the edge part of the existing asphalt pavement adjacent to the said base surface, and finishes the joint part of the said asphalt compound material The asphalt finisher according to any one of claims 1 to 3 , wherein a partial finishing device is provided in front of the roller wheel.

  According to such a configuration, the asphalt can be laid more satisfactorily because it can be compacted by the roller wheel immediately after finishing the joint part by the joint part finishing device.

  According to the present invention, the roller wheel can be drawn to the vicinity of the asphalt finisher main body, and an excellent effect that the asphalt finish can be satisfactorily leveled without breaking the weight balance of the asphalt finisher main body. Demonstrate.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the description, the same elements are denoted by the same reference numerals, and redundant description is omitted. In addition, about a direction, it demonstrates on the basis of the front-back direction of a asphalt finisher, left-right (width direction), and up-down.

  FIG. 1 is a side view showing a construction situation using the asphalt finisher according to the present embodiment. FIG. 2 is a side view showing the asphalt finisher according to the present embodiment. FIG. 3 is a plan view showing the asphalt finisher according to the present embodiment. FIG. 4 is a rear view showing the asphalt finisher according to the present embodiment. FIG. 5 is a schematic perspective view showing the first guide means and the second guide means of the asphalt finisher according to the present embodiment. FIG. 6 is a side view of the joint finishing apparatus.

  As shown in FIG. 1, in this embodiment, asphalt finisher AF is used to form an asphalt mixture AG as a water shielding layer on an inclined base surface K of the fill dam FD (hereinafter sometimes referred to as “slope N”). An example will be described in the case of spreading and leveling.

  Here, the asphalt finisher AF is pulled up on the slope N of the fill dam FD by the self-propelled towing device 9. In addition, a roller wheel R for placing and solidifying the asphalt mixture AG is disposed behind the asphalt finisher AF. The roller vehicle R is towed by the asphalt finisher AF.

  The fill dam FD is a type of dam that uses rocks, gravel, sand, and soil materials as the dam body material and resists water pressure by the frictional force between the ground and the dam body. The fill dam FD of the present embodiment is a surface water-impervious rock-fill dam having a water-impervious layer made of asphalt composite AG on a slope N on the upstream side of the bank body.

  The self-propelled towing device 9 includes a winch 91 that winds and feeds the wire 92, and a crawler 93 as a traveling device. The self-propelled towing device 9 is a device that raises and lowers the asphalt finisher AF on the inclined base surface K by winding and feeding the wire 92 by the winch 91. The self-propelled towing device 9 can change the suspension position of the asphalt finisher AF by moving the top end of the fill dam FD using the crawler 93.

  As shown in FIGS. 2 and 3, the asphalt finisher AF is a device for spreading and leveling the asphalt mixture AG on the base surface K. The asphalt finisher main body 10 for traveling on the base surface K, and the base surface A base surface heating device 11 for heating K, an asphalt composite material supply device 12 for supplying asphalt composite material AG on the heated base surface K, and an asphalt composite material AG supplied on the base surface K are spread and leveled. The asphalt composite finishing apparatus 13 is mainly provided.

  The asphalt finisher main body 10 includes wheels 14, 14... For traveling on the base surface K, an engine (not shown) for driving the wheels 14, an operating device 15 such as a handle, a driver seat 16, It has. In the present embodiment, the operating device 15 and the driver's seat 16 are disposed on the right rear of the upper portion of the asphalt finisher body 10. Further, the asphalt finisher body 10 includes a traction tool 17 for connecting a wire 92 from the self-propelled traction device 9 (see FIG. 1) in front of the upper part of the vehicle body. A winch 20 for towing the roller wheel R is provided at the top of the asphalt finisher body 10. The roller wheel R has rollers 95 for compacting the asphalt composite AG in front and rear, and two wire ropes 23 are connected to a traction tool 96 provided at the tip. The traction tool 96 is formed so as to expand in the width direction, and the wire rope 23 is connected to both ends thereof.

  At the rear part of the asphalt finisher main body 10, a screw spreader 13a and a screed 13b constituting an asphalt composite finishing apparatus 13 are provided. The screw spreader 13a spreads the asphalt mixture AG supplied on the base surface K to a predetermined width. The screw spreader 13a is a screw having a length dimension substantially equal to the spread level D (see FIG. 3) of the asphalt composite material AG, and is rotatably disposed at the rear end of the asphalt finisher body 10. As the screw spreader 13a rotates, the asphalt mixture AG supplied on the base surface K is spread over a predetermined width. The screed 13b spreads and levels the asphalt mixture AG spread on the base surface K to a predetermined layer thickness. The screed 13b is attached to a leveling arm 13c extending rearward from both side surfaces of the asphalt finisher body 10, and is disposed further rearward of the screw spreader 13a. The screed 13b is configured to be extendable and contractible in the width direction, and is set to have a width dimension substantially equal to the spread level D of the asphalt composite material AG.

  As shown in FIGS. 2, 3, and 4, the winch 20 is disposed at the center in the width direction of the frame 21 formed on the top of the asphalt finisher main body 10. The frame 21 is formed to extend from above the asphalt mixture supply device 12 to above the screed 13b. The winch 20 has two reels 22 and 22 which are coaxially and integrally formed. These reels 22 and 22 are rotatably provided along the traveling direction of the asphalt finisher main body 10, and the winding direction of the wire rope 23 connected to the roller wheel R and the delivery thereof by a rotational driving device such as a motor. It is configured to be rotated so as to be switchable in a direction.

  A first guide means 30 for guiding the wire rope 23 extending from the winch 20 downward is provided behind the winch 20, and the wire rope 23 extending from the first guide means 30 is provided below the first guide means 30. The second guide means 40 is provided for guiding the rearward direction. The second guide means is provided so as to be movable in the width direction of the asphalt finisher body 10.

  As shown in FIGS. 4 and 5, the first guide means 30 is provided at the center of the asphalt finisher body 10 in the width direction at a position above the screed 13 b (see FIG. 4) at the rear of the frame 21. Yes. The first guide means 30 rotates along the traveling direction of the asphalt finisher body 10, and includes a first winding pulley 31 that guides the wire rope 23 downward, and a wire rope 23 that extends from the first winding pulley 31. The first holding pulley 33 is provided on both sides in the width direction and presses a side surface (side surface in the width direction) of the wire rope 23. The first winding pulley 31 is provided for each of the two wire ropes 23 and 23, and is disposed on a coaxial rotating shaft extending in the width direction of the asphalt finisher body 10. The first winding pulley 31 is guided downward by winding the wire rope 23 extending from the front at approximately 90 degrees. The first pressing pulley 33 is disposed on both sides of the wire rope 23 in the width direction, but in the present embodiment, the arrangement interval between the two wire ropes 23 is substantially equal to the diameter of the first pressing pulley 33. The wire rope 23 is located in two gaps between the three first pressing pulleys 33, 33, 33 arranged in the width direction of the asphalt finisher body 10. That is, the central first pressing pulley 33 is also used as the first pressing pulley 33 of the wire ropes 23 on both sides. The first pressing pulleys 33, 33, 33 hold the wire ropes 23, 23 toward the position of the second guide means 40 moving in the width direction by pressing the wire ropes 23 from both sides in the width direction of the asphalt finisher body 10. Induce. That is, as shown in FIGS. 4 and 5, when the second guide means 40 is located on the left side of the first guide means 30, the wire ropes 23, 23 are connected to the first press pulleys 33, 33 on the left side thereof. The side surfaces are pressed (the wire ropes 23 and 23 are wound around the first pressing pulleys 33 and 33 on the left side thereof at a predetermined angle) and guided to the second guide means 40 side. In addition, when the 2nd guide means 40 is located in the right side rather than the 1st guide means 30, it will be in the state which the 2nd guide means showed with the broken line in FIG.

  The second guide means 40 is provided so as to be movable along a guide rail 44 that extends in the width direction of the asphalt finisher body 10 above the screed 13b. The guide rail 44 is configured by a square pipe, and a moving base material 45 is provided so as to surround the guide rail 44 from the rear. The moving base 45 is configured to move along the guide rail 44 by a driving source such as a hydraulic circuit. The second guide means 40 is arranged on both sides in the width direction of the wire rope 23 extending from the first holding pulley 33, and in the running direction of the second holding pulley 41 that holds the side surface in the width direction of the wire rope 23 and the asphalt finisher body 10. And a second winding pulley 43 that rotates along the second holding pulley 41 to guide the wire rope 23 backward. The second pressing pulley 41 and the second winding pulley 43 are respectively supported by the moving base material 45 and move integrally on the guide rail 44. Three second pressing pulleys 41 are arranged in the width direction of the asphalt finisher body 10 in the same manner as the first pressing pulley 33. The wire rope 23 is located in two gaps between the three second pressing pulleys 41, 41, 41. That is, the central second pressing pulley 41 is also used as the second pressing pulley 41 of the wire ropes 23 and 23 on both sides. The second pressing pulleys 41, 41, 41 guide the wire rope 23 from the first guide means 30 to the second winding pulley 43. That is, as shown in FIGS. 4 and 5, when the second guide means 40 is located on the left side of the first guide means 30, the wire ropes 23, 23 are connected to the second pressing pulleys 41, 41 on the right side thereof. The side surfaces are pressed (the wire ropes 23 and 23 are wound around the second holding pulleys 41 and 41 on the right side thereof at a predetermined angle) and guided to the second winding pulleys 43 and 43 side. The second winding pulley 43 is provided for each of the two wire ropes 23, 23 and is arranged on the same axis extending in the width direction of the asphalt finisher body 10. The second winding pulley 43 is guided backward by winding the wire rope 23 extending from above at approximately 90 degrees.

  As shown in FIG. 3, at one end in the width direction of the rear part of the asphalt finisher main body 10, there is a joint portion J between the existing asphalt pavement KAG adjacent to the base surface K and the asphalt composite material AG spread on the base surface K. A joint part finishing device 50 is provided that abuts and spreads the joint part J. The joint finishing device 50 is provided in front of the roller wheel R.

  As shown in FIG. 6, the joint part finishing device 50 is an alternative to the trowel finishing by human power, and is a joint part J of an asphalt mixture AG leveled along the existing asphalt pavement KAG (see FIG. 3). This is a device that abuts and finishes this. The joint part finishing device 50 includes a hot plate 50a for heating the joint part J, and a vibration generating part 50b for applying vibration to the joint part J and compacting it. The joint part finishing device 50 can, for example, come into contact with the existing asphalt pavement KAG (see FIG. 3) and the joint part J of the asphalt composite material AG, and can be finished by heating and compacting the joint part J. It is like that. Thereby, the edge part Kf of the existing asphalt pavement KAG and the joint part J will adhere firmly and sufficiently, and the water shielding will be further improved. The joint part finishing device 50 is attached to the screed 13b via the first arm 50c and the second arm 50d. One end 50f of the first arm 50c is fixed to the screed 13b. The other end 50g of the first arm 50c is bent upward. One end 50e of the second arm 50d is fixed to the upper end of the other end 50g of the first arm 50c so as to be rotatable in the horizontal direction. The horizontal rotation range of the second arm 50d is set to about ± 20 degrees with respect to the front-rear direction, for example. With such a support structure, the position where the second arm 50d is rotated in the horizontal direction and brought into contact with the joint portion J can be finely adjusted. In addition, a damper 50h for reducing vibration transmitted to the screed 13b is interposed between the joint finishing device 50 and the second arm 50d.

  When asphalt pavement with a slope N is performed using the asphalt finisher AF having the above-described configuration, first, as shown in FIG. The finisher AF is disposed so as to be suspended from the slope N of the fill dam FD. Then, by driving the winch 91 and winding the wire 92, the asphalt finisher AF is heated, supplied, and leveled while the asphalt finisher AF is lifted and run on the inclined base surface K. At the same time, the roller wheel R is connected to the asphalt finisher AF, the winch 20 is driven, the wire rope 23 is wound and sent out repeatedly, and the roller wheel R is moved up and down to compact the asphalt mixture AG. .

  At this time, since the wire rope 23 extending from the winch 20 is guided downward by the first guide means 30 and then guided backward by the second guide means 40, the tensile position of the wire rope 23 is lowered, and the wire rope The tensile direction of 23 is substantially parallel to the surface of the base surface K (slope N). Therefore, even if the roller wheel R is pulled to the vicinity of the asphalt finisher main body 10, the roller wheel R is not pulled in the direction of lifting from the surface of the asphalt composite material AG, and the compaction ability of the roller wheel R does not decrease. . Also, most of the pulling force of the wire rope can be used for towing, and mechanically efficient towing can be performed. Therefore, the roller wheel R can be drawn to the vicinity of the rear end of the asphalt finisher AF. As a result, the moving range of the roller wheel R is increased, the compaction efficiency is increased, and efficient compaction can be performed in a short time. Further, since the roller wheel R is moved in the width direction by moving the second guide means 40 in the width direction, the heavy winch 20 provided on the top of the asphalt finisher AF moves in the width direction. It is not necessary. Therefore, the weight balance of the asphalt finisher main body 10 is not lost, and the leveling condition of the asphalt composite material AG can always be maintained satisfactorily.

  The first guide means 30 includes a first winding pulley 31 and a first pressing pulley 33 provided so that the rotation shaft is orthogonal to the rotation axis of the first winding pulley 31, and the second guide means 40 includes a second winding pulley 43 provided so that the rotation axis is orthogonal to the rotation axis of the second pressing pulley 41, and the side surface of the wire rope 23 is connected to the first pressing pulley 33 and the second presser foot. By pressing with the pulley 41, the wire rope 23 can be reliably prevented from coming off from the first winding pulley 31 and the second winding pulley 43 even if the second guide means 40 is moved in the width direction. .

  In the present embodiment, two wire ropes 23 are provided, but the distance between the wire ropes 23 is matched with the diameter of the first pressing pulley 33 and the diameter of the second pressing pulley 41, so the wire rope The number of the first pressing pulley 33 and the second pressing pulley 41 between the two is only one, and the number of parts can be reduced.

  Furthermore, since the first guide means 30 is provided in the center of the asphalt finisher body 10 in the width direction of the frame 21, the weight balance in the width direction of the asphalt finisher body 10 is improved. Moreover, since the 2nd guide means 40 moves symmetrically to the width direction both sides of the 1st guide means 30, the sending out of the wire rope 23 from the 1st guide means 30 to the 2nd guide means 40 can be performed smoothly. it can.

  Further, since the second guide means 40 is disposed above the screed 13b provided at the rear part of the asphalt finisher body 10, the second guide means 40 is installed at the rearmost part of the asphalt finisher body 10, The roller vehicle R can be drawn efficiently.

  Furthermore, in the present embodiment, the joint portion J of the asphalt composite material AG is brought into contact with the joint portion J of the asphalt composite material AG spread along the edge of the existing asphalt pavement KAG adjacent to the base surface K. Since the joint finishing device 50 is provided in front of the roller wheel R, the asphalt composite AG of the joint J is spread and leveled immediately after the joint is finished with the joint finishing device to improve the adhesion. Since it can be compacted with a roller vehicle, the asphalt laying state is further improved.

  As mentioned above, although embodiment of this invention was described in detail with reference to drawings, this invention is not limited to this, In the range which does not deviate from the main point of invention, it can change suitably. For example, in the present embodiment, the first guide means 30 and the second guide means 40 are configured by a plurality of pulleys having different arrangement directions, but the present invention is not limited to this, and the direction of the wire rope 23 is determined. Any change can be made as appropriate.

  Moreover, in this Embodiment, although the two wire ropes 23 are provided, it is not restricted to this, One or three or more may be sufficient. However, it is preferable to use two wire ropes 23 because the left and right balance of the roller wheel R can be maintained with the minimum wire rope 23.

It is the side view which showed the construction condition using the asphalt finisher which concerns on this embodiment. It is the side view which showed the asphalt finisher which concerns on this embodiment. It is the top view which showed the asphalt finisher which concerns on this embodiment. It is the rear view which showed the asphalt finisher which concerns on this embodiment. It is the schematic perspective view which showed the 1st guide means and the 2nd guide means of the asphalt finisher which concerns on this embodiment. It is the side view which showed the joint part finishing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Asphalt finisher main body 13b Screed 20 Winch 23 Wire rope 30 First guide means 31 First winding pulley 33 First pressing pulley 40 Second guide means 41 Second pressing pulley 43 Second winding pulley 50 Joint part finishing device AF Asphalt Finisher AG Asphalt composite K Ground surface R Roller car

Claims (4)

In the asphalt finisher equipped with a winch for towing a roller wheel disposed behind the asphalt finisher body on the upper part of the asphalt finisher body running on the base surface,
A first guide means for guiding a wire rope extending from the winch downward is provided behind the winch,
Below this first guide means, second guide means for guiding the wire rope extending from the first guide means to the rear is provided movably in the width direction of the asphalt finisher body,
The first guide means includes a first winding pulley that rotates along a traveling direction of the asphalt finisher body and guides the wire rope downward, and both sides in the width direction of the wire rope extending from the first winding pulley. A first holding pulley that is disposed on the wire rope and presses the side surface in the width direction of the wire rope,
The second guide means is disposed on both sides in the width direction of the wire rope extending from the first holding pulley, and extends along the traveling direction of the asphalt finisher body, and a second holding pulley that presses the side surface in the width direction of the wire rope. An asphalt finisher comprising: a second winding pulley that rotates backward and guides the wire rope extending from the second holding pulley backward. 2. The asphalt finisher according to claim 1, wherein the first guide means is provided at a center portion in a width direction of the asphalt finisher main body. The asphalt finisher according to claim 1 or 2, wherein the second guide means is disposed above a screed provided at a rear portion of the asphalt finisher main body. A joint finishing device that finishes the joint portion of the asphalt composite material in contact with the joint portion of the asphalt composite material spread along the edge of the existing asphalt pavement adjacent to the base surface, the roller vehicle The asphalt finisher according to any one of claims 1 to 3, wherein the asphalt finisher is provided in front of the asphalt finisher.

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