JP2014012939A - Asphalt paving machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an asphalt paving machine capable of minimizing a failure of a smog reducing device capable of reducing situations in which smog having the risk of adversely affecting the body of an operator performing operations on a paving machine body flows to the operator's side.SOLUTION: A smog reducing device 22 includes: a smoke exhaust duct 25 which has an inlet port 23 provided on a rear surface 13a of a paving machine body 13 and which has an exhaust port 24 provided in a position away from an operator station 18; a fan 29 which generates a forced airflow in the smoke exhaust duct 25; and a funnel 28 for smog discharge, which is connected to the exhaust port 24 of the smoke exhaust duct 25. The funnel 28 for smog discharge is provided with a drain hole, and a throating face which serves as a water stop partition part forming a weir for blocking inflow of water to the side of the exhaust port 24 of the smoke exhaust duct 25.

Description

  The present invention relates to an asphalt pavement machine, and more particularly, to an asphalt pavement machine provided with a fume reduction device capable of reducing the influence of harmful fumes (fumes) emanating from an asphalt mixture on a machine operator.

  Conventionally, an asphalt paving machine such as an asphalt finisher has been used to lay an asphalt mixture on a construction base to form a hard road surface.

  In general, this type of asphalt paving machine includes a paver main body having an operator station on the upper rear side, a composite hopper disposed on the front side of the paver main body and containing the composite, and the main body of the paver. A feeder that is provided inside and conveys the asphalt composite in the composite hopper to the rear side of the paver main body, and the asphalt mixture sent by the feeder is installed on the rear side of the paver main body. A screw spreader that spreads on a surface (paved surface), and a screed that averages the asphalt mixture spread by the screw spreader to a predetermined thickness on the rear side of the screw spreader. The asphalt mixture stacked on the conveyor is transported to the screw spreader by the feeder, and uniformly spread with a predetermined pave width on the construction base surface by the screw spreader. After arranging the adapted leveled spread to a predetermined thickness at the screed.

  The disadvantage of the asphalt pavement machine that uses such asphalt mixture is that when the asphalt mixture is heated, the petroleum distillation product contained in the asphalt mixture generates fumes with bad odor and the like. is there. The fumes also contain nitrogen, sulfur, benzene, and other hydrocarbon materials, many of which are in close proximity to the asphalt paving machine operator's body if they spend a long time in close proximity to the asphalt paving machine. There is a risk of harm. Further, most of the smoke directed to the operator is from the upper gap of the screw spreader provided between the rear surface of the paver main body and the front surface of the screed.

  Therefore, conventionally, a large hood is attached above the screw spreader so as to close substantially the entire gap between the rear surface of the paver main body and the front surface of the screed, and a smoke exhaust device having a suction port is provided inside the hood, The fumes emitted in the gap area between the rear surface of the main body of the paving machine and the front surface of the screed are captured by a hood, and the captured fumes are dissipated to the atmosphere at a position away from the operator through a smoke exhaust device, and the smoke to the operator An asphalt pavement machine in which the influence is reduced has also been proposed (see, for example, Patent Document 1).

JP-T-2001-526751 gazette.

  However, as in the technique described in Patent Document 1, the asphalt pavement machine in which the hood is attached above the screw spreader so as to close the gap between the rear surface of the paver main body and the front surface of the screed is configured to remove the smoke captured by the hood. In order to dissipate into the atmosphere at a position distant from the operator, it is carried to a position as far away from the operator as possible through the smoke exhaust duct and the chimney connected to the smoke exhaust duct to dissipate into the atmosphere. .

  In addition, in order to effectively discharge the smoke, a fan is installed in the middle of the smoke exhaust duct, and the forced air flow for generating smoke in the smoke exhaust duct is generated by driving the fan. Is released into the atmosphere.

  Here, the chimney connected to the smoke exhaust duct stands up with the discharge port facing upward because the amount of fumes floating around the operator is reduced when the chimney is dissipated in the atmosphere at a higher position than the operator. Often installed in the state. For this reason, during work in the rainy weather, there has been a problem that rainwater or the like enters from the discharge port of the chimney and accumulates in the duct or fan, causing a failure.

  Therefore, an asphalt pavement machine that can minimize the failure of the smoke reduction device that can reduce the flow of smoke that may adversely affect the operator's body working on the main body of the paver to the operator side. Therefore, a technical problem to be solved arises in order to provide this, and the present invention aims to solve this problem.

  The present invention has been proposed in order to achieve the above object, and the invention according to claim 1 is directed to a paving machine main body having an operator station on the upper rear side and a screed disposed behind the main body of the paving machine. In an asphalt pavement machine provided with a fume reducing device for reducing the fume from the gap toward the operator station, the fume reducing device has a suction port on the rear surface of the paver body and a discharge port at a position away from the operator station. A flue gas duct connected to the exhaust port of the flue gas duct, a fan for generating a forced air flow sucked into the flue gas duct from the suction port and discharged from the exhaust port; A smoke chimney, and stops the inflow of water into the smoke discharge chimney to the drain hole and the exhaust duct side of the smoke exhaust duct. Providing asphalt paver formed by providing a water stop partition part forming a dam that.

  According to this configuration, when rainwater or the like flows into the smoke discharge chimney, it can be blocked by the water stop partition and the water can be prevented from flowing into the smoke exhaust duct through the discharge port. In addition, the water that has flowed into the smoke discharge chimney is discharged outside through the drain hole provided in the smoke discharge chimney and does not collect in the smoke discharge chimney. It does not get over into the smoke duct.

  According to a second aspect of the present invention, in the configuration according to the first aspect, the smoke discharge chimney includes a first chimney portion provided on the smoke exhaust duct side with the water stop partition portion interposed therebetween, and the smoke exhaust duct. The second chimney is provided on the opposite side and has a second chimney having a smoke discharge port that discharges the smoke into the atmosphere at the tip, and the second chimney is installed upright with the fume discharge port facing upward, The drain hole is provided on the bottom surface side, and the water stop partition is displaced by a predetermined amount upward from the bottom surface of the second chimney to the surface separating the first and second chimneys. An asphalt paving machine having a window at a position is provided.

  According to this configuration, when rainwater enters from the smoke discharge port of the second chimney of the smoke discharge chimney, the water drainage block prevents the water from flowing into the smoke exhaust duct through the discharge port. While being able to do, it can prevent being discharged outside through the drain hole provided in the bottom face side of the 2nd chimney part, and accumulating in the smoke discharge chimney. Further, the water stop partitioning part can be formed by providing a window part on a surface partitioning the first chimney part and the second chimney part at a position displaced by a predetermined amount from the bottom surface of the second chimney part.

  According to a third aspect of the present invention, in the configuration of the first or second aspect, the smoke exhaust duct contains dust such as suspended particulate matter contained in the fumes passing through the smoke exhaust duct. An asphalt pavement machine provided with dust collecting means for collecting and removing is provided.

  According to this configuration, when the smoke sucked into the smoke exhaust duct of the smoke reduction device passes through the smoke exhaust duct, harmful dust such as suspended particulate matter contained in the smoke is collected by the dust collecting means. Since it is removed and then dissipated into the atmosphere through the outlet, air pollution can be prevented.

  According to the first aspect of the present invention, when rainwater or the like flows into the smoke discharge chimney, it is blocked by a water stop partition, and the water is prevented from flowing into the smoke exhaust duct through the smoke discharge port. Can do. At the same time, the water that has flowed into the smoke discharge chimney is discharged outside through the drain hole provided in the smoke discharge chimney and does not collect inside the smoke discharge chimney. It is possible to prevent failure of the smoke reduction device or the like without getting over the section and flowing into the smoke exhaust duct.

  In the invention according to claim 2, when rainwater or the like enters from the smoke discharge port of the second chimney portion of the smoke discharge chimney, the drainage partition portion blocks that water flows into the smoke exhaust duct through the discharge port. As well as stopping, it can be discharged to the outside through the drain hole provided on the bottom side of the second chimney, and it can be prevented from accumulating in the smoke discharge chimney, so it can get over the water stop partition and flow into the smoke exhaust duct In addition, it is possible to prevent failures such as the smoke reduction device. Further, the water stop partitioning part is simply formed by providing a window part on the surface separating the first chimney part and the second chimney part at a position displaced by a predetermined amount from the bottom surface of the second chimney part. Can do.

  The invention described in claim 3 is capable of preventing air pollution because harmful dust such as suspended particulate matter contained in the fumes is collected and removed by the dust collecting means and then dissipated into the atmosphere through the discharge port. Furthermore, the work environment can be improved.

1 is a side view of an asphalt pavement machine according to an embodiment of the present invention that is partially cut away. The rear surface schematic block diagram which removed the cover which has flexibility, and was seen from the front side of the screed. Sectional drawing which shows schematic structure of the chimney for a fume discharge in an asphalt pavement machine same as the above. FIG. 4 is an AA arrow view of FIG. 3. The BB arrow line view of FIG. The figure explaining the mounting structure and effect | action of the cover which has a softness | flexibility in an asphalt pavement machine same as the above.

  The present invention relates to an asphalt capable of minimizing the failure of a smoke reduction device capable of reducing the flow of smoke that may adversely affect the body of an operator working on a paver main body to the operator side as much as possible. In order to achieve the object of providing a paving machine, a haze that reduces the fumes toward the operator station from between a paver body having an operator station on the upper rear side and a screed disposed at the rear of the paver body. In the asphalt pavement machine provided with a reduction device, the smoke reduction device includes a smoke exhaust duct provided with a suction port on a rear surface of the paver main body and a discharge port at a position away from the operator station, and the smoke exhaust duct. Generates a forced air flow that draws in smoke from the inlet and exhausts it from the outlet. And a smoke discharge chimney connected to a discharge port of the smoke exhaust duct, and a water drain hole in the smoke discharge chimney and an inflow of water to the discharge port side of the smoke exhaust duct This is realized by providing a water stop partition portion for forming a weir to stop the water.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as “embodiments”) will be described in detail with reference to the accompanying drawings.

  1 and 2 show an asphalt finisher as an asphalt paving machine according to the present invention, FIG. 1 is a partially cutaway side view of the asphalt finisher, and FIG. 2 is a main body of a paving machine viewed from the front side of a screed. FIG. In the following description, the left and right direction left side (arrow D) in FIG. 1 will be described as the front of the asphalt pavement machine, the right side will be the rear, the up and down direction will be up and down, and the direction perpendicular to the page will be left and right.

  1 and 2, the asphalt finisher 11 includes a traveling vehicle body 13 (hereinafter referred to as “pavement machine body”) having a composite hopper 12 in which an asphalt composite material, which is a paving material, is stacked and accommodated. A pair of screeds 15 on the left and right that are pulled by the left and right leveling arms 14 and level the asphalt mixture to finish the construction base surface (paved surface) smoothly. Consists of Note that an arrow D in FIG. 1 indicates the traveling direction of the asphalt finisher 11.

  Further, the paver main body 13 is provided with a feeder (not shown) for conveying the asphalt mixture in the mix hopper 12 to the rear side of the paver main body 13 over almost the entire length of the paver main body 13. It has been. Further, the paver main body 13 includes a pair of left and right extendable screw spreaders that are positioned between the rear surface 13a of the paver main body 13 and the front surface of the screed 15 and spread the asphalt mixture on the construction base surface. 16,16 are provided.

  On the other hand, an operator station 18 is provided at the upper rear side of the paving machine body 13 to which driver seats 17 and 17 for an operator who operates the asphalt finisher 11 are attached. Further, an exhaust gas chimney 19 for exhausting exhaust gas from an engine (not shown) mounted in the interior of the paver main body 13 protrudes upward from the front upper portion of the operator station 18. Is provided.

  In the asphalt finisher 11, the asphalt mixture stacked on the hopper 12 is sent to the rear of the paver main body 13 by the feeder until it falls onto the screw spreaders 16 and 16. The screw spreaders 16 and 16 rotate the screw blades by the rotation of the screw shaft, and uniformly spread the asphalt mixture fed by the feeder over the entire front width of the rear screed 15. The screed 15 spreads the asphalt mixture spread on the pavement surface by the screw spreaders 16 and 16, and finishes the construction base surface smoothly.

  The above is the basic configuration and operation of the conventionally known asphalt finisher 11. Next, the most characteristic structure of the present invention will be described. In the asphalt finisher 11 of the present invention, the smoke reduction device 22 is provided between the paver main body 13 and the screed 15 as shown in FIG. is there. In the haze reducing device 22, the asphalt composite fumes 20 (schematically indicated by arrows in FIG. 1) that diverge between the paver main body 13 and the screed 15 are directed to the operator station 18. Decrease.

  More specifically, the smoke reduction device 22 includes a smoke exhaust duct 25 having a suction port 23 on the rear surface 13a of the paver main body 13 and a discharge port 24 away from the operator station 18, and a paver. Between the rear surface 13a of the main body 13 and the front surface of the screed 15, a hood 26 that shields the fumes 20 from the construction base surface toward the operator station 18 and a flexible cover 27 are formed. As shown in FIG. 2, the two suction ports 23 of the smoke exhaust duct 25 are provided side by side in the left-right direction. However, the number of the suction ports 23 may be one or more, and the shape of the mouth may be any shape. .

  As shown in FIG. 2, the hood 26 is provided over substantially the entire left and right width of the paver main body 13. As shown in FIGS. 1 and 6, the hood 26 is fixedly attached to the rear surface 13 a of the paver main body 13 at one end side (front side) above the suction port 23, and the other end side (rear side). 26b side) protrudes from the rear surface 13a of the paving machine main body 13 toward the front surface side of the screed 15, and the longitudinal section is formed in a substantially trapezoidal shape. More specifically, the hood 26 is formed of a steel plate as a hollow body having a front surface and a lower surface opened, and an upper surface 26a, a rear surface 26b, and left and right side surfaces 26c, 26c closed.

  The flexible cover 27 (hereinafter simply referred to as “cover 27”) is provided over substantially the entire width of the hood 26 as shown in FIG. The cover 27 is formed by molding rubber or a soft resin material, and is formed as a hollow body having front and lower surfaces opened, and an upper surface 27a, a rear surface 27b, and left and right side surfaces 27c and 27c are closed. The entire body is flexible so that it can flex freely in the vertical and horizontal directions.

  As shown in FIG. 3, the cover 27 covers the hood 26 and the screed so as to cover a part of the upper surface 26a, the rear surface 26b, the left and right side surfaces 26c, 26c of the hood 26 from the upper side of the hood 26. 15, the front surface 27 a is attached to the upper surface 26 a side of the hood 26 and the rear surface 27 b is attached to the front surface side of the screed 15, and the gap between the paver main body 13 and the screed 15 is connected to the hood 26 and the cover 27. It is held in a closed state. Therefore, under the hood 26 and the cover 27, the smoke 20 that diverges and rises from the construction base surface is completely blocked by the hood 26 and the cover 27.

  On the other hand, a smoke discharge chimney 28 is attached to the other end of the smoke exhaust duct 25 where the discharge port 24 is provided. In addition, as shown in FIG. 1, in the middle of the smoke exhaust duct 25, an electric motor for forming a forced air flow that sucks the smoke 20 from the suction inlet 23 and exhausts it from the exhaust outlet 24 in the smoke exhaust duct 25. Dust collecting means for collecting and removing the dust of suspended particulate matters such as nitrogen, sulfur, benzene and other hydrocarbon substances contained in the smoke 29 passing through the exhaust duct 25 and the fan 29 of the hydraulic motor. 30 is disposed.

  The smoke discharge chimney 28 protrudes greatly upward from the front upper part of the paver main body 13, and the operator who operates the asphalt finisher 11 at the driver seat 17 of the operator station 18 is not easily affected by the smoke 20. I have to.

  More specifically, as shown in FIGS. 3 to 5, the smoke discharge chimney 28 is a hollow cylinder having a square cross section, and is composed of a first chimney portion 28a and a second chimney portion 28b. ing.

  One end of the first chimney portion 28a is connected to the discharge port 24 of the smoke exhaust duct 25, the other end is closed as a partition surface 31a, and a window portion 31b is provided on the partition surface 31a. The first chimney portion 28a guides the direction of the smoke 20 discharged from the discharge port 24 to the second chimney portion 28b side, and further discharges it to the second chimney portion 28b side through the window portion 31b. It is fixed horizontally on the upper surface 13b of the paver main body 13.

  On the other hand, the second chimney portion 28b guides the direction of the first chimney portion 28a and the smoke 20 discharged from the first chimney portion 28a in a direction perpendicular to the upper surface 13b of the paver main body 13, and the pavement machine It is fixed vertically on the upper surface 13 b of the main body 13.

  The upper end side of the second chimney portion 28b is opened as a fog discharge port 35, the lower end surface (bottom surface 32) on the opposite side is closed, and the rainwater 36 dropped on the bottom surface 32, etc. on the lower end surface side. Are provided in a state of being connected to the bottom surface 32 in order to sequentially discharge the air to the outside of the smoke discharge chimney 28. The drain hole 33 is formed as a rectangular hole as shown in FIG.

  Further, the partition surface 34a of the second chimney portion 28b facing the partition surface 31a of the first chimney portion 28a is provided with a window portion 34b corresponding to the window portion 31b of the partition surface 31a. The shape of the window part 31b of the partition surface 31a and the window part 34b of the partition surface 34a is a quadrangle having the same size. Further, the window part 31b and the window part 34b are displaced from the bottom face 32 of the second chimney part 28b by the same predetermined distance, that is, rainwater 36 dropped on the bottom face 32 of the second chimney part 28b, etc. Is provided at a position having a height that hardly flows into the first chimney side 28a through the windows 31b and 34b.

  FIG. 5 shows the shape of the partition portion 34a on the second chimney portion 28b side and the position of the window portion 34b from the bottom surface 32, but the shape and position of the window portion 31b of the partition surface 31a on the first chimney portion 28a side. As shown in FIG. 3, they are provided at substantially the same position and in the same shape as the window 34b of the partition surface 34a. And the said partition surface 31a and the partition surface 34a function as a weir which stops the inflow of the water to the discharge port 24 side of the smoke exhaust duct 25, ie, a water stop partition part. In addition, when the 1st chimney part 28a and the 2nd chimney part 28b are integrally formed, the one-piece board which integrated the partition surface 31a of the 1st chimney part 28a, and the partition surface 34a of the 2nd chimney part 28b. It is also possible to adopt a structure in which a water stop partition portion is provided and a window portion is provided in the water stop partition portion.

  Therefore, in the asphalt finisher 11 provided with the smoke reduction device 22 formed in this way, the smoke 20 that diverges and rises from the construction base surface at the lower portion of the hood 26 and the cover 27 is shown in FIG. As shown in FIG. 1 and FIG. Then, the blocked smoke 20 is put on the forced air flow generated by driving the fan 29 and taken into the exhaust duct 25 from the suction port 23, and further, the smoke exhaust duct 25 and the smoke discharge chimney 28. It is discharged from the smoke discharge port 35 of the smoke discharge chimney 28 arranged away from the operator through the windows 31a and 34a and dissipated into the atmosphere. Thereby, the influence of the smoke 20 with respect to an operator can be reduced and the working environment can be improved.

  Further, since the cover 27 is formed with flexibility, when the screed 15 moves in the vertical or horizontal direction with respect to the cover 27, or the pavement machine main body 13 side is vertical or horizontal with respect to the cover 27. When moving in the direction or the like, it bends following the movement of the screed 15 or the paving machine main body 13 side, always keeps the state covering the gap between the hood 26 and the screed 15, and the effect of the smoke 20 on the operator Can always be eliminated. The cover 27 may be formed not only in the form of a sheet-like surface in a hollow body but also in a telescopic bellows shape. Therefore, the followability of the cover 27 is further enhanced.

  Furthermore, when rainwater enters the second chimney portion 28b from the haze discharge port 35 opened on the upper end side of the second chimney portion 28b and falls to the bottom surface 32 during rainy work or the like, as a draining partition portion The drainage surface 34a (and the drainage surface 31a) dams the rainwater 36 and discharges the rainwater 36 to the outside through the drainage hole 33 provided continuously to the bottom surface 32 on the lower end side of the second chimney 28b. It can prevent flowing into the smoke exhaust duct 25 through the part 34b (and the window part 31b) and the exhaust port 24, and can eliminate the failure of the smoke reduction device and the like.

  In the above-described embodiment, the smoke discharge chimney 28 and the smoke exhaust duct 25 are described as separate structures. However, the smoke discharge chimney 28 and the smoke exhaust duct 25 have an integrated structure, and the exhaust duct 25 is discharged. You may make it the structure which provided the chimney 28 for a fume discharge in a part of side.

  The present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

  The present invention can be applied to all asphalt finishers using asphalt composites.

11 Asphalt finisher (asphalt paving machine)
12 Compound hopper 13 Car body (Pavement machine main body)
13a Rear surface 13b Upper surface 14 Leveling arm 15 Screed 16 Screw spreader 17 Driver's seat 18 Operator station 19 Exhaust chimney 20 Smoke 22 Smoke reducing device 23 Suction port 24 Outlet 25 Smoke duct 26 Hood 27 Cover 28 Smoke discharge chimney 28a First Chimney 28b Second chimney 29 Fan 30 Dust collecting means 31a Partition surface (water stop partition)
31b Window portion 32 Bottom surface 33 Drain hole 34a Partition surface (water stop partition portion)
34b Window 35 Smoke outlet 36 Rain water

1 is a side view of an asphalt pavement machine according to an embodiment of the present invention that is partially cut away. The rear surface schematic block diagram which removed the cover which has flexibility, and was seen from the front side of the screed. It is a figure which shows schematic structure of the chimney for a fume discharge in an asphalt pavement machine same as the above , (a) is the sectional drawing, (b) is the partial enlarged view . FIG. 4 is an AA arrow view of FIG. 3. The BB arrow line view of FIG. The figure explaining the mounting structure and effect | action of the cover which has a softness | flexibility in an asphalt pavement machine same as the above.

Claims (3)

In an asphalt pavement machine comprising a paver main body having an operator station on the upper rear side and a fume reducing device for reducing the fume toward the operator station from between a screed disposed at the rear of the paver main body,
The smoke reduction device has a suction port provided on the rear surface of the paver main body and a discharge port provided at a position away from the operator station, and sucks smoke into the smoke discharge duct from the suction port. , A fan that generates a forced air flow discharged from the discharge port, and a smoke discharge chimney connected to the discharge port of the smoke exhaust duct, and a drain hole in the smoke discharge chimney, An asphalt pavement machine comprising a water stop partition portion that forms a weir that stops the inflow of water to the discharge port side of the smoke exhaust duct.   The smoke discharge chimney is provided on the opposite side of the smoke exhaust duct with the first partition located on the smoke exhaust duct side with the water stop partition part interposed therebetween, and the smoke that releases smoke into the atmosphere at the tip A second chimney portion having a discharge port, and the second chimney portion is installed upright with the haze discharge port facing upward, and the drain hole is provided on the bottom side thereof, and the water stopper 2. The partition part is formed by providing a window part on a surface separating the first chimney part and the second chimney part at a position displaced by a predetermined amount from the bottom surface of the second chimney part. Asphalt paving machine as described.   2. A dust collecting means for collecting and removing soot and dust such as suspended particulate matter contained in the smoke passing through the smoke exhaust duct is disposed in the smoke exhaust duct. Or asphalt pavement machine of 2 description.