JP6883853B2 - Ventilation system and road paving vehicles using it - Google Patents

Description

The present invention relates to a ventilation system, and more specifically to a ventilation system such as oil smoke generated during road pavement.

Conventionally, the oil smoke discharging device described in Patent Document 1 has been known as a system for ventilating smoke such as oil smoke generated during road paving by an asphalt finisher.

In the device described in Patent Document 1, horizontally long suction portions are provided under the operation table or the control box, and smoke is sucked by the exhaust fan portions attached to the left and right of the suction portion to suck the smoke of the vehicle body. The exhaust ducts located on the right and left sides have adopted a structure in which smoke is discharged to the left and right of the vehicle body. As a result, in the device described in Patent Document 1, the driver can visually recognize the asphalt mixture and the smoke is prevented from being sucked by the driver.

Japanese Unexamined Patent Publication No. 2016-17391

In paragraph 0016 of Patent Document 1, a rectangular parallelepiped shape is adopted as a specific structure of the suction portion, and a structure in which the lower surface is open is adopted. However, such a conventional structure of the suction portion has a problem that smoke cannot be sucked efficiently.

Further, in the device described in Patent Document 1, although the exhaust ducts are provided on the left and right, they are fixedly attached, and the exhaust position is low, so that the driver is exhausted from the exhaust duct. It may inhale the smoke.

Therefore, the present invention provides a ventilation system capable of efficiently sucking smoke and preventing the driver and others from sucking the smoke exhausted from the exhaust duct. The purpose is.

In order to solve the above problems, the present invention has the following features. The present invention is a ventilation system attached to a road paving vehicle, in which a suction portion arranged at a position located above an asphalt mixture during road paving, a suction portion for sucking smoke, and a suction portion are provided. It comprises an exhaust portion to be attached, the exhaust portion is a flexible duct, the suction portion is composed of at least one tubular member arranged in the vehicle width direction, and the tubular member is at least one suction. It has a hole.

Preferably, the suction portion is composed of a plurality of tubular members arranged in a staggered manner.

Preferably, the suction portion has a smaller diameter of the outer portion in the vehicle width direction than the diameter of the central portion of the vehicle width.

Preferably, the suction portion is composed of a plurality of tubular members arranged in the vehicle width direction, and a suction hole may be formed by a gap between the tubular members.

Preferably, a suction hole is formed in the body portion of the tubular member.

Preferably, the road paving vehicle has a tiltable canopy and the exhaust is attached to the canopy.

Preferably, the road paving vehicle is provided with tiltable stanchions and the exhaust is attached to the stanchions.

Preferably, the tip of the exhaust portion on the exhaust side has a structure capable of changing the exhaust direction.

Preferably, as a structure capable of changing the exhaust direction, a structure for changing the direction of a member attached to the tip of the exhaust portion may be used.

Preferably, the member can cover the tip of the exhaust section.

Preferably, as a structure capable of changing the exhaust direction, a structure capable of changing the direction of the tip of the exhaust portion is preferably used.

Preferably, the suction portion is provided at the lower part of the operation table or the control box.

Further, the present invention is a ventilation system attached to a road paving vehicle, and has a suction portion arranged at a position located above the asphalt mixture during road paving, a suction portion for sucking smoke, and suction. The suction portion includes an exhaust portion attached to the portion, and the suction portion is composed of at least one tubular member arranged in the vehicle width direction, and the tubular member has at least one suction hole.

Further, the present invention is a ventilation system attached to a road pavement vehicle, which includes a suction portion arranged at a position located above the asphalt mixture during road paving, a suction portion for sucking smoke, and suction. It is provided with an exhaust portion attached to the portion, and the exhaust portion is a flexible duct.

Further, the present invention is a ventilation system attached to a road paving vehicle, and has a suction portion arranged at a position located above an asphalt mixture during road paving, a suction portion for sucking smoke, and suction. It is provided with an exhaust portion attached to the portion, and the tip of the exhaust portion on the exhaust side has a structure capable of changing the exhaust direction.

Further, the present invention is a road paving vehicle equipped with the above ventilation system.

According to the present invention, by making the suction portion a tubular member and forming a suction hole, smoke such as oil smoke can be efficiently sucked. Since the oil smoke itself also has heat, if the oil smoke or the like is exhausted by the ventilation system of the present invention, the temperature rise of the working environment can be suppressed, which leads to the improvement of the working environment.

Further, by making the duct of the exhaust portion flexible, the degree of freedom in the place where the exhaust duct is installed is increased. For road paved vehicles equipped with a canopy, an exhaust duct can be installed at the top of the canopy, and for road paved vehicles without a canopy, it can be installed at an appropriate location by erecting columns. .. Further, since the exhaust duct has flexibility, it becomes easy to adjust the direction of the tip of the exhaust duct. In addition, when the exhaust duct is attached to the canopy or support, if the exhaust duct is flexible, the exhaust duct will be deformed appropriately even if the canopy or support is tilted, and the canopy or support can be easily installed. Can be defeated.

Efficient suction is possible by making the suction part into multiple tubular members arranged in different steps, or by making the diameter of the outer part in the vehicle width direction smaller than the diameter of the central part of the vehicle width. Become.

Efficient suction is also possible by using a gap between the tubular members as the suction hole.

Efficient suction can also be realized by using a hole provided in the body portion of the tubular member as the suction hole.

By equipping the road paved vehicle with a canopy and a support that can be tilted and attaching the exhaust part to the canopy and the support, the exhaust duct can be appropriately deformed at the time of tilting, and the exhaust part can be made compact. The exhaust duct will not be an obstacle not only during construction, but also during forwarding, storage, and transportation.

If a structure that can change the exhaust direction is adopted, it is possible to exhaust in a direction that reduces the influence on the surrounding environment as much as possible. Since the ventilation system of the present invention has a high exhaust capacity, exhausted oil smoke and the like may spread to the surroundings. Therefore, by making the exhaust direction changeable, it is possible to adjust so that the air is not exhausted to the sidewalk or the residential side.

Further, by covering the tip of the exhaust portion with a member that changes the exhaust direction, it is possible to prevent rain from entering the exhaust portion and the suction portion in rainy weather.

By providing the suction portion at the lower part of the operation table or the control box, more efficient exhaust can be realized while the operator can visually recognize the asphalt mixture.

These and other objectives, features, aspects and effects of the present invention will become more apparent from the following detailed description in light of the accompanying drawings.

FIG. 1 is a perspective view of a road paved vehicle 1 equipped with a ventilation system according to an embodiment of the present invention when viewed from diagonally right rear. FIG. 2 is a perspective view of the road paved vehicle 1 when viewed from diagonally left front. FIG. 3 is a rear view of the road paved vehicle 1 as viewed from the driver's cab 7 side. FIG. 4 is a left side view of the road paved vehicle 1 as viewed from the right side. FIG. 5 is a plan view of the road paved vehicle 1 as viewed from above. FIG. 6 is a perspective view of the ventilation system 12 and the canopy 6 mounted on the road paved vehicle 1. FIG. 7 is an enlarged side view of the vicinity of the operation table 7 and the screed 9. FIG. 8 is a perspective view of the suction portion 2. FIG. 9 is a horizontal sectional perspective view of the suction portion 2. FIG. 10 is a side view of the suction portion 2. FIG. 11 is a diagram showing the internal structure of the suction unit 4. FIG. 12 is a side view showing a state when the canopy 6 is tilted down. FIG. 13 is a perspective view when the exhaust direction regulating member 13 is attached to the exhaust tip portion 5a. FIG. 14 is a perspective view when the direction of the exhaust direction regulating member 13 is changed. FIG. 15 is a perspective view showing a state when the exhaust tip portion 5a is covered by the exhaust direction regulating member 13. FIG. 16 is a perspective view when a swivel type exhaust direction changing member 5c is attached to the tip side of the exhaust tip portion 5a. FIG. 17 is a rear view of the road paved vehicle 1 when the canopy is not used. FIG. 18 is a left side view of the road paved vehicle 1 when the canopy is not used. FIG. 19 is a diagram showing a modified example of the suction portion 2. FIG. 20 is a drawing substitute photograph when a state when smoke is sucked by using the suction unit 2 shown in FIG. 8 is photographed from the back surface. FIG. 21 is a drawing-substituting enlarged photograph of the periphery of the suction unit 2 when smoke is sucked using the suction unit 2 shown in FIG. FIG. 22 is a diagram schematically showing the flow of smoke.

FIG. 1 is a perspective view of a road paved vehicle 1 equipped with a ventilation system according to an embodiment of the present invention when viewed from diagonally right rear. FIG. 2 is a perspective view of the road paved vehicle 1 when viewed from diagonally left front. FIG. 3 is a rear view of the road paved vehicle 1 as viewed from the driver's cab 7 side. FIG. 4 is a left side view of the road paved vehicle 1 as viewed from the right side. FIG. 5 is a plan view of the road paved vehicle 1 as viewed from above. FIG. 6 is a perspective view of the ventilation system 12 and the canopy 6 mounted on the road paved vehicle 1. The front of the hopper 11 is the front of the road paved vehicle 1. First, a schematic configuration of the ventilation system 12 will be described with reference to FIGS. 1 to 6.

The road paved vehicle 1 includes a driving operation table 7, a control box 8, a screed 9, a screed step 10, and a hopper 11. The asphalt mixture supplied to the hopper 11 is sent to the rear of the vehicle by a conveyor existing inside the road paving vehicle 1. The asphalt mixture sent out to the rear is leveled by the screed 9. The operator sits on a chair (not shown) and operates the driver's console 7. Further, the operator appropriately stands in the screed step 10 and operates the operation table 7. At the time of operation, the operator appropriately visually recognizes the state of the asphalt mixture from between the screed 9 and the vehicle body, and performs the operation.

The ventilation system 12 is attached to the road paved vehicle 1 and includes a suction portion 2, a suction duct portion 3, a suction portion 4, and an exhaust portion 5. When the fan inside the suction section 4 rotates, a negative pressure is generated, the suction section 2 sucks smoke, and the smoke is discharged from the exhaust section 5 via the suction duct section 3 and the suction section 4.

A retractable canopy 6 is attached to the road paved vehicle 1. As shown in FIG. 6, the canopy 6 has two sets of columns 6c and 6b and 6e and 6f rotatably attached to the left and right brackets 6a and 6d fixed to the vehicle body and the brackets 6a and 6d. And the main roof portion 6i rotatably attached to the columns 6c and 6b and 6e and 6f, and the auxiliary roof portion 6g rotatably attached to the main roof portion 6i by the rotating portion 6h. To be equipped.

By inserting a pin (not shown) into the brackets 6a and 6d, the movement of the support column can be restricted when the support columns 6c and 6b and 6e and 6f are erected or tilted. The rotating portion 6h has a positioning member such as a plunger, and the opening angle of the auxiliary roof portion 6g can be adjusted by fitting the plunger into a plurality of holes. FIG. 6 shows a state in which the canopy 6 is erected and the auxiliary roof portion 6 g is opened.

The exhaust portion 5 includes an exhaust tip portion 5a and an exhaust duct 5b. One end of the exhaust duct 5b is communicated with the suction portion 4. The other end of the exhaust duct 5b is communicated with the exhaust tip portion 5a. The exhaust duct 5b is a flexible duct, and its shape can be flexibly deformed. The exhaust tip portion 5a is attached to the canopy 6. In the example shown in FIGS. 1 to 6, the exhaust tip portion 5a is arranged on the right side of the vehicle so that the exhaust direction is toward the front of the vehicle, but the location of the exhaust tip portion 5a is not limited.

Since the exhaust duct 5b has flexibility, in the case of a road paved vehicle 1 having a canopy 6, oil smoke can be discharged upward by arranging the exhaust duct 5b up to the upper part of the canopy 6. Further, if the metal fitting to which the exhaust tip portion 5a is attached can be rotated with respect to the support column, the direction of the exhaust tip portion 5a can be changed. At that time, if the flexible exhaust duct 5b is used, the orientation of the exhaust tip portion 5a can be easily changed.

FIG. 7 is an enlarged side view of the vicinity of the operation table 7 and the screed 9. Hereinafter, the arrangement position of the suction portion 2 will be described with reference to FIGS. 3 and 7. As shown in FIG. 3, the suction portion 2 is arranged in the vehicle width direction. Further, as shown in FIG. 7, the suction unit 2 is attached to the lower part of the operation table 7 and the control box 8. Further, as shown in FIG. 7, the suction portion 2 is arranged between the screed 9 and the suction portion 2 so that a gap W for visual recognition of the asphalt mixture is formed. As a result, the operator can perform the work while visually recognizing the state of the asphalt mixture from the gap W.

However, the extent to which the gap W is provided is not particularly limited. The suction unit 2 may be arranged at the lower part of the operation table 7 and the control box 8. Further, depending on the road paved vehicle 1, the position of the control box 8 is different, so the position of the suction portion 2 may be the lower part of the operation table 7 or the control box 8. However, if the suction unit 2 is arranged at a position where smoke can be easily sucked, it does not necessarily have to be arranged at the lower part of the operation table 7 or the control box 8. Therefore, the suction portion 2 may be arranged at a position located above the asphalt mixture when paving the road.

The suction portion 2 may be arranged all over the vehicle width direction, or may be arranged at least partially.

FIG. 8 is a perspective view of the suction portion 2. FIG. 9 is a horizontal sectional perspective view of the suction portion 2. FIG. 10 is a side view of the suction portion 2. Hereinafter, the specific structure of the suction portion 2 will be described with reference to FIGS. 8 to 10.

The suction portion 2 includes a first tubular member 2e, a second tubular member 2c and 2d, and a third tubular member 2a and 2b. The outer dimensions of each tubular member are reduced in the order of the first tubular member 2e, the second tubular member 2c and 2d, and the third tubular member 2a and 2b. It has a structure. In the figure, the tubular member is said to be cylindrical, but it is not limited to a cylindrical member, and may be a tubular member having a polygonal cross section as long as the inside is hollow. Further, the number of tubular members is not limited to the illustrated example. The suction portion may be made of at least one tubular member.

Since the tubular members are arranged in a nested manner, a gap is generated between the tubular members. There is a gap of 2 g between the first tubular member 2e and the second tubular member 2c. Similarly, there is a gap 2f between the second tubular member 2c and the third tubular member 2a, and between the first tubular member 2e and the second tubular member 2d. , There is a gap 2h, and there is a gap 2i between the second tubular member 2d and the third tubular member 2b. These gaps function as suction holes for sucking smoke.

Further, at least one suction hole h is also present in the body portion of the suction portion. In the figure, the suction hole h is provided only in the first tubular member 2e, but the suction hole h may be provided in another tubular member.

Further, the ends of the third tubular members 2a and 2b are partially covered and have suction holes 2j and 2k.

As described above, the suction portion 2 has a suction hole due to a gap created by a step of the tubular member, a suction hole provided in the body portion of the tubular member, and a suction hole provided at the end portion of the tubular member. ing.

The two holes h3 provided in the first suction portion 2e are holes for communicating the two suction ducts 3a and 3b constituting the suction duct portion 3. The number of suction ducts is preferably one or more.

Further, as shown in FIG. 9, one end of the thin second tubular member 2d, 2c is inserted halfway through one end of the thicker first tubular member 2e, and similarly, the third position. One ends of the tubular members 2a and 2b are inserted halfway through one ends of the second tubular members 2c and 2d.

Expressing the cross-sectional structure of the suction portion 2 in another expression, it can be said that the suction portion 2 has a structure in which the inner dimension becomes smaller toward the outside in the vehicle width direction.

The effect of the structure of the suction portion 2 will be described. The hole h3 connecting the suction duct portion 3 is a large hole according to the diameters of the suction ducts 3a and 3b. Although not limiting the present invention, if the diameters of the suction ducts 3a and 3b are too small, the resistance at the time of suction increases and the load on the hydraulic motor 4a for rotating the fan of the suction unit 4 increases. The diameters of 3a and 3b are determined based on the capacity of the selected hydraulic motor 4a and the like. Therefore, the size of the tubular member (here, the diameter of the first tubular member 2e) of the portion communicating with the suction ducts 3a and 3b is determined to some extent by the diameter of the suction ducts 3a and 3b. ..

At that time, of course, suction is also possible by extending the tubular member toward the outside in the vehicle width direction and forming a suction hole h in the body portion while keeping the diameter of the first tubular member 2e. is there. However, when the suction efficiency is to be further improved, the suction force is increased by reducing the diameter of the tubular member, and more smoke can be sucked. Therefore, in the present embodiment, it can be said that the suction force is increased to the extent that the suction resistance does not increase by reducing the diameter toward the outside by the nesting type stepped tubular member. Further, if the suction hole h is formed only in the body portion, the resistance may become too large depending on the size of the suction hole h. Therefore, by making the gap existing between the tubular members a suction hole, it is possible to improve the suction efficiency while preventing the resistance from becoming too large.

As described above, by using the structure of the suction portion 2 disclosed in the present embodiment, it is possible to efficiently perform suction.

It is possible to reduce the diameter of the tubular member 2e by inserting an intermediate member having a small diameter between the suction ducts 3a and 3b and the tubular member 2e.

A modified example of the suction portion 2 that can be included in the present invention will be described later with reference to FIG.

FIG. 11 is a diagram showing the internal structure of the suction unit 4. In FIG. 11, the suction unit 4 includes a hydraulic motor 4a and a fan 4b. The hydraulic motor 4a is driven by a hydraulic system (not shown). When the hydraulic motor 4a rotates, the fan 4b rotates, the air inside the suction unit 4 is sent out to the exhaust duct 5b of the exhaust unit 5, and the suction ducts 3a and 3b include smoke around the suction unit 2. Air is sucked. As a result, smoke is discharged from the exhaust tip portion 5a of the exhaust portion 5. The fan may be rotated by an electric motor.

FIG. 12 is a side view showing a state when the canopy 6 is tilted down. When the canopy 6 is tilted, the columns 6c, 6b, 6e, 6f are tilted around the brackets 6a, 6d, but the brackets 6a, 6d, the columns 6c, 6b, 6e, 6f, and the main roof portion 6i Since the parallel crank is formed by the frame of the above, the main roof portion 6i will fall down horizontally as shown in FIG. Further, the auxiliary roof portion 6g can be closed to the main roof portion 6i side by using the rotating portion 6h.

By defeating the canopy 6 in this way, it is possible to prevent the canopy 6 from getting in the way when the road paved vehicle 1 is forwarded, stored, or transported.

At this time, since the exhaust duct 5b has flexibility, the exhaust duct 5b can be appropriately deformed so that the exhaust portion 5 does not get in the way during forwarding, storage, and transportation like the canopy 6. Needless to say, the construction may be carried out with the canopy 6 tilted down.

(Modification example)
In the above embodiment, the operator cannot change the direction of the exhaust tip portion 5a. However, depending on the surrounding environment, it is better to be able to change the direction of smoke exhaust. For example, if there is a house or sidewalk on the right side of the vehicle, it is better to exhaust in a different direction from the house or sidewalk. Therefore, according to the present invention, it is preferable that the tip of the exhaust unit 5 on the exhaust side has a structure capable of changing the exhaust direction.

As a method of changing the exhaust direction, two modified examples are presented here, but the examples described below are not limited as long as the exhaust direction can be changed.

FIG. 13 is a perspective view when the exhaust direction regulating member 13 is attached to the exhaust tip portion 5a. FIG. 14 is a perspective view when the direction of the exhaust direction regulating member 13 is changed. FIG. 15 is a perspective view showing a state when the exhaust tip portion 5a is covered by the exhaust direction regulating member 13.

The exhaust tip portion 5a is attached to the main roof portion 6i of the canopy 6 via the bracket 13c. The exhaust direction regulating member 13 is a U-shaped member having an L-shape at the top and bottom. An elongated hole 13b is formed in the upper and lower L-shaped angles. Brackets are attached to the upper and lower parts of the exhaust tip portion 5a.

The upper and lower brackets of the exhaust tip portion 5a and the upper and lower angles of the exhaust direction regulating member 13 are rotatably connected by the upper and lower wing bolts 13a. Therefore, the direction of the exhaust direction regulating member 13 can be changed by loosening the wing bolt 13a. For example, as shown in FIG. 14, the exhaust direction can be set to the inside of the vehicle by making the side surface of the exhaust direction regulating member 13 face the outside of the vehicle. Further, if the exhaust direction regulating member 13 is rotated in the direction opposite to that of FIG. 14, the exhaust direction can be directed to the outside of the vehicle. In this way, the exhaust direction can be changed by rotatably attaching the exhaust direction regulating member 13 to the tip of the exhaust portion 5.

Further, as shown in FIG. 15, if the elongated hole 13b is used and the exhaust direction regulating member 13 covers the opening at the tip of the exhaust tip portion 5a, rain or the like can enter the exhaust portion 5. Can be prevented. Therefore, in the work in rainy weather, it is possible to prevent rain from entering the exhaust unit 5, and as a result, rain from entering the suction unit 4. As a result, it leads to failure prevention.

FIG. 16 is a perspective view when a swivel type exhaust direction changing member 5c is attached to the tip side of the exhaust tip portion 5a. Also in FIG. 16, the exhaust tip portion 5a is attached to the bracket 13c, and the bracket 13c is attached to the main roof portion 6i of the canopy 6. The exhaust direction changing member 5c is a bent tubular member, has a plurality of elongated holes 5d at the end, and is rotatably attached to the exhaust tip 5a via a wing bolt 13a. .. By loosening the wing bolt 13a, the direction of the exhaust direction changing member 5c can be changed.

As described above, as a modification, a structure in which the exhaust flow of smoke is indirectly regulated by using the member 13 attached to the tip of the exhaust tip 5a to change the exhaust direction, and the exhaust tip 5a It is conceivable that the exhaust direction is changed by using the member 5c that directly changes the exhaust direction at the tip of the. However, in the present invention, a structure other than the one shown in the drawing may be used as long as the exhaust direction can be changed.

FIG. 17 is a rear view of the road paved vehicle 1 when the canopy is not used. FIG. 18 is a left side view of the road paved vehicle 1 when the canopy is not used. When the canopy is not used, the columns 6e and 6f are tiltably attached to the bracket 6d attached to the vehicle body. A bracket 13c is attached to the upper ends of the columns 6e and 6f. The exhaust tip portion 5a is attached to the bracket 13c. As a result, when the columns 6e and 6f are tilted, the flexible exhaust duct 5b is appropriately deformed to follow the columns 6e and 6f and collapse.

In this way, even when the canopy is not used, it is possible to use the flexible exhaust duct 5b so that the exhaust unit 5 does not get in the way during storage, transportation, forwarding, etc. Can be done. Of course, the columns 6e and 6f may be tilted during construction.

FIG. 19 is a diagram showing a modified example of the suction portion 2. As shown in FIG. 19A, the suction portion 2 may have a structure in which one or more suction holes h are provided in one tubular member. In the case of FIG. 19A, the end portion of the tubular member does not have to have a structure like the suction hole 2j, and may be provided with, for example, a round hole or an elongated hole (FIG. 19 (a). The same applies to b) and (c). The hole h3 for communicating the suction ducts 3a and 3b may be substantially the same as the diameter of the suction ducts 3a and 3b, or may be smaller than the diameter of the suction ducts 3a and 3b to be smaller than the diameter of the suction ducts 3a and 3b. It may be made to communicate with another member which connects with h3.

As shown in FIG. 19B, the suction portion 2 may be formed by joining the tubular members 2c and 2d having a small diameter to both ends of the tubular member 2e having a large diameter. In this case, as shown in FIG. 9, a part of the ends of the tubular members 2c and 2d having a small diameter is not inserted into the thicker tubular member 2e, but the thicker tubular member 2e. It is a structure that is joined to the end of. Further, with respect to the structure of FIG. 19B, as shown in FIG. 19C, a suction hole h1 is provided at the end of the thicker tubular member 2e to form a thicker tubular member 2e. A suction hole h1 may be provided between the narrower tubular members 2c and 2d.

As shown in FIG. 19D, a truncated cone-shaped tubular member may be used as long as the diameter decreases toward the outside in the vehicle width direction. In this case, the suction hole h2 may be provided at the end. The holes h3 may be arranged in the vertical direction as shown in FIG. 19 (d).

The shape of the suction portion 2 does not have to be symmetrical.

In addition, various structures of the suction unit 2 can be considered, and the present invention is not limited to the exemplary structures shown so far.

FIG. 20 is a drawing substitute photograph when a state when smoke is sucked by using the suction unit 2 shown in FIG. 8 is photographed from the back surface. FIG. 20 shows photographs of the state of smoke before suction and the state of smoke after suction. FIG. 21 is a drawing-substituting enlarged photograph of the periphery of the suction unit 2 when smoke is sucked using the suction unit 2 shown in FIG. As a result of the experiment, as shown by the white arrow in FIG. 21, it was confirmed that smoke was efficiently sucked from the entire suction holes 2h, 2i, and 2k.

FIG. 22 is a diagram schematically showing the flow of smoke. The flow of smoke is indicated by the dashed arrow. It was confirmed that when the suction unit 2 of the present embodiment was used, smoke was efficiently sucked between the tubular members.

Although the present invention has been described in detail above, the above description is merely an example of the present invention in all respects, and the scope thereof is not intended to be limited. Needless to say, various improvements and modifications can be made without departing from the scope of the present invention. The constituent requirements of the invention disclosed in the present specification shall be established as independent inventions. The present invention also includes an invention in which each constituent element is combined by any combination method.

The present invention is a ventilation system that realizes efficient ventilation and is industrially applicable.

1 Road paved vehicle 2 Suction part 2e First tubular member 2c, 2d Second tubular member 2a, 2b Third tubular member 2g, 2f, 2h, 2i Gap (suction hole)
h, h1, h2,2j, 2k Suction hole 3 Suction duct part 3a, 3b Suction duct h3 hole 4 Suction part 4a Hydraulic motor 4b Fan 5 Exhaust part 5a Exhaust tip part 5b Exhaust duct 5c Exhaust direction changing member 5d Long hole 6 Canopy 6a, 6d Bracket 6c, 6b, 6e, 6f Strut 6i Main roof part 6h Rotating part 6g Auxiliary roof part 7 Operation table 8 Control box 9 Screed 10 Screed step 11 Hopper 12 Ventilation system 13 Exhaust direction regulation member 13a Butterfly bolt 13b Long hole 13c bracket W gap

Claims (12)

A ventilation system that can be attached to road paved vehicles.
A suction part located at the top of the asphalt mixture when paving the road,
A suction part for sucking smoke and
And an exhaust portion which is attached to the suction unit,
The exhaust portion is a flexible duct, and is
The suction portion is composed of at least one tubular member arranged in the vehicle width direction.
Said tubular member, Propelled by one at least one suction hole,
A ventilation system, wherein the suction portion is composed of a plurality of the tubular members arranged in a staggered manner. A ventilation system that can be attached to road paved vehicles.
A suction part located at the top of the asphalt mixture when paving the road,
A suction part for sucking smoke and
And an exhaust portion which is attached to the suction unit,
The exhaust portion is a flexible duct, and is
The suction portion is composed of at least one tubular member arranged in the vehicle width direction.
Said tubular member, Propelled by one at least one suction hole,
The suction portion is a ventilation system characterized in that the diameter of the outer portion in the vehicle width direction is smaller than the diameter of the central portion of the vehicle width. A ventilation system that can be attached to road paved vehicles.
A suction part located at the top of the asphalt mixture when paving the road,
A suction part for sucking smoke and
And an exhaust portion which is attached to the suction unit,
The exhaust portion is a flexible duct, and is
The suction portion is composed of at least one tubular member arranged in the vehicle width direction.
Said tubular member, Propelled by one at least one suction hole,
The suction portion is composed of a plurality of tubular members arranged in the vehicle width direction.
A ventilation system, characterized in that the suction holes are formed by gaps in each of the tubular members. A ventilation system that can be attached to road paved vehicles.
A suction part located at the top of the asphalt mixture when paving the road,
A suction part for sucking smoke and
And an exhaust portion which is attached to the suction unit,
The exhaust portion is a flexible duct, and is
The suction portion is composed of at least one tubular member arranged in the vehicle width direction.
Said tubular member, Propelled by one at least one suction hole,
The road paved vehicle has a tiltable canopy and
A ventilation system , wherein the exhaust unit is attached to the canopy. A ventilation system that can be attached to road paved vehicles.
A suction part located at the top of the asphalt mixture when paving the road,
A suction part for sucking smoke and
And an exhaust portion which is attached to the suction unit,
The exhaust portion is a flexible duct, and is
The suction portion is composed of at least one tubular member arranged in the vehicle width direction.
Said tubular member, Propelled by one at least one suction hole,
The road paved vehicle is provided with a tiltable strut.
A ventilation system , wherein the exhaust unit is attached to the support column. Wherein the suction holes in the torso portion of the tubular member is formed, the ventilation system according to any of claims 1-5. The ventilation system according to any one of claims 1 to 6 , wherein the tip of the exhaust portion on the exhaust side has a structure capable of changing the exhaust direction. The ventilation system according to claim 7 , wherein as a structure capable of changing the exhaust direction, a structure for changing the direction of a member attached to the tip of the exhaust portion is used. The member may be capable of covering the front end of the exhaust part, the ventilation system according to claim 8. The ventilation system according to claim 7 , wherein as a structure capable of changing the exhaust direction, a structure capable of changing the direction of the tip of the exhaust portion is used. The ventilation system according to any one of claims 1 to 10 , wherein the suction portion is provided at the lower part of the operation table or the control box. A road paved vehicle comprising the ventilation system according to any one of claims 1 to 11.

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