JP2019007248A - Ventilation system and road paving vehicle using the same - Google Patents

Abstract

To provide a ventilation system capable of efficient suction of smoke and preventing an operator and surrounding people from inhaling smoke expelled from an exhaust duct.SOLUTION: A ventilation system 12 installed to a road paving vehicle has a suction part 2 arranged at a position located above an asphalt mixture during road paving, a suction part 4 for sucking in smoke, and an exhaust part 5 attached to the suction part 4. The exhaust part 5 includes an exhaust duct 5b having flexibility. The suction part 2 is comprised of a plurality of nested-type cylindrical members 2a, 2b, 2c, 2d, 2e being uneven in level and arranged in the vehicle width direction. In the cylindrical members 2a, 2b, 2c, 2d, 2e, gaps between each cylindrical member function as suction holes. Suction holes are also provided in the trunks of the cylindrical members.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a ventilation system, and more particularly, to a ventilation system for oily smoke and the like generated during road paving.

  Conventionally, an oil smoke discharge 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, a horizontally long suction portion is provided under the operation console or the control box, and smoke is sucked by the exhaust fan portions attached to the left and right of the suction portion. A structure in which smoke is discharged to the left and right of the vehicle body by exhaust duct portions arranged on the right and left sides has been adopted. Thereby, in the apparatus of patent document 1, while the driver | operator was able to visually recognize asphalt compound material, the suction | inhalation of the smoke by a driver | operator was prevented.

Japanese Patent Laid-Open No. 2006-17391

  In paragraph 0016 of Patent Document 1, as a specific structure of the suction portion, a rectangular parallelepiped shape is employed, and a structure in which a lower surface is opened is employed. However, such a conventional structure of the suction part has a problem that it cannot suck smoke efficiently.

  Further, in the apparatus 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. Smoke may be sucked.

  Therefore, the present invention provides a ventilation system capable of efficiently sucking smoke and preventing the driver and the surrounding person from sucking smoke exhausted from the exhaust duct. For the purpose.

  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 pavement vehicle, and includes a suction part arranged at a position located above the asphalt mixture at the time of road pavement, a suction part for sucking smoke, and a suction part. The exhaust part is a duct having flexibility, the suction part is composed of at least one cylindrical member arranged in the vehicle width direction, and the cylindrical member is at least one suction member. Has a hole.

  Preferably, the suction part is composed of a plurality of cylindrical members arranged in steps.

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

  Preferably, the suction part is composed of a plurality of cylindrical members arranged in the vehicle width direction, and suction holes may be formed by gaps between the cylindrical members.

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

  Preferably, the road pavement vehicle includes a canopy that can be tilted, and the exhaust part is attached to the canopy.

  Preferably, the road pavement vehicle includes a support column that can be tilted, and the exhaust unit is attached to the support column.

  Preferably, the exhaust-side tip of the exhaust unit may have a structure that can change the exhaust direction.

  Preferably, as a structure that can change the exhaust direction, a structure that changes the direction of a member attached to the tip of the exhaust part may be used.

  Preferably, the member may cover the tip of the exhaust part.

  Preferably, as a structure capable of changing the exhaust direction, a structure capable of changing the direction of the tip of the exhaust part may be used.

  Preferably, the suction part is provided in the lower part of the driving console or the control box.

  Further, the present invention is a ventilation system attached to a road pavement vehicle, wherein a suction part disposed at a position located on an asphalt mixture at the time of road pavement, a suction part for sucking smoke, and a suction The suction part is composed of at least one cylindrical member arranged in the vehicle width direction, and the cylindrical member has at least one suction hole.

  Further, the present invention is a ventilation system attached to a road pavement vehicle, wherein a suction part disposed at a position located on an asphalt mixture at the time of road pavement, a suction part for sucking smoke, and a suction And an exhaust part attached to the part. The exhaust part is a duct having flexibility.

  Further, the present invention is a ventilation system attached to a road pavement vehicle, wherein a suction part disposed at a position located on an asphalt mixture at the time of road pavement, a suction part for sucking smoke, and a suction An exhaust part attached to the exhaust part, and an exhaust side tip of the exhaust part has a structure capable of changing the exhaust direction.

  Moreover, this invention is a road pavement vehicle carrying said ventilation system.

  According to the present invention, the suction part is a cylindrical member and the suction hole is formed, so that smoke such as oily smoke is efficiently sucked. Since the oil smoke itself has heat, exhausting the oil smoke or the like with the ventilation system of the present invention can suppress an increase in the temperature of the work environment, leading to improvement of the work environment.

  Further, by making the duct of the exhaust part flexible, the degree of freedom of the place where the exhaust duct is installed is increased. If it is a road paved vehicle with a canopy, an exhaust duct can be installed at the top of the canopy, and if it is a road paved vehicle without a canopy, it can be installed in a suitable place by erecting a column. . Further, since the exhaust duct has flexibility, it is easy to adjust the direction of the tip of the exhaust duct. In addition, when the exhaust duct is attached to the canopy or the support column, if the exhaust duct is flexible, even if the canopy or the support column is tilted, the exhaust duct is appropriately deformed so that the canopy or the support column can be easily Can be defeated.

  Efficient suction is possible by making the suction part a plurality of cylindrical members arranged in steps, or by making the diameter of the outer part in the vehicle width direction smaller than the diameter of the center part of the vehicle width Become.

  Efficient suction is also possible by using the gaps between the cylindrical members as the suction holes.

  Also, efficient suction can be realized by using a hole provided in the body portion of the cylindrical member as the suction hole.

  The road pavement vehicle is equipped with a tiltable canopy and struts, and by attaching the exhaust part to the canopy and struts, the exhaust duct can be appropriately deformed when tilting and the exhaust part can be made compact. The exhaust duct does not get in the way during construction, transport, storage, and transportation.

  By adopting a structure that can change the exhaust direction, 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 or the like may spread around. Therefore, by making it possible to change the exhaust direction, adjustment can be made so that the exhaust is not exhausted to the sidewalk or the house side.

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

  By providing the suction part at the lower part of the operation console or the control box, more efficient exhaust is realized while the operator visually recognizes the asphalt mixture.

  These and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

FIG. 1 is a perspective view of a road pavement 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 pavement vehicle 1 when viewed obliquely from the left front. FIG. 3 is a rear view of the road pavement vehicle 1 as viewed from the driving console 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 seen from the upper side of the road pavement vehicle 1. FIG. 6 is a perspective view of the ventilation system 12 and the canopy 6 mounted on the road pavement vehicle 1. FIG. 7 is an enlarged side view of the vicinity of the operation console 7 and the screed 9. FIG. 8 is a perspective view of the suction part 2. FIG. 9 is a vertical cross-sectional perspective view of the suction portion 2 in the laterally long direction. FIG. 10 is a side view of the suction part 2. FIG. 11 is a diagram illustrating the internal structure of the suction unit 4. FIG. 12 is a side view showing a state when the canopy 6 is defeated. FIG. 13 is a perspective view when the exhaust direction regulating member 13 is attached to the exhaust tip 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 5 a is covered by the exhaust direction regulating member 13. FIG. 16 is a perspective view when a turning type exhaust direction changing member 5c is attached to the front end side of the exhaust front end portion 5a. FIG. 17 is a rear view of the road pavement vehicle 1 when the canopy is not used. FIG. 18 is a left side view of the road pavement vehicle 1 when the canopy is not used. FIG. 19 is a diagram illustrating a modification of the suction unit 2. FIG. 20 is a drawing-substituting photograph when the state when the smoke is sucked using the suction unit 2 shown in FIG. 8 is photographed from the back side. FIG. 21 is a drawing substitute 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 pavement 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 pavement vehicle 1 when viewed obliquely from the left front. FIG. 3 is a rear view of the road pavement vehicle 1 as viewed from the driving console 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 seen from the upper side of the road pavement vehicle 1. FIG. 6 is a perspective view of the ventilation system 12 and the canopy 6 mounted on the road pavement 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 paving vehicle 1 includes a driving console 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 out to the rear of the vehicle by a conveyor existing inside the road paved vehicle 1. The asphalt mixture fed backward is leveled by the screed 9. The operator operates the driving console 7 while sitting on a chair (not shown). In addition, the operator appropriately stands on the screed step 10 and operates the operation console 7. At the time of operation, the operator appropriately performs the operation while visually checking the state of the asphalt mixture from between the screed 9 and the vehicle body.

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

  A canopy 6 that can rise and fall is attached to the road pavement vehicle 1. As shown in FIG. 6, the canopy 6 has left and right brackets 6a and 6d fixed to the vehicle body, and two sets of struts 6c and 6b and 6e and 6f that are rotatably attached to the brackets 6a and 6d. A main roof portion 6i rotatably attached to the columns 6c and 6b and 6e and 6f, and an auxiliary roof portion 6g rotatably attached to the main roof portion 6i by the rotation portion 6h. Is provided.

  By inserting pins (not shown) into the brackets 6a and 6d, it is possible to restrict the movement of the pillars when the pillars 6c and 6b and 6e and 6f are raised 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 where the canopy 6 is raised and the auxiliary roof portion 6g is opened.

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

  Since the exhaust duct 5b has flexibility, if the road pavement vehicle 1 has the canopy 6, the oil duct can be discharged upward by disposing the exhaust duct 5b up to the top of the canopy 6. Moreover, if the metal fitting which attaches the exhaust front-end | tip part 5a can be rotated with respect to a support | pillar, the direction of the exhaust front-end | tip part 5a can be changed. At this time, if the exhaust duct 5b having flexibility is used, the direction of the exhaust tip 5a can be easily changed.

  FIG. 7 is an enlarged side view of the vicinity of the operation console 7 and the screed 9. Hereinafter, the arrangement position of the suction part 2 will be described with reference to FIGS. 3 and 7. As shown in FIG. 3, the suction part 2 is arrange | positioned in the vehicle width direction. As shown in FIG. 7, the suction unit 2 is attached to the lower part of the operation console 7 and the control box 8. In addition, as shown in FIG. 7, the suction portion 2 is disposed between the screed 9 and the suction portion 2 so that a gap W for viewing the asphalt mixture is generated. As a result, the operator can work from the gap W while visually checking the state of the asphalt mixture.

  However, how much the gap W is provided is not particularly limited. To the last, the arrangement position of the suction part 2 may be the lower part of the operation console 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 arrangement position of the suction unit 2 may be the lower part of the driving console 7 or the control box 8. However, as long as the suction part 2 is arranged at a position where it is easy to suck smoke, it is not always necessary to be arranged at the lower part of the operation console 7 or the control box 8. Therefore, the suction part 2 should just be arrange | positioned in the location located in the upper part of the asphalt compound material at the time of road paving.

  In addition, the suction part 2 may be arrange | positioned at the vehicle width direction whole, and may be arrange | positioned at least in part.

  FIG. 8 is a perspective view of the suction part 2. FIG. 9 is a vertical cross-sectional perspective view of the suction portion 2 in the laterally long direction. FIG. 10 is a side view of the suction part 2. Hereinafter, the specific structure of the suction part 2 will be described with reference to FIGS. 8 to 10.

  The suction part 2 includes a first cylindrical member 2e, second cylindrical members 2c and 2d, and third cylindrical members 2a and 2b. The outer dimension of each cylindrical member becomes smaller in the order of the first cylindrical member 2e, the second cylindrical members 2c and 2d, and the third cylindrical members 2a and 2b. It has a structure. In the drawing, the cylindrical member is assumed to be cylindrical, but is not limited to a cylindrical shape, and may be a cylindrical member having a polygonal cross section as long as the inside is hollow. Further, the number of cylindrical members is not limited to the illustrated example. The suction part should just consist of at least 1 cylindrical member.

  Since each cylindrical member is arranged in a nested manner, a gap is generated between each cylindrical member. There is a gap 2g between the first cylindrical member 2e and the second cylindrical member 2c. Similarly, a gap 2f exists between the second cylindrical member 2c and the third cylindrical member 2a, and between the first cylindrical member 2e and the second cylindrical member 2d. A gap 2h exists, and a gap 2i exists between the second cylindrical member 2d and the third cylindrical 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 drawing, the suction hole h is provided only in the first cylindrical member 2e, but the suction hole h may be provided in another cylindrical member.

  Furthermore, the end portions of the third cylindrical members 2a and 2b are partially covered and have suction holes 2j and 2k.

  Thus, the suction part 2 has a suction hole due to a gap caused by the step of the cylindrical member, a suction hole provided in the barrel portion of the cylindrical member, and a suction hole provided in the end of the cylindrical member. ing.

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

  Also, as shown in FIG. 9, one end of the narrower second cylindrical member 2d, 2c is inserted partway through one end of the thicker first cylindrical member 2e, and similarly, the third position One end of the cylindrical members 2a and 2b is inserted partway through one end of the second cylindrical members 2c and 2d.

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

  The effect by the structure of such a suction part 2 is demonstrated. The hole h3 connecting the suction duct portion 3 is a larger hole in accordance with the diameters of the suction ducts 3a and 3b. Although the present invention is not limited, if the diameters of the suction ducts 3a and 3b are too small, the resistance during suction increases, and the burden on the hydraulic motor 4a that rotates the fan of the suction unit 4 increases. The diameters 3a and 3b are determined based on the ability of the hydraulic motor 4a to be selected. Therefore, the size of the cylindrical member in the portion communicating with the suction ducts 3a and 3b (here, the diameter of the first cylindrical member 2e) is determined to some extent by the diameter of the suction ducts 3a and 3b. .

  At that time, it is naturally possible to perform suction by extending the tubular member toward the outside in the vehicle width direction with the diameter of the first tubular member 2e and forming the suction hole h in the body portion. is there. However, when further improving the suction efficiency, the suction force is increased by reducing the diameter of the cylindrical member, and more smoke can be sucked. Therefore, in this embodiment, it can be said that the suction force is increased to the extent that the suction resistance does not increase by decreasing the diameter toward the outer side by the nested-type cylindrical member. Furthermore, if the suction hole h is formed only in the body portion, the resistance may be excessively large depending on the size of the suction hole h. Therefore, by making the gap between the cylindrical members a suction hole, the suction efficiency can be improved while preventing the resistance from becoming too large.

  Thus, it becomes possible to perform suction efficiently by using the structure of the suction portion 2 disclosed in the present embodiment.

  In addition, it is possible to make the diameter of the cylindrical member 2e small by inserting an intermediate member with a small diameter between the suction ducts 3a and 3b and the cylindrical member 2e.

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

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

  FIG. 12 is a side view showing a state when the canopy 6 is defeated. When the canopy 6 is tilted, the pillars 6c, 6b, 6e, 6f are tilted around the brackets 6a, 6d, but the brackets 6a, 6d, the pillars 6c, 6b, 6e, 6f, and the main roof portion 6i. Since the parallel crank is constituted by the frame, the main roof portion 6i falls down horizontally as shown in FIG. Moreover, the auxiliary roof part 6g can be closed to the main roof part 6i side using the rotation part 6h.

  In this way, by defeating the canopy 6, the canopy 6 can be kept out of 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, and the exhaust unit 5 can be prevented from getting in the way at the time of forwarding, storing, and carrying, like the canopy 6. In addition, it cannot be overemphasized that you may construct in the state which knocked down the canopy 6. FIG.

(Modification)
In the above embodiment, the operator cannot change the direction of the exhaust tip 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, in the present invention, it can be seen that the exhaust-side tip of the exhaust part 5 preferably has a structure capable of changing the exhaust direction.

  As a method of changing the exhaust direction, two modified examples are presented here, but are not limited to the examples described below 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 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 5 a is covered by the exhaust direction regulating member 13.

  The exhaust front end portion 5a is attached to the main roof portion 6i of the canopy 6 via a bracket 13c. The exhaust direction regulating member 13 is a U-shaped member whose upper and lower sides are L-shaped. An elongated hole 13b is formed in the upper and lower L-shaped angles. A bracket is vertically attached to the exhaust tip 5a.

  The upper and lower brackets of the exhaust tip 5a and the upper and lower angles of the exhaust direction regulating member 13 are rotatably connected by the upper and lower butterfly bolts 13a. Therefore, the direction of the exhaust direction regulating member 13 can be changed by loosening the butterfly 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 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 in FIG. 14, the exhaust direction can be directed to the outside of the vehicle. In this manner, the exhaust direction regulating member 13 is pivotally attached to the tip of the exhaust part 5 so that the exhaust direction can be changed.

  Further, as shown in FIG. 15, rain or the like enters the exhaust part 5 by using the elongated hole 13 b to cover the opening at the front end of the exhaust front end part 5 a by the exhaust direction regulating member 13. Can be prevented. Therefore, it is possible to prevent rain from entering the exhaust part 5 and intruding into the suction part 4 as a result of work in rainy weather. As a result, it leads to failure prevention.

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

  As described above, as a modification, the structure of changing the exhaust direction by indirectly regulating the flow of smoke exhaust by using the member 13 attached to the tip of the exhaust tip 5a, and the exhaust tip 5a. A structure in which the exhaust direction is changed by using a member 5c that directly changes the exhaust direction at the tip of the cylinder is conceivable. However, as long as the exhaust direction can be changed, structures other than those shown in the drawings may be used in the present invention.

  FIG. 17 is a rear view of the road pavement vehicle 1 when the canopy is not used. FIG. 18 is a left side view of the road pavement vehicle 1 when the canopy is not used. When the canopy is not used, the columns 6e and 6f are attached to a bracket 6d attached to the vehicle body so as to be tiltable. And the bracket 13c is attached to the upper end part of the support | pillars 6e and 6f. The exhaust tip 5a is attached to the bracket 13c. Thus, when the support posts 6e and 6f are tilted, the flexible exhaust duct 5b is appropriately deformed and follows the support posts 6e and 6f and falls down.

  Thus, even when the canopy is not used, it is possible to use the flexible exhaust duct 5b, and the exhaust unit 5 should not be in the way during storage, transportation, and forwarding. Can do. Of course, the pillars 6e and 6f may be brought down during construction.

  FIG. 19 is a diagram illustrating a modification of the suction unit 2. As shown in FIG. 19A, the suction part 2 may have a structure in which one or more suction holes h are provided in one cylindrical member. In the case of FIG. 19A, the end of the cylindrical member may not have a structure like the suction hole 2j, and for example, a round hole or a long hole may be provided (FIG. 19 ( The same applies to b) and (c). The holes h3 for communicating the suction ducts 3a and 3b may be substantially the same as the diameters of the suction ducts 3a and 3b, or smaller than the diameters of the suction ducts 3a and 3b. You may make it make it communicate by another member which connects h3.

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

  As shown in FIG. 19D, a truncated cone-shaped cylindrical member may be used as long as the diameter becomes smaller toward the outer side in the vehicle width direction. In this case, a suction hole h2 may be provided at the end. The holes h3 may be arranged in the vertical direction as shown in FIG.

  In addition, the shape of the suction part 2 does not need to be symmetrical.

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

  FIG. 20 is a drawing-substituting photograph when the state when the smoke is sucked using the suction unit 2 shown in FIG. 8 is photographed from the back side. In FIG. 20, the state of the smoke before suction | inhalation and the state of the smoke after suction | inhalation are shown with the photograph. FIG. 21 is a drawing substitute 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, it was confirmed that smoke was efficiently sucked from the entire suction holes 2h, 2i, and 2k as indicated by white arrows in FIG.

  FIG. 22 is a diagram schematically showing the flow of smoke. The flow of smoke is indicated by dashed arrows. If the suction part 2 of this embodiment was used, it has confirmed that smoke was efficiently inhaled from between each cylindrical member.

  Although the present invention has been described in detail above, the above description is merely illustrative of the present invention in all respects and is not intended to limit the scope thereof. It goes without saying that various improvements and modifications can be made without departing from the scope of the present invention. The constituent features of the invention disclosed in this specification shall be established as independent inventions. Inventions in which the constituent elements are combined by any combination method are also included in the present invention.

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

DESCRIPTION OF SYMBOLS 1 Road pavement vehicle 2 Suction part 2e 1st cylindrical member 2c, 2d 2nd cylindrical member 2a, 2b 3rd cylindrical member 2g, 2f, 2h, 2i Clearance (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 5b Exhaust duct 5c Exhaust direction change member 5d Long hole 6 Canopy 6a, 6d Bracket 6c, 6b, 6e, 6f Post 6i Main roof part 6h Rotating part 6g Auxiliary roof part 7 Operation control table 8 Control box 9 Screed 10 Screed step 11 Hopper 12 Ventilation system 13 Exhaust direction regulating member 13a Butterfly bolt 13b Slot 13c Bracket W Gap

Claims (16)

A ventilation system attached to a road paving vehicle,
A suction part located at the top of the asphalt mixture during road paving,
A suction section for sucking smoke;
An exhaust part attached to the suction part,
The exhaust part is a duct having flexibility,
The suction part is composed of at least one cylindrical member arranged in the vehicle width direction,
The ventilation system, wherein the tubular member has at least one suction hole.   The ventilation system according to claim 1, wherein the suction part is composed of a plurality of cylindrical members arranged in steps.   The ventilation system according to claim 1 or 2, wherein the suction portion has a smaller diameter in the vehicle width direction outer portion than in the vehicle width center portion. The suction part is composed of a plurality of cylindrical members arranged in the vehicle width direction,
The ventilation system according to any one of claims 1 to 3, wherein a suction hole is formed by a gap between each cylindrical member.   The ventilation system according to any one of claims 1 to 4, wherein a suction hole is formed in a body portion of the cylindrical member. The road paved vehicle has a canopy that can be tilted,
The ventilation system according to claim 1, wherein the exhaust part is attached to a canopy. The road paved vehicle includes a tiltable column,
The ventilation system according to claim 1, wherein the exhaust part is attached to a support column.   The ventilation system according to any one of claims 1 to 7, wherein a tip of an exhaust part on an exhaust side has a structure capable of changing an exhaust direction.   The ventilation system according to claim 8, wherein a structure for changing a direction of a member attached to a tip of the exhaust part is used as a structure capable of changing an exhaust direction.   The ventilation system according to claim 9, wherein the member can cover a tip of the exhaust part.   The ventilation system according to claim 8, wherein a structure capable of changing a direction of a tip of an exhaust part is used as a structure capable of changing an exhaust direction.   The ventilation system according to any one of claims 1 to 11, wherein the suction part is provided in a lower part of the operation console or the control box. A ventilation system attached to a road paving vehicle,
A suction part located at the top of the asphalt mixture during road paving,
A suction section for sucking smoke;
An exhaust part attached to the suction part,
The suction part is composed of at least one cylindrical member arranged in the vehicle width direction,
The ventilation system, wherein the tubular member has at least one suction hole. A ventilation system attached to a road paving vehicle,
A suction part located at the top of the asphalt mixture during road paving,
A suction section for sucking smoke;
An exhaust part attached to the suction part,
The ventilation system, wherein the exhaust part is a duct having flexibility. A ventilation system attached to a road paving vehicle,
A suction part located at the top of the asphalt mixture during road paving,
A suction section for sucking smoke;
An exhaust part attached to the suction part,
The ventilation system characterized by having the structure where the front-end | tip of the exhaust side of an exhaust part can change an exhaust direction.   A road pavement vehicle equipped with the ventilation system according to any one of claims 1 to 15.