JP6381085B1 - Asphalt sprayer - Google Patents

Abstract

[PROBLEMS] To efficiently capture an asphalt emulsion by means of a metal lattice structure to prevent scattering of the asphalt emulsion, prevent damage easily, suppress an increase in weight, and reduce an operator's burden. Provide food that can be used.
A hood 100 according to the present invention is a hood for an asphalt sprayer that covers the periphery of a nozzle that injects an asphalt emulsion, and includes an externally threaded portion that is screwed into a metal tube of the asphalt sprayer, A relay metal body 200 having an in-pipe threaded portion that is screwed into the nozzle, an opening through which the asphalt emulsion sprayed from the nozzle screwed into the in-pipe threaded portion passes, and an upper surface opening portion and a lower surface opening portion. A metal grid 320 is disposed, and a metal grid structure 300 supported by the relay metal body 200 by applying a load to the relay metal body 200.
[Selection] FIG.

Description

  The present invention relates to a hood for an asphalt sprayer that covers the periphery of a nozzle that sprays an asphalt emulsion.

  Conventionally, in road pavement work, an asphalt emulsion is sometimes sprayed on the road surface in order to improve asphalt paste before the actual asphalt pavement.

  In spraying asphalt emulsion, the worker has a metal tube equipped with a nozzle for spraying the asphalt emulsion supplied from the asphalt sprayer, and sprays the asphalt emulsion sprayed from the nozzle almost evenly on the road surface. The work is done.

By the way, in such work, there has been a problem that the sprayed asphalt emulsion is scattered on the wind and adheres to the outer wall of the house around the pavement work or to the parked vehicle. Therefore, in order to solve such a problem, for example, cited reference 1 (Japanese Patent Laid-Open No. 2014-91996) discloses a hood for a liquid spreader that is detachably attached to a discharge hose of a liquid spreader, There is disclosed a hood for a liquid spreader comprising a hood body having an inlet for connecting the discharge hose to a wall and having an opening on a bottom surface, and an elastomeric cylindrical body continuously provided from the bottom of the hood body. Yes.
JP 2014-91996 A

  In road pavement construction sites, work tools are not handled very carefully, so durability is required. However, elastomeric cylinders used in conventional hoods can be easily damaged. There was a problem that there was.

  On the other hand, if the elastomer tubular body as described above is replaced with a metal tubular body as it is, a new problem that the weight of the hood will increase and the burden on the operator will increase. Will occur.

In order to solve the above-described problems, an asphalt sprayer according to the present invention is an asphalt sprayer including a hood that covers the periphery of a nozzle for injecting an asphalt emulsion, and is screwed into a metal tube of the asphalt sprayer. A relay metal body having an outer threaded portion to be threaded, an inner threaded portion to be threadedly engaged with the nozzle, an opening through which the asphalt emulsion sprayed from the nozzle threadedly engaged with the inner threaded portion is passed, and an upper surface besides opening and the opening on the bottom with a metal grating is disposed, and a metal grid structure is supported on the relay metal body by weight with respect to the relay metal body, Tona is, the opening Is characterized in that an arc portion having an arc shape is provided .

The asphalt sprayer according to the present invention is characterized in that the metal lattice is a mesh wire net.

The asphalt sprayer according to the present invention is characterized in that the metal lattice is a punching metal.

The asphalt sprayer according to the present invention further includes an anti-swing member including a wire member provided with a loop part and an adsorption head part including a cylindrical magnet member at an end thereof, The member is attached to the relay metal body by inserting the loop portion below the externally threaded portion of the relay metal body.

  The hood according to the present invention has a relay metal body having an opening through which an asphalt emulsion sprayed from a nozzle passes, and a metal grid arranged in addition to the upper surface opening and the lower surface opening, and the relay metal body According to the hood according to the present invention, the asphalt emulsion can be efficiently captured by the metal lattice structure. Thus, scattering of the asphalt emulsion can be prevented, it is not easily broken, an increase in weight is suppressed, and the burden on the operator can be reduced.

It is a figure explaining the structure of the injection part of the asphalt emulsion in the asphalt sprayer. It is a figure which shows the nozzle 10 used for the injection part of the asphalt emulsion of the asphalt sprayer 1. It is a figure which shows the base material 205 which comprises the relay metal body 200. FIG. It is a figure which shows the assembly process of the relay metal body. It is a figure which shows the assembly process of the relay metal body. It is the figure which looked at the relay metal body 200 which concerns on embodiment of this invention from the opening part 30 side. 5 is a diagram showing an assembly process of the metal lattice structure 300. FIG. It is the figure which looked at the frame part 310 in metal lattice structure 300 from the side. FIG. 6 is a diagram showing a configuration of a rocking prevention member 400. It is a figure which shows the assembly process of the food | hood 100 which concerns on embodiment of this invention. It is a figure explaining the attachment of the metal grid | lattice structure 300 with respect to the relay metal body 200. FIG. It is a figure which shows the food | hood 100 which concerns on embodiment of this invention. It is a figure which shows the usage example of the food | hood 100 which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a view for explaining the configuration of an asphalt emulsion spraying section in the asphalt sprayer 1. FIG. 1 shows the configuration of an asphalt emulsion spraying unit that is not provided with a hood for preventing scattering of the asphalt emulsion.

  FIG. 2 is a view showing the nozzle 10 used in the asphalt emulsion spraying section of the asphalt sprayer 1.

  Asphalt emulsion fed by pressure is supplied from the main body of the asphalt sprayer 1 into the metal tube 4. A hollow tip portion 5 connected to the metal tube 4 is provided with a threaded portion 7 in the tube, and the threaded portion 15 of the nozzle 10 is screwed into the threaded portion 7 in the tube. Thus, the nozzle 10 is attached to the tip 5.

  The nozzle 10 is provided with a head portion 13 and a threaded portion 15 connected to the head portion 13. The head portion 13 is provided with a recess 20. The recess 20 is provided with a hollow portion in the nozzle 10 and an opening 30 penetrating the outside. The asphalt emulsion fed from the opening 30 is jetted from the opening 30, but the asphalt emulsion jetted from the opening 30 does not spread in a substantially conical shape, but spreads in a substantially triangular plane that apexes the opening 30. Thus, the hole shape of the opening 30 is designed.

  In the asphalt emulsion spraying operation, the worker has a metal tube 4 provided with a nozzle 10 for injecting the asphalt emulsion supplied from the asphalt sprayer 1, and the asphalt emulsion to be injected from the nozzle 10 is substantially evenly applied to the road surface. Sprinkle. In such an operation, the sprayed asphalt emulsion is scattered on the wind and adheres to the outer wall of the house around the paving work or to the parked vehicle. The hood 100 according to the present invention prevents such scattering of the asphalt emulsion. Hereinafter, the detailed configuration of the hood 100 according to the present invention will be sequentially described.

  First, the relay metal body 200 that forms part of the hood 100 according to the present invention and is attached in the vicinity of the nozzle 10 will be described. FIG. 3 is a view showing the base material 205 constituting the relay metal body 200. The relay metal body 200 is configured by assembling various parts to the base material 205, but the parts that can be used to configure the relay metal body 200 are not limited to the modes described below. However, since the parts described below are general-purpose parts, it is convenient for configuring the relay metal body 200 at a low cost.

  The base material 205 is made of, for example, an iron plate. The base material 205 is a rectangular substrate 210, two swash plates 220 extending from two opposing sides of the substrate 210, and two other opposing sides of the substrate 210, and is parallel to each other. And two arcuate plates 230.

  Below the base material 205 is an opening 250. It is assumed that the asphalt emulsion sprayed from the nozzle 10 passes through the opening 250. Further, the arc plate 230 has an arc portion 235 whose end is cut out in an arc shape. Therefore, the opening 250 includes an arc portion 235 having an arc shape. By including such an arc portion 235 in the opening 250, the metal lattice structure 300 can be easily attached to the relay metal body 200 as described later.

  The substrate 210 has a first surface 211 as a main surface and a second surface 212 that is in a front-back relationship with the first surface 211. The substrate 210 is provided with a through hole 215 that penetrates between the first surface 211 and the second surface 212.

  Next, as shown in FIG. 4, the hexagonal nipple 260 and the washer 270 are assembled to the base material 205 as described above. The hexagon nipple 260 is provided with a through pipe portion 261 therein. The hexagon nipple 260 is a general-purpose metal part used as a pipe joint for fluid. The hexagonal nipple 260 includes a hexagonal body 263 to which a rotational force is applied by a spanner or a wrench, and an externally threaded portion 265 continuously provided above and below the hexagonal nipple 260.

  One external threaded portion 265 of the hexagonal nipple 260 is inserted through the washer 270 and further through the through hole 215 of the substrate 210.

  Subsequently, as shown in FIG. 5, the hexagon socket 280 and the washer 270 are assembled from the opening 250 side of the base material 205. FIG. 6 is a view of the relay metal body 200 according to the embodiment of the present invention in which the hexagon socket 280 and the washer 270 are assembled as seen from the opening 30 side.

  The hexagon socket 280 is also a general-purpose metal part used as a pipe joint for fluid. Thus, in this embodiment, the relay metal body 200 can be configured at low cost by using general-purpose parts such as the hexagon nipple 260, the hexagon socket 280, and the washer 270. However, in the present invention, using these components is not an essential component.

  A hexagonal body portion 283 to which a rotational force is applied by a spanner or a wrench is formed on the outer periphery of the hexagon socket 280, and an in-pipe threaded portion 285 is formed on the inner peripheral surface of the hexagon socket 280.

  In FIG. 5, a pipe outer threaded portion 265 of the hexagonal nipple 260 exposed from the through hole 215 of the substrate 210 to the second surface 212 side is inserted into a washer 270, and further, an inner threaded portion 285 of the hexagonal socket 280. Is screwed into the external pipe threaded portion 265 of the hexagonal nipple 260. As a result, the substrate 210 of the base material 205 is sandwiched between the hexagon socket 280 and the hexagon nipple 260, and all components are integrated.

  Next, a description will be given of the metal lattice structure 300 that is supported by the relay metal body 200 configured as described above and that is the main component for capturing the asphalt emulsion in the hood 100 according to the present invention.

  FIG. 7 is a view showing an assembly process of the metal lattice structure 300. FIG. 7A shows a skeleton 310, and FIG. 7B shows a plain woven mesh wire mesh 320 attached to the skeleton 310. A metal grid structure 300 is shown.

  The skeleton part 310 can be constituted by connecting, for example, a 35 mm diameter stainless steel rod by welding or the like. For example, a plain woven mesh wire mesh 320 in which stainless steel wires having a diameter of 0.47 mm are woven at an interval of 10 mesh / inch is attached to the four side surfaces of the skeleton 310, and the metal lattice structure 300 and Is done.

  The plain woven mesh wire mesh 320 constituting the metal lattice structure 300 captures the asphalt emulsion in the hood 100 according to the present invention. Most of the asphalt emulsions to be dispersed are those having a charge such as a cation type or an anion type, and such an asphalt emulsion has such a charge when passing through the plain weave mesh wire mesh 320. By the action, the probability of adhering to the metal wire constituting the plain weave mesh wire net 320 is increased. Thereby, it does not pass through the space between the wires knitted to form the mesh.

  In addition, if a coating such as water repellent finish is applied to the plain weave mesh wire mesh 320, it is convenient for cleaning after use. It has been confirmed that the capture rate of asphalt emulsion is reduced.

  In addition, the use of the plain woven mesh wire mesh 320 for the metal lattice structure 300 is important for reducing the weight of the hood 100 according to the present invention. In this embodiment, the plain woven mesh wire mesh 320 is used as the metal grid used for the metal grid structure 300, but the type of the metal grid is not limited to this, and the punching metal is used as the metal grid. Etc. can also be used. Like the plain woven mesh wire mesh 320, the punching metal can contribute to weight reduction of the metal lattice structure 300 while capturing the asphalt emulsion.

  In addition, the dimension of the stainless steel rod used for the skeleton 310 and the specification of the mesh used for the plain woven mesh wire mesh 320 are not limited to the above. As the size of the stainless steel rod of the skeleton 310, any metal can be used as long as it gives the metal lattice structure 300 a predetermined strength enough to withstand on-site use and does not become overweight. It does not matter. In addition, the finer the mesh of the plain weave mesh wire mesh 320, the higher the capture rate of the asphalt emulsion can be expected. On the other hand, it leads to an increase in weight. Good.

FIG. 8 is a side view of the skeleton 310 in the metal lattice structure 300. When the side surface of the skeleton 310, that is, the metal lattice structure 300 is viewed as a rectangle, the two angles θ ₁ and θ ₂ on the upper surface opening 330 side are set to obtuse angles larger than 90 °, and _two of the lower surface opening 340 The angles θ ₃ and θ ₄ are preferably set to acute angles smaller than 90 °. According to such a setting, when the metal lattice structure 300 is viewed from the side, it can be formed into a divergent shape, and the asphalt that is ejected from the nozzle 10 and spreads in a substantially triangular plane that apexes the opening 30. It is suitable as a hood for covering the emulsion. In this embodiment, θ ₁ = 110 °, θ ₂ = 110 °, θ ₃ = 60 °, and θ ₄ = 80 °, but the present invention is not limited to these angles.

  Next, in the hood 100 according to the present invention, the metal lattice structure 300 is used in a form that is supported by the relay metal body 200 by loading the relay metal body 200. At this time, The metal lattice structure 300 may swing. Therefore, in the hood 100 according to the present invention, the swing prevention member 400 is used to prevent this swing.

  The swing prevention member 400 includes a wire member 420 provided with a loop portion 425 and an adsorption head portion 410 in which a cylindrical magnet member 415 is built in an end portion.

  The suction head portion 410 is a metal part, and includes a head base portion 411 and a ring portion 413 provided so as to extend from the head base portion 411. A cylindrical magnet member 415 made of a strong magnetic material such as a neodymium magnet is embedded in the head base 411. Further, the wire member 420 is inserted into the ring portion 413 and the caulking portion 427 is formed so that the wire member 420 and the suction head portion 410 cannot be separated.

  In the present embodiment, two suction head portions 410 as described above are provided for the loop portion 425, but the number of suction head portions 410 provided for the loop portion 425 is not limited to this. . In the present embodiment, when the metal lattice structure 300 loads the relay metal body 200, the number of the swash plates 220 that mainly receive the load is two. I am trying.

  The hood 100 according to the present invention is assembled after preparing the relay metal body 200, the metal lattice structure 300, and the rocking prevention member 400 as described above. FIG. 10 is a diagram illustrating an assembly process of the hood 100 according to the embodiment of the present invention.

  In FIG. 10, the loop portion 425 of the swing preventing member 400 is inserted into the hexagonal body 263 below the external threaded portion 265 of the relay metal body 200, so that the swing preventing member 400 is connected to the relay metal body 200. To be attached to.

  Subsequently, the outer metal threaded portion 265 of the relay metal body 200 is screwed into the inner threaded portion 7 (not shown in FIG. 10) formed at the distal end portion 5 of the metal tube 4, thereby relay metal. The body 200 is fixed to the distal end portion 5. Subsequently, the nozzle 10 is inserted into the space in the relay metal body 200 from the opening 250 side of the relay metal body 200, and the threaded portion 15 of the nozzle 10 and the in-pipe threaded portion 285 are screwed together. The nozzle 10 is attached to the inner space of the relay metal body 200.

  Next, the metal lattice structure 300 is attached to the relay metal body 200 attached to the distal end portion 5 of the metal tube 4 as described above. FIG. 11 is a view for explaining attachment of the metal lattice structure 300 to the relay metal body 200.

  FIG. 11A shows a state in which one end of the relay metal body 200 is inserted into the upper surface opening 330 of the metal lattice structure 300, and FIG. A state in which the entire relay metal body 200 is about to be inserted into the upper surface opening 330 while rotating the metal body 200 is shown.

  The opening 250 of the relay metal body 200 is provided with an arc portion 235. By including such an arc portion 235, the metal grid structure 300 can be easily attached to the relay metal body 200. It has become.

  Further, by providing the arcuate portion 235 in the relay metal body 200, there is an advantage that the area of the arc plate 230 can be increased. When the metal grid structure 300 is attached to the relay metal body 200, a certain amount of play is provided between the respective structures. For this reason, while the hood 100 is in use, the metal grid structure 300 is made of metal. The lattice structure 300 is easy to swing.

  In order to prevent this rocking, the arc plate 230 constituting the relay metal body 200 should have a large area. On the other hand, the entire relay metal body 200 is completely inserted from the upper surface opening 330 of the metal lattice structure 300. Need to be done. Both of these problems are solved by providing the arcuate portion 235 in the relay metal body 200 in the hood 100 according to the present invention.

  Now, after inserting the entire relay metal body 200 into the metal grid structure 300, the swash plate 220 of the relay metal body 200 is brought into contact with the front portion 350 and the back surface portion 360 of the metal grid structure 300, and Then, the arc plate 230 of the relay metal body 200 is brought into contact with the right side surface portion 370 and the left side surface portion 380 of the metal lattice structure 300.

  Furthermore, the relay metal body 200 and the metal lattice structure 300 are attracted by attracting the two swash plates 220 of the relay metal body 200 with the cylindrical magnet members 415 built in the two suction head portions 410 of the rocking prevention member 400. Strengthen the fixation with.

  A hood 100 according to an embodiment of the present invention configured as described above is shown in FIG. Moreover, FIG. 13 is a figure which shows the usage example of the food | hood 100 which concerns on embodiment of this invention. The asphalt emulsion pumped from the asphalt sprayer 1 and sprayed from the nozzle 10 is prevented from being scattered by the hood 100 mainly composed of the metal lattice structure 300. In addition, since the metal lattice structure 300 uses a metal lattice such as a plain weave mesh wire net 320, the metal lattice structure 300 can be reduced in weight compared to a hood using dense metal. As a result, the burden on the asphalt emulsion spraying work is reduced for the operator. The hood 100 according to the present invention is also excellent in durability because the main components such as the relay metal body 200, the metal lattice structure 300, and the rocking prevention member 400 are all made of metal. Furthermore, in configuring the hood 100 according to the present invention, general-purpose parts can also be used, and there is an advantage that it can be manufactured at low cost. Further, in the hood 100 according to the present invention, the fixing between the relay metal body 200 and the metal grid structure 300 is reinforced by the swing prevention member 400, and the metal grid structure 300 does not swing, and the asphalt Easy to spread emulsion.

  As described above, the hood 100 according to the present invention includes a plain metal mesh wire mesh (metal grid) in addition to the relay metal body 200 having the opening 250 through which the asphalt emulsion sprayed from the nozzle 10 passes, and the upper surface opening 330 and the lower surface opening 340. ) 320 and the metal grid structure 300 supported by the relay metal body 200 by applying a load to the relay metal body 200, the hood 100 according to the present invention has such a structure. Therefore, by efficiently capturing the asphalt emulsion by the metal lattice structure 300, it is possible to prevent the scattering of the asphalt emulsion, and it is not easily broken, the increase in weight is suppressed, and the burden on the operator is reduced. It becomes possible to reduce.

DESCRIPTION OF SYMBOLS 1 ... Asphalt sprayer 3 ... Hose 4 ... Metal pipe 5 ... Tip part 7 ... In-pipe screw part 10 ... Nozzle 13 ... Head part 15 ... Screw part 20 ... concave portion 30 ... opening 100 ... hood 200 ... relay metal body 205 ... base material 210 ... substrate 211 ... first surface 212 ... second surface 215- ··················································································································· Arc 250 · extravascular threaded portion 270 ... washer 280 ... hex socket 283 ... hexagonal barrel 285 ... pipe threaded portion 300 ... metal grid structure 310 ... skeleton 320 - ..Plain mesh mesh (metal lattice)
330 ... Upper surface opening 340 ... Lower surface opening 350 ... Front surface 360 ... Back surface 370 ... Right side surface 380 ... Left side surface 400 ... Swing prevention member 410 ... Adsorption head part 411 ... Head base part 413 ... Ring part 415 ... Columnar magnet member 420 ... Wire member 425 ... Loop part 427 ... Caulking part

Claims (4)

An asphalt sprayer including a hood that covers a periphery of a nozzle for spraying asphalt emulsion,
An externally threaded portion that is screwed into the metal tube of the asphalt sprayer, an internally threaded portion that is threadedly engaged with the nozzle, and an asphalt emulsion that is sprayed from the nozzle that is threadably engaged with the internally threaded portion passes. A relay metal body having an opening;
With metal grating is arranged in addition to the upper opening and the lower surface opening, said the metallic grid structure is supported on relay metal body by weight with respect to the relay metal body, Ri Tona,
An asphalt sprayer characterized in that an arcuate portion having an arcuate shape is provided in the opening . The asphalt sprayer according to claim 1, wherein the metal lattice is a mesh wire mesh. The asphalt sprayer according to claim 1, wherein the metal lattice is a punching metal. A rocking prevention member including a wire member provided with a loop portion and an adsorption head portion in which a cylindrical magnet member is built in an end portion;
The said rocking | fluctuation prevention member is attached to the said relay metal body by the said loop part being penetrated below the said external threading part of the said relay metal body, The said relay metal body is characterized by the above-mentioned. The asphalt sprayer of any one of Claims.

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