Vehicle-mounted type pavement material spraying device, and pavement material spraying vehicle equipped therewith

Abstract

To provide a pavement material spraying vehicle capable of promptly responding to a construction site having a construction area of medium scale or small scale, and a vehicle-mounted type pavement material spraying device capable of realizing the pavement material spraying vehicle.SOLUTION: A vehicle-mounted type pavement material spraying device is provided with: a base seat; support legs attached on the base seat; a moving body supported so as to allow parallel movement between a receiving position relatively above and forward with respect to the support legs and a developed position relatively below and rearward with respect to the support legs; and a spraying nozzle part provided with one or a plurality of spraying nozzles, wherein the spraying nozzle part is attached on the moving body. Also provided is a pavement material spraying device equipped with the same.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a vehicle-mounted paving material spreading device for use on a vehicle, and to a paving material spreading vehicle equipped with the same. [Background technology]

[0002] Paving materials such as asphalt emulsions, their decomposition accelerators, and solvent-based primers are generally spread onto the construction surface using a work vehicle called an asphalt distributor.

[0003] An asphalt distributor is typically an 8-ton class vehicle equipped with a tank and pump that hold about 2 tons of paving material such as asphalt emulsion, and a spraying device equipped with numerous spray nozzles lined up in a row at the rear of the vehicle.It has the ability to evenly spray large amounts of paving material over a wide area of ​​construction surface while traveling (for example, Patent Documents 1 and 2).

[0004] However, in recent years, especially in pavement repair work in urban areas, the area of ​​work per day is sometimes reduced in order to shorten traffic congestion caused by the work, and in such cases, the use of an asphalt distributor that is excessively large compared to the area of ​​work is often avoided. In addition, the operation of an asphalt distributor requires skill, and since there is a limit to the number of skilled workers, there is a limit to how quickly the system can respond to the medium- to small-scale work sites that occur every day.

[0005] Meanwhile, as a spraying machine specialized for small-area construction, a hand-pushed or towed type sprayer equipped with an asphalt emulsion tank and a small pump has been proposed (Patent Documents 3 and 4). However, these small sprayers are equipped with an emulsion tank containing asphalt emulsion, a pump, a motor, etc., mounted on a cart that is small enough to be pulled or pushed by a person, so there is a limit to the amount of asphalt emulsion that can be loaded, and conversely, there is a restriction that they can only be used on sites with an extremely small construction area. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 7-102518 [Patent Document 2] JP 2001-279609 A [Patent Document 3] Japanese Utility Model Application Publication No. 63-100506 [Patent Document 4] Utility Model Registration No. 3279609157017 Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention has been made to solve the above-mentioned problems, and its objective is to provide a paving material spreader vehicle that can quickly respond to construction sites with medium to small construction areas, and a vehicle-mounted paving material spreader device that makes it possible to realize such a paving material spreader vehicle. [Means for solving the problem]

[0008] As a result of extensive research to solve the above problems, the inventors came up with the idea that if there was a vehicle-mounted paving material spraying device that could be easily installed on a relatively small vehicle, by mounting it on a vehicle along with equipment such as a paving material tank, pump, and its power source, it would be possible to easily provide a spraying vehicle that could quickly respond to medium- to small-sized construction sites.

[0009] Based on this idea, and through repeated trial and error, the inventors have found that by constructing the spraying device so that it can be deployed behind the vehicle to spray paving material when spraying and can be stored compactly on the vehicle when not spraying, it is possible to obtain a vehicle-mounted paving material spraying device that can be mounted on a relatively small vehicle. Furthermore, the inventors have found that by mounting the paving material spraying device on a vehicle together with other necessary materials and equipment, it is possible to provide a paving material spraying vehicle that can quickly respond to work sites with medium to small construction areas.

[0010] That is, the present invention provides With a pedestal, A support leg attached to the base; a movable body supported so as to be movable in parallel between a stored position that is relatively upward and forward with respect to the support legs and a deployed position that is relatively downward and rearward with respect to the support legs; A spray nozzle assembly including a spray bar and one or more spray nozzles connected to the spray bar; The spray nozzle unit is attached to the movable body. The above problems are solved by providing a vehicle mounted paving material spreading device.

[0011] As described above, in the vehicle-mounted paving material spraying device according to the present invention, the spray nozzle unit is attached to a movable body that can move in parallel between a storage position that is relatively above and forward of the support leg and a deployed position that is relatively below and rearward of the support leg. Therefore, when the movable body moves from the storage position to the deployed position, and conversely, from the deployed position to the storage position, the spray nozzle unit also moves in parallel between the storage position that is relatively above and forward of the support leg and the deployed position that is relatively below and rearward of the support leg. Incidentally, a parallel movement means that each point of an object moves the same distance in the same direction.

[0012] In the relatively upward and forward stowed position, the spray nozzle assembly, together with its spray bar and nozzles, is raised above the base of the paving material sprayer, which occupies a small space and can be mounted on the bed of a relatively small vehicle, making it easy to transport.

[0013] On the other hand, in the deployed position, which is relatively lower and rearward, the spray nozzle unit, together with its spray bar and spray nozzles, is pulled down from the base to the rear of the device. In this state, the multiple spray nozzles of the spray nozzle unit face the treatment surface, making it possible to perform spraying work.

[0014] It should be noted that "forward" with respect to the paving material spreader or its base of the present invention means forward in the direction in which the paving material spreader of the present invention is advanced relative to the construction surface during construction, and "rearward" means the opposite direction. A vehicle equipped with the paving material spreader of the present invention spreads paving material using the mounted paving material spreader while traveling forward in the vehicle's normal traveling direction, so the "forward" and "rearward" of the paving material spreader coincide with the "forward" and "rearward" directions, respectively, of the normal traveling of the vehicle on which it is mounted.

[0015] Since the spray nozzle unit is usually a complex structure consisting of multiple spray nozzles, spray bars that supply liquid material to them, piping, on-off valves, frame materials, etc., it is important that the movement of the spray nozzle unit between the stored position and the deployed position is performed in parallel.

[0016] In other words, if we assume that the spray nozzle moves between the stored position and the deployed position by rotating 90 degrees around a horizontal axis instead of moving in parallel, the direction of gravity acting on the spray nozzle will change by 90 degrees between the stored position and the deployed position. This is a burden on the spray nozzle, which is a relatively complex structure, and it is inevitable that the cost and weight will increase in order to make the structure capable of withstanding it. In addition, if the direction of gravity changes as the spray nozzle moves between the stored position and the deployed position, the paving material remaining in the spray nozzle piping may flow back to the upstream side of the piping or cause clogging.

[0017] In contrast, when the spray nozzle unit, together with the multiple spray nozzles it has, moves parallel between the stored position and the deployed position, gravity always acts on the spray nozzle unit in the same direction, which has the advantage that the structural burden on the spray nozzle unit is small and it can be made light enough to be mounted on a relatively small vehicle. In addition, there is no risk of backflow of paving material or clogging due to a change in the direction of gravity.

[0018] In a preferred embodiment, the paving material spraying device of the present invention further has a base, and the base is supported on the base directly or via another member so as to be slidable in the front-rear and / or left-right directions relative to the base. Since the above-mentioned support legs, moving body, and spray nozzle unit are attached to the base, the fact that the base is slidable in the front-rear and / or left-right directions relative to the base means that the entire paving material spraying device including the base is slidable in the front-rear or left-right directions or front-rear and left-right directions relative to the base.

[0019] In this regard, the "front-rear direction" refers to the previously mentioned "front" and "rear" directions, and means the front-rear direction along the direction in which the paving material spreading device of the present invention advances relative to the construction surface during construction. Also, the "left-right direction" refers to the horizontal left-right direction when the paving material spreading device of the present invention is facing forward.

[0020] In the case where the base of the paving material spraying device according to the present invention is supported on the base so as to be slidable in the front-rear direction, in a vehicle equipped with the paving material spraying device according to the present invention, when spraying paving material, the base is slid backward relative to the base and then the spray nozzle part is translated to the deployed position, so that the spray nozzle part can be reliably moved to a position facing the construction surface outside the vehicle. When not spraying paving material, the spray nozzle part is translated to the stored position and then the base is slid forward relative to the base, so that the spray nozzle part can be reliably positioned on the vehicle bed, and the center of gravity of the vehicle is prevented from shifting backward, resulting in the advantage that the loaded vehicle can be driven with a well-balanced load distribution.

[0021] In addition, when the base of the paving material spreading device of the present invention is supported so that it can slide left and right relative to the base, the paving material spreading device can be slid left or right together with its base during spreading operations, which has the advantage of being able to avoid spreading paving material to specific areas on the construction surface without changing the course of the mounted vehicle or causing it to meander.

[0022] Incidentally, when the base of the paving material spreading device of the present invention is supported so that it can slide in both the forward / backward and left / right directions relative to the base, both the advantages obtained when it is able to slide in the forward / backward direction as mentioned above and the advantages obtained when it is able to slide in the left / right direction can be obtained.

[0023] The base may be directly supported by the base so as to be slidable in the front-rear and / or left-right directions relative to the base, or may be supported via another member supported by the base so as to be slidable in the front-rear and / or left-right directions. There are no particular limitations on the mechanism by which the base or other member slidably supports the base. Any mechanism may be used as long as the base can slide in the front-rear and / or left-right directions relative to the base. There are also no limitations on the form of support, and the base or other member may support the base in any form, such as contact, connection, engagement, coupling, or fitting. The same applies to the relationship between the base and the other member.

[0024] The mechanism by which the support leg supports the movable body so as to allow translational movement may be any mechanism, but in a preferred embodiment, the mechanism is a parallel link mechanism in which the support leg and the movable body are connected by two parallel connecting arms. The movable body moves parallel to the support leg by applying a force to one of the connecting arms and rotating the connecting point as an axis. In a preferred embodiment, the paving material spraying device according to the present invention is provided with a rotary drive mechanism that rotates at least one of the two connecting arms about the connecting point with the support leg as an axis.

[0025] In another preferred embodiment, at least one of the two connecting arms connecting the support leg and the movable body is provided with a length adjustment means. If at least one of the two connecting arms is provided with a length adjustment means, it is convenient because it can be used when the lengths of the two connecting arms are not uniform, or when it is desired to intentionally make one length different from the other to change the angle of the movable body relative to the support leg, particularly in the deployed position.

[0026] In another preferred embodiment, the spray nozzle section of the paving material spraying device of the present invention has a plurality of spray nozzles arranged in a row in the left-right direction to form a spray nozzle row. Incidentally, the left-right direction in relation to the vehicle-mounted paving material spraying device of the present invention means the horizontal left-right direction when the vehicle-mounted paving material spraying device of the present invention is facing forward, as described above.

[0027] In yet another preferred embodiment, the paving material spraying device according to the present invention has a second spray nozzle section equipped with a spray bar and one or more spray nozzles. The second spray nozzle section is attached to the movable body and / or the spray nozzle section in the same manner as the spray nozzle section is attached to the movable body. It is preferable that the second spray nozzle section, like the spray nozzle section, has a plurality of spray nozzles, and the plurality of spray nozzles are arranged in a row in the left-right direction to form a spray nozzle row. Since the second spray nozzle section is attached to the movable body and / or the spray nozzle section, the second spray nozzle section is basically located rearward of the spray nozzle section.

[0028] In a preferred embodiment, the spray nozzle row of the spray nozzle unit and the spray nozzle row of the second spray nozzle unit are parallel to each other. The spray nozzle unit and the second spray nozzle unit may spray the same paving material, or may spray different paving materials, for example, the spray nozzle unit sprays an asphalt emulsion and the second spray nozzle unit sprays a decomposition accelerator.

[0029] The present invention also solves the above-mentioned problems by providing a paving material spreader vehicle which is mounted with the vehicle-mounted paving material spreader of the present invention as described above, with its forward direction aligned with the front of the vehicle's normal driving direction, and which is further equipped with at least one paving material tank, a pipeline connecting the tank to the spreader nozzle section of the mounted paving material spreader, and a paving material delivery device which delivers paving material from the tank to the spreader nozzle section via the pipeline.

[0030] As described above, the vehicle-mounted paving material spraying device of the present invention has a movable body and a spray nozzle unit attached to the movable body that move parallel between a stored position and an deployed position, so that the spray nozzle provided in the spray nozzle unit faces the work surface when spraying and can be stored in a compact state when not spraying, so that it can be mounted and installed with plenty of room in the bed of a relatively small vehicle such as a light truck. For this reason, a vehicle equipped with the paving material spraying device of the present invention can also be equipped with a tank of the paving material to be sprayed and a delivery device such as a pump or pressure-feeding device that delivers the paving material contained in the tank to the spray nozzle unit.

[0031] Furthermore, in a preferred embodiment, the paving material spreader of the present invention is equipped with a battery, or a battery and an electric air compressor, or a high-pressure gas cylinder, or two or more of them, and is equipped with wiring and / or piping for supplying electricity, compressed air, or high-pressure gas supplied from the battery, the air compressor, or the high-pressure gas cylinder to various mounted devices as an energy source. In this case, the paving material spreader of the present invention does not emit CO2 at least in relation to the operation of the mounted paving material spreader, and it can be said that it is a spreader that greatly contributes to the realization of a carbon-free society.

[0032] If the paving material to be sprayed needs to be kept at a certain temperature or higher, it will be necessary to install an insulation means such as a heater in the tank of the paving material carried on board. However, for such insulation means, it is possible to keep the paving material warm without emitting CO2 by using electricity supplied from the onboard battery as the energy source.

[0033] In another preferred embodiment, the paving material spreader vehicle of the present invention is equipped with a vacuum double-walled tank as a tank for storing the paving material. Since the vacuum double-walled tank has excellent heat retention, for example, if the tank is filled with paving material that has been heated to a temperature higher than a predetermined temperature in a factory and dispatched, the paving material in the tank can be kept at a temperature higher than the predetermined temperature until the paving material spreader vehicle of the present invention arrives at the construction site and the spreading work is completed. This eliminates the need to heat the paving material tank with a heater or the like, and reduces the power consumption of the on-board battery.

[0034] In another preferred embodiment, the tank for the paving material is provided with an agitator for agitating the contents of the tank. By appropriately operating this agitator, even if the paving material to be sprayed is a material that is prone to settling or uneven concentration, the paving material can be sprayed while maintaining a uniform state in the tank.

[0035] In another preferred embodiment, the paving material spraying vehicle of the present invention has a circulation pipe formed by including a pipe connecting a tank of paving material and the spray nozzle unit, or a spray bar equipped with the spray nozzle unit, as part of the pipe, and a circulating cleaning pipe through which a cleaning agent circulates during cleaning. In a further preferred embodiment, the circulating cleaning pipe is a circulation cleaning pipe formed by further including a tank of paving material as part of the pipe. In another preferred embodiment, the circulating cleaning pipe is a circulation cleaning pipe formed by further including a pump device as part of the pipe.

[0036] When the paving material spreader vehicle of the present invention has such a circulating cleaning pipeline, the inside of the pipeline that comes into contact with the paving material can be circulated and cleaned using a cleaning agent, making it possible to prevent the pipeline from becoming dirty, clogged, or narrowed.

[0037] In yet another preferred embodiment, the paving material spraying vehicle of the present invention is preferably an electric vehicle, a fuel cell vehicle, a hydrogen engine vehicle, or a hybrid vehicle. When the vehicle on which the paving material spraying device of the present invention is mounted is an electric vehicle, a fuel cell vehicle, a hydrogen engine vehicle, or a hybrid vehicle, not only the operation of the mounted paving material spraying device but also the running of the vehicle on which the paving material spraying device is mounted generates little or no direct CO2, which can greatly contribute to a carbon-neutral decarbonized society. Effect of the Invention

[0038] According to the vehicle-mounted paving material spraying device of the present invention, the spray nozzle moves parallel to the moving body between the stored position and the deployed position, so that when spraying, the spray nozzle can be moved to the deployed position to fully face the construction surface, and when not spraying, the spray nozzle can be moved to the stored position to store it compactly. Therefore, it has the advantage that it can be mounted on a relatively small vehicle as long as there is a certain amount of space. In addition, the paving material spraying vehicle of the present invention has the advantage that it can flexibly respond to medium- to small-scale construction sites by mounting the paving material spraying device of the present invention and other necessary materials and equipment. [Brief description of the drawings]

[0039] [Figure 1] FIG. 2 is a right side view showing an example of a vehicle-mounted paving material spraying device according to the present invention, with the spray nozzle unit in the deployed position. [Diagram 2] FIG. 2 is a left side view showing an example of a vehicle-mounted paving material spraying device according to the present invention, with the spray nozzle unit in the deployed position. [Diagram 3] FIG. 2 is a partial enlarged view showing only the support leg, the movable body, and the connecting arm connecting them. [Figure 4] 11 is a partial enlarged view showing a state in which the movable body moves in parallel from the deployed position to the stored position. FIG. [Diagram 5]13 is a partial enlarged view showing a state in which the movable body has moved in parallel to a storage position. FIG. [Figure 6] FIG. 2 is a plan view showing an example of a vehicle-mounted paving material spraying device according to the present invention, with the spray nozzle portion in the deployed position. [Figure 7] FIG. 2 is a rear view showing an example of a vehicle-mounted paving material spraying device according to the present invention, with the spray nozzle unit in the deployed position. [Figure 8] FIG. 2 is a plan view of an example of a vehicle-mounted paving material spraying device according to the present invention, showing the spray bar folded up. [Figure 9] FIG. 2 is a right side view of an example of a vehicle-mounted paving material spraying device according to the present invention, showing the spray nozzle portion in an extended position and the spray bar folded up. [Figure 10] 11 is a right side view showing a state in which the movable body moves in parallel from the deployed position to the stored position. FIG. [Figure 11] 13 is a right side view showing a state in which the movable body has moved in parallel to the storage position. FIG. [Figure 12] 13 is a right side view showing a state in which the pedestal has been slid forward most relative to the base. FIG. [Figure 13] FIG. 2 is a right side view showing an example of a paving material spreader vehicle according to the present invention. [Figure 14] FIG. 1 is a left side view showing an example of a paving material spreader vehicle according to the present invention. [Figure 15] FIG. 2 is a rear view showing an example of a paving material spreader according to the present invention. [Figure 16] FIG. 1 is a conceptual diagram showing an example of implementation of a paving material spreading vehicle according to the present invention. [Figure 17] FIG. 11 is a conceptual diagram showing another example of the implementation of the paving material spreader according to the present invention. [Figure 18] FIG. 11 is a conceptual diagram showing yet another example of the implementation of the paving material spreader of the present invention. [Figure 19] 1 is a conceptual diagram showing an example of a circulating cleaning pipeline provided in a paving material spreading vehicle according to the present invention. [Figure 20] FIG. 13 is a conceptual diagram showing an example of a pipeline configuration during cleaning. [Figure 21] It is a conceptual diagram showing another example of the pipeline configuration during cleaning. [Figure 22] It is a conceptual diagram showing another example of the pipeline configuration during cleaning. [Figure 23] It is a conceptual diagram showing another example of the pipeline configuration during cleaning. [Figure 24] It is a conceptual diagram showing another example of the circulating cleaning pipeline provided in the paving material spraying vehicle according to the present invention. [Diagram 25] It is a conceptual diagram showing an example of the pipeline configuration during cleaning. [Figure 26] It is a conceptual diagram showing another example of the pipeline configuration during cleaning. [Figure 27] It is a conceptual diagram showing another example of the pipeline configuration during cleaning. [Figure 28] It is a conceptual diagram showing another example of the pipeline configuration during cleaning. [Figure 29] It is a right side view showing an example of the operation of the paving material spraying vehicle according to the present invention. [Diagram 30] It is a right side view showing an example of the operation of the paving material spraying vehicle according to the present invention. [Diagram 31] It is a plan view showing another example of the vehicle-mounted paving material spraying device according to the present invention. [Diagram 32] It is a plan view showing a state where the pedestal is slid to the left with respect to the base. [Diagram 33] It is a plan view showing a state where the pedestal is slid to the right with respect to the base.

Embodiments for Carrying Out the Invention

[0040] Hereinafter, the present invention will be described with reference to the drawings, but it goes without saying that the present invention is not limited to what is shown in the drawings.

[0041] A. Vehicle-mounted paving material spraying device <A-1. Right side view and left side view> FIG. 1 is a right side view showing an example of a vehicle-mounted paving material spraying device according to the present invention, and FIG. 2 is a left side view, both of which show the spray nozzle unit in the deployed position.

[0042] In Fig. 1 and Fig. 2, 1 is a vehicle-mounted paving material spraying device. 2 is a base of the paving material spraying device 1, 3 is a pedestal, and the pedestal 3 is supported by the base 2 so as to be slidable in the front-rear direction relative to the base 2. Incidentally, "forward" refers to the forward direction of the direction in which the vehicle-mounted paving material spraying device 1 according to the present invention advances during construction, and in Fig. 1 and Fig. 2, it means the direction in which the tip of the white arrow points. Also, "rear" means the opposite direction to forward. Therefore, the pedestal 3 being slidable in the front-rear direction relative to the base 2 means that the pedestal 3 is slidable in the front-rear direction relative to the base 2 in the direction indicated by the white arrow in the figure or in the opposite direction. Incidentally, Fig. 1 and Fig. 2 show a state in which the pedestal 3 has slid to the rearmost position relative to the base 2.

[0043] Reference numeral 4 denotes a support leg fixed to the base 3, 5 a movable body, 6 an upper connecting arm, and 7 a lower connecting arm. The support leg 4 and the movable body 5 are rotatably connected to the upper connecting arm 6 by respective upper pins 4a and 5a, and rotatably connected to the lower connecting arm 7 by respective lower pins 4b and 5b. The support leg 4 and the movable body 5 are provided on both sides of the operating body 10 described below, sandwiching the operating body 10 therebetween.

[0044] Reference numeral 81 denotes the spray nozzle section. The spray nozzle section 81 is attached to the movable body 5 by a connecting member 91. The connecting member 91 is made of a rigid member, and the spray nozzle section 81 is fixedly attached to the movable body 5 so that its positional relationship does not change. By being fixedly attached to the movable body 5 by the connecting member 91, the movable body 5 and the spray nozzle section 81 move together. In a preferred embodiment, the connecting member 91 is a member having a structure that allows the horizontal length to be adjusted, and the distance between the movable body 5 and the spray nozzle section 81 is adjustable.

[0045] Reference numeral 82 denotes a second spray nozzle part. The second spray nozzle part 82 is connected and fixed to the spray nozzle part 81 by a second connecting member 92. The connecting member 92 is made of a rigid member, and fixedly attaches the spray nozzle part 82 to the spray nozzle part 81 so that the positional relationship between the spray nozzle part 82 and the spray nozzle part 81 does not change. By being fixedly attached to the spray nozzle part 81 by the connecting member 92, the spray nozzle part 81 and the second spray nozzle part 82 move together. Instead of being fixedly attached to the spray nozzle part 81, the second spray nozzle part 82 may be fixedly attached directly to the moving body 5 by the second connecting member 92.

[0046] In a preferred embodiment, the connecting member 92 is a member having a structure that allows its horizontal length to be adjusted, and the distance between the spray nozzle portion 81 or the movable body 5 and the second spray nozzle portion 82 is adjustable.

[0047] n is a spray nozzle. In a preferred embodiment, the spray nozzle section 81 and the second spray nozzle section 82 each include a plurality of spray nozzles n. The plurality of spray nozzles n are aligned in height and arranged in a row in the left-right direction to form a spray nozzle row. v is an on-off valve attached to the upstream side of the piping of the spray nozzle n, B1 is a spray bar of the spray nozzle section 81, and B2 is a spray bar of the second spray nozzle section 82. In a preferred embodiment, the spray nozzle row consisting of a plurality of spray nozzles provided in the spray nozzle section 81 and the spray nozzle row consisting of a plurality of spray nozzles provided in the spray nozzle section 82 are parallel to each other. In addition, the second spray nozzle section 82 is located rearward of the spray nozzle section 81.

[0048] In a preferred embodiment, as shown in FIGS. 1 and 2, when the moving body 5 is in the deployed position and the spraying nozzle section 81 and the second spraying nozzle section 82 attached to the moving body 5 are also in the deployed position, the lower end line Ln of the spraying nozzle row provided in each spraying nozzle section is located below the lower surface L0 of the base 2. When the base 2 does not exist, the lower surface L0 is the lower surface of the pedestal 3, and even in that case, the lower end line Ln of the spraying nozzle row is located below the lower surface L0. Since the position of the lower end line Ln of the spraying nozzle row in the deployed position is set in this way, the paving material spraying device according to the present invention can bring the lower end of the spraying nozzle row close to the construction surface by an appropriate distance when mounted on a vehicle.

[0049] 10 is an actuating body. The rear end of the actuating body 10 is attached to the connecting body 11, and the upper surface of the connecting body 11 is attached to the lower surface of the lower connecting arm 7. The front end of the actuating body 10 is connected to the cylinder rod of a cylinder not shown in the figure. Although only one actuating body 10 is drawn in FIGS. 1 and 2, as shown in FIGS. 6 and 7 described later, the actuating body 10 is composed of two identical-shaped and same-sized actuating body plates 101 and 102 arranged opposite to each other with a gap therebetween.

[0050] The actuating body 10, the connecting body 11, and the cylinder constitute a rotational drive mechanism that rotates the lower connecting arm 7 about the lower pin 4b which is the connection point with the support leg 4. The rotational drive mechanism will be described later. 12 is a housing frame that supports the upper end of the cylinder. 131 and 132 are pipe supports attached to the upper end of the housing frame 12, and are for the spraying nozzle section 81 and the second spraying nozzle section 82, respectively. Note that the pipe supports 131 and 132 may be simply members having a hollow portion for passing a pipe in the front-rear direction or a temporary locking member, or may have a connector function for connecting pipes to each other.

[0051] <A-2. Parallel movement mechanism> 3 is a partial enlarged view showing only the support leg 4 and the movable body 5 in FIG. 1, and the upper connecting arm 6 and the lower connecting arm 7 which connect them, (a) being a partially enlarged right side view, and (b) being a partially enlarged rear view. As shown in FIG. 3(a) and (b), the support leg 4 is composed of two support leg plates 41 and 42 which are arranged opposite to each other with a gap therebetween, have the same shape and size, and have the upper pins 4a and the lower pins 4b in the same positions. Similarly, the movable body 5 is composed of two movable body plates 51 and 52 which are arranged opposite to each other with a gap therebetween, have the same shape and size, and have the upper pins 5a and the lower pins 5b in the same positions.

[0052] One end of the upper connecting arm 6 and the lower connecting arm 7 is supported by an upper pin 4a and a lower pin 4b between the opposing surfaces of the two support leg plates 41 and 42 so as to be rotatable around each pin as an axis. Similarly, the other end of the upper connecting arm 6 and the lower connecting arm 7 is supported by an upper pin 5a and a lower pin 5b between the opposing surfaces of the two movable body plates 51 and 52 so as to be rotatable around each pin as an axis.

[0053] The length of the straight line 4z connecting the upper pin 4a and the lower pin 4b on the support leg plates 41 and 42 is set to be equal to the length of the straight line 5z connecting the upper pin 5a and the lower pin 5b on the movable body plates 51 and 52. Similarly, the length of the straight line 6z connecting the upper pin 4a and the upper pin 5a on the upper connecting arm 6 and the length of the straight line 7z connecting the lower pin 4b and the lower pin 5b on the lower connecting arm 7 are set to be equal.

[0054] As a result, the straight line 4z connecting the upper pins 4a and the lower pins 4b of the support leg plates 41 and 42 is parallel to the straight line 5z connecting the upper pins 5a and the lower pins 5b of the movable body plates 51 and 52, and the straight line 6z connecting the upper pins 4a and 5a of the upper connecting arm 6 is parallel to the straight line 7z connecting the lower pins 4b and 5b of the lower connecting arm 7. In other words, the support leg plates 41 and 42, the movable body plates 51 and 52, the upper connecting arm 6, and the lower connecting arm 7 form a parallel link with the upper pin 4a and the lower pin 4b of the support leg plates 41 and 42 as a fixed joint, the upper pin 5a and the lower pin 5b of the movable body plates 51 and 52 as an intermediate joint, one of the upper connecting arm 6 or the lower connecting arm 7 as a driving joint, and the other as a driven joint, thereby constituting a parallel movement mechanism that translates the movable body 5 composed of the movable body plates 51 and 52.

[0055] As shown in Fig. 3(a), the upper pin 4a of the support leg plates 41 and 42 is preferably located above and in front of the lower pin 4b. Similarly, the upper pin 5a of the movable body plates 51 and 52 is preferably located above and in front of the lower pin 5b, as shown in Fig. 3(a). When the upper pins 4a, 5a and the lower pins 4b, 5b of the support leg plates 41 and 42 and the movable body plates 51 and 52 are in such a positional relationship, it is advantageous that both the upper connecting arm 6 and the lower connecting arm 7 can be moved to a horizontal or nearly horizontal angle in the deployed position, and to a vertical or nearly vertical angle in the stored position.

[0056] In this example, both the support leg 4 and the movable body 5 are composed of two support leg plates 41 and 42, or movable body plates 51 and 52, respectively, but either one or both of the support leg 4 and the movable body 5 may be composed of a single support leg plate or movable body plate.

[0057] 3(a), 6a and 6b are threaded portions constituting a part of the upper connecting arm 6, and 6c is a nut portion that screws into the ends of the threaded portions 6a and 6b. Since the threads cut into the threaded portion 6a and the threaded portion 6b are in a reverse thread relationship, the length of engagement between the nut portion 6c and the threaded portions 6a and 6b can be changed by rotating the nut portion 6c, thereby adjusting the length 6z of the upper connecting arm 6 between the upper pin 4a and the upper pin 5a.

[0058] Thus, in a preferred embodiment, the upper connecting arm 6 is provided with a length adjustment mechanism for adjusting its own length. Therefore, for example, if the length of the straight line 6z is not the same as the length of the straight line 7z, the length of the upper connecting arm 6 can be changed by the length adjustment mechanism provided in the upper connecting arm 6 described above, so that the two lengths are made the same.

[0059] Furthermore, when the length of the upper connecting arm 6 is made longer than the length of the lower connecting arm 7, the movable body 5 is tilted slightly backward (clockwise in the figure) around the lower pin 5b, so that the spray nozzle section 81 and the second spray nozzle section 82 attached to the movable body 5 are also tilted slightly backward. Conversely, when the length of the upper connecting arm 6 is made shorter than the length of the lower connecting arm 7 by the length adjustment mechanism provided on the upper connecting arm 6, the movable body 5 is tilted slightly forward and downward (counterclockwise in the figure) around the lower pin 5b, so that the spray nozzle section 81 and the second spray nozzle section 82 attached to the movable body 5 are also tilted slightly forward and downward.

[0060] Thus, in a preferred embodiment, the inclination of the spray nozzle part 81 and the second spray nozzle part 82 in the front-rear direction can be appropriately adjusted by adjusting the length of the upper connecting arm 6 by the length adjustment mechanism provided on the upper connecting arm 6. As a result, for example, when spraying asphalt emulsion from the spray nozzle part 81 and spraying its decomposition accelerator from the second spray nozzle part 82, the time until the asphalt emulsion and the decomposition accelerator come into contact with each other can be changed, thereby obtaining the advantage that the decomposition time of the asphalt emulsion can be lengthened or shortened and adjusted. In addition, when the paving material spraying device 1 is mounted on a vehicle and used, for example, when the front wheels of the vehicle run up a step, the length of the upper connecting arm 6 can be shortened and the spray nozzle part 81 and the second spray nozzle part 82 can be tilted slightly downward in front, that is, upward in rear, to avoid the second spray nozzle part 82 coming into contact with the road surface. When the moving body 5 is moved in parallel, it is of course necessary to make the length 6z of the upper connecting arm 6 and the length 7z of the lower connecting arm 7 equal. The length adjustment mechanism may be provided on the lower connecting arm 7, or on both the upper connecting arm 6 and the lower connecting arm 7.

[0061] Fig. 4 shows a state in which the lower connecting arm 7 has been rotated upward by a certain angle around the lower pin 4b of the support leg plates 41 and 42 from the state shown in Fig. 3. As in Fig. 3, (a) is a partially enlarged right side view, and (b) is a partially enlarged rear view.

[0062] As described above, the support leg plates 41 and 42, the movable body plates 51 and 52, the upper connecting arm 6, and the lower connecting arm 7 form a parallel link to constitute a parallel movement mechanism. When the lower connecting arm 7 is rotated upward around the lower pin 4b, the movable body plates 51 and 52 constituting the movable body 5 move in parallel from the position 5' shown by the dashed line in the figure to the position shown by the solid line. In other words, the lengths of α1, β1, γ1, and δ1, which represent the movement distances of each representative point of the movable body plate 51, are all the same, and the angles thereof with respect to the horizontal are also the same. In addition, the straight line 4z connecting the upper pin 4a and the lower pin 4b of the support leg plates 41 and 42 and the straight line 5z connecting the upper pin 5a and the lower pin 5b of the movable body plates 51 and 52 remain parallel to each other.

[0063] FIG. 5 shows a state in which the lower connecting arm 7 is rotated upward by a certain angle around the lower pin 4b of the support leg plates 41 and 42 from the state shown in FIG. 4, and the moving body 5 is translated from the position 5'' shown by the dashed line in the figure to the storage position shown by the solid line. As in FIG. 3, (a) is a partially enlarged right side view, and (b) is a partially enlarged rear view. The lengths of α2, β2, γ2, and δ2, which represent the movement distances of representative points of the moving body plates 51 and 52 constituting the moving body 5 from the state shown in FIG. 4, are all the same, and the angles thereof with respect to the horizontal are also the same. The straight line 4z connecting the upper pin 4a and the lower pin 4b of the support leg plates 41 and 42 and the straight line 5z connecting the upper pin 5a and the lower pin 5b of the moving body plates 51 and 52 remain parallel to each other.

[0064] The same is true when the lower connecting arm 7 is rotated downward around the lower pin 4b as an axis to move the movable body 5 from the stored position shown in Figure 5 to the deployed position shown in Figure 3; as the lower connecting arm 7 rotates, the movable body 5 moves in parallel, and the parallel relationship between the straight line 4z connecting the upper pin 4a and the lower pin 4b of the support leg 4 and the straight line 5z connecting the upper pin 5a and the lower pin 5b of the movable body 5 is maintained.

[0065] In Figure 5, w 6t and w 7tare the angles of the upper connecting arm 6 and the lower connecting arm 7 from the horizontal plane S at the storage position, respectively. When the support foot plates 41 and 42, the moving body plates 51 and 52, the upper connecting arm 6, and the lower connecting arm 7 form a parallel link, w 6t = w 7t is satisfied. In a preferred embodiment, w 6t and w 7t are 75 degrees or more and less than 90 degrees, and in a more preferred embodiment, w 6t and w 7t are 80 degrees or more and 88 degrees or less. When w 6t and w 7t become 90 degrees or more, the support of the spraying nozzle part connected and fixed to the moving body 5 becomes unstable, which is not preferable. Also, when w 6t and w 7t become less than 80 degrees, the compactness at the storage position is not so remarkable, which is not preferable.

[0066] <A-3. Plan view and rear view> FIG. 6 is a plan view of the paving material spraying device 1 shown in FIGS. 1 and 2, and FIG. 7 is a rear view. In FIGS. 6 and 7, the moving body 5 and the spraying nozzle part 81 and the second spraying nozzle part 82 are in the deployed position as in FIGS. 1 and 2.

[0067] As shown in FIG. 6, in the paving material spraying device 1 of this example, two sets of parallel movement mechanisms formed by the support legs 4, the moving body 5, the upper connecting arm 6, and the lower connecting arm 7 are provided, and they are arranged on both sides of the center line C in the left-right direction of the pedestal 3 at positions where the distance C1 from the center line C is equal.

[0068] The actuator 10 also comprises a pair of actuator plates 101, 102 of the same shape and size, which are arranged opposite each other with a gap between them. A connector 11 is attached to the rear ends of the actuator plates 101, 102. As described above, the upper surfaces of the connector 11 near the left and right ends are attached to the lower surface of the lower connecting arm 7. In the paving material spreading device 1 of this example, the connector 11 is a plate-shaped member, but the connector 11 does not necessarily have to be plate-shaped. The connector 11 may be, for example, one or more rod-shaped members arranged in the left-right direction.

[0069] 7, the front ends of the two opposing actuator plates 101, 102 are connected by a front connecting rod 10b, and a piston rod Sr of a cylinder S is connected to the front connecting rod 10b. An upper end St of the cylinder S is supported so as to be swingable in the front-rear direction by two support plates 121, 121 protruding from the upper lower surface of the housing frame 12. A hydraulic cylinder is preferably used as the cylinder S, but an air cylinder or an electric cylinder may also be used.

[0070] An upper frame 151 of the spray nozzle unit 81 is attached via a connecting member 91 to the vicinity of the rear end of each of the two movable body plates 51, 52 constituting the movable body 5. Since there are two movable bodies 5 constituted by two movable body plates 51, 52, two connecting members 91 are also provided to connect the movable bodies 5, 5 to the upper frame 151 of the spray nozzle unit 81.

[0071] Support frames 141, 141 are connected to both ends of the upper frame 151. The spray bar B1 of the spray nozzle unit 81 is attached to the lower ends of the support frames 141, 141. Reference numeral 161 denotes a paving material supply port of the spray bar B1, which is provided at an appropriate position on the spray bar B1. Reference numeral 171 denotes a rotatable pipe joint, and the portion of the spray bar B1 on the tip side beyond the pipe joint 171 can rotate around a vertical axis with respect to the central portion and be folded.

[0072] Reference numerals 92, 92 denote connecting members for fixedly mounting the support frames 142, 142 of the second spray nozzle section 82 to the support frames 141, 141 of the spray nozzle section 81. Reference numeral 152 denotes an upper frame for connecting the support frames 142 and 142. The spray bar B2 of the second spray nozzle section 82 is mounted to the lower ends of the support frames 142, 142. Reference numeral 162 denotes a paving material supply port of the spray bar B2, which is provided at an appropriate position of the spray bar B2. Reference numeral 172 denotes a rotatable pipe joint, and the portion of the spray bar B2 on the tip side beyond the pipe joint 172 can be rotated around a vertical axis relative to the central portion and folded.

[0073] n is a spray nozzle, Pn is a nozzle pipe connecting each of the spray bars B1 and B2 to each spray nozzle n, and v is an on-off valve provided in the nozzle pipe Pn. The on-off valve v may be a solenoid valve that can be opened and closed by remote control, or may be a valve that can be opened and closed manually. As shown in the figure, a plurality of spray nozzles n are attached to each of the spray bars B1 and B2 via the nozzle pipe Pn. Also, as shown in the figure, the height of the tip side portion of the spray bars B1 and B2 from the pipe joint 171 or 172 is higher than the central portion. Therefore, the length of the nozzle pipe Pn connecting the spray nozzle n and the spray bars B1 and B2 is longer at the tip side portion from the pipe joint 171 or 172. As a result, the height of the spray nozzle n is uniform throughout the spray bar B1 or B2, and in the spray nozzle section 81 and the second spray nozzle section 82, the plurality of spray nozzles n form two parallel spray nozzle rows aligned in the left-right direction.

[0074] In a preferred embodiment, the support frames 141, 141 of the spray nozzle unit 81 are provided with a mechanism for adjusting the vertical length. This provides the advantage that the height of the spray nozzle n from the application surface can be appropriately adjusted in the deployed position. The same applies to the support frames 142, 142 of the second spray nozzle unit 82.

[0075] In another suitable aspect, the second spraying nozzle section 82 is fixedly attached to the spraying nozzle section 81 by connecting its upper frame 152 to the upper frame 151 of the spraying nozzle section 81 via connecting members 92, 92. Note that the second spraying nozzle section 82 may be directly attached to the moving bodies 5, 5 via its upper frame 152 and / or the support frames 142, 142 without passing through the spraying nozzle section 81.

[0076] <A-4. Movement operation between the deployment position and the storage position> In the vehicle-mounted paving material spraying device 1 described above, the procedure for moving the moving bodies 5, and the spraying nozzle section 81 and the second spraying nozzle section 82 from the deployment position shown in FIG. 1 etc. to the storage position is as follows.

[0077] That is, first, as shown in the plan view of FIG. 8, the tip-side portions of the spray bars B1, B2 of the spraying nozzle section 81 and the second spraying nozzle section 82 are rotated in the direction of the arrow in the figure about the vertical axis at the positions of the pipe joints 171 or 172 and folded.

[0078] FIG. 9 is a right side view of a state where the tip-side portions of the spray bars B1, B2 are rotated about the vertical axis at the positions of the pipe joints 171 or 172 and folded. For convenience, the housing frame 12 is cut at the upper end portion and partially cut away and shown.

[0079] The two opposing actuator plates 101, 102 constituting the actuator 10 are connected by a front connecting rod 10b in the vicinity of their front end portions, and the piston rod Sr of the cylinder S is connected to this front connecting rod 10b as seen in FIG. 9. The upper end St of the cylinder S is attached to two support plates 121, 121 protruding from the upper lower surface of the housing frame 12 by a penetrating connecting pin Sp. Thereby, the upward movement of the cylinder S is blocked, but it can swing in the front-rear direction about the horizontal axis of the connecting pin Sp.

[0080] In this state, the movable body 5 and the spray nozzle section 81 and second spray nozzle section 82 connected and fixed to the movable body 5 are still in the deployed position. The bottom end line Ln of the spray nozzle row formed by the multiple spray nozzles n equipped in each spray nozzle section is located below the bottom surface L0 of the base 2. In the following explanation, for convenience, they will be simply referred to as the "support leg 4" and the "movable body 5", but as mentioned above, each is composed of two support leg plates 41, 42, or two movable body plates 51, 52. The same is true for the actuator 10.

[0081] When the spray bars B1, B2 have been folded up, an electric pump (not shown) is operated to supply hydraulic oil to the cylinder S, and the piston rod Sr is pushed downward. Fig. 10 shows a state in which the piston rod Sr of the cylinder S is pushed halfway downward, and accordingly the actuator 10 rotates in the direction of the arrow in the figure together with the connected connector 11 and lower connecting arm 7 about the lower pin 4b of the support leg 4. The actuator 10, connector 11, and cylinder S constitute a rotation drive mechanism that rotates the lower connecting arm 7 about the lower pin 4b, which is the connection point with the support leg 4.

[0082] As the lower connecting arm 7 rotates, the movable body 5 begins to move parallel to the upward and forward direction, and the spray nozzle section 81 and the second spray nozzle section 82, which are connected and fixed to the movable body 5, also move parallel to the positions shown in Figure 10.

[0083] 11 shows a state in which the piston rod Sr of the cylinder S is pushed further downward, and accordingly, the actuating body 10 further rotates about the lower pin 4b together with the connecting body 11 and the lower connecting arm 7, and the movable body 5 moves in parallel to the storage position. As the movable body 5 moves in parallel to the storage position, the spray nozzle part 81 and the second spray nozzle part 82, which are connected and fixed to the movable body 5, also move in parallel to the storage position.

[0084] When the movable body 5, as well as the spray nozzle section 81 and the second spray nozzle section 82 are in the storage position shown in Figure 11, the lower end line Ln of the spray nozzle row formed by the multiple spray nozzles n provided in each spray nozzle section is located above the lower surface L0 of the base 2 and also above the upper surface Lt of the pedestal 3.

[0085] 11, in which the movable body 5 is in the stored position, is compared with FIG. 1 or FIG. 9, in which the movable body 5 is in the deployed position, the movable body 5 is located relatively upward and forward in the stored position, and is located relatively downward and rearward in the deployed position. The same is true for the spray nozzle unit 81 and the second spray nozzle unit 82, which are connected and fixed to the movable body 5.

[0086] In a preferred embodiment, "relatively above" specifically means that the bottom end line Ln of the spray nozzle row is located above the upper surface Lt of the base 3. In a preferred embodiment, "relatively below" specifically means that the bottom end line Ln of the spray nozzle row is located below the lower surface L0 of the base 2. In the absence of the base 2, "relatively below" specifically means that the bottom end line Ln of the spray nozzle row is located below the lower surface of the base 3.

[0087] In addition, to move the movable body 5, the spray nozzle part 81, and the second spray nozzle part 82 from the stored position shown in Fig. 11 to the deployed position shown in Fig. 9, the above procedure can be reversed. That is, when the cylinder S is operated to gradually shorten the protruding length of the piston rod Sr, the actuating body 10 connected to the piston rod Sr rotates together with the connecting body 11 and the lower connecting arm 7 around the lower pin 4b of the support leg 4 in the opposite direction to the direction indicated by the arrow in Fig. 11, and the movable body 5 moves in parallel to the deployed position. Accordingly, the spray nozzle part 81 and the second spray nozzle part 82 also move in parallel to the deployed position.

[0088] As described above, in the paving material spraying device 1 of this example, the cylinder S, the actuator 10, and the connector 11 that connects the actuator 10 and the lower connecting arm 7 constitute a rotational drive mechanism that rotates the lower connecting arm 7 around the lower pin 4b of the support leg 4. That is, this rotational drive mechanism directly or indirectly connects the actuator 10 that extends to the front side of the lower pin 4b serving as the rotation axis to the lower connecting arm 7 at a position behind the lower pin 4b, and by applying a downward force near the front end of the actuator 10, it is a rotational drive mechanism that rotates the lower connecting arm 7.

[0089] According to this rotational drive mechanism, since the power source for rotationally driving the lower connecting arm 7 can be positioned on the side opposite to the lower connecting arm 7 with the lower pin 4b of the support leg 4 interposed therebetween, an advantage is obtained in that a relatively wide space for accommodating the moving body 5, the spraying nozzle portion 81, and the second spraying nozzle portion 82 can be secured on the rear side of the lower pin 4b.

[0090] In the example described above, the lower connecting arm 7 is rotationally driven by the rotational drive mechanism, but the upper connecting arm 6 may also be rotationally driven. Also, the configuration of the rotational drive mechanism is not limited to the above. The rotational drive mechanism may be of any mechanism as long as it can rotationally drive the upper connecting arm 6 or the lower connecting arm 7 about the upper pin 4a or the lower pin 4b. For example, a power transmission mechanism such as a gear may be used to rotate the upper connecting arm 6 or the lower connecting arm 7, or the upper connecting arm 6 or the lower connecting arm 7 may be rotated by pulling up the moving body 5 with a wire or the like. However, the rotational drive mechanism composed of the cylinder S, the actuator 10, and the connector 11 described above is considered to have a simple structure, high rigidity, and high robustness, so it is most preferable as the rotational drive mechanism in the vehicle-mounted paving material spraying device 1.

[0091] <A-5. Slide Mechanism> In a preferred embodiment, the paving material spraying device 1 according to the present invention includes a slide mechanism for sliding the pedestal 3 forward or backward with respect to the base 2 in a state where the moving body 5, the spraying nozzle portion 81, and the second spraying nozzle portion 82 are in the storage positions.

[0092] FIG. 12 shows a state in which the paving material spraying device 1 according to the present invention is slid forward with respect to the base 2 together with the pedestal 3 from the state shown in FIG. 11. As described above, since the pedestal 3 is supported by the base 2 so as to be slidable in the front-rear direction, after moving the moving body 5, the spraying nozzle portion 81, and the second spraying nozzle portion 82 to the storage positions, further, by sliding the pedestal 3 forward with respect to the base 2, the paving material spraying device 1, including the spraying nozzle portion 81 and the second spraying nozzle portion 82, can be compactly stored on the base 2.

[0093] At the time of deployment, the pedestal 3 may be slid backward with respect to the base 2, and then the moving body 5, the spraying nozzle portion 81, and the second spraying nozzle portion 82 may be translated from the storage positions to the deployment positions. In a preferred embodiment, appropriate stoppers are provided on the base 2 and / or the pedestal 3, and when the pedestal 3 reaches a predetermined position in the front or a predetermined position in the rear with respect to the base 2, the pedestal 3 can be held in that predetermined position.

[0094] The sliding of the pedestal 3 with respect to the base 2 may be performed manually, or may be equipped with an appropriate actuator such as a cylinder and slid by a button operation.

[0095] B. Paving Material Spraying Vehicle <B-1. Paving Material Spraying Vehicle> Next, a paving material spraying vehicle equipped with the vehicle-mounted paving material spraying device according to the present invention will be described.

[0096] FIGS. 13, 14, and 15 are a right side view, a left side view, and a rear view, respectively, of a paving material spraying vehicle equipped with the paving material spraying device 1 according to the present invention described above with reference to FIGS. 1 and the like. For convenience, wiring and piping are not shown.

[0097] 13 to 15, reference numeral 20 denotes a paving material spreader vehicle according to the present invention, and a paving material spreader 1 is mounted on a loading platform 21 of the paving material spreader vehicle 20. As shown in the figures, the paving material spreader 1 is mounted on the paving material spreader vehicle 20 with its forward direction coinciding with the forward direction of the normal travel of the paving material spreader vehicle 20. As is clear from the figures, the spreader 1 mounted on the spreader vehicle 20 is in the state shown in FIG. 12, that is, with the movable body 5, the spreader nozzle unit 81 and the second spreader nozzle unit 82 in the stored position, and with the pedestal 3 slid to its forward-most position relative to the base 2.

[0098] In the stored position, the lower end line Ln of the spray nozzle row composed of the multiple spray nozzles provided in the spray nozzle section 81 and the second spray nozzle section 82 is located above the upper surface Lt of the base 3, so that the paving material spraying device 1, together with the multiple spray nozzles that constitute the spray nozzle section 81 and the second spray nozzle section 82, can be placed on the loading platform 21 of the sprayer vehicle 20.

[0099] In Figures 13 to 15, 22 is a tank that stores liquid paving materials such as asphalt emulsion and a solvent-based primer, and 23 is an auxiliary tank that stores a second paving material such as a decomposition accelerator for asphalt emulsion. 24, which appears at the front in the right side view of Figure 13, is a battery. On the opposite side of the battery 24, as can be seen in the left side view of Figure 14, an electric air compressor 25 is mounted. 26 is a sub-tank that stores compressed air, and 27 is a control panel.

[0100] The vehicle-mounted paving material spraying device 1 of the present invention fits into a very compact state when in the stored position, so even a relatively small vehicle can easily accommodate the paving material spraying device 1. The remaining space in the vehicle's cargo bed can be used to load one or more tanks for storing the paving material, as well as other materials and substrates required for spraying, such as batteries, an air compressor, and even sub-tanks.

[0101] <B-2. Implementation Example> After installation, various components of the paving material spraying device 1, as well as other materials and equipment, are connected by appropriate wiring and / or pipelines. FIG. 16 is a conceptual diagram schematically showing an example of the connection. In FIG. 16, V is a shut-off valve, Vr is a pressure regulating valve, and Vc is a flow path switching valve. The thick lines indicate the piping for compressed air or paving materials, and the broken lines indicate the wiring for supplying electric power or electrical signals.

[0102] As shown in FIG. 16, the battery 24 is connected to the control panel 27. The control panel 27 is connected to the air compressor 25, the cylinder S, the shut-off valve V, the pressure regulating valve Vr, the flow path switching valve Vc, the power source of the stirring device to be described later, a pressure gauge (not shown), etc., and has the function of controlling the operation of the paving material spraying device 1 and other equipment and monitoring the situation. However, in FIG. 16, the wiring connecting the control panel 27 to various valves, pressure gauges, etc. is omitted for the sake of simplicity.

[0103] The compressed air discharge port of the air compressor 25 is connected to the flow path switching valve Vc via the shut-off valve V. The flow path switching valve Vc is a valve that switches and connects the pipeline P1 connecting the air compressor 25 and the sub-tank 26 and the pipeline P2 bypassing the sub-tank 26. The pipeline from the compressed air discharge port of the sub-tank 26 and the pipeline bypassing the sub-tank 26 merge at the confluence point P3, and then divide into two. One becomes the pipeline P4 and is connected to the tank 22 for paving materials via the shut-off valve V and the pressure regulating valve Vr, and the other becomes the pipeline P5 and is connected to the auxiliary tank 23 via the shut-off valve V and the pressure regulating valve Vr.

[0104] The compressed air from the air compressor 25 or the sub-tank 26 is adjusted to a predetermined pressure by the pressure regulating valves Vr arranged in the respective pipes P4, P5, and then supplied to the tank 22 and the auxiliary tank 23 which contain the paving material. The compressed air supplied to the tank 22 and the auxiliary tank 23 applies pressure to the liquid surface of the paving material contained in each tank, and functions as a delivery pressure which sends the paving material out from paving material delivery ports provided near the bottom of the tank 22 and the auxiliary tank 23.

[0105] Pipes P6 and P7 connected to the paving material discharge ports provided near the bottom of the tank 22 and the auxiliary tank 23 respectively pass through piping supports 131 and 132 provided in the paving material spraying device 1, where they branch into a plurality of pipes and are connected to the spray bar B1 of the spray nozzle unit 81 and the spray bar B2 of the second spray nozzle unit 82. The paving material supplied to the spray bar B1 or B2 is sprayed from each spray nozzle n by opening the on-off valve v provided in the nozzle pipe Pn of the spray nozzle n.

[0106] In this way, the pipeline connection continuing from the air compressor 25 and the sub-tank 26, via the tank 22 and the auxiliary tank 23 that contain the paving material, to the spray bar B1 of the spray nozzle unit 81 and the spray bar B2 of the second spray nozzle unit 82, respectively, constitutes a delivery device that delivers the paving material from the tank 22 and the auxiliary tank 23 that contain the paving material to the spray nozzle unit 81 and the second spray nozzle unit 82. In other words, the delivery device is a compressed air source and a mechanism that pressurizes and delivers the paving material contained in the tank 22 and / or the auxiliary tank 23 with compressed air from the compressed air source. Although not shown in the figure, in a preferred embodiment, a strainer for discharging sediment is attached to an appropriate location in the pipeline.

[0107] In FIG. 16, a pipe P6 connected to the paving material outlet of the tank 22 is branched off through a flow path switching valve Vc. 6b is a pipe for the manual nozzle.6b A manual nozzle N is connected to the downstream side of the pipe P6 via on-off valves V and V. 6b By switching the flow path switching valve Vc provided at the position where the two lines branch off, the paving material stored in the tank 22 can be sprayed from the multiple spray nozzles n connected to the spray bar B1 or from the manual spray nozzle N. When such a manual spray nozzle N is provided, it is convenient because it can precisely handle boundary areas and narrow areas that cannot be sufficiently sprayed by the multiple spray nozzles n connected to the spray bar B1 alone. Note that the manual spray nozzle N is not essential and may be omitted if not required. Of course, the manual spray nozzle N may also be attached to the pipe P7 connected to the auxiliary tank 23 via a flow path switching valve or the like.

[0108] In FIG. 16, H is a stirring device disposed in the tank 22, and H M is its power source. Power source H M When activated, the agitator blade attached to the tip of the agitator H rotates, agitating the paving material contained in the tank 22. If the paving material contained in the tank 22 contains powdered materials such as cement, there is a risk of precipitation occurring in the tank 22, so it is desirable to equip the tank 22 with an agitator H that agitates the contents inside. Agitation by the agitator H is also effective in the case of paving materials that are prone to uneven concentration.

[0109] Power source H for mixing device H Mis connected to the control panel 27 by appropriate wiring, and the driving and stopping of the agitator H can be appropriately controlled via the control panel 27. Incidentally, according to the knowledge obtained by the inventors, when compressed air is introduced into the tank 22 and the paving material is sprayed from the spray nozzle n or the manual spray nozzle N while the agitator H is rotating, the discharge of the paving material from the spray nozzle n or the manual spray nozzle N sometimes becomes unstable. When the rotation of the agitator H is stopped, the spraying of the paving material from the nozzle n or N becomes stable, so it was thought that the cause of the unstable discharge of the paving material is a vortex of the paving material generated in the tank 22 by rotating the agitator H.

[0110] Therefore, when the agitator H is attached in the tank 22, it is preferable to stop the agitation operation of the agitator H when the paving material is sprayed from the spray nozzle n or the manual nozzle N. When spraying from the nozzle is stopped, the operation of the agitator H can be resumed. Such control of the operation of the agitator H may be performed manually, but is preferably performed automatically via the control panel 27, for example, and it is preferable to automatically link the spraying and stopping of the paving material from the spray nozzle n or the manual nozzle N with the stopping and operation of the agitator H. In other words, it is preferable to stop the rotation of the agitator H at least while the paving material is being sprayed from the spray nozzle n or the manual nozzle N, and to wait until the spraying of the paving material from the spray nozzle n or the manual nozzle N has stopped before resuming the rotation of the agitator H.

[0111] If the paving material stored in the tank 22 is not likely to cause sedimentation, there is no need to install an agitator H. The same applies to the auxiliary tank 23 with regard to providing the agitator H and controlling its operation.

[0112] The above description has been given of the case where the tank 22 or the auxiliary tank 23 of the paving material spreader 20 according to the present invention shown in Figs. 13 to 15 is equipped with the agitator H. However, the above-mentioned effects obtained by equipping the agitator H or controlling its operation are not only obtained in the paving material spreader 20 according to the present invention shown in Figs. 13 to 15. The above-mentioned effects obtained by equipping the agitator H or controlling its operation can be obtained in any paving material spreader having a mechanism for storing paving material that may cause precipitation in a tank, delivering the paving material from the tank by pressurized gas such as compressed air, and spraying it from a nozzle, regardless of the specific configuration difference. Therefore, this specification discloses the technical idea of ​​a paving material spreader having a spraying mechanism for storing paving material in a tank, delivering the paving material from the tank by pressurized gas such as compressed air, and spraying it from a nozzle, which is equipped with an agitator for agitating the contents in the tank. This specification also discloses the technical idea of ​​a paving material spreader vehicle equipped with the above-mentioned mixing device, in which the spreading and stopping of paving material from a nozzle is linked to the stopping and rotation of the mixing device.

[0113] In the paving material spreader 20 according to the present invention, the spray bar B1 of the spray nozzle unit 81, which is located relatively forward, is connected to a pipe line passing through the pipe support 131, which is attached to the housing frame 12 at a relatively high position and is located below the pipe support 132, and the spray bar B2 of the second spray nozzle unit 82, which is located relatively rearward, is connected to a pipe line passing through the pipe support 132, which is attached to the housing frame 12 at a relatively high position and is located above the pipe support 131. Therefore, even if there are a large number of pipes corresponding to the number of paving material supply ports 161 or 162 provided on each spray bar, the large number of pipes do not become mixed up and entangled in a disorderly manner. In addition, there is an advantage that there is no risk of the pipes becoming entangled when the spray nozzle unit 81 and the second spray nozzle unit 82 are moved from the storage position to the deployment position and vice versa.

[0114] It goes without saying that when only one type of paving material is to be sprayed, the pipe leading from the auxiliary tank 23 of the paving material to the spray bar B2 of the second spraying nozzle portion 82 is not used.

[0115] On the other hand, the electricity supplied to the cylinder S via the control panel 27 is used as a power source for the rotational drive mechanism that operates the electric pump of the cylinder S, supplies hydraulic oil to the cylinder S, and moves the movable body 5 as well as the spray nozzle section 81 and the second spray nozzle section 82 between the stored position and the deployed position.

[0116] Sub-tank 26 may be filled with compressed air generated by air compressor 25, or may be filled with compressed air from another compressed air source, or a sub-tank pre-filled with compressed air may be installed. If there is a risk of a shortage of compressed air during spraying, two or more sub-tanks 26 may be installed. If battery 24 can sufficiently operate air compressor 25, sub-tank 26 may not be installed.

[0117] In a preferred embodiment, the tank 22 for containing the paving material is a tank with a vacuum double structure. Since a tank with a vacuum double structure has excellent heat retention, even in the case of paving materials that are required to be sprayed at a certain temperature or higher, for example, if the paving material that has been heated to a temperature higher than a predetermined temperature in a factory is filled in the tank 22 and dispatched, the paving material in the tank 22 can be kept at a temperature higher than the predetermined temperature until the paving material spraying vehicle 20 according to the present invention arrives at the construction site and completes the spraying work. As a result, even in the case of paving materials that are required to be sprayed at a certain temperature or higher, there is no need to heat the paving material tank 22 with a heater or the like, and power consumption of the on-board battery can be reduced. The same applies to the auxiliary tank 23.

[0118] In another suitable embodiment, the piping that constitutes the pipeline for guiding the compressed air discharged from the main tank and / or the sub-tank 26 of the air compressor 25 bypasses the tank 22 and the auxiliary tank 23 that store the paving material, and is provided in the paving material spraying device 1 in the pipelines P6, P 6b , P7, or is connected to the pipe supports 131 and 132, and the compressed air supplied through these pipelines or pipe supports is used for the pipelines P6, P 6b , P7, or for air blowing of pipelines and the hand spraying nozzle N on the downstream side of the pipe supports 131 and 132. Alternatively, it may be connected to an appropriate position near each spraying nozzle provided in the paving material spraying device 1 and used for air blowing of the pipeline on the downstream side of the connection point.

[0119] <B-3. Implementation Example - Part 2-> FIG. 17 is a conceptual diagram schematically showing another example of the connection of materials, equipment, piping, etc. mounted on the paving material spraying vehicle 20. In this example, it is different from the example shown in FIG. 16 in that in addition to the air compressor 25 and the sub-tank 26, a high-pressure gas cylinder 28 is mounted.

[0120] As shown in FIG. 17, the outlet pipeline of the high-pressure gas cylinder 28 merges at the merging point P8 with the pipeline from the air compressor 25 or the sub-tank 26 via the on-off valve V and the pressure regulating valve Vr. The high-pressure gas from the high-pressure gas cylinder 28 is used, for example, together with the compressed air or in place of the compressed air to make up for the shortage when the compressed air supplied from the air compressor 25 or the sub-tank 26 is likely to be insufficient.

[0121] That is, when the compressed air supplied from the air compressor 25 or the sub-tank 26 is insufficient and the pressure is likely to decrease, the high-pressure gas from the high-pressure gas cylinder 28 is supplied toward the confluence point P8 at a predetermined pressure, so that the pressure sufficient to send the paving material from the tank 22 and / or the auxiliary tank 23 toward the spraying nozzle section 81 or the second spraying nozzle section 82 can be ensured. In some cases, even when the compressed air from the air compressor 25 or the sub-tank 26 is completely stopped, only the high-pressure gas from the high-pressure gas cylinder 28 may be supplied to the tank 22 and / or the auxiliary tank 23 to send the paving material. Thereby, for example, it is possible to cope with cases where the compressed air with sufficient pressure is being accumulated in the main tank or the sub-tank 26 of the air compressor 25, or when the capacity of the battery 24 decreases and the air compressor 25 cannot be operated.

[0122] In a preferred embodiment, the paving material spraying vehicle 20 according to the present invention is equipped with a high-pressure gas cylinder 28 instead of the air compressor 25 and the sub-tank 26. As the high-pressure gas cylinder 28, for example, when using a commercially available cylinder with an internal volume of 8.4 liters and a maximum filling pressure of 29.4 MPa, about 100 liters of asphalt emulsion and about 20 liters of decomposition accelerator can be sufficiently sprayed.

[0123] As the high-pressure gas cylinder 28, any cylinder filled with an inert gas at high pressure may be used. For example, an FRP cylinder with an internal volume of 8.4 liters filled with nitrogen gas at a maximum filling pressure of 29.4 MPa is preferably used. Pipeline P for the hand-spraying nozzle 6b and the hand-spraying nozzle N, and the point of including the stirring device H are the same as those described above with reference to FIG. 16.

[0124] <B-4. Implementation Example - Example 3-> FIG. 18 is a conceptual diagram schematically showing still another example of the connection of materials, equipment, pipes, etc. mounted on the paving material spraying vehicle 20. In this example, a pump is used instead of a compressed gas source such as an air compressor 25, a sub-tank 26, and a high-pressure gas cylinder 28 as the paving material delivery device, which is different from the examples shown in FIGS. 16 and 17 above.

[0125] That is, in FIG. 18, 291 and 292 are pumps disposed in pipelines P6 and P7, respectively. The paving materials stored in the tank 22 and the auxiliary tank 23 are sent toward the spraying nozzle section 81 and the second spraying nozzle section 82 by the pumps 291 and 292 driven by the electric power supplied from the battery 24 via the control panel 27.

[0126] When pumps 291 and 292 driven by electric power are used as the delivery device for delivering the paving material, equipment such as the air compressor 25 becomes unnecessary, so the number of components of the base material mounted on the paving material spraying vehicle 20 is reduced, and the piping is also simplified. As the pumps 291 and 292, gear pumps are preferably used. Pipeline P for the hand-spraying nozzle 6b and the hand-spraying nozzle N, and the stirring device H are the same as those described above with reference to FIG. 16.

[0127] <B-5. Circulation cleaning pipeline> In a preferred embodiment, the paving material spraying vehicle 20 according to the present invention includes a pipeline P6 connecting the tank 22 and the spraying nozzle section 81, and / or a circulation cleaning pipeline for cleaning the spray bar B1 provided in the spraying nozzle section 81. In still another preferred example, the paving material spraying vehicle 20 according to the present invention includes a pipeline P7 connecting the auxiliary tank 23 and the spraying nozzle section 82, and / or a circulation cleaning pipeline for cleaning the spray bar B2 provided in the spraying nozzle section 82.

[0128] Incidentally, the circulation cleaning pipeline is a pipeline that can circulate a cleaning agent including the pipeline to be cleaned and repeatedly clean the target pipeline. In particular, when the paving material used contains powdery materials such as cement and is likely to precipitate in the pipeline, it is effective when the cleaning agent cannot be completely cleaned by simply flowing it once, or in other cases. In addition, since the cleaning agent that has once passed through the pipeline can be circulated and used to clean the target pipeline, excellent effects can be obtained in that the consumption of the cleaning agent can be suppressed and the environmental load can be reduced.

[0129] Hereinafter, a case where the paving material spraying vehicle 20 is provided with a circulation cleaning pipeline for cleaning the pipeline P6 connecting the tank 22 and the spraying nozzle section 81 and / or the spray bar B1 provided in the spraying nozzle section 81 will be described as an example. The same applies to the case where a circulation cleaning pipeline for cleaning the pipeline P7 connecting the auxiliary tank 23 and the spraying nozzle section 82 and / or the spray bar B2 provided in the spraying nozzle section 82 is provided.

[0130] <B-5-1. Circulation cleaning pipeline - Part 1-> FIG. 19 is a conceptual diagram schematically showing an example of the paving material spraying vehicle 20 provided with the above-described circulation cleaning pipeline. For the sake of convenience, only the periphery of the tank 22 and the spraying nozzle section 81 and the pipeline portion constituting the circulation cleaning pipeline are shown.

[0131] In FIG. 19, 33 is a container for the cleaning agent, and Z is the cleaning agent. As the cleaning agent Z, for example, a solvent such as thinner is preferably used. 293 is a pump, and in the figure, it has a function of sending out a liquid material from the lower part to the upper part. As the pump 293, for example, a gear pump is preferably used, but it is not limited thereto.

[0132] P8 is a discharge pipeline from the pump 293, and P9 is a suction pipeline of the pump 293. The discharge pipeline P8 branches into a first discharge pipeline P 8-1 and a second discharge pipeline P 8-2 through a flow path switching valve Vc5. The first discharge pipeline P 8-1 opens into the tank 22 through an on-off valve V9. On the other hand, the second discharge pipeline P 8-2The second discharge pipe P is connected to a connection member cj for a one-touch coupler at its tip. 8-2 It is preferable to use a flexible annular member as the support.

[0133] The suction pipe P9 branches on the upstream side of the pipe, one of which is the first suction pipe P 9-1 The tip opening of the second suction pipe P is inserted into the cleaning agent container 33 via the on-off valve V8. 9-2 is connected to the flow path switching valve Vc4 with an on-off valve V7 interposed therebetween.

[0134] At the right end of the spray bar B1, a first circulation pipe P 10 is connected, and the first circulation pipe P 10 The tip of the pipe is connected to the one-touch coupler cj. V5 is the first circulation pipe P 10 The second circulation pipe P is connected to the left end of the spray bar B1. 11 is connected, and the second circulation pipe P 11 The tip of the second circulation pipe P is connected to the flow path switching valve Vc4. 11 The second suction line P 9-2 or one-touch coupler C3. One-touch couplers C1 and C2 are attached to the middle of pipe P6, which supplies the paving material from tank 22 to spray bar B1 via piping support 131, via flow path switching valves Vc2 and Vc3.

[0135] The configuration of the circulating cleaning pipe shown in Fig. 19 during the circulating cleaning operation will be described below with reference to Figs. 20 to 23. Note that, if any paving material remains in the tank 22 prior to cleaning, it is desirable to discharge all of it to the outside through the spray nozzles n attached to the spray bar B1.

[0136] (preparation process) Figure 20 shows the pipeline configuration when the pump 293 is operated to pump up the cleaning agent Z from the cleaning agent container 33 into the tank 22. In the figure, the valves painted in black (the pressure regulating valve Vr and the on-off valves V1, V2, V3, V4, V5, V6, and V7 in Figure 20) are in the "closed" state, and the valves painted in white (the on-off valves V8 and V9 in Figure 20) are in the "open" state.

[0137] When the pump 293 is operated in the state shown in FIG. 20, the detergent Z in the detergent container 33 is sucked through the first suction pipe P 9-1 The pump 293 and the first discharge line P 8-1 and pump 293 into tank 22. When the amount of cleaning agent Z deemed necessary for cleaning is pumped into tank 22, pump 293 stops operating. This completes the preparation process for cleaning.

[0138] (Spray bar B1 cleaning process (left to right)) FIG. 21 shows a pipeline configuration when the spray bar B1 is repeatedly cleaned with cleaning agent Z pumped into the tank 22 from the left end to the right end.

[0139] As shown in FIG. 21, the first suction pipe P, which was inserted into the cleaning agent container 33 in FIG. 9-1 The tip of the second discharge pipe P is inserted into the tank 22. 8-2 The downstream end of the one-touch coupler C3 is connected to the second circulation pipe P through a flow path switching valve Vc4. 11 On the other hand, the first circulation pipe P connected to the right end of the spray bar B1 10 The tip of the valve is connected to a one-touch coupler C2 via a connecting member cj. The open / closed state of the valve and the switching state of the flow path switching valve are as shown in the figure.

[0140] When the pump 293 is operated in this state, the cleaning agent Z contained in the tank 22 is sucked through the first suction pipe P 9-1After passing through the pump 293, the water is discharged through the flow path switching valve Vc5 to the second discharge line P 8-2 The second discharge line P 8-2 The cleaning agent Z that flows into the chamber passes through the one-touch coupler C3, the flow path switching valve Vc4, and the second circulation pipe P 11 The cleaning agent Z flows from the left side into the spray bar B1 as shown by the arrow in the figure, cleaning the inside of the spray bar B1 from left to right, and then passes through the first circulation pipe P 10 The first circulation pipe P 10 The cleaning agent Z discharged to the tank 22 passes through the one-touch coupler C2 and advances to the pipe P6, and flows back into the tank 22 from the paving material outlet provided near the bottom of the tank 22. The cleaning agent Z that flows back into the tank 22 flows again through the first suction pipe P 9-1 The water is sucked up by the suction pipe, passes through the above-mentioned pipe line to clean the inside of the spray bar B1, and returns to the tank 22, where circulating cleaning is carried out.

[0141] (Spray bar B1 cleaning process (right to left)) FIG. 22 shows a piping configuration when the spray bar B1 is repeatedly cleaned from the right end to the left end using cleaning agent Z pumped into the tank 22.

[0142] As shown in FIG. 22, the first circulation pipe P, which was connected to the one-touch coupler C2 in FIG. 21, 10 The tip of the second discharge pipe P is inserted into the cleaning agent Z in the tank 22. 8-2 The downstream end of the valve is connected to a one-touch coupler C1 via a connecting member cj. The open / closed state of the valve and the switching state of the flow path switching valve are as shown in the figure.

[0143] When the pump 293 is operated in this state, the cleaning agent Z contained in the tank 22 flows through the first circulation pipe P 10The cleaning agent Z is sucked up from the tip of the spray bar B1 and flows into the spray bar B1 from the right end of the spray bar B1. As shown by the arrow in the figure, the cleaning agent Z flows from right to left while cleaning the inside of the spray bar B1, and flows out of the left end of the second circulation pipe P 11 The discharged cleaning agent Z is discharged into the second suction line P 9-2 and is drawn through the second discharge line P 8-2 The cleaning agent Z flows back into the tank 22 from the paving material outlet provided near the bottom of the tank 22 through the one-touch coupler C1 and the flow path switching valve Vc2. The cleaning agent Z that flows back into the tank 22 flows again through the first circulation pipe P 10 The water is sucked up by the pump 293, passes through the above-mentioned pipes to clean the inside of the spray bar B1 from right to left, and returns to the tank 22 via the pump 293, where circulating cleaning is performed.

[0144] As described above, according to the pipeline configuration shown in FIG. 19, the spray bar B1 is incorporated into a part of the pipeline to form a circulating cleaning pipeline, and the flow direction of the cleaning agent Z flowing through the spray bar B1 can be appropriately reversed or changed from left to right or right to left. The above pipeline configuration has the advantage of improving the cleaning efficiency compared to cleaning the inside of the spray bar B1 only in one direction, from left to right or right to left. In addition, since the cleaning agent Z pumped into the tank 22 can be used repeatedly for cleaning, the consumption of the cleaning agent Z can be suppressed and the pipeline can be cleaned with less environmental impact. Furthermore, according to the pipeline configuration shown in FIG. 19, the tank 22 in which the paving material is stored is incorporated into the circulating cleaning pipeline, so that the cleaning agent Z can be circulated to clean the inside of the spray bar B1 and the inside of the tank 22 in which the paving material is stored can also be repeatedly cleaned.

[0145] In the above description, the second discharge pipe P 8-2 The second discharge pipe P is connected to the one-touch coupler C3 connected to the flow path switching valve Vc4 or to the one-touch coupler C1 connected to the flow path switching valve Vc2.8-2 is switching the connection destination of the downstream end portion, and the switching of the connection destination may be performed by any mechanism. For example, in a preferred embodiment, the second discharge pipeline P 8-2 the downstream end of is branched into a first branch pipeline and a second branch pipeline via a separately provided flow path switching valve, and the downstream end portions of the respective branch pipelines are connected to the flow path switching valve Vc4 or the flow path switching valve Vc2. By switching the separately provided flow path switching valve, the second discharge pipeline P 8-2 is connected to either the flow path switching valve Vc4 or the flow path switching valve Vc2.

[0146] (Cleaning process of pipeline P6 and spraying nozzle n) FIG. 23 shows a pipeline configuration when cleaning the pipeline P6 connecting the tank 22 and the spray bar B1 and further the spraying nozzle n connected to the spray bar B1 using the cleaning agent Z pumped up into the tank 22.

[0147] As shown in FIG. 23, the pressure regulating valve Vr is set to "open", and compressed air from the air compressor 25 or the sub-tank 26 is introduced into the tank 22 to pressurize the liquid level of the cleaning agent Z in the tank 22. The pressurized cleaning agent Z advances while cleaning the pipeline P6, flows into the spray bar B1, and after cleaning the spray bar B1, is sprayed to the outside while cleaning the nozzle pipeline Pn and the spraying nozzle n. Also, although not shown, while pressurizing the liquid level of the cleaning agent Z in the tank 22 with compressed air, the flow path switching valve Vc1 is switched to introduce the cleaning agent Z into the pipeline P 6b and the hand-held nozzle N can be cleaned by spraying it to the outside from the hand-held nozzle N.

[0148] <B-5-2. Circulating cleaning pipeline - Part 2 -> FIG. 24 is a conceptual diagram schematically showing another example of the paving material spraying vehicle 20 provided with a circulating cleaning pipeline. Similar to FIG. 19, for the sake of convenience, only the tank 22, the periphery of the spraying nozzle portion 81, and the pipeline portions constituting the circulating cleaning pipeline are shown.

[0149] The pipeline configuration shown in FIG. 24 includes a second discharge pipeline P 8-2 The second suction pipe P 9-2 The upstream end of the first circulation pipe P is split into two, and one-touch couplers C4 and C5 are attached to the ends of the two pipes. 11 19 in that a connecting member cj is attached to the tip of the pipe.

[0150] The pipe configuration during circulation cleaning of the circulation cleaning pipe shown in Fig. 24 will be described below with reference to Fig. 25 to Fig. 28. Note that, prior to cleaning, if any paving material remains in the tank 22, it is desirable to discharge all of it to the outside through the spray nozzles n attached to the spray bar B1.

[0151] (preparation process) 25 shows a pipeline configuration when the pump 293 is operated to pump the cleaning agent Z from the cleaning agent container 33 into the tank 22. As shown in the figure, the first suction pipeline P 9-1 and a first discharge line P 8-1 In this case, only the on-off valve V9 provided in the first embodiment is in the "open" state, and the other on-off valves are in the "closed" state.

[0152] When the pump 293 is operated in the state shown in FIG. 25, the detergent Z in the detergent container 33 is sucked through the first suction pipe P 9-1 The pump 293 and the first discharge line P 8-1 and pump 293 into tank 22. When the amount of cleaning agent Z deemed necessary for cleaning is pumped into tank 22, pump 293 stops operating. This completes the preparation process for cleaning.

[0153] (Spray bar B1 cleaning process (right to left)) FIG. 26 shows a piping configuration when the spray bar B1 is repeatedly cleaned from the right end to the left end using cleaning agent Z pumped into the tank 22.

[0154] As shown in FIG. 26, the first suction pipe P, which was set to “open” in FIG.9-1 The on-off valve V8 in the second suction line P 9-2 On-off valves V7 and V 12 is set to "open" and the shutoff valve V 12 The second suction line P to which 9-2 The one-touch coupler C5 at the tip of the second circulation pipe P 11 The end of the first circulation pipe P is connected via a connecting member cj. 10 The tip of the valve is connected to a one-touch coupler C2 via a connecting member cj. The open / closed states of the other valves and the switching state of the flow path switching valve are as shown in the figure.

[0155] When the pump 293 is operated in this state, the paving material discharge port provided near the bottom of the tank 22 is connected to the suction port of the pump 293 through the pipe P6, the flow path switching valve Vc3, the first circulation pipe P 10 , spray bar B1, second circulation line P 11 , and the second suction line P 9-2 Therefore, the cleaning agent Z contained in the tank 22 is transferred through the pipe P6, the flow path switching valve Vc3, the first circulation pipe P 10 , spray bar B1, second circulation line P 11 , and the second suction line P 9-2 The liquid is drawn through the first discharge line P 8-1 Then, the cleaning agent Z flows through the pipe P6, the flow path switching valve Vc3, and the first circulation pipe Pc3, and returns to the tank 22. At this time, the cleaning agent Z flows through the spray bar B1 in the direction from right to left as shown by the arrow in the figure, cleaning the inside of the spray bar B1. The cleaning agent Z that has returned to the tank 22 flows again through the pipe P6, the flow path switching valve Vc3, and the first circulation pipe Pc3. 10 , spray bar B1, second circulation line P 11 , and the second suction line P 9-2 As air is drawn through the nozzles into the pump 293, the interior of the spray bar B1 is repeatedly cleaned.

[0156] (Spray bar B1 cleaning process (left to right)) FIG. 27 shows a piping configuration when the spray bar B1 is repeatedly cleaned with cleaning agent Z pumped into the tank 22 from the left end to the right end.

[0157] As shown in Figure 27, the first circulation pipe P, which was connected to the one-touch coupler C2 in Figure 26, 10 The tip of the second suction pipe P 9-2 The second circulation pipe P is connected to a one-touch coupler C4 attached to one end of the second circulation pipe P. 11 The tip of the second suction pipe P 9-2 It is connected to a one-touch coupler C1 attached to the middle of the pipe P6 via a flow path switching valve Vc2, rather than to a one-touch coupler C5 attached to one end of the pipe P6.

[0158] When the pump 293 is operated in this state, the paving material discharge port provided near the bottom of the tank 22 is connected to the suction port of the pump 293 through the pipe P6, the flow path switching valve Vc2, the second circulation pipe P 11 , spray bar B1, first circulation line P 10 , and the second suction line P 9-2 Therefore, the cleaning agent Z contained in the tank 22 is transferred through the pipe P6, the flow path switching valve Vc2, the second circulation pipe P 11 , spray bar B1, first circulation line P 10 , and the second suction line P 9-2 The liquid is drawn through the first discharge line P 8-1 The cleaning agent Z flows through the pipe P6, the flow path switching valve Vc2, and the second circulation pipe Pc3, and then flows back into the tank 22. At this time, the cleaning agent Z flows through the spray bar B1 in the direction from left to right as shown by the arrow in the figure, cleaning the inside of the spray bar B1. The cleaning agent Z that has returned to the tank 22 flows again through the pipe P6, the flow path switching valve Vc2, and the second circulation pipe Pc3. 11 , spray bar B1, first circulation line P 10 , and the second suction line P 9-2 As air is drawn through the nozzles into the pump 293, the interior of the spray bar B1 is repeatedly cleaned.

[0159] (Pipe P6 cleaning process) FIG. 28 shows the line configuration when the cleaning agent Z pumped into the tank 22 is used to repeatedly clean the line P6 and the spray bar B1.

[0160] As shown in Figure 28, the first circulation pipe P 10 and the second suction line P 9-2 The connection relationship with the second circulation pipe P is the same as that shown in FIG. 11 The tip of the second suction pipe P is not the one-touch coupler C1 attached to the middle of the pipe P6 via the flow path switching valve Vc2, but the second suction pipe P 9-2 The second suction pipe P is connected to a one-touch coupler C5 attached to one end of the second suction pipe P. 9-2 Two on-off valves V located near the quick-release couplers C5 and C4 12 , V 13 Both are listed as “open.”

[0161] When the pump 293 is operated in this state, the paving material discharge port provided near the bottom of the tank 22 is connected to the suction port of the pump 293 through the pipe P6, the spray bar B1, the first circulation pipe P 10 Or second circulation pipe P 11 , and the second suction line P 9-2 Since the cleaning agent Z contained in the tank 22 is connected through the pipe P6, the spray bar B1, the first circulation pipe P 10 Or second circulation pipe P 11 , and the second suction line P 9-2 The liquid is drawn through the first discharge line P 8-1 and returns to the tank 22. At this time, the cleaning agent flows through the pipe P6 connecting the tank 22 and the spray nozzle unit 81, cleaning the inside of the pipe P6. The cleaning agent Z also flows through the spray bar B1 in a direction from approximately the center toward both the left and right ends, cleaning the inside of the spray bar B1 as well. The cleaning agent Z that has returned to the tank 22 passes through the pipe P6, the spray bar B1, and the first circulation pipe P 10 Or second circulation pipe P 11 , and the second suction line P 9-2As a result, the inside of the pipe P6 and the inside of the spray bar B1 are repeatedly washed.

[0162] 24, the spray bar B1 and / or the pipe P6 are incorporated into a portion of the pipe to form a circulating cleaning pipe, and the inside of the spray bar B1 and the pipe P6 connecting the tank 22 and the spray nozzle unit 81 can be repeatedly cleaned. Moreover, the flow direction of the cleaning agent Z flowing through the spray bar B1 can be appropriately reversed or changed from left to right or right to left for cleaning, which provides the advantage of improved cleaning efficiency compared to cleaning by flowing the cleaning agent Z through the spray bar B1 in only one direction.

[0163] In addition, the cleaning agent Z pumped into the tank 22 can be used repeatedly for cleaning, which has the advantage of reducing the consumption of the cleaning agent Z and cleaning the pipeline with less environmental impact. Furthermore, according to the pipeline configuration shown in Fig. 24, the tank 22 in which the paving material is stored is incorporated into the circulating cleaning pipeline, which has the advantage that the cleaning agent Z can be circulated to clean the inside of the spray bar B1 and / or the inside of the pipeline P6 connecting the tank 22 and the spray nozzle portion 81, and the inside of the tank 22 in which the paving material is stored can also be repeatedly cleaned.

[0164] In the above description, the first circulation pipe P 10 The connecting member cj attached to the tip of the 13 Depending on whether it is connected to the one-touch coupler C4 connected to the first circulation pipe P 10 The connection destination of the tip of the spray bar B1 on the opposite side is switched, but this connection destination may be switched using a flow path switching valve instead of a one-touch coupler. For example, in a preferred embodiment, the first circulation pipe P 10 is connected to the first branch pipe P for first circulation through a separately provided flow path switching valve in the vicinity of the connection with the spray bar B1. 10-1 and the first circulation two-branch pipeline P 10-2The end of each branch line is connected to a flow path switching valve Vc3 or an on-off valve Vc4. 13 By switching the above-mentioned flow path switching valve, which is separately provided, the first circulation pipe P 10 is the switching valve Vc3 or the opening and closing valve V 13 is switched and connected.

[0165] Similarly, in the above description, the second circulation pipe P 11 The connecting member cj attached to the tip of the 12 Depending on whether it is connected to the one-touch coupler C5 connected to the second circulation pipe P 11 The connection destination of the tip of the spray bar B1 on the opposite side is switched, but this connection destination may be switched using a flow path switching valve instead of a one-touch coupler. For example, in a preferred embodiment, the second circulation pipe P 11 is connected to the spray bar B1 via a separately provided flow path switching valve, 11-1 and the second circulation branch line P 11-2 The end of each branch line is connected to a flow path switching valve Vc2 or an on-off valve Vc3. 12 By switching the above-mentioned flow path switching valve, which is separately provided, the second circulation pipe P 11 is the switching valve Vc2 or the opening and closing valve V 12 is switched and connected.

[0166] To clean the spray nozzle pipe Pn and the spray nozzle n, compressed air from the air compressor 25 or the sub-tank 26 is introduced into the tank 22, and the cleaning agent Z in the tank 22 is pushed out to the pipe P6 and the spray bar B1, and then passed through the nozzle pipe Pn and sprayed from the spray nozzle n. Similarly, the manual nozzle N is cleaned by pressing the liquid surface of the cleaning agent Z in the tank 22 with compressed air while switching the flow path switching valve Vc1 to push the cleaning agent Z into the pipe P6. 6b The solution can be introduced into the room and then sprayed outside using the manual nozzle N.

[0167] Incidentally, the above description was about the case where the paving material spraying vehicle 20 according to the present invention shown in FIGS. 13 to 15 is provided with a circulation cleaning pipeline that connects the tank 22 and the spraying nozzle section 81, and / or the spray bar B1 provided in the spraying nozzle section 81, and further includes the tank for paving material in a part of the pipeline. However, the cleaning effect obtained by providing the circulation cleaning pipeline as described above is not limited to the paving material spraying vehicle 20 according to the present invention shown in FIGS. 13 to 15. For any paving material spraying vehicle that stores the paving material in a tank, sends out the paving material from the tank by a pressurized gas such as compressed air, and sprays it from a spraying nozzle via a spray bar, the same effect can be obtained regardless of the specific configuration differences. Therefore, this specification discloses the technical idea of a paving material spraying vehicle that stores the paving material in a tank, sends out the paving material from the tank by a pressurized gas such as compressed air, and sprays it from a spraying nozzle attached to a spray bar, and has a circulation cleaning pipeline that includes a pipeline connecting the tank and the spraying nozzle section and / or the spray bar provided in the spraying nozzle section in a part of the pipeline. In a preferred embodiment, the above circulation cleaning pipeline is a circulation cleaning pipeline that includes the tank for paving material in a part of the pipeline.

[0168] <B-6. Operation Example> Next, based on the paving material spraying vehicle 20 shown in FIGS. 13 to 15, an operation example of the paving material spraying vehicle according to the present invention will be described. When the paving material spraying vehicle 20 equipped with the paving material spraying device 1 according to the present invention and other necessary materials and equipment arrives at the construction site, first, as shown in the right side view of FIG. 29, the mounted paving material spraying device 1 is slid backward together with the pedestal 3. Then, the cylinder S is operated to move the spraying nozzle section 81 and the second spraying nozzle section 82 to the deployment position together with the moving body 5. In the figure, 30 represents the construction surface.

[0169] FIG. 30 shows the state in which the spray nozzle section 81 and the second spray nozzle section 82 move to the deployed position together with the moving body 5, and further the spray bars B1 and B2 are unfolded and stretched out in a straight line. In this state, the paving material is sent from the tank 22 and the auxiliary tank 23 toward the spray nozzle section 81 and the second spray nozzle section 82, and when the opening / closing valve v is set to "open", the paving material X1 stored in the tank 22 and the paving material X2 stored in the auxiliary tank 23 are sprayed onto the construction surface 30. At the same time, the paving material spraying vehicle 20 is driven in the direction of the white arrow in the figure, so that the paving materials X1 and X2 are sprayed onto the construction surface 30. Note that, when spraying, it is desirable to cover the periphery of the spray nozzle rows of the spray nozzle section 81 and the second spray nozzle section 82 with an appropriate anti-scattering cover.

[0170] In a preferred embodiment, the paving material spreader 20 is a self-propelled vehicle equipped with a driving force, so a tank containing a relatively large amount of paving material can be mounted on the vehicle, compared to a vehicle that is pushed or towed by human power. Therefore, although it is smaller in scale than a conventional asphalt distributor, it can be used on sites with an extremely large construction area, compared to a spreader that is pushed or towed by human power.

[0171] Furthermore, the power source for operating the paving material spraying device 1 is electricity supplied from the on-board battery 24 and compressed air supplied from the on-board air compressor 25 or sub-tank 26, so there is no direct generation of CO2, and this can greatly contribute to the realization of a carbon-neutral, decarbonized society.

[0172] When the air compressor 25 and / or the sub-tank 26 are used in combination with the high-pressure gas cylinder 28, or when the high-pressure gas cylinder 28 is used instead of the air compressor 25 and / or the sub-tank 26, there is no direct CO2 emission from the spraying work itself, which contributes greatly to the realization of a carbon-neutral, decarbonized society. The same is true when the paving material is delivered from the tank 22 or the auxiliary tank 23 to the spray nozzle unit 81 or the second spray nozzle unit 82 by the pumps 291, 292 driven by power from the battery 24.

[0173] In a preferred embodiment, the paving material spreader 20 according to the present invention is an electric vehicle, a fuel cell vehicle, or a hydrogen engine vehicle. When the paving material spreader 20 according to the present invention is an electric vehicle, a fuel cell vehicle, or a hydrogen engine vehicle, the generation of CO2 can be eliminated even in relation to the running of the paving material spreader 20 itself, and thus, in combination with the paving material spreader 1 described above, it can contribute even more greatly to the realization of a carbon-neutral decarbonized society with no environmental load. In another preferred embodiment, the paving material spreader 20 according to the present invention is a hybrid vehicle that runs on an engine and an electric motor. When the paving material spreader 20 according to the present invention is a hybrid vehicle, the generation of CO2 can be significantly reduced even in relation to the running of the paving material spreader 20 itself, and thus, in combination with the paving material spreader 1 described above, it can contribute even more greatly to the realization of a carbon-neutral decarbonized society with less environmental load.

[0174] C. Another Preferred Example of a Vehicle-Mounted Paving Material Spraying Device 31 is a plan view showing another preferred example of the vehicle-mounted paving material sprinkling device 1 according to the present invention. In the figure, 31 is a sliding member, which is supported by a base 2 so as to be slidable in the front-rear direction relative to the base 2.

[0175] Reference numerals 32, 32 denote running grooves provided in the slide member 31. The base 3 has running wheels (not shown) on its underside that fit into the running grooves 32, 32, and is slidable in the left-right direction on the slide member 31 along the running grooves 32, 32. In this way, the base 3 is supported by the slide member 31 so as to be slidable in the left-right direction relative to the base 2.

[0176] 32 shows a state where the base 3 is slid leftward relative to the slide member 31, in other words, leftward relative to the base 2, and FIG. 33 shows a state where the base 3 is slid rightward relative to the slide member 31, in other words, rightward relative to the base 2. In this way, by sliding the base 3 left and right relative to the base 2, the spray nozzles in the spray nozzle unit 81 and the second spray nozzle unit 82 also slide left and right, so that the spray area of ​​the paving material can be shifted left and right. As a result, for example, when there is an area in front of the traveling direction of the paving material sprayer 20 according to the present invention where it is not necessary to spray the paving material or where it is preferable not to spray the paving material, depending on the size of the area, it is only necessary to slide the base 3 left and right to avoid the area, and there is no need to change the traveling direction of the paving material sprayer 20 or make it meander, which is extremely convenient.

[0177] The base 3 may be slid manually, but in a preferred embodiment, an appropriate actuator is provided between the base 3 and the sliding member 31, and the base 3 can be slid manually or automatically via a control panel 27. [Industrial Applicability]

[0178] As described above, the vehicle-mounted paving material spreader device and the paving material spreader vehicle equipped with it according to the present invention can respond flexibly to medium- to small-scale construction sites, and have great industrial applicability. [Explanation of symbols]

[0179] 1 Paving material spreading device 2 Base 3 Pedestal 4 Support legs 5. Mobile 6 Upper connecting arm 7 Lower connecting arm 8 Spray nozzle part 9 Connecting members 10 Actuator 11 Connectors 12 Housing Slots 13 Piping support 14 Post Frame 15 Upper Frame 16 Paving material supply port 17 Pipe joint 20 Paving material spreader 21 Cargo Bed 22 Paving material tank 23 Auxiliary Tank 24 Batteries 25 Air Compressor 26 Subtank 27 Control Panel 28 High Pressure Gas Cylinder 291, 292, 293 pumps 30 Construction side 31 Slide member 32 Running groove 33 Detergent container B Spray Bar H Mixing device n Spray nozzle N Manual nozzle S cylinder v On-off valve X1, X2 paving material Z Cleaning Agent

Claims

1. With a pedestal, A support leg attached to the base; a movable body supported so as to be movable in parallel between a stored position that is relatively upward and forward with respect to the support legs and a deployed position that is relatively downward and rearward with respect to the support legs; a spray nozzle assembly including a spray bar and one or more spray nozzles connected to the spray bar; having The spray nozzle unit is attached to the movable body. A vehicle-mounted paving material spreading device.

2. Further, the base is provided.

2. A vehicle-mounted paving material spreading device according to claim 1, wherein the pedestal is supported on the base directly or via another member so as to be slidable in the front-rear and / or left-right directions relative to the base.

3. A vehicle-mounted paving material spreading device as described in claim 1 or 2, wherein the mechanism for supporting the movable body so that it can move parallel to the support leg is a parallel link mechanism connecting the support leg and the movable body with two connecting arms that are parallel to each other.

4. 4. The vehicle-mounted paving material spreading device according to claim 3, wherein at least one of said two connecting arms is provided with a length adjustment means.

5. 4. The vehicle-mounted paving material spreading device according to claim 3, further comprising a rotary drive mechanism for rotating at least one of the two connecting arms about an axis of connection with the support leg.

6. A vehicle-mounted paving material spreading device as described in claim 1 or 2, having a second spreading nozzle section equipped with one or more spreading nozzles, the second spreading nozzle section being attached to the movable body and / or the spreading nozzle section.

7. A paving material spreader vehicle comprising: a vehicle-mounted paving material spreader as described in claim 1 or 2, mounted with its forward direction aligned with the front of the vehicle's normal driving direction; and further comprising at least one paving material tank, a pipeline connecting the tank to the spreader nozzle section of the mounted paving material spreader; and a paving material delivery device which delivers paving material from the tank to the spreader nozzle section via the pipeline.

8. 8. A paving material spreader according to claim 7, wherein said tank is a vacuum double-structure tank.

9. 8. The paving material spreader according to claim 7, wherein the tank is provided with an agitating device for agitating the contents in the tank.

10. A paving material spraying vehicle as described in claim 7, which has a circulation pipe formed by including the pipe connecting the tank and the spray nozzle section or the spray bar provided on the spray nozzle section as part of the pipe, and has a circulation cleaning pipe through which cleaning agent circulates during cleaning.

11. 11. The paving material spreader according to claim 10, wherein the circulating cleaning pipe is formed by further including the tank as a part of the pipe.

12. 11. The paving material spreader according to claim 10, wherein the circulating cleaning pipe is formed by further including a pump device in a portion of the pipe.

13. 8. The paving material spreader according to claim 7, further comprising a battery, a battery and an electric air compressor, a high-pressure gas cylinder, or two or more of them as an energy source for operating the paving material delivery device.

14. 8. The paving material spreader vehicle of claim 7, which is an electric vehicle, a fuel cell vehicle, a hydrogen engine vehicle, or a hybrid vehicle.

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