JPH06104963B2 - Asphalt solution spraying device - Google Patents

Description

The present invention relates to an asphalt solution spraying device capable of spraying an asphalt solution according to the width of a road.

[Conventional technology]

For paving roads, it is well known that the asphalt solution melted by a spray car is sprayed on the road, but at this time, the road width varies depending on the expressway, the general road, the living road, etc. Since there are narrow and wide parts on the road, it is necessary to spray the asphalt solution according to the width.

For this reason, the conventional asphalt solution spraying device in the asphalt spraying vehicle uses a spraying pipe having a constant length in which nozzles are arranged at predetermined intervals in the lengthwise direction, and when the spraying is performed according to the road width, Close the cocks of the nozzles arranged at both ends protruding from the side and spray the asphalt solution from the other nozzles, or make an extension pipe foldable on a spray pipe of a certain length so that the width of When paving a large road portion, the extension pipe is used, and among the nozzles arranged at predetermined intervals in the length direction, a required number of nozzles are opened and sprayed. .

[Problems to be Solved by the Invention]

However, in the case of paving the road only with the spray pipes like the former, there is a big problem that the paving of the road part with an increased width cannot be done. Therefore, the extension pipe is provided like the latter. However, in this case, after rotating the extension pipe in the extension direction from the spray pipe, the worker opens the predetermined number of nozzles of the extension pipe located in the road width each time and turns the roadside. It is necessary to perform the work of closing the nozzle of the extension pipe part protruding from
Since the end of the extension pipe always projects outward from the side of the road, paving work cannot be performed if there is an obstacle.In that case, suspend the spraying work and fold the extension pipe to remove the obstacle. If it is avoided, the paving work will be carried out again, so that there is a problem that the work efficiency is significantly reduced.

For this reason, as described in JP-A-57-178003, all the nozzles provided on the distribution pipe and extension pipes that are extendably and contractably arranged in the length direction A device has been developed which is configured to automatically open a nozzle of a protruding pipe portion of an extension pipe and spray an asphalt solution according to the width of a road.

However, the nozzle opening / closing mechanism of the extension pipe is such that while mounting a horizontally long fixing plate in parallel with the spray pipe, each nozzle provided in the extension pipe is opened / closed by opening and closing the communication port that communicates with the nozzle from the extension pipe. The rods are slidable back and forth, and at the base end of each open / close rod, a pin that is constantly pressed by a spring is provided in a protruding manner.When this pin is pressed against the fixed plate, the end packing of the open / close rod is packed. Keep the communication port closed with, and when the extension pipe extends from the end of the spray pipe, the nozzle pin of the extension part comes off the fixing plate and protrudes, and the open / close rod retracts to open the communication port. Since it is configured so that not only the structure of the entire device becomes complicated and failure easily occurs, but also the above pins of all nozzles provided in the pipe part of the extension pipe that overlaps with the spray pipe are fixed. Since a state of closing the nozzle at the tip packing pressed against opening and closing rod has a problem that it is impossible to spray large amounts of asphalt solution simultaneously in a state superposed the sparge tube and the extension tube.

The present invention solves such a problem, can continuously and automatically change the spraying width according to the size of the width of the road with a simple structure, and when the width is small, double spraying is made possible It is an object of the present invention to provide an asphalt solution spraying device capable of improving the property.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the asphalt solution spraying device of the present invention comprises a left and right sub-split device which can be retracted in the longitudinal direction from the left and right end parts of the main spray pipe at the front both sides of the main spray pipe having a constant length. Distribute sprays side by side, install spray nozzles at appropriate intervals in the lengthwise direction on these main spray pipes and sub spray pipes, and open / close all open / close cocks of all spray nozzles of the main spray pipe simultaneously. In addition, the main cocks for opening and closing the spray nozzles of the left and right auxiliary spray pipes can be opened and closed simultaneously, and the auxiliary cocks that can be manually opened and closed above the main cocks of the spray nozzles of the left and right auxiliary spray pipes. And the front end portion of the operation lever of each sub cock is formed into a bifurcated opening engaging portion, and the left and right ends of the main spray pipe on the movement path of these operation levers due to the movement of the sub spray pipe in the longitudinal direction. To A pin for engaging and disengaging the opening engaging portion of the working lever is provided so as to rotate the operation lever, and when the left and right sub-dispersion tubes extend from the left and right ends of the main distribution tube, the operation lever is rotated in the opening direction. , The operation lever is configured to rotate in the closing direction when it is immersed.

[Action]

If the width of the road to be paved is large or has changed significantly, pull out the auxiliary spray pipes that are installed in parallel to the main spray pipe in accordance with the width of the main spray pipe. When they extend in the left-right extension direction, the bifurcated opening engagement part of the operating lever of the auxiliary cock that reaches the left and right ends of the main spray pipe engages with the pin protruding from the end of the main spray pipe. And the sub-cocks are sequentially rotated in the direction to open the sub-cock, and the spray nozzles arranged in the main spray pipe and the spray nozzles arranged in the sub-spray pipe portion extending in the extension direction from the main spray pipe. With the nozzle, the width to be sprayed matches the width of the road, and the asphalt solution is sprayed over the entire width of the road.

Also, if the width of the road is narrowed during paving the road or if there is an obstacle, the auxiliary spray pipe is contracted to the main spray pipe side accordingly, and it is projected on the left and right ends of the main spray pipe. The operation lever of the auxiliary cock of the auxiliary spray pipe that has reached the pin is rotated and closed by the engagement of the opening engagement portion and the pin,
Roads are paved by an asphalt solution sprayed from the nozzle of the main spray pipe and the nozzle of the auxiliary spray pipe portion extending from the end of the main spray pipe.

In this way, according to the road width, the expansion and contraction length of the auxiliary spray pipe extending from the main spray pipe in the extension direction is automatically adjusted, and at the same time the nozzle of the expanded auxiliary spray pipe is opened simultaneously for efficient operation. The road is paved.

Further, even when the left and right sub-spreading pipes are immersed in the front side of the main sprinkling pipe, the sprinkling nozzles arranged on these sub-spraying pipes can be manually opened by the operation lever of the sub-cock. Since it is possible, double spraying from the spray nozzle of the main spray pipe and the spray nozzles of the left and right sub spray pipes is possible,
Asphalt pavement work on narrow roads can be performed efficiently.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings. (1) is a hollow main distribution pipe horizontally supported by a frame (2) and having an appropriate length. Left and right sub-dispersion pipes (3) (3) having a length of one-half or a little shorter than that are arranged in series along the main distribution pipe (1).

These sub-dispersion pipes (3) and (3) are horizontal guide fittings (4) fixed to the front face of the main distribution pipe (1) as shown in FIG.
The fitting metal fittings (5) fixed to the rear surface of the main distribution pipe (1) are slidably fitted to the left and right sides of the main distribution pipe (1) from the left and right ends of the main distribution pipe (1). These are arranged side by side so that they can appear and disappear freely.

Spray nozzles (6), (6), ... (6) and (6) and (6) and (7) (7) ...
(7) are connected and communicated with each other, and these spray nozzles (6) and (7) are provided with main cocks (8) and (9) for opening and closing, and are also installed in the sub-spray pipe (3). The sprinkling nozzle (7) is provided with a sub cock (10) in the upper part of the main cock (9) in the vicinity of the connecting portion with the sub spray pipe (3).

The main cocks (8) of all the spraying nozzles (6) arranged in the main spraying pipe (1) are connected by a single operating rod (11) between the tips of their levers (8a). Operating rod (11)
Cords such as small-diameter wire ropes connected to both ends of the cable (12)
It can be opened and closed all at once by pulling from the driver's seat.

Similarly, the main cocks (9) of the respective spray nozzles (7) arranged on the auxiliary spray pipes (3) (3) also have a single operating rod (13) () between the tips of their levers (9a). 13), the cords (14) connected to both ends of the operating rods (13) (13) can be simultaneously opened and closed by pulling the cord (14) from the driver's seat or the like. The sub-cock (10) is provided with a fixed operation lever (10a) horizontally projecting upward from the sub-dispersion pipe (3) on the tip of the sub-cock (10).
The front end of 0a) is formed into a bifurcated opening engaging portion (15).

Reference numeral (16) is a pin mounting plate fixed to the upper surfaces of both ends of the main spray pipe (1), which is projected horizontally above the sub spray pipe (3) and is provided with an operating lever ( A pin (17) for engaging and disengaging the opening engaging portion (15) of the operation lever (10a) and rotating the operation lever (10a) is provided on the lower surface of the protrusion on the movement path of the operation lever (10a) so as to project downward. I am doing it.

(18) (18) are hydraulic cylinders respectively arranged above the sub-dispersion pipes (3) and (3), which are fixed on an appropriate support base (19) fixed to the main distribution pipe (1), The tip of the piston rod (18a) is connected to the upper surface of the outer end portion of the sub spray pipe (3), and the sub spray pipe (3) is operated by the operation of the hydraulic cylinder (18).
To project and retract in the length direction of the main spray pipe (1).

As shown in FIG. 4, the sub-dispersion pipes (3) and (3) have front and rear chambers (21) in which only the outer end portions communicate with each other by a vertical partition plate (20) whose inner center is arranged in the longitudinal direction. It is divided into (22), and the spray pipe nozzle (7) is communicated with the front chamber (21) thereof.

Furthermore, an asphalt solution supply pipe (23) and an intermediate communication pipe (24) are connected and communicated with the inner ends of the front and rear chambers (21) (22) of the one sub-dispersion pipe (3), respectively. An asphalt solution return pipe ((25) and an intermediate communication pipe (26) are connected to and communicate with the inner ends of the front and rear chambers (21) and (22) of the sub-dispersion pipe (3), respectively. The pipes (24) (26) are connected to both sides of the main spray pipe (1) via flexible pipes (27) (28), respectively.

The asphalt solution spraying device in the embodiment thus constructed is mounted on the rear surface of the spraying vehicle (29) via the frame (2) and the height adjusting cylinder (30) thereof as shown in FIGS. By operating the pump from the driver's seat, the tank installed in the chassis (31)
The asphalt solution in the inside is supplied to this spraying device and sprayed on the road surface.

The circulation path of the asphalt solution flows from the tank (31) side through the supply pipe (23) into one of the sub-dispersion pipes (3), flows from the front chamber (21) to the rear chamber (22), and then the middle. It flows into the main spray pipe (1) through the communication pipe (24) and the flexible pipe (27), and the other flexible pipe (28),
After flowing into the other sub-dispersion pipe (3) through the intermediate communication pipe (26) and flowing through the front and rear chambers (21) (22), the return pipe (25) flows to the tank (31) side. It has become.

When the width of the road to be sprayed is wider than the length of the main spray pipe (1), the hydraulic cylinder (18) is operated from the driver's seat so that at least one of the sub-spread pipes (3) is connected to the horizontal guide fitting (4). ) As a guide and extend toward the side of the road in the extension direction of the main spray pipe (1), the main spray pipe (1)
When the sub-spreading pipe (3) extends from the outer end of the sub-spreading pipe (3), the bifurcated opening member of the sub-cock operation lever (10a) of the spraying nozzle (7) provided in the sub-spraying pipe portion reaching that position The joint part (15) engages with the fixing pin (17) on the side of the main spray pipe (1), and the operation lever (10a) follows the movement of the sub spray pipe (3).
Rotates in the direction to open the sub cock (10) and the pin (1
When detached from 7), the auxiliary cock (10) is completely opened.

On the contrary, when the hydraulic cylinder (18) is actuated in the direction of contracting the auxiliary spray pipe (3), the auxiliary spray pipe (3) is moved from the outer end portion of the main spray pipe (1) to the main spray pipe (3). 1)
Spray nozzle (7) that has reached that position when immersed in the side
The sub cock operating lever (10a) is rotated by the pin (17) in the direction in which the sub cock (10) is closed.

When the sub cock (10) of the spray nozzle (7) is closed, even if the main cock (9) is open, the spray nozzle (7)
Asphalt solution is not sprayed from.

In this way, the sub-spreading pipe (3) is extended in the roadside direction according to the width of the road, and the spraying nozzle (6) of the main spraying pipe (1) is provided.
The spraying width by the spraying nozzle (7) arranged in the sub-spraying pipe portion extending from the main spraying pipe (1) is adjusted.

To spray the asphalt solution on the road, pull the operating rods (11) and (13) from the driver's seat or from an appropriate place to pull the operating rods (11) and (13). )
The main cocks (8) and (9) are simultaneously opened by the rotation of the respective levers (8a) and (9a), and the main spray pipe (1) flows from all the spray nozzles (6) to the above-mentioned flow path. The asphalt solution circulating in the above is sprayed, and the auxiliary spray pipe (3) is arranged in parallel with the main spray pipe (1), and the spray nozzle (7) is closed by the auxiliary cock (10). Although the main cock (9) is opened by the above, the spraying is not performed, while the spraying nozzle (7) provided in the sub-spraying pipe portion extending from the main spraying pipe (1) is as described above. Since the auxiliary cock (10) is opened sequentially when extending to
The asphalt solution is sprayed.

In this way, the subspreading pipe (3) is retracted from the main spraying pipe (1) in accordance with the road width to continuously and automatically adjust the spraying width of the asphalt solution for paving.

Also, the left and right sub-dispersion pipes (3) are provided on the front side of the main distribution pipe (1).
Even when (3) is immersed, the spraying nozzle (7) arranged in these sub-spraying pipes (3) and (3) is manually operated by operating the operation lever (10a) of the sub-cock (10). Since it can be opened by means of the spray nozzles (6) of the main spray pipe (1) and the spray nozzles (7) of the left and right sub-spray pipes (3) and (3), double spraying is possible, and it can be used on narrow roads. Asphalt pavement work can be performed efficiently.

〔The invention's effect〕

As described above, according to the asphalt solution spraying device for the asphalt spraying vehicle of the present invention, the main spraying pipe having a certain length can be projected and retracted in the longitudinal direction from the left and right ends of the main spraying pipe. Side-by-side sub-scattering is installed side by side, and spraying nozzles are arranged at appropriate intervals in the length direction of these main spraying pipes and sub-scattering pipes, and at the same time the opening / closing cocks of all the spraying nozzles of the main spreading pipes are opened / closed simultaneously. The main cocks for opening and closing the spray nozzles of the left and right auxiliary spray pipes can be opened and closed at the same time, and can be manually opened and closed above the main cock of each spray nozzle of the left and right auxiliary spray pipes. A sub cock is provided, and the tip end of the operation lever of each sub cock is formed into a bifurcated opening engaging portion, and the main dispersion on the movement path of these operation levers due to the movement of the sub distribution pipe in the longitudinal direction. Pins are provided at the left and right ends of the pipe to project and disengage from the opening engaging portion of the operating lever to rotate the operating lever. Since it is configured to rotate in the opening direction and rotate the operating lever in the closing direction when it is immersed, the main spray pipe can be changed according to the size of the width of the road to be paved and according to the change. It is possible to automatically and efficiently set the spreading width by expanding and contracting the sub-spreading pipes that are installed side by side, and even when the spreading vehicle runs on the one side portion with respect to the center of the width of the road. Accurate spraying is possible by shortening the extension length of the sub-dispersion pipe on the biased side and lengthening the extension length of the sub-dispersion pipe on the opposite side.

Furthermore, when the left and right sub-spreading pipes extend in the left-right extension direction from the left and right ends of the main spray pipe, the bifurcated opening engagement part of the operation lever of the auxiliary cock that reaches both left and right ends of the main spray pipe is the main part. Engage with a pin projecting from the end of the spray pipe and rotate sequentially in the direction to open the sub cock, and the spray nozzle arranged in the main spray pipe and the extension direction from this main spray pipe. The asphalt solution can be evenly sprayed over the entire width of the road by means of the spraying nozzle arranged in the extended sub-dispersion pipe portion.

Also, if the road width becomes narrow during paving, or if there is an obstacle, the auxiliary spray pipe can be contracted to the main spray pipe accordingly, and at this time, the left and right ends of the main spray pipe are projected. The operation lever of the auxiliary cock of the auxiliary spray pipe that has reached the pin is rotated and closed in the opposite direction to the above by the engagement of the opening engagement portion and the pin. It is possible to spray the asphalt solution accurately and smoothly with a spraying width according to the road width by an extremely simple mechanism by engaging and disengaging, and it is possible to reduce the labor of the worker and improve the work efficiency. .

Further, even when the left and right sub-spreading pipes are immersed in the front side of the main sprinkling pipe, the sprinkling nozzles arranged in these sub-spraying pipes can be manually opened by the operation lever of the sub-cock. As a result, double spraying from the spray nozzle of the main spray pipe and the spray nozzles of the left and right sub spray pipes is possible, and the asphalt pavement work on narrow roads can be performed efficiently.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a simplified front view of a half portion thereof, FIG. 2 is a plan view, FIG. 3 is a rear view, and FIG. 4 is a partially longitudinal side view. FIG. 6 is a plan view of the cock opening / closing means, and FIG. 6 is a simplified side view of the entire spray vehicle. (1) …… Main spray tube, (2) …… Frame, (3) ……
Secondary spray pipe, (6) (7) ... Spray nozzle, (8) (9)
…… Main cock, (10) …… Sub cock, (15) …… Opening engaging part, (17) …… Pin, (18) …… Hydraulic cylinder.

Claims (1)

[Claims] 1. Left and right sub-scatters which are respectively retractable in the longitudinal direction from the left and right end portions of the main main spray pipe are arranged in parallel on both sides of the front surface of the fixed main spray pipe having a constant length. Distributing nozzles are arranged at appropriate intervals in the longitudinal direction between the sub-spraying pipe and the sub-spraying pipe, and the opening / closing cocks of all the spraying nozzles of the main spraying pipe are simultaneously opened and closed at the same time. The main cocks for opening and closing can be opened and closed at the same time at the same time.Furthermore, a sub-cock that can be opened and closed manually is provided above the main cock of each spray nozzle of the left and right sub-spray tubes, and the tip of the operating lever of each sub-cock. Formed into a bifurcated opening engaging portion, and engaged with the opening engaging portion of the operating lever at both left and right ends of the main distributing pipe on the moving path of these operating levers due to the movement of the auxiliary dispersing pipe in the longitudinal direction. Take off and operate lever A pin to be rotated is provided so as to rotate the operation lever in the opening direction when the left and right sub-dispersion pipes extend from the left and right ends of the main distribution pipe, and to rotate the operation lever in the closing direction when retracted. An asphalt solution spraying device characterized by being configured.