JP7507667B2 - Rolling Machine - Google Patents

Description

The present invention relates to a rolling machine, and in particular to a rolling machine that controls the filling of the pump with priming water.

Conventionally, it has been known that rolling machines such as tire rollers are equipped with a road surface sprinkler device that sprinkles water on the paved road surface for the purposes of adjusting the moisture content of the road surface, cooling the asphalt road surface, preventing dust, etc. Such road surface sprinkler devices generally include a large-capacity self-priming pump, and the pump needs to be primed and filled with water before starting the road surface sprinkler device (for example, Patent Document 1).

Patent document 1 describes a configuration in which a priming valve is installed in a tire sprinkling piping line, the road sprinkling pump and the tire sprinkling pump are connected via a pipe connected to the priming valve, and when the road sprinkling pump and the tire sprinkling pump are in communication, the tire sprinkling pump is driven to inject priming water into the road sprinkling pump.

The priming valve described in Patent Document 1 is configured as a three-way ball valve, and has a C port connected to the discharge port of the tire sprinkler pump, an A port connected to the tire sprinkler nozzle, and a B port connected to the road sprinkler pump. In this priming valve, the C port is a common port, and the flow path within the valve is configured to switch between either the A port-C port or the B port-C port.

JP 2001-40614 A

When compaction machines such as tire rollers are stored for long periods, for example during the winter, the water in the road sprinkler pump is sometimes drained to prevent rust and freezing. Filling the road sprinkler pump with priming water is a difficult task for workers who are operating the machine for the first time or who are unfamiliar with machine operation. For example, when starting the compaction machine after long storage, there is a risk that compaction work will begin without filling the road sprinkler pump with priming water.

In addition, with rolling machines such as tire rollers, road surface watering may be performed after tire watering in order to open the road after the rolling work is completed. For this reason, for example, in the rolling vehicle described in Patent Document 1, if tire watering work is started without filling the road surface watering pump with priming water, it is necessary to temporarily halt the tire watering work, switch the port of the priming valve, and then fill the road surface watering pump with priming water, which may result in inefficient rolling work.

The present invention was made in consideration of these problems, and its purpose is to provide a rolling machine that can improve the efficiency of rolling work.

In order to achieve the above object, the present invention provides a rolling machine comprising a body, rolling rollers attached to the front and rear of the body, and a sprinkling system attached to the body and sprinkling water on the rolling roller and road surface, the sprinkling system including a water tank for storing water for sprinkling, a road sprinkling device for sprinkling water supplied from the water tank through a road sprinkling pipe onto the road surface, a road sprinkling pump arranged in the road sprinkling pipe and supplying water from the water tank to the road sprinkling device, a roller sprinkling device for sprinkling water supplied from the water tank through the roller sprinkling pipe onto the rolling roller, a roller sprinkling pump arranged in the roller sprinkling pipe and supplying water from the water tank to the roller sprinkling device, and a roller sprinkling pipe downstream of the roller sprinkling pump. The system includes a connecting pipe that branches off at the side and connects the roller sprinkler pipe and the road sprinkler pump, a valve device that can be switched to supply water in the roller sprinkler pipe to the road sprinkler pump as priming water through the connecting pipe, an operating device that transmits a road sprinkler signal that allows operation control of the road sprinkler pump and a roller sprinkler signal that allows operation control of the roller sprinkler pump based on the operation of an operator, and a control device that controls the valve device so that water is supplied from the roller sprinkler pump to the roller sprinkler device through the roller sprinkler pipe and water is supplied from the roller sprinkler pump to the road sprinkler pump through the connecting pipe as the priming water based on the road sprinkler signal and the roller sprinkler signal received from the operating device.

The rolling machine of the present invention is provided with a water sprinkling system including a valve device arranged downstream of the roller water sprinkling pump and switchable to supply water in the roller water sprinkling pipe to the road surface water sprinkling pump as priming water through the connecting pipe, an operating device that transmits a road surface water sprinkling signal that allows operation control of the road surface water sprinkling pump and a roller water sprinkling signal that allows operation control of the roller water sprinkling pump based on the operation of the operator, and a control device that controls the valve device so that water is supplied from the roller water sprinkling pump to the roller water sprinkling device through the roller water sprinkling pipe and water is supplied from the roller water sprinkling pump to the road surface water sprinkling pump through the connecting pipe based on the road surface water sprinkling signal and the roller water sprinkling signal received from the operating device. Therefore, even if rolling work such as roller water sprinkling work is started without filling the road surface water sprinkling pump with priming water, water can be supplied from the roller water sprinkling pump to the road surface water sprinkling pump through the connecting pipe while supplying water from the roller water sprinkling pump to the roller water sprinkling device through the roller water sprinkling pipe based on the operation of the operator. In other words, while performing roller watering work, the road sprinkler pump can be primed and filled at the same time. Therefore, there is no need to prime the road sprinkler pump before operating the compaction machine, and there is no need to interrupt the roller watering work to prime the road sprinkler pump, so compaction work can be carried out efficiently. Furthermore, since the road sprinkler pump can be primed and filled at any time, it is possible to avoid the road sprinkler pump running idly. This prevents damage to the pump, and there is no need to interrupt the compaction work to inspect the pump, so compaction work can be carried out efficiently.

1 is a side view showing a schematic configuration of a rolling machine according to an embodiment of the present invention. FIG. 2 is a diagram showing a schematic arrangement of equipment included in a watering system according to one embodiment of the present invention. 1 is a circuit diagram illustrating a watering system according to an embodiment of the present invention. 1A and 1B are schematic diagrams showing examples of the display of a monitor included in a sprinkler system according to one embodiment of the present invention, in which (a) shows the monitor in a completely off state, (b) shows the monitor in a completely lit state, and (c) shows the monitor in a partially lit state. 4 is a flowchart showing a part of a water sprinkling process by the water sprinkling system according to one embodiment of the present invention. 6 is a flowchart showing a part of the water sprinkling process by the water sprinkling system according to one embodiment of the present invention, which is a continuation of FIG. 5 . 6 is a flowchart showing a part of the water sprinkling process by the water sprinkling system according to one embodiment of the present invention, which is a continuation of FIG. 5 . 6 is a flowchart showing a part of the water sprinkling process by the water sprinkling system according to one embodiment of the present invention, which is a continuation of FIG. 5 . 6 is a flowchart showing a part of the water sprinkling process by the water sprinkling system according to one embodiment of the present invention, which is a continuation of FIG. 5 . 6 is a flowchart showing a part of the water sprinkling process by the water sprinkling system according to one embodiment of the present invention, which is a continuation of FIG. 5 . 1 is a circuit diagram showing an example of a sprinkling pattern of a watering system according to an embodiment of the present invention. FIG. 1 is a circuit diagram showing an example of a sprinkling pattern of a watering system according to an embodiment of the present invention. FIG. 1 is a circuit diagram showing an example of a sprinkling pattern of a watering system according to an embodiment of the present invention. FIG. 1 is a circuit diagram showing an example of a sprinkling pattern of a watering system according to an embodiment of the present invention. FIG. 1 is a circuit diagram showing an example of a sprinkling pattern of a watering system according to an embodiment of the present invention. FIG.

The following describes an embodiment of the present invention with reference to the drawings.

Figure 1 is a side view showing the schematic configuration of a rolling machine 1 according to one embodiment of the present invention. Figure 2 is a diagram showing the schematic arrangement of the equipment included in a watering system 50 according to one embodiment of the present invention. Figure 3 is a circuit diagram showing a watering system 50 according to one embodiment of the present invention. Figure 4 is a diagram showing a schematic example of a display of a monitor 71 (display device) included in a watering system 50 according to one embodiment of the present invention, where (a) shows a state in which the monitor 71 is completely off, (b) shows a state in which the monitor 71 is completely lit, and (c) shows a state in which the monitor 71 is partially lit.

For ease of explanation, "front," "rear," "left," and "right" are defined based on the traveling direction of the rolling machine 1 as seen by the operator in the driver's seat 3, and "up" and "down" are defined based on gravity. That is, the "front" and "rear" arrows shown in FIG. 1 indicate the forward and backward directions of the rolling machine 1, and the "up" and "down" arrows indicate the up and down directions of the rolling machine 1. In addition, the left and right direction of the rolling machine 1 (not shown) is the direction perpendicular to the front-to-back and up-down directions of the rolling machine 1.

As shown in Figures 1 to 3, the rolling machine 1 comprises a body 10, rolling rollers 2 attached to the front and rear of the body 10, and a water sprinkling system 50 attached to the body 10 and spraying water onto the rolling rollers 2 and the road surface.

As shown in FIG. 1, the rolling roller 2 includes a front rolling roller 2f attached to the front of the machine body 10 and a rear rolling roller 2r attached to the rear of the machine body 10. The front rolling rollers 2f and the rear rolling rollers 2r are arranged adjacent to each other in the left-right direction of the machine body 10 and also serve as the wheels of the rolling machine 1. The front rolling roller 2f is a steering wheel and can be steered by a steering wheel 4 arranged in the driver's seat 3. The rear rolling roller 2r is a driving wheel and can be operated by operating devices such as a forward/reverse switching lever and an engine speed switching switch (neither of which are shown) arranged in the driver's seat 3. In addition, a scraper 6 is assigned to the front rolling roller 2f and the rear rolling roller 2r. The scraper 6 prevents the binder of the asphalt pavement from adhering to the surfaces of the front rolling roller 2f and the rear rolling roller 2r.

The watering system 50 according to one embodiment of the present invention will be described in detail below. As shown in Figures 2 and 3, the watering system 50 includes a water tank 51, a road surface watering device 53, a road surface watering pump 55, a roller watering device 57, a roller watering pump 59, a connecting pipe 61, a valve device 63, a switch 65 as an operating device, a control device 67, a road surface watering pump sensor 69 as a sensor, and a monitor 71 as a display device. In Figure 2, the solid lines indicate the pipes through which water flows from the water tank 51, the two-dot chain lines indicate the pipes through which hydraulic oil flows from the hydraulic oil tank 80, and the dashed lines indicate the transmission paths of control signals centered on the control device 67.

The water tank 51 stores water for sprinkling and is mounted on a frame (not shown) inside the vehicle 10. As shown in FIG. 1, a road surface sprinkler 53 is disposed at the rear of the vehicle 10, and the road surface sprinkler 53 is configured to sprinkle water toward the road surface behind the vehicle 10. As shown in FIG. 3, the road surface sprinkler 53 is configured to sprinkle water supplied from the water tank 51 through the road surface sprinkler pipe 52 onto the road surface. Specifically, the road surface sprinkler 53 includes a road surface sprinkler pipe 53a connected to the tip of the road surface sprinkler pipe 52, and a road surface sprinkler opening 53b formed in the road surface sprinkler pipe 53a and discharging the water supplied from the water tank 51. The diameter of the road surface sprinkler opening 53b, the inner diameter of the road surface sprinkler pipe 53a, and the inner diameter of the road surface sprinkler pipe 52 are formed to be the same or approximately the same as each other. The road surface watering pipe 52 is positioned so that one end is submerged in the water in the water tank 51, and the other end is connected to the road surface watering pipe 53a.

3, the road surface sprinkler pump 55 is disposed in the road surface sprinkler pipe 52 and is configured to supply water from the water tank 51 to the road surface sprinkler device 53. As shown in FIG. 2, the road surface sprinkler pump 55 can be driven by a hydraulic motor 55a. The hydraulic motor 55a is driven by a supply of pressurized oil from a hydraulic pump 81. The hydraulic pump 81 is driven by an engine 82, pumps up oil stored in a hydraulic oil tank 80, and pressure-feeds the oil to the hydraulic motor 55a. The oil used by the hydraulic motor 55a is returned to the hydraulic oil tank 80. A control valve 83 is disposed downstream of the hydraulic pump 81. The control valve 83 is configured to adjust the pressure and flow rate of the oil pressure-feed from the hydraulic pump 81 based on a predetermined signal from the control device 67. When the road surface sprinkler pump 55 is driven by the hydraulic motor 55a, the road surface sprinkler pump 55 supplies water in the water tank 51 to the road surface sprinkler pipe 53a via the road surface sprinkler pipe 52, so that water is sprinkled onto the road surface from the road surface sprinkler opening 53b.

The roller water sprinkler device 57 is configured to sprinkle water supplied from the water tank 51 through the roller water sprinkler pipe 56 to the roller 2. Specifically, as shown in FIG. 1 and FIG. 3, the roller water sprinkler device 57 includes a front water sprinkler pipe 57a and a rear water sprinkler pipe 57b connected to the roller water sprinkler pipe 56, a front roller water sprinkler nozzle 57f (nozzle portion) provided on the front water sprinkler pipe 57a and assigned to the front roller 2f, and a rear roller water sprinkler nozzle 57r (nozzle portion) provided on the rear water sprinkler pipe 57b and assigned to the rear roller 2r. As shown in FIG. 3, the roller water sprinkler pipe 56 is connected to the water tank 51 at one end and to the front water sprinkler pipe 57a and the rear water sprinkler pipe 57b at the other end. The front roller watering nozzle 57f and the rear roller watering nozzle 57r are disposed near the roller surfaces of the corresponding front roller 2f and rear roller 2r, respectively, and spray water supplied from the water tank 51 toward the roller surfaces of the front roller 2f and rear roller 2r. The front roller watering nozzle 57f and the rear roller watering nozzle 57r each have an inner diameter smaller than the inner diameter of the roller watering pipe 56. In addition, the inner diameter of the roller watering pipe 56, the inner diameter of the front watering pipe 57a, and the inner diameter of the rear watering pipe 57b are formed to be the same or approximately the same as each other.

As shown in FIG. 3, the roller watering pump 59 is disposed in the roller watering pipe 56 and is configured to supply water from the water tank 51 to the roller watering device 57. As shown in FIG. 2, the roller watering pump 59 can be driven by an electric motor 59a. The electric motor 59a is configured to change the rotation speed, etc., of the roller watering pump 59 based on a signal from the control device 67. In addition, a stop valve 73 is disposed upstream of the roller watering pump 59 in the roller watering pipe 56, and a filter 75 is disposed downstream of the roller watering pump 59. The stop valve 73 opens and closes the roller watering pipe 56 based on a predetermined signal from the control device 67, and controls the flow of water from the water tank 51. The filter 75 filters the water pumped by the roller watering pump 59 to remove foreign matter mixed in the water and supply clean water to the valve device 63 described later.

As shown in FIG. 3, the connecting pipe 61 is a pipe that branches off downstream of the roller sprinkler pump 59 from the roller sprinkler pipe 56 and connects the roller sprinkler pipe 56 to the road sprinkler pump 55. A check valve 77 is disposed in the connecting pipe 61, and this check valve 77 allows water to flow only from the roller sprinkler pipe 56 toward the road sprinkler pump 55 and prevents reverse flow. The supply of water to the road sprinkler pump 55 via the connecting pipe 61 will be described later.

As shown in FIG. 3, the valve device 63 is a so-called 3-port 4-position solenoid valve, and is disposed at the branch point between the roller sprinkler pipe 56 downstream of the roller sprinkler pump 59 and the connecting pipe 61, and is configured to be switchable so as to supply the water in the roller sprinkler pipe 56 to the road surface sprinkler pump 55 as priming water via the connecting pipe 61. The valve device 63 is configured to be switchable between a first switching position A, a second switching position B, a third switching position C, and a fourth switching position D based on a predetermined signal from the control device 67.

The first switching position A of the valve device 63 is a switching position that blocks the roller sprinkler pipe 56 and also blocks the connection between the roller sprinkler pipe 56 and the connecting pipe 61 (Figure 3). Therefore, in the first switching position A, water from the water tank 51 is not supplied to the roller sprinkler device 57 through the roller sprinkler pipe 56, and is not supplied to the road surface sprinkler pump 55 through the connecting pipe 61. The second switching position B of the valve device 63 is a switching position that allows water to be supplied to the roller sprinkler device 57 through the roller sprinkler pipe 56 and blocks the connection between the roller sprinkler pipe 56 and the connecting pipe 61. Therefore, in the second switching position B, water from the water tank 51 is supplied to the roller sprinkler device 57 through the roller sprinkler pipe 56, but is not supplied to the road surface sprinkler pump 55 through the connecting pipe 61 (Figure 11). The third switching position C of the valve device 63 is a switching position that blocks the roller sprinkler pipe 56 and allows water to be supplied to the road sprinkler pump 55 via the connecting pipe 61. Therefore, in the third switching position C, water from the water tank 51 is supplied to the road sprinkler pump 55 via the connecting pipe 61, but is not supplied to the roller sprinkler device 57 via the roller sprinkler pipe 56 (FIG. 12). The fourth switching position D of the valve device 63 is a switching position that allows water to be supplied to the roller sprinkler device 57 via the roller sprinkler pipe 56 and also allows water to be supplied to the road sprinkler pump 55 via the connecting pipe 61. Therefore, in the fourth switching position D, water from the water tank 51 is supplied to the roller sprinkler device 57 via the roller sprinkler pipe 56 and is also supplied to the road sprinkler pump 55 via the connecting pipe 61 (FIG. 14).

As shown in FIG. 3, the valve device 63 includes a throttle conduit 63a that connects the roller watering conduit 56 and the connection conduit 61 in the fourth switching position D. The throttle conduit 63a is a conduit whose inner diameter is narrowed, for example, by placing an orifice plate, and has an inner diameter smaller than the inner diameter of the roller watering conduit 56. In addition, the inner diameter of the throttle conduit 63a is the same or approximately the same as the inner diameters of the front roller watering nozzle 57f and the rear roller watering nozzle 57r.

The switch 65 is a dial-type operating device disposed in the driver's seat 3, and includes a road surface watering switch 65a that starts road surface watering processing, and a roller watering switch 65b that starts roller watering processing (Figure 2). The switch 65 is configured to transmit, based on the operator's operation, a road surface watering signal that permits operation control of the road surface watering pump 55, and a roller watering signal that permits operation control of the roller watering pump 59, to the control device 67. The watering processing centered on the control device 67, based on the operation of the road surface watering switch 65a and the roller watering switch 65b, will be described later.

The road sprinkler pump sensor 69 is attached to the road sprinkler pump 55 and is configured to detect the presence or absence of water in the road sprinkler pump 55 and transmit a signal according to the detection result to the control device 67. For example, the road sprinkler pump sensor 69 is a float-type level sensor in which a float moves up and down due to the principle of buoyancy, and a reed switch is operated by a magnet in the float to output a detection signal. The road sprinkler pump sensor 69 may be of other types such as ultrasonic type, pressure type, etc. Also, a water tank sensor 70 may be attached to the water tank 51. The water tank sensor 70 is configured to detect the presence or absence of water in the water tank 51 and transmit a signal according to the detection result to the control device 67. The water tank sensor 70 may be of float type, ultrasonic type, pressure type, etc., like the road sprinkler pump sensor 69.

As shown in FIG. 4, the monitor 71 is provided in the driver's seat 3 and is configured to display the operating state of the sprinkler system 50 to the operator. Specifically, the monitor 71 is configured to display the operating states of the road sprinkler pump 55 and the roller sprinkler pump 59 based on a predetermined signal transmitted from the control device 67. More specifically, when the road sprinkler switch 65a is switched on by the operator's operation of the switch 65, the monitor 71 is configured to display either "road sprinkler" (partially lit in FIG. 4(c)) as a drive indication of the road sprinkler pump 55 or "priming water filling" (not shown) as a priming water filling indication for the road sprinkler pump 55 based on a predetermined signal from the control device 67. In addition, when the roller sprinkler switch 65b is switched on by the operator's operation of the switch 65, the monitor 71 is configured to display "roller sprinkler" as a drive indication of the roller sprinkler pump 59 based on a predetermined signal from the control device 67 (not shown). Furthermore, the monitor 71 is configured to display all of "road surface watering", "roller watering", and "priming water filling" based on a signal from the control device 67 in response to the operation of the switch 65 by the worker (all on in FIG. 4B). The monitor 71 is also configured to not display any of "road surface watering", "roller watering", and "priming water filling" when the switch 65 is not operated by the worker (all off in FIG. 4A). The monitor 71 may be configured to display "road surface watering" and "roller watering", "roller watering" and "priming water filling", or "road surface watering" and "priming water filling" based on a signal from the control device 67 in response to the operation of the switch 65 by the worker. Specific display control of the monitor 71 by the control device 67 will be described later.

As shown in FIG. 2, the control device 67 is configured to control the operation of the hydraulic motor 55a, i.e., the operation of the road surface sprinkler pump 55, via the control valve 83, and to control the operation of the roller sprinkler pump 59 via the electric motor 59a. The control device 67 is also configured to control the operation of the valve device 63 and the operation of the stop valve 73. The control device 67 is a computer equipped with, for example, a CPU, RAM, ROM, etc., and reads out programs corresponding to each functional element, such as a receiving unit, a processing unit, a transmitting unit, and a memory unit, from the ROM, loads them into the RAM, and causes the processing unit (CPU) to execute processing corresponding to each functional element.

When the control device 67 determines that there is no water in the water tank 51 based on a predetermined signal received from the water tank sensor 70, it is configured to store the determination result as "water tank error information". The control device 67 is also configured to store error information in the compaction machine 1 (hereinafter referred to as "error flag"). Equipment errors include, for example, a malfunction of the water tank 51, a malfunction of the road sprinkler pump 55, a malfunction of the roller sprinkler pump 59, a malfunction of the stop valve 73, a malfunction of the valve device 63, a malfunction of the monitor 71, etc.

2, the control device 67 controls the valve device 63 so that water is supplied from the roller sprinkler pump 59 to the roller sprinkler device 57 through the roller sprinkler pipe 56 and water is supplied from the roller sprinkler pump 59 to the road sprinkler pump 55 through the connecting pipe 61 based on the road sprinkler signal received from the road sprinkler switch 65a and the roller sprinkler signal received from the roller sprinkler switch 65b. In this case, as shown in FIG. 14, the valve device 63 is switched to the fourth switching position D by the control device 67. Also, when the control device 67 determines that there is no water in the road sprinkler pump 55 based on the signal received from the road sprinkler pump sensor 69, it controls the valve device 63 so that water is supplied from the roller sprinkler pump 59 to the road sprinkler pump 55 through the connecting pipe 61. In this case, as shown in FIG. 12 and FIG. 14, the valve device 63 is switched to the third switching position C or the fourth switching position D by the control device 67. In addition, the control device 67 controls the monitor 71 to display at least one of "road sprinkling" as an indication of the driving of the road sprinkling pump 55 and "priming water filling" as an indication of the filling of priming water to the road sprinkling pump 55 based on the road sprinkling signal received from the road sprinkling switch 65a. In addition, the control device 67 controls the monitor 71 to display "roller sprinkling" as an indication of the driving of the roller sprinkling pump 59 based on the roller sprinkling signal received from the roller sprinkling switch 65b. The control of the valve device 63 and the monitor 71 by the control device 67 is part of the sprinkling process by the sprinkling system 50, and the specific sprinkling process centered on the control device 67 will be described later.

Next, the water sprinkling process by the water sprinkling system 50 will be described with reference to Figures 5 to 15. Figure 5 is a flowchart showing a part of the water sprinkling process by the water sprinkling system 50 according to one embodiment of the present invention. Figures 6 to 10 are flowcharts showing a part of the water sprinkling process by the water sprinkling system 50 according to one embodiment of the present invention, and are a continuation of Figure 5. Figures 11 to 15 are circuit diagrams showing an example of a water sprinkling pattern by the water sprinkling system 50 according to one embodiment of the present invention.

The control device 67 starts the water sprinkling process by receiving a signal that the ignition switch (not shown) of the compaction machine 1 has been turned on (START). First, the control device 67 judges whether an error flag has been stored in the control device 67 (not shown). As a result, if the control device 67 judges that an error flag has not been stored, the control device 67 judges whether the road surface water sprinkling switch 65a has been switched on (S100). If the control device 67 judges that an error flag has been stored, the control device 67 judges whether the water tank error information has been stored in the control device 67 (not shown). As a result, if the control device 67 judges that the water tank error information has not been stored, the control device 67 judges whether the road surface water sprinkling switch 65a has been switched on (S100). If the control device 67 judges that the water tank error information has been stored, the water sprinkling process returns to START.

As shown in FIG. 5, the control device 67 judges whether the road surface watering switch 65a is switched ON or not (S100). If the control device 67 judges that the road surface watering switch 65a is not switched ON, i.e., that the road surface watering signal has not been received from the road surface watering switch 65a (No in S100), the control device 67 judges that the operator has no intention of performing road surface watering and stores the road surface watering flag OFF information (S110). Here, storing the road surface watering flag OFF information means that the result that the road surface watering signal has not been received from the road surface watering switch 65a is temporarily stored in the control device 67. Next, the control device 67 performs control to turn off the road surface watering pump 55 based on the road surface watering flag OFF information, i.e., control to stop the hydraulic motor 55a via the control valve 83 (S120).

Next, the control device 67 judges whether the roller watering switch 65b is switched ON (S130). If the control device 67 judges that the roller watering switch 65b is not switched ON, that is, that the roller watering signal has not been received from the roller watering switch 65b (No in S130), as shown in FIG. 6, the control device 67 judges that the worker has no intention of performing roller watering and stores the roller watering flag OFF information (S140). Here, storing the roller watering flag OFF information means that the result that the roller watering signal has not been received from the roller watering switch 65b is temporarily stored in the control device 67. Next, the control device 67 controls the stop valve 73 to be OFF, the valve device 63 to be OFF, the roller watering pump 59 to be OFF, the road surface watering pump 55 to be OFF, and the monitor 71 to be OFF (S150). Specifically, the control device 67 performs control to close the stop valve 73, control to switch the valve device 63 to the first switching position A, control to stop the electric motor 59a, control to stop the hydraulic motor 55a via the control valve 83, and control to hide the monitor 71. After that, the watering process returns to the start.

When the control device 67 determines that the roller watering switch 65b is switched ON, i.e., that a roller watering signal has been received from the roller watering switch 65b (Yes in S130), the control device 67 determines that the operator intends to perform roller watering, and stores the roller watering flag ON information (S160). Here, storing the roller watering flag ON information means that the result that a roller watering signal has been received from the roller watering switch 65b is temporarily saved in the control device 67. The watering process then proceeds to S250, which will be described later.

When the control device 67 determines that the road surface watering switch 65a is switched ON, i.e., that a road surface watering signal has been received from the road surface watering switch 65a (Yes in S100), the control device 67 determines that the operator intends to water the road surface, and stores the road surface watering flag ON information (S170). Here, storing the road surface watering flag ON information means that the result of receiving the road surface watering signal from the road surface watering switch 65a is temporarily saved in the control device 67.

Next, the control device 67 judges whether the roller watering switch 65b is switched ON (S180). If the control device 67 judges that the roller watering switch 65b is not switched ON, i.e., that the control device 67 has not received a roller watering signal from the roller watering switch 65b (No in S180), the control device 67 judges that the operator has no intention of performing roller watering and stores roller watering flag OFF information (S190). Next, the control device 67 controls the stop valve 73 to be turned OFF, the valve device 63 to be turned OFF, and the roller watering pump 59 to be turned OFF based on the roller watering flag OFF information (S200). Specifically, the control device 67 controls the stop valve 73 to be closed, the valve device 63 to be switched to the first switching position A, and the electric motor 59a to be stopped. The watering process then proceeds to S220, which will be described later.

If the control device 67 determines that the roller watering switch 65b is switched ON, i.e., that a roller watering signal has been received from the roller watering switch 65b (Yes in S180), the control device 67 determines that the operator intends to perform roller watering and stores the roller watering flag ON information (S210).

Next, the control device 67 judges whether water is present in the road surface watering pump 55 based on the signal received from the road surface watering pump sensor 69 (S220). For example, the control device 67 calculates the water height in the road surface watering pump 55 based on the signal received from the road surface watering pump sensor 69, and judges that water is present in the road surface watering pump 55 if the calculated water height is higher than a threshold value pre-stored in the control device 67. If the calculated water height is lower than the threshold value, the control device 67 judges that water is not present in the road surface watering pump 55. As a result, if the control device 67 judges that water is not present in the road surface watering pump 55, that is, the calculated water height is lower than the threshold value (No in S220), the control device 67 judges that it is necessary to fill the road surface watering pump 55 with priming water, and stores the priming flag ON information (S230). Here, storing the priming flag ON information means that the result of determining that priming water needs to be filled into the road surface sprinkler pump 55 is temporarily stored in the control device 67. After that, the sprinkler process proceeds to S250, which will be described later.

When the control device 67 determines that water is present in the road surface watering pump 55, i.e., that the calculated water level is higher than the threshold value (Yes in S220), the control device 67 determines that it is not necessary to fill the road surface watering pump 55 with priming water, and stores the priming flag OFF information (S240). Here, storing the priming flag OFF information means that the control device 67 temporarily saves the result that it has been determined that it is not necessary to fill the road surface watering pump 55 with priming water.

Next, the control device 67 judges whether the road surface watering flag ON information is stored in the control device 67 (S250). If the control device 67 judges that the road surface watering flag ON information is not stored, that is, that the road surface watering flag OFF information is stored (No in S250), the control device 67 judges that the operator intends to perform roller watering, and as shown in FIG. 7, controls to turn on the stop valve 73, control to turn on the valve device 63, control to turn on the roller watering pump 59, and control to turn on the monitor 71 (S260). Specifically, as shown in FIG. 11, the control device 67 controls to open the stop valve 73, control to switch the valve device 63 to the second switching position B, control to drive the roller watering pump 59 via the electric motor 59a, and control to display "roller watering" on the monitor 71.

Next, the control device 67 determines whether the process of S260 is being performed as instructed, i.e., whether the stop valve 73 is open, whether the valve device 63 is switched to the second switching position B, whether the roller watering pump 59 is being driven via the electric motor 59a, and whether "roller watering" is being displayed on the monitor 71 (S270). As a result, if the control device 67 determines that the process of S260 is not being performed as instructed (No in S270), the control device 67 increments the cumulative number of warnings since the start of the watering process by +1 and stores the cumulative number of warnings information (S280).

Next, the control device 67 judges whether the cumulative warning count is smaller than a threshold value previously stored in the control device 67 (S290). If the control device 67 judges that the cumulative warning count is not smaller than the threshold value, i.e., is greater than the threshold value (No in S290), the control device 67 judges that it is necessary to stop the watering process and stores error flag ON information (S300). Here, the error flag ON information means that, for example, a result that a malfunction has been found in the road surface watering pump 55 or the like is temporarily stored in the control device 67. Then, based on the error flag ON information, the control device 67 controls to turn off the stop valve 73, the valve device 63, the roller watering pump 59, the road surface watering pump 55, and the monitor 71 (S310). Specifically, the control device 67 performs control to close the stop valve 73, control to switch the valve device 63 to the first switching position A, control to stop the electric motor 59a, control to stop the hydraulic motor 55a via the control valve 83, and control to hide the monitor 71. After that, the watering process returns to the start.

If the control device 67 determines that the cumulative number of warnings is less than the pre-stored threshold (Yes in S290), the control device 67 determines that there is no need to stop the watering process. The watering process then returns to the start.

When the control device 67 determines that the process of S260 has been performed as instructed (Yes in S270), the control device 67 performs control to reset the cumulative number of warnings and control to overwrite the error flag ON information stored in the control device 67 with the error flag OFF (S320). As a result, the control device 67 performs roller watering processing based on the process of S260, and as shown in FIG. 11, water from the water tank 51 is supplied to the compaction roller 2 through the stop valve 73, roller watering pump 59, filter 75, valve device 63 (second switching position B), and roller watering device 57. The watering processing then returns to the start.

When the control device 67 determines that the road surface watering flag ON information is stored (Yes in S250), the control device 67 determines whether or not the roller watering flag ON information is stored in the control device 67 (S330). As a result, when the control device 67 determines that the roller watering flag ON information is not stored, that is, the roller watering flag OFF information is stored (No in S330), the control device 67 determines that the worker intends to water the road surface, and as shown in FIG. 8, determines whether or not the priming flag ON information is stored in the control device 67 (S340).

As a result, if the control device 67 determines that the priming flag ON information is not stored, i.e., that the priming flag OFF information is stored (No in S340), the control device 67 determines that it is not necessary to fill the road surface watering pump 55 with priming water before watering the road surface, and controls the road surface watering pump 55 to turn ON and the monitor 71 to turn ON (S350). Specifically, the control device 67 controls the hydraulic motor 55a to be driven via the control valve 83, and controls the monitor 71 to display "road surface watering". At this time, the control device 67 controls the valve device 63 to be switched to the first switching position A.

Next, the control device 67 determines whether the process of S350 is being performed as instructed, i.e., whether the hydraulic motor 55a is being driven via the control valve 83, and whether "roller watering" is being displayed on the monitor 71 (S360). As a result, if the control device 67 determines that the process of S350 is not being performed as instructed (No in S360), the control device 67 turns off the road surface watering pump 55, i.e., controls the hydraulic motor 55a to stop via the control valve 83 (S370). The watering process then returns to the start.

When the control device 67 determines that the processing of S350 has been performed as instructed (Yes in S360), the control device 67 performs road surface watering processing based on the processing of S350, and as shown in FIG. 13, water from the water tank 51 is supplied to the road surface via the road surface watering pump 55 and the road surface watering device 53. After that, the watering processing returns to the start.

When the control device 67 determines that the priming flag ON information is stored (Yes in S340), the control device 67 determines that it is necessary to fill the road sprinkler pump 55 with priming water before sprinkling the road surface, and as shown in FIG. 8, controls to turn on the stop valve 73, control to turn on the valve device 63, control to turn on the roller sprinkler pump 59, and control to turn on the monitor 71 (S400). Specifically, as shown in FIG. 12, the control device 67 controls to open the stop valve 73, control to switch the valve device 63 to the third switching position C, control to drive the roller sprinkler pump 59 via the electric motor 59a, and control to display "priming water filled" on the monitor 71.

Next, the control device 67 determines whether the process of S400 is being performed as instructed, i.e., whether the stop valve 73 is open, whether the valve device 63 is switched to the third switching position C, whether the roller watering pump 59 is being driven via the electric motor 59a, and whether the "priming water filling" message is being displayed on the monitor 71 (S410). As a result, if the control device 67 determines that the process of S400 is not being performed as instructed (No in S410), the control device 67 increments the cumulative number of warnings since the start of the watering process by +1 and stores the cumulative warning information (S420).

Next, the control device 67 judges whether the cumulative warning count is smaller than a threshold value previously stored in the control device 67 (S430). If the control device 67 judges that the cumulative warning count is not smaller than the threshold value, i.e., is greater than the threshold value (No in S430), the control device 67 judges that it is necessary to stop the watering process and stores error flag ON information (S440). Then, based on the error flag ON information, the control device 67 controls to turn off the stop valve 73, turn off the valve device 63, turn off the roller watering pump 59, turn off the road surface watering pump 55, and turn off the monitor 71 (S450). Specifically, the control device 67 controls to close the stop valve 73, switch the valve device 63 to the first switching position A, stop the electric motor 59a, stop the hydraulic motor 55a via the control valve 83, and hide the monitor 71. After that, the watering process returns to the start.

If the control device 67 determines that the cumulative number of warnings is less than the pre-stored threshold (Yes in S430), the control device 67 determines that there is no need to stop the watering process. The watering process then returns to the start.

When the control device 67 determines that the process of S400 is being executed as instructed (Yes in S410), the control device 67 performs control to reset the cumulative number of warnings and control to overwrite the error flag ON information stored in the control device 67 with error flag OFF information (S460). As a result, the control device 67 performs a priming water filling process based on the process of S400, and as shown in FIG. 12, water from the water tank 51 is supplied to the road surface watering pump 55 through the stop valve 73, roller watering pump 59, filter 75, valve device 63 (third switching position C), and connecting pipe 61. The watering process then returns to the start.

If the control device 67 determines that the roller water sprinkling flag ON information is stored (Yes in S330), the control device 67 determines whether the priming flag ON information is stored in the control device 67 (S470). As a result, if the control device 67 determines that the priming flag ON information is not stored, that is, the priming flag OFF information is stored (No in S470), the control device 67 determines that it is possible to perform road watering without filling the road water sprinkling pump 55 with priming water and to perform roller watering at the same time, and controls the stop valve 73 to turn ON, the valve device 63 to turn ON, the roller water sprinkling pump 59 to turn ON, and the monitor 71 to turn ON (S480). Specifically, the control device 67 performs control to open the stop valve 73, control to switch the valve device 63 to the second switching position B, control to drive the roller watering pump 59 via the electric motor 59a, and control to display "Road watering" and "Roller watering" on the monitor 71.

Next, the control device 67 determines whether the processing of S480 is being executed as instructed, i.e., whether the stop valve 73 is open, whether the valve device 63 is switched to the second switching position B, whether the roller watering pump 59 is being driven via the electric motor 59a, and whether the monitor 71 is displaying "road surface watering" and "roller watering" (S490).

As a result, if the control device 67 determines that the processing of S480 has not been performed as instructed (No in S490), the control device 67 determines that roller watering cannot be performed and controls the road surface watering pump 55 to turn ON (S500). Specifically, the control device 67 controls the driving of the hydraulic motor 55a via the control valve 83. Next, the control device 67 determines whether the processing of S500 has been performed as instructed, i.e., whether the hydraulic motor 55a has been driven via the control valve 83 (S510).

As a result, if the control device 67 determines that the processing of S500 has not been performed as instructed (No in S510), the control device 67 determines that roller watering and road surface watering cannot be performed, increments the cumulative number of warnings since the start of the watering process by +1, and stores the cumulative number of warnings information (S520).

Next, the control device 67 judges whether the cumulative warning count is smaller than a threshold value previously stored in the control device 67 (S530). If the control device 67 judges that the cumulative warning count is not smaller than the threshold value, i.e., is greater than the threshold value (No in S530), the control device 67 judges that it is necessary to stop the watering process and stores error flag ON information (S540). Then, based on the error flag ON information, the control device 67 controls to turn off the stop valve 73, turn off the valve device 63, turn off the roller watering pump 59, turn off the road surface watering pump 55, and turn off the monitor 71 (S550). Specifically, the control device 67 controls to close the stop valve 73, switch the valve device 63 to the first switching position A, stop the electric motor 59a, stop the hydraulic motor 55a via the control valve 83, and hide the monitor 71. The watering process then returns to the start.

If the control device 67 determines that the cumulative number of warnings is less than the pre-stored threshold (Yes in S530), the control device 67 determines that there is no need to stop the watering process. The watering process then returns to the start.

If the control device 67 determines that the processing of S500 has been performed as instructed (Yes in S510), the control device 67 determines that although roller watering cannot be performed, road watering can be performed, and controls the stop valve 73 to be turned OFF, the valve device 63 to be turned OFF, the roller watering pump 59 to be turned OFF, and the monitor 71 to be turned ON (S560). Specifically, the control device 67 controls the road watering pump 55 to be turned ON, i.e., controls the hydraulic motor 55a to be driven via the control valve 83, while controlling the monitor 71 to display "Road watering". The watering process then returns to the start.

When the control device 67 determines that the process of S480 has been performed as instructed (Yes in S490), the control device 67 controls the road surface sprinkler pump 55 to turn ON (S580). Specifically, the control device 67 controls the driving of the hydraulic motor 55a via the control valve 83. Next, the control device 67 determines whether the process of S580 has been performed as instructed, i.e., whether the hydraulic motor 55a has been driven via the control valve 83 (S590).

As a result, if the control device 67 determines that the processing of S580 has not been performed as instructed (No in S590), the control device 67 determines that roller watering can be performed but road watering cannot be performed, and controls the road watering pump 55 to be turned OFF and the monitor 71 to be turned ON. Specifically, the control device 67 controls the opening of the stop valve 73, the switching of the valve device 63 to the second switching position B, the driving of the roller watering pump 59 via the electric motor 59a, and the display of "Roller watering" on the monitor 71, while controlling the stopping of the hydraulic motor 55a via the control valve 83 (S600). The watering process then returns to start.

When the control device 67 determines that the process of S580 is being performed as instructed (Yes in S590), the control device 67 resets the cumulative number of warnings since the start of the water sprinkling process, and performs control to overwrite the error flag ON information stored in the control device 67 with error flag OFF information (S620). As a result, the control device 67 performs road surface sprinkling and roller sprinkling based on the processes of S480 and S580, and as shown in FIG. 15, water from the water tank 51 is supplied to the road surface through the road surface sprinkling pump 55 and road surface sprinkling device 53, and is also supplied to the compaction roller 2 through the stop valve 73, roller sprinkling pump 59, filter 75, valve device 63 (second switching position B), and roller sprinkling device 57. The water sprinkling process then returns to the start.

If the control device 67 determines that the priming flag ON information is stored (Yes in S470), the control device 67 determines that it is necessary to fill the road surface sprinkler pump 55 with priming water while performing roller sprinkling, and controls the stop valve 73 to be turned ON, the valve device 63 to be turned ON, the roller sprinkler pump 59 to be turned ON, and the monitor 71 to be turned ON (S630). Specifically, the control device 67 controls to open the stop valve 73, to switch the valve device 63 to the fourth switching position D, to drive the roller sprinkler pump 59 via the electric motor 59a, and to display "Roller sprinkling" and "Filling priming water" on the monitor 71. Next, the control device 67 determines whether the process of S630 is being executed as instructed, i.e., whether the stop valve 73 is open, whether the valve device 63 is switched to the fourth switching position D, whether the roller watering pump 59 is being driven via the electric motor 59a, and whether roller watering and priming are being displayed on the monitor 71 (S640).

As a result, if the control device 67 determines that the process of S630 has not been performed as instructed (No in S640), the control device 67 increments the cumulative number of warnings since the start of the watering process by +1 and stores the cumulative number of warnings information (S650).

Next, the control device 67 judges whether the cumulative warning count is smaller than a threshold value previously stored in the control device 67 (S660). If the control device 67 judges that the cumulative warning count is not smaller than the threshold value, i.e., is greater than the threshold value (No in S660), the control device 67 judges that it is necessary to stop the watering process and stores error flag ON information (S670). Then, based on the error flag ON information, the control device 67 controls to turn off the stop valve 73, turn off the valve device 63, turn off the roller watering pump 59, turn off the road surface watering pump 55, and turn off the monitor 71 (S680). Specifically, the control device 67 controls to close the stop valve 73, switch the valve device 63 to the first switching position A, stop the electric motor 59a, stop the hydraulic motor 55a via the control valve 83, and hide the monitor 71. After that, the watering process returns to the start.

If the control device 67 determines that the cumulative number of warnings is less than the pre-stored threshold (Yes in S660), the control device 67 determines that there is no need to stop the watering process. The watering process then returns to the start.

When the control device 67 determines that the process of S630 has been executed as instructed (Yes in S640), the control device 67 performs control to reset the cumulative number of warnings and control to overwrite the error flag ON information stored in the control device 67 with the error flag OFF (S690). As a result, the control device 67 performs roller watering processing based on the process of S630, and as shown in FIG. 14, water from the water tank 51 is supplied to the compaction roller 2 through the stop valve 73, roller watering pump 59, filter 75, valve device 63 (fourth switching position D), and roller watering device 57, and is also supplied to the road surface watering pump 55 through the valve device 63 (fourth switching position D) and connecting pipe 61. The watering process then returns to the start.

Next, we will explain the operation and effects of the rolling machine 1 according to an embodiment of the present invention.

The rolling machine 1 according to the embodiment of the present invention is provided with a water sprinkling system 50 including a valve device 63 arranged downstream of the roller water sprinkling pump 59 and switchable to supply water in the roller water sprinkling pipe 56 to the road surface water sprinkling pump 55 via the connecting pipe 61, a switch 65 that transmits a road surface water sprinkling signal that allows operation control of the road surface water sprinkling pump 55 and a roller water sprinkling signal that allows operation control of the roller water sprinkling pump 59 based on the operation of the operator, and a control device 67 that controls the valve device 63 so that water is supplied to the roller water sprinkling device 57 via the roller water sprinkling pipe 56 and to the road surface water sprinkling pump 55 via the connecting pipe 61 based on the road surface water sprinkling signal and the roller water sprinkling signal received from the switch 65. Therefore, even if a rolling work such as a roller water sprinkling work is started without filling the road surface water sprinkling pump 55 with priming water, water can be supplied to the road surface water sprinkling pump 55 via the connecting pipe 61 while supplying water to the roller water sprinkling device 57 via the roller water sprinkling pipe 56 based on the operation of the operator. In other words, while performing roller watering work, the road surface watering pump 55 can be primed and filled at the same time. Therefore, there is no need to prime the road surface watering pump 55 before operating the compaction machine 1, and there is no need to interrupt the roller watering work to prime the road surface watering pump 55, so the compaction work can be carried out efficiently. Furthermore, since the road surface watering pump 55 can be primed and filled at any time, it is possible to avoid the road surface watering pump 55 running idly. This prevents damage to the pump 55, and there is no need to interrupt the compaction work to inspect the pump 55, so the compaction work can be carried out efficiently.

Furthermore, according to the rolling machine 1 of the embodiment of the present invention, when the control device 67 determines that there is no water in the road sprinkler pump 55 based on a signal received from the road sprinkler pump sensor 69, it controls the valve device 63 so that water is supplied to the road sprinkler pump 55 via the connecting pipe 61. In this way, the control device 67 determines whether or not it is necessary to fill the road sprinkler pump 55 with priming water based on the signal received from the road sprinkler pump sensor 69, so that the road sprinkler pump 55 can be prevented from running idly. This prevents damage to the pump 55, eliminates the need to interrupt the rolling work to inspect the pump 55, and allows the rolling work to be carried out efficiently.

In addition, according to the rolling machine 1 of the embodiment of the present invention, the control device 67 controls the monitor 71 to display at least one of "road sprinkling" and "priming water filling" as a driving indication of the road sprinkling pump based on the road sprinkling signal received from the road sprinkling switch 65a. Also, the control device 67 controls the monitor 71 to display "roller sprinkling" as a driving indication of the roller sprinkling pump 59 based on the roller sprinkling signal received from the roller sprinkling switch 65b. This allows the worker to reliably recognize the operating state of the road sprinkling pump 55 and the roller sprinkling pump 59 in response to the operation of the switch 65 (road sprinkling switch 65a and roller sprinkling switch 65b), and the rolling work by the rolling machine 1 can be efficiently performed without deviating from the procedure.

Furthermore, in the rolling machine 1 according to the embodiment of the present invention, the roller watering device 57 includes a front roller watering nozzle 57f and a rear roller watering nozzle 57r that spray water supplied from the water tank 51 onto the front roller 2f and the rear roller 2r, and the front roller watering nozzle 57f and the rear roller watering nozzle 57r have an inner diameter smaller than the inner diameter of the roller watering pipe 56. Furthermore, the valve device 63 includes a throttle pipe 63a that connects the roller watering pipe 56 and the connection pipe 61, and the throttle pipe 63a has an inner diameter smaller than the inner diameter of the roller watering pipe 56. Therefore, when the valve device 63 is switched to the fourth switching position D, resistance to the flow of water from the water tank 51 can be provided in both the path to the front roller sprinkler nozzle 57f and the rear roller sprinkler nozzle 57r via the roller sprinkler pipe 56 and the flow path to the road sprinkler pump 55 via the connection pipe 61. This makes it possible to avoid water being supplied to only one of the roller sprinkler device 57 and the road sprinkler pump 55, allowing the roller sprinkler operation and the priming water filling operation to the road sprinkler pump 55 to be performed efficiently.

In addition, according to the rolling machine 1 of the embodiment of the present invention, the inner diameter of the front roller watering nozzle 57f and the rear roller watering nozzle 57r is the same as the inner diameter of the throttle pipe 63a. Therefore, when the valve device 63 is switched to the fourth switching position D, the internal pressure of both the path to the front roller watering nozzle 57f and the rear roller watering nozzle 57r via the roller watering pipe 56 and the flow path to the road surface watering pump 55 via the connecting pipe 61 can be made equal, and thus an equal amount of water can be flowed to both the roller watering device 57 and the road surface watering pump 55, and the roller watering operation and the priming water filling operation for the road surface watering pump 55 can be performed efficiently.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the rolling machine 1 according to the above embodiment, but includes all aspects included in the concept of the present invention and the scope of the claims. In addition, each configuration may be appropriately and selectively combined to achieve the above-mentioned problems and effects. For example, the shape, material, arrangement, size, etc. of each component in the above embodiment may be appropriately changed depending on the specific aspect of the present invention.

For example, in this embodiment, it has been described that "road surface watering," "roller watering," and "priming water filling" are displayed in text on the monitor 71, but this information may also be displayed in graphics on the monitor 71.

REFERENCE SIGNS LIST 1 rolling machine 2 rolling roller 10 machine body 50 sprinkling system 51 water tank 52 road surface sprinkling pipe 53 road surface sprinkling device 55 road surface sprinkling pump 56 roller sprinkling pipe 57 roller sprinkling device 57f front roller sprinkling nozzle 57r rear roller sprinkling nozzle 59 roller sprinkling pump 61 connecting pipe 63 valve device 63a throttle pipe 65 switch (operating device)
67 Control device 69 Road surface sprinkler pump sensor (sensor)
71 Monitor (display device)

Claims (5)

The aircraft and
a rolling roller attached to each of the front and rear of the body;
A water sprinkling system attached to the body and configured to sprinkle water on the rolling roller and a road surface,
The watering system includes:
A water tank for storing water for watering;
A road surface sprinkling device that sprinkles water supplied from the water tank through a road surface sprinkling pipe onto the road surface;
A road sprinkling pump is disposed in the road sprinkling pipeline and supplies water from the water tank to the road sprinkling device;
a roller water sprinkler device that sprinkles water supplied from the water tank through a roller water sprinkler pipe onto the rolling roller;
a roller water sprinkling pump arranged in the roller water sprinkling pipe and supplying water from the water tank to the roller water sprinkling device;
A connecting pipe that branches off from the roller sprinkling pipe downstream of the roller sprinkling pump and connects the roller sprinkling pipe and the road surface sprinkling pump;
A valve device that can be switched to supply water in the roller watering pipe to the road surface watering pump as priming water through the connecting pipe;
An operating device that transmits a road sprinkling signal that permits operation control of the road sprinkling pump and a roller sprinkling signal that permits operation control of the roller sprinkling pump based on an operation by an operator;
A control device that controls the valve device so that water is supplied from the roller sprinkler pump to the roller sprinkler device through the roller sprinkler pipeline based on the road surface sprinkler signal and the roller sprinkler signal received from the operating device, and so that water is supplied from the roller sprinkler pump to the road surface sprinkler pump through the connecting pipeline as the priming water. The sprinkling system further includes a sensor that detects the presence or absence of water in the road surface sprinkling pump and transmits a signal according to the detection result to the control device;
The rolling machine described in claim 1, characterized in that when the control device determines that there is no water in the road surface watering pump based on the signal received from the sensor, it controls the valve device so that water is supplied from the roller watering pump to the road surface watering pump via the connecting pipeline as the priming water. The water sprinkler system further includes a display device that displays an operating state of the water sprinkler system,
The control device controls the display device to indicate the operation of the road sprinkler pump or the filling of priming water into the road sprinkler pump based on the road sprinkler signal received from the operating device, and controls the display device to indicate the operation of the roller sprinkler pump based on the roller sprinkler signal received from the operating device.The compaction machine described in claim 1, characterized in that the control device controls the display device to indicate the operation of the roller sprinkler pump based on the roller sprinkler signal received from the operating device. The roller water sprinkling device includes a nozzle portion that sprinkles water supplied from the water tank onto the compaction roller, the nozzle portion having an inner diameter smaller than an inner diameter of the roller water sprinkling pipe,
2. The rolling machine according to claim 1, wherein the valve device includes a throttle pipe connecting the roller water sprinkling pipe and the connecting pipe, the throttle pipe having an inner diameter smaller than an inner diameter of the roller water sprinkling pipe. The rolling machine according to claim 4, characterized in that the inner diameter of the nozzle portion is the same as the inner diameter of the throttle pipe.

Images