JP6953460B2 - Rolling machine - Google Patents

Description

The present invention relates to a compaction machine, and particularly relates to a technique for optimizing the spraying timing of water and a liquid agent.

Rolling machines such as tire rollers are equipped with rolling rollers (for example, rolling tires and iron wheels) that also serve as wheels at the front and rear of the vehicle body in order to compact the paving material during road surface pavement work. ..
Such a compaction machine compacts the pavement material by a compaction roller while traveling on a road surface covered with a pavement material such as an asphalt mixture.

However, since the rolling roller comes into contact with the pavement material with a strong pressure, fragments separated from the pavement material adhere to the surface thereof, which hinders the formation of a smooth road surface.
Therefore, a watering nozzle is arranged at a position close to the compaction roller, and water is sprinkled from the watering nozzle to the outer peripheral surface of the compaction roller during the pavement work to prevent the pavement material from adhering.

Further, a technique for saving water sprinkled from a watering nozzle to the outer peripheral surface of a compaction roller has been developed (Patent Document 1).

Japanese Unexamined Patent Publication No. 2015-203188

By the way, in such a compaction machine, it is known to spray a liquid agent such as an asphalt mixture adhering inhibitor in addition to the water sprinkled from the watering nozzle. This liquid agent can prevent the pavement material from adhering to the compaction roller even when the temperature difference between the compaction roller and the road surface is large (action by the liquid agent). If such spraying of the liquid agent is performed at the same time as watering, the liquid agent may be diluted and the action of the liquid agent may be reduced. In addition, if the liquid agent is sprayed more than necessary, there is a risk of roughening the road surface (reaction by the liquid agent).

Here, in view of the technique disclosed in Patent Document 1, the technique for saving water to be sprinkled is disclosed, but the spraying of a liquid agent is not disclosed, and there is room for further improvement.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a compaction machine capable of maintaining a good action by a liquid agent and suppressing a reaction caused by the liquid agent. ..

In order to achieve the above object, the compaction machine of the present invention includes a liquid agent spraying device for spraying a liquid agent on a compaction roller provided in the machine body, a wheel temperature sensor for detecting the temperature of the compaction roller, and the compaction. In a compaction machine including a road surface temperature sensor that detects the temperature of the road surface that is compacted by the rollers and a controller that controls the liquid agent spraying device, the controller calculates the temperature difference between the compaction roller and the road surface. When the temperature difference between the rolling roller and the road surface calculated by the temperature difference calculation unit exceeds the first temperature, the liquid agent spraying device is operated in the first cycle. It is a feature.

As a result, when the temperature difference between the rolling roller and the road surface exceeds the first temperature, the liquid agent is sprayed in the first cycle, so that the temperature difference between the rolling roller and the road surface exceeds the first temperature. It is possible to prevent the pavement material from adhering to the compaction roller by spraying a liquid agent when the pavement material easily adheres to the compaction roller.

As another aspect, when the temperature difference between the rolling roller and the road surface calculated by the temperature difference calculation unit exceeds the second temperature, which is higher than the first temperature, the controller starts the liquid agent from the first cycle. It is preferable to operate the liquid agent spraying device in the second cycle in which the spraying device is frequently operated.

As a result, when the temperature difference between the compaction roller and the road surface exceeds the second temperature, which is higher than the first temperature, the liquid agent is sprayed in the second cycle, in which the liquid agent spraying device is operated more frequently than in the first cycle. It is possible to increase the frequency of operating the liquid agent spraying device according to the temperature difference between the pressure roller and the road surface.

As another embodiment, the controller includes a wheel speed sensor that detects the speed of the airframe, and the controller sprays the liquid agent spraying device when the liquid agent spraying device operates as the speed of the airframe detected by the wheel speed sensor increases. It is preferable to increase the amount of the liquid agent.

As a result, the amount of liquid to be sprayed increases as the speed of the machine increases, and the amount of liquid to be sprayed increases according to the contact area of the rolling roller, which increases as the speed of the machine increases. It is possible to make it.

As another embodiment, the liquid agent remaining amount sensor for detecting the amount of the liquid agent stored in the liquid agent tank for storing the liquid agent is provided, and the controller is stored in the liquid agent tank detected by the liquid agent remaining amount sensor. When the amount of the liquid agent is less than a predetermined amount, it is preferable to reduce the amount of the liquid agent sprayed by the liquid agent spraying device.

As a result, when the amount of the liquid agent is less than a predetermined amount, it is possible to save the consumption amount of the liquid agent by reducing the amount of the liquid agent to be sprayed.

As another embodiment, the liquid agent spraying device is provided with a spray state sensor for detecting an abnormality in spraying the liquid agent by the liquid agent spraying device, and a notification device for notifying an operator who operates the machine body of information. When the controller detects the abnormality by the spray state sensor, it is preferable that the notification device notifies the operator of the abnormality.

As a result, when an abnormality in the spraying of the liquid agent is detected by the spray state sensor, the operator is notified of the abnormality by the notification device, so that the operator can be urged to take measures such as replacing the spray nozzle.

As another aspect, it is preferable that the compaction roller is provided with a watering device for sprinkling water, and the controller operates the watering device when the liquid agent spraying device is stopped.

As a result, it is possible to prevent the liquid agent and water from being mixed by operating the watering device when the liquid agent spraying device is stopped.

As another aspect, the controller includes a wheel speed sensor that detects the speed of the airframe, and the controller sprinkles water when the watering device operates as the speed of the airframe detected by the wheel speed sensor increases. It is preferable to increase the amount of.

As a result, when the amount of water is less than a predetermined amount, it is possible to save the amount of water consumed by reducing the amount of water to be sprinkled.

As another embodiment, the water level sensor for detecting the amount of the water stored in the water tank for storing the water is provided, and the controller is stored in the water tank detected by the water level sensor. When the amount of the water is less than a predetermined amount, it is preferable to reduce the amount of the water sprinkled by the sprinkler.

As a result, when the amount of water is less than the specified amount, it is possible to save the amount of water consumed by reducing the amount of water to be sprinkled.

As another embodiment, the watering device is provided with a watering state sensor for detecting an abnormality in watering by the watering device, and a notification device for notifying an operator who operates the machine of the information. When the controller detects the abnormality by the watering state sensor, it is preferable that the notification device notifies the operator of the abnormality.

As a result, when an abnormality in watering is detected by the watering state sensor, the operator is notified of the abnormality by the notification device, so that the operator can be urged to take measures such as replacing the watering nozzle.

According to the compaction machine of the present invention, the liquid agent is sprayed in the first cycle when the temperature difference between the compaction roller and the road surface exceeds the first temperature, and water is sprinkled when the liquid agent spraying device is stopped. Therefore, when the temperature difference between the rolling roller and the road surface exceeds the first temperature, when the paving material tends to adhere to the rolling roller, the liquid agent is sprayed to prevent the paving material from adhering to the rolling roller. Can be prevented.

As a result, the action of the liquid agent can be kept good and the reaction of the liquid agent can be suppressed.

It is a side view of the airframe which concerns on this invention. It is a perspective view of the operation unit seen from the rear of the machine body. It is a circuit diagram of a watering device. It is a circuit diagram of a liquid agent spraying device. It is a block diagram which showed the connection structure of an ECU. It is a flowchart which showed the routine which shows the control procedure of the watering liquid agent interlocking control of the compaction machine which concerns on this invention, which is executed by the ECU. It is a flowchart which showed the routine which shows the determination procedure of speed determination executed by the ECU. It is a flowchart which showed the routine which shows the determination procedure of temperature difference determination executed by the ECU. It is a table explaining the spray setting control and sprinkling setting control of the compaction machine which concerns on this invention, which is executed by the ECU. It is a flowchart which showed the routine which shows the procedure of the sprinkling spray execution control which the ECU executes.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
With reference to FIG. 1, a side view of the airframe 1 according to the present invention is shown.

The machine body 1 is a tire roller provided with a wheel (rolling roller) 3, an operation unit 5, a watering device 7, and a liquid agent spraying device 8. This machine body 1 can be compacted in asphalt pavement work by performing compaction work described later. The wheels 3 are rubber tires, and are rolling rollers capable of traveling the machine body 1 by rotating with a drive device (not shown) and decelerating the body 1 by decelerating.

With reference to FIG. 2, a perspective view of the operation unit 5 as viewed from the rear of the machine body is shown. The operation unit 5 includes a forward / backward lever (forward / backward operation unit) 11, a steering 13, a speedometer 15, a speaker (notifying device) 17, and a sprinkler liquid agent interlocking switch 19. The operation unit 5 is a device for the operator to perform various operations such as traveling, steering, braking, watering, and spraying of the airframe 1.

The forward / backward lever 11 is a lever that is operated by an operator to control an HST (Hydraulic Static Transmission) (not shown) and changes the rotation direction of the wheels 3 to switch the traveling direction of the airframe 1 in the front-rear direction. The forward / backward lever 11 can be switched to three positions: a forward position, a neutral position, and a reverse position.

When the operator depresses the accelerator pedal while the forward / backward lever 11 is in the forward position, the HST is controlled so that the aircraft 1 can move forward. Further, when the operator depresses the accelerator pedal when the forward / backward lever 11 is in the reverse position, the HST is controlled so that the aircraft 1 can move in the backward direction. On the other hand, when the forward / backward lever 11 is in the neutral position, the HST is controlled so that the aircraft 1 does not accelerate even if the operator depresses the accelerator pedal.

The steering 13 is a steering device that is operated by an operator to rotate the wheels 3 on the front side of the machine body left and right around the vertical direction of the machine body and adjust the traveling direction of the body body 1 in the left and right direction.

The speedometer 15 is a meter that displays the speed of the machine body 1 calculated from the rotation speed of the wheels 3 detected by, for example, the wheel speed sensor 3a provided in the vicinity of the wheels 3. The speedometer 15 also displays, for example, the number of revolutions of an engine (not shown).

When the speaker 17 is operated, it is possible to emit a sound such as a notification sound or a warning sound to give a sound notification or warning to the operator.

The sprinkler liquid agent interlocking switch 19 is a changeover switch capable of switching ON / OFF of the sprinkler liquid agent interlocking control described later at will by the operator.

With reference to FIG. 3, a circuit diagram of the watering device 7 is shown. The watering device 7 is a device capable of sprinkling water from the watering nozzle 7a to the wheels 3 by operating (see FIG. 1). The watering device 7 includes a water tank 21, a pump 23, a first flow rate limiting circuit 25, a control circuit 27, and a watering nozzle 7a. The water tank 21 is a tank for storing water formed in the frame 1a of the machine body 1. The pump 23 can flow water in the circuit of the watering apparatus 7 by operating with electric power supplied from a battery (not shown), for example.

The first flow rate limiting circuit 25 includes a first flow rate limiting valve 25a, which is a so-called orifice, and can limit the flow rate of flowing water. The control circuit 27 includes an electromagnetic proportional valve 27a, and can increase the flow rate of flowing water in proportion to the electric power energized in the electromagnetic proportional valve 27a. The control circuit 27 is connected so as to allow water to flow so as to bypass the upstream side and the downstream side of the first flow rate limiting circuit 25.

As a result, when the electromagnetic proportional valve 27a is closed, the watering device 7 operates the pump 23 to sprinkle the water stored in the water tank 21 at the flow rate limited by the first flow rate limiting circuit 25. Water can be sprinkled from the nozzle 7a to the wheel 3. Further, by adjusting and supplying electric power to the electromagnetic proportional valve 27a, the valve is opened while adjusting the opening degree, and the flow rate of water flowing through the control circuit 27 and the amount of water sprinkled from the watering nozzle 7a to the wheels 3 are adjusted. Can be increased.

With reference to FIG. 4, a circuit diagram of the liquid agent spraying device 8 is shown. The liquid agent spraying device 8 is a device capable of spraying the liquid agent onto the wheels 3 from the spray nozzle 8a by operating (see FIG. 1). The liquid agent spraying device 8 includes a liquid agent tank 31, a pump 33, a second flow rate limiting circuit 35, a third flow rate limiting circuit 36, a control circuit 37, and a spray nozzle 8a. The liquid agent tank 31 is a tank for storing the liquid agent arranged at, for example, the rear part of the machine body 1 (see FIG. 1).

Here, the liquid agent is a so-called asphalt mixture adherence preventive agent that is sprayed to prevent the pavement material from adhering when there is a temperature difference between the wheel 3 and the pavement road surface, for example. The pump 33 can flow the liquid in the circuit of the liquid spray device 8 by operating with electric power supplied from a battery (not shown), for example.

The second flow rate limiting circuit 35 includes a second flow rate limiting valve 35a, which is a so-called orifice, and can limit the flow rate of the flowing liquid. The third flow rate limiting circuit 36 includes a third flow rate limiting valve 36a that opens as compared with the second flow rate limiting valve 35a, and can limit the flow rate of the flowing liquid agent.

The control circuit 37 includes a directional control valve 37a, and by controlling the directional control valve 37a, it is possible to change the direction of the flowing liquid and close the valve. The control circuit 37 is connected so that the liquid agent can flow so as to bypass the upstream side and the downstream side of the second flow rate limiting circuit 35. Further, in the third flow rate limiting circuit 36, one end is connected to the upstream side of the control circuit 37, and the other end is connected to the directional control valve 37a so that the liquid agent can flow.

Therefore, the second flow rate limiting circuit 35 closes only the third flow rate limiting circuit 36 and the control circuit 37, closes only the third flow rate limiting circuit 36, or closes only the control circuit 37 by controlling the direction control valve 37a. It is possible. As a result, when the directional control valve 37a is closed, the liquid agent spraying device 8 operates the pump 33 to increase the liquid agent stored in the liquid agent tank 31 at a flow rate limited by the second flow rate limiting circuit 35. The spray nozzle 8a can spray the wheel 3.

Further, the direction control valve 37a can be controlled to close only the control circuit 37, in other words, the third flow rate limiting circuit 36 can be opened to increase the amount of the liquid agent sprayed from the spray nozzle 8a to the wheels 3.

Further, the direction control valve 37a can be controlled to close only the third flow rate limiting circuit 36, in other words, the control circuit 37 can be opened to further increase the amount of the liquid agent sprayed from the spray nozzle 8a to the wheels 3. can.

The machine body 1 is provided with sensors such as a wheel temperature sensor 41, a road surface temperature sensor 43, a sprinkling state sensor 44, a spray state sensor 45, a water remaining amount sensor 47, and a liquid agent remaining amount sensor 49. The wheel temperature sensor 41 is, for example, an infrared sensor arranged in the vicinity of the wheel 3 and can detect the temperature of the wheel 3 (see FIG. 1). Although the wheel temperature sensor 41 is shown only in the vicinity of the wheels 3 arranged on the front side of the airframe 1 in FIG. 1, it may be arranged in the vicinity of the wheels 3 on the rear side of the airframe 1.

The road surface temperature sensor 43 is, for example, a non-contact temperature sensor, and can detect the temperature of the road surface 100 on which the wheels 3 roll (see FIG. 1). The watering state sensor 44 and the spraying state sensor 45 are pressure sensors arranged in the vicinity of the watering nozzle 7a and the spray nozzle 8a of the watering device 7 and the liquid agent spraying device 8, for example, dust on the watering nozzle 7a and the spray nozzle 8a. It is possible to detect an abnormality in watering or spraying so that the water or liquid agent is not sprinkled or sprayed from the watering nozzle 7a and the spray nozzle 8a due to clogging.

The water remaining amount sensor 47 is a sensor arranged in the water tank 21 and capable of detecting the remaining amount of water stored in the water tank 21. The liquid agent remaining amount sensor 49 is a sensor arranged in the liquid agent tank 31 and capable of detecting the remaining amount of water stored in the liquid agent tank 31.

The ECU (controller) 50 is a control device for performing comprehensive control including engine operation control, and is an input / output device, a storage device (ROM, RAM, non-volatile RAM, etc.), and a central processing unit (CPU). Etc. are included in the configuration.

With reference to FIG. 5, the connection configuration of the ECU 50 is shown in a block diagram.
On the input side of the ECU 50, a wheel speed sensor 3a, a sprinkler liquid agent interlocking switch 19, a wheel temperature sensor 41, a road surface temperature sensor 43, a sprinkling state sensor 44, a spray state sensor 45, a water remaining amount sensor 47, and a liquid agent remaining amount sensor 49 are located. It is electrically connected.

As a result, the wheel speed sensor 3a inputs the rotational speed information of the wheel 3 to the ECU 50, and the sprinkler liquid agent interlocking switch 19 inputs the ON / OFF operation of the sprinkler liquid agent interlocking control by the operator, and the wheel temperature sensor 41 The temperature information of the wheel 3 is input from, the temperature information of the road surface 100 is input from the road surface temperature sensor 43, the pressure information in the vicinity of the watering nozzle 7a is input from the watering state sensor 44, and the spraying state sensor 45 sprays. The pressure information in the vicinity of the nozzle 8a is input, the remaining amount information of the water stored in the water tank 21 is input from the water remaining amount sensor 47, and the remaining amount of the liquid agent stored in the liquid agent tank 31 is input from the liquid agent remaining amount sensor 49. The quantity information is entered.

On the other hand, the watering device 7, the liquid agent spraying device 8, and the speaker 17 are electrically connected to the output side of the ECU 50. As a result, the ECU 50 controls (ON, OFF) the watering device 7 and the liquid agent spraying device 8 to appropriately sprinkle and spray water and the liquid agent, and controls the speaker 17 to sound a notification sound, a warning sound, or the like. can.

The ECU 50 is provided with a wheel rotation speed calculation unit 52, an airframe speed calculation unit 54, and a temperature difference calculation unit 56 as calculation units, and a storage unit 62 for storing calculation results by each calculation unit.

The wheel rotation speed calculation unit 52 is a calculation unit capable of counting the rotation speed of the wheel 3 based on the rotation speed information of the wheel 3 input from the wheel speed sensor 3a.

The body speed calculation unit 54 is a calculation unit capable of calculating the speed of the body 1 based on the rotation speed information of the wheels 3 input from the wheel speed sensor 3a.

The temperature difference calculation unit 56 is a temperature between the temperature of the wheel 3 and the temperature of the road surface 100 based on the temperature information of the wheel 3 input from the wheel temperature sensor 41 and the temperature information of the road surface 100 input from the road surface temperature sensor 43. It is a calculation unit that can calculate the difference.

With reference to FIG. 6, a routine showing a control procedure of the watering liquid agent interlocking control of the compaction machine according to the present invention, which is executed by the ECU 50, is shown in a flowchart, and with reference to FIGS. 7 and 8, speed determination and temperature difference determination are performed. A routine showing the determination procedure is shown in the flowchart. Further, referring to FIG. 9, a table explaining the spray setting control and the sprinkling setting control of the compaction machine according to the present invention, which is executed by the ECU 50, is shown.

Then, referring to FIG. 10, a routine showing the control procedure of the water spray execution control executed by the ECU 50 is shown in the flowchart. Hereinafter, the control procedure of the sprinkler liquid agent interlocking control will be described with reference to FIGS. 6 to 10. For convenience of explanation, the compaction work in the entire section to be constructed is referred to as compaction construction.

According to FIG. 6, the watering liquid agent interlocking control of this routine starts when the watering liquid agent interlocking switch 19 is turned on (step S1).

In step S10, the speed determination is performed based on the flowchart of FIG. 7. In the speed determination step S110, it is determined whether or not the speed V of the aircraft 1 calculated by the aircraft speed calculation unit 54 is less than the first speed V1. If it is determined that the determination result in step S110 is true (Yes) and the speed V of the aircraft 1 is less than the first speed V1, the process proceeds to step S120. Further, if the determination result in step S110 is false (No) and it is determined that the speed V of the aircraft 1 is equal to or higher than the first speed V1, the process proceeds to step S130. In step S130, it is determined whether or not the speed V of the machine 1 calculated by the machine speed calculation unit 54 is less than the second speed V2.

If it is determined that the determination result in step S130 is true (Yes) and the speed V of the aircraft 1 is less than the second speed V2, the process proceeds to step S140. Further, if it is determined that the determination result in step S130 is false (No) and the speed V of the aircraft 1 is equal to or higher than the second speed V2, the process proceeds to step S150.

In step S120, the speed of the aircraft 1 is in the first speed band (less than the first speed V1), in step S140, it is in the second speed band (first speed V1 or more, less than the second speed V2), and in step S150, the first speed. It is determined that the vehicle is traveling at a speed included in each of the three speed bands (second speed V2 or higher), the speed is stored in the storage unit 62, the speed determination is completed, and the process proceeds to step S20.

As a result, in step S10, the speed V of the aircraft 1 is stored at a speed included in the first speed band, the second speed band, or the third speed band by the speed determination. It is possible to improve the accuracy of watering and spraying in the watering spray execution control described later.

In step S20, the temperature difference determination is performed based on the flowchart of FIG. In step S210 of the temperature difference determination, it is determined whether or not the temperature difference T between the wheel 3 and the road surface 100 calculated by the temperature difference calculation unit 56 is equal to or less than the first threshold value T1 (first temperature).

If it is determined that the determination result in step S210 is true (Yes) and the temperature difference T is equal to or less than the first threshold value T1, the process proceeds to step S220. If it is determined that the determination result in step S210 is false (No) and the temperature difference T exceeds the first threshold value T1, the process proceeds to step S230, and whether or not the temperature difference T is equal to or less than the second threshold value T2 (second temperature). To determine.

If it is determined that the determination result in step S230 is true (Yes) and the temperature difference T is equal to or less than the second threshold value T2, the process proceeds to step S240. Further, if it is determined that the determination result in step S230 is false (No) and the temperature difference T exceeds the second threshold value T2, the process proceeds to step S250.

In step S220, the temperature difference T is in the first range (first threshold value T1 or less), in step S240, it is in the second range (more than the first threshold value T1, second threshold value T2 or less), and in step S250, it is in the third range (first threshold value T2 or less). It is determined that the temperature difference is included in the second threshold value T2 or more), the temperature difference is stored in the storage unit 62, the temperature difference determination is completed, and the process proceeds to step S30.

As a result, in step S20, the temperature difference T between the wheel 3 and the road surface 100 is stored in the first range, the second range, or the third range by the temperature difference determination, which will be described later. It is possible to improve the accuracy of watering and spraying in the watering spray execution control.

In step S30, the spray setting control is performed based on the table of FIG. Specifically, when the temperature difference T between the wheel 3 and the road surface 100 determined in step S20 and stored in the storage unit 62 is a value included in the first range, the liquid agent is not sprayed and the second In the case of a value included in the range, a liquid agent equivalent to one rotation (first cycle) is sprayed every 15 rotations of the wheel 3, and in the case of a value included in the third range, every 10 rotations of the wheel 3 The storage unit 62 stores that the liquid agent corresponding to one rotation (second cycle) is sprayed.

When the speed V of the aircraft 1 determined in step S10 and stored in the storage unit 62 is a value included in the first speed band, the amount of the liquid to be sprayed is set as the first amount and included in the second speed band. In the case of the value to be sprayed, the amount of the liquid to be sprayed is set to the second amount, and in the case of the value included in the third speed band, the amount of the liquid to be sprayed is set to the third amount. Further, when the amount of the liquid agent in the liquid agent tank 31 detected by the liquid agent remaining amount sensor 49 is less than the predetermined amount, the amount of the liquid agent to be sprayed stored in the storage unit 62 is halved, for example, and stored in the storage unit 62. The process proceeds to step S40.

In this way, by changing and setting the spraying timing and amount of the liquid agent according to the temperature difference T between the wheel 3 and the road surface 100 and the speed V of the machine body 1, a sufficient amount is necessary and sufficient for the sprinkling spray execution control described later. Liquid can be sprayed. As a result, it is possible to suppress the reaction caused by the liquid agent such as roughening the road surface.

Further, the consumption of the liquid agent can be saved by reducing the amount of the liquid agent to be sprayed according to the amount of the liquid agent in the liquid agent tank 31 detected by the liquid agent remaining amount sensor 49.

In step S40, as in step S30, watering setting control is performed based on the table of FIG. Specifically, when the temperature difference T between the wheel 3 and the road surface 100 determined in step S20 and stored in the storage unit 62 is a value included in the first range, water is always sprinkled and included in the second range. In the case of the value, it is equivalent to 14 rotations every 15 rotations of the wheel 3, and when the liquid agent is not sprayed, water is sprinkled. In the case of the value included in the third range, it is equivalent to 9 rotations every 10 rotations of the wheel 3. , The storage unit 62 stores that water is sprinkled when the spraying of the liquid agent is not performed.

Further, when the speed V of the aircraft 1 determined in step S10 and stored in the storage unit 62 is a value included in the first speed band, the amount of water to be sprinkled is set as the first amount and included in the second speed band. In the case of the value, the amount of water to be sprinkled is set as the second amount, and in the case of the value included in the third speed band, the amount of water to be sprinkled is set as the third amount.

Further, when the amount of water in the water tank 21 detected by the water remaining amount sensor 47 is less than the specified amount, the amount of water to be sprinkled stored in the storage unit 62 is halved, for example, and stored in the storage unit 62. Move to S50.

In this way, by changing and setting the watering timing and amount according to the temperature difference T between the wheel 3 and the road surface 100 and the speed V of the machine body 1, a sufficient amount is necessary and sufficient for the watering spray execution control described later. Water can be sprinkled at a different time than spraying the liquid. As a result, it is possible to prevent the liquid agent from being mixed and diluted to reduce the action of the liquid agent.

Further, water consumption can be saved by reducing the amount of water to be sprinkled according to the amount of water in the water tank 21 detected by the water remaining amount sensor 47.

In step S50, sprinkling spray execution control is performed based on the flowchart of FIG. In step S310, the liquid agent is sprayed according to the spraying timing and amount of the liquid agent stored in the storage unit 62, and the process proceeds to step S320. Here, according to FIG. 4, by controlling the directional control valve 37a provided in the liquid agent spraying device 8 as described above, the timing and amount of the liquid agent spraying can be adjusted. If it is set in step S30 that the spraying of the liquid agent is not executed, the spraying of the liquid agent is not executed, so that step S310 is not substantially executed and the process proceeds to step S320.

In step S320, it is determined whether or not the liquid agent spraying performed in step S310 has been performed without any abnormality. Here, whether or not the liquid agent has been sprayed without any abnormality is determined from, for example, the pressure information in the vicinity of the spray nozzle 8a detected by the spray state sensor 45 provided in the liquid agent spraying device 8.

If the determination result in step S320 is true (Yes) and it is determined that the liquid agent has been sprayed normally, the process proceeds to step S340. If it is determined that the determination result in step S320 is false (No) and there is an abnormality in the spraying of the liquid agent, the process proceeds to step S330, the speaker 17 is controlled to sound a notification sound, and the process proceeds to step S340.

As a result, in steps S310 to S330, the liquid agent is sprayed according to the spraying timing and amount of the liquid agent stored in the storage unit 62 (step S320), and if there is an abnormality in this spraying (No in step S320), A notification sound can be emitted from the speaker 17 (step S340) to prompt the operator to replace the spray nozzle.
In step S340, water is sprinkled according to the watering timing and amount of the water stored in the storage unit 62, and the process proceeds to step S350. Here, according to FIG. 3, by controlling the electromagnetic proportional valves 27a provided in the watering device 7 as described above, the timing and amount of watering can be adjusted.

In step S350, it is determined whether or not the watering performed in step S340 has been performed without any abnormality. Here, whether or not the watering has been performed without any abnormality is determined from, for example, the pressure information in the vicinity of the watering nozzle 7a detected by the watering state sensor 44 provided in the watering device 7.

When the determination result in step S350 is true (Yes) and it is determined that the watering has been performed without any abnormality, the watering spray execution control is terminated. If it is determined that the determination result in step S350 is false (No) and there is an abnormality in watering, the process proceeds to step S360, the speaker 17 is controlled to sound a warning sound (notification), and the watering spray execution control is terminated. do.

As a result, in steps S340 to S360, water is sprinkled according to the watering timing and amount stored in the storage unit 62 (step S340), and if there is an abnormality in this watering (No in step S350), A warning sound can be emitted from the speaker 17 (step S360) to prompt the operator to replace the watering nozzle 7a.

After executing the watering spray execution control in step S50, this routine is terminated, and this routine is repeatedly executed from step S10 again.

As described above, in the compaction machine according to the present invention, the liquid agent spraying device 8 for spraying the liquid agent on the wheels 3 provided in the machine body 1, the wheel temperature sensor 41 for detecting the temperature of the wheels 3, and the wheels 3 are used for rolling. In a compaction machine including a road surface temperature sensor 43 that detects the temperature of the road surface 100 to be pressed and an ECU 50 that controls a liquid agent spraying device 8, the ECU 50 calculates a temperature difference T for calculating a temperature difference T between the wheel 3 and the road surface 100. When the temperature difference T between the wheel 3 and the road surface 100 calculated by the temperature difference calculation unit 56 exceeds the first range, that is, exceeds the first threshold value T1, the wheel 3 has a unit 56, and when the wheel 3 rotates 15 times, 1 The liquid agent spraying device 8 corresponding to the rotation is operated.

Therefore, when the temperature difference T between the wheel 3 and the road surface 100 exceeds the first range, the liquid agent corresponding to one rotation is sprayed every 15 rotations of the wheel 3, so that the temperature difference between the wheel 3 and the road surface 100 It is possible to prevent the paving material from adhering to the wheel 3 by spraying the liquid agent when the paving material is likely to adhere to the wheel 3 as when T exceeds the first range.

Therefore, a necessary and sufficient amount of the liquid agent can be appropriately sprayed, and it is possible to prevent the road surface from being roughened by the liquid agent.

Then, when the temperature difference T between the wheel 3 and the road surface 100 calculated by the temperature difference calculation unit 56 exceeds the second range, which is a temperature range higher than the first range, that is, the ECU 50 exceeds the second threshold value T2. Since the liquid agent was sprayed on the wheel 3 by operating the liquid agent spraying device 8 corresponding to one rotation every 10 rotations of the wheel 3, the frequency of operating the liquid agent spraying device 8 according to the temperature difference T between the wheel 3 and the road surface 100. Can be enhanced.

Then, the wheel speed sensor 3a for detecting the speed V of the machine body 1 is provided, and the ECU 50 sprays the liquid agent when the liquid agent spraying device 8 operates as the speed V of the machine body 1 detected by the wheel speed sensor 3a increases. Since the amount was increased to be the first amount, the second amount, and the third amount, the amount of the liquid agent to be sprayed according to the contact area of the wheel 3 per unit time, which increases as the speed V of the aircraft 1 increases. Can be increased.

Then, the ECU 50 includes a liquid agent remaining amount sensor 49 that detects the amount of the liquid agent stored in the liquid agent tank 31 that stores the liquid agent, and the ECU 50 determines the amount of the liquid agent stored in the liquid agent tank 31 detected by the liquid agent remaining amount sensor 49. When the amount is less than the predetermined amount, the amount of the liquid agent sprayed by the liquid agent spraying device 8 is reduced, so that the consumption amount of the liquid agent can be saved.

The ECU 50 is provided with a liquid agent spraying device 8 and includes a spray state sensor 45 for detecting an abnormality in spraying the liquid agent by the liquid agent spraying device 8 and a speaker 17 for notifying an operator who operates the machine body 1 of information. When the spray state sensor 45 detects an abnormality, the speaker 17 notifies the operator of the abnormality, so that the operator can be urged to take measures such as replacing the spray nozzle 8a.

Then, the wheels 3 are provided with a watering device 7 for sprinkling water, and the ECU 50 operates the watering device 7 when the liquid agent spraying device 8 is stopped, so that it is possible to prevent the liquid agent and water from mixing. can.

Then, the wheel speed sensor 3a for detecting the speed V of the airframe 1 is provided, and the ECU 50 increases the amount of water sprinkled when the sprinkler 7 operates as the speed V of the airframe 1 detected by the wheel speed sensor 3a increases. Was increased to be the first amount, the second amount, and the third amount, so that the amount of water consumed can be saved.

Then, the water remaining amount sensor 47 for detecting the amount of water stored in the water tank 21 for storing water is provided, and the ECU 50 determines the amount of water stored in the water tank 21 detected by the water remaining amount sensor 47. When the amount is less than the predetermined amount, the amount of water sprinkled by the sprinkler 7 is reduced, so that the amount of water consumed can be saved.

The ECU 50 includes a watering state sensor 44 that is provided in the watering device 7 and detects an abnormality in watering by the watering device 7, and a speaker 17 that warns the operator who operates the machine body 1 of information. When the watering state sensor 44 detects an abnormality, the speaker 17 warns the operator of the abnormality, so that the operator can be urged to take measures such as replacing the watering nozzle 7a.

The description of the compaction machine according to the present invention is completed above, but the present invention is not limited to the above embodiment and can be changed without departing from the gist of the invention.
For example, in the present embodiment, the speed V of the machine 1 is classified into three speed bands of the first speed band, the second speed band, or the third speed band by the machine speed calculation unit 54, but it is proportional to the speed V of the machine 1. The amount of the liquid agent sprayed and the amount of water sprinkled may be adjusted.

Similarly, the temperature difference calculation unit 56 classifies the temperature difference T between the temperature of the wheel 3 and the temperature of the road surface 100 into three ranges of the first range, the second range, and the third range, but it is proportional to the temperature difference T. The amount of the liquid agent sprayed and the amount of water sprinkled may be adjusted.

Further, in the present embodiment, the watering device 7 and the liquid agent spraying device 8 have been described as including the circuits of FIGS. 3 and 4, but the circuit of the watering device 7 is shown in FIG. 4 and the circuit of the liquid agent spraying device 8 is shown in FIG. It may be configured as follows, or may be changed as appropriate.

Further, in the present embodiment, the control procedure of the spray control has been described based on the flowchart of FIG. 5, but the order of each step may be changed as appropriate.

1 Aircraft 3 Wheels (Rolling Roller)
3a Wheel speed sensor 7 Watering device 8 Liquid agent spraying device 11 Forward / backward lever (forward / backward operation unit)
17 Speaker (notification device)
21 Water tank 31 Liquid agent tank 41 Wheel temperature sensor 43 Road surface temperature sensor 44 Sprinkling state sensor 45 Spraying state sensor 47 Water remaining amount sensor 49 Liquid agent remaining amount sensor 50 ECU (controller)
56 Temperature difference calculation unit 62 Storage unit

Claims (9)

A liquid agent spraying device that sprays liquid agents on the rolling rollers provided in the machine,
A wheel temperature sensor that detects the temperature of the rolling roller and
A road surface temperature sensor that detects the temperature of the road surface that is compacted by the compaction roller, and
In a compaction machine provided with a controller for controlling the liquid agent spraying device,
The controller has a temperature difference calculation unit that calculates the temperature difference between the compaction roller and the road surface, and the temperature difference between the compaction roller and the road surface calculated by the temperature difference calculation unit is the first temperature. When the temperature exceeds the above, the compaction machine is characterized in that the liquid agent spraying device is operated in the first cycle. When the temperature difference between the rolling roller and the road surface calculated by the temperature difference calculation unit exceeds the second temperature higher than the first temperature, the controller operates the liquid agent spraying device from the first cycle. The compaction machine according to claim 1, wherein the liquid agent spraying device is operated in a frequently second cycle. It is equipped with a wheel speed sensor that detects the speed of the aircraft.
The controller according to claim 1, wherein the controller increases the amount of the liquid to be sprayed when the liquid agent spraying device is operated as the speed of the airframe detected by the wheel speed sensor increases. Rolling machine. A liquid agent remaining amount sensor for detecting the amount of the liquid agent stored in the liquid agent tank for storing the liquid agent is provided.
The controller is characterized in that when the amount of the liquid agent stored in the liquid agent tank detected by the liquid agent remaining amount sensor is less than a predetermined amount, the amount of the liquid agent sprayed by the liquid agent spraying device is reduced. The compaction machine according to claim 1. A spray state sensor provided in the liquid agent spraying device to detect an abnormality in spraying the liquid agent by the liquid agent spraying device, and a spray state sensor.
It is equipped with a notification device that notifies the operator who operates the aircraft of information.
The compaction machine according to claim 1, wherein the controller notifies the operator of the abnormality by the notification device when the abnormality is detected by the spray state sensor. The compaction roller is provided with a watering device for sprinkling water.
The compaction machine according to claim 1, wherein the controller operates the watering device when the liquid agent spraying device is stopped. It is equipped with a wheel speed sensor that detects the speed of the aircraft.
The transfer according to claim 6, wherein the controller increases the amount of water to be sprinkled when the sprinkler operates as the speed of the airframe detected by the wheel speed sensor increases. Pressure machine. A water level sensor for detecting the amount of the water stored in the water tank for storing the water is provided.
The controller is characterized in that when the amount of water stored in the water tank detected by the water remaining amount sensor is less than a predetermined amount, the amount of water sprinkled by the watering device is reduced. The compaction machine according to claim 6. A watering state sensor provided in the watering device and detecting an abnormality in watering by the watering device.
It is equipped with a notification device that notifies the operator who operates the aircraft of information.
The compaction machine according to claim 6, wherein the controller notifies the operator of the abnormality by the notification device when the abnormality is detected by the watering state sensor.

Images