JP2020148044A - Rolling compaction machine - Google Patents

Abstract

To provide a rolling compaction machine capable of reducing the amount of sprayed liquid while suppressing uneven spraying of the liquid on the roller.SOLUTION: A rolling compaction machine includes: rollers that compact a road surface; a liquid spraying device 9 that sprays liquid at a prescribed point on the roller; and a controller 55 that controls the liquid spraying device 9. The controller 55 includes: a spraying range determination unit 63 that determines a spraying range as the range where the liquid is sprayed among the rollers by the liquid spraying device 9; and a liquid spraying control unit 75 that executes and stops the spraying of the liquid by the liquid spraying device 9. The liquid spraying control unit 75 stops the liquid spraying device 9 when the prescribed point is the spraying range determined by the spraying range determination unit 63.SELECTED DRAWING: Figure 2

Description

The present invention relates to a compaction machine, and more particularly to a technique for improving compaction accuracy by a roller.

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 machine body in order to compact the paving material during road surface pavement work. ..
In such a compaction machine, water or liquid stored in a water tank or a liquid agent tank is sprayed onto the compaction roller in order to prevent the asphalt mixture laid on the paved road surface from adhering to the compaction roller. are doing.

Further, in order to save water sprayed on the rolling roller, a technique has been developed in which the cycle in which the rolling roller makes one rotation is determined and the spraying device is intermittently operated and stopped according to a multiple of the cycle. (Patent Document 1).

Japanese Unexamined Patent Publication No. 2015-203188

However, in the technique disclosed in Patent Document 1, the traveling direction of the compaction machine is switched in the front-rear direction during spraying on the compaction roller, and the portion not sprayed on the compaction roller (spray unevenness). May occur. Such spray unevenness may cause the asphalt mixture to adhere to the compaction roller due to lack of water.

The present invention has been made in view of such a problem, and an object of the present invention is the amount of liquid to be sprayed while suppressing uneven spraying of water or liquid agent (liquid) on a rolling roller (roller). The purpose is to provide a compaction machine capable of reducing the problem.

In order to achieve the above object, the compaction machine of the present invention is a compaction machine including a roller for compacting a road surface and a liquid spraying device for spraying a liquid at a predetermined position of the roller. The controller has a spray range determination unit that determines a spray range as a range in which the liquid is sprayed by the liquid spray device, and the controller of the liquid by the liquid spray device. The liquid spray control unit includes a liquid spray control unit that executes and stops spraying, and the liquid spray control unit stops the liquid spray device when the predetermined point is in the spray range determined by the spray range determination unit. It is a feature.

As a result, the spray range determination unit determines the spray range as the range in which the liquid is sprayed, and when the predetermined point is the spray range, the liquid spray device is stopped to switch the traveling direction of the aircraft in the front-rear direction, for example. At that time, it is possible to prevent further spraying of the liquid in the area where the liquid has already been sprayed.

As another aspect, the rotation angle sensor for detecting the rotation angle of the roller is provided, and the spray range determination unit has a spray timing by the liquid spray control unit and the rotation angle of the roller detected by the rotation angle sensor. It is preferable to determine the spray range based on.

As a result, when determining the spray range, the accuracy of the spray range determined by the spray range determination unit is improved by making a determination based on the spray timing by the liquid spray control unit and the rotation angle of the roller detected by the rotation angle sensor. It is possible.

As another aspect, the controller includes a ground contact range determination unit that determines a ground contact range as a range grounded to the road surface in the spray range, and the liquid spray control unit includes the ground contact range determination unit at the predetermined point. It is preferable to perform spraying of the liquid by the liquid spraying device when the ground contact range is determined by.

As a result, when the predetermined point is in the ground contact range determined by the ground contact range determination unit, the liquid spraying by the liquid spray device reduces the amount of liquid attached by grounding even in the spray range. For the part, it is possible to spray the liquid again.

In another aspect, the controller includes a timekeeping unit that measures the time taken as the time elapsed from the time the liquid was sprayed by the liquid spraying device, and the liquid spray control unit is timed by the timekeeping unit. When the timekeeping time exceeds the specified time, it is preferable to spray the liquid also in the spray range.

As a result, when the timed time measured by the time measuring unit exceeds the specified time, the liquid is sprayed even if the predetermined point is within the spraying range, so that, for example, the liquid attached to the roller evaporates for the specified time. If it is time, when the time counting time exceeds the specified time, it means that the liquid is not attached to the roller, so that it is possible to spray the liquid again even in the spraying range.

In another aspect, the controller includes a spray amount setting unit that variably sets the amount of liquid sprayed by the liquid spray device, and the liquid spray control unit executes spraying of the liquid by the liquid spray device. At that time, it is preferable to spray according to the amount of the liquid variably set by the spray amount setting unit.

As a result, when the liquid is sprayed by the liquid spraying device, the liquid is sprayed according to the amount of liquid variably set by the spray amount setting unit, so that, for example, the spray range is sprayed on the ground contact range as the range grounded on the road surface. By adjusting the amount of the liquid to be sprayed, it is possible to suppress the excessive spraying of the liquid.

As another embodiment, the roller is provided with a water spray device for spraying water onto the roller, the controller includes a water spray control unit that executes and stops spraying the water by the water spray device, and the liquid is supplied to the roller. It is an adhesion preventive agent that prevents the pavement material of the road surface from adhering, and the liquid spray control unit is the water spray device executed by the water spray control unit when the liquid is sprayed by the liquid spray device. It is preferable to stop the spraying of the water by.

As a result, when spraying the liquid by the liquid spraying device, the spraying of the water by the water spraying device executed by the water spray control is stopped, so that the adhesion preventive agent and the water are suppressed from being mixed. It is possible to do.

According to the compaction machine of the present invention, the spray range determination unit determines the spray range as the range in which the liquid is sprayed, and when the predetermined point is the spray range, the liquid spray device is stopped. Therefore, for example, the traveling direction of the machine. When is switched in the front-back direction, it is possible to prevent further spraying of the liquid in the area where the liquid has already been sprayed.

As a result, it is possible to reduce the amount of the liquid to be sprayed while suppressing the uneven spraying of the liquid of the roller.

It is a side view of the machine body equipped with the liquid agent spraying apparatus which concerns on this invention. It is a block diagram which shows the connection structure of the controller which concerns on the control of the compaction machine which concerns on this invention. It is a flowchart which shows the routine of the control procedure of the compaction machine which concerns on this invention which a controller executes. It is explanatory drawing explaining the action and effect by the control of a controller. It is explanatory drawing explaining the action and effect by the control of a controller.

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 machine body 1 on which the liquid agent spraying device (liquid spraying device) 9 according to the present invention is mounted is shown. The machine body 1 is a tire roller provided with a front wheel (roller) 3 and a rear wheel (roller) 4. The airframe 1 can compact the road surface 100 by moving forward and backward. Further, the aircraft 1 is provided with a driver's seat 5, a water spray device 7, and a liquid agent spray device 9.

The driver's seat 5 is a seat on which the pilot who controls the aircraft 1 is boarded. A seat 11, a steering wheel 13, and an operation table 15 are arranged in the driver's seat 5.
The seat 11 is a seat on which the operator sits, and is arranged on the rear side of the driver's seat 5 in the front-rear direction of the aircraft. The steering 13 is an operating device for steering the airframe 1, and by operating the steering wheel 13, the front wheels 3 can be rotated around the vertical direction to switch the traveling direction of the airframe 1 in the left-right direction.

The operation table 15 operates a forward / backward lever 17 that switches the traveling direction of the machine body 1 in the front-rear direction, an electronic device of the machine body 1, a water spray device 7, a liquid agent spray device 9, and other various devices. A switch such as a water spray switch 54 is arranged. As a result, the operator can operate the traveling direction of the aircraft 1 and various devices at the driver's seat 5.

The water spraying device 7 is a spraying device that sprays water toward the front wheels 3 and the rear wheels 4. The water spray device 7 is formed inside the frame of the machine body 1 by operating the water pump 25 (see FIG. 2 described later), for example, by operating the water spray switch 54 described later provided on the operation panel 19. The water stored in the water tank 21 can be sprayed from the water spray nozzle 23 toward the front wheels 3 and the rear wheels 4.

With reference to FIG. 2, a block diagram shows a connection configuration of a controller 55, which will be described later, according to the control of the compaction machine according to the present invention. The liquid agent spraying device 9 is a spraying device that sprays a liquid agent such as an asphalt mixture adhering inhibitor toward the front wheels 3 and the rear wheels 4. The liquid agent spraying device 9 has a liquid agent tank 31, a liquid agent spray nozzle 33, and a pump unit 35.

The liquid agent tank 31 is, for example, a tank formed in the machine body 1 and housed under the step 2, and can store the liquid agent (liquid) (see FIG. 1). The liquid agent spray nozzle 33 is a nozzle provided in the vicinity of the front wheels 3 and the rear wheels 4, and can spray the liquid agent toward the front wheels 3 and the rear wheels 4.

The pump unit 35 is a device that adjusts the supply amount of the liquid agent stored in the liquid agent tank 31 and supplies it to the liquid agent spray nozzle 33. Specifically, the pump unit 35 has a liquid agent pump 41 and a control valve 43. The liquid agent pump 41 is, for example, a pump that operates by being supplied with electric power from a battery (not shown), and can be operated by operating an automatic spray switch 53, which will be described later, arranged on the operation panel 19.

The control valve 43 is an electromagnetic proportional valve that can be opened and closed by adjusting the opening degree by the liquid agent spray control unit (liquid spray control unit) 75 of the controller 55, which will be described later, and goes from the liquid agent pump 41 to the liquid agent spray nozzle 33. It is arranged in the liquid agent flow path 32. The control valve 43 includes a valve opening portion 43a and a valve closing portion 43b. When power is not supplied, the valve closing portion 43b closes the valve, and when power is supplied, the valve opening portion 43a is closed. It is switched to an adjusted valve opening state in which the opening degree is adjusted according to the supplied electric power.

A rotation angle sensor 51 is arranged in the vicinity of the rear wheel 4. Further, the operation panel 19 is provided with an automatic spray switch 53 and a water spray switch 54.
The rotation angle sensor 51 counts the serrations 52a of the pulse wheel 52 provided on the rotation axis of the rear wheel 4, and the angle of the rear wheel 4 based on the count (rotation angle, angle information of the rear wheel 4). ) Is a sensor that detects. The automatic spray switch 53 is, for example, a switch capable of switching to any of "continuous", "stop" and "intermittent" (spray mode). When the automatic spray switch 53 is switched to "continuous", the liquid agent is continuously sprayed by a control different from the control according to the present invention.

The water spray switch 54 is, for example, a switch capable of switching to either "spray" or "stop", and when switched to "spray", the water spray device 7 is operated by the water spray control unit described later. It is possible to control and spray water on the front wheels 3 and the rear wheels 4.

The controller 55 is a control device for performing comprehensive control including engine operation control (not shown), such as an input / output device, a storage device (ROM, RAM, non-volatile RAM, etc.), a central processing unit (CPU), and the like. Is configured to include.

A rotation angle sensor 51 and an automatic spray switch 53 are electrically connected to the input side of the controller 55, angle information of the rear wheels 4 is input from the rotation angle sensor 51, and the automatic spray switch 53 sends the angle information of the rear wheels 4. Information about the spray mode selected by the operator is entered.

On the other hand, the liquid agent pump 41 and the control valve 43 of the pump unit 35 are electrically connected to the output side of the controller 55. Therefore, by operating the liquid agent pump 41 and setting the control valve 43 in the adjusted valve opening state, it is possible to spray the liquid agent on the front wheels 3 and the rear wheels 4 while adjusting the amount of the liquid agent sprayed from the liquid agent spray nozzle 33.

The controller 55 includes a rotation angle calculation unit 61, a spray range determination unit 63, a ground contact range determination unit 65, a storage unit 69, a spray amount setting unit 71, a timekeeping unit 73, a liquid agent spray control unit 75, and a water spray control unit 77. Has been done. The rotation angle calculation unit 61 calculates the rotation speed, rotation angle, rotation direction, rotation speed, etc. of the rear wheel 4 at the time of detection based on the angle information of the rear wheel 4 input from the rotation angle sensor 51. Is.

The spray range determination unit 63 is a determination unit that determines as a spray range a range of the rear wheels 4 to which the liquid agent sprayed from the liquid agent spray nozzle 33 is attached while the rear wheel 4 makes one rotation. The rotation speed and rotation angle of the rear wheel 4 calculated by the rotation angle calculation unit 61 and the time (spray timing) when the liquid agent spray control unit 75 executes the spray control described later are input to the spray range determination unit 63. It is possible to determine the spray range based on these.

The ground contact range determination unit 65 is a determination unit that determines a range (ground contact range) of the spray range that is in contact with the road surface 100 after spraying the liquid agent. The storage unit 69 is a storage unit that stores information (determination information) determined by the spray range determination unit 63 and the ground contact range determination unit 65.

Based on the rotation speed of the rear wheel 4 calculated by the rotation angle calculation unit 61, the cycle determination unit 67 sprays the liquid agent in the cycle related to the current rotation speed (current cycle) or the liquid agent spraying cycle (liquid agent spraying cycle). It is a determination unit that determines which cycle (spray stop cycle) does not correspond to.

Here, when the spraying mode is "intermittent", for example, if it is an intermittent cycle of spraying the liquid agent in four rotations, for example, the liquid agent spraying cycle is a cycle of one rotation of spraying the liquid agent in four rotations. The spray stop cycle indicates a cycle of 3 rotations in which the liquid agent is not sprayed during 4 rotations. A cycle selection switch capable of switching the spray cycle may be provided so that the spray cycle can be switched arbitrarily by the operator.

The spray amount setting unit 71 determines the spray range based on the rotation angle of the rear wheel 4 calculated by the rotation angle calculation unit 61, the determination information stored in the storage unit 69, and the current cycle determined by the cycle determination unit 67. Of these, it is a setting unit that variably sets the spray amount of the liquid agent according to each range described later. The time measuring unit 73 is a timer that measures how much time has passed since the last spraying of the liquid agent.

The liquid agent spray control unit 75 controls the liquid agent pump 41 and the control valve 43 of the pump unit 35 to perform spray control for spraying on the front wheels 3 and the rear wheels 4 while adjusting the amount of the liquid agent sprayed from the liquid agent spray nozzle 33. It is a control unit.

The water spray control unit 77 is a control unit that controls the water pump 25 to perform water spray control for spraying water from the water spray nozzle 23 to the front wheels 3 and the rear wheels 4. Here, the water spray control unit 77 stops spraying water during the liquid spray control by the liquid spray device 9. As a result, it is possible to prevent the liquid agent and water from being mixed and deteriorating the asphalt mixed material adhesion prevention performance due to the liquid agent.

With reference to FIG. 3, a flowchart showing a control procedure for controlling the liquid agent spray of the compaction machine according to the present invention, which is executed by the controller 55, is shown. Further, with reference to FIGS. 4 and 5, explanatory diagrams for explaining the actions and effects of the control of the controller 55 are shown.

According to FIG. 3, this routine starts when the spray mode of the automatic spray switch 53 is switched to “intermittent” (automatic spray switch ON) (step S1).

Hereinafter, for convenience of explanation, assuming that the rear wheel 4 makes one rotation for spraying the liquid agent, the position of the rear wheel 4 where the liquid agent spray nozzle 33 faces is grounded at the first point P1 (predetermined point) and the road surface 100. The position is set as the second point P2, and the end position of the range that has once touched the ground in the spray range after the point P2 during spraying of the liquid agent is set as the third point P3, and the end position of the spray range between the point P1 and the point P2. Is the fourth point P4. Further, the angle formed by the range from the point P1 to the point P4 is defined as the first angle θ1, the angle formed by the range between the point P2 and the point P3 is defined as the second angle θ2, and the angle formed by the point P3 or the point P4 to the point P1. The angle formed by the unsprayed range between them is defined as the third angle θ3.

In step S5, it is determined whether or not the current cycle determined by the cycle determination unit 67 is the liquid agent spray cycle. If it is determined that the determination result in step S5 is false (No) and the current cycle is the spray stop cycle, the process proceeds to step S80. On the other hand, when it is determined that the determination result in step S5 is true (Yes) and the current cycle is the liquid agent spray cycle, the process proceeds to step S10.

In step S10, it is determined whether or not the rear wheel 4 is rotating from the rotation speed of the rear wheel 4 calculated by the rotation angle calculation unit 61. When it is determined that the determination result in step S10 is false (No) and the rear wheel 4 is not rotating, this routine ends. On the other hand, if it is determined that the determination result in step S10 is true (Yes) and the rear wheel 4 is rotating, the process proceeds to step S20. As a result, it is possible to suppress spraying the liquid agent on the rear wheels 4 by the routine after step S20 until the rear wheels 4 are not rotating (No in step S10).

In step S20, it is determined whether or not the first point P1, which is the point where the liquid agent spray nozzle 33 faces, has already been sprayed. Hereinafter, the spray amount determination will be described in detail.

According to FIG. 4, first, considering the case where the airframe 1 starts to move backward and the rear wheel 4 rotates by the first angle θ1 (see (i) in FIG. 4), the liquid agent spraying device 9 causes the rear wheel 4 to rotate. The liquid agent is sprayed on the surface in a range corresponding to the first angle θ1 from the point P1 to the point P4 (hereinafter referred to as the first range). On the other hand, the liquid agent has not yet been sprayed in the range corresponding to the third angle θ3 (hereinafter referred to as the third range) in the spray range.

Next, considering the case where the airframe 1 starts to move backward and the spray range rotates beyond the point P2 (see (ii) in FIG. 4), the range corresponding to the second angle θ2 on the surface of the rear wheel 4. Regarding (hereinafter referred to as the second range), since the liquid agent is sprayed at the first point P1 and then grounded on the road surface 100 at the second point P2, the amount of the liquid agent attached to the surface of the rear wheel 4 is large. is decreasing.

After that, when the aircraft 1 further moves backward and the spray range rotates beyond the point P1 (see (iii) in FIG. 4), the current cycle becomes the spray stop cycle (No in step S5), which will be described later. In step S80, the spraying of the liquid agent by the spraying device 9 is stopped. From this, in the liquid agent spray control, the liquid agent can be sprayed over one rotation of each of the rear wheels 4 in each intermittent cycle.

Then, when the rear wheel 4 rotates four times after the aircraft 1 starts to move backward, the current cycle becomes the liquid agent spraying cycle again, and the liquid agent spraying is restarted (see (iv) in FIG. 4). In view of the above, the range corresponding to the third angle θ3 (hereinafter referred to as the third range) on the surface of the rear wheel 4 is grounded on the road surface 100 four times after being finally sprayed at the first point P1. However, the attachment of the liquid agent is insufficient.

Therefore, in the controller 55, the first range is the range in which the liquid agent is sufficiently adhered, the second range is the range in which the liquid agent adhered is reduced by touching the road surface 100, and the third range is the range in which the liquid agent is finally sprayed. By touching the road surface 100 four times after this, it is determined that the liquid agent is insufficiently attached.

As described above, in step S20, whether or not the first point P1 has already been sprayed, in other words, whether or not the surface of the rear wheel 4 located at the first point P1 corresponds to the first range or the second range. To judge. If the determination result in step S20 is false (No) and the surface of the rear wheel 4 located at the first point P1 corresponds to the third range, the process proceeds to step S50. On the other hand, if the determination result in step S20 is true (Yes) and the surface of the rear wheel 4 located at the first point P1 corresponds to the first range or the second range, the process proceeds to step S30.

In step S30, it is determined whether or not the first point P1 is in contact with the road surface 100, in other words, whether or not the surface of the rear wheel 4 located at the first point P1 corresponds to the second range. If the determination result in step S30 is true (Yes) and it is determined that the surface of the rear wheel 4 located at the first point P1 corresponds to the second range, the process proceeds to step S60. On the other hand, if the determination result in step S30 is false (No) and it is determined that the surface of the rear wheel 4 located at the first point P1 corresponds to the first range, the process proceeds to step S40.

In step S40, it is determined whether or not the time elapsed since the last timed by the time measuring unit 73 after spraying the liquid agent has elapsed a predetermined time (for example, about 3 to 5 seconds). When it is determined that the determination result in step S40 is true (Yes) and the time elapsed since the last spraying of the liquid agent has elapsed the specified time, the process proceeds to step S70. On the other hand, if the determination result in step S40 is false (No) and it is determined that the time elapsed since the last spraying of the liquid agent is within the specified time, the process proceeds to step S80 and the spray control by the liquid agent spray control unit 75 is stopped. And end this routine.

As a result, in steps S20 and S30, when the surface of the rear wheel 4 located at the first point P1 corresponds to the third range (No in step S20) and corresponds to the second range (Yes and Yes in step S20). It can be determined if it corresponds to Yes) in step S30 and if it corresponds to the first range (Yes in step S20 and No in step S30).

Considering (i) to (iii) in FIG. 4, when the aircraft 1 starts, the first point P1 is in the third range, so the liquid agent is sprayed with the spray amount A described later (i, ii), and then. Further, when the aircraft 1 continues to move backward, the third point P3 passes through the first point P1 (iii). At this time, since the current cycle is the spray stop cycle, the liquid agent is not sprayed (No in step S5).

Therefore, while the aircraft 1 is moving backward, it is possible to determine whether or not the first point P1 corresponds to the third range as described above, and repeatedly spray the liquid agent at an appropriate time.
On the other hand, in view of FIGS. 5 (v) to (viii), when the traveling direction of the aircraft 1 is switched during the spraying of the liquid agent and the advance is started, the first point P1 is in the first range ( v, vi) In principle, do not spray the liquid (Yes in step S20 and No in step S30).

When the aircraft 1 continues to move forward after that, the point that was the second point P2 when the traveling direction of the aircraft 1 is switched passes through the first point P1 (vii). At this time, since the first point P1 is in the second range, the liquid agent is sprayed with the spray amount B described later (Yes in step S20 and Yes in step S30).

After that, when the aircraft 1 continues to move forward, the point that was the third point P3 passes through the first point P1 (viii). At this time, since the first point P1 is in the third range, the liquid agent is sprayed with the spray amount A (No in step S20). After that, the same liquid agent spray control as in FIG. 4 is repeatedly executed, and when the traveling direction of the machine body 1 is switched during the liquid agent spraying, the liquid agent spray control in FIG. 5 is executed.

Therefore, while the traveling direction of the aircraft 1 is switched and the aircraft 1 is moving forward, it is determined whether the first point P1 corresponds to the first range to the third range as described above, and it is appropriate. The liquid can be sprayed at the right time. Therefore, the liquid agent can be sprayed on the rear wheels 4 at an appropriate time not only when the airframe 1 is moving forward and backward, but also after the traveling direction is switched.

Then, in step S40, even in the case corresponding to the first range, for example, after the liquid agent is finally sprayed so that the liquid agent attached to the surface of the rear wheel 4 evaporates and the effect of the liquid agent is reduced. When the elapsed time has passed the specified time (Yes in step S40) and when the specified time has not passed and the liquid agent is sufficiently adhered to the surface of the rear wheel 4 (No in step S40). It can be further determined.

As a result, as described above (v, vi), even if the first point P1 is in the first range, the time elapsed since the last spraying of the liquid agent may have passed the specified time. Therefore, the liquid agent can be sprayed with the spray amount C described later (Yes in step S40).

Returning to FIG. 3, in steps S50 to S70, the amount of the liquid agent (spray amount) to be sprayed from the liquid agent spray nozzle 33 is variably set by the spray amount setting unit 71, and the process proceeds to step S90. As a specific example, in the spray amount A (step S50), the amount (set amount) of the liquid agent sprayed from the liquid agent spray nozzle 33 when the opening degree of the valve opening portion 43a of the control valve 43 is fully opened is set as the spray amount. Then, in the spray amount B (step S60), for example, 70% of the set amount is set as the spray amount, and in the spray amount C (step S70), for example, 50% of the set amount is set as the spray amount.

On the other hand, in step S80, since the first point P1 is in the first range (v, vi), in principle, the liquid agent is not sprayed (Yes in step S20 and No in step S30).

Then, in step S90, the liquid agent spray control unit 75 executes the spray control according to the spray amount set by the spray amount setting unit 71. At this time, the liquid agent spray control unit 75 can adjust the spray amount by adjusting the opening degree of the control valve 43.

As a result, in steps S50 to S90, the spray amount is set (steps S50 to S70) based on the contents determined in steps S20 to S40, and the liquid agent is sprayed at the set spray amount or the spraying is stopped (spraying is stopped (steps S50 to S70). Step S80) can be performed.

As described above, in the airframe 1 according to the present invention, the front wheels 3 and the rear wheels 4 for compacting the road surface 100, and the liquid agent spraying device 9 for spraying the liquid agent on the first point P1 of the front wheels 3 and the rear wheels 4 are provided. The provided airframe 1 has a controller 55 that controls the liquid agent spraying device 9, and the controller 55 determines the spraying range of the front wheels 3 and the rear wheels 4 as the range in which the liquid agent is sprayed by the liquid agent spraying device 9. The spray range determination unit 63 includes the liquid agent spray control unit 75 that executes and stops the spraying of the liquid agent by the liquid agent spray device 9, and the liquid agent spray control unit 75 determines the first point P1 by the spray range determination unit 63. In the first range, which is the spray range, the liquid agent spraying device 9 is stopped.

Therefore, the spray range determination unit 63 determines the spray range as the range in which the liquid agent is sprayed, and when the first point P1 is the spray range, the liquid agent spray device 9 is stopped in principle. When the traveling direction is switched in the front-rear direction, it is possible to prevent further spraying of the liquid agent in the first range in which the liquid agent has already been sprayed.

Then, it has a rotation angle sensor 51 that detects the rotation angle of the rear wheel 4, and the spray range determination unit 63 sets the spray timing by the liquid agent spray control unit 75 and the rotation angle of the rear wheel 4 detected by the rotation angle sensor 51. The spray range is determined based on this.

Therefore, when determining the spray range, the determination is made based on the spray timing by the liquid agent spray control unit 75 and the rotation angles of the front wheels 3 and the rear wheels 4 detected by the rotation angle sensor 51. Therefore, the spray range determination unit 63 It is possible to improve the accuracy of the spray range determined by.

Then, the controller 55 includes a grounding range determination unit 65 for determining a second range as a range grounded to the road surface 100 in the spray range, and the liquid agent spray control unit 75 has a grounding range determination unit 65 at the first point P1. In the second range determined by the above, the liquid agent spraying device 9 is used to spray the liquid agent. Therefore, even in the spray range, the range in which the amount of the liquid agent adhered is reduced by touching the road surface 100 , The liquid agent can be sprayed again.

Then, the controller 55 includes a time measuring unit 73 that measures the time measured as the time elapsed from the time when the liquid agent is sprayed by the liquid agent spraying device 9, and the liquid agent spray control unit 75 includes the time measuring unit 73 timed by the measuring unit 73. When the specified time is exceeded, the liquid agent is sprayed even in the first range. Therefore, for example, assuming that the specified time is a time during which the liquid agent attached to the front wheels 3 and the rear wheels 4 evaporates. When the time counting time exceeds the specified time, the liquid agent is not attached to the front wheels 3 and the rear wheels 4, so that the liquid agent can be sprayed again even in the spray range.

The controller 55 includes a spray amount setting unit 71 that variably sets the amount of the liquid agent sprayed by the liquid agent spraying device 9, and the liquid agent spray control unit 75 sprays the liquid agent when the liquid agent spraying device 9 executes spraying. Since the liquid agent is sprayed according to the amount of the liquid agent variably set by the amount setting unit 71, for example, by adjusting the amount of the liquid agent to be sprayed on the second range or the first range in the spray range, the liquid agent is sprayed excessively. Can be suppressed.

A water spraying device 7 for spraying water on the front wheels 3 and the rear wheels 4 is provided, the controller 55 includes a water spray control unit 77 for executing and stopping water spraying by the water spraying device 7, and the liquid agent is the front wheels 3. It is an adhesion preventive agent that prevents the pavement material of the road surface 100 from adhering to the rear wheels 4, and the liquid agent spray control unit 75 is executed by the water spray control unit 77 when the liquid agent is sprayed by the liquid agent spray device 9. Since the spraying of water by the water spraying device 7 is stopped, it is possible to prevent the liquid agent, which is an adhesion preventive agent, from mixing with water.

This is the end of the description of the compaction machine according to the present invention, 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 liquid agent spraying device 9 is controlled to perform the control as in this routine, but the same control may be executed for the water spraying device 7.

Further, in the present embodiment, the rotation angle sensor 51 is provided on the rear wheel 4, but it may be provided on the front wheel 3.
Further, in the present embodiment, the spray range is determined based on the rotation angle of the rear wheels 4, but the determination may be made based on the position information of GNSS (Global Navigation Satellite System).

Further, in the present embodiment, the spraying of the liquid agent by the liquid agent spraying device 9 is executed and stopped by adjusting the opening degree of the control valve 43, but the rotation speed of the liquid agent pump 41, etc., does not depend on the control valve 43. May be adjusted to adjust the spray amount of the liquid agent and to switch the execution and stop of spraying.

Further, in the present embodiment, the spray range determination unit 63 determines the range to which the liquid agent sprayed from the liquid agent spray nozzle 33 adheres while the rear wheel 4 makes one rotation as the spray range, but the front wheel 3 The range to which the liquid agent is attached may be determined as the spray range.

1 Aircraft (compacting machine)
3 Front wheel (roller)
4 Rear wheel (roller)
7 Water sprayer 9 Liquid sprayer (liquid sprayer)
51 Rotation angle sensor 55 Controller 61 Rotation angle calculation unit 63 Spray range determination unit 65 Grounding range determination unit 69 Storage unit 71 Spray amount setting unit 73 Timekeeping unit 75 Liquid agent spray control unit (liquid spray control unit)
77 Water spray control unit

Claims (6)

Rollers that compact the road surface and
In a compaction machine provided with a liquid spraying device for spraying a liquid at a predetermined position on the roller.
It has a controller that controls the liquid spraying device.
The controller
Among the rollers, a spray range determination unit that determines a spray range as a range in which the liquid is sprayed by the liquid spray device, and a spray range determination unit.
Includes a liquid spray control unit that executes and stops spraying the liquid by the liquid spray device.
The liquid spray control unit is a compaction machine characterized in that the liquid spray device is stopped when the predetermined point is in the spray range determined by the spray range determination unit. It has a rotation angle sensor that detects the rotation angle of the roller.
The spray range determination unit determines the spray range based on the spray timing by the liquid spray control unit and the rotation angle of the roller detected by the rotation angle sensor.
The compaction machine according to claim 1. The controller includes a ground contact range determination unit that determines a ground contact range as a range grounded on the road surface in the spray range.
The liquid spray control unit executes spraying of the liquid by the liquid spray device when the predetermined point is in the ground contact range determined by the ground contact range determination unit.
The compaction machine according to claim 1. The controller includes a time unit that measures the time taken as the time elapsed from the time when the liquid was sprayed by the liquid spraying device.
When the timed time measured by the timekeeping unit exceeds a predetermined time, the liquid spray control unit also sprays the liquid over the spraying range.
The compaction machine according to claim 1. The controller includes a spray amount setting unit that variably sets the amount of liquid sprayed by the liquid spray device.
When the liquid spray control unit sprays the liquid by the liquid spray device, the liquid spray control unit sprays the liquid according to the amount of the liquid variably set by the spray amount setting unit.
The compaction machine according to claim 3 or 4. A water spraying device for spraying water on the rollers is provided.
The controller includes a water spray control unit that executes and stops spraying the water by the water spray device.
The liquid is an adhesion inhibitor that prevents the road surface pavement material from adhering to the roller.
When the liquid spray control unit executes the spraying of the liquid by the liquid spray device, the liquid spray control unit stops the spraying of the water by the water spray device executed by the water spray control unit.
The compaction machine according to claim 1.

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