JPS63110301A - Road surface layer regenerating machine and additive scattering apparatus - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a road surface regeneration machine and an additive spraying device, and particularly to a method for adjusting the amount of additive sprayed according to the running speed of the road surface regeneration machine. This article relates to a road surface regeneration machine and an additive spraying device that can be used.

[Conventional technology]

Conventionally, road resurfacing machines used to repair asphalt-paved roads generally have a heater installed in the lower part of the self-propelled vehicle body.

Scarifier, rotor, screw spreader.

Screed etc. are arranged sequentially from the front of the car body, and an additive spraying nozzle is arranged behind the scarifier.

In the above configuration, the road surface regeneration machine moves along the road that requires repair, heats the asphalt pavement surface layer with a heater, scrapes up the heated and softened pavement surface layer with a scarifier, and removes the sown pavement. A softening agent is sprayed onto the nodule from the nozzle of the additive spray pipe, agitated using a subsequent rotor device, width leveled using a screw spreader, and compacted using a screed.

[Problem that the invention seeks to solve]

In the conventional road surface regenerator, the softener is uniformly sprayed from the additive spraying nozzle in a fixed amount at a fixed speed. However, repair work is carried out regardless of whether it is cold or hot; for example, in cold weather, asphalt is hard and the temperature is low, so it is necessary to slow down the running speed of the regenerator to ensure that the road surface is sufficiently heated by the heater. Become.

As a result, the softener, which is sprayed in a fixed amount regardless of the speed of the regenerator, has the disadvantage of being oversprayed, which may result in uneven quality of the repaired pavement.

[Means for solving problems]

The present invention was developed for the purpose of solving the above-mentioned conventional drawbacks and providing a road surface regenerator and an additive spraying device that can spray softener according to the running speed of the road surface regenerator. , As a specific means, the rotor and screw spray rudder are installed in the lower part of the self-propelled vehicle body sequentially from the front. In a road surface regeneration machine equipped with a screed, two dispersion pipes each having a plurality of nozzles are disposed in the front part of the rotor and are long and parallel to each other in the vehicle width direction, and each dispersion pipe has a plurality of nozzles at the base end edge of the dispersion pipe. The proximal end of the dispersion pipe is connected to a feed pipe through an electromagnetic valve, and the feed pipe is equipped with a flow meter transmitter and a pump, and the proximal end of the feed pipe is connected to a tank mounted on the vehicle body. A control device is disposed on the vehicle body, and a speed detector disposed on the axle is connected to the control device, and the electromagnetic valve, flowmeter transmitter, and pump motor are each connected to the control device. A road surface regeneration machine characterized by being electrically connected and configured to control the rotation of a motor and the opening and closing of a solenoid valve according to vehicle speed.

(2) A feed pipe is connected from the additive tank placed on the car body of the road surface regenerator to multiple spray pipes placed below the car body, and a pump and a flow meter transmitter are interposed in the feed pipes. , an electromagnetic valve is interposed in each of the spray pipes, a control device is connected to the drive motor of the pump, and the control device detects the rotational speed of the electromagnetic valve, the flow meter transmitter, and the drive wheel. An addition characterized in that, when a speed detector is electrically connected and a detected value of the rotational speed of the driving wheel is input to a control device, the pump and the electromagnetic valve are controlled according to the rotational speed of the driving wheel. A chemical spraying device is constructed.

[Effect]

If necessary information is input into the control device when using the road surface regenerator, a speed detector detects the rotational speed of the drive wheels and inputs the detected value into the control device.

The control device performs comparison calculations with stored constants to control the rotational speed of the pump drive motor in accordance with the rotational speed of the drive wheels. Therefore, when the construction speed of the road surface regeneration machine is slow, the amount of additive sprayed from the spray pipe will decrease depending on the vehicle speed, or when the construction speed is high, the amount of additive sprayed from the spray pipe will decrease depending on the vehicle speed. The amount of additive can be increased, that is, the amount of additive sprayed over a certain area within a certain time can be maintained constant regardless of the vehicle speed.

〔Example〕

Embodiments of the present invention will be described based on the drawings. FIG. 1 is a side view of the road surface regenerator, and FIG. 2 is a block diagram of the additive spraying device.

Since the general structure of the road surface regenerator 1 is well known, the structure and operation will be briefly described.

The road surface regenerator 1 has a driving wheel 3 at the rear of the vehicle body 2 and a front wheel 4 at the front, and is driven like a normal car from a driver's seat 5 at the upper front of the vehicle body 2, and is used for repair work. Operate the device. In the lower part of the vehicle body 2, between the front wheels 4 and the drive wheels 3, a heater 6, a scarifier 7, a dispersion pipe 8.9, and a rotor device 10 are arranged in order from the front. The heater 6 is a cylinder 6A loaded on the upper part of the vehicle body 2.
This is a gas burner-type far infrared heater that is supplied with gas via a gas pipe (not shown), and can heat the asphalt pavement surface G at an atmosphere of around 250°C.

The scarifier 7 can be moved up and down by the operation of the cylinder 7A, and can scrape up the surface layer of the asphalt pavement surface G softened by the heater 6 to a depth of 5 to 6 aa.

The rotor device 10 has two rotors IOC and IOD that rotate forward and backward, arranged in a frame body 10B that can be moved up and down by cylinders IOA and IOA, and removes the asphalt pavement surface layer scraped by the scarifier 7. The nodules are broken down and the nozzles 8A and 9A of the above-mentioned spray pipe 8.9 are
Stir the softener sprayed from...

At the lower part of the vehicle body 2 behind the drive wheels 3, there are first screw spreaders 11. First screed 12. A second screed spreader 13° is provided with a second screed 14.

A hopper 15 is provided at the front upper part of the vehicle body 2 to store asphalt mixture for paving. A bar feeder 16 is disposed from the lower part of the hopper 15 to the front part of the second screed 14, and if necessary, asphalt mixture for paving is fed from the hopper 15 to the second screed through the bar feeder 16.
It is supplied to the road surface in front of the screed 14.

The second screuse spreader 13 scrapes the asphalt material for paving supplied onto the road surface toward the center of the vehicle body 2 so as not to overflow outside both ends of the vehicle body 2 in the width direction.
The screed 14 compacts the asphalt composite for paving to a predetermined thickness. The first screed spreader 11 scrapes up the lumps on the pavement surface layer scraped up by the scarifier 7 and the asphalt mixture for paving that passes under the first screed 12, and the first screed 12 temporarily Compact the area.

Both screw spreaders 11.13 each have a cylinder 11
It can be moved up and down by A and 13A.

Further, both screeds 12, 14 each have a built-in heater and a vibration exciter, and their heights can be adjusted by respective lifting arms 12A, 14A.

A control device 17 is mounted at the rear of the upper portion of the vehicle body 2.

An additive tank 18 is disposed below the control device 17 and contains a softening agent. From the tank 18 to the spray pipe 8
.

A pump 20 is installed in the middle of the feed pipe 19 near the tank on the vehicle body 2, and the drive shaft 2 of the pump 20
A motor 21 with a reduction gear is connected to the OA, and a magnetic sensor is incorporated in the reduction gear part of the motor 21, so that the rotation speed can be measured.

A flow meter transmitter 22 is disposed in the feed pipe 19 between the pump 20 and the dispersion pipe 9, and measures the flow rate from the pump 20 and transmits a measured value. Also, return pipe 1 of feed pipe 19
A solenoid valve 23 is provided at 9A.

A plurality of nozzles 8A are provided in both the dispersion pipes 8.9 in the longitudinal direction.
8A..., 9A, 9A... are arranged respectively, and
Electromagnetic valves 24 and 25 are arranged at the proximal edge of the dispersion pipe 8.9.

A contact piece 3B is attached to the axle 3A of the drive wheel 3, and a speed detector 26 using an encoder is provided at a position where the contact piece 3B can be intermittently approached when the contact piece 3B rotates with the rotation of the axle 3A. It is. The speed detector 26 is connected to the section 3.
A pulse signal is transmitted each time B approaches.

A flow meter 27 and a speed meter 28 are disposed at a location in the driver's seat 5 that can be easily seen by the driver. A control panel 17A is provided on the side of the box of the control device 17, and the control panel 17A is provided with a handle with a key 17B, an operation indicator light 17C, an on switch 17D, and an off switch 17E, which are connected to internal devices. ing. As shown in FIG. 2, an F/V converter 29 is disposed inside the box, and the speed detector 26 is connected to the F/V converter 29.
The pulse frequency transmitted from the converter converts the pulse frequency into a voltage corresponding to the frequency and outputs it to the I/V converter 3D and ratio controller 31. The I/V converter 30 converts the voltage change into a speed value, and the speed is displayed in analog form on the speedometer 28 connected thereto.

The ratio controller 31 is connected to the flow meter 27 and the PID regulator 32.

The ratio controller 31 is composed of a microcomputer, and a manual panel 31A is exposed on the control panel 17A, and control numerical values can be stored and input by operating input keys on the input panel 31A. In other words, input the constant setting values for repair, the amount of asphalt contained in the surface layer of the existing pavement to be repaired, the deterioration value of asphalt, the depth of N raising, and the standard running speed of the vehicle body, etc., digitally input. The speed transmitted from the speed detector 26 is compared with a set speed constant, and the amount of additive discharged based on the speed difference is calculated and output to the PID controller 32. PID controller 32
is connected to the I/V converter 33 and the flow rate converter 34. The PID controller 32 provides a control output with a numerical value proportional to the input from the ratio controller 31.

The flowmeter transmitter 22 is connected to a DM converter 34, the flowmeter transmitter 22 transmits the value measured by the flowmeter to the DM converter 34, and the DM converter 34 receives the input signal using the CPU. The data is transferred directly to the prD regulator 32 without any modification. PIDtI! The moderator 32 is the flow meter transmitter 22.
Also, the information input from the speed detector 26 is adjusted and output to the I/V converter 33.

An LA controller 35 is connected to the 1/V converter 33. The LA controller 35 automatically outputs a control signal according to the numerical signal sent from the 1/V converter 33, and controls the digital meter relay 36 and the motor 2 of the pump 20.
Connect to 1.

Therefore, the motor 21 is controlled to speed up or slow down its rotational speed in accordance with the rotational speed of the driving wheels 3. That is, since the ratio between the rotational speed of the motor 21 and the rotational speed of the driving wheels 3 is calculated in advance and is set and stored in the ratio controller 31, the rotational speed of the driving wheels 3 detected by the speed detector 26 is determined by the ratio controller 31. 31, the LA controller 3
5 controls the rotation speed of the motor 21 according to a predetermined ratio, and controls the discharge flow rate of the softener from the pump 20.

The flowmeter transmitter 22 measures the flow rate of the softener in the conduit 19 and feeds it back to the PID regulator 32 .

Further, the electromagnetic valves 23, 24, 25 are electrically connected to a digital meter relay 36, and when only one dispersion pipe 8.9 is required according to an output command from the PIDil1 regulator 32, one valve 25 is connected. When the vehicle is stopped, both valves 24 and 25 are closed and the return valve 23 is closed.
is operated to open.

At the bottom of the trench, a part of the pavement surface G to be repaired at the repair work site is sampled, and the asphalt content, deterioration, etc. in the pavement surface layer are measured in advance, and the data is transmitted to the control device 17. Digital input is performed by operating the key buttons on the input panel 31A exposed on the control panel 17'A. Furthermore, the depth of the surface layer to be scraped with the scarifier 7 is also input. Therefore, the rotational speed control constant of the motor 21 based on the rotational speed of the drive wheel 3 is stored and inputted in advance.

The work begins with the above steps. On the paved road surface G, a road surface heating vehicle advances as a preceding vehicle in order to heat the surface layer. After that, the present road surface regenerator 1 continues. The heater 6 additionally heats the surface layer. The scarifier 7 is lowered by operating the cylinder 7A so that the tip of the claw 7B is buried to a predetermined depth. Further, the rotor device 10 also has rotor IOC, IO
Cylinder 10 so that D is buried in the surface layer to a predetermined depth 9
A is activated to lower the rotor 10C110D, and the inside of the frame 10B is kept warm with a separate heater.

When the road surface regenerator 1 starts moving forward by driving the drive wheels 3, the surface layer is scraped up by the scarifier 7, and the nozzle 8A of the spray pipe 8.9 is applied onto the nodules of the scraped up surface layer.
・Asphalt softener is sprayed from 9A... The amount of the softener to be sprayed is controlled in accordance with the rotational speed of the drive wheels 3, such that when the rotation speed is high, the amount is large, and when it is slow, the amount is small, and in total, a predetermined amount is sprayed over a predetermined area.

The nodule on the surface layer where the softener was sprayed is the rear rotor mounting W10.
The leveling plate 10B is stirred by the rotor IOC, 100 of
The surface is leveled flat.

Next, the first screed screed 11 on the rear side uniformly flattens the nodules on the surface layer in the width direction of the road, and compacts them with the first screed 12. If this is sufficient for repair, the road surface is compacted and finished using another roller car that follows, but if it is necessary to replenish the surface layer with new asphalt mixture, it can be stored in the hopper 15. A certain asphalt composite material for paving is dropped behind the first screed 12 by the operation of the bar feeder 16, the new composite material is uniformly distributed in the width direction of the road surface by the second screed spreader 13, and the second screed material is Compact with screed 14. The material is then rolled and finished using a subsequent roller wheel.

As described above, the purpose of the present invention is to uniformly spray a certain amount of softener over a certain area of the road surface to be repaired, and for this purpose, the vehicle speed of the road surface regenerating machine is increased, for example, per minute. The drive of the pump is controlled depending on the speed detected by the speed detector so that the same amount is not discharged when the distance is 1 m or 8 m. That is, if the number of pulses transmitted by the speed detector 26 is, for example, 150/win when the vehicle speed is 1 m/min, the number of pulses when the vehicle speed is 8 m/min is 1200/sin. Therefore, if the flow rate of the additive at a vehicle speed of 1 m/win is 601/min, the flow rate of El/min must be maintained at a vehicle speed of 8a+/+win, and the control device has a pulse number of 120/min.
When a signal of 0/min is input, control is performed to increase the discharge flow rate of the pump 20 by a multiple of 150/akin.

As a result, regardless of whether the vehicle speed is fast or slow, the total flow rate of the additive per minute is not the same, and the same amount of additive is sprayed on the same area of the road surface regardless of the speed of the road surface regenerator. As a result, the quality of the regenerated pavement can be evenly and uniformly regenerated. Note that the additive is not limited to only a softener.

〔effect〕

The present invention has the following excellent effects.

(11) Since it is possible to spray a fixed amount of additive onto a fixed area of the road surface without being affected by the speed of the road surface regenerator,
Homogeneous surface layer regeneration is possible.

(2) By achieving homogeneous regeneration,
The durability of the paved portion can be maintained uniformly.

(3) The device has a simple structure and is easy to operate.

(4) Since the additive spraying device has a simple structure and is a unit, it can be easily attached to an existing road surface regeneration machine, and the performance of the road surface regeneration machine can be greatly improved at low cost. .

[Brief explanation of the drawing]

FIG. 1 is a side view of a road surface regenerator according to an embodiment of the present invention, and FIG. 2 is a block diagram of an additive spraying device. 1... Road surface regenerator 2... Vehicle body 3... Drive wheel 3A... Axle 3B... Section
4...Front wheel 5...Driver's seat 6...
Heater 7...Scarifier 8.9...Scatter pipe 8A, 9A...Nozzle 10...Loafing device 10
B... Frame body 10C, IOD... Rotor 10E... Leveling plate 11... First screed spreader 12... First screed

Claims (1)

[Scope of Claims] A road surface regeneration machine in which a rotor, a screw spreader, and a screed are arranged sequentially from the front in the lower part of a self-propelled vehicle body, in which two spray pipes each having a plurality of nozzles are installed in the front part of the rotor; In addition to being arranged long and parallel to the vehicle width direction, a solenoid valve is interposed at the proximal edge of each dispersion pipe, and the proximal end of the dispersion pipe is connected to a feed pipe, and a flowmeter transmitter is connected to the feed pipe. The proximal end of the conduit is connected to a tank disposed on the vehicle body, and a control device is disposed on the vehicle body, and a speed detector disposed on the axle is connected to the control device. The electromagnetic valve, the flow meter transmitter, and the pump motor are each electrically connected to a control device, and the rotation of the motor and the opening/closing of the electromagnetic valve are controlled according to the vehicle speed. Roadside surface regeneration machine. (2) Connect the feed pipe from the additive tank installed on the car body of the road surface regenerator to the plurality of spray pipes installed below the car body,
A pump and a flow meter transmitter are interposed in the feed pipe, an electromagnetic valve is interposed in each of the dispersion pipes, a control device is connected to the drive motor of the pump, and the control device is connected to the electromagnetic valve. A valve, a flowmeter transmitter, and a speed detector that detects the rotational speed of the driving wheels are electrically connected, and when the detected rotational speed of the driving wheel is input to the control device, the pump and the electromagnetic valve are connected to the rotational speed of the driving wheel. An additive spraying device characterized in that it is configured to control according to.