JPH0819644B2 - Road cutting mixer - Google Patents

Description

Description: “Industrial field of application” The present invention relates to an on-road cutting mixer used when a paved road surface is repaired by a road surface reclaiming method, and relates to an admixture material for controlling the supply amount of an admixture material. The present invention relates to a supply amount control device.

“Conventional technology” Conventionally, when repairing an existing asphalt pavement road surface by the road surface layer reproduction method, a road cutting mixer is used, but this road cutting mixer is a cutter that cuts and scratches the pavement road surface. Device (rotary scalifier),
A hopper device that accepts new mix materials input from a dump truck, a feeder device that conveys the scraped material disentangled by the cutter device and the new mix material in the hopper device by a predetermined amount, and the feeder device Mixer device that mixes the scraped loosening material and the new mixture, a sprinkling device that evenly sends the mixed material mixed by the mixer device to the road surface, and a floor that spreads and spreads the mixed material sprinkled on the road surface. It has a structure in which a leveling device and a self-propelled vehicle are mounted.

[Problems to be Solved by the Invention] In the above-described conventional road cutting mixer, a new feed amount is supplied to the mixer device by manually adjusting the feeding amount (conveying speed) per unit time of the feeder device. Since the supply amount of the mix material was adjusted, the operator had to constantly visually check the supply state of the new mix material to the mixer device and manually adjust the feed amount of the feeder device. However, there is a problem in that the operation requires skill and a great amount of work effort is spent.
In addition, if the operator's skill level is low and the supply amount of the new mixture supplied to the mixer device is not appropriate, the supply amount of the mixed material mixed by the mixer device and sent to the road surface by the sprinkling device is reduced. It is not constant, and as a result, the flatness of the reproduced road surface is impaired, and the quality of the road deteriorates.

The present invention has been made in view of the above circumstances, keeping the supply amount of the mixed material sent to the road surface at an appropriate amount, and capable of constructing a road of a constant quality, and scraping the mixed material. It is an object of the present invention to provide a road cutting mixer capable of preventing the quality of roads from being deteriorated by preventing the ratio of materials from exceeding a predetermined value.

[Means for Solving the Problems] In order to achieve the above object, in the present invention, a part of the scraping material that is scraped by the cutter is pushed out to the side of the vehicle, and a pulling device that cannot be pushed out by the pulling device. An old mixture material feeder device for picking up and conveying the scraped material, a new mixture material feeder device for conveying the new mixture material and optionally setting the conveyance amount of the new mixture material, and an old mixture material feeder A mixer device that mixes the scraped material supplied through the device with the new composite material supplied by the new composite material feeder device, and a leveling device that spreads and mixes the mixed material mixed by the mixer device on the road surface. A road cutting mixer having: a measuring means for measuring a supply amount of a new mixture supplied to the mixer device; and a construction starting position to a present position. Distance calculation means for calculating the calculated distance, storage means for storing the expected new mixture supply integrated amount along the planned construction route obtained in advance by the preliminary survey in association with the integrated construction distance, and calculated by the distance calculation means The expected new composite material supply integrated amount corresponding to the current construction total distance is read from the storage means, and the actual new combination obtained by integrating the expected new composite material supply integrated amount and the weighing result of the measuring means. Compare the material supply integrated amount, and based on this comparison result,
And a control unit for controlling the transport amount of the new composite material by the new composite material feeder device.

[Operation] According to the road cutting mixer of the present invention, the expected new mixture supply integrated amount along the planned construction route obtained in advance by the pre-construction preliminary survey is stored in the storage means in association with the integrated construction distance. Therefore, at the time of actual construction, the expected new composite material supply integrated amount corresponding to the current construction integrated distance is read out from the storage means according to the progress of the road surface repair work, and this expected new composite material supply The integrated amount is compared with the actual new compound material supply integrated amount, and the transport amount of the new compound material feeder device is controlled based on this comparison result. The supply amount of the mix material and the supply amount of the mixed material sent to the road surface are adjusted to an appropriate amount according to the actual road surface condition, and as a result, the operator constantly monitors the supply condition of the new mix material. , Of the feeder device for new mix This eliminates the need for skillful operation techniques such as manually adjusting the transfer speed, thus reducing the work effort.

Further, regardless of the skill level of the operator, the supply amount of the new mixture material supplied to the mixer device is always maintained at an appropriate amount, and as a result, the regenerated road surface is flattened and the composition is stabilized. , Improve the quality of the road.

Further, in the old compound material feeder device, since the scraping and disintegrating material after a part of which has been pushed away to the side of the vehicle by the extracting device is put into the mixer device, by driving such an extracting device, It is possible to prevent the quality of the road from being deteriorated by preventing the ratio of the scraping material in the mixed material from exceeding a predetermined value. As an example, when partial compensation called patching is performed on the road, the amount of scraping material to be scraped by the cutter temporarily increases. Thus, if a portion of the scraping and disintegrating material is pushed away to the side of the vehicle, it is possible to prevent the ratio of the scraping and disintegrating material in the mixed material from exceeding a predetermined value, and prevent deterioration of road quality. it can.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of an electric and hydraulic circuit of a mixed material supply amount control device for a road cutting mixer according to an embodiment of the present invention, and FIG. 2 shows a configuration of a road cutting mixer according to the embodiment. It is a side view.

Here, first of all, the external configuration of the on-road cutting mixer will be described with reference to FIG. In FIG. 2, 1 is a preceding self-propelled vehicle, 2 is a succeeding self-propelled vehicle, and these two self-propelled vehicles 1 and 2 are as shown in the same figure at the time of paving road surface repair work. Lined up in the vertical direction, traveling at a low speed in the direction of arrow F (forward) at a constant distance,
When the cargo is unloaded from a transportation trailer or the like and headed to a work site, or when returning from the work site to a transportation trailer, each of them travels independently.

A hopper device 3 for receiving a new mixture fed by a dump truck or the like is provided in the front part of the preceding self-propelled vehicle 1. The hopper device 3 is mounted on the left and right so as to open and close upward. It is composed of a pair of wings 4, 4 and a hydraulic drive mechanism for adjusting the opening and closing angles of the wings 4, 4.

A feeder device 5 that extends obliquely rearward and upward from below the hopper device 3 is provided in the center of the vehicle 1 in the width direction. With this feeder device 5, the new mixture material fed into the hopper device 3 is rearward. To be transported to. The feeder device 5 is configured to drive a transport chain by a hydraulic motor 5a (see FIG. 1) described later. By increasing or decreasing the flow rate of the hydraulic oil supplied to the hydraulic motor 5a, a new mixture material is obtained. The carrying amount of can be set arbitrarily within a fixed range.

A pair of left and right front wheels 6, 6 are attached to a vehicle frame below the hopper device 3 so as to be rotatable and rotatable in a horizontal plane. These front wheels 6, 6 are a steering wheel provided in a driver's seat. The direction is changed by the hydraulic drive mechanism that operates in accordance with the rotating operation of 7, and thereby the traveling direction is changed.

A heating device 8 for preheating an existing asphalt pavement road surface is movably supported on the vehicle frame behind the front wheels 6 and 6, and the heating device 8 is moved up and down by a hydraulic cylinder 9. There is.

On the vehicle frame behind the heating device 8, a cutter device 10 for cutting and scraping the asphalt pavement road surface preheated by the heating device 8 is provided. The cutter device 10 includes a pair of telescopic cutters 11 and 1 which can be freely moved in and out in the width direction of the self-propelled vehicle 1 so that the scraping width can be changed.
1 and a fixed cutter 12 provided behind these telescopic cutters 11 and 11, and these telescopic cutters 11 and 11 and the fixed cutter 12 are respectively supported by a support member 13 provided on the vehicle frame so as to be vertically movable. It is rotatably supported. The support member 13 is moved up and down by a hydraulic cylinder 16 so that the raking depth can be adjusted. The expandable cutters 11 and 11 are formed by fixing a large number of bits on the peripheral surface of a cylindrical rotary drum, and are driven to rotate by a motor directly connected to the rotary shaft of the rotary drum. Similarly, the fixed cutter 12 is
A large number of bits are fixed on the peripheral surface of a cylindrical rotating drum, and the motor is directly connected to the rotating shaft of the rotating drum so that it can be driven to rotate in the opposite direction to the telescopic cutters 11, 11. There is.

A pair of left and right drive wheels 14, 14 are rotatably provided on the vehicle frame behind the cutter device 10, and these drive wheels 14, 14 are rotationally driven by a hydraulic motor (not shown) and a rear wheel drive mechanism. It has become so.

Further, at the rear part of the self-propelled vehicle 1, a transfer feeder device 18 for delivering the new mixture material conveyed by the feeder device 5 to the succeeding self-propelled vehicle 2 is provided. This transfer feeder device 18 is capable of adjusting the height of the discharge portion 18a at the rear end by a hydraulic cylinder 19, and the discharge portion 18a of the transfer feeder device 18 follows when paving the road surface. It is located above the input chute 20 of the vehicle 2.

On the other hand, at the front end of the following self-propelled vehicle 2, a pickup device 21 for pushing the scraped and loosened material scraped by the cutter device 10 of the preceding self-propelled vehicle 1 to the side of the road surface, and a pickup for scooping up the scraped and loosened material. A feeder 22 is provided.

In addition, on the road, when a partial repair called patching is performed, the amount of the scraping material to be scraped by the cutter device 10 is temporarily increased, but at this time, by the extracting device. If a part of the scraping and disintegrating material is pushed away to the side of the road surface, it is possible to prevent the ratio of the scraping and disintegrating material in the mixed material from exceeding a predetermined value.

The scraped and loosened material scooped up by the pickup feeder 22 is conveyed in the casing 23 obliquely rearward and upward, and is discharged from an opening formed at the rear end of the casing 23.

Behind the pick-up feeder 22, the scraping material discharged from the opening of the casing 23 is conveyed obliquely rearward and upward, and the weight of the scraping material being conveyed (=
Weighing feeder device 24 for measuring the transport amount or supply amount)
Is provided. A front end portion 24a of the weighing feeder device 24 is rotatably attached to a vehicle frame up and down, and a rear end portion 24b thereof is supported via a weighing mechanism 25 having a load cell for weighing.

Above the weighing feeder device 24, the transfer feeder device 18
There is provided a weighing feeder device 26 for transporting the new mixed material discharged from the rearward obliquely upward direction and weighing the weight (= transported amount or supplied amount) of the new mixed material being transported. Similar to the weighing feeder device 24, the weighing feeder device 26 has a front end portion 26a attached to the vehicle frame so as to be vertically rotatable, and a rear end portion 26b thereof is attached to the load cell 2 for weighing.
It is supported via a weighing mechanism 27 having 7a (see FIG. 1).

Then, the scraped and loosened material and the new mixture material respectively conveyed by the weighing feeder devices 24 and 26 are put into a mixer device 28 provided behind the respective weighing feeder devices 24 and 26. This mixer device 28 is called a two-axis pug mill continuous mixer, and is formed by radially projecting a plurality of paddles on two rotary shafts provided in a casing and extending in the vehicle front-rear direction. By rotationally driving the rotary shaft of the book, the scraping material fed into the feeding chute 29 and the new mixture are mixed by the paddle, and then the mixed material is discharged from the discharge port formed at the rear part of the casing. It has become.

Behind the mixer device 28, there is provided a sprinkling device 30 for sending the mixed material discharged from the discharge port of the casing of the mixer device 28 to the road surface. This dispensing device 30
Is a vehicle that extends in the width direction of the vehicle and is rotatably supported by a body frame so that the screw can be moved up and down.By rotating the screw, the mixed material is transferred in the vehicle width direction and on the road surface. It is designed to be delivered evenly to

Behind the spreading device 30, a spreading and leveling device 31 for spreading and stiffening the mixed material sprinkled on the road surface is provided.

A pair of left and right drive wheels 34, 34 are rotatably provided on the vehicle frame in front of the scraping device 30, and these drive wheels 34, 34 are rotated by a hydraulic motor and a rear wheel drive mechanism (not shown). Further, a pair of left and right front wheels 36, 36 are attached to the vehicle frame behind the pickup feeder 22 so as to be rotatable and rotatable in a horizontal plane. The directions of the wheels 36, 36 are changed by a hydraulic drive mechanism that operates in response to a rotating operation of a steering wheel 37 provided in the driver's seat.

Next, with reference to FIG. 1, the configuration of the mixture material supply amount control device of the above-described road cutting mixer will be described. In FIG. 1, reference numeral 40 is a diesel engine mounted on the preceding self-propelled vehicle 1, and a hydraulic pump 42 is driven by the diesel engine 40. The hydraulic oil discharged from the hydraulic pump 42 is guided to the electromagnetic proportional control valve 44 by the pressure pipe 43, the flow rate is adjusted by the electromagnetic proportional control valve 44, and then the conveying chain of the feeder device 5 is driven by the pressure pipe 45. Is guided to the hydraulic motor 5a. Further, the hydraulic oil discharged from the hydraulic motor 5 a is guided to the electromagnetic proportional control valve 44 by the return pipe 47, then returned to the hydraulic oil tank 49 by the return pipe 48, and further stored in the hydraulic oil tank 49. The working oil is sucked in the piping
It is adapted to be guided to the hydraulic pump 42 by 50.

The electromagnetic proportional control valve 44 controls the flow rate of the hydraulic oil by moving the poppet or spool by an electromagnet, and has a property that the electromagnetic force is substantially proportional to the magnitude of the exciting current supplied to the coil of the electromagnet. We are using. That is, within a certain range, the larger the exciting current supplied to the electromagnetic proportional control valve 44, the larger the flow rate of the hydraulic oil passing through.

Reference numeral 56 denotes a preceding vehicle controller that controls each part of the preceding vehicle 1, and includes a CPU (central processing unit) that performs various calculations, a ROM (read only memory) that stores programs used in the CPU, and data. R for temporary holding
Mainly composed of a microcomputer consisting of AM (random access memory) and an I / O (input / output) interface for exchanging various data. In addition, the following self-propelled vehicle 2 and various data are connected via a communication cable 58. Serial transmission circuit for transmission, D / A (digital / analog) converter that converts the current command value (digital signal) E transmitted from the following self-propelled vehicle 2 to an analog signal and supplies it to the proportional valve amplifier 59. Etc. are provided.

Both ends of the communication cable 58 can be easily attached and detached by means of connectors, and are connected during paving road surface repair work and detached during forwarding.
Further, the proportional valve amplifier 59 supplies an exciting current corresponding to the current command value (voltage signal) E output from the controller 56 to the electromagnetic proportional control valve 44.

On the other hand, 60 is a storage device such as an IC card, which is configured by a RAM backed up by a battery, an EEPROM (electrically erasable programmable ROM), or the like. In this storage device 60, the expected new mixture material supply cumulative amount Q ₀ [ton] along the planned construction route obtained in advance by the pre-construction survey is stored in association with the cumulative construction distance L [m]. There is. That is, the road surface condition of the planned construction route is investigated by the preliminary survey, and the expected new compound material supply integrated amount, which is the expected amount of new material mixed according to each road surface condition
As shown in FIG. 3, Q ₀ is stored in the storage device 60 in association with the cumulative construction distance L from the construction start position (L = 0).

Reference numeral 61 is a correction factor setting device for the operator to manually set a correction factor α described later, and is provided on the operation panel of the driver's seat of the following self-propelled vehicle 2. Reference numeral 65 denotes an incremental type rotary encoder, which outputs pulse signals at time intervals according to the rotation speed of the drive wheels 34. This pulse signal is supplied to the following vehicle controller 66 described later,
The traveling distance detection counter in the controller 66 counts the number of pulses supplied after the construction start time, and thereby the construction cumulative distance L of the self-propelled vehicle 2 is detected.

The following vehicle controller 66 controls each part of the following vehicle 2. As with the preceding vehicle controller 56 described above, the CP
Mainly composed of a microcomputer consisting of U, ROM, RAM, and I / O interface, and also counts pulse signals supplied from the rotary encoder 65 and counts according to the traveling speed of the self-propelled vehicle 2. A speed detection counter that outputs data, a serial transmission circuit that performs various data transmissions to the preceding self-propelled vehicle 1 via the communication cable 58, and a weighing signal (analog signal) of the new mixture supplied from the weighing load cell 27a. ) Is converted into a digital signal is provided with an A / D converter and the like.

The operation of the composite material supply amount control device of the road cutting mixer configured as described above will be described with reference to FIG.

First, in step SP1 shown in FIG. 4, the CPU in the following vehicle controller 66 takes in the count value of the running distance detection counter at the present time as the current construction integrated distance L, and in the next step SP2, from the storage device 60. , The predicted new compound material supply integrated amount Q ₀ [ton] corresponding to the current construction integrated distance L [m] is read. And the next step SP3
On the basis of the weighing signal of the new mixture supplied from the weighing load cell 27a of the weighing feeder 26, the new amount which is the integrated amount of the new mixture supplied to the mixer device 28 from the start of construction to the present is new. calculating the受合material supply integrated amount Q _1.

In the next step SP4, the correction rate A is calculated from the following equation (1).
To calculate.

A = Q ₀ / Q ₁ (1) Then, in the next step SP5, the correction factor setter 61
The correction factor α set in is taken in and the next step SP
In step 6, the correction rate A is multiplied by the correction rate α to calculate the corrected correction rate A ′, and in the next step SP7, the current current command value E ₀ is multiplied by the correction rate A ′ to obtain a new correction value A ′. The current command value E is obtained.

The current command value E found in step SP7 above
Is transmitted to the preceding vehicle controller 56 via the communication cable 58 in the next step SP8.

In the preceding vehicle controller 56, the current command value E transmitted from the following vehicle controller 66 is converted into an analog signal (voltage signal) by the D / A converter, and then the proportional valve amplifier 59.
Supply to Since the proportional valve amplifier 59 supplies the exciting current corresponding to the current command value E to the electromagnetic proportional control valve 44, the flow rate of the hydraulic oil supplied to the hydraulic motor 5a via the electromagnetic proportional control valve 44 is the current command. The value is adjusted according to the value E.
As a result, the feeding amount of the new mixture carried by the feeder device 5 from the inside of the hopper device 3 is controlled according to the new current command value E calculated by the following vehicle controller 66.

Thus, as the road surface repair work progresses, the storage device
The expected new composite material supply integrated amount Q ₀ corresponding to the current construction total distance L is read out from 60, and this expected new composite material supply integrated amount
The correction rate A is calculated from Q ₀ and the actual new mixture supply integrated amount Q ₁ calculated based on the weighing signal of the weighing load cell 27a, and the correction rate A is multiplied by the correction rate α by manual adjustment. , The current command value E that determines the carry amount of the feeder device 5 is controlled based on the corrected correction rate A'obtained by this, so that the supply amount of the new mixture material supplied to the mixer device 28 is actually It is adjusted to an appropriate amount according to the road surface condition.
Thereby, the worker occasionally monitors the staying condition of the mixed material that is sent out on the road surface and stays in front of the spreading and leveling device 31, and manually adjusts the correction factor setting device 61 as necessary to make a slight correction. All that is required is to reduce the work effort.

"Effect of the Invention" As described in detail above, according to the road cutting mixer of the present invention, the expected new mixture supply integrated amount along the planned construction route obtained in advance by the pre-construction survey is calculated as the integrated cumulative distance. By storing in the storage means in correspondence with the above, at the time of actual construction, according to the progress of road surface repair work,
The expected new composite material supply integrated amount corresponding to the current construction integrated distance is read from the storage means, and this expected new composite material supply integrated amount is compared with the actual new composite material supply integrated amount. The feed amount of the new compound material feeder device is controlled based on this, so that the amount of new compound material supplied to the mixer device and the amount of mixed material supplied to the road surface are It is adjusted to an appropriate amount according to the road surface condition, and as a result, an operator who constantly monitors the supply state of the new mix material and requires a skill such as manually adjusting the transport speed of the feeder for the new mix material. It is possible to obtain the effect that the technique becomes unnecessary and the work labor is reduced.

Further, regardless of the skill level of the operator, the supply amount of the new mixture material supplied to the mixer device is always maintained at an appropriate amount, and as a result, the regenerated road surface is flattened and the composition is stabilized. The effect of improving the quality of the road can be obtained.

Further, in the old compound material feeder device, since the scraping and disintegrating material after a part of which has been pushed away to the side of the vehicle by the extracting device is put into the mixer device, by driving such an extracting device, It is possible to prevent the quality of the road from being deteriorated by preventing the ratio of the scraping material in the mixed material from exceeding a predetermined value. As an example, when partial repair called patching is performed on the road, the amount of scraping material to be scraped by the cutter temporarily increases. Thus, if a part of the scraping and disintegrating material is pushed away to the side of the vehicle, it is possible to prevent the ratio of the scraping and disintegrating material in the mixed material from exceeding a predetermined value, thereby preventing deterioration of road quality. The effect is obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an electric and hydraulic circuit of a mixed material supply amount control device for a road cutting mixer according to an embodiment of the present invention, and FIG. 2 is a side view showing an external configuration of the road cutting mixer. FIG. 3 is a graph showing the relationship between the expected integrated amount of new mixture material supply and the cumulative installation distance stored in advance in a storage device provided in the on-road cutting mixer, and FIG. 4 is an embodiment of the present invention. 5 is a flowchart for explaining the operation of FIG. 5 ... Feeder device (new mix material feeder device), 5a ... Hydraulic motor, 22 ... Pickup feeder (old mix material feeder device), 26 ... Weighing feeder device, 27a ... Weighing load cell (weighing means) ), 28 ... Mixer device, 44 ... Electromagnetic proportional control valve, 56 ... Leading vehicle controller, 59 ... Proportional valve amplifier, 60 ... Storage device (storage means), 65 ... Rotary encoder, 66 ... Vehicle controller (control means and distance calculation means).

Front page continuation (72) Inventor Yoshimitsu Hashimoto 1-19-11 Kyobashi, Chuo-ku, Tokyo Within Japan Tamaido Co., Ltd. (72) Inventor Mikiji Matsui 1-1-19-11 Kyobashi, Chuo-ku, Tokyo Japan Tamaido Co., Ltd. (56) Bibliography Shoko 63-2485 (JP, Y2)

Claims (1)

[Claims] Claim: What is claimed is: 1. An extraction device for pushing a part of the scraped material unraveled by a cutter to the side of the vehicle, and a feeder device for the old mixture material for picking up and conveying the scraped material that has not been pushed away by the extracting device. And a feeder for a new mixture, which conveys the new mixture and can arbitrarily set the conveying amount of the new mixture, a scraping material supplied through the feeder for the old mixture, and a feeder for the new mixture An on-road cutting mixer having a mixer device that mixes the new mixture supplied by the device and a spreader that spreads and mixes the mixed material mixed by the mixer device on a road surface, and supplies the mixer device. Measured means for measuring the amount of supply of the new mixture, distance calculation means for calculating the cumulative distance of construction from the construction start position to the current position, A storage unit that stores the obtained integrated amount of expected new material supply along the planned construction route in association with the integrated work distance, and a predicted new material supply that corresponds to the current integrated work distance calculated by the distance calculation unit. The integrated amount is read out from the storage means, and this expected new composite material supply integrated amount is compared with the actual new composite material supply integrated amount obtained by integrating the weighing results of the weighing means, and based on this comparison result And a control means for controlling the conveying amount of the new composite material by the new composite material feeder device.