JP5641574B2 - Rolling machine - Google Patents

Description

  The present invention relates to a rolling machine that rolls in a work surface by a vehicle body that is operated by a boarded operator and applies pressure to the work surface of the work surface.

  In the embankment work, the rolling work is performed on the work surface of the embankment that has been embanked by a rolling machine. Many of these rolling compactors use a vehicle body that includes a driver's seat on which an operator can ride, such as a tire roller vehicle disclosed in Patent Document 1, and is configured with the compacting roller as a wheel. . In other words, by driving the vehicle body on the work surface area by an operator's operation, the rolling roller applies external force to the earth, sand, asphalt, etc., which becomes the work surface in the work surface area, and compacts the surface ( Rolling).

  Such a rolling operation is performed by repeating the rolling operation in which the vehicle main body is moved forward or backward in the work surface area. Therefore, the boarded operator performs safety checks during the rolling operation, including forward and reverse. In particular, when the vehicle body is moving backward, the operator on board turns from the driving posture facing forward to the rear and further to the surroundings while operating the driving equipment in the front, (Traveling direction) and its surroundings, or return to the driving posture forward to change driving operation.

  However, since the operator cannot keep gazing at the rear of the vehicle, the confirmation cannot be sure, and the vehicle main body may approach the outside of the work area without being aware of it. If the state where it is not noticed continues, the vehicle body may enter outside the work area and reach a dangerous state. In particular, when rolling on a hill that has been embanked, the outside of the work area is often stepped downward from the work surface, and the outside of the work area has a significant difference in level, such as a cliff. Often there is a dangerous spot outside the work area.

  For this reason, normally, in the embankment work, in order to ensure safety, the operator who has boarded the vehicle main body has been informed that the vehicle main body approaches the outside of the work surface area manually. In many cases, an operator is placed on the boundary outside the work area and the operator is notified by the operator's signal that the vehicle body is approaching outside the work area, or at the boundary of the work area. A plurality of pylons and tapes were stretched, and points with steps were emphasized to make it easier for the operator to recognize.

JP 2005-344288 A

However, the technique of arranging workers on the former work surface area and the boundary outside the area requires considerable personnel. Further, the latter method of arranging a plurality of pylons and tapes at the boundary of the work surface area requires a lot of labor and time including preparation and cleaning up. For this reason, it is not easy to secure a system for ensuring safety behind the vehicle.
SUMMARY OF THE INVENTION An object of the present invention is to provide a rolling machine capable of transmitting a situation in which the outside of a work surface is approaching from a vehicle body side to a boarding operator.

According to a first aspect of the present invention, in order to achieve the above object, a vehicle that rolls in a predetermined work surface area and rolls the work surface of the work surface area in accordance with an operation of a boarded operator. A transmitter that radiates a detection medium to a work surface in front of or behind the vehicle body close to the front or rear portion of the vehicle body, which is provided on the front or rear portion of the body so as to face down frontward or backward, respectively. When the detected amount in the work surface detection sensor is equal to or less than a predetermined threshold value , the work surface detection sensor includes a receiver that detects the detection medium that is emitted from the work surface and reflected from the work surface. And a notification unit that is provided in the vehicle main body and that notifies the operator that the outside of the work surface is approaching the vehicle main body upon receiving the determination of the out-of-range determination unit.

  As a result, even when the vehicle body is rolling forward or backward, even if the operator is not aware and approaches the outside of the work surface area, the notification by the vehicle-mounted notification means starts and informs the operator of the same situation. . The operator may perform an operation to stop the vehicle body when prompted by the notification, and stop the vehicle body. This prevents entry outside the work area without depending on other people.

In addition to the above-mentioned object, the invention of claim 2 further provides that the radiation point of the detection medium by the transmitter is an operator boarded on the vehicle body so that the vehicle body is stopped before entering the work area without any difficulty. However, it is determined to be a point that is visible at the shortest distance from the front or rear of the vehicle body without being blocked by the vehicle body.
That is, the detection medium is radiated along the line of sight used when determining the stop position of the vehicle body in the rolling operation, so that the operator can stop the vehicle body as usual after receiving the notification by the notification means. As long as the operation is performed, entry outside the work surface area can be prevented without difficulty.

In addition to the above-mentioned object, the invention of claim 3 further notifies that the operator clearly recognizes when the rolling operation is performed on the work surface area and when the outside of the work surface area is approaching. The means is configured to have a notification device that notifies when the rolling operation is performed in the work surface area and when the outside of the work surface area is approaching the vehicle body in different notification forms.
In addition to the above object, the transmitter of the work surface detection sensor radiates infrared rays so that approach outside the work surface area can be detected with a simple structure.

According to the first aspect of the present invention, when the vehicle body is rolling and running on the work surface area, even if the operator is not aware and approaches outside the work surface area, the notification is started by the vehicle-mounted notification means. The situation is communicated to the operator. Thus, the situation where the outside of the work surface area approaches can be reliably transmitted from the vehicle main body side to the boarding operator.
Therefore, when prompted by the notification, the operator only has to stop the vehicle body, stop the vehicle body, and enter the outside of the work surface area of the compaction machine without depending on other people. Can be prevented.

According to the invention of claim 2, it becomes possible to stop the vehicle main body without difficulty before entering the outside of the work surface area, and as long as the operator performs a stop operation of the vehicle main body as usual, without difficulty. This prevents entry outside the work area.
According to the invention of claim 3, the operator clearly recognizes when rolling on the work surface area and when the outside of the work surface area is approaching, based on notification by the notification device. be able to. In addition, the presence or absence of a failure can also be known from the notification indicating that the work surface area is under rolling.
According to the invention of claim 4, it is possible to detect an approach outside the work surface area with a simple structure.

The perspective view which shows the whole compaction machine which concerns on one Embodiment of this invention with the various apparatus which alert | reports the approach outside a work surface area. The flowchart which shows the alerting | reporting control at the time of reverse drive of the same compaction machine. Sectional drawing which shows the condition which is drive | working the to-be-worked area | region at the time of reverse drive of the rolling machine. Sectional drawing which shows the condition where the outside of a work surface area at the time of reverse drive of the rolling machine approaches.

Hereinafter, the present invention will be described based on an embodiment shown in FIGS.
FIG. 1 is a perspective view of a rolling machine, for example, a tire roller vehicle as viewed from the rear, and FIGS. 3 and 4 are views of the tire roller vehicle as viewed from the side.

  Referring to the tire roller vehicle, reference numeral 1 in FIGS. 1, 3 and 4 denotes a vehicle body (corresponding to the vehicle body of the present application) extending in the vehicle front-rear direction. The vehicle body 1 has a front side pressure roller 2 at a front portion, a rear side pressure roller 3 at a rear portion, and an operation deck 4 at an intermediate portion. Inside the vehicle body 1 is stored an engine (not shown) used for traveling and the like. Each rolling roller 2 and 3 also serves as a wheel of a tire roller vehicle.

  The driving deck 4 is provided with a driver seat 6 on which an operator S (only the head is shown in FIG. 3) is seated, and a canopy 7 that covers the seated operator S from above. An instrument panel 10 in which various meters are arranged is provided in front of the driver's seat 6. In front of the driver's seat 6, a steering wheel 11 for steering the front rolling roller 2, an accelerator pedal 12 (shown in FIG. 1) for adjusting the vehicle speed, and a brake pedal for applying a braking force to the rollers 2 and 3 are provided. 13 (illustrated in FIG. 1), a switching lever 14a (illustrated in FIG. 1) of a switching device 14 for switching between forward and reverse are provided. Reference numeral 18 denotes an ascending / descending step provided on the vehicle body 1 for getting on and off the driving deck 4. In FIG. 1, "F" indicates the front of the vehicle, and "R" indicates the rear of the vehicle.

  In other words, the tire roller vehicle 2 can perform the rolling operation by the forward / reverse switching operation, the steering operation, the accelerator operation, and the brake operation performed by the operator S who boarded the vehicle. Now, by making full use of the forward / reverse switching operation, the steering operation, the accelerator operation, and the brake operation, the rolling work can be performed in the work surface area as shown in FIG. 3, for example, the work surface area T1 of the embankment. .

In this tire roller vehicle, as shown in FIGS. 1, 3, and 4, the tire roller vehicle that reversely travels (rolls under pressure) enters the outside of the determined work surface area T 1, that is, the work surface area T 2. A safety device 20 is provided to prevent this.
The safety device 20 uses, for example, a detection medium radiated downward from the rear of the vehicle to determine a point that changes from the work surface area T1 to the outside work surface area T2 while the tire roller vehicle is moving backward. From this, the fact that the work area T2 has approached the tire roller vehicle is transmitted to the operator S who is on board, and the brake operation (stop) of the tire roller vehicle is urged.

  The safety device 20 operates when the tire roller vehicle 2 rolls (reverses) on the work surface area T1 to detect a work surface, for example, an infrared ray (detection medium). An infrared sensor 25 for detecting the work surface by radiating the work surface, and an out-of-area determination means for determining the outside T2 of the work surface according to a change in the detected amount of infrared light reflected from the work surface, for example, a control unit 30 and a notification means for notifying the operator S that the work area T2 is approaching the vehicle body 1 (vehicle body) upon receiving the same determination, for example, various notification devices 32 and 33.

  Specifically, the infrared sensor 25 is composed of a single unit component in which a transmitter that emits infrared rays, for example, an LED element 26, and a receiver that receives reflected infrared rays, for example, a light receiving element 27 are arranged (aggregated) adjacent to each other. Yes. The infrared sensor 25 is attached to a plurality of locations (two locations in the present embodiment) at the rear of the vehicle body 1 such that the LED element 26 and the light receiving element 27 are facing downward, and infrared rays are emitted from the LED element 26. A structure that radiates to a work surface (ground) behind the vehicle body close to the rear part of the vehicle body (corresponding to the rear part of the vehicle body), and detects the infrared rays emitted from the LEDF element 26 and reflected from the work surface (ground) by the light receiving element 27. is there.

  The control unit 30 is configured by combining, for example, a microcomputer and is stored in the vehicle body 1. The control unit 30 is connected to a switching device 14, an infrared sensor 25, various notification devices 32 and 33, a brake sensor 36 (shown in FIG. 1) for detecting a brake operation, and the like. The control unit 30 has a function of operating the infrared sensor 25 during reverse travel in accordance with, for example, a reverse gear signal input from the switching device 14. Further, the control unit 30 uses, for example, as a threshold value, a first reflected infrared ray amount from the work surface area T1 performed in the normal rolling operation and a second reflected infrared ray from the work surface outside T2 different from the first reflected infrared ray amount. The amount of change in the work surface that may lead to a dangerous situation, for example, the situation when the outside T2 outside the work surface area suddenly steps like a cliff from the work surface area T1 (FIGS. 3 and 4) A second reflected infrared ray amount based on the infrared ray is set so that the outside T2 of the work surface can be determined according to a change in the detected amount of the reflected infrared ray detected by the infrared sensor 25. That is, it has a function of determining the work area outside T2. In addition to these functions, the control unit 30 receives the same determination and activates the various notification devices 32 and 33. Furthermore, when the brake operation is performed after the notification devices 32 and 33 are activated, the various notification devices 32 and 33 are provided. Has the function of canceling the operation.

  Here, the various notification devices 32 and 33 emit light and sound that are easily noticed by the operator S on board, such as the red rotating lamps 32 provided on both sides of the rear part of the vehicle body 1 and the alarm device 33 provided on a part of the instrument panel 10. Consists of generating equipment. The red rotating lamp 32 and the alarm device 33 are activated in response to the determination of the out-of-work area T2 and the tire roller vehicle (vehicle main body) approaches the to-be-worked area T2. Light and a warning sound emitted from the alarm device 33 are used to notify the operator S and encourage the brake operation.

  In order to recognize the operation of the safety device 20, for example, as shown in FIG. 1, a tire roller vehicle (vehicle main body) is rolling on the work surface area T <b> 1 in a part of the instrument panel 10. A notification device, for example, an operation lamp 34, is provided for discriminating between the state and the state where the work area outside T2 is approaching the tire roller vehicle (vehicle main body). The operation lamp 34 is set so as to be lit until the work surface area T2 is determined, for example, from the time of reverse travel, and blinking when the work surface area T2 is determined, according to a command from the control unit 30. When the tire roller vehicle (vehicle main body) is running under pressure on the region T1, and when the outside of the work area T2 is approaching the tire roller vehicle (vehicle main body), different notification forms are notified. I am doing so.

  In particular, the radiation point of the infrared rays by the LED element 26 is shown in FIG. 3 so that the tire roller vehicle can be stopped before entering the outside T2 of the work surface without difficulty after receiving the notification from the notification devices 32 to 34. Thus, when the operator S who has boarded the tire roller vehicle is not blocked by the vehicle body 1 and is visible at the shortest distance from the rear of the vehicle, specifically, the operator S seated in the driver's seat 6 is facing backwards. From the point E, it is determined at a point along the line of sight J toward the ground in a straight line at the shortest distance without being blocked by the outer surface of the vehicle body 1. That is, the point of the line of sight J is a point used when determining the stop position of the tire roller vehicle (vehicle main body) in the rolling operation. Therefore, when T2 outside the work surface area is determined at the same point, the operator S just performs the normal brake operation just like the normal time, and does not force an unreasonable operation such as a sudden brake. Thus, the tire roller vehicle (vehicle main body) is stopped.

The tire roller vehicle configured in this manner ensures safety without depending on other persons in the rolling operation performed in reverse. FIG. 2 shows a control flowchart of the safety device 20 that ensures this safety.
The behavior of the tire roller vehicle will be described with reference to the flowchart of FIG. 2. The switching lever 14 a is now moved to the reverse stage by the operator S who has boarded, and the steering 11 is kept at a predetermined position while the accelerator pedal 12 is depressed at a predetermined position. It is assumed that the tire roller vehicle is moved backward to compact the work area T1 on the hill obtained by the embankment work.

The infrared sensor 25 starts operating from the time when it enters the reverse gear (steps S1 and S2). The operation lamp 34 is turned on (step S3), informing that the safety function for preventing the entry to the outside T2 outside the work area is working.
Then, infrared rays are radiated rearward and downward from the LED element 26 of the infrared sensor 25. 1, 3, and 4, α indicates a region where infrared rays are radiated to the work surface (ground) of the work surface region T <b> 1. The emitted infrared light is reflected from the work surface. The light receiving element 27 of the infrared sensor 25 detects the reflected infrared ray.

At this time, when the tire roller vehicle (vehicle main body) is rolling on the work surface area T1, the detected amount of the reflected infrared light detected by the light receiving element 27 is a preset outside work surface area T2. Therefore, the safety function does not operate.
It is assumed that the rolling operation of the tire roller vehicle proceeds and the operator S approaches the boundary portion T3 (including the wrinkles) of the work surface area T1 as indicated by a two-dot chain line in FIG. 4 without noticing.

  Here, the boundary portion T3 has a step. For this reason, when the same step reaches the infrared radiation point, the amount of infrared detection detected by the light receiving element 27 decreases rapidly. In the boundary portion T3, the detected amount of the same infrared ray indicates a value equal to or less than a threshold value for identifying the work surface outside T2. Therefore, the control unit 30 determines that the work surface outside T2 has approached the tire roller vehicle (vehicle main body) (step S4), turns on the rotating red light 32 (warning light), and turns on the alarm device 33 (warning device). On, the operation lamp 34 (warning lamp) is blinked (step S5), and the operator S who is on board is informed that the outside of the work surface area T2 approaches the tire roller vehicle.

  The operator S receives a warning light around the driver's seat 6 and a warning sound around the driver's seat 6 and is alerted, and immediately performs a brake operation to stop the rolling operation of the tire roller vehicle (vehicle body). By this brake operation, as shown in FIG. 4, the tire roller vehicle stops near the end of the work surface area T1. When the tire roller vehicle is stopped by the brake operation, the operation of the various notification devices 32 to 34 is released, and the initial state is restored (step S7).

  Accordingly, by notifying the operator S that the outside of the work surface area T2 is approaching from the vehicle body 1 side, a large number of personnel are arranged at the boundary, many poles are installed at the boundary, and a tape is stretched. The tire roller vehicle can be prevented from entering outside the work surface area T2 without depending on other people. Thereby, the rolling operation can be performed safely. In addition, when the infrared sensor 25 that emits infrared rays is used, it is possible to detect the approach outside the work surface area T2 with a simple structure.

In particular, the radiation point of the infrared rays (detection medium) by the LED element 26 is set to a point where the operator S can see the shortest distance from the rear of the tire roller vehicle without being obstructed by the vehicle body 1, and the normal rolling operation is performed. Therefore, if the operator S performs a stop operation as usual, the tire roller vehicle (vehicle main body) can be prevented from entering the outside T2 of the work surface.
In addition, since the notification by the operation lamp 34 is performed in different notification modes when the work surface area T1 is detected and when the work surface area outside T2 is approaching, the work surface area T1. It is possible to clearly recognize when traveling on the rolling side and when the outside of the work area T2 is approaching. Moreover, the presence or absence of failure can also be known from the notification indicating that the work area T1 is being detected.

  Note that the present invention is not limited to the above-described embodiment, and various modifications may be made without departing from the spirit of the present invention. For example, although an example using an infrared sensor has been described in one embodiment, the present invention is not limited to this, and other non-contact sensors may be used. In one embodiment, the present invention is applied to a tire roller vehicle. However, the present invention is not limited thereto, and the present invention may be applied to other rolling compaction machines. In one embodiment, an example in which a warning light, an alarm device, or an operation lamp is used as the notification unit has been described. However, the present invention is not limited thereto, and other devices may be used. For example, in a rolling machine equipped with an obstacle detection device that detects an obstacle, a warning light forming the device may be used, and the notification structure is not limited at all. Further, the work surface detection sensor may be provided not only backward and downward at the rear of the vehicle but also downward and forward at the front of the vehicle. Of course, the point where the notification means is provided may be a vehicle body, and the installation location is not limited.

1 Body (vehicle body)
25 Infrared sensor (work surface detection sensor)
26 LED element (transmitter)
27 Light receiving element (receiver)
30 Control unit (out-of-range determination means)
32-34 Rotating red light, alarm, operation lamp (notification means)
T1 Work area T2 Outside work area

Claims (4)

A vehicle main body on which an operator is boarded and rolls in a predetermined work surface area according to the operation of the operator, and applies a pressure to the work surface of the work surface area;
A transmitter that radiates a detection medium to a front or rear work surface near the front or rear of the vehicle body, which is provided at the front or rear of the vehicle body so as to face downward or backward at the front; A work surface detection sensor comprising a receiver for detecting a detection medium radiated from the transmitter and reflected from the work surface;
When the detection amount in the work surface detection sensor is a value equal to or less than a predetermined threshold value, out- of- area determination means for determining that the work surface area is outside;
A rolling compactor comprising: a notifying unit provided in the vehicle main body and notifying an operator that the outside of the work surface area is approaching the vehicle main body upon receiving the determination of the out-of-range determining unit.   The radiation point of the detection medium by the transmitter is a point where an operator who has boarded the vehicle body can visually check at the shortest distance from the front or rear of the vehicle body without being blocked by the vehicle body. The rolling machine according to claim 1.   The informing means includes an informing device, and the informing device performs a rolling operation on the work surface area and a time when the outside of the work surface area approaches the vehicle body, respectively. The rolling compaction machine according to claim 1 or 2, wherein the notification is made in a different notification form.   The compacting machine according to any one of claims 1 to 3, wherein the transmitter of the work surface detection sensor emits infrared rays.

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