JP5323635B2 - Boarding type rolling roller vehicle - Google Patents

Description

  The present invention relates to a boarding type rolling roller vehicle, and more particularly to a boarding type rolling roller in consideration of safety confirmation at the rear.

  This type of board-type rolling roller vehicle is used for pavement work in which a pavement material such as gravel or asphalt laid on a roadbed or roadbed is stepped on. This rolling roller vehicle has a rolling roller on the front and back of the vehicle body, and the driver's seat is provided at the upper part of the vehicle body between the front and rear rolling rollers.

  In such a rolling roller vehicle, the larger the rolling roller diameter, the higher the installation position of the driver's seat. Therefore, for the operator seated in the driver's seat, the blind angle in the longitudinal direction of the vehicle is wide. In particular, the operator needs to be very careful when moving backwards.

  Therefore, an optical sensor that detects an obstacle is attached to the rear end of the vehicle body, and when an obstacle is detected by this optical sensor, an alarm buzzer or alarm siren is activated to alert the operator. A rolling roller vehicle is known (Patent Document 1).

JP 2005-256478 A

  Since the boarding type rolling roller vehicle of Patent Document 1 is a so-called tire roller vehicle in which the rolling roller before and after the vehicle is covered with the vehicle body, the light to the rear end of the vehicle body regardless of the presence of the rolling roller on the rear side. Sensor can be attached.

  However, in a rolling roller vehicle in which front and rear rolling rollers are mounted at positions protruding from the vehicle body, so-called Macadam roller vehicles, even if an optical sensor is attached to the rear end of the vehicle body, the rear field of view is viewed from this optical sensor. The optical sensor cannot perform its original function because it is blocked by the rear rolling roller.

  On the other hand, the rolling roller on the rear side of the Macadam roller vehicle is provided with a scraper that removes deposits on the circumferential surface of the roller, and this scraper is supported by a scraper mounting rod that crosses the rolling roller in its width direction. Therefore, it is conceivable to attach an optical sensor to this rod. However, in this case, the optical sensor itself blocks the rear visual field for the operator from the driver's seat.

  Furthermore, to avoid scraper wear during the rolling of the rolling roller vehicle, the scraper is maintained in a resting state separated from the peripheral surface of the rolling roller, but this resting scraper blocks the detection range of the optical sensor. The optical sensor erroneously detects the scraper as an obstacle.

  The present invention has been made on the basis of the above-mentioned circumstances, and its object is to provide a detection device that reliably detects an obstacle behind the vehicle without erroneous detection, while regardless of the presence of this detection device. Another object of the present invention is to provide a boarding type rolling roller vehicle capable of sufficiently ensuring the rear visibility for a driver's seat operator.

  In order to achieve the above-described object, according to the riding type rolling roller vehicle according to claim 1, in the riding type rolling roller vehicle provided with front and rear rolling rollers that also serve as front and rear wheels, A vehicle body having a pressure roller, the rear roller roller defining the rear end of the vehicle on the rear peripheral surface facing the vehicle rear, and an operation provided on the vehicle body between the front and rear roller rollers A rear rolling roller mud scraping device for scraping off deposits attached to the seat and the rear circumferential surface of the rear rolling roller, A support device for supporting the pressure roller mud device, and a detection sensor for detecting an obstacle at the rear of the vehicle, which is mounted at a position higher than the rear rolling roller mud device in the support device. From behind the vehicle When checking, if the lower limit of the rear view is defined by the lower limit line that reaches the ground via one of the peripheral surface of the rear rolling roller and the rear scraping device, the detection sensor secures the rear view area above the lower limit line Arranged to do so.

  Since an interval is secured between the detection sensor and the lower limit line of the rear visual field, the operator at the driver's seat can check the rear of the vehicle through the interval regardless of the presence of the detection sensor. In addition, since the rear end of the vehicle is defined by the peripheral surface of the rear rolling roller, even if the peripheral surface of the rear rolling roller contacts something, it can prevent damage to the scraping device and the detection sensor. it can.

  According to the boarding type rolling roller vehicle according to claim 2, the detection sensor is an optical sensor that detects an obstacle by emitting light from the upper position of the rear rolling roller mud device toward the rear of the vehicle. Yes, the rear rolling roller mud is attached below the lower limit line, so that the mud is in the rest position, that is, even if the mud is separated from the peripheral surface of the rear rolling roller, The optical sensor can detect only the obstacle behind the vehicle without erroneously detecting the scraping device as an obstacle.

  According to the on-board type rolling roller vehicle according to claim 3, the support devices are provided on both sides of the rear rolling roller, and extend between the left and right brackets extending from the vehicle body along the side surface of the rear rolling roller. A mounting rod to which the brackets are connected to each other and the rear rolling roller scraping device is mounted, and is located above the mounting rod and extends between the brackets to connect the brackets to each other and to attach the optical sensor The bracket, the mounting rod, and the mounting member form a rectangular opening as a rear visual field region, so that the operator of the driver's seat does not have the optical sensor attached to the mounting member. Sufficient rear vision can be secured.

  According to the boarding type rolling roller vehicle of the fourth aspect, it is desirable that the optical sensor is mounted in the opening.

  The boarding type rolling roller vehicle according to any one of claims 1 to 4 includes a detection sensor that reliably detects an obstacle behind the vehicle without erroneous detection. On the other hand, regardless of the presence of the detection sensor, the driver of the driver's seat In addition, the rear visibility can be sufficiently secured.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a rear perspective view showing a Macadam roller vehicle which is an embodiment of a boarding type rolling roller vehicle according to the present invention. FIG. 2 is a rear perspective view showing the Macadam rolling-roller vehicle with the scraper of FIG. 1 raised. It is a side view showing a Macadam rolling roller vehicle.

Hereinafter, the Macadam roller vehicle will be described with reference to the drawings.
A Macadam roller vehicle 1 shown in FIG. 1 includes a front vehicle body 2 and a rear vehicle body 4, and the front vehicle body 2 has a front rolling roller 6 that also serves as a left and right integrated front wheel, while the rear vehicle body 4 is a rear wheel. One rear rolling roller 8 which also serves as the same. The front and rear vehicle bodies 2 and 4 are connected to each other by a joint system via a steering link (not shown).

  And the driver's seat 10 is provided in the upper part of the front vehicle body 2 at right and left, respectively. Therefore, a steering handle 14 is provided in front of the driver seat 10, but only the steering handle 14 on the driver seat side where the operator sits functions effectively by switching the hydraulic circuit. It has become a thing.

  A tank device (not shown) composed of a fuel tank and a hydraulic oil tank is arranged at the rear of the front vehicle body 2, while an engine (not shown) is arranged at the front of the front vehicle body 2. Yes. Further, a hydraulic pump (not shown) for supplying hydraulic oil to the traveling hydraulic motors of the front roller roller 6 and the rear roller roller 8 is disposed in the vicinity of the engine. The hydraulic pump is driven by the engine. The hydraulic oil sucked up from the hydraulic oil tank is supplied to the traveling hydraulic motor.

  A plurality of steps 12 are provided on the side surface of the front vehicle body 2, and using this step 12, the operator goes up the front vehicle body 2 and sits on the driver's seat 10, as necessary. While operating the steering handle 14, the Macadam roller vehicle 1 is driven to perform a rolling operation. At this time, the operator pays attention to the front and left and right sides of the front compaction roller 6 and pays attention to the rear side of the vehicle and the front just before the front compaction roller 6 with the side mirror 16 and the front mirror 18 of the front vehicle body 2. Rolling work while paying.

  The rear rolling roller 8 of the Macadam roller vehicle 1 is provided with a scraper device 21 as a mud scraper at its rear part. The scraper device 21 is used to scrape off dirt and other adhering matter adhering to the peripheral surface of the rear rolling roller 8 when the vehicle 1 travels forward during the rolling operation. Is arranged in front of the rear end of the Macadam roller vehicle 1 and at a position lower than the top of the rear rolling roller 8.

  Specifically, the scraper device 21 includes a scraper 22 that can be slidably contacted with the peripheral surface of the rear rolling roller 8, and the scraper 22 has a width substantially equal to that of the rear rolling roller 8, and is disposed via a scraper mounting frame 24. It is supported by the rear vehicle body 4. Specifically, the scraper mounting frame 24 is substantially U-shaped, and includes a pair of left and right brackets 24a extending diagonally rearward and upward from both sides of the rear end of the rear vehicle body 4 beyond the peripheral surface of the rear rolling roller 8, and the brackets 24a. And a horizontal rod 24b connecting the two.

  The scraper 22 is attached to the rod 24b via a pair of attachments 26. These fixtures 26 can be bent up and down at the center thereof, and the scraper 22 is movable so that it can be positioned at one of the operating position and the rest position by bending the fixtures 26. Specifically, at the operating position, the scraper 22 has its leading edge slidably contacted with the peripheral surface of the rear rolling roller 8 (see FIG. 1), and at the resting position, the scraper 22 has its leading edge at the rear rolling roller. It will be in the state which left | separated from the surrounding surface of 8 (refer FIG. 2).

  Although not shown, a scraper device is also arranged below the front side of the rear rolling roller 8, and this scraper device exhibits a scraping function when the vehicle travels backward during the rolling operation. This is different from the scraper device 21 described above. Furthermore, it goes without saying that the left and right front rolling rollers 6 are also provided with front and rear scraper devices.

  By the way, in this kind of Macadam roller vehicle 1, since the driver's seat 10 is at a high position, safety is not sufficiently ensured only by the operator's rear confirmation by the side mirror 16 or the like, and the vehicle when viewed from the driver's seat 10 It is inevitable that a blind spot will occur behind. For this reason, the Macadam roller vehicle 1 of one embodiment is provided with an optical sensor 32 that detects an obstacle in order to compensate for the inability to confirm due to the blind spot behind the vehicle.

  Here, when the operator seated in the driver's seat 10 confirms the rear, the lower limit of the rear visual field is the operator's eye position, that is, from the so-called eye point A to the peripheral surface of the rear rolling roller 8 or the scraper device 21 on the ground. If the detection sensor is arranged on the lower limit line L, the optical sensor 32 increases the rear dead angle, and the arrangement of the optical sensor 32 includes a rear dead angle. A device that does not cause an increase is required.

  Therefore, in the case of the present embodiment, the optical sensor 32 is a reflection type detection sensor that detects an obstacle behind the vehicle, and is attached to a sensor attachment plate 34b that is horizontally attached to the scraper attachment frame 24. . Specifically, the sensor mounting plate 34b connects the upper ends of the brackets 24a of the scraper mounting frame 24, and the optical sensor 32 is mounted on the lower surface of the sensor mounting plate 34b.

  The sensor mounting plate 34b cooperates with the rod 24b of the scraper mounting frame 24 to form a rectangular opening 36 above the rod 24b. The opening 36 is located between the optical sensor 32 and the lower limit line L described above. And have a size to ensure a predetermined interval. Specifically, the scraper mounting frame 24, that is, the left and right brackets 24a, the rod 24b, and the sensor mounting plate 34b form an opening 36 to secure a rear visual field region. The width is wider than the entire width, and the space between the lower limit line L and the optical sensor 32 is provided.

  The optical sensor 32 emits light rearward of the vehicle along a horizontal light emission axis positioned above the lower limit line L of the rear visual field, and when an obstacle exists in an area including the rear dead angle, By receiving the reflected light, the obstacle behind the vehicle is detected based on the reflected light. When the optical sensor 32 detects an obstacle, a warning siren lamp and a warning alarm (not shown) provided on the front vehicle body 2 are activated, and there is an obstacle around the operator of the driver's seat 10 and the vehicle. Be informed.

  As is clear from FIG. 3, since an interval is secured between the optical sensor 32 and the lower limit line L of the rear visual field, the operator of the driver's seat 10 passes the vehicle through the interval regardless of the presence of the optical sensor 32. Can be seen behind.

  Furthermore, since the scraper 22 and the optical sensor 32 are arranged in front of the rear end of the Macadam roller vehicle 1, the rear end of the vehicle 1, that is, the peripheral surface of the rear rolling roller 8 should be something. Even if it contacts, damage to the scraper 22 and the optical sensor 32 can be prevented.

  On the other hand, FIG. 2 shows the Macadam roller 1 with the scraper 22 held at the rest position. As described above, the scraper 22 in the rest position is separated from the peripheral surface of the rear rolling roller 8, but even if the scraper 22 is in the rest position, the optical sensor 32 may erroneously detect the scraper 22 as an obstacle. It is possible to detect only obstacles behind the vehicle.

  The description of one embodiment of the present invention is finished above, but the present invention is not limited to the above embodiment, and various modifications can be made without departing from the embodiment of the present invention.

For example, the optical sensor 32 is mounted on the lower surface of the center of the sensor mounting plate 34b, but can be mounted at any position in the opening 36 as long as it is above the lower limit line L of the rear visual field. It can also be attached to the outer surface of the sensor mounting plate 34b.
Further, the present invention can be applied to other types of boarding rolling roller vehicles other than the Macadam roller vehicle 1.

DESCRIPTION OF SYMBOLS 1 Macadam roller vehicle 2 Front vehicle body 4 Rear vehicle body 6 Front rolling roller (front wheel)
8 Rear rolling roller (rear wheel)
10 Driver's seat 12 Step 14 Steering handle 16 Side mirror 18 Front mirror 21 Scraper device (sludge device)
22 Scraper 24 Scraper mounting frame (support device)
24a Bracket 24b Rod 26 Mounting tool 32 Optical sensor 34b Sensor mounting plate (mounting member)
36 Aperture A Eye Point L Lower line of the rear vision

Claims (4)

In a boarding type rolling roller vehicle equipped with front and rear rolling rollers that also serve as front and rear wheels,
A vehicle body having the front and rear rolling rollers, the rear rolling roller defining a rear end of the vehicle on a rear peripheral surface facing the vehicle rear;
A driver's seat provided on the vehicle body between the front and rear rolling rollers;
A rear rolling roller mud scraper that is provided to be positioned in the vicinity of the rear circumferential surface of the rear rolling roller, and scrapes deposits adhered to the circumferential surface of the rear rolling roller.
A support device for supporting the rear rolling roller mud scraping device with respect to the vehicle body;
A detection sensor that is attached to an upper position than the rear rolling roller mud device in the support device and detects an obstacle behind the vehicle;
When the operator confirms the rear of the vehicle from the driver's seat, if the lower limit of the rear view is defined by the lower limit line that reaches the ground via one of the peripheral surface of the rear rolling roller and the rear scraping device, The boarding type rolling roller vehicle, wherein the detection sensor is arranged to ensure a rear visual field region above the lower limit line. The detection sensor is an optical sensor that detects an obstacle by emitting light from the upper position of the rear rolling roller mud device toward the rear of the vehicle,
The boarding type rolling roller vehicle according to claim 1, wherein the rear rolling roller mud scraper is attached below the lower limit line. The support device is
A left and right integrated bracket provided on both sides of the rear rolling roller and extending from the vehicle body along a side surface of the rear rolling roller;
An attachment rod extending between the brackets, connecting the brackets to each other and to which the rear rolling roller scraping device is attached;
A mounting member that is above the mounting rod, extends between the brackets, connects the brackets to each other, and is attached to the optical sensor;
The boarding type rolling roller vehicle according to claim 1 or 2, wherein the bracket, the mounting rod, and the mounting member form a rectangular opening as the rear visual field region.   The boarding type rolling roller vehicle according to claim 3, wherein the optical sensor is mounted in the opening.

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