JP2009299338A - Driver supporting system of road paving machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driver supporting system of a road paving machine, which can inexpensively realize the function of improving workability and safety by enabling the checking of an outside peripheral section of a hopper opened and closed to the inside of the hopper and right and left sides thereof as a driver's blind corner, when a driver seat is moved to the right or left side. <P>SOLUTION: An image made by a plied timber monitoring camera C<SB>3</SB>is ordinarily displayed on a monitor. The image displayed on the monitor is switched to an image made by a hopper right monitoring camera C<SB>2</SB>, when the hopper is operated for opening by means of hopper opening/closing operation switches 18a and 18b in the case where a left-side driver seat position switch S<SB>SL</SB>is turned on, so that the driver seat can be moved to a left-side position. The image displayed on the monitor is switched to an image made by a hopper left monitoring camera C<SB>1</SB>, when the hopper is operated for opening by means of the hopper opening/closing operation switches 18a and 18b in the case where a right-side driver seat position switch S<SB>SR</SB>is turned on, so that the driver seat can be moved to a right-side position. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a driver support system in a road paving machine, and in particular, installs a surveillance camera on the road paving machine to provide an inside periphery of the hopper that becomes a blind spot of the driver and an outer peripheral portion of the hopper that is opened and closed to the left and right. The present invention relates to a driver support system in a road paving machine that can be monitored at a driver's seat through a monitoring camera and a monitor.

  2. Description of the Related Art Conventionally, in construction machines such as a hydraulic excavator, a monitoring camera device that monitors a blind spot of a driver in a driver's seat by installing a monitoring camera at the rear of the machine body is known (for example, see Patent Documents 1 and 2). ). However, there is no known road paving machine provided with a monitoring camera device that monitors the inside of the hopper, which is a blind spot of the driver in the driver's seat, and the outer periphery of the hopper that is opened and closed to the left and right.

  FIG. 7 is a schematic side view of a general road paving machine. A road pavement machine 1 includes a machine body 3 supported by a crawler 2, and a self-propelled machine body 5 that runs by power of an engine (not shown) in a power unit 4 mounted on the machine body 3, and the machine body 5 A hopper 6 that is provided at the front portion of the machine body and accommodates asphalt mixture, a screw auger (not shown) that is supported on the rear portion of the machine body 5 in the width direction of the machine body 3 (direction perpendicular to the paper surface), and the hopper 6 To the front part of the screw auger, a conveyor (not shown) provided on the machine body 3 in the front-rear direction (the left-right direction in the figure), and the front end part are pivotable to both sides at approximately the center of the machine body 5 in the front-rear direction. A screed 9 that is connected and indexed to the machine body 5 by the supported leveling arm 8 and can be moved up and down by the cylinder 7, a control device 10 provided on the upper part of the machine body 5, and operation And a cockpit 12 with 11.

  The traveling direction of the road paving machine 1 is the direction of the arrow A in the figure. The hopper 6 is formed so as to be able to expand to the left and right with the conveyor interposed therebetween, and the left and right side surfaces of the hopper 6 are vertically moved by the hydraulic cylinders 13 and 13 disposed on both sides of the front portion of the body 3 ( It is structured to open and close by turning in and out of the body 3 in the width direction.

  Moreover, in the case of the large-sized road pavement machine 1, since the built-in components including the power unit 4 and the like increase in size, the machine body 5 becomes large and the visibility of the driver M is reduced. For this reason, conventionally, the driver's seat 11 is provided in the cockpit 12 side by side on the left and right (in the width direction of the fuselage 3), and the control device 10 is also moved to the left and right according to the driver's seat 11 where the driver M sits. A structure that can be switched is also known.

  Then, the asphalt mixture is supplied to the road pavement machine 1 when the dump truck loaded with the asphalt mixture approaches the hopper 6 that is open to the outside, and the asphalt mixture is put into the hopper 6 from the dump truck. Is done by. The asphalt mixture supplied into the hopper 6 is dropped onto a conveyor, sent to the rear part of the machine body 5 by the conveyor, and evenly distributed by a screw auger on the front side of the screed 9, and then spread by the screed 9. Are pressed and are smoothly laid on the pavement surface 14.

When there is no more asphalt mixture loaded on the dump truck, the dump truck is separated from the hopper 6, but since the asphalt mixture remains on the conveyor in the hopper 6, the road paving machine 1 continues to work. When there is no more asphalt mixture on the conveyor, the hydraulic cylinders 13 and 13 close the left and right side surfaces of the hopper 6 by turning them inward and upward, and leave the left and right inner side surfaces of the hopper 6. Drop the mixture onto the conveyor. Further, when the next dump truck carries the asphalt mixture, the left and right side surfaces of the hopper 6 are rotated outward to open to receive the new asphalt mixture.
Japanese Patent Application Laid-Open No. 2004-322979. Japanese Utility Model Laid-Open No. 7-20354.

  However, in this kind of road pavement machine 1, in order to confirm whether or not the inside of the hopper 6 becomes a blind spot from the driver's seat 11 where the driver M is sitting, and asphalt composite material remains in the hopper 6, As shown in FIG. 7, it is necessary for the driver M to stand up to the position of the symbol Ma and look into the hopper 6. Further, when the driver M is sitting in the left or right driver's seat 11 and maneuvering, the outer periphery of the hopper 6 on the side far from the driver's seat 11 where the driver M is sitting is the blind spot of the driver M. Become. Therefore, when the left and right side surfaces of the hopper 6 are opened, in order to confirm the safety of the blind spot part, the driver M works while standing up at the driver seat 11 or moving from the driver seat 11. For this reason, workability | operativity was bad and the driver | operator M was burdened.

  Therefore, when the driver's seat is moved to the left or right side in the road paving machine, the work load on the driver can be confirmed by checking the inside of the hopper and the outside periphery of the hopper that is opened and closed to the left and right. The technical problem to be solved in order to realize the driver support system with such excellent functions at low cost by using the electric control circuit arises. Therefore, an object of the present invention is to solve this problem.

  The present invention has been proposed to achieve the above object, and the invention according to claim 1 is a machine provided with a driver's seat which can be moved to the left or right position in the width direction of the fuselage according to the pavement condition. A road provided with a main body, a hopper provided at the front portion of the machine main body and opened and closed to the left and right outside in the width direction of the machine body, and a conveyor for conveying asphalt composite material put into the hopper to the rear portion of the machine main body A driver support system for a paving machine, a monitor provided at a position visible from the driver's seat, a composite monitoring camera for photographing the inside of the hopper, and a hopper for photographing a left outer peripheral portion of the hopper A left surveillance camera, a hopper right surveillance camera for photographing the right outer periphery of the hopper, a left driver seat position switch for detecting that the driver seat has been moved to the left position, and the driver seat on the right side A right-side driver's seat position switch for detecting that the vehicle has been moved to a position, and a hopper opening / closing operation switch for opening / closing the hopper. When the position switch is turned on and the driver's seat is moved to the left position, when the hopper is opened by the hopper opening / closing operation switch, an image displayed on the monitor is taken by the hopper right monitoring camera. When the right driver's seat position switch is turned on and the driver's seat is moved to the right position when the hopper is opened by the hopper opening / closing operation switch, the image displayed on the monitor is displayed. A road paving machine having an electric control circuit that controls to switch to an image taken by the left hopper monitoring camera. To provide a driver assistance system that.

  According to this configuration, during the operation of the road paving machine, basically, a video image taken by the composite monitoring camera is displayed on the monitor. This makes it possible for the driver to check whether asphalt composite material remains in the hopper through the image displayed on the monitor without having to stand up from the driver's seat in the cockpit and look into the hopper. Become.

  When the driver's seat is moved to the left position in the cockpit and the driver is sitting in the driver's seat on the left position and is operating, the right outer periphery of the hopper far from the driver's seat where the driver is sitting is driving. Become blind spots. At this time, the driver's seat is moved to the left position so that the left driver's seat position switch is turned on, and when the hopper opening / closing operation switch is opened in this circuit state, the image displayed on the monitor is displayed on the hopper right monitoring camera. Switch to the recorded image. For this reason, the driver does not have to stand up from the driver's seat in the cockpit or move from the driver's seat and look into the right outer periphery of the hopper, and through the image displayed on the monitor, the right outer periphery of the hopper It is possible to open the hopper while confirming safety.

  On the other hand, when the driver's seat is moved to the right position and the driver is sitting on the driver's seat in the right position and maneuvering, the left outer periphery of the hopper far from the driver's seat where the driver is sitting is the driver. It becomes a blind spot. At this time, the driver's seat is moved to the right position so that the right driver's seat position switch is turned on.When the hopper opening / closing operation switch is opened in this circuit state, the image displayed on the monitor is displayed on the hopper left monitoring camera. Switch to the recorded image. For this reason, the driver does not have to stand up from the driver's seat in the cockpit or move from the driver's seat and look into the left outer periphery of the hopper, and through the image displayed on the monitor, the left outer periphery of the hopper It is possible to open the hopper while confirming safety.

  When the hopper opening / closing operation switch is opened while the left or right driver's seat position switch is on, the image displayed on the monitor is switched to the image from the monitoring camera on the right or left of the hopper. The required control such as is performed by an electric control circuit.

  According to a second aspect of the present invention, in the first aspect of the present invention, there is provided a timer that starts in conjunction with the opening operation of the hopper by the hopper opening / closing operation switch, and is displayed on the monitor when the hopper is opened. Provides a driver support system in a road paving machine that continues to display the switched video for a preset time in the timer when the video is switched to the video taken by the surveillance camera on the right or left of the hopper. .

  According to this configuration, when the hopper opening / closing operation switch is opened, the image of the right outer peripheral portion or the left outer peripheral portion of the hopper that is a blind spot for the driver is continuously displayed on the monitor for a while. Makes it possible to open the hopper while confirming the safety of the blind spot easily and sufficiently.

  According to the first aspect of the present invention, while the road paving machine is in operation, the video in the hopper is basically displayed on the monitor. In addition, when the driver is sitting in the driver's seat on the left or right side and maneuvering, if the hopper open / close switch is opened, the image displayed on the monitor will be the blind spot of the driver. Or it switches to the image of the left outer periphery. Therefore, the driver passes through the monitor while sitting in the driver's seat at the left side position or the right side position, checks whether or not asphalt composite material remains in the hopper, and checks the right side of the hopper as a blind spot when the hopper is opened. The safety of the outer peripheral part or the left outer peripheral part can be confirmed, the work burden on the driver can be reduced, and workability and safety can be improved. Further, there is an advantage that required control can be performed at low cost by an electric control circuit without using a controller constituted by a microcomputer or the like.

  According to the second aspect of the present invention, an image of a right outer peripheral portion or a left outer peripheral portion of the hopper that becomes a blind spot of the driver when the hopper is opened is continuously displayed on the monitor for a while. Can be confirmed easily and sufficiently, and the safety can be further improved.

  When the driver's seat is moved to the left or right side on a road paving machine, the work load on the driver can be reduced by checking the inside of the hopper and the outside periphery of the hopper that opens and closes to the left and right. In addition to improving workability and safety, the purpose of realizing a driver support system with such excellent functions at low cost using an electric control circuit is to the left side in the width direction of the aircraft according to the pavement situation. A machine main body provided with a driver seat movable to a position or a right side position, a hopper provided at a front portion of the machine main body and opened and closed to the left and right outside in the width direction of the machine body, and an asphalt composite material put into the hopper A driver support system for a road pavement machine comprising a conveyor that conveys the rear of the machine body to the rear of the machine body, the monitor provided at a position visible from the driver's seat, and the hot A composite monitoring camera for photographing the inside of the hopper, a hopper left monitoring camera for photographing the left outer periphery of the hopper, a hopper right monitoring camera for photographing the right outer periphery of the hopper, and the driver's seat in the left position A left driver's seat position switch for detecting that the driver has moved, a right driver's seat position switch for detecting that the driver's seat has been moved to the right position, and a hopper opening / closing operation switch for opening and closing the hopper. When the left camera seat position switch is turned on and the driver seat is moved to the left position, the hopper is opened by the hopper opening / closing operation switch. When this happens, the image displayed on the monitor is switched to the image captured by the hopper right surveillance camera, and the right driver's seat position switch is turned on. When the driver's seat is moved to the right position, when the hopper is opened by the hopper opening / closing operation switch, the video displayed on the monitor is switched to the video captured by the hopper left monitoring camera. This is realized by having an electric control circuit.

  Hereinafter, the driver assistance system in the road paving machine which concerns on the Example of this invention is explained in full detail according to drawing. 1 is a side view of a road paving machine equipped with a driver assistance system, FIG. 2 is a plan view thereof, FIG. 3 is a rear view, and FIG. 4 is a diagram schematically showing a front structure of a cockpit in the machine body. . 1 to 4, the same or equivalent components as those in FIG. 7 are denoted by the same reference numerals as those described above, and redundant description is omitted.

  First, the configuration of a road paving machine equipped with a driver assistance system will be described. In FIG. 2, a conveyor 15 is provided in the front-rear direction of the machine body 3 (up and down direction in FIG. 2) between the hopper 6 and the front portion of a screw auger (not shown). The driver's seat 11 disposed in the cockpit 12 on the machine body 5 is provided so as to be movable in the width direction of the machine body 5 (left and right direction in FIG. 2), and the control device 10 is also a driver. The movement can be switched to the left and right positions according to the driver's seat 11 where the driver sits.

  As shown in FIG. 4, a pair of upper and lower rails 16, 16 extending in the left-right direction in the figure are fixed to the machine body 5 at the front of the cockpit 12, and between the pair of upper and lower rails 16, 16. Further, wheels 17 and 17 attached to the lower part of the control device 10 are arranged so as to freely roll. Therefore, the steering device 10 can move along the rails 16, 16 by rolling the wheels 17, 17 between the pair of upper and lower rails 16, 16. The steering device 10 is indicated by a solid line in FIG. It is possible to switch between a left side position and a right side position indicated by a two-dot chain line.

  When the control device 10 is moved to the left position, the driver's seat 11 is also moved to the left position so that the driver can sit on the left driver's seat 11 and operate the control device 10. When the control device 10 is moved to the right position, the driver's seat 11 is also moved to the right position, and a state suitable for the driver to sit on the right driver's seat 11 and operate the control device 10 is obtained.

Between the machine body 5 and driving device 10, the steering device 10 is disposed on the left side position, and left the driver's seat position switch S _SL to detect this, steering device 10 is disposed on the right position And a right driver's seat position switch _SSR for detecting this. These left and right driver's seat position switches S _SL and S _SR are of any structure such as a micro switch. Further, the control device 10 can be fixed at either the left or right position so that the control device 10 does not move unexpectedly by a stopper (not shown).

Further, as shown in FIGS. 1 and 2, on the machine main body 5 on the front side of the cockpit 12, a hopper left monitoring camera C ₁ capable of photographing the left outer periphery of the hopper 6, and a right outer periphery of the hopper 6. A hopper right monitoring camera C ₂ capable of photographing and a composite monitoring camera C ₃ capable of photographing the inside of the hopper 6 are provided. Further, the control device 10 is provided with hopper opening / closing operation switches 18a and 18b for opening and closing the hopper 6 to the left and right (see FIG. 4). The hopper opening / closing operation switch is shown as a single unit in FIG. 4, but with this one hopper opening / closing operation switch, a right hopper opening / closing operation switch 18a for opening / closing the hopper right 6a (see FIG. 2), and a hopper Both left and right hopper opening / closing operation switches 18b for opening / closing the left 6b are provided. Images taken by the monitoring cameras C _{1 to} C ₃ can be viewed in a posture in which the driver is sitting on the driver's seat 11 through the monitor 19 provided in the control device 10.

FIG. 5 shows an electric control circuit 20 for projecting each image taken by the hopper left monitoring camera C ₁ , the hopper right monitoring camera C ₂ , and the composite material monitoring camera C ₃ on the monitor 19. The electric control circuit 20 includes a right hopper opening / closing operation circuit 22, a left hopper opening / closing operation circuit 23, a hopper right monitoring camera circuit 24, a hopper left between two control buses 21a and 21b held at a required operating voltage value. A monitoring camera circuit 25 and a material monitoring camera circuit 26 are connected in parallel.

The right hopper opening and closing circuit 22 is open, closed, the open switching position of the right hopper opening and closing operation switch 18a with three switching positions of the neutral, first relay R ₁ and the first timer T ₁ is in series It is connected. The left hopper opening and closing circuit 23 is open, closed, the open switching position of the left hopper-off operation switch 18b with 3 switching positions of the neutral, the second relay R ₂ and the second timer T ₂ is in series It is connected. The hopper right monitoring camera circuit 24 includes a parallel connection portion of a left driver's seat position switch S _SL , a contact (make contact) R _{1a of} the first relay R ₁ and a contact T _1a of the first timer T1. , the third relay R ₃ and hopper right surveillance camera C ₂ are connected in series. The hopper on the left monitor camera circuit 25, the right driver's seat position switch _{S SR,} the parallel connection of the second relay _{R 2} for a contact _{R 2a} and the second timer _{T 2} of the a-contact _{T 2a,} 4 Relay R ₄ and hopper left monitoring camera C ₁ are connected in series. In addition, a b-contact (break contact) R _{3b of} the third relay R ₃ , a b-contact R _{4b of} the fourth relay R ₄ and a mixture monitoring camera C ₃ are connected in series to the compound monitoring camera circuit 26. It is connected to the.

  Next, the operation of the driver support system in the road paving machine configured as described above will be described. First, the basic operation of the road paving machine 1 will be described. When the road paving machine 1 is operated and the driver operates the left hopper opening / closing operation switch 18b to the open switching position and the right hopper opening / closing operation switch 18a to the open switching position, the hopper left 6b and the hopper right 6a are moved to the left and right. The hopper 6 is opened by the opening operation, the dump truck loaded with the asphalt mixture approaches the opened hopper 6, and the asphalt mixture is put into the hopper 6 from the dump truck. The asphalt mixture supplied into the hopper 6 falls onto the conveyor 15, is sent to the rear part of the machine body 5 by the conveyor 15, is uniformly distributed by the screw auger on the front side of the screed 9, and then laid on the screed 9. Leveling and compaction are performed, and the sheet is smoothly laid on the pavement surface 14.

  When there is no more asphalt mixture loaded on the dump truck, the dump truck moves away from the hopper 6, but since the asphalt mixture remains on the conveyor 15 in the hopper 6, the road paving machine 1 continues to work. When the asphalt mixture on the conveyor 15 runs out, the hydraulic cylinders 13 and 13 close the hopper right 6a and the left hopper 6b by turning the hopper right 6a and the left hopper 6b inward and close. The asphalt mixture remaining in the container is dropped onto the conveyor 15. Further, when the next dump truck carries the asphalt mixture, the hopper 6 is opened by opening the hopper left 6b and the hopper right 6a to the left and right in the same manner as described above in order to receive the new asphalt mixture.

Next, a driver assistance operation by video display using each of the monitoring cameras C _{1 to} C ₃ and the monitor 19 will be described with reference to a time chart of FIG. 6 showing an operation procedure of the electric control circuit 20. 6 is a time chart when the right hopper opening / closing operation switch 18a is switched. Of the circuits 22 to 26 in the electric control circuit 20, only the composite monitoring camera circuit 26 is always set to the on state by the two b contacts R _3b and R _4b . Therefore, the road paver 1 is running, the two control bus 21a in the electric control circuit 20, the desired operating voltage between 21b occurs, first case the mixture member monitoring camera C ₃ operates the monitor 19 video taken by a timber monitoring camera C ₃ is displayed. Thus, the driver can confirm the accommodation status of the asphalt mixture in the hopper 6 without having to stand up from the driver's seat 11 in the cockpit 12 and look into the hopper 6.

Now, when the driver's seat 11 is moved to the left side position in the cockpit 12 and the driver is sitting on the driver's seat 11 at the left side and is operating, the hopper on the side far from the driver's seat 11 where the driver is sitting. 6 is the driver's blind spot. At this time, since the driver's seat 11 is moved to the left position, the left driver's seat position switch _SSL is turned on. Operating the right hopper opening and closing switch 18a in this state to an open switching position, the first timer T ₁ is started with the first relay R ₁ is energized, the first relay in the hopper right surveillance camera circuit 24 a contact _{R 1a} and the first contact a _{T 1a} of the timer _{T 1} of the R ₁ are turned oN together, hopper right surveillance camera circuit 24 is set to the oN state. At this time, even if the driver releases his / her right hopper opening / closing operation switch 18a and the right hopper opening / closing operation switch 18a returns to the neutral position, the a contact T _1a of the first timer T ₁ is The ON state is maintained for a time set in advance in the _first timer T1.

Therefore, when the hopper right monitoring camera circuit 24 is set to the on state and the third relay R ₃ is energized, the b contact R _{3b of the third} relay R ₃ turns off and is set to the on state. The composite monitoring camera circuit 26 that has been turned off is turned off. As a result, the hopper right surveillance camera C ₂ with the mixture material surveillance camera C ₃ turns off is turned on, the image displayed on the monitor 19, the right outer periphery of the hopper 6 taken in hopper right surveillance camera C ₂ The image switches to. Then, the monitor 19 is only right outer periphery preset time t an image on the first timer T ₁ of the hopper 6 is switched said continues reflects further.

  For this reason, the driver does not need to stand up from the driver's seat 11 in the cockpit 12 or move from the driver's seat 11 and look into the right outer periphery of the hopper 6, and through the image displayed on the monitor 19, The hopper right 6a can be opened while sufficiently confirming the safety of the right outer periphery of the hopper 6.

As for the left outer periphery of the hopper 6, visibility that can be directly seen from the driver's seat 11 is secured by a driver who is sitting in the driver's seat 11 on the left side and is operating, so the left hopper can be opened and closed. an operation switch 18b "open", be manipulated in any switching position of the "closed", mixture material surveillance camera circuit 26 remains in an on state, the monitor 19 images are projected from the cause material monitoring camera C ₃ to continue.

On the other hand, when the driver's seat 11 is moved to the right position in the cockpit 12 and the driver is sitting on the driver's seat 11 in the right position and is operating, the hopper on the side far from the driver's seat 11 where the driver is sitting. The left outer periphery of 6 is the driver's blind spot. At this time, the right driver's seat position switch _SSR is turned on because the driver's seat 11 is moved to the right position. Operating the left hopper opening and closing operation switch 18b to the open switching position in this state, the second relay R ₂ is a second timer T ₂ is started with is energized, a second relay in the hopper left surveillance camera circuit 25 _Both the a contact R _2a of R ₂ and the a contact T _{2a of} the second timer T ₂ are turned on, and the hopper left monitoring camera circuit 25 is set to the on state. At this time, even release the left hopper opening and closing switch 18b in the driver's opening operation, the second contact a T _2a of the timer T ₂ are, for a preset time in the timer T ₂ of the second The on state is maintained.

Accordingly, when the hopper left monitoring camera circuit 25 is set to the on state and the fourth relay R ₄ is energized, the b contact R _{4b of the fourth} relay R ₄ is turned off and set to the on state. The composite monitoring camera circuit 26 that has been turned off is turned off. As a result, the hopper left surveillance cameras C ₁ together with the mixture material surveillance camera C ₃ turns off is turned on, the image displayed on the monitor 19, the left outer periphery of the hopper 6 taken in hopper left surveillance cameras C ₁ The image switches to. Then, the monitor 19 for a preset time the image of the left outer peripheral portion to the second timer T ₂ of the hopper 6 is switched said continues reflects further.

  For this reason, the driver does not have to stand up from the driver's seat 11 in the cockpit 12 or move from the driver's seat 11 and look into the left outer periphery of the hopper 6, and through the image displayed on the monitor 19, The hopper left 6b can be opened while sufficiently checking the safety of the left outer periphery of the hopper 6.

When the driver's seat 11 is in the right position, the right outer periphery of the hopper 6 can be viewed directly from the driver's seat 11 by the driver who is sitting on the driver's seat 11 in the right position and is operating. Therefore, even if the right hopper opening / closing operation switch 18a is operated to either the “open” or “closed” switching position, the mixture monitoring camera circuit 26 remains on, and the monitor 19 continue images are projected from the mixture material surveillance camera C _3.

Thus, when the driver is sitting on the driver's seat 11 at the left side position or the right side position and maneuvering, if the right hopper opening / closing operation switch 18a or the left hopper opening / closing operation switch 18b is operated to the open switching position, the hopper right monitoring is performed. image photographed by the camera C ₂ or hopper left surveillance camera C ₁ is displayed on only the monitor 19 a preset time. Accordingly, the driver can sufficiently check whether the situation of the right outer peripheral portion or the left outer peripheral portion of the hopper 6 that is the blind spot of the driver is safe while sitting in the driver's seat 11 through the monitor. It becomes possible to judge. Then, while fully confirming the safety of the right outer periphery and the left outer periphery of the hopper 6, the hopper left 6b and the hopper right 6a are opened left and right to open the hopper 6, and after the hopper 6 is opened it is that the video from the cause material surveillance camera C ₃ to the monitor 19 are displayed, while checking the feed conditions of the asphalt mixture to the hopper 6, can be supplied with new asphalt mixture from a dump truck. As a result, the work load on the driver is reduced, and workability and safety are improved.

Note that by turning on the split switch (not shown) provided in a handling device 10 divides the image displayed on the monitor 19, a monitor of a plurality of said one group video surveillance cameras C ₁ or C ₂ and C ₃ 19 can be shown simultaneously. In this case, since the video shot by the left and right monitoring cameras C ₁ and C ₂ and the video shot by the composite monitoring camera C ₃ are simultaneously displayed on the monitor 19, the operability and safety are further improved. improves. In addition to displaying the images of a plurality of monitoring cameras side by side on the monitor 19 at the same time, for example, the configuration may be such that the images of different monitoring cameras are automatically switched at regular intervals.

  In the present embodiment, the configuration in which the driver's seat 11 disposed in the cockpit 12 is provided so as to be movable in the width direction of the fuselage 3 has been described. It is good also as a structure which provided the seats 11 and 11. In such a configuration, a driver sitting position detecting means such as a pressure switch is installed at the lower part of the driver's seat 11, and when the driver sits, the pressure switch is turned on to determine which driver's seat left or right the driver is sitting on. If the detection is enabled, the driver position can be specified.

  The present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

The side view of the road paving machine carrying the driver assistance system in the road paving machine which concerns on the Example of this invention. The top view of a road pavement machine same as the above. The rear view of the same road paving machine. The enlarged front view which shows the front part structure of the cockpit in a road pavement machine same as the above. The circuit diagram which shows the electric control circuit of the driver | operator assistance system in a road pavement machine same as the above. The time chart which shows the operation procedure of an electric control circuit same as the above. The side view of the conventional road paving machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Road pavement machine 2 Crawler 3 Machine body 4 Power unit 5 Machine main body 6 Hopper 7 Cylinder 8 Leveling arm 9 Screed 10 Control device 11 Driver's seat 12 Cockpit 13 Hydraulic cylinder 14 Pavement surface 15 Conveyor 16 Rail 17 Wheel 18a Right hopper opening / closing operation switch 18b Left hopper opening / closing operation switch 19 Monitor 20 Electric control circuit 21a Control bus 21b Control bus 22 Right hopper opening / closing operation circuit 23 Left hopper opening / closing operation circuit 24 Hopper right monitoring camera circuit 25 Hopper left monitoring camera circuit 26 Compound monitoring camera circuit C ₁ Hopper Left monitoring camera C ₂ Hopper right monitoring camera C ₃ Composite monitoring camera S _SL Left driver seat position switch S _SR Right driver seat position switch T ₁ First timer T ₂ Second timer

Claims (2)

A machine body provided with a driver's seat that can be moved to the left or right position in the width direction of the aircraft in accordance with the pavement situation; A driver support system in a road paving machine comprising a conveyor that conveys the asphalt mixture put into the hopper to the rear of the machine body,
A monitor provided at a position visible from the driver's seat, a composite monitoring camera for photographing the inside of the hopper, a hopper left monitoring camera for photographing a left outer periphery of the hopper, and a right outer periphery of the hopper Hopper right monitoring camera for photographing a part, left driver seat position switch for detecting that the driver seat has been moved to the left position, and right driver seat position switch for detecting that the driver seat has been moved to the right position And a hopper opening / closing operation switch for opening and closing the hopper, the image taken by the material monitoring camera is always displayed on the monitor, the left driver seat position switch is turned on, and the driver seat is in the left position. When the hopper is opened by the hopper opening / closing operation switch while being moved, an image displayed on the monitor is taken by the hopper right monitoring camera. When the right driver's seat position switch is turned on and the driver's seat is moved to the right position, and when the hopper is opened by the hopper opening / closing operation switch, the image displayed on the monitor A driver support system in a road pavement machine, comprising an electric control circuit that controls to switch to an image captured by the left hopper monitoring camera. A timer that starts in conjunction with the opening operation of the hopper by the hopper opening / closing operation switch is provided, and the image displayed on the monitor when the hopper is opened is switched to the image taken by the monitoring camera on the right or left of the hopper. The driver support system for a road pavement machine according to claim 1, wherein the monitor continues to display the switched video for a preset time in the timer.

Images