JP2011099203A - Paving machine having hopper cleaning function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of a conventional paving machine, in which cleaning of a hopper for storing a paving material is troublesome since it is manually performed by an operator on a case-by-case basis. <P>SOLUTION: An asphalt finisher 1 includes a spraying mechanism for spraying cleaning liquid to each inner surface of side walls 2aL, 2aR of the hopper 2 for storing the paving material and a partition plate 10. The cleaning liquid is sprayed to each inner surface of the side walls 2aL, 2aR of the hopper 2 and the partition plate 10 storing and surrounding the paving material, whereby each inner surface of the side walls 2aL, 2aR of the hopper 2 and the partition plate 10 are cleaned, and the paving material is also prevented from adhering thereto. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a paving machine including a hopper that accommodates a paving material.

  Conventionally, as a paving machine provided with this kind of hopper, there is an asphalt finisher, for example. The asphalt finisher transports asphalt mixture (hereinafter referred to as pavement material) thrown into the hopper backward by a conveyor, drops it onto the road surface, and spreads it on the road surface with a screw spreader. The supply amount of the pavement material sown on the road surface is adjusted by strike-off and supplied to the tamper device. The tamper device drives the tamper motor to move the tamper edge up and down to solidify the pavement material sown on the road surface. The pavement that has been solidified is spread with a screed plate.

  Since the strike-off and screed plate is heated by a heating device as disclosed in, for example, Patent Document 1, the pavement surface is smoothly ironed and the pavement material or the like adheres to the strike-off or screed plate. Is prevented. Further, the tamper edge is also heated by the remaining heat at the time of strike-off and heating of the screed plate, and it is possible to prevent the paving material and the like from adhering to the tamper edge.

JP-A-10-252012

  However, the conventional asphalt finisher prevents the pavement material from adhering to the strike-off or tamper edge, but adheres to the inner surface of the side wall of the hopper surrounding the accommodated pavement material. For this reason, conventionally, the adhering pavement material has been removed by a worker entering the hopper and spraying the cleaning liquid onto the inner surface of the side wall of the hopper with a sprayer. Therefore, the conventional asphalt finisher takes time and effort because the inside of the side wall of the hopper is cleaned by the hand of the worker each time.

The present invention has been made to solve such problems,
A hopper for accommodating the supplied pavement material by surrounding the periphery with side walls;
A pavement machine having a hopper cleaning function was provided by providing a spraying mechanism for spraying a cleaning agent on the inner surface of the side wall of the hopper.

  According to this configuration, the spraying mechanism sprays the cleaning agent on the inner surface of the hopper side wall, thereby cleaning the inner surface of the hopper side wall and preventing the pavement material from adhering to the inner surface of the hopper side wall. Is done. For this reason, an operator enters the hopper and sprays the cleaning liquid on the inner surface of the hopper side wall so that the inner surface of the hopper side wall does not have to be cleaned each time as in the prior art. Therefore, after pavement work, it is not necessary to clean the inner surface of the side wall of the hopper by the operator's hand, and it is difficult for the pavement material to adhere to the inner surface of the side wall of the hopper before the pavement work. Become.

  As a result, according to the pavement machine having the hopper cleaning function according to the present invention, labor for cleaning the inner surface of the side wall of the hopper and preventing adhesion of the pavement material is reduced.

It is a side view which shows the structure of the asphalt finisher by one Embodiment of this invention. (A) is a top view which shows the chassis of the hopper part of the asphalt finisher shown in FIG. 1, (b) is a side view of the chassis shown in (a). It is a front view of the hopper part of the asphalt finisher shown in FIG. It is the block diagram which showed the structure of the distribution mechanism with which the asphalt finisher shown in FIG. 1 is provided.

  Next, an embodiment for carrying out the present invention when a paving machine having a hopper cleaning function according to the present invention is applied to an asphalt finisher will be described.

  The asphalt finisher 1 is provided with a hopper 2 that accommodates an asphalt heating mixture supplied from a dump truck as a paving material at the front of the vehicle body. At the bottom of the hopper 2, a conveyor for conveying the paving material supplied to the hopper 2 is provided, and a screw spreader is provided at the lower part of the vehicle body behind the conveyor. The screw spreader has screw blades formed on the outer periphery of the screw shaft. As the screw shaft rotates at a constant speed, the screw blades turn, and the pavement material supplied from the conveyor and dropped onto the road surface R is removed from the road surface R. Spread in the width direction. A screed device 5 is provided on the rear side of the vehicle body for smoothing the paved surface by spreading and leveling the paved material. The asphalt finisher 1 travels to the left in the figure, which is a traveling direction, by a pair of front wheels 6L and 6R and a pair of rear wheels 7L and 7R provided at the front and rear of the vehicle body, and pulls the screed device 5. The driver's seat 8 at the upper part of the vehicle body is provided with an operation unit 9. The operation unit 9 includes a travel switch for operating the asphalt finisher 1, an operation lever for operating the screed device 5, an operation switch, and the like. Is provided.

  FIG. 2A is a plan view showing a chassis of the hopper 2 portion of the asphalt finisher 1 shown in FIG. 1, and FIG. 2B is a side view of the chassis shown in FIG. FIG. 3 is a front view of the hopper 2 portion of the asphalt finisher 1 shown in FIG.

  The hopper 2 provided in the chassis of the asphalt finisher 1 has wings having a substantially L-shaped cross section as side walls 2aL and 2aR, and has left and right objects around the machine center line C of the asphalt finisher 1. These side walls 2aL and 2aR are attached to the chassis of the asphalt finisher 1 so as to be rotatable toward the machine center line C. FIG. 3 shows a state in which the side wall 2aR is rotated from the machine center line C to the right half of the machine traveling direction, and the side wall 2aL is not rotated from the machine center line C to the left half of the machine moving direction. A cross section is shown. Further, the conveyors 11L and 11R described above are provided on the bottom between the side walls 2aL and 2aR of the hopper 2 so as to be left and right around the machine center line C, and the hopper apron is provided at the bottom of the front hopper 2 in the machine traveling direction. 2b is provided. In addition, a partition plate 10 that divides the hopper 2 and a load such as an engine is erected on the rear portion of the hopper 2 as a rear side wall. The pavement material accommodated in the hopper 2 is surrounded by the inner surfaces of the side walls 2aL and 2aR and the partition plate 10 at the periphery thereof.

  A cleaning liquid tank 21 is mounted on the rear part of the chassis partitioned by the partition plate 10. The cleaning liquid tank 21 is cleaned by removing the pavement material adhering to the inner surfaces surrounding the side walls 2aL and 2aR of the hopper 2 and the pavement material of the partition plate 10, and the side walls 2aL and 2aR of the hopper 2 and the partition plate 10 are cleaned. A cleaning liquid for preventing the pavement material from adhering to each inner surface surrounding the pavement material is stored as a cleaning agent. The cleaning liquid tank 21 is provided with a pump 22, and a valve 24 is connected to the pump 22 via a hose 23. The valve 24 is connected to a pipe 26L via a hose 25L and a pipe 26R via a hose 25R. The pipes 26L, 26R have portions connected to the hoses 25L, 25R extending perpendicularly from the lower end of the outer surface of the side walls 2aL, 2aR of the hopper 2 to the upper end, through the side walls 2aL, 2aR from the upper end and passing through the side walls 2aL, 2aR. It is led to the inner surface of 2aR and is disposed along the upper edge of the inner surface of the side walls 2aL, 2aR of the hopper 2. In these pipes 26L and 26R, nozzles 30 are provided at predetermined intervals with the outlets directed to the inner surfaces of the hopper 2 that are perpendicular to the side walls 2aL and 2aR. A pipe 29 is connected to the valve 24 via a hose 27. The piping 29 is arranged in the width direction of the chassis along the upper edge portion of the partition plate 10, and nozzles 31 having jet nozzles directed to the inner surface standing vertically of the partition plate 10 are provided at predetermined intervals. The cleaning liquid tank 21, the pump 22, the hose 23, the valve 24, the hoses 25L, 25R, 27, the pipes 26L, 26R, 29 and the nozzles 30, 31 are the side walls 2aL, 2aR of the hopper 2 provided in the asphalt finisher 1 and the partition plate. A distribution mechanism that distributes the cleaning agent to each inner surface of 10 is configured. The asphalt finisher 1 has a hopper cleaning function by this distribution mechanism.

  FIG. 4A is a block diagram illustrating a configuration of the above-described distribution mechanism included in the asphalt finisher 1. 4 that are the same as those in FIGS. 2 and 3 are given the same reference numerals, and descriptions thereof are omitted.

  The cleaning liquid stored in the cleaning liquid tank 21 is sent to the valve 24 via the hose 23 by the feed pressure generated by the pump 22. The valve 24 is normally closed to prevent the flow of cleaning liquid from the hose 23. A relief path 33 is provided between the pump 22 and the cleaning liquid tank 21 to return the cleaning liquid from the pump 22 to the cleaning liquid tank 21 and circulate between the cleaning liquid tank 21 and the pump 22 when the valve 24 is not open. ing. The valve 24 flows the cleaning liquid from the hose 23 by switching the flow path according to the operation of the switch 32 provided in the operation unit 9 or the like. That is, when a signal for distributing the cleaning liquid to the inner surfaces of the side walls 2aL and 2aR of the hopper 2 is received by the operation of the switch 32, the valve 24 switches the cleaning liquid from the hose 23 to the hose 25L and 25R side and flows the pipe 26L, The cleaning liquid is sprayed and distributed on the inner surfaces of the side walls 2aL and 2aR of the hopper 2 from the nozzles 30 provided on 26R. When the switch 32 is operated to receive a signal for distributing the cleaning liquid to the inner surface of the partition plate 10, the valve 24 switches the cleaning liquid from the hose 23 to the hose 27 side to flow, and each nozzle 31 provided in the pipe 29. Then, the cleaning liquid is sprayed on the inner surface of the partition plate 10 and distributed. When the switch 32 is operated to receive a signal for distributing the cleaning liquid to the side walls 2aL and 2aR of the hopper 2 and the inner surfaces of the partition plate 10, the valve 24 supplies the cleaning liquid from the hose 23 to the hoses 25L and 25R and the hose 27. The cleaning liquid is sprayed on the inner surfaces of the side walls 2aL and 2aR of the hopper 2 from the nozzles 30 provided on the pipes 26L and 26R and sprayed, and the cleaning liquid is applied to the inner surface of the partition plate 10 from the nozzles 31 provided on the pipe 29. Spray and distribute.

  According to the asphalt finisher 1 according to the present embodiment, the cleaning liquid sent from the pump 22 by operating the switch 32 as described above flows from the valve 24 to the hoses 25L, 25R, and 27 by the above-described distribution mechanism. The cleaning liquid is applied from the nozzles 30 and 31 to the side walls 2aL and 2aR of the hopper 2 and the inner surfaces of the partition plate 10, whereby the side surfaces 2aL and 2aR of the hopper 2 and the inner surfaces of the partition plate 10 are cleaned. The pavement material is prevented from adhering to the side walls 2aL, 2aR of the hopper 2 and the inner surfaces of the partition plate 10. For this reason, the worker enters the hopper and does not have to clean the hopper 2 on the side walls 2aL and 2aR of the hopper 2 and the inner surfaces of the partition plate 10 each time. Therefore, after the pavement work, the side walls 2aL and 2aR of the hopper 2 and the inner surfaces of the partition plate 10 can be cleaned by the operator's hand, and the side walls 2aL and 2aR of the hopper 2 and the partition plate can be removed before the pavement work. By spreading a cleaning agent on each inner surface of the pavement 10, it becomes difficult for the pavement material to adhere. As a result, according to the asphalt finisher 1 having a hopper cleaning function according to the present invention, it takes time and effort to clean the side walls 2aL and 2aR of the hopper 2 and the inner surfaces of the partition plate 10 and to prevent adhesion of pavement material. Disappear.

  In the above-described embodiment, the pump 22 is in a driving state, the valve 24 is opened according to the operation of the switch 32, and the cleaning liquid is distributed from the nozzles 30 and 31 by switching the flow path of the cleaning liquid. The present invention is not limited to this. For example, as shown in FIG. 4B, the switch 32 may be connected to the pump 22, the valve 24 may be left open, and the pump 22 may be driven and controlled according to the operation of the switch 32. Good. In this configuration, when the switch 32 is turned on, the cleaning liquid is sent from the pump 22 and sent to the valve 24 via the hose 23, and the cleaning liquid is distributed from the nozzles 30 and 31. Even with this configuration, the same operations and effects as those of the above-described embodiment can be achieved.

  Moreover, although the said embodiment demonstrated the structure which has arrange | positioned piping 26L, 26R and piping 29 along the inner surface upper edge part of side wall 2aL, 2aR of the hopper 2, and the upper edge part of the partition plate 10, this invention Is not limited to this. For example, brackets are provided on the side walls 2aL and 2aR of the hopper 2 and the upper edge of the partition plate 10, and the pipes 26L and 26R and the pipe 29 are supported by the brackets, and the pipes 26L and 26R and the pipe 29 and the nozzles 30 and 31 are supported. May be arranged in the air above the side walls 2aL and 2aR and the partition plate 10. Even with this configuration, the same operations and effects as those of the above-described embodiment can be achieved.

  In the above embodiment, the case where the paving machine having a hopper cleaning function according to the present invention is applied to an asphalt finisher has been described, but the present invention is not limited to this. For example, the present invention can be applied to a hopper such as a road surface layer regenerator such as a remixer or a re-paver.

DESCRIPTION OF SYMBOLS 1 ... Asphalt finisher 2 ... Hopper 2aL, 2aR ... Side wall 10 ... Partition plate 21 ... Cleaning agent tank 22 ... Pump 23, 25L, 25R, 27 ... Hose 24 ... Valve 26L, 26R, 29 ... Piping 30, 31 ... Nozzle 32 ... Switch 33 ... relief path

Claims (1)

A hopper for accommodating the supplied pavement material by surrounding the periphery with side walls;
A pavement machine having a hopper cleaning function, comprising: a distribution mechanism that distributes a cleaning agent to the inner surface of the side wall of the hopper.

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