JPH0726402Y2 - Paving machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a paving machine such as an asphalt finisher or a base paver, and more particularly to a paving machine having a cleaning mechanism.

[Prior Art] A conventional paving machine is provided with a traveling vehicle body, a hopper, an endless bar feeder, a leveling device, and a tunnel-shaped asphalt mixture conveying path through which the bar feeder is inserted. The asphalt mixture in the hopper can be conveyed by the bar feeder to the leveling device through the asphalt mixture conveying path.

By the way, since the asphalt mixture is composed of asphalt mixed with aggregate and the like, it has the property of being strongly adhered to the metal surface. For this reason, as the paving machine is used, residues of asphalt mixture adhere to the inner surface of the hopper and the top surface of the bar feeder and are gradually laminated unless washed with light oil, etc., and the amount of asphalt mixture stored in the hopper is reduced. There is a disadvantage that the asphalt mixture carrying capacity of the bar feeder decreases.

Therefore, conventionally, after the paving machine has been used, a cleaning agent such as light oil is sprayed onto the inner surface of the hopper with a hose or the like to wash off the residue of the asphalt mixture.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional cleaning method, it was not possible to insert the hose into the tunnel-shaped asphalt mixture conveying path through which the bar feeder is inserted and spray the cleaning agent. . Therefore, unless the paving machine is disassembled and repaired, the upper surface of the bar feeder and the inner surface of the asphalt mixture transportation path cannot be cleaned, and in practice, cleaning cannot be performed for a long time. There is an inconvenience that the ability to convey the mixture is reduced.

In addition, since the cleaning agent and asphalt are scattered around during the cleaning operation, there is also a disadvantage that the cleaning agent and asphalt may fall on the operator who is supporting the hose, which may adversely affect the health of the operator.

The present invention has been made in view of the above circumstances, and is capable of reliably cleaning the upper surface of the bar feeder and the inner surface of the asphalt mixture conveying path, and the cleaning operation does not damage the health of workers. The purpose is to provide.

[Means for Solving the Problems] Therefore, the paving machine of the present invention is provided with a hopper and a conveyance path.
Provided with a nozzle that sprays a cleaning agent toward their inner surface,
A cleaning agent pipe for supplying the cleaning agent is connected to these nozzles.

[Operation] According to the paving machine of the present invention, the cleaning agent is supplied from the cleaning agent pipe to the nozzle, and the cleaning agent is sprayed from the nozzle toward the inner surface of the hopper and the inner surface of the conveying path. Residues of asphalt mixture adhering to the inner surface of the road can be washed off.

[Embodiment] An embodiment in which the paving machine of the present invention is applied to an asphalt finisher will be described below with reference to the accompanying drawings.

The asphalt finisher of this embodiment is a traveling vehicle body 1.
And a hopper 2 attached to the front of the traveling vehicle body 1, and an asphalt mixture (not shown) rotatably attached to the traveling vehicle body 1 and put into the hopper 2 behind the traveling vehicle body 1. An endless bar feeder 4 that conveys the sheet to the laid-out laying device 3 and an asphalt mixture conveying path 5 that is provided in the traveling vehicle body 1 and through which the bar feeder 4 is inserted.

The hopper 2 is formed in a flat bottomed rectangular tube shape having an open upper surface. The bottom of the hopper 2 is provided with an asphalt mixture outlet (not shown) at a portion corresponding to the moving path of the bar feeder 4, and the asphalt mixture is dropped from the hopper 2 onto the upper surface of the bar feeder 4. Is able to.

The spreading device 3 includes two spreading screws 6 and 7 arranged in parallel in the front-rear direction, and a screed unit 8 arranged behind these screws 6 and 7.
It consists of

The screws 6 and 7 are composed of shafts 6a and 7a and blades 6b and 7b spirally provided on the outer peripheral surfaces thereof, and are driven to rotate by a motor (not shown). .

The screed unit 8 has a leveling arm 8a attached to the traveling vehicle body 1 so as to be rotatable in a vertical plane along the longitudinal direction thereof, and a screed body 8b attached to the lower surface of the rear end of the leveling arm 8a. It consists of and. The screed body 8b includes the screw 6
The asphalt mixture expanded by 7 can be pressed and laid flat.

The asphalt mixture conveying path 5 is attached to the upper surface of the bar feeder 4, the lower surface of a plate-shaped deck 9 arranged above the bar feeder 4 and extending in the horizontal direction, and both sides of the traveling vehicle body 1. It is surrounded by a side plate (not shown) and is formed in a tunnel shape.

The construction of the asphalt finisher described above is well known in the art.

A nozzle 10 for injecting a cleaning agent toward the inner surface of the hopper 2 and the upper portion of the transport path 5 is provided. Similarly, a nozzle 10 for injecting a cleaning agent toward the upper surface of the screws 6 and 7 is provided above the screws 6 and 7. Here, in the upper part of the conveyance path 5, a plurality of pairs of nozzles 10 aligned in the longitudinal direction and the width direction of the traveling vehicle body 1 are arranged with their nozzles facing the upper surface of the bar feeder 4. ing.

A cleaning agent pipe 11 for supplying a cleaning agent to the nozzle 10 is connected to these nozzles 10.

That is, the support plates 2a are fixed along the upper portions of both side edges of the hopper 2, and the pair of first branch pipes 11a, 11a branched from the main pipe 11A of the cleaning agent pipe 11 are placed on the support plate 2a, U
It is fixed by a V-shaped bolt 2b and is attached to the first branch pipes 11a, 11a.
A plurality of nozzles 10 are attached at appropriate intervals in the longitudinal direction with their nozzles facing downward. In addition, 2c is
It is a cover that covers the nozzle 10, the first branch pipes 11a, 11a, and the like excluding the injection port portion. Further, as shown in FIG. 4, on the lower surface of the deck 9, along the arrangement position of the nozzles 10, the traveling vehicle 1
A second branch pipe 11b branched from the main pipe 11A meandering in the width direction of the vehicle is fixed by a U bottle 9a, and a nozzle having an injection port inclined in the longitudinal direction of the traveling vehicle body 1 in the second branch pipe 11b.
Ten pairs are attached via a T-joint 11B. Further, a third branch pipe 11c branched from the main pipe 11A is fixed to a support frame of each screw 6, 7 and is branched from the third branch pipe 11c above each screw 6, 7 along its axial direction. A plurality of nozzles 10 are attached to the provided spray pipes 11d and 11e at appropriate intervals in the longitudinal direction with their nozzles facing downward.

One end of the main pipe 11A of the cleaning agent pipe 11 is connected to a cleaning agent tank 12 mounted on the traveling vehicle body 1 via a pump 13. The main pipe 11A of the cleaning agent pipe 11 communicates with the pipeline,
A solenoid valve 14 for shutting off is connected. A relief valve 15 is connected in parallel with the pump 13 to the main pipe 11A between the cleaning tank 12 and the solenoid valve 14. The relief valve 15 is configured to return the cleaning agent in the cleaning agent piping 11 to the tank 12 and prevent the cleaning agent piping 11 from bursting when the internal pressure of the cleaning agent piping 11 rises excessively. .

In addition, 16 is a wheel attached to the traveling vehicle body 1.

Next, a method of using the asphalt finisher of this embodiment configured as described above will be described.

First, when spreading the asphalt mix on the road surface,
The same operation as the conventional one may be performed. That is, the asphalt mixture is put into the hopper 2, the asphalt mixture is supplied from the hopper 2 to the upper surface of the bar feeder 4, the asphalt mixture is conveyed by the bar feeder 4 to the laying device 3, and the asphalt mixture of the bar feeder 4 is fed. Spread the asphalt mixture down from the rear end to the left and right with the screws 6 and 7,
The screed body 8b allows the asphalt mixture to be spread on the road surface.

Then, if the asphalt mixture laying work is carried out for a certain period of time, if the asphalt mixture residue adheres to the inner surface of the hopper 2, the upper surface of the bar feeder 4 and the surfaces of the screws 6 and 7, it is laid. After completion of the leveling-in work, the solenoid valve 14 is turned on, and then the pump 13 is driven. As a result, the nozzle is
A cleaning agent is sprayed from 10 to the inner surface of the hopper 2, the upper surface of the bar feeder 4, and the surfaces of the screws 6 and 7, and among them, the residue of the asphalt mixture adhering to the surface is washed off.

In the conventional cleaning method, the cleaning agent cannot be sprayed to the inside of the conveying path 5, and the upper surface of the bar feeder 4 and the inner surface of the conveying path 5 can be cleaned unless the asphalt finisher is disassembled and repaired. However, according to the asphalt finisher of the present embodiment, as described above, the pump 13 can be driven and the cleaning agent can be sprayed from the nozzle 10 to the inner surface of the transport path 5. Therefore, it is necessary to disassemble the asphalt finisher. Therefore, the cleaning work can be surely performed as necessary at the end of the laying work.

Therefore, it is possible to prevent the residue of the asphalt mixture from being stacked on the upper surface of the bar feeder 4 and to maintain the transport amount of the asphalt mixture at a predetermined amount.

Further, according to the present embodiment, the cleaning agent is sprayed onto the inner surface of the hopper 2, the upper surface of the bar feeder 4, and the surfaces of the screws 6 and 7 through the cleaning agent pipe 11, so that the operator can pump the pump. After the operation such as 13 is completed, it can be evacuated to a place separated from the paving machine during the cleaning work.

Therefore, unlike the conventional method in which a worker sprays a cleaning agent with a hose, even if the cleaning agent or asphalt is scattered around, the cleaning agent or asphalt does not fall on the operator. Therefore, there is an effect that the safety and health of the worker can be achieved.

In the above, the case where the present invention is applied to an asphalt finisher has been described, but the present invention is not limited to this, and it can be applied to other pavement machines such as base paver and road pavement reclaiming machine. Of course.

[Effects of the Invention] In the paving machine of the present invention, nozzles for injecting the cleaning agent toward the inner surfaces of the hopper and the conveying path are provided, and the cleaning agent supply pipe for supplying the cleaning agent is connected to these nozzles. As a result, the cleaning work can be performed reliably and easily as needed at the end of the leveling work without disassembling the paving machine. Therefore, there is an effect that the amount of asphalt mixture carried by the bar feeder can be maintained at a predetermined amount.

Also, since the worker can evacuate to a place away from the paving machine after performing the operation of spraying the cleaning agent from the nozzle, it is possible that the cleaning agent or asphalt is scattered around during the cleaning operation. However, the cleaner and asphalt do not fall on the worker. Therefore, there is also an effect that the safety and health of the worker can be achieved.

[Brief description of drawings]

1 to 4 are views showing an embodiment of a paving machine of the present invention. FIG. 1 is a side view of the paving machine, FIG. 2 is a circuit diagram of a cleaning agent pipe, and FIG. 3 (a) ( FIG. 4B is a front view and a side view showing a nozzle mounting state in the hopper, and FIG. 4A and FIG.
FIG. 4A is a front view and a side view showing a mounting state of a nozzle in a transport path. 1 ... Traveling vehicle, 2 ... Hopper, 3 ... Spreading device, 4 ... Bar feeder, 5 ... Asphalt mixture transport path, 10 ... Nozzle, 11 ... Cleaning agent piping.

Claims (1)

[Scope of utility model registration request] 1. A running car body, a hopper attached to the running car body, and a spreader rotatably mounted on the running car body and provided with an asphalt mixture to be fed to the hopper behind the running car body. An endless bar feeder that conveys toward the device, and an asphalt mixture conveying path that is provided in the traveling vehicle body and through which the bar feeder is inserted are provided, and the hopper and the conveying path face the inner surfaces thereof. A paving machine characterized in that nozzles for injecting a cleaning agent are provided, and cleaning agent piping for supplying the cleaning agent is connected to these nozzles.