JP5336463B2 - Special asphalt mix asphalt finisher - Google Patents

Description

  The present invention relates to an asphalt finisher for a special asphalt mixture, and in particular, a special asphalt mixture that can be easily switched to an asphalt finisher for a normal asphalt mixture and can reduce equipment costs. Asphalt finisher.

  Road pavement using special asphalt mixture is increasing due to recent demands for greenhouse gas reduction and shortening of construction period and cost reduction in construction work. As one of the methods, there is a road pavement using a special asphalt mixture which starts to solidify by spraying with a special liquid or water (hereinafter simply referred to as “liquid”). In the case of a special asphalt mixture that starts solidifying by spraying a liquid, the spray timing, spray location, and spray amount of the liquid greatly affect pavement quality. For this reason, it is necessary to pass a predetermined amount of special asphalt mixture through the liquid spray region. Moreover, in order to make the amount of liquid contained in the pavement completed by the special asphalt mixture thereafter constant, it is necessary to have a mechanism for adjusting the amount of special asphalt mixture that passes through the liquid spray area, It is required to make adjustments easy even during construction.

  A conventional asphalt finisher for a special asphalt mixture provided with a mechanism for adjusting the amount of the special asphalt mixture passing through the liquid spray region will be described with reference to FIG. The asphalt finisher for special asphalt mixture is provided with a hopper (not shown) for storing the special asphalt mixture at the front part of the main body tractor part 1, and the special asphalt mixture stored in the hopper is connected to the main body tractor part by a conveyor (not shown). 1 is transported to the rear portion, and the transported special asphalt mixture is spread in the width direction of the main body tractor portion 1 with the screw 2. A screed 3 for spreading and leveling the spread special asphalt mixture is supported on the rear end of the screed arm 4 behind the screw 2.

  The screed arm 4 is usually formed longer than the required amount in the asphalt finisher for asphalt mixture, the screed 3 is moved to the rear side by the required amount, and a required interval is provided between the screw 2 and the screed 3. The screed arm 4 at the required interval is provided with a liquid spraying function for spraying liquid and a composite partitioning function for restricting the special asphalt composite passing through the area where the liquid is sprayed to a predetermined amount. A special material construction device 5 is attached. The liquid spraying function is obtained by a liquid spraying device (not shown) installed in the special compound construction equipment 5, and the composite partitioning function is not shown in the composite partition board (not shown) installed in the special composite construction equipment 5. Is obtained. As described above, the asphalt finisher shown in FIG. 5 is configured as a special asphalt finisher for special asphalt mix with the special mix construction equipment 5 fixed between the screw 2 and the screed 3.

  Further, as a conventional technique related to a composite partition plate installed in the above-mentioned special composite material construction device, for example, an asphalt composite material adjusting device in a pavement machine as described below is known. In this conventional technology, in a paving machine equipped with a mold board, a shaft is rotatably disposed below a pipe shaft provided at the upper end of the mold board, and the axial movement of the shaft is converted into the vertical direction. An operation direction changing means is provided to connect the upper end portion of the mold board, and one end portion of the shaft projects from the outer portion of the mold board to form an operation portion. By rotating the shaft while observing the amount of asphalt mixture accumulated in front of the screed at the operation section near the mold board, the mold board moves up and down to make a gap between the lower end of the mold board and the road surface. Can be changed. In this way, the height of the mold board can be adjusted while observing the amount of asphalt mixture, so even if the amount of asphalt mixture collected before screed changes depending on the type and temperature of the mixture, By appropriately capturing the situation and changing the height of the mold board, the amount of the asphalt mixture can be maintained at a constant amount (see, for example, Patent Document 1).

Japanese Patent No. 3713247

  In the conventional asphalt finisher for special asphalt mixture shown in FIG. 5, a special mix construction equipment is fixed between the screw and the screed, and is configured as a special asphalt mix asphalt finisher. Yes.

  Moreover, in the prior art described in Patent Document 1, even if the amount of asphalt mixture accumulated before screed changes depending on the type of mixture, temperature, etc., the asphalt is changed by changing the height of the mold board. It only describes that the amount of the composite material can be kept constant.

  By the way, road pavement using a special asphalt mixture that starts solidifying by spraying a liquid is a pavement method that is increasing due to the recent shortening of construction period and cost reduction in construction work.

  Therefore, one asphalt finisher for special asphalt mixes can be easily switched to an asphalt finisher for ordinary asphalt mixes, and technical problems to be solved in order to reduce equipment costs arise. The present invention aims to solve this problem.

The present invention has been proposed in order to achieve the above object, and the invention according to claim 1 is an asphalt finisher for special asphalt mixture for paving a special asphalt mixture which starts solidifying by spraying a liquid. There,
The screed arm that is formed long enough to connect the screed that spreads and smoothes the special asphalt mixture to the main body tractor part is divided into two parts ,
Furthermore, a special composite material having a liquid spraying function for spraying the liquid and a composite material partitioning function for restricting the special asphalt composite material passing through the region to which the liquid is sprayed to a predetermined amount in the divided portion of the screed arm. While installing the screed arm extension bracket with the construction equipment attached ,
Provided is an asphalt finisher for special asphalt mixture characterized in that, when constructing a normal asphalt mixture, a screed arm divided into two can be switched so as to be directly connectable .

  According to this configuration, the asphalt finisher for special asphalt composites is equipped with a screed arm extension bracket with a special composite material construction device attached to the split part of the screed arm by bolt fastening etc. A spray region is formed. The amount of the special asphalt mixture passing through the liquid spray area is regulated to a predetermined amount by the composite partition function, and the amount of liquid contained in the finished pavement is almost constant by the special asphalt mixture. Performance is achieved. When paving normal asphalt mixes, the bolt fastening etc. is released, the screed arm extension bracket is removed, and the two split screed arm parts are directly connected by bolt fastening etc., so that the asphalt finisher is usually asphalt Switch to compound material.

The invention of claim 2 is a special asphalt mix asphalt finisher for paving a special asphalt mix that starts solidifying by spraying a liquid,
The screed arm that is formed long enough to connect the screed that spreads and smoothes the special asphalt mixture to the main body tractor part is divided into two types,
Furthermore, a screed arm extension bracket is attached to the split part of the screed arm.
By wearing
A special material construction device having a liquid spraying function for spraying the liquid and a composite material partitioning function for regulating the special asphalt composite material that passes through the region where the liquid is sprayed to a predetermined amount is attached to the main body tractor with a screed. An asphalt finisher for a special asphalt mixture characterized in that it can be attached to the front end side of a screed that is connected by an arm and spreads and smoothes the special asphalt mixture.

  According to this configuration, in the asphalt finisher for special asphalt composite, the special composite construction equipment is attached to the front end side of the screed, and a liquid spray region is formed immediately in front of the screed. The amount of the special asphalt mixture passing through the liquid spray area is regulated to a predetermined amount by the composite partition function, and the amount of liquid contained in the finished pavement is almost constant by the special asphalt mixture. Performance is achieved. When paving a normal asphalt mixture, the asphalt finisher can be switched to an ordinary asphalt mixture by removing the special compound construction equipment from the front end side of the screed.

  According to the first aspect of the present invention, the screed arm extension bracket is attached to the split part of the screed arm, and the screed arm extension bracket is removed to remove the screed arm extension bracket. By connecting directly, there is an advantage that one asphalt finisher for special asphalt mixture can be easily switched to an asphalt finisher for normal asphalt mixture and the equipment cost can be reduced.

  The invention according to claim 2 can easily switch one asphalt finisher for special asphalt mix to an asphalt finisher for normal asphalt mix by removing the special mix construction equipment from the front end side of the screed. There is an advantage that it can be used and the equipment cost can be reduced.

(A) A side view showing a partially broken asphalt finisher for special asphalt mixture according to Embodiment 1 of the present invention, (b) a plan view of a long screed arm portion, and (c) a plan view of a long screed arm portion. The main part side view which shows the attachment part of the screed arm extension bracket with respect to the division part of a screed arm further in detail in the asphalt finisher for special asphalt compound materials of FIG. FIG. 2 is a partially cutaway side view showing a state in which the asphalt finisher for a special asphalt mixture in FIG. 1 is switched to a normal asphalt finish asphalt finisher. The principal part side view of the asphalt finisher for special asphalt compound materials which concerns on Example 2 of this invention. The side view which shows a partially broken asphalt finisher only for the conventional special asphalt mixture construction.

  In order to achieve the object of the present invention, it is possible to easily switch a single asphalt finisher for special asphalt mixture to an asphalt finisher for normal asphalt mixture to reduce equipment cost. The asphalt finisher for special asphalt mixture for paving the special asphalt mixture which starts to solidify, and the screed arm for connecting the special asphalt mixture and leveling the screed to the main body tractor part is divided into two parts. A special material construction device provided with a liquid spraying function for spraying the liquid and a composite material partitioning function for regulating the special asphalt composite material that passes through the region to which the liquid is sprayed to a predetermined amount in the split part of the screed arm This is realized by attaching a screed arm extension bracket with .

  A preferred embodiment 1 of the present invention will be described below with reference to FIGS. In FIG. 1 to FIG. 3 and FIG. 4 showing a second embodiment to be described later, the same or equivalent components as those in FIG. 5 are denoted by the same reference numerals as those in FIG. First, the structure of the asphalt finisher for special asphalt mixture according to the first embodiment will be described with reference to FIGS. 1 and 2.

  In FIG. 1, a screed arm 6 that connects the main body tractor 1 and the screed 3 is divided into a long screed arm 6 </ b> A and a short screed arm 6 </ b> B. A screed arm extension bracket 7 to which is attached is attached. By attaching the screed arm extension bracket 7, as shown in FIG. 1B, the screed 3 is moved rearward by a required amount to form a required space between the screw 2 and the screed 3, and the special composite material construction is performed. The equipment 5 is suspended from the screed arm extension bracket 7 so as to be located at the required interval. When shortening the space between the screw 2 and the screed 3, as shown in FIG. 1 (c), the short screed arm is not provided between the long screed arm 6A and the screed 3 without attaching the screed arm extension bracket 7. It implements by connecting with the volt | bolt 8 through 6B.

  As shown in FIG. 2, the suspension plate 5 a of the special material construction equipment 5 is integrally fixed to the screed arm extension bracket 7. The screed arm extension bracket 7 itself is attached to the short screed arm 6B side by fastening a bolt 8, and the suspension plate 5a is attached to the long screed arm 6A side by fastening another bolt 8, so that the screed arm 6 A screed arm extension bracket 7 to which a special composite material construction device 5 is attached is attached to the divided portion.

  Next, the operation of the asphalt finisher for special asphalt composite material configured as described above will be described. In the asphalt finisher for special asphalt mixture, a screed arm extension bracket 7 to which a special compound construction equipment 5 is attached is attached to a split portion of the screed arm 6 by fastening bolts 8. The special composite material construction device 5 is provided with a liquid spraying function by a liquid spraying device (not shown) installed therein, and a composite material partitioning function by a composite partitioning plate (not shown) provided therein.

  For this reason, a liquid spray area is formed in front of the screed 3 by the liquid spray function provided in the special compound construction equipment 5, and the special asphalt which passes through the liquid spray area by the composite partition function. The amount of mixed material is regulated to a predetermined amount. As a result, the amount of liquid contained in the pavement completed with the special asphalt mixture is substantially constant, and a predetermined pavement performance is achieved.

  When paving a normal asphalt mixture with an asphalt finisher, the bolts 8 of the split part of the screed arm 6 are released and the screed arm extension bracket 7 is removed from the split part of the screed arm 6, as shown in FIG. In addition, the asphalt finisher is usually switched to asphalt composite by directly connecting the long screed arm 6A and the short screed arm 6B, which are divided into two, by fastening the bolts 8.

  As described above, in the asphalt finisher for the special asphalt mixture according to the first embodiment, the screed arm extension bracket is released by releasing the fastening of the bolt 8 in which the screed arm extension bracket 7 is attached to the divided part of the screed arm 6. 7 is removed, and the long screed arm 6A and the short screed arm 6B, which are divided into two parts, are directly connected by fastening bolts 8, so that one asphalt finisher for special asphalt mix can be easily used for normal asphalt mix. It can be used by switching to an asphalt finisher, and the equipment cost can be reduced.

  An asphalt finisher for special asphalt mixture according to Embodiment 2 of the present invention will be described with reference to FIG. In the second embodiment, the special composite material construction device 5 is attached to the front end side of the screed 3 that is connected to the screed arm 6 and spreads and smoothes the special asphalt composite material.

  As described above, the special composite material construction device 5 is attached to the front end side of the screed 3, so that a liquid spray region is formed in front of the screed 3 by the liquid spray function of the special composite material construction device 5. In addition, the amount of the special asphalt mixture that passes through the spray region of the liquid is regulated to a predetermined amount by the mixture partition function. As a result, as in the first embodiment, the amount of liquid contained in the pavement completed with the special asphalt mixture is substantially constant, and a predetermined pavement performance is achieved.

  When paving an ordinary asphalt mixture, the asphalt finisher is switched to an ordinary asphalt mixture by removing the special compound construction equipment 5 from the front end side of the screed 3. In the second embodiment, the special compound construction equipment 5 is attached to the front end side of the screed 3, so that the removal or the like becomes easy.

  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.

  It is indispensable to switch asphalt finisher for one asphalt mixture easily to asphalt finisher for other asphalt mixture to reduce equipment cost. It can be widely applied to asphalt finishers.

DESCRIPTION OF SYMBOLS 1 Main body tractor part 2 Screw 3 Screed 5 Special material construction equipment 6 Screed arm 7 Screed arm extension bracket 8 Bolt

Claims (2)

Special asphalt mix asphalt finisher for paving special asphalt mix that begins to solidify by spraying liquid,
The screed arm that is formed long enough to connect the screed that spreads and smoothes the special asphalt mixture to the main body tractor part is divided into two parts ,
Furthermore, a special composite material having a liquid spraying function for spraying the liquid and a composite material partitioning function for restricting the special asphalt composite material passing through the region to which the liquid is sprayed to a predetermined amount in the divided portion of the screed arm. While installing the screed arm extension bracket with the construction equipment attached ,
An asphalt finisher for special asphalt mixes, which can be switched so that the screed arm divided into two can be connected directly when constructing normal asphalt mixes. Special asphalt mix asphalt finisher for paving special asphalt mix that begins to solidify by spraying liquid,
The screed arm that is formed long enough to connect the screed that spreads and smoothes the special asphalt mixture to the main body tractor part is divided into two types,
Furthermore, a screed arm extension bracket is attached to the split part of the screed arm.
By wearing
A special material construction device having a liquid spraying function for spraying the liquid and a composite material partitioning function for regulating the special asphalt composite material that passes through the region where the liquid is sprayed to a predetermined amount is attached to the main body tractor with a screed. An asphalt finisher for a special asphalt mixture characterized in that it can be attached to the front end side of a screed that is connected by an arm and spreads and smoothes the special asphalt mixture.

Images