JP4319773B2 - Special pavement material leveling equipment - Google Patents

Description

【００２３】
また、各スクリュー１１，１２，１３の他の構成としては、舗設の幅員方向に伸縮が可能な可変長スクリューがあり、例えば以下の二つの実施形態が考えられる。
可変長スクリューの第一実施形態は、図６及び図７に示すように、フレーム２において、そのフレーム２に設けられたガイドレール４１に沿って伸縮するスライドフレーム２ａ，２ａを備え、そのスライドフレーム２ａ，２ａは、連動するサイドプレート３，３を下部に備え、そのサイドプレート３，３の間に、長手方向に対して上下に二分割され、ガイドレール４０に沿って伸縮する可変長スクリュー１１ａを備えるものである。
スライドフレーム２ａとフレーム２はシリンダー４２で結合されていて、そのシリンダー４２の伸縮によって、図６に示すように、可変長スクリュー１１ａ、スライドフレーム２ａ，２ａ及びサイドプレート３，３が、連動して舗設の幅員方向に伸縮できる。この実施形態はフレーム２に備えられている他の各可変長スクリュー１２ａ，１３ａに関しても同様である。
そして、各可変長スクリュー１１ａ，１２ａ，１３ａは、長手方向の端部に設けられた油圧モータ１４，１５により回転され、それぞれ同一径の回転軸の周囲に、長手方向に同一な形状の螺旋状の回転翼を有する。それらの回転翼の径、ピッチ、及び回転方向は、前述した各スクリュー１１，１２，１３と同様である。
また、ガイドレール４０及びガイドレール４１は、曲げに対する強度を大きくすることを考えると、図７に示すように、各可変長スクリューと各スライドフレームに各二組あるのが好ましい。
【００２４】
これら各可変長スクリュー１１ａ，１２ａ，１３ａを備える装置１は、敷き均しの幅ｗを各可変長スクリュー１１ａ，１２ａ，１３ａ及び、スライドフレーム２ａ，２ａの伸縮によって変更できる。
【００２５】
可変長スクリューの第二実施形態は、図８及び図９に示すように、フレーム２において、そのフレーム２に設けられたガイドレール４１に沿って伸縮するスライドフレーム２ｂ，２ｂを備え、そのスライドフレーム２ｂ，２ｂは、連動するサイドプレート３，３を下部に備え、そのサイドプレート３，３の間に、フレーム中央固定部４３を境として左右に二分割されていて、その左右端部が長手方向に対して上下に二分割されていて、ガイドレール４０に沿って伸縮をする可変長スクリュー１１ｂを備える。
スライドフレーム２ｂとフレーム２はシリンダー４２で結合されていて、そのシリンダー４２の伸縮によって、図８に示すように、可変長スクリュー１１ｂ、スライドフレーム２ｂ，２ｂ及びサイドプレート３，３が、連動して舗設の幅員方向に伸縮できる。この実施形態はフレーム２に備えられている他の各可変長スクリュー１２ｂ，１３ｂに関しても同様である。
そして、各可変長スクリュー１１ｂ，１２ｂ，１３ｂは、長手方向の両端部に設けられた油圧モータ１４，１５により、フレーム２の長手方向の中央にあるスクリュー固定部４３を境として、左右で独立した駆動及び回転方向が可能である。各可変長スクリュー１１ｂ，１２ｂ，１３ｂが有する回転翼の形状、回転翼の径、及びピッチは、前述した各スクリュー１１，１２，１３と同様である。
【００２６】
これら各可変長スクリュー１１ｂ，１２ｂ，１３ｂを備える装置１は、敷き均しの幅ｗを各可変長スクリュー１１ｂ，１２ｂ，１３ｂ及び、スライドフレーム２ａ、２ａの伸縮によって変更できる。さらに、敷き均しの際に、舗設表面に特殊舗装材料の余剰や不足が生じた場合に、特殊舗装材料の移動方向を各可変長スクリュー１１ｂ，１２ｂ，１３ｂの回転方向を変更することで調整し、余剰分の特殊舗装材料を短い移動距離で不足部分に補充させることができる。
【００２７】
ここで、装置１において、ウッドファイバーＦの供給と装置１の進行に関する構成としては、例えば以下の三つの実施形態が考えられる。
【００２８】
まず、装置１の第一実施形態として、図１及び図２に示すように、車両により牽引されて進行し、その車両から搬送されるウッドファイバーＦの供給を受けるタイプの装置１が考えられる。
この車両は、例えばスクリード部を取り外した既存のアスファルトフィニッシャのトラクタ部２０である。このトラクタ部２０は、図１及び図２（ａ）に示すように、車体の前部に備えられ、ウッドファイバーＦが投入されるホッパ２１と、車体の前部から後部にかけて備えられ、ウッドファイバーＦを搬送するバーフィーダ２２と、車体の後部に備えられ、ウッドファイバーＦを撒き出すスクリュスプレッダ（図示外）と、車体の中央部に備えられ、車輪２５に駆動力を供給するエンジン２３と、車体の後部に備えられ、車輪２５の駆動及び車体の進行方向をコントロールする運転装置２４と、車体の下部に備えられる車輪２５と、油圧モータ１４，１５に圧油を供給する油圧源（図示外）と、を有し、車体の後部から突出する連結棒２６を介して、装置１と連結されている。
この実施形態によれば、ホッパ２１に投入されたウッドファイバーＦは、バーフィーダ２２により車体の後方に搬送され、スクリュスプレッダにより装置１の前方に撒き出され、前方に向けて進行する装置１を通過して、後方に向けて敷き均される。
【００２９】
次に、装置１の第二実施形態として、図３及び図４に示すように、自走により進行し、別途の運搬車により前方に降ろされるウッドファイバーＦの供給を受けるタイプの装置１′が考えられる。
この場合の装置１′は、先述したフレーム２、サイドプレート３，３、各スクリュー１１，１２，１３、油圧モータ１４，１５の他に、車輪５に駆動力を供給する動力装置（図示外）と、車輪５の駆動及び車体の進行方向をコントロールする運転装置４と、車輪５と、油圧モータ１４，１５に油圧を供給する油圧源（図示外）と、を有する。
この実施の形態によれば、別途の運搬車であるタイヤシャベル３０により装置１′の前方に降ろされたウッドファイバーＦは、前方に向けて進行する装置１′を通過して、後方に向けて敷き均される。
【００３０】
さらに、装置１の第三実施形態として、図示しないが、ウッドチップ、ウレタン樹脂、及び砂などを混合してウッドファイバーＦを製造する、移動式ミキサーと組み合わせるタイプの装置が考えられる。
この場合の装置は、移動式ミキサーに牽引されるタイプでも良く、移動式ミキサーと別体のタイプでも良い。
【００３１】
最後に、装置１を用いてウッドファイバーＦを敷き均す作業について、図５を参照しつつ説明する。なお、以下においては、表１に示される構成を有する装置１を例に、説明を行う。
【００３２】
（１）まず、図１及び図２（ａ）に示すように、装置１の前方における舗設面Ｈ上に、ウッドファイバーＦを供給する。具体的には、ウッドファイバーＦは、図１及び図２に示す装置１では、ホッパ２１に投入されバーフィーダ２２により搬送されスクリュスプレッダにより撒き出されて装置１の前方に供給され、図３及び図４に示す装置１′では、タイヤシャベル３０により装置１′の前方に降ろされて供給される。ここでのウッドファイバーＦは、図５（ａ）に示すように、山のように盛り上がっている。
【００３３】
（２）次に、装置１を前方に向けて進行させ、前方から供給されるウッドファイバーＦを、一次スクリュー１１により横方向に敷き広げる。ここでのウッドファイバーＦは、図５（ｂ）に示すように、大きく外側に敷き広げられ、敷き均しの幅ｗがサイドプレート３，３の間隔に規制されて一定に保たれる一方、その表面は波状を呈している。
【００３４】
（３）次に、装置１を前方に向けてさらに進行させ、横方向に敷き広げられたウッドファイバーＦの表面を、二次スクリュー１２により平均に均す。ここでのウッドファイバーＦは、図５（ｃ）に示すように、適度に内側に戻され、その表面は若干の凹凸を呈している。
【００３５】
（４）次に、装置１を前方に向けてさらに進行させ、平坦に均されたウッドファイバーＦの表面を、三次スクリュー１３により平坦に均して仕上げる。ここでのウッドファイバーＦは、図５（ｄ）に示すように、適切に平坦に均され、敷き均しの厚さｔが三次スクリュー１３と舗設面Ｈとの間隔に規制されて一定に保たれ、その表面は良好な平坦精度に保たれている。
【００３６】
（５）最後に、装置１を前方に向けてさらに進行させることにより、装置１の後方に、舗装表面の平坦精度が良く、敷き均しの幅ｗ及び敷き均しの厚さｔが一定に保たれた、ウッドファイバー舗装が形成される。
【００３７】
なお、以上においては、主に装置１に関して説明を行ったが、その趣旨に反しない限りにおいて、装置１′に関しても同様である。
【００３８】
【発明の効果】
以上のように構成される本発明に係る特殊舗装材料敷き均し装置によれば、ウッドファイバーなどの特殊舗装材料を敷き均すにあたり、施工幅員に制限されることなく、作業能率が良く、舗装表面の平坦精度が良く、さらに敷き均しの幅及び厚さを一定に保つことができるような、優れた舗装を可能とする、という顕著な効果を奏する。
【図面の簡単な説明】
【図１】本発明の装置１の第一実施形態に係る装置を表す平面図である。
【図２】本発明の装置１の第一実施形態に係る装置を表す図であり、（ａ）は正面図、（ｂ）は右側面図である。
【図３】本発明の装置１の第二実施形態に係る装置を表す平面図である。
【図４】本発明の装置１の第二実施形態に係る装置を表す図であり、（ａ）は正面図、（ｂ）は右側面図である。
【図５】（ａ）は装置の前方、（ｂ）は一次スクリューの直後、（ｃ）は二次スクリューの直後、（ｄ）は装置の後方における、ウッドファイバーの敷き均しの状態を表す断面図である。
【図６】本発明の可変長スクリューの第一実施形態を表す図であり、（ａ）は縮時の右側面図、（ｂ）は伸時の右側面図である。
【図７】本発明の可変長スクリューの第一実施形態を表すＡ―Ａ断面図である。
【図８】本発明の可変長スクリューの第二実施形態を表す図であり、（ａ）は縮時の右側面図、（ｂ）は伸時の右側面図である。
【図９】本発明の可変長スクリューの第二実施形態を表す伸時の平面図である。
【符号の説明】
１ 装置（特殊舗装材料敷き均し装置）
１′ 装置（特殊舗装材料敷き均し装置）
２ フレーム
３ サイドプレート
４ 運転装置
５ 車輪
１１ 一次スクリュー
１２ 二次スクリュー
１３ 三次スクリュー
１１ａ 可変長一次スクリュー
１２ａ 可変長二次スクリュー
１３ａ 可変長三次スクリュー
１１ｂ 可変長一次スクリュー
１２ｂ 可変長二次スクリュー
１３ｂ 可変長三次スクリュー
１４ 油圧モータ
１５ 油圧モータ
２０ （アスファルトフィニシャの）トラクタ部
２１ ホッパ
２２ バーフィーダ
２３ エンジン
２４ 運転装置
２５ 車輪
２６ 連結棒
３０ タイヤショベル
４０ ガイドレール
４１ ガイドレール
４２ シリンダー
４３ スクリュー固定部
Ｃ 中央線
Ｆ ウッドファイバー（特殊舗装材料）
Ｈ 舗設面[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a special pavement material leveling apparatus (hereinafter also simply referred to as “apparatus”) for leveling a special pavement material such as wood fiber having a property of high adhesiveness and low bulk specific gravity.
[0002]
[Prior art]
The wood fiber is made of wood crushing chips (wood chips), binders such as urethane resin, and sand, etc., and uses the color and elasticity of wood, for example in park walkways. Used as paving material.
[0003]
Conventionally, the leveling (paving) of special pavement materials such as wood fiber has been mainly performed manually. That is, after cleaning the asphalt pavement, special pavement materials such as wood fiber were removed and finished using rakes or plastering irons.
[0004]
[Problems to be solved by the invention]
However, when laying and leveling special pavement materials such as wood fiber, it is possible to finish cleanly in small-scale construction by conventional human construction, but in large-scale construction, the operation efficiency is poor, and There was a problem that the flatness of the pavement surface was poor.
[0005]
Also, in recent years, incineration of garbage and the like has been restricted due to the problem of global environmental pollution. Building waste materials and root stocks can be crushed without incineration and laid on the sidewalk. It tends to be used for placing at the root of trees. Since the machine which performs this crushing already exists, in order to perform large-scale pavement construction, a machine which performs leveling is required.
[0006]
Here, it is conceivable to use an asphalt finisher for ordinary pavement work as a machine for leveling. However, special pavement materials such as wood fibers, which are the objects of leveling, have the property that they are poor in fluidity due to their large tackiness, and have a low bearing capacity due to their low bulk specific gravity. Therefore, since the screed for finishing the asphalt finisher sinks, there has been a problem that it is impossible to ensure a predetermined spread thickness.
[0007]
Therefore, the present invention is not limited to the construction width when spreading special pavement materials such as wood fiber, the work efficiency is good, the flatness of the pavement surface is good, and the width and thickness of the pavement leveling. It is an object of the present invention to provide a special pavement material leveling device that enables excellent pavement that can maintain a constant level of the pavement.
[0008]
[Means for Solving the Problems]
The present invention is configured to solve the above-mentioned problems, and the invention according to claim 1 (see, for example, FIGS. 1 to 4): “A special pavement material (wood fiber F) supplied from the front is used. , A device that spreads toward the rear while proceeding toward the front, and in order from the front, the primary screw 11 that spreads the special pavement material supplied from the front in the horizontal direction, and the spread in the horizontal direction A secondary screw 12 for leveling the surface of the special pavement material averaged, and a tertiary screw 13 for leveling and finishing the surface of the special pavement material leveled on the average , Reference numerals 12 and 13 denote a special pavement material leveling device 1 ”that can be expanded and contracted in the width direction of the pavement by being vertically divided into two in the longitudinal direction .
According to this, when spreading special pavement materials such as wood fiber, it is possible to perform mechanical construction instead of manual construction, so that work efficiency is good and flatness of the pavement surface is good, and excellent pavement is possible. Become.
Moreover, since the leveling width w can be changed, excellent paving is possible without being limited by the construction width.
[0009]
Further, the invention according to claim 2 (see, for example, FIGS. 1 to 4), “The above-mentioned special pavement material spreader is arranged in parallel to the traveling direction at a predetermined interval from each other. The left and right side plates 3 and 3 slide on the pavement surface H. The screws 11, 12, and 13 are spaced apart from the pavement surface H in a predetermined direction with respect to the traveling direction. 2. The special pavement material leveling device 1 according to claim 1, wherein the special pavement material leveling device 1 is arranged between the side plates and rotatably provided between the side plates.
According to this, for example, as shown in FIG. 5 (d), the spread width w is regulated by the distance between the side plates 3 and 3, and the spread thickness t is set to each screw 11, 12, 13 ( In particular, since the distance between the rearmost tertiary screw 13) and the pavement surface H is regulated and can be kept constant, excellent pavement is possible.
[0011]
Further, the invention according to claim 3 (see, for example, FIG. 8 or FIG. 9), “The screws 11, 12, and 13 can be independently driven on the left and right sides of the center line C in the longitudinal direction, In addition, the special pavement material leveling device 1 ”according to claim 1 or 2 , wherein the rotation direction can be arbitrarily changed.
According to this, when surplus or shortage of special pavement material occurs on the pavement surface during leveling, the moving direction of the surplus special pavement material is changed to the rotation direction of each screw 11b, 12b, 13b. This makes it possible to perform appropriate operations such as quickly adjusting the surface of the pavement to the average by replenishing the excess pavement material over a short moving distance and making the pavement surface average quickly. Become.
[0012]
According to a fourth aspect of the invention (see, for example, FIGS. 1 to 4), the screws 11, 12, and 13 each have a rotor blade having a symmetrical shape with respect to the center line C in the longitudinal direction. When comparing the diameter, pitch, and rotation direction of each rotor blade, the primary screw 11 has a large diameter, a large pitch, and a normal rotation, and the secondary screw 12 has a small diameter, a medium pitch, 4. The special pavement material spread leveling according to any one of claims 1 to 3 , wherein the tertiary screw 13 has a small diameter, a small pitch, and a normal rotation. Device 1 ”.
According to this, the wood fiber F is spread widely on the outside as shown in FIG. 5 (b), for example, and returned to the inside appropriately as shown in (c), and appropriately as shown in FIG. 5 (d). Since the work of leveling can be performed properly, excellent pavement is possible.
[0013]
In addition, the invention according to claim 5 (see, for example, FIG. 1 or FIG. 2), “The special pavement material spreader is advanced by being pulled by a vehicle (tractor portion 20), The pavement material (wood fiber F) is transported and supplied from the vehicle. The special pavement material leveling device according to any one of claims 1 to 4 , 1 ”.
According to this, for example, by using the tractor part 20 of the existing asphalt finisher from which the screed part is removed as the vehicle, it is possible to perform excellent pavement while obtaining the above effect.
[0014]
Furthermore, the invention according to claim 6 (see, for example, FIG. 3 or FIG. 4) is as follows: “The special pavement material leveling device is self-propelled, and / the special pavement material (wood fiber F) The special pavement material spread level according to any one of claims 1 to 4 , characterized in that is supplied by being lowered by a separate transport vehicle (tire shovel 30). Device 1 ′ ”.
According to this, for example, by using the tire shovel 20 as the separate transport vehicle, it is possible to perform excellent pavement while obtaining the above-mentioned effect with a single device.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of a special pavement material leveling apparatus (apparatus 1) according to the present invention will be described in detail with reference to FIGS. In each plan view and front view, the left side is referred to as the front, and the right side is referred to as the rear, and the device 1 proceeds from the right (rear) to the left (front).
[0016]
First, the object of leveling in the present invention is a special pavement material, for example, the above-described wood fiber F having the property of having high tackiness and low bulk specific gravity. As this special pavement material, in addition to wood fiber F, there are earth-based mixtures using resin binders such as emulsion and pavement materials mainly composed of rubber chips. In the following, wood fiber F is used on pavement surface H. An explanation will be given by taking an example of paving evenly.
[0017]
As shown in FIG. 1 and FIG. 2 (a), the device 1 is a device that spreads the wood fiber F supplied from the front while moving forward, and has good working efficiency. In order to achieve the objects of high flatness accuracy of the pavement surface and enabling excellent pavement, a primary screw 11, a secondary screw 12, and a tertiary screw 13 are provided in order from the front. The configuration related to the supply of the wood fiber F and the progress of the apparatus 1 will be described later.
[0018]
Specifically, as shown in FIG. 2 (b), the apparatus 1 includes a table-like frame 2, which includes left and right side plates 3, 3 at the lower end of the frame 2, and FIGS. 1 and 2 (b). As shown in FIG. 1, the screws 11, 12, 13 are provided between the side plates 3, 3.
Here, the left and right side plates 3 and 3 are arranged parallel to the traveling direction in a state of being spaced apart from each other in the lateral direction, and slide on the pavement surface H. Further, the spread width w of the wood fiber F is regulated (see FIG. 5D).
Further, each screw 11, 12, 13 is disposed at a right angle to the traveling direction with a predetermined interval between the pavement surface H in the vertical direction and is rotatable between the side plates 3, 3. The thickness t of the spread of the wood fiber F is regulated by this interval (see FIG. 5D). In addition, the space | interval of each screw 11,12,13 and the pavement surface H is not limited to the same like illustration, You may each differ.
[0019]
Here, as shown in FIG. 1, the primary screw 11 is rotated by a hydraulic motor 14 provided at an end portion in the longitudinal direction, and plays a role of spreading the wood fiber F supplied from the front in the lateral direction. It is.
Also, as shown in FIG. 1, the secondary screw 12 is rotated by a hydraulic motor 15 provided at an end portion in the longitudinal direction, and the surface of the wood fiber F spread in the lateral direction is averaged. The tertiary screw 13 plays a role of leveling and finishing the surface of the averaged wood fiber F flatly.
[0020]
By using the device 1 provided with these screws 11, 12, and 13, when laying and leveling the wood fiber F, it is possible to perform mechanical construction instead of manual construction, so that the work efficiency is good and the flatness of the pavement surface is high. Good and excellent pavement is possible, and the leveling width w and leveling thickness t can be kept constant, so that excellent pavement is possible.
[0021]
As shown in FIGS. 1 and 2B, each of the screws 11, 12, and 13 has a spiral shape that is symmetrical around the center line C in the longitudinal direction around the rotation shaft having the same diameter. It has a rotor blade. The diameters, pitches, and rotation directions of the respective rotor blades are preferably configured as shown in Table 1 when they are compared. That is, the primary screw 11 has a large diameter, a large pitch, and a normal rotation, the secondary screw 12 has a small diameter, a medium pitch, and a reverse rotation, and the tertiary screw 13 has a small diameter, a small pitch, and a normal rotation. If it exists, the effect mentioned later is produced effectively. In addition, the numerical value of the diameter of each rotary blade, a pitch, and a rotation direction is not limited to the Example shown in Table 1.
[0022]
[Table 1]

[0023]
Moreover, as another structure of each screw 11,12,13, there exists a variable length screw which can be expanded-contracted in the width direction of paving, For example, the following two embodiment can be considered.
As shown in FIGS. 6 and 7, the first embodiment of the variable length screw includes slide frames 2 a and 2 a that extend and contract along a guide rail 41 provided on the frame 2 in the frame 2, and the slide frame. 2a and 2a have interlocking side plates 3 and 3 in the lower part, and are variable length screws 11a that are divided into two vertically in the longitudinal direction between the side plates 3 and 3 and expand and contract along the guide rail 40. Is provided.
The slide frame 2a and the frame 2 are coupled by a cylinder 42, and as the cylinder 42 expands and contracts, the variable length screw 11a, the slide frames 2a and 2a, and the side plates 3 and 3 are interlocked as shown in FIG. Can expand and contract in the width direction of paving. This embodiment is the same for the other variable length screws 12a and 13a provided in the frame 2.
The variable length screws 11a, 12a and 13a are rotated by hydraulic motors 14 and 15 provided at the ends in the longitudinal direction, and are spirally shaped around the same diameter in the longitudinal direction and around the same rotational axis. Of rotating blades. The diameter, pitch, and rotation direction of these rotor blades are the same as those of the screws 11, 12, and 13 described above.
In view of increasing the strength against bending, the guide rail 40 and the guide rail 41 preferably have two sets of each variable length screw and each slide frame, as shown in FIG.
[0024]
In the device 1 including the variable length screws 11a, 12a, and 13a, the spread width w can be changed by extending and contracting the variable length screws 11a, 12a, and 13a and the slide frames 2a and 2a.
[0025]
As shown in FIGS. 8 and 9, the second embodiment of the variable length screw includes slide frames 2 b and 2 b that extend and contract along a guide rail 41 provided in the frame 2 in the frame 2, and the slide frame 2b and 2b are provided with interlocking side plates 3 and 3 at the lower part, and are divided into left and right parts between the side plates 3 and 3 with a frame center fixing part 43 as a boundary, and the left and right end parts are in the longitudinal direction. In contrast, a variable length screw 11b that is vertically divided and extends and contracts along the guide rail 40 is provided.
The slide frame 2b and the frame 2 are coupled by a cylinder 42, and the extension and contraction of the cylinder 42 causes the variable length screw 11b, the slide frames 2b and 2b, and the side plates 3 and 3 to interlock with each other as shown in FIG. Can expand and contract in the width direction of paving. This embodiment is the same for the other variable length screws 12b and 13b provided in the frame 2.
And each variable length screw 11b, 12b, 13b became independent by right and left by the screw fixing part 43 in the center of the longitudinal direction of the flame | frame 2 by the hydraulic motors 14 and 15 provided in the both ends of the longitudinal direction. Driving and rotating directions are possible. The shape of the rotor blades, the diameter of the rotor blades, and the pitch of each of the variable length screws 11b, 12b, and 13b are the same as those of the screws 11, 12, and 13 described above.
[0026]
In the apparatus 1 including the variable length screws 11b, 12b, and 13b, the spread width w can be changed by extending and contracting the variable length screws 11b, 12b, and 13b and the slide frames 2a and 2a. Furthermore, when surplus or shortage of special pavement material occurs on the pavement surface during leveling, the moving direction of special pavement material is adjusted by changing the rotation direction of each variable length screw 11b, 12b, 13b In addition, the extra pavement material can be replenished to the deficient portion with a short moving distance.
[0027]
Here, in the apparatus 1, as a structure regarding the supply of the wood fiber F and the progress of the apparatus 1, for example, the following three embodiments can be considered.
[0028]
First, as a first embodiment of the apparatus 1, as shown in FIGS. 1 and 2, an apparatus 1 of a type that advances by being pulled by a vehicle and receives the supply of wood fibers F conveyed from the vehicle can be considered.
This vehicle is, for example, a tractor portion 20 of an existing asphalt finisher from which a screed portion is removed. As shown in FIGS. 1 and 2A, the tractor portion 20 is provided at the front portion of the vehicle body, and is provided from the front portion to the rear portion of the vehicle body with a hopper 21 into which the wood fiber F is inserted. A bar feeder 22 for conveying F, a screw spreader (not shown) provided at the rear part of the vehicle body for rolling out the wood fiber F, an engine 23 provided at the center part of the vehicle body for supplying driving force to the wheels 25, A hydraulic power source (not shown) that supplies pressure oil to the driving device 24 that is provided at the rear of the vehicle body and controls the driving of the wheels 25 and the traveling direction of the vehicle body, the wheels 25 provided at the lower part of the vehicle body, and the hydraulic motors 14 and 15 ), And is connected to the device 1 via a connecting rod 26 protruding from the rear part of the vehicle body.
According to this embodiment, the wood fiber F thrown into the hopper 21 is conveyed to the rear of the vehicle body by the bar feeder 22, rolled out to the front of the device 1 by the screw spreader, and travels forward toward the device 1. Pass through and lay down backwards.
[0029]
Next, as a second embodiment of the device 1, as shown in FIGS. 3 and 4, there is a device 1 ′ of a type that proceeds by self-propelled and receives supply of wood fiber F that is lowered forward by a separate transport vehicle. Conceivable.
In this case, the device 1 'is a power device (not shown) for supplying driving force to the wheels 5 in addition to the frame 2, the side plates 3 and 3, the screws 11, 12, 13 and the hydraulic motors 14 and 15. And a driving device 4 that controls the driving of the wheels 5 and the traveling direction of the vehicle body, the wheels 5, and a hydraulic pressure source (not shown) that supplies hydraulic pressure to the hydraulic motors 14 and 15.
According to this embodiment, the wood fiber F lowered to the front of the device 1 ′ by the tire shovel 30 which is a separate transport vehicle passes through the device 1 ′ traveling forward and is directed rearward. Lay down.
[0030]
Further, as a third embodiment of the device 1, although not shown, a device of a type combined with a mobile mixer that manufactures wood fiber F by mixing wood chips, urethane resin, sand, and the like is conceivable.
The apparatus in this case may be of a type pulled by a mobile mixer, or may be a separate type from the mobile mixer.
[0031]
Finally, the operation of spreading the wood fiber F using the apparatus 1 will be described with reference to FIG. In the following description, the apparatus 1 having the configuration shown in Table 1 will be described as an example.
[0032]
(1) First, as shown in FIG.1 and FIG.2 (a), the wood fiber F is supplied on the pavement surface H in the front of the apparatus 1. FIG. Specifically, in the apparatus 1 shown in FIGS. 1 and 2, the wood fiber F is fed into the hopper 21, conveyed by the bar feeder 22, rolled out by the screw spreader, and supplied to the front of the apparatus 1. In the apparatus 1 ′ shown in FIG. 4, the tire 1 is lowered and supplied to the front of the apparatus 1 ′ by a tire shovel 30. The wood fiber F here swells like a mountain as shown in FIG.
[0033]
(2) Next, the apparatus 1 is advanced forward, and the wood fiber F supplied from the front is spread laterally by the primary screw 11. As shown in FIG. 5 (b), the wood fiber F here is spread widely on the outside, and the spread width w is regulated by the distance between the side plates 3 and 3, while being kept constant. Its surface is wavy.
[0034]
(3) Next, the apparatus 1 is further advanced toward the front, and the surface of the wood fiber F spread in the lateral direction is averaged by the secondary screw 12. The wood fiber F here is appropriately returned to the inside as shown in FIG. 5 (c), and the surface thereof exhibits some unevenness.
[0035]
(4) Next, the apparatus 1 is further advanced toward the front, and the surface of the flattened wood fiber F is flattened and finished with the tertiary screw 13. As shown in FIG. 5 (d), the wood fiber F here is appropriately flattened, and the spread thickness t is regulated by the distance between the tertiary screw 13 and the pavement surface H and kept constant. The surface is kept in good flatness accuracy.
[0036]
(5) Finally, by further advancing the device 1 forward, the flatness of the pavement surface is good at the back of the device 1, and the spread width w and spread thickness t are constant. A preserved wood fiber pavement is formed.
[0037]
In the above description, the apparatus 1 has been mainly described. However, the same applies to the apparatus 1 ′ as long as it does not contradict the purpose.
[0038]
【The invention's effect】
According to the special pavement material leveling device according to the present invention configured as described above, the pavement has good work efficiency without being limited by the construction width in leveling the special pavement material such as wood fiber. There is a remarkable effect that it is possible to achieve excellent pavement with good flatness of the surface and capable of keeping the leveling width and thickness constant.
[Brief description of the drawings]
FIG. 1 is a plan view showing a device according to a first embodiment of a device 1 of the present invention.
2A and 2B are diagrams showing an apparatus according to a first embodiment of the apparatus 1 of the present invention, in which FIG. 2A is a front view, and FIG. 2B is a right side view.
FIG. 3 is a plan view showing a device according to a second embodiment of the device 1 of the present invention.
4A and 4B are views showing a device according to a second embodiment of the device 1 of the present invention, in which FIG. 4A is a front view, and FIG. 4B is a right side view.
5A is a front view of the apparatus, FIG. 5B is a state immediately after the primary screw, FIG. 5C is a state immediately after the secondary screw, and FIG. It is sectional drawing.
6A and 6B are diagrams showing a first embodiment of the variable length screw of the present invention, in which FIG. 6A is a right side view when contracted, and FIG. 6B is a right side view when extended.
FIG. 7 is an AA sectional view showing a first embodiment of the variable length screw of the present invention.
8A and 8B are diagrams illustrating a second embodiment of the variable length screw of the present invention, in which FIG. 8A is a right side view when contracted and FIG. 8B is a right side view when extended.
FIG. 9 is a plan view showing the second embodiment of the variable length screw of the present invention when extended.
[Explanation of symbols]
1 Equipment (Special paving material leveling equipment)
1 'device (special pavement material leveling device)
2 Frame 3 Side plate 4 Driving device 5 Wheel 11 Primary screw 12 Secondary screw 13 Tertiary screw 11a Variable length primary screw 12a Variable length secondary screw 13a Variable length tertiary screw 11b Variable length primary screw 12b Variable length secondary screw 13b Variable length Tertiary screw 14 Hydraulic motor 15 Hydraulic motor 20 Tractor section 21 (of asphalt finisher) Hopper 22 Bar feeder 23 Engine 24 Driving device 25 Wheel 26 Connecting rod 30 Tire excavator 40 Guide rail 41 Guide rail 42 Cylinder 43 Screw fixing section C Center line F Wood fiber (special paving material)
H Pavement surface

Claims (6)

It is a device that spreads the special pavement material supplied from the front while moving forward, and in order from the front,
A primary screw that spreads a special pavement material supplied from the front in the lateral direction;
A secondary screw that averages the surface of the special pavement material spread in the lateral direction,
A tertiary screw that flattens and finishes the surface of the special pavement material that is averaged,
Equipped with a,
Each of the screws is vertically divided into two in the longitudinal direction so that it can be expanded and contracted in the width direction of the pavement. The special pavement material leveling device is provided with left and right side plates that are arranged in parallel with the traveling direction and slide on the pavement surface at a predetermined interval from each other.
Each of the screws is arranged at a right angle to the traveling direction with a predetermined gap between the pavement surface and is provided rotatably between the side plates.
The special pavement material leveling apparatus according to claim 1. Each of the screws can be driven independently on the left and right with a central line in the longitudinal direction as a boundary, and the rotation direction can be arbitrarily changed,
The special pavement material spread leveling device according to claim 1 or 2 . Each screw has a rotor blade having a symmetrical shape with respect to the center line in the longitudinal direction, and when comparing the diameter, pitch, and rotation direction of each rotor blade,
The primary screw has a large diameter, a large pitch, and a positive rotation;
The secondary screw has a small diameter, medium pitch, and reverse rotation;
The tertiary screw has a small diameter, a small pitch, and a forward rotation,
The special pavement material leveling device according to any one of claims 1 to 3 . The special pavement material leveling device is to be advanced by being pulled by a vehicle,
The special pavement material is conveyed and supplied from the vehicle,
The special pavement material spread leveling device according to any one of claims 1 to 4 . The above-mentioned special pavement material leveling device proceeds by self-running,
The special pavement material is supplied by being lowered by a separate transport vehicle forward,
The special pavement material spread leveling device according to any one of claims 1 to 4 .

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