JP2016169983A

JP2016169983A - Concrete drilled powder recovery device and concrete drilled powder recovery system

Info

Publication number: JP2016169983A
Application number: JP2015048658A
Authority: JP
Inventors: 宮永　昌明; Masaaki Miyanaga; 昌明宮永
Original assignee: Miyanaga KK
Current assignee: Miyanaga KK
Priority date: 2015-03-11
Filing date: 2015-03-11
Publication date: 2016-09-23
Anticipated expiration: 2035-03-11
Also published as: JP6182561B2

Abstract

PROBLEM TO BE SOLVED: To provide a concrete drilled powder recovery system capable of suitably sampling drilled powders by preventing mixing of impurities.SOLUTION: A concrete drilled powder recovery device 6 for recovering drilled powders of concrete drilled by using a hammer drill for holding a drill bit 3 having a dust suction passage 3e formed therein through the dust suction passage by the suction force of a suction device includes a base 12 having a flow passage formed therein, one end of the flow passage being connected to the dust suction passage and the other end being connected to the suction device to distribute the drilled powders, a storage base 15 connected to the midway of the flow passage, having a storage space 15c for storing the drilled powders distributed through the flow passage, and connected to the base, and a sliding member 13 slidably assembled to the base so as to traverse an upstream region and a downstream region respectively located on the upstream side and the downstream side of the storage case in the flow passage.SELECTED DRAWING: Figure 3

Description

本発明は、コンクリート削孔粉回収装置及びコンクリート削孔粉回収システムに関する。 The present invention relates to a concrete hole drilling powder collecting apparatus and a concrete hole drilling powder collecting system.

例えば、鉄筋コンクリート内の鉄筋の腐食判定をするために、コンクリートに含まれる塩分等の成分分析が行われる場合がある。特許文献１には、コンクリートをハンマードリルで削孔し、削孔粉をドリルビットの内部に形成した吸塵通路を介して吸引装置で吸引し、回収した削孔粉を分析試料として用いることにより、コンクリートの塩分量を測定する方法が開示されている。 For example, in order to determine the corrosion of the reinforcing bars in the reinforced concrete, component analysis such as salinity contained in the concrete may be performed. In Patent Document 1, concrete is drilled with a hammer drill, the drilling powder is sucked with a suction device through a dust suction passage formed inside the drill bit, and the collected drilling powder is used as an analysis sample. A method for measuring the salinity of concrete is disclosed.

特開２００５−３７１４６号公報JP 2005-37146 A

コンクリートの成分分析の精度を高めるためには、分析対象のコンクリートの削孔粉に、分析対象外のもの（例えば、分析対象外のコンクリートの削孔粉やその他全般の粉塵等を指す。以下、これらを「不純物」と称する。）が混合するのを防止し、削孔粉を適切に採取する必要がある。 In order to increase the accuracy of the component analysis of the concrete, the drilling powder of the concrete to be analyzed is not analyzed (for example, drilling powder of the non-analyzed concrete or other general dust. These are referred to as “impurities”) to prevent mixing and to properly collect the drilling powder.

そこで本発明は、ハンマードリルを用いたコンクリート削孔粉回収システムにおいて、簡易な構造で、コンクリートの削孔粉に不純物が混合するのを適切に防止し、削孔粉を適切に採取可能にすることを目的としている。 Accordingly, the present invention provides a concrete drilling powder recovery system using a hammer drill, which has a simple structure and appropriately prevents impurities from being mixed into the concrete drilling powder and makes it possible to appropriately collect drilling powder. The purpose is that.

上記課題を解決するために、本発明の一態様におけるコンクリート削孔粉回収装置は、内部に吸塵通路が形成されたドリルビットを保持するハンマードリルを用いて削孔したコンクリートの削孔粉を、前記吸塵通路を介して吸引装置の吸引力により回収するコンクリート削孔粉回収装置であって、一端が前記吸塵通路、他端が前記吸引装置にそれぞれ接続されて前記削孔粉が流通する流通路が形成されたベースと、前記流通路の途中に接続され、前記流通路を流通する前記削孔粉を貯留する貯留空間を有し、前記ベースに接続された貯留ケースと、前記流通路における前記貯留ケースよりも上流側にある上流側領域と下流側にある下流側領域とをそれぞれ横断するように、前記ベースにスライド可能に組み合わされるスライド部材と、を備え、前記スライド部材には、前記上流側領域と前記下流側領域とを前記貯留空間にそれぞれ接続させる一対の接続路と、前記上流側領域と前記下流側領域とを前記貯留空間を介さずに短絡させる短絡路とが形成され、前記スライド部材と前記ベースとを相対的にスライドさせることにより、前記上流側領域と前記下流側領域とが前記一対の前記接続路を介して前記貯留空間に接続され、前記上流側領域を流通した前記削孔粉が前記貯留空間に貯留されて前記貯留空間内の空気が前記下流側領域に排気される第１モードと、前記上流側領域と前記下流側領域とが前記短絡路を介して短絡され、前記上流側領域と前記下流側領域とに前記短絡路を介して空気が流通する第２モードとに切り替えられる。 In order to solve the above-mentioned problem, the concrete hole drilling powder recovery device according to one aspect of the present invention is a concrete hole drilling powder that is drilled using a hammer drill that holds a drill bit in which a dust suction passage is formed. A concrete hole drilling powder recovery device that recovers by suction force of a suction device through the dust suction passage, wherein one end is connected to the dust suction passage and the other end is connected to the suction device, and the flow passage through which the hole drilling powder flows. Formed in the middle of the flow path, a storage space for storing the drilling powder flowing through the flow path, a storage case connected to the base, and the flow path in the flow path A slide member that is slidably combined with the base so as to cross an upstream region on the upstream side of the storage case and a downstream region on the downstream side, respectively. The slide member short-circuits the upstream region and the downstream region without going through the storage space, and a pair of connection paths that connect the upstream region and the downstream region to the storage space, respectively. A short-circuit path is formed, and by relatively sliding the slide member and the base, the upstream area and the downstream area are connected to the storage space via the pair of connection paths, The first mode in which the drilling powder flowing through the upstream region is stored in the storage space and the air in the storage space is exhausted to the downstream region, and the upstream region and the downstream region include The short circuit is short-circuited through the short-circuit path, and the second mode in which air flows through the short-circuit path between the upstream region and the downstream region is switched.

上記構成によれば、第１モードにおいて、上流側領域と下流側領域とが一対の接続路を介して貯留空間に接続され、上流側領域を流通した削孔粉が貯留空間に貯留されて貯留空間内の空気が下流側領域に排気される。また、第２モードにおいて、上流側領域と下流側領域とが短絡路を介して短絡され、上流側領域と下流側領域とに短絡路を介して空気が流通し、流通路内の残留物が除去されて、流通路が清掃される。このように、第１モードと第２モードとの両方において、流通路を流通する空気の流通方向が、上流側領域から下流側領域に向かう同一方向に保たれる。従って、第１モードと第２モードとを繰り返し交互に行っても、例えば、流通路の下流側領域に付着していた不純物が貯留空間に混入しにくい。また、第１モードと第２モードとは、スライド部材とベースとを組み合わせた簡易な構造において、スライド部材とベースとを相対的にスライドさせることにより、簡単に切り替えることができる。よって、ハンマードリルを用いたコンクリート削孔粉回収システムにおいて、簡易な構造で、コンクリートの削孔粉に不純物が混合するのを適切に防止し、削孔粉を適切に採取できる。なお、本願で言う「コンクリート」とは、養生後に硬化したコンクリートを指す。 According to the above configuration, in the first mode, the upstream region and the downstream region are connected to the storage space via the pair of connection paths, and the drilling powder that has circulated through the upstream region is stored and stored in the storage space. Air in the space is exhausted to the downstream region. Further, in the second mode, the upstream region and the downstream region are short-circuited through a short circuit, air flows through the short circuit to the upstream region and the downstream region, and the residue in the flow path is It is removed and the flow path is cleaned. Thus, in both the first mode and the second mode, the flow direction of the air flowing through the flow path is maintained in the same direction from the upstream region to the downstream region. Therefore, even if the first mode and the second mode are repeatedly performed alternately, for example, impurities attached to the downstream region of the flow path are not easily mixed into the storage space. Further, the first mode and the second mode can be easily switched by relatively sliding the slide member and the base in a simple structure in which the slide member and the base are combined. Therefore, in the concrete drilling powder recovery system using a hammer drill, it is possible to appropriately prevent impurities from being mixed with the drilling powder of the concrete with a simple structure, and to appropriately collect the drilling powder. The term “concrete” as used in the present application refers to concrete that has hardened after curing.

また、前記スライド部材は、長尺状であり、前記ベースの内部には、前記流通路と、前記スライド部材が挿入される挿通路とが形成され、前記スライド部材の内部において、前記短絡路は、前記スライド部材の長手方向に延びて形成され、前記一対の接続路は、前記短絡路と交差する方向に延びて形成され、前記スライド部材と前記ベースとを前記挿通路の延びる方向に相対的にスライドさせることにより、前記第１モードと前記第２モードとが切り替えられるようにしてもよい。 The slide member has an elongated shape, and the flow path and an insertion path into which the slide member is inserted are formed inside the base, and the short circuit path is formed inside the slide member. The pair of connection paths are formed to extend in a direction intersecting the short-circuit path, and the slide member and the base are relative to each other in the direction in which the insertion path extends. The first mode and the second mode may be switched by sliding to the right.

上記構成によれば、長尺状のスライド部材と、ベースとを挿通路の延びる方向に相対的にスライドさせる簡単な操作で、第１モードと第２モードとを容易に切り替えることができる。従って、例えば、オペレータがコンクリートの削孔作業中であっても、片手でスライド部材を操作することにより、一人で容易かつ迅速に削孔粉を回収できる。 According to the above configuration, the first mode and the second mode can be easily switched by a simple operation of sliding the long slide member and the base relatively in the direction in which the insertion path extends. Therefore, for example, even when the operator is performing a concrete hole drilling operation, the hole drill powder can be easily and quickly collected by one person by operating the slide member with one hand.

また、前記スライド部材は、前記ベースから外部露出するように長手方向一端に設けられた操作部を有し、前記操作部を前記ベースに対して押し込みまたは引き出すことにより、前記第１モードと前記第２モードとが切り替えられるようにしてもよい。 The slide member has an operation portion provided at one end in a longitudinal direction so as to be exposed to the outside from the base, and the first mode and the first mode are obtained by pushing or pulling the operation portion with respect to the base. The two modes may be switched.

上記構成によれば、例えば、オペレータがドリルビットを用いてコンクリートを削孔しながら、操作部をベースに対して押し込みまたは引き出すことにより、第１モードと第２モードとを容易に切り替えることができる。 According to the above configuration, for example, the operator can easily switch between the first mode and the second mode by pushing or pulling out the operation unit with respect to the base while drilling concrete using a drill bit. .

また、前記スライド部材のその長手方向に垂直な断面の形状と、前記挿通路のその延びる方向に垂直な断面の形状とは、ともに同一の非真円形状であり、前記スライド部材が、前記挿通路に対して気密に挿入されていてもよい。 Further, the shape of the cross section perpendicular to the longitudinal direction of the slide member and the shape of the cross section perpendicular to the extending direction of the insertion passage are both the same non-circular shape, and the slide member is inserted into the insertion member. It may be inserted airtight with respect to the passage.

上記構成によれば、スライド部材の長手方向に垂直な断面の周方向において、スライド部材が挿通路の内部で回転するのが防止され、ベースの流通路に対する短絡路または一対の接続路の位置関係を安定して保つことができる。また、スライド部材が挿通路に対して気密に挿入されているので、スライド部材と挿通路との隙間から不純物が入り込み、貯留ケース内に貯留される削孔粉に混入するのを防止できる。 According to the above configuration, in the circumferential direction of the cross section perpendicular to the longitudinal direction of the slide member, the slide member is prevented from rotating inside the insertion path, and the positional relationship between the short circuit path or the pair of connection paths with respect to the flow path of the base Can be kept stable. In addition, since the slide member is inserted in an airtight manner with respect to the insertion passage, impurities can be prevented from entering through the gap between the slide member and the insertion passage and mixed into the drilling powder stored in the storage case.

また、前記ベースと前記貯留ケースとの間に配置されて前記ベースと前記貯留ケースとに接続され、前記流通路から前記貯留空間へ前記削孔粉を流通させる内部空間が形成された接続部材をさらに備え、前記接続部材は、前記内部空間の断面が前記ベースから前記貯留ケースに向かって小さくなる漏斗状に形成されていてもよい。 A connecting member disposed between the base and the storage case, connected to the base and the storage case, and formed with an internal space through which the drilling powder flows from the flow path to the storage space; In addition, the connection member may be formed in a funnel shape in which a cross section of the internal space decreases from the base toward the storage case.

上記構成によれば、ベースから接続部材に送られる削孔粉を貯留ケース内に効率よく貯留させることができる。 According to the said structure, the hole-drilling powder sent to a connection member from a base can be efficiently stored in a storage case.

また、前記ハンマードリルに取り付けられる取付部材をさらに備え、前記取付部材は、前記貯留ケースと前記ハンマードリルとの間に配置されて前記貯留ケースと前記ハンマードリルとに接続されるボールジョイント部を有してもよい。 The mounting member further includes an attachment member attached to the hammer drill, and the attachment member has a ball joint portion disposed between the storage case and the hammer drill and connected to the storage case and the hammer drill. May be.

上記構成によれば、取付部材のボールジョイント部によって、コンクリートの削孔方向とは無関係に、貯留ケースの底部を鉛直方向下方に配向できる。従って、削孔粉を安定して貯留ケース内に貯留できる。 According to the above configuration, the bottom portion of the storage case can be oriented downward in the vertical direction regardless of the drilling direction of the concrete by the ball joint portion of the mounting member. Therefore, the drilling powder can be stably stored in the storage case.

また、本発明の一態様に係るコンクリート削孔粉回収システムは、前記ドリルビットと、前記ハンマードリルと、上記したいずれかのコンクリート削孔粉回収装置とを備える。 Moreover, the concrete hole drilling powder collection | recovery system which concerns on 1 aspect of this invention is equipped with the said drill bit, the said hammer drill, and one of the above-mentioned concrete hole drilling powder collection | recovery apparatuses.

上記構成によれば、簡易な構造で、コンクリートの削孔粉に不純物が混合するのを適切に防止し、削孔粉を適切に採取可能なコンクリート削孔粉回収システムを実現できる。 According to the above configuration, it is possible to realize a concrete hole drilling powder recovery system that can appropriately prevent impurities from being mixed with the hole drilling powder of concrete with a simple structure and can appropriately collect the hole drilling powder.

本発明によれば、ハンマードリルを用いたコンクリート削孔粉回収システムにおいて、簡易な構造で、コンクリートの削孔粉に不純物が混合するのを適切に防止し、削孔粉を適切に採取できる。 According to the present invention, in a concrete drilling powder recovery system using a hammer drill, with a simple structure, it is possible to appropriately prevent impurities from being mixed with concrete drilling powder and to collect drilling powder appropriately.

実施形態に係るコンクリート削孔粉回収システムを上方から見た図である。It is the figure which looked at the concrete hole drilling powder collection system concerning an embodiment from the upper part. 実施形態に係るコンクリート削孔粉回収システムを後方から見た図である。It is the figure which looked at the concrete hole drilling powder collection system concerning an embodiment from back. ドリルビットとコンクリート削孔粉回収装置との断面図である。It is sectional drawing of a drill bit and a concrete hole drilling powder collection | recovery apparatus. 図３のIV−IV矢視断面図である。FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3. 図３のV−V矢視断面図である。It is a VV arrow sectional view of Drawing 3. 図３のVI−VI矢視断面図である。FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 3. 第１モード時におけるドリルビットとコンクリート削孔粉回収装置との様子を示す断面図である。It is sectional drawing which shows the mode of the drill bit at the time of 1st mode, and a concrete drilling hole powder | flour collection apparatus. 第２モード時におけるドリルビットとコンクリート削孔粉回収装置との様子を示す断面図である。It is sectional drawing which shows the mode of the drill bit at the time of 2nd mode, and a concrete hole drilling powder collection | recovery apparatus.

以下、本発明の実施形態について、各図を参照して説明する。 Embodiments of the present invention will be described below with reference to the drawings.

図１は、実施形態に係るコンクリート削孔粉回収システム１を上方から見た図である。図２は、実施形態に係るコンクリート削孔粉回収システム１を後方から見た図である。図１及び２に示すように、コンクリート削孔粉回収システム１（以下、単にシステム１ともいう。）は、ピストルグリップ型のハンマードリル（振動型電動ドリル装置）２、ハンマードリル２のチャック部２ａに保持され、かつ内部に吸塵通路３ｅが形成されたドリルビット３、及び、ドリルビット３に取着されたアダプタ４を備える。また、システム１は、ドリルビット３の長手方向と交差する方向に延びてハンマードリル２に固定された長尺状の固定具５、固定具５の長手方向一端５ａに取着されたコンクリート削孔粉回収装置６（以下、単に回収装置６ともいう。）、及び、固定具５の長手方向他端５ｂに取着されたハンドル７を備える。また、システム１は、ドリルビット３の長手方向に延びて固定具５に固定され、コンクリートの表面と当接してドリルビット３の削孔深さを規定するスタンド８、コンクリートの削孔時に発生する削孔粉をドリルビット３の吸塵通路３ｅを介して吸引する吸引装置（吸塵装置）９、及び、アダプタ４と回収装置６との間と、回収装置６と吸引装置９との間とをそれぞれ接続する接続ホース１０Ａ、１０Ｂを備える。 Drawing 1 is a figure which looked at concrete hole drilling powder recovery system 1 concerning an embodiment from the upper part. Drawing 2 is a figure which looked at concrete hole drilling powder recovery system 1 concerning an embodiment from back. As shown in FIGS. 1 and 2, a concrete drilling powder recovery system 1 (hereinafter also simply referred to as system 1) includes a pistol grip type hammer drill (vibration type electric drill device) 2 and a chuck portion 2 a of the hammer drill 2. And a drill bit 3 having a dust suction passage 3e formed therein, and an adapter 4 attached to the drill bit 3. The system 1 also includes a long fixture 5 that extends in a direction intersecting the longitudinal direction of the drill bit 3 and is fixed to the hammer drill 2, and a concrete drilling hole attached to one longitudinal end 5 a of the fixture 5. A powder recovery device 6 (hereinafter, also simply referred to as a recovery device 6) and a handle 7 attached to the other longitudinal end 5b of the fixture 5 are provided. Further, the system 1 extends in the longitudinal direction of the drill bit 3 and is fixed to the fixture 5, and a stand 8 that abuts against the surface of the concrete to define the drilling depth of the drill bit 3, which occurs when drilling concrete. A suction device (dust suction device) 9 that sucks the drilling powder through the dust suction passage 3e of the drill bit 3, and between the adapter 4 and the recovery device 6, and between the recovery device 6 and the suction device 9, respectively. Connection hose 10A, 10B to connect is provided.

図３は、ドリルビット３と回収装置６との断面図である。図３では便宜上、回収装置６及び接続ホース１０Ａ、１０Ｂをドリルビット３に対して大きく図示し、回収装置６のボールジョイント部２０を省略している（後述する図７及び８も同様に図示する）。また、図３では、第１モード時の回収装置６を図示している。ドリルビット３は、長手方向Ｘに延び、かつ円形の径方向断面を有する長尺状の軸体であって、長手方向一端に設けられてコンクリートの削孔に挿入されるシャフト先端部３ａ、シャフト先端部３ａからハンマードリル２側に延びるシャフト主部３ｂ、及び、シャフト主部３ｂからハンマードリル２側に延びる延設部３ｃを有する。シャフト先端部３ａには、ドリルビット３の軸周りに並設され、かつコンクリートを削孔する複数の切刃部３ｄが形成されている。ドリルビット３の長手方向他端側における延設部３ｃの位置には、ハンマードリル２のチャック部２ａに保持されるシャンク部（不図示）が形成されている。シャフト主部３ｂは、シャフト先端部３ａよりも太い外径を有する。シャフト主部３ｂの外表面は平滑であり、シャフト主部３ｂの外径は、長手方向Ｘで離隔する複数の位置で互いに異なっている。吸塵通路３ｅは、シャフト先端部３ａとシャフト主部３ｂとの各内部にわたって長手方向Ｘに延びている。各切刃部３ｄの間には、吸塵通路３ｅと連通する連通孔３ｆが形成されている。シャフト主部３ｂは、内部に吸塵通路３ｅの長手方向一端からドリルビット３を径方向に貫通して延びる一対の連通路３ｇを有する。シャフト主部３ｂの外表面には、一対の連通路３ｇの各々と連通する開口３ｈが形成されている。 FIG. 3 is a cross-sectional view of the drill bit 3 and the recovery device 6. In FIG. 3, for convenience, the recovery device 6 and the connecting hoses 10A and 10B are greatly illustrated with respect to the drill bit 3, and the ball joint portion 20 of the recovery device 6 is omitted (FIGS. 7 and 8 to be described later are also illustrated). ). FIG. 3 shows the collection device 6 in the first mode. The drill bit 3 is a long shaft body extending in the longitudinal direction X and having a circular radial cross section. The drill bit 3 is provided at one end in the longitudinal direction and inserted into a concrete drilling hole. It has a shaft main portion 3b extending from the tip 3a to the hammer drill 2 side, and an extending portion 3c extending from the shaft main portion 3b to the hammer drill 2 side. The shaft tip portion 3a is formed with a plurality of cutting blade portions 3d arranged in parallel around the axis of the drill bit 3 and drilling concrete. A shank portion (not shown) that is held by the chuck portion 2 a of the hammer drill 2 is formed at the position of the extending portion 3 c on the other end side in the longitudinal direction of the drill bit 3. The shaft main portion 3b has a thicker outer diameter than the shaft tip portion 3a. The outer surface of the shaft main portion 3b is smooth, and the outer diameter of the shaft main portion 3b is different from each other at a plurality of positions separated in the longitudinal direction X. The dust suction passage 3e extends in the longitudinal direction X over the interiors of the shaft tip portion 3a and the shaft main portion 3b. A communication hole 3f communicating with the dust suction passage 3e is formed between the cutting blade portions 3d. The shaft main portion 3b has a pair of communication passages 3g extending through the drill bit 3 in the radial direction from one end in the longitudinal direction of the dust suction passage 3e. An opening 3h communicating with each of the pair of communication paths 3g is formed on the outer surface of the shaft main portion 3b.

図３に示すように、アダプタ４は、ドリルビット３を回転可能に、シャフト主部３ｂにおいてドリルビット３を軸支する。アダプタ４は、シャフト主部３ｂを周方向から覆ってドリルビット３を軸支するアダプタ本体部４ａと、アダプタ本体部４ａから長手方向Ｘと交差する方向に延びるアダプタ延設部４ｂとを有する。アダプタ本体部４ａは、その内表面とドリルビット３の開口３ｈとの間に形成された第１通路４ｃを有する。アダプタ延設部４ｂは、その内部を貫通して第１通路４ｃと連通するように形成された第２通路４ｄを有する。第２通路４ｄの一端に形成された開口４ｅには、接続ホース１０Ａの一端とアダプタ４とを接続するためのソケット１１が接続される。アダプタ４は、一例として一対の樹脂部材からなり、この一対の樹脂部材でシャフト主部３ｂを周方向から挟むように組み合わせて構成される。 As shown in FIG. 3, the adapter 4 pivotally supports the drill bit 3 in the shaft main portion 3 b so that the drill bit 3 can rotate. The adapter 4 includes an adapter main body portion 4a that covers the shaft main portion 3b from the circumferential direction and pivotally supports the drill bit 3, and an adapter extension portion 4b that extends from the adapter main body portion 4a in a direction intersecting the longitudinal direction X. The adapter body 4a has a first passage 4c formed between the inner surface thereof and the opening 3h of the drill bit 3. The adapter extending portion 4b has a second passage 4d formed so as to penetrate the inside and communicate with the first passage 4c. A socket 11 for connecting one end of the connection hose 10A and the adapter 4 is connected to the opening 4e formed at one end of the second passage 4d. The adapter 4 includes a pair of resin members as an example, and is configured by combining the pair of resin members so that the shaft main portion 3b is sandwiched from the circumferential direction.

回収装置６は、ドリルビット３により削孔されたコンクリートの削孔粉を回収する。回収装置６は、削孔粉の流通路Ｒが形成されたベース１２、ベース１２にスライド可能に組み合わされるスライド部材１３、ベース１２に接続される接続部材１４、削孔粉を貯留する貯留空間１５ｃを有し、かつ接続部材１４に接続される貯留ケース１５、及び、固定具５を介して回収装置６をハンマードリル２に取り付けるための取付部材１６を有する。以下では便宜上、ベース１２の開口１２ａ１、１２ｂ１が設けられた面側を上方向、ベース１２の開口１２ａ２、１２ｂ２が設けられた面側を下方向とする。 The collection device 6 collects the concrete drilling powder drilled by the drill bit 3. The recovery device 6 includes a base 12 in which a flow path R for drilling powder is formed, a slide member 13 slidably combined with the base 12, a connecting member 14 connected to the base 12, and a storage space 15c for storing drilling powder. And a storage case 15 connected to the connection member 14, and an attachment member 16 for attaching the recovery device 6 to the hammer drill 2 via the fixture 5. Hereinafter, for the sake of convenience, the surface side of the base 12 where the openings 12a1 and 12b1 are provided is referred to as the upward direction, and the surface side of the base 12 where the openings 12a2 and 12b2 are provided is referred to as the downward direction.

図４は、図３のIV−IV矢視断面図である。図３及び４に示すように、ベース１２は、一例として、外径寸法に比べて高さ寸法が小さい円柱状に形成される。流通路Ｒは、ベース１２の内部に形成されている。流通路Ｒは、ベース１２を上下に貫通するように形成された第１流通路１２ａ及び第２流通路１２ｂを含む。第１流通路１２ａは、流通路Ｒにおける貯留ケース１５よりも上流側にある上流側領域に相当し、第２流通路１２ｂは、下流側にある下流側領域に相当する。ベース１２は、第１流通路１２ａ及び第２流通路１２ｂの各途中を横断し、かつ径方向を貫通するように延びて形成された挿通路１２ｃをさらに有する。図４に示すように、一例として、第１流通路１２ａ及び第２流通路１２ｂの各流路断面は円形である。また、挿通路１２ｃの流路断面は矩形である（図５参照）。 4 is a cross-sectional view taken along the line IV-IV in FIG. As shown in FIGS. 3 and 4, as an example, the base 12 is formed in a columnar shape having a smaller height dimension than the outer diameter dimension. The flow path R is formed inside the base 12. The flow path R includes a first flow path 12a and a second flow path 12b formed so as to penetrate the base 12 up and down. The first flow passage 12a corresponds to an upstream region on the upstream side of the storage case 15 in the flow passage R, and the second flow passage 12b corresponds to a downstream region on the downstream side. The base 12 further includes an insertion passage 12c formed so as to cross the middle of each of the first flow passage 12a and the second flow passage 12b and to extend through the radial direction. As shown in FIG. 4, as an example, each flow path cross section of the 1st flow path 12a and the 2nd flow path 12b is circular. Moreover, the flow path cross section of the insertion path 12c is a rectangle (refer FIG. 5).

図３に示すように、ベース１２の上方の面には、第１流通路１２ａの開口１２ａ１と第２流通路１２ｂの開口１２ｂ１とが形成されている。開口１２ａ１には、接続ホース１０Ａの他端が接続され、開口１２ｂ１には、接続ホース１０Ｂの一端が接続される（図１参照）。これにより流通路Ｒの一端は、接続ホース１０Ａを介してドリルビット３の吸塵通路３ｅに接続され、流通路Ｒの他端は、接続ホース１０Ｂを介して吸引装置９に接続される。接続ホース１０Ａの他端は、開口１２ａ１から下方に向かって一定の深さまで第１流通路１２ａに差し込まれ、第１流通路１２ａの内周面に対して気密に接している。接続ホース１０Ａの流路と第１流通路１２ａとは、滑らかに接続される。同様に、接続ホース１０Ｂの一端も、開口１２ｂ１から下方に向かって一定の深さまで第２流通路１２ｂに差し込まれ、第２流通路１２ｂの内周面に対して気密に接している。接続ホース１０Ｂの流路と第２流通路１２ｂとは、滑らかに接続される。 As shown in FIG. 3, an opening 12a1 of the first flow passage 12a and an opening 12b1 of the second flow passage 12b are formed on the upper surface of the base 12. The other end of the connection hose 10A is connected to the opening 12a1, and one end of the connection hose 10B is connected to the opening 12b1 (see FIG. 1). Thereby, one end of the flow path R is connected to the dust suction path 3e of the drill bit 3 via the connection hose 10A, and the other end of the flow path R is connected to the suction device 9 via the connection hose 10B. The other end of the connection hose 10A is inserted into the first flow passage 12a from the opening 12a1 downward to a certain depth, and is in airtight contact with the inner peripheral surface of the first flow passage 12a. The flow path of the connection hose 10A and the first flow passage 12a are smoothly connected. Similarly, one end of the connection hose 10B is also inserted downward into the second flow passage 12b from the opening 12b1 to a certain depth and is in airtight contact with the inner peripheral surface of the second flow passage 12b. The flow path of the connection hose 10B and the second flow passage 12b are smoothly connected.

ベース１２の下部には、下方に突出して接続部材１４のネジ部１４ａ２と螺合するネジ部１２ｄが形成される。ネジ部１２ｄで囲まれた下面領域１２ｅは、接続部材１４の内部空間１４ｄに面している。下面領域１２ｅにおけるベース１２の下方の面には、第１流通路１２ａの開口１２ａ２と第２流通路１２ｂの開口１２ｂ２とが形成されている。開口１２ａ２には、内部空間１４ｄでの削孔粉の流通方向が接続部材１４の内表面に沿った方向となるように、接続部材１４の内表面に沿って屈曲した曲管状のガイド部材１７が接続される。ガイド部材１７は、上下方向及び接続部材１４の内周方向のそれぞれと交差する方向に延びている。ガイド部材１７は、開口１２ａ２から上方に向かって一定の深さまで第１流通路１２ａに差し込まれ、第１流通路１２ａの内周面に対して気密に接している。ガイド部材１７の流路と第１流通路１２ａとは、滑らかに接続される。第２流通路１２ｂの開口１２ｂ２の中心位置は、接続部材１４の筒軸を通る線上に位置している。第１流通路１２ａ及び第２流通路１２ｂは、接続部材１４の内部空間１４ｄを介して貯留ケース１５の貯留空間１５ｃと接続されている。 A screw portion 12 d that protrudes downward and is screwed with the screw portion 14 a 2 of the connection member 14 is formed at the lower portion of the base 12. A lower surface region 12e surrounded by the screw portion 12d faces the internal space 14d of the connection member 14. An opening 12a2 of the first flow passage 12a and an opening 12b2 of the second flow passage 12b are formed on a lower surface of the base 12 in the lower surface region 12e. A curved tubular guide member 17 bent along the inner surface of the connecting member 14 is formed in the opening 12a2 so that the flow direction of the drilling powder in the inner space 14d is along the inner surface of the connecting member 14. Connected. The guide member 17 extends in a direction intersecting with the vertical direction and the inner circumferential direction of the connection member 14. The guide member 17 is inserted into the first flow passage 12a from the opening 12a2 to a certain depth upward, and is in airtight contact with the inner peripheral surface of the first flow passage 12a. The flow path of the guide member 17 and the first flow passage 12a are smoothly connected. The center position of the opening 12b2 of the second flow passage 12b is located on a line passing through the cylindrical axis of the connecting member 14. The first flow passage 12 a and the second flow passage 12 b are connected to the storage space 15 c of the storage case 15 via the internal space 14 d of the connection member 14.

図３に示すように、スライド部材１３は、ベース１２の外径寸法よりも長く延びる軸部１３ａと、軸部１３ａの長手方向一端に設けられた操作部１３ｂとを有する。軸部１３ａは、第１流通路１２ａ及び第２流通路１２ｂを横断するように、ベース１２の外周から挿通路１２ｃにスライド可能に差し込まれている。これによりスライド部材１３は、貯留ケース１５の貯留空間１５ｃを挟んで流通路Ｒの上流側領域と下流側領域とをそれぞれ横断し、スライド部材１３とベース１２とが相対的にスライド可能となる。軸部１３ａの長手方向他端には、軸部１３ａの長手方向における他の部分よりも大きい断面積を有するストッパー部１３ａ１が形成される。ストッパー部１３ａ１は、挿通路１２ｃの外部に露出し、かつ挿通路１２ｃの開口周縁から外部に突出している。オペレータが操作部１３ｂを摘まんでスライド部材１３を挿通路１２ｃから一定量引き出すことにより、ストッパー部１３ａ１は、挿通路１２ｃの開口周縁のベース１２の外周面と当接し、それ以上のスライド部材１３の引き出し方向への移動が規制される。操作部１３ｂは、軸部１３ａの長手方向における全ての部分よりも大きい断面積を有して形成され、ベース１２の外周面から外部露出している。オペレータが操作部１３ｂを摘まんでスライド部材を挿通路１２ｃに一定量押し込むことにより、操作部１３ｂは、挿通路１２ｃの開口周縁のベース１２の外周面と当接し、それ以上のスライド部材１３の押し込み方向への移動が規制される。 As shown in FIG. 3, the slide member 13 includes a shaft portion 13a that extends longer than the outer diameter of the base 12, and an operation portion 13b that is provided at one end in the longitudinal direction of the shaft portion 13a. The shaft portion 13a is slidably inserted from the outer periphery of the base 12 into the insertion passage 12c so as to cross the first flow passage 12a and the second flow passage 12b. As a result, the slide member 13 crosses the upstream region and the downstream region of the flow path R across the storage space 15c of the storage case 15, and the slide member 13 and the base 12 can slide relative to each other. At the other end in the longitudinal direction of the shaft portion 13a, a stopper portion 13a1 having a larger cross-sectional area than other portions in the longitudinal direction of the shaft portion 13a is formed. The stopper portion 13a1 is exposed to the outside of the insertion path 12c and protrudes to the outside from the opening peripheral edge of the insertion path 12c. When the operator picks up the operating portion 13b and pulls out the slide member 13 from the insertion passage 12c by a certain amount, the stopper portion 13a1 comes into contact with the outer peripheral surface of the base 12 at the peripheral edge of the opening of the insertion passage 12c. Movement in the pull-out direction is restricted. The operation portion 13b is formed to have a larger cross-sectional area than all the portions in the longitudinal direction of the shaft portion 13a, and is exposed to the outside from the outer peripheral surface of the base 12. When the operator picks up the operation portion 13b and pushes the slide member into the insertion passage 12c by a certain amount, the operation portion 13b comes into contact with the outer peripheral surface of the base 12 at the periphery of the opening of the insertion passage 12c, and the slide member 13 is pushed further. Movement in the direction is restricted.

図３に示すように、スライド部材１３は、第１流通路１２ａ及び第２流通路１２ｂを貯留ケース１５の貯留空間１５ｃを介さずに短絡させる短絡路１３ｃと、第１流通路１２ａ及び第２流通路１２ｂを貯留ケース１５の貯留空間１５ｃにそれぞれ接続する一対の接続路１３ｄ、１３ｅとを内部に有する。短絡路１３ｃは、軸部１３ａの上部で上方に開放され、かつ軸部１３ａの下面に達しない深さで、軸部１３ａの長手方向に一定の長さで延びている。軸部１３ａの長手方向における短絡路１３ｃの長さは、ベース１２の径方向における第１流通路１２ａ及び第２流通路１２ｂの間隔に相当する長さよりも長い。一例として、短絡路１３ｃの長さは、第１流通路１２ａ及び第２流通路１２ｂの各流路断面をそれぞれ完全に横断する長さに設定されている。接続路１３ｄは、短絡路１３ｃの延びる方向と直交して、軸部１３ａを上下に貫通し、かつ接続路１３ｄと連通している。接続路１３ｅは、軸部１３ａの長手方向で短絡路１３ｃと離隔する位置において、接続路１３ｄと平行に、軸部１３ａを上下に貫通している。軸部１３ａの長手方向における一対の接続路１３ｄ、１３ｅの間隔は、ベース１２の径方向における第１流通路１２ａ及び第２流通路１２ｂの間隔と一致する。 As shown in FIG. 3, the slide member 13 includes a short-circuit path 13 c that short-circuits the first flow path 12 a and the second flow path 12 b without passing through the storage space 15 c of the storage case 15, and the first flow path 12 a and the second flow path 12 b. A pair of connection paths 13d and 13e are provided inside to connect the flow passage 12b to the storage space 15c of the storage case 15, respectively. The short-circuit 13c is opened upward at the upper portion of the shaft portion 13a and extends at a certain length in the longitudinal direction of the shaft portion 13a at a depth that does not reach the lower surface of the shaft portion 13a. The length of the short-circuit path 13c in the longitudinal direction of the shaft portion 13a is longer than the length corresponding to the interval between the first flow path 12a and the second flow path 12b in the radial direction of the base 12. As an example, the length of the short-circuit path 13c is set to a length that completely crosses each cross-section of each of the first flow path 12a and the second flow path 12b. The connection path 13d is orthogonal to the direction in which the short circuit path 13c extends, penetrates the shaft portion 13a up and down, and communicates with the connection path 13d. The connection path 13e penetrates the shaft part 13a up and down in parallel with the connection path 13d at a position separated from the short circuit path 13c in the longitudinal direction of the shaft part 13a. The distance between the pair of connection paths 13d and 13e in the longitudinal direction of the shaft portion 13a matches the distance between the first flow path 12a and the second flow path 12b in the radial direction of the base 12.

ベース１２の外周面にストッパー部１３ａ１が当接する位置まで、スライド部材１３を挿通路１２ｃの延びる方向に沿ってベース１２から引き出すと、接続路１３ｄが第１流通路１２ａと接続され、かつ接続路１３ｅが第２流通路１２ｂと接続される。このとき、第１流通路１２ａ及び第２流通路１２ｂは、一対の接続路１３ｄ、１３ｅを介して接続部材１４の内部空間１４ｄと連通する。このときの回収装置６の状態を、第１モードと称する。また、ベース１２の外周面に操作部１３ｂが当接する位置まで、スライド部材１３を挿通路１２ｃの延びる方向に沿ってベース１２に押し込むと、短絡路１３ｃは、第１流通路１２ａ及び第２流通路１２ｂと接続される（図８参照）。このとき、第１流通路１２ａ及び第２流通路１２ｂは、短絡路１３ｃを介して短絡されるとともに、接続部材１４の内部空間１４ｄと遮断される。このときの回収装置６の状態を、第２モードと称する。このように回収装置６では、スライド部材１３が流路切替部として機能し、オペレータが操作部１３ｂをベース１２から引き出せば第１モードとなり、オペレータが操作部１３ｂをベース１２に押し込めば第２モードとなる。オペレータが操作部１３ｂを摘まんでスライド部材１３を操作することで、第１モード及び第２モードは、相互に切り替えられる。 When the slide member 13 is pulled out from the base 12 along the direction in which the insertion path 12c extends to a position where the stopper portion 13a1 contacts the outer peripheral surface of the base 12, the connection path 13d is connected to the first flow path 12a, and the connection path 13e is connected to the second flow passage 12b. At this time, the first flow passage 12a and the second flow passage 12b communicate with the internal space 14d of the connection member 14 via the pair of connection passages 13d and 13e. The state of the collection device 6 at this time is referred to as a first mode. Further, when the slide member 13 is pushed into the base 12 along the direction in which the insertion passage 12c extends to a position where the operation portion 13b comes into contact with the outer peripheral surface of the base 12, the short circuit 13c becomes the first flow passage 12a and the second flow passage. It connects with the path | route 12b (refer FIG. 8). At this time, the first flow passage 12a and the second flow passage 12b are short-circuited via the short-circuit path 13c and are blocked from the internal space 14d of the connection member 14. The state of the collection device 6 at this time is referred to as a second mode. As described above, in the collection device 6, the slide member 13 functions as a flow path switching unit. When the operator pulls the operation unit 13b from the base 12, the first mode is set. When the operator pushes the operation unit 13b into the base 12, the second mode is set. It becomes. The first mode and the second mode are switched between each other when the operator operates the slide member 13 by grasping the operation unit 13b.

なお、操作部１３ｂは、スライド部材１３の長手方向両端に設けてもよい。この場合、第２モードに切り替える際に一方の操作部１３ｂを操作すると、他方の操作部１３ｂがストッパー部として機能する。 The operation unit 13b may be provided at both ends of the slide member 13 in the longitudinal direction. In this case, when one operation unit 13b is operated when switching to the second mode, the other operation unit 13b functions as a stopper unit.

図５は、図３のV−V矢視断面図である。図６は、図３のVI−VI矢視断面図である。図５及び６に示すように、スライド部材１３のその長手方向に垂直な断面の形状と、挿通路１２ｃのその延びる方向に垂直な断面の形状とは、ともに同一の非真円形状に設定されている。具体的には、軸部１３ａのその長手方向に垂直な断面の形状と、挿通路１２ｃのその延びる方向に垂直な断面の形状とが、ともに同一の矩形の断面形状に設定されている。また、第１流通路１２ａ、第２流通路１２ｂ、及び、一対の接続路１３ｄ、１３ｅの各流路断面は、形状が同一でサイズも同一である。また、スライド部材１３の長手方向から見て、ベース１２の径方向における第１流通路１２ａ、第２流通路１２ｂ、及び、一対の接続路１３ｄ、１３ｅの各幅と、短絡路１３ｃの幅とは同一である。これにより第１モードでは、第１流通路１２ａが短絡路１３ｃ及び接続路１３ｄと滑らかに接続され、第２流通路１２ｂが接続路１３ｅと滑らかに接続される。また、第２モードでは、第１流通路１２ａ及び第２流通路１２ｂが短絡路１３ｃと滑らかに接続される。軸部１３ａは、挿通路１２ｃに対して気密に挿入されている。従って、例えば、第１モード中に回収装置６外の不純物が貯留ケース１５の貯留空間１５ｃに混入したり、第２モード中に第１流通路１２ａ、短絡路１３ｃ及び第２流通路１２ｂを流通する削孔粉が貯留ケース１５の貯留空間１５ｃに混入するおそれは小さい。 5 is a cross-sectional view taken along the line V-V in FIG. 3. 6 is a cross-sectional view taken along the line VI-VI in FIG. As shown in FIGS. 5 and 6, the cross-sectional shape perpendicular to the longitudinal direction of the slide member 13 and the cross-sectional shape perpendicular to the extending direction of the insertion passage 12c are both set to the same non-circular shape. ing. Specifically, the cross-sectional shape perpendicular to the longitudinal direction of the shaft portion 13a and the cross-sectional shape perpendicular to the extending direction of the insertion passage 12c are both set to the same rectangular cross-sectional shape. Further, the cross sections of the first flow passage 12a, the second flow passage 12b, and the pair of connection passages 13d and 13e have the same shape and the same size. Further, as viewed from the longitudinal direction of the slide member 13, the widths of the first flow passage 12a, the second flow passage 12b, and the pair of connection paths 13d and 13e in the radial direction of the base 12, and the width of the short-circuit path 13c Are the same. Thus, in the first mode, the first flow passage 12a is smoothly connected to the short-circuit path 13c and the connection path 13d, and the second flow path 12b is smoothly connected to the connection path 13e. In the second mode, the first flow path 12a and the second flow path 12b are smoothly connected to the short circuit 13c. The shaft portion 13a is inserted in an airtight manner with respect to the insertion passage 12c. Therefore, for example, impurities outside the recovery device 6 are mixed into the storage space 15c of the storage case 15 during the first mode, or flow through the first flow path 12a, the short circuit path 13c, and the second flow path 12b during the second mode. There is a small possibility that the drilling powder to be mixed into the storage space 15 c of the storage case 15.

図３に示すように、接続部材１４は、ベース１２と貯留ケース１５との間に配置され、ベース１２と貯留ケース１５とに接続される。接続部材１４は、上下方向を筒軸方向とし、内部に削孔粉の内部空間１４ｄが形成された筒体であり、上端１４ａでベース１２と接続され、下端１４ｂで貯留ケース１５と接続される。上端１４ａに形成された開口１４ａ１の周縁には、ベース１２のネジ部１２ｄと螺合するネジ部１４ａ２が形成され、ネジ部１２ｄ、１４ａ２が螺合することで、接続部材１４の内部空間１４ｄと第１流通路１２ａ及び第２流通路１２ｂとが気密に接続される。接続部材１４は、内部空間１４ｄを介して、第１流通路１２ａから貯留空間１５ｃに削孔粉を流通させる。内部空間１４ｄは、接続部材１４の筒軸方向に垂直な断面が円形であり、かつ前記断面がベース１２から貯留ケース１５に向かって減少している。これにより、接続部材１４は、全体として漏斗状に形成されている。内部空間１４ｄには、接続部材１４の内表面に沿って、ベース１２から延びるガイド部材１７の下端が位置している。 As shown in FIG. 3, the connection member 14 is disposed between the base 12 and the storage case 15 and connected to the base 12 and the storage case 15. The connecting member 14 is a cylindrical body in which the vertical direction is the cylinder axis direction, and an internal space 14d of drilling powder is formed therein, and is connected to the base 12 at the upper end 14a and connected to the storage case 15 at the lower end 14b. . A screw portion 14a2 that is screwed with the screw portion 12d of the base 12 is formed at the periphery of the opening 14a1 formed in the upper end 14a, and the screw portions 12d and 14a2 are screwed together with the internal space 14d of the connection member 14. The first flow path 12a and the second flow path 12b are hermetically connected. The connecting member 14 distributes the drilling powder from the first flow passage 12a to the storage space 15c through the internal space 14d. The internal space 14 d has a circular cross section perpendicular to the cylinder axis direction of the connecting member 14, and the cross section decreases from the base 12 toward the storage case 15. Thereby, the connection member 14 is formed in the funnel shape as a whole. The lower end of the guide member 17 extending from the base 12 is located along the inner surface of the connection member 14 in the internal space 14d.

システム１の駆動時には、吸引装置９の吸引力によって、ベース１２からガイド部材１７を介して接続部材１４に送られた削孔粉が、接続部材１４の内表面に沿って螺旋状に回転しながら貯留空間１５ｃに貯留される。このように接続部材１４は、回収装置６において、削孔粉を貯留空間１５ｃに貯留するためのサイクロン部として機能する。下端１４ｂに形成された開口１４ｂ１の周縁には、上下方向に垂直な板面を有する円板部１４ｃが設けられている。円板部１４ｃの外周には、貯留ケース１５のネジ部１５ａ２と螺合するネジ部１４ｃ１が形成されている。 When the system 1 is driven, the drilling powder sent from the base 12 to the connection member 14 via the guide member 17 is rotated spirally along the inner surface of the connection member 14 by the suction force of the suction device 9. It is stored in the storage space 15c. Thus, the connection member 14 functions as a cyclone part for storing the drilling powder in the storage space 15 c in the recovery device 6. A disc portion 14c having a plate surface perpendicular to the vertical direction is provided at the periphery of the opening 14b1 formed in the lower end 14b. A screw portion 14c1 that is screwed with the screw portion 15a2 of the storage case 15 is formed on the outer periphery of the disc portion 14c.

貯留ケース１５は、上方に解放された開口１５ａ１を有し、かつ内部に貯留空間１５ｃを有する有底円筒状のケース本体部１５ａと、ケース本体部１５ａの開口１５ａ１を閉塞する蓋部１５ｂとを有する。ケース本体部１５ａと蓋部１５ｂとは、一例として、樹脂材料からなる射出成形品であり、一体的に成形されている。開口１５ａ１の周縁には、接続部材１４のネジ部１４ｃ１と螺合するネジ部１５ａ２が形成され、ネジ部１４ｃ１、１５ａ２が螺合することで、ケース本体部１５ａの貯留空間１５ｃと接続部材１４の内部空間１４ｄとが気密に接続される。貯留ケース１５は、流通路Ｒの途中（第１流通路１２ａと第２流通路１２ｂとの間）に内部空間１４ｄを介して貯留空間１５ｃが接続されるように、接続部材１４を介してベース１２に接続される。 The storage case 15 has an opening 15a1 opened upward, and a bottomed cylindrical case body 15a having a storage space 15c therein, and a lid 15b that closes the opening 15a1 of the case body 15a. Have. The case main body 15a and the lid 15b are injection molded products made of a resin material, for example, and are integrally molded. A screw portion 15a2 that is screwed with the screw portion 14c1 of the connection member 14 is formed on the periphery of the opening 15a1, and the screw portions 14c1 and 15a2 are screwed together, whereby the storage space 15c of the case main body portion 15a and the connection member 14 are connected. The internal space 14d is hermetically connected. The storage case 15 has a base via the connection member 14 so that the storage space 15c is connected to the middle of the flow path R (between the first flow path 12a and the second flow path 12b) via the internal space 14d. 12 is connected.

図１及び２に示すように、取付部材１６は、ハンマードリル２に固定具５を介して回収装置６を取り付けるために用いられる。具体的に、取付部材１６は、カップ部材１８と、カップ部材１８と組み合わされるボール部材１９とを有する。カップ部材１８は、ベース１２の外周部に固定される軸部１８ａと、軸部１８ａと一体的に形成されたカップ部１８ｂとを有する。ボール部材１９は、固定具５に固定される軸部１９ａと、軸部１９ａと一体的に形成された球状のボール部１９ｂとを有する。カップ部１８ｂは、ボール部１９ｂの表面に球面接触するように、ボール部１９ｂと組み合わされている。これにより取付部材１６は、カップ部１８ｂとボール部１９ｂとを組み合わせてなるボールジョイント部２０を有する。ボールジョイント部２０は、貯留ケース１５とハンマードリル２との間に配置され、固定具５を介してハンマードリル２に接続されるとともに、ベース１２と接続部材１４とを介して貯留ケース１５に接続される。カップ部１８ｂとボール部１９ｂとが相対的に移動することで、貯留ケース１５はその自重により、ケース本体部１５ａの底部が常に鉛直方向下方に配向される。なお、カップ部材１８の軸部１８ａを固定具５に固定し、ボール部材１９の軸部１９ａをベース１２の外周部に固定してもよい。 As shown in FIGS. 1 and 2, the attachment member 16 is used to attach the recovery device 6 to the hammer drill 2 via the fixture 5. Specifically, the attachment member 16 includes a cup member 18 and a ball member 19 combined with the cup member 18. The cup member 18 includes a shaft portion 18a fixed to the outer peripheral portion of the base 12, and a cup portion 18b formed integrally with the shaft portion 18a. The ball member 19 has a shaft portion 19a fixed to the fixture 5 and a spherical ball portion 19b formed integrally with the shaft portion 19a. The cup portion 18b is combined with the ball portion 19b so as to make spherical contact with the surface of the ball portion 19b. Thereby, the attachment member 16 has the ball joint part 20 formed by combining the cup part 18b and the ball part 19b. The ball joint portion 20 is disposed between the storage case 15 and the hammer drill 2, is connected to the hammer drill 2 through the fixture 5, and is connected to the storage case 15 through the base 12 and the connection member 14. Is done. By the relative movement of the cup portion 18b and the ball portion 19b, the bottom of the case body portion 15a is always oriented downward in the vertical direction due to its own weight. Note that the shaft portion 18 a of the cup member 18 may be fixed to the fixture 5, and the shaft portion 19 a of the ball member 19 may be fixed to the outer peripheral portion of the base 12.

図７は、第１モード時におけるドリルビット３と回収装置６との様子を示す断面図である。図８は、第２モード時におけるドリルビット３と回収装置６との様子を示す断面図である。図７に示すように、システム１の使用時には、オペレータは、調査対象のコンクリートをドリルビット３で削孔し、スタンド８の先端がコンクリートの表面に当接して削孔内の目的の深さに切刃部３ｄが達したタイミングで、スライド部材１３の操作部１３ｂをベース１２から引き出すようにスライドさせる。これにより、回収装置６は第１モードとなる。このとき回収装置６では、流通路Ｒ（第１流通路１２ａ及び第２流通路１２ｂ）が、一対の接続路１３ｄ、１３ｅを通じ、内部空間１４ｄを介して貯留空間１５ｃに接続される。切刃部３ｄで削孔されたコンクリートの削孔粉は、吸引装置９（図１参照）の吸引力により、連通孔３ｆ、吸塵通路３ｅ、連通路３ｇ、第１通路４ｃ、第２通路４ｄ、接続ホース１０Ａの流路、第１流通路１２ａ、接続路１３ｄ、ガイド部材１７の流路、及び、内部空間１４ｄを介し、貯留空間１５ｃに貯留される。貯留空間１５ｃに削孔粉とともに送られた空気は、接続部材１４を筒軸方向に沿って流通し、開口１２ｂ２から第２流通路１２ｂ及び接続路１３ｅに送られ、接続ホース１０Ｂの流路を介して吸引装置９に吸引される。 FIG. 7 is a cross-sectional view showing the state of the drill bit 3 and the recovery device 6 in the first mode. FIG. 8 is a cross-sectional view showing the state of the drill bit 3 and the recovery device 6 in the second mode. As shown in FIG. 7, when the system 1 is used, the operator drills the concrete to be investigated with the drill bit 3, and the tip of the stand 8 comes into contact with the surface of the concrete so that the target depth in the drilling hole is reached. At the timing when the cutting edge portion 3d reaches, the operation portion 13b of the slide member 13 is slid so as to be pulled out from the base 12. Thereby, the collection | recovery apparatus 6 will be in a 1st mode. At this time, in the recovery device 6, the flow path R (the first flow path 12a and the second flow path 12b) is connected to the storage space 15c through the pair of connection paths 13d and 13e via the internal space 14d. The concrete drilling powder drilled by the cutting edge 3d is connected to the communication hole 3f, the dust suction passage 3e, the communication passage 3g, the first passage 4c, and the second passage 4d by the suction force of the suction device 9 (see FIG. 1). These are stored in the storage space 15c via the flow path of the connection hose 10A, the first flow path 12a, the connection path 13d, the flow path of the guide member 17, and the internal space 14d. The air sent to the storage space 15c together with the drilling powder flows through the connection member 14 along the cylinder axis direction, and is sent from the opening 12b2 to the second flow passage 12b and the connection passage 13e, and passes through the flow path of the connection hose 10B. Through the suction device 9.

図８に示すように、連通孔３ｆを外気中に配置した状態で、オペレータがスライド部材１３の操作部１３ｂをベース１２に押し込むようにスライドさせる。これにより、回収装置６は第２モードとなる。このとき回収装置６では、流通路Ｒ（第１流通路１２ａ及び第２流通路１２ｂ）が、短絡路１３ｃを通じて短絡される。連通孔３ｆから吸い込まれた外気は、吸引装置９の吸引力により、吸塵通路３ｅ、連通路３ｇ、第１通路４ｃ、第２通路４ｄ、接続ホース１０Ａの流路、第１流通路１２ａ、短絡路１３ｃ、及び、第２流通路１２ｂを流通し、接続ホース１０Ｂの流路を介して吸引装置９に吸引される。これにより、連通孔３ｆ、吸塵通路３ｅ、連通路３ｇ、第１通路４ｃ、第２通路４ｄ、接続ホース１０Ａの流路、流通路Ｒ、及び、接続ホース１０Ｂの流路がそれぞれ清掃されて、残留物が除去される。貯留ケース１５は、第２モード中または吸引装置９の停止時において、接続部材１４から取り外すことができる。 As shown in FIG. 8, the operator slides the operation portion 13 b of the slide member 13 into the base 12 in a state where the communication hole 3 f is arranged in the outside air. Thereby, the collection | recovery apparatus 6 will be in 2nd mode. At this time, in the recovery device 6, the flow path R (the first flow path 12a and the second flow path 12b) is short-circuited through the short circuit 13c. The outside air sucked from the communication hole 3f is sucked by the suction device 9, and the dust suction passage 3e, the communication passage 3g, the first passage 4c, the second passage 4d, the passage of the connection hose 10A, the first flow passage 12a, the short circuit. It flows through the path 13c and the second flow path 12b, and is sucked into the suction device 9 through the flow path of the connection hose 10B. Thereby, the communication hole 3f, the dust suction passage 3e, the communication passage 3g, the first passage 4c, the second passage 4d, the flow path of the connection hose 10A, the flow path R, and the flow path of the connection hose 10B are respectively cleaned. Residue is removed. The storage case 15 can be removed from the connection member 14 during the second mode or when the suction device 9 is stopped.

このようにシステム１では、第１モードと第２モードとの両方において、流通路Ｒにおける削孔粉及び空気の流通方向が、第１流通路１２ａから第２流通路１２ｂに向かう同一方向に保たれる。従って、第１モードと第２モードとを繰り返し交互に行っても、例えば、流通路Ｒの第２流通路１２ｂに付着していた不純物が貯留空間１５ｃに混入しにくい。また、第１モードと第２モードとは、スライド部材１３とベース１２とを組み合わせた簡易な構造において、スライド部材１３とベース１２とを相対的にスライドさせることで簡単に切り替えることができる。これにより、簡易な構造で、削孔粉に不純物が混合するのを適切に防止し、削孔粉を適切に採取できる。 Thus, in the system 1, in both the first mode and the second mode, the flow direction of the drilling powder and air in the flow path R is maintained in the same direction from the first flow path 12a to the second flow path 12b. Be drunk. Therefore, even if the first mode and the second mode are repeatedly performed alternately, for example, impurities attached to the second flow path 12b of the flow path R are not easily mixed into the storage space 15c. In addition, the first mode and the second mode can be easily switched by relatively sliding the slide member 13 and the base 12 in a simple structure in which the slide member 13 and the base 12 are combined. Thereby, it is possible to appropriately prevent impurities from being mixed with the drilling powder and to appropriately collect the drilling powder with a simple structure.

なお、第２モードでは、連通孔３ｆから吸い込まれた外気は、ガイド部材１７の流路と接続部材１４の内部空間１４ｄとには流通しないが、貯留ケース１５を接続部材１４から取り外した状態において、回収装置６を第１モードに設定すると、連通孔３ｆから吸い込まれた外気をガイド部材１７の流路と接続部材１４の内部空間１４ｄとに流通させ、下端１４ｂの開口１４ｂ１から排気することができる。これにより、ガイド部材１７の流路と接続部材１４の内部空間１４ｄとの清掃も良好に行うことができる。 In the second mode, outside air sucked from the communication hole 3f does not flow through the flow path of the guide member 17 and the internal space 14d of the connection member 14, but in a state where the storage case 15 is removed from the connection member 14. When the recovery device 6 is set to the first mode, the outside air sucked from the communication hole 3f is circulated through the flow path of the guide member 17 and the internal space 14d of the connection member 14, and is exhausted from the opening 14b1 of the lower end 14b. it can. Thereby, the cleaning of the flow path of the guide member 17 and the internal space 14d of the connection member 14 can be performed well.

また、回収装置６では、ベース１２の挿通路１２ｃの延びる方向に沿って、スライド部材１３とベース１２とを相対的にスライドさせることにより、簡単な操作で第１モードと第２モードとを切り替えることができる。これにより、例えば、オペレータがコンクリートの削孔作業中であっても、一方の手でハンドル７を握りながら他方の手で操作部１３ｂを操作することにより、一人で容易かつ迅速に削孔粉を貯留ケース１５に回収できる。 Moreover, in the collection | recovery apparatus 6, by switching the slide member 13 and the base 12 relatively along the direction where the insertion path 12c of the base 12 is extended, it switches between 1st mode and 2nd mode with easy operation. be able to. Thus, for example, even when the operator is drilling concrete, the operator can easily and quickly drill the drilling powder by operating the operating portion 13b with the other hand while holding the handle 7 with one hand. It can be collected in the storage case 15.

また、スライド部材１３の長手方向に垂直な断面の形状と、挿通路１２ｃの延びる方向に垂直な断面の形状とを、ともに同一の非真円形状とすることにより、挿通路１２ｃの内部で、スライド部材１３が、その長手方向に垂直な断面の周方向（軸部１３ａの軸周り）に回転するのが防止される。これにより、第１流通路１２ａ及び第２流通路１２ｂに対する短絡路１３ｃまたは一対の接続路１３ｄ、１３ｅの各位置関係を安定して保つことができ、回収装置６を安定して駆動できる。また、スライド部材１３が挿通路１２ｃに対して気密に挿入されているので、第１モード中に、軸部１３ａと挿通路１２ｃとの隙間から不純物が入り込み、貯留空間１５ｃに貯留される削孔粉に混入するのを防止できる。 In addition, by making the shape of the cross section perpendicular to the longitudinal direction of the slide member 13 and the shape of the cross section perpendicular to the direction in which the insertion passage 12c extends, the inside of the insertion passage 12c, The slide member 13 is prevented from rotating in the circumferential direction of the cross section perpendicular to the longitudinal direction (around the axis of the shaft portion 13a). Thereby, each positional relationship of the short circuit 13c with respect to the 1st flow path 12a and the 2nd flow path 12b or a pair of connection paths 13d and 13e can be maintained stably, and the collection | recovery apparatus 6 can be driven stably. Further, since the slide member 13 is inserted in an airtight manner with respect to the insertion path 12c, during the first mode, impurities enter through the gap between the shaft portion 13a and the insertion path 12c and are stored in the storage space 15c. Mixing into the powder can be prevented.

また、接続部材１４は、内部空間１４ｄの流路断面積がベース１２から貯留ケース１５に向かって減少する漏斗状に形成され、第１モードでは、吸引装置９の吸引力によって、削孔粉が接続部材１４の内表面に沿って螺旋状に回転しながら貯留空間１５ｃに貯留される。これにより回収装置６において、ベース１２から貯留ケース１５へ向けて、削孔粉の流通状態を安定に保ち、削孔粉を貯留空間１５ｃに効率よく貯留できる。 The connecting member 14 is formed in a funnel shape in which the flow path cross-sectional area of the internal space 14d decreases from the base 12 toward the storage case 15, and in the first mode, the drilling powder is generated by the suction force of the suction device 9. It is stored in the storage space 15 c while spirally rotating along the inner surface of the connection member 14. Thereby, in the collection | recovery apparatus 6, from the base 12 toward the storage case 15, the distribution | circulation state of drilling powder is stably maintained, and drilling powder can be efficiently stored in the storage space 15c.

また、取付部材１６が貯留ケース１５の底部を鉛直方向下方に配向させるためのボールジョイント部２０を有しているので、ドリルビット３のコンクリートの削孔方向とは無関係に、削孔粉を貯留空間１５ｃに安定して貯留できる。これにより、例えば、ハンマードリル２の削孔姿勢を横向き姿勢と上向き姿勢との間で相互に変えたとしても、貯留空間１５ｃ内に削孔粉を貯留した状態を適切に保つことができる。 Moreover, since the mounting member 16 has the ball joint part 20 for orienting the bottom part of the storage case 15 downward in the vertical direction, the drilling powder is stored regardless of the drilling direction of the concrete of the drill bit 3. It can be stably stored in the space 15c. Thereby, for example, even if the drilling posture of the hammer drill 2 is changed between the horizontal posture and the upward posture, the state in which the drilling powder is stored in the storage space 15c can be appropriately maintained.

また、接続ホース１０Ａの流路と第１流通路１２ａ、接続ホース１０Ｂの流路と第２流通路１２ｂ、及び、第１流通路１２ａとガイド部材１７の流路は、それぞれ滑らかに接続され、第１流通路１２ａ、第２流通路１２ｂ、及び、一対の接続路１３ｄ、１３ｅの各流路断面形状と各流路断面のサイズとが同一に設定されるとともに、スライド部材１３の長手方向から見て、ベース１２の径方向における第１流通路１２ａ、第２流通路１２ｂ、及び、一対の接続路１３ｄ、１３ｅの各幅と、短絡路１３ｃの幅とが同一に設定されている。よってシステム１では、接続ホース１０Ａ、第１流通路１２ａ、第２流通路１２ｂ、短絡路１３ｃ、一対の接続路１３ｄ、１３ｅ、ガイド部材１７、及び、接続ホース１０Ｂの各内部に削孔粉が残留しにくい。このため第２モードでは、システム１で削孔粉が流通する各経路を効率よく清掃することができる。 Further, the flow path of the connection hose 10A and the first flow path 12a, the flow path of the connection hose 10B and the second flow path 12b, and the flow path of the first flow path 12a and the guide member 17 are each smoothly connected. The flow path cross-sectional shape of each of the first flow path 12a, the second flow path 12b, and the pair of connection paths 13d and 13e and the size of each flow path cross section are set to be the same, and from the longitudinal direction of the slide member 13 As seen, the widths of the first flow path 12a, the second flow path 12b, and the pair of connection paths 13d and 13e in the radial direction of the base 12 and the width of the short-circuit path 13c are set to be the same. Therefore, in the system 1, drilling powder is formed in each of the connection hose 10A, the first flow path 12a, the second flow path 12b, the short circuit 13c, the pair of connection paths 13d and 13e, the guide member 17, and the connection hose 10B. Hard to remain. For this reason, in the second mode, each path through which the drilling powder flows can be efficiently cleaned in the system 1.

なお、本発明は、前述した実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲で、その構成を変更、追加、又は削除することができる。 The present invention is not limited to the above-described embodiment, and the configuration can be changed, added, or deleted without departing from the spirit of the present invention.

ベース１２の形状は円柱状に限定されず、例えば直方体状など、円柱状以外の形状であってもよい。軸部１３ａの長手方向に垂直な断面の形状と、挿通路１２ｃの延びる方向に垂直な断面の形状とは、ともに同一の非真円形状であればよく、矩形状に限定されない。従って、例えば、楕円状、三角形状、及び、五角形以上の多角形状のいずれかであってもよい。 The shape of the base 12 is not limited to a cylindrical shape, and may be a shape other than a cylindrical shape such as a rectangular parallelepiped shape. The shape of the cross section perpendicular to the longitudinal direction of the shaft portion 13a and the shape of the cross section perpendicular to the direction in which the insertion passage 12c extends may be the same non-circular shape, and are not limited to a rectangular shape. Therefore, for example, any one of an elliptical shape, a triangular shape, and a polygonal shape that is a pentagon or higher may be used.

以上のように、本発明によれば、ハンマードリルを用いたコンクリート削孔粉回収システムにおいて、簡易な構造で、コンクリートの削孔粉に不純物が混合するのを適切に防止し、削孔粉を適切に採取できる優れた効果を有する。従って、この効果の意義を発揮できるコンクリート削孔粉回収装置及びコンクリート削孔粉回収システムとして、広く適用すると有益である。 As described above, according to the present invention, in a concrete drilling powder recovery system using a hammer drill, with a simple structure, it is possible to appropriately prevent impurities from being mixed with concrete drilling powder, It has an excellent effect that can be collected properly. Therefore, it is beneficial to apply widely as a concrete drilling powder recovery device and concrete drilling powder recovery system that can demonstrate the significance of this effect.

Ｒ流通路
１コンクリート削孔粉回収システム
２ハンマードリル
３ドリルビット
３ｅ吸塵通路
６コンクリート削孔粉回収装置
９吸引装置
１２ベース
１２ａ第１流通路（上流側領域）
１２ｂ第２流通路（下流側領域）
１２ｃ挿通路
１３スライド部材
１３ｃ短絡路
１３ｄ、１３ｅ接続路
１４接続部材
１４ｄ内部空間
１５貯留ケース
１５ｃ貯留空間
１６取付部材
２０ボールジョイント部 R Flow path 1 Concrete drilling powder recovery system 2 Hammer drill 3 Drill bit 3e Dust suction path 6 Concrete drilling powder recovery device 9 Suction device 12 Base 12a First flow path (upstream area)
12b Second flow path (downstream area)
12c Insertion path 13 Slide member 13c Short path 13d, 13e Connection path 14 Connection member 14d Internal space 15 Storage case 15c Storage space 16 Mounting member 20 Ball joint part

Claims

A concrete drilling powder collecting device that collects the drilling powder of concrete drilled using a hammer drill holding a drill bit having a dust suction passage inside through the suction force of the suction device through the dust suction passage. And
A base on which one end is connected to the dust suction passage and the other end is connected to the suction device to form a flow passage through which the drilling powder flows;
A storage case connected in the middle of the flow path, having a storage space for storing the drilling powder flowing through the flow path, and connected to the base;
A slide member that is slidably combined with the base so as to traverse an upstream region on the upstream side and a downstream region on the downstream side of the storage case in the flow path,
The slide member short-circuits the upstream region and the downstream region without going through the storage space, and a pair of connection paths that connect the upstream region and the downstream region to the storage space, respectively. A short circuit is formed,
By relatively sliding the slide member and the base, the upstream region and the downstream region are connected to the storage space via the pair of connection paths and circulate through the upstream region. The first mode in which the drilling powder is stored in the storage space and the air in the storage space is exhausted to the downstream region, and the upstream region and the downstream region are short-circuited via the short circuit. A concrete hole drilling powder collecting apparatus that is switched to a second mode in which air flows through the short-circuit path between the upstream region and the downstream region.

The slide member has an elongated shape, and the flow path and an insertion path into which the slide member is inserted are formed inside the base.
Inside the slide member, the short circuit path is formed to extend in the longitudinal direction of the slide member, and the pair of connection paths are formed to extend in a direction intersecting the short circuit path,
The concrete hole drilling powder recovery apparatus according to claim 1, wherein the first mode and the second mode are switched by relatively sliding the slide member and the base in a direction in which the insertion passage extends.

The slide member has an operation portion provided at one end in the longitudinal direction so as to be exposed to the outside from the base, and the first mode and the second mode are formed by pushing or pulling out the operation portion with respect to the base. The concrete hole drilling powder recovery device according to claim 2, wherein

The shape of the cross section perpendicular to the longitudinal direction of the slide member and the shape of the cross section perpendicular to the extending direction of the insertion passage are both the same non-circular shape,
The concrete hole drilling powder collecting device according to claim 2 or 3, wherein the slide member is inserted in an airtight manner with respect to the insertion passage.

A connecting member disposed between the base and the storage case, connected to the base and the storage case, and having an internal space through which the drilling powder flows from the flow path to the storage space; ,
5. The concrete hole drilling powder collecting apparatus according to claim 1, wherein the connection member is formed in a funnel shape in which a cross section of the internal space decreases from the base toward the storage case. 6.

Further comprising an attachment member attached to the hammer drill,
The said attachment member is arrange | positioned between the said storage case and the said hammer drill, and has a ball joint part connected to the said storage case and the said hammer drill of any one of Claims 1-5. Concrete drilling powder recovery device.

A concrete drilling powder collecting system comprising the drill bit, the hammer drill, and the concrete drilling powder collecting apparatus according to any one of claims 1 to 6.