JP6750887B2

JP6750887B2 - Pile hammer

Info

Publication number: JP6750887B2
Application number: JP2017234367A
Authority: JP
Inventors: 敬二林; 尚道受川
Original assignee: オーエッチ工業株式会社
Priority date: 2017-12-06
Filing date: 2017-12-06
Publication date: 2020-09-02
Anticipated expiration: 2037-12-06
Also published as: JP2019100132A

Description

本発明は、金属製頭部を有する杭打ちハンマーに関する。 The present invention relates to a pile driving hammer having a metal head.

概ね鎚・槌とも呼ばれるハンマーは、杭を打つ際には、頭部が重いので、柄を持って振って、杭頭等の高所打点を円弧軌跡を描かせながら打ち下ろすのは重労働になっている。そのため、杭頭を垂直軌跡を描かせながら打ち下ろすハンマーが考えられている。
特許文献１のパイプハンマーは、握りパイプの頭端に重錘を設け、握りパイプの下端に、該握りパイプの長さよりやや短い紐を取付け、この紐の先にクリップを装着している（実用新案登録請求の範囲）。 Generally, hammers, which are also called hammers and mallets, have a heavy head when hitting a pile, so it is hard work to shake the handle with a handle and drop down a high-point hit point such as a pile head while drawing an arc trajectory. ing. Therefore, a hammer that hits down the pile head while drawing a vertical trajectory has been considered.
In the pipe hammer of Patent Document 1, a weight is provided at the head end of the grip pipe, a string slightly shorter than the length of the grip pipe is attached to the lower end of the grip pipe, and a clip is attached to the tip of the string (practical use). Request for registration of new model).

実用新案登録第３１４８４８３号公報Utility model registration No. 3148483

前記従来技術は、杭や支柱を握りパイプに通して、握りパイプを上下垂直に振り下ろして杭頭を叩いて打ち込むことができるが、杭や支柱に対する打撃力が弱く、重錘から握りパイプが抜けることがあり、また、重錘を円弧軌跡を描かせながら杭頭に打ったり、物を打ったり潰したり壊したりするには、握りパイプと重錘との連結強度が足りない、等の問題を有している。 In the above-mentioned conventional technique, a pile or a pillar can be passed through a grip pipe, and the grip pipe can be vertically vertically swung down to hit the pile head, but the striking force against the pile or the pillar is weak, and the grip pipe from the weight is weak. There is a problem that the connection strength between the grip pipe and the weight is insufficient in order to hit the pile head while drawing an arc trajectory of the weight, hit, crush, or destroy the weight, etc. have.

本発明は、このような従来技術の問題点を解決できるようにした杭打ちハンマーを提供することを目的とする。
本発明は、杭打ちを上下垂直の振り下ろしも円弧軌跡の振り下ろしも、高耐久性を有して強打できるようにした杭打ちハンマーを提供することを目的とする。 It is an object of the present invention to provide a pile driving hammer capable of solving the problems of the prior art.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a pile driving hammer which has high durability and can be struck both vertically down and vertically down an arc locus.

本発明における課題解決のための具体的手段は、次の通りである。
第１に、略長方体形状の頭部体３の一長面３ａに連結穴４を穿孔し、この連結穴４にパイプ柄５の先端を挿入して連結した杭打ちハンマーであって、
前記パイプ柄５の先端内部に杭頭７ａと当接するプラグ８を嵌入し、頭部体３の連結穴４の奥面にパイプ柄５とプラグ８の先端８ａが当接する打撃受け面９を形成し、前記プラグ８を頭部体３の前記一長面３ａから突出する長さとしていることを特徴とする。 Specific means for solving the problems in the present invention are as follows.
First, a pile driving hammer in which a connecting hole 4 is bored in one long surface 3a of a substantially rectangular head body 3 and the tip of a pipe handle 5 is inserted into the connecting hole 4 for connection.
A plug 8 that abuts against the pile head 7a is fitted inside the tip of the pipe handle 5, and a striking face 9 on which the pipe handle 5 and the tip 8a of the plug 8 abut is formed on the inner surface of the connecting hole 4 of the head body 3. However, the plug 8 has a length protruding from the one long surface 3a of the head body 3.

第２に、前記略長方体形状の頭部体３は、前記一長面３ａと反対側の長面３ｂ、前記一長面３ａと直交する２長面３ｃ及び長手方向の両端面３ｄの内の少なくとも両端面３ｄが打撃面とされていることを特徴とする。
第３に、前記プラグ８の外周は、連結穴４の奥面に当接する先端８ａ側が連結穴４から突出する端部８ｂよりも大径のテーパに形成されていることを特徴とする。 Second, the substantially rectangular parallelepiped head 3 includes a long surface 3b opposite to the long surface 3a, a long surface 3c orthogonal to the long surface 3a, and both end surfaces 3d in the longitudinal direction. At least both end surfaces 3d therein are striking surfaces.
Thirdly, the outer periphery of the plug 8 is characterized in that the tip 8a side that abuts on the inner surface of the connection hole 4 is formed to have a larger diameter than the end 8b protruding from the connection hole 4.

本発明によれば、杭打ちを上下垂直の振り下ろしも円弧軌跡の振り下ろしも、高耐久性を有して強打できる。
即ち、請求項１に係る発明は、パイプ柄５の先端内部にプラグ８を嵌入し、頭部体３の連結穴４の奥面にパイプ柄５とプラグ８の先端８ａが当接する打撃受け面９を形成しているので、上下垂直の振り下ろしでプラグ８を介して頭部体３で杭頭７ａを強打でき、プラグ８を頭部体３の一長面３ａから突出する長さとしているので、プラグ８と頭部体３の連結強度を高くして円弧軌跡の振り下ろしも、高耐久性を有して強打できる。 According to the present invention, a pile driving can be swung with high durability both vertically and vertically down and down and down along an arc locus.
That is, the invention according to claim 1 is a striking face in which the plug 8 is fitted inside the tip of the pipe handle 5 and the pipe handle 5 and the tip 8a of the plug 8 abut against the inner surface of the connecting hole 4 of the head body 3. Since 9 is formed, the pile head 7a can be struck by the head body 3 through the plug 8 by vertically swinging down, and the plug 8 has a length protruding from the one long surface 3a of the head body 3. Therefore, the connection strength between the plug 8 and the head body 3 can be increased and the swinging down of the arc locus can be swung with high durability.

請求項２に係る発明は、略長方体形状の頭部体３は、少なくとも長手方向の両端面３ｄを打撃面として利用できる。
請求項３に係る発明は、プラグ８の外周は、連結穴４の奥面に当接する先端８ａ側が連結穴４から突出する端部８ｂよりも大径のテーパに形成されているので、プラグ８で杭頭７ａを打撃することができ、プラグ８が打撃で変形しても、プラグ８と頭部体３の連結強
度を高めることができる。 In the invention according to claim 2, in the substantially rectangular parallelepiped head body 3, at least both end surfaces 3d in the longitudinal direction can be used as a striking surface.
In the invention according to claim 3, the outer periphery of the plug 8 is formed so that the tip 8a side that abuts the inner surface of the connecting hole 4 has a larger diameter than the end 8b protruding from the connecting hole 4, and thus the plug 8 The pile head 7a can be hit with, and the connection strength between the plug 8 and the head body 3 can be increased even if the plug 8 is deformed by hitting.

本発明の実施形態を示す断面正面図である。It is a section front view showing an embodiment of the present invention. 図１のＸ−Ｘ線断面図である。It is the XX sectional view taken on the line of FIG. 上下垂直打ちの使用状態図である。It is a usage state diagram of vertical up and down striking. 円弧軌跡打ちの使用状態図である。It is a usage state diagram of circular arc trajectory striking.

以下、本発明の実施の形態を図面に基づいて説明する。
図１〜３において、杭打ちハンマー１は、略長方体形状の頭部体３の一長面３ａに連結穴４を穿孔し、この連結穴４にパイプ柄５の先端を挿入して連結している。
前記頭部体３は、鉄、鋼等の金属で形成されていて、杭、支柱等に打撃力を与え得る重鎮となっており、前記一長面３ａとその反対側の長面３ｂ、前記一長面３ａと直交する２長面３ｃ及び長手方向の両端面３ｄの６面を有する。 Embodiments of the present invention will be described below with reference to the drawings.
1 to 3, the pile driving hammer 1 has a connection hole 4 formed in one long surface 3a of a substantially rectangular head body 3, and the tip of a pipe handle 5 is inserted into the connection hole 4 to connect the connection hole 4 with the connection hole 4. doing.
The head body 3 is made of a metal such as iron or steel, and serves as a heavy weight capable of giving a striking force to a pile, a support, or the like, and has the one long surface 3a and the opposite long surface 3b. It has six faces, that is, a long face 3c orthogonal to the long face 3a and both end faces 3d in the longitudinal direction.

パイプ柄５は鋼等の金属で管形状に形成されていて、中実、中空の杭７、支柱等に嵌合できる管内径を有している。
頭部体３は一長面３ａがパイプ柄５と連結する連結面であり、長手方向の端部の両端面３ｄは打撃面であり、その他の３面も打撃可能な打撃面とされ、前記パイプ柄５の周囲の一長面３ａも打撃面とすることも可能になっている。前記４長面３ａ、３ｂ、３ｃは略平坦であるのに対して、両端面３ｄは周囲部が面取りを施している。 The pipe handle 5 is formed of a metal such as steel in a tubular shape, and has a pipe inner diameter capable of being fitted into solid or hollow piles 7, columns and the like.
In the head body 3, one long surface 3a is a connecting surface for connecting with the pipe handle 5, both end surfaces 3d at the ends in the longitudinal direction are striking surfaces, and the other three surfaces are striking surfaces capable of striking. The one long surface 3a around the pipe handle 5 can also be used as a striking surface. The four long surfaces 3a, 3b, 3c are substantially flat, while the both end surfaces 3d are chamfered at their peripheral portions.

前記頭部体３の一長面３ａの連結穴４は、ドリルで穴明けした後、ドリル円錐穴４ｂの深さを浅くするように中ぐりしてリング状の平坦な打撃受け面９を形成している。連結穴４の入口周囲はＲ面取りが施されている。
前記パイプ柄５の先端内部には杭頭７ａと当接するプラグ８を嵌入している。このプラグ８は鋼塊を焼き入れしたものであり、その外周は、連結穴４の奥の打撃受け面９に当接する先端８ａ側が連結穴４から突出する端部８ｂよりも大径であって、先太りテーパに形成されている。 The connecting hole 4 of the one long surface 3a of the head body 3 is drilled and then bored to reduce the depth of the drill conical hole 4b to form a ring-shaped flat impact receiving surface 9. doing. A round chamfer is applied around the entrance of the connection hole 4.
A plug 8 that abuts the pile head 7a is fitted inside the tip of the pipe handle 5. The plug 8 is made by quenching a steel ingot, and the outer circumference of the plug 8 has a diameter larger than that of the end portion 8b protruding from the connection hole 4 on the side of the tip 8a that abuts on the impact receiving surface 9 at the back of the connection hole 4. The taper is made thicker.

パイプ柄５はパイプの中途部を上下端部より細くしているが、全長同一径のパイプで形成してもよい。このパイプ柄５は先端内部にプラグ８を嵌入し、それらの先端を頭部体３の連結穴４に奥まで挿入して打撃受け面９に当接して連結する。
前記連結は、パイプ柄５を支柱に嵌合して、支柱にプラグ８の下面を当接し、プラグ８の先端８ａを頭部体３の打撃受け面９に当接し、その状態で上側の長面３ｂをハンマーで打撃すると、パイプ柄５の先端やプラグ８が最初に若干変形し、プラグ８及びパイプ柄５の先端を連結穴４に圧着する。なお。パイプ柄５の先端外周には接着剤が塗布され、頭部体３との結合強度を高くしている。 In the pipe handle 5, the middle part of the pipe is made thinner than the upper and lower ends, but it may be formed of a pipe having the same overall length. The pipe handle 5 has plugs 8 fitted inside the tips thereof, and the tips thereof are inserted deeply into the connection holes 4 of the head body 3 to abut against the striking surface 9 for connection.
In the connection, the pipe handle 5 is fitted to the support, the lower surface of the plug 8 is brought into contact with the support, and the tip 8a of the plug 8 is brought into contact with the striking surface 9 of the head body 3, and in this state, the upper length is increased. When the surface 3b is hit with a hammer, the tip of the pipe handle 5 and the plug 8 are first deformed slightly, and the plug 8 and the tip of the pipe handle 5 are crimped to the connecting hole 4. Incidentally. An adhesive is applied to the outer circumference of the tip of the pipe handle 5 to enhance the bonding strength with the head body 3.

図３に示すように、杭打ちハンマー１を上下垂直打ちに使用するとき、頭部体３を上にしてパイプ柄５を下端から杭７に嵌合し、そしてパイプ柄５または頭部体３を持って、持ち上げてから自然落下させる。
落下時に、頭部体３は打撃受け面９に当接しているプラグ８の先端８ａに全重量を与え、プラグ８の下端面８ｃは杭７の杭頭７ａに衝突し、杭打ちの打撃を与える。パイプ柄５は杭７に打撃を直接与えるものではないが、パイプ柄５の先端面はプラグ８の先端８ａと一体になって打撃受け面９に当接しているので、打撃受け面９から受ける力はプラグ８に伝播させることができる。 As shown in FIG. 3, when the pile driving hammer 1 is used for vertical vertical driving, the pipe body 5 is fitted to the pile 7 from the lower end with the head body 3 facing upward, and the pipe handle 5 or the head body 3 Hold, lift and let it fall naturally.
When falling, the head body 3 gives the entire weight to the tip 8a of the plug 8 that is in contact with the impact receiving surface 9, and the lower end surface 8c of the plug 8 collides with the pile head 7a of the pile 7 to strike the pile. give. The pipe handle 5 does not directly strike the pile 7, but the tip end surface of the pipe handle 5 is in contact with the strike receiving surface 9 integrally with the tip 8a of the plug 8 and therefore is received from the strike receiving surface 9. The force can be transmitted to the plug 8.

プラグ８は打撃受け面９と杭頭７ａとから圧縮される方向の力を受けるので、プラグ８及びパイプ柄５の先端は連結穴４により圧着されることになり、頭部体３とパイプ柄５の連結強度は確保される。
図４に示すように、杭７を打ち込んで最終仕上げをするとき、または短い杭７を打ち込むとき（杭頭７ａの地上高が比較的低いとき）、杭打ちハンマー１は円弧軌跡打ちに使用される。 Since the plug 8 receives a force in the direction of compression from the impact receiving surface 9 and the pile head 7a, the tips of the plug 8 and the pipe handle 5 are crimped by the connecting hole 4, and the head body 3 and the pipe handle are connected. The connection strength of 5 is secured.
As shown in FIG. 4, when driving the piles 7 for final finishing, or when driving the short piles 7 (when the ground height of the pile head 7a is relatively low), the pile driving hammer 1 is used for circular trajectory driving. R.

このとき、パイプ柄５を持って頭部体３を振り上げ、両端面３ｄを上下にして頭部体３に円弧軌跡を描かせながら打ち下ろし、端面３ｄを杭７の杭頭７ａに衝突し、杭打ちの打撃を与える。
パイプ柄５には頭部体３から軸心と直交する応力がかかるが、プラグ８の端部８ｂが頭部体３の長面３ａから突出しているので、長面３ａ付近でのパイプ柄５の強度が高く、円弧軌跡打ちの衝撃荷重を十分に耐える。 At this time, the head body 3 is swung up by holding the pipe handle 5, and both ends 3d are moved up and down while drawing down an arc locus on the head body 3, and the end surface 3d collides with the pile head 7a of the pile 7, Give a stakeout blow.
A stress orthogonal to the axis is applied to the pipe handle 5 from the head body 3, but since the end portion 8b of the plug 8 projects from the long surface 3a of the head body 3, the pipe handle 5 near the long surface 3a is formed. Has a high strength, and can withstand the impact load of circular arc striking.

杭打ちハンマー１の頭部体３は、両端面３ｄの他、一長面３ａと反対側の長面３ｂでも左右の２長面３ｃでも、また、一長面３ａのパイプ柄５周囲部分でも、杭７、支柱等を打撃することができる。
なお、本発明は前記実施形態に限定されるものではなく、部材の形状、構成及び組み合わせ等を変更したりすることもできる。 The head body 3 of the stake hammer 1 has both the end faces 3d, the long face 3b opposite to the long face 3a, the left and right long faces 3c, and the pipe handle 5 surrounding portion of the long face 3a. It is possible to hit the pile 7, the pillar, and the like.
It should be noted that the present invention is not limited to the above embodiment, and the shape, configuration, combination, etc. of the members can be changed.

例えば、頭部体３の長面３ａの連結穴４を、ドリルで穴明けした後、ドリル円錐穴４ｂを残さずに中ぐりして、円形の平坦な打撃受け面９を形成したり、プラグ８の先端８ａにドリル円錐穴４ｂに略適合する円錐突起を形成したりして、プラグ８の先端８ａの全面を打撃受け面９に当接させるようにしてもよい。
また、頭部体３の一長面３ａから穿孔した連結穴４は、ドリル円錐穴４ｂを反対長面３ｂまで貫通させ、反対長面３ｂからプラグ８に達する抜け止めボルトを挿入できるようにしてもよい。 For example, after the connecting hole 4 of the long surface 3a of the head body 3 is drilled, it is bored without leaving the drill conical hole 4b to form a circular flat impact receiving surface 9 or a plug. A conical projection that substantially fits the drill conical hole 4b may be formed at the tip 8a of the plug 8, and the entire surface of the tip 8a of the plug 8 may be brought into contact with the impact receiving surface 9.
In addition, the connecting hole 4 drilled from the one long surface 3a of the head body 3 allows the drill conical hole 4b to penetrate to the opposite long surface 3b so that a retaining bolt reaching the plug 8 from the opposite long surface 3b can be inserted. Good.

頭部体３は、側部の長面を打撃に使用し難くなるが、六角柱体、八角柱体等の多角柱体に形成することも可能である。 Although it is difficult to use the long side surface of the head body 3 for striking, the head body 3 can be formed into a polygonal prism body such as a hexagonal prism body or an octagonal prism body.

１杭打ちハンマー
３頭部体
３ａ一長面
３ｂ反対長面
３ｃ左右長面
３ｄ端面
４連結穴
４ｂドリル円錐穴
５パイプ柄
７杭
７ａ杭頭
８プラグ
８ａ先端
８ｂ端部
８ｃ下端面
９打撃受け面 1 Pile hammer 3 Head body 3a One long side 3b Opposite long side 3c Left and right long side 3d End face 4 Connecting hole 4b Drill conical hole 5 Pipe handle 7 Pile 7a Pile head 8 Plug 8a Tip 8b End part 8c Lower end face 9 Impact receiving surface

Claims

A pile in which a connecting hole (4) is bored in one long surface (3a) of the substantially rectangular head body (3) and the tip of a pipe handle (5) is inserted into the connecting hole (4) to connect the pile. A hammer,
A plug (8) that abuts the pile head (7a) is fitted inside the tip of the pipe handle (5), and the pipe handle (5) and the plug (5) are attached to the inner surface of the connecting hole (4) of the head body (3). A striking surface (9) with which the tip (8a) of 8) abuts is formed, and the plug (8) has a length protruding from the one long surface (3a) of the head body (3). And a pile driving hammer.

The substantially rectangular head body (3) has a long surface (3b) opposite to the long surface (3a), a long surface (3c) orthogonal to the long surface (3a), and a long side. The pile driving hammer according to claim 1, wherein at least both end faces (3d) of the both end faces (3d) in the direction are striking faces.

The outer periphery of the plug (8) is formed in a taper having a larger diameter at the tip (8a) side abutting on the inner surface of the connection hole (4) than at the end (8b) protruding from the connection hole (4). The pile driving hammer according to claim 1 or 2.