JP6132533B2

JP6132533B2 - Slider clearance adjustment mechanism

Info

Publication number: JP6132533B2
Application number: JP2012268231A
Authority: JP
Inventors: 北村　精男; 北村　　精男; 村田　敏彦; 敏彦村田
Original assignee: Giken Ltd
Current assignee: Giken Ltd
Priority date: 2012-12-07
Filing date: 2012-12-07
Publication date: 2017-05-24
Anticipated expiration: 2032-12-07
Also published as: JP2014114565A

Description

本発明は、摺動部クリアランス調整機構に関する。 The present invention relates to a sliding part clearance adjustment mechanism.

従来、杭を地盤に打ち込んで埋設する装置として、既設の杭から反力を取って杭を地中に圧入する杭圧入機が知られている。
杭圧入機は、装置本体と、装置本体の下部に設けられ、既設の杭を掴むクランプ装置と、装置本体の前端部に設けられ、既設の杭に隣接した位置に圧入する杭を挟んで保持するチャック装置とを備えている。また、杭圧入機の装置本体は、クランプ装置が配されたサドルと、サドルに対して前後動可能なスライドベースと、スライドベース上に配されてチャック装置が昇降可能に取り付けられているリーダマストとを備えている。
そして、杭圧入機は、クランプ装置で既設杭の上端側を掴み、その既設杭から反力を取った状態で杭を把持するチャック装置を降下させるようにして、杭を地中に圧入するようになっている（例えば、特許文献１参照。）。 2. Description of the Related Art Conventionally, a pile press-in machine that presses a pile into the ground by taking a reaction force from an existing pile is known as a device for driving a pile into the ground and burying it.
The pile press-in machine is provided at the lower part of the device main body, the clamp device that holds the existing pile, and the pile that is provided at the front end of the device main body and press-fitted into a position adjacent to the existing pile. A chuck device. The pile press-fitting machine body includes a saddle with a clamp device, a slide base that can move back and forth with respect to the saddle, and a leader mast that is mounted on the slide base so that the chuck device can be moved up and down. And.
Then, the pile presser presses the pile into the ground by grasping the upper end side of the existing pile with the clamp device and lowering the chuck device that holds the pile in a state where the reaction force is taken from the existing pile. (For example, refer to Patent Document 1).

この杭圧入機におけるスライドベースは、サドルに対して摺動可能に設けられており、そのスライドベースは機械重量および施工推力が掛かった状態で動かすことになるので、スライドベースの摺動部には摩擦が生じる。その摩擦による焼付きを防止するために、摺動部が摺接する部分にライナープレートを取り付け、オーバーホール時に定期的に交換を行っている。 The slide base in this pile presser is provided so as to be slidable with respect to the saddle, and the slide base is moved with the machine weight and construction thrust applied. Friction occurs. In order to prevent seizure due to the friction, a liner plate is attached to a portion where the sliding portion comes into sliding contact, and is periodically replaced during overhaul.

特公昭６３−４７８４８号公報Japanese Examined Patent Publication No. 63-47848

しかしながら、上記従来技術の場合、杭圧入機を稼動する時間の経過毎にライナープレートが摩耗し、摺動部とライナープレートの間のクリアランスが徐々に大きくなり、オーバーホール実施直前ではかなりのクリアランスが生じて圧入施工動作にも影響が出てくる。また、クリアランスが大きくなった状態では接触面積が少なくなり且つ面圧上昇するため、更に摩耗が進み易くなり悪循環である。
杭圧入機で圧入施工を好適に行うためには、摺動部におけるクリアランスを所定範囲に保つようにライナープレートをこまめに交換することが好ましいが、ライナープレートの部品代及びライナープレートの交換作業に多大の費用がかかるため、定期的なオーバーホールでライナープレートを交換して、クリアランスの調整を行っているという現状がある。 However, in the case of the above prior art, the liner plate wears with the passage of time for operating the pile presser, the clearance between the sliding portion and the liner plate gradually increases, and a considerable clearance occurs immediately before the overhaul is performed. This will also affect the press-fit operation. Further, when the clearance is increased, the contact area is reduced and the surface pressure is increased, so that wear is further promoted and a vicious cycle is caused.
In order to perform the press-fitting work properly with a pile press-fitting machine, it is preferable to frequently replace the liner plate so that the clearance at the sliding part is kept within a predetermined range. Because of the high cost, there is a current situation that the liner plate is replaced by regular overhaul to adjust the clearance.

本発明の目的は、容易に摺動部のクリアランスを調整することができる摺動部クリアランス調整機構を提供することである。 The objective of this invention is providing the sliding part clearance adjustment mechanism which can adjust the clearance of a sliding part easily.

以上の課題を解決するため、請求項１に記載の発明は、
既に地中に圧入された既設杭の上端側を掴んで支持する複数のクランプ装置を備えたサドルと、前記サドルに対して前後動可能なスライドベースと、前記スライドベース上で左右に旋回可能なリーダマストと、前記リーダマストの前面に昇降可能に取り付けられたチャック装置と、を備える杭圧入装置における、前記スライドベースの摺動部と、前記摺動部を摺動可能に案内する案内部側に配設されたライナープレートとの間のクリアランスを調整する摺動部クリアランス調整機構であって、
前記案内部に移動可能に設けられ、前記ライナープレートが取り付けられている可動部材と、
前記ライナープレートを前記摺動部に近接させる方向に前記可動部材の配置を切り替える第一調整部と、
前記摺動部から離間する方向に前記可動部材の配置を切り替える第二調整部と、
を備え、
前記第一調整部及び前記第二調整部の組は、前記摺動部の摺動方向に沿って複数組設けられ、
前記チャック装置側に設けられた前記第一調整部及び前記第二調整部の組の配置ピッチは、前記チャック装置から離れて設けられた前記第一調整部及び前記第二調整部の組の配置ピッチよりも狭いことを特徴とする。 In order to solve the above problems, the invention described in claim 1
A saddle provided with a plurality of clamping devices that grasp and support the upper end side of an existing pile already press-fitted into the ground, a slide base that can move back and forth with respect to the saddle, and a left and right pivot on the slide base In a pile press-fitting device comprising a leader mast and a chuck device attached to the front surface of the leader mast so as to be movable up and down, a sliding portion of the slide base, and a guide portion side for slidably guiding the sliding portion A sliding part clearance adjustment mechanism for adjusting a clearance between the liner plate and the liner plate ,
A movable member that is movably provided in the guide portion and to which the liner plate is attached;
A first adjustment unit that switches the arrangement of the movable member in a direction in which the liner plate is brought close to the sliding unit;
A second adjustment unit that switches the arrangement of the movable member in a direction away from the sliding unit;
With
A plurality of sets of the first adjustment part and the second adjustment part are provided along the sliding direction of the sliding part,
The arrangement pitch of the first adjustment unit and the second adjustment unit provided on the chuck device side is the arrangement pitch of the first adjustment unit and the second adjustment unit provided apart from the chuck device. It is characterized by being narrower than the pitch .

請求項２に記載の発明は、請求項１に記載の摺動部クリアランス調整機構において、
前記可動部材は、前記摺動部に対向するとともに互いに直交する２つの摺接面を有し、その摺接面にそれぞれ前記ライナープレートが取り付けられており、
前記第一調整部は、前記可動部材を介して前記案内部に螺合している第一ネジ部材を備え、前記第一ネジ部材を前記案内部にねじ込むことで、少なくとも一方のライナープレートを前記摺動部に近接させる方向に前記可動部材を移動させ、
前記第二調整部は、前記可動部材に出没可能に螺合している第二ネジ部材を備え、前記第二ネジ部材をねじ回して前記案内部に向けて突き出すことで、前記可動部材を前記摺動部から離間させる方向に移動させることを特徴とする。 The invention according to claim 2 is the sliding part clearance adjusting mechanism according to claim 1,
The movable member has two sliding contact surfaces that face the sliding portion and are orthogonal to each other, and the liner plate is attached to each sliding contact surface,
The first adjusting portion includes a first screw member screwed into the guide portion via the movable member, and the first screw member is screwed into the guide portion so that at least one liner plate is moved to the guide portion. Moving the movable member in a direction to approach the sliding portion;
The second adjustment unit includes a second screw member that is screwed into and out of the movable member, and the second screw member is screwed and protruded toward the guide unit, thereby moving the movable member to the guide unit. It is characterized by moving in a direction away from the sliding part.

請求項３に記載の発明は、請求項１に記載の摺動部クリアランス調整機構において、
前記可動部材は、前記摺動部に対向する摺接面を有し、その摺接面に前記ライナープレートが取り付けられており、
前記第一調整部は、前記案内部を貫通するように螺合し、その一端に前記可動部材が支持されているボルト部材を備え、前記ボルト部材をねじ回して前記一端側を前記案内部から突き出すことで、前記ライナープレートを前記摺動部に近接させる方向に前記可動部材を移動させ、
前記第二調整部は、前記ボルト部材の他端に螺着されたナット部材を備え、前記ナット部材を前記ボルト部材の一端に向けて締め込むことで相対的に前記他端側を前記案内部から突き出させて、前記可動部材を前記摺動部から離間させる方向に移動させることを特徴とする。 The invention according to claim 3 is the sliding part clearance adjustment mechanism according to claim 1,
The movable member has a sliding contact surface facing the sliding portion, and the liner plate is attached to the sliding contact surface,
The first adjusting portion includes a bolt member that is screwed so as to pass through the guide portion, and is supported by the movable member at one end thereof, and the bolt member is screwed so that the one end side is removed from the guide portion. By projecting, the movable member is moved in a direction in which the liner plate is brought close to the sliding portion,
The second adjustment portion includes a nut member screwed to the other end of the bolt member, and the nut member is tightened toward one end of the bolt member to relatively move the other end side to the guide portion. And the movable member is moved in a direction away from the sliding portion.

請求項４に記載の発明は、請求項３に記載の摺動部クリアランス調整機構において、
前記摺動部において互いに直交する２面のそれぞれに向けて、前記ライナープレートを対向させるようにそれぞれ配された二つの前記可動部材と、その可動部材に一端が支持された前記ボルト部材と、そのボルト部材の他端に螺着された前記ナット部材と、を備えたことを特徴とする。 The invention according to claim 4 is the sliding part clearance adjustment mechanism according to claim 3,
Two movable members respectively arranged so as to face the liner plate toward two mutually orthogonal surfaces in the sliding portion, the bolt member having one end supported by the movable member, And the nut member screwed to the other end of the bolt member.

本発明によれば、容易に摺動部のクリアランスを調整することができる摺動部クリアランス調整機構を得ることができる。 ADVANTAGE OF THE INVENTION According to this invention, the sliding part clearance adjustment mechanism which can adjust the clearance of a sliding part easily can be obtained.

杭圧入装置を示す側面図である。It is a side view which shows a pile press-fit apparatus. 杭圧入装置のサドルに摺動可能に備えられたスライドベースの摺動部における摺動部クリアランス調整機構を拡大して示す側面図（ａ）と、図２（ａ）のI−I線における断面図（ｂ）と、図２（ａ）のII−II線における断面図（ｃ）である。The side view (a) which expands and shows the sliding part clearance adjustment mechanism in the sliding part of the slide base with which the saddle of the pile press-fit apparatus was slidable, and the cross section in the II line of Fig.2 (a) It is sectional drawing (c) in the II-II line | wire of FIG.2 (b) and Fig.2 (a). 他の実施形態における摺動部クリアランス調整機構を拡大して示す側面図（ａ）と、図３（ａ）のIII−III線における断面図（ｂ）である。It is the side view (a) which expands and shows the sliding part clearance adjustment mechanism in other embodiment, and sectional drawing (b) in the III-III line of Fig.3 (a).

以下、図面を参照して、本発明に係る摺動部クリアランス調整機構の実施形態について詳細に説明する。
本実施形態では、杭圧入装置のサドルに摺動可能に備えられたスライドベースの摺動部における摺動部クリアランス調整機構を例に説明する。 Hereinafter, an embodiment of a sliding part clearance adjusting mechanism according to the present invention will be described in detail with reference to the drawings.
In this embodiment, a sliding part clearance adjustment mechanism in a sliding part of a slide base that is slidably provided on a saddle of a pile press-fitting device will be described as an example.

杭圧入装置１０は、図１に示すように、所定の杭Ｐ（例えば、鋼矢板など）を地中に圧入するパイル圧入機であり、既に地中に圧入された既設杭Ｐの上端側を掴んで支持する複数のクランプ装置１１…を備えたサドル１２と、サドル１２に対して前後動可能なスライドベース１３と、スライドベース１３上で左右に旋回可能なリーダマスト１４と、リーダマスト１４の前面に昇降可能に取り付けられたチャック装置１５と、リーダマスト１４に対してチャック装置１５を昇降駆動するメイン油圧シリンダ１６等を備えている。 As shown in FIG. 1, the pile press-in device 10 is a pile press-in machine for press-fitting a predetermined pile P (for example, a steel sheet pile) into the ground, and the upper end side of the existing pile P that has already been pressed into the ground. A saddle 12 having a plurality of clamping devices 11 to be held and supported, a slide base 13 that can move back and forth with respect to the saddle 12, a leader mast 14 that can turn left and right on the slide base 13, and a leader mast 14 A chuck device 15 is attached to the front face so as to be movable up and down, and a main hydraulic cylinder 16 that drives the chuck device 15 up and down with respect to the leader mast 14 is provided.

クランプ装置１１は、サドル１２の下面に設けられている。このクランプ装置１１は、例えば、先に圧入された既設の杭Ｐである鋼矢板の上端側を挟んだ状態で、図示しない油圧シリンダの駆動によりその鋼矢板の上端部を挟持して掴むことができる。つまり、クランプ装置１１は、既設杭Ｐを掴むことで杭圧入装置１０を既設杭Ｐの上端部に固定する固定手段として機能する。
特に、クランプ装置１１は、掴んで支持した既設杭Ｐから反力を取って、杭圧入装置１０が新たに杭Ｐを圧入することができるように、杭圧入装置１０を既設杭Ｐの上端部に固定し設置するようになっている。 The clamp device 11 is provided on the lower surface of the saddle 12. For example, the clamp device 11 can hold and grip the upper end portion of the steel sheet pile by driving a hydraulic cylinder (not shown) in a state where the upper end side of the steel sheet pile which is the existing pile P previously press-fitted is sandwiched. it can. That is, the clamp device 11 functions as a fixing unit that fixes the pile press-fitting device 10 to the upper end portion of the existing pile P by grasping the existing pile P.
In particular, the clamping device 11 takes the reaction force from the existing pile P that is held and supported, and the pile press-in device 10 can be pressed into the pile P so that the pile press-in device 10 can press-in the pile P anew. Fixed to be installed.

スライドベース１３は、前後方向に摺動可能にサドル１２に備えられている。
このスライドベース１３は、サドル１２に対し前方に移動してリーダマスト１４及びチャック装置１５を水平に前側に移動させることにより、サドル１２を移動することなく、先頭のクランプ装置１１が支持している既設杭Ｐの先に、新たな杭を順次圧入することを可能にする。
なお、サドル１２が摺動可能に支持しているスライドベース１３の摺動部１３ａや、その摺動部１３ａにおける摺動部クリアランス調整機構については後述する。 The slide base 13 is provided in the saddle 12 so as to be slidable in the front-rear direction.
The slide base 13 is moved forward with respect to the saddle 12, and the leader mast 14 and the chuck device 15 are horizontally moved forward, so that the leading clamp device 11 is supported without moving the saddle 12. It is possible to sequentially press-fit new piles ahead of the existing pile P.
In addition, the sliding part 13a of the slide base 13 which the saddle 12 supports so that sliding is possible, and the sliding part clearance adjustment mechanism in the sliding part 13a are mentioned later.

リーダマスト１４は、スライドベース１３に対し左右に旋回可能とされることにより、順次並んで圧入される杭の列の方向を直角に曲げたり、湾曲して曲げたりすることが可能となっている。
チャック装置１５は、その背面側がリーダマスト１４の前面側に昇降可能に嵌合した状態とされるとともに、リーダマスト１４とチャック装置１５に接続されたメイン油圧シリンダ１６により昇降駆動されるようになっている。 The leader mast 14 can be turned left and right with respect to the slide base 13 so that the direction of the rows of piles that are press-fitted in sequence can be bent at a right angle or bent. .
The chuck device 15 is in a state in which the back side thereof is fitted to the front side of the leader mast 14 so as to be movable up and down, and is driven up and down by a main hydraulic cylinder 16 connected to the leader mast 14 and the chuck device 15. ing.

そして、チャック装置１５が把持した杭Ｐを地中に圧入する際、チャック装置１５の昇降範囲は限られているので、杭Ｐを把持してチャック装置１５を下降させることと、杭Ｐを離してチャック装置１５を上昇させることを繰り返すようになっている。これにより、チャック装置１５が昇降する１ストローク分ずつ杭Ｐを圧入することが繰り返され、チャック装置１５の昇降範囲より深く杭Ｐを地中に圧入することが可能になっている。 And, when the pile P gripped by the chuck device 15 is press-fitted into the ground, the lifting range of the chuck device 15 is limited, so that the chuck device 15 is lowered by gripping the pile P and the pile P is released. Thus, the raising of the chuck device 15 is repeated. Thus, the press-in of the pile P is repeated for each stroke in which the chuck device 15 moves up and down, and the pile P can be pressed into the ground deeper than the lift range of the chuck device 15.

上記した杭圧入装置１０は、既設杭Ｐの先に新たな杭Ｐをチャック装置１５で圧入する動作と、クランプ装置１１による既設杭Ｐの上端部の把持と解除の動作と、サドル１２に対するスライドベース１３の前後動の動作と、を組み合わせることで、既設杭Ｐからなる杭列上を自走し移動することができる。
なお、杭圧入装置１０が杭列上を自走する動作は周知であるので、ここでは詳述しない。 The above-described pile press-fitting device 10 includes an operation of press-fitting a new pile P ahead of the existing pile P with the chuck device 15, an operation of grasping and releasing the upper end portion of the existing pile P by the clamp device 11, and a slide with respect to the saddle 12. By combining the forward and backward movement of the base 13, it is possible to self-run and move on the pile row composed of the existing piles P.
In addition, since the operation | movement which the pile press-fit apparatus 10 self-propels on a pile row is known, it does not elaborate on here.

次に、杭圧入装置１０のサドル１２に摺動可能に備えられたスライドベース１３の摺動部１３ａにおける摺動部クリアランス調整機構１００について説明する。 Next, the sliding part clearance adjustment mechanism 100 in the sliding part 13a of the slide base 13 slidably provided on the saddle 12 of the pile press-fitting device 10 will be described.

図２（ａ）（ｂ）（ｃ）に示すように、サドル１２の上部には、上方に突き出した縁部１２ｃを有する案内部１２ａが設けられており、その案内部１２ａに案内部の一部を成す可動部材２０が取り付けられている。また、スライドベース１３の左右両側には、側方に突き出した摺動部１３ａが設けられている。
このスライドベース１３の摺動部１３ａが、案内部としての可動部材２０とサドル１２の案内部１２ａとの間に介装されて、スライドベース１３がサドル１２に摺動可能に支持されている。 As shown in FIGS. 2A, 2B, and 2C, a guide portion 12a having an edge portion 12c protruding upward is provided on the upper portion of the saddle 12, and one guide portion 12a is provided on the guide portion 12a. A movable member 20 is attached. Further, on both the left and right sides of the slide base 13, there are provided sliding portions 13a protruding sideways.
The slide portion 13a of the slide base 13 is interposed between the movable member 20 as a guide portion and the guide portion 12a of the saddle 12, and the slide base 13 is slidably supported by the saddle 12.

可動部材２０は、案内部１２ａに移動可能に備えられており、案内部１２ａとともにスライドベース１３を摺動可能に支持する案内部としても機能する。
例えば、可動部材２０は、摺動部１３ａの上面と側面に対向するとともに互いに直交する２つの摺接面を有し、断面視略Ｌ字形状を呈する長尺なレール状の部材である。
この可動部材２０の２つの摺接面にそれぞれライナープレート１が取り付けられている。
また、可動部材２０には、第一調整部の第一ネジ部材２が配される貫通孔（ねじ穴）と、第二調整部の第二ネジ部材３が配される貫通孔（ねじ穴）が、それぞれ複数形成されている。
そして、この可動部材２０は、第一調整部（第一ネジ部材２）および第二調整部（第二ネジ部材３）の作用によってその配置を切り替えるように、案内部１２ａに移動可能に備えられている。 The movable member 20 is movably provided in the guide portion 12a, and also functions as a guide portion that slidably supports the slide base 13 together with the guide portion 12a.
For example, the movable member 20 is a long rail-shaped member that has two sliding contact surfaces that face the upper surface and the side surface of the sliding portion 13a and are orthogonal to each other, and has a substantially L shape in cross section.
The liner plate 1 is attached to each of the two sliding contact surfaces of the movable member 20.
Further, the movable member 20 has a through hole (screw hole) in which the first screw member 2 of the first adjustment part is disposed, and a through hole (screw hole) in which the second screw member 3 of the second adjustment part is disposed. Are formed in plural.
And this movable member 20 is provided in the guide part 12a so that a movement is possible so that the arrangement | positioning may be switched by the effect | action of a 1st adjustment part (1st screw member 2) and a 2nd adjustment part (2nd screw member 3). ing.

ライナープレート１は、例えば、金属製のプレート材料からなり、その厚さは任意であるが、２ｍｍ程度であることが好ましい。厚さ２ｍｍの金属製プレート材料であれば、材料費を抑え製品原価のコストダウンを図ることができる。また、ライナープレート１の厚さが２ｍｍであれば、可動部材２０の摺動面を保護する機能を十分に有するので、そのライナープレート１を好適に使用することができる。 The liner plate 1 is made of, for example, a metal plate material, and its thickness is arbitrary, but is preferably about 2 mm. If it is a metal plate material with a thickness of 2 mm, the material cost can be suppressed and the cost of the product can be reduced. Further, if the thickness of the liner plate 1 is 2 mm, the liner plate 1 can be suitably used because it has a sufficient function of protecting the sliding surface of the movable member 20.

第一ネジ部材２は、可動部材２０を介して案内部１２ａに螺合するよう、可動部材２０に形成された貫通孔を通じて案内部１２ａに螺合している。
この第一調整部としての第一ネジ部材２を案内部１２ａにねじ込むことで、少なくとも一方のライナープレート１を摺動部１３ａに近接させる方向に可動部材２０を移動させるように、可動部材２０の配置を切り替えることができる。
例えば、第一ネジ部材２を案内部１２ａにねじ込むことで、可動部材２０を下方に移動させる配置の切り替えを行い、摺動部１３ａの上面に対向しているライナープレート１を摺動部１３ａに近接させることができる。 The first screw member 2 is screwed to the guide portion 12a through a through hole formed in the movable member 20 so as to be screwed to the guide portion 12a via the movable member 20.
By screwing the first screw member 2 as the first adjusting portion into the guide portion 12a, the movable member 20 is moved so that the movable member 20 is moved in a direction in which at least one liner plate 1 is brought close to the sliding portion 13a. The arrangement can be switched.
For example, by screwing the first screw member 2 into the guide portion 12a, the arrangement of moving the movable member 20 downward is switched, and the liner plate 1 facing the upper surface of the sliding portion 13a is moved to the sliding portion 13a. Can be close.

第二ネジ部材３は、可動部材２０に出没可能に螺合している、例えば六角穴付きの止めネジであり、可動部材２０に形成された貫通孔に配設されている。
この第二調整部としての第二ネジ部材３をねじ回して案内部１２ａに向けて突き出すことで、可動部材２０を摺動部１２ａから離間させる方向に移動させるように、可動部材２０の配置を切り替えることができる。
例えば、第二ネジ部材３を可動部材２０の下面から突き出すようにねじ回すことで、案内部１２ａに突き当たった第二ネジ部材３が相対的に可動部材２０を上方に移動させる配置の切り替えを行い、摺動部１３ａの上面に対向しているライナープレート１を摺動部１３ａから離間させることができる。 The second screw member 3 is a set screw with a hexagonal hole, for example, which is screwed into the movable member 20 so as to be able to appear and retract, and is disposed in a through hole formed in the movable member 20.
By disposing the second screw member 3 as the second adjusting portion and projecting it toward the guide portion 12a, the movable member 20 is arranged so as to move the movable member 20 in a direction away from the sliding portion 12a. Can be switched.
For example, by turning the second screw member 3 so as to protrude from the lower surface of the movable member 20, the second screw member 3 that has struck the guide portion 12 a is switched to move the movable member 20 upward. The liner plate 1 facing the upper surface of the sliding portion 13a can be separated from the sliding portion 13a.

ここで、可動部材２０、第一ネジ部材２、第二ネジ部材３を備えている摺動部クリアランス調整機構１００による、摺動部１３ａとライナープレート１の間のクリアランスの調整方法について説明する。 Here, the adjustment method of the clearance between the sliding part 13a and the liner plate 1 by the sliding part clearance adjustment mechanism 100 provided with the movable member 20, the 1st screw member 2, and the 2nd screw member 3 is demonstrated.

例えば、ライナープレート１を交換する可動部材２０のオーバーホールを行い、可動部材２０の摺動面に新たなライナープレート１を貼付した後、第一ネジ部材２によって可動部材２０を案内部１２ａに取り付ける。
その際、スライドベース１３が好適に摺動できるように、摺動部１３ａの上面とライナープレート１の間のクリアランスを調整しつつ、第一ネジ部材２を案内部１２ａにねじ込み、可動部材２０を案内部１２ａに取り付ける。
なお、スライドベース１３が好適に摺動できる配置に可動部材２０を位置決めして取り付けることができるように、予め可動部材２０の下面から第二ネジ部材３を所定量突き出しておくようにしてもよい。こうすることによって、第一ネジ部材２を締め付け過ぎて、可動部材２０（ライナープレート１）を摺動部１３ａに圧接してしまうことなく、可動部材２０を好適な配置に取り付けることができる。 For example, the movable member 20 that replaces the liner plate 1 is overhauled, a new liner plate 1 is attached to the sliding surface of the movable member 20, and then the movable member 20 is attached to the guide portion 12 a by the first screw member 2.
At that time, the first screw member 2 is screwed into the guide portion 12a while adjusting the clearance between the upper surface of the sliding portion 13a and the liner plate 1 so that the slide base 13 can slide appropriately, and the movable member 20 is moved. It attaches to the guide part 12a.
The second screw member 3 may be protruded in advance from the lower surface of the movable member 20 in advance so that the movable member 20 can be positioned and attached in an arrangement in which the slide base 13 can be suitably slid. . By doing so, the movable member 20 can be attached to a suitable arrangement without overtightening the first screw member 2 and pressing the movable member 20 (liner plate 1) against the sliding portion 13a.

次いで、杭圧入装置１０を稼動させた時間の経過に伴いライナープレート１が摩耗し、摺動部１３ａの上面とライナープレート１の間のクリアランスが大きくなった場合、第一ネジ部材２を案内部１２ａにねじ込むことで、摺動部１３ａの上面にライナープレート１を近接させるように可動部材２０を下方に移動させて、摺動部１３ａの上面とライナープレート１の間のクリアランスを調整する。
さらに、摺動部１３ａとライナープレート１を近接させ過ぎた場合など、クリアランスの微調整として、第二ネジ部材３を可動部材２０の下面から突き出すようにねじ回して、第二ネジ部材３を案内部１２ａに突き当てて相対的に可動部材２０を上方に移動させる配置の切り替えを行う。なお、可動部材２０は第一ネジ部材２によって案内部１２ａに取り付けられているため、その支持力に抗するように第二ネジ部材３をねじ回ししても、可動部材２０は僅かに上方にずれる程度である。つまり、第二ネジ部材３をねじ回しすることで可動部材２０を僅かに上方に移動させて、その可動部材２０の配置を微調整することができるので、摺動部１３ａとライナープレート１の間のクリアランスを微調整することができる。 Next, when the liner plate 1 is worn with the lapse of time for operating the pile press-fitting device 10 and the clearance between the upper surface of the sliding portion 13a and the liner plate 1 is increased, the first screw member 2 is guided to the guide portion. By screwing in 12a, the movable member 20 is moved downward so that the liner plate 1 is brought close to the upper surface of the sliding portion 13a, and the clearance between the upper surface of the sliding portion 13a and the liner plate 1 is adjusted.
Further, when the sliding portion 13a and the liner plate 1 are too close to each other, as a fine adjustment of the clearance, the second screw member 3 is guided by being screwed so as to protrude from the lower surface of the movable member 20. The arrangement is switched so that the movable member 20 is moved upward relative to the portion 12a. Since the movable member 20 is attached to the guide portion 12a by the first screw member 2, even if the second screw member 3 is screwed so as to resist the supporting force, the movable member 20 is slightly upward. It is the extent which shifts. In other words, by rotating the second screw member 3, the movable member 20 can be moved slightly upward to finely adjust the arrangement of the movable member 20, so that the space between the sliding portion 13 a and the liner plate 1 can be adjusted. The clearance can be finely adjusted.

また、摺動部１３ａとライナープレート１を近接させ過ぎた場合、一旦、第一ネジ部材２を緩めた後、第二ネジ部材３をねじ回して、可動部材２０の下面から第二ネジ部材３をクリアランス相当分突き出させ、再度第一ネジ部材２を締め込むようにして可動部材２０を好適な配置に取り付けるように、クリアランスを調整することもできる。 Further, when the sliding portion 13 a and the liner plate 1 are too close, the first screw member 2 is once loosened, and then the second screw member 3 is screwed to start the second screw member 3 from the lower surface of the movable member 20. The clearance can be adjusted so that the movable member 20 is mounted in a suitable arrangement by protruding the portion corresponding to the clearance and tightening the first screw member 2 again.

こうして第一ネジ部材２を案内部１２ａにねじ込み、ライナープレート１を摺動部１３ａに近接させる方向に可動部材２０の配置を切り替えることと、第二ネジ部材３をねじ回しして、可動部材２０の下面から第二ネジ部材３を突き出し、ライナープレート１を摺動部１３ａから離間させる方向に可動部材２０の配置を切り替えることによって、摺動部１３ａとライナープレート１の間のクリアランスを容易に調整することができる。 Thus, the first screw member 2 is screwed into the guide portion 12a, the arrangement of the movable member 20 is switched in the direction in which the liner plate 1 is brought close to the sliding portion 13a, and the second screw member 3 is screwed to move the movable member 20. The clearance between the sliding portion 13a and the liner plate 1 can be easily adjusted by projecting the second screw member 3 from the lower surface and switching the arrangement of the movable member 20 in the direction in which the liner plate 1 is separated from the sliding portion 13a. can do.

このように、可動部材２０と、第一ネジ部材２と、第二ネジ部材３とを備えている摺動部クリアランス調整機構１００は、第一ネジ部材２と第二ネジ部材３とによって可動部材２０の配置を切り替えて、摺動部１３ａとライナープレート１の間のクリアランスを容易に調整することができるので、摺動部１３ａとライナープレート１の間のクリアランスを所定範囲に保つようにこまめに調整することで、杭圧入装置１０は圧入施工を好適に行うことが可能になる。 As described above, the sliding part clearance adjusting mechanism 100 including the movable member 20, the first screw member 2, and the second screw member 3 includes the first screw member 2 and the second screw member 3. Since the clearance between the sliding portion 13a and the liner plate 1 can be easily adjusted by switching the arrangement of the 20s, the clearance between the sliding portion 13a and the liner plate 1 is frequently maintained so as to be within a predetermined range. By adjusting, the pile press-fitting device 10 can suitably perform the press-fitting work.

なお、本発明は上記実施形態に限られるものではない。
例えば、図３（ａ）（ｂ）に示すように、ライナープレート１が取り付けられた可動部材２１と、第一調整部としてのボルト部材４と、第二調整部としてのナット部材５とを備えた構成の摺動部クリアランス調整機構１０１であってもよい。
以下、摺動部クリアランス調整機構１０１について説明する。 The present invention is not limited to the above embodiment.
For example, as shown in FIGS. 3A and 3B, a movable member 21 to which the liner plate 1 is attached, a bolt member 4 as a first adjustment portion, and a nut member 5 as a second adjustment portion are provided. The sliding portion clearance adjusting mechanism 101 having the above-described configuration may be used.
Hereinafter, the sliding part clearance adjustment mechanism 101 will be described.

図３（ａ）（ｂ）に示すように、サドル１２の上部には、上方に突き出すとともに先端側を内側（スライドベース１３側）に向けて折曲した形状の案内部１２ｂが設けられている。また、スライドベース１３の左右両側には、側方に突き出した摺動部１３ａが設けられている。
このスライドベース１３の摺動部１３ａが、サドル１２の案内部１２ｂに滑合されて、スライドベース１３がサドル１２に摺動可能に支持されている。 As shown in FIGS. 3 (a) and 3 (b), the saddle 12 is provided at its upper portion with a guide portion 12b that protrudes upward and is bent toward the inner side (the slide base 13 side). . Further, on both the left and right sides of the slide base 13, there are provided sliding portions 13a protruding sideways.
The slide portion 13 a of the slide base 13 is slidably engaged with the guide portion 12 b of the saddle 12, and the slide base 13 is slidably supported by the saddle 12.

案内部１２ｂは、摺動部１３ａの上面に対向した配置の上面部１２ｄと、摺動部１３ａの側面に対向した配置の側面部１２ｅを有している。
この上面部１２ｄと側面部１２ｅにはそれぞれ、ボルト部材４が配される貫通孔（ねじ穴）が複数形成されている。そして、案内部１２ｂの上面部１２ｄと側面部１２ｅにそれぞれ、ボルト部材４、ナット部材５、ライナープレート１が取り付けられた可動部材２１が組み付けられるようになっている。
つまり、摺動部クリアランス調整機構１０１は、摺動部１３ａにおいて互いに直交する２面（上面と側面）のそれぞれに向けて、ライナープレート１を対向させるように配された可動部材２１を備え、各可動部材２１にその可動部材２１の配置を切り替えるためのボルト部材４とナット部材５とを備えた構成をとっている。 The guide portion 12b has an upper surface portion 12d arranged to face the upper surface of the sliding portion 13a and a side surface portion 12e arranged to face the side surface of the sliding portion 13a.
Each of the upper surface portion 12d and the side surface portion 12e is formed with a plurality of through holes (screw holes) in which the bolt members 4 are arranged. And the movable member 21 to which the bolt member 4, the nut member 5, and the liner plate 1 were attached is assembled | attached to the upper surface part 12d and the side part 12e of the guide part 12b, respectively.
That is, the sliding part clearance adjustment mechanism 101 includes the movable members 21 arranged to face the liner plate 1 toward two surfaces (upper surface and side surface) orthogonal to each other in the sliding part 13a. The movable member 21 is provided with a bolt member 4 and a nut member 5 for switching the arrangement of the movable member 21.

可動部材２１は、摺動部１３ａに対向する摺接面を有する板状の部材であり、その摺接面にライナープレート１が取り付けられている。
ライナープレート１は、例えば、金属製のプレート材料からなり、その厚さは任意であるが、２ｍｍ程度であることが好ましい。 The movable member 21 is a plate-like member having a sliding contact surface facing the sliding portion 13a, and the liner plate 1 is attached to the sliding contact surface.
The liner plate 1 is made of, for example, a metal plate material, and its thickness is arbitrary, but is preferably about 2 mm.

ボルト部材４は、案内部１２ｂを貫通するように螺合している、止めねじタイプのボルトである。
ボルト部材４の一端は、スライドベース１３（摺動部１３ａ）が滑合される側である案内部１２ｂの内面側に突き出るようになっており、そのボルト部材４の一端に可動部材２１が支持されている。例えば、可動部材２１に対しボルト部材４の一端は回転可能に軸着されており、ボルト部材４が可動部材２１に軸支されている。
このボルト部材４をねじ回して、ボルト部材４の一端側を案内部１２ｂから突き出すことで、可動部材２１と一体のライナープレート１を摺動部１３ａに近接させる方向に移動させるように、可動部材２１の配置を切り替えることができる。
例えば、ボルト部材４を案内部１２ｂにねじ込み、ボルト部材４の一端を案内部１２ｂの内面側から突き出すように可動部材２１を移動させて、摺動部１３ａの上面に対向しているライナープレート１を摺動部１３ａに近接させること、摺動部１３ａの側面に対向しているライナープレート１を摺動部１３ａに近接させることができる。 The bolt member 4 is a set screw type bolt that is screwed so as to penetrate the guide portion 12b.
One end of the bolt member 4 protrudes to the inner surface side of the guide portion 12b on which the slide base 13 (sliding portion 13a) is slid, and the movable member 21 is supported by one end of the bolt member 4. Has been. For example, one end of the bolt member 4 is rotatably attached to the movable member 21, and the bolt member 4 is pivotally supported by the movable member 21.
The bolt member 4 is screwed so that one end side of the bolt member 4 protrudes from the guide portion 12b, so that the liner plate 1 integrated with the movable member 21 is moved in the direction of approaching the sliding portion 13a. The arrangement of 21 can be switched.
For example, the bolt member 4 is screwed into the guide portion 12b, the movable member 21 is moved so that one end of the bolt member 4 protrudes from the inner surface side of the guide portion 12b, and the liner plate 1 facing the upper surface of the sliding portion 13a. Can be brought close to the sliding portion 13a, and the liner plate 1 facing the side surface of the sliding portion 13a can be brought close to the sliding portion 13a.

ナット部材５は、案内部１２ｂの外面側に突き出たボルト部材４の他端に螺着している。つまり、ナット部材５と可動部材２１は、案内部１２ｂを挟んでボルト部材４のそれぞれの端部に配設されている。
このナット部材５をボルト部材４の一端に向けて締め込むことで相対的にボルト部材４の他端側を案内部１２ｂから突き出させて、可動部材２１を摺動部１３ａから離間させる方向に移動させるように、可動部材２１の配置を切り替えることができる。
例えば、ナット部材５をボルト部材４の一端に向けて締め込み、相対的にボルト部材４の他端を案内部１２ｂの外面側から突き出させるように、ボルト部材４および可動部材２１を移動させて、摺動部１３ａの上面に対向しているライナープレート１を摺動部１３ａから離間させること、摺動部１３ａの側面に対向しているライナープレート１を摺動部１３ａから離間させることができる。 The nut member 5 is screwed to the other end of the bolt member 4 protruding to the outer surface side of the guide portion 12b. That is, the nut member 5 and the movable member 21 are disposed at each end of the bolt member 4 with the guide portion 12b interposed therebetween.
By tightening the nut member 5 toward one end of the bolt member 4, the other end side of the bolt member 4 is relatively protruded from the guide portion 12b, and the movable member 21 is moved away from the sliding portion 13a. As described above, the arrangement of the movable member 21 can be switched.
For example, the bolt member 4 and the movable member 21 are moved so that the nut member 5 is tightened toward one end of the bolt member 4 and the other end of the bolt member 4 is relatively protruded from the outer surface side of the guide portion 12b. The liner plate 1 facing the upper surface of the sliding portion 13a can be separated from the sliding portion 13a, and the liner plate 1 facing the side surface of the sliding portion 13a can be separated from the sliding portion 13a. .

ここで、可動部材２１、ボルト部材４、ナット部材５を備えている摺動部クリアランス調整機構１０１による、摺動部１３ａとライナープレート１の間のクリアランスの調整方法について説明する。 Here, the adjustment method of the clearance between the sliding part 13a and the liner plate 1 by the sliding part clearance adjustment mechanism 101 provided with the movable member 21, the bolt member 4, and the nut member 5 is demonstrated.

例えば、ライナープレート１を交換する可動部材２１のオーバーホールを行い、可動部材２１の摺動面に新たなライナープレート１を貼付した後、案内部１２ｂを貫通するように螺合したボルト部材４の一端にその可動部材２１を軸着するか、その一端に可動部材２１を回転可能に軸着したボルト部材４を案内部１２ｂの貫通孔に螺合させるか、何れかの手順に従って、ライナープレート１と一体の可動部材２１及びボルト部材４を案内部１２ｂに取り付ける。
また、案内部１２ｂの外面側に突き出たボルト部材４の他端にナット部材５を螺着する。
その際、スライドベース１３が好適に摺動できるように、摺動部１３ａの上面とライナープレート１の間のクリアランスと、摺動部１３ａの側面とライナープレート１の間のクリアランスを調整しつつ、ボルト部材４をねじ回して可動部材２１の配置を調整する。
なお、スライドベース１３が好適に摺動できる配置に可動部材２１を位置決めして取り付けることができるように、予めボルト部材４の他端の所定位置にナット部材５を螺着しておくようにしてもよい。こうすることによって、ボルト部材４をねじ回してナット部材５が案内部１２ｂの外面に当接したタイミングがボルト部材４の締め込みを止めるタイミングであるように設定することができ、ボルト部材４を締め付け過ぎて、可動部材２１（ライナープレート１）を摺動部１３ａに圧接してしまうことなく、可動部材２１を好適な配置に取り付けることができる。 For example, after overhauling the movable member 21 for exchanging the liner plate 1 and attaching a new liner plate 1 to the sliding surface of the movable member 21, one end of the bolt member 4 screwed so as to penetrate the guide portion 12b. Either the movable member 21 is axially attached to the bolt plate 4 or the bolt member 4 having the movable member 21 rotatably attached to one end thereof is screwed into the through hole of the guide portion 12b. The integral movable member 21 and the bolt member 4 are attached to the guide portion 12b.
Further, the nut member 5 is screwed to the other end of the bolt member 4 protruding to the outer surface side of the guide portion 12b.
At that time, while adjusting the clearance between the upper surface of the sliding portion 13a and the liner plate 1 and the clearance between the side surface of the sliding portion 13a and the liner plate 1 so that the slide base 13 can slide suitably, The arrangement of the movable member 21 is adjusted by screwing the bolt member 4.
In addition, the nut member 5 is screwed in advance at a predetermined position on the other end of the bolt member 4 so that the movable member 21 can be positioned and attached to an arrangement in which the slide base 13 can slide suitably. Also good. By doing so, the timing at which the bolt member 4 is screwed and the nut member 5 abuts against the outer surface of the guide portion 12b can be set so as to stop the tightening of the bolt member 4. It is possible to attach the movable member 21 to a suitable arrangement without over-tightening and pressing the movable member 21 (liner plate 1) against the sliding portion 13a.

次いで、杭圧入装置１０を稼動させた時間の経過に伴いライナープレート１が摩耗し、摺動部１３ａとライナープレート１の間のクリアランスが大きくなった場合、ボルト部材４をねじ回して、ボルト部材４の一端側に可動部材２１とともに配設されているライナープレート１を摺動部１３ａに近接させるように移動させて、摺動部１３ａの上面および側面とライナープレート１の間のクリアランスを調整する。
さらに、摺動部１３ａとライナープレート１を近接させ過ぎた場合など、クリアランスの微調整として、ボルト部材４の他端に螺着しているナット部材５をボルト部材４の一端に向けて締め込むことで相対的にボルト部材４の他端側を案内部１２ｂから突き出させるようにして、可動部材２１を摺動部１３ａから離間させる方向に移動させる配置の切り替えを行う。このナット部材５をボルト部材４の一端に向けて締め込むことで、可動部材２１の配置を微調整することができるので、摺動部１３ａとライナープレート１の間のクリアランスを微調整することができる。 Next, when the liner plate 1 is worn with the lapse of time when the pile press-fitting device 10 is operated and the clearance between the sliding portion 13a and the liner plate 1 is increased, the bolt member 4 is screwed and the bolt member 4, the liner plate 1 disposed together with the movable member 21 is moved so as to be close to the sliding portion 13 a, and the clearance between the upper surface and the side surface of the sliding portion 13 a and the liner plate 1 is adjusted. .
Further, when the sliding portion 13a and the liner plate 1 are too close to each other, the nut member 5 screwed to the other end of the bolt member 4 is tightened toward one end of the bolt member 4 as a fine adjustment of the clearance. Thus, the other end side of the bolt member 4 is relatively protruded from the guide portion 12b, and the arrangement of moving the movable member 21 in the direction away from the sliding portion 13a is switched. By tightening the nut member 5 toward one end of the bolt member 4, the arrangement of the movable member 21 can be finely adjusted. Therefore, the clearance between the sliding portion 13 a and the liner plate 1 can be finely adjusted. it can.

また、ライナープレート１が摩耗し、摺動部１３ａとライナープレート１の間のクリアランスが大きくなった場合、クリアランスが広がった分に相当する隙間を案内部１２ｂ外面とナット部材５の間につくるようにナット部材５の螺着位置を調整した後、ナット部材５が案内部１２ｂの外面に当接するまでボルト部材４をねじ回して、可動部材２１及びライナープレート１の配置を切り替えることで、クリアランスを調整することもできる。 Further, when the liner plate 1 is worn and the clearance between the sliding portion 13a and the liner plate 1 is increased, a gap corresponding to the increased clearance is formed between the outer surface of the guide portion 12b and the nut member 5. After adjusting the screwing position of the nut member 5, the bolt member 4 is screwed until the nut member 5 comes into contact with the outer surface of the guide portion 12 b, and the arrangement of the movable member 21 and the liner plate 1 is switched to thereby reduce the clearance. It can also be adjusted.

こうしてボルト部材４を案内部１２ｂにねじ込み、ライナープレート１を摺動部１３ａに近接させる方向に可動部材２１の配置を切り替えることと、ナット部材５をボルト部材４の一端に向けて締め込むことで相対的にボルト部材４をナット部材５側に引き寄せるように移動させて、ライナープレート１を摺動部１３ａから離間させる方向に可動部材２１の配置を切り替えることによって、摺動部１３ａとライナープレート１の間のクリアランスを容易に調整することができる Thus, the bolt member 4 is screwed into the guide portion 12b, the arrangement of the movable member 21 is switched in the direction in which the liner plate 1 is brought close to the sliding portion 13a, and the nut member 5 is tightened toward one end of the bolt member 4. By relatively moving the bolt member 4 toward the nut member 5 and switching the arrangement of the movable member 21 in the direction of separating the liner plate 1 from the sliding portion 13a, the sliding portion 13a and the liner plate 1 are switched. Can easily adjust the clearance between

このように、可動部材２１と、ボルト部材４と、ナット部材５とを備えている摺動部クリアランス調整機構１０１は、ボルト部材４とナット部材５とによって可動部材２１の配置を切り替えて、摺動部１３ａとライナープレート１の間のクリアランスを容易に調整することができるので、摺動部１３ａとライナープレート１の間のクリアランスを所定範囲に保つようにこまめに調整することで、杭圧入装置１０は圧入施工を好適に行うことが可能になる。
特に、この摺動部クリアランス調整機構１０１であれば、摺動部１３ａの上面とライナープレート１の間のクリアランスと、摺動部１３ａの側面とライナープレート１の間のクリアランスを、それぞれ調整することができるので、スライドベース１３がより一層良好に摺動するためのメンテナンスを可能にする。 Thus, the sliding part clearance adjustment mechanism 101 including the movable member 21, the bolt member 4, and the nut member 5 switches the arrangement of the movable member 21 by the bolt member 4 and the nut member 5, and slides. Since the clearance between the moving portion 13a and the liner plate 1 can be easily adjusted, the pile press-fitting device can be adjusted frequently so as to keep the clearance between the sliding portion 13a and the liner plate 1 within a predetermined range. No. 10 can suitably perform press-fitting construction.
In particular, with this sliding portion clearance adjustment mechanism 101, the clearance between the upper surface of the sliding portion 13a and the liner plate 1 and the clearance between the side surface of the sliding portion 13a and the liner plate 1 are adjusted. Therefore, it is possible to perform maintenance for the slide base 13 to slide more satisfactorily.

なお、本発明の適用は上述した実施形態に限定されることなく、本発明の趣旨を逸脱しない範囲で適宜変更可能である。 The application of the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention.

１ライナープレート
２第一ネジ部材（第一調整部）
３第二ネジ部材（第二調整部）
４ボルト部材（第一調整部）
５ナット部材（第二調整部）
１０杭圧入装置
１２サドル
１２ａ案内部
１２ｂ案内部
１３スライドベース
１３ａ摺動部
２０可動部材
２１可動部材
１００摺動部クリアランス調整機構
１０１摺動部クリアランス調整機構
Ｐ杭 1 Liner plate 2 First screw member (first adjustment part)
3 Second screw member (second adjustment part)
4 Bolt member (first adjustment part)
5 Nut member (second adjustment part)
DESCRIPTION OF SYMBOLS 10 Pile press-fit apparatus 12 Saddle 12a Guide part 12b Guide part 13 Slide base 13a Sliding part 20 Movable member 21 Movable member 100 Sliding part clearance adjustment mechanism 101 Sliding part clearance adjustment mechanism P Pile

Claims

A saddle provided with a plurality of clamping devices that grasp and support the upper end side of an existing pile already press-fitted into the ground, a slide base that can move back and forth with respect to the saddle, and a left and right pivot on the slide base In a pile press-fitting device comprising a leader mast and a chuck device attached to the front surface of the leader mast so as to be movable up and down, a sliding portion of the slide base, and a guide portion side for slidably guiding the sliding portion A sliding part clearance adjustment mechanism for adjusting a clearance between the liner plate and the liner plate ,
A movable member that is movably provided in the guide portion and to which the liner plate is attached;
A first adjustment unit that switches the arrangement of the movable member in a direction in which the liner plate is brought close to the sliding unit;
A second adjustment unit that switches the arrangement of the movable member in a direction away from the sliding unit;
With
A plurality of sets of the first adjustment part and the second adjustment part are provided along the sliding direction of the sliding part,
The arrangement pitch of the first adjustment unit and the second adjustment unit provided on the chuck device side is the arrangement pitch of the first adjustment unit and the second adjustment unit provided apart from the chuck device. A sliding part clearance adjustment mechanism characterized by being narrower than the pitch .

The movable member has two sliding contact surfaces that face the sliding portion and are orthogonal to each other, and the liner plate is attached to each sliding contact surface,
The first adjusting portion includes a first screw member screwed into the guide portion via the movable member, and the first screw member is screwed into the guide portion so that at least one liner plate is moved to the guide portion. Moving the movable member in a direction to approach the sliding portion;
The second adjustment unit includes a second screw member that is screwed into and out of the movable member, and the second screw member is screwed and protruded toward the guide unit, thereby moving the movable member to the guide unit. The sliding part clearance adjusting mechanism according to claim 1, wherein the sliding part clearance adjusting mechanism is moved in a direction away from the sliding part.

The movable member has a sliding contact surface facing the sliding portion, and the liner plate is attached to the sliding contact surface,
The first adjusting portion includes a bolt member that is screwed so as to pass through the guide portion, and is supported by the movable member at one end thereof, and the bolt member is screwed so that the one end side is removed from the guide portion. By projecting, the movable member is moved in a direction in which the liner plate is brought close to the sliding portion,
The second adjustment portion includes a nut member screwed to the other end of the bolt member, and the nut member is tightened toward one end of the bolt member to relatively move the other end side to the guide portion. The sliding part clearance adjusting mechanism according to claim 1, wherein the sliding part clearance adjusting mechanism is protruded from the sliding part to move the movable member away from the sliding part.

Two movable members respectively arranged so as to face the liner plate toward two mutually orthogonal surfaces in the sliding portion, the bolt member having one end supported by the movable member, The sliding part clearance adjustment mechanism according to claim 3, further comprising the nut member screwed to the other end of the bolt member.