JPH10265183A - Suspension lowering device - Google Patents
Suspension lowering deviceInfo
- Publication number
- JPH10265183A JPH10265183A JP7574097A JP7574097A JPH10265183A JP H10265183 A JPH10265183 A JP H10265183A JP 7574097 A JP7574097 A JP 7574097A JP 7574097 A JP7574097 A JP 7574097A JP H10265183 A JPH10265183 A JP H10265183A
- Authority
- JP
- Japan
- Prior art keywords
- gripper
- engagement piece
- engagement
- upper gripper
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Load-Engaging Elements For Cranes (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、重量物を安定して
吊り降ろすことのできる吊降し装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension device capable of hanging a heavy object stably.
【0002】[0002]
【従来の技術】従来から、クレーンでは吊り上げ困難な
重量物の吊上げ装置として、あるいはケーソン等の地下
構造物を地盤に圧入するための圧入装置として、図9に
示すジャッキ装置が使用されている。2. Description of the Related Art Conventionally, a jack device as shown in FIG. 9 has been used as a device for lifting heavy objects which are difficult to lift with a crane or as a press-fitting device for press-fitting an underground structure such as a caisson into the ground.
【0003】このジャッキ装置は、センターホール式と
呼ばれるもので、ベース(1)に固定したシリンダ
(2)(例えば油圧シリンダ)、同じくベースに固定し
た下グリッパ(3)、およびシリンダ(2)に駆動され
て昇降する上グリッパ(4)を有するジャッキ(5)
と、シリンダ (2)の中心部に上下に移動可能となる
よう挿通した鋼製のグリッパロッド(6)と、両グリッ
パ(3)(4)に装備された係合片(7)(9)をそれ
ぞれ内径側に弾性的に付勢する付勢部材(図示せず)と
で構成される。This jack device is called a center hole type, and includes a cylinder (2) (for example, a hydraulic cylinder) fixed to a base (1), a lower gripper (3) also fixed to a base, and a cylinder (2). Jack (5) with upper gripper (4) to be driven and raised and lowered
And a steel gripper rod (6) inserted in the center of the cylinder (2) so as to be movable up and down, and engagement pieces (7) (9) mounted on both grippers (3) and (4). And an urging member (not shown) for elastically urging each of them toward the inner diameter side.
【0004】グリッパロッド(6)は、軸方向の複数箇
所に膨出部(11)を設けたもので、各膨出部(11)に
は、その上部に下方を徐々に拡径させたテーパ状の案内
面(12)が形成され、その下端に両グリッパ(3)
(4)の係合片(7)(9)と係合する半径方向の平坦
な係合面(13)が形成されている。各膨出部(11)の案
内面(12)と係合面(13)との間には円筒状の大径部
(14)が形成され、案内面(12)とその上段の膨出部
(11)の係合面(13)との間には、同じく円筒状の小径
部(15)が形成されている。The gripper rod (6) is provided with bulges (11) at a plurality of positions in the axial direction. Each bulge (11) has a taper whose upper part is gradually enlarged downward. Guide surface (12) is formed, and both grippers (3) are formed at the lower end thereof.
A flat engagement surface (13) in the radial direction for engagement with the engagement pieces (7) and (9) of (4) is formed. A cylindrical large-diameter portion (14) is formed between the guide surface (12) and the engagement surface (13) of each bulge (11), and the guide surface (12) and the upper bulge are formed. Between the engagement surface (13) of (11) and the cylindrical small diameter portion (15) is also formed.
【0005】図9(a)に示すように、上グリッパ
(4)の係合片(9)をグリッパロッド(6)の係合面
(13)に係合させ、上グリッパ(4)でグリッパロッド
(6)を支持した状態で、シリンダ(2)の油室(16)
に作動油を供給すると、ピストン(17)の上昇によって
上グリッパ(4)が上昇し、上グリッパ(4)に係止さ
れたグリッパロッド(6)も上昇する。この時には、下
グリッパ(3)は案内面(12)によって外径側に押し広
げられて大径部(14)上を滑る。(b)図に示すよう
に、ピストン(17)が上側のストロークエンド(上限)
に達すると、下グリッパ(3)が小径部(15)と対向
し、これと同時に下グリッパ(3)の係合片(7)が付
勢部材の付勢力により内径側に弾性復帰する。これによ
り、当該係合片(7)がグリッパロッド(6)の係合面
(13)と係合し、(c)図に示すようにグリッパロッド
(6)が下グリッパ(3)に支持される。この状態で油
室(16)の作動油を排出してピストン(17)を降下させ
ると、グリッパロッド(6)は下グリッパ(3)で係止
されているために静止位置にあるが、上グリッパ(4)
はピストン(17)の降下に伴って降下し、案内面(12)
で外径側に押し広げられた後、大径部(14)上を滑る。
(d)図に示すように、ピストン(17)が下側のストロ
ークエンド(下限)に達すると、上グリッパ(4)が小
径部(15)に対向してその係合片(9)が内径側に弾性
復帰し、グリッパロッド(6)が上グリッパ(4)に係
止される。以後、これを繰り返せば、グリッパロッド
(6)を1ピッチ(隣接する係合面(13)間の距離)ず
つ間欠的に上昇させることが可能となる。As shown in FIG. 9 (a), an engaging piece (9) of an upper gripper (4) is engaged with an engaging surface (13) of a gripper rod (6), and the upper gripper (4) is used to hold the gripper. With the rod (6) supported, the cylinder (2) oil chamber (16)
When the hydraulic oil is supplied to the upper gripper (4), the upper gripper (4) rises due to the rise of the piston (17), and the gripper rod (6) locked by the upper gripper (4) also rises. At this time, the lower gripper (3) is pushed outward by the guide surface (12) and slides on the large-diameter portion (14). (B) As shown in the figure, the piston (17) is at the upper stroke end (upper limit).
Is reached, the lower gripper (3) faces the small diameter portion (15), and at the same time, the engagement piece (7) of the lower gripper (3) elastically returns to the inner diameter side by the urging force of the urging member. Thereby, the engaging piece (7) engages with the engaging surface (13) of the gripper rod (6), and the gripper rod (6) is supported by the lower gripper (3) as shown in FIG. You. In this state, when the hydraulic oil in the oil chamber (16) is discharged and the piston (17) is lowered, the gripper rod (6) is in the stationary position because it is locked by the lower gripper (3). Gripper (4)
Descends as the piston (17) descends, and the guideway (12)
After being pushed to the outer diameter side with, slide on the large diameter part (14).
(D) As shown in the figure, when the piston (17) reaches the lower stroke end (lower limit), the upper gripper (4) faces the small-diameter portion (15), and the engagement piece (9) has an inner diameter. The gripper rod (6) is elastically returned to the side, and the gripper rod (6) is locked to the upper gripper (4). Thereafter, by repeating this, it becomes possible to intermittently raise the gripper rod (6) by one pitch (the distance between the adjacent engaging surfaces (13)).
【0006】このジャッキ装置において、ベース(1)
を適当な支持桁で支持すれば、グリッパロッド(6)の
下端に吊り下げた重量物を吊り上げることが可能とな
る。また、グリッパロッド(6)の下端を地中深くに埋
設したアンカーに連結すれば、グリッパロッド(6)を
押し上げる際の反作用により、ベース(1)の下方に配
置したケーソン等の地下構造物を下方に押圧し、地盤に
圧入することができる。In this jack device, the base (1)
Is supported by a suitable support girder, it is possible to lift a heavy object suspended at the lower end of the gripper rod (6). In addition, if the lower end of the gripper rod (6) is connected to an anchor buried deep in the ground, an underground structure such as a caisson arranged below the base (1) can be formed by a reaction when the gripper rod (6) is pushed up. It can be pressed down and pressed into the ground.
【0007】[0007]
【発明が解決しようとする課題】このように、従来のジ
ャッキ装置であれば、重量物の吊り上げは行うことがで
きる。この場合において、一度吊り上げた重量物を、同
じジャッキ装置を用いて所定位置まで吊り降ろすことが
できれば便利である。As described above, a conventional jack device can lift a heavy object. In this case, it is convenient if a heavy object once lifted can be hung to a predetermined position using the same jack device.
【0008】かかる吊降しに際しては、グリッパロッド
を降下させる必要があるが、そのままでは膨出部(11)
の係合面(13)と上下のグリッパ(4)(3)の係合片
(9)(7)とが干渉するため、グリッパロッド(6)
を降下させることができず、吊降しも不可能となる。[0008] In such a suspension, it is necessary to lower the gripper rod.
Of the gripper rod (6) because the engaging surface (13) of the upper and lower grippers (4) and (3) interfere with the engaging pieces (9) and (7).
Cannot be lowered, and suspension is impossible.
【0009】そこで、本発明は、簡単な機構で上記ジャ
ッキ装置をそのまま吊降し装置にも転用可能とすること
を目的とする。Accordingly, an object of the present invention is to allow the jack device to be suspended as it is and to be diverted to a device with a simple mechanism.
【0010】[0010]
【課題を解決するための手段】上記目的を達成すべく、
本発明装置は、ベースに固定されたシリンダ、同じくベ
ースに固定された下グリッパ、およびシリンダに駆動さ
れて昇降する上グリッパを有するジャッキと、前記シリ
ンダに上下動可能に挿通され、軸方向の複数箇所に、上
部に下方を徐々に拡径させた案内面が形成されると共
に、下部に上下のグリッパの係合片と係合可能の係合面
が形成された膨出部を有するグリッパーロッドとを備
え、上下のグリッパに装備された係合片を内径側に弾性
的に付勢しつつ、前記シリンダの往復移動に伴い、上下
のグリッパの係合片を択一的にグリッパーロッドの係合
面に係合させてグリッパーロッドをその軸方向に間欠移
動させるものであって、上グリッパの、その上限の直前
位置から当該上限に至るまでの上昇動を駆動力として、
下グリッパの係合片を付勢部材の付勢力に抗して係合位
置から退避させる下グリッパ開閉機構と、上グリッパ
の、その下限の直前位置から当該下限に至るまでの降下
動を駆動力として、上グリッパの係合片を付勢部材の付
勢力に抗して係合位置から退避させる上グリッパ開閉機
構とを具備するものである。In order to achieve the above object,
The device according to the present invention comprises a cylinder fixed to a base, a lower gripper also fixed to the base, and a jack having an upper gripper driven up and down by being driven by the cylinder. A gripper rod having a swelling portion formed with a guide surface whose lower part is gradually enlarged at an upper part and an engagement surface capable of engaging with an engagement piece of an upper and lower gripper at a lower part. With the reciprocating movement of the cylinder, the engaging pieces of the upper and lower grippers are selectively engaged with the gripper rods while elastically biasing the engaging pieces provided on the upper and lower grippers toward the inner diameter side. The gripper rod is intermittently moved in the axial direction by engaging with the surface, and ascending movement of the upper gripper from a position immediately before the upper limit to the upper limit as a driving force,
A lower gripper opening / closing mechanism for retracting the engagement piece of the lower gripper from the engagement position against the urging force of the urging member, and a driving force for lowering the upper gripper from a position immediately before the lower limit to the lower limit. And an upper gripper opening / closing mechanism for retracting the engagement piece of the upper gripper from the engagement position against the urging force of the urging member.
【0011】下グリッパ開閉機構は、上グリッパに追従
して昇降する第1の昇降部材と、上グリッパが上限とそ
の直前位置との間を移動する間に第1の昇降部材に追従
して昇降する受圧部と、受圧部の上昇動を下グリッパの
係合片に伝達して、当該係合片を係合位置から退避させ
る第1の伝達部材とで構成し、上グリッパ開閉機構は、
上グリッパと連動して昇降する第2の昇降部材と、上グ
リッパがその下限とその直前位置との間を移動する間に
第2の昇降部材の降下動を規制する規制部と、第2の昇
降部材の降下動が規制されている間の上グリッパの降下
動を上グリッパの係合片に伝達して、当該係合片を係合
位置から退避させる第2の伝達部材とで構成する。The lower gripper opening / closing mechanism includes a first elevating member that moves up and down following the upper gripper, and an elevating member that follows the first elevating member while the upper gripper moves between the upper limit and a position immediately before the upper member. The upper gripper opening and closing mechanism comprises: a first pressure transmitting portion that transmits the ascending movement of the pressure receiving portion to the engagement piece of the lower gripper, and retracts the engagement piece from the engagement position.
A second elevating member that moves up and down in conjunction with the upper gripper, a regulating unit that regulates a downward movement of the second elevating member while the upper gripper moves between its lower limit and a position immediately before the lower member, A second transmission member is configured to transmit the descending movement of the upper gripper to the engaging piece of the upper gripper while the descending movement of the elevating member is restricted, and to retreat the engaging piece from the engaging position.
【0012】第1の押圧部材から受圧部および第1の伝
達部材を経て下グリッパに至るまでの間、並びに、第2
の昇降部材から第2の伝達部材を経て上グリッパに至る
までの間にそれぞれ開閉タイミング調整用の弾性部材を
介在させるのがよい。[0012] From the first pressing member to the lower gripper via the pressure receiving portion and the first transmission member, and from the second pressing member to the lower gripper.
An elastic member for adjusting the opening / closing timing is preferably interposed between the lifting member and the upper gripper via the second transmission member.
【0013】第1の伝達部材、および第2の伝達部材の
それぞれに、両伝達部材のうち、グリッパ側の移動速度
を上グリッパの昇降速度よりも増大させる増速手段を介
在させておくが好ましい。It is preferable that speed increasing means for increasing the moving speed on the gripper side of the first transmitting member and the second transmitting member to be higher than the vertical speed of the upper gripper is interposed between the first transmitting member and the second transmitting member. .
【0014】増速手段としては、てこ機構又は歯車列で
構成することが考えられる。As the speed increasing means, a lever mechanism or a gear train may be used.
【0015】また、本発明装置は、ベースに固定された
シリンダ、同じくベースに固定された下グリッパ、およ
びシリンダに駆動されて昇降する上グリッパを有するジ
ャッキと、前記シリンダに上下動可能に挿通され、軸方
向の複数箇所に、上部に下方を徐々に拡径させた案内面
が形成されると共に、下部に上下のグリッパの係合片と
係合可能の係合面が形成された膨出部を有するグリッパ
ーロッドとを備え、前記シリンダの往復移動に伴い、上
下のグリッパの係合片を択一的にグリッパーロッドの係
合面に係合させてグリッパーロッドをその軸方向に間欠
移動させるものであって、下グリッパの係合片を外径側
に付勢する第1の付勢部材と、前記係合片と接触して当
該係合片を第1の付勢部材の付勢力に抗して内径側に弾
性的に押圧し、グリッパロッドの係合面と係合させる第
1の押圧部材と、上グリッパがその上限の直前位置から
当該上限に至るまでの上昇動を駆動力として、第1の押
圧部材を係合片から離反させる第1の駆動部材とを有す
る下グリッパ開閉機構と、上グリッパの係合片を外径側
に付勢する第2の付勢部材と、前記係合片と接触して当
該係合片を第2の付勢部材の付勢力に抗して内径側に弾
性的に押圧し、グリッパロッドの係合面と係合させる押
圧部材と、上グリッパがその下限の直前位置から当該下
限に至るまでの降下動を駆動力として、第2の押圧部材
を係合片から離反させる第2の駆動部材とを有する上グ
リッパ開閉機構とを具備するものである。The device of the present invention also includes a jack having a cylinder fixed to a base, a lower gripper also fixed to the base, and an upper gripper driven up and down by the cylinder, and is vertically movably inserted through the cylinder. A bulging portion formed with a guide surface whose diameter is gradually increased downward at an upper portion and an engagement surface capable of engaging with an engagement piece of an upper and lower gripper at a lower portion at a plurality of locations in the axial direction. A gripper rod having a gripper rod, wherein the gripper rod is intermittently moved in the axial direction by selectively engaging the engagement pieces of the upper and lower grippers with the engagement surface of the gripper rod as the cylinder reciprocates. A first urging member for urging the engagement piece of the lower gripper toward the outer diameter side, and contacting the engagement piece to resist the urging force of the first urging member. Elastically to the inner diameter side A first pressing member to be engaged with the engagement surface of the upper rod, and the upper gripper moving the first pressing member away from the engagement piece by using a rising movement from a position immediately before the upper limit to the upper limit as a driving force. A lower gripper opening / closing mechanism having a first drive member, a second biasing member for biasing the engagement piece of the upper gripper toward the outer diameter side, and A pressing member that elastically presses against the inner diameter side against the urging force of the urging member of No. 2 and engages with the engaging surface of the gripper rod; An upper gripper opening / closing mechanism having a second driving member for separating the second pressing member from the engagement piece using the downward movement as a driving force.
【0016】[0016]
【発明の実施の形態】以下、本発明の一実施形態を図1
乃至図9に基づいて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIGS.
【0017】本発明装置は、図9に示したジャッキ装置
と同構成のジャッキ(5)、およびグリッパロッド
(6)を具備すると共に、これらに下グリッパ開閉機構
(20)および上グリッパ開閉機構(21)を付加して構成
される。以下の説明では、従来のジャッキ装置(図9参
照)と同一の部材および要素には同一の参照番号を付
し、その説明を省略する。The device of the present invention includes a jack (5) and a gripper rod (6) having the same configuration as the jack device shown in FIG. 9, and further includes a lower gripper opening / closing mechanism (20) and an upper gripper opening / closing mechanism ( 21) is added. In the following description, the same members and elements as those of the conventional jack device (see FIG. 9) are denoted by the same reference numerals, and description thereof will be omitted.
【0018】図1に両グリッパ開閉機構(20)(21)の
概略構造を図示する。このうち、図面左側は下グリッパ
開閉機構(20)であり、図面右側が上グリッパ開閉機構
(21)である。FIG. 1 schematically shows the structure of both gripper opening / closing mechanisms (20) and (21). The left gripper opening / closing mechanism (20) is on the left side of the drawing, and the upper gripper opening / closing mechanism (21) is on the right of the drawing.
【0019】下グリッパ開閉機構(20)は、図1及び図
2に示すように、ピストン(図示せず)の上昇により、
上グリッパ(4)がその上昇過程において、上限(A)
の直前位置(B)に達してから上限(A)に至るまでの
上グリッパ(4)の上昇動を駆動力として、下グリッパ
(3)を付勢部材(39)の付勢力に抗してグリッパロッ
ド(6)の膨出部(11)との係合位置から退避させるも
のである。As shown in FIGS. 1 and 2, the lower gripper opening / closing mechanism (20) raises a piston (not shown).
The upper gripper (4) moves upward during the ascending process (A).
The lower gripper (3) is opposed to the urging force of the urging member (39) by using the upward movement of the upper gripper (4) from the position immediately before (B) to the upper limit (A) as the driving force. The gripper rod (6) is retracted from an engagement position with the bulging portion (11).
【0020】この下グリッパ開閉機構(20)は、軸方向
に伸縮可能の伸縮部材(23)と、伸縮部材(23)の下端
と下グリッパ(3)との間に配設した伝達ワイヤ(24)
とで構成される。The lower gripper opening / closing mechanism (20) includes a telescopic member (23) that can expand and contract in the axial direction, and a transmission wire (24) disposed between the lower end of the telescopic member (23) and the lower gripper (3). )
It is composed of
【0021】伸縮部材(23)は、中空円筒状の外側部材
(25)と、その内径部に挿入した内側部材(26)とから
なる二重管で構成される(3重管以上とすることも可能
である)。内側部材(26)は、その上端が上グリッパ
(4)に固定されており、上グリッパ(4)に追従して
昇降可能である。内側部材(26)の下端には、半径方向
に突出し、且つ外側部材(25)の内径部を軸方向に移動
自在のフランジ部(27)が取り付けられている。外側部
材(25)の上端部には、フランジ部(27)と軸方向で係
合可能の受圧部(29)が設けられており、この受圧部
(29)とフランジ部(27)とは、上グリッパ(4)がそ
の上限の直前位置(B)に達したところで係合するよう
な位置関係に配置されている(図1は係合する直前の状
態を示している)。外側部材(25)の軸方向長さは、上
グリッパ(4)が下限位置(D)に達してもフランジ部
(27)が外側部材(25)の下端壁(25a)に当接しない
よう、内側部材(26)の軸方向長さやシリンダ(2)の
ストローク等に応じて決定される。The telescopic member (23) is constituted by a double tube composed of a hollow cylindrical outer member (25) and an inner member (26) inserted into the inner diameter portion thereof (a triple tube or more). Is also possible). The upper end of the inner member (26) is fixed to the upper gripper (4), and is movable up and down following the upper gripper (4). At the lower end of the inner member (26), a flange portion (27) protruding in the radial direction and capable of moving the inner diameter portion of the outer member (25) in the axial direction is attached. At the upper end of the outer member (25), there is provided a pressure receiving portion (29) that is axially engageable with the flange portion (27). The pressure receiving portion (29) and the flange portion (27) The upper gripper (4) is arranged in a positional relationship such that it is engaged when it reaches the position (B) immediately before the upper limit (FIG. 1 shows a state immediately before the engagement). The axial length of the outer member (25) is such that the flange portion (27) does not abut against the lower end wall (25a) of the outer member (25) even when the upper gripper (4) reaches the lower limit position (D). It is determined according to the axial length of the inner member (26), the stroke of the cylinder (2), and the like.
【0022】外側部材(25)の下端部に接続された伝達
ワイヤ(24)は、滑車(30)によって水平に向きを変え
て下グリッパ(3)の係合片(7)に接続されている。
伝達ワイヤ(24)の途中には、開閉タイミング調整用の
弾性部材(31)が介装されている。The transmission wire (24) connected to the lower end of the outer member (25) is turned horizontally by a pulley (30) and connected to the engagement piece (7) of the lower gripper (3). .
An elastic member (31) for adjusting opening / closing timing is interposed in the middle of the transmission wire (24).
【0023】外側部材(25)は、ばね(32)を介して静
止側の部材、例えばシリンダケース(33)に固定した支
持部(34)上に支持される。このように外側部材(25)
をばね(32)で支持するのは、内側部材(26)の上昇時
にフランジ部(27)との間の摩擦によって外側部材(2
5)が追従上昇しないよう一定位置に保持するためであ
り、かかる機能を有する限り他の支持構造を使用しても
構わない。The outer member (25) is supported on a stationary member, for example, a support (34) fixed to a cylinder case (33) via a spring (32). Thus the outer member (25)
Is supported by the spring (32) because the friction between the inner member (26) and the flange portion (27) occurs when the inner member (26) is raised.
5) is to keep the fixed position so as not to follow up. Other supporting structures may be used as long as they have such a function.
【0024】図2に示すように、下グリッパ(3)は、
グリッパロッド(6)の係合面(13)と係合してこれを
下から支持する係合片(7)を具備する。係合片(7)
は、支持ブロック(36)(ベース(1)に固定されてい
る)の内径側に設けられた支持面(36a)上に載置さ
れ、その外径側の端面(7a)には滑車(37)を介して前
記伝達ワイヤ(24)の一端が連結されている。支持ブロ
ック(36)の支持面(36a)は、上方ほどグリッパロッ
ド(6)の軸心から離隔させたテーパ面状に形成されて
おり、係合片(7)はこの支持面(36a)に案内されて
内径側下方と外径側上方との間、すなわちグリッパロッ
ド(6)の係合面(13)と係合する係合位置(実線で示
す)と、係合位置から退避する退避位置(破線で示す)
との間でスライド移動する。係合片(7)の外径側の端
面(7a)と、これよりも外径側の支持ブロック(36)上
面に設けた突出部(36b)との間には、係合片(7)を
常時内径側に弾性的に付勢すべく、例えばコイルバネ等
からなる付勢部材(39)が圧縮状態で配設されている。As shown in FIG. 2, the lower gripper (3)
An engagement piece (7) is provided for engaging with the engagement surface (13) of the gripper rod (6) and supporting the same from below. Engagement piece (7)
Is mounted on a support surface (36a) provided on the inner diameter side of the support block (36) (fixed to the base (1)), and the pulley (37) is mounted on the outer diameter side end surface (7a). ) Is connected to one end of the transmission wire (24). The support surface (36a) of the support block (36) is formed in a tapered shape separated from the axis of the gripper rod (6) as it goes upward, and the engagement piece (7) is attached to the support surface (36a). An engagement position (indicated by a solid line) that is guided between the inner diameter side lower side and the outer diameter side upper side, that is, the engaging position (indicated by a solid line) engaging with the engaging surface (13) of the gripper rod (6), (Shown by broken lines)
Slide between and. The engaging piece (7) is provided between the outer end surface (7a) of the engaging piece (7) and the projection (36b) provided on the upper surface of the support block (36) on the outer diameter side. A biasing member (39) composed of, for example, a coil spring or the like is provided in a compressed state so as to constantly bias the inner side elastically.
【0025】係合片(7)は、通常はグリッパロッド
(6)の周囲の等配位置4個所に設けられるが(図面で
は2つのみを図示している)、その数は任意であり、1
〜3個所又は5個所以上に配置しても構わない。The engaging pieces (7) are usually provided at four equally-disposed positions around the gripper rod (6) (only two are shown in the drawing), but the number is arbitrary. 1
You may arrange | position to 3 places or 5 places or more.
【0026】上述の下グリッパ開閉機構(20)は、各係
合片(7)ごとに個別に設ける他、1個所にのみ設け、
伝達ワイヤ(24)を分岐させて各係合片(7)にそれぞ
れ接続するようにしてもよい。The above-mentioned lower gripper opening / closing mechanism (20) is provided separately for each engagement piece (7), and is provided only at one place.
The transmission wire (24) may be branched and connected to each of the engagement pieces (7).
【0027】以上の構成において、上グリッパ(4)が
上限直前位置(B)と上限位置(A)との間の区間以外
の区間にある場合は、外側部材(25)の上端に設けられ
た受圧部(29)と内側部材(26)のフランジ部(27)と
が離反した状態にある。この場合、両者間に押圧力は作
用しないので、下グリッパ(3)の係合片(7)が付勢
部材(39)の付勢力により内径側の係合位置に移動し、
グリッパロッド(6)の係合面(13)と係合してグリッ
パロッド(6)を係止する。In the above configuration, when the upper gripper (4) is located in a section other than the section between the position immediately before the upper limit (B) and the upper limit position (A), the upper gripper (4) is provided at the upper end of the outer member (25). The pressure receiving portion (29) and the flange portion (27) of the inner member (26) are in a separated state. In this case, since no pressing force acts between the two, the engagement piece (7) of the lower gripper (3) moves to the inner diameter side engagement position by the urging force of the urging member (39),
The gripper rod (6) is locked by engaging with the engagement surface (13) of the gripper rod (6).
【0028】一方、上グリッパ(4)が上限直前位置
(B)と上限位置(A)との間の区間を移動する間は、
前記受圧部(29)とフランジ部(27)とが係合し、上グ
リッパ(4)の上昇動により受圧部(29)がフランジ部
(27)から上方への押圧力を受けるため、外側部材(2
5)が上昇する。これに伴い、下グリッパ(3)の係合
片(7)に伝達ワイヤ(24)を介して外径側への牽引力
が作用するので、係合片(7)が支持ブロック(36)の
支持面(36a)上を滑って外径側に変位し、退避位置に
移動する。かかる退避状態は、上グリッパ(4)が上限
位置(A)に達した後、降下を開始した上グリッパ
(4)が上限直前位置(B)に戻るまで継続する。な
お、伝達ワイヤ(24)に設けた弾性部材(31)の弾性力
を調整することによって、下グリッパ(3)が係合位置
から退避するタイミング、および係合位置に復帰するタ
イミングを調整することができる。On the other hand, while the upper gripper (4) moves in the section between the position immediately before the upper limit (B) and the upper limit position (A),
The pressure receiving portion (29) and the flange portion (27) are engaged with each other, and the pressure receiving portion (29) receives a pressing force upward from the flange portion (27) by the upward movement of the upper gripper (4). (2
5) rise. Accordingly, a traction force acts on the engagement piece (7) of the lower gripper (3) to the outer diameter side via the transmission wire (24), so that the engagement piece (7) supports the support block (36). It slides on the surface (36a) and is displaced to the outer diameter side, and moves to the retreat position. This retreat state continues after the upper gripper (4) reaches the upper limit position (A) and returns to the position (B) immediately before the upper gripper (4) that started descending. By adjusting the elastic force of the elastic member (31) provided on the transmission wire (24), it is possible to adjust the timing at which the lower gripper (3) retracts from the engagement position and the timing at which the lower gripper (3) returns to the engagement position. Can be.
【0029】下グリッパ開閉機構(20)の構成は、図1
に示す構造に限定されず、少なくとも上グリッパ(4)
に追従して昇降する第1の昇降部材(41)と、上グリッ
パ(4)が上限(A)とその直前位置(B)との間を移
動する間に第1の昇降部材(41)から押圧力を受けて第
1の昇降部材(41)に追従して昇降する受圧部(29)
と、受圧部(29)の上昇動を下グリッパ(3)の係合片
(7)に伝達して、当該係合片(7)を係合位置から退
避させる第1の伝達部材(42)とを具備していれば足り
る。図1においては、伸縮部材(23)の内側部材(26)
が第1の昇降部材(41)に相当し、外側部材(25)およ
び伝達ワイヤ(24)が第1の伝達部材(42)に相当す
る。The structure of the lower gripper opening / closing mechanism (20) is shown in FIG.
Not limited to the structure shown in (1), but at least the upper gripper (4)
The first lifting member (41) that moves up and down following the movement of the first lifting member (41) while the upper gripper (4) moves between the upper limit (A) and the immediately preceding position (B). A pressure receiving part (29) that moves up and down following the first lifting member (41) under the pressing force
And a first transmission member (42) for transmitting the upward movement of the pressure receiving portion (29) to the engagement piece (7) of the lower gripper (3) and retracting the engagement piece (7) from the engagement position. It is sufficient to have In FIG. 1, the inner member (26) of the telescopic member (23)
Correspond to the first lifting member (41), and the outer member (25) and the transmission wire (24) correspond to the first transmission member (42).
【0030】また、図1では、開閉タイミング調整用の
弾性部材(31)を伝達ワイヤ(24)の途中に設けている
が、この弾性部材(31)は、図3に示すように、フラン
ジ部(27)と受圧部(29)との間(第1の昇降部材(4
1)と受圧部(29)の間)に設けてもよく、また、図示
は省略するが、外側部材(25)と伝達ワイヤ(24)の間
や伝達ワイヤ(24)と下グリッパ(3)の間に設けても
構わない。すなわち、弾性部材(31)は、第1の押圧部
材(41)から受圧部(29)および第1の伝達部材(42)
を経て下グリッパ(3)に至るまでの何れかの部位に設
けられていればよい。In FIG. 1, an elastic member (31) for adjusting the opening / closing timing is provided in the middle of the transmission wire (24), but this elastic member (31) is, as shown in FIG. (27) and the pressure receiving portion (29) (the first elevating member (4
1) and the pressure receiving portion (29)), and although not shown, between the outer member (25) and the transmission wire (24) or between the transmission wire (24) and the lower gripper (3). It may be provided between them. That is, the elastic member (31) is connected to the first pressing member (41) through the pressure receiving portion (29) and the first transmitting member (42).
And it may be provided at any part up to the lower gripper (3) through the above.
【0031】次に、上グリッパ開閉機構(21)は、図1
に示すように、上グリッパ(4)の、その下限位置
(D)の直前位置(C)に達してから下限位置(D)に
至るまでの降下動を駆動力として、上グリッパ(4)を
付勢部材(図示せず)の付勢力に抗してグリッパロッド
(6)の膨出部(11)との係合位置から退避させるもの
である。Next, the upper gripper opening / closing mechanism (21) is shown in FIG.
As shown in (2), the upper gripper (4) is moved downward from the position (C) immediately before the lower limit position (D) to the lower limit position (D) as the driving force, and the upper gripper (4) is driven. The gripper rod (6) is retracted from the engagement position with the bulging portion (11) against the urging force of the urging member (not shown).
【0032】上グリッパ(4)の外周部には、貫通孔
(45)が形成されており、この貫通孔(45)に上下動自
在に昇降ロッド(46)が挿通されている。昇降ロッド
(46)の上グリッパ(4)よりも上方には、円板状の突
出部(47)が固着されており、この突出部(47)に伝達
ワイヤ(49)の一端部が取り付けられている。突出部
(47)と上グリッパと(4)の間には、ばね等からなる
支承部材(50)が配置されており、昇降ロッド(46)は
上グリッパ(4)に対し、この支承部材(50)によって
上下方向に弾性変位可能に支持されている。A through hole (45) is formed in the outer peripheral portion of the upper gripper (4), and a vertically moving rod (46) is inserted into the through hole (45) so as to be vertically movable. A disc-shaped protrusion (47) is fixed above the upper gripper (4) of the lifting rod (46), and one end of a transmission wire (49) is attached to the protrusion (47). ing. A support member (50) made of a spring or the like is arranged between the protruding portion (47), the upper gripper, and (4), and the lifting rod (46) moves the support member (4) with respect to the upper gripper (4). 50) so that it can be elastically displaced vertically.
【0033】昇降ロッド(46)の下端には、円板状の係
止部(51)が設けられる。この係止部(51)は、上グリ
ッパ(4)がその下限の直前位置(C)に達したところ
でベース(1)の上面(52:規制部)に当接するような
位置関係に配置される。図面では、ベース(1)の上面
を規制部(52)とした場合を例示しているが、規制部
(52)は静止部材に設けられていれば足り、例えばシリ
ンダケース(33)からその側方に腕部を突出させ、この
腕部の係止部(51)との当接部分を規制部(52)として
も構わない。At the lower end of the lifting rod (46), a disk-shaped engaging portion (51) is provided. The locking portion (51) is arranged in such a positional relationship that the upper gripper (4) comes into contact with the upper surface (52: regulating portion) of the base (1) when the upper gripper (4) reaches the position (C) immediately before the lower limit. . In the drawings, the case where the upper surface of the base (1) is a regulating portion (52) is illustrated, but the regulating portion (52) only needs to be provided on a stationary member, for example, from the cylinder case (33) to the side thereof. The arm may protrude in the direction, and the contact portion of the arm with the locking portion (51) may be used as the restricting portion (52).
【0034】係止部(51)は、下端部をベース(1)に
固定した円筒状の案内部材(53)の内径部に挿入されて
いる。案内部材(53)は、係止部(51)を上下方向に案
内できる限り任意の構造とすることができ、図示のよう
な円筒状のものには限定されない。The locking portion (51) is inserted into the inner diameter of a cylindrical guide member (53) whose lower end is fixed to the base (1). The guide member (53) may have any structure as long as it can guide the locking portion (51) in the up-down direction, and is not limited to the cylindrical shape as shown.
【0035】伝達ワイヤ(49)は、突出部(47)から下
方に延びて上グリッパ(4)の係合片(図示省略)に接
続されている。上グリッパ(4)は、図2に示す下グリ
ッパ(3)と同様の構成であり(図示省略)、伝達ワイ
ヤ(49)の一端部は、付勢部材によって内径側に付勢さ
れた係合片(9)の外径側端面に接続されている。伝達
ワイヤ(49)の途中には、下グリッパ開閉機構(20)と
同様に開閉タイミング調整用の弾性部材(55)が介装さ
れている。The transmission wire (49) extends downward from the projection (47) and is connected to an engagement piece (not shown) of the upper gripper (4). The upper gripper (4) has the same configuration as the lower gripper (3) shown in FIG. 2 (not shown), and one end of the transmission wire (49) is engaged by the urging member toward the inner diameter side. The piece (9) is connected to the outer diameter end face. An elastic member (55) for opening / closing timing adjustment is interposed in the middle of the transmission wire (49), similarly to the lower gripper opening / closing mechanism (20).
【0036】以上の構成において、上グリッパ(4)が
下限直前位置(C)と下限位置(D)との間の区間を除
く区間にある場合は、昇降ロッド(46)は上グリッパ
(4)に連動して昇降する。この時、係止部(51)と規
制部(52)とが離反した状態にあるので、上グリッパ
(4)の係合片(9)は、付勢部材の付勢力によって内
径側に付勢され、グリッパロッド(6)の係合面(13)
と係合してグリッパロッド(6)を係止する。In the above configuration, when the upper gripper (4) is located in a section excluding the section between the position immediately before the lower limit (C) and the lower limit position (D), the lifting rod (46) is connected to the upper gripper (4). It moves up and down in conjunction with. At this time, the engaging portion (9) of the upper gripper (4) is urged toward the inner diameter side by the urging force of the urging member because the locking portion (51) and the restricting portion (52) are in the separated state. And the engagement surface (13) of the gripper rod (6)
To lock the gripper rod (6).
【0037】降下中の上グリッパ(4)が下限直前位置
(C)に達すると、係止部(51)が規制部(52)に当接
し、昇降ロッド(46)のそれ以上の降下が規制される。
従って、上グリッパ(4)が下限直前位置(C)から下
限位置(D)に移動するまでの間は、上グリッパ(4)
の降下に伴って伝達ワイヤ(49)が牽引され、上グリッ
パ(4)の係合片(9)が外径側に牽引されて退避位置
に移動する。かかる退避状態は、上グリッパ(4)が下
限位置(D)に達した後、上昇して下限直前位置(C)
に戻るまで継続する。この場合、伝達ワイヤ(49)に設
けた弾性部材(55)の弾性力を調整することによって、
下グリッパ(3)が係合位置から退避するタイミング、
および係合位置に復帰するタイミングを調整することが
できる。When the upper gripper (4) during the lowering reaches the position (C) just before the lower limit, the locking portion (51) comes into contact with the restricting portion (52), and further lowering of the lifting rod (46) is restricted. Is done.
Therefore, until the upper gripper (4) moves from the position immediately before the lower limit (C) to the lower limit position (D), the upper gripper (4)
The transmission wire (49) is towed by the descent, and the engagement piece (9) of the upper gripper (4) is pulled to the outer diameter side to move to the retracted position. In this retracted state, after the upper gripper (4) reaches the lower limit position (D), the upper gripper (4) rises to a position immediately before the lower limit (C).
Continue until returning to. In this case, by adjusting the elastic force of the elastic member (55) provided on the transmission wire (49),
Timing when the lower gripper (3) retracts from the engagement position;
And the timing of returning to the engagement position can be adjusted.
【0038】上グリッパ開閉機構(21)の構成は、図1
に示す構造に限定されず、少なくとも上グリッパ(4)
と連動して昇降する第2の昇降部材(56)と、上グリッ
パ(4)がその下限(D)とその直前位置(C)との間
を移動する間に第2の昇降部材(56)の降下動を規制す
る規制部(52)と、第2の昇降部材(56)の降下動が規
制されている間の上グリッパ(4)の降下動を上グリッ
パ(4)の係合片(9)に伝達して、当該係合片をグリ
ッパロッド(6)の膨出部(11)との係合位置から退避
させる第2の伝達部材(57)とで構成されていれば足り
る。図1においては、昇降ロッド(46)が第2の昇降部
材(56)に相当し、伝達ワイヤ(49)が第2の伝達部材
(57)に相当する。開閉タイミング調整用の弾性部材
(55)は、伝達ワイヤ(49)の途中だけでなく、伝達ワ
イヤ(49)の両端部と突出部(47)や上グリッパ(4)
との間に配設しても構わない。The structure of the upper gripper opening / closing mechanism (21) is shown in FIG.
Not limited to the structure shown in (1), but at least the upper gripper (4)
A second elevating member (56) that moves up and down in conjunction with the second elevating member (56) while the upper gripper (4) moves between its lower limit (D) and its immediately preceding position (C). The lowering movement of the upper gripper (4) while the lowering movement of the second elevating member (56) is restricted is controlled by the engaging portion (52) of the upper gripper (4). The second transmission member (57) that transmits the engagement piece to the bulging portion (11) of the gripper rod (6) and transmits the engagement piece to the bulging portion (11) suffices. In FIG. 1, the lifting rod (46) corresponds to the second lifting member (56), and the transmission wire (49) corresponds to the second transmission member (57). The elastic member (55) for adjusting the opening / closing timing is provided not only in the middle of the transmission wire (49), but also at both ends of the transmission wire (49) and the protrusion (47) and the upper gripper (4).
It may be arranged between them.
【0039】本発明装置を用いた吊降しは、以下の手順
で行われる。The suspension using the apparatus of the present invention is performed in the following procedure.
【0040】シリンダ(2)が上限位置(A)に接近し
(図9(b)参照)、上限直前位置(B)に達すると、
図1に示すように、フランジ部(27)と受圧部(29)が
係合する。引き続いてシリンダ(2)を上限位置(A)
まで上昇させると、外側部材(25)が上昇し、ワイヤ
(24)に引張られた下グリッパ(3)の係合片(7)が
外径側に移動して、当該係合片(7)とグリッパロッド
(6)との係合状態が解除される。この状態は、上グリ
ッパ(4)が上限位置(A)に達してから降下し、上限
直前位置(B)に戻るまで維持される。上限位置(A)
からシリンダ(2)を降下させると、上グリッパ(4)
によって係止されたグリッパロッド(6)も降下し始め
るが、上限直前位置(B)に達するまでは下グリッパ
(3)が開いているので、グリッパロッド(6)の降下
に伴って係合面(13)と下グリッパ(3)が干渉するこ
とはない。When the cylinder (2) approaches the upper limit position (A) (see FIG. 9B) and reaches the position immediately before the upper limit position (B),
As shown in FIG. 1, the flange portion (27) and the pressure receiving portion (29) are engaged. Then, move the cylinder (2) to the upper limit position (A).
Then, the outer member (25) is raised, and the engagement piece (7) of the lower gripper (3) pulled by the wire (24) moves to the outer diameter side, and the engagement piece (7) And the gripper rod (6) is released from engagement. This state is maintained until the upper gripper (4) descends after reaching the upper limit position (A) and returns to the position immediately before the upper limit (B). Upper limit position (A)
When the cylinder (2) is lowered from the upper gripper (4)
The gripper rod (6) locked by the gripper also starts to descend, but the lower gripper (3) is open until reaching the position immediately before the upper limit (B). (13) and the lower gripper (3) do not interfere.
【0041】上グリッパ(4)が上限直前位置(B)を
通過すると、フランジ部(27)と受圧部(29)が離反
し、これに伴って外側部材(25)が降下して下グリッパ
(3)が付勢部材(39)の付勢力により閉じようとす
る。この閉じようとする瞬間に、下グリッパ(3)の係
合片(7)がグリッパロッド(6)の大径部(14)に接
するように開閉タイミング調整用の弾性部材(31)の弾
性力を調整しておく。さらにシリンダ(2)を降下させ
ると、上グリッパ(4)の降下と連動してグリッパロッ
ド(6)も降下するが、下グリッパ(3)の係合片
(7)がグリッパロッド(6)の大径部(14)および案
内面(12)上を滑るため、グリッパロッド(6)の降下
が阻害されることもない。When the upper gripper (4) passes through the position immediately before the upper limit (B), the flange portion (27) and the pressure receiving portion (29) separate from each other, and accordingly, the outer member (25) descends to lower the lower gripper (25). 3) is about to be closed by the urging force of the urging member (39). At the moment of the closing, the elastic force of the elastic member (31) for opening / closing timing is adjusted so that the engagement piece (7) of the lower gripper (3) comes into contact with the large diameter portion (14) of the gripper rod (6). Is adjusted. When the cylinder (2) is further lowered, the gripper rod (6) also lowers in conjunction with the lowering of the upper gripper (4). Since it slides on the large diameter portion (14) and the guide surface (12), the descent of the gripper rod (6) is not hindered.
【0042】シリンダ(2)の降下中は、グリッパロッ
ド(6)は下グリッパ(3)に係止される(図9(c)
参照)。シリンダ(2)が下限直前位置(C)に達する
と、上グリッパ開閉機構(21)の係止部(51)が規制部
(52)と当接し、以後の昇降ロッド(46)の降下が規制
される。これにより伝達ワイヤ(49)の一端部が静止位
置に保持されるので、さらにシリンダ(2)を降下させ
れば、上グリッパ(4)の降下により伝達ワイヤ(49)
に牽引力が作用し、上グリッパ(4)の係合片(9)が
外径側に移動してグリッパロッド(6)との係合状態が
解除される。While the cylinder (2) is descending, the gripper rod (6) is locked by the lower gripper (3) (FIG. 9 (c)).
reference). When the cylinder (2) reaches the position immediately before the lower limit (C), the locking portion (51) of the upper gripper opening / closing mechanism (21) comes into contact with the restricting portion (52), and the subsequent lowering of the lifting rod (46) is restricted. Is done. As a result, one end of the transmission wire (49) is held at the rest position. If the cylinder (2) is further lowered, the transmission wire (49) is lowered by the lowering of the upper gripper (4).
A traction force acts on the upper gripper (4), and the engagement piece (9) of the upper gripper (4) moves to the outer diameter side, whereby the engagement state with the gripper rod (6) is released.
【0043】上グリッパ(4)が下限位置(D)に達し
た後、上昇して下限直前位置(C)に達するまでの間に
は、上グリッパ(4)の係合片(9)は付勢部材の付勢
力によって内径側に戻ろうとするが、ここで下グリッパ
(3)の場合と同様に、伝達ワイヤ(49)に介在させた
弾性部材(55)の弾性力を調整しておけば、当該係合片
(9)を大径部(14)と対向したところで内径側に弾性
復帰させることができる。After the upper gripper (4) reaches the lower limit position (D) and rises to the position immediately before the lower limit (C), the engaging piece (9) of the upper gripper (4) is attached. The biasing force of the biasing member attempts to return to the inner diameter side. Here, as in the case of the lower gripper (3), if the elastic force of the elastic member (55) interposed in the transmission wire (49) is adjusted. When the engaging piece (9) faces the large diameter portion (14), it can be elastically returned to the inner diameter side.
【0044】その後、上グリッパ(4)を上昇させる
と、グリッパロッド(6)は吊下げ荷重を下グリッパ
(3)で支持した状態で静止し、一方、上グリッパ
(4)はグリッパロッド(6)の大径部(14)および案
内面(12)を滑りながら上昇する(図9(d)参照)。Thereafter, when the upper gripper (4) is lifted, the gripper rod (6) stops while supporting the suspension load with the lower gripper (3), while the upper gripper (4) is moved to the gripper rod (6). 9) and rises while sliding on the large diameter portion (14) and the guide surface (12) (see FIG. 9D).
【0045】以上の手順により1サイクルが終了し、そ
の間にグリッパロッドがその1ピッチ分だけ降下する。
以後、これを繰り返すことにより、吊下げ物を間欠的に
降下させることが可能となる。One cycle is completed by the above procedure, during which the gripper rod descends by one pitch.
Thereafter, by repeating this, the suspended object can be intermittently lowered.
【0046】このように、本発明によれば、従来装置に
上下のグリッパの開閉機構(21)(20)を付加するだけ
で、吊降し装置にも転用できるので、ジャッキ装置の用
途を拡大することができる。また、上下のグリッパ
(4)(3)を他に専用の駆動装置を用いることなく、
シリンダ(2)の駆動力を利用して開閉させることがで
きるので、設備コストや運転コストが抑制される。な
お、以上の吊降し装置を吊り上げや圧入用として使用す
る場合には、各ワイヤ(24)(49)と上グリッパ(4)
とを非連結状態にするだけで簡単に対応できる。As described above, according to the present invention, it is possible to convert the conventional device to the hanging device simply by adding the opening and closing mechanisms (21) and (20) for the upper and lower grippers. can do. Also, the upper and lower grippers (4) and (3) can be used without using a dedicated driving device.
Since the cylinder can be opened and closed using the driving force of the cylinder (2), equipment costs and operation costs are suppressed. When the above-mentioned lifting device is used for lifting or press fitting, each wire (24) (49) and the upper gripper (4)
It can be easily dealt with simply by making the and the non-connected state.
【0047】ところで、図2にも示すように、一般に上
下のグリッパ(4)(3)の係合片(9)(7)と支持
ブロック(36)との接触面(支持面36a)はその角度を
鋭角とした傾斜面とされる。これはグリッパロッド
(6)には、吊上げ物等の大きな荷重が下向きに負荷さ
れるため、仮に接触面を水平面とするとこの荷重を受け
た係合片(7)(9)が吹き飛ぶおそれがあるからであ
る。As shown in FIG. 2, the contact surface (support surface 36a) between the engagement pieces (9) (7) of the upper and lower grippers (4) (3) and the support block (36) is generally the same. It is an inclined surface having an acute angle. This is because a large load such as a lifting object is applied downward on the gripper rod (6). Therefore, if the contact surface is a horizontal surface, the engagement pieces (7) and (9) receiving this load may blow off. Because.
【0048】しかし、このような傾斜面では、ワイヤ
(24)(49)による牽引距離に比べて係合片(7)
(9)の半径方向の移動距離が短くなるので、係合片
(7)(9)を十分にスライドさせることができず、上
下のグリッパ(4)(3)の円滑な開閉に支障を来すこ
とも考えられる。However, on such an inclined surface, the engagement piece (7) is larger than the tow distance by the wires (24) and (49).
Since the moving distance in the radial direction of (9) is short, the engaging pieces (7) and (9) cannot be sufficiently slid, which hinders the smooth opening and closing of the upper and lower grippers (4) and (3). It is also conceivable.
【0049】本発明では、図4および図5に示すよう
に、両開閉機構(20)(21)の伝達ワイヤ(24)(49)
のそれぞれに、伝達ワイヤ(24)(49)のうちグリッパ
側の移動速度を上グリッパ(4)の移動速度よりも増大
させる増速手段(60a)(60b)を介在させることとし
た。図4(a)に下グリッパ開閉機構(20)の増速手段
(60a)を示す。これは増速手段として、てこ機構(6
1)を用いたもので、伝達ワイヤ(24)の上グリッパ
(4)側(外側部材25側)を、支点(62)で揺動可能に
支持されたアーム(63)の短尺側端部(支点62からの距
離が短い方の端部)に連結すると共に、伝達ワイヤ(2
4)の下グリッパ(3)側を当該アーム(63)の長尺側
端部に連結したものである。このうち、(a)図は上グ
リップ(4)側のワイヤ(24)をコ字型の剛体(64)に
置換した場合であり、(b)図はそのままワイヤとした
場合の例である。かかる構成において、外側部材(25)
が上昇すると、アーム(63)が二点鎖線で示すように右
下がりとなるので、下グリッパ(3)側での伝達部材
(24)の移動距離を大きくすることができ、係合片
(7)を迅速に係合位置から退避させることができる。In the present invention, as shown in FIGS. 4 and 5, the transmission wires (24) (49) of the two opening / closing mechanisms (20) (21) are used.
The speed increasing means (60a) (60b) for increasing the moving speed on the gripper side of the transmission wires (24) and (49) higher than the moving speed of the upper gripper (4) is interposed in each of them. FIG. 4A shows the speed increasing means (60a) of the lower gripper opening / closing mechanism (20). This is a lever mechanism (6
1), wherein the upper side of the upper gripper (4) (the outer member 25 side) of the transmission wire (24) is supported by the fulcrum (62) so as to be swingable at the short side end ( Connected to the shorter end of the fulcrum 62) and the transmission wire (2
4) The lower gripper (3) side is connected to the long end of the arm (63). Among them, FIG. (A) shows an example in which the wire (24) on the upper grip (4) side is replaced by a U-shaped rigid body (64), and FIG. (B) shows an example in which the wire is used as it is. In such a configuration, the outer member (25)
Rises, the arm (63) falls to the right as shown by the two-dot chain line, so that the moving distance of the transmission member (24) on the lower gripper (3) side can be increased, and the engagement piece (7 ) Can be quickly retracted from the engagement position.
【0050】図5は、上グリッパ開閉機構(21)の増速
手段(60b)の一例である。この増速手段は、てこ機構
(61)を使用しており、伝達ワイヤ(49)の昇降ロッド
(46)側をアーム(63)の短尺側端部に連結すると共
に、上グリッパ(4)側を長尺側端部に連結している。FIG. 5 shows an example of the speed increasing means (60b) of the upper gripper opening / closing mechanism (21). This speed increasing means uses a lever mechanism (61) to connect the lifting rod (46) side of the transmission wire (49) to the short side end of the arm (63), and the upper gripper (4) side. Is connected to the long side end.
【0051】図6は増速手段(60a)(60b)として、
歯車機構(66)を用いた一例であり、(a)図は下グリ
ッパ開閉機構(20)の場合を、(b)図は上グリッパ開
閉機構(21)の場合を例示している。FIG. 6 shows the speed increasing means (60a) (60b)
This is an example in which a gear mechanism (66) is used. FIG. (A) illustrates the case of the lower gripper opening / closing mechanism (20), and FIG. (B) illustrates the case of the upper gripper opening / closing mechanism (21).
【0052】何れもグリッパ(3)(4)と外側部材
(25)や昇降ロッド(46)との間の相対的な昇降運動を
ラック(67)およびピニオン(68)を介して回転運動に
変換し、この回転運動を複数の歯車(69)(70)を用い
て増速し、ワイヤ(24)(49)を牽引するものである。In each case, the relative lifting movement between the grippers (3) and (4) and the outer member (25) and the lifting rod (46) is converted into a rotating movement via a rack (67) and a pinion (68). Then, the rotational movement is accelerated by using a plurality of gears (69) (70) to pull the wires (24) (49).
【0053】図7および図8に、吊降し装置の他の実施
形態を示す。この吊降し装置の下グリッパ開閉機構(2
0)は、図7に示すように、支持ブロック(36)上に配
置された係合片(7 )を外径側に引張る、例えば伸長状
態のばねからなる第1の付勢部材(72)と、前記係合片
(7)と上方から接触する第1の押圧部材(73)と、第
1の押圧部材(73)を下方に引張る、例えば伸長状態の
ばねからなる第1の弾性部材(74)とを具備する。第1
の弾性部材(74)と第1の付勢部材(72)の弾性力は、
第1の弾性部材(74)の方が大きくなるよう設定されて
おり、従って、係合片(7)は、通常は第1の押圧部材
(73)によって下方に押圧され、内径側に変位してグリ
ッパロッド(6)の係合面(13)と係合している。FIGS. 7 and 8 show another embodiment of the suspension device. The lower gripper opening / closing mechanism (2
As shown in FIG. 7, a first urging member (72) made of, for example, an extended spring pulls the engagement piece (7) disposed on the support block (36) to the outer diameter side, as shown in FIG. A first pressing member (73) that comes into contact with the engagement piece (7) from above, and a first elastic member (e.g., an extended state spring) that pulls the first pressing member (73) downward. 74). First
The elastic force of the elastic member (74) and the first urging member (72)
The first elastic member (74) is set to be larger, so that the engagement piece (7) is normally pressed downward by the first pressing member (73), and is displaced to the inner diameter side. And is engaged with the engagement surface (13) of the gripper rod (6).
【0054】第1の押圧部材(73)と上グリッパ(4)
との間には、図8に示すように、ロッド状の第1の駆動
部材(75)が配設される。第1の駆動部材 (75)の下
端は、第1の押圧部材(73)に固定され、その上端は上
グリッパ(4)を上下方向に移動可能に貫通している。
第1の駆動部材(75)の上端にはフランジ状の係合部
(76)が固定されており、この係合部(76)は上グリッ
パ(4)が上限(A)の直前位置(B)に達したところ
で、上グリッパ(4)の上面と係合する位置に配置され
る。First pressing member (73) and upper gripper (4)
As shown in FIG. 8, a rod-shaped first drive member (75) is disposed between the first drive member and the first drive member (75). The lower end of the first driving member (75) is fixed to the first pressing member (73), and the upper end thereof penetrates the upper gripper (4) movably in the vertical direction.
A flange-shaped engaging portion (76) is fixed to the upper end of the first driving member (75), and the upper gripper (4) has a position (B) immediately before the upper limit (A). ), It is arranged at a position where it engages with the upper surface of the upper gripper (4).
【0055】以上の構成から、上グリッパ(4)が上限
直前位置(B)に達する前には、第1の弾性部材(74)
の弾性力により、第1の押圧部材(73)が下方に引張ら
れるため、係合片(7)は支持ブロック(36)の支持面
(36a)に案内されて内径側の係合位置にある。上グリ
ッパ(4)が上限直前位置(B)に達すると、係合部
(76)が上グリッパ(4)の上面に係合するので、上グ
リッパ(4)に追従して第1の駆動部材(75)が上昇
し、さらに第1の押圧部材(73)が上昇する。これによ
り、係合片(7)が第1の付勢部材(72)の弾性力によ
り外径側に牽引されて退避位置に移動する。以上から図
1に示す下グリッパ開閉機構(20)と同様の機能を発揮
することができる。With the above arrangement, before the upper gripper (4) reaches the position immediately before the upper limit (B), the first elastic member (74).
Since the first pressing member (73) is pulled downward by the elastic force of (1), the engagement piece (7) is guided by the support surface (36a) of the support block (36) and is in the engagement position on the inner diameter side. . When the upper gripper (4) reaches the position immediately before the upper limit (B), the engaging portion (76) engages with the upper surface of the upper gripper (4), so that the first drive member follows the upper gripper (4). (75) rises, and further the first pressing member (73) rises. Thereby, the engagement piece (7) is pulled to the outer diameter side by the elastic force of the first urging member (72) and moves to the retracted position. From the above, the same function as the lower gripper opening / closing mechanism (20) shown in FIG. 1 can be exhibited.
【0056】上グリッパ開閉機構(21)は、図示は省略
するが、前記下グリッパ開閉機構と同様に、係合片
(9)を外径側に引張る第2の付勢部材と、係合片
(9)と上方から接触する第2の押圧部材(77)と、第
2の押圧部材(77)を下方に引張る第2の弾性部材とを
具備する。第2の押圧部材(77)の下面には、ロッド状
の第2の駆動部材(78)が装着されており、第2の駆動
部材(78)の下端には係合部(79)が装着されている。
係合部(79)は、上グリッパ(4)が下限(D )の直前
位置(C )に達した時にシリンダケース(33)に固定し
た支持部(80)と当接するような位置関係に配置され
る。以上の構成によっても、下限直前位置(C )から下
限(D)に至るまでの上グリッパ(4)の降下動を駆動
力として、係合片(9)を係合位置に出し入れすること
が可能となる。Although not shown, the upper gripper opening / closing mechanism (21) is, like the lower gripper opening / closing mechanism, a second biasing member for pulling the engagement piece (9) to the outer diameter side, and an engagement piece. A second pressing member (77) that comes into contact with (9) from above is provided, and a second elastic member that pulls the second pressing member (77) downward. A rod-shaped second driving member (78) is mounted on the lower surface of the second pressing member (77), and an engaging portion (79) is mounted on the lower end of the second driving member (78). Have been.
The engaging portion (79) is arranged in a positional relationship such that when the upper gripper (4) reaches the position (C) immediately before the lower limit (D), it comes into contact with the support portion (80) fixed to the cylinder case (33). Is done. With the above configuration, the engagement piece (9) can be moved into and out of the engagement position by using the downward movement of the upper gripper (4) from the position immediately before the lower limit (C) to the lower limit (D) as a driving force. Becomes
【0057】[0057]
【発明の効果】本発明によれば、従来装置に上下のグリ
ッパの開閉機構を付加するだけで、吊降し装置にも転用
できるので、ジャッキ装置の用途を拡大することができ
る。また、上下のグリッパを他に専用の駆動装置を用い
ることなく、シリンダの駆動力を利用して開閉させるこ
とができるので、製造コストや運転コストも安価に抑え
ることができる。According to the present invention, since the conventional apparatus can be diverted to a suspension apparatus only by adding a mechanism for opening and closing the upper and lower grippers, the use of the jack apparatus can be expanded. In addition, since the upper and lower grippers can be opened and closed using the driving force of the cylinder without using a dedicated driving device, the manufacturing cost and the operating cost can be reduced.
【図1】本発明にかかる吊降し装置の縦断面図である。FIG. 1 is a longitudinal sectional view of a suspension device according to the present invention.
【図2】下グリッパの拡大断面図である。FIG. 2 is an enlarged sectional view of a lower gripper.
【図3】本発明の他の実施形態を示す縦断面図である。FIG. 3 is a longitudinal sectional view showing another embodiment of the present invention.
【図4】下グリッパ開閉機構の増速手段(てこ機構)の
側面図である。FIG. 4 is a side view of a speed increasing means (lever mechanism) of the lower gripper opening / closing mechanism.
【図5】上グリッパ開閉機構の増速手段(てこ機構)の
側面一部断面図である。FIG. 5 is a partial side sectional view of a speed increasing means (lever mechanism) of the upper gripper opening / closing mechanism.
【図6】上下グリッパ開閉機構の増速手段(歯車機構)
の側面図である。FIG. 6 shows a speed increasing means (gear mechanism) of the vertical gripper opening / closing mechanism.
FIG.
【図7】下グリッパ開閉機構の他の実施形態を示す断面
図である。FIG. 7 is a sectional view showing another embodiment of the lower gripper opening / closing mechanism.
【図8】本発明の他の実施形態を示す側面一部断面図で
ある。FIG. 8 is a partial side sectional view showing another embodiment of the present invention.
【図9】吊上げ装置の吊上げ手順を示す断面図である。FIG. 9 is a sectional view showing a lifting procedure of the lifting device.
【符号の説明】 1 ベース 2 シリンダ 3 下グリッパ 4 上グリッパ 5 ジャッキ 7 係合片 9 係合片 20 下グリッパ開閉機構 21 上グリッパ開閉機構 26 第1の昇降部材 29 受圧部 31 弾性部材 42 第1の伝達部材 46 第2の昇降部材 49 第2の伝達部材 52 規制部 55 弾性部材 60a ・60b 増速手段 61 てこ機構 66 歯車機構 72 第1 の付勢部材 73 第1 の押圧部材 75 第1 の駆動部材[Description of Signs] 1 Base 2 Cylinder 3 Lower gripper 4 Upper gripper 5 Jack 7 Engagement piece 9 Engagement piece 20 Lower gripper opening and closing mechanism 21 Upper gripper opening and closing mechanism 26 First elevating member 29 Pressure receiving part 31 Elastic member 42 First Transmission member 46 second lifting member 49 second transmission member 52 regulating member 55 elastic member 60a / 60b speed increasing means 61 lever mechanism 66 gear mechanism 72 first biasing member 73 first pressing member 75 first Driving member
Claims (6)
ースに固定された下グリッパ、およびシリンダに駆動さ
れて昇降する上グリッパを有するジャッキと、前記シリ
ンダに上下動可能に挿通され、軸方向の複数箇所に、上
部に下方を徐々に拡径させた案内面が形成されると共
に、下部に上下のグリッパの係合片と係合可能の係合面
が形成された膨出部を有するグリッパーロッドとを備
え、上下のグリッパに装備された係合片を内径側に弾性
的に付勢しつつ、前記シリンダの往復移動に伴い、上下
のグリッパの係合片を択一的にグリッパーロッドの係合
面に係合させてグリッパーロッドをその軸方向に間欠移
動させるものであって、 上グリッパの、その上限の直前位置から当該上限に至る
までの上昇動を駆動力として、下グリッパの係合片を付
勢部材の付勢力に抗して係合位置から退避させる下グリ
ッパ開閉機構と、上グリッパの、その下限の直前位置か
ら当該下限に至るまでの降下動を駆動力として、上グリ
ッパの係合片を付勢部材の付勢力に抗して係合位置から
退避させる上グリッパ開閉機構とを具備する吊降し装
置。1. A jack having a cylinder fixed to a base, a lower gripper also fixed to the base, and an upper gripper driven up and down by being driven by the cylinder; A gripper rod having a swelling portion formed with a guide surface whose lower part is gradually enlarged at an upper part and an engagement surface capable of engaging with an engagement piece of an upper and lower gripper at a lower part. With the reciprocating movement of the cylinder, the engaging pieces of the upper and lower grippers are selectively engaged with the gripper rods while elastically biasing the engaging pieces provided on the upper and lower grippers toward the inner diameter side. The gripper rod is intermittently moved in the axial direction by engaging the upper gripper with the upper gripper from the position immediately before the upper limit to the upper limit as a driving force. To A lower gripper opening / closing mechanism for retracting from the engagement position against the urging force of the urging member, and an engagement piece of the upper gripper using a lowering movement of the upper gripper from a position immediately before the lower limit to the lower limit as a driving force. And an upper gripper opening / closing mechanism for retracting from the engagement position against the urging force of the urging member.
従して昇降する第1の昇降部材と、上グリッパが上限と
その直前位置との間を移動する間に第1の昇降部材に追
従して昇降する受圧部と、受圧部の上昇動を下グリッパ
の係合片に伝達して、当該係合片を係合位置から退避さ
せる第1の伝達部材とで構成され、 上グリッパ開閉機構が、上グリッパと連動して昇降する
第2の昇降部材と、上グリッパがその下限とその直前位
置との間を移動する間に第2の昇降部材の降下動を規制
する規制部と、第2の昇降部材の降下動が規制されてい
る間の上グリッパの降下動を上グリッパの係合片に伝達
して、当該係合片を係合位置から退避させる第2の伝達
部材とで構成されている請求項1記載の吊降し装置。A first lifting member that moves up and down following the upper gripper, and a first lifting member that moves while the upper gripper moves between an upper limit and a position immediately before the upper gripper. And a first transmission member for transmitting the upward movement of the pressure receiving portion to the engagement piece of the lower gripper and retracting the engagement piece from the engagement position. A second elevating member that moves up and down in conjunction with the upper gripper, a restricting portion that restricts the lowering movement of the second elevating member while the upper gripper moves between its lower limit and its position immediately before, And a second transmission member that transmits the downward movement of the upper gripper to the engagement piece of the upper gripper while the downward movement of the lifting member is restricted, and retracts the engagement piece from the engagement position. The suspension device according to claim 1, wherein
伝達部材を経て下グリッパに至るまでの間、並びに、第
2の昇降部材から第2の伝達部材を経て上グリッパに至
るまでの間にそれぞれ開閉タイミング調整用の弾性部材
を介在させたことを特徴とする請求項2記載の吊降し装
置。3. From the first pressing member to the lower gripper via the pressure receiving portion and the first transmitting member, and from the second elevating member to the upper gripper via the second transmitting member. 3. The suspension device according to claim 2, wherein an elastic member for adjusting the opening / closing timing is interposed between the suspension members.
のそれぞれに、両伝達部材のうち、グリッパ側の移動速
度を上グリッパの昇降速度よりも増大させる増速手段を
介在させたことを特徴とする請求項2又は3記載の吊降
し装置。4. A speed increasing means for increasing a moving speed on the gripper side of the first transmitting member and the second transmitting member to increase a moving speed on the gripper side more than an elevating speed of the upper gripper. The suspension device according to claim 2 or 3, wherein:
れている請求項4記載の吊降し装置。5. The suspension according to claim 4, wherein the speed increasing means is constituted by a lever mechanism or a gear train.
ースに固定された下グリッパ、およびシリンダに駆動さ
れて昇降する上グリッパを有するジャッキと、前記シリ
ンダに上下動可能に挿通され、軸方向の複数箇所に、上
部に下方を徐々に拡径させた案内面が形成されると共
に、下部に上下のグリッパの係合片と係合可能の係合面
が形成された膨出部を有するグリッパーロッドとを備
え、前記シリンダの往復移動に伴い、上下のグリッパの
係合片を択一的にグリッパーロッドの係合面に係合させ
てグリッパーロッドをその軸方向に間欠移動させるもの
であって、 下グリッパの係合片を外径側に付勢する第1の付勢部材
と、前記係合片と接触して当該係合片を第1の付勢部材
の付勢力に抗して内径側に弾性的に押圧し、グリッパロ
ッドの係合面と係合させる第1の押圧部材と、上グリッ
パがその上限の直前位置から当該上限に至るまでの上昇
動を駆動力として、第1の押圧部材を係合片から離反さ
せる第1の駆動部材とを有する下グリッパ開閉機構と、 上グリッパの係合片を外径側に付勢する第2の付勢部材
と、前記係合片と接触して当該係合片を第2の付勢部材
の付勢力に抗して内径側に弾性的に押圧し、グリッパロ
ッドの係合面と係合させる第2の押圧部材と、上グリッ
パがその下限の直前位置から当該下限に至るまでの降下
動を駆動力として、第2の押圧部材を係合片から離反さ
せる第2の駆動部材とを有する上グリッパ開閉機構とを
具備する吊降し装置。6. A jack having a cylinder fixed to a base, a lower gripper also fixed to the base, and an upper gripper driven up and down by being driven by the cylinder; A gripper rod having a swelling portion formed with a guide surface whose lower part is gradually enlarged at an upper part and an engagement surface capable of engaging with an engagement piece of an upper and lower gripper at a lower part. With the reciprocating movement of the cylinder, the engaging pieces of the upper and lower grippers are selectively engaged with the engaging surface of the gripper rod to intermittently move the gripper rod in its axial direction, A first urging member for urging the engagement piece of the gripper toward the outer diameter side, and contacting the engagement piece to move the engagement piece toward the inner diameter side against the urging force of the first urging member. Elastic pressing, gripper rod engagement And a first driving member for separating the first pressing member from the engagement piece by using the upward movement of the upper gripper from a position immediately before the upper limit to the upper limit as a driving force. A second biasing member for biasing the engagement piece of the upper gripper toward the outer diameter side, and a second biasing member that contacts the engagement piece and presses the engagement piece. A second pressing member that elastically presses against the inner diameter side against the urging force of the upper gripper and engages with the engagement surface of the gripper rod, and the lowering movement of the upper gripper from a position immediately before the lower limit to the lower limit. And a second drive member for separating the second pressing member from the engagement piece by using the upper gripper opening and closing mechanism as a driving force.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP07574097A JP3204625B2 (en) | 1997-03-27 | 1997-03-27 | Suspension device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP07574097A JP3204625B2 (en) | 1997-03-27 | 1997-03-27 | Suspension device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH10265183A true JPH10265183A (en) | 1998-10-06 |
JP3204625B2 JP3204625B2 (en) | 2001-09-04 |
Family
ID=13584988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP07574097A Expired - Lifetime JP3204625B2 (en) | 1997-03-27 | 1997-03-27 | Suspension device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3204625B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011230910A (en) * | 2010-04-30 | 2011-11-17 | Taihei Dengyo Kaisha Ltd | Wire jacking apparatus |
-
1997
- 1997-03-27 JP JP07574097A patent/JP3204625B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011230910A (en) * | 2010-04-30 | 2011-11-17 | Taihei Dengyo Kaisha Ltd | Wire jacking apparatus |
Also Published As
Publication number | Publication date |
---|---|
JP3204625B2 (en) | 2001-09-04 |
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