JP7103877B2

JP7103877B2 - Locknut loose fastening mechanism and loose fastening method

Info

Publication number: JP7103877B2
Application number: JP2018128306A
Authority: JP
Inventors: 真生工藤; 英晴木村; 宗佑坂之下; 竜彦原
Original assignee: Nippon Steel Texeng Co Ltd
Current assignee: Nippon Steel Texeng Co Ltd
Priority date: 2018-07-05
Filing date: 2018-07-05
Publication date: 2022-07-20
Anticipated expiration: 2038-07-05
Also published as: JP2020006389A

Description

本発明は、ロックナットの弛緩締結機構および弛緩締結方法に関する。 The present invention relates to a locknut loose fastening mechanism and a loose fastening method.

一般に、圧延ロール機において、ロールはチョックによって回転可能に支持され、チョックはハウジングやスタンドなどにより支持される。ロールなど、圧延ロール機の部材のメンテナンスのために、圧延ロール機の解体および組立が頻繁に行われている。 Generally, in a rolling roll machine, the roll is rotatably supported by a chock, and the chock is supported by a housing, a stand, or the like. Rolling rolls are frequently disassembled and assembled for maintenance of rolling roll machine members such as rolls.

たとえば、圧延ロール機の解体は、ロールに対して締結されるロックナットを緩め、その後チョックをロール軸から取り外すことにより行われる。逆に圧延ロール機の組立は、ロール軸にチョックを取り付けた後、ロックナットを締めることによって行われる。 For example, the dismantling of a rolling roll machine is performed by loosening the locknut fastened to the roll and then removing the chock from the roll shaft. Conversely, the rolling roll machine is assembled by attaching a chock to the roll shaft and then tightening the locknut.

このような圧延ロール機の解体および組立のうちロックナットの弛緩および締結作業は現在も人力で行われている。具体的には、ロックナットの外周に設けられた穴に鋼製の棒を差し込み、その棒に作業者が力を加えてロックナットを回転させることによりロックナットの弛緩および締結作業が行われている。 Of the disassembly and assembly of such rolling roll machines, the work of loosening and fastening the locknut is still performed manually. Specifically, a steel rod is inserted into a hole provided on the outer circumference of the locknut, and an operator applies force to the rod to rotate the locknut to loosen and fasten the locknut. There is.

また、ロックナットの弛緩および締結作業を人手によらずに行うロールチョックの着脱装置が特許文献１に開示されている。特許文献１の着脱装置は、ロールが載置される４か所の車輪と、車輪を回転させるモータとを有する大型の装置である。特許文献１の着脱装置を用いてロックナットの弛緩および締結作業を行う場合、固定用ワイヤによりロックナットを動かないように固定して、着脱装置の車輪を回転させる。これにより、ロックナットに対してロールを回転させ、このロールのロックナットに対する相対回転を利用して、ロックナットを弛緩および締結する。 Further, Patent Document 1 discloses a roll chock attachment / detachment device that allows the locknut to be loosened and fastened without manual operation. The attachment / detachment device of Patent Document 1 is a large-scale device having four wheels on which rolls are placed and a motor for rotating the wheels. When the locknut is loosened and fastened using the attachment / detachment device of Patent Document 1, the locknut is fixed by a fixing wire so as not to move, and the wheels of the attachment / detachment device are rotated. As a result, the roll is rotated with respect to the locknut, and the locknut is loosened and fastened by utilizing the relative rotation of the roll with respect to the locknut.

特開平９－３１４２０９号公報Japanese Unexamined Patent Publication No. 9-314209

上述したように、人力でのロックナットの弛緩および締結作業は、非常に大きな力が必要であり作業者の負荷が大きく、かつ、時間がかかる作業である。また、特許文献１のような装置を用いる場合は、大型の装置やロックナットを固定するためのワイヤが必要となり、設置場所の制約に加え、導入コストが非常に大きくなってしまう。また、ロックナットを固定するためにワイヤを用いた場合、装置の駆動時にロックナットからワイヤが外れてしまった場合には、装置近傍の作業者が怪我をする可能性もあり、安全性の問題からも好ましくない。 As described above, the work of manually loosening and fastening the locknut requires a very large force, which puts a heavy load on the operator and takes a long time. Further, when a device as in Patent Document 1 is used, a large device and a wire for fixing a locknut are required, which increases the introduction cost in addition to the restriction of the installation location. In addition, when a wire is used to fix the locknut, if the wire comes off from the locknut when driving the device, an operator near the device may be injured, which is a safety issue. It is also not preferable.

そこで、本発明はかかる問題点に鑑みて、既存の圧延ロール機の構成部品にほとんど手を加えることなく安価に導入が可能であり、かつ、大型の装置を用いる必要がない、ロール機に着脱可能なロックナットの弛緩締結機構、およびロックナットの弛緩締結方法を提供することを目的とする。 Therefore, in view of such a problem, the present invention can be introduced at low cost with almost no modification to the components of the existing rolling roll machine, and can be attached to and detached from the roll machine without using a large device. It is an object of the present invention to provide a loose locking mechanism for a locknut and a method for loosening and fastening a locknut.

本発明のロックナットの弛緩締結機構は、ロールを固定するためのロックナットに固定され、外周に歯部を有したリング状ギヤと、前記リング状ギヤが回転できるように、前記リング状ギヤの前記歯部と係合する噛合部を有する伝動部材と、前記伝動部材に接続され、前記伝動部材を駆動して前記リング状ギヤを回転させる駆動装置と、前記リング状ギヤの外周近傍において、前記ロールを回転可能に支持するロール機に固定され、前記伝動部材による前記リング状ギヤの回転時の反力を支持するように前記駆動装置を接続可能な反力受けとを備え、前記駆動装置を駆動することにより、前記伝動部材によって前記リング状ギヤを回転させ、前記リング状ギヤと固定された前記ロックナットを弛緩または締結させることを特徴とする。 The loosening fastening mechanism of the lock nut of the present invention is fixed to the lock nut for fixing the roll, and has a ring-shaped gear having teeth on the outer periphery and the ring-shaped gear so that the ring-shaped gear can rotate. A transmission member having a meshing portion that engages with the tooth portion, a drive device that is connected to the transmission member and drives the transmission member to rotate the ring-shaped gear, and a drive device in the vicinity of the outer periphery of the ring-shaped gear. The drive device is provided with a reaction force receiver that is fixed to a roll machine that rotatably supports the roll and can be connected to the drive device so as to support the reaction force of the transmission member during rotation of the ring-shaped gear. By driving, the transmission member rotates the ring-shaped gear, and the lock nut fixed to the ring-shaped gear is loosened or fastened.

また、上記弛緩締結機構は、前記伝動部材が歯車であり、前記駆動装置が、前記反力受けに接続される接続部と、前記伝動部材に連結され、前記接続部に対して回転する回転部とを有し、前記反力受けが、前記ロール機に固定される基部と、前記伝動部材による前記リング状ギヤの回転時の反力を受ける受け部とを有し、前記受け部は、前記接続部を挿通可能な、前記回転部の回転軸が延びる方向に貫通する貫通孔を有し、前記貫通孔の内面に、前記接続部の外周と前記回転軸回りに係合する係合部を有し、前記接続部は、前記ロックナットの弛緩または締結時の前記リング状ギヤの軸方向への移動に伴って、前記貫通孔に対して前記回転軸に沿って進退可能に前記受け部に接続されていることが好ましい。 Further, in the relaxation fastening mechanism, the transmission member is a gear, and the drive device is connected to a connection portion connected to the reaction force receiver and a rotating portion connected to the transmission member and rotates with respect to the connection portion. The reaction force receiver has a base portion fixed to the roll machine and a receiving portion that receives the reaction force when the ring-shaped gear is rotated by the transmission member, and the receiving portion has the above. It has a through hole through which the connecting portion can be inserted and penetrates in the direction in which the rotating shaft of the rotating portion extends, and an engaging portion that engages with the outer periphery of the connecting portion around the rotating shaft is provided on the inner surface of the through hole. The connecting portion is attached to the receiving portion so as to be able to move forward and backward along the rotation axis with respect to the through hole as the lock nut is loosened or the ring-shaped gear is moved in the axial direction at the time of fastening. It is preferable that they are connected.

また、上記弛緩締結機構は、前記受け部は、前記基部に対して、前記回転軸が延びる方向で位置調整可能に取り付けられていることが好ましい。 Further, in the relaxation fastening mechanism, it is preferable that the receiving portion is attached to the base portion so that the position can be adjusted in the direction in which the rotation axis extends.

また、上記弛緩締結機構は、前記反力受けが前記ロール機のチョックの端面に取り付けられ、前記基部が、前記チョックの端面に沿って延び、前記チョックの端面に設けられたボルトを挿通可能なボルト孔を有する板状体と、前記板状体に対して略垂直に延び、前記受け部を位置調整可能に案内する案内部とを有していることが好ましい。 Further, in the relaxation fastening mechanism, the reaction force receiver is attached to the end face of the chock of the roll machine, the base portion extends along the end face of the chock, and a bolt provided on the end face of the chock can be inserted. It is preferable to have a plate-shaped body having a bolt hole and a guide portion extending substantially perpendicular to the plate-shaped body to guide the receiving portion so that the position can be adjusted.

また、上記弛緩締結機構は、前記伝動部材が、軸方向に離間して配置された複数のギヤ部材から構成され、前記複数のギヤ部材の軸方向の離間距離が、前記リング状ギヤの厚さよりも小さく、前記ロックナットが締結状態から弛緩状態まで移動した際に、前記リング状ギヤが、前記複数のギヤ部材と係合を維持するように構成されていることが好ましい。 Further, in the relaxation fastening mechanism, the transmission member is composed of a plurality of gear members arranged apart from each other in the axial direction, and the axial separation distance of the plurality of gear members is larger than the thickness of the ring-shaped gear. It is also preferable that the ring-shaped gear is configured to maintain engagement with the plurality of gear members when the lock nut moves from the fastened state to the loosened state.

また、本発明のロックナットの弛緩締結方法は、ロールを固定するためのロックナットに、外周に歯部を有したリング状ギヤを固定する工程と、前記リング状ギヤの外周近傍において、前記ロールを回転可能に支持するロール機に反力受けを固定する工程と、前記反力受けに、前記リング状ギヤの前記歯部と係合する噛合部を有する伝動部材、および、前記伝動部材が接続され、前記伝動部材を駆動して前記リング状ギヤを回転させる駆動装置を接続する工程と、前記駆動装置を駆動して、前記伝動部材によって前記リング状ギヤを回転させ、前記リング状ギヤと固定された前記ロックナットを弛緩または締結させる駆動工程とを含むことを特徴とする。 Further, the loose fastening method of the lock nut of the present invention includes a step of fixing a ring-shaped gear having teeth on the outer periphery to the lock nut for fixing the roll, and the roll in the vicinity of the outer periphery of the ring-shaped gear. A step of fixing the reaction force receiver to a roll machine that rotatably supports the gear, a transmission member having a meshing portion that engages with the tooth portion of the ring-shaped gear, and the transmission member are connected to the reaction force receiver. A step of connecting a drive device that drives the transmission member to rotate the ring-shaped gear, and a step of driving the drive device to rotate the ring-shaped gear by the transmission member and fix the ring-shaped gear to the ring-shaped gear. It is characterized by including a driving step of loosening or fastening the lock nut.

また、上記弛緩締結方法において、前記伝動部材が歯車であり、前記駆動装置が、前記反力受けに接続される接続部と、前記伝動部材に連結され、前記接続部に対して回転する回転部とを有し、前記反力受けが、前記ロール機に固定される基部と、前記伝動部材による前記リング状ギヤの回転時の反力を受ける受け部とを有し、前記受け部は、前記接続部を挿通可能な、前記回転部の回転軸が延びる方向に貫通する貫通孔を有し、前記貫通孔の内面に、前記接続部の外周と前記回転軸回りに係合する係合部を有し、前記接続部は、前記ロックナットの弛緩または締結時の前記リング状ギヤの軸方向への移動に伴って、前記貫通孔に対して前記回転軸に沿って進退可能に前記受け部に接続されていることが好ましい。 Further, in the relaxation fastening method, the transmission member is a gear, and the drive device is connected to a connection portion connected to the reaction force receiver and a rotating portion connected to the transmission member and rotates with respect to the connection portion. The reaction force receiver has a base portion fixed to the roll machine and a receiving portion that receives the reaction force when the ring-shaped gear is rotated by the transmission member, and the receiving portion has the above. It has a through hole through which the connecting portion can be inserted and penetrates in the direction in which the rotating shaft of the rotating portion extends, and an engaging portion that engages with the outer periphery of the connecting portion around the rotating shaft is provided on the inner surface of the through hole. The connecting portion is attached to the receiving portion so as to be able to move forward and backward along the rotation axis with respect to the through hole as the lock nut is loosened or the ring-shaped gear is moved in the axial direction at the time of fastening. It is preferable that they are connected.

また、上記弛緩締結方法において、前記受け部は、前記基部に対して、前記回転軸が延びる方向で位置調整可能に取り付けられていることが好ましい。 Further, in the relaxation fastening method, it is preferable that the receiving portion is attached to the base portion so that the position can be adjusted in the direction in which the rotation shaft extends.

また、上記弛緩締結方法において、前記反力受けが前記ロール機のチョックの端面に取り付けられ、前記基部が、前記チョックの端面に沿って延び、前記チョックの端面に設けられたボルトを挿通可能なボルト孔を有する板状体と、前記板状体に対して略垂直に延び、前記受け部を位置調整可能に案内する案内部とを有していることが好ましい。 Further, in the relaxation fastening method, the reaction force receiver is attached to the end face of the chock of the roll machine, the base portion extends along the end face of the chock, and a bolt provided on the end face of the chock can be inserted. It is preferable to have a plate-shaped body having a bolt hole and a guide portion extending substantially perpendicular to the plate-shaped body to guide the receiving portion so that the position can be adjusted.

また、上記弛緩締結方法において、前記伝動部材が、軸方向に離間して配置された複数のギヤ部材から構成され、前記複数のギヤ部材の軸方向の離間距離が、前記リング状ギヤの厚さよりも小さく、前記ロックナットが締結状態から弛緩状態まで移動した際に、前記リング状ギヤが、前記複数のギヤ部材と係合を維持するように構成されていることが好ましい。 Further, in the relaxation fastening method, the transmission member is composed of a plurality of gear members arranged apart from each other in the axial direction, and the axial separation distance of the plurality of gear members is larger than the thickness of the ring-shaped gear. It is also preferable that the ring-shaped gear is configured to maintain engagement with the plurality of gear members when the lock nut moves from the fastened state to the loosened state.

本発明のロックナットの弛緩締結機構および弛緩締結方法によれば、既存の圧延ロール機の構成部品にほとんど手を加えることなく安価にロックナットの弛緩および締結が可能であり、かつ、大型の装置を用いる必要がない。 According to the locknut loosening fastening mechanism and the loosening fastening method of the present invention, the locknut can be loosened and fastened at low cost with almost no modification to the components of the existing rolling roll machine, and is a large-sized device. There is no need to use.

本発明の一実施形態の弛緩締結機構が適用されたロール機を示す概略図である。It is the schematic which shows the roll machine to which the relaxation fastening mechanism of one Embodiment of this invention is applied. 図１に示される弛緩締結機構を、ロールの一方の端面側から見た図である。It is a figure which looked at the relaxation fastening mechanism shown in FIG. 1 from one end face side of a roll. 図１に示される弛緩締結機構において、駆動装置が取り付けられる前の状態を示す斜視図である。It is a perspective view which shows the state before the drive device is attached in the relaxation fastening mechanism shown in FIG. 図３の状態から、駆動装置が取り付けられた状態を示す斜視図である。It is a perspective view which shows the state which the drive device is attached from the state of FIG. 図１に示される弛緩締結機構において、ロックナットが締結された状態および弛緩された状態を示す図である。It is a figure which shows the state which the locknut was fastened and the state which was loosened in the loosening fastening mechanism shown in FIG. 図１に示される弛緩締結機構の反力受けを示す斜視図である。It is a perspective view which shows the reaction force receiving of the relaxation fastening mechanism shown in FIG. 図６に示される反力受けの受け部が基部に固定された状態を示す上面図である。It is a top view which shows the state which the receiving part of the reaction force receiving part shown in FIG. 6 is fixed to the base part. 図１に示される弛緩締結機構の伝動部材の変形例を示す概略図である。It is the schematic which shows the modification of the transmission member of the relaxation fastening mechanism shown in FIG. 図１に示される弛緩締結機構が取り付けられる前のロール機を示す概略図である。It is the schematic which shows the roll machine before the relaxation fastening mechanism shown in FIG. 1 is attached. 図９に示される状態から、ロックナットにリング状ギヤが取り付けられた状態を示す概略図である。It is the schematic which shows the state which the ring-shaped gear is attached to the locknut from the state shown in FIG. 図１０に示される状態から、ロール機に反力受けが取り付けられた状態を示す概略図である。FIG. 5 is a schematic view showing a state in which a reaction force receiver is attached to the roll machine from the state shown in FIG. 図１１に示される状態から、駆動装置が反力受けに取り付けられた状態を示す概略図である。From the state shown in FIG. 11, it is the schematic which shows the state which the drive device is attached to the reaction force receiver. 図１２に示される状態から、駆動装置を駆動してリング状ギヤが弛緩した状態を示す概略図である。FIG. 5 is a schematic view showing a state in which the ring-shaped gear is relaxed by driving the drive device from the state shown in FIG.

以下、図面を参照し、本発明の一実施形態のロックナットの弛緩締結機構および弛緩締結方法を説明する。なお、以下の実施形態では圧延ロール機を例にあげて説明するが、以下の実施形態で示す圧延ロール機はあくまで一例であり、弛緩締結機構および弛緩締結方法の適用対象は圧延ロール機に限定されない。また、以下に示すロックナットの弛緩締結機構および弛緩締結方法は、以下の例に限定されるものではない。 Hereinafter, the loose fastening mechanism and the loose fastening method of the locknut according to the embodiment of the present invention will be described with reference to the drawings. In the following embodiment, a rolling roll machine will be described as an example, but the rolling roll machine shown in the following embodiment is only an example, and the application target of the relaxation fastening mechanism and the relaxation fastening method is limited to the rolling roll machine. Not done. Further, the loose fastening mechanism and the loose fastening method of the locknut shown below are not limited to the following examples.

図１は、本発明の一実施形態の弛緩締結機構が適用された圧延ロール機を示す概略図である。圧延ロール機（以下、単にロール機と呼ぶ）１は、図１に示されるように、ロールＲを回転可能に支持し、ロールＲが回転自在に支持されるチョックＣと、ロールＲの端部のロール軸の外周に取り付けられるロックナットＮとを備えている。ロックナットＮは、ロールＲの軸方向（以下、単に軸方向という）の一方に向かって先細となる外周面を有した略筒状の部材であり、内周面には雌ネジ部ＦＳが形成されている。ロックナットＮの雌ネジ部ＦＳが、ロールＲのロール軸の外周に設けられた雄ネジ部ＭＳと螺合し、ロックナットＮが弛緩または締結されることにより、ロールＲおよびチョックＣに対して軸方向（図１における左右方向）に進退する。なお、ロールＲ、チョックＣ、およびロックナットＮの構造は特に限定されない。 FIG. 1 is a schematic view showing a rolling roll machine to which the relaxation fastening mechanism of one embodiment of the present invention is applied. As shown in FIG. 1, the rolling roll machine (hereinafter, simply referred to as a roll machine) 1 has a chock C that rotatably supports the roll R and rotatably supports the roll R, and an end portion of the roll R. It is equipped with a lock nut N attached to the outer periphery of the roll shaft of the above. The locknut N is a substantially cylindrical member having an outer peripheral surface that tapers toward one of the axial directions (hereinafter, simply referred to as the axial direction) of the roll R, and a female screw portion FS is formed on the inner peripheral surface. Has been done. The female threaded portion FS of the locknut N is screwed with the male threaded portion MS provided on the outer periphery of the roll shaft of the roll R, and the locknut N is loosened or fastened to the roll R and the chock C. It moves forward and backward in the axial direction (left-right direction in FIG. 1). The structures of the roll R, the chock C, and the locknut N are not particularly limited.

本実施形態の弛緩締結機構Ｍは、図１および図２に示されるように、リング状ギヤ２と、伝動部材３と、駆動装置４と、反力受け５とを備えている。 As shown in FIGS. 1 and 2, the relaxation fastening mechanism M of the present embodiment includes a ring-shaped gear 2, a transmission member 3, a drive device 4, and a reaction force receiver 5.

リング状ギヤ２は、ロックナットＮに着脱可能に固定され、リング状ギヤ２が回転したときにロックナットＮを同方向に一体的に回転させる。リング状ギヤ２は、ロールＲの端部から取り付けることができるように、図２に示されるように、内周面の径がロールＲの端部の外径よりも大きい環状に形成されている。 The ring-shaped gear 2 is detachably fixed to the locknut N, and when the ring-shaped gear 2 rotates, the locknut N is integrally rotated in the same direction. As shown in FIG. 2, the ring-shaped gear 2 is formed in an annular shape in which the diameter of the inner peripheral surface is larger than the outer diameter of the end portion of the roll R so that the ring-shaped gear 2 can be attached from the end portion of the roll R. ..

本実施形態では、リング状ギヤ２は、図１に示されるように、リング状ギヤ２の端面２１がロックナットＮの端面Ｎａに対向するように固定されている。リング状ギヤ２は、ロックナットＮに固定するためのギヤ固定部２２（図２参照）を有している。ギヤ固定部２２は、ボルトＢを挿通可能な溝または孔であり、ロックナットＮの端面Ｎａには、同様にボルトを挿通可能な孔（図示せず）が形成されている。リング状ギヤ２は、ギヤ固定部２２とロックナットＮに形成された孔とを位置合わせしてボルトＢを締結することによって固定される。本実施形態では、ギヤ固定部２２は、リング状ギヤ２の内周から内側に突出した一対の突部によって構成され、略Ｕ字状の溝が形成されている。ギヤ固定部２２は、リング状ギヤ２の内周において、周方向に所定の間隔で複数（本実施形態では４つ）設けられている。 In the present embodiment, as shown in FIG. 1, the ring-shaped gear 2 is fixed so that the end surface 21 of the ring-shaped gear 2 faces the end surface Na of the locknut N. The ring-shaped gear 2 has a gear fixing portion 22 (see FIG. 2) for fixing to the locknut N. The gear fixing portion 22 is a groove or a hole through which a bolt B can be inserted, and a hole (not shown) through which a bolt can be inserted is similarly formed in the end surface Na of the locknut N. The ring-shaped gear 2 is fixed by aligning the gear fixing portion 22 and the hole formed in the locknut N and fastening the bolt B. In the present embodiment, the gear fixing portion 22 is composed of a pair of protrusions protruding inward from the inner circumference of the ring-shaped gear 2, and a substantially U-shaped groove is formed. A plurality of gear fixing portions 22 (four in the present embodiment) are provided on the inner circumference of the ring-shaped gear 2 at predetermined intervals in the circumferential direction.

なお、ギヤ固定部２２は、リング状ギヤ２をロックナットＮに固定することができれば、その固定方法や形状は特に限定されない。たとえば、リング状ギヤ２は、リング状ギヤ２の内周面とロックナットＮの外周面とが対向するように、ロックナットＮの外側に嵌め込まれて、ボルト等の公知の固定部材により固定されてもよい。 The gear fixing portion 22 is not particularly limited in its fixing method and shape as long as the ring-shaped gear 2 can be fixed to the locknut N. For example, the ring-shaped gear 2 is fitted to the outside of the locknut N so that the inner peripheral surface of the ring-shaped gear 2 and the outer peripheral surface of the locknut N face each other, and is fixed by a known fixing member such as a bolt. You may.

リング状ギヤ２は、ロックナットＮに着脱可能に固定される。これにより、リング状ギヤ２は同じ径を有するロックナットＮが設けられた他のロール機にも適用することができる。したがって、１つのリング状ギヤ２を用意すれば、同じ径を有するロックナットＮを有する複数のロール機１のロックナットＮに汎用的に取り付けることができる。 The ring-shaped gear 2 is detachably fixed to the locknut N. As a result, the ring-shaped gear 2 can be applied to other roll machines provided with a locknut N having the same diameter. Therefore, if one ring-shaped gear 2 is prepared, it can be universally attached to the locknut N of a plurality of roll machines 1 having the locknut N having the same diameter.

図１および図２に示されるように、リング状ギヤ２の外周には歯部２３が形成されている。歯部２３は後述する伝動部材３の噛合部３１と係合してロールＲの軸周りに回転するように構成されている。 As shown in FIGS. 1 and 2, tooth portions 23 are formed on the outer periphery of the ring-shaped gear 2. The tooth portion 23 is configured to engage with the meshing portion 31 of the transmission member 3 described later and rotate around the axis of the roll R.

駆動装置４は、伝動部材３に接続され、伝動部材３を駆動してリング状ギヤ２を回転させる。駆動装置４は、伝動部材３を駆動することができれば特にその種類は限定されない。駆動装置４としては、たとえば、動力式トルクレンチを用いることができる。動力式トルクレンチとしては、たとえば、電動トルクレンチ、エア式トルクレンチ、油圧式トルクレンチなどを用いることができる。駆動装置４は、駆動装置４に設けられた所定の操作部（図示せず）を操作することよって動作して、所定の回転軸周りに回転するように構成されている。 The drive device 4 is connected to the transmission member 3 and drives the transmission member 3 to rotate the ring-shaped gear 2. The type of the drive device 4 is not particularly limited as long as it can drive the transmission member 3. As the drive device 4, for example, a powered torque wrench can be used. As the power type torque wrench, for example, an electric torque wrench, an air type torque wrench, a hydraulic type torque wrench and the like can be used. The drive device 4 is configured to operate by operating a predetermined operation unit (not shown) provided in the drive device 4 so as to rotate around a predetermined rotation axis.

駆動装置４は、図１に示されるように、駆動装置本体４１と、反力受け５に接続される接続部４２と、伝動部材３に連結され、接続部４２に対して回転する回転部４３とを有している。駆動装置本体４１は、正逆回転可能なモータを備え、回転部４３を回転軸周りに正逆回転させる。以下において、回転部４３の回転軸の軸方向を単に軸方向と呼ぶ場合がある。なお、ロールＲの軸方向と回転部４３の回転軸の軸方向とは平行な方向であるが、必ずしも平行である必要はない。 As shown in FIG. 1, the drive device 4 has a drive device main body 41, a connection portion 42 connected to a reaction force receiver 5, and a rotating portion 43 connected to a transmission member 3 and rotating with respect to the connection portion 42. And have. The drive device main body 41 includes a motor capable of forward / reverse rotation, and rotates the rotating portion 43 forward / reverse around the rotation axis. In the following, the axial direction of the rotating shaft of the rotating portion 43 may be simply referred to as an axial direction. The axial direction of the roll R and the axial direction of the rotation axis of the rotating portion 43 are parallel, but they do not necessarily have to be parallel.

接続部４２は、駆動装置本体４１に接続されている。接続部４２は、駆動装置本体４１に対して回転しないように構成されており、駆動装置４を駆動した際に、接続部４２は回転しない。接続部４２は、後述する反力受け５の受け部５２に接続されて、駆動装置４が反力受け５に接続される。接続部４２は、受け部５２に接続されたときに、駆動装置本体４１が反力で回転することを抑制する。接続部４２の形状は特に限定されないが、本実施形態では、接続部４２は、図３に示されるように、略筒状に形成されている。接続部４２には、図３～図５に示されるように、接続部４２の外周において軸方向に延びる複数の突条が形成され、後述する受け部５２の係合部Ｅとスプライン嵌合するように構成されている。これにより、接続部４２は、受け部５２に対して接続部４２の軸周りには回転せず、かつ、受け部５２に対して軸方向に移動可能に接続される。なお、接続部４２と、受け部５２との間の接続は、スプライン嵌合に限定されない。 The connection portion 42 is connected to the drive device main body 41. The connecting portion 42 is configured so as not to rotate with respect to the driving device main body 41, and the connecting portion 42 does not rotate when the driving device 4 is driven. The connecting portion 42 is connected to the receiving portion 52 of the reaction force receiving 5 described later, and the driving device 4 is connected to the reaction force receiving 5. The connecting portion 42 suppresses the drive device main body 41 from rotating due to a reaction force when connected to the receiving portion 52. The shape of the connecting portion 42 is not particularly limited, but in the present embodiment, the connecting portion 42 is formed in a substantially cylindrical shape as shown in FIG. As shown in FIGS. 3 to 5, the connecting portion 42 is formed with a plurality of ridges extending in the axial direction on the outer circumference of the connecting portion 42, and is spline-fitted with the engaging portion E of the receiving portion 52 described later. It is configured as follows. As a result, the connecting portion 42 does not rotate around the axis of the connecting portion 42 with respect to the receiving portion 52, and is movably connected to the receiving portion 52 in the axial direction. The connection between the connecting portion 42 and the receiving portion 52 is not limited to spline fitting.

回転部４３は、図５に示されるように、伝動部材３に接続され、回転部４３が回転することにより伝動部材３を回転させる。回転部４３は駆動装置本体４１により正逆回転し、伝動部材３を回転軸周りに正逆回転させる。回転部４３は、伝動部材３に設けられた取付部３２（図３参照）に嵌合され、駆動装置４と伝動部材３とが接続される。また、回転部４３が伝動部材３に接続されたときに、駆動装置４を回転軸の軸方向に移動させると、駆動装置４とともに伝動部材３も軸方向に移動するように駆動装置４と伝動部材３とが接続される（図５の二点鎖線参照）。 As shown in FIG. 5, the rotating portion 43 is connected to the transmission member 3, and the rotating portion 43 rotates to rotate the transmission member 3. The rotating unit 43 is rotated in the forward and reverse directions by the drive device main body 41, and the transmission member 3 is rotated in the forward and reverse directions around the rotation axis. The rotating portion 43 is fitted to a mounting portion 32 (see FIG. 3) provided on the transmission member 3, and the drive device 4 and the transmission member 3 are connected to each other. Further, when the rotating portion 43 is connected to the transmission member 3, if the driving device 4 is moved in the axial direction of the rotating shaft, the transmission member 3 is transmitted to the driving device 4 so as to move in the axial direction together with the driving device 4. The member 3 is connected (see the two-dot chain line in FIG. 5).

伝動部材３は、駆動装置４の動力によって動作する。伝動部材３は、外周にリング状ギヤ２の歯部２３と係合する噛合部３１を有し、リング状ギヤ２と噛み合ってリング状ギヤ２を回転させる。伝動部材３は本実施形態では歯車であるが、リング状ギヤ２を回転させることができれば、伝動部材３は歯車に限定されない。また、伝動部材３が歯車である場合、歯車の形状は平歯車に限定されない。伝動部材３は、図３に示されるように、駆動装置４の回転部４３を着脱可能に接続する取付部３２を有している。取付部３２は、本実施形態では、断面矩形状の嵌合部位を有する回転部４３が嵌合する嵌合穴である。なお、取付部３２の形状は特に限定されず、駆動装置４の回転部４３の嵌合部位の形状に応じて適宜変更が可能である。 The transmission member 3 is operated by the power of the drive device 4. The transmission member 3 has a meshing portion 31 that engages with the tooth portion 23 of the ring-shaped gear 2 on the outer periphery thereof, and meshes with the ring-shaped gear 2 to rotate the ring-shaped gear 2. The transmission member 3 is a gear in the present embodiment, but the transmission member 3 is not limited to the gear as long as the ring-shaped gear 2 can be rotated. Further, when the transmission member 3 is a gear, the shape of the gear is not limited to the spur gear. As shown in FIG. 3, the transmission member 3 has a mounting portion 32 that detachably connects the rotating portion 43 of the drive device 4. In the present embodiment, the mounting portion 32 is a fitting hole into which a rotating portion 43 having a fitting portion having a rectangular cross section is fitted. The shape of the mounting portion 32 is not particularly limited, and can be appropriately changed according to the shape of the fitting portion of the rotating portion 43 of the drive device 4.

反力受け５は、リング状ギヤ２の外周近傍においてロール機１に固定される。反力受け５は、伝動部材３によるリング状ギヤ２の回転時の反力を支持するように駆動装置４が接続される。反力受け５は、リング状ギヤ２の回転時の反力を支持することができるように、たとえば鉄などの高剛性の金属により形成されることが好ましい。ただし、反力受け５は、反力の支持が可能であれば、樹脂などの軽量な材質にて形成しても構わない。 The reaction force receiver 5 is fixed to the roll machine 1 in the vicinity of the outer circumference of the ring-shaped gear 2. The reaction force receiver 5 is connected to the drive device 4 so as to support the reaction force during rotation of the ring-shaped gear 2 by the transmission member 3. The reaction force receiver 5 is preferably formed of a high-rigidity metal such as iron so that the reaction force during rotation of the ring-shaped gear 2 can be supported. However, the reaction force receiver 5 may be formed of a lightweight material such as resin as long as the reaction force can be supported.

反力受け５は、本実施形態では、図１～図５に示されるように、ロール機１のチョックＣの端面Ｃａに固定されている。具体的には、反力受け５はチョックＣの端面Ｃａのうち下端部に、チョックＣの端面Ｃａに設けられたボルトＢ２を利用してチョックＣに固定されている。このように、予めチョックＣに備え付けられたボルトＢ２を用いて反力受け５を固定する場合、既存のロール機１の構造をほとんど変更することなく、反力受け５および弛緩締結機構Ｍを取り付けることができる。したがって、既存のロール機１への適用が容易となる。なお、反力受け５の固定位置は、チョックＣの端面Ｃａの下端部に限定されず、チョックＣの端面Ｃａの他の位置であってもよい。 In the present embodiment, the reaction force receiver 5 is fixed to the end face Ca of the chock C of the roll machine 1 as shown in FIGS. 1 to 5. Specifically, the reaction force receiver 5 is fixed to the lower end of the end face Ca of the chock C by using a bolt B2 provided on the end face Ca of the chock C. In this way, when the reaction force receiver 5 is fixed by using the bolt B2 provided in the chock C in advance, the reaction force receiver 5 and the relaxation fastening mechanism M are attached with almost no change in the structure of the existing roll machine 1. be able to. Therefore, it can be easily applied to the existing roll machine 1. The fixed position of the reaction force receiver 5 is not limited to the lower end of the end face Ca of the chock C, and may be another position of the end face Ca of the chock C.

図６および図７に示されるように、反力受け５は、ロール機１に固定される基部５１と、伝動部材３によるリング状ギヤ２の回転時の反力を受ける受け部５２とを有している。 As shown in FIGS. 6 and 7, the reaction force receiver 5 has a base 51 fixed to the roll machine 1 and a receiver 52 that receives the reaction force when the ring-shaped gear 2 is rotated by the transmission member 3. is doing.

基部５１は、ロール機１に固定される部位である。本実施形態では、基部５１は、チョックＣの端面Ｃａに沿って延び、チョックＣの端面Ｃａに設けられたボルトＢ２を挿通可能なボルト孔Ｈを有する板状体５１ａと、板状体５１ａに対して略垂直に延び、受け部５２を位置調整可能に案内する案内部５１ｂとを有している。 The base 51 is a portion fixed to the roll machine 1. In the present embodiment, the base portion 51 extends along the end face Ca of the chock C, and is formed into a plate-shaped body 51a having a bolt hole H through which a bolt B2 provided in the end face Ca of the chock C can be inserted, and a plate-shaped body 51a. On the other hand, it has a guide portion 51b that extends substantially vertically and guides the receiving portion 52 in a position-adjustable manner.

板状体５１ａは、様々な大きさのチョックＣのボルトＢ２を利用できるように、水平方向に長い長孔状のボルト孔Ｈを有している。水平方向に長い長孔状のボルト孔Ｈを有することにより、取付対象であるロール機１が変わり、反力受け５を取り付けるチョックＣの大きさやボルトＢ２同士の周方向での間隔が変わった場合であっても、チョックＣに設けられた既設のボルトＢ２の間隔の変化に応じて、長孔状のボルト孔Ｈ内でのボルトＢ２の取付位置を調整することができる。 The plate-shaped body 51a has an elongated bolt hole H long in the horizontal direction so that bolts B2 of chock Cs of various sizes can be used. When the roll machine 1 to be mounted changes due to having the elongated bolt holes H long in the horizontal direction, and the size of the chock C to which the reaction force receiver 5 is mounted and the distance between the bolts B2 in the circumferential direction change. Even so, the mounting position of the bolt B2 in the elongated bolt hole H can be adjusted according to the change in the interval between the existing bolts B2 provided in the chock C.

また、本実施形態では、図６および図７に示されるように、基部５１は、受け部５２を案内する案内部５１ｂを有している。案内部５１ｂは、板状体５１ａに対して略垂直かつ水平方向に延びる板状の底部５１１と、底部５１１に対して略垂直に上方に向かって延びる一対の側壁５１２を有した断面略Ｃ字状に構成されている。底部５１１には、受け部５２を取り付けた後にボルト等の固定部材により固定するための長孔Ｈ２が形成されている。本実施形態では、底部５１１に長孔Ｈ２が形成され、受け部５２には円形の挿通孔Ｈ３が形成されている。これにより、後述するように、受け部５２の基部５１に対する取付位置（駆動装置４の回転軸が延びる方向での位置）を調整することが可能となる。 Further, in the present embodiment, as shown in FIGS. 6 and 7, the base 51 has a guide portion 51b that guides the receiving portion 52. The guide portion 51b has a substantially C-shaped cross section having a plate-shaped bottom portion 511 extending substantially perpendicularly and horizontally to the plate-shaped body 51a and a pair of side wall 512s extending upward substantially perpendicular to the bottom portion 511. It is structured like a shape. The bottom portion 511 is formed with an elongated hole H2 for fixing the receiving portion 52 with a fixing member such as a bolt after the receiving portion 52 is attached. In the present embodiment, the long hole H2 is formed in the bottom portion 511, and the circular insertion hole H3 is formed in the receiving portion 52. As a result, as will be described later, it is possible to adjust the mounting position of the receiving portion 52 with respect to the base portion 51 (the position in the direction in which the rotation axis of the drive device 4 extends).

なお、受け部５２は基部５１に対して移動しないように固定されていてもよいし、基部５１と一体であってもよい。この場合、案内部５１ｂは単に受け部５２を支持する支持部として機能する。 The receiving portion 52 may be fixed so as not to move with respect to the base portion 51, or may be integrated with the base portion 51. In this case, the guide portion 51b simply functions as a support portion that supports the receiving portion 52.

また、基部５１は、本実施形態では、図６に示されるように、リング状ギヤ２の回転時の反力に耐え得る剛性を有するように、第１補強部材５１ｃおよび第２補強部材５１ｄを有している。第１補強部材５１ｃは、板状体５１ａに対して略垂直かつ水平方向に延びる板状の補強部材である。第１補強部材５１ｃは、板状体５１ａの上端部から一対延びている。また、第２補強部材５１ｄは、案内部５１ｂの側壁５１２から屈曲して上方に延びる補強部材である。第２補強部材５１ｄの上端側において、第２補強部材５１ｄは第１補強部材５１ｃの先端部と接合されている。第１補強部材５１ｃおよび第２補強部材５１ｄは、板状体５１ａ、案内部５１ｂおよび受け部５２と同様に、鉄などの高剛性の金属により構成されていることが好ましい。ただし、反力受け５の構成部材である、第１補強部材５１ｃ、第２補強部材５１ｄ、板状体５１ａ、案内部５１ｂおよび受け部５２などの各部材は、反力の支持が可能であれば、樹脂などの軽量な材質にて形成しても構わない。 Further, in the present embodiment, as shown in FIG. 6, the base portion 51 has the first reinforcing member 51c and the second reinforcing member 51d so as to have rigidity that can withstand the reaction force during rotation of the ring-shaped gear 2. Have. The first reinforcing member 51c is a plate-shaped reinforcing member extending substantially perpendicularly and horizontally with respect to the plate-shaped body 51a. A pair of first reinforcing members 51c extend from the upper end portion of the plate-shaped body 51a. Further, the second reinforcing member 51d is a reinforcing member that bends from the side wall 512 of the guide portion 51b and extends upward. On the upper end side of the second reinforcing member 51d, the second reinforcing member 51d is joined to the tip end portion of the first reinforcing member 51c. The first reinforcing member 51c and the second reinforcing member 51d are preferably made of a highly rigid metal such as iron, like the plate-shaped body 51a, the guide portion 51b, and the receiving portion 52. However, each member such as the first reinforcing member 51c, the second reinforcing member 51d, the plate-shaped body 51a, the guide portion 51b, and the receiving portion 52, which are the constituent members of the reaction force receiver 5, can support the reaction force. For example, it may be formed of a lightweight material such as resin.

また、基部５１は、第１補強部材５１ｃおよび第２補強部材５１ｄに加え、リング状ギヤ２の歯部２３や伝動部材３の噛合部３１と接触して怪我をすることを防止するために、保護カバーＣＶを有している。保護カバーＣＶは、本実施形態では、第１補強部材５１ｃの上方および下方に設けられている。第１補強部材５１ｃの下方に設けられた一対の第１保護カバーＣＶ１は、第２補強部材５１ｄと同様に、案内部５１ｂの側壁５１２から互いの間隔が広くなるように傾斜した後、垂直方向に延び、第１補強部材５１ｃの下面に接続されている。また、第１補強部材５１ｃの上方に設けられた一対の第２保護カバーＣＶ２は、第１補強部材５１ｃの上面と、リング状ギヤ２の歯部２３の軌跡との間の隙間を埋めるように、第１補強部材５１ｃの上面から立設している。これにより、リング状ギヤ２の歯部２３と伝動部材３の噛合部３１との係合箇所への指等の挟み込みが防止される。保護カバーＣＶは、たとえば、アクリル板など、樹脂製の薄板により形成されることが好ましい。これにより作業者の怪我などを防止しながら、反力受け５全体を軽量化することができる。また、保護カバーＣＶは、透明な薄板であることが好ましい。保護カバーＣＶが透明であることにより、リング状ギヤ２と伝動部材３とが噛み合っているかどうかや、伝動部材３の軸方向での位置を容易に確認することができる。 Further, in order to prevent the base portion 51 from coming into contact with the tooth portion 23 of the ring-shaped gear 2 and the meshing portion 31 of the transmission member 3 in addition to the first reinforcing member 51c and the second reinforcing member 51d, the base portion 51 may be injured. It has a protective cover CV. In this embodiment, the protective cover CV is provided above and below the first reinforcing member 51c. Similar to the second reinforcing member 51d, the pair of first protective covers CV1 provided below the first reinforcing member 51c are inclined from the side wall 512 of the guide portion 51b so as to be widely spaced from each other, and then in the vertical direction. And is connected to the lower surface of the first reinforcing member 51c. Further, the pair of second protective covers CV2 provided above the first reinforcing member 51c fills a gap between the upper surface of the first reinforcing member 51c and the locus of the tooth portion 23 of the ring-shaped gear 2. , It is erected from the upper surface of the first reinforcing member 51c. As a result, it is possible to prevent fingers or the like from being caught in the engaging portion between the tooth portion 23 of the ring-shaped gear 2 and the meshing portion 31 of the transmission member 3. The protective cover CV is preferably formed of a thin resin plate such as an acrylic plate. As a result, the weight of the entire reaction force receiver 5 can be reduced while preventing the operator from being injured. Further, the protective cover CV is preferably a transparent thin plate. Since the protective cover CV is transparent, it is possible to easily confirm whether or not the ring-shaped gear 2 and the transmission member 3 are engaged with each other and the position of the transmission member 3 in the axial direction.

受け部５２は、駆動装置４が取り付けられ、伝動部材３によるリング状ギヤ２の回転時の反力を支持する部位である。受け部５２は、本実施形態では、基部５１とは別体として構成されているが、受け部５２は基部５１と一体に形成されていてもよい。 The receiving portion 52 is a portion to which the driving device 4 is attached and supports the reaction force during rotation of the ring-shaped gear 2 by the transmission member 3. In the present embodiment, the receiving portion 52 is configured as a separate body from the base portion 51, but the receiving portion 52 may be formed integrally with the base portion 51.

本実施形態では、受け部５２は、図３～図６に示されるように、駆動装置４の接続部４２を挿通可能な、回転部４３の回転軸が延びる方向に貫通する貫通孔５２ａを有している。貫通孔５２ａの内面には、接続部４２の外周と回転軸周りに係合する係合部Ｅを有している。接続部４２の外周と係合部Ｅとが回転軸周りで係合することにより、リング状ギヤ２の回転時の反力が支持され、駆動装置４の駆動時に駆動装置本体４１が反力によって回転することが防止される。 In the present embodiment, as shown in FIGS. 3 to 6, the receiving portion 52 has a through hole 52a through which the connecting portion 42 of the driving device 4 can be inserted and penetrates in the direction in which the rotating shaft of the rotating portion 43 extends. is doing. The inner surface of the through hole 52a has an engaging portion E that engages with the outer circumference of the connecting portion 42 around the rotation axis. By engaging the outer circumference of the connecting portion 42 and the engaging portion E around the rotation axis, the reaction force during rotation of the ring-shaped gear 2 is supported, and the drive device main body 41 is driven by the reaction force when the drive device 4 is driven. It is prevented from rotating.

本実施形態では、図５に示されるように、接続部４２は、ロックナットＮの弛緩または締結時のリング状ギヤ２の軸方向への移動に伴って、貫通孔５２ａに対して回転軸に沿って進退可能に接続されている。接続部４２の外周と貫通孔５２ａに設けられた係合部Ｅの形状は、回転軸周りで係合するものであれば、特に限定されない。本実施形態では、係合部Ｅは、回転軸の軸方向に沿って設けられた複数の凹凸であり、接続部４２の突条とスプライン嵌合するように構成されている。接続部４２が貫通孔５２ａに対して進退可能であることにより、図５に二点鎖線で示すように、ロックナットＮの弛緩または締結に伴って、リング状ギヤ２が軸方向へ移動する際に、その移動に合わせて駆動装置４を軸方向に移動させることができる。したがって、歯車である伝動部材３の厚さを軽量化のために薄くして、伝動部材３の軸方向の厚さが、リング状ギヤ２およびロックナットＮが締結された状態から弛緩した状態（外れる状態）まで軸方向で移動するストロークよりも小さい場合であっても、ロックナットＮが緩みきるまで、または、完全に締結される状態まで、伝動部材３とリング状ギヤ２との間の係合を維持させることができる。したがって、伝動部材３の軸方向の厚さを薄くして軽量化することができ、比較的重くて大きな伝動部材３の着脱時の作業が容易になる。 In the present embodiment, as shown in FIG. 5, the connecting portion 42 is rotated with respect to the through hole 52a as the locknut N is loosened or the ring-shaped gear 2 is moved in the axial direction at the time of fastening. It is connected so that it can move forward and backward along. The shape of the engaging portion E provided on the outer circumference of the connecting portion 42 and the through hole 52a is not particularly limited as long as it engages around the rotation axis. In the present embodiment, the engaging portion E is a plurality of irregularities provided along the axial direction of the rotating shaft, and is configured to spline fit with the ridge of the connecting portion 42. Since the connecting portion 42 can move forward and backward with respect to the through hole 52a, as shown by the alternate long and short dash line in FIG. 5, when the ring-shaped gear 2 moves in the axial direction as the locknut N is loosened or fastened. In addition, the drive device 4 can be moved in the axial direction according to the movement. Therefore, the thickness of the transmission member 3 which is a gear is reduced in order to reduce the weight, and the thickness of the transmission member 3 in the axial direction is relaxed from the state where the ring-shaped gear 2 and the locknut N are fastened (the state where the ring-shaped gear 2 and the locknut N are fastened). Even if it is smaller than the stroke that moves in the axial direction to the disengaged state), the engagement between the transmission member 3 and the ring-shaped gear 2 until the locknut N is completely loosened or completely fastened. The gear can be maintained. Therefore, the thickness of the transmission member 3 in the axial direction can be reduced to reduce the weight, and the relatively heavy and large transmission member 3 can be easily attached and detached.

本実施形態では、図５～図７に示されるように、受け部５２は、基部５１に対して、回転軸が延びる方向で位置調整可能に取り付けられている。この場合、ロックナットＮおよびリング状ギヤ２の移動に応じて受け部５２の位置を調整することによって、軸方向での厚さが薄い伝動部材３を用いた場合であっても、ロックナットＮが緩みきるまで、または、完全に締結される状態まで、伝動部材３とリング状ギヤ２との間の係合を維持させることができる。また、たとえば接続部４２の軸方向の長さがロックナットＮの軸方向のストローク長さよりも短い場合などであっても、ロックナットＮを完全に緩めたり、締結させることが可能となる。このように、受け部５２を基部５１に対して位置調整可能に取り付けることによって、接続部４２を短くすることが可能になり、駆動装置４を軸方向に小型化することができる。 In the present embodiment, as shown in FIGS. 5 to 7, the receiving portion 52 is attached to the base portion 51 so as to be adjustable in position in the direction in which the rotation axis extends. In this case, by adjusting the position of the receiving portion 52 according to the movement of the locknut N and the ring-shaped gear 2, the locknut N is used even when the transmission member 3 having a thin axial thickness is used. The engagement between the transmission member 3 and the ring-shaped gear 2 can be maintained until the transmission member 3 is completely loosened or is completely fastened. Further, for example, even when the axial length of the connecting portion 42 is shorter than the axial stroke length of the locknut N, the locknut N can be completely loosened or fastened. By attaching the receiving portion 52 to the base portion 51 so as to be adjustable in position in this way, the connecting portion 42 can be shortened, and the drive device 4 can be miniaturized in the axial direction.

受け部５２は、図６に示されるように、略Ｌ字状に形成され、基部５１の案内部５１ｂに沿って案内される板状の固定板５２ｂと、接続部４２が接続され、固定板５２ｂに対して略垂直に延びる被接続板５２ｃとを有している。固定板５２ｂは、基部５１の一対の側壁５１２間の間隔よりわずかに小さい幅を有し、案内部５１ｂに対してスライド可能である。固定板５２ｂには、底部５１１の長孔Ｈ２と連通する位置に円形の挿通孔Ｈ３が形成され、固定板５２ｂを案内部５１ｂに対して所定の位置に移動させた後に、連通した長孔Ｈ２と挿通孔Ｈ３とにボルト等の固定部材を挿通して、受け部５２を基部５１に固定することができる。なお、本実施形態では、底部５１１に長孔Ｈ２が形成され、固定板５２ｂに円形の挿通孔Ｈ３が形成されているが、受け部５２を基部５１に対して固定することができれば、その固定方法は特に限定されない。たとえば、底部５１１の長孔Ｈ２に代えて、受け部５２の基部５１に対するスライド方向に沿って設けられた複数の孔を設けてもよいし、挿通孔Ｈ３に代えて、雌ネジが形成された貫通または非貫通の孔としてもよい。また、挿通孔Ｈ３の形状は円形に限定されず、長孔等、他の形状としてもよい。 As shown in FIG. 6, the receiving portion 52 is formed in a substantially L shape, and the plate-shaped fixing plate 52b guided along the guide portion 51b of the base portion 51 and the connecting portion 42 are connected to each other to form a fixing plate. It has a connected plate 52c extending substantially perpendicular to 52b. The fixing plate 52b has a width slightly smaller than the distance between the pair of side walls 512 of the base 51, and is slidable with respect to the guide portion 51b. A circular insertion hole H3 is formed in the fixing plate 52b at a position communicating with the long hole H2 of the bottom portion 511, and after moving the fixing plate 52b to a predetermined position with respect to the guide portion 51b, the long hole H2 communicating with the fixing plate 52b is formed. A fixing member such as a bolt can be inserted into the insertion hole H3 to fix the receiving portion 52 to the base portion 51. In the present embodiment, the elongated hole H2 is formed in the bottom portion 511 and the circular insertion hole H3 is formed in the fixing plate 52b. However, if the receiving portion 52 can be fixed to the base portion 51, the fixing portion 52 is fixed. The method is not particularly limited. For example, instead of the elongated hole H2 of the bottom portion 511, a plurality of holes provided along the sliding direction with respect to the base portion 51 of the receiving portion 52 may be provided, or instead of the insertion hole H3, a female screw is formed. It may be a penetrating or non-penetrating hole. Further, the shape of the insertion hole H3 is not limited to a circular shape, and may be another shape such as an elongated hole.

なお、受け部５２を案内部５１ｂに対して移動させる方法は、上述した方法に限定されない。たとえば、受け部５２と基部５１との間に送りネジを用いたアジャスタ機構（図示せず）を設けて、受け部５２を基部５１に対して移動させても構わない。たとえば、受け部５２を移動させる方向（回転軸に平行な方向）に沿って、雌ネジが切られた受け部５２に送りネジを挿通して基部５１に回転可能に取り付ける。送りネジの一端には送りネジを軸周りに回転させるための操作部を設け、操作部を回転させることによって送りネジをその場で回転させる。雌ネジが切られた受け部５２は、送りネジの回転によって送りネジの軸方向に進退させることが可能となる。 The method of moving the receiving portion 52 with respect to the guide portion 51b is not limited to the above-mentioned method. For example, an adjuster mechanism (not shown) using a feed screw may be provided between the receiving portion 52 and the base portion 51 to move the receiving portion 52 with respect to the base portion 51. For example, the feed screw is inserted into the receiving portion 52 in which the female thread is cut along the direction in which the receiving portion 52 is moved (the direction parallel to the rotation axis), and the receiving portion 52 is rotatably attached to the base portion 51. An operation unit for rotating the feed screw around an axis is provided at one end of the feed screw, and the feed screw is rotated on the spot by rotating the operation unit. The receiving portion 52 with the female screw cut can be moved back and forth in the axial direction of the feed screw by the rotation of the feed screw.

上述した実施形態では、伝動部材３を反力受け５に対して軸方向に移動させるものを例に挙げて説明したが、ロックナットＮの締結状態から弛緩状態まで伝動部材３を軸方向に移動させることなく、伝動部材３とリング状ギヤ２とが係合を継続するように構成しても構わない。たとえば、伝動部材３の軸方向の厚さをロックナットＮの締結状態（図５に実線で示される状態）から弛緩状態（図５に二点鎖線で示される状態）までにリング状ギヤ２が軸方向で移動するストロークよりも大きくなるように構成すればよい。この場合、駆動装置４および伝動部材３を軸方向に移動させる必要がないため、ロックナットＮの弛緩締結作業がより楽になる。 In the above-described embodiment, the transmission member 3 is moved in the axial direction with respect to the reaction force receiver 5 as an example. However, the transmission member 3 is moved in the axial direction from the fastened state to the relaxed state of the locknut N. The transmission member 3 and the ring-shaped gear 2 may be configured to continue to engage with each other without causing the transmission member 3 to continue to engage with the ring-shaped gear 2. For example, the ring-shaped gear 2 changes the axial thickness of the transmission member 3 from the locked state of the locknut N (the state shown by the solid line in FIG. 5) to the relaxed state (the state shown by the alternate long and short dash line in FIG. 5). It may be configured so as to be larger than the stroke moving in the axial direction. In this case, since it is not necessary to move the drive device 4 and the transmission member 3 in the axial direction, the loosening and fastening work of the locknut N becomes easier.

また、伝動部材３が、たとえば、図８に示されるように、軸方向に離間して配置された複数のギヤ部材３０から構成されていてもよい。この場合、複数のギヤ部材３０の軸方向の離間距離Ｔ２がリング状ギヤ２の厚さＴ１よりも小さくなるように構成されている。伝動部材３をこのように構成することにより、伝動部材３を軸方向に移動させずにその場で回転させたとしても、ロックナットＮが締結状態から弛緩状態まで移動した際に、リング状ギヤ２が複数のギヤ部材３０のいずれかと係合を維持する。そのため、駆動装置４および伝動部材３を軸方向に移動させる必要がなく、さらに、（図８における右端のギヤ部材３０と左端のギヤ部材３０までの間に隙間が形成されていないものと比較して）伝動部材３を軽量化することができる。したがって、ロックナットＮの弛緩締結作業がより楽になることに加え、伝動部材３の着脱作業が容易になる。図８に示される変形例では、軸方向（回転軸が延びる方向）で一端側（右側）に設けられた一端側ギヤ部材３０から、他端側（左側）に設けられた他端側ギヤ部材３０までの距離が、ロックナットＮの締結状態からロックナットＮが外れる状態である弛緩状態までの軸方向のストロークよりも大きくなるように構成されている。 Further, the transmission member 3 may be composed of a plurality of gear members 30 arranged apart from each other in the axial direction, for example, as shown in FIG. In this case, the axial separation distance T2 of the plurality of gear members 30 is configured to be smaller than the thickness T1 of the ring-shaped gear 2. By configuring the transmission member 3 in this way, even if the transmission member 3 is rotated on the spot without moving in the axial direction, when the locknut N moves from the fastened state to the relaxed state, the ring-shaped gear 2 maintains engagement with any of the plurality of gear members 30. Therefore, it is not necessary to move the drive device 4 and the transmission member 3 in the axial direction, and further (compared to the case where no gap is formed between the gear member 30 at the right end and the gear member 30 at the left end in FIG. The weight of the transmission member 3 can be reduced. Therefore, in addition to making the loosening and fastening work of the locknut N easier, the work of attaching and detaching the transmission member 3 becomes easier. In the modified example shown in FIG. 8, one end side gear member 30 provided on one end side (right side) in the axial direction (direction in which the rotating shaft extends) to the other end side gear member provided on the other end side (left side). The distance to 30 is configured to be larger than the axial stroke from the locked state of the locknut N to the relaxed state in which the locknut N is released.

上述したように、本実施形態のロックナットＮの弛緩締結機構Ｍは、ロックナットＮに着脱可能に固定されるリング状ギヤ２と、リング状ギヤ２を回転させる伝動部材３と、伝動部材３を駆動してリング状ギヤ２を回転させる駆動装置４と、駆動装置が接続される反力受け５を有している。この構成により、駆動装置４を駆動することにより、伝動部材３によってリング状ギヤ２を回転させ、リング状ギヤ２と固定されたロックナットＮを弛緩または締結させる。これにより、既存のロール機１の構成部品にほとんど手を加えることなく安価にロックナットＮの弛緩および締結が可能であり、かつ、ロックナットＮの弛緩および締結に大型の装置を用いる必要がない。 As described above, the loosening fastening mechanism M of the locknut N of the present embodiment includes a ring-shaped gear 2 that is detachably fixed to the locknut N, a transmission member 3 that rotates the ring-shaped gear 2, and a transmission member 3. It has a drive device 4 for driving the ring-shaped gear 2 to rotate the ring-shaped gear 2 and a reaction force receiver 5 to which the drive device is connected. With this configuration, by driving the drive device 4, the ring-shaped gear 2 is rotated by the transmission member 3, and the locknut N fixed to the ring-shaped gear 2 is loosened or fastened. As a result, the locknut N can be loosened and fastened at low cost with almost no modification to the components of the existing roll machine 1, and it is not necessary to use a large device for loosening and fastening the locknut N. ..

つぎに、図９から図１３を用いて、ロックナットＮの弛緩締結機構Ｍおよび弛緩締結方法をより詳細に説明する。なお、以下の説明はあくまで一例であり、本発明のロックナットＮの弛緩締結機構Ｍおよび弛緩締結方法は、以下の構造や以下の方法に限定されるものではない。 Next, the loose fastening mechanism M of the locknut N and the loose fastening method will be described in more detail with reference to FIGS. 9 to 13. The following description is merely an example, and the loose fastening mechanism M and the loose fastening method of the locknut N of the present invention are not limited to the following structures and the following methods.

図９は、本実施形態の弛緩締結機構Ｍが取り付けられる前のロール機１を示す概略図である。図９においては、ロックナットＮは締結状態である。まず、この状態からロックナットＮを弛緩する方法について説明する。 FIG. 9 is a schematic view showing the roll machine 1 before the relaxation fastening mechanism M of the present embodiment is attached. In FIG. 9, the locknut N is in the fastened state. First, a method of relaxing the locknut N from this state will be described.

図９の状態から、図１０に示されるように、ロール機１にロールＲを固定するためのロックナットＮに、外周に歯部２３を有した着脱可能なリング状ギヤ２を固定する（リング状ギヤ２を固定する工程）。具体的には、リング状ギヤ２を作業者が持ち、ロールＲの端部にロール軸の端部よりも内径が大きいリング状ギヤ２を通す。リング状ギヤ２は環状かつ薄板状であるため、作業者は１人でもリング状ギヤ２を持ち上げてロールＲの端部に取り付けることが可能である。その後リング状ギヤ２をロックナットＮの端面Ｎａに当接させ、ロックナットＮの端面Ｎａに形成された孔と、リング状ギヤ２のギヤ固定部２２（図２参照）とを位置合わせする。その状態でギヤ固定部２２とロックナットＮの孔とにボルトＢを差し込み締結する。これにより、ロックナットＮとリング状ギヤ２とが一体化する。 From the state of FIG. 9, as shown in FIG. 10, a detachable ring-shaped gear 2 having a tooth portion 23 on the outer circumference is fixed to the lock nut N for fixing the roll R to the roll machine 1 (ring). Step of fixing the shape gear 2). Specifically, the operator holds the ring-shaped gear 2, and passes the ring-shaped gear 2 having an inner diameter larger than the end of the roll shaft through the end of the roll R. Since the ring-shaped gear 2 has an annular shape and a thin plate shape, even one operator can lift the ring-shaped gear 2 and attach it to the end of the roll R. After that, the ring-shaped gear 2 is brought into contact with the end face Na of the locknut N, and the hole formed in the end face Na of the locknut N is aligned with the gear fixing portion 22 (see FIG. 2) of the ring-shaped gear 2. In that state, the bolt B is inserted into the hole of the gear fixing portion 22 and the locknut N and fastened. As a result, the locknut N and the ring-shaped gear 2 are integrated.

つぎに、図１０の状態から図１１に示されるように、リング状ギヤ２の外周近傍においてロール機１に反力受け５を固定する（反力受け５を固定する工程）。本実施形態では、反力受け５は、チョックＣの端面Ｃａに取り付けられる。反力受け５は、チョックＣの端面Ｃａに等間隔で設けられた複数のボルトＢ２のうち、２つのボルトＢ２によってチョックＣに固定される（図２参照）。具体的には、たとえばチョックＣの端面Ｃａの下端部など、反力受け５を取り付ける位置を決定した後、チョックＣの端面Ｃａに締結されている既存のボルトＢ２を取り外す。そのボルトＢ２が取り外されたボルト孔の位置と、反力受け５の基部５１に設けられた長孔状のボルト孔Ｈの位置とを合わせて、反力受け５の位置合わせを行う。反力受け５の位置合わせが完了すると、ボルトＢ２を基部５１のボルト孔ＨおよびチョックＣの端面Ｃａのボルト孔に差し込み、ボルトＢ２を締結する。これにより、反力受け５がロール機１に固定される（図３に示される状態）。このとき、反力受け５において、受け部５２は基部５１の案内部５１ｂに固定されている。 Next, as shown in FIG. 11 from the state of FIG. 10, the reaction force receiver 5 is fixed to the roll machine 1 in the vicinity of the outer circumference of the ring-shaped gear 2 (step of fixing the reaction force receiver 5). In the present embodiment, the reaction force receiver 5 is attached to the end face Ca of the chock C. The reaction force receiver 5 is fixed to the chock C by two bolts B2 among a plurality of bolts B2 provided at equal intervals on the end face Ca of the chock C (see FIG. 2). Specifically, after determining the position to attach the reaction force receiver 5, such as the lower end of the end face Ca of the chock C, the existing bolt B2 fastened to the end face Ca of the chock C is removed. The position of the bolt hole from which the bolt B2 has been removed is aligned with the position of the elongated bolt hole H provided at the base 51 of the reaction force receiver 5, and the reaction force receiver 5 is aligned. When the alignment of the reaction force receiver 5 is completed, the bolt B2 is inserted into the bolt hole H of the base 51 and the bolt hole of the end surface Ca of the chock C, and the bolt B2 is fastened. As a result, the reaction force receiver 5 is fixed to the roll machine 1 (state shown in FIG. 3). At this time, in the reaction force receiving 5, the receiving portion 52 is fixed to the guide portion 51b of the base portion 51.

つぎに、図１１の状態から図１２に示されるように、反力受け５に、リング状ギヤ２の歯部２３と係合する噛合部３１を有する伝動部材３、および、伝動部材３が接続され、伝動部材３を駆動してリング状ギヤ２を回転させる駆動装置４を接続する（駆動装置を接続する工程）。具体的には、まず、伝動部材３を作業者が持ち、反力受け５に仮置きする。つぎに、駆動装置４の接続部４２を、反力受け５の受け部５２に設けられた貫通孔５２ａに挿通する（図３および図４参照）。接続部４２と貫通孔５２ａは上述したようにスプライン嵌合し、接続部４２の貫通孔５２ａへの軸方向の移動は可能であり、軸周り方向での回転は阻止する。接続部４２が貫通孔５２ａに挿通されると、駆動装置４の回転部４３を伝動部材３の取付部３２に取り付ける。これによって、弛緩締結機構Ｍのロール機１への取り付けが完了する。 Next, as shown in FIG. 12 from the state of FIG. 11, a transmission member 3 having a meshing portion 31 that engages with the tooth portion 23 of the ring-shaped gear 2 and a transmission member 3 are connected to the reaction force receiver 5. Then, the drive device 4 that drives the transmission member 3 to rotate the ring-shaped gear 2 is connected (step of connecting the drive device). Specifically, first, the operator holds the transmission member 3 and temporarily places it on the reaction force receiver 5. Next, the connecting portion 42 of the drive device 4 is inserted into the through hole 52a provided in the receiving portion 52 of the reaction force receiver 5 (see FIGS. 3 and 4). The connecting portion 42 and the through hole 52a are spline-fitted as described above, and the connecting portion 42 can move in the axial direction to the through hole 52a, and the rotation in the axial direction is prevented. When the connecting portion 42 is inserted through the through hole 52a, the rotating portion 43 of the drive device 4 is attached to the attachment portion 32 of the transmission member 3. As a result, the attachment of the relaxation fastening mechanism M to the roll machine 1 is completed.

つぎに、図１２の状態から、駆動装置４を駆動して、伝動部材３によってリング状ギヤ２を回転させ、リング状ギヤ２と固定されたロックナットＮを弛緩または締結させる（駆動工程）。駆動装置４の操作部を操作すると、駆動装置本体４１のモータが一方向に回転し、それにより駆動装置４の回転部４３が回転する。回転部４３が回転すると、回転部４３に接続された伝動部材３が回転部４３の回転軸周りに一方向に回転する。伝動部材３が一方向に回転すると、伝動部材３と噛み合うリング状ギヤ２が伝動部材３とは逆方向に回転する。リング状ギヤ２が回転すると、リング状ギヤ２が固定されたロックナットＮも回転して、図１３に示されるように、ロックナットＮが弛緩する。その後、駆動装置４および反力受け５をチョックＣから取り外し、リングギヤ２をロックナットＮから取り外すことにより、作業が完了する。なお、ロックナットＮを締結する際は、同様に、弛緩締結機構Ｍをロール機１に取り付け、図１３に示される状態から、駆動装置４をロックナットＮの弛緩時とは逆方向に回転駆動させて、ロックナットＮを締結した後、駆動装置４および反力受け５をチョックＣから外し、その後リング状ギヤ２をロックナットＮから取り外せばよい。 Next, from the state of FIG. 12, the drive device 4 is driven, the ring-shaped gear 2 is rotated by the transmission member 3, and the locknut N fixed to the ring-shaped gear 2 is loosened or fastened (driving step). When the operation unit of the drive device 4 is operated, the motor of the drive device main body 41 rotates in one direction, whereby the rotating unit 43 of the drive device 4 rotates. When the rotating portion 43 rotates, the transmission member 3 connected to the rotating portion 43 rotates in one direction around the rotation axis of the rotating portion 43. When the transmission member 3 rotates in one direction, the ring-shaped gear 2 that meshes with the transmission member 3 rotates in the direction opposite to that of the transmission member 3. When the ring-shaped gear 2 rotates, the locknut N to which the ring-shaped gear 2 is fixed also rotates, and the locknut N relaxes as shown in FIG. After that, the work is completed by removing the drive device 4 and the reaction force receiver 5 from the chock C and the ring gear 2 from the locknut N. Similarly, when fastening the locknut N, the relaxation fastening mechanism M is attached to the roll machine 1, and the drive device 4 is rotationally driven in the direction opposite to that when the locknut N is relaxed from the state shown in FIG. After fastening the locknut N, the drive device 4 and the reaction force receiver 5 may be removed from the chock C, and then the ring-shaped gear 2 may be removed from the locknut N.

このように、ロックナットＮを弛緩締結させる際に、大型の装置は一切不要である。また、ロックナットＮを弛緩締結させる際の作業者の作業としては、それぞれが軽量なリング状ギヤ２、反力受け５、伝動部材３、駆動装置４を取り付けて、駆動装置４を駆動させるだけである。そのため、作業者の作業負荷は非常に軽減され、ロックナットＮを弛緩締結させる際の時間も大幅に短縮する。また、ロックナットＮの弛緩締結に大型の装置が不要であるため導入コストが低く、かつ、既存のロール機１をほぼそのまま使用することができる。さらに、弛緩締結機構Ｍはロール機１に固定されて駆動装置４によって容易にロックナットＮを弛緩締結することができ、チョックＣをワイヤで固定したり、ロックナットＮの弛緩締結にワイヤを使う必要がない。そのため、作業場においてワイヤを操作するクレーンを用いる必要がなく、他の作業者がクレーンを使用している場合など、ワイヤを操作するクレーンを待つことによる時間の浪費も防ぐことができる。また、ワイヤを用いることによるワイヤの切断時やワイヤの固定部の離脱時などの事故の心配がなく安全である。 As described above, a large device is not required at all when the locknut N is loosely fastened. Further, as the work of the operator when loosely fastening the locknut N, each of them simply attaches a lightweight ring-shaped gear 2, a reaction force receiver 5, a transmission member 3, and a drive device 4 to drive the drive device 4. Is. Therefore, the work load of the operator is greatly reduced, and the time required for loosely fastening the locknut N is also significantly shortened. Further, since a large device is not required for loosening and fastening the locknut N, the introduction cost is low, and the existing roll machine 1 can be used almost as it is. Further, the loosening fastening mechanism M is fixed to the roll machine 1 and the locknut N can be loosely fastened by the drive device 4, and the chock C is fixed with a wire or a wire is used for loosening and fastening the locknut N. No need. Therefore, it is not necessary to use a crane for operating the wire in the workplace, and it is possible to prevent wasting time due to waiting for the crane for operating the wire, such as when another worker is using the crane. In addition, it is safe because there is no risk of accidents such as when the wire is cut or when the fixed portion of the wire is detached by using the wire.

また、本実施形態では、リング状ギヤ２がロックナットＮとは別体で着脱可能であり、かつ、既存のロール機１をほぼそのまま用いることができる。そのため、たとえば、トルクレンチなどの駆動装置４が壊れてしまった場合であっても、リング状ギヤ２をロックナットＮから取り外せば、従来の手作業でのロックナットＮの弛緩締結作業が可能である。したがって、上述した弛緩締結機構Ｍを用いた方法と、従来の方法とで、ロックナットＮの弛緩締結作業の選択性が担保されているため、万が一の事態が発生しても柔軟な対応が可能となる。 Further, in the present embodiment, the ring-shaped gear 2 can be attached and detached separately from the locknut N, and the existing roll machine 1 can be used almost as it is. Therefore, for example, even if the drive device 4 such as a torque wrench is broken, if the ring-shaped gear 2 is removed from the locknut N, the conventional manual loosening and fastening work of the locknut N is possible. be. Therefore, since the selectivity of the loose fastening work of the locknut N is guaranteed by the method using the loosening fastening mechanism M described above and the conventional method, it is possible to flexibly respond even in the unlikely event that a situation occurs. It becomes.

１圧延ロール機
２リング状ギヤ
２１リング状ギヤの端面
２２ギヤ固定部
２３歯部
３伝動部材
３０ギヤ部材
３１噛合部
３２取付部
４駆動装置
４１駆動装置本体
４２接続部
４３回転部
５反力受け
５１基部
５１ａ板状体
５１ｂ案内部
５１ｃ第１補強部材
５１ｄ第２補強部材
５１１底部
５１２側壁
５２受け部
５２ａ貫通孔
５２ｂ固定板
５２ｃ被接続板
Ｂボルト
Ｂ２ボルト
Ｃチョック
Ｃａチョックの端面
ＣＶ保護カバー
ＣＶ１第１保護カバー
ＣＶ２第２保護カバー
Ｅ係合部
ＦＳ雌ネジ部
Ｈボルト孔
Ｈ２長孔
Ｈ３挿通孔
Ｍ弛緩締結機構
ＭＳ雄ネジ部
Ｎロックナット
Ｎａロックナットの端面
Ｒロール
Ｔ１リング状ギヤの厚さ
Ｔ２ギヤ部材の軸方向の離間距離 1 Rolling roll machine 2 Ring-shaped gear 21 Ring-shaped gear end face 22 Gear fixing part 23 Tooth part 3 Transmission member 30 Gear member 31 Engagement part 32 Mounting part 4 Driver 41 Driver body 42 Connection part 43 Rotating part 5 Reaction force receiver 51 Base 51a Plate-like body 51b Guide part 51c First reinforcing member 51d Second reinforcing member 511 Bottom part 512 Side wall 52 Receiving part 52a Through hole 52b Fixing plate 52c Connected plate B Bolt B2 Bolt C Chock Ca Chock end face CV 1st protective cover CV2 2nd protective cover E Engagement part FS Female thread part H Bolt hole H2 Long hole H3 Insertion hole M Loosening fastening mechanism MS Male thread part N Lock nut Na Lock nut end face R roll T1 Ring gear thickness T2 Gear member axial separation distance

Claims

A ring-shaped gear that is detachably fixed to a locknut for fixing the roll and has teeth on the outer circumference,
A transmission member having a meshing portion that engages with the tooth portion of the ring-shaped gear so that the ring-shaped gear can rotate.
A drive device that is connected to the transmission member and drives the transmission member to rotate the ring-shaped gear.
In the vicinity of the outer circumference of the ring-shaped gear, the drive device is fixed to a roll machine that rotatably supports the roll, and the drive device can be connected so as to support the reaction force of the transmission member during rotation of the ring-shaped gear. Equipped with a force receiver
By driving the drive device, the transmission member rotates the ring-shaped gear, and the locknut fixed to the ring-shaped gear is loosened or fastened.
The transmission member is a gear, and the drive device has a connecting portion connected to the reaction force receiver and a rotating portion connected to the transmission member and rotating with respect to the connecting portion.
The reaction force receiver has a base portion fixed to the roll machine and a receiving portion that receives the reaction force when the ring-shaped gear is rotated by the transmission member.
The receiving portion has an engaging portion that engages with the outer periphery of the connecting portion and around the rotation axis of the rotating portion .
The connecting portion is connected to the receiving portion so as to be able to advance and retreat along the rotating shaft with respect to the engaging portion as the locknut is loosened or fastened and the ring-shaped gear moves in the axial direction. The locknut loosening fastening mechanism.

The receiving portion has a through hole through which the connection portion can be inserted and penetrates in the direction in which the rotation axis of the rotating portion extends, and the engaging portion has an engaging portion on the inner surface of the through hole.
The relaxation fastening mechanism according to claim 1, wherein the connecting portion can move forward and backward along the rotation axis with respect to the through hole.

The relaxation fastening mechanism according to claim 2, wherein the receiving portion is attached to the base portion so as to be adjustable in position in a direction in which the rotation shaft extends.

The reaction force receiver is attached to the end face of the chock of the roll machine,
The base is
A plate-like body extending along the end face of the chock and having a bolt hole through which a bolt provided on the end face of the chock can be inserted.
The relaxation fastening mechanism according to claim 3, further comprising a guide portion extending substantially perpendicular to the plate-like body and guiding the receiving portion in a position-adjustable manner.

The transmission member is composed of a plurality of gear members arranged apart from each other in the axial direction, and the distance between the plurality of gear members in the axial direction is smaller than the thickness of the ring-shaped gear.
2. The relaxation fastening mechanism described.

The process of fixing a removable ring-shaped gear with teeth on the outer circumference to the locknut for fixing the roll, and
A step of fixing the reaction force receiver to a roll machine that rotatably supports the roll in the vicinity of the outer circumference of the ring-shaped gear.
A transmission member having a meshing portion that engages with the tooth portion of the ring-shaped gear and the transmission member are connected to the reaction force receiver, and a driving device that drives the transmission member to rotate the ring-shaped gear. And the process of connecting
The driving device includes a driving step of driving the drive device, rotating the ring-shaped gear by the transmission member, and loosening or fastening the ring-shaped gear and the fixed locknut.
The transmission member is a gear, and the drive device has a connecting portion connected to the reaction force receiver and a rotating portion connected to the transmission member and rotating with respect to the connecting portion.
The reaction force receiver has a base portion fixed to the roll machine and a receiving portion that receives the reaction force when the ring-shaped gear is rotated by the transmission member.
The receiving portion has an engaging portion that engages with the outer periphery of the connecting portion and around the rotation axis of the rotating portion .
The connecting portion is connected to the receiving portion so as to be able to advance and retreat along the rotating shaft with respect to the engaging portion as the locknut is loosened or fastened and the ring-shaped gear moves in the axial direction. How to loosen and fasten the locknut.

The receiving portion has a through hole through which the connection portion can be inserted and penetrates in the direction in which the rotation axis of the rotating portion extends, and the engaging portion has an engaging portion on the inner surface of the through hole.
The relaxation fastening method according to claim 6, wherein the connecting portion can move forward and backward along the rotation axis with respect to the through hole.

The relaxation fastening method according to claim 7, wherein the receiving portion is attached to the base portion so as to be adjustable in position in a direction in which the rotation shaft extends.

The reaction force receiver is attached to the end face of the chock of the roll machine,
The base is
A plate-like body extending along the end face of the chock and having a bolt hole through which a bolt provided on the end face of the chock can be inserted.
The relaxation fastening method according to claim 8, further comprising a guide portion extending substantially perpendicular to the plate-like body and guiding the receiving portion in a position-adjustable manner.

The transmission member is composed of a plurality of gear members arranged apart from each other in the axial direction, and the distance between the plurality of gear members in the axial direction is smaller than the thickness of the ring-shaped gear.
6. The relaxation fastening method described.