JP5839285B2 - Transport device - Google Patents

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JP5839285B2
JP5839285B2 JP2012141657A JP2012141657A JP5839285B2 JP 5839285 B2 JP5839285 B2 JP 5839285B2 JP 2012141657 A JP2012141657 A JP 2012141657A JP 2012141657 A JP2012141657 A JP 2012141657A JP 5839285 B2 JP5839285 B2 JP 5839285B2
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carrier
driven
transport
fixed position
cam
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JP2014005114A (en
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西原 重善
重善 西原
慎 上田
慎 上田
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Daifuku Co Ltd
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Description

本発明は、搬送経路に沿って移動する搬送用走行体が、被搬送物の左右両側辺を各別に支持する左右一対のキャリアで構成された、搬送装置に関するものである。   The present invention relates to a transport apparatus in which a transport traveling body that moves along a transport path is configured by a pair of left and right carriers that separately support the left and right sides of a transported object.

一般的に搬送装置は、特許文献1にも記載されるように、被搬送物を支持する1台の搬送用走行体を例えば1つの推進用スクリューで駆動されるものであるが、自動車車体のような巾広で大型の被搬送物を搬送する搬送装置では、搬送経路に沿って移動する搬送用走行体が、1つの被搬送物の左右両側辺を各別に支持する、互いに連結一体化されていない左右一対のキャリアによって構成される場合がある。このような搬送用走行体を例えばスクリュー駆動により推進させる場合、左右一対の各キャリアを、互いに同期駆動される左右一対の推進用スクリューによって各別に駆動するのではなく、一方のキャリアのみを推進用スクリューで駆動し、他方のキャリアは、被搬送物を介して一方のキャリアに追従移動させる構成が考えられている。   Generally, as described in Patent Document 1, a transport device is one in which one transport traveling body that supports a transported object is driven by, for example, one propulsion screw. In such a conveying device that conveys a large and large object to be conveyed, the conveying traveling bodies that move along the conveying path are connected and integrated with each other, separately supporting the left and right sides of one object to be conveyed. In some cases, it is configured by a pair of left and right carriers that are not. When propelling such a transport traveling body by, for example, screw driving, the pair of left and right carriers are not driven by the pair of left and right propulsion screws that are driven synchronously with each other, but only one carrier is used for propulsion. A configuration in which the other carrier is driven by a screw and moved to follow one of the carriers via an object to be conveyed is considered.

特開2010−47399号公報JP 2010-47399 A

上記のように搬送用走行体が、1つの被搬送物の左右両側辺の一方を支持する駆動キャリアと、当該被搬送物の左右両側辺の他方を支持する従動キャリアから構成され、一方の駆動キャリアは、例えば搬送経路に沿って配設された推進用スクリューなどの推進手段により駆動し、他方の従動キャリアは、被搬送物を介して前記駆動キャリアと一体に従動走行するように構成された搬送装置において、何らかの原因で推進手段が非常停止されたような場合、その直前の走行速度が高速であればあるほど、従動キャリア側に作用する慣性力、即ち、停止しょうとする被搬送物に対して従動キャリアが先へ進もうとする慣性力が非常に大きくなる。従って、従動キャリア上の位置決めピンが被搬送物に設けられたピン孔に嵌合するような位置決め構造が採用されているような場合には、当該位置決め構造部分に大きな負荷が作用し、位置決め構造の破損につながる恐れもある。   As described above, the transport traveling body is composed of the drive carrier that supports one of the left and right sides of one transported object and the driven carrier that supports the other of the left and right sides of the transported object. The carrier is driven by propulsion means such as a propulsion screw disposed along the conveyance path, for example, and the other driven carrier is configured to follow and drive integrally with the drive carrier via the conveyed object. In the transport device, when the propulsion means is stopped for some reason, the higher the traveling speed immediately before that, the more the inertial force acting on the driven carrier side, that is, the transported object to be stopped. On the other hand, the inertial force that the driven carrier tries to move forward becomes very large. Therefore, when a positioning structure is employed in which the positioning pin on the driven carrier is fitted into the pin hole provided in the conveyed object, a large load acts on the positioning structure portion, and the positioning structure May lead to damage.

本発明は、上記のような従来の問題点を解消することのできる搬送装置を提案するものであって、請求項1に記載の本発明に係る搬送装置は、後述する実施例との関係を理解し易くするために、当該実施例の説明において使用した参照符号を括弧付きで付して示すと、搬送経路に沿って移動する搬送用走行体(1)が、1つの被搬送物(W)の左右両側辺の一方を支持する駆動キャリア(6A)と、当該被搬送物(W)の左右両側辺の他方を支持する従動キャリア(6B)から構成され、一方の駆動キャリア(6A)は、推進手段(例えば推進用スクリュー(9))により駆動し、他方の従動キャリア(6B)は、被搬送物(W)を介して前記駆動キャリア(6A)と一体に従動走行するように構成された搬送装置であって、前記従動キャリア(6B)は、キャリア案内用レール(8B)に支持されたキャリア本体(12)と、当該キャリア本体(12)に対し走行方向と平行な方向に一定範囲内で移動自在に支持された被搬送物支持手段(13)によって構成され、この被搬送物支持手段(13)を前記キャリア本体(12)に対し定位置に保持する保持手段(36)が併設され、この保持手段(36)は、被搬送物に対し前記キャリア本体(12)に一定以上の慣性力が走行方向に作用したときに保持が解除される構成である搬送装置において、
前記保持手段(36)には、一定以上の慣性力を受けて前記定位置から外れたキャリア本体(12)を元の定位置に戻す戻し用付勢手段(43)が併設された構成になっている。
The present invention proposes a transport apparatus that can solve the above-described conventional problems, and the transport apparatus according to the present invention is related to the embodiments described later. For ease of understanding, when the reference numerals used in the description of the embodiment are shown in parentheses, the traveling body for transportation (1) that moves along the transportation path has one transported object (W ) And a driven carrier (6B) supporting the other of the left and right sides of the object to be transported (W). The other driven carrier (6B) is driven by a propulsion means (for example, a propulsion screw (9)), and the other driven carrier (6B) is configured to follow and drive integrally with the drive carrier (6A) via the conveyed object (W). a conveying apparatus, the driven carrier (6B) is supported on a carrier guide rail (8B) calibration Consists of a rear body (12) and an object support means (13) supported by the carrier body (12) so as to be movable within a certain range in a direction parallel to the traveling direction. Holding means (36) for holding (13) in a fixed position with respect to the carrier body (12) is provided, and this holding means (36) has a certain degree of inertia in the carrier body (12) with respect to an object to be conveyed. In the transport device that is configured to release the holding when the force acts in the traveling direction ,
The holding means (36) is provided with a return biasing means (43) for returning the carrier main body (12), which has received an inertia force of a certain level or more from the fixed position, to the original fixed position. ing.

尚、前記被搬送物支持手段(13)が前後一対の被搬送物支持具(13a,13b)で構成される場合、キャリア本体(12)に対し走行方向一定範囲内で移動自在に支持された可動台に対して前記前後一対の被搬送物支持具(13a,13b)を取り付け、前記可動台とキャリア本体(12)との間に前記保持手段(36)を介装させることも可能であるが、請求項2に記載のように、これら前後一対の被搬送物支持具(13a,13b)各々を、キャリア本体(12)に対し走行方向と平行な方向に一定範囲内で移動自在に支持させると共に前記保持手段(36)によって定位置に保持するように構成することが出来る。   When the transported object support means (13) is composed of a pair of front and rear transported object support tools (13a, 13b), the carrier body (12) is supported movably within a certain range in the traveling direction. It is also possible to attach the pair of front and rear transport object supports (13a, 13b) to the movable base and to interpose the holding means (36) between the movable base and the carrier body (12). However, as described in claim 2, each of the pair of front and rear transport object supports (13a, 13b) is supported so as to be movable within a certain range in a direction parallel to the traveling direction with respect to the carrier body (12). And can be configured to be held at a fixed position by the holding means (36).

又、請求項3に記載のように、前記保持手段(36,45)は、互いに隣接する被搬送物支持手段(13)側とキャリア本体(12)側の一方に設けられた凹部(40,50a)と、この凹部(40,50a)に対し嵌脱自在に他方に支持された係止具(39,48)と、この係止具(39,48)を前記凹部(40,50a)内に嵌合させる方向に付勢するスプリング(41,49)から構成することが出来る。更に、請求項4に記載のように、前記戻し用付勢手段(43)は、キャリア本体(12)を定位置方向に付勢するスプリング(44)によって構成することが出来るし、請求項5に記載のように、前記保持手段(45)の係止具は、カム従動ローラー(48)から構成し、前記戻し用付勢手段(51)は、前記凹部(50a)から離脱した前記カム従動ローラー(48)を受けるカム面(50b)と、前記カム従動ローラー(48)を凹部(50a)内に嵌合させる方向に付勢する前記スプリング(49)によって構成し、前記凹部(50a)から離脱した前記カム従動ローラー(48)が前記スプリング(49)による付勢力で前記カム面(50b)に圧接することにより、定位置から外れたキャリア本体(12)が元の定位置に戻されるように構成することが出来る。 According to a third aspect of the present invention, the holding means (36, 45) is a recess (40, 45) provided on one of the object support means (13) side and the carrier body (12) side adjacent to each other . 50a) , a locking tool (39, 48) supported on the other side of the recess (40 , 50a) so as to be detachable, and the locking tool (39, 48) in the recess (40, 50a) . It can be constituted by springs (41, 49) that are urged in the direction to be fitted to. Further, as described in claim 4, the return urging means (43) can be constituted by a spring (44) for urging the carrier body (12) in a fixed position direction. as described, locking member of said holding means (45) constitutes a cam follower roller (48), the return for the biasing means (51), said cam follower which is disengaged from the recess (50a) The cam surface (50b) that receives the roller (48) and the spring (49) that urges the cam follower roller (48) in a direction to fit the recess (50a). When the detached cam driven roller (48) is pressed against the cam surface (50b) by the urging force of the spring (49), the carrier body (12) deviated from the fixed position is returned to the original fixed position. Can be configured.

請求項1に記載の本発明の構成によれば、駆動キャリアを駆動する推進用スクリューなどの推進手段が何らかの異常事態により、通常の減速停止制御によらずに定常運転速度から非常停止されたような場合、当該駆動キャリアとの間で被搬送物を支持している従動キャリアは、前記駆動キャリアと連結一体化されていないので、被搬送物(駆動キャリア)に対して走行方向前方に慣性力で移動を継続しようとする。このとき、従動キャリアの被搬送物支持手段は被搬送物と一体に停止しようとし、当該従動キャリアのキャリア本体が前記被搬送物支持手段に対して前方に慣性力で進もうとするので、このときに前記保持手段の保持が解除されるように当該保持手段の保持力を設定しておけば、被搬送物と従動キャリアとの間に過大な負荷が作用するのを、被搬送物支持手段とキャリア本体との間の相対移動により回避出来る。換言すれば、定常運転速度が高速であっても、非常停止時に被搬送物と従動キャリアとの間の位置決め構造に過大な負荷が作用して破損するような事態を未然に回避出来る。   According to the configuration of the present invention as set forth in claim 1, the propulsion means such as the propulsion screw for driving the drive carrier seems to have been emergency stopped from the normal operation speed without any normal deceleration stop control due to some abnormal situation. In this case, since the driven carrier that supports the object to be conveyed with the drive carrier is not connected and integrated with the drive carrier, the inertial force is forward in the traveling direction with respect to the object to be conveyed (drive carrier). Try to continue moving. At this time, the transported object support means of the driven carrier tends to stop integrally with the transported object, and the carrier body of the driven carrier tends to move forward with inertial force relative to the transported object support means. If the holding force of the holding means is set so that the holding of the holding means is sometimes released, an excessive load acts between the transferred object and the driven carrier. Can be avoided by relative movement between the carrier body and the carrier body. In other words, even if the steady operation speed is high, it is possible to avoid a situation in which an excessive load is applied to the positioning structure between the conveyed object and the driven carrier during an emergency stop, resulting in damage.

被搬送物が自動車車体のような大型の場合、一般的にはその左右両側辺の前後2箇所を支持して搬送することになるが、このような場合に請求項2に記載の構成によれば、前後一対の被搬送物支持具を支持できる大型の可動台を従動キャリア側に設ける必要がなく、又、前後一対の被搬送物支持具毎に保持手段を設ければ良いので、各保持手段をコンパクトに構成することが容易になり、装置全体を安価に実施することが出来る。   When the object to be transported is large like an automobile body, it is generally transported while supporting two front and rear sides of the left and right sides. In such a case, the structure according to claim 2 is used. For example, it is not necessary to provide a large movable base on the driven carrier side that can support a pair of front and rear transport object supports, and holding means may be provided for each pair of front and rear transport object supports. It becomes easy to make the means compact, and the entire apparatus can be implemented at low cost.

更に、請求項3に記載の構成によれば、保持手段として軸受け構造が不要であり、単に係止具として例えば金属製球体を可動部品として使用するだけで、保持手段を簡単且つ安価に実施することが出来る。勿論、併用するスプリングの初期応力を調整可能にして、キャリア本体に対する被搬送物支持手段の定位置保持力を自在に調整可能にすることも出来る。   Further, according to the configuration of the third aspect, no bearing structure is required as the holding means, and the holding means is simply and inexpensively implemented simply by using, for example, a metal sphere as a movable part as a locking tool. I can do it. Of course, the initial stress of the spring to be used together can be adjusted, and the fixed position holding force of the object support means with respect to the carrier body can be freely adjusted.

又、請求項1に記載の本発明の構成によれば、非常停止時に従動キャリアのキャリア本体と被搬送物支持手段とを自動的に切り離して、その両者間に過大な負荷が作用するのを防止出来るだけでなく、キャリア本体側に作用する慣性力が弱まった時には、互いに切り離された被搬送物支持手段とキャリア本体とを元の定位置に相対的に自動復帰させて保持させることが出来るので、非常停止後の再稼働に特別な作業が不要になる。この場合、請求項4に記載の構成によれば、極めて簡単容易に本発明の構成を実施することが出来る。又、請求項5に記載の構成によれば、保持手段を構成する凹部、係止具、及びスプリングにカム面を追加するだけで、更に簡単容易に本発明の構成を実施することが出来る。 Further, according to the configuration of the present invention described in claim 1, the carrier body of the driven carrier and the transported object supporting means are automatically separated at the time of emergency stop, and an excessive load acts between them. Not only can this be prevented, but also when the inertial force acting on the carrier body side weakens, the object support means and the carrier body separated from each other can be automatically returned to their original fixed positions and held. Therefore, no special work is required for restarting after an emergency stop. In this case, according to the configuration described in claim 4 , the configuration of the present invention can be implemented very easily and easily. Moreover, according to the structure of Claim 5 , the structure of this invention can be implemented still more simply and easily only by adding a cam surface to the recessed part, latching tool, and spring which comprise a holding means.

図1は、搬送装置全体の構成を説明する図であって、図1Aは平面図、図1Bは側面図である。1A and 1B are diagrams for explaining the overall configuration of the transport apparatus, in which FIG. 1A is a plan view and FIG. 図2は、スクリュー駆動エリアの縦断正面図である。FIG. 2 is a longitudinal front view of the screw drive area. 図3は、図1Aの要部の拡大詳細図である。FIG. 3 is an enlarged detail view of the main part of FIG. 1A. 図4Aは、駆動キャリアを内側から見た側面図であり、図4Bは、その拡大正面図である。FIG. 4A is a side view of the drive carrier as viewed from the inside, and FIG. 4B is an enlarged front view thereof. 図5Aは、従動キャリアを内側から見た側面図であり、図5Bは、その拡大正面図である。FIG. 5A is a side view of the driven carrier as viewed from the inside, and FIG. 5B is an enlarged front view thereof. 図6は、従動キャリアにおける被搬送物支持手段とキャリア本体との間の保持手段を示す一部横断平面図である。FIG. 6 is a partial cross-sectional plan view showing the holding means between the object support means and the carrier body in the driven carrier. 図7は、同上保持手段を示す縦断正面図である。FIG. 7 is a longitudinal front view showing the holding means. 図8は、同上保持手段の別の実施例を示す一部横断平面図である。FIG. 8 is a partially cross-sectional plan view showing another embodiment of the holding means. 図9は、図8に示す保持手段の動作状態を示す一部横断平面図である。FIG. 9 is a partial cross-sectional plan view showing the operating state of the holding means shown in FIG.

図1において、1は搬送用走行体であって、上側のスクリュー駆動エリア2において被搬送物Wを搬送する。このスクリュー駆動エリア2には、等間隔おきに作業ステーションが設定されており、各作業ステーションで停止した搬送用走行体1上に被搬送物Wに対して所定の作業が行われる。スクリュー駆動エリア2の下側には、当該スクリュー駆動エリア2と平行に戻し経路3が設けられ、スクリュー駆動エリア2の終端部には、このスクリュー駆動エリア2から送り出される搬送用走行体1を受け取って戻し経路3まで降下させると共に当該戻し経路3へ搬送用走行体1を送り込む昇降台4aを備えた搬送用走行体降下手段4が設けられ、スクリュー駆動エリア2の始端部には、戻し経路3から送り出される搬送用走行体1を受け取ってスクリュー駆動エリア2まで上昇させると共に当該スクリュー駆動エリア2へ搬送用走行体1を送り込む昇降台5aを備えた搬送用走行体上昇手段5が設けられている。   In FIG. 1, reference numeral 1 denotes a transporting traveling body, which transports an object W to be transported in an upper screw drive area 2. In the screw drive area 2, work stations are set at regular intervals, and a predetermined work is performed on the object to be transported W on the transport traveling body 1 stopped at each work station. A return path 3 is provided below the screw drive area 2 in parallel with the screw drive area 2, and the traveling body 1 for conveyance sent from the screw drive area 2 is received at the end of the screw drive area 2. A transport traveling body lowering means 4 having a lifting platform 4a for lowering the transport path 1 to the return path 3 and feeding the transport traveling body 1 to the return path 3 is provided. A transport traveling body raising means 5 is provided, which includes a lifting platform 5 a that receives the transport traveling body 1 sent out from the head and raises it to the screw drive area 2 and feeds the transport traveling body 1 to the screw drive area 2. .

図2〜図5に示すように、搬送用走行体1は、左右一対のキャリア、即ち、駆動キャリア6Aと従動キャリア6Bから構成されている。一方、スクリュー駆動エリア2には、被搬送物搬送経路を挟むように左右一対の作業床7A,7Bが架設され、これら各作業床7A,7Bに、キャリア案内用レール8A,8Bが架設されると共に、駆動キャリア6A側の作業床7Aには推進用スクリュー9が架設されている。キャリア案内用レール8A,8Bは、下側の支持用レール10と上側の振れ止め用レール11とから構成されている。各キャリア6A,6Bは、キャリア案内用レール8A,8Bの下側の支持用レール10と上側の振れ止め用レール11との間で且つこれら各レール10,11より外側に配置されたキャリア本体12に、1つの被搬送物Wの左右両側辺を各別に支持する被搬送物支持手段13を取り付けたものであり、被搬送物支持手段13は、キャリア本体12から下側の支持用レール10の内側に垂下するように連設された垂直支柱部材14a,14bの下端内側に取り付けられた前後一対の被搬送物支持具13a,13bから構成されている。   As shown in FIGS. 2-5, the traveling body 1 for conveyance is comprised from the left-right paired carrier, ie, the drive carrier 6A, and the driven carrier 6B. On the other hand, in the screw drive area 2, a pair of left and right work floors 7A and 7B are installed so as to sandwich the transfer object conveyance path, and carrier guide rails 8A and 8B are installed on these work floors 7A and 7B. At the same time, a propulsion screw 9 is installed on the work floor 7A on the drive carrier 6A side. The carrier guide rails 8A and 8B are composed of a lower support rail 10 and an upper steadying rail 11. Each carrier 6A, 6B has a carrier body 12 arranged between the lower support rail 10 and the upper steadying rail 11 on the carrier guide rails 8A, 8B and outside the rails 10, 11. In addition, to-be-conveyed object support means 13 for attaching the left and right sides of one to-be-conveyed object W is attached, and the to-be-conveyed object support means 13 is connected to the lower support rail 10 from the carrier body 12. It consists of a pair of front and rear conveyed object supports 13a and 13b attached to the lower end inside of the vertical column members 14a and 14b that are continuously provided so as to hang down inward.

又、各キャリア6A,6Bのキャリア本体12には、下側の支持用レール10上を転動する前後一対の支持用車輪15a,15b、当該支持用レール10の下側辺内側を転動するように前記垂直支柱部材14a,14bの下端から連設された軸受け板16a,16bに垂直軸周りに回転自在に軸支された前後一対の内側位置決め用ローラー17a,17b、支持用レール10の上側辺外側を転動するようにキャリア本体12の下端に垂直軸周りに回転自在に軸支された前後一対の外側位置決め用ローラー18a,18b、上側の振れ止め用レール11の下側辺を左右両側から挟む、それぞれ垂直軸周りに回転自在な前後一対の位置決め用ローラー19a,19b及び20a,20bが設けられている。この構成により、駆動キャリア6Aは、一定姿勢を維持しながらキャリア案内用レール8Aに沿って移動自在となり、従動キャリア6Bは、一定姿勢を維持しながらキャリア案内用レール8Bに沿って移動自在となっている。   Further, the carrier body 12 of each carrier 6A, 6B rolls on the lower side inner side of a pair of front and rear support wheels 15a, 15b that roll on the lower support rail 10 and the support rail 10. As described above, a pair of front and rear inner positioning rollers 17a and 17b supported on bearing plates 16a and 16b provided continuously from the lower ends of the vertical support members 14a and 14b so as to be rotatable about the vertical axis, and the upper side of the support rail 10 A pair of front and rear outer positioning rollers 18a and 18b rotatably supported around the vertical axis at the lower end of the carrier body 12 so as to roll on the outer side, and the lower side of the upper steadying rail 11 on the left and right sides A pair of front and rear positioning rollers 19a and 19b and 20a and 20b, which are respectively rotatable around a vertical axis, are provided. With this configuration, the drive carrier 6A can move along the carrier guide rail 8A while maintaining a fixed posture, and the driven carrier 6B can move along the carrier guide rail 8B while maintaining a fixed posture. ing.

尚、下側の支持用レール10は、各作業床7A,7B上に支持された基台21の内側辺に取り付けられ、上側の振れ止め用レール11は、基台21の外側辺上に立設されて内側に折曲する片持ち状の支持フレーム22の内端に取り付けられ、推進用スクリュー9は、前記基台21、駆動キャリア6Aのキャリア本体12の走行経路、及び支持フレーム22で囲まれた領域内に位置するように、基台21上に支承されている。そして駆動キャリア6Aのキャリア本体12には、推進用スクリュー9に係合する、走行方向に適当間隔おきに直列する3つの被動ローラー23a〜23cが取り付けられている。   The lower support rail 10 is attached to the inner side of the base 21 supported on the work floors 7A and 7B, and the upper steadying rail 11 stands on the outer side of the base 21. The propulsion screw 9 is surrounded by the base 21, the travel path of the carrier body 12 of the drive carrier 6 </ b> A, and the support frame 22. The propulsion screw 9 is attached to the inner end of the cantilevered support frame 22. It is supported on the base 21 so as to be located in the region. Then, three driven rollers 23 a to 23 c that are engaged with the propulsion screw 9 and are arranged in series at appropriate intervals in the traveling direction are attached to the carrier body 12 of the drive carrier 6 </ b> A.

推進用スクリュー9は、図3に示すように、両端が軸受け24a,24bによって一直線上に支持された単位長さのスクリュー単体25と、隣り合うスクリュー単体25どうしを連動連結する連結手段26a,26bによって構成され、図2に仮想線で示すように、作業床7Aの下側に配設された減速機付きモーター27に伝動手段28を介して連動連結されている。駆動キャリア6Aが備える被動ローラー23a〜23cは、その内の1つ又は2つの被動ローラーがスクリュー単体25間の空間を通過する状況においても、他の少なくとも1つの被動ローラーが何れかのスクリュー単体25に係合するように間隔を定めて設けられており、推進用スクリュー9の正回転により駆動キャリア6Aを、各被動ローラー23a〜23cを介して連続走行させることが出来るが、スクリュー単体25の長さや各スクリュー単体25間の空間の長さによっては、2つの被動ローラーでも目的を達成出来る。   As shown in FIG. 3, the propulsion screw 9 has a unit length screw unit 25 supported at both ends in a straight line by bearings 24a and 24b, and connecting means 26a and 26b for interlockingly connecting adjacent screw units 25 to each other. As shown in phantom lines in FIG. 2, the motor 27 with a speed reducer disposed on the lower side of the work floor 7 </ b> A is interlocked and connected via a transmission means 28. The driven rollers 23 a to 23 c included in the drive carrier 6 </ b> A include any one screw unit 25, even in a situation where one or two of the driven rollers pass through the space between the screw units 25. The drive carrier 6A can be continuously run through the driven rollers 23a to 23c by the forward rotation of the propulsion screw 9, but the length of the screw unit 25 is long. Depending on the length of the space between each screw unit 25, the purpose can be achieved with two driven rollers.

従動キャリア6Bには、これを推進させる駆動手段が設けられておらず、駆動キャリア6Aの被搬送物支持手段13を構成する前後一対の被搬送物支持具13a,13bと、従動キャリア6Bの被搬送物支持手段13を構成する前後一対の被搬送物支持具13a,13bとで支持する1つの被搬送物Wを介して、駆動キャリア6Aと一体に追従走行することになる。従って、推進用スクリュー9の正回転駆動により、駆動キャリア6Aと従動キャリア6Bから成る搬送用走行体1が、左右一対のキャリア案内用レール8A,8Bで形成されるスクリュー駆動エリア2の搬送経路に沿って前進走行し、被搬送物Wがスクリュー駆動エリア2をその始端側から終端側へ搬送されることになる。   The driven carrier 6B is not provided with a driving means for propelling the driven carrier 6B, and the pair of front and rear transport object supports 13a and 13b constituting the transported object support means 13 of the drive carrier 6A and the driven carrier 6B. The vehicle travels integrally with the drive carrier 6A through one transported object W supported by a pair of transported object supporters 13a and 13b that constitute the transported object support means 13. Accordingly, the forward traveling drive of the propulsion screw 9 causes the transport traveling body 1 composed of the drive carrier 6A and the driven carrier 6B to enter the transport path of the screw drive area 2 formed by the pair of left and right carrier guide rails 8A and 8B. Then, the object W travels forward along the screw drive area 2 and is conveyed from the start side to the end side.

台車推進用スクリュー9によってスクリュー駆動エリア2内の最終作業ステーションから送り出される搬送用走行体1は、搬送用走行体降下手段4の上昇限位置で待機している昇降台4a上に送り込まれると共に、当該昇降台4aが備える引込み送出し用摩擦駆動輪4bによって当該昇降台4a上の所定位置まで引き込まれ、この後、当該昇降台4aが下降限位置まで降下して戻し経路3の始端位置と接続される。搬送用走行体1上の被搬送物Wは、例えば昇降台4aが上昇限位置にあるとき、又は昇降台4aが下降限位置にあるときに、搬送用走行体1上からスクリュー駆動エリア2又は戻し経路3のある側とは反対側へ送出させれば良い。下降限位置にある昇降台4a上の空の搬送用走行体1は、前記引込み送出し用摩擦駆動輪4bの逆回転により昇降台4a上から戻し経路3に送り出すことが出来る。この戻し経路3にも、スクリュー駆動エリア2に設けられた左右一対の搬送用走行体案内用レール8A,8Bと同一の左右一対の搬送用走行体案内用レール30A,30Bと、図示省略しているが、高速で搬送用走行体1を走行駆動することが出来ると共にストレージ可能な摩擦駆動手段が設けられており、この戻し経路3に送り込まれた空の搬送用走行体1は、前記摩擦駆動手段により高速で当該戻し経路3の終端側へ走行駆動され、当該戻し経路3の終端から順次上手側にストレージされる。   The transport traveling body 1 sent out from the final work station in the screw drive area 2 by the cart propulsion screw 9 is sent onto the lifting platform 4a waiting at the ascending limit position of the transport traveling body lowering means 4, and The lifting / lowering platform 4a is pulled in to a predetermined position on the lifting platform 4a by the pull-in / feed friction drive wheel 4b, and then the lifting platform 4a is lowered to the lower limit position and connected to the start position of the return path 3 Is done. For example, when the lifting platform 4a is in the ascending limit position or when the lifting platform 4a is in the descending limit position, the article W to be transported on the transporting traveling body 1 is What is necessary is just to send to the opposite side to the side with the return path | route 3. The empty transporting traveling body 1 on the lifting platform 4a at the lower limit position can be sent out from the lifting platform 4a to the return path 3 by the reverse rotation of the pull-in / feed friction drive wheel 4b. The return path 3 also includes a pair of left and right transport traveling body guide rails 30A and 30B that are the same as the pair of left and right transport traveling body guide rails 8A and 8B provided in the screw drive area 2. However, there is provided friction drive means that can drive and store the transport traveling body 1 at a high speed, and the empty transport traveling body 1 sent to the return path 3 has the friction drive. The vehicle is driven to travel toward the end of the return path 3 at a high speed by the means, and is sequentially stored from the end of the return path 3 to the upper side.

搬送用走行体上昇手段5の昇降台5aが下降限位置まで降下して戻し経路3の終端と接続状態になると、戻し経路3の終端の摩擦駆動手段により先頭の空の搬送用走行体1が昇降台5a上に送り出されると共に、当該昇降台5aが備える引込み送出し用摩擦駆動輪5bによって当該昇降台5a上の所定位置まで引き込まれ、この後、当該昇降台5aが上昇限位置まで上昇してスクリュー駆動エリア2の始端位置と接続される。スクリュー駆動エリア2内の各作業ステーションにおいて作業を行う対象の被搬送物Wは、例えば昇降台5aが上昇限位置にあるとき、又は昇降台5aが下降限位置にあるときに、スクリュー駆動エリア2又は戻し経路3のある側とは反対側から昇降台5a上の搬送用走行体1上へ移載すれば良い。   When the lifting platform 5a of the transport traveling body raising means 5 is lowered to the lower limit position and is connected to the end of the return path 3, the leading empty transport traveling body 1 is moved by the friction drive means at the end of the return path 3. While being sent out on the lifting platform 5a, it is drawn to a predetermined position on the lifting platform 5a by the pull-in / feed friction drive wheel 5b provided on the lifting platform 5a, and then the lifting platform 5a is raised to the upper limit position. And connected to the start position of the screw drive area 2. For example, when the lifting platform 5a is in the ascending limit position or the lifting platform 5a is in the descending limit position, the object to be transported W to be operated at each work station in the screw driving area 2 is the screw driving area 2. Or what is necessary is just to transfer on the traveling body 1 for conveyance on the lifting platform 5a from the opposite side to the side with the return path | route 3.

尚、搬送用走行体1に対して被搬送物Wの積み下ろし作業を行うとき、この搬送用走行体1を構成する左右一対の互いに連結一体化されていない駆動キャリア6Aと従動キャリア6Bとが相対的に前後移動して位置ずれしないように、これら各キャリア6A,6Bを定位置に位置決めしなければならない。この場合、経路脇に配設したクランプ機構により各キャリア6A,6Bに設けられた被挟持部を挟持させることが出来るが、駆動キャリア6Aの被挟持部としては被動ローラー23a〜23cの内の1つ、例えば中央の被動ローラー23bを利用し、従動キャリア6Bには、図示のように駆動キャリア6Aの被動ローラー23bと対称の位置に、前記被挟持部として、前記被動ローラー23a〜23cと同一構造の被挟持用ローラー31を取り付けておくことが出来る。   In addition, when carrying out the operation of unloading the transported object W on the transport traveling body 1, the pair of left and right drive carriers 6A and the driven carrier 6B that constitute the transport traveling body 1 are not relative to each other. Therefore, these carriers 6A and 6B must be positioned at fixed positions so as not to move forward and backward. In this case, the clamped portion provided on each of the carriers 6A and 6B can be clamped by the clamp mechanism disposed on the side of the path, but the clamped portion of the drive carrier 6A is one of the driven rollers 23a to 23c. For example, using the center driven roller 23b, the driven carrier 6B has the same structure as the driven rollers 23a to 23c as the clamped portion at a position symmetrical to the driven roller 23b of the drive carrier 6A as shown in the figure. The nipping roller 31 can be attached.

以上のように構成され且つ使用される搬送装置に採用した本発明の構成を説明すると、図5〜図7に示すように、従動キャリア6Bにおける被搬送物支持手段13を構成する前後一対の被搬送物支持具13a,13bが取り付けられている垂直支柱部材14a,14bは、直接従動キャリア6Bのキャリア本体12に取り付けられるのではなく、特別な取付け手段32a,32bを介してキャリア本体12に取り付けられている。これら前後一対の取付け手段32a,32bは、互いに同一構造のものであって、それぞれ、従動キャリア6Bのキャリア本体12の内側に取り付けられた前後一対の支持アーム33a,33b、これら前後一対の支持アーム33a,33b間に水平前後方向に架設された上下一対のガイドロッド34a,34b、前記垂直支柱部材14a,14bの上端に取り付けられて前記上下一対のガイドロッド34a,34bに水平前後方向にスライド自在に支持された可動体35、及びこの可動体35と垂直支柱部材14a,14bを介して被搬送物支持具13a,13bを定位置に保持する保持手段36から構成されている。 The configuration of the present invention employed in the transport apparatus configured and used as described above will be described. As shown in FIGS. 5 to 7, a pair of front and rear objects constituting the transported object support means 13 in the driven carrier 6B is illustrated. The vertical support members 14a and 14b to which the conveyed product supports 13a and 13b are attached are not directly attached to the carrier body 12 of the driven carrier 6B, but are attached to the carrier body 12 via special attachment means 32a and 32b. It has been. The pair of front and rear attachment means 32a and 32b have the same structure as each other, and are respectively a pair of front and rear support arms 33a and 33b attached to the inside of the carrier body 12 of the driven carrier 6B. A pair of upper and lower guide rods 34a, 34b installed in the horizontal front-rear direction between 33a, 33b and the upper ends of the vertical support members 14a, 14b are attached to the pair of upper and lower guide rods 34a, 34b to be slidable in the horizontal front-rear direction. And a holding means 36 that holds the object support tools 13a and 13b in place through the movable body 35 and the vertical support members 14a and 14b.

前記保持手段36は、前記可動体35の移動方向と平行な側面に隣接するように従動キャリア6Bのキャリア本体12の側面に取り付けられたベース部材37、前記可動体35の移動方向と平行な側面に対して直交する水平左右向きにベース部材37に取り付けられたスプリングボールユニット38、及びこのスプリングボールユニット38が備える金属製球体から成る係止具39が嵌合するように、前記可動体35の移動方向と平行な側面に形成された円錐状の凹部40から構成されている。スプリングボールユニット38には、係止具39を突出位置に付勢保持する圧縮コイルスプリング41が内装されている。又、前記凹部40は、可動体35の側面に直接刻設しても良いが、図示の構成では、凹部40が刻設されたブロック40aを可動体35に表面面一に埋設している。尚、前後一対の支持アーム33a,33bには、上下一対のガイドロッド34a,34b間において、可動体35のスライド範囲を規制するストッパー42を取り付けることが出来る。   The holding means 36 includes a base member 37 attached to a side surface of the carrier body 12 of the driven carrier 6B so as to be adjacent to a side surface parallel to the moving direction of the movable body 35, and a side surface parallel to the moving direction of the movable body 35. Of the movable body 35 so that a spring ball unit 38 attached to the base member 37 in a horizontal horizontal direction perpendicular to the base member 37 and a locking tool 39 made of a metal sphere provided in the spring ball unit 38 are fitted. It is comprised from the conical recessed part 40 formed in the side surface parallel to a moving direction. The spring ball unit 38 includes a compression coil spring 41 that biases and holds the locking tool 39 in the protruding position. The recess 40 may be directly engraved on the side surface of the movable body 35. However, in the configuration shown in the figure, the block 40a in which the recess 40 is engraved is embedded in the movable body 35 on the same surface. A stopper 42 that restricts the sliding range of the movable body 35 can be attached to the pair of front and rear support arms 33a and 33b between the pair of upper and lower guide rods 34a and 34b.

上記構成によれば、通常は、前後一対の被搬送物支持具13a,13bが垂直支柱部材14a,14bと保持手段36を介して従動キャリア6Bのキャリア本体12上の定位置に保持されているので、前後一対の被搬送物支持具13a,13bが従動キャリア6Bのキャリア本体12に直接取り付けられている場合と全く変わらずに、上記のように使用することが出来る。換言すれば、推進用スクリュー9の通常の加減速を伴う起動停止時に、駆動キャリア6Aと一体に移動する被搬送物Wを支持している従動キャリア6B側の前後一対の被搬送物支持具13a,13bとキャリア本体12との間に生じる通常時の慣性力では、保持手段36の保持作用が解除されないように、スプリングボールユニット38の圧縮コイルスプリング41の初期応力が設定されている。具体的には、スプリングボールユニット38の圧縮コイルスプリング41の初期応力が、前記通常時の慣性力では、可動体35とベース部材37とが、係止具39が圧縮コイルスプリング41の付勢力に抗して凹部40内から離脱するのを伴って前後方向に相対移動するようなことがない程度に、予め調整されている。   According to the above configuration, usually, the pair of front and rear transport object supports 13a and 13b are held at fixed positions on the carrier body 12 of the driven carrier 6B via the vertical support members 14a and 14b and the holding means 36. Therefore, it can be used as described above without any difference from the case where the pair of front and rear object supports 13a and 13b are directly attached to the carrier body 12 of the driven carrier 6B. In other words, when the propulsion screw 9 is started and stopped with normal acceleration / deceleration, a pair of front and rear transport object supports 13a on the driven carrier 6B supporting the transport object W that moves integrally with the drive carrier 6A. , 13b and the carrier body 12 under normal inertia force, the initial stress of the compression coil spring 41 of the spring ball unit 38 is set so that the holding action of the holding means 36 is not released. Specifically, when the initial stress of the compression coil spring 41 of the spring ball unit 38 is the normal inertia force, the movable body 35 and the base member 37 cause the locking tool 39 to act as the urging force of the compression coil spring 41. It is adjusted in advance to such an extent that it does not move relative to the front-rear direction as it moves away from the inside of the recess 40.

しかし、何らかの異常事態により駆動中の推進用スクリュー9が通常の減速制御を伴わずに非常停止したような場合には、駆動キャリア6Aと一体に瞬時に非常停止がかけられる被搬送物W(前後一対の被搬送物支持具13a,13b)に対して、従動キャリア6Bのキャリア本体12には前進方向に非常に大きな異常慣性力が作用することになるので、当該異常慣性力で可動体35に対しベース部材37が、係止具39が圧縮コイルスプリング41の付勢力に抗して凹部40内から離脱するのを伴って前方に相対移動することになり、この従動キャリア6Bのキャリア本体12が被搬送物支持具13a,13bに対して前進方向へ移動することにより前記異常慣性力が吸収される。   However, when the propulsion screw 9 being driven is stopped due to some abnormal situation without performing normal deceleration control, the conveyed object W (front-rear) that can be instantaneously stopped integrally with the drive carrier 6A. A very large abnormal inertia force acts in the forward direction on the carrier body 12 of the driven carrier 6B with respect to the pair of transported object supports 13a and 13b), and therefore the movable body 35 is affected by the abnormal inertia force. On the other hand, the base member 37 moves relative to the front as the locking member 39 is disengaged from the recess 40 against the urging force of the compression coil spring 41, and the carrier body 12 of the driven carrier 6B is moved. The abnormal inertia force is absorbed by moving in the forward direction with respect to the transported object supports 13a and 13b.

尚、上記作用によって凹部40内から離脱した係止具39は、可動体35の側面上に圧接した状態で停止することになるので、上記非常停止の原因が解消して搬送装置を元の稼働状態に復帰させるときは、被搬送物W(前後一対の被搬送物支持具13a,13b)に対して手作業で従動キャリア6Bを後退方向に押して移動させ、保持手段36の係止具39が凹部40に嵌合する元の保持状態に復帰させれば良いが、この復帰操作を自動化するために戻し用付勢手段43を併設することが出来る。図6及び図7に仮想線で示す戻し用付勢手段43は、可動体35と前後一対の支持アーム33a,33bとの間に、例えばガイドロッド34a,34bに遊嵌させる状態で介装された、保持手段36による保持が解除されて移動した従動キャリア6Bを元の定位置に復帰させる圧縮コイルスプリング44によって構成している。この場合の圧縮コイルスプリング44は、可動体35とベース部材37とを、保持手段36によって保持される定位置に初期応力によって付勢保持し得るものであっても良いし、保持手段36による保持が解除されて可動体35とベース部材37とが相対移動したときに初めて付勢作用が機能するものであっても良い。   In addition, since the locking tool 39 detached from the inside of the concave portion 40 by the above action is stopped in a state of being pressed against the side surface of the movable body 35, the cause of the emergency stop is solved and the conveying device is moved to the original operation. When returning to the state, the driven carrier 6B is manually pushed and moved in the backward direction with respect to the transported object W (a pair of transported object support tools 13a and 13b), and the locking tool 39 of the holding means 36 is moved. It is only necessary to return to the original holding state that fits into the recess 40, but a return biasing means 43 can be provided in order to automate this return operation. 6 and 7 is interposed between the movable body 35 and the pair of front and rear support arms 33a and 33b, for example, in a state of being loosely fitted to the guide rods 34a and 34b. The driven carrier 6B that has moved after being released from the holding by the holding means 36 is constituted by a compression coil spring 44 that returns the original carrier to its original fixed position. The compression coil spring 44 in this case may be capable of urging and holding the movable body 35 and the base member 37 at a fixed position held by the holding means 36 by an initial stress. The biasing function may function only when the movable body 35 and the base member 37 are moved relative to each other after being released.

尚、図6に示すように、保持手段36で保持される定位置に対して前後何れにも従動キャリア6Bのキャリア本体12が移動出来るように構成すれば、搬送用走行体1が推進用スクリュー9の正逆回転により前進方向への走行と後進方向への走行とに切り換えられる場合に好適であるが、推進用スクリュー9の非常停止時に保持手段36の保持が解除されることによって従動キャリア6Bが慣性力で移動する方向は、推進用スクリュー9による送り方向であるから、上記実施例のようにスクリュー駆動エリア2での搬送用走行体1が前進方向にのみ移動する場合には、従動キャリア6Bのキャリア本体12に取り付けられた前後一対の支持アーム33a,33bの内、前側の支持アーム33aと可動体35との間の移動空間を無くすように構成しても良い。   As shown in FIG. 6, if the carrier body 12 of the driven carrier 6B can be moved forward and backward with respect to the fixed position held by the holding means 36, the transport traveling body 1 can be used as the propulsion screw. 9 is suitable for switching between traveling in the forward direction and traveling in the reverse direction by forward / reverse rotation of 9, but when the propulsion screw 9 is in an emergency stop, the holding means 36 is released to release the driven carrier 6 </ b> B. Since the direction of movement by the inertial force is the direction of feeding by the propulsion screw 9, when the traveling body 1 for conveyance in the screw drive area 2 moves only in the forward direction as in the above embodiment, the driven carrier Of the pair of front and rear support arms 33a and 33b attached to the carrier body 12 of 6B, the moving space between the front support arm 33a and the movable body 35 is eliminated. It may be.

図8及び図9に示す実施例について説明すると、この実施例に示す保持手段45は、従動キャリア6Bの伽本体12に固着されたスライドガイドブロック46に水平左右方向に出退移動自在に支持された可動軸杆47、この可動軸杆47の先端に垂直支軸によって軸支されたカム従動ローラー48、前記可動軸杆47を進出方向に付勢するために当該可動軸杆47に遊嵌された圧縮コイルスプリング49、及び前記可動体35の側面に形成されたカム面50から構成され、当カム面50には、被搬送物支持具13a,13b(可動体35)に対して従動キャリア6Bのキャリア本体12が定位置にあるときに前記カム従動ローラー48の先端ほぼ半円領域が嵌合する位置決め用凹部50aと、この位置決め用凹部50aから前記異常慣性力で被搬送物支持具13a,13b(可動体35)に対して従動キャリア6Bのキャリア本体12が移動する側に連設された、前記凹部50aから遠ざかるほど浅くなるように傾斜する戻し用傾斜カム面部50bが設けられている。   The embodiment shown in FIGS. 8 and 9 will be described. The holding means 45 shown in this embodiment is supported by a slide guide block 46 fixed to the collar body 12 of the driven carrier 6B so as to be movable in and out horizontally. The movable shaft rod 47, a cam driven roller 48 pivotally supported by a vertical support shaft on the tip of the movable shaft rod 47, and loosely fitted to the movable shaft rod 47 to urge the movable shaft rod 47 in the advancing direction. The compression coil spring 49 and a cam surface 50 formed on the side surface of the movable body 35 are provided on the side of the movable body 35. The cam surface 50 has a follower carrier 6B with respect to the object supports 13a and 13b (movable body 35). A positioning recess 50a in which a substantially semi-circular region of the tip of the cam driven roller 48 is fitted when the carrier body 12 is in a fixed position, and the positioning inertia 50a is covered by the abnormal inertia force. A return inclined cam surface portion 50b, which is connected to the side on which the carrier main body 12 of the driven carrier 6B moves with respect to the feed support tools 13a and 13b (movable body 35), and which is inclined so as to become shallower away from the concave portion 50a. Is provided.

上記構成の保持手段45によれば、通常は、従動キャリア6Bのキャリア本体12側のカム従動ローラー48の先端ほぼ半円領域が被搬送物支持具13a,13b側の可動体35の位置決め用凹部50aに嵌合して、被搬送物支持具13a,13bに対して従動キャリア6Bのキャリア本体12が定位置に保持されているが、上記のように被搬送物支持具13a,13bに対して従動キャリア6Bのキャリア本体12が異常な慣性力で前方に移動しようとしたときには、図9に示すように、圧縮コイルスプリング49の付勢力に抗してカム従動ローラー48が位置決め用凹部50aによって押し出されて保持手段45による定位置保持が解除され、可動体35に対して従動キャリア6Bのキャリア本体12が前方に移動することになる。このときカム従動ローラー48は、位置決め用凹部50aに続く戻し用傾斜カム面部50b上を転動し、キャリア本体12の前方への移動に伴って圧縮コイルスプリング49の付勢力に抗して漸次外側へ押し出され、圧縮コイルスプリング49の圧縮反力が漸増する。上記慣性力が無くなって従動キャリア6Bのキャリア本体12の前方への移動が止まると、圧縮コイルスプリング49の圧縮反力により可動体35側へ押し出されようとするカム従動ローラー48が戻し用傾斜カム面部50bに押圧する結果、従動キャリア6Bのキャリア本体12には、後退方向の推力が働き、可動体35に対してキャリア本体12が後方に移動し始める。そして被搬送物支持具13a,13b(可動体35)に対して従動キャリア6Bのキャリア本体12が定位置に復帰したとき、カム従動ローラー48が再び位置決め用凹部50a内に嵌合し、従動キャリア6Bのキャリア本体12が定位置に保持されることになる。   According to the holding means 45 having the above-described configuration, normally, the substantially semicircular region of the tip of the cam driven roller 48 on the carrier body 12 side of the driven carrier 6B is the concave portion for positioning the movable body 35 on the object support 13a, 13b side. 50a, the carrier body 12 of the driven carrier 6B is held at a fixed position with respect to the transported object supports 13a and 13b, but as described above, with respect to the transported object supports 13a and 13b. When the carrier body 12 of the driven carrier 6B tries to move forward with an abnormal inertial force, the cam driven roller 48 is pushed out by the positioning recess 50a against the urging force of the compression coil spring 49 as shown in FIG. Accordingly, the fixed position holding by the holding means 45 is released, and the carrier body 12 of the driven carrier 6B moves forward with respect to the movable body 35. At this time, the cam driven roller 48 rolls on the return inclined cam surface portion 50b following the positioning recess 50a, and gradually moves outward against the urging force of the compression coil spring 49 as the carrier body 12 moves forward. The compression reaction force of the compression coil spring 49 gradually increases. When the inertial force disappears and the forward movement of the carrier body 12 of the driven carrier 6B stops, the cam driven roller 48 which is about to be pushed toward the movable body 35 by the compression reaction force of the compression coil spring 49 is a return inclined cam. As a result of pressing against the surface portion 50b, a reverse thrust acts on the carrier body 12 of the driven carrier 6B, and the carrier body 12 begins to move backward relative to the movable body 35. When the carrier body 12 of the driven carrier 6B returns to the fixed position with respect to the transported object supports 13a and 13b (movable body 35), the cam driven roller 48 is fitted again into the positioning recess 50a, and the driven carrier The 6B carrier body 12 is held in place.

上記実施例では、保持手段45の係止具であるカム従動ローラー48、圧縮コイルスプリング49、及びカム面50の戻し用傾斜カム面部50bによって、戻し用付勢手段51が構成されていることになる。尚、搬送用走行体1が推進用スクリュー9の正逆回転により前進方向への走行と後進方向への走行とに切り換えられる場合は、戻し用傾斜カム面部50bを位置決め用凹部50aの前後両側に対称形に設けることが出来る。   In the above-described embodiment, the return biasing means 51 is configured by the cam driven roller 48, the compression coil spring 49, and the return inclined cam surface portion 50b of the cam surface 50, which are locking members of the holding means 45. Become. When the transporting traveling body 1 is switched between traveling in the forward direction and traveling in the backward direction by forward and reverse rotation of the propulsion screw 9, the return inclined cam surface portion 50b is provided on both the front and rear sides of the positioning recess 50a. It can be provided symmetrically.

尚、駆動キャリア6Aを推進させる推進手段として、推進用スクリュー9とこれに係合する駆動キャリア6A側の被動ローラー23a〜23cを利用するスクリュー駆動形式のものを示し、この推進手段を備えた駆動エリアをスクリュー駆動エリア2として説明したが、駆動キャリア6Aを推進させる推進手段としては上記スクリュー駆動形式のものに限定されるわけではなく、他の任意の推進手段、例えば走行経路わきに配設した摩擦駆動輪を駆動キャリア6Aのキャリア本体12の側面に圧接させる摩擦駆動形式のものや、チエンコンベヤのプッシャーと係脱自在な被動ドッグを駆動キャリア6A側に設けて、特定区間で駆動キャリア6Aを推進させることが出来るチエンコンベヤ形式のものなどが利用できるし、場合によっては、駆動キャリア6A自体に推進用駆動手段(例えば支持用車輪15a,15bの内の1つを回転駆動するモーター)を搭載して自走形式とすることも可能である。   The propulsion means for propelling the drive carrier 6A is a screw drive type using the propulsion screw 9 and the driven rollers 23a to 23c on the drive carrier 6A side engaged therewith, and a drive equipped with this propulsion means. Although the area has been described as the screw drive area 2, the propulsion means for propelling the drive carrier 6 </ b> A is not limited to the above-described screw drive type, and is disposed at any other propulsion means, for example, along the travel route. A friction drive type that presses the friction drive wheel against the side surface of the carrier body 12 of the drive carrier 6A, or a driven dog that can be freely engaged with and disengaged from the pusher of the chain conveyor is provided on the drive carrier 6A side. A chain conveyor type that can be propelled can be used, and in some cases, driven It is also possible to Yaria 6A propulsion drive means itself mounted (e.g. supporting wheels 15a, a motor that rotationally drives one of the 15b) and self-propelled type.

本発明の搬送装置は、自動車車体のような巾広大型の被搬送物の左右両側辺を左右一対の互いに連結一体化されていないキャリアで各別支持して搬送する場合に、片側のキャリアのみをスクリュー駆動する搬送装置として活用出来る。   The transport device of the present invention can support only one carrier on the left and right sides of a large and large object to be transported by a pair of left and right carriers that are not connected and integrated with each other. Can be used as a transfer device that drives the screw.

1 搬送用走行体
2 スクリュー駆動エリア
3 戻し経路
4 搬送用走行体降下手段
5 搬送用走行体上昇手段
6A 駆動キャリア
6B 従動キャリア
7A,7B 作業床
8A,8B,30A,30B 搬送用走行体案内用レール
9 推進用スクリュー
12 キャリア本体
13 被搬送物支持手段
13a,13b 被搬送物支持具
14a,14b 垂直支柱部材
23a〜23c 被動ローラー
25 スクリュー単体
27 減速機付きモーター
32a,32b 取付け手段
33a,33b 支持アーム
34a,34b ガイドロッド
35 可動体
36,45 保持手段
37 ベース部材
38 スプリングボールユニット
39 係止具(金属製球体)
40 円錐状の凹部
41,44,49 圧縮コイルスプリング
43,51 戻し用付勢手段
46 スライドガイドブロック
47 可動軸杆
48 カム従動ローラー
50 カム面
50a 位置決め用凹部
50b 戻し用傾斜カム面部
W 被搬送物
DESCRIPTION OF SYMBOLS 1 Transportation traveling body 2 Screw drive area 3 Return path 4 Transportation traveling body lowering means 5 Transportation traveling body raising means 6A Drive carrier 6B Driven carrier 7A, 7B Work floor 8A, 8B, 30A, 30B For traveling body guidance for transportation Rail 9 Propulsion screw 12 Carrier body 13 Conveyed object support means 13a, 13b Conveyed object support tools 14a, 14b Vertical strut members 23a-23c Driven roller 25 Screw unit 27 Motor with speed reducer 32a, 32b Mounting means 33a, 33b Support Arm 34a, 34b Guide rod 35 Movable body 36, 45 Holding means 37 Base member 38 Spring ball unit 39 Locking tool (metal sphere)
40 Conical recess 41, 44, 49 Compression coil spring 43, 51 Return biasing means 46 Slide guide block 47 Movable shaft rod 48 Cam driven roller 50 Cam surface 50a Positioning recess 50b Return inclined cam surface W W Conveyed object

Claims (5)

搬送経路に沿って移動する搬送用走行体が、1つの被搬送物の左右両側辺の一方を支持する駆動キャリアと、当該被搬送物の左右両側辺の他方を支持する従動キャリアから構成され、一方の駆動キャリアは、推進手段により駆動し、他方の従動キャリアは、被搬送物を介して前記駆動キャリアと一体になって従動走行するように構成された搬送装置であって、前記従動キャリアは、ガイドレールに支持されたキャリア本体と、当該キャリア本体に対し走行方向と平行な方向に一定範囲内で移動自在に支持された被搬送物支持手段によって構成され、この被搬送物支持手段を前記キャリア本体に対し定位置に保持する保持手段が併設され、この保持手段は、被搬送物に対し前記キャリア本体に一定以上の慣性力が走行方向に作用したときに保持が解除される構成である搬送装置において、
前記保持手段には、一定以上の慣性力を受けて前記定位置から外れたキャリア本体を元の定位置に戻す戻し用付勢手段が併設されている、搬送装置。
The transport traveling body that moves along the transport path is composed of a drive carrier that supports one of the left and right sides of one transported object, and a driven carrier that supports the other of the left and right sides of the transported object, One drive carrier is driven by propulsion means, and the other driven carrier is a transport device configured to follow the driving carrier integrally with the driven carrier via a transported object , and the driven carrier is The carrier body supported by the guide rail, and the object support means supported by the carrier body so as to be movable within a certain range in a direction parallel to the traveling direction. Holding means for holding the carrier body in a fixed position is provided, and this holding means is held when an inertia force of a certain level or more is applied to the carrier body on the object to be conveyed in the traveling direction. In the transport device is configured to be released,
The holding device is provided with return biasing means for returning the carrier main body that has deviated from the fixed position to the original fixed position under an inertia force of a certain level or more.
前記被搬送物支持手段は、前後一対の被搬送物支持具で構成され、これら前後一対の被搬送物支持具各々が、キャリア本体に対し走行方向と平行な方向に一定範囲内で移動自在に支持されると共に前記保持手段によって定位置に保持されている、請求項1に記載の搬送装置。   The transport object support means includes a pair of front and rear transport object supports, and each of the front and rear transport object supports is movable within a certain range in a direction parallel to the traveling direction with respect to the carrier body. The transport apparatus according to claim 1, which is supported and held at a fixed position by the holding means. 前記保持手段は、互いに隣接する被搬送物支持手段側とキャリア本体側の一方に設けられた凹部と、この凹部に対し嵌脱自在に他方に支持された係止具と、この係止具を前記凹部内に嵌合させる方向に付勢するスプリングから構成されている、請求項1又は2に記載の搬送装置。   The holding means includes a recessed portion provided on one of the transported object supporting means side and the carrier body side adjacent to each other, a locking tool supported on the other side so as to be detachable from the recessed portion, and the locking tool. The transport apparatus according to claim 1, wherein the transport apparatus is configured by a spring that is biased in a direction of fitting in the recess. 前記戻し用付勢手段は、キャリア本体を定位置方向に付勢するスプリングによって構成されている、請求項1〜3の何れか1項に記載の搬送装置。   The conveying device according to any one of claims 1 to 3, wherein the return biasing means is configured by a spring that biases the carrier body in a fixed position direction. 前記保持手段の係止具は、カム従動ローラーから成り、前記戻し用付勢手段は、前記凹部から離脱した前記カム従動ローラーを受けるカム面と、前記カム従動ローラーを凹部内に嵌合させる方向に付勢する前記スプリングによって構成され、前記凹部から離脱した前記カム従動ローラーが前記スプリングによる付勢力で前記カム面に圧接することにより、定位置から外れたキャリア本体が元の定位置に戻されるように構成されている、請求項3に記載の搬送装置。 The holding means has a locking member made of a cam driven roller, and the return biasing means has a cam surface that receives the cam driven roller detached from the recess and a direction in which the cam driven roller is fitted in the recess. The cam follower roller, which is constituted by the spring urging the cam and is released from the concave portion, presses against the cam surface by the urging force of the spring, so that the carrier main body which is out of the fixed position is returned to the original fixed position. The transport apparatus according to claim 3 , configured as described above.
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