JP4804123B2 - Support device for work vehicle - Google Patents

Support device for work vehicle Download PDF

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JP4804123B2
JP4804123B2 JP2005336436A JP2005336436A JP4804123B2 JP 4804123 B2 JP4804123 B2 JP 4804123B2 JP 2005336436 A JP2005336436 A JP 2005336436A JP 2005336436 A JP2005336436 A JP 2005336436A JP 4804123 B2 JP4804123 B2 JP 4804123B2
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roller
jack
arm
ground plate
grounded
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JP2007137343A (en
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康二 井上
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Tadano Ltd
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  • Forklifts And Lifting Vehicles (AREA)

Description

本発明は、作業車両の支持装置に関するものである。   The present invention relates to a support device for a work vehicle.

この種の作業車両の支持装置としてローラと接地板を有する支持装置を備えた高所作業車が公知である。この高所作業車に備えられた支持装置は、図４に図示するように、車体に取付けられて車体を支持するジャッキ１２と、前記ジャッキ１２の下端部に回転自在に軸支されて接地するローラ１６と、前記ジャッキ１２の下端部に取付けられ、前記ローラ１６に代えて接地可能な接地板２２を有したジャッキベース２０を備えている。ジャッキベース２０は、揺動軸１５を中心に揺動させることにより、接地板２２がローラ１６の下面を覆う板接地位置（図４の（ａ）の状態）とローラ下面を露出する退避位置（図４の（ｂ）の状態）とに位置変更し、板設置位置で接地板２２を接地させ、退避位置でローラ１６を接地させ車体を支持させるようにしている。（例えば特許文献１参照）
特開２０００−１１８３６７号公報（第３頁〜第４頁、図３、図４） As a support device for this type of work vehicle, an aerial work vehicle having a support device having a roller and a ground plate is known. As shown in FIG. 4, the support device provided in the aerial work vehicle has a jack 12 that is attached to the vehicle body and supports the vehicle body, and is rotatably supported by the lower end portion of the jack 12 and is grounded. A roller 16 and a jack base 20 attached to the lower end of the jack 12 and having a grounding plate 22 that can be grounded instead of the roller 16 are provided. The jack base 20 is pivoted about the pivot shaft 15 so that the ground plate 22 covers the lower surface of the roller 16 (the state shown in FIG. 4A) and the retracted position (exposes the lower surface of the roller). 4 (b)), the ground plate 22 is grounded at the plate installation position, and the roller 16 is grounded at the retracted position to support the vehicle body. (For example, see Patent Document 1)
JP 2000-118367 A (page 3 to page 4, FIGS. 3 and 4)

ところが上記高所作業車では、ローラ１６を接地あるいは接地板２２を接地させるかによって、ジャッキベース２０を揺動させて板設置位置あるいは退避位置に設定させる必要があり、その度にジャッキベース２０のプランジャピン３５を板設置位置あるいは退避位置に係止あるいは係合させる必要があり、作業としては煩わしいものであった。 However, in the aerial work vehicle described above, it is necessary to swing the jack base 20 to the plate installation position or the retracted position depending on whether the roller 16 is grounded or the ground plate 22 is grounded. It is necessary to lock or engage the plunger pin 35 at the plate installation position or the retracted position, which is troublesome.

本発明は、このような課題を解決した作業車両の支持装置を提供することを目的とする。   An object of this invention is to provide the support apparatus of the work vehicle which solved such a subject.

上記の目的を達成するため、本発明に係る請求項１記載の作業車両の支持装置は、車両のフレームに取付けられ先端部を下方に伸縮駆動可能なジャッキと、一端をジャッキに近接したフレームに軸支されたリンクと、リンクの他端とジャッキ先端部とをそれぞれ個別に軸支して連結させジャッキの伸縮によりリンクとの枢支軸を中心に揺動させるアームと、アームに回転自在なローラと揺動自在な接地板とを配置し、ジャッキを縮小しているときには前記ローラと接地板を格納させる格納状態に、ジャッキの伸長途中では前記ローラを地面に接地させるローラ接地状態に、更なるジャッキの伸長ではローラに代えて前記接地板を地面に接地させる接地板接地状態、となるよう前記アームに配置するローラと接地板の位置を決定してあることを特徴とするものである。   In order to achieve the above object, a work vehicle support device according to claim 1 according to the present invention is provided with a jack attached to a vehicle frame and capable of extending and retracting a tip portion downward, and a frame having one end close to the jack. A link that is pivotally supported, an arm that pivotally supports the other end of the link and the tip of the jack, and swings around the pivotal axis of the link by expansion and contraction of the jack. A roller and a swingable ground plate are arranged, and when the jack is being reduced, the roller and the ground plate are retracted, and in the middle of the extension of the jack, the roller is grounded and the roller is grounded. In the extension of the jack, the position of the roller and the ground plate arranged on the arm is determined so as to be in the ground plate ground state in which the ground plate is grounded instead of the roller. It is an butterfly.

請求項１に係る本発明の作業車両の支持装置は、ジャッキを縮小しているときには前記ローラと接地板を格納させる格納状態に、ジャッキの伸長途中では前記ローラを地面に接地させるローラ接地状態に、更なるジャッキの伸長ではローラに変えて前記接地板を地面に接地させる接地板接地状態、となるよう前記アームに配置するローラと接地板の位置を決定してあるものだから、ジャッキを伸縮駆動させることで格納状態、ローラ接地、接地板接地の各状態にすることができ、煩わしい操作をなくすることができる。   The support device for a work vehicle according to the first aspect of the present invention is in a retracted state in which the roller and the ground plate are retracted when the jack is contracted, and in a roller grounded state in which the roller is grounded to the ground during the extension of the jack. In the extension of the jack, the position of the roller and the ground plate placed on the arm is determined so that the ground plate is grounded instead of the roller, so that the ground plate is grounded. By doing so, each of the retracted state, the roller grounding, and the grounding plate grounding can be achieved, and troublesome operations can be eliminated.

以下本発明に係る作業車両の支持装置の実施形態を説明するにあたって、作業車両として車両上に旋回および起伏可能に配置した伸縮ブームの先端に作業台を備えた高所作業車に実施される場合について以下に説明する。図１〜図３に図示するように、３０は、高所作業車のフレームであり、３１は、高所作業車のフレーム３０に取付けられ先端部を下方に伸縮駆動可能なジャッキである。このジャッキ３１は、本実施形態の場合、フレーム３０に基端部を取付けた外箱３１ａと、外箱３１ａに伸縮自在に嵌挿させ外箱３１ａの先端側から出没させる内箱３１ｂと、外箱３１ａと内箱３１ｂ間に配置され外箱３１ａに対して内箱３１ｂを伸縮駆動させる油圧シリンダ３１ｃ（図示しない）とで構成している。   In the following description of an embodiment of a work vehicle support device according to the present invention, the work vehicle is implemented in an aerial work vehicle equipped with a work table at the tip of a telescopic boom disposed on the vehicle in a turnable and undulating manner. Is described below. As shown in FIG. 1 to FIG. 3, 30 is a frame of an aerial work vehicle, and 31 is a jack that is attached to the frame 30 of the aerial work vehicle and that can be extended and retracted downward. In the case of the present embodiment, the jack 31 includes an outer box 31a having a base end attached to the frame 30, an inner box 31b that is telescopically inserted into the outer box 31a and protrudes and retracts from the distal end side of the outer box 31a, A hydraulic cylinder 31c (not shown) is disposed between the box 31a and the inner box 31b and drives the inner box 31b to extend and contract with respect to the outer box 31a.

３２は、外箱３１ａの外側面に止着したブラケットである。３３は、一端をブラケット３２に軸３４で軸支させたリンクである。３５は、リンク３３の他端と軸３６で軸支され、内箱３１ｂの先端部と軸３７で軸支して連結させたアームである。このアーム３５は、ジャッキ３１の油圧シリンダ３１ｃを伸縮させることにより、枢支軸３６を中心にアーム３５を揺動させるようにしている。   32 is a bracket fixed to the outer surface of the outer box 31a. Reference numeral 33 denotes a link having one end pivotally supported on the bracket 32 by a shaft 34. Reference numeral 35 denotes an arm that is pivotally supported by the other end of the link 33 and the shaft 36 and is pivotally supported by the tip of the inner box 31 b and the shaft 37. The arm 35 swings the arm 35 about the pivot shaft 36 by expanding and contracting the hydraulic cylinder 31 c of the jack 31.

３８は、ローラであって、アーム３５に軸３９で回転自在に配置されている。４０は、接地板であって、アーム３５に軸４１で揺動自在に配置されている。このローラ３８と接地板４０は、ジャッキ３１を縮小しているときには前記ローラ３８と接地板４０を格納させる格納状態（図１の状態）に、ジャッキ３１の伸長途中では前記ローラ３８を地面に接地させるローラ接地状態（図２の状態）に、更なるジャッキ３１の伸長ではローラ３８に代えて前記接地板４０を地面に接地させる接地板接地状態（図３の状態）、となるよう前記アーム３５に配置するローラ３８と接地板４０の位置を決定してある。   A roller 38 is disposed on the arm 35 so as to be rotatable about a shaft 39. Reference numeral 40 denotes a ground plate, which is disposed on the arm 35 so as to be swingable by a shaft 41. When the jack 31 is contracted, the roller 38 and the ground plate 40 are in a retracted state (the state shown in FIG. 1) in which the roller 38 and the ground plate 40 are retracted. The arm 35 is in a grounded state (state shown in FIG. 3) in which the grounding plate 40 is grounded instead of the roller 38 when the jack 31 is further extended. The positions of the roller 38 and the grounding plate 40 to be arranged in the above are determined.

すなわち、ジャッキ３１を伸長させることにより軸３６を中心にアーム３５を揺動させるにあたって、まずローラ３８が地面に接地するようアーム３５の下方にローラ３８の回転軸３９を配置し、更にジャッキ３１を伸長させることによりアーム３５を更に揺動させローラ３８に代えて接地板４０を地面に接地するようアーム３５の揺動軸３６から最も離間するアーム３５の先端部に接地板４０の揺動軸４１を配置している。   That is, when the arm 35 is swung about the shaft 36 by extending the jack 31, first, the rotating shaft 39 of the roller 38 is disposed below the arm 35 so that the roller 38 contacts the ground, and the jack 31 is further moved. By extending the arm 35, the arm 35 is further swung, and instead of the roller 38, the grounding plate 40 is grounded on the tip of the arm 35 farthest from the rocking shaft 36 of the arm 35 so as to contact the ground. Is arranged.

なお、ローラ接地状態では、ローラ３８によって高所作業車を持上げないで、走行用車輪とともに高所作業車を支持する程度にローラ３８を地面に接地させるようアーム３５にローラ３８の回転軸３９を配置する位置を決定させている。また、接地板接地状態ではジャッキ３１の伸長により接地板４０を接地させた時に、高所作業車を持上げ接地板４０で完全支持できるようアーム３５に接地板４０の揺動軸４１を配置する位置を決定させている。   In the roller grounding state, the rotary shaft 39 of the roller 38 is attached to the arm 35 so that the roller 38 is grounded to such an extent that the height working vehicle is supported together with the traveling wheels without lifting the height working vehicle by the roller 38. The position to be arranged is determined. Further, when the ground plate 40 is grounded by extension of the jack 31 in the ground plate ground state, the position where the swing shaft 41 of the ground plate 40 is disposed on the arm 35 so that the work vehicle at a high place can be lifted and fully supported by the ground plate 40. Is determined.

本実施形態では、アーム３５は、アーム３５を三角状の部材で構成し、三角形の各頂点部分に前記軸３６、軸３９、軸４１を配置しており、軸３７は、軸３６と軸４１を結ぶ直線上の軸３６寄り位置に配置いる。また、上記ブラケット３２、リンク３３、アーム３５、は、内箱３１ｂを挟んで左右一対配置しており、各軸３４、３６、３７、３９、４１は左右に貫通して配置されるとともに、ローラ３８と接地板４０は左右のアーム３５間に配置している。また、本発明に係る高所作業車の支持装置を後輪の近傍に左右２基配置させている。   In the present embodiment, the arm 35 is constituted by a triangular member, and the shaft 36, the shaft 39, and the shaft 41 are arranged at each vertex portion of the triangle, and the shaft 37 includes the shaft 36 and the shaft 41. It is arranged at a position near the axis 36 on the straight line connecting. The bracket 32, the link 33, and the arm 35 are arranged in a pair on the left and right sides with the inner box 31b interposed therebetween, and the shafts 34, 36, 37, 39, and 41 are arranged to penetrate left and right, and rollers 38 and the ground plate 40 are arranged between the left and right arms 35. Further, two support devices for an aerial work vehicle according to the present invention are arranged in the vicinity of the rear wheel.

このように構成した本発明に係る高所作業車の支持装置は、次のように作用する。高所作業車の走行状態では、ジャッキ３１の油圧シリンダ３１ｃを縮小させアーム３５を上方に揺動させてローラ３８と接地板４０を格納状態にする。（図１の状態）
次に、高所作業車を走行させながら作業する場合には、走行車輪で高所作業車を走行させながら作業台に搭乗した作業者により高所作業するのである。そこで、高所作業車を安定に支持させるためにローラ３８を接地させて高所作業車を走行させる。したがって、ジャッキ３１の油圧シリンダ３１ｃを伸長させアーム３５を揺動させる。ローラ３８が接地させるまで油圧シリンダ３１ｃを伸長させアーム３５を揺動させる。ローラ３８が接地した時に油圧シリンダ３１ｃの伸長を停止させローラ接地状態にする。（図２の状態）この状態で高所作業車を走行させることで、ローラ３８で支持させなから高所作業を行うことができ、安定走行支持の状態で安全に作業できる。 The support device for an aerial work vehicle according to the present invention configured as described above operates as follows. In a traveling state of an aerial work vehicle, the hydraulic cylinder 31c of the jack 31 is reduced and the arm 35 is swung upward to bring the roller 38 and the ground plate 40 into the retracted state. (State of Fig. 1)
Next, when working while driving an aerial work vehicle, the worker who is on the work table works at a higher place while traveling the aerial work vehicle with traveling wheels. Therefore, in order to stably support the aerial work vehicle, the roller 38 is grounded to run the aerial work vehicle. Therefore, the hydraulic cylinder 31c of the jack 31 is extended to swing the arm 35. The hydraulic cylinder 31c is extended to swing the arm 35 until the roller 38 is grounded. When the roller 38 is grounded, the extension of the hydraulic cylinder 31c is stopped and the roller is grounded. (State of FIG. 2) By running the aerial work vehicle in this state, it is possible to perform the aerial work without being supported by the roller 38, and it is possible to work safely in a state of stable running support.

また、高所作業車により所定位置で作業する場合には、高所作業車を接地板４０で地面に固定的に完全支持させ、作業台に搭乗した作業者により高所作業作業を行うのである。そこで上記ローラ接地状態から更にジャッキ３１の油圧シリンダ３１ｃを伸長させアーム３５を揺動させる。接地板４０が接地させるまで油圧シリンダ３１ｃを伸長させアーム３５を揺動させる。接地板４０が接地した時に油圧シリンダ３１ｃの伸長を停止させ接地板接地状態にする。（図３の状態）この状態で作業台を高所位置に移動させて高所作業するに、接地板４０で高所作業車を地面に支持させているので、安定的に高所作業車を支持でき安全な高所作業ができる。   In addition, when working at a predetermined position by an aerial work vehicle, the aerial work vehicle is fixedly and completely supported on the ground by the ground plate 40, and the worker who is on the work table performs the high work work. . Therefore, the hydraulic cylinder 31c of the jack 31 is further extended from the roller grounding state to swing the arm 35. The hydraulic cylinder 31c is extended to swing the arm 35 until the ground plate 40 is grounded. When the ground plate 40 is grounded, the extension of the hydraulic cylinder 31c is stopped to bring the ground plate into a grounded state. (State of FIG. 3) In this state, the work platform is moved to a high place to work at a high place, and since the work place is supported by the ground plate 40 on the ground, Supports safe and secure work at height.

逆に接地板接地状態あるいはローラ接地状態から格納状態にするためには、ジャッキ３１の油圧シリンダ３１ｃを縮小させアーム３５を上方に揺動させれば、ローラ３８と接地板４０を格納状態にすることができる。   Conversely, in order to change the grounding plate grounding state or the roller grounding state to the retracted state, the roller 38 and the grounding plate 40 are brought into the retracting state by reducing the hydraulic cylinder 31c of the jack 31 and swinging the arm 35 upward. be able to.

以上のように、本発明に係る高所作業車の支持装置は、ジャッキ３１を伸縮駆動させることで格納状態、ローラ接地、接地板接地の各状態にすることができ、煩わしい操作をなくすることができる。   As described above, the support device for an aerial work vehicle according to the present invention can be brought into the retracted state, the roller grounding, and the grounding plate grounding state by driving the jack 31 to extend and retract, thereby eliminating troublesome operations. Can do.

なお、上記実施形態では、前記アーム３５に配置するローラ３８と接地板４０の位置を、軸３６と軸４１を結ぶ直線上の軸３６寄り位置に軸３７を配置するようにして決定したが、ジャッキ３１を縮小しているときには前記ローラ３８と接地板４０を格納させる格納状態に、ジャッキ３１の伸長途中では前記ローラ３８を地面に接地させるローラ接地状態に、更なるジャッキ３１の伸長ではローラ３８に代えて前記接地板４０を地面に接地させる接地板接地状態、となるような位置関係であればよく、例えば軸３６と軸４１を結ぶ直線上の軸４１寄り位置に配置してもよい。ただし、ローラ接地状態ならびに接地板接地状態で、リンク３３とジャッキ３１とでアーム３５を安定支持できるような配置関係にしておく必要がある。   In the above embodiment, the positions of the roller 38 and the ground plate 40 arranged on the arm 35 are determined by arranging the shaft 37 near the shaft 36 on the straight line connecting the shaft 36 and the shaft 41. When the jack 31 is being contracted, the roller 38 and the ground plate 40 are retracted, and when the jack 31 is being extended, the roller 38 is grounded, and when the jack 31 is being extended, the roller 38 is being extended. Instead, it may be in a positional relationship such that the ground plate 40 is in a ground plate ground state in which the ground plate 40 is grounded. For example, the ground plate 40 may be disposed at a position near the shaft 41 on the straight line connecting the shaft 36 and the shaft 41. However, it is necessary to have an arrangement relationship in which the arm 35 can be stably supported by the link 33 and the jack 31 in the roller grounding state and the ground plate grounding state.

また、上記実施形態では、リンク３３をジャッキ３１の外箱３１ａの外側面に止着させたブラケット３２に軸３４で軸支させてジャッキ３１の外箱３１ａとブラケット３２を介してフレーム３０に軸支させたが、ジャッキ３１の外箱３１ａやブラケット３２を介さずに直接またはフレーム３０に止着したブラケットを介してフレーム３０に軸３４で軸支させるようにしてもよい。この場合、ジャッキ３１に近接したフレーム３０に配置する必要がある。   Further, in the above embodiment, the link 33 is pivotally supported by the shaft 32 on the bracket 32 fixed to the outer side surface of the outer box 31 a of the jack 31, and is pivoted to the frame 30 via the outer box 31 a of the jack 31 and the bracket 32. Although supported, the frame 30 may be supported by the shaft 34 directly or via the bracket fixed to the frame 30 without using the outer box 31a or the bracket 32 of the jack 31. In this case, it is necessary to arrange the frame 30 close to the jack 31.

更に、上記実施形態ではジャッキ３１を外箱３１ａと内箱３１ｂと油圧シリンダ３１ｃとで構成したが、フレーム３０とアーム３５の枢支軸３７間に直接油圧シリンダを取付けるようにしたものであってもよい。この場合にはリンク３３は、直接またはブラケットを介してフレーム３０に軸３４で軸支させることになる。   Further, in the above embodiment, the jack 31 is constituted by the outer box 31a, the inner box 31b, and the hydraulic cylinder 31c. However, the hydraulic cylinder is directly attached between the frame 30 and the pivot shaft 37 of the arm 35. Also good. In this case, the link 33 is supported by the shaft 34 on the frame 30 directly or via a bracket.

次に、上記実施形態の説明では、本発明に係る支持装置を後輪の近傍に左右２基配置したが、車両の前部にも左右にそれぞれ配置し、４基配置するようにしてもよい。また、上記実施形態では、本発明を高所作業車に適用した場合を例に説明したが、橋梁点検車、クレーン車等の作業車にも適用できることもちろんである。更に、上記ローラ３８に代えて鉄輪を配置し、軌陸車として適用するようにしてもよい。   Next, in the description of the above-described embodiment, two support devices according to the present invention are arranged in the vicinity of the rear wheel, but four devices may be arranged on the left and right sides of the front part of the vehicle. . Moreover, although the case where the present invention was applied to an aerial work vehicle was described as an example in the above embodiment, it is needless to say that the present invention can also be applied to a work vehicle such as a bridge inspection vehicle and a crane vehicle. Furthermore, instead of the roller 38, an iron wheel may be disposed and applied as a rail vehicle.

本発明に係る作業車両の支持装置を説明する説明図で、格納状態を説明する説明図である。It is explanatory drawing explaining the support apparatus of the working vehicle which concerns on this invention, and is explanatory drawing explaining a storing state. 本発明に係る作業車両の支持装置を説明する説明図で、ローラ接地状態を説明する説明図である。It is explanatory drawing explaining the support apparatus of the working vehicle which concerns on this invention, and is explanatory drawing explaining a roller grounding state. 本発明に係る作業車両の支持装置を説明する説明図で、接地板接地状態を説明する説明図である。It is explanatory drawing explaining the support apparatus of the working vehicle which concerns on this invention, and is explanatory drawing explaining a ground-plate grounding state. 従来の作業車両の支持装置を説明する説明図で、（ａ）は、板接地位置を説明する説明図であり、（ｂ）は、退避位置を説明する説明図である。It is explanatory drawing explaining the conventional support apparatus of a working vehicle, (a) is explanatory drawing explaining a board grounding position, (b) is explanatory drawing explaining a retracted position.

符号の説明Explanation of symbols

３０ フレーム
３１ ジャッキ
３３ リンク
３５ アーム
３８ ローラ
４０ 接地板 30 Frame 31 Jack 33 Link 35 Arm 38 Roller 40 Ground plate

Claims (1)

車両のフレームに取付けられ先端部を下方に伸縮駆動可能なジャッキと、一端をジャッキに近接したフレームに軸支されたリンクと、リンクの他端とジャッキ先端部とをそれぞれ個別に軸支して連結させジャッキの伸縮によりリンクとの枢支軸を中心に揺動させるアームと、アームに回転自在なローラと揺動自在な接地板とを配置し、ジャッキを縮小しているときには前記ローラと接地板を格納させる格納状態に、ジャッキの伸長途中では前記ローラを地面に接地させるローラ接地状態に、更なるジャッキの伸長ではローラに代えて前記接地板を地面に接地させる接地板接地状態、となるよう前記アームに配置するローラと接地板の位置を決定してあることを特徴とする作業車両の支持装置。 A jack that is attached to the vehicle's frame and that can be driven to extend and retract its tip part downward, a link that is pivotally supported by a frame that is close to the jack, and the other end of the link and the jack tip part are individually pivotally supported. An arm that is connected and swings about a pivot shaft with respect to the link by expansion and contraction of the link, a rotatable roller and a swingable grounding plate are arranged on the arm, and when the jack is being reduced, the arm is in contact with the roller. In the retracted state in which the ground plate is retracted, the roller is grounded while the jack is being extended, and the ground plate is grounded instead of the roller when the jack is further extended. A work vehicle support device characterized in that the positions of a roller and a ground plate arranged on the arm are determined.
JP2005336436A 2005-11-22 2005-11-22 Support device for work vehicle Expired - Fee Related JP4804123B2 (en)

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Publication number Priority date Publication date Assignee Title
CN108443268B (en) * 2018-03-06 2019-04-05 吉林大学 The overload protection hydraulic system and overload protection method of supporting leg for bridge inspection vehicle mechanism
KR102292801B1 (en) * 2019-06-18 2021-08-25 주식회사 월드 outrigger for tow car

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JPS4960419U (en) * 1972-09-07 1974-05-28
JPH04130285U (en) * 1991-05-22 1992-11-30 株式会社小松製作所 Outrigger device

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