JPH0592298U - Safety equipment for aerial work vehicles - Google Patents
Safety equipment for aerial work vehiclesInfo
- Publication number
- JPH0592298U JPH0592298U JP3946992U JP3946992U JPH0592298U JP H0592298 U JPH0592298 U JP H0592298U JP 3946992 U JP3946992 U JP 3946992U JP 3946992 U JP3946992 U JP 3946992U JP H0592298 U JPH0592298 U JP H0592298U
- Authority
- JP
- Japan
- Prior art keywords
- workbench
- elastic member
- protective fence
- safety device
- aerial work
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Forklifts And Lifting Vehicles (AREA)
Abstract
(57)【要約】
【目的】 作業台に取り付けられた防護柵の内側に、通
常の作業時において邪魔になるような部材を設けること
なく、かつ作業台の重量増加を抑えつつ作業者の安全を
確保できるようにした高所作業車の安全装置を提供す
る。
【構成】 安全装置は、作業台10に設けられた防護柵
15の支柱16の上下方向中間部にその支柱16の一部
として取り付けられ、防護柵15の上部側に加わった力
によって弾性変形する弾性部材21と、この弾性部材2
1に内蔵され、その弾性部材21の弾性変形を検出し
て、作業台10の昇降移動等を規制するための信号を出
力する変形検出手段とを備えて構成される。
(57) [Summary] [Purpose] The safety of the operator is not provided inside the protective fence attached to the workbench without any member that interferes with normal work, and while suppressing the increase in the weight of the workbench. To provide a safety device for an aerial work vehicle capable of ensuring the safety. [Structure] The safety device is attached as a part of the pillar 16 to the vertical direction of the pillar 16 of the protective fence 15 provided on the workbench 10, and is elastically deformed by the force applied to the upper side of the protective fence 15. Elastic member 21 and this elastic member 2
1, a deformation detecting means for detecting elastic deformation of the elastic member 21 and outputting a signal for restricting the vertical movement of the workbench 10 and the like.
Description
【0001】[0001]
本考案は、高所作業車の安全装置に関する。 The present invention relates to a safety device for an aerial work vehicle.
【0002】[0002]
電柱上部における電設工事や高所における建築工事等には、昇降移動等が自在 な作業台を備えた高所作業車が使用される。上記作業台には作業者が搭乗し、そ の作業台の昇降移動等により任意の高所に移動して容易に上記作業を行うことが できる。なお、作業台の上面周囲には、適当な高さを有する防護柵が設けられて おり、作業台に搭乗した作業者が落下するのを防止している。 An aerial work vehicle equipped with a workbench that can be freely moved up and down is used for electric work on the poles and construction work in high places. An operator can board the work table and move to a desired height by moving the work table up or down to easily perform the above work. A protective fence with an appropriate height is provided around the upper surface of the workbench to prevent workers on the workbench from falling.
【0003】 ところで、このような高所作業車には、作業台に搭乗した作業者の身体が高所 に存在する構造物等に干渉して、その構造物と防護柵間に挟まれるような事態を 防止するための安全装置が備えられる。従来の安全装置では、防護柵の内側にお ける適当な高さ位置にバー部材等をバネ等により浮かせた状態に支持しておき、 作業者が構造物等に干渉しそうになってそのバー部材等を手や身体で押し下げる ことにより、作業台のそれ以上の昇降移動等を規制するための規制信号が出力さ れるようになっていた。By the way, in such an aerial work vehicle, the body of the worker on the workbench interferes with a structure or the like existing at a high place and is caught between the structure and the protective fence. Safety devices are provided to prevent situations. In the conventional safety device, the bar member is supported at a suitable height position inside the protective fence in a state of being floated by a spring or the like, and the worker is likely to interfere with the structure, etc. By pushing down with a hand or body, a regulation signal for regulating the further upward and downward movement of the workbench was output.
【0004】[0004]
しかしながら、従来の安全装置では、防護柵の内側にバー部材等を設けるため に、そのバー部材等が通常の作業時において邪魔になることが多く、また、その ようなバー部材等を作業台上に設けることにより、作業台の重量が増加し好まし くないという問題があった。 However, in the conventional safety device, since the bar member or the like is provided inside the protective fence, the bar member or the like often becomes an obstacle during normal work, and such bar member or the like is placed on the workbench. However, there is a problem in that the weight of the workbench increases, which is not desirable.
【0005】 本考案は、このような問題に鑑みてなされたものであり、通常の作業時に邪魔 になることなく、また、作業台の重量増加を抑えつつ作業者の安全を確保できる ようにした高所作業車の安全装置を提供することを目的としている。The present invention has been made in view of such a problem, and it is possible to ensure the safety of the operator without hindering the normal work and suppressing an increase in the weight of the workbench. It is intended to provide a safety device for an aerial work vehicle.
【0006】[0006]
上記の目的を達成するために、本考案の安全装置では、作業台に設けられた防 護柵の支柱の上下方向中間部にその支柱の一部として弾性部材を取り付けている 。そして、防護柵の上部側に加わった力によって弾性変形したその弾性部材の弾 性変形を、その弾性部材に内蔵した変形検出手段により検出し、作業台の昇降移 動等を規制するための信号を出力させるようにしている。 In order to achieve the above-mentioned object, in the safety device of the present invention, an elastic member is attached as a part of the pillar to the vertical middle part of the pillar of the protection fence provided on the workbench. Then, the elastic deformation of the elastic member elastically deformed by the force applied to the upper part of the protective fence is detected by the deformation detecting means built in the elastic member, and a signal for controlling the up-and-down movement of the workbench etc. Is output.
【0007】[0007]
このような安全装置では、防護柵の支柱の一部を弾性部材により形成している ため、その防護柵の上部側は通常は下部側に対して浮いた状態に保持される。こ のため、作業台に搭乗した作業者が構造物等に干渉しそうになって防護柵の上部 側にそれを押し下げたり側方に押し出したりする方向に力を加えれば、その力に よって若干量弾性変形した弾性部材に内蔵された変形検出手段から規制信号が出 力され、作業台のそれ以上の移動が規制される。 In such a safety device, since a part of the pillar of the protective fence is formed by an elastic member, the upper side of the protective fence is normally held in a floating state with respect to the lower side. For this reason, if the worker on the workbench is likely to interfere with the structure, etc., and if a force is applied to the upper part of the protective fence in the direction of pushing it down or pushing it out to the side, the amount will be slightly increased. A restriction signal is output from the deformation detection means incorporated in the elastically deformed elastic member, and further movement of the workbench is restricted.
【0008】[0008]
以下、本考案の好ましい実施例について図面を参照しながら説明する。 まず、図3には、本考案に係る安全装置を備えた高所作業車30を示している 。この高所作業車30は、下部走行装置31の上部に水平旋回が自在な旋回台3 2を備えている。旋回台32の上部には、テレスコープ状に伸縮自在に構成され たブーム33が起伏自在に取り付けられている。なお、下部走行装置31、旋回 台32およびブーム33は旋回台32内に取り付けられた油圧ポンプPから吐出 される圧油の供給を受けて作動する。 さらに、ブーム33の先端には作業台10が水平に保持されており、この作業 台10には作業者Mが搭乗することができる。 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. First, FIG. 3 shows an aerial work vehicle 30 equipped with a safety device according to the present invention. This aerial work vehicle 30 is provided with a swivel base 32 which is capable of horizontally swiveling above the lower traveling device 31. A boom 33, which is configured to be telescopically expandable and contractible, is attached to the upper part of the swivel base 32 so as to be capable of undulating. The lower traveling device 31, the swivel base 32, and the boom 33 are operated by receiving the pressure oil discharged from the hydraulic pump P mounted in the swivel base 32. Further, the workbench 10 is horizontally held at the tip of the boom 33, and the worker M can be mounted on the workbench 10.
【0009】 ところで、この作業台10には、作業者Mが作業台10から落下するのを防止 するための防護柵15が設けられており、その詳細を図1に示している。防護柵 15は、作業台10の四隅に垂直に立てられた4本の支柱16,…,16と、水 平方向に延びてそれら4本の支柱16,…,16の上端部および下部を連結する よう取り付けられた上部水平枠17および下部水平枠18とから構成されている 。各支柱16および各水平枠17,18はパイプ状の部材により溶接等によって 組み立てられている。By the way, the workbench 10 is provided with a protective fence 15 for preventing the worker M from falling from the workbench 10, the details of which are shown in FIG. The protection fence 15 connects four pillars 16, ..., 16 vertically set up at the four corners of the workbench 10 and extends in the horizontal direction to connect the upper ends and the lower parts of the four pillars 16 ,. It is composed of an upper horizontal frame 17 and a lower horizontal frame 18 attached so as to The columns 16 and the horizontal frames 17 and 18 are assembled by welding or the like using pipe-shaped members.
【0010】 そして、このように構成された作業台10に搭乗した作業者Mは、作業台10 に取り付けられた操作装置19の操作を通じて、下部走行装置31の走行作動を 制御したり旋回台32やブーム33の作動を制御したりして作業台10とともに 任意の高所に昇降移動等することができる。 しかし、そのような高所への移動中に、図3に示すように、作業台10に搭乗 した作業者Mが操作装置19の操作を誤る等して自らの身体を構造物Cに干渉さ せてしまうおそれがある。そして、このような場合には、作業台10のそれ以上 の構造物Cに接近する側への移動を緊急に停止させる必要がある。 そこで、この高所作業車30には、上記安全装置が備えられている。以下、そ の安全装置について図1および図2を用いて説明する。Then, the worker M who is on the workbench 10 configured as described above controls the traveling operation of the lower traveling device 31 and operates the swivel base 32 by operating the operation device 19 attached to the workbench 10. By controlling the operation of the boom 33 and the boom 33, it is possible to move up and down together with the workbench 10 to a desired height. However, during such movement to a high place, as shown in FIG. 3, an operator M on the workbench 10 makes a mistake in operating the operating device 19 so that his / her body interferes with the structure C. There is a risk of causing it. In such a case, it is necessary to urgently stop the movement of the workbench 10 toward the side closer to the structure C. Therefore, the work vehicle 30 is equipped with the above safety device. The safety device will be described below with reference to FIGS. 1 and 2.
【0011】 この安全装置20は、各支柱16の上下方向中間部にその支柱16の一部とし て取り付けられた弾性部材21と、この弾性部材21に内蔵された変形検出器2 2と、旋回台32内に取り付けれられた規制コントローラ23および規制バルブ (ソレノイドバルブ)24とから構成されている。 弾性部材21は、ラバー等の弾性材料から円柱状に成形されたものであり、通 常は、支柱16の上部や上部水平枠17(以下、これらをまとめて防護柵15の 上部という)を支柱16の下部に対して浮かせた状態で保持している。そして、 図2に示すように、その上端部に上方からの力Fを受けると圧縮変形するほか、 水平方向の力F′を受けるとせん断変形する。The safety device 20 includes an elastic member 21 attached to a middle portion of each of the columns 16 in the vertical direction as a part of the columns 16, a deformation detector 22 built in the elastic members 21, and a turning member. It is composed of a regulation controller 23 and a regulation valve (solenoid valve) 24 mounted in a table 32. The elastic member 21 is formed into a columnar shape from an elastic material such as rubber, and normally, the upper part of the pillar 16 and the upper horizontal frame 17 (hereinafter collectively referred to as the upper part of the protective fence 15) are pillars. The lower part of 16 is held in a floating state. Then, as shown in FIG. 2, the upper end portion thereof undergoes compressive deformation when it receives a force F from above, and shear deformation when it receives a horizontal force F ′.
【0012】 変形検出器22は、感圧スイッチ等からなり、弾性部材21に圧縮変形やせん 断変形があったときはそれを検出してバッテリ25から入力された電気信号を規 制信号として出力する。 規制コントローラ23は、変形検出器22から出力された規制信号を受けると 、規制バルブ24のソレノイドを励磁してそのバルブ24を閉止作動させる。 閉止作動した規制バルブ24は、油圧ポンプPから吐出された圧油が下部走行 装置31やブーム33等に供給されないようにそれらにつながる油路を閉止し、 タンク(図示せず)にドレンさせる。The deformation detector 22 is composed of a pressure-sensitive switch or the like, detects when the elastic member 21 has a compression deformation or a shear deformation, and outputs the electric signal input from the battery 25 as a control signal. To do. When the regulation controller 23 receives the regulation signal output from the deformation detector 22, the regulation controller 23 energizes the solenoid of the regulation valve 24 to close the valve 24. The closed regulating valve 24 closes the oil passage connected to the hydraulic fluid P discharged from the hydraulic pump P so that the hydraulic fluid is not supplied to the lower traveling device 31, the boom 33, etc., and drains it to a tank (not shown).
【0013】 このように構成された安全装置20では、図3に示すように、作業台10に搭 乗した作業者Mが構造物Cに干渉しそうになって、構造物Cを避けつつ手や身体 により防護柵15の上部にそれを押し下げたり側方に押しだしたりする方向への 力を加えると、弾性部材21が変形するとともに変形検出器22から規制信号が 出力され、それ以上の作業台10が構造物Cに接近するような移動が確実に阻止 される。こうして、作業者Mが防護柵15と構造物C間に挟まれるような事態を 未然に防止することができる。In the safety device 20 configured in this way, as shown in FIG. 3, the worker M who is on the workbench 10 is likely to interfere with the structure C, and avoids the structure C while holding the hand. When a force is applied to the upper part of the protective fence 15 by the body in the direction of pushing it down or pushing it out to the side, the elastic member 21 is deformed and a deformation signal is output from the deformation detector 22. Is surely prevented from moving so that it approaches the structure C. In this way, a situation in which the worker M is caught between the protective fence 15 and the structure C can be prevented in advance.
【0014】 なお、作業台10上の防護柵15の内側には、従来のものに必要とされたバー 部材等が存在せず、通常作業時には、防護柵15の内側いっぱいを使って作業を 行うことができる。したがって、作業の行い易さの面においては従来のものに比 べて有利である。さらに、そのようなバー部材等を設ける必要がないために、作 業台10の重量を軽くすることができ、従来に比べて作業台10の移動範囲を広 げることもできる。It should be noted that the inside of the protective fence 15 on the workbench 10 does not have a bar member or the like required for the conventional one, and during normal work, the work is carried out using the entire inside of the protective fence 15. be able to. Therefore, it is more advantageous than the conventional one in terms of workability. Further, since it is not necessary to provide such a bar member or the like, the weight of the workbench 10 can be reduced, and the range of movement of the workbench 10 can be expanded as compared with the conventional case.
【0015】[0015]
以上のように、本考案の安全装置では、弾性部材により浮いた状態に保持され た防護柵の上部にそれを押し下げたり側方に押し出したりする方向に力が加わる と、その力による弾性部材の弾性変形が検出され、自動的にそれ以上の作業台の 移動が規制されるようになっている。このため、本安全装置を用いれば、従来の ように防護柵のほかに上記押し下げ力等を受けるバー部材等を設ける必要がなく なり、通常の作業時においては防護柵の内側いっぱいを使用して円滑に作業を行 うことができる。また、バー部材等が設けられていない分作業台を軽量化するこ とができ、高所作業車における作業範囲、即ち、作業台の移動範囲を拡大するこ とができる。 As described above, in the safety device of the present invention, when a force is applied to the upper part of the protective fence that is held in a floating state by the elastic member in the direction of pushing it down or pushing it out to the side, the elastic member causes the elastic member to move. Elastic deformation is detected, and further movement of the workbench is automatically restricted. For this reason, with this safety device, it is not necessary to install a bar member that receives the above-mentioned pushing down force in addition to the protective fence as in the conventional case, and the inside of the protective fence can be used during normal work. You can work smoothly. Further, the workbench can be made lighter because the bar member and the like are not provided, and the work range in the aerial work vehicle, that is, the range of movement of the workbench can be expanded.
【図1】本考案に係る安全装置を備えた高所作業車の作
業台の斜視図である。FIG. 1 is a perspective view of a workbench of an aerial work vehicle equipped with a safety device according to the present invention.
【図2】上記安全装置の構成図である。FIG. 2 is a configuration diagram of the safety device.
【図3】上記高所作業車の側面図である。FIG. 3 is a side view of the aerial work vehicle.
10 作業台 15 防護柵 16 支柱 20 安全装置 21 弾性部材 22 変形検出器 30 高所作業車 M 作業者 C 構造物 P 油圧ポンプ 10 Workbench 15 Guard fence 16 Strut 20 Safety device 21 Elastic member 22 Deformation detector 30 High-altitude work vehicle M Worker C Structure P Hydraulic pump
Claims (1)
作業車の安全装置であって、 前記作業台に設けられた防護柵の支柱の上下方向中間部
にその支柱の一部として取り付けられ、前記防護柵の上
部側に加わった力によって弾性変形する弾性部材と、 この弾性部材に内蔵され、その弾性部材の弾性変形を検
出して前記作業台の昇降移動等を規制するための信号を
出力する変形検出手段とを備えたことを特徴とする高所
作業車の安全装置。1. A safety device for an aerial work vehicle equipped with a workbench that can be freely moved up and down, and the like, which is provided as a part of the pillar in the up-down direction middle part of the pillar of the protective fence provided on the workbench. An elastic member attached and elastically deformed by a force applied to the upper side of the protection fence, and a built-in elastic member for detecting elastic deformation of the elastic member and restricting up-and-down movement of the workbench, etc. A safety device for an aerial work vehicle, comprising: a deformation detecting means for outputting a signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3946992U JPH0592298U (en) | 1992-05-18 | 1992-05-18 | Safety equipment for aerial work vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3946992U JPH0592298U (en) | 1992-05-18 | 1992-05-18 | Safety equipment for aerial work vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0592298U true JPH0592298U (en) | 1993-12-17 |
Family
ID=12553927
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3946992U Pending JPH0592298U (en) | 1992-05-18 | 1992-05-18 | Safety equipment for aerial work vehicles |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0592298U (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100778533B1 (en) * | 2007-01-19 | 2007-11-22 | (주)하이로드 | Apparatus to protect impact for work-bench elevated position |
WO2017178737A1 (en) | 2016-04-15 | 2017-10-19 | Haulotte Group | Aerial-lift working-platform control desk with protection against crushing of the operator |
EP3539820A1 (en) * | 2018-03-12 | 2019-09-18 | MOBA - Mobile Automation AG | Control device |
FR3091524A1 (en) | 2019-01-09 | 2020-07-10 | Haulotte Group | Lifting platform with removable control console including operator crush protection |
JP2021014324A (en) * | 2019-07-10 | 2021-02-12 | 株式会社タダノ | Vehicle for high lift work |
-
1992
- 1992-05-18 JP JP3946992U patent/JPH0592298U/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100778533B1 (en) * | 2007-01-19 | 2007-11-22 | (주)하이로드 | Apparatus to protect impact for work-bench elevated position |
WO2017178737A1 (en) | 2016-04-15 | 2017-10-19 | Haulotte Group | Aerial-lift working-platform control desk with protection against crushing of the operator |
US11401148B2 (en) | 2016-04-15 | 2022-08-02 | Haulotte Group | Aerial-lift working-platform control desk with protection against crushing of the operator |
EP3539820A1 (en) * | 2018-03-12 | 2019-09-18 | MOBA - Mobile Automation AG | Control device |
WO2019175107A1 (en) * | 2018-03-12 | 2019-09-19 | Moba Mobile Automation Ag | Operating device |
FR3091524A1 (en) | 2019-01-09 | 2020-07-10 | Haulotte Group | Lifting platform with removable control console including operator crush protection |
WO2020144601A1 (en) | 2019-01-09 | 2020-07-16 | Haulotte Group | Aerial lift with removable control console, comprising a protection device for preventing the operator from being crushed |
JP2021014324A (en) * | 2019-07-10 | 2021-02-12 | 株式会社タダノ | Vehicle for high lift work |
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