JP3569889B2 - Submersible hydraulic cylinder direct suspension type gate opening detection device - Google Patents

Submersible hydraulic cylinder direct suspension type gate opening detection device Download PDF

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Publication number
JP3569889B2
JP3569889B2 JP2000075457A JP2000075457A JP3569889B2 JP 3569889 B2 JP3569889 B2 JP 3569889B2 JP 2000075457 A JP2000075457 A JP 2000075457A JP 2000075457 A JP2000075457 A JP 2000075457A JP 3569889 B2 JP3569889 B2 JP 3569889B2
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JP
Japan
Prior art keywords
gate
water
hydraulic cylinder
chain
suspension type
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.)
Expired - Fee Related
Application number
JP2000075457A
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Japanese (ja)
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JP2001262549A (en
Inventor
芳夫 三和
俊彦 西尾
伸二 小原
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Nippon Sharyo Ltd
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Nippon Sharyo Ltd
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Priority to JP2000075457A priority Critical patent/JP3569889B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、水没型の油圧シリンダ直吊型水門扉の開度検出装置に関する。
【0002】
【従来の技術】
開度検出装置として、水門扉をウインチ等の回転機構のワイヤロープで吊持して昇降する構成では、ウインチ等の回転を直接利用して水門扉の移動量を検出機構で検出し、検出機構のデータを、信号出力機構で電気信号に変換して出力するものがある。また、水門扉を油圧シリンダにて昇降する構成では、水門扉の昇降量を回転量に変換する変換機構として、水路上部に設けたプーリーに、一端を水門扉に連結したメッセンジャーワイヤを掛け渡し、メッセンジャーワイヤの他端にカウンターウエイトを取り付けて、水門扉の開閉によってプーリーを回転し、この回転を利用して水門扉の移動量を検出機構で検出し、検出機構のデータを、信号出力機構で電気信号に変換して出力するものがある。
【0003】
【発明が解決しようとする課題】
ところが、上述の構成では、ワイヤロープやメッセンジャーワイヤ等は、強風時や河川洪水時に濁流にさらされた場合に、ワイヤ自体が大きく横振れすることがあり、また、気温や重量の関係でワイヤが伸縮するので誤差が生じやすい。
【0004】
そこで本発明は、精度の高い油圧シリンダ直吊型水門扉の開度検出装置を提供することを目的としている。
【0005】
【課題を解決するための手段】
上記した目的を達成するため、本発明は、油圧シリンダに昇降可能に吊持される水没型の水門扉と、該水没型の水門扉の昇降量を回転量に変換する変換機構と、該変換機構で変換された回転量で水没型の水門扉の移動量を検出する検出機構とを有する水没型の油圧シリンダ直吊型水門扉の開度検出装置において、前記変換機構を、前記水没型の水門扉が開閉する水路上部に設けた上下一対のスプロケットと、両スプロケット間に張設されるチェーンと、該チェーンと前記水没型の水門扉とを連結するアームとで構成したことを特徴としている。また、前記両スプロケット及びチェーンを保護カバーで覆うことにより、濁流の影響、流水中の泥・塵埃にさらされること、水中生物の付着等を低減できる。
【0006】
【発明の実施の形態】
以下、本発明を、図面に示す実施形態例に基づいて、さらに詳細に説明する。河川の水中に水没している堰堤1内に形成された水路2を開閉する水没型の水門扉3は、上部の架台4にピストンロッド5aの先端を接続した油圧シリンダ5のシリンダボア5bに取り付けられ、ピストンロッド5aの伸縮により昇降する。
【0007】
水路2上部の堰堤1内壁には、水門扉3の昇降量を回転量に変換する変換機構として、上下一対のスプロケット6,7と、両スプロケット6,7間に張設されるチェーン8と、該チェーン8と水門扉2の上部とを連結するアーム9とが設けられている。
【0008】
上部スプロケット6の横には、上記変換機構で変換された回転量で水門扉3の移動量を検出する検出機構である防水型のシンクロ発信器10が配設され、該シンクロ発信器10の軸11とスプロケット6の軸とが結合されている。下部スプロケット7及びチェーン8は、アーム9移動用のスリットを形成した保護カバー12で覆われ、また、上部スプロケット6及びシンクロ発信器10は、保護カバー13で覆われている。
【0009】
シンクロ発信器10は、スプロケット6により回転した回転角度の位相の変動を直接シンクロ変換器S/Iに出力する出力機構TXと、回転角度の位相の変動を増幅してシンクロデジタル変換器S/Dに出力する出力機構BCXとを有している。
【0010】
シンクロ変換器S/Iに出力された電気信号は、開度表示計PIに水門扉3の開閉度として表示される。シンクロデジタル変換器S/Dに出力された電気信号は、シンクロデジタル変換器S/Dでデジタル信号に変換されてカウント積算される。シンクロデジタル変換器S/Dには、リミットスイッチL1,L2,L3,L4が設けられ、前記デジタル信号の積算量によって、各リミットスイッチL1,L2,L3,L4の接点が作動し、この作動による信号を水門扉3の制御回路に用いる。
【0011】
したがって、油圧シリンダ5のピストンロッド5aの伸縮により水門扉3を昇降すると、アーム9を介してチェーン8が両スプロケット6,7を回転し、シンクロ発信器10を介して水門扉3の開閉度を開度表示計14に表示する。
【0012】
また、シンクロ発信器10の検出機構を回転する変換機構として、両スプロケット6,7間にチェーン8を張設したので、メッセンジャーワイヤに比べて、濁流の影響によるチェーン8の横振れが少なく、また、アーム9を介してチェーン8と水門扉3とを連結しているので、チェーン8に常時テンションがかかっているから、濁流の動水圧影響を受けにくい。さらに、両スプロケット6,7、チェーン8及びシンクロ発信器10を保護カバー12,13で覆っているから、濁流の影響、流水中の泥・塵埃にさらされること、水中生物の付着等を低減できるので、本実施形態例の如く、水没型の水門扉に機能を発揮する。
【0013】
なお、上記実施形態例では、検出機構としてシンクロ発信器10を用いたもので説明したが、エンコーダ等の回転角度検出機構を用いてもよい。
【0014】
【発明の効果】
以上説明したように、本発明の油圧シリンダ直吊型水門扉の開度検出装置は、油圧シリンダにて昇降する水門扉の昇降量を回転量に変換する変換機構を、水門扉が開閉する水路上部に設けた上下一対のスプロケットと、両スプロケット間に張設されるチェーンと、チェーンと水門扉とを連結するアームとで構成したので、濁流の影響によるチェーンの横振れが少なく、精度の高い開度の検出ができる。また、両スプロケット及びチェーンを保護カバーで覆うことにより、濁流の影響、流水中の泥・塵埃にさらされること、水中生物の付着等を低減できるので、特に水門全体が水没している水没型水門扉において効果がある。
【図面の簡単な説明】
【図1】変換機構の正面図
【図2】油圧シリンダ直吊型水門扉の側面図
【図3】油圧シリンダ直吊型水門扉の正面図
【図4】シンクロ発信器の回路図
【図5】シンクロ発信器と受信機の回路図
【符号の説明】
2…水路、3…水門扉、5…油圧シリンダ、6…上部スプロケット、7…下部スプロケット、8…チェーン、9…アーム、10…シンクロ発信器、12,13…保護カバー
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a submersible hydraulic cylinder direct suspension type gate opening detection device.
[0002]
[Prior art]
In the configuration in which the gate is suspended by a wire rope of a rotating mechanism such as a winch as an opening detection device, the amount of movement of the gate is detected by the detecting mechanism by directly utilizing the rotation of the winch and the detecting mechanism. Is converted into an electric signal by a signal output mechanism and output. In the configuration in which the gate is raised and lowered by a hydraulic cylinder, a messenger wire having one end connected to the gate is passed over a pulley provided at an upper part of the waterway as a conversion mechanism for converting a lifting amount of the gate into a rotation amount. Attach a counterweight to the other end of the messenger wire, rotate the pulley by opening and closing the gate, use this rotation to detect the amount of movement of the gate with the detection mechanism, and use the signal output mechanism to detect the data of the detection mechanism with the signal output mechanism. There are those that convert the signal into an electric signal and output it.
[0003]
[Problems to be solved by the invention]
However, in the above-described configuration, when the wire rope, the messenger wire, and the like are exposed to a turbid current during a strong wind or a river flood, the wire itself may largely swing, and due to temperature and weight, the wire may be swayed. Error occurs easily due to expansion and contraction.
[0004]
Therefore, an object of the present invention is to provide a highly accurate hydraulic cylinder direct suspension type gate opening detection device.
[0005]
[Means for Solving the Problems]
To achieve the above object, the present invention includes a submerged type of water gates to be suspended to be vertically movable in the hydraulic cylinder, a conversion mechanism for converting the rotation amount of the lift amount of water gates of the submerged type, the conversion A submersible hydraulic cylinder direct suspension type water gate door opening detection device having a detection mechanism for detecting the movement amount of the submerged water gate with the rotation amount converted by the mechanism, wherein the conversion mechanism is the submerged type It is characterized by comprising a pair of upper and lower sprockets provided at the upper part of the water channel that the gate opens and closes, a chain stretched between the two sprockets, and an arm connecting the chain and the submerged type gate. . In addition, by covering the two sprockets and the chain with the protective cover, it is possible to reduce the effects of turbid currents, exposure to mud and dust in running water, adhesion of underwater organisms, and the like.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in more detail based on embodiments shown in the drawings. A submerged sluice gate 3 for opening and closing a water channel 2 formed in a dam 1 submerged in the water of a river is attached to a cylinder bore 5b of a hydraulic cylinder 5 having a top 4 connected to a tip of a piston rod 5a. Is moved up and down by the expansion and contraction of the piston rod 5a.
[0007]
A pair of upper and lower sprockets 6 and 7 and a chain 8 stretched between the sprockets 6 and 7 are provided on the inner wall of the dam 1 above the waterway 2 as a conversion mechanism for converting the amount of elevation of the gate 3 into the amount of rotation. An arm 9 connecting the chain 8 and the upper part of the gate 2 is provided.
[0008]
Beside the upper sprocket 6, there is provided a waterproof type synchro transmitter 10 which is a detection mechanism for detecting the amount of movement of the gate 3 with the rotation amount converted by the conversion mechanism. 11 and the shaft of the sprocket 6 are connected. The lower sprocket 7 and the chain 8 are covered with a protective cover 12 formed with a slit for moving the arm 9, and the upper sprocket 6 and the synchro transmitter 10 are covered with a protective cover 13.
[0009]
The synchro transmitter 10 includes an output mechanism TX for directly outputting the phase change of the rotation angle rotated by the sprocket 6 to the synchro converter S / I, and a synchro digital converter S / D for amplifying the phase change of the rotation angle. And an output mechanism BCX.
[0010]
The electric signal output to the synchro converter S / I is displayed on the opening indicator PI as the opening / closing degree of the gate 3. The electric signal output to the synchro-digital converter S / D is converted into a digital signal by the synchro-digital converter S / D and counted and integrated. The synchro digital converter S / D is provided with limit switches L1, L2, L3, and L4, and the contacts of the limit switches L1, L2, L3, and L4 are operated according to the integrated amount of the digital signal. The signal is used for the control circuit of the gate 3.
[0011]
Therefore, when the sluice door 3 is moved up and down by the expansion and contraction of the piston rod 5 a of the hydraulic cylinder 5, the chain 8 rotates both sprockets 6 and 7 via the arm 9, and the degree of opening and closing of the sluice door 3 via the synchro transmitter 10. It is displayed on the opening indicator 14.
[0012]
Further, since the chain 8 is stretched between the two sprockets 6 and 7 as a conversion mechanism for rotating the detection mechanism of the synchro transmitter 10, the side deflection of the chain 8 due to the influence of the turbulent flow is smaller than that of the messenger wire, and Since the chain 8 and the gate 3 are connected via the arm 9, the tension is always applied to the chain 8, so that the chain 8 is hardly affected by the turbulent flow hydraulic pressure. Further, since the two sprockets 6, 7, the chain 8, and the synchro transmitter 10 are covered with the protective covers 12, 13, it is possible to reduce the effects of turbidity, exposure to mud and dust in running water, and adhesion of underwater organisms. Therefore, as in the present embodiment, it functions as a submerged floodgate.
[0013]
In the above embodiment, the synchro oscillator 10 is used as the detection mechanism. However, a rotation angle detection mechanism such as an encoder may be used.
[0014]
【The invention's effect】
As described above, the opening detection device of the hydraulic cylinder direct suspension type sluice gate of the present invention includes a conversion mechanism for converting the amount of elevation of the sluice gate ascending and descending by the hydraulic cylinder into the amount of rotation, and a channel for opening and closing the sluice gate. It consists of a pair of upper and lower sprockets provided at the top, a chain stretched between both sprockets, and an arm connecting the chain and the gate, so there is little horizontal run-out of the chain due to the effects of turbidity and high accuracy The opening can be detected. In addition, by covering both sprockets and chains with protective covers, the effects of turbid currents, exposure to mud and dust in running water, and the adhesion of underwater organisms can be reduced. Effective at the gate.
[Brief description of the drawings]
FIG. 1 is a front view of a conversion mechanism. FIG. 2 is a side view of a hydraulic cylinder direct suspension type floodgate. FIG. 3 is a front view of a hydraulic cylinder direct suspension type floodgate. FIG. 4 is a circuit diagram of a synchro transmitter. ] Circuit diagram of synchro transmitter and receiver [Explanation of symbols]
2 water channel, 3 gate gate, 5 hydraulic cylinder, 6 upper sprocket, 7 lower sprocket, 8 chain, 9 arm, 10 synchro transmitter, 12, 13 protection cover

Claims (2)

油圧シリンダに昇降可能に吊持される水没型の水門扉と、該水没型の水門扉の昇降量を回転量に変換する変換機構と、該変換機構で変換された回転量で水没型の水門扉の移動量を検出する検出機構とを有する水没型の油圧シリンダ直吊型水門扉の開度検出装置において、前記変換機構を、前記水没型の水門扉が開閉する水路上部に設けた上下一対のスプロケットと、両スプロケット間に張設されるチェーンと、該チェーンと前記水没型の水門扉とを連結するアームとで構成したことを特徴とする水没型の油圧シリンダ直吊型水門扉の開度検出装置。And submergence type of water gates to be suspended to be vertically movable in the hydraulic cylinder, a conversion mechanism for converting the rotation amount of the lift amount of water gates of the submerged type, water submerged type with the rotation amount that has been converted by said converting mechanism A submersible hydraulic cylinder direct suspension type water gate opening degree detection device having a detection mechanism for detecting the amount of movement of the gate, wherein the conversion mechanism is provided in a pair of upper and lower parts provided at an upper part of a water channel where the water submersion type gate door opens and closes. A submerged hydraulic cylinder direct suspension type water gate, comprising: a sprocket, a chain stretched between the two sprockets, and an arm connecting the chain and the water submersible water gate. Degree detection device. 前記両スプロケット及びチェーンを保護カバーで覆ったことを特徴とする請求項1記載の油圧シリンダ直吊型水門扉の開度検出装置。2. The opening detecting device for a hydraulic cylinder direct suspension type water gate according to claim 1, wherein the two sprockets and the chain are covered with a protective cover.
JP2000075457A 2000-03-17 2000-03-17 Submersible hydraulic cylinder direct suspension type gate opening detection device Expired - Fee Related JP3569889B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000075457A JP3569889B2 (en) 2000-03-17 2000-03-17 Submersible hydraulic cylinder direct suspension type gate opening detection device

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Application Number Priority Date Filing Date Title
JP2000075457A JP3569889B2 (en) 2000-03-17 2000-03-17 Submersible hydraulic cylinder direct suspension type gate opening detection device

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JP3569889B2 true JP3569889B2 (en) 2004-09-29

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