JP3167158U - Hydraulic device - Google Patents

Hydraulic device Download PDF

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JP3167158U
JP3167158U JP2011000401U JP2011000401U JP3167158U JP 3167158 U JP3167158 U JP 3167158U JP 2011000401 U JP2011000401 U JP 2011000401U JP 2011000401 U JP2011000401 U JP 2011000401U JP 3167158 U JP3167158 U JP 3167158U
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adjustment screw
screw
adjusting screw
housing
mounting member
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芝原　英二
英二 芝原
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Shimadzu Corp
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Abstract

【課題】筐体に対して螺進退することにより逆止弁の弁体を弁座から離間する方向に駆動することが可能な調節ねじと、この調節ねじを螺進退させるべく該調節ねじに接続され少なくとも中立位置と開弁位置との間を回転移動可能な操作レバーを備え、操作レバーを中立位置に配した際の調節ねじの筐体に対する相対位置を確実に決定できる液圧装置を提供する。【解決手段】筐体１０と調節ねじ２２との間に設けられ該調節ねじ２２と一体的に回動可能であるとともに前記調節ねじ２２の基端部を内部に収納してなる調節ねじ取付部材２３とを設える。さらに、操作レバー６を中立位置に配した際の前記調節ねじ２２の前記調節ねじ取付部材２３に対する相対位置を固定すべく調節ねじ２２に該調節ねじ２２の進退方向と異なる方向に作用を与え、該調節ねじ２２を前記調節ねじ取付部材２３に圧着させるための固定部材２４とを備える構成を採用する。【選択図】図４An adjustment screw capable of driving a valve body of a check valve in a direction away from a valve seat by reciprocating with respect to a housing, and connected to the adjustment screw to reciprocate the adjusting screw. A hydraulic device that includes an operation lever that is rotatable at least between a neutral position and a valve open position, and that can reliably determine a relative position of the adjustment screw to the housing when the operation lever is disposed at the neutral position. . An adjusting screw mounting member is provided between a housing and an adjusting screw, and is rotatable integrally with the adjusting screw and houses a base end of the adjusting screw therein. 23. Further, in order to fix the relative position of the adjusting screw 22 with respect to the adjusting screw mounting member 23 when the operating lever 6 is arranged at the neutral position, the adjusting screw 22 is acted on in a direction different from the advancing and retracting direction of the adjusting screw 22; A configuration including a fixing member 24 for pressing the adjusting screw 22 to the adjusting screw mounting member 23 is adopted. [Selection diagram] FIG.

Description

本考案は、液圧により作動するアクチュエータに接続する液圧装置に関する。   The present invention relates to a hydraulic device connected to an actuator that operates by hydraulic pressure.

従来より、主に荷役装置に用いられる液圧装置として、以下に述べるようなものが考えられている（例えば、特許文献１を参照）。この液圧装置は、図１〜図３に示すように、作動液を貯蔵するためのタンク１、このタンク１から作動液を駆動対象物たるアクチュエータ等に供給するための液圧供給源たるポンプ２、このポンプ２を駆動するためのモータ３、このモータ３に電力を供給する電気回路の開閉を行う電磁接触器４、この電磁接触器４を作動させるための電気回路の開閉を行う手動スイッチ５、少なくとも中立位置Ｃと開弁位置たる下降位置Ｄとの間、及び中立位置Ｃと上昇位置Ｕとの間を回転移動可能であるとともに、回転操作力を受け付けて、前記上昇位置Ｕに配された状態で前記電磁接触器４に通電させるべく手動スイッチ５を押圧する操作レバー６と、前記ポンプ２と前記アクチュエータとを連通する第１の作動液流通路ａ８、及び前記前記タンク１と前記アクチュエータとを連通する第２の作動液流通路ａ９を備えるプレートａ７とを備えている。   Conventionally, what is described below is considered as a hydraulic device mainly used for a cargo handling device (for example, refer to patent documents 1). As shown in FIGS. 1 to 3, the hydraulic device includes a tank 1 for storing hydraulic fluid, and a pump as a hydraulic pressure supply source for supplying hydraulic fluid from the tank 1 to an actuator that is a driving object. 2, a motor 3 for driving the pump 2, an electromagnetic contactor 4 for opening and closing an electric circuit for supplying electric power to the motor 3, and a manual switch for opening and closing an electric circuit for operating the electromagnetic contactor 4 5. It can move at least between the neutral position C and the lowered position D, which is the valve opening position, and between the neutral position C and the raised position U, and receives a rotational operation force, and is arranged at the raised position U. In this state, the operation lever 6 that presses the manual switch 5 to energize the electromagnetic contactor 4, the first hydraulic fluid flow passage a 8 that communicates the pump 2 and the actuator, and the tank 1. Serial and an actuator and a plate a7 comprising a second hydraulic fluid flow passage a9 communicating.

ここで、プレートａ７は、図５に示すように、前記アクチュエータに接続してなる出力ポートａ１１、作動液供給源であるポンプ２に接続してなる入力ポートａ１２、タンク１に接続してなるタンクポートａ１３、前記入力ポートａ１２と前記出力ポートａ１１とを連通する前記第１の作動液流通路ａ８、及び前記入力ポートａ１２と前記タンクポートａ１３とを連通する前記第２の作動液流通路ａ９を有する筐体ａ１０と、前記第１の作動液流通路ａ８中に設けられる第１の逆止弁ａ１４と、前記第２の作動液流通路ａ９中に設けられる第２の逆止弁ａ１５と、前記第１の作動液流通路ａ８と前記第２の作動液流通路ａ９とを連通し途中にリリーフ弁ａ１７を設けてなるリリーフ通路ａ１６とを備えている。   Here, as shown in FIG. 5, the plate a7 includes an output port a11 connected to the actuator, an input port a12 connected to the pump 2 as a working fluid supply source, and a tank connected to the tank 1. A port a13, the first hydraulic fluid passage a8 that communicates the input port a12 and the output port a11, and the second hydraulic fluid passage a9 that communicates the input port a12 and the tank port a13. A housing a10, a first check valve a14 provided in the first hydraulic fluid flow passage a8, a second check valve a15 provided in the second hydraulic fluid flow passage a9, A relief passage a16 provided with a relief valve a17 in the middle of communication between the first hydraulic fluid passage a8 and the second hydraulic fluid passage a9.

前記第１の逆止弁ａ１４及び前記リリーフ通路ａ１６は、この種の液圧装置に用いられるものとして広く知られているものと同様の構成を有する。   The first check valve a14 and the relief passage a16 have the same configuration as that widely used for this type of hydraulic device.

一方、前記第２の逆止弁ａ１５は、前記第２の作動液流通路ａ９中に設けてなる弁座ａ１９、この弁座ａ１９に着座することにより作動液の流通を禁止する弁体ａ２０、及びこの弁体２０を弁座ａ１９に着座する方向に付勢する付勢手段たるばねａ２１を備えた逆止弁本体ａ１８と、前記操作レバーａ６が前記中立位置Ｃと前記下降位置Ｄとの間での回転操作を受ける際の操作力の伝達を受けて前記筐体ａ１０に対して螺進退することにより前記ばねａ２１の付勢力に反して前記弁体ａ２０を前記弁座ａ１９から離間する方向に駆動することが可能な調節ねじａ２２とを備えている。この調節ねじａ２２の基端部には、ナットＮを介して前記操作レバーａ６を取り付けるようにしている。ここで、前記操作レバー６が前記下降位置Ｄに移動し、前記弁体２０が前記弁座１９から離間した際には、これら弁体ａ２０と弁座ａ１９との間の空間が、アクチュエータからタンク１に戻る作動液の流量を制御する絞り２５として機能する。   On the other hand, the second check valve a15 includes a valve seat a19 provided in the second hydraulic fluid flow passage a9, and a valve body a20 that prohibits the flow of hydraulic fluid by being seated on the valve seat a19. And a check valve body a18 provided with a spring a21 as a biasing means for biasing the valve body 20 in the direction of seating on the valve seat a19, and the operation lever a6 between the neutral position C and the lowered position D. The valve body a20 is moved away from the valve seat a19 against the urging force of the spring a21 by receiving the transmission of the operation force at the time of receiving the rotation operation and reciprocating with respect to the housing a10. And an adjusting screw a22 that can be driven. The operation lever a6 is attached to the base end portion of the adjustment screw a22 via a nut N. Here, when the operating lever 6 moves to the lowered position D and the valve body 20 is separated from the valve seat 19, the space between the valve body a20 and the valve seat a19 is changed from the actuator to the tank. It functions as a throttle 25 for controlling the flow rate of the hydraulic fluid returning to 1.

このような液圧装置を組み立てる際には、筐体ａ１０に設けた雌ねじ孔ａ１０ｘに前記調節ねじａ２２を螺合し、前記操作レバーａ６を中立位置に配した状態にとるべき位置まで前記調節ねじａ２２を螺進退させた後、前記操作レバーａ６を中立位置Ｃに配した状態でこの操作レバーａ６を前記調節ねじａ２２の基端部にナットＮを介して取り付けるようにしている。   When assembling such a hydraulic device, the adjustment screw a22 is screwed into a female screw hole a10x provided in the housing a10, and the adjustment screw is moved to a position where the operation lever a6 is to be placed in a neutral position. After a22 is screwed back and forth, the operation lever a6 is attached to the base end portion of the adjustment screw a22 via a nut N in a state where the operation lever a6 is disposed at the neutral position C.

しかし、このような構成を採用した場合、以下のような不具合が発生しうる。具体的には、前記ナットＮを介して前記操作レバーａ６を前記調節ねじａ２２に取り付ける際に、ナットＮの回転に伴い前記調節ねじａ２２がつれて回転することがある。ここで前記調節ねじａ２２が回転すると、この調節ねじａ２２が筐体ａ１０との間で螺進退する。特に、前記調節ねじａ２２が締着方向に回転すると、この調節ねじａ２２の先端部が弁体ａ２０に接触し、前記操作レバーａ６を中立位置に配した状態で弁体ａ２０が弁座ａ１９から離間し、作動液の流通を禁止すべく操作レバーａ６を中立位置Ｃに配したにも関わらず液漏れが発生してアクチュエータからタンク１に向けて作動液が流通するという不具合が発生することがある。   However, when such a configuration is adopted, the following problems may occur. Specifically, when the operation lever a6 is attached to the adjustment screw a22 via the nut N, the adjustment screw a22 may rotate along with the rotation of the nut N. Here, when the adjusting screw a22 rotates, the adjusting screw a22 is screwed back and forth between the housing a10. In particular, when the adjusting screw a22 rotates in the fastening direction, the tip of the adjusting screw a22 comes into contact with the valve body a20, and the valve body a20 is separated from the valve seat a19 with the operation lever a6 disposed at the neutral position. However, in spite of the fact that the operation lever a6 is disposed at the neutral position C to prohibit the flow of the hydraulic fluid, there may be a problem that the fluid leaks and the hydraulic fluid flows from the actuator toward the tank 1. .

実開昭６３−３５７２号公報Japanese Utility Model Publication No. 63-3572

以上に鑑みてなされた本考案は、筐体に対して螺進退することにより逆止弁の弁体を弁座から離間する方向に駆動することが可能な調節ねじと、この調節ねじを螺進退させるべく該調節ねじに接続され少なくとも中立位置と開弁位置との間を回転移動可能な操作レバーを備えた液圧装置において、操作レバーを中立位置に配した際の調節ねじの筐体に対する相対位置を確実に決定できるようにすることを所期の目的とする。   The present invention made in view of the above is an adjustment screw capable of driving the valve body of the check valve away from the valve seat by screwing back and forth with respect to the housing, and screwing the screw back and forth. In a hydraulic device having an operating lever connected to the adjusting screw and capable of rotating between at least a neutral position and a valve opening position, the relative position of the adjusting screw to the housing when the operating lever is arranged in the neutral position The intended purpose is to ensure that the position can be determined.

すなわち本考案に係る液圧装置は、駆動対象物に接続してなる出力ポート、及びこの出力ポートに連通し前記駆動対象物との間で作動液を出し入れするための作動液流通路を有する筐体と、この筐体の作動液流通路中に設けられ弁体が弁座に着座することにより作動液の流通を禁止する逆止弁と、筐体に対して螺進退することによりこの逆止弁の弁体を弁座から離間する方向に駆動することが可能な調節ねじと、この調節ねじを螺進退させるべく該調節ねじに接続され少なくとも中立位置と開弁位置との間を回転移動可能であるとともに、回転操作力を受け付けて前記調節ねじに伝達する操作レバーと、この調節ねじと前記筐体との間に設けられ該調節ねじと一体的に回動可能であるとともにこの調節ねじの基端部を内部に収納してなる調節ねじ取付部材と、前記操作レバーを中立位置に配した際の前記調節ねじの前記調節ねじ取付部材に対する相対位置を固定すべく調節ねじに該調節ねじの進退方向と異なる方向に作用を与え、該調節ねじを前記調節ねじ取付部材に圧着させるための固定部材とを備えていることを特徴とする。   That is, a hydraulic device according to the present invention includes a housing having an output port connected to an object to be driven, and a working fluid flow path that communicates with the output object and allows the working fluid to flow in and out of the object to be driven. Body, a check valve provided in the hydraulic fluid flow passage of the casing and prohibiting the flow of hydraulic fluid when the valve element is seated on the valve seat, and the check valve by screwing back and forth with respect to the casing. An adjustment screw that can drive the valve body of the valve away from the valve seat, and is connected to the adjustment screw so that the adjustment screw can be moved back and forth, and can be rotated at least between the neutral position and the valve opening position. And an operating lever that receives a rotational operating force and transmits it to the adjusting screw, and is provided between the adjusting screw and the housing, and is rotatable integrally with the adjusting screw. Adjustment by storing the base end inside An adjustment screw and an adjustment screw acting in a direction different from the advancing and retreating direction of the adjustment screw to fix the relative position of the adjustment screw with respect to the adjustment screw attachment member when the operation lever is disposed at a neutral position; And a fixing member for press-fitting the adjusting screw to the adjusting screw mounting member.

このようなものであれば、前記操作レバーは前記調節ねじではなく前記調節ねじ取付部材に取り付けられるので、この操作レバーを前記調節ねじ取付部材に取り付ける際に該調節ねじ取付部材が回転し前記筐体に対して螺進退した場合であっても、前記調節ねじと該調節ねじ取付部材との相対位置を調節して前記操作レバーを中立位置に配した際にとるべき位置に前記調節ねじを配した後、固定部材を介して該調節ねじを前記調節ねじ取付部材に圧着すれば、この圧着操作の際には前記調節ねじは進退方向への作用を受けず、従って操作レバーを中立位置に配した際の調節ねじの筐体に対する相対位置を確実に決定できる。   In such a case, the operating lever is attached to the adjusting screw mounting member instead of the adjusting screw. Therefore, when the operating lever is attached to the adjusting screw mounting member, the adjusting screw mounting member rotates to rotate the housing. Even when the screw is moved back and forth with respect to the body, the adjustment screw is arranged at a position to be taken when the operation lever is arranged at the neutral position by adjusting the relative position between the adjustment screw and the adjustment screw mounting member. After that, if the adjusting screw is crimped to the adjusting screw mounting member via a fixing member, the adjusting screw is not affected in the forward / backward direction at the time of the crimping operation, so that the operating lever is arranged at the neutral position. The relative position of the adjusting screw with respect to the housing can be reliably determined.

特に、前記ねじ固定部材が前記調節ねじに与える作用の方向が、該調節ねじの進退方向と直交する方向であれば、前段で述べたような、圧着操作の際に前記調節ねじが進退方向への作用を受けないという効果をより確実に得ることができる。   In particular, if the direction of the action of the screw fixing member on the adjustment screw is a direction perpendicular to the advance / retreat direction of the adjustment screw, the adjustment screw moves in the advance / retreat direction during the crimping operation as described in the previous stage. The effect of not receiving the action of can be obtained more reliably.

本考案によれば、筐体に対して螺進退することにより逆止弁の弁体を弁座から離間する方向に駆動することが可能な調節ねじと、この調節ねじを螺進退させるべく該調節ねじに接続され少なくとも中立位置と開弁位置との間を回転移動可能な操作レバーを備えた液圧装置において、操作レバーを中立位置に配した際の調節ねじの筐体に対する相対位置を確実に決定できる。   According to the present invention, the adjustment screw capable of driving the valve body of the check valve away from the valve seat by screwing back and forth with respect to the housing, and the adjustment screw to screw the adjustment screw back and forth. In a hydraulic device with an operating lever connected to the screw and capable of rotating between at least a neutral position and a valve-opening position, the relative position of the adjusting screw relative to the housing is ensured when the operating lever is placed in the neutral position. Can be determined.

本考案の一実施形態の液圧装置を示す液圧回路を示す図。The figure which shows the hydraulic circuit which shows the hydraulic apparatus of one Embodiment of this invention. 同実施形態の液圧装置を示す正面図。The front view which shows the hydraulic apparatus of the embodiment. 同実施形態の液圧装置を示す側面図。The side view which shows the hydraulic apparatus of the embodiment. 同実施形態の液圧装置を示す要部断面図。The principal part sectional drawing which shows the hydraulic apparatus of the embodiment. 従来の液圧装置を示す要部断面図。Sectional drawing which shows the principal part which shows the conventional hydraulic device.

以下、本考案の一実施形態を、図面を参照して説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

本実施形態に係る液圧装置は、図１〜図３に示すように、作動液を貯蔵するためのタンク１、このタンク１から作動液を駆動対象物たるアクチュエータ等に供給するための液圧供給源たるポンプ２、このポンプ２を駆動するためのモータ３、このモータ３に電力を供給する電気回路の開閉を行う電磁接触器４、この電磁接触器４を作動させるための電気回路の開閉を行う手動スイッチ５、少なくとも中立位置Ｃと開弁位置たる下降位置Ｄとの間、及び中立位置Ｃと上昇位置Ｕとの間を回転移動可能であるとともに、回転操作力を受け付けて、前記上昇位置Ｕに配された状態で前記電磁接触器４に通電させるべく手動スイッチ５を押圧する操作レバー６と、前記ポンプ２と前記アクチュエータとを連通する第１の作動液流通路８、及び前記前記タンク１と前記アクチュエータとを連通する第２の作動液流通路９を備えるプレート７とを備えている。   As shown in FIGS. 1 to 3, the hydraulic apparatus according to this embodiment includes a tank 1 for storing hydraulic fluid, and a hydraulic pressure for supplying hydraulic fluid from the tank 1 to an actuator that is a driving object. A pump 2 as a supply source, a motor 3 for driving the pump 2, an electromagnetic contactor 4 for opening and closing an electric circuit for supplying electric power to the motor 3, and an opening and closing for an electric circuit for operating the electromagnetic contactor 4 The manual switch 5 for performing the rotation is movable at least between the neutral position C and the lowered position D, which is the valve opening position, and between the neutral position C and the raised position U. The operation lever 6 that presses the manual switch 5 to energize the electromagnetic contactor 4 in the state of being disposed at the position U, the first hydraulic fluid flow passage 8 that communicates the pump 2 and the actuator, and the And a plate 7 which comprises a second hydraulic fluid flow passage 9 communicating with ink 1 and the said actuator.

前記プレート７は、図４に示すように、前記アクチュエータに接続してなる出力ポート１１、作動液供給源であるポンプ２に接続してなる入力ポート１２、タンク１に接続してなるタンクポート１３、前記入力ポート１２と前記出力ポート１１とを連通する前記第１の作動液流通路８、及び前記入力ポート１２と前記タンクポート１３とを連通する前記第２の作動液流通路９を有する筐体１０と、前記第１の作動液流通路８中に設けられる第１の逆止弁１４と、前記第２の作動液流通路９中に設けられる第２の逆止弁１５と、前記第１の作動液流通路８と前記第２の作動液流通路９とを連通し途中にリリーフ弁１７を設けてなるリリーフ通路１６とを備えている。   As shown in FIG. 4, the plate 7 includes an output port 11 connected to the actuator, an input port 12 connected to the pump 2 serving as a hydraulic fluid supply source, and a tank port 13 connected to the tank 1. A housing having the first working fluid flow passage 8 communicating the input port 12 and the output port 11 and the second working fluid flow passage 9 communicating the input port 12 and the tank port 13; Body 10, a first check valve 14 provided in the first hydraulic fluid flow passage 8, a second check valve 15 provided in the second hydraulic fluid flow passage 9, and the first 1 is provided with a relief passage 16 in which a relief valve 17 is provided in the middle of communication between one hydraulic fluid passage 8 and the second hydraulic fluid passage 9.

ここで、前記第１の逆止弁１４及び前記リリーフ通路１６は、この種の液圧装置に用いられるものとして広く知られているものと同様の構成を有する。   Here, the first check valve 14 and the relief passage 16 have the same configuration as that widely used for this type of hydraulic device.

一方、前記第２の逆止弁１５は、前記第２の作動液流通路９中に設けてなる弁座１９、この弁座１９に着座することにより作動液の流通を禁止する弁体２０、及びこの弁体２０を弁座１９に着座する方向に付勢する付勢手段たるばね２１を備えた逆止弁本体１８と、前記操作レバー６が前記中立位置Ｃと前記下降位置Ｄとの間での回転操作を受ける際の操作力の伝達を受けて前記筐体１０に対して螺進退することにより前記ばね２１の付勢力に反して前記弁体２０を前記弁座１９から離間する方向に駆動することが可能な調節ねじ２２と、この調節ねじ２２と前記筐体１０との間に設けられ該調節ねじ２２と一体的に回動可能であるとともに前記調節ねじ２２の基端部を内部に収納してなる調節ねじ取付部材２３と、前記操作レバー６を中立位置Ｃに配した際の前記調節ねじ２２の前記調節ねじ取付部材２３に対する相対位置を固定すべく調節ねじ２２に該調節ねじ２２の進退方向と異なる方向に作用を与え前記調節ねじ取付部材２３に圧着させるための固定部材２４とを備えている。ここで、前記操作レバー６が前記下降位置Ｄに移動し、前記弁体２０が前記弁座１９から離間した際には、これら弁体２０と弁座１９との間の空間が、アクチュエータからタンク１に戻る作動液の流量を制御する絞り２５として機能する。   On the other hand, the second check valve 15 includes a valve seat 19 provided in the second hydraulic fluid passage 9, a valve body 20 that prohibits the flow of hydraulic fluid by being seated on the valve seat 19, And a check valve body 18 provided with a spring 21 as an urging means for urging the valve body 20 in the direction of seating on the valve seat 19, and the operation lever 6 between the neutral position C and the lowered position D. The valve body 20 is moved away from the valve seat 19 against the urging force of the spring 21 by receiving the transmission of the operation force at the time of receiving the rotation operation at the position and screwing back and forth with respect to the housing 10. An adjustment screw 22 that can be driven, and is provided between the adjustment screw 22 and the housing 10 so as to be rotatable integrally with the adjustment screw 22, and a base end portion of the adjustment screw 22 is provided inside. The adjustment screw mounting member 23 housed in the housing and the operation lever 6 are neutral. In order to fix the relative position of the adjusting screw 22 with respect to the adjusting screw mounting member 23 when arranged in the position C, the adjusting screw 22 is acted in a direction different from the advancing / retreating direction of the adjusting screw 22 to the adjusting screw mounting member 23. And a fixing member 24 for crimping. Here, when the operating lever 6 moves to the lowered position D and the valve body 20 is separated from the valve seat 19, the space between the valve body 20 and the valve seat 19 is changed from the actuator to the tank. It functions as a throttle 25 for controlling the flow rate of the hydraulic fluid returning to 1.

さらに詳述すると、前記調節ねじ２２は、前記操作レバー６を中立位置Ｃに配した状態において、その先端部と前記弁座１９に着座した状態の前記弁体２０との間にわずかな隙間が存在するか、或いはその先端部と前記弁座１９に着座した状態の前記弁体２０とが接触しているような位置に配している。この調節ねじ２２の基端部には、前記調節ねじ取付部材２３との間で螺進退させるための雄ねじ部２２ａを設けている。そして、この調節ねじ２２の基端には、マイナスドライバーなどの治具を受け付けるための操作受付部２２ｘを設けている。   More specifically, the adjustment screw 22 has a slight gap between its tip and the valve body 20 seated on the valve seat 19 in a state where the operation lever 6 is disposed at the neutral position C. It exists, or it has distribute | arranged to the position where the front-end | tip part and the said valve body 20 of the state seated on the said valve seat 19 are contacting. A male screw portion 22 a is provided at the base end portion of the adjusting screw 22 so as to advance and retract with respect to the adjusting screw mounting member 23. An operation receiving portion 22x for receiving a jig such as a minus screwdriver is provided at the base end of the adjusting screw 22.

前記調節ねじ取付部材２３は、その先端部の外周に雄ねじ部２３ａを有し前記筐体１０に設けた雌ねじ孔１０ｘに螺合可能である。また、その内部において前記調節ねじ２２が進退可能な調節ねじ収納孔２３ｘを有する。さらに、この調節ねじ収納孔２３ｘと連通するとともに前記調節ねじ２２の雄ねじ部２２ａと螺合可能な雌ねじ孔２３ｙをも有する。加えて、その基端部にはナットＮを介して前記操作レバー６を取り付け可能であるとともに、この調節ねじ取付部材２３を筐体１０に螺着させる操作を受け付けるための六角レンチ等の軸を受け入れる治具受入部２３ｚを設けている。そして、前記調節ねじ収納孔２３ｘに連通しこの調節ねじ収納孔２３ｘの径方向すなわち調節ねじ２２の進退方向に直交する方向に延伸する雌ねじ孔である固定部材取付ねじ孔２３ｎを備えている。   The adjustment screw mounting member 23 has a male screw portion 23 a on the outer periphery of the tip portion thereof, and can be screwed into a female screw hole 10 x provided in the housing 10. In addition, an adjustment screw housing hole 23x in which the adjustment screw 22 can advance and retract is provided. Furthermore, it has a female screw hole 23y that communicates with the adjusting screw storage hole 23x and can be screwed into the male screw portion 22a of the adjusting screw 22. In addition, the operation lever 6 can be attached to the base end portion via a nut N, and a shaft such as a hexagon wrench for receiving an operation for screwing the adjusting screw attachment member 23 to the housing 10 is provided. A receiving jig receiving portion 23z is provided. A fixing member mounting screw hole 23n, which is a female screw hole that communicates with the adjustment screw storage hole 23x and extends in a direction perpendicular to the radial direction of the adjustment screw storage hole 23x, that is, the advancing and retreating direction of the adjustment screw 22, is provided.

前記固定部材２４は、前記調節ねじ取付部材２３の固定部材取付ねじ孔２３ｎに螺合可能な雄ねじ部材であり、前記調節ねじ取付部材２３内に前記調節ねじ２２を挿入した状態でこの固定部材２４を前記固定部材取付ねじ孔２３ｎに螺着することにより、前記調節ねじ２２が前記調節ねじ収納孔２３ｘの径方向に向かう作用を受け、前記調節ねじ取付部材２３に圧着される。   The fixing member 24 is a male screw member that can be screwed into the fixing member attaching screw hole 23n of the adjusting screw attaching member 23, and the fixing member 24 is inserted in the adjusting screw attaching member 23. Is screwed into the fixing member mounting screw hole 23n, so that the adjusting screw 22 is subjected to an action in the radial direction of the adjusting screw housing hole 23x, and is crimped to the adjusting screw mounting member 23.

筐体１０への調節ねじ２２、調節ねじ取付部材２３及び操作レバー６の取り付けは、例えば以下のような手順で行われる。   The adjustment screw 22, the adjustment screw attachment member 23, and the operation lever 6 are attached to the housing 10 in the following procedure, for example.

まず、前記調節ねじ２２を前記調節ねじ取付部材２３の内部に挿入し、この調節ねじ２２の雄ねじ部２２ａを調節ねじ取付部材２３の雌ねじ孔２３ｙに螺着する。次いで、この調節ねじ取付部材２３を、内部に調節ねじ２２を収納した状態のまま筐体１０に設けた雌ねじ孔１０ｘに螺着する。それから、この調節ねじ取付部材２３の基端部に、中立位置Ｃに配した操作レバー６をナットＮを介して取り付ける。そして、前記調節ねじ２２が前記操作レバー６を中立位置Ｃに配した際にとるべき位置となるようにこの調節ねじ２２を前記調節ねじ取付部材２３に対して螺進退させ、前記固定部材２４を介して該調節ねじ取付部材２３に圧着させる。   First, the adjusting screw 22 is inserted into the adjusting screw mounting member 23, and the male screw portion 22 a of the adjusting screw 22 is screwed into the female screw hole 23 y of the adjusting screw mounting member 23. Next, the adjusting screw mounting member 23 is screwed into the female screw hole 10x provided in the housing 10 with the adjusting screw 22 housed inside. Then, the operation lever 6 disposed at the neutral position C is attached to the base end portion of the adjustment screw attachment member 23 via the nut N. Then, the adjusting screw 22 is screwed back and forth with respect to the adjusting screw mounting member 23 so that the adjusting screw 22 is positioned when the operation lever 6 is arranged at the neutral position C, and the fixing member 24 is moved. To the adjusting screw mounting member 23.

以上に述べたように、前記操作レバー６は前記調節ねじ２２ではなく前記調節ねじ取付部材２３に取り付けられるので、この操作レバー６を前記調節ねじ取付部材２３に取り付ける際に該調節ねじ取付部材２３が回転し前記筐体１０に対して螺進退した場合であっても、前記調節ねじ２２と該調節ねじ取付部材２３との相対位置を調節して前記操作レバー６を中立位置Ｃに配した際にとるべき位置に前記調節ねじ２２を配した後、固定部材２４を介して該調節ねじ２２を前記調節ねじ取付部材２３に圧着すれば、この圧着操作の際には前記調節ねじ２２は進退方向への作用を受けず、従って操作レバー６を中立位置Ｃに配した際の調節ねじ２２の筐体１０に対する相対位置を確実に決定できる。   As described above, the operation lever 6 is attached to the adjustment screw attachment member 23 instead of the adjustment screw 22, so that the adjustment screw attachment member 23 is attached when the operation lever 6 is attached to the adjustment screw attachment member 23. Even when the control lever 6 is rotated and retracted relative to the housing 10, the relative position between the adjustment screw 22 and the adjustment screw mounting member 23 is adjusted and the operation lever 6 is disposed at the neutral position C. After the adjustment screw 22 is arranged at a position to be taken, the adjustment screw 22 is crimped to the adjustment screw mounting member 23 via the fixing member 24. When the crimping operation is performed, the adjustment screw 22 is moved forward and backward. Therefore, the relative position of the adjusting screw 22 with respect to the housing 10 when the operation lever 6 is arranged at the neutral position C can be determined with certainty.

なお、本考案は以上に詳述した実施形態に限られるものではない。   The present invention is not limited to the embodiment described in detail above.

例えば、上述した実施形態では、ねじ固定部材は調節ねじの進退方向と直交する方向に進退する雄ねじ部材であるが、進退方向が調節ねじの進退方向と異なるものであれば、ねじ固定部材による調節ねじの固定の際には締付力のうち進退方向成分のみが調節ねじを進退させるべく作用するので、本発明の作用効果をある程度得ることができる。但し、ねじ固定部材が調節ねじの進退方向と直交する方向に進退するものであれば締着力のうち進退方向成分は０であるので、上述した実施形態のように、ねじ固定部材が調節ねじ取付部材の進退方向と直交する方向に進退するものが最も好ましい。   For example, in the above-described embodiment, the screw fixing member is a male screw member that advances and retreats in a direction orthogonal to the advancing and retreating direction of the adjustment screw. However, if the advancing and retreating direction is different from the advancing and retreating direction of the adjustment screw, the adjustment by the screw fixing member is performed. When the screw is fixed, only the advancing / retreating direction component of the tightening force acts to advance and retract the adjusting screw, so that the effects of the present invention can be obtained to some extent. However, if the screw fixing member advances and retreats in a direction perpendicular to the advancing / retreating direction of the adjusting screw, the advancing / retreating direction component of the fastening force is 0, so that the screw fixing member is attached to the adjusting screw as in the above-described embodiment. It is most preferable to advance or retreat in a direction orthogonal to the advancing and retreating direction of the member.

また、雄ねじ部材以外を利用してねじ固定部材を形成してもよい。例えば、一部が切り欠かれた円弧状をなし弾性部材により形成した線状体、又は側面視一部が切り欠かれた半円弧状をなし弾性部材により形成した板体の切り欠き端に中心方向に向けて延伸する突起を設けてなるねじ固定部材を用意し、調節ねじ取付部材に設けたねじ固定部材挿通孔にこのねじ固定部材の突起を挿通させた上でこのねじ固定部材をねじ固定部材挿通孔に抱着させることによりねじ固定部材の突起と調節ねじ取付部材とにより調節ねじを挟持した状態とすることで、この調節ねじを調節ねじ取付部材に圧着させるようにしてもよい。   Further, the screw fixing member may be formed using a member other than the male screw member. For example, a linear body formed by an elastic member having a partially cut arc shape, or a semicircular arc shape having a partially cutaway side view and centered on a notched end of a plate body formed by an elastic member. Prepare a screw fixing member with a protrusion extending in the direction, and insert the screw fixing member protrusion into the screw fixing member insertion hole provided in the adjustment screw mounting member, and then fix the screw fixing member with the screw. The adjusting screw may be crimped to the adjusting screw mounting member by holding the adjusting screw between the protrusion of the screw fixing member and the adjusting screw mounting member by being attached to the member insertion hole.

その他、荷役装置に用いられるアクチュエータ以外の駆動対象物に作動液を供給する液圧装置に本考案を採用する等、本考案の趣旨を逸脱しない範囲で種々変形が可能である。   In addition, various modifications can be made without departing from the spirit of the present invention, such as adopting the present invention in a hydraulic device that supplies hydraulic fluid to a driving object other than an actuator used in a cargo handling device.

６…操作レバー
９…（第２の）作動液流通路
１０…筐体
１１…出力ポート
１５…（第２の）逆止弁
１９…弁体
２０…弁座
２２…調節ねじ
２３…調節ねじ取付部材
２４…固定部材 DESCRIPTION OF SYMBOLS 6 ... Operation lever 9 ... (2nd) hydraulic fluid flow path 10 ... Housing 11 ... Output port 15 ... (Second) check valve 19 ... Valve body 20 ... Valve seat 22 ... Adjustment screw 23 ... Installation of adjustment screw Member 24 ... Fixed member

Claims (2)

駆動対象物に接続してなる出力ポート、及びこの出力ポートに連通し前記駆動対象物との間で作動液を出し入れするための作動液流通路を有する筐体と、
この筐体の作動液流通路中に設けられ弁体が弁座に着座することにより作動液の流通を禁止する逆止弁と、
筐体に対して螺進退することによりこの逆止弁の弁体を弁座から離間する方向に駆動することが可能な調節ねじと、
この調節ねじをネジ送り動作させるべく該調節ねじに接続され少なくとも中立位置と開弁位置との間を回転移動可能であるとともに、回転操作力を受け付けて前記調節ねじに伝達する操作レバーと、
この調節ねじと前記筐体との間に設けられ該調節ねじと一体的に回動可能であるとともにこの調節ねじの基端部を内部に収納してなる調節ねじ取付部材と、
前記操作レバーを中立位置に配した際の前記調節ねじの前記調節ねじ取付部材に対する相対位置を固定すべく調節ねじに該調節ねじの進退方向と異なる方向に作用を与え、該調節ねじを前記調節ねじ取付部材に圧着させるための固定部材と
を備えていることを特徴とする液圧装置。 An output port connected to the driving object, and a housing having a working fluid flow passage for communicating with the driving object and for taking in and out the working fluid from the driving object;
A check valve that is provided in the hydraulic fluid flow passage of the housing and prohibits the flow of the hydraulic fluid by the valve body seated on the valve seat;
An adjustment screw capable of driving the valve body of the check valve away from the valve seat by reciprocating with respect to the housing;
An operation lever connected to the adjustment screw to rotate the adjustment screw and capable of rotating between at least a neutral position and a valve opening position, and receiving a rotational operation force and transmitting the rotation operation force to the adjustment screw;
An adjustment screw mounting member which is provided between the adjustment screw and the casing and is rotatable integrally with the adjustment screw and which houses the base end portion of the adjustment screw;
In order to fix the relative position of the adjustment screw with respect to the adjustment screw mounting member when the operation lever is disposed at the neutral position, the adjustment screw is acted in a direction different from the advancing and retreating direction of the adjustment screw, and the adjustment screw is adjusted to the adjustment screw. A hydraulic device, comprising: a fixing member for pressing the screw mounting member. 前記ねじ固定部材が前記調節ねじに与える作用の方向が、該調節ねじの進退方向と直交する方向である請求項１記載の液圧装置。 The hydraulic device according to claim 1, wherein the direction of the action of the screw fixing member on the adjusting screw is a direction orthogonal to the advancing / retreating direction of the adjusting screw.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104595553A (en) * 2014-11-27 2015-05-06 太原理工大学 Counting manual electric hydraulic control sluice valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104595553A (en) * 2014-11-27 2015-05-06 太原理工大学 Counting manual electric hydraulic control sluice valve

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