JP2005120680A - Device for regulating load on front wheel of snow-removing vehicle - Google Patents

Device for regulating load on front wheel of snow-removing vehicle Download PDF

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JP2005120680A
JP2005120680A JP2003356244A JP2003356244A JP2005120680A JP 2005120680 A JP2005120680 A JP 2005120680A JP 2003356244 A JP2003356244 A JP 2003356244A JP 2003356244 A JP2003356244 A JP 2003356244A JP 2005120680 A JP2005120680 A JP 2005120680A
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snow removal
snow
front wheel
removal device
load
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JP4094520B2 (en
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Takeshi Horikawa
堀川　　剛
Kozo Saito
晃造 斎藤
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KYOWA KIKAI SEISAKUSHO KK
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KYOWA KIKAI SEISAKUSHO KK
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Abstract

<P>PROBLEM TO BE SOLVED: To overcome the problem that costs are increased due to the manufacturing of a movable carriage and a sliding part of a counterweight and the installation of a hydraulic cylinder and a fluid pressure switching valve, though the counterweight arranged in the backmost section of the snow-removing vehicle is moved in the direction of a front wheel so that a load on the front wheel can be increased to a certain degree for the securement of driveability, because the driveability is deteriorated by a side force imposed on snow-removing equipment, on account of the reduction of a load, equivalent to the weight of the snow-removing equipment, from the load on the front wheel due to the descent and ground contact of the snow-removing equipment in snow-removing work. <P>SOLUTION: A proportional electromagnetic relief valve 2 and an electromagnetic check valve are provided in a circuit of the hydraulic cylinder 1 for the ascent/descent of the snow-removing equipment B; an electromagnetic switching valve is switched to an ascent side after the snow-removing equipment comes into contact with a road surface, so that a force for lifting the snow-removing equipment can be regulated by the action of the relief valve 2 and the electromagnetic check valve; and the most of the weight is imposed on the front wheel C, so that the load on the front wheel can be increased for the securement of the driveability. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

除雪車両（除雪トラック、除雪ドーザ、除雪グレーダ等）の前方に配設されている除雪装置（スノープラウ、スノーブラシ等）は回送時に上昇させるため、該除雪装置の重量の全てが前輪に対してのモーメント分も含めて前輪にかかり前輪荷重が増大されるが、除雪作業時には除雪装置を下降させ路面に接地させるため、この増大分が前輪荷重に対して減少となり、回送時に比較すると著しく前輪荷重が減少した状態となり、この状態では除雪中に発生するサイドフォースに対する抗力が減少し操縦安定性が悪くなる。
したがって、本発明は、サイドフォースに対する操縦安定性を向上させるため、比例電磁リリーフ弁及び第１電磁チェック弁と第２電磁チェック弁を具備し、各々の調節作用により除雪装置の重量の大部分を除雪車両の前輪にかけ、前輪荷重を増大させた状態で除雪作業を実施し操縦安定性の向上を図っている除雪車両の前輪荷重調節装置を提供するものである。 Since snow removal devices (snow plows, snow brushes, etc.) placed in front of snow removal vehicles (snow removal trucks, snow removal dozers, snow removal graders, etc.) are raised during transport, all of the weight of the snow removal device is relative to the front wheels. The front wheel load is increased including the moment of moment, but the front wheel load is increased, but during the snow removal work, the snow removal device is lowered and brought into contact with the road surface, so this increase is reduced with respect to the front wheel load. In this state, the drag force against the side force generated during snow removal is reduced and the steering stability is deteriorated.
Therefore, the present invention includes a proportional electromagnetic relief valve, a first electromagnetic check valve, and a second electromagnetic check valve in order to improve steering stability against side force, and a large part of the weight of the snow removal device is adjusted by each adjusting action. Provided is a front wheel load adjustment device for a snow removal vehicle which is applied to the front wheels of the snow removal vehicle and performs snow removal work with the front wheel load increased to improve steering stability.

従来、この種のものにあっては下記のようになっている。
車両の前方に配設されている除雪装置は回送時には上昇させるため、該除雪装置の重量の全てが前輪に対してのモーメントも含めて前輪にかかり前輪荷重が増大され、除雪作業時には除雪装置を下降し路面に接地させるため、除雪装置の重量分が減少するので除雪作業時には前輪荷重が減少する。したがって、除雪装置にかかるサイドフォースに対して操縦安定性はその分悪くなる。
そのため、実開昭５５−４１９８号公報（特許文献１）、実開昭６０−３６４１２号公報（特許文献２）、実開平２−６６８２２号公報（特許文献３）の各々に開示されているように、除雪作業時にはスノープラウを下降し接地させるため前輪荷重が減少する。そのため、カウンターウエイトを前輪方向へ移動し前輪荷重を或程度増大し操縦安定性を図っているものである。 Conventionally, this type is as follows.
Since the snow removal device installed in front of the vehicle is raised when it is transported, all of the weight of the snow removal device is applied to the front wheels, including the moment with respect to the front wheels, and the front wheel load is increased. Since the weight of the snow removal device decreases because it descends and contacts the road surface, the front wheel load decreases during snow removal work. Accordingly, the steering stability is deteriorated correspondingly to the side force applied to the snow removal device.
Therefore, it is disclosed in Japanese Utility Model Laid-Open No. 55-4198 (Patent Document 1), Japanese Utility Model Laid-Open No. 60-36412 (Patent Document 2), Japanese Utility Model Laid-Open No. 2-66822 (Patent Document 3). In addition, the front wheel load decreases because the snow plow is lowered and brought into contact with the ground during snow removal. For this reason, the counterweight is moved in the direction of the front wheels to increase the front wheel load to some extent, thereby achieving steering stability.

実開昭５５−４１９８号公報Japanese Utility Model Publication No.55-4198 実開昭６０−３６４１２号公報Japanese Utility Model Publication No. 60-36412 実開平２−６６８２２号公報Japanese Utility Model Publication 2-66822

従来の技術で述べたものにあっては、下記のような問題点を有していた。
従来車両の前方に配設されている除雪装置は、除雪作業状態及び回送状態とするため、油圧シリンダの伸縮により昇降作動する。回送状態では除雪装置を上昇させるため、該除雪装置の重量の全てが前輪に対してのモーメント分も含めて前輪にかかり前輪荷重が増大される。
また、除雪作業時には除雪装置が路面に完全に接地するまで下降させるため、該除雪装置の重量分が前輪荷重より減少となる。除雪作業において、スノープラウあるいはスノーブラシによる除雪作業は全てサイドフォースが発生するものであるが、該サイドフォースに対しては前輪荷重が大きいほど操縦安定性に有利であるため、車両の最後部に配設しているカウンターウエイトの前輪方向への移動により前輪荷重増大の調節を行っているものである。
カウンターウエイトの移動は、油圧シリンダの伸縮作動によりカウンターウエイトの移動台上の摺動部を前後方向へ移動するものであり、回送状態では車両の最後部に位置するカウンターウエイトを、スノープラウあるいはスノーブラシを下降し接地させた作業状態では前輪方向へ移動して前輪荷重を増大するものであるため、カウンターウエイトの移動のための移動台と摺動部の製作及び油圧シリンダと流体圧切換弁を設置する等重量増及び費用増となるものである。
また、カウンターウエイトを最後部に固定式としているものは、前輪荷重は減少のままであるため、サイドフォースに対する操縦性の不安定のまま除雪作業を実施していることになる。 Those described in the prior art have the following problems.
Conventionally, a snow removal device disposed in front of a vehicle moves up and down by extending and contracting a hydraulic cylinder in order to bring it into a snow removal work state and a forwarding state. Since the snow removal device is raised in the forwarding state, all of the weight of the snow removal device is applied to the front wheel including the moment with respect to the front wheel, and the front wheel load is increased.
Further, since the snow removal device is lowered until it completely contacts the road surface during snow removal work, the weight of the snow removal device is reduced from the front wheel load. In snow removal work, all snow removal work with a snow plow or snowbrush generates side forces, but for these side forces, the larger the front wheel load, the better the steering stability. The increase in the front wheel load is adjusted by the movement of the counterweight arranged in the front wheel direction.
The movement of the counterweight moves the sliding portion on the counterweight moving table in the front-rear direction by the expansion and contraction of the hydraulic cylinder. In the forward state, the counterweight located at the rearmost part of the vehicle is moved to the snow plow or the snow. In the work state in which the brush is lowered and grounded, it moves in the direction of the front wheel and increases the load on the front wheel. Therefore, the moving base and the sliding part for the movement of the counterweight are manufactured, and the hydraulic cylinder and the fluid pressure switching valve are Installation will increase weight and cost.
Further, in the case where the counterweight is fixed at the rearmost part, the load on the front wheel remains reduced, so that the snow removal work is carried out while the controllability to the side force is unstable.

本発明は、従来の技術の有するこのような問題点に鑑みなされたものであり、その目的とするところは、上述の問題点を解決できるものを提供しようとするものである。   The present invention has been made in view of such problems of the prior art, and an object of the present invention is to provide an apparatus capable of solving the above-described problems.

上記目的を達成するために、本発明は下記のようになっているものである。
除雪作業時にも前輪Ｃに除雪装置Ｂの重量分の荷重がかけられるように、除雪装置Ｂを昇降させる油圧シリンダ１のヘッドカバ側と油圧タンク７の中間油圧回路内に比例電磁リリーフ弁２を具備し、該比例電磁リリーフ弁２と油圧シリンダ１のヘッドカバ側の中間油圧回路内には第１電磁チェック弁３と第２電磁チェック弁４を具備し、除雪作業時には除雪装置Ｂを下降し路面に接地させた後に電磁切換弁５を上昇側に切換え、コントローラ８の電気信号を基にした比例電磁リリーフ弁２の油圧調節により除雪装置Ｂに対して持上げ力を調節することで、該除雪装置Ｂの重量の大部分を除雪車両Ａの前輪Ｃにかけ、前輪荷重を増大させた状態で除雪作業の実施を可能とするため、除雪作業で発生するサイドフォースに対する抗力を増大させ操縦安定性を向上させるよう構成されている。 In order to achieve the above object, the present invention is as follows.
A proportional electromagnetic relief valve 2 is provided on the head cover side of the hydraulic cylinder 1 for raising and lowering the snow removal device B and in the intermediate hydraulic circuit of the hydraulic tank 7 so that the load corresponding to the weight of the snow removal device B is applied to the front wheel C even during snow removal work. An intermediate hydraulic circuit on the head cover side of the proportional electromagnetic relief valve 2 and the hydraulic cylinder 1 is provided with a first electromagnetic check valve 3 and a second electromagnetic check valve 4. After the grounding, the electromagnetic switching valve 5 is switched to the ascending side, and the lifting force is adjusted with respect to the snow removal device B by adjusting the hydraulic pressure of the proportional electromagnetic relief valve 2 based on the electric signal of the controller 8. Is applied to the front wheel C of the snow removal vehicle A, and the snow removal work can be performed with the front wheel load increased. Therefore, the resistance against the side force generated in the snow removal work is increased and the operation is performed. It is configured to improve the stability.

本発明は、上述の通り構成されているので次に記載する効果を奏する。
１．回送時と除雪作業時に前輪荷重の増減量が少なくなり、除雪作業時のサイドフォースに対する抗力が増大し操縦安定性が向上するため、高速除雪が可能となる。
２．除雪装置Ｂの持上げ力調節により、該除雪装置Ｂの路面への接地力が低下するため、該除雪装置Ｂの切刃及び橇、又はキャスターホイールが路面に強く接触しないため、該切刃及び橇、又はキャスターホイールの摩耗が減少し消耗品の延命に効を奏する。
３．カウンターウエイトの移動装置機構が不要となり、装置重量も軽減されるなどコストダウンが可能となる。
４．空港向け大形スノープラウなど重量の大きいものほど効果が顕著である。 Since this invention is comprised as mentioned above, there exists an effect described below.
1. The amount of increase / decrease in the front wheel load during forwarding and snow removal work is reduced, the resistance against side forces during snow removal work is increased, and steering stability is improved, so that high-speed snow removal is possible.
2. Since the ground contact force to the road surface of the snow removal device B is reduced by adjusting the lifting force of the snow removal device B, the cutting blade and scissors of the snow removal device B or the caster wheel do not come into strong contact with the road surface. Or, the wear of the caster wheel is reduced and the life of the consumables is prolonged.
3. A counterweight moving device mechanism is not required, and the weight of the device is reduced, thereby reducing costs.
4). Larger weights such as large snow plows for airports are more effective.

以下、本発明の実施の形態を実施例にもとづき図面を参照して説明する。
除雪車両Ａの前方に配設されている除雪装置Ｂを回送状態及び作業状態にするため油圧シリンダ１の伸縮作動により除雪装置Ｂを昇降させるものであるが、除雪作業状態とするため除雪装置Ｂを下降接地させることにより、該除雪装置Ｂの重量の大部分が除雪車両Ａの前輪荷重より減少する。
したがって、作業時に発生するサイドフォースに対する抗力が減少し操縦安定性が悪くなる。
そこで本発明は、除雪装置Ｂを昇降させる油圧シリンダ１のヘッドカバ側の油圧回路内に比例電磁リリーフ弁２を具備し、該比例電磁リリーフ弁２と油圧シリンダ１の中間回路内に第１電磁チェック弁３と第２電磁チェック弁４を具備し、除雪作業時に除雪装置Ｂを下降接地させた後に電磁切換弁５を上昇側に切換え、コントローラ８の電気信号を基にした比例電磁リリーフ弁２の油圧調節により除雪装置Ｂの持上げ力を調節することで、該除雪装置Ｂの重量の大部分を除雪車両Ａの前輪Ｃにかけ前輪荷重を増大させた状態で除雪作業の実施を可能とするため、除雪作業で発生するサイドフォースに対する抗力を増大させ操縦安定性を向上させるものである。 Hereinafter, embodiments of the present invention will be described based on examples with reference to the drawings.
The snow removal device B disposed in front of the snow removal vehicle A is moved up and down by the expansion and contraction operation of the hydraulic cylinder 1 in order to put the snow removal device B in the forwarding state and the working state. As a result, the most part of the weight of the snow removal device B is reduced from the front wheel load of the snow removal vehicle A.
Accordingly, the drag force against the side force generated during the work is reduced, and the steering stability is deteriorated.
Therefore, the present invention includes a proportional electromagnetic relief valve 2 in the hydraulic circuit on the head cover side of the hydraulic cylinder 1 that raises and lowers the snow removal device B, and a first electromagnetic check in an intermediate circuit between the proportional electromagnetic relief valve 2 and the hydraulic cylinder 1. Of the proportional electromagnetic relief valve 2 based on the electric signal of the controller 8 having the valve 3 and the second electromagnetic check valve 4 and switching the electromagnetic switching valve 5 to the upward side after the snow removal device B is lowered and grounded during the snow removal operation. By adjusting the lifting force of the snow removal device B by adjusting the hydraulic pressure, it is possible to carry out the snow removal work with the front wheel C of the snow removal vehicle A being subjected to the majority of the weight of the snow removal device B and the front wheel load being increased. It increases the resistance against side forces generated during snow removal work and improves handling stability.

図１は、除雪装置の除雪作業状態を示した油圧回路図である。
これを参照して、除雪車両Ａのエンジンにより駆動されている油圧ポンプ６より発生した油圧を電磁切換弁５の切換操作により油圧シリンダ１のヘッドカバ側に供給し、該油圧シリンダ１を伸長させる作用を示す。
つまり、除雪装置Ｂを上昇させるもので、同時に第２電磁チェック弁４はオープンポジションに切換えし、また、第１電磁チェック弁３はノーマルオープンのため切換操作は不要である。
同油圧回路内に具備されている比例電磁リリーフ弁２はコントローラ８からの電気信号を基に油圧を適宜に油圧タンク７に逃がして除雪装置Ｂの持上げ力の力量調節を実施し、除雪装置Ｂが路面より浮上する直前の状態で該除雪装置Ｂ重量の大部分を除雪車両Ａの前輪Ｃにかけ、前輪荷重を増大した状態で除雪作業を実施する作用を示している。 FIG. 1 is a hydraulic circuit diagram showing a snow removal work state of the snow removal device.
Referring to this, the hydraulic pressure generated from the hydraulic pump 6 driven by the engine of the snow removal vehicle A is supplied to the head cover side of the hydraulic cylinder 1 by the switching operation of the electromagnetic switching valve 5, and the hydraulic cylinder 1 is extended. Indicates.
That is, the snow removal device B is raised, and at the same time, the second electromagnetic check valve 4 is switched to the open position, and the first electromagnetic check valve 3 is normally open, so that no switching operation is required.
The proportional electromagnetic relief valve 2 provided in the hydraulic circuit appropriately releases the hydraulic pressure to the hydraulic tank 7 on the basis of an electric signal from the controller 8 to adjust the lifting force of the snow removal device B, and the snow removal device B This shows the action of applying a large part of the weight of the snow removal device B to the front wheel C of the snow removal vehicle A in a state immediately before rising from the road surface, and performing the snow removal work with the front wheel load increased.

図２は、回送状態から除雪作業状態に除雪装置Ｂを下降させる状態を示した油圧回路図である。
これを参照して、油圧ポンプ６より発生した油圧を電磁切換弁５の切換操作により油圧シリンダ１のピストンロッド側に供給し、該油圧シリンダ１を短縮させ除雪装置Ｂを下降させるもので、比例電磁リリーフ弁２及び第１電磁チェック弁３と第２電磁チェック弁４は図１の作業状態と同一作用を示している。 FIG. 2 is a hydraulic circuit diagram showing a state where the snow removal device B is lowered from the forwarding state to the snow removal work state.
Referring to this, the hydraulic pressure generated from the hydraulic pump 6 is supplied to the piston rod side of the hydraulic cylinder 1 by the switching operation of the electromagnetic switching valve 5, the hydraulic cylinder 1 is shortened and the snow removal device B is lowered. The electromagnetic relief valve 2, the first electromagnetic check valve 3, and the second electromagnetic check valve 4 have the same action as the working state of FIG.

図３は、除雪作業状態から回送状態に除雪装置Ｂを上昇させる状態を示した油圧回路図である。
これを参照して、油圧ポンプ６より発生した油圧を電磁切換弁５の切換操作により油圧シリンダ１のヘッドカバ側に供給し、該油圧シリンダ１を伸長させ除雪装置Ｂを上昇させるものであり、同時に第１電磁チェック弁３をチェックポジションに切換えし油圧の逃げを遮断している作用を示している。 FIG. 3 is a hydraulic circuit diagram showing a state in which the snow removal device B is raised from the snow removal work state to the forwarding state.
Referring to this, the hydraulic pressure generated from the hydraulic pump 6 is supplied to the head cover side of the hydraulic cylinder 1 by the switching operation of the electromagnetic switching valve 5, and the hydraulic cylinder 1 is extended to raise the snow removal device B. This shows the action of switching the first electromagnetic check valve 3 to the check position and blocking the escape of hydraulic pressure.

図４は、除雪作業状態から回送状態に除雪装置Ｂを上昇させる状態を示した油圧回路図である。
これを参照して、除雪装置Ｂの上昇後に自然降下防止のため第２電磁チェック弁４をチェックポジションに切換え、油圧シリンダ１よりの油圧の逃げを遮断し、油圧ポンプ６より発生した油圧を電磁切換弁５の切換操作により油圧タンク７へ逃がすと共に、第１電磁チェック弁３のオープンポジションへの切換えと比例電磁リリーフ弁２の油圧調節によるアンロード作用を示している。 FIG. 4 is a hydraulic circuit diagram showing a state where the snow removal device B is raised from the snow removal work state to the forwarding state.
Referring to this, the second electromagnetic check valve 4 is switched to the check position to prevent natural descent after the snow removal device B is lifted, the hydraulic pressure from the hydraulic cylinder 1 is shut off, and the hydraulic pressure generated from the hydraulic pump 6 is electromagnetically In addition to the escape operation to the hydraulic tank 7 by the switching operation of the switching valve 5, the unloading action by switching the first electromagnetic check valve 3 to the open position and adjusting the hydraulic pressure of the proportional electromagnetic relief valve 2 is shown.

除雪装置の除雪作業状態を示した油圧回路図である。It is the hydraulic circuit figure which showed the snow removal work state of the snow removal apparatus. 回送状態から除雪作業状態に除雪装置を下降させる状態を示した油圧回路図である。It is the hydraulic circuit diagram which showed the state which descends a snow removal apparatus from a forwarding state to a snow removal work state. 除雪作業状態から回送状態に除雪装置を上昇させる状態を示した油圧回路図である。It is the hydraulic circuit figure which showed the state which raises a snow removal apparatus from a snow removal work state to a forwarding state. 除雪作業状態から回送状態に除雪装置を上昇させる状態を示した油圧回路図である。It is the hydraulic circuit figure which showed the state which raises a snow removal apparatus from a snow removal work state to a forwarding state. 除雪装置が下降接地した除雪作業状態の側面図である。It is a side view of the snow removal work state where the snow removal apparatus descended and grounded. 除雪装置が上昇した回送状態の側面図である。It is a side view of the forwarding state which the snow removal apparatus raised.

符号の説明Explanation of symbols

Ａ 除雪車両
Ｂ 除雪装置
Ｃ 前輪
１ 油圧シリンダ
２ 比例電磁リリーフ弁
３ 第１電磁チェック弁
４ 第２電磁チェック弁
５ 電磁切換弁
６ 油圧ポンプ
７ 油圧タンク
８ コントローラ A Snow removing vehicle B Snow removing device C Front wheel 1 Hydraulic cylinder 2 Proportional electromagnetic relief valve 3 First electromagnetic check valve 4 Second electromagnetic check valve 5 Electromagnetic switching valve 6 Hydraulic pump 7 Hydraulic tank 8 Controller

Claims (1)

除雪車両（Ａ）の前方に配設されている除雪装置（Ｂ）を除雪作業及び回送のために昇降することにより前輪（Ｃ）にかかる荷重が大きく増減する除雪車両（Ａ）において、除雪作業時にも前輪（Ｃ）に除雪装置（Ｂ）の重量により荷重がかけられるように、除雪装置（Ｂ）を昇降させる油圧シリンダ（１）のヘッドカバ側と油圧タンク（７）の中間油圧回路内に比例電磁リリーフ弁（２）を具備し、該比例電磁リリーフ弁（２）と油圧シリンダ（１）のヘッドカバ側の中間油圧回路内には油圧ポンプ（６）からの電磁切換弁（５）を経由した主回路との合流点を有し、該合流点の比例電磁リリーフ弁（２）側に第１電磁チェック弁（３）を具備し、また、合流点の油圧シリンダ（１）のヘッドカバ側には第２電磁チェック弁（４）を具備し、除雪作業時には除雪装置（Ｂ）を下降し路面に接地させた後に電磁切換弁（５）を上昇側に切換え、コントローラ（８）の電気信号を基にした比例電磁リリーフ弁（２）の油圧調節により除雪装置（Ｂ）に対して持上げ力を調節することで、該除雪装置（Ｂ）の重量の大部分を除雪車両（Ａ）の前輪（Ｃ）にかけ前輪荷重を増大させた状態で除雪作業の実施を可能とするため、除雪作業で発生するサイドフォースに対する抗力を増大させ操縦安定性を向上させるよう構成されていることを特徴とする除雪車両の前輪荷重調節装置。 In the snow removal vehicle (A) in which the load applied to the front wheel (C) is greatly increased or decreased by lifting and lowering the snow removal device (B) disposed in front of the snow removal vehicle (A) for snow removal work and forwarding, the snow removal work In the intermediate hydraulic circuit between the head cover side of the hydraulic cylinder (1) that raises and lowers the snow removal device (B) and the hydraulic tank (7) so that the load is applied to the front wheel (C) by the weight of the snow removal device (B). Proportional electromagnetic relief valve (2) is provided, and in the intermediate hydraulic circuit on the head cover side of the proportional electromagnetic relief valve (2) and hydraulic cylinder (1), an electromagnetic switching valve (5) from a hydraulic pump (6) is routed A first electromagnetic check valve (3) on the proportional electromagnetic relief valve (2) side of the junction, and on the head cover side of the hydraulic cylinder (1) at the junction. Has a second electromagnetic check valve (4) At the time of snow removal work, the snow removal device (B) is lowered and grounded on the road surface, then the electromagnetic switching valve (5) is switched to the upward side, and the hydraulic pressure of the proportional electromagnetic relief valve (2) is adjusted based on the electrical signal of the controller (8). By adjusting the lifting force with respect to the snow removal device (B) by applying a large part of the weight of the snow removal device (B) to the front wheels (C) of the snow removal vehicle (A), the snow removal work is performed with the front wheel load increased. Therefore, the front wheel load adjustment device for a snow removal vehicle is configured to increase a drag force against a side force generated in a snow removal operation and improve a handling stability.
JP2003356244A 2003-10-16 2003-10-16 Adjusting the front wheel load of a snow removal vehicle Expired - Lifetime JP4094520B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009190484A (en) * 2008-02-13 2009-08-27 Yanmar Co Ltd Vibration control device of industrial machine
CN109930531A (en) * 2019-03-29 2019-06-25 重庆进发物业管理有限公司 Water-saving water pistol

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009190484A (en) * 2008-02-13 2009-08-27 Yanmar Co Ltd Vibration control device of industrial machine
CN109930531A (en) * 2019-03-29 2019-06-25 重庆进发物业管理有限公司 Water-saving water pistol

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