TWM241522U - Pressure cylinder device functioned with stroke positioning detection - Google Patents

Pressure cylinder device functioned with stroke positioning detection Download PDF

Info

Publication number
TWM241522U
TWM241522U TW92214353U TW92214353U TWM241522U TW M241522 U TWM241522 U TW M241522U TW 92214353 U TW92214353 U TW 92214353U TW 92214353 U TW92214353 U TW 92214353U TW M241522 U TWM241522 U TW M241522U
Authority
TW
Taiwan
Prior art keywords
pressure
cylinder
throttle valve
chamber
action chamber
Prior art date
Application number
TW92214353U
Other languages
Chinese (zh)
Inventor
Yun-Ching Juang
Original Assignee
Ksp Technologies Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ksp Technologies Corp filed Critical Ksp Technologies Corp
Priority to TW92214353U priority Critical patent/TWM241522U/en
Publication of TWM241522U publication Critical patent/TWM241522U/en

Links

Landscapes

  • Actuator (AREA)

Description

M241522 捌、新型說明: 【新型所屬之技術領域】 本創作係關於一種具行程定位檢知功能之壓知:襞置, 尤指一種藉由檢知壓缸之壓力達到行程定位之具行程定位 檢知功能之壓缸裝置。 【先前技術】 在氣壓與油壓驅動的系統中,壓缸經常被使用作為驅 動原件,請參照第四圖所示,一壓缸(5 〇 )包含有一缸 筒(5 1 )、一活塞(5 2 )與一推桿(5 3 ),該缸筒 (5 1)為中空筒狀體,而活塞(52)則可移動的設置 於缸筒(5 1)中,該推桿(53) —端連接於活塞(5 3)上,另端則由缸筒(5 i ) 一端之通孔穿出該缸筒( 5 1 )以供推抵一負載物。 而現有的具行程定位檢知功能之壓缸裝置中之行程定 位檢知裝置,係包含有一設於該活塞(5 2 )上之環形磁 (521)及兩磁簧開關(54),為了能檢知活塞( 八2 )於缸筒(5 1 )作動之行程,兩磁簧開冑(5 4 ) 刃裝置於缸冑(5 1 )外之適當位置處,兩磁簧開關( 4 )並分別導接於—控制電路(圖中未示),當活塞( )移動至相對於其中_磁簧開關(5 4 ) #相對應位 該磁酱開關(54)會受到磁鐵(521)感應而 ς 控制電路可控制供壓系統使活塞( )續行或停止,達到行程檢知定位的功效。 0479 、而現有的具仃程^位檢知功能之麼紅裝置,仍存 在有下列缺點: 操作不便·針對不同的行程檢知距離,磁簧開關 4)安裝的位置每次皆得需重新安裝調整校對定位, 、簧開關(5 4 )係藉由夾緊鋼片或其他固定 設於缸筒f ς ίu ^ 上,拆解與組裝費時費力。 、η 2、使用裱境限制大··由於磁簧開關(5 4 )會受到 e ^的衫響作動’當機台附近有強大磁場產生時,如電阻 焊叹備’即無法使用此種接近磁簧開關(5 4 ),使現有 的/、仃%疋位檢知功能之壓缸裝置的應用範圍受到很大的 限制。 【新型内容】 有^於此,本創作人為改善上述現有具行程定位檢知 月b之壓缸裝置的缺失,積極投入心力與成本從事研究改 良’遂發展出本創作’以其能徹底改善上述的缺失。 本創作之目的在於藉由檢知壓缸中之壓力值的變化達 到檢知壓缸行程,使具行程定位檢知功能之壓虹裝置操作 與運用更為簡便與廣泛者。 基於上述目的,本創作係包含有一壓缸、一節流閥與 一壓力開關,該壓筒中設有一可於缸體中往覆移動的活塞 ’活塞並將壓缸中區分成兩獨立的作用室,各該作用室並 分別藉由管路連接於一供壓系統,該供壓系統藉由改變第 兩作用室間的壓力差,使活塞能於壓缸中往覆移動,而該 節流閥則設於該壓缸與供壓系統間的管路上,壓力開關則 接設於該壓缸與節流閥間的管路上; M241522 2此,t活塞行程到達一特定位置觸碰一擋止物時, 作用至中壓力會產生變化,藉由壓力開關感知到此一壓力 變化,壓力開關作動送出信號給壓缸的控制單元,使壓缸 中活塞的動作狀態獲得控制或改變,即停止運動、返復運 動或續行運動,達到壓缸行程定位檢知的目的。 本創作可具體達成的功效或功用如下·· 1、 使用方便:壓力開關的壓力設定值調整容易,當 本創作之檢知裝置經初始作動設定後,即可針對不同的行 程與作用室中壓力的改變的關係,設定壓力開關的壓力設 疋值’即可獲得壓缸行程檢知的功用。 2、 不受磁場影響定位功能:壓力開關不會受到磁場 影響動作,因此本創作之適用範圍可較現有的檢知裝置更 為擴大,更廣泛的運用於各式機種設備中。 【實施方式】 本創作係適用於油壓系統或氣壓系統之具行程定位檢 知功能之壓缸裝置,請參照第一與二圖所示,本創作之第 較佳實施例係包含有一壓缸(1 〇 )、一壓力開關(2 0 )與一單向節流閥(3 〇 ),為了方便說明起見,以下 敘述以油壓系統作為說明;該壓缸(1 〇 )係為一單動油 壓缸’其包含有一缸筒(11)、一活塞(12)與一活 塞桿(13),活塞(12)係可反覆移動的裝設於缸筒 (1 1)中’並將缸筒(1 1)區分為一第一'作用室(1 11)與一第二作用室(112),活塞桿(13) —端 固設於活塞(12)上,另端由第二作用室(112)端 M241522 穿設出缸冑(1 1 ),供抵推-負載,如瓶子(4 Ο )。 第一作用室(1 1 1)與第二作用室12)分別 藉由一管路連接於一供壓系統,該供壓系統最基本的形式 係為一供壓泵(6 〇 )與一換向閥(6 i ),換向閥(6 1 )接设於供壓泵(6 0)之輸出,可調節改變藉由供壓 果(60)產生之高壓油於管路中的流向。 第一作用室(1 1 1 )與換向閥(6工)間串接有一 即流間(6 2 ),而第二作用室(丄1 2 )與換向閥(6 1 )間串接有單向節流閥(3 〇 ),再於第二作用室(1 1 2 )與该單向節流閥(3 〇 )間接設有壓力開關(2 〇 )壓力開關(20)主要的功用係將管路迴路中的壓力 信號轉換成電子信號’並傳送給—控制單元,使控制單元 控制換向閥(6 1 )改變高壓油流向或是供壓泵(6 0 ) 的停止與啟動。 如此,使用者只需於初始[initial]作動時設定好壓力 開關(2 0 )的設定壓力值,當供壓泵(6 〇 )啟動,高 壓油經由換向閥(6 1 )調整流向第一作用室(i i工) ’節流閥(6 2 ) #作用可以控制流人第_作用室(丄丄M241522 新型 Description of the new type: [Technical field to which the new type belongs] This creation is about a pressure detection with a stroke positioning detection function: setting, especially a stroke positioning detection with stroke positioning by detecting the pressure of the cylinder Cylinder device with known function. [Prior technology] In the system driven by air pressure and oil pressure, the pressure cylinder is often used as the driving element. Please refer to the fourth figure. A pressure cylinder (50) includes a cylinder (51) and a piston ( 5 2) and a push rod (5 3), the cylinder (5 1) is a hollow cylindrical body, and the piston (52) is movably disposed in the cylinder (5 1), and the push rod (53) The one end is connected to the piston (5 3), and the other end passes out of the cylinder barrel (5 1) through a through hole at one end of the cylinder barrel (5 i) for pushing against a load. The existing stroke positioning detection device in the existing cylinder device with stroke positioning detection function includes a ring magnet (521) and two reed switches (54) provided on the piston (5 2). Check the stroke of the piston (8-2) in the cylinder (5 1). The two magnetic spring openings (5 4) are installed at appropriate positions outside the cylinder 胄 (5 1). The two magnetic spring switches (4) and They are respectively connected to the control circuit (not shown in the figure). When the piston () moves relative to the _ magnetic spring switch (5 4) # corresponding position, the magnetic sauce switch (54) will be induced by the magnet (521) and The control circuit can control the pressure supply system to make the piston () continue or stop, to achieve the effect of stroke detection and positioning. 0479, and the existing red device with distance detection function still has the following shortcomings: inconvenient operation · for different distance detection distance, the reed switch 4) the installation position must be reinstalled every time To adjust the positioning, the spring switch (5 4) is fixed on the cylinder barrel f ί ί ^ by clamping the steel plate or other fixed, disassembly and assembly takes time and effort. , Η 2, the use of mounting borders is limited ... because the reed switch (5 4) will be affected by the shirt sound of e ^ 'when a strong magnetic field is generated near the machine, such as resistance welding excuse me' cannot use this approach The magnetic reed switch (54) makes the application range of the existing cylinder device of the // %% position detection function very limited. [New content] Here, in order to improve the lack of the existing cylinder positioning device with stroke positioning detection month b, the author actively invested in efforts and costs to research and improve 'then developed this creation' to completely improve the above Missing. The purpose of this creation is to make it easier and more extensive to operate and use the pressure rainbow device with stroke positioning detection function by detecting the change in the pressure value in the pressure cylinder. Based on the above purpose, the creation system includes a pressure cylinder, a throttle valve and a pressure switch. The pressure cylinder is provided with a piston 'piston which can be moved in the cylinder body and divides the pressure cylinder into two independent action chambers. Each of the action chambers is connected to a pressure supply system through a pipeline. The pressure supply system changes the pressure difference between the second action chambers so that the piston can move up and down in the pressure cylinder, and the throttle valve is The pressure switch is connected to the pipeline between the pressure cylinder and the pressure supply system, and the pressure switch is connected to the pipeline between the pressure cylinder and the throttle valve. M241522 2 When the piston stroke reaches a specific position and touches a stopper The change to the medium pressure will occur. The pressure switch senses this pressure change. The pressure switch will send a signal to the control unit of the pressure cylinder to control or change the operating state of the piston in the pressure cylinder. Repeat or continuous movement, to achieve the purpose of cylinder stroke positioning detection. The effects or functions that can be achieved in this creation are as follows: 1. Easy to use: The pressure setting value of the pressure switch is easy to adjust. After the initial setting of the detection device of this creation, it can be used for different strokes and pressure in the action chamber. Change the relationship between the pressure setting of the pressure switch of the pressure switch ', you can get the function of cylinder stroke detection. 2. Positioning function not affected by magnetic field: The pressure switch will not be affected by the magnetic field. Therefore, the scope of application of this creation can be expanded compared with existing detection devices, and it can be widely used in various types of equipment. [Embodiment] This creation is a cylinder device with stroke positioning detection function applicable to hydraulic system or pneumatic system. Please refer to the first and second figures. The first preferred embodiment of this creation includes a cylinder. (1 〇), a pressure switch (20) and a one-way throttle valve (3 〇), for the sake of convenience of explanation, the following description will take the hydraulic system as an illustration; the pressure cylinder (1 〇) is a single Hydraulic oil cylinder 'comprises a cylinder barrel (11), a piston (12) and a piston rod (13), the piston (12) is installed in the cylinder barrel (1 1) which can be repeatedly moved' and the cylinder The cylinder (1 1) is divided into a first action chamber (1 11) and a second action chamber (112). The piston rod (13)-one end is fixed on the piston (12), and the other end is formed by the second action chamber. The (112) end M241522 is provided with a cylinder 胄 (1 1) for thrust-load, such as a bottle (4 Ο). The first action chamber (1 1 1) and the second action chamber 12) are connected to a pressure supply system through a pipeline, respectively. The most basic form of the pressure supply system is a pressure supply pump (60) and a replacement. The directional valve (6i) and the directional valve (61) are connected to the output of the pressure supply pump (60), which can adjust and change the flow direction of the high-pressure oil generated by the pressure supply (60) in the pipeline. A first flow chamber (6 2) is connected in series between the first action chamber (1 1 1) and the reversing valve (6 workers), and a second action chamber (丄 1 2) is connected in series with the reversing valve (6 1). There is a one-way throttle valve (30), and the second function chamber (112) is indirectly provided with a pressure switch (20) and a main function of the pressure switch (20). The pressure signal in the pipeline circuit is converted into an electronic signal 'and transmitted to the control unit, so that the control unit controls the directional valve (6 1) to change the high-pressure oil flow or stop and start the pressure supply pump (60). In this way, the user only needs to set the set pressure value of the pressure switch (20) during the initial [initial] operation. When the pressure supply pump (60) is started, the high-pressure oil adjusts the flow direction through the reversing valve (6 1). Action room (II workers) 'throttle valve (6 2) # the role can control the flow of people _ action room (丄 丄

差,活塞(1 2)會朝向第二作用室(工 為平衡此一壓力 1 2 )方向移動 M241522 ,活塞(1 2 )並帶動活塞桿(i 3 )移動。 另一方面,當活塞桿(i 3)移動至觸碰一擋止物時 ,第二作用室(112)中的壓力因擋止物反抗第一作用 室(1 1 1 )的壓力而下降產生壓力變化,觸動壓力開關 (2 0 )作動並送出信號給控制單元使換向閥(6 i )改 變高壓油流向或是供壓泵(6 〇 )的停止與啟動。 由於第二作用室(1 1 2 )的壓力係僅於活塞桿(工 3 )觸碰擋止物時才會產生改變,因此,活塞(士 2 )每 次移動的行程相當於活塞桿(工3)之一端的初始位置與 擂止物的距離,例如實際應用於將瓶子(4 0 )推至一定 位進行封口作業,經由活塞桿(1 3 )之一端推抵瓶子( 4 0 )觸碰至播止物止,活塞(工2 )即停止行進,觀子 (4 〇 )便可進行密封加工等下—程序,達到塵缸(1 〇 )行程檢知的目的。 請參照第三圖所示,本創作之節流閥(62), 使用单向節流閥(3 〇 )取代,使當第一作用室(1 " )茂壓時,高Μ油經由單向節流閥(3 Q )中的單 速流出第_作用崎迅 乐作用至(1 1 1 ),使第一作用室( 能茂壓時更為快速。 再者,該壓力開關(2 0 )亦可組設於第_作用 1 1 )與節流閥(6 2 )間,藉由檢知第一作用 中壓力的變化也可獲得相同的功效;當壓 的形式為雙錢缸時,則可分別於第 )與節流閥(6 2 )及笛-祚田〜, 至(1 1 1 )及第-作用至(112)與單向節流 0483 M241522 閥(3 0 分別接設一個該壓力開關(2 〇 ) 雙向行程定位檢知的功效。 達到 合以上所述,本創作可 能之壓缸裝置所產生的缺失, 且本創作未見於刊物或公開使 件,乃依法具文提出申請。 改進習用具行程定位檢知功 實為一極具進步性之佳作, 用’符合新型專利之申請要Poor, the piston (1 2) will move M241522 towards the direction of the second action chamber (to balance this pressure 1 2), the piston (1 2) will move the piston rod (i 3). On the other hand, when the piston rod (i 3) moves to touch a stopper, the pressure in the second action chamber (112) decreases due to the stopper resisting the pressure of the first action chamber (1 1 1). When the pressure changes, the pressure switch (20) is actuated and a signal is sent to the control unit to cause the reversing valve (6i) to change the high-pressure oil flow or stop and start the pressure pump (60). Since the pressure of the second action chamber (1 1 2) changes only when the piston rod (Work 3) touches the stopper, the stroke of each movement of the piston (Judge 2) is equivalent to the piston rod (Work 2) 3) The distance between the initial position of one end and the stopper, for example, it is actually used to push the bottle (40) to a position for sealing operation, and it is pushed against the bottle (40) by one end of the piston rod (13) When the stop is stopped, the piston (work 2) stops traveling, and Guanzi (40) can perform sealing processing and other procedures-to achieve the purpose of detecting the stroke of the dust cylinder (10). Please refer to the third figure, the throttle valve (62) of this creation is replaced by a one-way throttle valve (30), so that when the first action chamber (1 ") is flooded, the high M oil passes through the single valve To the single-speed outflow of the throttle valve (3 Q), the first action action (1 1 1) is made to (1 1 1), which makes the first action chamber (more rapid when the pressure can be increased. Moreover, the pressure switch (2 0 ) Can also be set between the first action 1 1) and the throttle valve (6 2), and the same effect can be obtained by detecting the pressure change in the first action; when the form of pressure is a double money cylinder, It can be connected to the throttle valve (6 2) and flute-Putian ~, to (1 1 1) and the -acting to (112) and one-way throttle 0483 M241522 valve (3 0 respectively) The pressure switch (20) has the effect of bidirectional stroke positioning detection. To achieve the above-mentioned, the lack of possible cylinder device of this creation, and this creation is not seen in the publication or public envoy, but the application is submitted in accordance with the law The improvement of the stroke positioning detection function of the training tool is indeed a very advanced work.

10 048410 0484

丄V1ZH· J_ JZZ 【圖式簡單說明】 (一)圖式部分丄 V1ZH · J_ JZZ [Schematic description] (I) Schematic part

丄V1ZH· J_ JZZ丄 V1ZH · J_ JZZ

代表圖)。 Y糸本貪j 戶弟—較佳實施例之系統方塊圖( 第二圖··係本創作證 F昂一較佳實施例之系統回路圖。 第四圖:係現有的 之平面示意圖。 第三圖:係本創作第二較佳實施例之系統回路圖。 具行程定位檢知功能之壓缸裝置 (一)元件代表符號: (1 0 )壓缸 (1 1 2 )第二作 (1 2 )活塞 (2 0 )壓力開關 (4 0 )瓶子 (1 1 1)第一作用室 用室(1 1 )缸筒 (1 3 )活塞桿 (3 〇 )單向節流閥 (5 0 )壓缸 (5 2 )活塞 (5 3 )推桿 (6 0 )供壓泵 (6 2 )節流閥 (5 1 )缸筒 (5 2 1 )磁鐵 (5 4 )磁簧開關 (6 1 )換向閥 0485Representative map). Y 糸 本 greedy householder—a block diagram of a preferred embodiment of the system (the second diagram is a circuit diagram of a preferred embodiment of the author Fang. The fourth diagram is a schematic diagram of an existing plane. Three pictures: The system circuit diagram of the second preferred embodiment of the creation. Cylinder device with stroke positioning detection function (a) Symbols of components: (1 0) Cylinder (1 1 2) The second work (1 2) Piston (2 0) Pressure switch (4 0) Bottle (1 1 1) First action chamber (1 1) Cylinder barrel (1 3) Piston rod (30) Check valve (50) Pressure cylinder (5 2) Piston (5 3) Push rod (6 0) Supply pump (6 2) Throttle valve (5 1) Cylinder barrel (5 2 1) Magnet (5 4) Reed switch (6 1) Directional valve 0485

Claims (1)

M241522 玖、申請專利範面: 一壓紅 一種具行程定位; 心证檢知功能之壓缸聿 一節流閥與一壓力開關,其中:x 置,其包含有 該壓缸包含有一缸筒與_活塞 於缸筒中,活塞並將缸筒區分為一 用室,並且第一作用室與第二作用 於一供壓系統; ,活塞可往覆移動的設 第一作用室與一第二作 至分別藉由一管路連接M241522 玖 、 Patent for patent application: a pressure cylinder with stroke positioning; a pressure cylinder with a heart card detection function; a throttle valve and a pressure switch, where: x, which contains the cylinder including a cylinder and _ The piston is in the cylinder, the piston divides the cylinder into a chamber, and the first action chamber and the second act on a pressure supply system; the first action chamber and the second action are arranged separately from each other. Connected by a pipe 與供第,室與第,室“ 以堊力開關接設於節流閥與壓缸間之管路上。 2、如申請專利範圍第1項 ^ ^ ± ^ m 具仃耘疋位檢知功 :之麼缸裝置,所述之麼缸進一步包含有一活塞桿,其一 潘塞上Μ由第二作用室側穿出紅筒用以移動 至觸碰-擋止物,所述節流閥係串接於第二作用室與供麼 系統間的管路上’而所述之壓力開關係接設於所述節流閥 與第二作用室間的管路上。 处^、如申請專利範圍帛丨㉟所述之具行程定位檢知功 月b之壓缸裝置,所述之壓缸進一步包含有一活塞桿,其一 端固設於活塞上,另端由第二作用室側穿出缸筒用以移動 至觸石亚一擋止物,所述節流閥係串接於第一作用室與供壓 系、”充間的嘗路上,而所述之壓力開關係接設於所述節流閥 與第一作用室間的管路上。 4、如申請專利範圍第1項所述之具行程定位檢知功 月b之壓虹袭置,所述之壓紅為雙動壓缸,所述節流閥係串 12 0486 M241522 接於第二作用室與供壓系統間的管路上,而所述之壓力開 關係接設於所述節流閥與第二作用室間的管路上’·所述第 一作用室與供壓系統間的管路上串設有另一節流閥,及一 接設於第一作用室與該節流閥間管路上之壓力開關。 5、如申請專利範圍第2、3或4項所述之具行程定 位檢知功能之壓紅裝置,所述之節流閥為一單向節流閱。 拾、圖式: 如次頁 0487And the supply chamber, the chamber and the chamber are connected by a chalk switch to the pipeline between the throttle and the pressure cylinder. 2. If the scope of the patent application is the first item ^ ^ ± ^ m : A cylinder device, the cylinder further includes a piston rod, one of which is inserted into the red cylinder from the side of the second action chamber for moving to the contact-stopper, the throttle valve system It is connected in series to the pipeline between the second action chamber and the supply system, and the pressure opening relationship is connected to the pipe between the throttle valve and the second action chamber. ㉟The said pressure cylinder device with stroke positioning detection function month b, said pressure cylinder further includes a piston rod, one end of which is fixed on the piston, and the other end passes through the cylinder tube from the side of the second action chamber for Move to the stopper of the contact stone, the throttle valve series is connected in series with the first function chamber and the pressure supply system, and the filling valve is connected to the throttle valve, and the pressure opening relationship is connected to the throttle valve. And the first action chamber. 4. As described in item 1 of the scope of the patent application, the pressure of the stroke positioning detection function month b pressure is set, the pressure red is a double-acting pressure cylinder, the throttle valve series 12 0486 M241522 is connected to the On the pipeline between the second action chamber and the pressure supply system, and the pressure opening relationship is connected to the pipe between the throttle valve and the second action chamber. The pipeline is provided with another throttle valve in series, and a pressure switch connected to the pipeline between the first action chamber and the throttle valve. 5. The red pressure device with stroke positioning detection function described in item 2, 3, or 4 of the scope of patent application, the throttle valve is a one-way throttle reading. Pick up and schema: as next page 0487
TW92214353U 2003-08-07 2003-08-07 Pressure cylinder device functioned with stroke positioning detection TWM241522U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW92214353U TWM241522U (en) 2003-08-07 2003-08-07 Pressure cylinder device functioned with stroke positioning detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW92214353U TWM241522U (en) 2003-08-07 2003-08-07 Pressure cylinder device functioned with stroke positioning detection

Publications (1)

Publication Number Publication Date
TWM241522U true TWM241522U (en) 2004-08-21

Family

ID=34077610

Family Applications (1)

Application Number Title Priority Date Filing Date
TW92214353U TWM241522U (en) 2003-08-07 2003-08-07 Pressure cylinder device functioned with stroke positioning detection

Country Status (1)

Country Link
TW (1) TWM241522U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI487846B (en) * 2013-02-07 2015-06-11 聖約翰科技大學 A hydraulic cylinder with adjustable piston shift motion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI487846B (en) * 2013-02-07 2015-06-11 聖約翰科技大學 A hydraulic cylinder with adjustable piston shift motion

Similar Documents

Publication Publication Date Title
CA2476032A1 (en) Hydraulic drive system and method of operating a hydraulic drive system
CN101191428B (en) Fluid pressure operated piston engine apparatus and method
CN206129760U (en) Pilot operated directional control valve integrated device
EP2894291A3 (en) Novel activating mechanism for controlling the operation of a downhole tool
DK1462661T3 (en) Position measuring device for fluid driven cylinder piston devices
ATE311553T1 (en) MAGNETO-RHEOLOGICAL DAMPER
CN102734236B (en) Pumping reversal hydraulic control system, control method and concrete conveying pump
CN102582098A (en) Dual-station pneumatic stamping machine
TWM241522U (en) Pressure cylinder device functioned with stroke positioning detection
WO2014000388A1 (en) Pump stroke control method for twin-cylinder pump and pumping device
CN207093496U (en) A kind of hydraulic cylinder of tape travel detection
WO1996022937A1 (en) Control unit for hand-operated hydraulic jack
JP6528250B2 (en) Hydraulic drive and method for discrete change of its position output
CN206175354U (en) Bellows test system master cylinder hydraulic control oil circuit
CN106870490A (en) Gas control automatic reversing mechanism
NO20042290L (en) Impact device with a control valve for two alternating pistons
CN208900334U (en) The variable piston displacement detection device of plate variable plunger pump
CN2464777Y (en) Hydraulic-pneumatic driving device for hydraulic piling hammer
CN206530466U (en) Compact metal peristaltic pump
CN201786596U (en) Electro-hydraulic proportional bidirectional-variable axial plunger pump
CN106704157A (en) Compact metal peristaltic pump
TW202118943A (en) An adjustable and bidirectional moving pressure system
CN206290527U (en) A kind of buffering hydraulic cylinder piston apparatus
CN103670990A (en) Pneumatic pump
CN213173943U (en) Water pressure adjusting system in water supply pipe

Legal Events

Date Code Title Description
MM4K Annulment or lapse of a utility model due to non-payment of fees