WO2016149968A1 - 回油结构 - Google Patents

回油结构 Download PDF

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Publication number
WO2016149968A1
WO2016149968A1 PCT/CN2015/076874 CN2015076874W WO2016149968A1 WO 2016149968 A1 WO2016149968 A1 WO 2016149968A1 CN 2015076874 W CN2015076874 W CN 2015076874W WO 2016149968 A1 WO2016149968 A1 WO 2016149968A1
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WO
WIPO (PCT)
Prior art keywords
liquid
communication
chamber
cavity
bead
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Application number
PCT/CN2015/076874
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English (en)
French (fr)
Inventor
陈江
叶俊学
王静芳
Original Assignee
常熟通润汽车零部件股份有限公司
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Filing date
Publication date
Application filed by 常熟通润汽车零部件股份有限公司 filed Critical 常熟通润汽车零部件股份有限公司
Priority to US14/653,856 priority Critical patent/US9809431B2/en
Priority to EP15730039.3A priority patent/EP3095752B1/en
Priority to PL15730039T priority patent/PL3095752T3/pl
Publication of WO2016149968A1 publication Critical patent/WO2016149968A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/26—Supply reservoir or sump assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/021—Valves for interconnecting the fluid chambers of an actuator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/202—Externally-operated valves mounted in or on the actuator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/204—Control means for piston speed or actuating force without external control, e.g. control valve inside the piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/14—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with ball-shaped valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/04—Check valves with guided rigid valve members shaped as balls
    • F16K15/044—Check valves with guided rigid valve members shaped as balls spring-loaded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/01—Control of flow without auxiliary power
    • G05D7/0126—Control of flow without auxiliary power the sensing element being a piston or plunger associated with one or more springs
    • G05D7/0133—Control of flow without auxiliary power the sensing element being a piston or plunger associated with one or more springs within the flow-path
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/01—Control of flow without auxiliary power
    • G05D7/0186—Control of flow without auxiliary power without moving parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1428—Cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1433—End caps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7847—With leak passage

Definitions

  • the invention relates to an oil return structure.
  • Jacks are generally equipped with a return oil structure.
  • the existing oil return structure generally includes a liquid storage chamber, a liquid return chamber, and a communication chamber connected between the liquid storage chamber and the liquid return chamber; a control switch is installed in the communication chamber to control the communication chamber through the control switch.
  • the velocity of the liquid returning to the communication chamber of the liquid return chamber directly affects the descending speed of the jack during operation.
  • the control switch is turned on, the velocity of the liquid in the liquid returning chamber to the communication chamber generally remains unchanged, thereby causing the jack to rapidly drop under no-load or load conditions, which easily causes the weight to be lifted during the load state.
  • the object quickly fell and there was a safety accident such as bruising the operator.
  • the existing oil return structure increases the speed governing mechanism to change the liquid returning speed through the speed regulating mechanism, but due to the cost of the speed regulating mechanism The higher the cost of the entire oil return structure is greatly increased and the industrial demand cannot be met.
  • an object of the present invention to provide an oil return structure which can change the speed at which the liquid in the liquid return chamber flows to the communication chamber, and can also effectively reduce the manufacturing cost.
  • Oil return structure including base, control switch, first bead in the base, installation An elastic member between the first sealing bead and the base;
  • the base is provided with a liquid storage chamber, a liquid returning chamber, a communication cavity, a first communication port connecting the liquid returning cavity and the communication cavity, and a communication communicating cavity a second communication port with the liquid storage chamber;
  • the control switch is configured to control opening and closing of the second communication port to make the communication cavity and the liquid storage cavity in an on or off state;
  • the first blocking bead is in an external force Acting between the blocking position and the opening position; when the first bead is in the open position, the first communication port is completely open to allow the liquid in the liquid returning chamber to flow to the communication cavity through the first communication port;
  • the first communication port is disposed on the communication port of the base, and the first ball is closed at a blocking position to block a portion of the first communication port and cooperate with the inner wall of the communication port to form a liquid-passing gap;
  • the fluid gap communicates with the liquid
  • the control switch includes a second bead located in the base, a valve stem; the valve stem is configured to abut the second bead to maintain the second bead in a closed position of closing the second communication port; the valve stem The thread is attached to the base.
  • One end of the elastic element is located in the communication cavity, and the other end is abutted on the first sealing bead.
  • the first bead is movable between a blocking position and an open position by a combination of an elastic force of the elastic member and a force of the liquid from the liquid return chamber.
  • the opening position is located in an end of the liquid returning chamber adjacent to the first communication port; the diameter of the end of the liquid returning chamber is larger than the diameter of the first blocking bead.
  • the direction of the force applied by the elastic element for the first bead is from the blocking position to the open position.
  • the elastic element is a spring.
  • the liquid in the liquid returning chamber can flow from the second communication port or the liquid passing gap to the communicating cavity to change the throughput of the liquid, thereby changing back.
  • the speed of the liquid in the liquid chamber to the communication chamber; and the structure of the invention is simple, the preparation is simple and convenient, and the manufacturing cost can be effectively reduced; in addition, by using the first sealing bead and the inner wall of the communication port portion to form a liquid-passing gap, Avoid clogging in the fluid gap.
  • Figure 1 is a schematic view of the structure of the present invention
  • FIG. 2 is a schematic view showing a state in which the first bead is in an open position
  • Figure 3 is a schematic view showing the state in which the first bead is located at the blocking position
  • Figure 4 is a schematic view showing another structure of the present invention.
  • the oil return structure of the present invention comprises a base 1, a control switch, and a first ball 2 located in the base 1 and mounted between the first ball 2 and the base 1.
  • the elastic member 3; the base 1 is provided with a liquid storage chamber 11, a liquid return chamber 12, a communication chamber 13, a first communication port 14 between the communication liquid return chamber 12 and the communication chamber 13, a communication communication chamber 13 and a reservoir
  • the first between the liquid chambers 11 a second communication port
  • the control switch is configured to control opening and closing of the second communication port to make the communication cavity 13 and the liquid storage chamber 11 in an on or off state
  • the first ball 2 can be under the action of an external force Moving between the blocking position and the opening position; when the first ball 2 is in the open position, the first communication port 14 is completely open to allow the liquid in the liquid returning chamber 12 to flow through the first communication port 14 to the communication cavity 13;
  • the first communication port 14 is disposed on the communication port portion of the base 1. When the first ball 2 is in the blocking position, the partial region of the first communication port
  • the liquid of the liquid returning chamber 12 flows to the communication chamber 13 through the first communication port 14, and when the first blocking bead 2 is in the blocking position, the liquid returning chamber 12 The liquid can only flow through the liquid passage gap 15 to the communication chamber 13 to reduce the liquid throughput.
  • the movement of the first ball 2 can be used to change the liquid flow area to change the speed of the liquid returning to the communication chamber 13 of the liquid return chamber 12, and
  • the first bead 2 is placed in the open position, and the liquid in the liquid returning chamber 12 flows to the communication chamber 13 through the first communication port 14, so that the jack can be quickly lowered;
  • the first bead 2 is placed in the blocking position, and the liquid in the liquid returning chamber 12 can only flow through the liquid passing gap 15 to the communicating cavity 13.
  • the liquid passing amount can be reduced through the liquid passing gap 15 (in the same time) Therefore, the speed at which the liquid of the liquid return chamber 12 flows to the communication chamber 13 can be slowed down, and a slow drop can be achieved.
  • the structure of the invention is relatively simple, the production is simple and convenient, and the production cost can be effectively reduced.
  • the machining can be performed on the communication port portion. a bead 2 matching sealing surface, and then processing a concave position on the sealing surface, so that the first sealing bead 2 is not completely sealed with the first communication opening 14 when in the blocking position, of course, A bead 2 is arranged in an irregular shape, and an incomplete sealing of the first communication port 14 can also be achieved.
  • the width of the liquid passage gap 15 directly affects the liquid return speed when the first bead 2 is in the blocking position, and can be set according to actual needs.
  • the number of the liquid passing gaps 15 can also be set according to actual needs, for example, one or several strips can be set.
  • one end of the elastic member 3 is located in the communication cavity 13 and the other end is abutted on the first blocking bead 2 to facilitate installation.
  • the first ball 2 can move between a blocking position and an opening position under the action of an external force (for example, hydraulic pressure or the like).
  • the first ball 2 is movable between a blocking position and an opening position by a combination of the elastic force of the elastic member 3 and the force of the liquid from the liquid return chamber 12.
  • the opening position is located in an end of the liquid return chamber 12 adjacent to the first communication port 14; the diameter of the end of the liquid return chamber 12 is larger than the diameter of the first ball 2 .
  • the direction of the force applied by the elastic element 3 to the first ball 2 is from the blocking position to the opening position, that is, when the first ball 2 is in the blocking position, the elasticity The element 3 is in a compressed state, and when the elastic element 3 is released, the first blocking bead 2 is provided with a force for moving toward the open position; and the direction of the force exerted by the liquid from the liquid returning chamber 12 on the first blocking bead 2 The direction from the open position to the blocking position.
  • the elastic element 3 can be a spring, an elastic ring or the like.
  • the control switch comprises a second bead 4 located in the base 1 and a valve stem 5; the valve stem 5 is used to abut the second plug 4 to keep the second plug 4 closed at the closed second communication port Location Upper, the valve stem 5 is screwed onto the base 1.
  • the second bead 4 can be abutted in the closed position by the valve stem 5, so that the second communication port is in the closed state, and the second blocking bead 4 can be released by loosening the valve stem 5. Acting, so that the second flow bead 4 can be lifted up by the flowing liquid so that the second communication port is in an open state.
  • a piston is generally installed in the liquid returning chamber 12 to control the moving speed of the piston through the outflow speed of the liquid in the liquid returning chamber 12, thereby controlling the descending speed of the jack when working by the piston.
  • the hydraulic oil can flow into the liquid storage chamber 11; and when the jack is under the load state, by rotating the valve stem 5, the abutting action on the second sealing bead 4 can be released, and when the elastic force of the spring is less than from the back
  • the first ball 2 is located at the blocking position, and the hydraulic oil flows through the liquid passage gap 15 to the communication chamber 13 (in the direction of the arrow in FIG. 3), and is pushed up through the communication chamber 13
  • the two beads 4 allow the hydraulic oil to flow into the liquid storage chamber 11, which has a slow effect.
  • FIG. 4 is a schematic view showing the structure of a second embodiment of the present invention, which differs from FIG. 1 in the position of the valve stem 5 with respect to the base 1.
  • the valve stem 5 is vertically threadedly coupled to the base 1
  • the valve stem 5 is threadedly coupled to the base 1.
  • the position of the valve stem 5 relative to the base 1 is not limited as long as Can be used to reach the second bead 4 can be.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Automation & Control Theory (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Check Valves (AREA)
  • Pens And Brushes (AREA)

Abstract

一种回油结构，包括基座（1）、控制开关、位于基座（1）内的第一堵珠（2）、安装在第一堵珠（2）与基座（1）之间的弹性元件（3），基座（1）上设置有储液腔（11）、回液腔（12）、连通腔（13）、连通回液腔（12）与连通腔（13）之间的第一连通口（14）、连通连通腔（13）与储液腔（11）之间的第二连通口。控制开关用于控制第二连通口的开闭以使连通腔（13）与储液腔（11）处于导通或阻断状态，第一堵珠（2）可在封堵位置与开启位置之间运动，第一连通口（14）设置在基座（1）的连通口部上，第一堵珠（2）位于封堵位置时封堵第一连通口（14）的部分区域并与连通口部的内壁之间配合形成通液间隙（15），通液间隙（15）连通回液腔（12）与连通腔（13）。该回油结构的结构简单，有利于降低制作成本，可以改变回液腔（12）的液体流向连通腔（13）的速度。

Description

回油结构 技术领域
本发明涉及一种回油结构。
背景技术
千斤顶一般配备有回油结构。现有的回油结构一般包括储液腔、回液腔、连通在储液腔与回液腔之间的连通腔；所述连通腔内安装有控制开关，以通过控制开关控制连通腔的通断。所述回液腔的液体流向连通腔的速度直接影响千斤顶工作时的下降速度。但当控制开关打开后，回液腔内的液体流向连通腔的速度一般保持不变，从而造成千斤顶无论在空载或负载状态下，均快速下降，容易造成在负载状态时被顶升的重物快速跌落从而出现砸伤操作人员等安全事故。而为了满足不同状态要求以改变回液腔内的液体流向连通腔的速度，现有的回油结构增加了调速机构，以通过调速机构改变该回液速度，但由于调速机构的成本较高，造成整个回油结构的成本大大增加，无法满足工业需求。
发明内容
为了克服现有技术的不足，本发明的目的在于提供一种回油结构，其可改变回液腔的液体流向连通腔的速度，而且，还可有效降低制作成本。
为解决上述问题，本发明所采用的技术方案如下：
回油结构，包括基座、控制开关、位于基座内的第一堵珠、安装 在第一堵珠与基座之间的弹性元件；所述基座上设置有储液腔、回液腔、连通腔、连通回液腔与连通腔之间的第一连通口、连通连通腔与储液腔之间的第二连通口；所述控制开关用于控制第二连通口的开闭以使连通腔与储液腔处于导通或阻断状态；所述第一堵珠在外力的作用下可在封堵位置与开启位置之间运动；所述第一堵珠位于开启位置时，第一连通口完全敞开以使回液腔的液体通过第一连通口流向连通腔；所述第一连通口设置在基座的连通口部上，所述第一堵珠位于封堵位置时封堵第一连通口的部分区域并与连通口部的内壁之间配合形成通液间隙；所述通液间隙连通回液腔与连通腔。
所述控制开关包括位于基座内的第二堵珠、阀杆；所述阀杆用于抵顶第二堵珠使第二堵珠保持在闭合第二连通口的闭合位置上；该阀杆螺纹连接在基座上。
所述弹性元件的其中一端位于连通腔内，另一端抵顶于第一堵珠上。
所述第一堵珠在弹性元件的弹力和来自于回液腔的液体的作用力的共同作用下可在封堵位置与开启位置之间运动。
所述开启位置位于回液腔邻近第一连通口的一端内；回液腔的该端的直径大于第一堵珠的直径。
所述弹性元件用于对第一堵珠施加的作用力的方向为从封堵位置指向开启位置的方向。
所述弹性元件为弹簧。
所述第一堵珠位于封堵位置时与连通口部的内壁之间配合形成 若干条通液间隙。
相比现有技术，本发明的有益效果在于：
在使用过程中，随着第一堵珠运动至开启位置或封堵位置，回液腔的液体可从第二连通口或通液间隙流向连通腔，以改变液体的通过量，从而可改变回液腔的液体流向连通腔的速度；而且，本发明的结构简单，制作简单方便，可有效降低制作成本；此外，通过利用第一堵珠与连通口部的内壁配合形成通液间隙，还可避免通液间隙出现堵塞现象。
附图说明
图1为本发明的结构示意图；
图2为第一堵珠位于开启位置的状态示意图；
图3为第一堵珠位于封堵位置的状态示意图；
图4为本发明的另一种结构示意图；
其中，1、基座；11、储液腔；12、回液腔；13、连通腔；14、第一连通口；15、通液间隙；2、第一堵珠；3、弹性元件；4、第二堵珠；5、阀杆。
具体实施方式
下面，结合附图以及具体实施方式，对本发明做进一步描述：
如图1-3所示，为本发明的回油结构，包括基座1、控制开关、位于基座1内的第一堵珠2、安装在第一堵珠2与基座1之间的弹性元件3；所述基座1上设置有储液腔11、回液腔12、连通腔13、连通回液腔12与连通腔13之间的第一连通口14、连通连通腔13与储液腔11之间的第 二连通口；所述控制开关用于控制第二连通口的开闭以使连通腔13与储液腔11处于导通或阻断状态；所述第一堵珠2在外力的作用下可在封堵位置与开启位置之间运动；所述第一堵珠2位于开启位置时，第一连通口14完全敞开以使回液腔12内的液体通过第一连通口14流向连通腔13；所述第一连通口14设置在基座1的连通口部上，所述第一堵珠2位于封堵位置时封堵第一连通口14的部分区域并与连通口部的内壁之间配合形成通液间隙15；所述通液间隙15连通回液腔12与连通腔13。
在使用时，当第一堵珠2位于开启位置时，回液腔12的液体经第一连通口14流向连通腔13，而当第一堵珠2位于封堵位置时，回液腔12的液体只能经通液间隙15流向连通腔13，减少液体通过量，因而，可利用第一堵珠2的运动，改变液体流通区域以改变回液腔12的液体流向连通腔13的速度，而在配合千斤顶的实际使用过程中，在千斤顶空载时，使第一堵珠2位于开启位置，回液腔12的液体经第一连通口14流向连通腔13，从而可快速下降；而在千斤顶负载时，使第一堵珠2位于封堵位置，回液腔12的液体只能通过通液间隙15流向连通腔13，此时，通过通液间隙15可减少液体通过量(在相同时间内)，从而可减慢回液腔12的液体流向连通腔13的速度，可实现慢速下降。而且，本发明的结构较为简单，制作简单方便，可有效降低制作成本。而通过利用第一堵珠2与连通口部的内壁配合形成通液间隙15，还可避免通液间隙15出现堵塞现象。
而为了形成通液间隙15，在加工时，可在连通口部上加工出与第 一堵珠2相匹配的密封面，然后再在此密封面上加工凹位，以使第一堵珠2在封堵位置时与第一连通口14不完全密封，当然，也可直接将第一堵珠2设置为不规则形状，同样可实现该第一连通口14的不完全密封。其中，所述通液间隙15的宽窄直接影响当第一堵珠2位于封堵位置时的回液速度，可依据实际需求而设定。而通液间隙15的数量也可以依据实际需求而设定，例如，可设置为一条或若干条等。
具体的，所述弹性元件3的其中一端位于连通腔13内，另一端抵顶于第一堵珠2上，以方便于安装。
其中，所述第一堵珠2在外力(例如液压力等)的作用下可在封堵位置与开启位置之间运动。而优选的，所述第一堵珠2在弹性元件3的弹力和来自于回液腔12的液体的作用力的共同作用下可在封堵位置与开启位置之间运动。而具体的，所述开启位置位于回液腔12邻近第一连通口14的一端内；回液腔12的该端的直径大于第一堵珠2的直径。
其中，所述弹性元件3用于对第一堵珠2施加的作用力的方向为从封堵位置指向开启位置的方向，也就是说，当第一堵珠2位于封堵位置时，该弹性元件3处于压缩状态，而当弹性元件3释放时可为第一堵珠2提供向着开启位置运动的作用力；则来自于回液腔12的液体对第一堵珠2施加的作用力的方向为从开启位置指向封堵位置的方向。
其中，所述弹性元件3可为弹簧、弹性圈等。
所述控制开关包括位于基座1内的第二堵珠4、阀杆5；所述阀杆5用于抵顶第二堵珠4使第二堵珠4保持在闭合第二连通口的闭合位置 上，该阀杆5螺纹连接在基座1上。而通过简化控制开关的结构，可进一步降低制作成本。在使用时，可通过阀杆5将第二堵珠4抵顶在闭合位置上，从而使第二连通口处于关闭状态，而通过旋松阀杆5可解除对第二堵珠4的抵顶作用，从而可利用流经的液体将第二堵珠4向上顶起，以使第二连通口处于打开状态。
在实际设计中，回液腔12内一般安装有活塞，以通过回液腔12的液体的流出速度控制活塞的运动速度，从而通过活塞控制千斤顶工作时的下降速度。
在实际使用过程中，当千斤顶处于空载时，通过转动阀杆5，可解除对第二堵珠4的抵顶作用，而当弹簧的弹力大于来自于回液腔12的液压油的作用力时，第一堵珠2移动至开启位置，回液腔12的液压油通过第一连通口14流向连通腔13(如图2的箭头方向)，并经连通腔13向上顶推第二堵珠4而使液压油可流到储液腔11中；而当千斤顶处于负载状态时，通过转动阀杆5，可解除对第二堵珠4的抵顶作用，而当弹簧的弹力小于来自于回液腔12的液压油的作用力时，第一堵珠2位于封堵位置，液压油通过通液间隙15流向连通腔13(如图3的箭头方向)，并经连通腔13向上顶推第二堵珠4而使液压油可流到储液腔11中，起到慢速的效果。
图4为本发明的第二种实施方式的结构示意图，其与图1的区别在于：阀杆5相对于基座1的位置。而在图1中，所述阀杆5呈竖直状螺纹连接在基座1上，而在图2中，所述阀杆5呈倾斜状螺纹连接在基座1上。当然，所述阀杆5相对于基座1的位置并不限定，只要 可用于抵顶第二堵珠4即可。
对本领域的技术人员来说，可根据以上描述的技术方案以及构思，做出其它各种相应的改变以及形变，而所有的这些改变以及形变都应该属于本发明权利要求的保护范围之内。

Claims (8)

  1. 回油结构，其特征在于：包括基座、控制开关、位于基座内的第一堵珠、安装在第一堵珠与基座之间的弹性元件；所述基座上设置有储液腔、回液腔、连通腔、连通回液腔与连通腔之间的第一连通口、连通连通腔与储液腔之间的第二连通口；所述控制开关用于控制第二连通口的开闭以使连通腔与储液腔处于导通或阻断状态；所述第一堵珠在外力的作用下可在封堵位置与开启位置之间运动；所述第一堵珠位于开启位置时，第一连通口完全敞开以使回液腔的液体通过第一连通口流向连通腔；所述第一连通口设置在基座的连通口部上，所述第一堵珠位于封堵位置时封堵第一连通口的部分区域并与连通口部的内壁之间配合形成通液间隙；所述通液间隙连通回液腔与连通腔。
  2. 如权利要求1所述的回油结构，其特征在于：所述控制开关包括位于基座内的第二堵珠、阀杆；所述阀杆用于抵顶第二堵珠使第二堵珠保持在闭合第二连通口的闭合位置上；该阀杆螺纹连接在基座上。
  3. 如权利要求1所述的回油结构，其特征在于：所述弹性元件的其中一端位于连通腔内，另一端抵顶于第一堵珠上。
  4. 如权利要求1所述的回油结构，其特征在于：所述第一堵珠在弹性元件的弹力和来自于回液腔的液体的作用力的共同作用下可在封堵位置与开启位置之间运动。
  5. 如权利要求4所述的回油结构，其特征在于：所述开启位置位于回液腔邻近第一连通口的一端内；回液腔的该端的直径大于第一堵珠的直径。
  6. 如权利要求4或5所述的回油结构，其特征在于：所述弹性元件用 于对第一堵珠施加的作用力的方向为从封堵位置指向开启位置的方向。
  7. 如权利要求1所述的回油结构，其特征在于：所述弹性元件为弹簧。
  8. 如权利要求1所述的回油结构，其特征在于：所述第一堵珠位于封堵位置时与连通口部的内壁之间配合形成若干条通液间隙。
PCT/CN2015/076874 2015-03-23 2015-04-17 回油结构 WO2016149968A1 (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107588059A (zh) * 2017-10-24 2018-01-16 徐州徐工矿山机械有限公司 油箱侧面安装大流量顶端油口带新型自封阀的回油过滤器
EP3816094A1 (en) 2019-11-04 2021-05-05 Shinn Fu Corporation Oil returning valve set with multi-stage throttling control

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104692279B (zh) * 2015-03-23 2018-10-12 常熟通润汽车零部件股份有限公司 回油结构

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6923431B2 (en) * 2003-09-23 2005-08-02 Shinn Fu Corporation Three-shift lifting mechanism for jack or the like
US7421841B2 (en) * 2003-09-23 2008-09-09 Shinn Fu Corporation Three-shift lifting mechanism for jack or the like
CN102052357A (zh) * 2010-12-22 2011-05-11 常熟通润汽车零部件股份有限公司 具有自动调节降速的起重器液压部件
CN102225713A (zh) * 2011-04-01 2011-10-26 常熟通润汽车零部件股份有限公司 液压立式运送装置
CN202193586U (zh) * 2011-06-28 2012-04-18 常熟通润汽车千斤顶有限公司 用于立式油压千斤顶的集成式组合阀体
US8523145B2 (en) * 2009-04-02 2013-09-03 Actuant Corporation Jack assembly with integrated pressure relief assembly
CN104692279A (zh) * 2015-03-23 2015-06-10 常熟通润汽车零部件股份有限公司 回油结构
CN204508678U (zh) * 2015-03-23 2015-07-29 常熟通润汽车零部件股份有限公司 回油结构

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3228658A (en) * 1963-12-11 1966-01-11 Applied Power Ind Inc Hydraulic lift
CN2331648Y (zh) * 1998-06-19 1999-08-04 常熟通润机电有限公司 卧式油压千斤顶空行程一泵举升到顶装置
JP3943414B2 (ja) * 2002-03-04 2007-07-11 カヤバ工業株式会社 油圧ジャッキ
EP1468956A1 (en) * 2003-04-14 2004-10-20 Shinn Fu Corporation Lifting jack comprising a lower control system regulating the flow rate of lifting jack oil
CN200940084Y (zh) * 2006-07-10 2007-08-29 常熟通润汽车零部件有限公司 双速液压立式千斤顶
CN201339622Y (zh) * 2009-01-20 2009-11-04 常熟通润汽车零部件股份有限公司 一种新型液压限位结构
CN102009923B (zh) * 2010-12-10 2012-11-21 常熟通润汽车零部件股份有限公司 液压千斤顶的回油结构
EP3000765A4 (en) * 2013-05-20 2017-01-18 Melchor Gabilondo, S.A. Bottle jack
US9382821B2 (en) * 2013-11-01 2016-07-05 Fca Us Llc Biased normally open check valve assembly

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6923431B2 (en) * 2003-09-23 2005-08-02 Shinn Fu Corporation Three-shift lifting mechanism for jack or the like
US7421841B2 (en) * 2003-09-23 2008-09-09 Shinn Fu Corporation Three-shift lifting mechanism for jack or the like
US8523145B2 (en) * 2009-04-02 2013-09-03 Actuant Corporation Jack assembly with integrated pressure relief assembly
CN102052357A (zh) * 2010-12-22 2011-05-11 常熟通润汽车零部件股份有限公司 具有自动调节降速的起重器液压部件
CN102225713A (zh) * 2011-04-01 2011-10-26 常熟通润汽车零部件股份有限公司 液压立式运送装置
CN202193586U (zh) * 2011-06-28 2012-04-18 常熟通润汽车千斤顶有限公司 用于立式油压千斤顶的集成式组合阀体
CN104692279A (zh) * 2015-03-23 2015-06-10 常熟通润汽车零部件股份有限公司 回油结构
CN204508678U (zh) * 2015-03-23 2015-07-29 常熟通润汽车零部件股份有限公司 回油结构

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107588059A (zh) * 2017-10-24 2018-01-16 徐州徐工矿山机械有限公司 油箱侧面安装大流量顶端油口带新型自封阀的回油过滤器
CN107588059B (zh) * 2017-10-24 2024-04-09 徐州徐工矿山机械有限公司 油箱侧面安装大流量顶端油口带新型自封阀的回油过滤器
EP3816094A1 (en) 2019-11-04 2021-05-05 Shinn Fu Corporation Oil returning valve set with multi-stage throttling control

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