CN106015168A - Direct-drive electric symmetric hydraulic cylinder - Google Patents

Direct-drive electric symmetric hydraulic cylinder Download PDF

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Publication number
CN106015168A
CN106015168A CN201610571197.3A CN201610571197A CN106015168A CN 106015168 A CN106015168 A CN 106015168A CN 201610571197 A CN201610571197 A CN 201610571197A CN 106015168 A CN106015168 A CN 106015168A
Authority
CN
China
Prior art keywords
diameter
cylinder barrel
piston rod
cylinder
hydraulic cylinder
Prior art date
Application number
CN201610571197.3A
Other languages
Chinese (zh)
Inventor
齐杨
王超光
刘兵
于安才
张建
Original Assignee
天津优瑞纳斯液压机械有限公司
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 天津优瑞纳斯液压机械有限公司 filed Critical 天津优瑞纳斯液压机械有限公司
Priority to CN201610571197.3A priority Critical patent/CN106015168A/en
Publication of CN106015168A publication Critical patent/CN106015168A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/26Supply reservoir or sump assemblies
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/18Combined units comprising both motor and pump
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2215/00Fluid-actuated devices for displacing a member from one position to another
    • F15B2215/30Constructional details thereof

Abstract

The invention relates to the field of hydraulic cylinder manufacturing, in particular to a direct-drive electric symmetric hydraulic cylinder. The direct-drive electric symmetric hydraulic cylinder is characterized in that a fuel tank, a valve block and a stepping motor are mounted at the rear end of a cylinder barrel in sequence; a bidirectional pump is mounted in the fuel tank; a power input end of the bidirectional pump is connected with an output end of the stepping motor through a coupler; a piston rod penetrates into the cylinder barrel; the end part on one side of the piston rod can extend out of the front end of the cylinder barrel; the end part on the other side of the piston rod is located in the cylinder barrel and provided with an inner cavity; one end of a fixed rod is accommodated in the inner cavity; the other end of the fixed rod is integrated with the inner side of the rear end part of the cylinder barrel; and the area of a circle taking the inside diameter of the cylinder barrel as a diameter is equal to the sum of the area of a circle taking the inside diameter of the inner cavity as a diameter and the area of a circle taking the outside diameter of the piston rod as a diameter.

Description

A kind of direct drive electric symmetrical hydraulic cylinder

Technical field

The present invention relates to hydraulic cylinder and manufacture field, especially a kind of direct drive electric symmetrical hydraulic cylinder.

Background technology

Electric lifting platform is the power lift with electric energy as kinetic energy, and it mainly applies to enterprise, chemical industry, municipal administration, electric power In field.In order to ensure stationarity and the safety of hoistable platform, it will usually use electronic symmetrical hydraulic cylinder as hoistable platform Dynamical element.

But existing electronic symmetrical hydraulic cylinder is due to the active area in front and back chamber, it tends to be difficult to realize the ideal that stretching speed is identical State.Trace it to its cause, be the active area of the ante-chamber taken due to piston rod, in actual use, usually stretch out slow Slow retraction is quick, and therefore deficient in stability is in use likely to result in certain potential safety hazard.

Summary of the invention

It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of compact conformation, stretching speed is identical, can stop protecting A kind of direct drive electric symmetrical hydraulic cylinder of pressure.

The present invention adopts the technical scheme that:

A kind of direct drive electric symmetrical hydraulic cylinder, including a cylinder barrel, it is characterised in that: the rearward end of described cylinder barrel is sequentially installed with Fuel tank, valve block and motor, a two-way pump is installed in described fuel tank, the power intake of this two-way pump passes through a shaft coupling Being connected with the outfan of described motor, be coated with a piston rod in described cylinder barrel, a side end of this piston rod can be by institute The front end stating cylinder barrel is stretched out, and described piston rod is positioned at the end side of cylinder barrel and makes an inner chamber, holds to having one inside this inner chamber One end of fixing bar, the other end of described fixing bar is integrally made inside the rearward end of cylinder barrel, with internal diameter of cylinder for diameter institute shape The area of Cheng Yuan, by within intracavity footpath by diameter formed circle with formed round area sum with piston rod external diameter by diameter.

Advantages of the present invention and good effect be:

In the present invention, fuel tank, valve block, motor coordinates shaft coupling, and two-way pump can realize oil-feed and the oil return of hydraulic oil, from And making the rational in infrastructure compact of symmetrical hydraulic cylinder, cylinder barrel, the matching size of piston rod and inner chamber closes so that with internal diameter of cylinder be Diameter is formed round area, by within intracavity footpath by diameter formed circle with formed round area with piston rod external diameter by diameter Sum, thus ensure that ante-chamber is equal with the active area of back cavity, it is achieved the enforcement purpose that stretching speed is identical;In addition, by Equal with the active area of back cavity in ante-chamber, the most electronic symmetrical hydraulic cylinder can use sealed reservoir, thus hydraulic oil is greatly improved Cleannes, it is to avoid the pollution that it is caused by the dust granules in air, replace hydraulic oil in original opening oil tank and environment made The pollution become.

Accompanying drawing explanation

Fig. 1 is the structural representation of the present invention.

Detailed description of the invention

Below in conjunction with embodiment, the present invention is further described, and following embodiment is illustrative, is not determinate, it is impossible to Protection scope of the present invention is limited with following embodiment.

A kind of direct drive electric symmetrical hydraulic cylinder, including a cylinder barrel 1, the innovation of the present invention is, the rearward end of described cylinder barrel depends on The secondary fuel tank 2 that is provided with, valve block 4 and motor 5, a two-way pump 3 is installed, the power input of this two-way pump in described fuel tank End is connected with the outfan of described motor by a shaft coupling 6, is coated with a piston rod 8, this piston in described cylinder barrel One side end of bar can be stretched out by the front end of described cylinder barrel, and described piston rod is positioned at the end side of cylinder barrel and makes an inner chamber, Holding inside this inner chamber to there being the one end fixing bar 7, the other end of described fixing bar is integrally made inside the rearward end of cylinder barrel, Formed round area with internal diameter of cylinder x by diameter, by within intracavity footpath z formed circle by diameter and with piston rod external diameter y be Diameter is formed round area sum.

In this enforcement, for the kinestate of electronic symmetrical hydraulic cylinder is monitored, displacement sensing can be installed in cylinder barrel rearward end Device, the induction end of this displacement transducer is positioned at inside fixing bar, extends to piston rod leading section, the wiring of institute's displacement sensors End is stretched out by cylinder barrel rearward end and is connected to signal processing apparatus.

In the present embodiment, hydraulic lock also can be installed in cylinder barrel, thus realize piston rod activity all can pressurize lock-bit to optional position Purpose, the safety of lifting device.

The work process of the present invention is:

When the present invention uses, motor starts as described in Figure 1, and now the active area of ante-chamber 9 is internal diameter of cylinder and piston rod The annulus area formed between external diameter, and the full circle area that the active area of back cavity 10 is formed by intracavity diameter, this two area Equal, the most electronic symmetrical hydraulic cylinder can be synchronized stable flexible.

In the present invention, fuel tank, valve block, motor coordinates shaft coupling, and two-way pump can realize oil-feed and the oil return of hydraulic oil, from And making the rational in infrastructure compact of symmetrical hydraulic cylinder, cylinder barrel, the matching size of piston rod and inner chamber closes so that with internal diameter of cylinder be Diameter is formed round area, by within intracavity footpath by diameter formed circle with formed round area with piston rod external diameter by diameter Sum, thus ensure that ante-chamber is equal with the active area of back cavity, it is achieved the enforcement purpose that stretching speed is identical;In addition, by Equal with the active area of back cavity in ante-chamber, the most electronic symmetrical hydraulic cylinder can use sealed reservoir, thus hydraulic oil is greatly improved Cleannes, it is to avoid the pollution that it is caused by the dust granules in air, replace hydraulic oil in original opening oil tank and environment made The pollution become.

Claims (1)

1. a direct drive electric symmetrical hydraulic cylinder, including a cylinder barrel, it is characterised in that: the rearward end of described cylinder barrel is installed successively Having fuel tank, valve block and motor, be provided with a two-way pump in described fuel tank, the power intake of this two-way pump passes through a shaft coupling Device is connected with the outfan of described motor, is coated with a piston rod in described cylinder barrel, and a side end of this piston rod can be by The front end of described cylinder barrel is stretched out, and described piston rod is positioned at the end side of cylinder barrel and makes an inner chamber, holds to having inside this inner chamber One one end fixing bar, the other end of described fixing bar is integrally made inside the rearward end of cylinder barrel, with internal diameter of cylinder for diameter institute Formed circle area, by within intracavity footpath by diameter formed circle and formed round area sum with piston rod external diameter by diameter.
CN201610571197.3A 2016-07-18 2016-07-18 Direct-drive electric symmetric hydraulic cylinder CN106015168A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610571197.3A CN106015168A (en) 2016-07-18 2016-07-18 Direct-drive electric symmetric hydraulic cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610571197.3A CN106015168A (en) 2016-07-18 2016-07-18 Direct-drive electric symmetric hydraulic cylinder

Publications (1)

Publication Number Publication Date
CN106015168A true CN106015168A (en) 2016-10-12

Family

ID=57115987

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610571197.3A CN106015168A (en) 2016-07-18 2016-07-18 Direct-drive electric symmetric hydraulic cylinder

Country Status (1)

Country Link
CN (1) CN106015168A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000346012A (en) * 1999-06-04 2000-12-12 Oil Drive Kogyo Kk Hydraulic cylinder and hydraulic device using thereof
CN1584349A (en) * 2004-06-04 2005-02-23 浙江大学 Rough symmetric double actuating surfaces hydraulic cylinder with single rod
CN1584350A (en) * 2004-06-04 2005-02-23 浙江大学 Single rod and rough symmetric double actuating surfaces hydraulic cylinder with internal displacement sensor
CN103016447A (en) * 2013-01-15 2013-04-03 无锡市三信传动控制有限公司 Constant-pressure and constant-force hydraulic servo cylinder with single outlet rod
CN103307059A (en) * 2013-06-03 2013-09-18 天津优瑞纳斯液压机械有限公司 Hydraulic actuator
CN204961455U (en) * 2015-09-25 2016-01-13 圣邦集团有限公司 Hydro -cylinder, use full cut -off formula hydraulic system of this hydro -cylinder
CN205918697U (en) * 2016-07-18 2017-02-01 天津优瑞纳斯液压机械有限公司 Electronic symmetrical pneumatic cylinder of formula of driving directly

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000346012A (en) * 1999-06-04 2000-12-12 Oil Drive Kogyo Kk Hydraulic cylinder and hydraulic device using thereof
CN1584349A (en) * 2004-06-04 2005-02-23 浙江大学 Rough symmetric double actuating surfaces hydraulic cylinder with single rod
CN1584350A (en) * 2004-06-04 2005-02-23 浙江大学 Single rod and rough symmetric double actuating surfaces hydraulic cylinder with internal displacement sensor
CN103016447A (en) * 2013-01-15 2013-04-03 无锡市三信传动控制有限公司 Constant-pressure and constant-force hydraulic servo cylinder with single outlet rod
CN103307059A (en) * 2013-06-03 2013-09-18 天津优瑞纳斯液压机械有限公司 Hydraulic actuator
CN204961455U (en) * 2015-09-25 2016-01-13 圣邦集团有限公司 Hydro -cylinder, use full cut -off formula hydraulic system of this hydro -cylinder
CN205918697U (en) * 2016-07-18 2017-02-01 天津优瑞纳斯液压机械有限公司 Electronic symmetrical pneumatic cylinder of formula of driving directly

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Application publication date: 20161012