CN107120325A - Hoistable platform Pure water hydraulic drive system - Google Patents
Hoistable platform Pure water hydraulic drive system Download PDFInfo
- Publication number
- CN107120325A CN107120325A CN201710288269.8A CN201710288269A CN107120325A CN 107120325 A CN107120325 A CN 107120325A CN 201710288269 A CN201710288269 A CN 201710288269A CN 107120325 A CN107120325 A CN 107120325A
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- CN
- China
- Prior art keywords
- valve
- hydraulic
- water
- water inlet
- delivery port
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- 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
- F15B1/02—Installations or systems with accumulators
- F15B1/022—Installations or systems with accumulators used as an emergency power source, e.g. in case of pump failure
-
- 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
- F15B1/02—Installations or systems with accumulators
- F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/863—Control during or prevention of abnormal conditions the abnormal condition being a hydraulic or pneumatic failure
- F15B2211/8633—Pressure source supply failure
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of hoistable platform Pure water hydraulic drive system, hydraulic transmission medium, including hydraulic piston cylinder, three-position four-way electromagnetic directional valve, proportioning valve, accumulator, check valve, hydraulic control one-way valve, plunger water pump, variable-frequency motor, overflow valve, filter and water tank are used as using deionized water.The present invention is adjusted in real time using three-position four-way electromagnetic directional valve and proportioning valve to hydraulic cylinder motion state, the movement velocity of accurate control hoistable platform.Required for hoistable platform heavy duty, using accumulator is as auxiliary power source and devises accumulator relief circuit, the service life of accumulator is improved while the installed power for the system that reduces.Pure Water Hydraulic Drive Technology is applied in hoistable platform by the present invention, for the particularity of hydraulic pressure component, devises special loop, can be widely applied for all kinds of hoistable platforms under high temperature naked light radiation occasion and the inflammable and explosive environment such as pollution-free.
Description
Technical field
The present invention relates to a kind of hydraulic lifting system, more particularly to a kind of hoistable platform Pure water hydraulic drive system.
Background technology
Hydraulic elevating platform is widely used in various engineering places, and fluid power system possesses following as its core system
Main feature：1) being perfectly safe reliably in lifting process is ensured.Jacking system typically carries larger heavy burden or direct pass
Personal safety is tied to, therefore hydraulic lifting system should ensure that to be not in that unexpected situation causes weight to decline suddenly；2) weight is lifted
Being capable of reliably locking or locking certain time after thing；3) rise and decrease speed is adjustable or part is adjustable.In order to ensure personnel's
The impact that comfortableness or avoid is likely to occur, jacking system will have preferable stationarity in speed regulation process, should not occur
Violent vibratory impulse.
Traditional hydraulic lifting system is using mineral type hydraulic oil as working media, but hydraulic oil has inflammable and dirt
Contaminate two big critical defects so that it is not only difficult to popularization and application in industries such as food, beverage, medicine, electronics, packagings, and
And also gradually lose application in the high temperature naked light occasion such as metallurgy, hot rolling, casting and the inferior inflammable and explosive environment of coal mine.Closely
Nian Lai, based on people to ecological environmental protection, safety in production and save the energy pay attention to day by day, with natural fresh water, seawater or
Running water proxy mineral oil is used as the heat that the Pure Water Hydraulic Drive Technology of hydraulic work system medium is international Hydraulic Industry common concern
Point, is applied in above-mentioned field.
Current Hydraulic Drive Technology has been obtained for sufficient attention in foreign country, and achieves many breakthroughs,
Their industrial circle also plays more and more important role.Because the country starts late to the research of water hydraulics, technology
It is not mature enough compared to hydraulic technology, the application of Hydraulic Drive Technology at home is also confined to several special occasions.Will be pure
Water hydraulics technology is applied in hoistable platform, solves the problems, such as that Practical Project is not promoted effectively also at home.
The content of the invention
It is an object of the invention to provide a kind of hoistable platform Pure water hydraulic drive system, solve traditional in background technology
Requirement of the pollution that hydraulic lifting system is present with inflammable two large problems and guarantee hoistable platform to its drive system, Neng Gouman
The use requirement of hoistable platform under a variety of occasions of foot.
The technical solution adopted for the present invention to solve the technical problems includes：A kind of hoistable platform pure water hydraulicses drivetrain
System, it includes：Filter, plunger pump, variable-frequency motor, overflow valve, the first bi-bit bi-pass reversal valve, check valve, the first proportioning valve,
Accumulator, the second bi-bit bi-pass reversal valve, hydraulic control one-way valve, the second proportioning valve, three position four-way directional control valve, hydraulic cylinder, water tank；
Wherein variable-frequency motor is connected with plunger pump, and driving plug pump work, the water inlet of filter is connected with water tank, filter
Delivery port connected with the water sucking mouth of plunger pump, the delivery port of plunger pump and the water inlet of overflow valve, the first bi-bit bi-pass commutate
The water inlet of valve, the water inlet of check valve, the control mouth of a river connection of hydraulic control one-way valve, the delivery port of overflow valve, the one or two two
The delivery port of logical reversal valve is connected with water tank, the water inlet of the delivery port of check valve and the first proportioning valve, the mouth of a river of accumulator, the
The water inlet connection of two bi-bit bi-pass reversal valves, the delivery port of the second bi-bit bi-pass reversal valve and the water inlet of hydraulic control one-way valve connect
Logical, the delivery port of hydraulic control one-way valve is connected with water tank, and the delivery port of the first proportioning valve and the water inlet of three position four-way directional control valve connect
Logical, the first work mouth of a river of three position four-way directional control valve is connected with the rodless cavity of hydraulic cylinder, the second work of three position four-way directional control valve
The mouth of a river is blocked, and the water return outlet of three position four-way directional control valve is connected with the water inlet of the second proportioning valve, the delivery port of the second proportioning valve with
Water tank is connected, and hydraulic cylinder rod chamber is directly connected with water tank..
The invention has the advantages that：The present invention is selected using hydraulic transmission medium of the deionized water as system
Three position four-way directional control valve and normally closed type proportioning valve accurately control water hydraulic cylinder piston bar to stretch out and retraction movement speed in pure water hydraulicses
Degree, with very high reliability.Using accumulator as auxiliary power source, reduce system installed power and can be in electricity
As emergency power supply in the case of pump failure, the security of system is improved.Its intrinsic spatter property of pure water and anti-flammability are full
Safety and environmental protection requirement under sufficient specific condition, make such a hydraulic driving system can apply to high temperature naked light radiation occasion
And all kinds of hoistable platforms under the inflammable and explosive environment such as pollution-free.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the principle schematic diagram of the present invention；
In figure：Filter 1, plunger pump 2, variable-frequency motor 3, overflow valve 4, the first bi-bit bi-pass reversal valve 5, check valve 6,
One proportioning valve 7, accumulator 8, the second bi-bit bi-pass reversal valve 9, hydraulic control one-way valve 10, the second proportioning valve 11,3-position 4-way commutation
Valve 12, hydraulic cylinder 13, water tank 14.
Embodiment
As shown in Figure 1, hoistable platform Pure water hydraulic drive system of the present invention includes：Filter 1, plunger pump 2, variable-frequency electric
Machine 3, overflow valve 4, the first bi-bit bi-pass reversal valve 5, check valve 6, the first proportioning valve 7, accumulator 8, the commutation of the second bi-bit bi-pass
Valve 9, hydraulic control one-way valve 10, the second proportioning valve 11, three position four-way directional control valve 12, hydraulic cylinder 13, water tank 14.
Wherein, variable-frequency motor 3 is connected with plunger pump 2, and driving plunger pump 2 works, the water inlet T of filter 11With water tank 14
Connection, the delivery port P of filter 11With the water sucking mouth T of plunger pump 22Connection, the delivery port P of plunger pump 22With the water inlet of overflow valve 4
Mouth P3, the first bi-bit bi-pass reversal valve 5 water inlet P4, check valve 6 water inlet P5, hydraulic control one-way valve 10 control mouth of a river K1
Connection, the delivery port T of overflow valve 43, the first bi-bit bi-pass reversal valve 5 water outlet A1Connected with water tank 14, the water outlet of check valve 6
Mouth P3With the water inlet P of the first proportioning valve 77, accumulator 8 mouth of a river P8, the second bi-bit bi-pass reversal valve 9 water inlet P9Connection,
The water outlet A of second bi-bit bi-pass reversal valve 92With the water inlet P of hydraulic control one-way valve 1010Connection, the water outlet of hydraulic control one-way valve 10
Mouth P11Connected with water tank 14, the water outlet A of the first proportioning valve 73With the water inlet P of three position four-way directional control valve 1213Connection, three four
First work mouth of a river A of logical reversal valve 125Connected with the rodless cavity of hydraulic cylinder 13, the second working water of three position four-way directional control valve 12
Mouth B1To block state, the water return outlet T of three position four-way directional control valve 124With the water inlet P of the second proportioning valve 1112Connection, the second ratio
The water outlet A of example valve 114Connected with water tank 14, hydraulic cylinder rod chamber is directly connected with water tank 14..
The course of work of the present invention is as follows：
Under original state, the first bi-bit bi-pass reversal valve 5, the first proportioning valve 7, the second bi-bit bi-pass reversal valve 9, second ratio
Example valve 11, three position four-way directional control valve 12 are in locking states all in off-position, hydraulic cylinder 13, and now hoistable platform is static.
Pumping station system, which is powered, starts working, and pumping station system employs the power source mode of single pump+frequency control+overflow valve supply water, simultaneously
In order to improve filtering accuracy, the system failure is reduced, increases at the pumping mouth of a river and filters.Variable-frequency motor 3 starts to drive plunger pump 2 first
Work, plunger pump output water under high pressure enters inside accumulator by check valve 6, completes the fliud flushing process of accumulator.Work as accumulator
When needing off-load, electric-motor pump is stopped, the energization work of the first bi-bit bi-pass reversal valve 5, completes the control water of hydraulic control one-way valve 10
Mouth K1The off-load work at place, herein, the energization work of the second bi-bit bi-pass reversal valve 9, accumulator inner high voltage water sequentially passes through second
Bi-bit bi-pass reversal valve 9 and the reflow tank of hydraulic control one-way valve 10, complete the off-load work of accumulator.
Platform uphill process：Pure water hydraulic drive system is started working, and system selects 3-position 4-way in pure water hydraulicses to commutate
Valve and normally closed type proportioning valve accurately control water hydraulic cylinder piston bar to stretch out movement velocity.First proportioning valve 7 and 3-position 4-way commutation
The left position electromagnet of valve 12 is powered, and plunger pump output water under high pressure sequentially passes through check valve 6, the first proportioning valve 7,3-position 4-way commutation
Valve 12 enters the rodless cavity of hydraulic cylinder, promotes the direct reflow tank of water in piston upwards, hydraulic cylinder rod chamber.On platform
Capable speed is by the first proportioning valve 7 to set up to meet requirement of system design.
Platform declines process：Platform declines by deadweight, the right position electricity of the second proportioning valve 11 and three position four-way directional control valve 12
Magnet is powered, and the water under high pressure in hydraulic cylinder rodless cavity starts off-load, is flowed back to through three position four-way directional control valve 12,2 second proportioning valves 11
Water tank, piston declines under gravity, and the decrease speed changing rule and end speed of piston are set up by the second proportioning valve 11,
It is able to ensure that platform stable movement during decline.
Claims (1)
1. a kind of hoistable platform Pure water hydraulic drive system, it is characterised in that it includes：Filter (1), plunger pump (2), frequency conversion
Motor (3), overflow valve (4), the first bi-bit bi-pass reversal valve (5), check valve (6), the first proportioning valve (7), accumulator (8),
Two bi-bit bi-pass reversal valves (9), hydraulic control one-way valve (10), the second proportioning valve (11), three position four-way directional control valve (12), hydraulic cylinder
(13), water tank (14) etc.；
Wherein, variable-frequency motor (3) is connected with plunger pump (2), and the water inlet of filter (1) is connected with water tank (14), filter (1)
Delivery port connected with the water sucking mouth of plunger pump (2), the delivery port of plunger pump (2) water inlet respectively with overflow valve (4), first
The water inlet of bi-bit bi-pass reversal valve (5), the water inlet of check valve (6), the control mouth of a river connection of hydraulic control one-way valve (10), overflow
The delivery port of valve (4), the delivery port of the first bi-bit bi-pass reversal valve (5) are connected with water tank (14), the delivery port point of check valve (6)
Water inlet, the mouth of a river of accumulator (8), the water inlet of the second bi-bit bi-pass reversal valve (9) not with the first proportioning valve (7) are connected,
The delivery port of second bi-bit bi-pass reversal valve (9) connects with the water inlet of hydraulic control one-way valve (10), and hydraulic control one-way valve (10) go out
The mouth of a river is connected with water tank (14), and the delivery port of the first proportioning valve (7) is connected with the water inlet of three position four-way directional control valve (12), three
The first work mouth of a river of four-way reversing valve (12) is connected with the rodless cavity of hydraulic cylinder (13), and the second of three position four-way directional control valve (12)
The work mouth of a river is blocked, and the water return outlet of three position four-way directional control valve (12) is connected with the water inlet of the second proportioning valve (11), the second ratio
The delivery port of valve (11) is connected with water tank (14).Hydraulic cylinder rod chamber is directly connected with water tank (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710288269.8A CN107120325B (en) | 2017-04-27 | 2017-04-27 | Hoistable platform Pure water hydraulic drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710288269.8A CN107120325B (en) | 2017-04-27 | 2017-04-27 | Hoistable platform Pure water hydraulic drive system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107120325A true CN107120325A (en) | 2017-09-01 |
| CN107120325B CN107120325B (en) | 2018-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710288269.8A Active CN107120325B (en) | 2017-04-27 | 2017-04-27 | Hoistable platform Pure water hydraulic drive system |
Country Status (1)
| Country | Link |
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| CN (1) | CN107120325B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973449A (en) * | 2019-03-01 | 2019-07-05 | 武汉船用机械有限责任公司 | The hydraulic control system of hoistable platform |
| CN111594492A (en) * | 2020-05-27 | 2020-08-28 | 珠海方博科技有限公司 | Control method and system for ground service system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH622067A5 (en) * | 1978-03-13 | 1981-03-13 | Interbrev Sa | Hydraulic circuit for controlling the injection piston of an oil-hydraulic moulding machine |
| JP2000329105A (en) * | 1999-05-17 | 2000-11-28 | Atec:Kk | Hydraulic cylinder driving device |
| JP2008157399A (en) * | 2006-12-26 | 2008-07-10 | Nabtesco Corp | Hydraulic cylinder driving circuit |
| CN101799024A (en) * | 2010-03-30 | 2010-08-11 | 中国船舶重工集团公司第七〇二研究所 | Synchronous hydraulic transmission system |
| CN102897687A (en) * | 2012-09-27 | 2013-01-30 | 浙江大学 | Pure water hydraulic drive system of lifting platform |
| CN203743139U (en) * | 2014-03-11 | 2014-07-30 | 山河智能装备股份有限公司 | Multi-cylinder synchronous electrohydraulic control system under load varying condition |
| CN104675773B (en) * | 2015-03-06 | 2016-11-23 | 浙江大学 | A kind of roll squeezer pure water hydraulics system and method for roll-in speed control accurate |
| CN104828721B (en) * | 2015-05-05 | 2016-08-17 | 中国水产科学研究院渔业机械仪器研究所 | Self-balancing compensates system, ship's crane and control method thereof |
| CN104847738B (en) * | 2015-06-03 | 2017-01-25 | 宁波恒力液压股份有限公司 | Parallel energy-saving technology based high-frequency single-acting hydraulic cylinder durability test device and method |
-
2017
- 2017-04-27 CN CN201710288269.8A patent/CN107120325B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973449A (en) * | 2019-03-01 | 2019-07-05 | 武汉船用机械有限责任公司 | The hydraulic control system of hoistable platform |
| CN111594492A (en) * | 2020-05-27 | 2020-08-28 | 珠海方博科技有限公司 | Control method and system for ground service system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107120325B (en) | 2018-08-14 |
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