CN105927601B - One kind lifting hydraulic system - Google Patents
One kind lifting hydraulic system Download PDFInfo
- Publication number
- CN105927601B CN105927601B CN201610334611.9A CN201610334611A CN105927601B CN 105927601 B CN105927601 B CN 105927601B CN 201610334611 A CN201610334611 A CN 201610334611A CN 105927601 B CN105927601 B CN 105927601B
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- Prior art keywords
- valve
- mouths
- solenoid directional
- directional control
- hydraulic system
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/12—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of 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
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses one kind to lift hydraulic system, belongs to hydraulic system field.The lifting hydraulic system includes：Balanced valve, first shuttle valve, first solenoid directional control valve, second solenoid directional control valve and first throttle valve, the oil inlet of balanced valve connects with the first oil inlet of the first shuttle valve, the oil-out of balanced valve connects with the A mouths of motor, the B mouths of motor connect with the control port of the balanced valve and the A mouths of first solenoid directional control valve respectively, B mouth of the control port of the balanced valve also with first solenoid directional control valve connects, first hydraulic fluid port of the first throttle valve connects with the control port of the balanced valve, second hydraulic fluid port of the first throttle valve connects with the B mouths of first solenoid directional control valve, the C mouths of first solenoid directional control valve connect with the second oil inlet of first shuttle valve.Balanced valve in the lifting hydraulic system is one-way balance valve, and the price of one-way balance valve is less than the price of Bidirectional balanced valve, so as to reduce the cost in lifting hydraulic system.
Description
Technical field
The present invention relates to hydraulic system field, more particularly to a kind of lifting hydraulic system.
Background technology
Lifting hydraulic system is usually applied in the hydraulic system for lifting of crane hydraulic system and ocean platform.
In existing lifting hydraulic system, the oil inlet quantity of two actuator ports of motor is controlled by Bidirectional balanced valve,
The Bidirectional balanced valve includes two balanced valves.
During the present invention is realized, inventor has found that prior art at least has problems with：
During weight is increased, its balanced valve does not work simultaneously existing lifting hydraulic system, and two-way flat
The valve price that weighs is high, improves the cost of the lifting hydraulic system.
The content of the invention
In order to solve the problems, such as that the cost for lifting hydraulic system in the prior art is high, the embodiments of the invention provide one kind to carry
Rise hydraulic system.The technical scheme is as follows：
The embodiments of the invention provide one kind to lift hydraulic system, and the lifting hydraulic system includes：Balanced valve, the first shuttle
Valve, the first solenoid directional control valve, the second solenoid directional control valve and first throttle valve, the oil inlet of the balanced valve and first shuttle valve
The connection of the first oil inlet, the oil-out of the balanced valve connect with the A mouths of motor, and the B mouths of the motor are put down with described respectively
The control port of weighing apparatus valve connects with the A mouths of first solenoid directional control valve, and the control port of the balanced valve is also with described first
The B mouths connection of solenoid directional control valve, the first hydraulic fluid port of the first throttle valve connects with the control port of the balanced valve, and described the
Second hydraulic fluid port of one choke valve connects with the B mouths of first solenoid directional control valve, the C mouths of first solenoid directional control valve with it is described
The second oil inlet connection of first shuttle valve, the oil-out of first shuttle valve connect with the A mouths of second solenoid directional control valve, institute
The B mouths for stating the second solenoid directional control valve connect with the oil inlet of brake, and C mouths and the drain tap of second solenoid directional control valve connect
It is logical.
Specifically, the lifting hydraulic system also includes：Second throttle and the first check valve, the second throttle
C mouth of the oil inlet of first hydraulic fluid port and first check valve with second solenoid directional control valve connects, second throttling
Oil inlet of the oil-out of second hydraulic fluid port of valve and first check valve with the brake connects, the second throttle
The second hydraulic fluid port also connected with the drain tap.
Further, the lifting hydraulic system also includes：3rd choke valve, the oil inlet of the 3rd choke valve and institute
The C mouths connection of the second solenoid directional control valve is stated, the oil-out of the 3rd choke valve connects with the drain tap.
Specifically, the first oil inlet of first shuttle valve is communicated with the first pressure measuring tie-in.
Specifically, the second oil inlet of first shuttle valve is communicated with the second pressure measuring tie-in.
Specifically, the lifting hydraulic system also includes：Second shuttle valve and first pressure sensor, second shuttle valve
First oil inlet connects with the A mouths of the motor, and the second oil inlet of second shuttle valve connects with the B mouths of the motor, institute
The oil-out for stating the second shuttle valve connects with the first pressure sensor.
Further, the first oil inlet of second shuttle valve is communicated with the 3rd pressure measuring tie-in.
Further, the second oil inlet of second shuttle valve is communicated with the 4th pressure measuring tie-in.
Specifically, second pressure sensor is installed on the brake.
Specifically, first solenoid directional control valve and second solenoid directional control valve are two-bit triplet solenoid directional control valve.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：Lifting hydraulic pressure provided in an embodiment of the present invention
Balanced valve in system is one-way balance valve, eliminates the balanced valve at the motor B mouths of lifting hydraulic system, one-way balance valve valency
Lattice are low, reduce lifting hydraulic system cost, in addition, when weight decline exceed the speed limit when, hydraulic oil by the first solenoid directional control valve B
Mouthful and flow into the B mouths of motor, the pressure at motor B mouths reduces so that pressure reduces at the control port of balanced valve, balanced valve
Opening diminishes, and reduces the speed of weight decline, makes weight decrease speed be easier to control, is not easy stall, meanwhile, carried in weight
During rising, hydraulic oil is by the oil inlet oil-feed of balanced valve, the A mouths outflow by motor by the first solenoid directional control valve, without
First throttle valve is crossed, this causes the fast efficiency high of heavy lift speed, and when weight declines, hydraulic oil is by the first solenoid directional control valve
C mouths flow into, and by first throttle valve, first throttle valve can be such that weight smoothly declines, and improve the peace of lifting hydraulic system
Quan Xing.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the hydraulic schematic diagram of lifting hydraulic system provided in an embodiment of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment
The embodiments of the invention provide one kind to lift hydraulic system, as shown in figure 1, the lifting hydraulic system includes：Balance
Valve 1, the first shuttle valve 2, the first solenoid directional control valve 3, the second solenoid directional control valve 4 and first throttle valve 5, the oil inlet of balanced valve 1 with
The first oil inlet connection of first shuttle valve 2, the oil-out of balanced valve 1 connect with motor a A mouths, and motor a B mouths are respectively with putting down
The control port of weighing apparatus valve 1 connects with the A mouths of the first solenoid directional control valve 3, the control port of balanced valve 1 also with the first solenoid directional control valve
3 B mouths connection, the first hydraulic fluid port of first throttle valve 5 connect with the control port of balanced valve 1, the second hydraulic fluid port of first throttle valve 5
Being connected with the B mouths of the first solenoid directional control valve 3, the C mouths of the first solenoid directional control valve 3 connect with the second oil inlet of the first shuttle valve 2, the
The oil-out of one shuttle valve 2 connects with the A mouths of the second solenoid directional control valve 4, the B mouths of the second solenoid directional control valve 4 and brake b oil-feed
Mouth connection, the C mouths of the second solenoid directional control valve 4 connect with drain tap L2.
Specifically, the lifting hydraulic system can also include：The check valve 7 of second throttle 6 and first, second throttle 6
The first hydraulic fluid port and C mouth of the oil inlet with the second solenoid directional control valve 4 of the first check valve 7 connect, the second of second throttle 6
Oil inlet of the oil-out of hydraulic fluid port and the first check valve 7 with brake b connects, and the second hydraulic fluid port of second throttle 6 is also with letting out
Hydraulic fluid port L2 is connected.When brake b is opened, control oil passes through the first check valve 7, realizes brake b quick unlatching；Work as closing
During brake b, control oil passes through second throttle 6, slowly closing, it is achieved thereby that brake b's changes down pass soon, and then,
During startup, first motor a is rotated further by after quick unlatching brake b.
Further, the lifting hydraulic system can also include：3rd choke valve 8, the oil inlet of the 3rd choke valve 8 and
The C mouths connection of two solenoid directional control valves 4, the oil inlet of the 3rd choke valve 8 connect with drain tap L2.When system fuel cut-off, system
Dynamic device b control oil realizes pressure release by the 3rd choke valve 8, makes brake b pressure leak process more steady.
Specifically, the first oil inlet of the first shuttle valve 2 is communicated with the first pressure measuring tie-in 12, the second oil-feed of the first shuttle valve 2
Mouth is communicated with the second pressure measuring tie-in 13.First pressure measuring tie-in 12 is used for install sensor, so as to detect the pressure at motor a A mouths
Power, the second pressure measuring tie-in 13 are used for install sensor, so as to detect the pressure at motor a B mouths.
Specifically, the lifting hydraulic system can also include：Second shuttle valve 9 and first pressure sensor 10, the second shuttle valve 9
The first oil inlet connected with motor a A mouths, the second oil inlet of the second shuttle valve 9 connects with motor a B mouths, the second shuttle valve 9
Oil-out connected with first pressure sensor 10.The first oil inlet and the second oil inlet of second shuttle valve 9 are respectively by hydraulic oil
It is transferred to by the oil-out of the second shuttle valve 9 on first pressure sensor 10, can compares by first pressure sensor 10
First oil inlet of two shuttle valves 9 and the pressure of the second oil inlet both sides, and the pressure value of the higher side of pressure is detected, so as to judge
Motor a state.
Further, the first oil inlet of the second shuttle valve 9 is communicated with the 3rd pressure measuring tie-in 14, and the second of the second shuttle valve 9 enters
Hydraulic fluid port is communicated with the 4th pressure measuring tie-in 15.3rd pressure measuring tie-in 14 is used for install sensor, so as to detect the oil inlet of balanced valve 1
The pressure at place, that is, lift the pressure at hydraulic system oil inlet A.4th pressure measuring tie-in 15 is used for install sensor, so as to detect
Pressure at the C mouths of first solenoid directional control valve 3, that is, lift the pressure at hydraulic system oil inlet B.
Specifically, second pressure sensor 11 can be installed, second pressure sensor 11 is directly connected on system on brake b
On dynamic device b, brake b pressure can be directly detected, so as to judge brake b state.
Specifically, the first solenoid directional control valve 3 and the second solenoid directional control valve 4 can be two-bit triplet solenoid directional control valve.
It following is a brief introduction of the operation principle of lifting hydraulic system provided in an embodiment of the present invention：
In the case where lifting operating mode, hydraulic oil is divided into two-way hydraulic oil after being flowed into by the A mouths of lifting hydraulic system, all the way hydraulic oil
The first oil inlet of the first shuttle valve 2 is flowed into, is flowed out by the oil-out of the first shuttle valve 2, flows into the A mouths of the second solenoid directional control valve 4, by
The C mouths of second solenoid directional control valve 4 are exited into brake b, and for control brake b, another way hydraulic oil flows through balanced valve 1
Flow to motor a, the A mouths of the first solenoid directional control valve 3, the electromagnetism of the first solenoid directional control valve 3 obtain it is electric, i.e. DT1 obtain it is electric, hydraulic oil by
The C mouths outflow of first solenoid directional control valve 3, is flowed out, hydraulic oil can drive horse when flowing through motor a by the B mouths of lifting hydraulic system
Rotated up to a, so as to realize motor a lifting operation；
In the case where weight declines operating mode, hydraulic oil is divided into two-way hydraulic oil after being flowed into by the B mouths of lifting hydraulic system, all the way liquid
Force feed flows into the second oil inlet of the first shuttle valve 2, is flowed out by the oil-out of the first shuttle valve 2, flows into the A of the second solenoid directional control valve 4
Mouthful, exited into by the C mouths of the second solenoid directional control valve 4 in brake b, for control brake b, another way hydraulic oil is by first
The C mouths of solenoid directional control valve 3 flow into, and are flowed out by the B mouths of the first solenoid directional control valve 3, by first throttle valve 5, the control of balanced valve 1
Hydraulic fluid port oil-feed, and then open balanced valve 1, hydraulic oil is by motor a and drives motor a to rotate, and declines weight, hydraulic oil by
Lift the A mouths outflow of hydraulic system；
Damped condition：Stop, to lifting hydraulic system fuel feeding, the weight equalizer weight first of balanced valve 1, making motor a stop turning
It is dynamic, motor a stalling rear brake b lockings；
Maintenance or system exhaust operating mode：The electromagnetism of second solenoid directional control valve 4 obtain it is electric, brake b control hydraulic oil directly with
Drain tap L2 is communicated, it is ensured that brake b locks motor a completely, so as to overhauled or system exhaust work.
Balanced valve in lifting hydraulic system provided in an embodiment of the present invention is one-way balance valve, eliminates lifting hydraulic pressure system
Balanced valve at the motor B mouths of system, one-way balance valve price is low, reduces the cost of lifting hydraulic system, in addition, when under weight
During drop hypervelocity, hydraulic oil by the first solenoid directional control valve B mouths and flow into the B mouths of motor, the pressure at motor B mouths reduces so that
Pressure reduces at the control port of balanced valve, and the opening of balanced valve diminishes, and reduces the speed of weight decline, makes reduction of speed under weight
Degree is easier to control, and is not easy stall, meanwhile, during heavy lift, hydraulic oil is passed through by the oil inlet oil-feed of balanced valve
Motor is flowed out by the A mouths of the first solenoid directional control valve, and without first throttle valve, this causes the fast efficiency high of heavy lift speed, when
When weight declines, hydraulic oil is flowed into by the C mouths of the first solenoid directional control valve, and by first throttle valve, first throttle valve can make weight
Thing smoothly declines, and improves the security of lifting hydraulic system, in addition, the reversal valve in the hydraulic system maintenance or maintenance
DT2 obtain it is electric, brake control oil is directly communicated with drain tap, brake is locked completely, and motor can be avoided to have the risk to drop,
Meanwhile brake can be realized and change down pass soon, both brake was first opened, and was rotated after motor；After motor comes to a complete stop, brake is locked again
Tightly, this avoid the abrasion of brake.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (10)
1. one kind lifting hydraulic system, it is characterised in that the lifting hydraulic system includes：Balanced valve (1), the first shuttle valve (2),
First solenoid directional control valve (3), the second solenoid directional control valve (4) and first throttle valve (5), the oil inlet of the balanced valve (1) and institute
The first oil inlet connection of the first shuttle valve (2) is stated, the oil-out of the balanced valve (1) connects with the A mouths of motor (a), the horse
B mouths up to (a) connect with the control port of the balanced valve (1) and the A mouths of first solenoid directional control valve (3) respectively, described
B mouth of the control port of balanced valve (1) also with first solenoid directional control valve (3) connects, and the first of the first throttle valve (5)
Hydraulic fluid port connects with the control port of the balanced valve (1), and the second hydraulic fluid port and first electromagnetism of the first throttle valve (5) change
Being connected to the B mouths of valve (3), the C mouths of first solenoid directional control valve (3) connect with the second oil inlet of first shuttle valve (2),
The oil-out of first shuttle valve (2) connects with the A mouths of second solenoid directional control valve (4), second solenoid directional control valve (4)
B mouths connected with the oil inlet of brake (b), the C mouths of second solenoid directional control valve (4) connect with drain tap (L2).
2. lifting hydraulic system according to claim 1, it is characterised in that the lifting hydraulic system also includes：Second
Choke valve (6) and the first check valve (7), the oil-feed of the first hydraulic fluid port and first check valve (7) of the second throttle (6)
C mouth of the mouth with second solenoid directional control valve (4) connects, the second hydraulic fluid port of the second throttle (6) and first list
Connected to oil inlet of the oil-out with the brake (b) of valve (7), the second hydraulic fluid port of the second throttle (6) also with
Drain tap (L2) connection.
3. lifting hydraulic system according to claim 2, it is characterised in that the lifting hydraulic system also includes：3rd
Choke valve (8), the oil inlet of the 3rd choke valve (8) connect with the C mouths of second solenoid directional control valve (4), and the described 3rd
The oil-out of choke valve (8) connects with the drain tap (L2).
4. lifting hydraulic system according to claim 1, it is characterised in that the first oil inlet of first shuttle valve (2)
It is communicated with the first pressure measuring tie-in (12).
5. lifting hydraulic system according to claim 1, it is characterised in that the second oil inlet of first shuttle valve (2)
It is communicated with the second pressure measuring tie-in (13).
6. lifting hydraulic system according to claim 1, it is characterised in that the lifting hydraulic system also includes：Second
Shuttle valve (9) and first pressure sensor (10), the first oil inlet of second shuttle valve (9) connect with the A mouths of the motor (a)
Logical, the second oil inlet of second shuttle valve (9) connects with the B mouths of the motor (a), the oil-out of second shuttle valve (9)
Connected with the first pressure sensor (10).
7. lifting hydraulic system according to claim 6, it is characterised in that the first oil inlet of second shuttle valve (9)
It is communicated with the 3rd pressure measuring tie-in (14).
8. lifting hydraulic system according to claim 6, it is characterised in that the second oil inlet of second shuttle valve (9)
It is communicated with the 4th pressure measuring tie-in (15).
9. lifting hydraulic system according to claim 1, it is characterised in that the second pressure is provided with the brake (b)
Force snesor (11).
10. lifting hydraulic system according to claim 1, it is characterised in that first solenoid directional control valve (3) and described
Second solenoid directional control valve (4) is two-bit triplet solenoid directional control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610334611.9A CN105927601B (en) | 2016-05-19 | 2016-05-19 | One kind lifting hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610334611.9A CN105927601B (en) | 2016-05-19 | 2016-05-19 | One kind lifting hydraulic system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105927601A CN105927601A (en) | 2016-09-07 |
| CN105927601B true CN105927601B (en) | 2018-01-26 |
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ID=56840884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610334611.9A Active CN105927601B (en) | 2016-05-19 | 2016-05-19 | One kind lifting hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105927601B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638533B (en) * | 2016-09-30 | 2019-03-05 | 江苏恒立液压科技有限公司 | Ocean platform seawater column jacking system |
| CN107524661B (en) * | 2017-08-25 | 2019-07-23 | 武汉船用机械有限责任公司 | A kind of hydraulic system of rack-and-pinion lifting device |
| CN111608982B (en) * | 2020-04-07 | 2023-01-17 | 武汉船用机械有限责任公司 | Hydraulic system of lifting platform |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2186610B1 (en) * | 1972-05-23 | 1975-08-29 | Verlinde Sa | |
| JPS55135202A (en) * | 1979-04-05 | 1980-10-21 | Hitachi Constr Mach Co Ltd | Driving circuit for hydraulically operated construction vehicle |
| JP3736657B2 (en) * | 1997-04-25 | 2006-01-18 | 株式会社小松製作所 | Hydraulic motor drive system |
| CN201321358Y (en) * | 2008-11-25 | 2009-10-07 | 徐州重型机械有限公司 | Crane hoist control system and crane |
| CN202612232U (en) * | 2012-06-05 | 2012-12-19 | 郑州正弘桩工机械制造有限公司 | Hydraulic motor driving device and long spiral drilling machine main winch adopting same |
| CN103058085B (en) * | 2012-12-28 | 2015-10-14 | 三一重工股份有限公司 | System system and rotary drilling rig |
| CN104692254B (en) * | 2013-12-04 | 2017-01-11 | 北汽福田汽车股份有限公司 | Crane secondary ascension downslide prevention system |
| CN204079348U (en) * | 2014-06-30 | 2015-01-07 | 武汉船用机械有限责任公司 | A kind of electrohydraulic proportional control valve group for hydraulic wireline winch |
-
2016
- 2016-05-19 CN CN201610334611.9A patent/CN105927601B/en active Active
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| CN105927601A (en) | 2016-09-07 |
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