CN102549272A - Hydraulic control system - Google Patents
Hydraulic control system Download PDFInfo
- Publication number
- CN102549272A CN102549272A CN2010800435770A CN201080043577A CN102549272A CN 102549272 A CN102549272 A CN 102549272A CN 2010800435770 A CN2010800435770 A CN 2010800435770A CN 201080043577 A CN201080043577 A CN 201080043577A CN 102549272 A CN102549272 A CN 102549272A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- pump
- control device
- accumulator
- hydraulic control
- 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.)
- Granted
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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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/027—Installations or systems with accumulators having accumulator charging devices
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
- F04B49/03—Stopping, starting, unloading or idling control by means of valves
Abstract
The invention relates to a hydraulic control system, comprising a pressure accumulator (4), which is filled by means of an accumulator charging valve (16) using an electrically driven pump (10). The accumulator charging valve is connected between the pump and the pressure accumulator. The invention is characterized in that a hydraulic relief device (18), which hydraulically relieves the pump during starting, is connected downstream of the pump.
Description
Technical field
The present invention relates to a kind of hydraulic control device with accumulator, said accumulator utilizes power-actuated pump to fill via the storage charge valve, and said storage charge valve is connected between said pump and the accumulator.The invention still further relates to a kind of hydraulic system with this hydraulic control device.
Background technique
Said hydraulic control device also can be called the storage loading system.Said storage charge valve can be embodied as safety check, stops undesirable hydraulic medium to reflux and flows to pump or flow to the chest with hydraulic medium from accumulator.In power-actuated pump; Drive the employed motor of said pump when connecting; Also promptly when said pump startup; Must not only make to be in static quality acceleration, and overcome the hydraulic pressure load, said hydraulic pressure load is mainly obtained by the restricted opening pressure of storage static pressure and storage charge valve.
Summary of the invention
Task of the present invention is, in the manufacture cost of said pump and/or energy consumption especially in improvement aspect the said pump startup according to the hydraulic control device of claim 1 preamble.
In a kind of hydraulic control device with accumulator; Said accumulator utilizes power-actuated pump to fill via the storage charge valve; Said storage charge valve is connected between said pump and the accumulator; Said task solves like this, makes said pump be connected hydraulic pressure discharge mechanism downstream, and said pump is unloaded with hydraulic way by said hydraulic pressure discharge mechanism when starting.Under framework of the present invention, the synthetic load torque of said pump can not ignore because of mass inertia with respect to detent torque.Said synthetic load torque can need produce high motor current and damage the startup of said pump when pump drives.Through discharge mechanism according to the present invention, the said hydraulic load that when pump startup, overcomes through motor obviously reduces.Driving said pump motor can design than littler in general hydraulic control device.In addition, aspect current drain, obtain not damage the advantage of the power character of hydraulic control device.Hydraulic control device according to the present invention is preferred for controlling speed changer.
A preferred embodiment of said hydraulic control device is characterised in that, said hydraulic pressure discharge mechanism is designed to make said pump starting hour unloading of revolution.Said hydraulic pressure discharge mechanism is preferred only to work in the very short endurance when said pump startup.Behind little pump startup revolution, the effect of said hydraulic pressure discharge mechanism can save or cut off.
Another preferred embodiment of said hydraulic control device is characterised in that said hydraulic pressure discharge mechanism is designed to make said pump when starting, to be transferred breakout pressure, and said breakout pressure is significantly less than the pressure in accumulator, especially goes up normal operating pressure.Thus, the starting characteristic of obviously improving said motor is especially considered said current drain and power character when pump operation.
The another embodiment of said hydraulic control device is characterised in that said hydraulic pressure discharge mechanism comprises the hydraulic starting capacity, and it is connected between said storage charge valve and the accumulator.Hydraulic volume is called as the hydraulic pressure capacity, for example can change through moving of piston.Accurately be squeezed in the hydraulic pressure capacity and be meant scaling factor, it is obtained by the ratio between compressed fluid flow and the rate of pressure change.
The another preferred embodiment of said hydraulic control device is characterised in that said hydraulic starting capacity comprises spring-loaded piston, low-voltage memory, film, disc spring and/or hydraulic hose.Said hydraulic pressure capacity can for example be described through a cylinder body of filling with hydraulic medium, and the volume of said cylinder body defines through said spring-loaded piston, film or hydraulic hose.
The another preferred embodiment of said hydraulic control device is characterised in that said hydraulic pressure discharge mechanism comprises starter gate valve, and said starter gate valve is connected between said pump and the accumulator.Through said starter gate valve, said pump presses the mode of perhaps little flowed friction to be connected with said chest with temporary transient nothing when starting.
The another preferred embodiment of said hydraulic control device is characterised in that said starter gate valve and storage charge valve are combined into startup-storage-charge valve device.Satisfy the function of general storage charge valve on the one hand according to startup of the present invention-storage charge valve device.In addition, can make said pump overcome breakout pressure according to startup of the present invention-storage charge valve and start, said breakout pressure is significantly less than in the accumulator reservoir pressure separately.
The another preferred embodiment of said hydraulic control device is characterised in that; Said startup-storage charge valve device is embodied as the two-bit triplet selector valve; Said two-bit triplet selector valve has an interface that is used for said pump, an interface and an interface that is used for the chest of said hydraulic medium that is used for said accumulator.In first on positi of said two-bit triplet selector valve, connection interruption between said pump and the accumulator and the connection between said pump and the chest discharge, thereby in fact said pump is not carried there to be the mode of pressing.In second on positi of said two-bit triplet selector valve, said pump is connected with accumulator, and is connected interruption between said pump and the chest.
The another preferred embodiment of said hydraulic control device is characterised in that said hydraulic pressure discharge mechanism is embodied as the bypass valve of differential pressure control.Said bypass valve can diaphragm have pressure loss or little pressure loss ground obtains small volume stream via measuring.
The invention still further relates to a kind of hydraulic system with this hydraulic control device, be used to control speed changer, said hydraulic system preferably is embodied as stepless adjustable conical disc and surrounds speed changer.The invention still further relates to a kind of method that is used to control this speed changer.
Description of drawings
Obtain other advantages of the present invention, characteristic and details from following description, describe different embodiments in detail with reference to accompanying drawing in the following description.In the accompanying drawings:
Fig. 1 illustrates the hydraulic system with hydraulic control device that comprises additional capacity according to first embodiment;
Fig. 2 illustrates has startup-the similar hydraulic system as shown in Figure 1 of storage charge valve device, and said hydraulic system is embodied as selector valve;
Fig. 3 illustrates similar hydraulic system as shown in Figure 2, and wherein, said startup-storage charge valve is embodied as the bypass valve of differential pressure control.
Embodiment
In Fig. 1 to 3, show to have a hydraulic control device 2 with the mode of hydraulic circuit diagram respectively according to three different embodiments; 22; 32 hydraulic system 1; 21; 31.Identical part is represented with identical reference character.Hydraulic control device 2; 22; 32 comprise accumulator 4, and accumulator 4 is connected on the customer 5.Customer 5 for example is at least one adjusting cylinder body that stepless adjustable conical disc is surrounded speed changer.
In the described embodiment of Fig. 1, the storage charge valve 16 that is embodied as safety check is connected between pump 10 and the accumulator 4.Storage charge valve 16 can not only flow through and stop undesirable backflow of hydraulic medium to flow to the outlet of pump 10 from accumulator 4 or customer 5 on flow direction.
According to a basic sides of the present invention, hydraulic pressure discharge mechanism 18 is connected between the outlet and storage charge valve 16 of pump 10, and hydraulic pressure discharge mechanism 18 is embodied as hydraulic starting capacity 19 in the embodiment shown in fig. 1.Hydraulic starting capacity 19 comprises an additional hydraulic medium volume, and it for example defines through spring-loaded piston, film, disc spring or hydraulic hose.Hydraulic starting capacity 19 can also be embodied as low-voltage memory, and it is called the air pressure storage with piston or capsule.
In embodiment illustrated in fig. 2, startup-storage charge valve 26 is connected between pump 10 and the accumulator 4.Startup-storage charge valve 26 is embodied as the two-bit triplet selector valve 27 with three interfaces and two on positis.Two-bit triplet selector valve 27 comprises first interface that is used for pump 10, is used for second interface and the 3rd interface that is used for chest 14 of accumulator 4.The control of two-bit triplet selector valve 27 is preferably carried out with electromagnetic mode.
In the on positi of two-bit triplet selector valve 27 shown in Figure 2, pump 10 is connected with chest 14 via additional unloading conduit 29.Through two-bit triplet selector valve 27 and additional unloading conduit 29, hydraulic pressure discharge mechanism 28 is connected, and hydraulic pressure discharge mechanism 28 can almost not have pressure or do not have the ground of pressure primer pump 10.After primer pump 10, two-bit triplet selector valve 27 is transferred to second on positi that does not show, in second on positi, the outlet of pump 10 is connected with accumulator 4.
In the embodiment shown in fig. 3, hydraulic pressure discharge mechanism 38 is connected between the outlet and storage charge valve 16 of pump 10.Hydraulic pressure discharge mechanism 38 comprises bypass valve 39, and bypass valve 39 is connected with chest 14 via by-pass conduit 40.Bypass valve 39 is controlled via control conduit 41.Diaphragm 42 is measured in bypass valve 39 series connection, and the very little volume flow that measurement diaphragm 42 allows to have little pressure loss gets into the chests 14 from pump 10, obviously improves the starting characteristic of pump 10 thus.
Be in operation; Hydraulic control device 32 can make very little volume flow not or have a measurement diaphragm 42 that little pressure loss ground flows through bypass valve 39; Close to wiper seal before measuring diaphragm 42 bypass valve 39; Wherein, the volume flow of being carried by pump 10 is carried on the direction of storage charge valve 16.
Reference numerals list
1 hydraulic system
2 hydraulic control devices
4 accumulators
5 customers
8 connecting ducts
10 pumps
12 motor
14 chests
16 storage charge valves
18 hydraulic pressure discharge mechanisms
19 hydraulic starting capacity
21 hydraulic systems
22 hydraulic control devices
26 startup-storage charge valves
27 two-bit triplet selector valves
28 hydraulic pressure unloading stout man
29 discharge mechanisms
31 hydraulic systems
32 hydraulic control devices
38 hydraulic pressure discharge mechanisms
39 bypass valve
40 by-pass conduits
41 control conduits
42 measure diaphragm
Claims (10)
1. hydraulic control device with accumulator (4), said accumulator utilize power-actuated pump (10) to fill via storage charge valve (16), and said storage charge valve is connected between said pump (10) and the accumulator (4), it is characterized in that,
Said pump (10) is connected hydraulic pressure discharge mechanism (18; 28; Hydraulic pressure unloaded said pump (10) when 38) downstream, said hydraulic pressure discharge mechanism started at said pump (10).
2. hydraulic control device according to claim 1 is characterized in that,
Said hydraulic pressure discharge mechanism (18; 28; 38) be designed to make said pump when at least one starts revolution, to be unloaded.
3. according to any described hydraulic control device in the aforementioned claim, it is characterized in that,
Said hydraulic pressure discharge mechanism (18; 28; 38) be designed to make said pump (10) when starting, to overcome and be transferred breakout pressure, said breakout pressure is significantly less than the pressure in the said accumulator (4).
4. according to any described hydraulic control device in the aforementioned claim, it is characterized in that,
Said hydraulic pressure discharge mechanism (18) comprises hydraulic starting capacity (19), and it is connected between said storage charge valve (16) and the accumulator (4).
5. according to any described hydraulic control device in the aforementioned claim, it is characterized in that,
Said hydraulic starting capacity (19) comprises spring-loaded piston, low-voltage memory, film, disc spring and/or hydraulic hose.
6. according to any described hydraulic control device in the aforementioned claim, it is characterized in that,
Said hydraulic pressure discharge mechanism (28) comprises starter gate valve, and it is connected between said pump (10) and the accumulator (4).
7. hydraulic control device according to claim 6 is characterized in that,
Startup-storage charge valve device (26) is claimed in said starter gate valve and the combination of storage charge valve.
8. hydraulic control device according to claim 7 is characterized in that,
Said startup-storage charge valve device (26) is embodied as two-bit triplet selector valve (27); Said two-bit triplet selector valve (27) has an interface that is used for pump (10), and one is used for the interface of accumulator (4) and the interface of the chest (14) that is used for hydraulic medium.
9. according to any described hydraulic control device in the claim 1 to 6, it is characterized in that,
Said hydraulic pressure discharge mechanism (38) is embodied as the bypass valve (39) of differential pressure control.
A hydraulic system its have according to any described hydraulic control device (2 in the aforementioned claim; 22; 32).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009043647.2 | 2009-09-29 | ||
| DE102009043647 | 2009-09-29 | ||
| PCT/DE2010/001033 WO2011038706A1 (en) | 2009-09-29 | 2010-09-02 | Hydraulic control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102549272A true CN102549272A (en) | 2012-07-04 |
| CN102549272B CN102549272B (en) | 2015-11-25 |
Family
ID=43357146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080043577.0A Expired - Fee Related CN102549272B (en) | 2009-09-29 | 2010-09-02 | Hydraulic control device |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102549272B (en) |
| DE (2) | DE102010036166A1 (en) |
| WO (1) | WO2011038706A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949102A (en) * | 2017-02-17 | 2017-07-14 | 成都捷冠科技有限公司 | A kind of hydraulic energy-accumulating equipment processed for lightgage steel joist |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017217552A1 (en) * | 2017-10-02 | 2019-04-04 | Deere & Company | Hydraulic arrangement |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5989802A (en) * | 1982-11-12 | 1984-05-24 | Hitachi Ltd | Liquid pressure generator |
| EP0363279A2 (en) * | 1988-10-04 | 1990-04-11 | Automobiles Peugeot | Security system for an electric pump |
| CN2072546U (en) * | 1990-07-10 | 1991-03-06 | 李建启 | Hydraulic shovel slewing system with reclaiming brake energy |
| GB2296046A (en) * | 1994-10-18 | 1996-06-19 | Automotive Products Plc | Hydraulic actuation system for vehicle clutches |
| CN201095777Y (en) * | 2007-01-23 | 2008-08-06 | 浙江工业大学 | Hydraulic device for balancing internal combustion engine output torque |
-
2010
- 2010-09-02 DE DE102010036166A patent/DE102010036166A1/en not_active Withdrawn
- 2010-09-02 DE DE112010003851T patent/DE112010003851A5/en not_active Withdrawn
- 2010-09-02 CN CN201080043577.0A patent/CN102549272B/en not_active Expired - Fee Related
- 2010-09-02 WO PCT/DE2010/001033 patent/WO2011038706A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5989802A (en) * | 1982-11-12 | 1984-05-24 | Hitachi Ltd | Liquid pressure generator |
| EP0363279A2 (en) * | 1988-10-04 | 1990-04-11 | Automobiles Peugeot | Security system for an electric pump |
| CN2072546U (en) * | 1990-07-10 | 1991-03-06 | 李建启 | Hydraulic shovel slewing system with reclaiming brake energy |
| GB2296046A (en) * | 1994-10-18 | 1996-06-19 | Automotive Products Plc | Hydraulic actuation system for vehicle clutches |
| CN201095777Y (en) * | 2007-01-23 | 2008-08-06 | 浙江工业大学 | Hydraulic device for balancing internal combustion engine output torque |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949102A (en) * | 2017-02-17 | 2017-07-14 | 成都捷冠科技有限公司 | A kind of hydraulic energy-accumulating equipment processed for lightgage steel joist |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112010003851A5 (en) | 2012-09-06 |
| CN102549272B (en) | 2015-11-25 |
| WO2011038706A1 (en) | 2011-04-07 |
| DE102010036166A1 (en) | 2011-03-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20190902 |