CN102549272B - Hydraulic control device - Google Patents
Hydraulic control device Download PDFInfo
- Publication number
- CN102549272B CN102549272B CN201080043577.0A CN201080043577A CN102549272B CN 102549272 B CN102549272 B CN 102549272B CN 201080043577 A CN201080043577 A CN 201080043577A CN 102549272 B CN102549272 B CN 102549272B
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- pump
- control device
- accumulator
- valve
- 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.)
- Expired - Fee Related
Links
- 230000007246 mechanism Effects 0.000 claims description 27
- 239000007858 starting material Substances 0.000 claims description 7
- 239000002775 capsule Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 3
- 210000000038 chest Anatomy 0.000 description 12
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to a hydraulic control device having an accumulator (4) which is filled by means of an electrically driven pump (10) via a reservoir charging valve (16). The reservoir charging valve is connected between the pump and an accumulator. The invention is characterized in that a hydraulic unloading device (18) is connected downstream of the pump, said hydraulic unloading device hydraulically unloading the pump during the starting process.
Description
Technical field
The present invention relates to a kind of hydraulic control device with accumulator, described accumulator utilizes power-actuated pump to fill via storage charge valve, and described storage charge valve is connected between described pump and accumulator.The invention still further relates to a kind of hydraulic system with this hydraulic control device.
Background technique
Described hydraulic control device also can be called storage loading system.Described storage charge valve can be embodied as safety check, stops the backflow of undesirable hydraulic medium to flow to pump from accumulator or flow to and has the chest of hydraulic medium.In power-actuated pump, the motor driving described pump to use is when connecting, also namely when described pump startup, not only must make to be in static quality to accelerate, and overcoming hydraulic pressure load, described hydraulic pressure load obtains primarily of the restricted opening pressure of storage static pressure and storage charge valve.
Summary of the invention
Task of the present invention is, the manufacture cost of described pump and/or energy ezpenditure especially in described pump startup improvement according to the hydraulic control device of claim 1 preamble.
Have in the hydraulic control device of accumulator a kind of, described accumulator utilizes power-actuated pump to fill via storage charge valve, described storage charge valve is connected between described pump and accumulator, described task solves like this, make described pump be connected to hydraulic pressure discharge mechanism downstream, described pump is unloaded with hydraulic way by described hydraulic pressure discharge mechanism when starting.Under framework of the present invention, the synthesis load torque of described pump be can not ignore because of mass inertia relative to detent torque.The load torque of described synthesis can need when pump drives to produce high motor current and the startup damaging described pump.By discharge mechanism according to the present invention, the described hydraulic load overcome by motor when pump startup is obviously reduced.Drive described pump motor to design than less in general hydraulic control device.In addition, in current drain, obtain the advantage not damaging the power character of hydraulic control device.Hydraulic control device according to the present invention is preferred for controlled variator.
The feature of a preferred embodiment of described hydraulic control device is, described hydraulic pressure discharge mechanism is designed to make the unloading when starting revolution and being minimum of described pump.Described hydraulic pressure discharge mechanism preferably only works in the very short endurance when described pump startup.After little pump startup revolution, the effect of described hydraulic pressure discharge mechanism can save or cut off.
The feature of another preferred embodiment of described hydraulic control device is, described hydraulic pressure discharge mechanism is designed to make described pump be transferred breakout pressure when starting, and described breakout pressure is significantly less than the pressure in accumulator, especially goes up normal operating pressure.Thus, the starting characteristic obviously improving described motor, when pump operation, especially considers described current drain and power character.
The feature of the another embodiment of described hydraulic control device is, described hydraulic pressure discharge mechanism comprises hydraulic starting capacity, and it is connected between described storage charge valve and accumulator.Hydraulic volume is called as hydraulic capacity, such as, can be changed by the movement of piston.Accurately be squeezed in hydraulic capacity and refer to scaling factor, it is obtained by the ratio between compressed fluid flow and rate of pressure change.
The feature of the another preferred embodiment of described hydraulic control device is, described hydraulic starting capacity comprises spring-loaded piston, low-voltage memory, film, disc spring and/or hydraulic hose.Described hydraulic capacity can such as be described with the cylinder body that hydraulic medium is filled by one, and the volume of described cylinder body is defined by described spring-loaded piston, film or hydraulic hose.
The feature of the another preferred embodiment of described hydraulic control device is, described hydraulic pressure discharge mechanism comprises starter gate valve, and described starter gate valve is connected between described pump and accumulator.By described starter gate valve, described pump is connected with described chest in the mode of temporarily with no pressure or little flowed friction when starting.
The feature of the another preferred embodiment of described hydraulic control device is, described starter gate valve and storage charge valve are combined into and start-storage-charge valve device.The function of general storage charge valve is met on the one hand according to startup of the present invention-storage charge valve device.In addition, described pump can be made to overcome breakout pressure according to startup of the present invention-storage charge valve and start, described breakout pressure is significantly less than reservoir pressure respective in accumulator.
The feature of the another preferred embodiment of described hydraulic control device is, described startup-storage charge valve device is embodied as two-bit triplet selector valve, described two-bit triplet selector valve has an interface for described pump, an interface for described accumulator and an interface for the chest of described hydraulic medium.In the first on positi of described two-bit triplet selector valve, the disconnecting between described pump and accumulator and Connection Release between described pump and chest, thus in fact described pump is carried in mode with no pressure.In the second on positi of described two-bit triplet selector valve, described pump is connected with accumulator, and the disconnecting between described pump and chest.
The feature of the another preferred embodiment of described hydraulic control device is, described hydraulic pressure discharge mechanism is embodied as the bypass valve that differential pressure controls.Described bypass valve can obtain small volume stream via measurement diaphragm without pressure loss or little pressure loss.
The invention still further relates to a kind of hydraulic system with this hydraulic control device, for controlled variator, described hydraulic system is preferably embodied as stepless adjustable conical disc and surrounds speed changer.The invention still further relates to a kind of method for controlling this speed changer.
Accompanying drawing explanation
Obtain other advantages of the present invention, characteristic sum details from description below, describe different embodiment 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 comprising additional capacity according to the first embodiment;
Fig. 2 illustrates the similar hydraulic system as shown in Figure 1 with startup-storage charge valve device, and described hydraulic system is embodied as selector valve;
Fig. 3 illustrates similar hydraulic system as shown in Figure 2, and wherein, described startup-storage charge valve is embodied as the bypass valve that differential pressure controls.
Embodiment
Show in the mode of hydraulic circuit diagram respectively in Fig. 1 to 3, according to three different embodiments, there is hydraulic control device 2; 22; The hydraulic system 1 of 32; 21; 31.The identical reference character of identical part represents.Hydraulic control device 2; 22; 32 comprise accumulator 4, and accumulator 4 is connected on customer 5.Customer 5 is such as at least one adjustment cylinder body that stepless adjustable conical disc surrounds speed changer.
Accumulator 4 is filled from chest 14 hydraulic medium by means of pump 10 via connecting duct 8, and pump 10 is by motor machine, and especially motor 12 drives.Hydraulic medium is such as hydraulic oil, is applied with external pressure or with no pressure in chest 14.
In the embodiment illustrated in fig. 1, the storage charge valve 16 being embodied as safety check is connected between pump 10 and accumulator 4.Storage charge valve 16 not only can flow through in the flowing direction and stop undesirable backflow of hydraulic medium to flow to the outlet of pump 10 from accumulator 4 or customer 5.
According to a basic sides of the present invention, hydraulic pressure discharge mechanism 18 is connected between the outlet of pump 10 and storage charge valve 16, 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 is such as defined by 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 the embodiment depicted in figure 2, startup-storage charge valve 26 is connected between pump 10 and 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 the first interface for pump 10, the second interface for accumulator 4 and the 3rd interface for chest 14.The control of two-bit triplet selector valve 27 is preferably carried out with electromagnetic mode.
In the on positi of the two-bit triplet selector valve 27 shown in Fig. 2, pump 10 is connected with chest 14 via additional unloading conduit 29.By 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 be almost with no pressure or start pump 10 without pressure.After startup pump 10, two-bit triplet selector valve 27 is transferred to the second on positi do not shown, and in the 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 of pump 10 and storage charge valve 16.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 controls via control conduit 41.Bypass valve 39 is connected and is measured diaphragm 42, measures diaphragm 42 and allows the very little volume flow with little pressure loss to enter chest 14 from pump 10, obviously improve the starting characteristic of pump 10 thus.
Be in operation, hydraulic control device 32 can make very little volume flow not or flow through the measurement diaphragm 42 of bypass valve 39 with having little pressure loss, close bypass valve 39 to wiper seal before measuring diaphragm 42, wherein, the volume flow 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 conduit
42 measure diaphragm
Claims (9)
1. one kind has the hydraulic control device of accumulator (4), described accumulator utilizes power-actuated pump (10) to fill via storage charge valve (16), described storage charge valve is connected between described pump (10) and accumulator (4), it is characterized in that
Hydraulic pressure discharge mechanism is connected to the downstream of described pump (10), described hydraulic pressure discharge mechanism is connected between the outlet of described pump (10) and described storage charge valve (16), and described hydraulic pressure discharge mechanism hydraulic pressure when described pump (10) starts unloads described pump (10); Described hydraulic pressure discharge mechanism is embodied as the bypass valve (39) that differential pressure controls, and diaphragm (42) is measured in bypass valve series connection.
2. hydraulic control device according to claim 1, is characterized in that,
Described hydraulic pressure discharge mechanism is designed to make described pump unloaded when at least one starts revolution.
3. the hydraulic control device according to any one in aforementioned claim, is characterized in that,
Described hydraulic pressure discharge mechanism is designed to that described pump (10) is overcome when starting and is transferred breakout pressure, and described breakout pressure is significantly less than the pressure in described accumulator (4).
4. the hydraulic control device according to aforementioned claim 1 or 2, is characterized in that,
Described hydraulic pressure discharge mechanism comprises hydraulic starting capacity (19), and hydraulic starting capacity is connected between described storage charge valve (16) and accumulator (4).
5., according to aforementioned hydraulic control device according to claim 4, it is characterized in that,
Described hydraulic starting capacity (19) comprises an additional hydraulic medium volume, and hydraulic medium volume is defined by spring-loaded piston, film, disc spring and/or hydraulic hose; Or
Described hydraulic starting capacity (19) is low-voltage memory, and low-voltage memory is the air pressure storage with piston or capsule.
6., according to the hydraulic control device in aforementioned claim described in 1 or 2, it is characterized in that,
Described hydraulic pressure discharge mechanism comprises starter gate valve, and starter gate valve is connected between described pump (10) and accumulator (4).
7. hydraulic control device according to claim 6, is characterized in that,
Described starter gate valve and storage charge valve combine and claim to start-storage charge valve device.
8. hydraulic control device according to claim 7, is characterized in that,
Described startup-storage charge valve device is embodied as two-bit triplet selector valve (27), described two-bit triplet selector valve (27) has an interface for pump (10), the interface of an interface for accumulator (4) and a chest for hydraulic medium (14).
9. a hydraulic system, it has the hydraulic control device according to any one in aforementioned claim.
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 CN102549272A (en) | 2012-07-04 |
| CN102549272B true 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) |
Families Citing this family (2)
| 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 |
| 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 | hydraulic 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 | hydraulic 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112010003851A5 (en) | 2012-09-06 |
| DE102010036166A1 (en) | 2011-03-31 |
| WO2011038706A1 (en) | 2011-04-07 |
| CN102549272A (en) | 2012-07-04 |
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| 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 |
Granted publication date: 20151125 Termination date: 20190902 |
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| CF01 | Termination of patent right due to non-payment of annual fee |