CN105697358A - Method for operating hydrostatic driving unit - Google Patents
Method for operating hydrostatic driving unit Download PDFInfo
- Publication number
- CN105697358A CN105697358A CN201511036074.1A CN201511036074A CN105697358A CN 105697358 A CN105697358 A CN 105697358A CN 201511036074 A CN201511036074 A CN 201511036074A CN 105697358 A CN105697358 A CN 105697358A
- Authority
- CN
- China
- Prior art keywords
- housing
- leakage rate
- piston
- adjustment
- hydrostatic drives
- 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.)
- Pending
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Classifications
-
- 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
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
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- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
-
- 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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/26—Control
- F04B1/30—Control of machines or pumps with rotary cylinder blocks
- F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
- F04B1/324—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
-
- 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
- F04B49/002—Hydraulic systems to change the pump delivery
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention relates to a method for operating a hydrostatic driving unit, comprising a housing (102) and an adjustment device (121) that is associated with a regulating valve (50). At least one working piston (110) which is acted upon a working pressure, and at least one actuating piston (123) which is acted upon by a adjusting pressure, are disposed in the housing (102). In order to simplify the cooling of the hydrostatic driving unit, a leakage quantity is generated via the regulating valve (50) and is supplied to the housing (102) for cooling purposes.
Description
Technical field
The present invention relates to a kind of method for running hydrostatic drives (Hydrostaten), described hydrostatic drives has: housing, arranges that at least one is loaded the working piston of an operating pressure and at least one is loaded the regulating piston of an adjustment pressure in described housing；With regulate device, to described adjustment device configure one adjustment valve。The present invention is directed to if desired to be had the hydrostatic drives of computer program, controls device or adjust valve, described computer program includes computer program, when running this computer program on computers, described computer program has the software module for implementing preceding method。
Background technology
By the known hydrostatic machine also referred to as hydrostatic drives of International Publication file WO2014/026791A1, described hydrostatic machine is embodied as the axial piston machine with at least one working piston and a regulating piston, at least one working piston described and a regulating piston concur with swing seat (Schwenkwiege), and described swing seat can be regulated by adjustment valve。
Summary of the invention
The task of the present invention is, simplifies the cooling of hydrostatic drives, and described hydrostatic drives has: housing, arranges that at least one is loaded the working piston of an operating pressure and at least one is loaded the regulating piston of an adjustment pressure in described housing；With adjustment device, one adjusts valve is attached to described adjustment device。
This task so solves when being used for running the method for hydrostatic drives that (described hydrostatic drives has: housing, arranges that at least one is loaded the working piston of an operating pressure and at least one is loaded the regulating piston of an adjustment pressure in described housing；With regulate device, to described adjustment device configure one adjustment valve。), producing a leakage rate by described adjustment valve, described leakage rate is supplied to the housing of described hydrostatic drives to cool down purpose。Target in usual hydrostatic application is to reduce undesirable leakage。On the other hand, according to a main aspect of the invention, deliberately producing leakage rate, described leakage rate is used to cooling purpose。Hydrostatic drives, also referred to as hydrostatic machine, it will be preferred that in the axial piston machine of oblique disk structure mode, and it has swash plate or swing seat, and described swash plate or swing seat are to regulate device。By this adjustment device, especially swing seat, the volume flow that scalable is such as carried by hydrostatic drives。The internal cooling of described hydrostatic drives can be improved with method in a straightforward manner by the leakage rate according to the present invention。The method according to the invention particularly advantageously works in the critical running status of function of the heat of described hydrostatic drives, described running status such as can be used in hydrostatic running driving device at described hydrostatic drives (such as in the hydraulic-driven system of motor vehicles or in hydraulic hybrid drivetrain) occur。When described hydrostatic drives in high-revolving situation, there is no discharge pressure or with little discharge pressure to run time, or, when using described hydrostatic drives when little rotating speed or minimum speed, during for keeping specific pressure, can especially improve the cooling of described hydrostatic drives by the leakage rate according to the present invention。In these critical operation states described, can overheated by means of what adjust that the cooling that carries out of leakage rate that valve produces avoids rubbing to (such as between working piston and corresponding piston bushing or cylinder) by according to the present invention。Thus can extend the life-span of described hydrostatic drives。
One preferred embodiment of described method is characterized by, by described adjustment valve with clearly defined objective affect described leakage rate the size of size and described leakage rate be used to derive the heat of driving mechanism from housing。By deriving the mode of leakage rate by adjusting valve, improve the Volume Loss of emerged in operation at described hydrostatic drives only unimportantly。
Another preferred embodiment of described method is characterized by, regulates the size of described leakage rate according to cooling requirement。Therefore ensuring that, the operating efficiency of described hydrostatic drives does not have or only unimportant reduces。
Another preferred embodiment of described method is characterized by, senses the temperature in described housing, wherein, uses, in adjusting loop, the temperature recorded, in order to adjust the temperature in described housing by leakage rate。Temperature in housing such as can sense by the temperature sensor that this enclosure interior is suitable。
Another preferred embodiment of described method is characterized by, estimates that the trend of the temperature in described housing is for setting up adjustment loop。Carry out the estimation of temperature in housing with being preferably based on model。
Another preferred embodiment of described method is characterized by, considers the adjustment by leakage rate of the temperature in described housing in the control device of described hydrostatic drives。Thus can in a straightforward manner with method and the operation optimizing described hydrostatic drives with minimum Volume Loss。
Another preferred embodiment of described method is characterized by, the piston sliding component (Kolbenschieber) of described adjustment valve is loaded a vibration, is used for producing leakage rate。Described adjustment valve is preferably implemented as longitudinal guiding valve with straight skidding part, and described straight skidding part is also referred to as piston sliding component。Described straight skidding part or piston sliding component, for instance by armature, moved back and forth between different switching positions or position by electromagnet。Described switching position according to straight skidding part or piston sliding component or position, the different joints of described adjustment valve are connected with each other。By described vibration, it is similar to when so-called shake (Dithering), changes switching position or the position of described piston sliding component with clearly defined objectively, for producing the leakage rate according to the present invention。This word shake (Dithering) or shake (Dither) are the English concepts of shake (Zittern)。In image procossing, such as use shake。
Another preferred embodiment of described method is characterized by, changes jitter parameter with clearly defined objectively, such as the frequency of vibration and/or the amplitude of piston sliding component, in order to regulate the size of leakage rate according to cooling requirement。Thus, the adjustment quality of described adjustment valve can be improved。Can prevent due to the operating fricative undesirable stick-slip effect (Stick-Slip-Effekte) of described adjustment valve。Additionally, the operating undesirable delayed of described adjustment valve can be reduced。In order to produce the oscillating stroke of piston sliding component, such as it is loaded this vibration for the electric current being energized to the solenoid of described adjustment valve。Vibration during energising is acted on the described piston sliding component adjusting valve by magnetic force and armature。In order to produce leakage rate, it is preferable that described piston sliding component is placed in oscillating movement。Described leakage rate is for cooling purposes。The leakage rate produced by described adjustment valve is such as arrived by the control rib on described piston sliding component in the housing of described hydrostatic drives。
The invention still further relates to a kind of computer program, it has computer program, and described computer program has the software module implementing preceding method when running this computer program on computers。This computer program is such as deposited or is stored in the control device for described hydrostatic drives or control equipment。
The present invention also relates to that there is the hydrostatic drives of this computer program, control device or adjustment valve。Described hydrostatic drives, control device or adjustment valve can individually be concluded the business。Adjust three position three-way change valve (3/3-Wegeventil) or two-bit triplet reversal valve that valve works preferably as proportioning valve。
Described hydrostatic drives is preferably additional to primary driver element (such as internal combustion engine) and is arranged in moveable fluid pressure drive device。Described moveable fluid pressure drive device is preferably placed in the hydraulic hybrid drivetrain of hybrid power means of transport。Described hybrid power means of transport is such as passenger car or commercial car。
Other advantages of the present invention, feature and details are learnt by description below, and different embodiment is described in detail with reference to the accompanying drawings in described explanation。
Accompanying drawing explanation
Accompanying drawing illustrates:
Fig. 1 has the simplification diagram of the hydraulic hybrid drivetrain of the motor vehicles of two hydrostatic machines；
Fig. 2 illustrates the hydrostatic machine being embodied as axial piston machine with sectional side elevation, and it has adjustment valve；
Fig. 3 illustrates the adjustment valve in Fig. 2 with sectional side elevation, and this sectional side elevation has for illustrating the arrow and four-headed arrow illustrating the method according to the invention。
Detailed description of the invention
Simplify in fig. 1 and the hydraulic hybrid drivetrain 1 with the powered motor vehicles taking turns 2 is shown。Powered take turns 2 such as by differential mechanism 3 by driving in the way of be connected in hydraulic hybrid drivetrain 1。Hydraulic hybrid drivetrain 1 includes primary driving device 4, and described primary driving device such as has the internal combustion engine 6 also referred to as explosive motor。Wheel 2 can drive separately through primary driving device 4。
Hydraulic hybrid drivetrain 1 includes secondary drive device 10 in addition。Secondary drive device 10 includes the first hydraulic press 11 and the second hydraulic press 12。Said two hydraulic press 11 and 12 is connected with low-pressure side 13 in a hydrodynamic manner also referred to as hydrostatic machine and at input side。Low-pressure side 13 includes the low-voltage memory 14 with hydraulic medium, and described hydraulic medium is loaded low pressure。
On the output side, hydraulic press 11 and 12 is connected with high-pressure side 16 in a hydrodynamic manner。High-pressure side 16 includes the high-pressure storage 17 with hydraulic medium, and described hydraulic medium is loaded high pressure。By total of six rectangle 18 labelling valve gear, described valve gear can realize the operation with the secondary drive device 10 of two hydraulic presses 11 and 12。
Variator 20 is linked between primary driving device 4 and secondary drive device 10。Variator 20 is embodied as the planetary transmission with hollow wheel 30, sun gear 32 and planetary gear 34。Planetary gear 34 is arranged on planet bearing part 35 in revolvable mode。
First axle 21 does not carry 35 with planet with the relative rotation by gear stage and is connected。First axle 21 is not connected with differential mechanism 3 with the relative rotation by another gear stage on the end on its right in FIG。
Second axle 22 is not connected with the hollow wheel 30 of planetary transmission 20 with the relative rotation。The mode that second axle 22 can drive is connected with primary driving device 4。3rd axle 23 is not connected with the sun gear 32 of planetary transmission 20 with the relative rotation。
Clutch apparatus and/or synchronizer 27 on slave end to be linked into the second hydraulic press 12 of secondary drive 10 in the way of driving and to take turns between the differential mechanism 3 of 2 with powered。At this, in order to constitute additional function, for instance reverse gear, other speed change levels can be accessed between clutch apparatus and/or synchronizer 27 and differential mechanism 3。
Hydraulic hybrid drivetrain 1 is the drivetrain of mechanical-hydraulic power dividing。Depending on operating point, by also referred to as the primary driving device 4 of mechanical actuation device or by importing the power of hydraulic hybrid drivetrain 1 also referred to as the secondary drive device 10 of fluid pressure drive device。In addition, it is possible to import described power by two driving devices 4,10 or system branch simultaneously。Being likely to occur following running status, in described running status, each components of system as directed is nonactivated maybe must to be deactivated。
The hydraulic press 11 and 12 only symbolically illustrated in FIG also referred to as hydrostatic drives and is preferably implemented as axial piston machine。It is explained below the 26S Proteasome Structure and Function of axial piston machine。
Hydrostatic axial piston machine shown in figure 2 is axial poiston pump and has driving mechanism 101, and described driving mechanism is arranged in housing 102。In order to load in housing 102 by driving mechanism 101, housing 102 is opened on one end。This end opened is closed by lid 103 after driving mechanism 101 is mounted in housing 102。Lid 103 arranges unshowned pipe joint。
Driving mechanism 101 has the cylinder barrel 105 driving axle 104 and not being connected with the relative rotation with this driving axle。Cylinder barrel 105 is rotatably arranged in housing 102 together with driving axle 104。
For this, driving axle 104 is bearing in clutch shaft bearing 106 in revolvable mode in an end of housing 102。Arranging the second bearing 107 on that the relative end driving axle 104, described second bearing is arranged in lid 103。Drive axle 104 with the side of end 108 traverse clutch shaft bearing 106 and housing 102。
Cylinder barrel 105 constructs multiple cylinder holes 109 in circumferentially equally distributed mode。Can arrange a working piston 110 in the way of moving in the axial direction in each cylinder holes 109, described working piston is also referred to as piston。Cylinder holes 109 is also commonly referred to as piston acceptance division。
Working piston 110 is connected in movable mode by ball-joint connecting portion 112 with piston shoes 111 on its end highlighted by cylinder holes 109。The piston shoes 111 of working piston 110 are supported on smooth, the ground work surface of swash plate 114 with sliding surface。
Swash plate 114 is configured to swing seat, described swing seat by rotatable or swingable in the way of be arranged in ball bearing。When driving axle 104 to rotate, cylinder barrel 105 also due to the connection that do not rotate against and rotate。Piston shoes 111 are supported on the work surface 113 of swash plate 114 at this and force working piston 110 reciprocating。
In order to prevent piston shoes 111 from lifting from the work surface 113 of swash plate 114 during intake stroke, backhaul plate 115 is set。Backhaul plate 115 is followed the angle of inclination of swash plate 114 and is bearing in ball bearing 116。
It is connected in order to cylinder holes 109 is of short duration with the pipeline of hydrostatic circuit, there is panel 117。Constituting in panel 117 and control opening 118,119, cylinder holes 109 alternately communicates with described control opening during the operating of cylinder barrel 105。
In order to be maintained at panel 117 in the aperture side of cylinder holes 109 with sealing engagement by cylinder barrel 105, compression spring 120 is set in the inside of cylinder barrel 105。Compression spring 120 side is supported on cylinder barrel 105, and in described cylinder barrel, retainer ring is used as the first spring base。Second spring base structure is driving on axle 104 on the opposed side of compression spring 120。
In order to regulate described axial piston pump delivery, adjustment device 121 is set。Regulating device 121 and have the adjustment cylinder 122 being fixedly arranged with housing, regulating piston 123 is parallel to the rotation axis driving axle 104 can be arranged in the way of moving axially on described adjustment cylinder。
Construct and abut on the work surface 113 of swash plate 114 to the spherical arching in end 140 towards swash plate 114 of regulating piston 123。Regulate cylinder 122 to be loaded by hydraulic pressure so that regulating piston 123 applies adjustment power to swash plate 114, in order to regulate the described swash plate gradient relative to the rotation axis 126 driving axle 104。
Regulate device 121 additionally have be fixedly arranged with housing to cylinder pressure 124, pressure piston 125 is parallel to the rotation axis 126 driving axle 104 described in cylinder pressure can be arranged in the way of moving in the axial direction。To pressure piston 125 the same spherical arching in the end 141 towards swash plate 114 construct and abut on the work surface 113 of swash plate 114。
Regulate cylinder 122 and to cylinder pressure 124 about rotation axis 126 contrast opposite each other arrange。
Relative to regulating piston 123, there is smaller cross-sectional area pressure piston 125 is loaded by hydraulic pressure equally so that pressure piston 125 is loaded to swash plate 114。Additionally, pressure piston 125 is yet loaded to swash plate 114 by the compression spring 127 of pretension, the compression spring of described pretension surrounds to cylinder pressure 124 with to pressure piston 125 with having spacing。
Represented by rectangle 50 in fig. 2 and adjust valve, this adjustment valve can be passed through and regulate the swash plate 114 also referred to as swing seat with clearly defined objectively。Adjust valve 50 and be connected with control device 155 in a controlled fashion by controlling circuit 156。Control device 155 for the hydrostatic drives controlling in Fig. 2 and also referred to as the control unit of described hydrostatic drives。
Control device 155 control circuit by another (unshowned) or be contactlessly connected with temperature sensor 158。The temperature within the housing 102 of described hydrostatic drives is sensed by rectangle by the temperature sensor 158 only represented。
The embodiment adjusting valve 50 only represented by rectangle in fig. 2 is shown with sectional side elevation in figure 3。Adjust valve 50 and include valve chest, arrange in described valve chest and be used for two magnets 54,55 constituting at least one solenoid。Described valve chest is surrounded by cover 52 in outside。
By described solenoid or magnet 54,55, the armature 57 in described valve chest can be loaded with magnetic force。Armature 57 mechanically couples with piston sliding component 58, described piston sliding component in adjusting the guiding of valve 50 and connector 60 by (namely in figure 3 to the left and move right) guiding in the way of can moving back and forth。
Guiding and connector 60 have joint 61 to 63。Being represented by arrow 65: joint 61 is received on high pressure, described high pressure is such as provided by suitable hydraulic system (if desired by hydraulic pump)。Represented by four-headed arrow 66: the adjustment pressure that joint 62 regulates the adjustment device (especially regulating cylinder (in Fig. 2 122)) of described hydrostatic drives can be passed through。Represented by arrow 67: the joint 63 of described adjustment valve is attached to the housing of described hydrostatic drives (in Fig. 2 102)。
Represented in figure 3 by four-headed arrow 70, piston sliding component 58 can be placed in the moving back and forth or vibrate of vibration, producing leakage rate for clearly defined objective, described leakage rate is supplied to the housing (in Fig. 2 102) of described hydrostatic drives to cool down purpose by joint 63。Electric current for being energized to magnet 54,55 such as can be loaded a vibration, for producing the piston stroke 70 of vibration。Described leakage rate can be regulated by the frequency of described vibration and/or amplitude。
Claims (10)
1. it is used for running hydrostatic drives (11,12) method, described hydrostatic drives has: a housing (102), arranges that at least one is loaded the working piston of an operating pressure (110) and at least one is loaded the regulating piston (123) of an adjustment pressure in described housing；Device (121) is regulated with one, adjustment valve (50) is configured to described adjustment device, it is characterized in that, a leakage rate is produced by described adjustment valve (50), described leakage rate is supplied to the housing (102) of described hydrostatic drives (11,12) to cool down purpose。
2. the method for claim 1, it is characterized in that, the size of described leakage rate by described adjustment valve (50) with clearly defined objective affect and be used to by the heat of a driving mechanism (101) from described housing (102) derive。
3. the method as described in one of aforementioned claim, it is characterised in that regulate the size of described leakage rate according to cooling requirement。
4. the method as described in one of aforementioned claim, it is characterized in that, sense the temperature in described housing (102), wherein, use, in adjusting loop, the described temperature recorded, in order to adjust the temperature in described housing (102) by described leakage rate。
5. method as claimed in claim 4, it is characterised in that estimate the temperature trend in described housing (102), be used for setting up described adjustment loop。
6. the method as described in claim 4 or 5, it is characterised in that consider the adjustment by described leakage rate of the temperature in described housing (102) in the control device of described hydrostatic drives。
7. the method as described in one of aforementioned claim, it is characterised in that the piston sliding component of described adjustment valve (50) is loaded a vibration, is used for producing described leakage rate。
8. the method as described in one of aforementioned claim, it is characterised in that change jitter parameter, such as the frequency of vibration and/or the amplitude of described piston sliding component, in order to regulate the size of described leakage rate according to cooling requirement with clearly defined objectively。
9. computer program, it has computer program, and described computer program has the software module of enforcement method as described in one of claim 1 to 8 when running described computer program on computers。
10. hydrostatic drives (11,12), control device (155) or adjustment valve (50), have computer program as claimed in claim 9。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014225152.4 | 2014-12-08 | ||
| DE102014225152.4A DE102014225152A1 (en) | 2014-12-08 | 2014-12-08 | Method for operating a hydrostat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105697358A true CN105697358A (en) | 2016-06-22 |
Family
ID=55974309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511036074.1A Pending CN105697358A (en) | 2014-12-08 | 2015-12-08 | Method for operating hydrostatic driving unit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105697358A (en) |
| DE (1) | DE102014225152A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116317307A (en) * | 2023-05-12 | 2023-06-23 | 扬州广润机械有限公司 | Shell of vibrating motor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU964220A1 (en) * | 1979-07-17 | 1982-10-07 | Кировоградский Завод Тракторных Гидроагрегатов Им.Хху Съезда Кпсс | Axial plunger hydraulic machine plunger |
| CN2036215U (en) * | 1988-09-15 | 1989-04-19 | 武汉液压机械厂 | Low-temp. one-way oil-distributing axial plunger pump |
| CN102996387A (en) * | 2011-09-15 | 2013-03-27 | 林德材料处理有限责任公司 | Axial piston machine |
| CN202971072U (en) * | 2012-10-31 | 2013-06-05 | 陕西航天动力高科技股份有限公司 | Inverse proportional electric load-sensitive variable plunger pump |
| CN103261678A (en) * | 2010-12-23 | 2013-08-21 | 罗伯特·博世有限公司 | Hydrostatic piston engine having brake device |
| DE102012214622A1 (en) * | 2012-08-17 | 2014-02-20 | Robert Bosch Gmbh | Actuator and axial piston machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012214626A1 (en) | 2012-08-17 | 2014-02-20 | Robert Bosch Gmbh | Actuator and axial piston machine |
-
2014
- 2014-12-08 DE DE102014225152.4A patent/DE102014225152A1/en not_active Withdrawn
-
2015
- 2015-12-08 CN CN201511036074.1A patent/CN105697358A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU964220A1 (en) * | 1979-07-17 | 1982-10-07 | Кировоградский Завод Тракторных Гидроагрегатов Им.Хху Съезда Кпсс | Axial plunger hydraulic machine plunger |
| CN2036215U (en) * | 1988-09-15 | 1989-04-19 | 武汉液压机械厂 | Low-temp. one-way oil-distributing axial plunger pump |
| CN103261678A (en) * | 2010-12-23 | 2013-08-21 | 罗伯特·博世有限公司 | Hydrostatic piston engine having brake device |
| CN102996387A (en) * | 2011-09-15 | 2013-03-27 | 林德材料处理有限责任公司 | Axial piston machine |
| DE102012214622A1 (en) * | 2012-08-17 | 2014-02-20 | Robert Bosch Gmbh | Actuator and axial piston machine |
| CN202971072U (en) * | 2012-10-31 | 2013-06-05 | 陕西航天动力高科技股份有限公司 | Inverse proportional electric load-sensitive variable plunger pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116317307A (en) * | 2023-05-12 | 2023-06-23 | 扬州广润机械有限公司 | Shell of vibrating motor |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014225152A1 (en) | 2016-06-09 |
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Application publication date: 20160622 |
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