CN101408154A - Hydraulic cylinder-controlled oblique tray type plunger hydraulic transformer - Google Patents
Hydraulic cylinder-controlled oblique tray type plunger hydraulic transformer Download PDFInfo
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- CN101408154A CN101408154A CNA2008101375220A CN200810137522A CN101408154A CN 101408154 A CN101408154 A CN 101408154A CN A2008101375220 A CNA2008101375220 A CN A2008101375220A CN 200810137522 A CN200810137522 A CN 200810137522A CN 101408154 A CN101408154 A CN 101408154A
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- 230000007704 transition Effects 0.000 claims abstract description 25
- 238000006073 displacement reaction Methods 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 94
- 230000009466 transformation Effects 0.000 description 11
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
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Abstract
The invention discloses a hydraulic cylinder controlled swash plate type plunger hydraulic transformer and relates to a swash plate type piston hydraulic transformer, aiming at solving the problems that the manually controlled hydraulic transformer can not control the flow and the pressure accurately and the electricity-controlled quantitative type hydraulic transformer can not realize displacement regulation. A rear port plate is fixedly connected with a front port plate; the rear port plate is processed with a gear; a rack is arranged inside a hydraulic cylinder and is fixedly connected with a piston; the rack is meshed with the teeth on the rear port plate; a main axis penetrates the transition block of an oil circuit and then is fixedly arranged in the rear port plate; a high-pressure oil hole on the transition block of the oil circuit is communicated with a high pressure oil circuit on the front port plate by a high-pressure oil duct on the main axis and a high-pressure channel on the rear port plate; a load oil hole on the transition block of the oil circuit is communicated with a load oil circuit on the front port plate by a load channel on the rear port plate; and the oil hole of an oil sump tank on the transition block of the oil circuit is communicated with the oil circuit of the oil sump tank on the front port plate by the channel of the oil sump tank on the rear port plate. The hydraulic transformer can accurately control the flow and pressure and achieve displacement regulation.
Description
Technical field
The present invention relates to a kind of oblique tray type plunger hydraulic transformer, belong to technical field of hydraulic elements.
Background technique
The hydraulic constant pressure network secondary regulation technology that development in recent years is got up has improved the flexibility and the efficient of hydraulic system, and many advantages are arranged on the secondary Principles of Regulation, but when driving the straight line load, traditional method is realized by throttling control.Because there is bigger pressure difference in throttling control, so this control mode has been brought bigger energy loss.How with the energy of constant pressure network gear-shift transmission as power transformer, machinery, with sending out of variable pressure noenergy loss, Here it is technical background that hydraulic transformer produces.
Traditional hydraulic transformer is with oil hydraulic motor and the direct coaxial connection of oil hydraulic pump, by the discharge capacity of regulator solution pressure motor, incoming pressure is become the pressure that load needs, and realizes pressure change.Because of this transformer is with being linked together of oil hydraulic pump and motor machinery, thereby volume and weight is big, and the adjusting power that needs is also bigger, the cost height, and efficient is low, has influenced its application.
At Achten P A J.hydraulic transformer.WO97/31185,1997 (Achten P A J hydraulic transformer, patent No. WO97/31185,1997); Achten P A J.Apparatus for executingactivities assisted by hydromotorst and a hydraulid transformer for use in such anapparaturs.WO99/40318,12August 1999 (the equipment that Achten P A J oil hydraulic motor and hydraulic transformer are used, patent No. WO99/40318, on August 12nd, 1999); Endsley, John has proposed a kind of new hydraulic transformer structural design in c.Hydraulic pressure transformer.WO 00/28211,18 May 2000 (Endsley, John, c, the hydraulic pressure transducer) patent.It assembles one with the function of oil hydraulic motor and hydraulic transformer, is called the novel hydraulic transformer.Compare with traditional hydraulic transformer, the novel hydraulic transformer gathers the function of oil hydraulic pump and oil hydraulic motor, has formed independently hydraulic element, has simplified its structural type, and its advantage is as follows:
1, can realize not having the transformation of restriction loss; 2, the transformation process is reversible, both can export energy, also can recovered energy; 3, volume is little, and dynamic response is fast, can realize the change of pressure by the angle of swing that changes thrust plate.Although hydraulic transformer has many advantages, hydraulic transformer be developed into the hydraulic element of a practicality, also to solve many problems.It is little that the designed hydraulic transformer of above patent exists the transformation ratio scope, and noise is big during operation, and volume is big, shortcomings such as complex structure.Can make the no restriction loss of hydraulic actuator (constant displacement hydraulic motor, oil hydraulic cylinder) ground from the hydraulic constant pressure network system, obtain energy by hydraulic transformer.If can in engineering machinery, be widely used, will be very promising pressure conversion element.
Present novel hydraulic transformer is mainly manual control hydraulic transformer, this hydraulic transformer passes to driving gear by hand lever with moment of torsion, make the driving gear rotation, and by with thrust plate on the engagement of gearwheel control the angle of swing of hydraulic transformer thrust plate, thereby realize transformation.Because manually control is unfavorable for system's realization automation and flow and pressure is accurately controlled, and has therefore occurred automatically controlled quantitative hydraulic transformer again, and has adopted this kind hydraulic transformer, can't realize the adjusting of discharge capacity.
Summary of the invention
The purpose of this invention is to provide a kind of hydraulic cylinder-controlled oblique tray type plunger hydraulic transformer, exist and be unfavorable for that system realizes automation and flow and pressure are accurately controlled to solve manual control hydraulic transformer, and automatically controlled quantitative hydraulic transformer can't be realized the problem that discharge capacity is regulated.
The present invention solves the problems of the technologies described above the technological scheme of taking to be: hydraulic transformer of the present invention comprises front thrust plate, hydraulic transformer shell, oil circuit transition block, bearing, bearing support, end cap and main shaft; Described hydraulic transformer also comprises rear thrust plate, hydraulic jack and tooth bar, described rear thrust plate is contained in the hydraulic transformer shell, the minor diameter end face of described rear thrust plate is affixed with the front thrust plate that is arranged on the hydraulic transformer shell outside, along the circumferential direction be processed with tooth on the outer wall of major diameter end face one side of rear thrust plate, described hydraulic jack is made up of hydraulic cylinder and two pistons, described tooth bar is contained in the hydraulic cylinder, the two ends of tooth bar are affixed with two pistons that are contained in the hydraulic cylinder, tooth engagement on tooth bar and the rear thrust plate, described hydraulic cylinder is packed in the hydraulic transformer shell, one end of described main shaft passes in the center shoulder screw that the oil circuit transition block is contained in rear thrust plate and with rear thrust plate and is threaded, the other end of main shaft is contained on the end cap, be contained on the main shaft in the bearing support bearing is housed, one end of bearing support and oil circuit transition block are pegged graft, the other end and the end cap of bearing support are affixed, be respectively arranged with the high pressure oilhole on the described oil circuit transition block, load oilhole and oil sump tank oilhole, described main shaft is provided with high-pressure oil duct, the inlet of described high-pressure oil duct is arranged on the sidewall of main shaft, the center line of the outlet of described high pressure oilhole is arranged on the central cross-section of inlet of high-pressure oil duct, be respectively equipped with high-pressure channel on the rear thrust plate, load channel and oil sump tank passage, be respectively equipped with high-pressure oil passage on the front thrust plate, load oil circuit and oil sump tank oil circuit, the high pressure oilhole communicates with high-pressure oil passage by high-pressure oil duct and high-pressure channel, the load oilhole communicates with the load oil circuit by load channel, and the oil sump tank oilhole communicates with the oil sump tank oil circuit by the oil sump tank passage.
The invention has the beneficial effects as follows: 1, the present invention is a body structure with inclined disc type Variable plunger pump A4V (prior art), for hydraulic transformer being realized the control of pressure, on its body structure, its flow-distribution mechanism is designed, designed the control mechanism (be oil hydraulic cylinder, tooth bar and on rear thrust plate, be processed with tooth) of rear thrust plate and oil hydraulic cylinder control thrust plate corner, made the transformation scope of hydraulic transformer wideer.This hydraulic transformer can be controlled its flow and two variablees of pressure, and this is the remarkable advantage of hydraulic transformer of the present invention, and its application performance is significantly improved.2, the present invention controls forward and backward thrust plate corner by the engagement of tooth on tooth bar and the rear thrust plate.The hydraulic pressure transformation ratio is exactly the pressure ratio between load channel pressure and the high-pressure channel (being the hydraulic constant pressure network system), because the transformation ratio of hydraulic transformer is unique function of hydraulic transformer controlled angle, so the controlled angle of hydraulic transformer has also just determined the hydraulic pressure transformation ratio.3, the present invention adopts oil hydraulic cylinder control.For controlling the corner of forward and backward thrust plate, on the outer side wall of rear thrust plate, be processed with tooth, tooth on the rear thrust plate and the tooth bar engagement that is contained in the hydraulic cylinder, determine the displacement of oil hydraulic cylinder by the number of teeth of the number of teeth on the calculating rear thrust plate and tooth bar, the corner and the rotating speed of control rear thrust plate, thereby the speed of response of the transformation ratio of control transformer and system.4,, control the inclination angle of swash plate by the displacement of control oil hydraulic cylinder, thereby controlled pump delivery because the A4V swash plate plunger pump is a variable displacement pump.Among the present invention the coherence of discharge capacity and transformation ratio is studied, in this transformer, realized the related control of two variablees of pressure and discharge capacity.5, the present invention adopts the driving source of oil hydraulic cylinder as the hydraulic transformer rear thrust plate, easy to operate, accurately control when realizing pressure and flow, and the energy-conservation and recyclable utilization of energy, improved the application performance of hydraulic transformer, for the application of widening hydraulic transformer is laid a good foundation.Therefore, hydraulic transformer of the present invention is particularly suitable for as the pressure conversion element that drives the straight line load in the hydraulic constant pressure network system.
Description of drawings
Fig. 1 is overall structure master's sectional view of hydraulic cylinder-controlled oblique tray type plunger hydraulic transformer of the present invention, Fig. 2 is the left view of front thrust plate 1, Fig. 3 is the left view of rear thrust plate 8, Fig. 4 is the right elevation of rear thrust plate 8, Fig. 5 is the E-E sectional view of Fig. 3, Fig. 6 is the D-D sectional view of Fig. 4, Fig. 7 is the left view of oil circuit transition block 3, Fig. 8 is the sectional view of the longitudinal section, high pressure oilhole A1 place of oil circuit transition block 3, Fig. 9 is the load oilhole B1 of oil circuit transition block 3 and the sectional view of longitudinal section, oil sump tank oilhole C1 place, and Figure 10 is the structural representation that hydraulic jack 9 and tooth bar 10 are assembled together.
Embodiment
Embodiment one: in conjunction with Fig. 1～Figure 10 present embodiment is described, the hydraulic transformer of present embodiment comprises front thrust plate 1, hydraulic transformer shell 2, oil circuit transition block 3, bearing 4, bearing support 5, end cap 6 and main shaft 7; Described hydraulic transformer also comprises rear thrust plate 8, hydraulic jack 9 and tooth bar 10, described rear thrust plate 8 is contained in the hydraulic transformer shell 2, the minor diameter end face 8-1 of described rear thrust plate 8 is affixed by pin with the front thrust plate 1 that is arranged on hydraulic transformer shell 2 outsides, along the circumferential direction be processed with tooth on the outer wall of major diameter end face 8-5 one side of rear thrust plate 8, described hydraulic jack 9 is made up of hydraulic cylinder 9-1 and two piston 9-2, described tooth bar 10 is contained in the hydraulic cylinder 9-1, the two ends of tooth bar 10 are affixed with two piston 9-2 that are contained in the hydraulic cylinder 9-1, tooth engagement on tooth bar 10 and the rear thrust plate 8, described hydraulic cylinder 9-1 is packed in the hydraulic transformer shell 2, one end of described main shaft 7 passes in the center shoulder screw 8-2 that oil circuit transition block 3 is contained in rear thrust plate 8 and with rear thrust plate 8 and is threaded, the other end of main shaft 7 is contained on the end cap 6, be contained on the main shaft 7 in the bearing support 5 bearing 4 is housed, one end of bearing support 5 and oil circuit transition block 3 are pegged graft, the other end of bearing support 5 and end cap 6 are affixed, be respectively arranged with high pressure oilhole A1 on the described oil circuit transition block 3, load oilhole B 1 and oil sump tank oilhole C1, described main shaft 7 is provided with high-pressure oil duct A2, the inlet 7-1 of described high-pressure oil duct A2 is arranged on the sidewall of main shaft 7, the center line of the outlet 3-2 of described high pressure oilhole A1 is arranged on the central cross-section of inlet 7-1 of high-pressure oil duct A2, be respectively equipped with high-pressure channel A3 on the rear thrust plate 8, load channel B3 and oil sump tank channel C 3, be respectively equipped with high-pressure oil passage A4 on the front thrust plate 1, load oil circuit B4 and oil sump tank oil circuit C4, high pressure oilhole A1 communicates with high-pressure oil passage A4 by high-pressure oil duct A2 and high-pressure channel A3, load oilhole B1 communicates with load oil circuit B4 by load channel B3, and oil sump tank oilhole C1 communicates with oil sump tank oil circuit C4 by oil sump tank channel C 3.Mesh the corner of adjusting rear thrust plate by being contained in the tooth bar 10 in the hydraulic jack 6 and the tooth of rear thrust plate 8 peripheries, thereby formed the control mechanism of rear thrust plate 8 jointly.Be connected for ease of pipeline, designed oil circuit transition block 5 with the constant pressure network system.
Embodiment two: present embodiment is described in conjunction with Fig. 1, Fig. 8 and Fig. 9, the high pressure oilhole A1 of the oil circuit transition block 3 of present embodiment is the high pressure oilhole that tilts to rear thrust plate 8 directions, and the load oilhole B1 of described oil circuit transition block 3 and oil sump tank oilhole C1 are L shaped shape.Other composition and annexation are identical with embodiment one.
Embodiment three: present embodiment is described in conjunction with Fig. 5 and Fig. 6, high-pressure channel A3 on the rear thrust plate 8 of present embodiment, load channel B3 and oil sump tank channel C 3 are by axially straight passage 8-3 and access ramp 8-4 form, described axial straight passage 8-3 is positioned on the minor diameter end face 8-1 of rear thrust plate 8, is convenient to output oil.Other composition and annexation are identical with embodiment one.
Embodiment four: present embodiment is described in conjunction with Fig. 2 and Fig. 3, the shape of cross section of the high-pressure channel A3 on the rear thrust plate 8 of present embodiment, load channel B3 and oil sump tank channel C 3 is waist shape, and the shape of cross section of the high-pressure oil passage A4 on the described front thrust plate 1, load oil circuit B4 and oil sump tank oil circuit C4 is waist shape.Be convenient to output oil, improve oil extraction efficient.Other composition and annexation are identical with embodiment one.
Embodiment five: present embodiment is described in conjunction with Fig. 5 and Fig. 6, the inlet of high-pressure channel A3 on the rear thrust plate 8 of present embodiment is arranged on the central axis of major diameter end face 8-5 of rear thrust plate 8, the inlet of load channel B3 on the rear thrust plate 8 and the inlet of oil sump tank channel C 3 outwards are crisscross arranged on the major diameter end face 8-5 of rear thrust plate 8 by the center, and the outlet of the outlet of the high-pressure channel A3 on the rear thrust plate 8, the outlet of load channel B3 and oil sump tank channel C 3 is arranged on the same center circle on the minor diameter end face 8-1 of rear thrust plate 8.Under the situation of high-pressure channel A3, load channel B3 on the assurance rear thrust plate 8 and oil sump tank channel C 3 flows, for reducing the radial dimension of rear thrust plate 8, the inlet of the load channel B3 of rear thrust plate 8, the inlet of oil sump tank channel C 3 are distributed on the different circumference of its end face.Other composition and annexation are identical with embodiment one or three.
Working principle: when hydraulic transformer inserts constant pressure network, high pressure oilhole A1, load oilhole B1 on the oil circuit transition block 3 and oil sump tank oilhole C1 are inserted high-pressure oil passage, load and fuel tank in the constant pressure network system respectively.Under the effect of system pressure, make cylinder body 11 produce running torques and rotate, simultaneously, owing on the rear thrust plate 8 three passages are arranged, three oil circuits are arranged, on the front thrust plate 1 by the oil of joining of rear thrust plate 8 and front thrust plate 1, part hydraulic oil drives load to the load fuel feeding.By the equation of continuity of fluid, the flow algebraic sum of three passages and three oil circuits is zero, decides oil sump tank oilhole C1, oil sump tank channel C 3 and the mobile direction of the hydraulic oil of oil sump tank oil circuit C4.According to law of conservation of energy, the pressure of high pressure oilhole A1, high-pressure oil duct A2, high-pressure channel A3, high-pressure oil passage A4 and load oilhole B1, load channel B3, load oil circuit B4 and oil sump tank oilhole C1, oil sump tank channel C 3, oil sump tank oil circuit C4 is zero with the product algebraic sum of flow separately respectively.The corner of rear thrust plate by the control hydraulic transformer; it is the flow of three passages of may command rear thrust plate 8; usually two passages of pressure and all the other of oil sump tank channel C 3 are compared very low; therefore the pressure of oil sump tank channel C 3 and the product of flow are ignored; then there are the pressure of high-pressure channel A3 and the product of flow to add that the pressure of load channel B3 and the product of flow are zero; hence one can see that, and the pressure ratio of the pressure of load channel B3 and high-pressure channel A3 equals the flow of high-pressure channel A3 and the flow ratio of load channel B3.The hydraulic transformer transformation ratio is to realize according to the change that the size of the load controlled angle by the control hydraulic transformer promptly changes three channel capacities of rear thrust plate.
Claims (4)
1, a kind of hydraulic cylinder-controlled oblique tray type plunger hydraulic transformer, described hydraulic transformer comprise front thrust plate (1), hydraulic transformer shell (2), oil circuit transition block (3), bearing (4), bearing support (5), end cap (6) and main shaft (7); It is characterized in that: described hydraulic transformer also comprises rear thrust plate (8), hydraulic jack (9) and tooth bar (10), described rear thrust plate (8) is contained in the hydraulic transformer shell (2), the minor diameter end face (8-1) of described rear thrust plate (8) is affixed with the front thrust plate (1) that is arranged on hydraulic transformer shell (2) outside, along the circumferential direction be processed with tooth on the outer wall of major diameter end face (8-5) side of rear thrust plate (8), described hydraulic jack (9) is made up of hydraulic cylinder (9-1) and two pistons (9-2), described tooth bar (10) is contained in the hydraulic cylinder (9-1), the two ends of tooth bar (10) are affixed with two pistons (9-2) that are contained in the hydraulic cylinder (9-1), tooth engagement on tooth bar (10) and the rear thrust plate (8), described hydraulic cylinder (9-1) is packed in the hydraulic transformer shell (2), one end of described main shaft (7) passes in the center shoulder screw (8-2) that oil circuit transition block (3) is contained in rear thrust plate (8) and with rear thrust plate (8) and is threaded, the other end of main shaft (7) is contained on the end cap (6), be contained on the main shaft (7) in the bearing support (5) bearing (4) is housed, one end of bearing support (5) and oil circuit transition block (3) are pegged graft, the other end of bearing support (5) and end cap (6) are affixed, be respectively arranged with high pressure oilhole (A1) on the described oil circuit transition block (3), load oilhole (B1) and oil sump tank oilhole (C1), described main shaft (7) is provided with high-pressure oil duct (A2), the inlet (7-1) of described high-pressure oil duct (A2) is arranged on the sidewall of main shaft (7), the center line of the outlet (3-2) of described high pressure oilhole (A1) is arranged on the central cross-section of inlet (7-1) of high-pressure oil duct (A2), be respectively equipped with high-pressure channel (A3) on the rear thrust plate (8), load channel (B3) and oil sump tank passage (C3), be respectively equipped with high-pressure oil passage (A4) on the front thrust plate (1), load oil circuit (B4) and oil sump tank oil circuit (C4), high pressure oilhole (A1) communicates with high-pressure oil passage (A4) by high-pressure oil duct (A2) and high-pressure channel (A3), load oilhole (B1) communicates with load oil circuit (B4) by load channel (B3), and oil sump tank oilhole (C1) communicates with oil sump tank oil circuit (C4) by oil sump tank passage (C3).
2, hydraulic cylinder-controlled oblique tray type plunger hydraulic transformer according to claim 1, it is characterized in that: the high pressure oilhole of the high pressure oilhole (A1) of described oil circuit transition block (3) for tilting to rear thrust plate (8) direction, load oilhole of described oil circuit transition block (3) (B 1) and oil sump tank oilhole (C1) are L shaped shape.
3, hydraulic cylinder-controlled oblique tray type plunger hydraulic transformer according to claim 1, it is characterized in that: the high-pressure channel (A3) on the described rear thrust plate (8), load channel (B3) and oil sump tank passage (C3) are formed by axial straight passage (8-3) and access ramp (8-4), and described axial straight passage (8-3) is positioned on the minor diameter end face (8-1) of rear thrust plate (8).
4, according to claim 1 or 3 described hydraulic cylinder-controlled oblique tray type plunger hydraulic transformers, it is characterized in that: the inlet of the high-pressure channel (A3) on the described rear thrust plate (8) is arranged on the central axis of major diameter end face (8-5) of rear thrust plate (8), the inlet of the load channel (B3) on the rear thrust plate (8) and the inlet of oil sump tank passage (C3) outwards are crisscross arranged on the major diameter end face (8-5) of rear thrust plate (8) by the center, the outlet of the high-pressure channel (A3) on the rear thrust plate (8), the outlet of the outlet of load channel (B3) and oil sump tank passage (C3) is arranged on the same center circle on the minor diameter end face (8-1) of rear thrust plate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101375220A CN101408154B (en) | 2008-11-13 | 2008-11-13 | Hydraulic cylinder-controlled oblique tray type plunger hydraulic transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101375220A CN101408154B (en) | 2008-11-13 | 2008-11-13 | Hydraulic cylinder-controlled oblique tray type plunger hydraulic transformer |
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| Publication Number | Publication Date |
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| CN101408154A true CN101408154A (en) | 2009-04-15 |
| CN101408154B CN101408154B (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101375220A Expired - Fee Related CN101408154B (en) | 2008-11-13 | 2008-11-13 | Hydraulic cylinder-controlled oblique tray type plunger hydraulic transformer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434504A (en) * | 2011-12-09 | 2012-05-02 | 哈尔滨工业大学 | Hydraulic transformer with axial flow distribution |
| CN102788010A (en) * | 2012-08-10 | 2012-11-21 | 中国船舶重工集团公司第七一九研究所 | Tilting tray plunger type hydraulic transformer controlled by oscillating oil cylinder |
| CN102829034A (en) * | 2012-09-12 | 2012-12-19 | 哈尔滨工业大学 | Variable hydraulic transformer controlled single-pole hydraulic cylinder system and control method |
| CN111911481A (en) * | 2020-08-14 | 2020-11-10 | 燕山大学 | Integrated electro-hydraulic actuator adopting rotary oil distribution mode |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6092455A (en) * | 1998-11-06 | 2000-07-25 | Caterpillar Inc. | Hydraulic pressure transformer |
| CN1187531C (en) * | 2003-06-02 | 2005-02-02 | 浙江大学 | Hydraulic transformer |
| CN1587698A (en) * | 2004-08-22 | 2005-03-02 | 浙江大学 | Hydraulic transformer of broad voltage regulation range |
-
2008
- 2008-11-13 CN CN2008101375220A patent/CN101408154B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434504A (en) * | 2011-12-09 | 2012-05-02 | 哈尔滨工业大学 | Hydraulic transformer with axial flow distribution |
| CN102434504B (en) * | 2011-12-09 | 2014-02-12 | 哈尔滨工业大学 | Hydraulic transformer with axial flow distribution |
| CN102788010A (en) * | 2012-08-10 | 2012-11-21 | 中国船舶重工集团公司第七一九研究所 | Tilting tray plunger type hydraulic transformer controlled by oscillating oil cylinder |
| CN102788010B (en) * | 2012-08-10 | 2015-11-18 | 中国船舶重工集团公司第七一九研究所 | The swash plate plunger type hydraulic transformer that a kind of oscillating oil cylinder controls |
| CN102829034A (en) * | 2012-09-12 | 2012-12-19 | 哈尔滨工业大学 | Variable hydraulic transformer controlled single-pole hydraulic cylinder system and control method |
| CN102829034B (en) * | 2012-09-12 | 2014-12-10 | 哈尔滨工业大学 | Variable hydraulic transformer controlled single-pole hydraulic cylinder system and control method |
| CN111911481A (en) * | 2020-08-14 | 2020-11-10 | 燕山大学 | Integrated electro-hydraulic actuator adopting rotary oil distribution mode |
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| Publication number | Publication date |
|---|---|
| CN101408154B (en) | 2010-06-23 |
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Effective date of registration: 20180507 Address after: 510000 room 340, C 340, Shi Huan Road, Tianhe District, Guangzhou, Guangdong. Patentee after: Harbin robotics group (Guangzhou) intellectual property Klc Holdings Ltd. Address before: 150001 vice 434, postal street, Nangang District, Harbin, Heilongjiang. Patentee before: Harbin Institute of Technology National University Science Park Development Co.,Ltd. |
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Effective date of registration: 20180726 Address after: 150000 Dalian Road North and Xingkai Road, Harbin, Heilongjiang province. Patentee after: Hagongda robot group (Harbin) Asset Management Co.,Ltd. Address before: 510000 room 340, C 340, Shi Huan Road, Tianhe District, Guangzhou, Guangdong. Patentee before: Harbin robotics group (Guangzhou) intellectual property Klc Holdings Ltd. |
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Effective date of registration: 20190613 Address after: Room 306, Building A, Building 3, Building 11, Courtyard 8, Liangshuihe Second Street, Daxing District, Beijing Patentee after: BEIJING HIT ROBOT CO.,LTD. Address before: 150000 Dalian Road North and Xingkai Road, Harbin, Heilongjiang province. Patentee before: Hagongda robot group (Harbin) Asset Management Co.,Ltd. |
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Effective date of registration: 20191016 Address after: Room 501, entrepreneurial service center, Chengdong Industrial Park, Shuangshan street, Zhangqiu District, Jinan City, Shandong Province Patentee after: Harbin University of technology robot group (Shandong) Co.,Ltd. Address before: Room 306, Building A, Building 3, Building 11, Courtyard 8, Liangshuihe Second Street, Daxing District, Beijing Patentee before: BEIJING HIT ROBOT CO.,LTD. |
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Granted publication date: 20100623 |
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