CN112709800A - Hydraulic device for hydraulic transmission of hydraulic torque converter - Google Patents
Hydraulic device for hydraulic transmission of hydraulic torque converter Download PDFInfo
- Publication number
- CN112709800A CN112709800A CN202011599459.XA CN202011599459A CN112709800A CN 112709800 A CN112709800 A CN 112709800A CN 202011599459 A CN202011599459 A CN 202011599459A CN 112709800 A CN112709800 A CN 112709800A
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- Prior art keywords
- hydraulic
- torque converter
- cylinder
- cylinder body
- press
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 27
- 238000007789 sealing Methods 0.000 claims description 33
- 239000007788 liquid Substances 0.000 claims description 30
- 239000012530 fluid Substances 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 5
- 230000006978 adaptation Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H41/00—Rotary fluid gearing of the hydrokinetic type
- F16H41/24—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Actuator (AREA)
Abstract
The invention relates to the field of hydraulic transmission of a hydraulic torque converter, in particular to a hydraulic press for hydraulic transmission of the hydraulic torque converter. The piston rod of one of them pneumatic cylinder is connected with the mounting bracket of treating the erection equipment, and the piston rod of another pneumatic cylinder is connected with torque converter. When the hydraulic press is used specifically, the two hydraulic cylinders work in a matched mode, and driving force is transmitted to the hydraulic torque converter through reciprocating motion. Compared with a primary hydraulic press, the hydraulic press avoids the problems of poor hydraulic operation stability caused by overlong hydraulic cylinders and easy damage of the hydraulic cylinders. Compared with a secondary hydraulic press, the hydraulic press does not need to increase the model of any hydraulic cylinder due to installation factors, reduces the volume and the manufacturing cost, and simultaneously reduces the manufacturing difficulty of the hydraulic press.
Description
Technical Field
The invention relates to the technical field of hydraulic torque converters, in particular to a hydraulic press for hydraulic transmission of a hydraulic torque converter.
Background
In a vehicle such as a loader, the vehicle moves forward and backward through a bulk torque converter and a hydraulic unit connected to the torque converter. In the prior art, most of hydraulic devices connected with a hydraulic torque converter are primary hydraulic devices or secondary hydraulic devices. The primary hydraulic press comprises a hydraulic cylinder, the length value of the hydraulic cylinder is large, the cylinder body and the piston rod of the hydraulic cylinder are inevitably overlong, and the hydraulic operation stability is poor; in addition, the cylinder body and the piston rod are easily damaged due to over-long uneven stress or over-large shearing force. The secondary hydraulic device comprises two hydraulic cylinders, wherein the first hydraulic cylinder is large in size, the second hydraulic cylinder is arranged on a piston rod of the first hydraulic cylinder, and the second hydraulic cylinder is small in size relative to the first hydraulic cylinder due to installation; the second hydraulic cylinder with a smaller type is arranged on the first hydraulic cylinder, and the secondary hydraulic device is larger in overall size and higher in manufacturing cost.
Disclosure of Invention
The invention mainly aims to provide a hydraulic press for hydraulic transmission of a hydraulic torque converter, aiming at solving the problems that: the existing hydraulic device for the hydraulic torque converter is long in primary hydraulic device, easy to damage, large in secondary hydraulic device volume and high in manufacturing cost.
The invention provides a hydraulic press for hydraulic transmission of a hydraulic torque converter, which comprises a hydraulic cylinder assembly and a hydraulic station, wherein the hydraulic cylinder assembly is connected with the hydraulic station. Wherein, the pneumatic cylinder is combination formula pneumatic cylinder, combination formula pneumatic cylinder includes left pneumatic cylinder and right pneumatic cylinder, left side pneumatic cylinder and right pneumatic cylinder include left side cylinder body and right side cylinder body respectively, the left side cylinder body with a base is shared to the right side cylinder body, just the left side cylinder body with the right side cylinder body extends to left side and right side respectively. The left side cylinder body and the right side cylinder body are internally provided with pistons, the two pistons are respectively connected with piston rods, one of the piston rods is connected with a mounting frame of equipment to be mounted, and the other piston rod is connected with the hydraulic torque converter. The mounting rack of the equipment to be mounted is a mounting rack for mounting the hydraulic press.
Preferably, a first liquid flow port and a second liquid flow port are respectively arranged on two sides of the piston; the first and second fluid flow ports are in communication with the hydraulic station through fluid lines, respectively.
Still preferably, the first liquid circulation port is provided on a side of the left cylinder and the right cylinder away from the base, and the second liquid circulation port is provided on a side of the left cylinder and the right cylinder close to the base.
Preferably, the hydraulic station is provided with a first electromagnetic valve and a second electromagnetic valve, the two first liquid circulation ports are connected with the first electromagnetic valve, and the two second liquid circulation ports are connected with the second electromagnetic valve. The hydraulic station is also connected with a controller, and the controller is respectively connected with the first electromagnetic valve and the second electromagnetic valve; the controller is connected with a control member, and a control button is arranged on the control member.
Preferably, the periphery of piston is provided with and is annular seal groove, be provided with the sealing ring in the seal groove, the sealing ring card is gone into in the seal groove, the sealing ring with left side pneumatic cylinder or the inner wall slip butt of right side pneumatic cylinder.
Preferably, the sealing ring is in an annular cylindrical shape, and the diameter of the section of the sealing ring is larger than the depth of the sealing groove.
Preferably, the base comprises an annular support plate, and a bottom plate is arranged in the middle of the annular support plate.
Still preferably, the thickness of the annular support plate is greater than the thickness of the base plate, the thickness of the left cylinder and the thickness of the right cylinder.
Compared with the prior art, the hydraulic press for hydraulic transmission of the hydraulic torque converter provided by the invention has the following beneficial effects:
above-mentioned a hydraulic press for torque converter hydraulic transmission compares with the one-level hydraulic press that is used for torque converter hydraulic transmission, installs two pneumatic cylinders on same base, and two pneumatic cylinders extend to both sides respectively, under the condition that does not improve single pneumatic cylinder length, increase the motion stroke of conventional hydraulic press by one time, can avoid because of the hydraulic pressure operation stability poor that causes the pneumatic cylinder overlength to and the easy problem of damaging of pneumatic cylinder.
Compare with the second grade hydraulic press that is used for torque converter hydraulic drive, a base is shared to two pneumatic cylinders, and extends to both sides respectively, and the pneumatic cylinder of adaptation model can all be chooseed for use to two pneumatic cylinders, need not to improve the model of arbitrary one pneumatic cylinder because of the factor of installation, when reducing the volume, reducing manufacturing cost, has also reduced the manufacturing degree of difficulty of hydraulic press.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
It is to be understood that the drawings in the following description are merely exemplary of the invention and that other drawings may be derived from the structure shown in the drawings by those skilled in the art without the exercise of inventive faculty.
Fig. 1 is a schematic sectional view of a hydraulic unit for hydraulic transmission of a torque converter according to embodiment 1 of the present invention.
Fig. 2 is a sectional view of a combined cylinder used in embodiment 1 of the present invention.
| Reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | Left cylinder | 6 | First liquid flow port |
| 2 | Right cylinder body | 7 | Second |
| 3 | |
8 | |
| 31 | Annular supporting |
9 | |
| 32 | |
10 | Controller |
| 4 | Piston | 11 | First |
| 41 | |
12 | Second electromagnetic valve |
| 42 | |
13 | |
| 5 | Piston rod |
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Example 1
The embodiment provides a hydraulic press for hydraulic transmission of a hydraulic torque converter, which comprises a hydraulic cylinder assembly and a hydraulic station 9, wherein the hydraulic cylinder assembly is connected with the hydraulic station 9, as shown in fig. 1. Wherein, the pneumatic cylinder is combination formula pneumatic cylinder, combination formula pneumatic cylinder includes left pneumatic cylinder and right pneumatic cylinder, left side pneumatic cylinder and right pneumatic cylinder include left side cylinder body 1 and right side cylinder body 2 respectively, left side cylinder body 1 with base 3 of right side cylinder body 2 sharing, just left side cylinder body 1 with right side cylinder body 2 extends to left side and right side respectively. Piston 4 is all provided with in the left side cylinder body 1 with in the right side cylinder body 2, two piston 4 is connected with piston rod 5 respectively, and one of them piston rod 5 is connected with the mounting bracket of treating erection equipment, and the above-mentioned mounting bracket of treating erection equipment looks, i.e. is used for the mounting bracket of the fixed hydraulic press of installation, and in this embodiment, above-mentioned mounting bracket is the frame. The other piston rod 5 of the combined cylinder is connected to the torque converter 8 for transmitting driving force to the torque converter 8.
Above-mentioned a hydraulic press for torque converter hydraulic transmission installs two pneumatic cylinders on same base 3, and two pneumatic cylinders extend to both sides respectively. When specifically using, the piston rod 5 is stretched out respectively to the both sides of two pneumatic cylinders, and two piston rod 5 back of the body motion, and one of them piston rod 5 is connected with the mounting bracket, and another piston rod 5 is connected with torque converter 8, and the flexible motion of two piston rods 5 can be controlled as required to the staff, makes the flexible motion cooperation of two piston rods 5, and then transmits drive power to torque converter 8. When a specific operation worker controls the telescopic rod of one hydraulic cylinder to perform telescopic motion, the speed of the transmitted driving force is low; when the two hydraulic cylinders are controlled to simultaneously perform telescopic motion, the operation of the two hydraulic cylinders is not influenced mutually, and the speed of the transmitted driving force is high. The hydraulic device for hydraulic transmission of the hydraulic torque converter can control the speed of hydraulic transmission by controlling the working quantity of the hydraulic cylinders.
Compared with a primary hydraulic press in the prior art, the hydraulic press for hydraulic transmission of the hydraulic torque converter provided by the embodiment can double the movement stroke of a conventional hydraulic press without increasing the length of a single hydraulic cylinder, and can avoid the problems of poor stability of hydraulic operation caused by overlong hydraulic cylinders and easy damage of the hydraulic cylinders. Compare with the second grade hydraulic press that is used for 8 hydraulic drive of torque converter, base 3 is shared to two pneumatic cylinders, and extends to both sides respectively, and the pneumatic cylinder of adaptation model can all be chooseed for use to two pneumatic cylinders, need not to improve the model of arbitrary one pneumatic cylinder because of the factor of installation, when reducing the volume, reducing manufacturing cost, has also reduced the manufacturing degree of difficulty of hydraulic press.
Specifically, it should be noted that the left hydraulic cylinder and the right hydraulic cylinder should be independent hydraulic devices, a first liquid circulation port 6 and a second liquid circulation port 7 are respectively arranged on two sides of the piston 4, and the first liquid circulation port 6 and the second liquid circulation port 7 are respectively communicated with the hydraulic station 9 through infusion tubes. When the hydraulic cylinder is used specifically, hydraulic oil in the hydraulic station 9 flows in the spaces on two sides of the piston 4 through the oil pump, even if the hydraulic oil enters from one of the first liquid flow port 6 and the second liquid flow port 7 and is discharged from the other flow port, the piston 4 is further moved in the left cylinder body 1 or the right cylinder body 2, the piston 4 drives the piston rod 5 to move, and finally the reciprocating motion of the piston rod 5 is realized.
Specifically, in the hydraulic device for hydraulic transmission of the torque converter, the left cylinder 1 and the right cylinder 2 share one base 3, for this reason, in this embodiment, the left cylinder 1 and the right cylinder 2 are respectively provided with a liquid flow port set, the liquid flow port set includes a first liquid flow port 6 and a second liquid flow port 7, and the first liquid flow port 6 and the second liquid flow port 7 are both disposed on the side walls of the left cylinder 1 and the right cylinder 2, and the first liquid flow port 6 and the second liquid flow port 7 are specifically disposed as follows: first liquid circulation mouth 6 has two, and sets up respectively one side that base 3 was kept away from to left side cylinder body 1 and one side that base 3 was kept away from to right side cylinder body 2, second liquid circulation mouth 7 has two and sets up respectively one side that left side cylinder body 1 is close to base 3 and one side that right side cylinder body 2 is close to base 3.
More specifically, in order to facilitate the control of the left hydraulic cylinder and the right hydraulic cylinder, the hydraulic press for hydraulic transmission of the torque converter further includes an operation and control assembly, the operation and control assembly includes a first electromagnetic valve 11 and a second electromagnetic valve 12, which are disposed on the hydraulic station 9, two of the first fluid communication ports 6 are connected to the first electromagnetic valve 11, and two of the second fluid communication ports 7 are connected to the second electromagnetic valve 12. The hydraulic station 9 is further connected with a controller 10, and the controller 10 is respectively connected with the first electromagnetic valve 11 and the second electromagnetic valve 12; the controller 10 is connected with a control member 13, and the control member 13 is provided with a control button. When the hydraulic cylinder is used by a worker, a control command is sent through the control button, a control signal is sent to the first electromagnetic valve 11 and the second electromagnetic valve 12 through the controller 10, the first electromagnetic valve 11 and the second electromagnetic valve 12 are controlled to be opened or closed through the control signal, and finally the left hydraulic cylinder and the right hydraulic cylinder are controlled.
Specifically, in this embodiment, in order to improve the sealing performance between the piston 4 and the left cylinder 1 or the right cylinder 2, a sealing device is further disposed on the periphery of the piston 4, the sealing device includes a sealing groove 42 disposed on the periphery of the piston 4, the sealing groove 42 is integrally annular, a sealing ring 41 is disposed in the sealing groove 42, the sealing ring 41 is clamped into the sealing groove 42, and a part of the sealing ring 41 extends out of the sealing groove 42, so as to achieve the purpose that the sealing ring 41 is in sliding contact with the inner wall of the left hydraulic cylinder or the right hydraulic cylinder; in the sealing device, the seal ring 41 is attached to the seal groove 42, and the sealing performance of the piston 4 by the seal ring 41 is improved. Preferably, in this embodiment, the sealing ring 41 has an annular cylindrical shape, and the cross-sectional diameter of the sealing ring 41 is larger than the depth of the sealing groove 42, so that the sealing ring 41 partially protrudes out of the sealing groove 42.
Specifically, in the hydraulic press for hydraulic transmission of the hydraulic torque converter, the base 3 is provided with two cylinder bodies, and the stress is large, in this embodiment, the base 3 includes an annular support plate 31, and a bottom plate 32 is arranged in the middle of the annular support plate 31. The annular support plate 31 mainly serves as a support, and the bottom plate 32 is used for separating the two cylinders.
In the specific implementation, because the annular support plate 31 is stressed greatly, the thickness of the annular support plate 31 is higher than the thickness of the bottom plate 32, the thickness of the left cylinder 1 and the thickness of the right cylinder 2, that is, the embodiment improves the mechanical property of the annular support plate 31 by increasing the thickness of the annular support plate 31.
It is to be understood that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention, which is defined by the appended claims and their equivalents, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (8)
1. A hydraulic press for hydraulic transmission of a hydraulic torque converter, the hydraulic press comprising a hydraulic cylinder assembly and a hydraulic station, the hydraulic cylinder assembly being connected to the hydraulic station,
the hydraulic cylinder is a combined hydraulic cylinder, the combined hydraulic cylinder comprises a left hydraulic cylinder and a right hydraulic cylinder, the left hydraulic cylinder and the right hydraulic cylinder respectively comprise a left cylinder body and a right cylinder body, the left cylinder body and the right cylinder body share one base, and the left cylinder body and the right cylinder body respectively extend to the left side and the right side;
the left side cylinder body and the right side cylinder body are internally provided with pistons, the two pistons are respectively connected with piston rods, one of the piston rods is connected with a mounting frame of equipment to be mounted, and the other piston rod is connected with the hydraulic torque converter.
2. The hydraulic press for hydraulic transmission of a torque converter according to claim 1,
a first liquid flow port and a second liquid flow port are respectively arranged on two sides of the piston; the first and second fluid flow ports are in communication with the hydraulic station through fluid lines, respectively.
3. The hydraulic press for a torque converter hydraulic transmission of claim 2,
the first liquid circulation port is arranged on one side, away from the base, of the left cylinder body and the right cylinder body, and the second liquid circulation port is arranged on one side, close to the base, of the left cylinder body and the right cylinder body.
4. Hydraulic unit for the hydraulic transmission of a hydrodynamic torque converter, according to claim 2 or 3,
a first electromagnetic valve and a second electromagnetic valve are installed on the hydraulic station, two first liquid circulation ports are connected with the first electromagnetic valve, and two second liquid circulation ports are connected with the second electromagnetic valve;
the hydraulic station is also connected with a controller, and the controller is respectively connected with the first electromagnetic valve and the second electromagnetic valve; the controller is connected with a control member, and a control button is arranged on the control member.
5. The hydraulic press for hydraulic transmission of a torque converter according to claim 1,
the periphery of piston is provided with and is annular seal groove, be provided with the sealing ring in the seal groove, the sealing ring card is gone into in the seal groove, the sealing ring with left side pneumatic cylinder or the inner wall slip butt of right side pneumatic cylinder.
6. Hydraulic press for a hydraulic transmission of a hydrodynamic torque converter, according to claim 5,
the sealing ring is in an annular cylindrical shape, and the diameter of the section of the sealing ring is larger than the depth of the sealing groove.
7. The hydraulic press for hydraulic transmission of a torque converter according to claim 1,
the base comprises an annular supporting plate, and a bottom plate is arranged in the middle of the annular supporting plate.
8. The hydraulic press for a torque converter hydraulic transmission of claim 7,
the thickness of the annular supporting plate is higher than that of the bottom plate, that of the left cylinder body and that of the right cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011599459.XA CN112709800A (en) | 2020-12-29 | 2020-12-29 | Hydraulic device for hydraulic transmission of hydraulic torque converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011599459.XA CN112709800A (en) | 2020-12-29 | 2020-12-29 | Hydraulic device for hydraulic transmission of hydraulic torque converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112709800A true CN112709800A (en) | 2021-04-27 |
Family
ID=75546651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011599459.XA Pending CN112709800A (en) | 2020-12-29 | 2020-12-29 | Hydraulic device for hydraulic transmission of hydraulic torque converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112709800A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4060221A (en) * | 1976-02-03 | 1977-11-29 | Hiab-Foco Aktiebolag | Double-acting hydraulic cylinder having two pistons arranged for coaxial movement relative thereto |
| US5054289A (en) * | 1987-12-15 | 1991-10-08 | Nagatomo Fluid Machinery Laboratory Limited | Hydraulic transmission |
| RU2187027C2 (en) * | 2000-08-17 | 2002-08-10 | Военный автомобильный институт | Hydraulic system of vehicle hydromechanical transmission |
| CN206468368U (en) * | 2016-12-30 | 2017-09-05 | 山西浩业通用设备有限公司 | Full-automatic hydraulic support compensation device |
| CN108302088A (en) * | 2018-04-20 | 2018-07-20 | 河北能源职业技术学院 | Monoblock type cylinder connecting device on hydraulic support |
| CN108953279A (en) * | 2018-08-21 | 2018-12-07 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of double formula synchronous hydraulic cylinders out of double piston-rod |
| CN109236793A (en) * | 2018-11-09 | 2019-01-18 | 南京瑞泰水泥制造设备有限公司 | A kind of cement grate-cooler drive cylinder hydraulic device |
| CN110067784A (en) * | 2019-05-23 | 2019-07-30 | 浙江大学城市学院 | A kind of Two-dimensional Liquid cylinder pressure and variable damper control formula Two-dimensional Liquid cylinder pressure |
| CN209340244U (en) * | 2018-11-06 | 2019-09-03 | 佛山市南海兴迪机械制造有限公司 | A kind of articulated ultrahigh-pressure hydraulic booster |
-
2020
- 2020-12-29 CN CN202011599459.XA patent/CN112709800A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4060221A (en) * | 1976-02-03 | 1977-11-29 | Hiab-Foco Aktiebolag | Double-acting hydraulic cylinder having two pistons arranged for coaxial movement relative thereto |
| US5054289A (en) * | 1987-12-15 | 1991-10-08 | Nagatomo Fluid Machinery Laboratory Limited | Hydraulic transmission |
| RU2187027C2 (en) * | 2000-08-17 | 2002-08-10 | Военный автомобильный институт | Hydraulic system of vehicle hydromechanical transmission |
| CN206468368U (en) * | 2016-12-30 | 2017-09-05 | 山西浩业通用设备有限公司 | Full-automatic hydraulic support compensation device |
| CN108302088A (en) * | 2018-04-20 | 2018-07-20 | 河北能源职业技术学院 | Monoblock type cylinder connecting device on hydraulic support |
| CN108953279A (en) * | 2018-08-21 | 2018-12-07 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of double formula synchronous hydraulic cylinders out of double piston-rod |
| CN209340244U (en) * | 2018-11-06 | 2019-09-03 | 佛山市南海兴迪机械制造有限公司 | A kind of articulated ultrahigh-pressure hydraulic booster |
| CN109236793A (en) * | 2018-11-09 | 2019-01-18 | 南京瑞泰水泥制造设备有限公司 | A kind of cement grate-cooler drive cylinder hydraulic device |
| CN110067784A (en) * | 2019-05-23 | 2019-07-30 | 浙江大学城市学院 | A kind of Two-dimensional Liquid cylinder pressure and variable damper control formula Two-dimensional Liquid cylinder pressure |
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Application publication date: 20210427 |