CN112031064A - Hydraulic system with vibration suppression function and engineering machinery with same - Google Patents
Hydraulic system with vibration suppression function and engineering machinery with same Download PDFInfo
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- CN112031064A CN112031064A CN201910476048.2A CN201910476048A CN112031064A CN 112031064 A CN112031064 A CN 112031064A CN 201910476048 A CN201910476048 A CN 201910476048A CN 112031064 A CN112031064 A CN 112031064A
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- 230000001629 suppression Effects 0.000 title claims abstract description 53
- 230000009471 action Effects 0.000 claims abstract description 8
- 230000009467 reduction Effects 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 239000000969 carrier Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
- E02F9/2207—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for reducing or compensating oscillations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides a hydraulic system with a vibration suppression function and a construction machine with the same, wherein the hydraulic system with the vibration suppression function comprises: a boom cylinder; a bucket cylinder; the movable arm working link is provided with a first working oil port communicated with the movable arm large cavity and a second working oil port communicated with the movable arm small cavity, and the movable arm working link controls the action of the movable arm oil cylinder through reversing; the bucket working connection is provided with a third working oil port communicated with the bucket large cavity and a fourth working oil port communicated with the bucket small cavity, and the bucket working connection controls the action of the bucket oil cylinder through reversing; an accumulator; the vibration suppression module is integrated on the movable arm working link, and the vibration suppression module is connected with the movable arm working link and the energy accumulator to buffer the movable arm working link when the hydraulic system works. The hydraulic system with the vibration suppression function can increase the buffer of the movable arm, filter pressure impact and improve the working efficiency of the conveyor.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a hydraulic system with a vibration suppression function and engineering machinery with the hydraulic system.
Background
The carrier is a typical engineering vehicle, is a self-propelled device integrating shoveling, loading, transporting and unloading, and the working process of the carrier consists of six working conditions which are respectively as follows: the device comprises an insertion working condition, a shovel loading working condition, a heavy-load carrying working condition, a lifting working condition, an unloading working condition and an idle running working condition. The operation of shoveling and loading and unloading materials of the carrier is realized by the movement of the working device, and the bucket is hinged with the movable arm and the bucket cylinder through a connecting rod or a bracket and is used for loading and unloading materials; the movable arm is hinged with the frame and the movable arm oil cylinder for lifting the bucket.
The hydraulic system of the working device of the conveyor needs to meet the requirements of various working conditions in the operation process, particularly heavy-load conveying working conditions, and jolts generated in the running process of the conveyor and whole machine vibration and noise caused by pressure impact and the like should be reduced. However, most of the existing carriers still suffer from the problem, and during the carrying process of the carriers, the carriers vibrate violently, so that the comfort of drivers is insufficient, the materials are seriously scattered, the safety is poor, and the working efficiency, the service life and the safety of constructors of the carriers are seriously affected.
Disclosure of Invention
In view of the above, the present invention provides a hydraulic system having a vibration suppression function, which can increase the damping of a boom, filter pressure shocks, and improve the work efficiency of a conveyor.
The invention also provides engineering machinery.
A hydraulic system having a vibration suppressing function according to an embodiment of a first aspect of the invention includes: the movable arm oil cylinder is internally limited with a movable arm small cavity and a movable arm large cavity; the bucket oil cylinder is internally limited with a bucket large cavity and a bucket small cavity; the movable arm working link is provided with a first working oil port communicated with the movable arm large cavity and a second working oil port communicated with the movable arm small cavity, and the movable arm working link controls the action of the movable arm oil cylinder through reversing; the bucket working connection is provided with a third working oil port communicated with the bucket large cavity and a fourth working oil port communicated with the bucket small cavity, and the bucket working connection controls the action of the bucket oil cylinder through reversing; an accumulator operable to store energy of the boom work link and the bucket work link; the vibration suppression module is integrated on the movable arm working link, and the vibration suppression module is connected with the movable arm working link and the energy accumulator to buffer the movable arm working link when the hydraulic system works.
According to the hydraulic system with the vibration suppression function, the vibration suppression module is integrated on the movable arm working link, so that the movable arm and the energy accumulator can be connected with the transporter under the transportation working condition, the buffer of the movable arm is increased, the pressure impact is filtered, the comfort of a driver is improved, and the working efficiency of the transporter is improved.
The hydraulic system having a vibration suppressing function according to the embodiment of the invention also has the following additional technical features.
According to an embodiment of the present invention, the hydraulic system having a vibration suppressing function further includes: the pressure reducing relief valve can be used for filling the accumulator so as to keep the accumulator at a preset pressure value, and when the pressure value of the accumulator exceeds the pressure of the pressure reducing relief valve, the pressure reducing relief valve can unload redundant pressure.
According to an embodiment of the present invention, the hydraulic system having a vibration suppressing function further includes:
the oil inlet and return line can be used for communicating the oil inlet oil way and the oil return oil way and controlling the highest pressure value of the energy accumulator; and the tail link is integrated with the pressure reduction overflow valve to provide pilot oil pressure.
According to one embodiment of the invention, the accumulator comprises: the high-pressure switch electromagnetic valve can be used for detecting the change of the vehicle speed of the vehicle carrying the hydraulic system and the change of the working condition, when the hydraulic system is detected to be in the carrying working condition, the high-pressure switch electromagnetic valve is reversed to enable the main valve core of the vibration suppression module to be reversed to a through state from a cut-off state, the movable arm large cavity is connected with the energy accumulator, and the movable arm small cavity is connected with the oil return oil way.
According to one embodiment of the invention, the main valve element of the vibration suppression module is a two-position four-way reversing valve, one side of the main valve element is respectively communicated with the small movable arm cavity and the large movable arm cavity, and the other side of the main valve element is respectively communicated with the energy accumulator and the oil return circuit.
According to one embodiment of the invention, the vibration suppression module comprises: the pressure difference unloading valve balances the pressure between the energy accumulator and the movable arm large cavity to reduce the pressure impact at the moment of reversing when the high-pressure switch electromagnetic valve is electrified; a safety relief valve that can be used to protect the accumulator.
According to an embodiment of the present invention, the hydraulic system having a vibration suppressing function further includes: the check valve is matched with the pressure reduction overflow valve to charge the accumulator.
According to one embodiment of the invention, the vibration suppression module comprises: and the electromagnetic valve is connected with the pressure reduction overflow valve, and the electromagnetic valve is closed after being electrified so as to cut off a liquid filling loop of the energy accumulator.
A working machine according to an embodiment of a second aspect of the present invention includes the hydraulic system having the vibration suppressing function described in the above embodiment.
Drawings
Fig. 1 is a schematic diagram of a hydraulic system having a vibration suppression function according to an embodiment of the present invention.
Reference numerals:
a hydraulic system 100 having a vibration suppression function; an oil inlet and return line 1; a movable arm working link 2; a bucket working unit 3; a tail link 4; a boom cylinder 5; an accumulator 6; a bucket cylinder 7; a latch valve 8; an electromagnetic on-off valve 9; main spool 10; a differential pressure unloading valve 11; a safety overflow valve 12; a check valve 13; an emergency unloader valve 14; a pressure reducing relief valve 15; a solenoid valve 16.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The hydraulic system 100 having a vibration suppressing function according to an embodiment of the present invention will be described first in detail with reference to the drawings.
As shown in fig. 1, a hydraulic system 100 having a vibration suppression function according to an embodiment of the present invention includes a boom cylinder 5, a bucket cylinder 7, a boom work linkage 2, a bucket work linkage 3, an accumulator 6, and a vibration suppression module (not shown).
Specifically, a boom small cavity and a boom large cavity are defined in the boom cylinder 5, a bucket large cavity and a bucket small cavity are defined in the bucket cylinder 7, a first working oil port (working oil port B1) communicated with the boom large cavity is provided on the boom working link 2, and a second working oil port (working oil port A1) communicated with the small movable arm cavity, the movable arm working link 2 controls the action of the movable arm oil cylinder 5 through reversing, a third working oil port (working oil port B2) communicated with the large bucket cavity is arranged on the bucket working link 3, and a fourth working oil port (a working oil port a2) communicated with the small cavity of the bucket, wherein the bucket working link 3 controls the action of the bucket oil cylinder 7 through reversing, the energy accumulator 6 can be used for storing the energy of the movable arm working link 2 and the bucket working link 3, the vibration suppression module is integrated on the movable arm working link 2, and the vibration suppression module is connected with the movable arm working link 2 and the energy accumulator 6 to buffer the movable arm working link 2 when the hydraulic system works. The movable arm work link 2 is integrated with a vibration suppression module, so that the movable arm and the energy accumulator 6 can be connected with the conveyer under the conveying working condition, the buffer of the movable arm is increased, the pressure impact is filtered, the comfort of a driver is improved, and the working efficiency of the conveyer is improved.
Therefore, according to the hydraulic system 100 with the vibration suppression function of the embodiment of the invention, by integrating the vibration suppression module on the boom work linkage 2, the hydraulic system 100 with the vibration suppression function enables the transporter to connect the boom and the accumulator 6 under the transportation condition, so that the buffer of the boom is increased, the pressure impact is filtered, the comfort of the driver is improved, and the working efficiency of the transporter is improved.
According to some specific embodiments of the present invention, the hydraulic system 100 with vibration suppression function further includes a pressure-reducing relief valve 15, the pressure-reducing relief valve 15 being capable of being used to charge the accumulator 6 to maintain the accumulator 6 at a predetermined pressure value, and the pressure-reducing relief valve 15 relieves excess pressure when the pressure value of the accumulator 6 exceeds the pressure of the pressure-reducing relief valve 15.
Specifically, when the pressure value of the accumulator 6 is higher, the pressure reducing and overflowing valve 15 will be switched to the highest position, and a part of pressure oil is discharged, so as to ensure the pressure of the accumulator 6 to be stable. When the pressure of the oil path of the oil inlet path P is reduced and is lower than the pressure value of the energy accumulator 6, the liquid charging loop of the energy accumulator 6 can be cut off through the one-way valve 13, and the pressure of the energy accumulator 6 is maintained.
Optionally, the hydraulic system 100 with vibration suppression function further includes an oil inlet and outlet coupling 1 and a tail coupling 4.
Specifically, the oil inlet and return coupling 1 can be used for communicating an oil inlet path and an oil return path, the highest pressure value of the energy accumulator 6 is controlled, and the tail coupling 4 is integrated with the pressure reduction overflow valve 15 to provide pilot oil pressure.
That is to say, the oil inlet-return coupling 1 is mainly connected with oil inlet and oil return of the system, and controls the highest pressure of the system, the hydraulic system 100 with the vibration suppression function is further provided with an oil return back pressure valve to improve the oil supplementing capacity of the oil cylinder under partial working conditions, and the tail coupling 4 mainly plays a role of a cover plate and is integrated with a pressure reduction overflow valve 15 to provide pilot oil pressure for the reversing of a main valve of the whole system.
According to an embodiment of the present invention, the accumulator 6 includes a high-pressure switching solenoid valve, the high-pressure switching solenoid valve can be used for detecting a change in vehicle speed and a change in operating condition of a vehicle carrying the hydraulic system, when it is detected that the hydraulic system is in a carrying operating condition, the high-pressure switching solenoid valve is reversed to reverse the main spool 10 of the vibration suppression module from a cut-off state to a through state, the boom large chamber is connected to the accumulator 6, and the boom small chamber is connected to the oil return path. At the same time, the pressure reducing and overflowing valve 15 is also reversed to the stop position, and the accumulator 6 and the charging loop are stopped.
Preferably, the main valve element 10 of the vibration suppression module is a two-position four-way reversing valve, one side of the main valve element 10 is respectively communicated with the small movable arm cavity and the large movable arm cavity, and the other side of the main valve element 10 is respectively communicated with the energy accumulator 6 and the oil return circuit.
According to one embodiment of the present invention, the vibration suppression module includes a differential pressure relief valve 11 and a safety relief valve 12.
Specifically, when the high-pressure switching solenoid valve is powered on, the differential pressure unloading valve 11 balances the pressure between the energy accumulator 6 and the large cavity of the movable arm to reduce the pressure impact at the moment of reversing, and the safety overflow valve 12 can be used for protecting the energy accumulator 6.
Specifically, the vibration suppression module is provided with a differential pressure unloading valve 11, and when the high-pressure switch electromagnetic valve is electrified, the differential pressure unloading valve 11 can quickly balance the pressure between the energy accumulator 6 and the large cavity of the movable arm, so that the pressure impact at the moment of reversing is reduced. The vibration suppression module is further provided with a safety overflow valve 12, and the safety overflow valve 12 protects the energy accumulator 6 and prevents the pressure of the energy accumulator 6 from being too high.
According to one embodiment of the present invention, hydraulic system 100 with vibration suppression further includes check valve 13, check valve 13 cooperating with relief and pressure relief valve 15 to charge accumulator 6.
That is, the hydraulic system 100 having the vibration suppression function includes the relief and relief valve 15 and the check valve 13, and the system high-pressure oil path P charges the accumulator 6 through the check valve 13 and the relief and relief valve 15, and maintains the accumulator 6 at a certain pressure value.
According to still another embodiment of the present invention, the hydraulic system 100 with vibration suppression function further includes a solenoid valve 16, the solenoid valve 16 is connected to the pressure reducing relief valve 15, and the solenoid valve 16 is energized to close the pressure reducing relief valve 15 and cut off the charging circuit of the accumulator 6.
Optionally, the boom working linkage 2 is provided with an electrically controlled boom locking valve, the electrically controlled boom locking valve ensures that the boom does not retract in the lifting static state, so that the stability and the safety of the transporter are improved, and the boom large cavity is provided with an emergency unloading valve 14 for emergency.
It should be noted that, when the transporter reaches a certain speed under the transportation condition, the controller on the host computer will send out a signal through detection and calculation, so that the electromagnetic valve 16 is powered on. When the electromagnetic valve 16 is electrified, the pressure reducing overflow valve 15 is quickly switched to the lower position, and the accumulator 6 and the charging loop are cut off. And at this time, the differential pressure unloading valve 11 can also rapidly compare the pressure values of the first working oil port connected with the movable arm large cavity and the pressure value of the energy accumulator 6 loop, unload the redundant pressure oil in the energy accumulator 6, balance the pressure values at two sides, and play the effect of reducing pressure impact as much as possible.
In addition, after the electromagnetic valve 16 is powered on, one path of oil can act on the upper cavity of the main valve element 10 through damping, the main valve element 10 is pushed to change the direction, the first working oil port connected with the large movable arm cavity is communicated with the energy accumulator 6, the small movable arm cavity is communicated with the oil return path T oil path, at the moment, the transporter enters a movable arm vibration reduction state, and pressure generated in the first working oil port connected with the large movable arm cavity is impacted to be attenuated and filtered through the energy accumulator 6. The conveyer obtains a relatively stable state in the conveying working condition, reduces material scattering, and improves the comfort of a driver. Therefore, the conveyer obtains good service performance under the condition that the running speed is not reduced, and the working efficiency and the economic benefit of the conveyer are improved.
The movable arm working link 2 is provided with an electric control movable arm locking valve which comprises a locking valve 8 and an electromagnetic switch valve 9, and in a non-holding state of the movable arm of the transporter, a controller on a host machine sends a signal to the electromagnetic switch valve 9 to release the locking function of the movable arm. When the carrier is in a holding state, the electromagnetic switch valve 9 is de-energized, and the lock valve 8 is locked.
The vibration suppression module is provided with a safety relief valve 12 for protecting the accumulator 6 and preventing the accumulator 6 from being over pressurized. The first working oil port connected with the large cavity of the movable arm is provided with an emergency unloading valve 14, and in an emergency situation, pressure oil in the large cavity can be unloaded back to the T oil way, so that the movable arm can slowly descend, and potential safety hazards are eliminated.
In summary, according to the hydraulic system 100 with the vibration suppression function of the embodiment of the present invention, by integrating the vibration suppression module on the boom work linkage 2, the hydraulic system 100 with the vibration suppression function enables the carrier to connect the boom and the accumulator 6 under the carrying condition, increases the damping of the boom, filters the pressure impact, improves the comfort of the driver, and improves the working efficiency of the carrier.
The construction machine according to the embodiment of the present invention includes the hydraulic system 100 with the vibration suppression function according to the above-described embodiment, and since the hydraulic system 100 with the vibration suppression function according to the above-described embodiment of the present invention has the above-described technical effects, the construction machine according to the embodiment of the present invention also has the corresponding technical effects, is low in production cost, and is beneficial to realizing modeling diversification.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A hydraulic system having a vibration suppression function, characterized by comprising:
the movable arm oil cylinder is internally limited with a movable arm small cavity and a movable arm large cavity;
the bucket oil cylinder is internally limited with a bucket large cavity and a bucket small cavity;
the movable arm working link is provided with a first working oil port communicated with the movable arm large cavity and a second working oil port communicated with the movable arm small cavity, and the movable arm working link controls the action of the movable arm oil cylinder through reversing;
the bucket working connection is provided with a third working oil port communicated with the bucket large cavity and a fourth working oil port communicated with the bucket small cavity, and the bucket working connection controls the action of the bucket oil cylinder through reversing;
an accumulator operable to store energy of the boom work link and the bucket work link;
the vibration suppression module is integrated on the movable arm working link, and the vibration suppression module is connected with the movable arm working link and the energy accumulator to buffer the movable arm working link when the hydraulic system works.
2. The hydraulic system with a vibration suppressing function as recited in claim 1, characterized by further comprising:
the pressure reducing relief valve can be used for filling the accumulator so as to keep the accumulator at a preset pressure value, and when the pressure value of the accumulator exceeds the pressure of the pressure reducing relief valve, the pressure reducing relief valve can unload redundant pressure.
3. The hydraulic system with a vibration suppressing function as recited in claim 2, characterized by further comprising:
the oil inlet and return line can be used for communicating the oil inlet oil way and the oil return oil way and controlling the highest pressure value of the energy accumulator;
and the tail link is integrated with the pressure reduction overflow valve to provide pilot oil pressure.
4. The hydraulic system having a vibration suppression function according to claim 3, characterized in that the accumulator comprises:
the high-pressure switch electromagnetic valve can be used for detecting the change of the vehicle speed of the vehicle carrying the hydraulic system and the change of the working condition, when the hydraulic system is detected to be in the carrying working condition, the high-pressure switch electromagnetic valve is reversed to enable the main valve core of the vibration suppression module to be reversed to a through state from a cut-off state, the movable arm large cavity is connected with the energy accumulator, and the movable arm small cavity is connected with the oil return oil way.
5. The hydraulic system with the vibration suppression function according to claim 4, wherein a main valve core of the vibration suppression module is a two-position four-way reversing valve, one side of the main valve core is respectively communicated with the small boom cavity and the large boom cavity, and the other side of the main valve core is respectively communicated with the accumulator and the oil return path.
6. The hydraulic system with a vibration suppression function according to claim 5, characterized in that the vibration suppression module includes:
the pressure difference unloading valve balances the pressure between the energy accumulator and the movable arm large cavity to reduce the pressure impact at the moment of reversing when the high-pressure switch electromagnetic valve is electrified;
a safety relief valve that can be used to protect the accumulator.
7. The hydraulic system with a vibration suppressing function as recited in claim 6, characterized by further comprising:
the check valve is matched with the pressure reduction overflow valve to charge the accumulator.
8. The hydraulic system with a vibration suppressing function as recited in claim 7, characterized by further comprising:
and the electromagnetic valve is connected with the pressure reduction overflow valve, and the electromagnetic valve is closed after being electrified so as to cut off a liquid filling loop of the energy accumulator.
9. A working machine characterized by comprising a hydraulic system having a vibration suppressing function according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910476048.2A CN112031064A (en) | 2019-06-03 | 2019-06-03 | Hydraulic system with vibration suppression function and engineering machinery with same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910476048.2A CN112031064A (en) | 2019-06-03 | 2019-06-03 | Hydraulic system with vibration suppression function and engineering machinery with same |
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| CN112031064A true CN112031064A (en) | 2020-12-04 |
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| CN201910476048.2A Pending CN112031064A (en) | 2019-06-03 | 2019-06-03 | Hydraulic system with vibration suppression function and engineering machinery with same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112942456A (en) * | 2021-01-29 | 2021-06-11 | 上海三一重机股份有限公司 | Loader mobile arm shock mitigation system and operation machinery |
| JP7523394B2 (en) | 2021-03-24 | 2024-07-26 | 日立建機株式会社 | Wheel Loader |
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| JPH02283932A (en) * | 1989-04-21 | 1990-11-21 | Yutani Heavy Ind Ltd | Vibration restraining device for vehicle during running |
| JPH0742385U (en) * | 1993-12-28 | 1995-08-04 | 東洋運搬機株式会社 | Switching device for dynamic damper of work vehicle |
| JPH1136375A (en) * | 1997-07-22 | 1999-02-09 | Komatsu Ltd | Traveling vibration-control hydraulic circuit in construction machine with wheel |
| JP2005155242A (en) * | 2003-11-27 | 2005-06-16 | Komatsu Ltd | Hydraulic circuit for suppressing traveling vibration of wheel type construction machine |
| CN102720232A (en) * | 2012-06-15 | 2012-10-10 | 江苏柳工机械有限公司 | Damping device of swing arms of slipping steering loaders |
| CN210713029U (en) * | 2019-06-03 | 2020-06-09 | 江苏恒立液压科技有限公司 | Hydraulic system with vibration suppression function and engineering machinery with same |
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2019
- 2019-06-03 CN CN201910476048.2A patent/CN112031064A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02283932A (en) * | 1989-04-21 | 1990-11-21 | Yutani Heavy Ind Ltd | Vibration restraining device for vehicle during running |
| JPH0742385U (en) * | 1993-12-28 | 1995-08-04 | 東洋運搬機株式会社 | Switching device for dynamic damper of work vehicle |
| JPH1136375A (en) * | 1997-07-22 | 1999-02-09 | Komatsu Ltd | Traveling vibration-control hydraulic circuit in construction machine with wheel |
| JP2005155242A (en) * | 2003-11-27 | 2005-06-16 | Komatsu Ltd | Hydraulic circuit for suppressing traveling vibration of wheel type construction machine |
| CN102720232A (en) * | 2012-06-15 | 2012-10-10 | 江苏柳工机械有限公司 | Damping device of swing arms of slipping steering loaders |
| CN210713029U (en) * | 2019-06-03 | 2020-06-09 | 江苏恒立液压科技有限公司 | Hydraulic system with vibration suppression function and engineering machinery with same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112942456A (en) * | 2021-01-29 | 2021-06-11 | 上海三一重机股份有限公司 | Loader mobile arm shock mitigation system and operation machinery |
| WO2022161068A1 (en) * | 2021-01-29 | 2022-08-04 | 上海三一重机股份有限公司 | Damping system for movable arm of loading machine, and operation machinery |
| JP7523394B2 (en) | 2021-03-24 | 2024-07-26 | 日立建機株式会社 | Wheel Loader |
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