CN206968645U - A kind of non-locking automatic braking device for hydraulic-driven - Google Patents
A kind of non-locking automatic braking device for hydraulic-driven Download PDFInfo
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- CN206968645U CN206968645U CN201720899712.0U CN201720899712U CN206968645U CN 206968645 U CN206968645 U CN 206968645U CN 201720899712 U CN201720899712 U CN 201720899712U CN 206968645 U CN206968645 U CN 206968645U
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- airdraulic actuator
- hydraulic cylinder
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Abstract
The utility model discloses a kind of non-locking automatic braking device for hydraulic-driven.The device includes airdraulic actuator and connected fluid pressure line, gas circuit and braking vane.Air chamber, hydraulic cavities, the brake piston bar for applying thrust to braking vane, the back-moving spring that reset is declutched, the sealing piston of transmission pressure and some flanges for resetting positioning are provided with airdraulic actuator.Fluid pressure line includes being used to connect driving hydraulic cylinder and control braking electromagnetic switch valve, the fluid path safety valve for resetting the reset solenoid valve to declutch, preventing overvoltage.Gas circuit includes pressure gauge and sets the gas supplementing opening of initial gas pressure.Airdraulic actuator and connected fluid pressure line and gas circuit etc. can be consolidated use by the pedestal of bearing and the hydraulic cylinder of driving load, also can be with being linked together use by the load of Driven by Hydraulic Cylinder.The high speed load movement mechanism that the device is used for Driven by Hydraulic Cylinder realizes that the non-locking self-actuating brake with high reliability is braked under special or abnormal conditions.
Description
Technical field
It the utility model is related to a kind of non-locking automatic braking device applied to hydraulic-driven.
Background technology
Hydraulic cylinder is usually used in the straight drive to load, when being supported at a high speed or during higher speed motion state, especially inertia or
The larger load of quality, once there is the state of emergency, such as control system power down or control piper failure, then need to carry out immediately non-
The braking brake of locking, to ensure the safety of hydraulic cylinder, motion control pipeline and load.In addition, in some high reliability requests
Particular application, such as the hydraulic control system of Shipborne UAV ejection recovery, it is also desirable to which ejection and recovering mechanism are super
The self-actuating brake braking of non-locking mode is carried out when crossing certain limit positions, makes ejection and recovering mechanism can in shorter stroke
Safely even slow down stops.
The braking of hydraulic cylinder at present generally has Three models, and one kind is mechanical interlocking pattern, that is, passes through spring and electro-hydraulic group
Attach together and put to realize, its advantage is that structure is simpler, suitable for the operating mode of motion inactive state, but to high-speed motion mistake
When mechanism in journey is braked, exist effect it is poor, impact it is big, it is easy to wear failure and safeguard the shortcomings of inconvenient.It is for second
Accumulation of energy absorption mode, i.e., realized by way of the hydraulic oil in hydraulic cylinder is injected into accumulator, its advantage is simple in construction
And energy recoverable, but the contradiction of pipeline high pressure risk and fast braking be present（Cause the initial of accumulation of energy absorber
Pressure is difficult setting）, automatic switchover opportunity be difficult to hold the shortcomings of.The third is restricting orifice pattern, the letter of its advantage structure
List, cost are low, and shortcoming is to easily cause the even coking failure of hydraulic oil TRANSIENT HIGH TEMPERATURE, oxidation deterioration.
The content of the invention
The purpose of this utility model is exactly to provide a kind of gas-liquid for the weak point in the presence of above-mentioned prior art
Brake apparatus --- the non-locking automatic braking device for hydraulic-driven.The device can be used for the high speed of Driven by Hydraulic Cylinder
Load movement mechanism realizes that the non-locking self-actuating brake with high reliability is braked under special or abnormal conditions.
Mentality of designing of the present utility model is：Hydraulic cylinder is in driving load high-speed motion, if piston rod movement direction one
The control piper of the hydraulic cavities at end is closed suddenly, the control piper state regardless of other end hydraulic chamber, then load and
Piston rod continues to move along the former direction of motion in the presence of inertia force, can be converted into this kinetic energy by a gas-liquid device
The brake force for hindering it to move, while consumed by the way of frictional heat, the purpose of braking can be reached, if device knot
Structure designs the application speed and strength that can make the brake force and its kinetic energy into positive correlation, then can reach preferable braking procedure effect
Fruit.
The purpose of this utility model can be realized using following technique measures：
Non- locking automatic braking device of the present utility model for hydraulic-driven is including airdraulic actuator and accordingly
Fluid pressure line and gas circuit；The middle part of the airdraulic actuator is hydraulic cavities, both ends are the symmetrical cloth centered on hydraulic cavities
The air chamber put, the sealing piston of movable type is installed between hydraulic cavities and air chamber；The outer face of the air chamber is provided with
With the passage of atmosphere, the brake piston bar with back-moving spring, the brake piston are installed in each air chamber
The sliding sleeve that the epitaxial end of bar is set through air chamber outer face is combined with being provided with the braking vane of brake block；The fluid pressure line
At least hydraulic chamber into communication of a hydraulic tube and airdraulic actuator, and connected respectively by electromagnetic switch valve and corresponding Hydraulic Elements
To the rod chamber and rodless cavity of driving hydraulic cylinder；Two air chamber connections are made two cavity pressures equal all the time by the gas circuit,
And the pressure gauge of measurement and instruction pressure is provided with gas circuit and sets the gas supplementing opening of air chamber initial pressure.
It is provided with described in the utility model in airdraulic actuator some for being positioned when sealing piston, the reset of brake piston bar
Individual flange；Be provided with the fluid pressure line declutch and the reset solenoid valve of reset, prevent overvoltage fluid path safety valve；It is described
Airdraulic actuator and connected fluid pressure line, gas circuit are consolidated by the pedestal of bearing and the hydraulic cylinder of driving load, or
With being linked together use by the load of Driven by Hydraulic Cylinder.
The piston inner face of piston deceleration bar described in the utility model is provided with piston limit block.
Operation principle of the present utility model is as follows：
Under non-skidding state, the electromagnetic switch valve in fluid pressure line disconnects airdraulic actuator and driving hydraulic cylinder, gas
Endoceliac air pressure is more than the elastic force that oil pressure but caused brake piston bar thrust in hydraulic cavities are less than back-moving spring, at airdraulic actuator
In non-brake reset state.Electromagnetic switch valve is opened under certain condition, high caused by driving hydraulic cylinder rod chamber or rodless cavity
Force feed by fluid pressure line enter airdraulic actuator hydraulic cavities, when in hydraulic cavities oil pressure be more than air chamber in initial gas pressure and
During the sum of back-moving spring, the gas that sealing piston moves out compressed gas intracavitary makes its pressure rise, when air pressure is enough gram
When taking the elastic force of back-moving spring, brake piston bar promotes braking vane to be contacted after moving the distance of a very little to termination with keep plate in fact
Existing friction catch, with the rise for increasing gentle body intracavity pressure for entering oil mass in hydraulic cavities, brake force gradually increases, when close
After envelope piston contacts with the piston limit block of brake piston bar, brake force reaches rated value and is kept, subsequently by driving hydraulic pressure
The hydraulic oil that cylinder enters fluid pressure line then returns to fuel tank by fluid path safety valve.
The beneficial effects of the utility model are as follows：
As a result of the braking mode of non-locking, therefore avoid the impact to equipment and load；Using being braked object
Kinetic energy braked, it is not necessary to extra brake power source；It is easily achieved automatic triggering braking procedure；It is braked object
Speed is higher, and braking response speed is faster；Before rated value is reached its brake force and the kinetic energy size of object was braked into positive
Close；Maximum brake force can be kept；Because both ends brake force can realize automatic equalization, therefore airdraulic actuator is born axially
To make a concerted effort be that zero can substantially reduce its axial restraint intensity requirement；There can be two kinds of different installations to fix use pattern.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Sequence number in figure：1 is airdraulic actuator, and 2 be brake piston bar, and 3 be back-moving spring, and 4 be sealing piston, and 5 be brake block, 6
It is flange, 7 be braking vane, and 8 be passage, and 9 be bearing, and 10 be gas circuit, and 11 be gas circuit safety valve, and 12 be pressure gauge, and 13 be to mend
Gas port, 14 be fluid pressure line, and 15,16 be electromagnetic switch valve, and 17 be reset solenoid valve, and 18 be fluid path safety valve, and 19 be driving control
Tubulation road, 20 be driving hydraulic cylinder, and 21 be load, and 22 be keep plate, and 23 be piston limit block.
Embodiment
The utility model is below with reference to embodiment（Accompanying drawing）It is further described：
As shown in figure 1, gas-liquid brake apparatus of the present utility model includes airdraulic actuator 1 and its fluid pressure line 14 of outside is gentle
Road 10；The airdraulic actuator 1 can be supported or be fixed by the bearing 9 of two ends, and the centre of airdraulic actuator 1 is hydraulic cavities, both ends
It is into the air chamber of bilateral symmetry centered on hydraulic cavities, the sealing that movable type is provided between hydraulic cavities and air chamber is lived
Plug 4, can change the volume size of hydraulic cavities and air chamber by the change in location of sealing piston 4, be set on the outer face of air chamber
Have with the passage of atmosphere 8, the brake piston bar 2 with back-moving spring 3, the braking are installed in each air chamber
The sliding sleeve that the epitaxial end of piston rod 2 is set through air chamber outer face is combined with being provided with the braking vane 7 of brake block 5；Braking
The piston inner face of piston rod 2 is provided with piston limit block 23, and several are provided with airdraulic actuator 1 and is used for sealing piston 4 and system
Piston bar 2 resets spacing flange 6；The hydraulic chamber into communication of the fluid pressure line 14 at least a hydraulic tube and airdraulic actuator 1,
And the rod chamber and rodless cavity of driving hydraulic cylinder 20 are connected to by electromagnetic switch valve 15,16 and corresponding Hydraulic Elements respectively,
And be provided with the fluid pressure line 14 for discharge brake pressure make airdraulic actuator 1 reset reset solenoid valve 17 and ensure
The fluid path safety valve 18 of fluid pressure line safety.Two air chamber connections are made two cavity pressures equal all the time by the gas circuit 10；
The pressure gauge 12 of measurement or instruction pressure is provided with the gas circuit 10 and sets the gas supplementing opening 13 of air chamber initial pressure.
Working method of the present utility model is as follows：Under non-skidding state, the electromagnetic switch valve in fluid pressure line 14
15th, 16 disconnect airdraulic actuator 1 and driving hydraulic cylinder 20, and the air pressure in air chamber is more than the oil pressure in hydraulic cavities but caused braking
The bar thrust of piston 2 is less than the elastic force of back-moving spring 3, and airdraulic actuator 1 is in non-brake reset state.Electromagnetic switch under certain condition
Valve 15 and 16 is opened, and hydraulic oil caused by the rod chamber of driving hydraulic cylinder 20 or rodless cavity enters airdraulic actuator 1 by fluid pressure line 14
Hydraulic cavities, when in hydraulic cavities oil pressure be more than air chamber in initial gas pressure and back-moving spring 3 sum when, sealing piston
4 gases for moving out compressed gas intracavitary make its pressure rise, when air pressure is enough to overcome the elastic force of back-moving spring 3, braking
The promotion braking vane 7 of piston rod 2 contacts with keep plate 22 after moving the distance of a very little to termination and realizes friction catch, with entrance
The rise for increasing gentle body intracavity pressure of oil mass, brake force gradually increase in hydraulic cavities, when sealing piston 4 and brake piston bar
After 2 piston limit block 23 contacts, brake force reaches rated value and is kept, and subsequently enters fluid pressure line by driving hydraulic cylinder 20
Hydraulic oil fuel tank is then returned to by fluid path safety valve 18.
Claims (5)
1. a kind of non-locking automatic braking device for hydraulic-driven, it includes airdraulic actuator（1）And corresponding hydraulic pressure
Pipeline（14）And gas circuit（10）, it is characterised in that：The airdraulic actuator（1）Middle part for hydraulic cavities, both ends be with hydraulic cavities
Centered on symmetrical arrangement air chamber, be provided between hydraulic cavities and air chamber movable type sealing piston（4）；It is described
The outer face of air chamber is provided with the passage with atmosphere, is provided with each air chamber with back-moving spring（3）'s
Brake piston bar（2）, the brake piston bar（2）Epitaxial end through air chamber outer face set sliding sleeve and brake is installed
Piece（5）Braking vane（7）It is combined；The fluid pressure line（14）At least a hydraulic tube and airdraulic actuator（1）Hydraulic cavities connect
It is logical, and pass through electromagnetic switch valve respectively（15）、（16）And corresponding Hydraulic Elements are connected to driving hydraulic cylinder（20）Rod chamber
And rodless cavity；The gas circuit（10）Make two cavity pressures equal all the time two air chamber connections, and be provided with gas circuit
Measurement and the pressure gauge of instruction pressure（12）And the gas supplementing opening of setting air chamber initial pressure（13）.
2. the non-locking automatic braking device according to claim 1 for hydraulic-driven, it is characterised in that：It is described
Brake piston bar（2）Piston inner face be provided with piston limit block（23）.
3. the non-locking automatic braking device according to claim 1 for hydraulic-driven, it is characterised in that：It is described
Airdraulic actuator is provided with for sealing piston in (1)（4）, brake piston bar（2）Several flanges positioned during reset（6）.
4. the non-locking automatic braking device according to claim 1 for hydraulic-driven, it is characterised in that：It is described
Fluid pressure line（14）On be provided with and declutch and the reset solenoid valve of reset（17）, prevent overvoltage fluid path safety valve（18）.
5. the non-locking automatic braking device according to claim 1 for hydraulic-driven, it is characterised in that：It is described
Airdraulic actuator（1）And connected fluid pressure line（14）, gas circuit（10）Pass through bearing（9）With the pedestal of the hydraulic cylinder of driving load
It is consolidated, or with being linked together use by the load of Driven by Hydraulic Cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720899712.0U CN206968645U (en) | 2017-07-24 | 2017-07-24 | A kind of non-locking automatic braking device for hydraulic-driven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720899712.0U CN206968645U (en) | 2017-07-24 | 2017-07-24 | A kind of non-locking automatic braking device for hydraulic-driven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206968645U true CN206968645U (en) | 2018-02-06 |
Family
ID=61398389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720899712.0U Active CN206968645U (en) | 2017-07-24 | 2017-07-24 | A kind of non-locking automatic braking device for hydraulic-driven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206968645U (en) |
-
2017
- 2017-07-24 CN CN201720899712.0U patent/CN206968645U/en active Active
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