CN206017323U - A kind of hydrocylinder buffering device - Google Patents
A kind of hydrocylinder buffering device Download PDFInfo
- Publication number
- CN206017323U CN206017323U CN201621022237.0U CN201621022237U CN206017323U CN 206017323 U CN206017323 U CN 206017323U CN 201621022237 U CN201621022237 U CN 201621022237U CN 206017323 U CN206017323 U CN 206017323U
- Authority
- CN
- China
- Prior art keywords
- valve
- directional control
- way directional
- hydraulic jack
- control valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a kind of hydrocylinder buffering device, including hydraulic jack, variable pump, fuel tank, electromagnetic proportion throttle, three position four-way directional control valve, electromagnetic valve, and programmable logic controller (PLC), wherein, the first hydraulic fluid port of hydraulic jack and the second hydraulic fluid port A respectively with three position four-way directional control valve, B mouths are connected by pipeline, the P of three position four-way directional control valve, T mouths difference link variable pump and fuel tank, electromagnetic valve is connected to control the valve element movement of three position four-way directional control valve with three position four-way directional control valve, electromagnetic proportion regulating is connected to the oil-in and oil-out of hydraulic jack, the valve element movement of PLC controls electromagnetic proportion regulating.Hydrocylinder buffering device of the present utility model can enter row buffering to the hydraulic shock produced due to oil liquid pressure increase suddenly in cylinder barrel, improve the comfortableness of crane gear manipulation；And row buffering can be entered to the hydraulic shock of the return line caused due to inertia, improve the service life of oil return lateral line.
Description
Technical field
This utility model is related to technical field of hydraulic equipment, and a kind of more particularly to hydraulic oil pump buffer unit.
Background technology
In some large ocean engineering machinery (for example extra large work folding-jib crane), realize by hydraulic jack is flexible
Heavy-duty machine main boom, the lifting of secondary arm frame and decentralization.In operation process, the control handle in hoister room can be passed through to rising
Weighing arm constantly carries out lifting manipulation, i.e., startup is repeated to hydraulic jack, stops operation.On startup, hydraulic jack meeting
Impact is produced because of the increase suddenly of oil-feed cavity pressure, in stopped process, hydraulic jack has continuation motion due to effect of inertia
Trend, this all produce return line fluid compress so as to cause line shock, this two kinds of situations can affect crane gear
Manipulation comfortableness and service life.
Some hydrocylinder buffering devices existing are typically all to prevent inertia force and hydraulic coupling because of moving component
When the mechanical impact between the oil cylinder piston for causing and cylinder barrel, a segment distance before hydraulic jack stroke to terminal, by hydraulic pressure
The oil back chamber working connection closing of oil cylinder, forces fluid to flow out from the gap of design or throttle orifice, so as to hydraulic shock is passed through seam
Gap or throttle orifice are converted into heat energy.But this conventional hydrocylinder buffering device cannot be to above-mentioned extra large work folding-jib crane
Lasting startup, stop operation process enter row buffering.
Utility model content
In order to overcome the defect of prior art, this utility model to provide a kind of hydrocylinder buffering device, which can be in liquid
Row buffering is entered to the hydraulic shock produced due to oil liquid pressure increase suddenly in cylinder barrel when compressing cylinder starts every time, is improve
The comfortableness of crane gear manipulation；And the hydraulic shock of return line that can be when hydraulic jack stops to being caused due to inertia
Enter row buffering, improve the service life of oil return lateral line.Additionally, can also be carried out accordingly to control parameter according to the size of load
Ground adjustment, to obtain optimal buffering effect under different loads.
According to this utility model, there is provided a kind of hydrocylinder buffering device, including hydraulic jack, variable pump, fuel tank, electromagnetism
Proportional throttle valve, three position four-way directional control valve, electromagnetic valve and programmable logic controller (PLC) (PLC), wherein, hydraulic jack first
Hydraulic fluid port is connected by pipeline with A, B mouth of three position four-way directional control valve respectively with the second hydraulic fluid port, P, T mouth point of three position four-way directional control valve
Other link variable pump and fuel tank, electromagnetic valve are connected with three position four-way directional control valve to control the valve element movement of three position four-way directional control valve,
Electromagnetic proportion regulating is connected to the oil-in and oil-out of hydraulic jack, PLC controls solenoid-operated proportional
The valve element movement of regulating valve.
Further, also include that balanced valve, balanced valve are arranged between hydraulic jack and three position four-way directional control valve.
Further, hydraulic jack includes rod chamber and rodless cavity.
Further, programmable logic controller adjusts the scale parameter of electromagnetic proportion throttle according to loine pressure.
Further, also include variable pump, dosing pump, motor and overflow valve, motor respectively with variable pump and variable
Pump connects.
Further, overflow valve is connected in parallel on the oil feed line of dosing pump and variable pump.
According to this utility model provide technical scheme, using electromagnetic proportion throttle, set by early stage and according to
Lifting loads situation, PLC automatically adjust the hydraulic punch of oil suction chamber when electromagnetic proportion throttle valve core opening starts to hydraulic jack
Hit into row buffering, effectively can be buffered in the whole stroke range of hydraulic jack, grasp so as to improve in operation process
The comfortableness of author.Have easy for installation, integrated level is high, save space, need not change hydraulic jack this body structure without
Its base other attachment means in parallel, easy to maintenance.
Description of the drawings
Fig. 1 is the schematic diagram of hydrocylinder buffering device of the present utility model.
Reference：1st, auxiliary hydraulic jack；2nd, principal arm hydraulic jack；3rd, the first balanced valve；4th, the second balanced valve；5th,
Three balanced valves；6th, the first electromagnetic proportion throttle；7th, the second electromagnetic proportion throttle；8th, the first three position four-way directional control valve；9th,
Three electromagnetic proportion throttles；10th, the 4th electromagnetic proportion throttle；11st, the second three position four-way directional control valve；12nd, the first electromagnetic valve；
13rd, the second electromagnetic valve；14th, the 3rd electromagnetic valve；15th, the 4th electromagnetic valve；16th, the first overflow valve；17th, the second overflow valve；18th, variable
Pump；19th, motor；20th, dosing pump；21st, fuel tank
Specific embodiment
Hydraulic oil pump buffer unit of the present utility model is further described below by way of specific embodiment, should
It is understood by, in embodiment in detail below, described content is only used for being further elucidated with said method of the present utility model,
And should not be construed as the restriction to method of the present utility model.
Embodiment one
Hydraulic jack buffer system as shown in Figure 1, wherein fuel tank 21 difference link variable pump 18 and dosing pump 20, variable
Motor 19 has been electrically connected on pump 18 and dosing pump 20, and the first overflow valve 16 and the second overflow valve 17 are connected to dosing pump
On 20 pipelines being connected with another fuel tank with variable pump 18.First electromagnetic valve 12 and the second electromagnetic valve 13 respectively with the one or three four
Logical reversal valve 8 and variable pump 18 and dosing pump 20 are electrically connected, the oil inlet P of variable pump 18 and the first three position four-way directional control valve 8
Connection, oil-out T are connected with another fuel tank.Two other opening A and B of the first three position four-way directional control valve 8 is flat with first respectively
Weighing apparatus valve 3 and the second balanced valve 4 are connected.Wherein the first balanced valve 3 is connected with the rodless cavity of auxiliary hydraulic jack 1, the second balance
Valve 4 is connected with the rod chamber of auxiliary hydraulic jack 1.The A mouths of the first three position four-way directional control valve 8 and the second electromagnetic proportion throttle 7
It is connected, the B mouths of the first three position four-way directional control valve 8 are connected with the first electromagnetic proportion throttle 6.
In folding-jib crane operation, by manipulating the handle of crane cabin, crane subsidiary arm withdraws, PLC (figures
Not shown in) detect arm action signal and the first electromagnetic valve 12 is connected and is controlled the valve element of the first three position four-way directional control valve 8
In left position, while driving variable pump 18 that fluid is fed to P mouths from fuel tank 21 by motor 19, and fluid is transported to from B mouths
Second balanced valve 4, now, the oil pressure in rod chamber increases, and in the presence of oil pressure, the valve body in auxiliary hydraulic jack 1 is to the left
Fluid in rodless cavity is pushed back fuel tank 21 by side shifting.While the first electromagnetic valve 12 is connected, the first and second electromagnetism ratio
Its valve core opening is set to empirical value by PLC controls by example choke valve 6 and 7 so that the first electromagnetic proportion throttle 6 is by auxiliary hydraulic pressure
Hydraulic shock energy when oil cylinder 1 starts is converted into thermal energy consumption, so as to improve stability when oil cylinder starts.
When crane cabin inner handle stop operation, PLC detects handle operation stop signal, makes the first electromagnetic valve
12 power-off, 8 valve element of the first three position four-way directional control valve return to middle position, and oil inlet and oil return pipeline is cut off, and the valve element of the first balanced valve 3 is opened
Mouth can be slowly closed because oil suction chamber is reduced with oil back chamber oil liquid pressure.While the first 12 power-off of electromagnetic valve, first and second
The valve core opening of electromagnetic proportion throttle 6,7 is constant, before 3 valve element of the first balanced valve is not completely enclosed, the second solenoid-operated proportional
Choke valve 7 can improve stability when oil cylinder stops and pipe to impacting into row buffering due to the return line that oil cylinder inertia is caused
The service life on road.After 3 valve element of the first balanced valve is completely enclosed, the valve element of the first and second electromagnetic proportion throttles 6,7 is opened
Mouth still maintains setting value, for carrying out decompression protection to hydraulic system.
Light, heavy duty knob is installed in hoister room, PLC can set hydraulic jack automatically according to different mode
The valve core opening of the first electromagnetic proportion throttle 6 under stopping action, so that enter row buffering to the impact of hydraulic jack intracavity.
The valve core opening of the first and second electromagnetic proportion throttles 6,7 when auxiliary hydraulic jack 1 starts, and negative in weight
Carry handling situations under, auxiliary hydraulic jack 1 stop when the first and second electromagnetic proportion throttles 6,7 valve core openings can basis
Equipment of itself situation and working environment are set in advance.
Embodiment two
Hydraulic jack buffer system as shown in Figure 1, wherein fuel tank 21 difference link variable pump 18 and dosing pump 20, variable
Motor 19 has been electrically connected on pump 18 and dosing pump 20, and the first overflow valve 16 and the second overflow valve 17 are connected to dosing pump
On 20 pipelines being connected with another fuel tank with variable pump 18.3rd electromagnetic valve 14 and the 4th electromagnetic valve 15 respectively with the two or three four
Logical reversal valve 11 and variable pump 18 and dosing pump 20 are electrically connected, the oil-in of variable pump 18 and the second three position four-way directional control valve 11
P connects, and oil-out T is connected with another fuel tank.Two other opening A and B of the second three position four-way directional control valve 11 is respectively with the 3rd
Balanced valve 3 and principal arm hydraulic jack 2 are connected.Wherein the 3rd balanced valve 5 is connected with the rodless cavity of principal arm hydraulic jack 2.Second
The A mouths of three position four-way directional control valve 11 are connected with the 4th electromagnetic proportion throttle 10, the B mouths of the second three position four-way directional control valve 11 and
Three electromagnetic proportion throttles 9 are connected.
In folding-jib crane operation, by manipulating the handle of crane cabin, main arm of crane withdraws, PLC (figures
Not shown in) detect arm action signal and the 3rd electromagnetic valve 14 is connected and is controlled the valve element of the second three position four-way directional control valve 11
In left position, while driving variable pump 18 that fluid is fed to P mouths from fuel tank 21 by motor 19, and fluid is transported to from B mouths
Make the increase of its oil pressure in rod chamber, in the presence of oil pressure, valve body in principal arm hydraulic jack 1 to the left side shifting by rodless cavity
Fluid push back fuel tank 21.While the 3rd electromagnetic valve 14 is connected, the 3rd and the 4th electromagnetic proportion throttle 9 and 10 by
Its valve core opening is set to empirical value by PLC controls so that when principal arm hydraulic jack 2 is started by the 3rd electromagnetic proportion throttle 9
Hydraulic shock energy is converted into thermal energy consumption, so as to improve stability when oil cylinder starts.
When crane cabin inner handle stop operation, PLC detects handle operation stop signal, makes the 3rd electromagnetic valve
14 power-off, 11 valve element of the second three position four-way directional control valve return to middle position, and oil inlet and oil return pipeline is cut off, the valve element of the 3rd balanced valve 5
Opening can be slowly closed because oil suction chamber is reduced with oil back chamber oil liquid pressure.While the 3rd 14 power-off of electromagnetic valve, the 3rd and
The valve core opening of four electromagnetic proportion throttles 9,10 is constant, before 5 valve element of the 3rd balanced valve is not completely enclosed, the 4th electromagnetism ratio
Example choke valve 10 can to being impacted into row buffering due to the return line that oil cylinder inertia is caused, improve stability when oil cylinder stops and
The service life of pipeline.After 5 valve element of the 3rd balanced valve is completely enclosed, the valve element of the third and fourth electromagnetic proportion throttle 9,10
Opening still maintains setting value, for carrying out decompression protection to hydraulic system.
Light, heavy duty knob is installed in hoister room, PLC can set hydraulic jack automatically according to different mode
The valve core opening of the 3rd electromagnetic proportion throttle 9 under stopping action, so that enter row buffering to the impact of hydraulic jack intracavity.
The valve core opening of the third and fourth electromagnetic proportion throttle 9,10 when principal arm hydraulic jack 2 starts, and in weight
Under load handling situations, the third and fourth electromagnetic proportion throttle valve element 9,10 when principal arm hydraulic jack 2 stops is open
Set according to equipment of itself situation and working environment in advance.
Embodiment described above only expresses embodiment of the present utility model, and its description is more concrete and detailed, but simultaneously
Therefore the restriction to this utility model the scope of the claims can not be interpreted as.It should be pointed out that the ordinary skill for this area
For personnel, without departing from the concept of the premise utility, some deformations and improvement can also be made, these belong to this
The protection domain of utility model.Therefore, the protection domain of this utility model patent should be defined by claims.
Claims (6)
1. a kind of hydrocylinder buffering device, it is characterised in that including hydraulic jack, variable pump, fuel tank, solenoid-operated proportional throttling
Valve, three position four-way directional control valve, electromagnetic valve and programmable logic controller (PLC), wherein, the first hydraulic fluid port of the hydraulic jack and second
Hydraulic fluid port is connected by pipeline with A, B mouth of the three position four-way directional control valve respectively, P, T mouth difference of the three position four-way directional control valve
Connect the variable pump and the fuel tank, the electromagnetic valve is connected to control the 3-position 4-way with the three position four-way directional control valve
The valve element movement of reversal valve, the electromagnetic proportion regulating are connected to the oil-in of the hydraulic jack and fuel-displaced
Mouthful, the valve element movement of electromagnetic proportion regulating described in the PLC controls.
2. hydrocylinder buffering device as claimed in claim 1, it is characterised in that also include balanced valve, the balanced valve sets
It is placed between the hydraulic jack and the three position four-way directional control valve.
3. hydrocylinder buffering device as claimed in claim 1, it is characterised in that the hydraulic jack include rod chamber and
Rodless cavity.
4. hydrocylinder buffering device as claimed in claim 1, it is characterised in that the programmable logic controller is according to pipe
Road pressure adjusts the scale parameter of the electromagnetic proportion throttle.
5. hydrocylinder buffering device as claimed in claim 1, it is characterised in that also include variable pump, dosing pump, motor with
And overflow valve, the motor is connected with the variable pump and the variable pump respectively.
6. hydrocylinder buffering device as claimed in claim 5, it is characterised in that the overflow valve is connected in parallel on the dosing pump
And the oil feed line of the variable pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621022237.0U CN206017323U (en) | 2016-08-31 | 2016-08-31 | A kind of hydrocylinder buffering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621022237.0U CN206017323U (en) | 2016-08-31 | 2016-08-31 | A kind of hydrocylinder buffering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206017323U true CN206017323U (en) | 2017-03-15 |
Family
ID=58257948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621022237.0U Expired - Fee Related CN206017323U (en) | 2016-08-31 | 2016-08-31 | A kind of hydrocylinder buffering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206017323U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194894A (en) * | 2016-08-31 | 2016-12-07 | 润邦卡哥特科工业有限公司 | A kind of hydrocylinder buffering device |
-
2016
- 2016-08-31 CN CN201621022237.0U patent/CN206017323U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194894A (en) * | 2016-08-31 | 2016-12-07 | 润邦卡哥特科工业有限公司 | A kind of hydrocylinder buffering device |
| CN106194894B (en) * | 2016-08-31 | 2018-11-30 | 润邦卡哥特科工业有限公司 | A kind of hydrocylinder buffering device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104477798B (en) | Main arm variable amplitude control system of crane and crane | |
| CN203532390U (en) | Hydraulic cylinder quick action loop and engineering machinery | |
| CN105697475B (en) | A kind of potential energy recycling system and method for high-order extractor | |
| CN104235090B (en) | Negative feedback hydraulic system and rotary drilling rig | |
| CN100441885C (en) | Hydraulic balance valve capable of automatically adapting load change | |
| CN104632736A (en) | Two-degree-of-freedom rocking platform and hydraulic system thereof | |
| CN106194894B (en) | A kind of hydrocylinder buffering device | |
| CN109914520B (en) | Energy-saving device for recycling potential energy of movable arm of excavator based on supercharger | |
| CN206017323U (en) | A kind of hydrocylinder buffering device | |
| CN105102732B (en) | The spool displacement changeable controller and control method of building machinery | |
| CN205618450U (en) | Hydraulic system divides fender energy storage ware energy recuperation device | |
| CN100535439C (en) | Mechanical automatic control hydraulic driving pumping unit | |
| CN206955583U (en) | A kind of vibration reduction and cushioning control system for being applied to fork installation load walking | |
| CN102616700B (en) | Oil and air hybrid driven lifting control device | |
| CN205953386U (en) | Dig rig hoist actuating system soon | |
| CN204692213U (en) | Side lifted type suction-type sewer scavenger hydraulic system | |
| CN204692218U (en) | Front act formula suction-type sewer scavenger hydraulic system | |
| CN108468672B (en) | Energy-saving hydraulic system of stepping heating furnace | |
| CN204572611U (en) | A kind of novel swing arm unloading valve | |
| CN202296922U (en) | Crane variable-amplitude control valve and crane variable-amplitude hydraulic system | |
| CN205331083U (en) | Cold recycling machine hoisting device's hydraulic system | |
| CN202301259U (en) | Balancing valve capable of compensating differential pressure | |
| CN206615795U (en) | A kind of stacking machine hydraulic cylinder apparatus for controlling of lifting | |
| CN102304931B (en) | Hydraulic energy-saving control system and method for loader movable arm | |
| CN211009326U (en) | Differentially-controlled mold opening and closing control loop of vulcanizing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170315 Termination date: 20190831 |