CN109322863A - A kind of Con casting ladle long water gap mechanical arm hydraulic system and its application method - Google Patents
A kind of Con casting ladle long water gap mechanical arm hydraulic system and its application method Download PDFInfo
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- CN109322863A CN109322863A CN201811436695.2A CN201811436695A CN109322863A CN 109322863 A CN109322863 A CN 109322863A CN 201811436695 A CN201811436695 A CN 201811436695A CN 109322863 A CN109322863 A CN 109322863A
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- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Fluid-Pressure Circuits (AREA)
Abstract
The present invention provides a kind of Con casting ladle long water gap mechanical arm hydraulic system and its application method, and long water gap mechanical arm hydraulic system includes: high pressure oil port, and high pressure oil port is used to provide high pressure oil to hydraulic system；Lifting cylinder, lifting cylinder includes rod chamber and rodless cavity, for implementing the action command of hydraulic system；The oil inlet of hand-operated direction valve, hand-operated direction valve is connected with high pressure oil port, and the first oil-feed port of hand-operated direction valve is connected by rod chamber pipeline with the rod chamber of lifting cylinder；The rodless cavity of lifting cylinder is connected by rodless cavity pipeline with high pressure oil port；Accumulator, accumulator are connected with rodless cavity and oil return opening respectively；Former three-way pressure reducing valve is directly removed and is increased the volume of accumulator by the present invention, so that the rodless cavity oil inlet of lifting cylinder is provided by accumulator completely with oil return, and increases by two normally closed high-pressure ball valves to accumulator pressurizing and pressure release；So that fault ratio of hydraulic pressure system is low, security performance is high, reduces the frequency of replacement three-way pressure reducing valve, saves cost.
Description
Technical field
The invention belongs to technical field of metallurgical equipment, and in particular to a kind of Con casting ladle long water gap mechanical arm hydraulic system and
Its application method.
Background technique
Con casting ladle long water gap mechanical arm is so that molten steel is normally introduced the important of tundish for fixing big packet long nozzle
Equipment.The manipulator is to make driving execution by hydraulic system, and the smooth centering ladle of long nozzle can be slided water by manipulator
Mouthful, manipulator does not reoperate after centering, but the big packet arm for position of casting must continue to decline, and long nozzle bottom end is pressed into pans steel
In water, guarantee steel quality, therefore manipulator lift cylinders must achieve the effect that be servo-actuated with ladle.
Existing manipulator hydraulic system breaks down repeatedly in use, causes to wrap casting failure greatly.Real operating condition
In, big packet adds nearly 130 tons of weight of molten steel, is acted on long nozzle lifting cylinder completely, original hydraulic system is long-term
In use process, there is biggish load, especially long nozzle oil cylinders to be forced to decline affected by a load for three-way pressure reducing valve
When, rodless cavity leans on three-way pressure reducing valve to carry out overflow oil return completely.Accumulator volume type selecting is too small, and the effect that pressure absorbs is little,
In addition the influence of work on the spot environment and oil, the probability of three-way pressure reducing valve failure increases, and leads to nothing in long nozzle cylinder efficient
Rod cavity not pressure maintaining, long nozzle fall off in the case where self weight, generate great safety accident.
Accordingly, it is desirable to provide it is a kind of for the insufficient Con casting ladle long water gap mechanical arm hydraulic system of the above-mentioned prior art and
Its application method.
Summary of the invention
The purpose of the present invention is to provide a kind of Con casting ladle long water gap mechanical arm hydraulic system and its application methods, so that
Solve the problems, such as that the three-way pressure reducing valve failure probability of current hydraulic system is big, high failure rate less.
To achieve the goals above, the invention provides the following technical scheme:
A kind of Con casting ladle long water gap mechanical arm hydraulic system, it is preferable that the long water gap mechanical arm hydraulic system includes:
High pressure oil port, the high pressure oil port are used to provide high pressure oil to the hydraulic system；
Lifting cylinder, the lifting cylinder include rod chamber and rodless cavity, and the movement for implementing the hydraulic system refers to
It enables；
Hand-operated direction valve, the oil inlet of the hand-operated direction valve are connected with the high pressure oil port, the hand-operated direction valve
First oil-feed port is connected by rod chamber pipeline with the rod chamber of the lifting cylinder；The rodless cavity of the lifting cylinder passes through nothing
Rod cavity pipeline is connected with the high pressure oil port；
Accumulator, the accumulator are connected with the rodless cavity and oil return opening respectively；
The lifting cylinder, rod chamber pipeline, rodless cavity pipeline, accumulator, oil return opening and high pressure oil port form long nozzle
Mechanical hand hydraulic circuit.
A kind of Con casting ladle long water gap mechanical arm hydraulic system as described above, it is preferable that also set on the rod chamber pipeline
There are hydraulic control one-way valve, the first one-way throttle valve, the second one-way throttle valve and third ball valve；The hydraulic control one-way valve is located at the hand
Between dynamic reversal valve and the lifting cylinder；The third ball valve is located at the front end of the lifting cylinder；Described first unidirectional section
Stream valve is located at the rear end of the hydraulic control one-way valve, and second one-way throttle valve is located at first one-way throttle valve and described the
Between three ball valves.
A kind of Con casting ladle long water gap mechanical arm hydraulic system as described above, it is preferable that also set on the rodless cavity pipeline
There are the 4th ball valve and the first ball valve, the 4th ball valve is arranged in parallel with the third ball valve, and the 4th ball valve is close to described
Lifting cylinder；First ball valve is far from the lifting cylinder and first ball valve is located at the 4th ball valve and the no bar
Between the end of chamber.
A kind of Con casting ladle long water gap mechanical arm hydraulic system as described above, it is preferable that the long water gap mechanical arm is hydraulic
System further includes pressure-measuring pipe road and accumulation of energy pipeline, and the first end on the pressure-measuring pipe road is connected with the oil return opening, the pressure-measuring pipe
The second end on road is connected with pressure gauge；The second ball valve is equipped between the first end and the pressure gauge on the pressure-measuring pipe road, it is described
Second ball valve is arranged in parallel with first ball valve；One end of the accumulation of energy pipeline is connected on the rodless cavity pipeline, and is stored
Between the first ball valve and the 4th ball valve, the other end of the accumulation of energy pipeline is connected for the junction of energy pipeline and rodless cavity pipeline
There is accumulator；
Preferably, the accumulation of energy pipeline and the pressure-measuring pipe road are connected between second ball valve and the pressure gauge.
A kind of Con casting ladle long water gap mechanical arm hydraulic system as described above, it is preferable that the first of the hand-operated direction valve
Oil-feed port is connected to the main hydraulic fluid port of the hydraulic control one-way valve, the second oil-feed port and the hydraulic control one-way valve of the hand-operated direction valve
Drain tap connection.
A kind of Con casting ladle long water gap mechanical arm hydraulic system as described above, it is preferable that also set on the rod chamber pipeline
There is the first pressure-measuring head, first pressure-measuring head is between the third ball valve and second one-way throttle valve；The no bar
Lumen road is additionally provided with the second pressure-measuring head, and second pressure-measuring head is between the 4th ball valve and first ball valve；
Preferably, first pressure-measuring head is arranged in parallel with second pressure-measuring head.
A kind of Con casting ladle long water gap mechanical arm hydraulic system as described above, it is preferable that first one-way throttle valve by
First check valve and first throttle valve are connected in parallel, and second one-way throttle valve is by second one-way valve and second throttle
It is connected in parallel；The circulating direction of first check valve is the rod chamber of the lifting cylinder to the high pressure oil port side
To；The circulating direction of the second one-way valve is the high pressure oil port to the rod chamber direction of the lifting cylinder.
The present invention also provides a kind of application methods of Con casting ladle long water gap mechanical arm hydraulic system, it is preferable that described to make
Included the following steps: with method
Step 1, the vertical motion of lifting cylinder:
When lifting cylinder does vertical motion, the 4th ball valve of holding is open state, the rodless cavity of accumulator and lifting cylinder
Connection rises pressure supply for lifting cylinder, while shifting hand-operated direction valve onto b, and the high pressure oil that high pressure oil port provides is as hydraulic control
The control oil of check valve, hydraulic control one-way valve is opened, the epicoele of lifting cylinder is connected to the return port, is formed into a loop, in completion
Rise movement；
Step 2, the lowering action of lifting cylinder:
When lifting cylinder does lowering action, the first ball valve, the second ball valve are closed, pushes hand-operated direction valve to a, high pressure oil
Mouth is connected to the rod chamber of lifting cylinder, and accumulator is connected to the rodless cavity of lifting cylinder；Pass through the pressure of lifting cylinder upper and lower cavity
The oil liquid of cavity of resorption is forced back accumulator, completes lowering action by difference；
Step 3, the servo-actuated movement of lifting cylinder:
When lifting cylinder is servo-actuated, on the piston rod that ambient pressure acts on lifting cylinder, lifting cylinder epicoele is inhaled automatically
The oil liquid of oil return opening oil pipe is played, cavity of resorption oil liquid forces back accumulator, completes servo-actuated movement.
The application method of Con casting ladle long water gap mechanical arm hydraulic system as described above, it is preferable that the step 1 it
It is preceding also to cope with accumulator pressurizing, the 4th ball valve and the second ball valve are closed when pressurising, open the first ball valve, hand-operated direction valve is pushed into
Middle position, for high pressure oil port to accumulator pressurizing, the Plenum Process moment pays attention to the scale variation of pressure gauge, energy storage pressure reaches 10~
When 13Mpa, stop pressurising, satisfaction acts demand.
The application method of Con casting ladle long water gap mechanical arm hydraulic system as described above, it is preferable that the lifting cylinder is done
It throttles when vertical motion by the first one-way throttle valve, the lifting cylinder throttles when doing lowering action by the second one-way throttle valve.
Compared with the immediate prior art, technical solution provided by the invention has following excellent effect:
Former three-way pressure reducing valve is directly removed and is increased the volume of accumulator by the present invention so that the rodless cavity of lifting cylinder into
Oil is provided by accumulator completely with oil return, and increases by two normally closed high-pressure ball valves to accumulator pressurizing and pressure release；The present invention mentions
The fault ratio of hydraulic pressure system of confession is low, and security performance is high, reduces the frequency of replacement three-way pressure reducing valve, saves cost.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.Wherein:
Fig. 1 is the Con casting ladle long water gap mechanical arm hydraulic schematic of the embodiment of the present invention；
Fig. 2 is the Con casting ladle long water gap mechanical arm hydraulic schematic of the prior art.
In figure: 1, lifting cylinder；2, high pressure oil port；3, oil return opening；4, hand-operated direction valve；5, hydraulic control one-way valve；6, first
One-way throttle valve；7, the second one-way throttle valve；8, the first pressure-measuring head；9, third ball valve；10, the first ball valve；11, second pressure is surveyed
Head；12, the 4th ball valve；13, pressure gauge；14, accumulator；15, the second ball valve；16, accumulation of energy pipeline；17, pressure-measuring pipe road；18, nothing
Rod cavity pipeline；19, rod chamber pipeline；20, three-way pressure reducing valve；41, oil inlet；42, the first oil-feed port；43, the second oil-feed port；
44, third oil-feed port；51, drain tap.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that in the feelings not conflicted
Under condition, the features in the embodiments and the embodiments of the present application be can be combined with each other.
In the description of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the present invention rather than require the present invention that must be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.Term used in the present invention " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected,
It may be a detachable connection；It can be directly connected, can also be indirectly connected by intermediate member, for the common of this field
For technical staff, the concrete meaning of above-mentioned term can be understood as the case may be.
As shown in Fig. 2, being the working principle diagram of prior art original hydraulic system, the piston boit of lifting cylinder 1 rises at this time
Process are as follows:
System pressure is set as 180Mpa, it is 10Mpa that three-way pressure reducing valve 20, which adjusts pressure, and it is dynamic to meet the rising of lifting cylinder 1
It is required.Hand-operated direction valve 4 shifts b onto when doing vertical motion, on the one hand the high pressure oil that high pressure oil port 2 provides is depressurized by threeway
Valve 20 enters the rodless cavity of lifting cylinder 1 after depressurizing, on the other hand as the control oil of hydraulic control one-way valve 5, by hydraulic control one-way valve 5
It opens, the rod chamber of lifting cylinder 1 is communicated with oil return opening 3, is formed into a loop.
The decline process of lifting cylinder 1 at this time are as follows:
When hand-operated direction valve 4 shifts a onto, the high pressure oil that high pressure oil port 2 provides is by reversal valve through entering having for lifting cylinder 1
Rod cavity is 10MPa since three-way pressure reducing valve 20 adjusts pressure, and the rodless cavity of lifting cylinder 1 is risen by 20 oil return of three-way pressure reducing valve
Drop oil cylinder 1 does lowering action.
The servomechanism process of lifting cylinder 1 at this time are as follows:
After long nozzle centering, changes hand-operated direction valve 4 and return middle position, rodless cavity and 2 phase of high pressure oil port of lifting cylinder 1
It is logical that long nozzle is made to be close to big packet tapping hole, while big packet arm starts to do lowering action, due to the effect of pressure difference, long nozzle lifting
Oil cylinder 1 is forced to decline under great external force, and the oil inlet of rod chamber is provided by check valve from 3 self-priming of oil return opening, lifting cylinder 1
Rodless cavity end communicated with oil return opening 3 by 20 mouthfuls of three-way pressure reducing valve, forming circuit.
Original hydraulic system uses good in first service stage in the prior art, but after use after a period of time, warp
It often appears in casting process, 1 rodless cavity decompression of long nozzle lifting cylinder, causes long nozzle and big packet tapping hole to disengage, formed
Casting is opened wide, steel quality is seriously affected, is forced to stop pouring.
By analysis, with the increase of the flow by pressure reducing valve when three-way pressure reducing valve 20 depressurizes, three-way pressure reducing valve 20 is main
Valve is open bigger (spillway discharge on overflow road can be ignored substantially), and pressure drop can become smaller, so the output pressure of three-way pressure reducing valve 20
It can be become smaller (relative to setting value)；When load 12 is to be raised, the opening of three-way pressure reducing valve 20 becomes smaller, and pressure drop becomes larger, when load end 0
Flow output, at this time by three-way pressure reducing valve 20 tiny flow quantity can all from overflow road, road overflow be fallen, this is three-way pressure reducing valve
One of the main reason for 20 fever, decompression output are real setting value.When there is external disturbance in load end, increases suddenly,
20 main valve plug of three-way pressure reducing valve can be moved further, become threeway overflow valve to oil return by high pressure oil port 2 to threeway overflow valve
There is overflow oil return at this time in mouth 3, and flow can be much larger than the overflow road spillway discharge of guide's Decompression Controlling, with the increasing of flow
Greatly, oil pressure relief can increase.
And in real operating condition, big packet adds nearly 130 tons of weight of molten steel, act on completely long nozzle lifting cylinder 1 it
On, in the long-term use, there is biggish loads for three-way pressure reducing valve 20, especially for original hydraulic system of the prior art
Long nozzle oil cylinder it is affected by a load be forced decline when, rodless cavity lean on completely three-way pressure reducing valve 20 carry out overflow oil return.Accumulation of energy
14 volume type selecting of device is too small, and the effect that pressure absorbs is little, in addition the influence of work on the spot environment and oil, three-way pressure reducing valve 20
The probability of failure increases, and leads to rodless cavity not pressure maintaining in long nozzle cylinder efficient, long nozzle falls off in the case where self weight.
In order to overcome technological deficiency existing for the hydraulic system of the prior art as shown in Figure 1, specific embodiments of the present invention
A kind of Con casting ladle long water gap mechanical arm hydraulic system is provided, long water gap mechanical arm hydraulic system includes: high pressure oil port 2, high
Press oil port 2 is used to provide high pressure oil to hydraulic system；Lifting cylinder 1, lifting cylinder 1 includes rod chamber and rodless cavity, for real
Apply the action command of hydraulic system；Hand-operated direction valve 4, the oil inlet 41 and high pressure oil port 2 of hand-operated direction valve 4 are connected, change manually
It is connected to the first oil-feed port 42 of valve 4 by rod chamber pipeline 19 with the rod chamber of lifting cylinder 1；The rodless cavity of lifting cylinder 1
It is connected by rodless cavity pipeline 18 and high pressure oil port 2；Accumulator 14, accumulator 14 are connected with rodless cavity and oil return opening 3 respectively；It rises
It drops oil cylinder 1, rod chamber pipeline 19, rodless cavity pipeline 18, accumulator 14, oil return opening 3 and high pressure oil port 2 and forms long water gap mechanical arm
Hydraulic circuit.
According to a particular embodiment of the invention, hydraulic control one-way valve 5, the first one-way throttle valve are additionally provided on rod chamber pipeline 19
6, the second one-way throttle valve 7 and third ball valve 9；Hydraulic control one-way valve 5 is between hand-operated direction valve 4 and lifting cylinder 1；Third ball
Valve 9 is located at the front end of lifting cylinder 1；First one-way throttle valve 6 is located at 5 rear end of hydraulic control one-way valve, and the second one-way throttle valve 7 is located at
Between first one-way throttle valve 6 and third ball valve 9.The 4th ball valve 12 and the first ball valve 10 are additionally provided on rodless cavity pipeline 18, the
Four ball valves 12 are arranged in parallel with third ball valve 9, and the 4th ball valve 12 is close to lifting cylinder 1；First ball valve 10 far from lifting cylinder 1 and
First ball valve 10 is between the 4th ball valve 12 and the end of rodless cavity.
According to a particular embodiment of the invention, long water gap mechanical arm hydraulic system further includes pressure-measuring pipe road 17 and accumulation of energy pipeline
16, the first end and oil return opening 3 on pressure-measuring pipe road 17 are connected, and the second end on pressure-measuring pipe road 17 is connected with pressure gauge 13；Pressure-measuring pipe road
The second ball valve 15 is equipped between 17 first end and pressure gauge 13, the second ball valve 15 is arranged in parallel with the first ball valve 10, accumulation of energy pipe
The one end on road 16 is connected on rodless cavity pipeline 18, and the junction of accumulation of energy pipeline 16 and rodless cavity pipeline 18 is located at the first ball
Between valve 10 and the 4th ball valve 12, the other end of accumulation of energy pipeline 16 is connected with accumulator 14；Accumulation of energy pipeline 16 and pressure-measuring pipe road 17
It is connected between the second ball valve 15 and pressure gauge 13.The main hydraulic fluid port of first oil-feed port 42 and hydraulic control one-way valve 5 of hand-operated direction valve 4
Connection, the second oil-feed port 43 of hand-operated direction valve 4 are connected to the drain tap 51 of hydraulic control one-way valve 5.Third oil-feed port 44 and oil return
Mouth 3 is connected to.
According to a particular embodiment of the invention, the first pressure-measuring head 8, the first pressure-measuring head 8 are additionally provided on rod chamber pipeline 19
Between third ball valve 9 and the second one-way throttle valve 7；The second pressure-measuring head 11, the second pressure-measuring head are additionally provided on rodless cavity pipeline 18
11 between the 4th ball valve 12 and the first ball valve 10；Preferably, the first pressure-measuring head 8 is arranged in parallel with the second pressure-measuring head 11.The
One one-way throttle valve 6 is connected in parallel by the first check valve and first throttle valve, and the second one-way throttle valve 7 is by second one-way valve
It is connected in parallel with second throttle；The circulating direction of first check valve is the rod chamber of lifting cylinder 1 to 2 side of high pressure oil port
To；The circulating direction of second one-way valve is high pressure oil port 2 to the rod chamber direction of lifting cylinder 1.
According to a particular embodiment of the invention, a kind of application method of Con casting ladle long water gap mechanical arm hydraulic system, makes
Included the following steps: with method
Step 1, the vertical motion of lifting cylinder:
When lifting cylinder 1 does vertical motion, the 4th ball valve 12 of holding is open state, accumulator 14 and lifting cylinder 1
Rodless cavity connection rises pressure supply for lifting cylinder 1, while shifting hand-operated direction valve 4 onto b, the high pressure oil that high pressure oil port 2 provides
As the control oil of hydraulic control one-way valve 5, hydraulic control one-way valve 5 is opened, the epicoele of lifting cylinder 1 is connected to oil return opening 3, is formed
Vertical motion is completed in circuit；
Step 2, the lowering action of lifting cylinder:
When lifting cylinder do lowering action, the first ball valve 10, the second ball valve 15 are closed, pushes hand-operated direction valve 4 to a,
High pressure oil port 2 is connected to the rod chamber of lifting cylinder 1, and accumulator 14 is connected to the rodless cavity of lifting cylinder 1；Pass through lifting cylinder
The oil liquid of cavity of resorption is forced back accumulator 14, completes lowering action by the pressure difference of 1 upper and lower cavity；
Step 3, the servo-actuated movement of lifting cylinder:
When lifting cylinder is servo-actuated, on the piston rod that ambient pressure acts on lifting cylinder 1,1 epicoele of lifting cylinder is automatic
The oil liquid of 3 oil pipe of oil return opening is picked up, cavity of resorption oil liquid forces back accumulator 14, completes servo-actuated movement.
Also cope with 14 pressurising of accumulator before step 1, when pressurising closes the 4th ball valve 12 and the second ball valve 15, opens
Hand-operated direction valve 4 is pushed into middle position by the first ball valve 10, and high pressure oil port 2 pays attention to pressure to 14 pressurising of accumulator, Plenum Process moment
The scale of table 13 changes, and when 14 pressure of accumulator reaches 10~13Mpa, stops pressurising, satisfaction acts demand.Lifting cylinder is done
It throttles when rising movement by the first one-way throttle valve 6, lifting cylinder throttles when doing lowering action by the second one-way throttle valve 7.
According to a particular embodiment of the invention, high is wanted to the required precision of oil liquid due to three-way pressure reducing valve 20, and opposite
Costly in reversal valve price, therefore the present embodiment directly removes former three-way pressure reducing valve 20, increases the volume of accumulator 14,
It allows the oil inlet of rodless cavity to be provided completely by accumulator 14 with oil return, 14 pressure supply of accumulator is leaned on when lifting cylinder 1 rises, when decline leans on
Oil return is pushed back accumulator 14 by system pressure and the pressure difference of 14 pressure of accumulator, and oil return is pushed back accumulator by loading forces when servo-actuated
14.And install two normally closed high-pressure ball valves additional, play the role of to 14 pressurising of accumulator and release, passes through rod chamber and rodless cavity
Area ratio calculates, and 10~13MPa of preliminary filling meets action request.It should be noted that the instruction of pressure gauge 13 is paid close attention to when pressurising,
Not to be charged to it is equal with system pressure, due to rod chamber area be less than rodless cavity area can not do lowering action.Meanwhile according to existing
Field actual condition can install safety overflow valve additional by accumulator 14 again, improve safety and the guarantor of accumulator 14 if condition has
Demonstrate,prove the stability of hydraulic circuit work.
According to a particular embodiment of the invention, the present invention be directed to existing system defect, three-way pressure reducing valve 20 there is compared with
Big load, especially long nozzle lifting cylinder 1 it is affected by a load be forced decline when, rodless cavity leans on three-way pressure reducing valve completely
20 carry out overflow oil return, in addition the influence of work on the spot environment and oil, the probability that three-way pressure reducing valve 20 fails increases, and cause to grow
Rodless cavity not pressure maintaining in the work of mouth of a river lifting cylinder 1, long nozzle such as fall off at the failures in the case where self weight.Due to three-way pressure reducing valve
The required precision of 20 pairs of oil liquid wants high, and costly relative to reversal valve price, therefore the present invention is by former three-way pressure reducing valve
20 directly remove, and increase the volume of accumulator 14, the oil inlet of 1 rodless cavity of lifting cylinder is allowed to be mentioned completely by accumulator 14 with oil return
For.14 pressure supply of accumulator is leaned on when rising, oil return is pushed back accumulator by pressure difference when decline by system pressure and 14 pressure of accumulator
14, oil return is pushed back accumulator 14 by loading forces when servo-actuated.And install two normally closed high-pressure ball valves additional, it plays and gives accumulator 14 pressurising
With the effect of release；
To sum up, former three-way pressure reducing valve 20 is directly removed and is increased the volume of accumulator 14 by the present invention, so that lifting cylinder 1
Rodless cavity oil inlet provided completely by accumulator 14 with oil return, and increase by two normally closed high-pressure ball valves to 14 pressurising of accumulator and
Pressure release；Fault ratio of hydraulic pressure system provided by the invention is low, and security performance is high, reduces the frequency of replacement three-way pressure reducing valve 20, section
Cost-saving.Improved system is more simple and clear, and cost of manufacture is lower, and maintenance is more convenient.And the control loop makes accumulator
14 effect obtains the performance more into one layer, is primary bold innovation and application.The present invention is after field conduct, hydraulic system
The number of stoppages of appearance is greatly reduced, and also improves production efficiency, is reduced costs.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of Con casting ladle long water gap mechanical arm hydraulic system, which is characterized in that the long water gap mechanical arm hydraulic system packet
It includes:
High pressure oil port, the high pressure oil port are used to provide high pressure oil to the hydraulic system；
Lifting cylinder, the lifting cylinder includes rod chamber and rodless cavity, for implementing the action command of the hydraulic system；
Hand-operated direction valve, the oil inlet of the hand-operated direction valve are connected with the high pressure oil port, and the first of the hand-operated direction valve
Oil-feed port is connected by rod chamber pipeline with the rod chamber of the lifting cylinder；The rodless cavity of the lifting cylinder passes through rodless cavity
Pipeline is connected with the high pressure oil port；
Accumulator, the accumulator are connected with the rodless cavity and oil return opening respectively；
It is mechanical that the lifting cylinder, rod chamber pipeline, rodless cavity pipeline, accumulator, oil return opening and high pressure oil port form long nozzle
Hand hydraulic circuit.
2. a kind of Con casting ladle long water gap mechanical arm hydraulic system as described in claim 1, which is characterized in that the rod chamber
Hydraulic control one-way valve, the first one-way throttle valve, the second one-way throttle valve and third ball valve are additionally provided on pipeline；The hydraulic control one-way valve
Between the hand-operated direction valve and the lifting cylinder；The third ball valve is located at the front end of the lifting cylinder；It is described
First one-way throttle valve is located at the rear end of the hydraulic control one-way valve, and second one-way throttle valve is located at first one-way throttle
Between valve and the third ball valve.
3. a kind of Con casting ladle long water gap mechanical arm hydraulic system as claimed in claim 2, which is characterized in that the rodless cavity
The 4th ball valve and the first ball valve are additionally provided on pipeline, the 4th ball valve is arranged in parallel with the third ball valve, the 4th ball
Valve is close to the lifting cylinder；First ball valve is far from the lifting cylinder and first ball valve is located at the 4th ball valve
Between the end of the rodless cavity.
4. a kind of Con casting ladle long water gap mechanical arm hydraulic system as described in claim 1, which is characterized in that the long nozzle
Mechanical hand hydraulic system further includes pressure-measuring pipe road and accumulation of energy pipeline, and the first end on the pressure-measuring pipe road is connected with the oil return opening,
The second end on the pressure-measuring pipe road is connected with pressure gauge；Second is equipped between the first end and the pressure gauge on the pressure-measuring pipe road
Ball valve, second ball valve are arranged in parallel with first ball valve；One end of the accumulation of energy pipeline is connected to the rodless cavity pipe
On the road, and the junction of accumulation of energy pipeline and rodless cavity pipeline is between the first ball valve and the 4th ball valve, the accumulation of energy pipeline
The other end is connected with accumulator；
Preferably, the accumulation of energy pipeline and the pressure-measuring pipe road are connected between second ball valve and the pressure gauge.
5. a kind of Con casting ladle long water gap mechanical arm hydraulic system as claimed in claim 2, which is characterized in that described to change manually
The main hydraulic fluid port of the first oil-feed port and the hydraulic control one-way valve to valve is connected to, the second oil-feed port of the hand-operated direction valve with it is described
The drain tap of hydraulic control one-way valve is connected to.
6. a kind of Con casting ladle long water gap mechanical arm hydraulic system as claimed in claim 3, which is characterized in that the rod chamber
Be additionally provided with the first pressure-measuring head on pipeline, first pressure-measuring head be located at the third ball valve and second one-way throttle valve it
Between；The second pressure-measuring head is additionally provided on the rodless cavity pipeline, second pressure-measuring head is located at the 4th ball valve and described first
Between ball valve；
Preferably, first pressure-measuring head is arranged in parallel with second pressure-measuring head.
7. a kind of Con casting ladle long water gap mechanical arm hydraulic system as claimed in claim 2, which is characterized in that described first is single
Be connected in parallel to throttle valve by the first check valve and first throttle valve, second one-way throttle valve by second one-way valve and
Second throttle is connected in parallel；The circulating direction of first check valve is the rod chamber of the lifting cylinder to the height
Press oil port direction；The circulating direction of the second one-way valve is the high pressure oil port to the rod chamber direction of the lifting cylinder.
8. a kind of application method of Con casting ladle long water gap mechanical arm hydraulic system as described in any one of claim 1 to 7,
It is characterized in that, the application method includes the following steps:
Step 1, the vertical motion of lifting cylinder:
When lifting cylinder does vertical motion, the 4th ball valve of holding is open state, and accumulator is connected to the rodless cavity of lifting cylinder,
Rise pressure supply for lifting cylinder, while shifting hand-operated direction valve onto b, the high pressure oil that high pressure oil port provides is as hydraulic control one-way valve
Control oil, hydraulic control one-way valve is opened, the epicoele of lifting cylinder is connected to the return port, be formed into a loop, complete vertical motion；
Step 2, the lowering action of lifting cylinder:
When lifting cylinder does lowering action, close the first ball valve, the second ball valve, push hand-operated direction valve to a, high pressure oil port and
The rod chamber of lifting cylinder is connected to, and accumulator is connected to the rodless cavity of lifting cylinder；It, will by the pressure difference of lifting cylinder upper and lower cavity
The oil liquid of cavity of resorption forces back accumulator, completes lowering action；
Step 3, the servo-actuated movement of lifting cylinder:
When lifting cylinder is servo-actuated, on the piston rod that ambient pressure acts on lifting cylinder, lifting cylinder epicoele picks up back automatically
The oil liquid of hydraulic fluid port oil pipe, cavity of resorption oil liquid force back accumulator, complete servo-actuated movement.
9. the application method of Con casting ladle long water gap mechanical arm hydraulic system as claimed in claim 8, which is characterized in that in institute
It states and also copes with accumulator pressurizing before step 1, when pressurising closes the 4th ball valve and the second ball valve, opens the first ball valve, will be manual
Reversal valve is pushed into middle position, and for high pressure oil port to accumulator pressurizing, the Plenum Process moment pays attention to the scale variation of pressure gauge, accumulator pressure
When power reaches 10~13Mpa, stop pressurising, satisfaction acts demand.
10. the application method of Con casting ladle long water gap mechanical arm hydraulic system as claimed in claim 8, which is characterized in that institute
It states when lifting cylinder does vertical motion and throttles by the first one-way throttle valve, the lifting cylinder does unidirectional by second when lowering action
Throttle valve throttling.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811436695.2A CN109322863B (en) | 2018-11-28 | 2018-11-28 | Continuous casting ladle long nozzle manipulator hydraulic system and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811436695.2A CN109322863B (en) | 2018-11-28 | 2018-11-28 | Continuous casting ladle long nozzle manipulator hydraulic system and use method thereof |
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| CN109322863A true CN109322863A (en) | 2019-02-12 |
| CN109322863B CN109322863B (en) | 2023-08-18 |
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| CN201811436695.2A Active CN109322863B (en) | 2018-11-28 | 2018-11-28 | Continuous casting ladle long nozzle manipulator hydraulic system and use method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283187A (en) * | 2019-07-25 | 2021-01-29 | 上汽通用五菱汽车股份有限公司 | Air channel control device of vehicle door dismounting manipulator |
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| JP2003112248A (en) * | 2001-10-04 | 2003-04-15 | Ube Techno Enji Kk | Injection method for die-casting machine |
| CN101074685A (en) * | 2007-07-11 | 2007-11-21 | 杭州和利时自动化有限公司 | Self-capacitance electrohydraulic executor |
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| CN112283187A (en) * | 2019-07-25 | 2021-01-29 | 上汽通用五菱汽车股份有限公司 | Air channel control device of vehicle door dismounting manipulator |
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| CN109322863B (en) | 2023-08-18 |
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Effective date of registration: 20200415 Address after: 435001 Huangshi Road, Hubei, Huangshi, No. 316 Applicant after: Daye Special Steel Co.,Ltd. Address before: 435001 Huangshi Road, Hubei, Huangshi, No. 316 Applicant before: DAYE SPECIAL STEEL Co.,Ltd. |
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