CN209430225U - A kind of hydraulic vertical prop stepped down with the quick energy-absorbing of accumulator - Google Patents
A kind of hydraulic vertical prop stepped down with the quick energy-absorbing of accumulator Download PDFInfo
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- CN209430225U CN209430225U CN201920030167.0U CN201920030167U CN209430225U CN 209430225 U CN209430225 U CN 209430225U CN 201920030167 U CN201920030167 U CN 201920030167U CN 209430225 U CN209430225 U CN 209430225U
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- vertical prop
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- resorption
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Abstract
The utility model discloses a kind of hydraulic vertical props stepped down with the quick energy-absorbing of accumulator, including hydraulic vertical prop, for the hydraulic support height where adjusting post and bear load；Lift control system is connect with hydraulic vertical prop, for controlling the working fluid direction of hydraulic vertical prop and lockking the liquid of hydraulic vertical prop cavity of resorption；Quick energy-absorbing component, connect with hydraulic vertical prop, and the highly pressurised liquid of hydraulic vertical prop cavity of resorption is discharged when pressing for storing and discharging impact, improves the instantaneous flow of discharge hydraulic vertical prop cavity of resorption.The utility model introduces accumulator in hydraulic vertical prop and realizes that quick energy-absorbing allows pressure, when bump occurs, accumulator storage safety valve fails the highly pressurised liquid being discharged in time, improve the instantaneous flow of hydraulic vertical prop column cavity of resorption off-load when bump occurs, the through-current capability of safety valve is improved indirectly, prevent hydraulic vertical prop because safety valve off-load flow is small lead to column cavity of resorption hypertonia due to caused by supporting fail, improve the shock resistance of hydraulic vertical prop.
Description
Technical field
The utility model belongs to the technical field of coal mine erosion control supporting, more particularly to a kind of quick energy-absorbing of accumulator that has allows
The hydraulic vertical prop of position.
Background technique
Bump is one of the most serious disaster encountered in coal production, and the generation of bump has instantaneity, dashes forward
Hair property and destructiveness, the big energy release of simultaneous, enormous impact can act on coal and rock and tunnel, cause coal and rock
Broken and tunnel and its Support structure damage.Hydraulic vertical prop has the characteristics that strong support force and pressure adjustable, is applied by wide model
In coal mine support, hydraulic vertical prop is the main load bearing component during coal mine support, and the shock resistance of column sets supporting
The safety and reliability of standby or even entire working face plays a crucial role.
Since mining depth is continuously increased, crustal stress is increased, for the enabling capabilities for improving hydraulic vertical prop, hydraulic vertical prop
Cylinder diameter also increases with it, and when bump comes temporarily, since impact velocity is big, this requires pacify when hydraulic vertical prop off-load drain
Full valve is capable of providing the instantaneous flow of Liter Per Minutes up to ten thousand.But the current maximum rated flow of mine safety valve only has 1000L/min,
Far from the requirement met when bump accident occurs to safety valve instantaneous flow, and high-flow safety valve research and development encounter acutely
The problems such as vibration.
Utility model content
Based on the above the deficiencies in the prior art, the technical issues of the utility model is solved, is to provide a kind of with accumulation of energy
The hydraulic vertical prop that the quick energy-absorbing of device is stepped down, prevent hydraulic vertical prop because safety valve off-load flow is small lead to column cavity of resorption hypertonia due to
Caused by supporting fail, improve the shock resistance of hydraulic vertical prop.
In order to solve the above-mentioned technical problem, the utility model is achieved through the following technical solutions: the utility model provides
A kind of hydraulic vertical prop stepped down with the quick energy-absorbing of accumulator, hydraulic vertical prop, for adjusting the hydraulic support where hydraulic vertical prop
Height and receiving load；
Lift control system is connect with the hydraulic vertical prop, including directional control valve and hydraulic control one-way valve, for controlling liquid
It presses the working fluid direction of column and locks the liquid of hydraulic vertical prop cavity of resorption；
Quick energy-absorbing component, connect, including check valve, accumulator and safety valve with the hydraulic vertical prop, for store with
Release impact improves the instantaneous flow of discharge hydraulic vertical prop cavity of resorption come the highly pressurised liquid of discharge hydraulic vertical prop cavity of resorption when pressing.
Further, the accumulator and safety valve are connected to by the check valve with hydraulic vertical prop cavity of resorption；
The safety valve is connect by the check valve with hydraulic vertical prop cavity of resorption, is come for changing set pressure for safety valve
The working resistance of adjusting post；
The accumulator is connected with the safety valve, fails the height being discharged in time for storing impact come safety valve when pressing
Press liquid improves the instantaneous flow that hydraulic vertical prop cavity of resorption is discharged when bump occurs for column.
Optionally, the directional control valve is connected between hydraulic vertical prop and emulsion power pack, for controlling hydraulic vertical prop
Working fluid flow direction；
The hydraulic control one-way valve is connected between the directional control valve and hydraulic vertical prop cavity of resorption, for controlling the list of liquid
To flowing, the liquid of hydraulic vertical prop cavity of resorption is lockked, column is made to be parked in the working depth of requirement.
Further, the directional control valve is three-position four-way electromagnetic directional valve, the valve of the three-position four-way electromagnetic directional valve
There are three operating positions for core；
The three-position four-way electromagnetic directional valve there are four valve port, respectively with emulsion power pack, fuel tank, hydraulic vertical prop epicoele and
The connection of hydraulic vertical prop cavity of resorption.
Further, the hydraulic control one-way valve has control port, for controlling the reverse circulated of liquid.
By upper, the hydraulic vertical prop combination accumulator energy-absorbing stepped down with the quick energy-absorbing of accumulator of the utility model stores high
The characteristics of press liquid, introduces accumulator in hydraulic vertical prop and realizes that quick energy-absorbing allows pressure, and when bump occurs, accumulator is stored
Safety valve fails the highly pressurised liquid being discharged in time, improves the instantaneous stream of hydraulic vertical prop column cavity of resorption off-load when bump occurs
Amount improves the through-current capability of safety valve indirectly, prevents hydraulic vertical prop from leading to cavity pressure mistake under column because safety valve off-load flow is small
It is high and caused by supporting fail, improve the shock resistance of hydraulic vertical prop.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and being implemented in accordance with the contents of the specification, and in order to allow the above and other purpose, feature of the utility model
It can be more clearly understood with advantage, below in conjunction with preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, the attached drawing of embodiment will be made below simple
Ground introduction.
Fig. 1 is the schematic diagram of the hydraulic vertical prop stepped down with the quick energy-absorbing of accumulator of the utility model；
Fig. 2 is the schematic diagram of the hydraulic vertical prop stepped down with the quick energy-absorbing of accumulator of the utility model.
Specific embodiment
The specific embodiment that according to the present invention will be described in detail below with reference to the accompanying drawings, as part of this specification,
Illustrate that the principles of the present invention, other aspect, feature and its advantages of the utility model are detailed by this by embodiment
Illustrate to become apparent.In the attached drawing of institute's reference, the same or similar component is used identical attached in different figures
Figure grade indicates.
As depicted in figs. 1 and 2, the hydraulic vertical prop stepped down with the quick energy-absorbing of accumulator of the utility model includes hydraulic vertical
Column, the movable post 1 moved up and down in the hydraulic vertical prop and in it, lift control system and quick energy-absorbing component, wherein
The hydraulic vertical prop of the utility model is double-action hydraulic column, for adjusting 1 place hydraulic support height of movable post and bearing load,
Roof pressure acts in movable post 1, by change in hydraulic vertical prop epicoele 2 and hydraulic vertical prop cavity of resorption 3 pressure of working fluid and
Direction extends and retracts to realize that support height is adjusted control movable post 1, and hydraulic vertical prop pattern is single-piston rod-type or to stretch
Contracting formula, Fig. 2 is by taking single-piston rod-type double-action hydraulic column as an example.Wherein, emulsion power pack 9 provides pressure adjustable for hydraulic vertical prop
Emulsion.
The lift control system of the utility model includes hydraulic control one-way valve 4 and directional control valve 8, when column setting prop, liquid
3 feed liquor of column cavity of resorption is pressed, hydraulic vertical prop epicoele 2 returns liquid；When column drops in column, 4 control port K feed liquor of hydraulic control one-way valve, hydraulic control
4 reverse opening of check valve, hydraulic vertical prop cavity of resorption 3 return liquid, 2 feed liquor of hydraulic vertical prop epicoele.Directional control valve 8 is connected to hydraulic vertical prop
Between emulsion power pack 9, for controlling the working fluid direction of hydraulic vertical prop, hydraulic control one-way valve 4 is connected to the direction control
Between valve 8 and hydraulic vertical prop cavity of resorption 3 processed, for lockking the liquid of hydraulic vertical prop cavity of resorption 3, movable post 1 is made to be parked in the work of requirement
Highly.
In addition, directional control valve 8 is three-position four-way electromagnetic directional valve, there are three the spools of the three-position four-way electromagnetic directional valve
Operating position；The three-position four-way electromagnetic directional valve there are four valve port, respectively with emulsion power pack 9, fuel tank, hydraulic vertical prop epicoele
2 and hydraulic vertical prop cavity of resorption 3 connect.When the spool of three-position four-way electromagnetic directional valve is under emulsion power pack valve port and hydraulic vertical prop
When chamber valve port communicating position, high-pressure emulsion enters hydraulic vertical prop cavity of resorption 3 through hydraulic control one-way valve 4, pushes the work in hydraulic vertical prop
Column 1 moves up, while the liquid discharge in hydraulic vertical prop epicoele 2；When the spool of three-position four-way electromagnetic directional valve is in emulsification
When pump station valve port and hydraulic vertical prop epicoele valve port communicating position, high-pressure emulsion enters from hydraulic vertical prop epicoele 2, pushes hydraulic
Movable post 1 in column moves down, meanwhile, 4 reverse opening of hydraulic control one-way valve, the liquid in hydraulic vertical prop cavity of resorption 3 passes through hydraulic control
Check valve 4 is discharged.
The quick energy-absorbing component of the utility model includes check valve 5, accumulator 6 and safety valve 7, wherein accumulator 6 and peace
Full valve 7 is connected by check valve 5 with hydraulic vertical prop cavity of resorption 3, and the set pressure for changing safety valve 7 carrys out the work resistance of adjusting post
Power.Accumulator 6 fails the highly pressurised liquid being discharged in time for storing impact come safety valve 7 when pressing, and improves hydraulic vertical prop and is impacting
The instantaneous flow of hydraulic vertical prop cavity of resorption 3 is discharged when ground pressure is raw, improves the through-current capability of safety valve 7 indirectly.Check valve 5 is for protecting
The one-way flow of liquid is demonstrate,proved, the high-pressure emulsion in accumulator 6 does not flow back to hydraulic vertical prop cavity of resorption 3.Quick energy-absorbing component is used to
Storage and release impact improve the instantaneous stream of discharge hydraulic vertical prop cavity of resorption come the highly pressurised liquid of discharge hydraulic vertical prop cavity of resorption 3 when pressing
Amount prevents drain rate and impact to press rate to mismatch caused column failure, improves the shock resistance of hydraulic vertical prop.
The layout drawing of quick energy-absorbing component, as shown in Figure 1.
In the following, referring to Fig.1~Fig. 2 and combination above structure description, have the quick energy-absorbing of accumulator to the utility model
The course of work of the hydraulic vertical prop of resigning is described:
Emulsion power pack 9 provides power for hydraulic vertical prop, and regulating system pressure is the first bulging power of hydraulic vertical prop.Direction control
Valve 8 processed is used to control the flow direction of working fluid, connects in right position, that is, valve port P with B when directional control valve 8 works, T and A connect
When logical, 4 control port K feed liquor of hydraulic control one-way valve, 4 reverse opening of hydraulic control one-way valve, 2 feed liquor of hydraulic vertical prop epicoele, hydraulic vertical prop
Cavity of resorption 3 returns liquid, and column drops in column；It is connected in left position, that is, valve port P with A when directional control valve 8 works, when T is connected with B, hydraulic vertical prop
3 feed liquor of cavity of resorption, hydraulic vertical prop epicoele 2 return liquid, jack up movable post 1, and movable post 1 rises to cavity pressure P under assigned work height and column0
Just bulging power is risen to, setting prop is completed, and the work of directional control valve 8 is disconnected in middle position, valve port P and A, B after the completion of setting prop, fluid-control one-way
Valve 4 locks the liquid of hydraulic vertical prop cavity of resorption 3, and column is made to be locked in working depth.When setting prop, if energy storage pressure P1Less than being
System pressure, check valve 5 are opened, and high-pressure emulsion flows into accumulator 6 until energy storage pressure P1It is identical with system pressure.
When bump occurs, quick energy-absorbing component absorbs the discharge most high-pressure emulsion of hydraulic vertical prop cavity of resorption 3, changes
Become the set pressure P of safety valve 72Come the working resistance of adjusting post, the set pressure P of safety valve 72Higher than energy storage pressure P1
With cavity pressure P under column0.Shock loading load acts on hydraulic vertical prop, cavity pressure P under column0Rapidly rise, generates hydraulic
Impact: as cavity pressure P under column0Higher than energy storage pressure P1When, check valve 5 is opened, and column cavity of resorption emulsion is flowed through check valve 5
Enter accumulator 6, energy storage pressure P1It increases, accumulator 6 stores the highly pressurised liquid of discharge hydraulic vertical prop cavity of resorption 3, is stored with inflatable
For energy device, the kinetic energy of liquid is converted into the pressure energy of gas；As cavity pressure P under column0Lower than energy storage pressure P1When, unidirectionally
Valve 5 is closed, and highly pressurised liquid is locked in accumulator 6；As energy storage pressure P1More than the set pressure P of safety valve 72When, safety
Valve 7 opens release, energy storage pressure P1The final set pressure P stablized in safety valve 72Near.Wherein, check valve 5 is for guaranteeing
The one-way flow of liquid, the high-pressure emulsion in accumulator 6 do not flow back to hydraulic vertical prop cavity of resorption 3, guarantee hydraulic vertical prop cavity of resorption 3
The pressure moment is in safe range.
Impact is come when pressing, quick energy-absorbing component is divided into three working stages.First stage impacts to press moment, is impacting
Load acts on cavity pressure P under lower pillar stand0It quickly increases, check valve 5 is opened, and column cavity of resorption emulsion is all flowed into through check valve 5
In accumulator 6, the instantaneous flow q of discharge hydraulic vertical prop cavity of resorption is equal to the instantaneous flow q flowed into accumulator 61, this stage accumulation of energy
Device 6 undertakes whole energy-absorbings by bit function.Second stage, as energy storage pressure P1Rapidly it is increased to the set pressure P of safety valve 72
When, safety valve 7 starts drain release, at this point, the instantaneous flow q of discharge hydraulic vertical prop cavity of resorption is equal to the wink flowed into accumulator 6
Shi Liuliang q1With the instantaneous flow q being discharged by safety valve 72The sum of.When Strong Impact Loading is made, due to the draining flow of safety valve 7
It is much smaller than to press rate, the instantaneous flow q of safety valve 7 is discharged2Far below the instantaneous flow q flowed into accumulator 61, i.e. discharge liquor
The liquid of pressure column cavity of resorption is mainly stored in accumulator 6,7 shared energy-absorbing resigning function of this stage accumulator 6 and safety valve
Energy.Phase III, after impact energy weakens, cavity pressure P under column0Lower than energy storage pressure P1, the closing of check valve 5, there is no
Liquid flows into quick energy-absorbing component from hydraulic vertical prop cavity of resorption 3, and the high-pressure emulsion stored in accumulator 6 is continued by safety valve 7
Drain off-load is until energy storage pressure P1Lower than the set pressure P of safety valve 72, the closing of safety valve 7, column off-load, which allows, presses completion,
This phase security valve 7 undertakes whole energy-absorbings by bit function.Accumulator 6 fails to arrange in time for storing impact come safety valve 7 when pressing
Highly pressurised liquid out improves the instantaneous flow of discharge hydraulic vertical prop cavity of resorption 3, extends 7 drain time of safety valve, solves hydraulic vertical
Column Strong Impact Loading effect under due to safety valve flow restriction caused by hydraulic vertical prop fail, improve hydraulic vertical prop and impacting
Erosion control performance under load effect.
The hydraulic vertical prop combination accumulator energy-absorbing stepped down with the quick energy-absorbing of accumulator of the utility model stores high pressure liquid
The characteristics of body, introduces accumulator in hydraulic vertical prop and realizes that quick energy-absorbing allows pressure, and when bump occurs, accumulator storage is safe
Valve fails the highly pressurised liquid being discharged in time, improves the instantaneous flow of hydraulic vertical prop column cavity of resorption off-load when bump occurs,
The through-current capability for improving safety valve indirectly, prevent hydraulic vertical prop because safety valve off-load flow is small lead to column cavity of resorption hypertonia due to
Caused by supporting fail, improve the shock resistance of hydraulic vertical prop.
The above is preferred embodiments of the present invention, certainly cannot with this come limit the utility model it
Interest field, it is noted that for those skilled in the art, before not departing from the utility model principle
It puts, several improvement and variation can also be made, these, which improve and change, is also considered as the protection scope of the utility model.
Claims (5)
1. a kind of hydraulic vertical prop stepped down with the quick energy-absorbing of accumulator characterized by comprising
Hydraulic vertical prop, for adjusting the hydraulic support height where hydraulic vertical prop and bearing load；
Lift control system is connect with the hydraulic vertical prop, including directional control valve and hydraulic control one-way valve, for controlling hydraulic vertical
The working fluid direction of column and the liquid of hydraulic vertical prop cavity of resorption is lockked；
Quick energy-absorbing component, connect, including check valve, accumulator and safety valve, for storing and discharging with the hydraulic vertical prop
It impacts the highly pressurised liquid of hydraulic vertical prop cavity of resorption to be discharged when pressing, improves the instantaneous flow of discharge hydraulic vertical prop cavity of resorption.
2. the hydraulic vertical prop stepped down as described in claim 1 with the quick energy-absorbing of accumulator, which is characterized in that the accumulator
And safety valve is connected to by the check valve with hydraulic vertical prop cavity of resorption；
The safety valve connect by the check valve with hydraulic vertical prop cavity of resorption, is adjusted for changing set pressure for safety valve
The working resistance of column；
The accumulator is connected with the safety valve, fails the high pressure liquid being discharged in time for storing impact come safety valve when pressing
Body improves the instantaneous flow that hydraulic vertical prop cavity of resorption is discharged when bump occurs for column.
3. the hydraulic vertical prop stepped down as described in claim 1 with the quick energy-absorbing of accumulator, which is characterized in that the direction control
Valve processed is connected between hydraulic vertical prop and emulsion power pack, the flow direction of the working fluid for controlling hydraulic vertical prop；
The hydraulic control one-way valve is connected between the directional control valve and hydraulic vertical prop cavity of resorption, for controlling the one-way flow of liquid
It is dynamic, the liquid of hydraulic vertical prop cavity of resorption is lockked, column is made to be parked in the working depth of requirement.
4. the hydraulic vertical prop stepped down as claimed in claim 3 with the quick energy-absorbing of accumulator, which is characterized in that the direction control
Valve processed is three-position four-way electromagnetic directional valve, and there are three operating positions for the spool of the three-position four-way electromagnetic directional valve；
The three-position four-way electromagnetic directional valve there are four valve port, respectively with emulsion power pack, fuel tank, hydraulic vertical prop epicoele and hydraulic
The connection of column cavity of resorption.
5. the hydraulic vertical prop stepped down as claimed in claim 3 with the quick energy-absorbing of accumulator, which is characterized in that the hydraulic control list
Control port is had to valve, for controlling the reverse circulated of liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920030167.0U CN209430225U (en) | 2019-01-08 | 2019-01-08 | A kind of hydraulic vertical prop stepped down with the quick energy-absorbing of accumulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920030167.0U CN209430225U (en) | 2019-01-08 | 2019-01-08 | A kind of hydraulic vertical prop stepped down with the quick energy-absorbing of accumulator |
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| CN209430225U true CN209430225U (en) | 2019-09-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538259A (en) * | 2019-01-08 | 2019-03-29 | 辽宁工程技术大学 | A kind of hydraulic vertical prop stepped down with the quick energy-absorbing of accumulator |
| CN113339025A (en) * | 2021-06-04 | 2021-09-03 | 煤炭科学研究总院 | Hydraulic system and hydraulic support group |
-
2019
- 2019-01-08 CN CN201920030167.0U patent/CN209430225U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538259A (en) * | 2019-01-08 | 2019-03-29 | 辽宁工程技术大学 | A kind of hydraulic vertical prop stepped down with the quick energy-absorbing of accumulator |
| CN113339025A (en) * | 2021-06-04 | 2021-09-03 | 煤炭科学研究总院 | Hydraulic system and hydraulic support group |
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