CN209671296U - A kind of tunnel duct piece supporting proportional and synchronous hydraulic control system - Google Patents
A kind of tunnel duct piece supporting proportional and synchronous hydraulic control system Download PDFInfo
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- CN209671296U CN209671296U CN201920420439.8U CN201920420439U CN209671296U CN 209671296 U CN209671296 U CN 209671296U CN 201920420439 U CN201920420439 U CN 201920420439U CN 209671296 U CN209671296 U CN 209671296U
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Abstract
The utility model discloses a kind of tunnel duct piece supporting proportional and synchronous hydraulic control systems, including hydraulic pump, the input terminal of hydraulic pump is connected with fuel tank, output end is connected with hydraulic control valve group and supporting hydraulic cylinder in turn, the output end of hydraulic pump is parallel at least two groups supporting unit, every group of supporting unit includes at least one supporting hydraulic cylinder, hydraulic control valve group includes connected solenoid directional control valve, Solenoid ball valve, solenoid directional control valve, Solenoid ball valve is connected with control unit, Solenoid ball valve is connected with the rodless cavity of supporting hydraulic cylinder, solenoid directional control valve is connected with the rod chamber of supporting hydraulic cylinder, flow valve is provided between rod chamber and solenoid directional control valve, the oil revolving end of solenoid directional control valve is connected with oil return line, the reflux branch pipe being connected with oil return line is connected between supporting hydraulic cylinder and Solenoid ball valve, safety valve is provided on reflux branch pipe.The utility model has single control mode and linkage pattern, can adapt to different tunnel duct piece supporting demands.
Description
Technical field
The utility model relates to tunnel duct piece supporting technical field of hydraulic, particularly relates to a kind of tunnel duct piece supporting ratio
Synchronous hydraulic control system.
Background technique
Underground space development gradually develops as spatialization, networking at present.To realize underground space network interworking and existing
Linking between space, subway, vcehicular tunnel service channel, pipe gallery outlet well, deep tunnel drainage channel etc. are all kinds of
The demand in network channel is constantly promoted.The country is when mechanization service channel engineering method is constructed, when equipment originates and equipment is appeared
It needs to carry out reliable supporting to original main tunnel, but the hydraulic system that existing suspension device matches not only is easy to happen partially
It carries, and the operating condition in tunnel is complicated and changeable, existing suspension device control is complicated, stability is poor, cannot quickly cope with different
Supporting operating condition, can not reliable and stable supporting.
Utility model content
For the deficiency in above-mentioned background technique, the utility model proposes a kind of tunnel duct piece supporting ratio synchronous hydraulic controls
System and its control method processed, solve that the control of existing tunnel hydraulic prop system is complicated, stability is poor, can not fast implement steady
The technical issues of fixed reliable supporting.
The technical solution of the utility model is achieved in that a kind of tunnel duct piece supporting ratio synchronous hydraulic control system
System, including motor-driven hydraulic pump, the input terminal of hydraulic pump is connected with fuel tank, output end is connected in turn by fluid pressure line
Hydraulic control valve group and supporting hydraulic cylinder, hydraulic control valve group control the expanding-contracting action of supporting hydraulic cylinder.The hydraulic pump it is defeated
Outlet is parallel at least two groups supporting unit, and every group of supporting unit includes at least one supporting hydraulic cylinder, supporting hydraulic cylinder and liquid
Hydraulic control valve group, each each supporting hydraulic cylinder extension of hydraulic control valve group independent control are provided between press pump.It is hydraulic
Control valve group includes solenoid directional control valve, and the first output end of solenoid directional control valve is connected with Solenoid ball valve, solenoid directional control valve, electromagnetic ball
Valve is connected with control unit, and the output end of Solenoid ball valve is connected with the rodless cavity of supporting hydraulic cylinder, and control unit controls electromagnetism
Reversal valve and Solenoid ball valve movement, and then control the flexible of supporting hydraulic cylinder.The second output terminal and supporting liquid of solenoid directional control valve
The rod chamber of cylinder pressure is connected, and flow valve is provided between rod chamber and solenoid directional control valve, flow valve can guarantee each supporting liquid
The oil return rate of cylinder pressure is identical, guarantees the synchronism of each supporting hydraulic cylinder movement.The oil revolving end of solenoid directional control valve is connected with back
Oil pipe line is connected with the reflux branch pipe being connected with oil return line between supporting hydraulic cylinder and Solenoid ball valve, be arranged on the branch pipe that flows back
There is safety valve.Safety valve is opening and closing element, is not in normally off under by external force, is surpassed when the hydraulic fluid pressure in oil pipe increases
When crossing specified value, by outside system relief liquor pressure oil come to prevent pressure in pipeline be more than specified value.
Further, supporting hydraulic cylinder is provided with pressure sensor and displacement sensor, pressure sensor and displacement sensing
Device is connected with described control unit.Pressure sensor can real-time monitoring support fastening pressure size, and pressure size is passed
Control unit is transported to, control unit can adjust in real time the movement of solenoid directional control valve and Solenoid ball valve according to the size of pressure value, make
The pressure of support fastening is in dbjective state.Displacement sensor can real-time monitoring supporting hydraulic cylinder collapsing length, control unit
The data of combination pressure sensor and the data of displacement sensor can adjust the flexible dynamic of supporting cylinder more accurately
Make.
Further, explosion-proof valve is provided between the rodless cavity and Solenoid ball valve, explosion-proof valve is connected to rodless cavity rear
And whole valve block is formed with flow valve, the pressure off-load of supporting hydraulic cylinder after oil circuit explosion is prevented, prevents supporting hydraulic cylinder from supporting
Supporting element fall.
Further, the first check valve for preventing hydraulic oil from flowing back is provided between the oil revolving end and oil return line, the
One check valve can prevent the hydraulic oil in oil return line from flowing back, and avoid the pressure oscillation for causing rodless cavity.
Further, threeway proportional pressure-reducing valve, the decompression of threeway ratio are provided between the hydraulic pump and solenoid directional control valve
Valve is connected with oil return line, and threeway proportional pressure-reducing valve has the function of that throttling energy consumption reaches decompression, and control unit passes through control three
The setting pressure of logical proportional pressure-reducing valve, is adjustable the pressure of the high pressure liquid pressure oil in pressure piping, keeps high-pressure system pressure uniform
It reduces, prevents abrupt pressure reduction from generating disturbance to stratum.Safe valve group is provided between threeway proportional pressure-reducing valve and hydraulic pump, safety
Safety valve collective effect in valve group and reflux branch pipe, further ensures the stability of action process.
Further, the second one-way valve of anti-backflow is provided between the threeway proportional pressure-reducing valve and hydraulic pump, the
Two check valves and the first check valve collective effect, further reduced the pressure oscillation in fluid pressure line.
Further, it is provided with oil suction filter core between the fuel tank and hydraulic pump, is set between hydraulic pump and second one-way valve
It is equipped with filter.Filter and oil suction filter core play the role of hydraulic oil filtering jointly, and double-filtration has fully ensured that hydraulic oil
Cleannes.
The utility model not only controls simple, stable and reliable operation, but also has single control mode and linkage pattern, Neng Goushi
Answer different tunnel duct piece supporting demands, while having the function of real-time monitoring, overload protection, pressure step-less adjustment etc., both avoided
Pressure oscillation, and can adjust the support pressure value of supporting cylinder in real time.
Detailed description of the invention
It, below will be to attached drawing needed in embodiment description in order to illustrate more clearly of the utility model embodiment
It is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the hydraulic principle figure of the utility model；
Fig. 2 is the utility model use state diagram.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are under that premise of not paying creative labor
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1, a kind of tunnel duct piece supporting proportional and synchronous hydraulic control system, as depicted in figs. 1 and 2, including motor 1
The hydraulic pump 5 of drive, the input terminal of hydraulic pump 5 are connected with fuel tank 2, output end and are connected with hydraulic control in turn by fluid pressure line
Valve group and supporting hydraulic cylinder 19, hydraulic control valve group control the expanding-contracting action of supporting hydraulic cylinder 19, and supporting hydraulic cylinder 19 can drive
It supports boots 20 and supporting is carried out to the section of jurisdiction 21 in tunnel.The output end of the hydraulic pump 5 is parallel with four groups of supporting units, every group of supporting
Unit includes a supporting hydraulic cylinder 19, and hydraulic control valve group, each liquid are provided between supporting hydraulic cylinder 19 and hydraulic pump 5
The each supporting hydraulic cylinder 19 of pressure control valve group independent control is flexible.
The hydraulic control valve group includes solenoid directional control valve 13, and the first output end of solenoid directional control valve 13 is connected with electromagnetic ball
Valve 14, solenoid directional control valve 13, Solenoid ball valve 14 are connected with control unit.The output end and supporting hydraulic cylinder 19 of Solenoid ball valve 14
Rodless cavity be connected, control unit controls solenoid directional control valve 13, Solenoid ball valve 14 acts, and then controls supporting hydraulic cylinder 19 and stretch
Contracting.The second output terminal of solenoid directional control valve 13 is connected with the rod chamber of supporting hydraulic cylinder 19, rod chamber and solenoid directional control valve 13 it
Between be provided with flow valve 17, flow valve 17 can guarantee that the oil return rate of each supporting hydraulic cylinder is identical, so guarantee each
Protect the synchronism that hydraulic cylinder 19 acts.
The oil revolving end of solenoid directional control valve 13 is connected with oil return line 22, connects between supporting hydraulic cylinder 19 and Solenoid ball valve 14
There is the reflux branch pipe 23 being connected with oil return line 22, is provided with safety valve 15 on the branch pipe 23 that flows back.Safety valve 15 is opening and closing element, not
Normally off is under by external force, when the hydraulic fluid pressure in oil pipe, which increases, is more than specified value, by system outlet
Tapping pressure oil is come to prevent pressure in pipeline be more than specified value.
Further, supporting hydraulic cylinder 19 is provided with pressure sensor 18 and displacement sensor, pressure sensor 18 and position
Displacement sensor is connected with described control unit.Pressure sensor 18 can real-time monitoring support fastening pressure size, and will pressure
Power size is transmitted to control unit, and control unit can adjust in real time the ratio of threeway proportional pressure-reducing valve 11 according to the size of pressure value
The movement for controlling signal, solenoid directional control valve 13 and Solenoid ball valve 14, the pressure for fastening support are in dbjective state.Displacement sensing
Device can real-time monitoring supporting hydraulic cylinder 19 collapsing length, the data and displacement sensor of control unit combination pressure sensor 18
Data, the expanding-contracting action of supporting cylinder can be adjusted more accurately.
Embodiment 2, a kind of tunnel duct piece supporting proportional and synchronous hydraulic control system, the rodless cavity and Solenoid ball valve 14 it
Between be provided with explosion-proof valve 16, explosion-proof valve 16 is connected to rodless cavity rear and forms whole valve block 24 with flow valve 17.Explosion-proof valve 16
The pressure off-load for preventing supporting hydraulic cylinder 19 after oil circuit explosion, the supporting element for preventing supporting hydraulic cylinder 19 from supporting fall.
The other structures of the present embodiment are same as Example 1.
Embodiment 3, a kind of tunnel duct piece supporting proportional and synchronous hydraulic control system, the oil revolving end and oil return line 22 it
Between be provided with prevent hydraulic oil flow back the first check valve 12, the first check valve 12 can prevent the hydraulic oil in oil return line return
Stream, avoids the pressure oscillation for causing rodless cavity.
The other structures of the present embodiment are identical as embodiment 1 or 2.
Embodiment 4, a kind of tunnel duct piece supporting proportional and synchronous hydraulic control system, the hydraulic pump 5 and solenoid directional control valve
Threeway proportional pressure-reducing valve 11 is provided between 13, threeway proportional pressure-reducing valve 11 is also connected with oil return line 22, the decompression of threeway ratio
Valve 11 has the function of saving energy consumption stepless voltage regulation, setting pressure of the control unit by control threeway proportional pressure-reducing valve 11, energy
The pressure for adjusting the high pressure liquid pressure oil in pressure piping, goes up and down high-pressure system pressure uniformly, prevents abrupt pressure reduction from producing to stratum
Raw disturbance.It is provided with safe valve group 6 between threeway proportional pressure-reducing valve 11 and hydraulic pump 5, pacifies on safe valve group 6 and return line 22
15 collective effect of full valve, further ensures the stability of action process.
The other structures of the present embodiment are identical as embodiment 1 or 2 or 3.
Embodiment 5, a kind of tunnel duct piece supporting proportional and synchronous hydraulic control system, the threeway proportional pressure-reducing valve 11 and liquid
The second one-way valve 10 of anti-backflow, 12 collective effect of second one-way valve 10 and the first check valve, into one are provided between press pump 5
Step reduces the pressure oscillation in fluid pressure line.
The other structures of the present embodiment are same as Example 4.
Embodiment 6, a kind of tunnel duct piece supporting proportional and synchronous hydraulic control system are set between the fuel tank 2 and hydraulic pump 5
It is equipped with oil suction filter core 3 and butterfly valve 4, filter 9, filter 9 and safe valve group are provided between hydraulic pump 5 and second one-way valve 10
Ball valve 8 is provided between 6.Filter 9 and oil suction filter core 3 play the role of hydraulic oil filtering jointly, and double-filtration fully ensures that
The cleannes of hydraulic oil.
The other structures of the present embodiment are same as Example 5.
The control method of the utility model includes unloaded stretching process, stretching pressure regulation process, pressure leak process, removal process,
The stretching debugging process is closed-loop control, and control unit presets the control pressure of threeway proportional pressure-reducing valve 11, control unit control
Supporting hydraulic cylinder 19 processed gradually stretches out, while pressure sensor 18 controls the pressure real-time Transmission of rodless cavity to control unit
Unit adjusts the support of supporting hydraulic cylinder 19 by control solenoid directional control valve 13, Solenoid ball valve 14 and threeway proportional pressure-reducing valve 11 in real time
Compaction forces, when the pressure that pressure sensor 18 monitors reaches setting value, control unit control Solenoid ball valve power-off is protected
Pressure.
The zero load stretching process is opened loop control, and control unit controls the threeway ratio being connected with each supporting hydraulic cylinder 19
Example pressure reducing valve 11 set it is unloaded stretch out pressure, control solenoid directional control valve 13 turns to right position, control Solenoid ball valve 14 it is electric, then it is hydraulic
Oil passes sequentially through hydraulic pump 5, threeway proportional pressure-reducing valve 11, solenoid directional control valve 13 and Solenoid ball valve 14 into rodless cavity, Ge Gezhi
It protects hydraulic cylinder 19 to stretch out, the hydraulic oil of rod chamber passes sequentially through flow valve 17, solenoid directional control valve 13 and the first check valve 12 and flows into
Oil return line.Flow valve 17 guarantees that each supporting hydraulic cylinder 19 stretches out at the same speed, prevents in four oil cylinders speed in the process of running
Inconsistent generation hair fastener phenomenon.
The pressure leak process is the setup pressure value that control unit is gradually reduced threeway proportional pressure-reducing valve 11, the liquid of rodless cavity
Pressure oil passes sequentially through explosion-proof valve 16, Solenoid ball valve 14, solenoid directional control valve 13, threeway proportional pressure-reducing valve 11 and flows into oil return line 22.
The removal process is that control solenoid directional control valve 13 turns to left position, and Solenoid ball valve 14 must be electric, then hydraulic oil passes sequentially through hydraulic pump
5, threeway proportional pressure-reducing valve 11, solenoid directional control valve 13, flow valve 17 enter rod chamber, and the hydraulic oil of rodless cavity passes through explosion-proof valve
16, solenoid directional control valve 13, check valve 12 flow into oil return line 22.
The zero load stretching process, stretching pressure regulation process, pressure leak process, removal process include single control mode and linkage mould
Formula, when single control mode, control unit individually controls the hydraulic control valve group movement being connected with a supporting hydraulic cylinder 19, makes single
The independent telescopic adjustment of supporting hydraulic cylinder 19；When linkage pattern, control unit control is connected hydraulic with each supporting hydraulic cylinder 19
Control valve group movement, adjusts each 19 synchronization telescope of supporting hydraulic cylinder.
The not detailed place of the utility model is conventional technical means known in those skilled in the art.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (7)
1. a kind of tunnel duct piece supporting proportional and synchronous hydraulic control system, including the hydraulic pump (5) that motor (1) drives, hydraulic pump
(5) input terminal is connected with fuel tank (2), output end and is connected with hydraulic control valve group and supporting hydraulic cylinder in turn by fluid pressure line
(19), it is characterised in that: the output end of the hydraulic pump (5) is parallel at least two groups supporting unit, and every group of supporting unit includes
At least one supporting hydraulic cylinder (19) is provided with hydraulic control valve group between supporting hydraulic cylinder (19) and hydraulic pump (5), hydraulic
Control valve group includes solenoid directional control valve (13), and the first output end of solenoid directional control valve (13) is connected with Solenoid ball valve (14), electromagnetism
Reversal valve (13), Solenoid ball valve (14) are connected with control unit, the output end of Solenoid ball valve (14) and supporting hydraulic cylinder (19)
Rodless cavity be connected, the second output terminal of solenoid directional control valve (13) is connected with the rod chamber of supporting hydraulic cylinder (19), rod chamber and
It being provided between solenoid directional control valve (13) flow valve (17), the oil revolving end of solenoid directional control valve (13) is connected with oil return line (22),
The reflux branch pipe (23) being connected with oil return line (22), reflux branch are connected between supporting hydraulic cylinder (19) and Solenoid ball valve (14)
Safety valve (15) are provided on pipe (23).
2. tunnel duct piece supporting proportional and synchronous hydraulic control system according to claim 1, it is characterised in that: supporting is hydraulic
Cylinder (19) is provided with pressure sensor (18) and displacement sensor, pressure sensor (18) and displacement sensor with the control
Unit is connected.
3. tunnel duct piece supporting proportional and synchronous hydraulic control system according to claim 2, it is characterised in that: the no bar
It is provided between chamber and Solenoid ball valve (14) explosion-proof valve (16), explosion-proof valve (16) is connected to the rear of rodless cavity and and flow valve
(17) whole valve block (24) is formed.
4. tunnel duct piece supporting proportional and synchronous hydraulic control system according to claim 1-3, it is characterised in that:
The first check valve (12) for preventing hydraulic oil from flowing back is provided between the oil revolving end and oil return line (22).
5. tunnel duct piece supporting proportional and synchronous hydraulic control system according to claim 4, it is characterised in that: described hydraulic
It is provided with threeway proportional pressure-reducing valve (11) between pump (5) and solenoid directional control valve (13), threeway proportional pressure-reducing valve (11) and oil return pipe
Road (22) is connected, and safe valve group (6) are provided between threeway proportional pressure-reducing valve (11) and hydraulic pump (5).
6. tunnel duct piece supporting proportional and synchronous hydraulic control system according to claim 5, it is characterised in that: the threeway
The second one-way valve (10) of anti-backflow is provided between proportional pressure-reducing valve (11) and hydraulic pump (5).
7. tunnel duct piece supporting proportional and synchronous hydraulic control system according to claim 6, it is characterised in that: the fuel tank
(2) it is provided between hydraulic pump (5) oil suction filter core (3), is provided with filter between hydraulic pump (5) and second one-way valve (10)
(9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920420439.8U CN209671296U (en) | 2019-03-29 | 2019-03-29 | A kind of tunnel duct piece supporting proportional and synchronous hydraulic control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920420439.8U CN209671296U (en) | 2019-03-29 | 2019-03-29 | A kind of tunnel duct piece supporting proportional and synchronous hydraulic control system |
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| CN209671296U true CN209671296U (en) | 2019-11-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882465A (en) * | 2019-03-29 | 2019-06-14 | 中铁工程装备集团有限公司 | A kind of tunnel duct piece supporting proportional and synchronous hydraulic control system and its control method |
| CN115681226A (en) * | 2022-11-03 | 2023-02-03 | 北京科技大学 | Shaft heading machine supports experimental hydraulic system |
-
2019
- 2019-03-29 CN CN201920420439.8U patent/CN209671296U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882465A (en) * | 2019-03-29 | 2019-06-14 | 中铁工程装备集团有限公司 | A kind of tunnel duct piece supporting proportional and synchronous hydraulic control system and its control method |
| CN115681226A (en) * | 2022-11-03 | 2023-02-03 | 北京科技大学 | Shaft heading machine supports experimental hydraulic system |
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