CN204253690U - TBM cutterhead brake hydraulic control system - Google Patents
TBM cutterhead brake hydraulic control system Download PDFInfo
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- CN204253690U CN204253690U CN201420727028.0U CN201420727028U CN204253690U CN 204253690 U CN204253690 U CN 204253690U CN 201420727028 U CN201420727028 U CN 201420727028U CN 204253690 U CN204253690 U CN 204253690U
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Abstract
The utility model relates to a kind of tunneling machine hydraulic system, and spy does not mention a kind of TBM cutterhead brake hydraulic control system, comprises oil hydraulic pump, fuel tank, two-position four-way solenoid directional control valve, Pilot operated check valve, one-way throttle valve I, reduction valve, accumulator and braking device.TBM cutterhead brake hydraulic control system of the present utility model; for passive skidding mode; can effectively prevent from fortuitous event from braking initiatively to brake; avoid causing brake system to damage; and skidding has the feature of delays time to control; ensure cutterhead stop after skidding again, thus protect the safe operation of TBM brake system better.
Description
Technical field
The utility model relates to a kind of tunneling machine hydraulic system, and spy does not mention a kind of TBM cutterhead brake hydraulic control system.
Background technique
TBM i.e. complete-section tunnel boring machine, driving, supporting, the working procedure such as to slag tap is parallel works continuously, it is machine, electricity, liquid, light, the batch production production line tunnel construction equipment of the system intergrations such as gas, there is driving speed fast, be beneficial to environmental protection, comprehensive benefit advantages of higher, the construction that traditional drilling and blasting method is difficult to the complicated geographical relief deep and long tunnels realized can be realized, at present, the braking control system of TBM cutterhead, adopt initiatively mode of braking, when there is the emergency situations such as unexpected power-off or oil supply system failure, cutterhead braking system can unexpected Braking mode, and now cutterhead also in lasting rotation, so just there is the risk that braking system is damaged, make troubles to TBM construction.
Model utility content
When goal of the invention of the present utility model is that overcoming current TBM occurs the emergency situations such as unexpected power-off or oil supply system failure, cutterhead braking system can the defect of unexpected Braking mode, thus realizes a kind of TBM cutterhead brake hydraulic control system that can prevent the unexpected Braking mode of cutterhead braking system.
For achieving the above object, the technical solution of the utility model is: a kind of TBM cutterhead brake hydraulic control system, comprise oil hydraulic pump, fuel tank, two-position four-way solenoid directional control valve, Pilot operated check valve, one-way throttle valve I, reduction valve, accumulator and braking device, described accumulator filler opening, the filler opening of braking device is connected with one-way throttle valve I, one-way throttle valve I is connected with the oil outlet of Pilot operated check valve, the filler opening of Pilot operated check valve is connected with the B hydraulic fluid port of two-position four-way solenoid directional control valve, the T hydraulic fluid port of two-position four-way solenoid directional control valve is connected with fuel tank, the A hydraulic fluid port of two-position four-way solenoid directional control valve is connected with Pilot operated check valve control port, the P hydraulic fluid port of two-position four-way solenoid directional control valve is connected with reduction valve oil outlet, reduction valve unloading port is connected with fuel tank, reduction valve filler opening is connected with oil hydraulic pump.
Described two-position four-way solenoid directional control valve is special type selecting, and can avoid the brake locking that the unexpected dead electricity of two-position four-way solenoid directional control valve causes, even if two-position four-way solenoid directional control valve accident power-off, the working position of solenoid valve remains unchanged, and avoids unexpected locking of braking.
Described braking device belongs to spring braking, and in normal conditions, braking device is in braking state, only under pressure oil drives, is compressed by brake spring, and braking video disc is separated, and braking device just can discharge.
The A hydraulic fluid port of described two-position four-way solenoid directional control valve is also connected with an one-way throttle valve II, and described one-way throttle valve II rear portion arranges pressure-measuring point MA, and described MA place is connected with pressure-measuring meter; Arrange pressure-measuring point MB between described accumulator and one-way throttle valve I, described MB place connects pressure-measuring meter and pressure transducer.
Be arranged in series ball valve between described reduction valve and oil hydraulic pump, between the T hydraulic fluid port of two-position four-way solenoid directional control valve and fuel tank, be arranged in series one-way valve.
The working principle of TBM cutterhead brake hydraulic control system of the present utility model:
Before TBM cutterhead starts rotation, the right position work of two-position four-way solenoid directional control valve, pressure oil is through reduction valve, two-position four-way solenoid directional control valve, Pilot operated check valve, individual event throttle valve I, to braking device fuel feeding, braking device discharges, and allows cutterhead to rotate, in cutterhead rotary course, the right position of two-position four-way solenoid directional control valve obtains electric, and braking device is in and continues, for oil condition, to ensure the reliable release of braking device, when hydraulic system catastrophic failure, when causing pressure oil to disappear, due to the effect of Pilot operated check valve and accumulator, braking device is made to be in packing state, thus ensure that braking device still keeps releasing state, avoid braking device unexpecred braking, cause system failure, after detecting that TBM cutterhead stops, the left position work of two-position four-way solenoid directional control valve, Pilot operated check valve is opened by pressure oil, the pressure oil of braking device slowly flows back to fuel tank through individual event throttle valve I, retardation pressure slowly declines, braking device slowly recovers braking state, thus avoid impact to cause braking device to damage, and this hydraulic system is provided with pressure transducer and pressure-measuring meter, the oil pressure of Real-Time Monitoring braking device, rotate with cutterhead and form chain control, ensure the safe operation of this brake control system.
The beneficial effect of TBM cutterhead brake hydraulic control system of the present utility model:
1. TBM cutterhead brake hydraulic control system of the present utility model, for passive skidding mode, when hydraulic system catastrophic failure, when causing pressure oil to disappear, due to the effect of Pilot operated check valve and accumulator, braking device is made to be in packing state, thus ensure that braking device still keeps releasing state, avoid braking device unexpecred braking, effectively can prevent fortuitous event from braking and initiatively brake, avoid causing brake system to damage.
2. TBM cutterhead brake hydraulic control system of the present utility model; after TBM cutterhead stops; the left position work of two-position four-way solenoid directional control valve; Pilot operated check valve is opened by pressure oil; the pressure oil of braking device slowly flows back to fuel tank through individual event throttle valve I; retardation pressure slowly declines; braking device slowly recovers braking state; cutterhead is checked; skidding has the feature of delays time to control; ensure cutterhead stop after skidding again, thus protect the safe operation of TBM brake system better.
Accompanying drawing explanation
Fig. 1 is the hydraulic principle structural representation of TBM cutterhead brake hydraulic control system.
Embodiment
Also by specific embodiment more detailed description is done to TBM cutterhead brake hydraulic control system of the present utility model below in conjunction with accompanying drawing.
Embodiment:
See Fig. 1: 1-oil hydraulic pump, 2-fuel tank, 3-two-position four-way solenoid directional control valve, 4-Pilot operated check valve, 5-one-way throttle valve I, 6-reduction valve, 7-accumulator, 8-braking device, 9-one-way throttle valve II, 10-pressure-measuring meter, 11-pressure transducer, 12-ball valve, 13-one-way valve, 14-cutterhead.
TBM cutterhead brake hydraulic control system of the present utility model, comprise oil hydraulic pump 1, fuel tank 2, two-position four-way solenoid directional control valve 3, Pilot operated check valve 4, one-way throttle valve I5, reduction valve 6, accumulator 7 and braking device 8, described accumulator 7 filler opening, the filler opening of braking device 8 is connected with one-way throttle valve I5, one-way throttle valve I5 is connected with the oil outlet of Pilot operated check valve 4, the filler opening of Pilot operated check valve 4 is connected with the B hydraulic fluid port of two-position four-way solenoid directional control valve 3, the T hydraulic fluid port of two-position four-way solenoid directional control valve 3 is connected with fuel tank 2, the A hydraulic fluid port of two-position four-way solenoid directional control valve 3 is connected with Pilot operated check valve 4 control port, the P hydraulic fluid port of two-position four-way solenoid directional control valve 3 is connected with reduction valve 6 oil outlet, reduction valve 6 unloading port is connected with fuel tank 2, reduction valve 6 filler opening is connected with oil hydraulic pump 1, described braking device 8 coordinates with TBM cutterhead 14 to be installed, described two-position four-way solenoid directional control valve 3 is power-off valve block not return type solenoid valve.
The A hydraulic fluid port of described two-position four-way solenoid directional control valve 3 is also connected with an one-way throttle valve II9, and described one-way throttle valve II9 rear portion arranges pressure-measuring point MA, and described MA place is connected with pressure-measuring meter 10; Arrange pressure-measuring point MB between described accumulator 7 and one-way throttle valve I5, described MB place connects pressure-measuring meter 10 and pressure transducer 11.
Be arranged in series ball valve 12 between described reduction valve 6 and oil hydraulic pump 1, between the T hydraulic fluid port of two-position four-way solenoid directional control valve 3 and fuel tank 2, be arranged in series one-way valve 13.
The foregoing is only the schematic embodiment of the utility model; and be not used to limit scope of the present utility model; the equivalent variations that any those skilled in the art makes under the prerequisite not departing from the utility model design and principle and amendment, all should belong to the scope of the utility model protection.
Claims (6)
1. a TBM cutterhead brake hydraulic control system, comprise oil hydraulic pump, fuel tank, two-position four-way solenoid directional control valve, Pilot operated check valve, one-way throttle valve I, reduction valve, accumulator and braking device, it is characterized in that: described accumulator filler opening, the filler opening of braking device is connected with one-way throttle valve I, one-way throttle valve I is connected with the oil outlet of Pilot operated check valve, the filler opening of Pilot operated check valve is connected with the B hydraulic fluid port of two-position four-way solenoid directional control valve, the T hydraulic fluid port of two-position four-way solenoid directional control valve is connected with fuel tank, the A hydraulic fluid port of two-position four-way solenoid directional control valve is connected with Pilot operated check valve control port, the P hydraulic fluid port of two-position four-way solenoid directional control valve is connected with reduction valve oil outlet, reduction valve unloading port is connected with fuel tank, reduction valve filler opening is connected with oil hydraulic pump.
2. TBM cutterhead brake hydraulic control system according to claim 1, it is characterized in that: the A hydraulic fluid port of described two-position four-way solenoid directional control valve is also connected with an one-way throttle valve II, described one-way throttle valve II rear portion arranges pressure-measuring point MA, and described MA place is connected with pressure-measuring meter.
3. TBM cutterhead brake hydraulic control system according to claim 1, it is characterized in that: arrange pressure-measuring point MB between described accumulator and one-way throttle valve I, described MB place connects pressure-measuring meter and pressure transducer.
4. TBM cutterhead brake hydraulic control system according to claim 1, is characterized in that: be arranged in series ball valve between described reduction valve and oil hydraulic pump.
5. TBM cutterhead brake hydraulic control system according to claim 1, is characterized in that: be arranged in series one-way valve between the T hydraulic fluid port of described two-position four-way solenoid directional control valve and fuel tank.
6. TBM cutterhead brake hydraulic control system according to claim 1, is characterized in that: described two-position four-way solenoid directional control valve is power-off valve block not return type solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420727028.0U CN204253690U (en) | 2014-11-28 | 2014-11-28 | TBM cutterhead brake hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420727028.0U CN204253690U (en) | 2014-11-28 | 2014-11-28 | TBM cutterhead brake hydraulic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204253690U true CN204253690U (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420727028.0U Active CN204253690U (en) | 2014-11-28 | 2014-11-28 | TBM cutterhead brake hydraulic control system |
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| Country | Link |
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| CN (1) | CN204253690U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506252A (en) * | 2018-05-30 | 2018-09-07 | 雷沃重工股份有限公司 | Hydraulic control system and tractor |
| CN111425212A (en) * | 2020-04-16 | 2020-07-17 | 张振增 | Hob group control hydraulic monitoring system |
-
2014
- 2014-11-28 CN CN201420727028.0U patent/CN204253690U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506252A (en) * | 2018-05-30 | 2018-09-07 | 雷沃重工股份有限公司 | Hydraulic control system and tractor |
| CN111425212A (en) * | 2020-04-16 | 2020-07-17 | 张振增 | Hob group control hydraulic monitoring system |
| CN111425212B (en) * | 2020-04-16 | 2022-08-16 | 张振增 | Hob group control hydraulic monitoring system |
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