CN204140723U - A kind of electrohydraulic control system of hydraulic disc brake - Google Patents
A kind of electrohydraulic control system of hydraulic disc brake Download PDFInfo
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- CN204140723U CN204140723U CN201420614764.5U CN201420614764U CN204140723U CN 204140723 U CN204140723 U CN 204140723U CN 201420614764 U CN201420614764 U CN 201420614764U CN 204140723 U CN204140723 U CN 204140723U
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Abstract
The utility model discloses a kind of electrohydraulic control system of hydraulic disc brake of rig, belong to oil-well drilling equipment technical field.Hydraulic disc brake electrohydraulic control system of the present utility model, comprise left working clamp control system, right wing working clamp control system and catch block control system, the oil return oil circuit control of catch block control system comprises oil circuit control one and oil circuit control two, and oil circuit control one and oil circuit control two are communicated with catch block and system oil return fuel tank respectively.Hydraulic disc brake electrohydraulic control system of the present utility model, the oil return oil circuit control arranging catch block control system is two relatively independent oil circuit controls one and oil circuit control two, article two, any normal work of oil circuit control can realize the emergency braking function coiling the system of stopping, the reliability of emergency braking is high, and drilling safety is good.
Description
Technical field
The utility model relates to a kind of control system, particularly a kind of electrohydraulic control system of hydraulic disc brake of rig, belongs to oil-well drilling equipment technical field.
Background technique
The electrohydraulic control system of current conventional oil rig hydraulic disc brake, there is following defect: 1. because the pilot proportional reduction valve for service braking is when it is in off working state (namely without electrical signal input), a certain amount of leakage rate can be there is all the time in guide's hydraulic fluid port of its inside, therefore after the unexpected power-off of system is shut down, the pressure oil-source that in system, accumulator stores will leak back to fuel tank by this valve, long-time pressurize after system power failure cannot be made to shut down, also rig cannot just be met after system power failure, the dish system of the stopping oil sources that need accumulator be relied within the regular hour to store still can untie the functional requirement of catch block 3 ~ 4 times.2. in the electrohydraulic control system of current conventional oil rig hydraulic disc brake, its emergency braking function realizes by means of only this oil circuit control of emergency stop cock, once the valve member on this oil circuit control breaks down, emergency braking function can be caused to realize, and supervision rationally and effectively and self-inspection judgement are lacked to the major control valve member for braking function, the reliability of therefore its emergency braking is not very high.
Model utility content
Goal of the invention of the present utility model is: for prior art above shortcomings, provides the hydraulic disc brake electrohydraulic control system that a kind of emergency braking reliability is high.
Further goal of the invention of the present utility model is, can be used for detecting the linkage structure of main braking valve member fault in catch block braking system.
Further goal of the invention of the present utility model is also, can the hydraulic disc brake electrohydraulic control system of pressurize for a long time after providing a kind of hydraulic system power down to shut down.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of hydraulic disc brake electrohydraulic control system, comprise left working clamp control system, right wing working clamp control system and catch block control system, the oil return oil circuit control of described catch block control system comprises oil circuit control one and oil circuit control two, and described oil circuit control one is communicated with catch block and system oil return fuel tank respectively with described oil circuit control two.The hydraulic disc brake electrohydraulic control system of said structure, the oil return oil circuit control arranging catch block control system is two relatively independent oil circuit controls one and oil circuit control two, article two, any normal work of oil circuit control can realize the emergency braking function coiling the system of stopping, the reliability of emergency braking is high, and drilling safety is good.
As preferred version of the present utility model, described oil circuit control one comprises oil circuit L1, oil circuit L4 and the second solenoid valve, described oil circuit L1 is for being communicated with outlet and the catch block of the second solenoid valve, and described oil circuit L4 is for being communicated with return opening and the system oil return fuel tank of the second solenoid valve.The oil circuit control one of said structure, structure is simply easy for installation, Braking system failure rate is low.
As preferred version of the present utility model, described oil circuit control two comprises oil circuit L1, oil circuit L3, oil circuit L6, the second solenoid valve and Pneumatic reversal valve; Described oil circuit L1 is for being communicated with outlet and the catch block of the second solenoid valve; Described oil circuit L3 is for the outlet of the import and described Pneumatic reversal valve that are communicated with described second solenoid valve, and the return opening of described Pneumatic reversal valve is communicated with system oil return fuel tank by oil circuit L6, and the import of described Pneumatic reversal valve is communicated with catch block oil sources.Oil circuit control two and the oil circuit control one of said structure share oil circuit L1, and simultaneously by the switching of working state control two oil circuit controls of the second solenoid valve, apparatus structure is simple; And even if the second electromagnetic valve work breaks down, (the second electromagnetic valve work is in left position, L1 and L4 disconnects), by regulating the working state (Pneumatic reversal valve is operated in right position) of Pneumatic reversal valve, pressure oil in catch block can realize the emergency braking of hydraulic disc brake through oil circuit control two L1, L3 and L6 retrieval system oil return mailbox, article two, oil circuit control structure is simple, and separate, cooperatively interact, greatly can reduce the emergency braking fault of hydraulic disc brake, improve drilling safety coefficient.
As preferred version of the present utility model, described oil circuit L3 is provided with the 5th pressure transducer, and described 5th pressure transducer is for detecting the pressure of described oil circuit L3.The electrohydraulic control system of said structure, oil circuit L3 arranges pressure transducer for detecting the pressure of oil circuit L3.Whether under control system is in emergency braking condition (now described Pneumatic reversal valve is when being operated in the right side), can be used for detecting described Pneumatic reversal valve has fault.Namely, under emergency braking condition, when the checkout value of the 5th pressure transducer is higher than setting value, described Pneumatic reversal valve breaks down, and namely Pneumatic reversal valve is operated in left position, L5 with L3 is communicated with, and has oil pressure in L3; When the checkout value of the 5th pressure transducer is normal, described Pneumatic reversal valve is working properly.
As preferred version of the present utility model, described oil circuit L1 is provided with the first pressure transducer, and described first pressure transducer is for detecting the pressure of described oil circuit L1.The electrohydraulic control system of said structure, oil circuit L1 arranges pressure transducer for detecting the pressure of oil circuit L1.Under control system is in parking braking state (now, described second solenoid valve is when being operated in the right side), can be used for detecting described second solenoid valve and whether have fault, under i.e. parking braking state, when the checkout value of the first pressure transducer is higher than setting value, described second solenoid valve breaks down, and namely the second electromagnetic valve work is communicated with at left position L1 with L3, and catch block fuel feeding skidding lost efficacy; When the checkout value of the 5th pressure transducer is normal, described second electromagnetic valve work is normal.
As preferred version of the present utility model, described left working clamp control system comprises oil circuit control L2, oil circuit L11, oil circuit L12, oil circuit L13, oil circuit L15, the first pilot operated directional control valve and the first relay valve; The outlet of described first pilot operated directional control valve is communicated with left working clamp by oil circuit L15; The right position outlet of oil circuit L13 and described first relay valve is passed through in the left position import of described first pilot operated directional control valve, and the right position import of described first relay valve is communicated with left working clamp oil sources by oil circuit L11; The left position return opening of described first relay valve is communicated with system oil return fuel tank, and the right wing import of described first pilot operated directional control valve is communicated with left working clamp oil sources by oil circuit L12; Described oil circuit control L2 is communicated with described oil circuit L1, and for controlling the working state of described first pilot operated directional control valve: when oil circuit control L2 is with no pressure, oil circuit L12 is communicated with oil circuit L15, when described oil circuit control L2 leads to high pressure oil, oil circuit L13 is communicated with oil circuit L15.The left working clamp control system of said structure, the working state of described first pilot operated directional control valve is controlled by oil circuit control L2, when catch block is in un-brake state, high pressure oil is had in L2, first pilot operated directional control valve working state is in left position, and left working clamp oil sources enters left working clamp through L11, L13 and L15 and carries out skidding; When catch block is in skidding state, without oil pressure in L2, the first pilot operated directional control valve working state is in right position, and left working clamp oil sources enters left working clamp through L12 and L15 and carries out skidding.
As preferred version of the present utility model, the working state of described first relay valve is controlled by pilot proportional reduction valve, described pilot proportional reduction valve is arranged on the oil circuit control of connection catch block oil sources and described first relay valve, the filler opening oil circuit of described pilot proportional reduction valve is provided with the first solenoid valve, and described first solenoid valve and described pilot proportional reduction valve open or close simultaneously.The electrohydraulic control system of said structure, under service braking state, the filler opening oil circuit of described pilot proportional reduction valve is provided with the first solenoid valve, described pilot proportional reduction valve and described first solenoid valve are opened simultaneously, conveniently for pilot proportional reduction valve provides pressure oil-source, make it normal work, for regulating working state and the outlet oil pressure size of the first relay valve.Under emergency braking or parking braking state, described pilot proportional reduction valve and described first solenoid valve are closed simultaneously, described first solenoid valve leaks back to system oil return fuel tank in order to stop catch block pressure oil-source by pilot proportional reduction valve (this valve is now in off position), can reach the object that rear long-time pressurize is shut down in hydraulic system power down; Simultaneously at rig after system power failure, the oil sources that dish system of stopping relies on accumulator to store within the regular hour still can untie catch block 3 ~ 4 times.
As preferred version of the present utility model, described right wing working clamp control system right wing working clamp control system comprises oil circuit control L2, oil circuit L14, oil circuit L10, oil circuit L8, oil circuit L9, the second pilot operated directional control valve and the second relay valve; The outlet of the second pilot operated directional control valve is communicated with right wing working clamp by oil circuit L14; Second pilot operated directional control valve left position import is by the left position outlet of L10 and the second relay valve, and the left position import of the second relay valve is communicated with right wing working clamp oil sources by L8, and the right position import of the second pilot operated directional control valve is communicated with right wing working clamp oil sources by L9; The right position return opening of the second relay valve is communicated with system oil return fuel tank; Described oil circuit control L2 is communicated with described oil circuit L1, and for controlling the working state of described second pilot operated directional control valve: when oil circuit control L2 is with no pressure, oil circuit L9 is communicated with oil circuit L14, when described oil circuit control L2 leads to high pressure oil, oil circuit L10 is communicated with oil circuit L14.The right wing working clamp control system of said structure, the working state of described second pilot operated directional control valve is controlled by oil circuit control L2, when catch block is in un-brake state, high pressure oil is had in L2, second pilot operated directional control valve working state is in left position, and right wing working clamp oil sources enters right wing working clamp through L8, L10 and L14 and carries out skidding; When catch block is in skidding state, without oil pressure in L2, the second pilot operated directional control valve working state is in right position, and right wing working clamp oil sources enters right wing working clamp through L9 and L14 and carries out skidding.
As preferred version of the present utility model, the working state of described second relay valve is controlled by pilot proportional reduction valve, described pilot proportional reduction valve is arranged on the oil circuit control of connection catch block oil sources and described second relay valve, the filler opening oil circuit of described pilot proportional reduction valve is provided with the first solenoid valve, and described first solenoid valve and described pilot proportional reduction valve open or close simultaneously.The electrohydraulic control system of said structure, under service braking state, the filler opening oil circuit of described pilot proportional reduction valve is provided with the first solenoid valve, described pilot proportional reduction valve and described first solenoid valve are opened simultaneously, conveniently for pilot proportional reduction valve provides pressure oil-source, make it normal work, for regulating working state and the outlet oil pressure size of the second relay valve.Under emergency braking or parking braking state, described pilot proportional reduction valve and described first solenoid valve are closed simultaneously, described first solenoid valve leaks back to system oil return mailbox fuel tank in order to stop catch block pressure oil-source by pilot proportional reduction valve (this valve is now in off position), can reach the object that rear long-time pressurize is shut down in hydraulic system power down; Simultaneously at rig after system power failure, the oil sources that dish system of stopping relies on accumulator to store within the regular hour still can untie catch block 3 ~ 4 times.
In sum, owing to have employed technique scheme, the beneficial effects of the utility model are:
1, hydraulic disc brake electrohydraulic control system of the present utility model, the oil return oil circuit control arranging catch block control system is two relatively independent oil circuit controls one and oil circuit control two, article two, any normal work of oil circuit control can realize the emergency braking function coiling the system of stopping, the reliability of emergency braking is high, and drilling safety is good.
2, electrohydraulic control system of the present utility model, oil circuit L3 arranges pressure transducer for detecting the pressure of oil circuit L3, and whether under control system is in emergency braking condition, can be used for detecting described Pneumatic reversal valve has fault; Oil circuit L1 arranges pressure transducer for detecting the pressure of oil circuit L1, whether under control system is in parking braking state, can be used for detecting described second solenoid valve has fault.
3, electrohydraulic control system of the present utility model, the filler opening oil circuit of described pilot proportional reduction valve is provided with the first solenoid valve, and described pilot proportional reduction valve and described first solenoid valve are beaten simultaneously and opened or closed.Under emergency braking or parking braking state, described pilot proportional reduction valve and described first solenoid valve are closed simultaneously, described first solenoid valve leaks back to system oil return mailbox fuel tank in order to stop catch block pressure oil-source by pilot proportional reduction valve (this valve is now in off position), can reach hydraulic system power down and shut down rear long-time pressurize; Simultaneously at rig after system power failure, the oil sources that dish system of stopping relies on accumulator to store within the regular hour still can untie catch block 3 ~ 4 times.
Accompanying drawing explanation
Fig. 1 is the hydraulic schematic diagram one that under the utility model electrohydraulic control system emergency braking operating mode, each valve member is communicated with situation;
Fig. 2 be in the utility model electrohydraulic control system hydraulic schematic diagram each solenoid valve under three kinds of different braking operating modes power failure state table;
Fig. 3 is that the utility model electrohydraulic control system carries out the programmed logic flow chart of self-inspection judgement to main braking valve member fault;
Fig. 4 is the hydraulic schematic diagram that under the utility model electrohydraulic control system service braking operating mode, each valve member is communicated with situation;
Fig. 5 is the hydraulic schematic diagram that under the utility model electrohydraulic control system parking braking operating mode, each valve member is communicated with clear condition;
Fig. 6 is the hydraulic schematic diagram two that under the utility model electrohydraulic control system emergency braking operating mode, each valve member is communicated with situation.
Mark in figure: 1-pilot proportional reduction valve, the 2.1-the first solenoid valve, the 2.2-the second solenoid valve, 3-electromagnetism Pneumatic valve, 4-pilot operated directional control valve, the 5.1-the first relay valve, 5.2-the second relay valve, 6-Pneumatic reversal valve, the 7.1-the first pilot operated directional control valve, 7.2-the second pilot operated directional control valve, 8.1-the first pressure transducer, the 8.2-the second pressure transducer, the 8.3-the three pressure transducer, 8.4-the four pressure transducer, the 8.5-the five pressure transducer; 9-left working clamp, 10-right wing working clamp, 11--catch block;
L1-the second solenoid valve 2.2 exports the oil circuit be connected with catch block 11;
The oil circuit control of L2-the first pilot operated directional control valve 7.1 and the second pilot operated directional control valve 7.2;
L3-Pneumatic reversal valve 6 exports the oil circuit be connected with the second solenoid valve 2.2 import;
The oil return circuit that L4-the second solenoid valve 2.2 return opening is connected with system oil return fuel tank;
L5-Pneumatic reversal valve 6 import exports with pilot operated directional control valve 4 oil circuit be connected;
L6-Pneumatic reversal valve 6 return opening and the L4 corresponding oil passage (oil return circuit that Pneumatic reversal valve 6 return opening is connected with system oil return fuel tank; );
L7-pilot operated directional control valve 4 filler opening and catch block 11 oil sources corresponding oil passage;
L8-the second relay valve 5.2 filler opening and right wing working clamp oil sources corresponding oil passage;
L9-the second pilot operated directional control valve 7.2 filler opening and right wing working clamp oil sources corresponding oil passage;
L10-the second relay valve 5.2 exports the oil circuit be connected with 7.2 left the imports of the second pilot operated directional control valve;
L11-the first relay valve 5.1 filler opening and left working clamp oil sources corresponding oil passage;
L12-the first pilot operated directional control valve 7.1 filler opening and left working clamp oil sources corresponding oil passage;
L13-the first relay valve 5.1 exports the oil circuit be connected with 7.1 left the imports of the first pilot operated directional control valve;
L14-the second pilot operated directional control valve 7.2 and right wing working clamp 10 corresponding oil passage;
L15-the first pilot operated directional control valve 7.1 and left working clamp 9 corresponding oil passage.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment 1
The following stated L1 in the present embodiment ~ L15 all represents oil circuit.
As shown in Figure 1, Figure 4 and Figure 5, the hydraulic disc brake electrohydraulic control system of the present embodiment, comprises left working clamp control system, right wing working clamp control system and catch block control system.
As shown in Fig. 1, Fig. 4, Fig. 5 and Fig. 6, catch block control system oil circuit L1, L3, L4, L5, L6, L7, the second solenoid valve 2.2, Pneumatic reversal valve 6 and pilot operated directional control valve 4.The outlet of the second solenoid valve 2.2 is connected with catch block 11 by L1, and L1 is provided with the first pressure transducer 8.1, first pressure transducer 8.1 for detecting the oil pressure state on oil circuit L1.The return opening of the second solenoid valve 2.2 is communicated with system oil return fuel tank by L4, and the import of the second solenoid valve 2.2 is by L3 and Pneumatic reversal valve 6 outlet.L3 is provided with the 5th pressure transducer the 8.5, five pressure transducer 8.5 for detecting the oil pressure state on oil circuit L3.The return opening of Pneumatic reversal valve 6 is communicated with system oil return fuel tank by L6, and the import of Pneumatic reversal valve 6 is by the outlet of L5 and pilot operated directional control valve 4.The import of pilot operated directional control valve 4 is communicated with catch block oil sources by L7.L7 is provided with the 4th pressure transducer the 8.4, four pressure transducer 8.4 for detecting the oil pressure state on oil circuit L7.The working state of the second solenoid valve 2.2 is controlled by electromagnet YV4.During electromagnet YV4 dead electricity, the working state of the second solenoid valve 2.2 is in right position, and now oil circuit L1 and L4 is communicated with, and the oil in catch block 11 is through L1 and L4 retrieval system backflow fuel tank, and L1 is in passive state, and catch block 11 is in skidding state, as Fig. 1.When electromagnet YV4 obtains electric, the working state of the second solenoid valve 2.2 is in left position, and now L1 and L3 is communicated with, and the pressure state of L1 depends on the pressure state of L3.The working state of Pneumatic reversal valve 6 is controlled by electromagnetism Pneumatic valve 3, and the working state of electromagnetism Pneumatic valve 3 is controlled by electromagnet YV3.During electromagnet YV3 dead electricity, electromagnetism Pneumatic valve 3 is operated in left position, and Pneumatic reversal valve 6 working state is in right position, and oil circuit L3 and L6 is communicated with.When electromagnet YV3 obtains electric, electromagnetism Pneumatic valve 3 is operated in right position, and Pneumatic reversal valve 6 working state is in left position, and L3 and L5 is communicated with.Namely when electromagnet YV4 obtains electric, the working state of the second solenoid valve 2.2 is in left position, oil circuit L1 and L4 disconnects, as long as now control electromagnet YV3 dead electricity, electromagnetism Pneumatic valve 3 is operated in left position, Pneumatic reversal valve 6 working state is in right position, oil circuit L3 and L6 is communicated with, and the oil in catch block 11 is through L1, L3 and L6 retrieval system backflow fuel tank, and L1 is in passive state, catch block 11 is in skidding state, as Fig. 6.Above-mentioned catch block oil return oil circuit control comprises two relatively independent oil circuit controls, is the oil circuit control one of L1, L4 composition and the oil circuit control two of L1, L3, L6 composition respectively.Article two, any normal work of oil circuit control can realize the emergency braking function coiling the system of stopping, and substantially increases the reliability of emergency braking, improves drilling safety coefficient.
Right wing working clamp control system comprises oil circuit L2, L14, L10, L8, L9, the second pilot operated directional control valve 7.2 and the second relay valve 5.2.The outlet of the second pilot operated directional control valve 7.2 is communicated with right wing working clamp 10 by oil circuit L14, and L14 is provided with the second pressure transducer 8.2, second pressure transducer 8.2 for detecting the oil pressure state on oil circuit L14.Second pilot operated directional control valve 7.2 left import is by the left position outlet of L10 and the second relay valve 5.2, and the right position import of the second pilot operated directional control valve 7.2 is communicated with right wing working clamp oil sources by L9.The left position import of the second relay valve 5.2 is communicated with right wing working clamp oil sources by L8, and the right position return opening of the second relay valve 5.2 is communicated with system oil return fuel tank.
Left working clamp control system comprises oil circuit L2, L11, L12, L13, L15, the first pilot operated directional control valve 7.1 and the first relay valve 5.1.The outlet of the first pilot operated directional control valve 7.1 is communicated with the fuel tank of left working clamp by L15, and L15 is provided with the 3rd pressure transducer the 8.3, three pressure transducer 8.3 for detecting the oil pressure state on oil circuit L15.The left position import of the first pilot operated directional control valve 7.1 is by the right position outlet of L13 and the first relay valve 5.1, the right position import of the first relay valve 5.1 is communicated with left working clamp oil sources by L11, and the left position return opening of the first relay valve 5.1 is communicated with system oil return fuel tank.The right wing import of the first pilot operated directional control valve 7.1 is communicated with left working clamp oil sources by L12.
First pilot operated directional control valve 7.1, second pilot operated directional control valve 7.2 is communicated with oil circuit L1 respectively by oil circuit control L2, and the working state of the first pilot operated directional control valve 7.1, second pilot operated directional control valve 7.2 realizes controlling by oil circuit control L2.When oil circuit control L2 and oil circuit L1 is with no pressure (catch block 11 is in braking state-emergency braking or parking braking), first pilot operated directional control valve 7.1 and the second pilot operated directional control valve 7.2 are operated in right position, and left working clamp 9 realizes the skidding of left working clamp 9 by L12 and L15 fuel feeding; Right wing working clamp 10 realizes right wing working clamp 10 skidding by L9 and L14 fuel feeding.When oil circuit control L2 and oil circuit L1 is connected with high pressure oil (catch block 11 is in un-brake state-service braking), the first pilot operated directional control valve 7.1 and the second pilot operated directional control valve 7.2 are operated in left position, L13 with L15 is communicated with, L10 with L14 is communicated with.
The working state of the first relay valve 5.1 and the second relay valve 5.2 is controlled by pilot proportional reduction valve 1, and pilot proportional reduction valve 1 is arranged on the oil circuit control that L7 is connected with the first relay valve 5.1, second relay valve 5.2.The filler opening oil circuit of pilot proportional reduction valve 1 is provided with the first solenoid valve 2.1.The working state of pilot proportional reduction valve 1 is controlled by electromagnet YV1, and the working state of the first solenoid valve 2.1 is controlled by electromagnet YV2.As shown in Figure 2, Figure 4 shows, under service braking state, simultaneously requirement on automatically controlled, the while that YV1 obtaining electric electromagnet YV2 also electric, YV2 obtains electric first solenoid valve 2.1 that makes and opens, provide pressure oil-source to pilot proportional reduction valve 1, make it normal work, for regulating working state and the outlet oil pressure size of the first relay valve 5.1 and the second relay valve 5.2.Under emergency braking or parking braking state; YV1 dead electricity is electromagnet YV2 also dead electricity simultaneously; YV2 dead electricity makes the first solenoid valve 2.1 disconnect; system oil return mailbox fuel tank is leaked back to by pilot proportional reduction valve 1 (this valve is now in off position) to stop catch block pressure oil-source; thus reach the object that rear long-time pressurize is shut down in hydraulic system power down; simultaneously at rig after system power failure, the oil sources that dish system of stopping relies on accumulator to store within the regular hour still can untie catch block 3 ~ 4 times.
The right wing working clamp control system of said structure and left working clamp oil circuit control:
Service braking operating mode as shown in Figure 4, this operating mode lower electromagnet YV3, YV4 all electric, electromagnetism Pneumatic valve 3 is operated in right position, and Pneumatic reversal valve 6, second solenoid valve 2.2 is all operated in left position, catch block oil sources can enter catch block 11 by oil circuit L7, L5, L3, L1, makes catch block 11 un-brake.Meanwhile, under this operating mode, electromagnet YV1, YV2 also all electric, make the first relay valve 5.1 be operated in right position, the second relay valve 5.2 be operated in left position.And oil circuit control L2 is connected with high pressure oil, the first pilot operated directional control valve 7.1, second pilot operated directional control valve 7.2 is made to be operated in left position, left working clamp oil sources can enter left working clamp 9 by oil circuit L11, L13, L15 and make its braking brake, and right wing working clamp oil sources can enter right wing working clamp 10 by oil circuit L8, L10, L14 makes its braking brake.Under service braking operating mode, by varying in size of service braking handle given solenoid valve YV1 electrical signal, the hydraulic fluid pressure varied in size can be exported by corresponding control pilot proportional reduction valve 1, and then control by the first relay valve 5.1 and the second relay valve 5.2 size entering left and right road working clamp hydraulic fluid pressure, make left/right road working clamp export the brake torque varied in size.
As shown in Figure 5, solenoid valve YV3 obtains electric parking braking operating mode, and electromagnetism Pneumatic valve 3 is operated in right position, Pneumatic reversal valve 6 is operated in left position; Solenoid valve YV4 dead electricity, the second solenoid valve 2.2 works right position; The pressure oil of such catch block 11 can pass through oil circuit L1, L4 oil sump tank, and catch block 11 is braked; Also make oil circuit L2 decompression simultaneously, and then the first pilot operated directional control valve 7.1, second pilot operated directional control valve 7.2 is worked right position, left working clamp oil sources can enter left working clamp 9 by oil circuit L12, L15 and make its braking brake, and right wing working clamp oil sources can enter right wing working clamp 10 by oil circuit L9, L14 makes its braking brake.
The two states of emergency braking operating mode as shown in Fig. 1, Fig. 6: in Fig. 1, solenoid valve YV3 dead electricity, electromagnetism Pneumatic valve 3 is operated in left position, Pneumatic reversal valve 6 is operated in right position; Solenoid valve YV4 dead electricity, the second solenoid valve 2.2 is operated in right position; The pressure oil of such catch block can make catch block 11 brake by oil circuit L1, L4 system oil return simultaneously; Further, connecting path shown in Fig. 6, when the second solenoid valve 2.2 is operated in left position, the pressure oil of catch block 11 still can pass through oil circuit L1, L3, L6 system oil return, and catch block 11 is braked.Also make oil circuit L2 decompression simultaneously, and then make the first pilot operated directional control valve 7.1, liquid controlled reversing 7.2 is operated in right position, therefore left working clamp oil sources can enter left working clamp 9 by oil circuit L12, L15 and make its braking brake, and right wing working clamp oil sources can enter right wing working clamp 10 by oil circuit L9, L14 makes its braking brake.
Hydraulic disc brake electrohydraulic control system of the present utility model, the stop emergency braking of system of dish can be realized by two relatively independent oil circuit controls, is the oil circuit control one of L1, L4 composition and the oil circuit control two of L1, L3, L6 composition respectively.Article two, any normal work of oil circuit control can realize the emergency braking function coiling the system of stopping.As shown in Figure 2; require it is these two electromagnet of control YV3 and YV4 dead electricity (namely requiring that these two oil circuit controls participate in emergency braking simultaneously and control) simultaneously under emergency braking operating mode on automatically controlled; if so wherein the valve member of a control oil circuit control breaks down and still can realize coiling the emergency braking of the system of stopping; to reach the object of duplicate protection; the reliability of emergency braking is high, and drilling safety coefficient is high.
In addition, electrohydraulic control system of the present utility model, oil circuit L3 has increased newly the 5th pressure transducer 8.5, and for monitoring the oil pressure state on oil circuit L3, the first pressure transducer 8.1 on original L1 is then for detecting the oil pressure state on oil circuit L1.Only need to be provided with on automatically controlled one to be specifically designed to program that main braking valve member fault detects automatically and can to detect the second solenoid valve 2.2 and whether Pneumatic reversal valve 6 breaks down, the logical flow chart of program as shown in Figure 3.As shown in Fig. 2, Fig. 5, dish is stopped under system parking braking operating mode, electromagnet YV4 dead electricity, electromagnet YV3 obtain electric, now oil circuit L1 is in decompression state and oil circuit L3 has been in pressure condition, by subroutine B (program left-hand branch, belong to the signal that parking brake button sends) can check whether the second solenoid valve 2.2 on oil circuit control one has fault, if the first pressure transducer 8.1 checkout value is greater than setting value, then the second solenoid valve 2.2 breaks down, if the first pressure transducer 8.1 checkout value is less than or equal to setting value, then the second solenoid valve 2.2 is working properly.As Fig. 2, shown in Fig. 1, dish is stopped under system emergency damped condition, electromagnet YV4 dead electricity, electromagnet YV3 dead electricity, Pneumatic reversal valve 6 is operated in the right side, now oil circuit L3 is in decompression state, by subroutine A (program right-hand branch, belong to the signal that emergency stop button sends) can check whether electromagnetism Pneumatic valve 3 on oil circuit control two and Pneumatic reversal valve 6 have fault, if the 5th pressure transducer 8.5 checkout value is greater than setting value, then electromagnetism Pneumatic valve 3 and Pneumatic reversal valve 6 break down, if the 5th pressure transducer 8.5 checkout value is less than or equal to setting value, then electromagnetism Pneumatic valve 3 and Pneumatic reversal valve 6 working properly.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. a hydraulic disc brake electrohydraulic control system, comprise left working clamp control system, right wing working clamp control system and catch block control system, it is characterized in that: the oil return oil circuit control of described catch block control system comprises oil circuit control one and oil circuit control two, and described oil circuit control one is communicated with catch block and system oil return fuel tank respectively with described oil circuit control two.
2. hydraulic disc brake electrohydraulic control system according to claim 1, it is characterized in that: described oil circuit control one comprises oil circuit L1, oil circuit L4 and the second solenoid valve, described oil circuit L1 is for being communicated with outlet and the catch block of the second solenoid valve, and described oil circuit L4 is for being communicated with return opening and the system oil return fuel tank of the second solenoid valve.
3. hydraulic disc brake electrohydraulic control system according to claim 2, is characterized in that: described oil circuit control two comprises oil circuit L1, oil circuit L3, oil circuit L6, the second solenoid valve and Pneumatic reversal valve; Described oil circuit L1 is for being communicated with outlet and the catch block of the second solenoid valve; Described oil circuit L3 is for the outlet of the import and described Pneumatic reversal valve that are communicated with described second solenoid valve, and the return opening of described Pneumatic reversal valve is communicated with system oil return fuel tank by oil circuit L6, and the import of described Pneumatic reversal valve is communicated with catch block oil sources.
4. hydraulic disc brake electrohydraulic control system according to claim 3, is characterized in that: described oil circuit L3 is provided with the 5th pressure transducer, and described 5th pressure transducer is for detecting the pressure of described oil circuit L3.
5. hydraulic disc brake electrohydraulic control system according to claim 2, is characterized in that: described oil circuit L1 is provided with the first pressure transducer, and described first pressure transducer is for detecting the pressure of described oil circuit L1.
6. the hydraulic disc brake electrohydraulic control system according to claim 2 ~ 5 any one, is characterized in that:
Described left working clamp control system comprises oil circuit control L2, oil circuit L11, oil circuit L12, oil circuit L13, oil circuit L15, the first pilot operated directional control valve and the first relay valve; The outlet of described first pilot operated directional control valve is communicated with left working clamp by oil circuit L15; The right position outlet of oil circuit L13 and described first relay valve is passed through in the left position import of described first pilot operated directional control valve, and the right position import of described first relay valve is communicated with left working clamp oil sources by oil circuit L11; The left position return opening of described first relay valve is communicated with system oil return fuel tank, and the right wing import of described first pilot operated directional control valve is communicated with left working clamp oil sources by oil circuit L12; Described oil circuit control L2 is communicated with described oil circuit L1, and for controlling the working state of described first pilot operated directional control valve: when oil circuit control L2 is with no pressure, oil circuit L12 is communicated with oil circuit L15, when described oil circuit control L2 leads to high pressure oil, oil circuit L13 is communicated with oil circuit L15.
7. hydraulic disc brake electrohydraulic control system according to claim 6, it is characterized in that: the working state of described first relay valve is controlled by pilot proportional reduction valve, described pilot proportional reduction valve is arranged on the oil circuit control of connection catch block oil sources and described first relay valve, the filler opening oil circuit of described pilot proportional reduction valve is provided with the first solenoid valve, and described first solenoid valve and described pilot proportional reduction valve open or close simultaneously.
8. the hydraulic disc brake electrohydraulic control system according to claim 2 ~ 5 any one, is characterized in that:
Described right wing working clamp control system comprises oil circuit control L2, oil circuit L14, oil circuit L10, oil circuit L8, oil circuit L9, the second pilot operated directional control valve and the second relay valve; The outlet of the second pilot operated directional control valve is communicated with right wing working clamp by oil circuit L14; Second pilot operated directional control valve left position import is by the left position outlet of L10 and the second relay valve, and the left position import of the second relay valve is communicated with right wing working clamp oil sources by L8, and the right position import of the second pilot operated directional control valve is communicated with right wing working clamp oil sources by L9; The right position return opening of the second relay valve is communicated with system oil return fuel tank; Described oil circuit control L2 is communicated with described oil circuit L1, and for controlling the working state of described second pilot operated directional control valve: when oil circuit control L2 is with no pressure, oil circuit L9 is communicated with oil circuit L14, when described oil circuit control L2 leads to high pressure oil, oil circuit L10 is communicated with oil circuit L14.
9. hydraulic disc brake electrohydraulic control system according to claim 8, it is characterized in that: the working state of described second relay valve is controlled by pilot proportional reduction valve, described pilot proportional reduction valve is arranged on the oil circuit control of connection catch block oil sources and described second relay valve, the filler opening oil circuit of described pilot proportional reduction valve is provided with the first solenoid valve, and described first solenoid valve and described pilot proportional reduction valve open or close simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420614764.5U CN204140723U (en) | 2014-10-21 | 2014-10-21 | A kind of electrohydraulic control system of hydraulic disc brake |
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| CN201420614764.5U CN204140723U (en) | 2014-10-21 | 2014-10-21 | A kind of electrohydraulic control system of hydraulic disc brake |
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| CN204140723U true CN204140723U (en) | 2015-02-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115523247A (en) * | 2022-09-16 | 2022-12-27 | 中国长江电力股份有限公司 | Emergency braking system and method for ship lift ship reception chamber driving device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115523247A (en) * | 2022-09-16 | 2022-12-27 | 中国长江电力股份有限公司 | Emergency braking system and method for ship lift ship reception chamber driving device |
| CN115523247B (en) * | 2022-09-16 | 2024-04-16 | 中国长江电力股份有限公司 | Emergency braking system and method for ship lift ship reception box driving device |
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