CN203477448U - Three-position four-way valve and brake system with same - Google Patents
Three-position four-way valve and brake system with same Download PDFInfo
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- CN203477448U CN203477448U CN201320378333.9U CN201320378333U CN203477448U CN 203477448 U CN203477448 U CN 203477448U CN 201320378333 U CN201320378333 U CN 201320378333U CN 203477448 U CN203477448 U CN 203477448U
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Abstract
The utility model discloses a three-position four-way valve. The three-position four-way valve comprises a driving device, a valve body internally provided with a valve core cavity and a slide valve arranged in the valve core cavity and adaptive to the valve core cavity, wherein the valve body is provided with a high-pressure oil inlet, an oil returning port, a low-pressure oil inlet and an oil outlet; the slide valve is provided with an annular slot and a throttle slot; the slide valve is respectively positioned at a middle position, a second position and a third position under the driving of the driving device, when the sliding valve is positioned at the middle position, the low-pressure oil inlet is communicated with the oil outlet; when the sliding valve is positioned at the second position, the oil returning port and the oil outlet are communicated; when the sliding valve is positioned at the third position, the high-pressure oil inlet and the oil outlet are communicated. The three-position four-way valve and a brake system adopting the three-position four-way valve are strong in system compatibility, so a vehicle can be smoothly and flexibly braked and the operation force is light. When the vehicle is stopped at a rampway, the vehicle sliding phenomenon is avoided even under the condition of cutting off the power of a transmission box, so the safety is greatly improved.
Description
Technical field
The utility model relates to hydraulic control field, particularly a kind of three-position four-way valve and the braking system with this three-position four-way valve.
Background technique
In hydraulic control field, selector valve is for changing the disconnected relation of Tong ﹑ between different pipelines, and the working position number according to spool in valve body divides tri-of Liang Wei ﹑ etc.; According to controlled port number, divide Liang Tong ﹑ tri-Tong ﹑ tetra-Tong ﹑ five-way etc.; According to spool driving mode, divide the moving ﹑ of the moving ﹑ electricity of manual ﹑ machine to surge etc.Wherein, three-position four-way valve is widely used in the braking system in industry and vehicle.Yet due to existing three-position four-way valve and the intrinsic defect with the braking system of these three-position four-way valves, the braking system of take in vehicle is example, while stopping in ramp, the in the situation that of gearbox power cutoff, can slip car phenomenon, cause the Security of personnel, goods can not be guaranteed.In ramp, stop or during braking because traditional dynamic braking brake-apply is all influential to the Economy of the life-span of gearbox and vehicle and emission performance, so, general all stepping powers cut-out or fine motion pedal are to reach the object of braking, now engine power is cut off, can not on gearbox, set up and keep oil pressure, the car that slips when uphill starting is unavoidable, simultaneously, traditional braking will again and again be stepped on braking when the gear shift operation of advancing or falling back, and driver's labor intensity is large.
Summary of the invention
The purpose of this utility model is to provide a kind of can provide the three-position four-way valve of the higher flexible braking of Security and heavy braking and the braking system with this three-position four-way valve.
To achieve these goals, the technical solution of the utility model is as follows:
A three-position four-way valve, comprise drive unit, in be provided with the valve body of spool chamber and be positioned at spool chamber and the guiding valve of this spool chamber adaptation, wherein, on valve body, be provided with high pressure filler opening, return opening, low pressure filler opening and oil outlet; On guiding valve, have circular groove and throttling groove,
Guiding valve can lay respectively at meta, the second place and the 3rd position under the driving of drive unit:
When guiding valve is positioned at meta, low pressure filler opening is communicated with oil outlet by throttling groove;
When guiding valve is positioned at the second place, return opening is communicated with oil outlet by throttling groove;
When guiding valve is positioned at the 3rd position, high pressure filler opening is communicated with oil outlet by circular groove.
Preferably, in valve body, be respectively arranged with the leader channel being communicated with low pressure filler opening and the drainback passage being communicated with return opening; Drive unit comprises solenoid valve and operating handle, and this solenoid valve is communicated with spool chamber, and leader channel and drainback passage are communicated with solenoid valve in valve body; The joint of this solenoid valve and spool chamber is positioned on the chamber wall of the spool chamber of the throttling groove side of guiding valve; Be positioned in abutting connection with the spool chamber of the circular groove side of guiding valve and be provided with piston, this piston and spool chamber adapt and can slide along spool chamber wall, one side of piston is fixed with push rod, the opposite side of this piston is provided with operating handle, wherein, operating handle can be connected the position that also can only contact with operating handle at piston with piston groove is set, and make operating handle relative fixing with the position of piston, and piston can move under the promotion of operating handle.
Between in spool chamber, at the bottom of the throttling groove side of guiding valve and spool chamber chamber, be provided with the first spring.Preferably, in spool chamber, between push rod and the circular groove side of guiding valve, be provided with the second spring.Wherein, the first spring and the second spring are except rising buffer function, and also the movement for guiding valve provides restoring force, match guarantee carrying out smoothly of each stage spool position conversion with drive unit.
Guiding valve is provided with conical section, conical section partly without leave near-ring shape groove one end to increasing gradually away from circular groove one end, between conical section and valve interior wall, be formed with throttling groove.The design of this structure of throttling groove can produce sluggishness, throttling action, makes can carry out gently through the braking process of its generation.
Preferably, drainback passage is also communicated with spool chamber, and the joint of drainback passage and spool chamber is positioned on the chamber wall of the spool chamber of the circular groove side of guiding valve.
Preferably, drainback passage itself and return opening connectivity part and and solenoid valve connectivity part between be provided with damping hole.
Preferably, one end that spool chamber is provided with piston is provided with snap ring, spacing in order to piston is carried out, and makes it remain at motion in spool chamber.
Preferably, be also provided with seal ring on piston, sealing circle matches to realize sealing and prevents the oil liquid leakage in spool chamber with piston.
Preferably, be also provided with the valve body flange that protrudes from valve interior surface on valve interior wall, valve body flange is between the connectivity part and high pressure filler opening and the connectivity part of spool chamber of drainback passage and spool chamber, for carrying out spacing to piston.
The utility model also provides a kind of braking system, comprise hydraulic oil tank, oil hydraulic pump, reduction valve, accumulator, brake actuator and above-described three-position four-way valve, hydraulic oil tank is communicated with the high pressure filler opening of three-position four-way valve, through oil hydraulic pump, is communicated with, through oil hydraulic pump and reduction valve, is communicated with the low pressure filler opening of three-position four-way valve with accumulator through oil hydraulic pump respectively, accumulator is communicated with the high pressure filler opening of three-position four-way valve again, brake actuator is communicated with the oil outlet of three-position four-way valve, and the return opening of three-position four-way valve is communicated with hydraulic oil tank.
Preferably, above-mentioned braking system also comprises diverter valve, one-way valve, oil suction filter core and oil return filter core, the input end of diverter valve is communicated with oil hydraulic pump, the output terminal of diverter valve is communicated with hydraulic oil tank, through reduction valve, is communicated with, through one-way valve, is communicated with, through one-way valve, is communicated with the high pressure filler opening of three-position four-way valve with accumulator with the low pressure filler opening of three-position four-way valve through oil return filter core respectively, and oil suction filter core is arranged between oil hydraulic pump and hydraulic oil tank.
A kind of braking system that the utility model also provides in addition, the second hydraulic oil tank, the second oil hydraulic pump, the second reduction valve, the second accumulator, the second brake actuator, the second braking maneuver device, the second accelerating controller, the second Idle Switch and foregoing three-position four-way valve, the second hydraulic oil tank is communicated with the high pressure filler opening of three-position four-way valve through the second oil hydraulic pump respectively, through the second oil hydraulic pump, be communicated with the second accumulator, through the second oil hydraulic pump and the second reduction valve, be communicated with the low pressure filler opening of three-position four-way valve, the second accumulator is communicated with the high pressure filler opening of three-position four-way valve again, the second brake actuator is communicated with the oil outlet of three-position four-way valve, the return opening of three-position four-way valve is communicated with the second hydraulic oil tank, the second braking maneuver device is communicated with the operating handle of three-position four-way valve, the second accelerating controller is communicated with the solenoid valve of three-position four-way valve by the second Idle Switch.
Preferably, above-mentioned braking system also comprises the second diverter valve, the second one-way valve, the second oil suction filter core, the second oil return filter core and second is concentrated return tube, the input end of the second diverter valve is communicated with the second oil hydraulic pump, the output terminal of the second diverter valve concentrates return tube and the second oil return filter core to be communicated with the second hydraulic oil tank through second respectively, through the second reduction valve, be communicated with the low pressure filler opening of three-position four-way valve, through the second one-way valve, be communicated with the second accumulator, through the second one-way valve, be communicated with the high pressure filler opening of three-position four-way valve, the second oil suction filter core is arranged between the second oil hydraulic pump and the second hydraulic oil tank.
The braking system that adopts three-position four-way valve of the present utility model and have this three-position four-way valve has the following advantages:
When 1, the brake valve using this three-position four-way valve as industrial vehicle uses, characteristic due to this valve, can make that car brakeing is smooth-going, sensitive, steering force is light, while stopping in ramp simultaneously, the in the situation that of gearbox power cutoff, can not slip car phenomenon, greatly improve the Security of personnel, goods yet;
2, because the power source of braking oil sources and hydraulic system is with going out a place, both can in system, use special-purpose brake pump, also can preferentially shunt by hydraulic system, compatible strong;
3, only need by realizing flexible braking and heavy braking to the control of operating handle, user is flexible operating as the case may be;
4, make simply, be easy to large-scale mass production, expection will have the larger market demand future, and cost of production is lower, and earning rate is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model three-position four-way valve.
Fig. 2 is the schematic diagram of the utility model three-position four-way valve.
Fig. 3 is the structural representation with a kind of braking system of three-position four-way valve of the present utility model.
Fig. 4 is the structural representation with the another kind of braking system of three-position four-way valve of the present utility model.
Fig. 5 is the structural representation of the solenoid valve in three-position four-way valve of the present utility model.
Fig. 6 is the structural representation of the guiding valve of the utility model three-position four-way valve while being positioned at meta.
Fig. 7 is the structural representation of the guiding valve of the utility model three-position four-way valve while being positioned at the second place.
Fig. 8 is the structural representation of the guiding valve of the utility model three-position four-way valve while being positioned at the 3rd position.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, be the structural drawing of three-position four-way valve of the present utility model, wherein, 1 is valve body, 2 is guiding valve, and 3 is solenoid valve, and 4 is piston, and 5 is operating handle, 6 is push rod, and 701 is the first spring, and 702 is the second spring, and 101 is high pressure filler opening, 102 is return opening, and 103 is low pressure filler opening, and 104 is oil outlet, and 105 is leader channel, 106 is drainback passage, and 201 is circular groove, and 202 is throttling groove, and 1061 is damping hole, 107 is snap ring, and 108 is seal ring, and 109 is valve body flange.
In valve body 1, be provided with spool chamber, guiding valve 2 is positioned at spool chamber adaptive with this spool chamber.High pressure filler opening 101, return opening 102, low pressure filler opening 103 and oil outlet 104 are arranged on valve body 1.Guiding valve 2 can lay respectively at meta, the second place and the 3rd position under the driving of drive unit.
When guiding valve 2 is positioned at meta, low pressure filler opening 103 is communicated with oil outlet 104 by throttling groove 202;
When guiding valve 2 is positioned at the second place, return opening 102 is communicated with oil outlet 104 by throttling groove 202;
When guiding valve 2 is positioned at the 3rd position, high pressure filler opening 101 is communicated with oil outlet 104 by circular groove 201.
In valve body 1, leader channel 105 is communicated with low pressure filler opening 103, and drainback passage 106 is communicated with return opening 102.Solenoid valve 3 and operating handle 5 are the drive unit of three-position four-way valve of the present utility model.Solenoid valve 3 is communicated with spool chamber, and leader channel 105 and drainback passage 106 are communicated with solenoid valve 3 in valve body 1; The joint of solenoid valve 3 and spool chamber is positioned on the chamber wall of the spool chamber of throttling groove 202 sides of guiding valve 2.Piston 4 is arranged at the spool chamber being positioned in abutting connection with circular groove 201 sides of guiding valve 2, and piston 4 adapts with spool chamber and can slide along spool chamber wall, and a side of piston 4 is fixed with push rod 6, and the opposite side of piston 4 is provided with operating handle 5.Piston 4 arranges groove with the position that operating handle 5 contacts, and make operating handle 5 relative fixing with the position of piston 4, and piston 4 can move under the promotion of operating handle 5.
Drainback passage 106 is also communicated with spool chamber, and the joint of drainback passage and spool chamber is positioned on the chamber wall of the spool chamber of circular groove 201 sides of guiding valve 2.
The first spring 701 is arranged in spool chamber, throttling groove 202 sides of guiding valve 2 with at the bottom of spool chamber chamber between, the second spring 702 is arranged at that spool chamber is interior, between push rod 6 and circular groove 201 sides of guiding valve 2.
As shown in Figure 2, be the schematic diagram of the utility model three-position four-way valve, 3 is solenoid valve, and 5 is operating handle, and 101 is high pressure filler opening, and 102 is return opening, and 103 is low pressure filler opening, and 104 is oil outlet.
As shown in Figure 3,801 is accumulator, and 802 is reduction valve, and 803 is hydraulic oil tank, and 804 is oil hydraulic pump, and 805 is brake actuator, and 807 is diverter valve, and 808 is one-way valve, and 809 is oil suction filter core, and 810 is oil return filter core.Hydraulic oil tank 803 is communicated with the high pressure filler opening 101 of three-position four-way valve, through oil hydraulic pump 804, is communicated with, through oil hydraulic pump 804 and reduction valve 802, is communicated with the low pressure filler opening 103 of three-position four-way valve with accumulator 801 through oil hydraulic pump 804 respectively.Accumulator 801 is communicated with the high pressure filler opening 101 of three-position four-way valve again.Brake actuator 805 is communicated with the oil outlet 104 of three-position four-way valve.The return opening 102 of three-position four-way valve is communicated with hydraulic oil tank 803.
The input end of diverter valve 807 is communicated with oil hydraulic pump 804, the output terminal of diverter valve 807 is communicated with hydraulic oil tank 803, through reduction valve 802, is communicated with, through one-way valve 808, is communicated with, through one-way valve 808, is communicated with the high pressure filler opening 101 of three-position four-way valve with accumulator 801 with the low pressure filler opening 103 of three-position four-way valve through oil return filter core 810 respectively, and oil suction filter core 809 is arranged between oil hydraulic pump 804 and hydraulic oil tank 803.
As shown in Figure 4,901 is the second hydraulic oil tank, and 902 is the second oil hydraulic pump, 903 is the second reduction valve, and 904 is the second accumulator, and 905 is the second brake actuator, 906 is the second braking maneuver device, and 907 is the second accelerating controller, and 909 is the second diverter valve, 910 is the second one-way valve, and 911 is the second oil suction filter core, and 912 is the second oil return filter core, 913 is the second concentrated return tube, 914 is the second Idle Switch, and 915 is the second motor, and 916 is the second braking light switch.The second hydraulic oil tank 901 is communicated with the high pressure filler opening 101 of three-position four-way valve, through the second oil hydraulic pump 902, is communicated with, through the second oil hydraulic pump 902 and the second reduction valve 903, is communicated with the low pressure filler opening 103 of three-position four-way valve with the second accumulator 904 through the second oil hydraulic pump 902 respectively.The second accumulator 904 is communicated with the high pressure filler opening 101 of three-position four-way valve again.The second brake actuator 905 is communicated with the oil outlet 104 of three-position four-way valve.The return opening 102 of three-position four-way valve is communicated with the second hydraulic oil tank 901.The second braking maneuver device 906 is communicated with the operating handle 5 of three-position four-way valve, and the second accelerating controller 907 is communicated with the solenoid valve 3 of three-position four-way valve by the second Idle Switch 914.
The input end of the second diverter valve 909 is communicated with the second oil hydraulic pump 902, the output terminal of the second diverter valve 909 is concentrated return tube 913 and the second oil return filter core 912 is communicated with the second hydraulic oil tank 901, through the second reduction valve 903, be communicated with, through the second one-way valve 910, be communicated with, through the second one-way valve 910, be communicated with the high pressure filler opening 101 of three-position four-way valve with the second accumulator 904 with the low pressure filler opening 103 of three-position four-way valve through second respectively, and the second oil suction filter core 911 is arranged between the second oil hydraulic pump 902 and the second hydraulic oil tank 901.
As shown in Figure 5,105 is leader channel, and 106 is drainback passage, and 301 is solenoid valve oil outlet.When solenoid valve 3 does not power on, solenoid valve oil outlet 301 is communicated with drainback passage 106, hydraulic oil in the spool chamber at the first spring 701 places enters the drainback passage 106 of solenoid valve 3 by solenoid valve oil outlet 301, and flows out by the return opening 102 being connected with drainback passage 106.When solenoid valve 3 powers on, solenoid valve 3 actions, solenoid valve oil outlet 301 is communicated with leader channel 105, hydraulic oil from low pressure filler opening 103 in solenoid valve oil outlet 301 enters the spool chamber at the first spring 701 places, now under the oil pressure of hydraulic oil and the acting in conjunction of the first spring 701, produce thrust and make guiding valve 2 fast moving, now high pressure filler opening 101 and low pressure filler opening 103 are all closed, oil outlet 104 and return opening 102 is communicated with, and final controlling element (being brake actuator 805 in Fig. 3 or the second brake actuator 905 in Fig. 4) discharges.
As shown in Figure 6, guiding valve 2 is positioned at meta, and high pressure filler opening 101 and return opening 102 are closed.Low pressure oil sources flow to oil outlet 104 and flows out to final controlling element through throttling groove 202 from low pressure filler opening 103, and final controlling element is operated in packing state.
As shown in Figure 7, guiding valve 2 is positioned at the second place, and high pressure filler opening 101 and low pressure filler opening 103 are closed, and oil outlet 104 is communicated with return opening 102 by throttling groove 202, and final controlling element discharges.
As shown in Figure 8, guiding valve 2 is positioned at the 3rd position, and return opening 102 and low pressure filler opening 103 are closed, and high pressure fuel source flows into oil outlet 104 to final controlling element from high pressure filler opening 101, makes the powerful action of final controlling element.
As shown in Figure 3, the hydraulic oil of being exported by oil hydraulic pump 804, is divided into two-way via diverter valve 807: a road flows into accumulator 801 and high pressure filler opening 101, and another road flows into low pressure filler opening 103 through reduction valve 802.
After solenoid valve 3 power-off, hydraulic oil in the spool chamber at the first spring 701 places enters the drainback passage 106 of solenoid valve 3 by solenoid valve oil outlet 301, and flow out to hydraulic oil tank 803 by the return opening 102 being connected with drainback passage 106, spring force discharges, because solenoid valve 3 damping holes 1061 have damping function, guiding valve 2 is resetted gently, now the throttling groove 202 of guiding valve 2 is communicated with low pressure filler opening 103, and the sluggishness of throttling groove 202 and throttling action are braked brake actuator 805 gently in addition.
When the powerful action of needs, use operating handle 5 to promote the second spring 702 and guiding valve 2 interlocks, high pressure filler opening 101 and oil outlet 104 are communicated with by circular groove 201, low pressure filler opening 103 and return opening 102 are closed, the powerful action of brake actuator 805.
As shown in Figure 4, after vehicle launch, the hydraulic oil by the second oil hydraulic pump 902 outputs, is divided into two-way via the second diverter valve 909: a road flows into the second accumulator 904 and high pressure filler opening 101, and another road second reduction valve 903 flows into low pressure filler opening 103.
After solenoid valve 3 power-off, hydraulic oil in the spool chamber at the first spring 701 places enters the drainback passage 106 of solenoid valve 3 by solenoid valve oil outlet 301, and flow out to the second hydraulic oil tank 901 by the return opening 102 being connected with drainback passage 106, spring force discharges, because solenoid valve 3 damping holes 1061 have damping function, guiding valve 2 is resetted gently, now the throttling groove 202 of guiding valve 2 is communicated with low pressure filler opening 103, and the sluggishness of throttling groove 202 and throttling action are braked the second brake actuator 905 gently in addition.
When the powerful action of needs, use operating handle 5 to promote the second spring 702 and guiding valve 2 interlocks, high pressure filler opening 101 and oil outlet 104 are communicated with by circular groove 201, low pressure filler opening 103 and return opening 102 are closed, the powerful action of the second brake actuator 905.
When the second accelerating controller 907 is opened, the second Idle Switch 914 powers on to solenoid valve 3, now motor is under high idle speed state, solenoid valve 3 actions, under the acting in conjunction of low pressure oil sources and the first spring 701, make guiding valve 2 produce fast offset, hydraulic oil flows back to the second hydraulic oil tank 901, the second brake actuators 905 via oil outlet 104 and discharges, and vehicle is waited to travel.
When according to operating mode needs, when vehicle will slow down or stop, only need close the second accelerating controller 907, solenoid valve 3 power-off, guiding valve 2 is got back to meta state, and hydraulic oil enters final controlling element by oil outlet 104, vehicle flexible braking.
While travelling on ramp, according to operating mode needs, while making vehicle stop operation, as long as close the second accelerating controller 907, solenoid valve 3 power-off, guiding valve 2 is got back to meta, both produced pressurize braking, even if now do not use stopping brake, or open slew case power, vehicle can be in original place parking, and the moment of recovering to travel can not slipped car phenomenon yet.
Because the power source of braking oil sources and hydraulic system is with going out a place, both can in system, use special-purpose brake pump, also can preferentially shunt by hydraulic system, compatible strong.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvement, these improvement also should be considered as protection domain of the present utility model.
Claims (9)
1. a three-position four-way valve, comprise drive unit, in be provided with the valve body (1) of spool chamber and be positioned at described spool chamber and the guiding valve of described spool chamber adaptation (2), it is characterized in that: on described valve body (1), be provided with high pressure filler opening (101), return opening (102), low pressure filler opening (103) and oil outlet (104); On described guiding valve (2), have circular groove (201) and throttling groove (202),
Described guiding valve (2) can lay respectively at meta, the second place and the 3rd position under the driving of described drive unit;
When described guiding valve (2) is positioned at meta, described low pressure filler opening (103) is communicated with described oil outlet (104) by described throttling groove (202);
When described guiding valve (2) is positioned at the second place, described return opening (102) is communicated with described oil outlet (104) by described throttling groove (202);
When described guiding valve (2) is positioned at the 3rd position, described high pressure filler opening (101) is communicated with described oil outlet (104) by described circular groove (201).
2. three-position four-way valve according to claim 1, is characterized in that: in described valve body (1), be respectively arranged with the leader channel (105) being communicated with described low pressure filler opening (103) and the drainback passage (106) being communicated with described return opening (102); Described drive unit comprises solenoid valve (3) and operating handle (5), described solenoid valve (3) is communicated with described spool chamber, and described leader channel (105) and drainback passage (106) are communicated with described solenoid valve (3) in described valve body (1); The joint of described solenoid valve (3) and described spool chamber is positioned on the chamber wall of the spool chamber of throttling groove (202) side of described guiding valve (2); The spool chamber that is positioned at circular groove (201) side of the described guiding valve of adjacency (2) is provided with piston (4), described piston (4) adapts and can slide along spool chamber wall with spool chamber, one side of described piston (4) is fixed with push rod (6), and the opposite side of described piston (4) is provided with operating handle (5); In described spool chamber, throttling groove (202) side of described guiding valve (2) with at the bottom of described spool chamber chamber between be provided with the first spring (701), described spool chamber is interior, be provided with the second spring (702) between described push rod (6) and circular groove (201) side of guiding valve (2).
3. three-position four-way valve according to claim 1, it is characterized in that: described guiding valve (2) is provided with conical section, described conical section partly without leave nearly described circular groove (201) one end to increasing gradually away from described circular groove (201) one end, between described conical section and described valve body (1) inwall, be formed with described throttling groove (202).
4. three-position four-way valve according to claim 2, it is characterized in that: described drainback passage (106) is also communicated with described spool chamber, the joint of described drainback passage and spool chamber is positioned on the chamber wall of the spool chamber of circular groove (201) side of described guiding valve (2).
5. three-position four-way valve according to claim 2, is characterized in that: described drainback passage (106) itself and described return opening (102) connectivity part and and solenoid valve (3) connectivity part between be provided with damping hole (1061).
6. a braking system, it is characterized in that: comprise hydraulic oil tank (803), oil hydraulic pump (804), reduction valve (802), accumulator (801), three-position four-way valve in brake actuator (805) and claim 1 to 5 described in any one, described hydraulic oil tank (803) is communicated with the high pressure filler opening (101) of described three-position four-way valve through described oil hydraulic pump (804) respectively, through described oil hydraulic pump (804), be communicated with described accumulator (801), through described oil hydraulic pump (804) and reduction valve (802), be communicated with the low pressure filler opening (103) of described three-position four-way valve, described accumulator (801) is communicated with the high pressure filler opening (101) of described three-position four-way valve again, described brake actuator (805) is communicated with the oil outlet (104) of described three-position four-way valve, the return opening of described three-position four-way valve (102) is communicated with described hydraulic oil tank (803).
7. braking system according to claim 6, it is characterized in that: also comprise diverter valve (807), one-way valve (808), oil suction filter core (809) and oil return filter core (810), the input end of described diverter valve (807) is communicated with described oil hydraulic pump (804), the output terminal of described diverter valve (807) is communicated with described hydraulic oil tank (803) through described oil return filter core (810) respectively, through described reduction valve (802), be communicated with the low pressure filler opening (103) of described three-position four-way valve, through described one-way valve (808), be communicated with described accumulator (801), through described one-way valve (808), be communicated with the high pressure filler opening (101) of described three-position four-way valve, described oil suction filter core (809) is arranged between described oil hydraulic pump (804) and described hydraulic oil tank (803).
8. a braking system, it is characterized in that: comprise the second hydraulic oil tank (901), the second oil hydraulic pump (902), the second reduction valve (903), the second accumulator (904), the second brake actuator (905), the second braking maneuver device (906), the second accelerating controller (907), three-position four-way valve in the second Idle Switch (914) and claim 1 to 5 described in any one, described the second hydraulic oil tank (901) is communicated with the high pressure filler opening (101) of described three-position four-way valve through described the second oil hydraulic pump (902) respectively, through described the second oil hydraulic pump (902), be communicated with described the second accumulator (904), through described the second oil hydraulic pump (902) and the second reduction valve (903), be communicated with the low pressure filler opening (103) of described three-position four-way valve, described the second accumulator (904) is communicated with the high pressure filler opening (101) of described three-position four-way valve again, described the second brake actuator (905) is communicated with the oil outlet (104) of described three-position four-way valve, the return opening of described three-position four-way valve (102) is communicated with described the second hydraulic oil tank (901), described the second braking maneuver device (906) is communicated with the operating handle (5) of described three-position four-way valve, described the second accelerating controller (907) is communicated with the solenoid valve (3) of described three-position four-way valve by described the second Idle Switch (914).
9. braking system according to claim 8, it is characterized in that: also comprise the second diverter valve (909), the second one-way valve (910), the second oil suction filter core (911), the second oil return filter core (912) and second is concentrated return tube (913), the input end of described the second diverter valve (909) is communicated with described the second oil hydraulic pump (902), the output terminal of described the second diverter valve (909) concentrates return tube (913) and the second oil return filter core (912) to be communicated with described the second hydraulic oil tank (901) through described second respectively, through described the second reduction valve (903), be communicated with the low pressure filler opening (103) of described three-position four-way valve, through described the second one-way valve (910), be communicated with described the second accumulator (904), through described the second one-way valve (910), be communicated with the high pressure filler opening (101) of described three-position four-way valve, described the second oil suction filter core (911) is arranged between described the second oil hydraulic pump (902) and described the second hydraulic oil tank (901).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320378333.9U CN203477448U (en) | 2013-06-27 | 2013-06-27 | Three-position four-way valve and brake system with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320378333.9U CN203477448U (en) | 2013-06-27 | 2013-06-27 | Three-position four-way valve and brake system with same |
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| CN203477448U true CN203477448U (en) | 2014-03-12 |
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| CN201320378333.9U Withdrawn - After Issue CN203477448U (en) | 2013-06-27 | 2013-06-27 | Three-position four-way valve and brake system with same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291958A (en) * | 2013-06-27 | 2013-09-11 | 牛庆祥 | Three-position four-way valve and braking system with same |
| CN105443845A (en) * | 2015-12-28 | 2016-03-30 | 镇江常青园林工程有限公司 | Braking system used for jet-irrigating machine |
| CN106286897A (en) * | 2015-06-08 | 2017-01-04 | 浙江盾安禾田金属有限公司 | Four-way change-over valve and heat-exchange apparatus |
| CN114030453A (en) * | 2022-01-06 | 2022-02-11 | 北京航空航天大学宁波创新研究院 | Integrated valve block and brake device |
-
2013
- 2013-06-27 CN CN201320378333.9U patent/CN203477448U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291958A (en) * | 2013-06-27 | 2013-09-11 | 牛庆祥 | Three-position four-way valve and braking system with same |
| CN103291958B (en) * | 2013-06-27 | 2015-08-05 | 牛庆祥 | Three-position four-way valve and there is the braking system of this three-position four-way valve |
| CN106286897A (en) * | 2015-06-08 | 2017-01-04 | 浙江盾安禾田金属有限公司 | Four-way change-over valve and heat-exchange apparatus |
| CN105443845A (en) * | 2015-12-28 | 2016-03-30 | 镇江常青园林工程有限公司 | Braking system used for jet-irrigating machine |
| CN105443845B (en) * | 2015-12-28 | 2018-01-16 | 镇江常青园林工程有限公司 | A kind of brakes for irrigation sprinkler |
| CN114030453A (en) * | 2022-01-06 | 2022-02-11 | 北京航空航天大学宁波创新研究院 | Integrated valve block and brake device |
| CN114030453B (en) * | 2022-01-06 | 2022-03-22 | 北京航空航天大学宁波创新研究院 | Integrated valve block and brake device |
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