CN204284291U - The pivotal hydraulic bjuffer of vehicle safety is realized based on articulated system - Google Patents
The pivotal hydraulic bjuffer of vehicle safety is realized based on articulated system Download PDFInfo
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- CN204284291U CN204284291U CN201420663769.7U CN201420663769U CN204284291U CN 204284291 U CN204284291 U CN 204284291U CN 201420663769 U CN201420663769 U CN 201420663769U CN 204284291 U CN204284291 U CN 204284291U
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Abstract
The utility model relates to one and realizes the pivotal hydraulic bjuffer of vehicle safety based on articulated system, composes in parallel hinged damping pressure oil circuit control comprising basic damping oil circuit and pressurization control oil circuit; Oil return circuit is provided with between hinged damping pressure oil circuit control and fuel reserve tank; Second oil suction line is arranged between fuel reserve tank and rod chamber; Safe lock oil circuit is arranged between rod chamber and oil return circuit; Commutation assembly is arranged in the second force feed oil circuit.Adopt and of the present utility modelly realize the pivotal hydraulic bjuffer of vehicle safety based on articulated system, make vehicle can light fast rotation, avoid occurring that rear whipping ajusted by trailer phenomenon and vehicle during revolution, simultaneously when vehicle has an accident, shape when vehicle maintenance accident is occurred, avoid occurring larger harm, there is application area widely.
Description
Technical field
The utility model relates to articulated coach technical field, specifically refers to that one realizes the pivotal hydraulic bjuffer of vehicle safety based on articulated system.
Background technique
Articulated vehicle is generally made up of two joint compartments, front compartment is connected by chassis hinging system with trunk, chassis hinging system comprises side arm, after-frame, turntable bearing and the hydraulic bjuffer that damping is provided, side arm is fixedly connected with front compartment by front cross beam, after-frame is fixedly connected with trunk by rear cross beam, about hydraulic bjuffer, each one is connected between articulated system side arm and after-frame, when vehicle is turned under steam, front truck and rear car drive the side arm of articulated system and after-frame to relatively rotate, proximity switch can be triggered in rotation process, be connected between articulated system side arm and after-frame, and be connected with car load automatical control system.
In prior art, handing-over vehicle damping torque in turning and revolution two states is identical, easily causes vehicle cart and the phenomenon to opposite direction inertia whipping.
Model utility content
The purpose of this utility model is the shortcoming overcoming above-mentioned prior art, provide in a kind of turn inside diameter process and increase damping torque according to the angle of vehicle or the increase of the speed of a motor vehicle, in vehicle turning course, according to vehicle angles or speed diminish increase damping torque gradually realize the pivotal hydraulic bjuffer of vehicle safety based on articulated system.
To achieve these goals, of the present utility modelly realize the pivotal hydraulic bjuffer of vehicle safety based on articulated system there is following formation:
The pivotal hydraulic bjuffer of vehicle safety should be realized based on articulated system, its main feature is, described hydraulic bjuffer comprises piston assembly, cylinder assembly and fuel reserve tank, described piston assembly is arranged in described cylinder assembly, and corresponding cylinder barrel is divided into rod chamber and rodless cavity by described piston assembly, it is characterized in that, described hydraulic bjuffer also comprises hydraulic control oil circuit, described cylinder assembly, described hydraulic control oil circuit and described fuel reserve tank are fixedly connected sequentially, and described hydraulic control oil circuit comprises the first oil suction line, second oil suction line, first force feed oil circuit, second force feed oil circuit, basis damping oil circuit, strengthen damping oil circuit, safe lock oil circuit and commutation assembly, wherein:
Described basic damping oil circuit and pressurization control oil circuit compose in parallel hinged damping pressure oil circuit control;
The first described oil suction line is arranged between described fuel reserve tank and described rodless cavity;
The second described oil suction line is arranged between described fuel reserve tank and described rod chamber;
The first described force feed oil circuit is arranged between described rodless cavity and described hinged damping pressure oil circuit control;
The second described force feed oil circuit is arranged between described rod chamber and described hinged damping pressure oil circuit control;
Oil return circuit is provided with between described hinged damping pressure oil circuit control and described fuel reserve tank;
Described safe lock oil circuit is arranged between described rod chamber and described oil return circuit;
Described commutation assembly is arranged in the second described force feed oil circuit.
Further, described commutation assembly is mechanical valve, and described mechanical valve is arranged on described piston assembly.
Further, described piston assembly comprises piston and piston rod, described mechanical valve comprises mechanical valve spring and mechanical valve baffle plate, the first end of described mechanical valve spring is fixed on described piston, second end of described mechanical valve spring is connected with described mechanical valve baffle plate, and described mechanical valve spring and mechanical valve baffle plate are all sheathed on described piston rod.
Further, described cylinder assembly comprises integrated package, described hinged damping pressure oil circuit control, the second oil suction line, the second force feed oil circuit and safe lock oil circuit are integrated in described integrated package, described integrated package was also provided with oil groove and the hinged filler opening of rod chamber, and described crossing in oil groove offers safe lock filler opening and the second oil suction filler opening.
Further, the first described oil suction line comprises the first one-way valve, and the second described oil suction line comprises the 4th one-way valve, and the first described force feed oil circuit comprises the second one-way valve, and the second described force feed oil circuit comprises the 3rd one-way valve.
Further, described commutation assembly is solenoid valve, and described solenoid valve is arranged between the 3rd described one-way valve and described hinged damping pressure oil circuit control.
Further, described basic damping oil circuit comprises basic hydraulic damping and basic solenoid valve, and described pressurization control oil circuit comprises enhancing relief valve or strengthens hydraulic damping, and described safe lock oil circuit comprises safety overflow valve.
Further, described articulated system comprises proximity switch, side arm and after-frame, described proximity switch is arranged between described side arm and described after-frame, and described proximity switch is connected with the car load automatical control system of described articulated vehicle, the trigger signal that described car load automatical control system is used for sending according to described proximity switch sends basic electromagnetic valve instruction to described articulated system.
Have employed and realize the pivotal hydraulic bjuffer of vehicle safety based on articulated system in the utility model, when in turn inside diameter process, according to the needs of vehicle to buffer damping, with angle or the speed of a motor vehicle increase and increase damping torque, ensure that driving there will not be whipping phenomenon; After turn inside diameter, need to be turned back in the process of craspedodrome, increase damping torque gradually with diminishing of angle conversely, make vehicle can light fast rotation, avoid vehicle after turning, during revolution, occur trailer phenomenon, and rear whipping ajusted by vehicle; Simultaneously when vehicle has an accident, shape when vehicle maintenance accident is occurred, avoids occurring larger harm, comparatively prior art contrast, safer, obtains more comfortable impression of driving.
In addition, when piston rod in the rod chamber of hydraulic bjuffer stretches out and reaches given length, the hinged filler opening of rod chamber on mechanical valve baffle plate blocking integrated package, hydraulic oil can pass through oil groove and enter into safe lock filler opening and the second inlet port filler opening, so when turn inside diameter reaches several angle, rod chamber is provided damping force by the hydraulic bjuffer compressed by safe lock oil circuit.
Meanwhile, it is normality that hinged damping pressure oil circuit control adopts with hydraulic damping, and relief valve is pressurized state, but not relief valve is normality, and hydraulic damping is pressurized state.Such configuration takes full advantage of pressure reduction that hydraulic damping produces and the characteristic that the inflow-rate of water turbine of hydraulic oil is directly proportional, and namely under normal conditions, hinged damping and turn inside diameter angular velocity are directly proportional; When needing in less angle of swing to strengthen damping, damping pressure is increased to the numerical value of a higher relative constancy, therefore, hydraulic damping and relief valve is used to obtain damping pressure, but not adoption rate relief valve (or proportional pressure-reducing valve) obtains damping pressure, reduce the manufacture cost of hydraulic bjuffer and the complexity of electrical control.In addition, hinged damping pressure oil circuit control adopts the form of relief valve and hydraulic damping parallel connection.Relief valve and hydraulic damping parallel connection, when oil circuit produces hydraulic shock, when pressure increases instantaneously, relief valve can open pressure release, reduces compression shock, reduces hydraulic damping temporary over-current amount simultaneously and produces noise too greatly.
Accompanying drawing explanation
Fig. 1 is the structural drawing realizing the pivotal hydraulic bjuffer of vehicle safety based on articulated system of the present utility model.
Fig. 2 is the structural drawing realizing the first hydraulic control oil circuit of the pivotal hydraulic bjuffer of vehicle safety based on articulated system of the present utility model.
Fig. 3 of the present utility modelly realizes the cylinder assembly of the pivotal hydraulic bjuffer of vehicle safety and the structural drawing of piston assembly based on articulated system.
Fig. 4 is the structural drawing realizing the second hydraulic control oil circuit of the pivotal hydraulic bjuffer of vehicle safety based on articulated system of the present utility model.
Fig. 5 is the structural drawing realizing the third hydraulic control oil circuit of the pivotal hydraulic bjuffer of vehicle safety based on articulated system of the present utility model.
Fig. 6 is the structural drawing realizing the mechanical valve of the pivotal hydraulic bjuffer of vehicle safety based on articulated system of the present utility model.
Fig. 7 is the structural drawing realizing the integrated package of the pivotal hydraulic bjuffer of vehicle safety based on articulated system of the present utility model.
Fig. 8 is the overall structure figure realizing the pivotal hydraulic bjuffer of vehicle safety based on articulated system of the present utility model.
Wherein:
1 side arm
2 after-frames
3 cylinder assemblies
31 cylinder barrels
32 rear end covers
33 withhold pipe
34 integrated packages
341 cross oil groove
The hinged filler opening of 342 rod chamber
343 safe lock filler openings
345 second oil suction filler openings
35 outer tubes
36 flush end Cock screws
4 piston assemblys
41 pistons
42 piston rods
43 rod chambers
The rod chamber of the left hydraulic bjuffer of 43a
The rod chamber of the right hydraulic bjuffer of 43b
44 rodless cavities
The rodless cavity of the left hydraulic bjuffer of 44a
The rodless cavity of the right hydraulic bjuffer of 44b
5 fuel reserve tanks
The fuel reserve tank of the left hydraulic bjuffer of 5a
The fuel reserve tank of the right hydraulic bjuffer of 5b
61 first one-way valves
First one-way valve of the left hydraulic bjuffer of 61a
First one-way valve of the right hydraulic bjuffer of 61b
62 second one-way valves
Second one-way valve of the left hydraulic bjuffer of 62a
Second one-way valve of the right hydraulic bjuffer of 62b
63 the 3rd one-way valves
3rd one-way valve of the left hydraulic bjuffer of 63a
3rd one-way valve of the right hydraulic bjuffer of 63b
64 the 4th one-way valves
4th one-way valve of the left hydraulic bjuffer of 64a
4th one-way valve of the right hydraulic bjuffer of 64b
71 safety overflow valves
The safety overflow valve of the left hydraulic bjuffer of 71a
The safety overflow valve of the right hydraulic bjuffer of 71b
72 strengthen relief valve
The enhancing relief valve of the left hydraulic bjuffer of 72a
The enhancing relief valve of the right hydraulic bjuffer of 72b
72 ' strengthens hydraulic damping
73 basic solenoid valves
The basic solenoid valve of the left hydraulic bjuffer of 73a
The basic solenoid valve of the right hydraulic bjuffer of 73b
74 basic hydraulic dampings
The basic hydraulic damping of the left hydraulic bjuffer of 74a
The basic hydraulic damping of the right hydraulic bjuffer of 74b
75 mechanical valve
The mechanical valve of the left hydraulic bjuffer of 75a
The mechanical valve of the right hydraulic bjuffer of 75b
751 mechanical valve springs
752 mechanical valve baffle plates
75 ' solenoid valve
8 left hydraulic bjuffers
9 right hydraulic bjuffers
Embodiment
In order to more clearly describe technology contents of the present utility model, conduct further description below in conjunction with specific embodiment.
In a kind of mode of execution of the present utility model, as shown in Figure 1, between the side arm 1 of articulated system and after-frame 2, left and right is each connects a cascade damping buffer, each cascade damping buffer comprises hydraulic control oil circuit, cylinder assembly 3, piston assembly 4 and fuel reserve tank 5, wherein, hydraulic control oil circuit, cylinder assembly 3 are fixedly connected with fuel reserve tank 5, and are connected with the after-frame 2 of articulated system again; Piston assembly 4 is connected with the side arm 1 of articulated system, and piston assembly 4 is arranged in cylinder assembly 3, and can slide in cylinder assembly 3.
1) constituent elements of hydraulic control oil circuit
As shown in Figure 2, be the structural representation of hydraulic control oil circuit, hydraulic control oil circuit is by the first one-way valve 61, second one-way valve 62,3rd one-way valve the 63, four one-way valve 64, (commutation assembly can be mechanical valve 75 or solenoid valve 75 ' to commutation assembly, Fig. 2 is mechanical valve 75), basis solenoid valve 73, safety overflow valve 71, strengthens relief valve 72 and (also can be and strengthen hydraulic damping 72 ', Fig. 2 for strengthen relief valve 72) and basic hydraulic damping 74 form, wherein:
First one-way valve 61 is arranged between the rodless cavity 44 of fuel reserve tank 5 and cylinder barrel 31, as the first oil suction line; 4th one-way valve 64 is arranged between the rod chamber 43 of cylinder barrel 31 and fuel reserve tank 5, as the second oil suction line; Second one-way valve 62 is arranged between the rodless cavity 44 of cylinder barrel 31 and Stress control oil circuit, as the first force feed oil circuit; 3rd one-way valve 63 is arranged between the rod chamber 43 of cylinder barrel 31 and Stress control oil circuit, as the second force feed oil circuit; Basis solenoid valve 73, strengthens relief valve 72 and basic hydraulic damping 74 forms hinged damping pressure oil circuit control; Oil circuit between hinged damping pressure oil circuit control and fuel reserve tank 5 is as oil return circuit; Safety overflow valve 71 is arranged between rod chamber 43 and oil return circuit, as safe lock oil circuit; Commutation assembly is arranged in the second force feed oil circuit.
In addition, in the preferred mode of execution of one, the concrete structure of above-mentioned mechanical valve 75 as shown in Figure 6, this mechanical valve 75 comprises mechanical valve spring 751 and mechanical valve baffle plate 752, the first end of mechanical valve spring 751 is fixed on piston 41, second end of mechanical valve spring 751 is connected with mechanical valve baffle plate 752, and mechanical valve spring 751 and mechanical valve baffle plate 752 are all sheathed on piston rod 42.
Below specifically form situation for each oil circuit:
1. the first one-way valve 61 is arranged between fuel reserve tank 5 and rodless cavity 44, as the first oil suction line;
2. the 4th one-way valve 64 is arranged between fuel reserve tank 5 and rod chamber 43, as the second oil suction line;
3. the second one-way valve 62 is arranged between rodless cavity 44 and hinged damping pressure oil circuit control, as the first force feed oil circuit;
4. the 3rd one-way valve 63 is arranged between rod chamber 43 and hinged damping pressure oil circuit control, as the second force feed oil circuit;
5. basic hydraulic damping 74 and basic solenoid valve 73 are connected, and form basic damping oil circuit;
6. strengthening relief valve 72 is set in higher than basic hydraulic damping 74 under normal circumstances, and the cracking pressure lower than safety overflow valve 71 is as enhancing damping oil circuit;
7., after basic damping oil circuit and the parallel connection of pressurization control oil circuit, hinged damping pressure oil circuit control is formed;
8. safety overflow valve 71 sets relatively high cracking pressure and is connected between rod chamber 43 and oil return circuit, as safe lock oil circuit.
In addition, as shown in Figure 4, strengthen relief valve 72 can be enhanced hydraulic damping 72 ' substitute; As shown in Figure 5, for commutation assembly is the structural representation of solenoid valve 75 '.
2) constituent elements of cylinder assembly 3
As shown in Figure 3, cylinder assembly 3 comprises welding three linked piece, cylinder barrel 31, rear end cover 32, withholds pipe 33 and relevant cylinder barrel Sealing.
Wherein, welding three linked piece is welded successively by integrated package 34, outer tube 25 and flange, all components and parts of Stress control oil circuit, in the integrated integrated package 34 being arranged on welding three linked piece; Cylinder barrel 31 arranges and is arranged in welding three linked piece, coordinates and contacts, form one end sealing by cylinder barrel Sealing with the integrated package 34 in welding three linked piece; Rear end cover 32 arranges the other end being arranged on cylinder barrel 31 and welding three linked piece, by cylinder barrel Sealing sealing cylinder barrel 31 and the other end welding three linked piece; The integrated package 34 of welding three linked piece is provided with flush end Cock screw 36, compresses the cylinder barrel 31 in welding three linked piece, avoid cylinder barrel 31 to move axially between integrated package 34 and rear end cover 32; Withhold pipe 33 setting to be arranged between the integrated package 34 of rear end cover 32 and welding three linked piece, realize the connection between the Stress control oil circuit in the first force feed oil circuit and integrated package 34; The annular seal zones that cylinder barrel 31 and welding three connect between outer tube 25 forms fuel reserve tank 5.
In addition, as shown in Figure 7, when the assembly that commutates is mechanical valve 75, integrated package 34 was also provided with oil groove 341 and the hinged filler opening 342 of rod chamber, crossed in oil groove 341 and offered safe lock filler opening 343 and the second oil suction filler opening 345.
3) constituent elements of piston assembly 4
As shown in Figure 3, piston assembly 4 comprises piston 41, piston rod 42 and associated piston shaft seal.
Wherein, piston 41 arranges and is arranged in cylinder barrel 31, by piston rod 42 Sealing, cylinder barrel 31 is divided into two cavity volumes; Piston rod 42 is connected with the piston 41 being positioned at cylinder bucket through the integrated package 34 in welding three linked piece; Due in two cavity volumes that cylinder barrel 31 is separated by piston 41, claim the cavity volume having piston rod 42 to pass to be rod chamber 43, the cavity volume not having piston rod 42 to pass is rodless cavity 44.
Composition graphs 1 to Fig. 8, conducts further description:
After vehicle launch, basic solenoid valve obtains electric, and for vehicle right-hand bend, drive side arm and after-frame to relatively rotate between front truck and rear car, the piston assembly of left hydraulic bjuffer rotates with side arm, slides stretch out in cylinder barrel to rod chamber; The piston assembly of right hydraulic bjuffer rotates with side arm, to rodless cavity slip indentation in cylinder barrel.
Now, for left hydraulic bjuffer, the cavity volume volume-diminished of rod chamber, the hydraulic oil in compression rod chamber, through the second oil extraction oil circuit, flows to hinged damping pressure oil circuit control and carries out Stress control, produces force value, then to fail to be convened for lack of a quorum fuel reserve tank through oil return circuit; The pressure that rod chamber produces acts on piston, alleviate the trend that piston slides to rod chamber, namely alleviate the dextrorotary trend of articulated system, namely alleviate the trend that vehicle is turned right, in the process, when angle of turn is between 0 ° ~ 48 °, basis solenoid valve obtains electric, and be in connected state, hinged damping pressure is produced by basic hydraulic damping, produce damping pressure numerical value and be directly proportional by the hydraulic fluid flow rate of hydraulic damping, the linear velocity of namely stretching out with piston rod is directly proportional; When angle of turn reaches between 48 ° ~ 51 °, proximity switch triggers, and car load automatical control system sends signal, makes basic solenoid valve power-off, is in closed condition, and hinged damping pressure produces by strengthening relief valve, produces substantially invariable damping pressure numerical value; When angle of turn reaches between 51 ° ~ 54 °, basic solenoid valve keeps power-off, and mechanical valve slides into integrated package end with piston simultaneously, the filler opening of the hinged damping pressure oil circuit control of blocking rod chamber, and rod chamber sets safe lock pressure by safety overflow valve; When piston slides to rod chamber in cylinder barrel, the cavity volume volume of rodless cavity increases, and after producing negative pressure, by the first oil suction loop from fuel reserve tank oil suction, keeps being full of hydraulic oil in cavity volume.
For right hydraulic bjuffer, when angle of turn is between 0 ° ~ 38.6 °, piston rod indentation, basis solenoid valve obtains and is electricly in connected state, hinged damping pressure is produced by hydraulic damping, produce damping pressure numerical value and be directly proportional by the hydraulic fluid flow rate of basic hydraulic damping, be namely directly proportional with the linear velocity of piston rod indentation; Angle of turn is 38.6 ° time, and the axis of piston rod is through the rotating center of articulated system side arm and after-frame, and piston rod is reduced to the shortest position, and now the damping force of right hydraulic bjuffer and the arm of force are 0; When angle of turn is between 38.6 ° ~ 48 °, basic solenoid valve obtains and is electricly in connected state, and right hydraulic bjuffer piston rod stretches out, and hinged damping pressure is produced by basic hydraulic damping; When angle of turn reaches between 48 ° ~ 51 °, proximity switch triggers, and car load automatical control system sends signal, makes basic solenoid valve power-off, is in closed condition, and hinged damping pressure produces by strengthening relief valve, produces substantially invariable damping pressure numerical value; When angle of turn reaches between 51 ° ~ 54 °, keep trigger state close to quick closing valve, basic solenoid valve continues dead electricity, is in closed condition, and the hinged damping pressure of right hydraulic bjuffer produces by strengthening relief valve, provides enhancing damping.In addition, when Vehicle Speed reach 60km/ hour, driver step on brake or driver press urgent switching push button time, car load automatical control system receives corresponding speed of a motor vehicle upper limit trigger signal, brake signal or urgent switching push button trigger signal, and send signal to the hydraulic bjuffer of articulated system, basis solenoid valve dead electricity, hydraulic bjuffer is in enhancing damping state.
In vehicle right-hand rotation process, left and right hydraulic bjuffer provides buffer damping power, the damping torque that articulated system acquisition is contrary with turn inside diameter direction for articulated system, alleviates the trend of turn inside diameter with this.Ackermann steer angle, the left and right hydraulic bjuffer of articulated system is in all corresponding arm of force value of any position, because of angle of turn be 38.6 ° time, wherein a hydraulic bjuffer is reduced to the shortest, total arm of force of hydraulic bjuffer successively decreases between 0 ° ~ 38.6 °, and along with the increase of turn inside diameter angle, needs the damping torque provided also to increase, by strengthening damping and safe lock, reach the object increasing damping torque.
Vehicle is when right-hand rotation end starts to turn round, and vehicle returns back to craspedodrome state gradually by real-time angle of turn.
Now, contrary when right left hydraulic bjuffer motion state and turning, when angle of turn turns round between 0 ° ~ 38.6 °, articulated system provides basic damping by left hydraulic bjuffer indentation, and right hydraulic bjuffer stretches out provides basic damping; When angle of turn turns round between 38.6 ° ~ 48 °, left hydraulic bjuffer indentation provides basic damping, and right hydraulic bjuffer also indentation provides basic damping; When angle of turn turns round between 48 ° ~ 51 °, left hydraulic bjuffer indentation, provides basic damping, and right hydraulic bjuffer also indentation provides basic damping; When angle of turn turns round between 51 ° ~ 54 °, left hydraulic bjuffer indentation, provides basic damping, and the also indentation of right hydraulic bjuffer, provides basic damping.
Vehicle turns round after turning, and hydraulic bjuffer all merely provides basic damping, and unlike turning time damping force is strengthened, be in order to make vehicle can light fast rotation to craspedodrome state, avoid occurring the danger such as trailer.When it is pointed out that angle of turn turns round between 0 ° ~ 48 °, car load automatical control system remains the basic solenoid valve of hydraulic bjuffer, and hydraulic bjuffer provides basic damping; And the situation of turn inside diameter angle more than 48 °, only just can there will be when vehicle backing, as car load automatical control system receive proximity switch trigger signal and astern signal simultaneously time, car load automatical control system sends signal, the basic solenoid valve dead electricity of hydraulic bjuffer; If car load automatical control system only receives proximity switch trigger signal when not receiving astern signal, make hydraulic bjuffer basis solenoid valve keep electric, reach the object of light fast rotation like this.
When vehicle produces fault, during the power-off of car load automatical control system, hydraulic bjuffer provides enhancing damping, makes vehicle safety traffic can go back to repair shop; When vehicle has an accident, during automatical control system power-off, articulated system is in enhancing damping state, and shape when vehicle maintenance accident is occurred, avoids occurring larger harm.
When vehicle turns left, left hydraulic bjuffer indentation, right hydraulic bjuffer stretches out, and is also same working principle.
Should be understood that the angle (as " 0 ~ 48 ° ", " 51 ° ") in foregoing can be other angular values and be not only special angle numerical value.
Have employed and realize the pivotal hydraulic bjuffer of vehicle safety based on articulated system in the utility model, when in turn inside diameter process, according to the needs of vehicle to buffer damping, with angle or the speed of a motor vehicle increase and increase damping torque, ensure that driving there will not be whipping phenomenon; After turn inside diameter, need to be turned back in the process of craspedodrome, increase damping torque gradually with diminishing of angle conversely, make vehicle can light fast rotation, avoid vehicle after turning, during revolution, occur trailer phenomenon, and rear whipping ajusted by vehicle; Simultaneously when vehicle has an accident, shape when vehicle maintenance accident is occurred, avoids occurring larger harm, comparatively prior art contrast, safer, obtains more comfortable impression of driving.
In addition, when piston rod in the rod chamber of hydraulic bjuffer stretches out and reaches given length, the hinged filler opening of rod chamber on mechanical valve baffle plate blocking integrated package, hydraulic oil can enter into safe lock filler opening and the second inlet port filler opening by oil groove, so when turn inside diameter reaches several angle, rod chamber is provided damping force by the hydraulic bjuffer compressed by safe lock oil circuit.
Meanwhile, it is normality that hinged damping pressure oil circuit control adopts with hydraulic damping, and relief valve is pressurized state, but not relief valve is normality, and hydraulic damping is pressurized state.Such configuration takes full advantage of pressure reduction that hydraulic damping produces and the characteristic that the inflow-rate of water turbine of hydraulic oil is directly proportional, and namely under normal conditions, hinged damping and turn inside diameter angular velocity are directly proportional; When needing in less angle of swing to strengthen damping, damping pressure is increased to the numerical value of a higher relative constancy, therefore, hydraulic damping and relief valve is used to obtain damping pressure, but not adoption rate relief valve (or proportional pressure-reducing valve) obtains damping pressure, reduce the manufacture cost of hydraulic bjuffer and the complexity of electrical control.In addition, hinged damping pressure oil circuit control adopts the form of relief valve and hydraulic damping parallel connection.Relief valve and hydraulic damping parallel connection, when oil circuit produces hydraulic shock, when pressure increases instantaneously, relief valve can open pressure release, reduces compression shock, reduces hydraulic damping temporary over-current amount simultaneously and produces noise too greatly.
In this description, the utility model is described with reference to its specific embodiment.But, still can make various amendment and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (8)
1. one kind realizes the pivotal hydraulic bjuffer of vehicle safety based on articulated system, described hydraulic bjuffer comprises piston assembly, cylinder assembly and fuel reserve tank, described piston assembly is arranged in described cylinder assembly, and corresponding cylinder barrel is divided into rod chamber and rodless cavity by described piston assembly, it is characterized in that, described hydraulic bjuffer also comprises hydraulic control oil circuit, described cylinder assembly, described hydraulic control oil circuit and described fuel reserve tank are fixedly connected sequentially, and described hydraulic control oil circuit comprises the first oil suction line, second oil suction line, first force feed oil circuit, second force feed oil circuit, basis damping oil circuit, strengthen damping oil circuit, safe lock oil circuit and commutation assembly, wherein:
Described basic damping oil circuit and pressurization control oil circuit compose in parallel hinged damping pressure oil circuit control;
The first described oil suction line is arranged between described fuel reserve tank and described rodless cavity;
The second described oil suction line is arranged between described fuel reserve tank and described rod chamber;
The first described force feed oil circuit is arranged between described rodless cavity and described hinged damping pressure oil circuit control;
The second described force feed oil circuit is arranged between described rod chamber and described hinged damping pressure oil circuit control;
Oil return circuit is provided with between described hinged damping pressure oil circuit control and described fuel reserve tank;
Described safe lock oil circuit is arranged between described rod chamber and described oil return circuit;
Described commutation assembly is arranged in the second described force feed oil circuit.
2. according to claim 1ly realize the pivotal hydraulic bjuffer of vehicle safety based on articulated system, it is characterized in that, described commutation assembly is mechanical valve, and described mechanical valve is arranged on described piston assembly.
3. according to claim 2ly realize the pivotal hydraulic bjuffer of vehicle safety based on articulated system, it is characterized in that, described piston assembly comprises piston and piston rod, described mechanical valve comprises mechanical valve spring and mechanical valve baffle plate, the first end of described mechanical valve spring is fixed on described piston, second end of described mechanical valve spring is connected with described mechanical valve baffle plate, and described mechanical valve spring and mechanical valve baffle plate are all sheathed on described piston rod.
4. according to claim 3ly realize the pivotal hydraulic bjuffer of vehicle safety based on articulated system, it is characterized in that, described cylinder assembly comprises integrated package, described hinged damping pressure oil circuit control, the second oil suction line, the second force feed oil circuit and safe lock oil circuit are integrated in described integrated package, described integrated package was also provided with oil groove and the hinged filler opening of rod chamber, and described crossing in oil groove offers safe lock filler opening and the second oil suction filler opening.
5. according to claim 1ly realize the pivotal hydraulic bjuffer of vehicle safety based on articulated system, it is characterized in that, the first described oil suction line comprises the first one-way valve, the second described oil suction line comprises the 4th one-way valve, the first described force feed oil circuit comprises the second one-way valve, and the second described force feed oil circuit comprises the 3rd one-way valve.
6. according to claim 5ly realize the pivotal hydraulic bjuffer of vehicle safety based on articulated system, it is characterized in that, described commutation assembly is solenoid valve, and described solenoid valve is arranged between the 3rd described one-way valve and described hinged damping pressure oil circuit control.
7. according to claim 2 or 6, realize the pivotal hydraulic bjuffer of vehicle safety based on articulated system, it is characterized in that, described basic damping oil circuit comprises basic hydraulic damping and basic solenoid valve, described pressurization control oil circuit comprises enhancing relief valve or strengthens hydraulic damping, and described safe lock oil circuit comprises safety overflow valve.
8. according to claim 7ly realize the pivotal hydraulic bjuffer of vehicle safety based on articulated system, it is characterized in that, described articulated system comprises proximity switch, side arm and after-frame, described proximity switch is arranged between described side arm and described after-frame, and described proximity switch is connected with the car load automatical control system of described vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420663769.7U CN204284291U (en) | 2014-10-16 | 2014-11-07 | The pivotal hydraulic bjuffer of vehicle safety is realized based on articulated system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420597351 | 2014-10-16 | ||
| CN2014205973510 | 2014-10-16 | ||
| CN201420663769.7U CN204284291U (en) | 2014-10-16 | 2014-11-07 | The pivotal hydraulic bjuffer of vehicle safety is realized based on articulated system |
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| CN204284291U true CN204284291U (en) | 2015-04-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104329406A (en) * | 2014-10-16 | 2015-02-04 | 伊卡路斯(苏州)车辆系统有限公司 | Hydraulic buffer device and method thereof for realizing safety turn of vehicle based on hinged system |
| CN105545829A (en) * | 2016-01-14 | 2016-05-04 | 浙江大学 | Multi-legged robot hydraulic drive unit capable of absorbing landing impact |
| WO2017107136A1 (en) * | 2015-12-24 | 2017-06-29 | 伊卡路斯(苏州)车辆系统有限公司 | Hydraulic buffering system and assembly method |
| CN112797106A (en) * | 2021-01-28 | 2021-05-14 | 长沙鑫航机轮刹车有限公司 | Brake damping device |
-
2014
- 2014-11-07 CN CN201420663769.7U patent/CN204284291U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329406A (en) * | 2014-10-16 | 2015-02-04 | 伊卡路斯(苏州)车辆系统有限公司 | Hydraulic buffer device and method thereof for realizing safety turn of vehicle based on hinged system |
| CN104329406B (en) * | 2014-10-16 | 2016-05-04 | 伊卡路斯(苏州)车辆系统有限公司 | Realize the rotating hydraulic bjuffer of vehicle safety and method thereof based on articulated system |
| WO2017107136A1 (en) * | 2015-12-24 | 2017-06-29 | 伊卡路斯(苏州)车辆系统有限公司 | Hydraulic buffering system and assembly method |
| CN105545829A (en) * | 2016-01-14 | 2016-05-04 | 浙江大学 | Multi-legged robot hydraulic drive unit capable of absorbing landing impact |
| CN105545829B (en) * | 2016-01-14 | 2017-11-14 | 浙江大学 | It can absorb the multi-foot robot hydraulic drive unit of Ground shock waves |
| CN112797106A (en) * | 2021-01-28 | 2021-05-14 | 长沙鑫航机轮刹车有限公司 | Brake damping device |
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