CN204186860U - Hinging system for hinged chassis - Google Patents
Hinging system for hinged chassis Download PDFInfo
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- CN204186860U CN204186860U CN201420627732.9U CN201420627732U CN204186860U CN 204186860 U CN204186860 U CN 204186860U CN 201420627732 U CN201420627732 U CN 201420627732U CN 204186860 U CN204186860 U CN 204186860U
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Abstract
The utility model discloses a kind of hinging system for hinged chassis, comprise side arm, after-frame, turntable bearing, and be arranged at the left and right buffer of turntable bearing both sides, hydraulic control oil circuit on each buffer is set to: when oil hydraulic cylinder rod chamber is compressed, hydraulic oil in rod chamber returns in fuel reserve tank by the oil circuit setting damping, and in fuel reserve tank, hydraulic oil sucks in rodless cavity by undamped oil circuit; When oil hydraulic cylinder rodless cavity is compressed, returns into the oil circuit of fuel reserve tank from rodless cavity and be all undamped oil circuit from oil circuit during fuel reserve tank suction rod chamber; The buffer of design like this makes Ackermann steer angle, and the hydraulic cylinder piston rod of one of them buffer is stretched, for the cushion effect providing setting damping selected by buffer; The piston rod of another buffer is compressed, and provides small cushion effect, such that turn inside diameter is more steady, safety, and when vehicle turns round, buffer produces less damping torque, makes revolution more quick and portably.
Description
Technical field
The utility model relates to vehicle chassis hinge technologies field, especially relates to a kind of hinging system for hinged chassis with twin-tub list damping buffer unit.
Background technique
Along with developing rapidly of auto manufacturing of China, various Rail car manufacture industry is also being advanced by leaps and bounds, and articulated bus is large with its handling capacity of passengers, utilization factor high is promoted big and medium-sized cities at home gradually.Articulated coach is generally made up of the chassis hinging system etc. in compartment before and after compartment, front and back and connection, chassis hinging system comprises side arm, after-frame, turntable bearing and hydraulic damping device etc., side arm is generally fixedly connected with articulator front compartment by front cross beam, and after-frame is fixedly connected with articulator trunk by rear cross beam.
Wherein, the hydraulic damping device in chassis hinging system is the key factor of restriction articulator performance.The hydraulic damping device of articulated coach is generally by two, left and right oil hydraulic cylinder, liquid tank and electric control system composition, if the applicant is 201010141173.7 at application number, name is called the hydraulic buffer system disclosed in the Chinese patent of hydraulic buffer system, it comprises oil hydraulic cylinder 12 and liquid tank 13, as shown in figure 11, described oil hydraulic cylinder has rod chamber 121 and rodless cavity 122, oil hydraulic circuit between described rodless cavity 122 and liquid tank 13 comprises the first oil suction loop by the first one-way valve 141 place, second one-way valve 142 and hydraulic damping hole 151 form the first row oil return line at place, oil hydraulic circuit between described rod chamber 121 and liquid tank 13 comprises by the 3rd one-way valve 16, hydraulic damping hole 152, the second row oil return line that first solenoid valve 17 forms, and the 4th one-way valve 18 and the second solenoid valve 19 composition second oil suction loop composition, this hydraulic system is by the hydraulic damping hole of setting, for providing the buffer damping be directly proportional to turning speed when turn inside diameter travels, and there is the function of super angle locking and recovery craspedodrome.
So in turn inside diameter process, along with the change of angle of turn is large, buffer damping required for system is different, simultaneously, when vehicle returns to craspedodrome state by turn condition, this system is provided certain damping by the oil hydraulic cylinder compressing side under the effect in hydraulic damping hole, and slowed down the rotating speed of vehicle, as this hydraulic damping hole blocks once by hydraulic oil, then can produce the possibility of detonation.
Model utility content
The purpose of this utility model is the defect overcoming prior art, a kind of hinging system for hinged chassis is provided, it adopts the damping device of twin-tub list damping function, for turn inside diameter process provides more accurate hydraulic cushion damping to control, make the exercise performance of articulated system more stable, make vehicle recover the process of craspedodrome more fast and safely from turn condition simultaneously.
For achieving the above object, the utility model proposes following technological scheme: hinging system for hinged chassis, comprise side arm, after-frame and the turntable bearing be connected between side arm and after-frame and hydraulic damping device, described hydraulic damping device comprises oil hydraulic cylinder and fuel reserve tank, and the hydraulic control oil circuit be formed between oil hydraulic cylinder and fuel reserve tank, be provided with piston and piston rod in described oil hydraulic cylinder, oil hydraulic cylinder is divided into rod chamber and rodless cavity by piston; Described hydraulic control oil circuit comprises and is arranged at the first oil suction line between oil hydraulic cylinder rodless cavity and fuel reserve tank and the first oil return circuit, and the second oil suction line be arranged between oil hydraulic cylinder rod chamber and fuel reserve tank and the second oil return circuit; Hydraulic oil produces through described first oil suction line, the first oil return circuit and the second oil suction line basic undamped between oil hydraulic cylinder and fuel reserve tank, and hydraulic oil produces different dampings through the second oil return circuit according to the pressure difference on this oil circuit.
Preferably, described hydraulic damping device comprises the left buffer and right buffer that are arranged at described turntable bearing both sides, when articulator is turned, one of them hydraulic cylinder piston rod of described left buffer and right buffer is stretched, for buffer provides the cushion effect of described setting damping; The piston rod of another buffer oil hydraulic cylinder is compressed, for buffer provides small cushion effect.
Preferably, articulator turn left or turn right reach several angle time, the axis of a corresponding side buffer is by the rotating center of turntable bearing, and the piston rod of this side buffer is retracted into the shortest position; When articulator continue turning exceed described angle time, the piston rod of this side buffer will be become from indentation and stretch out.
Preferably, described different damping comprises the basic damping of the compression degree choice for use according to rod chamber, strengthens damping and safe lock damping.
Preferably, when articulator left-hand rotation and right-hand rotation same angular angle value, the damping torque mirror image each other that described hydraulic damping device produces.
Preferably, described first oil suction line is provided with the first one-way valve, described first oil return circuit is provided with the second one-way valve, the second oil suction line is provided with the 4th one-way valve.
Preferably, described second oil return circuit is provided with the 3rd one-way valve, mechanical valve, solenoid valve, hydraulic damping hole and the first relief valve, be in parallel with described first relief valve after described solenoid valve connects with described hydraulic damping hole and be connected, this solenoid valve be connected in parallel and the first relief valve connect with mechanical valve, the 3rd one-way valve again, described solenoid valve connects with described hydraulic damping hole basis of formation damping oil circuit, in order to produce basic damping; First relief valve of described parallel connection is formed and strengthens damping oil circuit, for generation of the enhancing damping larger than described basic damping.
Preferably, described second oil return circuit is also connected in parallel to safe lock oil circuit, described safe lock oil circuit is provided with the second relief valve be connected with described 3rd one-way valve, in order to provide the safe lock damping larger than described enhancing damping.
Preferably, described fuel reserve tank is arranged at the periphery of oil hydraulic cylinder, and the two ends of fuel reserve tank and oil hydraulic cylinder are fixedly connected on integrated package and end cap respectively; Described oil hydraulic cylinder is connected with described after-frame by described end cap with fuel reserve tank, and described piston and piston rod are connected with described side arm.
Preferably, described hydraulic damping device is provided with mechanical valve, described mechanical valve has the mechanical valve spool extended in oil hydraulic cylinder rod chamber, and described mechanical valve spool, under the pushing of piston, blocks the oil circuit at mechanical valve place.
The utility model utilizes in articulated system, when articulator angle of turn reaches the first angle (with 38.6 in embodiment ° for good), the central axis of left buffer or right buffer oil hydraulic cylinder is by the rotating center by turntable bearing, now, the piston rod of this side buffer is to rodless cavity one end compression rodless cavity to limit position (i.e. piston rod stretch out the shortest position), when articulator continue turning exceed described angle time, the piston rod of this side buffer will be become from indentation and stretch out.
After articulator angle of turn is more than the first angle, articulated system needs larger damping torque, utilizes now left and right buffer to be all the characteristic that piston rod stretches out, devises the hydraulic principle of buffer, obtain the damping torque curve of mirror image each other; When needing revolution after turn inside diameter, buffer system merely provides relatively very low damping torque, makes vehicle can rapid light revolution; When vehicle electrically controlling system breaks down, during the hydraulic buffer system power-off of twin-tub list damping function, damping and safe lock damping function is strengthened for articulated system provides, guarantee that vehicle safe driving is to repair shop, and in abnormal power-down situation, for vehicle provides high damping force, make vehicle keep original shape as far as possible, guarantee safety.
Relatively existing technology, the utility model cost is lower, and articulated system exercise performance is more stable, and Safety performance is higher.
Accompanying drawing explanation
Fig. 1 is hinging system for hinged chassis schematic diagram of the present utility model;
Fig. 2 is the hydraulic schematic diagram of buffer in hinging system for hinged chassis of the present utility model;
Fig. 3 is the structural representation of buffer in hinging system for hinged chassis of the present utility model;
Fig. 4 is the schematic perspective view of integrated package in buffer of the present utility model;
Fig. 5 is the cross-sectional schematic that mechanical valve is installed in integrated package;
Fig. 6 is the hydraulic schematic diagram of the utility model hinging system for hinged chassis;
The position relationship schematic diagram of the utility model turntable bearing and hydraulic damping device when Fig. 7 is vehicle craspedodrome;
Fig. 8 be vehicle turn right 38.6 ° time the utility model turntable bearing and the position relationship schematic diagram of hydraulic damping device;
Fig. 9 is the schematic diagram of the utility model articulator articulated system buffer second embodiment;
Figure 10 is the schematic diagram of the utility model articulator articulated system buffer the 3rd embodiment;
Figure 11 is the hydraulic schematic diagram of articulator articulated system in background technique.
Reference character
1 side arm 2 after-frame
3 turntable bearing 4 ECU (Electrical Control Unit)
The right buffer of 5 left buffer 6
51 oil hydraulic cylinder 511 rodless cavities
512 rod chamber 52 fuel reserve tanks
53 integrated package 54 end caps
55 piston 56 piston rods
57 outer tube 58 Cock screws
59 filler opening 91 first one-way valves
92 second one-way valve 93 the 3rd one-way valves
94 the 4th one-way valve 95 mechanical valve
951 mechanical valve spool 952 springs
953 spring housing 954 sections of circulation
955 occluded segment 21,23,96 solenoid valves
98 first relief valve 22,24,97 hydraulic damping holes
99 second relief valves
Embodiment
Below in conjunction with accompanying drawing of the present utility model, clear, complete description is carried out to the technological scheme of the utility model embodiment.
Shown in Fig. 1, the hinging system for hinged chassis that the utility model discloses, for connecting compartment, the front and back (not shown) of articulated bus, it comprises side arm 1, after-frame 2, turntable bearing 3, hydraulic damping device and automatical control system 4.Described side arm 1 connects front compartment, and after-frame 2 connects trunk, and compartment, front and back realizes the turning of vehicle by the rotation of turntable bearing 3; Hydraulic damping device comprises the left buffer 5 and right buffer 6 that are arranged at turntable bearing 3 both sides, and the two ends of left buffer 5 and right buffer 6 are connected on side arm 1 and after-frame 2, for providing buffer damping at Ackermann steer angle.
Figure 2 shows that the hydraulic schematic diagram of left buffer 5 and right buffer 6, left buffer 5 is identical with the structure of right buffer 6, for left buffer 5, it comprises oil hydraulic cylinder 51, fuel reserve tank 52, integrated package 53, end cap 54, and be arranged at the hydraulic control oil circuit between oil hydraulic cylinder 51 and fuel reserve tank 52.It is peripheral that described fuel reserve tank 52 is arranged at oil hydraulic cylinder 51, and integrated package 53 is fixedly installed in one end of described oil hydraulic cylinder 51 and fuel reserve tank 52, and end cap 54 is installed on the other end of oil hydraulic cylinder 51 and fuel reserve tank 52.Be provided with piston 55 in described oil hydraulic cylinder 51, piston 55 be connected with piston rod 56, oil hydraulic cylinder 51 is divided into rodless cavity 511 and rod chamber 512 by piston 55.Particularly, after described oil hydraulic cylinder 51, fuel reserve tank 52 are fixedly connected with integrated package 53, be connected on the after-frame 2 of articulated system; Described piston 55 and piston rod 56 are connected on the side arm 1 of articulated system, left buffer 5 and right buffer 6 pass through stretching and the indentation of piston rod 56 at Ackermann steer angle thus, hydraulic control oil circuit produces buffer damping, thus provides cushion effect for turn inside diameter.
Shown in composition graphs 3, described integrated package 53 is arranged at one end of oil hydraulic cylinder 51 and fuel reserve tank 52, and carries out end part seal by Sealing (figure does not mark).The periphery of oil hydraulic cylinder 51 cylinder barrel is provided with outer tube 57, and described fuel reserve tank 52 is for being formed at sealing area annular between the cylinder barrel of outer tube 57 and oil hydraulic cylinder 51.Described integrated package 53 passes through together with flange welding with outer tube 57, and end cap 54 is arranged at the other end of oil hydraulic cylinder 51 cylinder barrel and outer tube 57, and also carries out end part seal by Sealing.More preferably, described integrated package 53 is also provided with flush end Cock screw 58 and is pressed on cylinder barrel, avoid cylinder barrel moving axially between integrated package 53 and end cap 54.
Described hydraulic control oil circuit is arranged between described oil hydraulic cylinder 51 and fuel reserve tank 52, comprise the first oil suction line, first oil return circuit, second oil suction line and the second oil return circuit, described first oil suction line is arranged between the rodless cavity 511 of fuel reserve tank 52 and oil hydraulic cylinder 51, this oil circuit is provided with the first one-way valve 91, and this first one-way valve 91 stretches out at piston rod 56, namely open when the oil pressure of rodless cavity 511 reduces, make hydraulic oil be sucked into oil hydraulic cylinder 51 rodless cavity 511 from fuel reserve tank 52; First oil return circuit is arranged between the rodless cavity 511 of oil hydraulic cylinder 51 and fuel reserve tank 52, this oil circuit is provided with the second one-way valve 92, second one-way valve 92 inwardly compresses at piston rod 56, namely open when the oil pressure in oil hydraulic cylinder 51 rodless cavity 511 increases, hydraulic oil is discharged to fuel reserve tank 52 from oil hydraulic cylinder 51 rodless cavity 511; Second oil suction line is arranged between the rod chamber 512 of fuel reserve tank 52 and oil hydraulic cylinder 51, this oil circuit is provided with the 4th one-way valve 94,4th one-way valve 94 is opened when the oil pressure of oil hydraulic cylinder 51 rod chamber reduces, and makes hydraulic oil be drawn into rod chamber 512 from fuel reserve tank 52; Second oil return circuit is arranged between oil hydraulic cylinder 51 rod chamber 512 and fuel reserve tank 52, this oil circuit is provided with the 3rd one-way valve 93 and damping oil circuit, opens when the oil pressure of wherein said 3rd one-way valve 93 in rod chamber 512 increases.
Described damping oil circuit comprises the damping oil circuit control and safe lock oil circuit that are connected in parallel, described damping oil circuit control is provided with mechanical valve 95, solenoid valve 96, hydraulic damping hole 97 and the first relief valve 98, wherein said solenoid valve 96 connects after basis of formation damping oil circuit with hydraulic damping hole 97, be in parallel with the first relief valve 98 strengthened on damping oil circuit and be connected, described mechanical valve 95 with in parallel after solenoid valve 96, hydraulic damping hole 97 and the first relief valve 98 are connected.Described safe lock oil circuit is provided with the second relief valve 99, after safe lock oil circuit and damping oil circuit control are in parallel, one end is connected with described 3rd one-way valve 93, and the other end is connected on fuel reserve tank 52.Wherein, solenoid valve 96 and hydraulic damping hole 97 are in series the basic damping oil circuit formed, for buffer provides the cushion effect of basic damping; First relief valve 98 place strengthens damping oil circuit, increases strongly damped cushion effect for buffer provides.
More preferably, first relief valve 98 and the second relief valve 99 are preset with hydraulic pressure opening pressure respectively, and the hydraulic pressure that the hydraulic pressure opening pressure of the first relief valve 98 produces when normal running speed higher than hydraulic damping hole 97, the hydraulic pressure opening pressure of the second relief valve 99 is higher than the hydraulic pressure opening pressure of the first relief valve 98, like this, make the hydraulic damping produced on enhancing damping oil circuit be greater than the hydraulic damping that basic damping oil circuit produces, and the hydraulic damping that safe lock oil circuit produces is greater than the hydraulic damping strengthening and damping oil circuit produces.
Further, described first oil suction line and the first oil return circuit are arranged on described end cap 54, and described second oil suction line and the second oil return circuit are arranged on described integrated package 53.
When the piston rod 56 of oil hydraulic cylinder 51 stretches out to one end of rod chamber 512, for rod chamber 512, its volume reduces, compression hydraulic oil flows in fuel reserve tank 52 through the second oil return circuit, when solenoid valve 96 be in electricity condition time, basic damping oil circuit is communicated with, and hydraulic damping hole 97 arranges buffer damping pressure for buffer, now buffer buffer damping power and be directly proportional by the hydraulic fluid flow rate in hydraulic damping hole, that is and piston rod 56 linear velocity of stretching out be directly proportional.
The linear velocity of stretching out when piston rod 56 is enough large, when the pressure that hydraulic damping hole 97 produces reaches the force value that the first relief valve 98 presets, first relief valve 98 starts pressure release, and keep the force value that the pressure almost constant in oil circuit sets at the first relief valve 98, until the linear velocity that piston rod 56 stretches out reduces, reduced by the hydraulic fluid flow rate in hydraulic damping hole 97, the force value that the force value of generation sets lower than the first relief valve 98; When solenoid valve 96 is in power failure state, basic damping oil circuit is closed, and now, the first relief valve 98 is buffer setting buffer damping pressure, and damping pressure substantially constant is the cracking pressure that the first relief valve 98 sets; When piston rod 56 continues to stretch out, piston gradually reduces the handle of the mechanical valve 95 be installed on integrated package 53, the passage of damping oil circuit control is reduced gradually, until close, now the second relief valve 99 is buffer setting buffer damping pressure, and buffer is in safe lock state;
As shown in Figure 4,5, described mechanical valve 95 is installed in the mechanical valve mounting hole (figure does not mark) on described integrated package 53, mounting hole is provided with the filler opening 59 of damping oil circuit control, described mechanical valve 95 has mechanical valve spool 951, and by the spring 952 of mechanical valve spool 951 pushing tow and spring housing 953.Machinery spool 951 has the less circulation section 954 of diameter and the larger occluded segment 955 of diameter.Mechanical valve 95 is installed in mounting hole, and the outer end of spool extends in the rod chamber 512 of the outer oil hydraulic cylinder 51 of integrated package 53.Under normal working, the filler opening 59 on mounting hole is positioned at the position at circulation 954 sections of places of mechanical spool, and hydraulic oil is circulated by filler opening 59; After mechanical spool is pushed by the piston stretched laterally, make mechanical valve 95 spool Compress Spring and to mounting hole medial movement, when spool occluded segment 955 extend into the position at filler opening 59 place, owing to being drive fit between spool occluded segment 955 and mounting hole, therefore the filler opening 59 of damping oil circuit control is blocked, that is mechanical valve 95 closes, according to the setting of oil circuit on integrated package, spool occluded segment 955 plugs basic damping oil circuit and strengthens the common in-line of damping oil circuit, and does not block the filler opening of safe lock oil circuit and the filler opening of the second oil suction line.
When the piston rod 56 of oil hydraulic cylinder 51 stretches out to one end of rod chamber 512, for rodless cavity 511, its volume increases, negative pressure is produced in cavity volume, first one-way valve 91 is opened, make hydraulic oil by the first oil suction line from fuel reserve tank 52 oil suction, and damping on this oil circuit is negligible, forms undamped oil circuit.
When the piston rod 56 of oil hydraulic cylinder 51 is to one end indentation of rodless cavity 511, for rod chamber 512, its volume increases, and produces negative pressure in cavity volume, 4th one-way valve 94 is opened, and hydraulic oil is by the rod chamber 512 of the second oil suction line from fuel reserve tank 52 inhalant liquid cylinder pressure 51; For rodless cavity 511, its volume reduces, and in container, oil pressure increases, second one-way valve 92 is opened, and hydraulic oil is discharged to fuel reserve tank 52 by the first oil return circuit from rodless cavity 511, now, damping slow impulse force on this oil circuit is also almost negligible, is also formed as undamped oil circuit.
With further reference to Fig. 6, after the left and right buffer 5,6 of mirror image is connected with articulated system each other, and after associating control by ECU (Electrical Control Unit) 4, constitute the hydraulic buffer system of twin-tub list damping function (because the structure of left and right buffer 5,6 is identical with oil hydraulic circuit, therefore in figure, eliminate the mark of the corresponding element of right buffer 6), described ECU (Electrical Control Unit) 4 is identical with of the prior art, include car load CAN communication system and proximity switch (not shown), after vehicle launch, the solenoid valve 96 of left and right buffer 5,6 obtains electric; Figure 7 shows that the position relationship of articulated system when vehicle is kept straight on, now, left buffer 5 and right buffer 6 are symmetrically distributed in the left and right sides of anchor bearing 3.When vehicle turns right to the first angle (being 38.6 ° in the present embodiment), the position relationship of hydraulic buffer system and articulated system is as Fig. 8, now the axis of right buffer 6 passes through the rotating center of turntable bearing 3, and the piston rod 56 of right buffer 6 is retracted into the shortest position; As vehicle continues to turn right, piston rod 56 will be become from indentation and stretch out, and left buffer 5 stretches out continuing, and namely when turn inside diameter angle is greater than the first angle, the piston rod 56 of left and right buffer 5,6 is all in the state of stretching out; And when vehicle is turned right within the scope of the turning being greater than the first angle, the piston rod 56 of left and right buffer 5,6 is all in the state of stretching out.
When vehicle is when keeping straight on and turn right between the first angle, the piston rod 56 of the left buffer 5 of articulated system stretches out, and provides basic damping buffering moment; Piston rod 56 indentation of right buffer 6, from the working procedure of aforementioned buffers, now the buffering moment that provides of right buffer 6 is negligible; When vehicle right-hand rotation angle is between the first angle and the second angle time (the second angle in the present embodiment is 48 °), the piston rod 56 of left buffer 5 stretches out, for articulated system provides basic damping buffering moment, right buffer 6 piston rod 56 stretches out, and obtain the damping arm of force, for articulated system provides basic damping slow impulse force along with vehicle is turned right.
When vehicle continues to turn right between the second angle and the 3rd angle (in the present embodiment, the 3rd angle is 51 °), proximity switch in ECU (Electrical Control Unit) 4 triggers, control signal is sent by CAN communication system to car load is automatically controlled, ECU (Electrical Control Unit) 4 controls the solenoid valve 96 of left and right buffer 5,6, make solenoid valve 96 power-off, left and right buffer solenoid valve 96 cuts out, and now, left and right buffer 5,6 increases strongly damped buffering moment for articulated system provides.
When vehicle turns right between the 3rd angle and the 4th angle (the 4th angle in the present embodiment is 54 °), proximity switch in ECU (Electrical Control Unit) 4 triggers, signal is sent by CAN communication system to car load is automatically controlled, ECU (Electrical Control Unit) 4 controls the solenoid valve 96 of left and right buffer 5,6, make solenoid valve 96 power-off, the piston rod 56 of left buffer 5 stretches out to pressing mechanical valve 95 handle simultaneously, block the oil circuit at mechanical valve 95 place, for articulated system provides the buffering moment of safe lock damping, right buffer 6 provides enhancing damping torque for articulated system.
When vehicle start to become to the process between the 4th angle from turning right keep straight on or left-hand rotation time, at this moment the front and back frame 1 of articulated system, 2 need revolution, the left buffer 5 of twin-tub list damping function inwardly compresses due to piston rod 56, its damping produced is ignored, articulated system provides damping torque to become from left buffer 5 and provides damping torque by right buffer 6, now, the arm of force of left buffer 5 is greater than the arm of force of right buffer 6, damping based on the damping of right buffer 6, equal by moment of torsion the formula that power is multiplied by the arm of force can draw, along with articulated system revolution, the damping torque that hydraulic buffer system provides for articulated system has diminished, so that articulated system can turn round easily.And angle of turn is larger, stop angle of turn to become large damping torque larger, and the damping torque provided when turning round is less, makes vehicle can be turned back to rapidly normal travelling state, avoiding revolution makes the excessive vehicle of damping torque produce sideslip, improves the Security of driving.
When vehicle electrically controlling system 4 breaks down, solenoid valve 96 power-off in left and right buffer 5,6, left and right buffer 5,6 will strengthen damping and safe lock damping function for articulated system provides, guarantee that vehicle safe driving is to repair shop, and in abnormal power-down situation, for vehicle provides high damping force, make vehicle keep original shape as far as possible, guarantee safety.
Articulated system revolution proving by the same methods, when vehicle turns left, twin-tub list damping function hydraulic buffer system is at identical angle value for articulated system provides substantially equal damping torque, and just the effect of left and right buffer 5,6 is exchanged.Like this, for articulated system, when turning left and turn right, obtain the buffering M curve of mirror image each other.
In other embodiments of the present utility model, so the damping oil circuit control on the second oil return circuit between oil hydraulic cylinder 51 and fuel reserve tank 52 can change according to the requirement of wagon control precision, as at least one road in parallel in Fig. 9 comprises the damping oil circuit control in solenoid valve 21 and hydraulic damping hole 22, or in Figure 10, series connection comprises the damping oil circuit control in solenoid valve 23 and hydraulic damping hole 24, makes the hydraulic damping cushion effect that damping oil circuit control provides more stably control the turning process of vehicle.
Technology contents of the present utility model and technical characteristics have disclosed as above; but those of ordinary skill in the art still may do all replacement and the modification that do not deviate from the utility model spirit based on teaching of the present utility model and announcement; therefore; the utility model protection domain should be not limited to the content that embodiment discloses; and various do not deviate from replacement of the present utility model and modification should be comprised, and contained by present patent application claim.
Claims (10)
1. hinging system for hinged chassis, comprise side arm, after-frame and the turntable bearing be connected between side arm and after-frame and hydraulic damping device, described hydraulic damping device comprises oil hydraulic cylinder and fuel reserve tank, and the hydraulic control oil circuit be formed between oil hydraulic cylinder and fuel reserve tank, be provided with piston and piston rod in described oil hydraulic cylinder, oil hydraulic cylinder is divided into rod chamber and rodless cavity by piston; It is characterized in that, described hydraulic control oil circuit comprises and is arranged at the first oil suction line between oil hydraulic cylinder rodless cavity and fuel reserve tank and the first oil return circuit, and the second oil suction line be arranged between oil hydraulic cylinder rod chamber and fuel reserve tank and the second oil return circuit; Hydraulic oil produces through described first oil suction line, the first oil return circuit and the second oil suction line basic undamped between oil hydraulic cylinder and fuel reserve tank, and hydraulic oil produces different dampings through the second oil return circuit according to the pressure difference on this oil circuit.
2. hinging system for hinged chassis according to claim 1, it is characterized in that, described hydraulic damping device comprises the left buffer and right buffer that are arranged at described turntable bearing both sides, when articulator is turned, one of them hydraulic cylinder piston rod of described left buffer and right buffer is stretched, for buffer provides the cushion effect of described setting damping; The piston rod of another buffer oil hydraulic cylinder is compressed, for buffer provides small cushion effect.
3. hinging system for hinged chassis according to claim 2, it is characterized in that, articulator turn left or turn right reach several angle time, the axis of a corresponding side buffer is by the rotating center of turntable bearing, and the piston rod of this side buffer is retracted into the shortest position; When articulator continue turning exceed described angle time, the piston rod of this side buffer will be become from indentation and stretch out.
4. hinging system for hinged chassis according to claim 1 and 2, is characterized in that, described different damping comprises the basic damping of the compression degree choice for use according to rod chamber, strengthens damping and safe lock damping.
5. hinging system for hinged chassis according to claim 1, is characterized in that, when articulator left-hand rotation and right-hand rotation same angular angle value, and the damping torque mirror image each other that described hydraulic damping device produces.
6. hinging system for hinged chassis according to claim 1, is characterized in that, described first oil suction line is provided with the first one-way valve, and described first oil return circuit is provided with the second one-way valve, the second oil suction line is provided with the 4th one-way valve.
7. hinging system for hinged chassis according to claim 1, it is characterized in that, described second oil return circuit is provided with the 3rd one-way valve, mechanical valve, solenoid valve, hydraulic damping hole and the first relief valve, be in parallel with described first relief valve after described solenoid valve connects with described hydraulic damping hole and be connected, this solenoid valve be connected in parallel and the first relief valve connect with mechanical valve, the 3rd one-way valve again, described solenoid valve connects with described hydraulic damping hole basis of formation damping oil circuit, in order to produce basic damping; First relief valve of described parallel connection is formed and strengthens damping oil circuit, for generation of the enhancing damping larger than described basic damping.
8. want the hinging system for hinged chassis described in 7 according to right, it is characterized in that, described second oil return circuit is also connected in parallel to safe lock oil circuit, described safe lock oil circuit is provided with the second relief valve be connected with described 3rd one-way valve, in order to provide the safe lock damping larger than described enhancing damping.
9. hinging system for hinged chassis according to claim 1, is characterized in that, described fuel reserve tank is arranged at the periphery of oil hydraulic cylinder, and the two ends of fuel reserve tank and oil hydraulic cylinder are fixedly connected on integrated package and end cap respectively; Described oil hydraulic cylinder is connected with described after-frame by described end cap with fuel reserve tank, and described piston and piston rod are connected with described side arm.
10. hinging system for hinged chassis according to claim 1, it is characterized in that, described hydraulic damping device is provided with mechanical valve, described mechanical valve has the mechanical valve spool extended in oil hydraulic cylinder rod chamber, described mechanical valve spool, under the pushing of piston, blocks the oil circuit at mechanical valve place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420627732.9U CN204186860U (en) | 2014-10-27 | 2014-10-27 | Hinging system for hinged chassis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420627732.9U CN204186860U (en) | 2014-10-27 | 2014-10-27 | Hinging system for hinged chassis |
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| CN204186860U true CN204186860U (en) | 2015-03-04 |
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| CN201420627732.9U Active CN204186860U (en) | 2014-10-27 | 2014-10-27 | Hinging system for hinged chassis |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443643A (en) * | 2015-12-24 | 2016-03-30 | 伊卡路斯(苏州)车辆系统有限公司 | Hydraulic buffering system and assembling method |
| 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 |
| CN113415437A (en) * | 2021-08-25 | 2021-09-21 | 民航成都物流技术有限公司 | Anti-sliding device for automatic wheel chock of vehicle |
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2014
- 2014-10-27 CN CN201420627732.9U patent/CN204186860U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443643A (en) * | 2015-12-24 | 2016-03-30 | 伊卡路斯(苏州)车辆系统有限公司 | Hydraulic buffering system and assembling method |
| 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 |
| CN105443643B (en) * | 2015-12-24 | 2017-10-10 | 伊卡路斯(苏州)车辆系统有限公司 | Hydraulic buffer system and assemble method |
| CN113415437A (en) * | 2021-08-25 | 2021-09-21 | 民航成都物流技术有限公司 | Anti-sliding device for automatic wheel chock of vehicle |
| CN113415437B (en) * | 2021-08-25 | 2021-12-07 | 民航成都物流技术有限公司 | Anti-sliding device for automatic wheel chock of vehicle |
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