CN102019834A - Wheel crane and suspension hydraulic system thereof - Google Patents
Wheel crane and suspension hydraulic system thereof Download PDFInfo
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- CN102019834A CN102019834A CN2010105846121A CN201010584612A CN102019834A CN 102019834 A CN102019834 A CN 102019834A CN 2010105846121 A CN2010105846121 A CN 2010105846121A CN 201010584612 A CN201010584612 A CN 201010584612A CN 102019834 A CN102019834 A CN 102019834A
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Abstract
The invention discloses a crane suspension hydraulic system. The system comprises a first suspension cylinder (A1) and a second suspension cylinder (A2). The system is characterized in that the rodless cavity of the first suspension cylinder (A1) is communicated with the rodless cavity of the second suspension cylinder (A2) through a first oil line; the rod cavity of the first suspension cylinder (A1) is communicated with the rod cavity of the second suspension cylinder (A2) through a second oil line; the system also comprises a change valve arranged in the first oil line or the second oil line; when the change valve is in a first working position, the first oil line or the second oil line is disconnected; and when the change valve is in a second working position, the first oil line and the second oil line are both communicated. The suspension hydraulic system can realize the convertion of a rigid locking state and an elastic loading state, the required elements are fewer, the structure is simpler and the production cost can be effectively controlled. The invention also provides a wheel crane containing the suspension hydraulic system.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly a kind of hoisting crane suspension hydraulic efficiency pressure system.The invention still further relates to a kind of wheel crane that comprises above-mentioned suspension hydraulic efficiency pressure system.
Background technology
Suspension is the general name of the power transmission connecting device between automobile chassis frame and the vehicle bridge, its transmission and carrying act on power and the moment of torsion between wheel and the vehicle frame, and can cushion the impulsive force of passing to vehicle frame or vehicle body by uneven road surface, and the vibration that decays and cause thus, can smooth-going travelling to guarantee automobile.
The suspension hydraulic efficiency pressure system is a kind of draft hitch that is made of hydraulic efficiency pressure system, has the stationarity and the stable function that guarantee vehicle '.
Suspension hydraulic efficiency pressure system with hoisting crane is an example, and the suspension that is used for the wheel crane chassis at present mainly contains two kinds of mechanical leaf spring suspension and hydro pneumatic suspensions.Machinery leaf spring suspension frame structure is simple, cost is lower, but this suspension can't be in rigid state, thereby can't adapt to some special road conditions or operating modes.
The hydro pneumatic suspension structure mainly is made up of two suspension oil cylinders and four guiding propelling rods.Two suspension oil cylinder left-right symmetric and and vertical guide have angle and be in tilted layout between wheel and vehicle frame, the two ends of suspension oil cylinder are hinged with vehicle frame and axletree respectively, only can bear axial force, mainly work to bear vertical load and roll stable.Four propelling rods mainly work to bear vehicle towed power and braking force and wheel alignment.
The rodless cavity of one side suspension oil cylinder and rod chamber are communicated with opposite side suspension cylinder rod chamber and rodless cavity respectively, two suspension oil cylinders also are communicated with two energy storages respectively, pneumatic valve is set respectively on above-mentioned path, the mode of operation of pneumatic valve is controlled by gas source control system, when gas source control system does not provide pressure signal, the rodless cavity of one side suspension oil cylinder and rod chamber disconnect with the rod chamber of opposite side suspension oil cylinder and rodless cavity respectively, and the disconnection that is connected of the rodless cavity of two suspension oil cylinders and two energy storages, this moment, suspension was in rigid state; When gas source control system provides pressure signal, the rodless cavity of one side suspension oil cylinder and rod chamber are communicated with the rod chamber and the rodless cavity of opposite side suspension oil cylinder respectively, and the rodless cavity of two suspension oil cylinders is communicated with two energy storages, nitrogen in two suspension oil cylinder retractables and the compress energy storage device, play the effect of buffering and absorption vibrational energy, at this moment, whole suspension fork mechanism is in elastic stage.
The element that the hydro pneumatic suspension device needs is more, system complex, and cost is higher, and because being connected between vehicle frame and the vehicle bridge mainly relies on the suspension oil cylinder, vehicle needs to carry out the leveling operation before travelling, make the suspension oil cylinder be in meta, and operational sequence is comparatively complicated.
Therefore, how to provide a kind of and both can realize that conversion of rigid state and elastic stage and suspension hydraulic efficiency pressure system simple in structure were those skilled in the art's technical issues that need to address.
Summary of the invention
The suspension hydraulic efficiency pressure system that the purpose of this invention is to provide a kind of hoisting crane, this suspension hydraulic efficiency pressure system simple in structure, and can realize the conversion of crane stiff state and elastic stage.Another object of the present invention provides a kind of wheel crane that comprises above-mentioned suspension hydraulic efficiency pressure system.
For solving the problems of the technologies described above, the invention provides a kind of hoisting crane suspension hydraulic efficiency pressure system, comprise the first suspension oil cylinder and the second suspension oil cylinder, the rodless cavity of the described first suspension oil cylinder is communicated with by first oil circuit with the rodless cavity of the described second suspension oil cylinder; The rod chamber of the rod chamber of the described first suspension oil cylinder and the described second suspension oil cylinder is communicated with by second oil circuit; Also comprise the change-over valve of being located in described first oil circuit or described second oil circuit, when described change-over valve is in first control position, described first oil circuit or described second oil circuit disconnect, and when described change-over valve was in second control position, described first oil circuit and described second oil circuit all were communicated with.
Preferably, described change-over valve is located in described first oil circuit.
Preferably, be provided with the first throttle valve and second flow regulating valve in described second oil circuit.
Preferably, described change-over valve comprises first change-over valve and second change-over valve, and described first change-over valve and described second change-over valve all are located in described first oil circuit; Also comprise fuel tank, the oil circuit of described first oil circuit between described first change-over valve and described second change-over valve is communicated with described fuel tank, and described second oil circuit is communicated with described fuel tank; Described first oil circuit is equipped with by pass valve on the path of the oil circuit between described first change-over valve and described second change-over valve and described second oil circuit and described fuel tank.
Preferably, the oil circuit of described first oil circuit between described first change-over valve and described second change-over valve is communicated with hydraulic power source, and described second oil circuit is communicated with described hydraulic power source.
Preferably, described first oil circuit is equipped with reducing valve on the path of the oil circuit between described first change-over valve and described second change-over valve and second oil circuit and described hydraulic power source.
Preferably, described hydraulic power source is energy storage or Hydraulic Pump.
Suspension hydraulic efficiency pressure system provided by the present invention comprises the first suspension oil cylinder and the second suspension oil cylinder, and the rodless cavity of the described first suspension oil cylinder is communicated with by first oil circuit with the rodless cavity of the described second suspension oil cylinder; The rod chamber of the rod chamber of the described first suspension oil cylinder and the described second suspension oil cylinder is communicated with by second oil circuit; And control the connection of first oil circuit or second oil circuit by change-over valve.When first oil circuit all is communicated with second oil circuit, the suspension hydraulic efficiency pressure system is in the conversion of elastic carrier state, when first oil circuit or second oil circuit disconnect, the hydraulic oil of two suspension oil cylinders does not circulate, the suspension hydraulic efficiency pressure system is in the rigidity blocking, and then this kind suspension hydraulic efficiency pressure system can realize the conversion of rigidity blocking and elastic carrier state, and required element is less, structure is comparatively simple, can control production cost effectively.
For reaching another object of the present invention, the present invention also provides a kind of wheel crane, comprise vehicle frame, back vehicle bridge, preceding vehicle bridge and suspension hydraulic efficiency pressure system, described suspension hydraulic efficiency pressure system comprises the first suspension oil cylinder and the second suspension oil cylinder, the two ends of described first suspension oil cylinder and the described second suspension oil cylinder are connected with described vehicle frame and back vehicle bridge respectively, and described suspension hydraulic efficiency pressure system is above-mentioned each described suspension hydraulic efficiency pressure system.
Preferably, the middle part of described back vehicle bridge is provided with connecting panel, and described connecting panel and described vehicle frame are hinged, and jointed shaft is vertical with described back vehicle bridge.
Preferably, described preceding vehicle bridge and described vehicle frame are fixed.
Because above-mentioned suspension hydraulic efficiency pressure system has above-mentioned technique effect, the wheel crane with this suspension hydraulic efficiency pressure system also has constructed effect.
Description of drawings
Fig. 1 is the schematic diagram of a kind of specific embodiment of suspension hydraulic efficiency pressure system provided by the present invention;
Fig. 2 is the structural representation of suspension system in a kind of specific embodiment of wheel crane provided by the present invention.
The specific embodiment
Core of the present invention provides a kind of suspension hydraulic efficiency pressure system of hoisting crane, this suspension hydraulic efficiency pressure system simple in structure, and can realize the conversion of crane stiff state and elastic stage.Another core of the present invention provides a kind of wheel crane that comprises above-mentioned suspension hydraulic efficiency pressure system.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1, Fig. 1 is the schematic diagram of a kind of specific embodiment of suspension hydraulic efficiency pressure system provided by the present invention.
The hoisting crane suspension hydraulic efficiency pressure system that is provided in this embodiment comprises the first suspension oil cylinder A1 and the second suspension oil cylinder A2, and the two ends of two suspension oil cylinders can be connected with vehicle bridge and vehicle frame respectively, and promptly vehicle bridge is connected by the suspension oil cylinder with vehicle frame.The rodless cavity of the rodless cavity of the first suspension oil cylinder A1 and the second suspension oil cylinder A2 is communicated with by first oil circuit, the rod chamber of the rod chamber of the first suspension oil cylinder A1 and the second suspension oil cylinder A2 is communicated with by second oil circuit, promptly two chambeies of two chambeies of the first suspension oil cylinder A1 and the second suspension oil cylinder A2 form hydraulic circuits, when then being in connected state, the piston rod of the first suspension oil cylinder A1 is made the opposite fore and aft motion of direction with the piston rod of the second suspension oil cylinder A2.
The suspension hydraulic efficiency pressure system also comprises the change-over valve of being located in first oil circuit or second oil circuit, be that change-over valve can be located on the path of the first suspension oil cylinder A1 rodless cavity and the second suspension oil cylinder A2 rodless cavity, also change-over valve can be located on the path of the first suspension oil cylinder A1 rod chamber and the second suspension oil cylinder A2 rod chamber.Change-over valve need have two control positioies at least, when being in first control position, first oil circuit or second oil circuit disconnect, when change-over valve is in second control position, first oil circuit all is communicated with second oil circuit, promptly controls the break-make of oil circuit between the first suspension oil cylinder A1 and the second suspension oil cylinder A2 by change-over valve.
When change-over valve is in first control position, first oil circuit or second oil circuit disconnect, and then the hydraulic oil of the first suspension oil cylinder A1 and the second suspension oil cylinder A2 does not flow, the chamber locking of two suspension oil cylinders, piston rod is not all made fore and aft motion, and this moment, the suspension hydraulic efficiency pressure system was in the rigidity blocking; When change-over valve is in second control position, first oil circuit and second oil circuit all are communicated with, the hydraulic oil of the first suspension oil cylinder A1 rodless cavity can flow into the second suspension oil cylinder A2 rodless cavity, promote the second suspension oil cylinder A2 piston motion, the piston rod of the second suspension oil cylinder A2 stretches out, and then the hydraulic oil of the second suspension oil cylinder A2 rod chamber flows into the rod chamber of the first suspension oil cylinder A1, certainly, also can carry out according to opposite order, this moment, the suspension hydraulic efficiency pressure system was in the elastic carrier state.
When the suspension hydraulic efficiency pressure system is in the rigidity blocking, owing to have only hydraulic oil in the chamber of the first suspension oil cylinder A1 and the second suspension oil cylinder A2, and the modulus of elasticity of hydraulic oil is smaller, then the compressible amount of hydraulic oil is less in the rodless cavity of two suspension oil cylinders and the rod chamber, therefore, the piston rod of two suspension oil cylinders all can not bounce back or stretch out, and then the rigidity blocking of suspension hydraulic efficiency pressure system is comparatively reliable.
When the suspension hydraulic efficiency pressure system was in the elastic carrier state, the rodless cavity and the rod chamber of two suspension oil cylinders were communicated with.When the protruding road surface of the cooresponding tire process of the first suspension oil cylinder A1, piston rod is withdrawn under the effect that compresses of vehicle frame gravity and vehicle bridge, then the hydraulic oil of the first suspension oil cylinder A1 rodless cavity enters in the second suspension oil cylinder A2 rodless cavity, and the hydraulic oil in the second suspension oil cylinder A2 rod chamber enters in the first suspension oil cylinder A1 rod chamber, the piston rod of the second suspension oil cylinder A2 stretches out, therefore, can make car body continue the state of held stationary.In like manner, when the protruding road surface of the cooresponding tire process of the second suspension oil cylinder A2, the flow direction and the foregoing description of two interior hydraulic oil of suspension oil cylinder are just the opposite, do not give unnecessary details at this.Therefore, this suspension hydraulic efficiency pressure system can realize the balance of car body automatically.
This suspension hydraulic efficiency pressure system has realized the conversion of rigidity blocking and elastic carrier state, and required element is less, and structure is comparatively simple, can control production cost effectively.
Change-over valve can be located at first oil circuit, and promptly change-over valve is controlled the break-make of the first suspension oil cylinder A1 rodless cavity and the second suspension oil cylinder A2 rodless cavity, is convenient to the layout of actual hydraulic pressure system.
The first throttle valve B1 and the second flow regulating valve B2 can be set in second oil circuit, promptly on the path of the first suspension oil cylinder A1 rod chamber and the second suspension oil cylinder A2 rod chamber, the first throttle valve B1 and the second flow regulating valve B2 be set.When the suspension hydraulic efficiency pressure system is in the elastic carrier state, the rod chamber of two suspension oil cylinders communicates, flow regulating valve can be regulated its flow that passes through, then the flow of the hydraulic oil that flows out from the first suspension oil cylinder A1 rod chamber can be regulated by first throttle valve B1, the flow of the hydraulic oil that flows out from the second suspension oil cylinder A2 rod chamber can be regulated by the second flow regulating valve B2, thereby can make two hydraulic fluid flow rate and flow velocitys between the suspension cylinder rod chamber keep stable status, prevent flow or flow velocity moment surge, thereby car body is played the effect of vibration damping.Need to prove, on the path of the first suspension oil cylinder A1 rod chamber and the second suspension oil cylinder A2 rod chamber, a flow regulating valve only is set and also can realizes this purpose, and the hydraulic fluid flow rate that two flow regulating valve can be controlled each self-corresponding suspension cylinder rod chamber more timely and effectively is set.
In fact, also can on the rodless cavity path of two suspension oil cylinders flow regulating valve be set, on the rod chamber path of two suspension oil cylinders change-over valve be set, principle of work is same as described above, does not give unnecessary details at this.
Change-over valve can comprise the first change-over valve Y1 and the second change-over valve Y2, the first change-over valve Y1 and the second change-over valve Y2 all are located on first oil circuit, promptly be located on the path of the first suspension oil cylinder A1 rodless cavity and the second suspension oil cylinder A2 rodless cavity, as shown in Figure 1, the first suspension oil cylinder A1 is communicated with the first change-over valve Y1, the second suspension oil cylinder A2 is communicated with the second change-over valve Y2, by the break-make of two common control access of change-over valve; The oil circuit of first oil circuit between the first change-over valve Y1 and the second change-over valve Y2 can be communicated with fuel tank, second oil circuit also can be communicated with fuel tank, and first oil circuit is equipped with by pass valve C on the path of the oil circuit between the first change-over valve Y1 and the second change-over valve Y2 and second oil circuit and fuel tank.Then when the system overload of suspension hydraulic efficiency pressure system, when promptly the system pressure of first oil circuit or second oil circuit was too high, hydraulic oil can overflow back fuel tank by by pass valve C, reduce system pressure, prevent system overload, thereby can limit suspension hydraulic efficiency pressure system maximum working pressure (MWP), play the effect of safety valve.Two change-over valves are set can be more accurately and two suspension oil cylinders of locking reliably, and under first oil circuit and situation that fuel tank is communicated with, still can realize the function of locking.
The first change-over valve Y1 and the second change-over valve Y2 all can be the bi-bit bi-pass solenoid directional control valves, thereby can control by electric control system, realize automation mechanized operation.As shown in Figure 1, the first change-over valve Y1 and the second change-over valve Y2 all are in power failure state, are in working position down, promptly be in first control position, the oil inlet of two change-over valves and oil outlet disconnect, rodless cavity locking in two suspension oil cylinders, and this moment, suspension system was in the rigidity blocking; When the first change-over valve Y1 and the second change-over valve Y2 all, be in working position, promptly be in second control position, the oil inlet of two change-over valves and oil outlet are communicated with, rodless cavity is communicated with rod chamber in two suspension oil cylinders, and this moment, suspension system was in the elastic carrier state.
The first throttle valve B1 and the first change-over valve Y1 can be the first transfer valve E1 that synthesizes, and the second flow regulating valve B2 and the second change-over valve Y2 can be the second transfer valve E2 that synthesizes.
Oil circuit between the first change-over valve Y1 and the second change-over valve Y2 is communicated with hydraulic power source, and second oil circuit also is communicated with described hydraulic power source, as shown in Figure 1.When the suspension hydraulic system pressure is too high, part hydraulic oil overflows back fuel tank through by pass valve C, at this moment, hydraulic power source can carry out fluid infusion to the suspension hydraulic efficiency pressure system, promptly to first oil circuit or the second oil circuit fuel feeding, keep the function of suspension hydraulic efficiency pressure system, hydraulic power source can be Hydraulic Pump or energy storage, simple in structure, simple installation.
All reducing valve D can be set on the oil circuit between the first change-over valve Y1 and the second change-over valve Y2 and the path of second oil circuit and hydraulic power source, as shown in Figure 1.The oil inlet of reducing valve D is communicated with hydraulic power source; leaking hydraulic fluid port is communicated with fuel tank; oil outlet is communicated with the suspension hydraulic efficiency pressure system; the oil liquid pressure that oil outlet flows out is controlled in the default scope; the force value that reducing valve D can control the suspension hydraulic efficiency pressure system effectively then is set, the security and stability of protection hydraulic efficiency pressure system.Reducing valve D and by pass valve C can be the pressure valve F that synthesizes, and the valve body of pressure valve F is provided with oil return inlet T, oil inlet P and oil outlet, and oil return inlet T is communicated with fuel tank, and oil inlet P is communicated with hydraulic power source, and oil outlet is communicated with the suspension hydraulic efficiency pressure system.
Please refer to Fig. 2, Fig. 2 is the structural representation of suspension system in a kind of specific embodiment of wheel crane provided by the present invention.
Except above suspension hydraulic efficiency pressure system, the present invention also provides a kind of wheel crane, comprise vehicle frame, back vehicle bridge 1, preceding vehicle bridge 2 and suspension hydraulic efficiency pressure system, the suspension hydraulic efficiency pressure system comprises the first suspension oil cylinder A1 and the second suspension oil cylinder A2, the two ends of the first suspension oil cylinder A1 and the second suspension oil cylinder A2 are connected with vehicle frame and back vehicle bridge 1 respectively, and the suspension hydraulic efficiency pressure system is above-mentioned each described suspension hydraulic efficiency pressure system.Because above-mentioned suspension hydraulic efficiency pressure system has above-mentioned technique effect, the wheel crane with this suspension hydraulic efficiency pressure system also should have identical technique effect, does not give unnecessary details at this.
Can make the middle part and the vehicle frame of back vehicle bridge 1 hinged, jointed shaft 3 is vertical with back vehicle bridge 1.As shown in Figure 2, can connecting panel 11 be set at the middle part of back vehicle bridge 1, process on the connecting panel 11 and the vertical through hole of back vehicle bridge 1, jointed shaft 3 is in through hole, then jointed shaft 3 is vertical with back vehicle bridge 1, and the two ends of jointed shaft 3 connect to ground, and then back vehicle bridge 1 is hinged with vehicle frame, vehicle frame is played certain supporting role, reduced the stressed of suspension oil cylinder.
Preceding vehicle bridge 2 is fixed with vehicle frame, as shown in Figure 2, the link 21 of two places along car body central axis symmetry can be set on preceding vehicle bridge 2, and link 21 and vehicle frame are fixed, and does not have relative motion between then preceding vehicle bridge 2 and the vehicle frame, is in rigid state always.Vehicle frame is hinged with back vehicle bridge 1 and captive joint with preceding vehicle bridge 2, and then on level road, vehicle itself is exactly a level, need not the leveling operation before travelling.
More than a kind of wheel crane provided by the present invention and suspension hydraulic efficiency pressure system thereof are described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. a hoisting crane suspension hydraulic efficiency pressure system comprises the first suspension oil cylinder (A1) and the second suspension oil cylinder (A2), it is characterized in that,
The rodless cavity of the described first suspension oil cylinder (A1) is communicated with by first oil circuit with the rodless cavity of the described second suspension oil cylinder (A2); The rod chamber of the rod chamber of the described first suspension oil cylinder (A1) and the described second suspension oil cylinder (A2) is communicated with by second oil circuit;
Also comprise the change-over valve of being located in described first oil circuit or described second oil circuit, when described change-over valve is in first control position, described first oil circuit or described second oil circuit disconnect, and when described change-over valve was in second control position, described first oil circuit and described second oil circuit all were communicated with.
2. hoisting crane suspension hydraulic efficiency pressure system according to claim 1 is characterized in that described change-over valve is located in described first oil circuit.
3. hoisting crane suspension hydraulic efficiency pressure system according to claim 2 is characterized in that, is provided with first throttle valve (B1) and second flow regulating valve (B2) in described second oil circuit.
4. according to claim 2 or 3 described hoisting crane suspension hydraulic efficiency pressure systems, it is characterized in that, described change-over valve comprises first change-over valve (Y1) and second change-over valve (Y2), and described first change-over valve (Y1) and described second change-over valve (Y2) all are located in described first oil circuit;
Also comprise fuel tank, the oil circuit between described first change-over valve (Y1) and described second change-over valve (Y2) is communicated with described fuel tank, and described second oil circuit is communicated with described fuel tank; Be equipped with by pass valve (C) on the oil circuit between described first change-over valve (Y1) and described second change-over valve (Y2) and the path of described second oil circuit and described fuel tank.
5. hoisting crane suspension hydraulic efficiency pressure system according to claim 4 is characterized in that, the oil circuit between described first change-over valve (Y1) and described second change-over valve (Y2) is communicated with hydraulic power source, and described second oil circuit is communicated with described hydraulic power source.
6. hoisting crane suspension hydraulic efficiency pressure system according to claim 5 is characterized in that, is equipped with reducing valve (D) on the oil circuit between described first change-over valve (Y1) and described second change-over valve (Y2) and the path of second oil circuit and described hydraulic power source.
7. hoisting crane suspension hydraulic efficiency pressure system according to claim 6 is characterized in that described hydraulic power source is energy storage or Hydraulic Pump.
8. wheel crane, comprise vehicle frame, back vehicle bridge (1), preceding vehicle bridge (2) and suspension hydraulic efficiency pressure system, described suspension hydraulic efficiency pressure system comprises the first suspension oil cylinder (A1) and the second suspension oil cylinder (A2), the two ends of described first suspension oil cylinder (A1) and the described second suspension oil cylinder (A2) are connected with described vehicle frame and back vehicle bridge (1) respectively, it is characterized in that described suspension hydraulic efficiency pressure system is each described hoisting crane suspension hydraulic efficiency pressure system of claim 1 to 7.
9. wheel crane according to claim 8 is characterized in that, the middle part and the described vehicle frame of described back vehicle bridge (1) are hinged, and jointed shaft (3) is vertical with described back vehicle bridge (1).
10. wheel crane according to claim 9 is characterized in that, described preceding vehicle bridge (2) is fixed with described vehicle frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105846121A CN102019834A (en) | 2010-12-10 | 2010-12-10 | Wheel crane and suspension hydraulic system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105846121A CN102019834A (en) | 2010-12-10 | 2010-12-10 | Wheel crane and suspension hydraulic system thereof |
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| CN102019834A true CN102019834A (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105846121A Pending CN102019834A (en) | 2010-12-10 | 2010-12-10 | Wheel crane and suspension hydraulic system thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103522865A (en) * | 2013-11-01 | 2014-01-22 | 徐州重型机械有限公司 | Independent suspension system and crane with same |
| CN107696819A (en) * | 2017-11-11 | 2018-02-16 | 吉林大学 | The quasi- zero stiffness suspension system of SA |
| CN110435760A (en) * | 2019-08-09 | 2019-11-12 | 湖南五新隧道智能装备股份有限公司 | A kind of steering hydraulic system and method for correcting error with deviation-correcting function |
| CN110864016A (en) * | 2018-08-27 | 2020-03-06 | 菜鸟智能物流控股有限公司 | Self-locking device, chassis structure, logistics distribution robot and control method |
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| CN2649377Y (en) * | 2003-09-02 | 2004-10-20 | 中国人民解放军63983部队 | Oil-gas suspension hydraulic regulating device |
| CN1662400A (en) * | 2003-03-12 | 2005-08-31 | 丰田自动车株式会社 | Vehicle suspension system |
| CN201900957U (en) * | 2010-12-10 | 2011-07-20 | 徐州重型机械有限公司 | Wheeled crane and suspension hydraulic system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000238999A (en) * | 1999-02-17 | 2000-09-05 | Sumitomonacco Materials Handling Co Ltd | Axle rocking device for fork lift |
| CN1367328A (en) * | 2002-03-15 | 2002-09-04 | 浙江大学 | Vehicle suspension damping active adjustable hydraulic vibration reducer |
| CN1662400A (en) * | 2003-03-12 | 2005-08-31 | 丰田自动车株式会社 | Vehicle suspension system |
| CN2649377Y (en) * | 2003-09-02 | 2004-10-20 | 中国人民解放军63983部队 | Oil-gas suspension hydraulic regulating device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522865A (en) * | 2013-11-01 | 2014-01-22 | 徐州重型机械有限公司 | Independent suspension system and crane with same |
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| CN107696819A (en) * | 2017-11-11 | 2018-02-16 | 吉林大学 | The quasi- zero stiffness suspension system of SA |
| CN110864016A (en) * | 2018-08-27 | 2020-03-06 | 菜鸟智能物流控股有限公司 | Self-locking device, chassis structure, logistics distribution robot and control method |
| CN110435760A (en) * | 2019-08-09 | 2019-11-12 | 湖南五新隧道智能装备股份有限公司 | A kind of steering hydraulic system and method for correcting error with deviation-correcting function |
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Application publication date: 20110420 |