WO2012083663A1 - 油气悬挂系统及具有该系统的轮式车辆 - Google Patents
油气悬挂系统及具有该系统的轮式车辆 Download PDFInfo
- Publication number
- WO2012083663A1 WO2012083663A1 PCT/CN2011/076378 CN2011076378W WO2012083663A1 WO 2012083663 A1 WO2012083663 A1 WO 2012083663A1 CN 2011076378 W CN2011076378 W CN 2011076378W WO 2012083663 A1 WO2012083663 A1 WO 2012083663A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- oil
- suspension cylinder
- port
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
- B60G17/0416—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics regulated by varying the resiliency of hydropneumatic suspensions
- B60G17/0432—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics regulated by varying the resiliency of hydropneumatic suspensions by varying the number of accumulators connected to the hydraulic cylinder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
- B60G21/06—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected fluid
- B60G21/073—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected fluid between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
Definitions
- the present invention relates to an oil and gas suspension system for a wheeled vehicle, and to a wheeled vehicle having the oil and gas suspension system.
- the invention is particularly applicable to multi-axle vehicles in which at least one pair of suspension cylinders cooperate. Background technique
- the oil and gas suspension is a suspension device integrating the elastic element and the damper. It overcomes the linear characteristics of the leaf spring and is applied to the construction vehicle. It has good vibration damping performance, smoothness and vehicle running stability, and can realize the height of the vehicle body. Adjustability.
- oil and gas suspension In the existing wheeled vehicle oil and gas suspension technical solutions, there are both independent oil and gas suspensions and connected oil and gas suspensions, and both have their advantages and disadvantages. For example, in a self-unloading truck, a free-standing oil and gas suspension is generally used, and a connected oil and gas suspension is generally used on an all-terrain crane.
- the independent oil and gas suspension has better steering performance and poor ride comfort; while the connected oil and gas suspension has better ride comfort and poor steering performance; when the vehicle body is loaded with heavy load and slow running, the oil and gas suspension needs rigid locking function; In the case of obstacles, the oil and gas suspension requires a vehicle height adjustment function to improve the passing ability. Therefore, it is necessary to design a complete oil and gas suspension system to achieve a variety of suspension modes to meet different road requirements.
- China Invention Patent Application No. CN101618669 discloses an oil and gas suspension control loop that uses a two-position two-way valve to control the rodless suspension of the same side suspension cylinder The communication relationship between the cavity and the accumulator to achieve rigid and flexible conversion of the suspension system.
- the rod chamber of each suspension cylinder communicates with the accumulator on its opposite side for greater roll stiffness.
- the two-position two-way valve is used to control the connection relationship between the pressure oil passage and the return oil passage and the rodless cavity of the suspension cylinder, respectively. Realize the lifting control of the body.
- This oil and gas suspension enables body lift control under load-bearing conditions and enables flexible and rigid suspension support in road travel mode.
- the suspension cylinder is connected to the accumulator, and the oil enters the accumulator when the vehicle body is raised by the suspension cylinder.
- This existing oil and gas suspension control circuit must passively retract the suspension cylinder by the weight of the vehicle, and the active axle rise and fall cannot be achieved in the non-load bearing state.
- this oil and gas suspension technology has fewer road driving modes and cannot meet the requirements of various complicated road traffic conditions.
- One technical problem to be solved by the present invention is to provide an oil and gas suspension system capable of realizing active axle lifting and lowering in a non-load bearing state and a wheeled vehicle having the same.
- Another technical problem to be solved by the present invention is to provide an oil and gas suspension device capable of adapting to different road working conditions, which is used for improving the ride comfort, stability and passing performance of a vehicle to meet various road working conditions. .
- an oil and gas suspension system comprising: a left suspension cylinder and a right suspension cylinder, respectively having a rod cavity and a rodless cavity, characterized in that the oil and gas suspension system
- the utility model further comprises: a left reversing valve and a right reversing valve, all of which are three-position four-way valves, respectively having a first working oil port, and the first working oil ports of the left reversing valve and the right reversing valve are respectively connected to the left suspension cylinder
- the right suspension cylinder has a rod cavity circuit; the second working port, the left working port of the left reversing valve and the right reversing valve are respectively connected to the rodless cavity circuit of the left suspension cylinder and the right suspension cylinder; the pressure port , connected to the pressure oil source; and the oil return port, connected to the fuel tank, the first hydraulic lock structure is connected between the left suspension cylinder and the left reversing valve; the second
- the first hydraulic lock structure includes a first hydraulic control check valve and a second hydraulic control one-way
- the first pilot operated check valve is connected between the rod chamber of the left suspension cylinder and the first working port of the left reversing valve through the rod chamber oil passage of the left suspension cylinder, and the second pilot operated check valve passes
- the rodless chamber oil passage of the left suspension cylinder is connected between the rodless chamber of the left suspension cylinder and the second working port of the left reversing valve
- the second hydraulic lock structure comprises a third pilot operated check valve and a fourth hydraulic control a one-way valve, wherein the third hydraulically controlled check valve is connected between the rod chamber of the right suspension cylinder and the first working oil port of the right reversing valve through the rod chamber oil passage of the right suspension cylinder, the fourth hydraulic control unit
- the valve is connected between the rodless chamber of the right suspension cylinder and the second working port of the right reversing valve through the rodless chamber oil passage of the right suspension cylinder.
- the hydraulic control port of the first pilot operated check valve is connected to the second working port of the left reversing valve, and the hydraulic control port of the second pilot operated check valve is connected to the first working port of the left reversing valve
- the hydraulic control port of the third pilot operated check valve is connected to the second working port of the right reversing valve, and the hydraulic control port of the fourth pilot operated check valve is connected to the first working port of the right reversing valve.
- the oil and gas suspension system further includes: a first on-off valve, the first end is connected to the rodless cavity oil path of the left suspension cylinder through the first node, and the second end is connected to the rod cavity of the right suspension cylinder through the second node
- the second on-off valve the first end is connected to the rod-shaped oil passage of the left suspension cylinder through the third node, and the second end is connected to the rod-free oil passage of the right suspension cylinder through the fourth node.
- the oil and gas suspension system further comprises: a third on-off valve connected between the rod chamber oil passage and the rodless chamber oil passage of the left suspension cylinder; the fourth on-off valve connected to the rod chamber of the right suspension cylinder Between the oil circuit and the rodless oil circuit.
- the oil and gas suspension system further comprises: a left accumulator connected to the rodless cavity oil path of the left suspension cylinder through the fifth node; and the right accumulator connected to the rodless cavity oil path of the right suspension cylinder through the sixth node.
- the oil and gas suspension system further includes: a fifth on-off valve connected between the left accumulator and the fifth node; and a sixth on-off valve connected between the right accumulator and the sixth node.
- the oil and gas suspension system further includes: a control unit coupled to the left reversing valve and the right reversing valve to control the operation of the left reversing valve and the right reversing valve.
- control unit is further connected with the first on-off valve, the second on-off valve, the third on-off valve, the fourth on-off valve, the fifth on-off valve, and the sixth on-off valve to issue corresponding passages Out of control Instruction.
- the oil and gas suspension system further includes: a first position sensor disposed on the left suspension cylinder for detecting a current position of the left suspension cylinder; and a second position sensor disposed on the right suspension cylinder for detecting the right suspension cylinder
- the current position, the control unit issues a corresponding control command based on a position signal from the first position sensor regarding the left suspension cylinder and a position signal from the second position sensor regarding the right suspension cylinder.
- control unit controls the oil and gas suspension system to perform the selection of the road running mode when both the left reversing valve and the right reversing valve are in the first state.
- the road driving mode includes: a cross-connect mode, wherein the first on-off valve, the second on-off valve, the fifth on-off valve, and the sixth on-off valve are in an on state, and the third on-off valve and The fourth on-off valve is in an open state; the single-side independent connection mode, wherein the third on-off valve, the fourth on-off valve, the fifth on-off valve, and the sixth on-off valve are in an on state, and at the same time The on-off valve and the second on-off valve are in an open state; a fully connected mode, wherein the first on-off valve, the second on-off valve, the third on-off valve, the fourth on-off valve, the fifth on-off valve, And the sixth on-off valve are both in an on state; and a lockout mode, wherein the first on-off valve, the second on-off valve, the third on-off valve, the fourth on-off valve, the fifth on-off valve, and the The six-way shut-off valve is in the open state.
- the left suspension cylinder and the right suspension cylinder respectively include a plurality of suspension cylinders arranged in parallel.
- a wheeled vehicle comprising the oil and gas suspension system of any one of claims 1-12.
- Two three-position four-way reversing valves are respectively connected with the left suspension cylinder and the right suspension cylinder.
- the axle can be actively lifted instead of passively retracting the cylinder by the weight of the vehicle. In this way, the axle can be lifted by oil pressure after the crane is hit with the legs, improving the maintainability of the chassis.
- the left and right suspension cylinders can realize the lifting control function of the suspension cylinders on both sides through the corresponding reversing valve and displacement sensor, so as to realize the attitude adjustment of the vehicle body; the left and right suspension cylinders can be connected independently on one side or on the other. Cross-connected, you can also do it completely Connection, at the same time, the rigid locking of the left and right suspension cylinders is achieved by cutting off the connection of the accumulator to the cylinder. Therefore, at least four road driving modes can be realized. In this way, the invention adopts a plurality of on-off valves to realize cross-connecting, full communication, single-side independent connection and rigidly locking four road driving modes, thereby improving road adaptability.
- FIG. 1 is a hydraulic schematic diagram of an oil and gas suspension system according to a first embodiment of the present invention, showing a hydraulic principle of a single bridge suspension.
- FIG. 2 is a hydraulic schematic diagram of an oil and gas suspension system according to a second embodiment of the present invention, showing a hydraulic principle implementation diagram of a two-bridge suspension.
- FIG. 3( a ), FIG. 3 ( b ), FIG. 3 ( c ), and FIG. 3 ( d ) are schematic diagrams showing the four suspension modes of the second embodiment of the present invention, respectively showing the cross-connect mode and the complete communication.
- the mode, the one-sided independent connection mode, and the connection state of the rigid lock mode are also applicable to the first embodiment.
- the oil and gas suspension device for a wheeled vehicle provided by the embodiment includes a left reversing valve 1 and a right reversing valve 2 , and the first hydraulic control Check valve 3, second hydraulic control check valve 4, third hydraulic control check valve 5, fourth hydraulic control check valve 6, first on-off valve 7, second on-off valve 8, third on-off Valve 9, fourth on-off valve 10, fifth on-off valve 15, sixth on-off valve 16, left suspension cylinder 11, right suspension cylinder 12, left accumulator 17, right accumulator 18, and various oil passages Connection composition.
- a first displacement sensor 13 and a second displacement sensor 14 are mounted on the suspension cylinder for detecting the current position of the hanging oil rainbow.
- the left suspension cylinder 11 and the right suspension cylinder 12 respectively have a rod cavity and a rodless cavity
- the left reversing valve 1 and the right reversing valve 2 are three-position four-way valves, respectively having a first working port and a second port.
- a pressure port connected to the pressure oil source and a return port connected to the fuel tank;
- the first pilot check valve 3 and the second pilot check valve 4 form a first hydraulic lock structure, wherein the first hydraulic control unit
- the valved valve 3 is connected between the rod chamber of the left suspension cylinder 11 and the first working port of the left reversing valve 1 through the rod chamber oil passage of the left suspension cylinder 11, and the second pilot operated check valve 4 is suspended by the left side.
- the rodless chamber oil passage of the oil cylinder 11 is connected between the rodless chamber of the left suspension cylinder 11 and the second working oil port of the left reversing valve 1; the third pilot operated check valve 5 and the fourth pilot operated check valve 6 Forming a second hydraulic lock structure, wherein the third pilot operated check valve 5 is connected to the rod chamber of the right suspension cylinder 12 and the first working port of the right reversing valve 2 through the rod chamber oil passage of the right suspension cylinder 12 Between the fourth pilot operated check valve 6 is connected to the rodless cavity of the right suspension cylinder 12 through the rodless cavity oil passage of the right suspension cylinder 12 And between the second working oil port of the right reversing valve 2, wherein the left reversing valve 1 and the right reversing valve 2 respectively have a first working port and a second working port connected to the oil return port a state; a second state in which the first working port is connected to the oil return port and the second working port is connected to the pressure port; and the first working port is connected to the pressure port and the second working port
- the hydraulic control port of the first pilot operated check valve 3 is connected to the second working port of the left reversing valve 1, and the hydraulic control port of the second pilot operated check valve 4 is connected to the first working oil of the left reversing valve 1.
- the hydraulic control port of the third pilot operated check valve 5 is connected to the second working port of the right diverter valve 2, and the hydraulic control port of the fourth pilot operated check valve 6 is connected to the first of the right reversing valve 1 Working port.
- the left reversing valve 1 is used for position control of the left suspension cylinder 11 to achieve adjustment of the left vehicle height
- the first pilot operated check valve 3 and the second pilot operated check valve 4 are used for position maintenance of the left suspension cylinder 11 and Prevent leakage of hydraulic oil in the two chambers of the left suspension cylinder 11.
- the two three-position four-way reversing valve combined with the hydraulic control one-way valve can realize the independent control of the single-side cylinder expansion and contraction, and can lift the axle through the oil pressure after the crane is hit with the legs, thereby improving the maintainability of the chassis.
- the pilot operated check valve here prevents system leakage.
- the left reversing valve 1 In the first state, the left reversing valve 1 is in the neutral position, the reversing valve working port is connected to the returning oil T port, and the left suspension cylinder 11 is in the first pilot operated check valve 3 and the second Under the action of the hydraulic control check valve 4, it is in the position holding state; in the second state, the left reversing valve 1 is in the left position, and the P port oil passes through the left reversing valve 1 and the second pilot operated check valve 4 , the left suspension cylinder 11 has no rod cavity, and the second hydraulic control check valve 4 inlet oil pressure opens the first hydraulic control check valve 3, and the left suspension cylinder 11 has a rod cavity through the first hydraulic control check valve 3 and left The reversing valve 1 realizes oil return, so that the left suspension cylinder 11 is extended, so the left body height is raised; in the third state, the left reversing valve 1 is in the right position, and the P port is reversing through the left direction.
- valve 1 and the first pilot operated check valve 3 reach the left suspension cylinder 11 with a rod cavity, and the first hydraulic control check valve 3 inlet oil pressure opens the second hydraulic control check valve 3, and the left suspension cylinder 11 has no rod cavity Refueling is achieved by the second pilot operated check valve 3 and the left reversing valve 1, so that the left suspension cylinder 11 is retracted, so the left body height is lowered. .
- the right reversing valve 2 is used for position control of the left suspension cylinder 12, thereby realizing adjustment of the right vehicle height, and the third pilot operated check valve 5 and the fourth pilot operated check valve 6 are used for maintaining the position of the right suspension cylinder 12 And prevent the two-chamber hydraulic oil from leaking from the left suspension cylinder 12.
- the right reversing valve 2 In the first state, the right reversing valve 2 is in the neutral position, the reversing valve working port is connected to the returning oil T port, the left suspension cylinder 12 is in the third hydraulically controlled check valve 5 and the fourth Under the action of the hydraulic control check valve 6, it is in the position holding state; in the second state, the right reversing valve 2 is in the left position, and the P port oil passes through the right reversing valve 2 and the fourth hydraulically controlled check valve 6 , reaching the rodless cavity of the right suspension cylinder 12, and the fourth hydraulic control check valve 6 inlet hydraulic pressure opens the third hydraulic control check valve 5, the right suspension cylinder 12 has a rod cavity through the third hydraulically controlled check valve 5 and right
- the reversing valve 2 realizes oil return, so that the left suspension cylinder 12 is extended, so the height of the right body is increased; in the third state, the right reversing valve 2 is in the right position, and the P port is reversing through the right.
- the first displacement sensor 13 is used for position detection of the left suspension cylinder 11, and the second displacement sensor 14 is used for position detection of the right suspension cylinder 12, and the left reversing valve 1 and the right switch are detected by the detected position signal.
- the valve 2 is controlled to achieve control and adjustment of the height and posture of the vehicle body.
- the left and right vehicle heights can be completely independent adjusted, thereby improving the passing performance, such as lowering the vehicle height when passing through the culvert; increasing the vehicle when passing the gully high.
- a vehicle with vertical leg support such as an all-terrain crane
- the left reversing valve 1 and the right reversing valve 2 are actively lifted (not through the left)
- the vehicle heavy compression suspension cylinder is passively realized, thereby improving the maintainability of the vehicle chassis; adopting the first hydraulic control check valve 3, the second hydraulic control check valve 4, the third hydraulic control check valve 5, and the fourth hydraulic control list To valve 6, ensure that the system is leak free.
- the left reversing valve 1 and the right reversing valve 2 are both in the first state.
- the first on-off valve 7, the second on-off valve 8, the third on-off valve 9, the fourth on-off valve 10, the fifth on-off valve 15, and the sixth on-off valve 16 According to different road conditions, at least four road driving modes can be realized.
- the first end of the first on-off valve 7 is connected to the rodless chamber oil passage of the left suspension cylinder 11 through the first node N1, and the second end is connected to the rod chamber oil passage of the right suspension cylinder 12 through the second node N2;
- the first end of the two-way shut-off valve 8 is connected to the rod-shaped oil passage of the left suspension cylinder 11 through the third node N3, and the second end is connected to the rod-free oil passage of the right suspension cylinder 12 through the fourth node N2.
- the third on-off valve 9 is connected between the rod chamber oil passage and the rodless chamber oil passage of the left suspension cylinder 11;
- the fourth on-off valve 10 is connected to the rod chamber oil passage and the rodless chamber oil of the right suspension cylinder 12 Between the roads.
- the left accumulator 17 is connected to the rodless chamber oil passage of the left suspension cylinder 11 through the fifth node N5; the right accumulator 18 is connected to the rodless chamber oil passage of the right suspension cylinder 12 through the sixth node N6.
- the fifth on-off valve 15 is connected to the left accumulator 17 Between the fifth node N5 and the sixth on-off valve 16, connected between the right accumulator 18 and the sixth node N6.
- the first on-off valve 7 , the second on-off valve 8 , the fifth on-off valve 15 , and the sixth on-off valve 16 are turned on.
- the third on-off valve 9 and the fourth on-off valve 10 are in the off state.
- the rodless chamber of the left suspension cylinder 11 communicates with the left accumulator 17 through the fifth on-off valve 15, while the rodless chamber of the left suspension cylinder 11 communicates through the first on-off valve 7 to the right suspension cylinder 12 having a rod cavity;
- the rodless chamber of the cylinder 12 communicates with the right accumulator 18 through the sixth on-off valve 16, while the rodless chamber of the right suspension cylinder 12 communicates with the left suspension cylinder 11 through the second on-off valve 8 to have a rod chamber.
- the rodless cavity of the left suspension cylinder 11 and the right suspension cylinder 12 have a rod cavity and the left accumulator 17 are connected, and at the same time, the rodless cavity of the right suspension cylinder 12 and the left suspension cylinder 11 have a rod cavity and a right accumulator 18 Connected. This mode is cross-connected.
- the third on-off valve 9 , the fourth on-off valve 10 , the fifth on-off valve 15 , and the sixth on-off valve 16 are connected.
- the first on-off valve 7 and the second on-off valve 8 are in the off state at the same time.
- the rodless chamber of the left suspension cylinder 11 communicates with the left accumulator 17 through the fifth on-off valve 15, while the rodless chamber of the left suspension cylinder 11 communicates with the left suspension cylinder 11 through the third on-off valve 9;
- the rodless chamber of the cylinder 12 communicates with the right accumulator 18 through the sixth on-off valve 16, while the rodless chamber of the right suspension cylinder 12 communicates with the rod chamber of the right suspension cylinder 12 through the fourth on-off valve 10.
- the rodless cavity of the left suspension cylinder 11 communicates with the left accumulator 17 through the fifth on-off valve 15, and the rodless cavity of the left suspension cylinder 11 communicates with the left suspension cylinder 11 through the third on-off valve 9 with a rod cavity, and the left suspension
- the rodless chamber of the cylinder 11 communicates with the right suspension cylinder 12 through the first on-off valve 7 to have a rod cavity; the rodless chamber of the right suspension cylinder 12 communicates with the right accumulator 18 through the sixth on-off valve 16, and the right suspension cylinder 12 passes through the rodless chamber Fourth on-off valve
- the 10 connected right suspension cylinder 12 has a rod cavity, and at the same time, the rodless chamber of the right suspension cylinder 12 communicates with the left suspension cylinder 11 through the second on-off valve 8 to have a rod cavity.
- the five-way shut-off valve 15 and the sixth on-off valve 16 are all in an open state.
- the left suspension cylinder 11 has no rod chamber and the rod chamber
- the right suspension cylinder 12 has no rod chamber and the rod chamber are closed, and both are disconnected from the left accumulator 17 and the right accumulator 18.
- This mode is the lockout mode.
- the first hydraulic control check valve 3, the second hydraulic control check valve 4, the third hydraulic control check valve 5, and the fourth hydraulic control check valve 6 will be the left suspension cylinder 11 and the right
- the suspension cylinder 12, the left accumulator 17, the right accumulator 18, and the oil in the line are separated from the tank to prevent hydraulic oil from leaking.
- the advantage of using the above solution is that the oil and gas suspension device can better improve the ride comfort, stability and passing performance of the vehicle to meet various road working conditions.
- the left and right suspension cylinders can realize the lifting control function of the suspension cylinders on both sides through the corresponding reversing valve and displacement sensor, thereby realizing the attitude adjustment of the vehicle body; the left and right suspension cylinders can be connected independently or cross-connected on one side. It is also possible to make a complete connection, and at the same time, the rigid locking of the left and right suspension cylinders is achieved by cutting off the connection of the accumulator to the cylinder. Therefore, at least four road driving modes can be realized. At least four road driving modes can be realized by switching, thereby improving vehicle road adaptability; in the multi-bridge suspension system, different modes can be comprehensively considered to obtain different suspension characteristics.
- Fig. 2 shows the hydraulic principle diagram of the second embodiment, which is based on the principle of the two-shaft oil and gas suspension hydraulic action of the two pairs of cylinders.
- two left suspension cylinders 11 and 19, two right suspension cylinders 12 and 20, are included.
- Two left suspension cylinders and two right suspension cylinders are respectively arranged in parallel, and the rod cylinders are connected to each other between the suspension cylinders arranged in parallel, and the rodless chambers are connected to each other.
- the hydraulic principle and working mode of the multi-axis cylinder are substantially the same as those of the first embodiment described above, and are not described herein again.
- the implementation principle is completely the same as that of the second embodiment, and therefore all of them are within the scope of the patent protection.
- the above-described oil and gas suspension system is mounted on the axle of the wheeled vehicle of the present invention, and various suspension characteristics and road running modes of the present invention can be realized.
- the wheeled vehicle can be various construction machines such as cranes and the like.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Description
油气悬挂系统及具有该系统的轮式车辆 本申请要求于 2010年 12月 20 日提交中国专利局, 申请号为 201010597697.7, 发明名称为 "油气悬挂系统及具有该系统的轮式车 辆"的中国专利申请的优先权,其全部内容通过引用结合在本申请中。 技术领域
本发明涉及一种轮式车辆的油气悬挂系统,并涉及具有该油气悬 挂系统的轮式车辆。本发明尤其适用于至少一对悬挂油缸共同作用的 多轴轮式车辆。 背景技术
油气悬挂是集弹性元件和减振器于一体的悬挂装置,克服了钢板 弹簧的线性特征, 应用于工程车辆, 具有良好的减振性能、 平顺性和 车辆行驶稳定性, 并且能实现车身高度的可调性。 现有轮式车辆油气 悬挂技术方案中, 既有独立式的油气悬挂, 也有连通式的油气悬挂, 而两者各有其优缺点。 比如在自卸装载车上一般采用独立式油气悬 挂, 在全地面起重机上一般采用连通式油气悬挂。 独立式的油气悬挂 转向性能较好, 平顺性较差; 而连通式油气悬挂平顺性较好, 转向性 能较差; 车体载荷很大并緩慢行驶时, 油气悬挂需要刚性闭锁功能; 通过涵洞或障碍时, 油气悬挂需要车高调整功能提高通过能力。 因此 需要设计一套完善的油气悬挂系统,实现多种悬挂模式以适应不同道 路需求。
中国发明专利申请公告号 CN101618669 (专利申请号: 200810125285.6, 申请日: 2008年 6月 30日)披露了一种油气悬架 控制回路,其采用二位二通阀控制同侧悬架油缸的无杆腔与蓄能器的 连通关系, 以实现悬架系统的刚性柔性转换。每个悬架油缸的有杆腔 与其相对侧的蓄能器连通, 以获得较大的侧倾刚度。 采用二位二通阀 分别控制压力油路和回油油路与悬架油缸无杆腔之间的连通关系,以
实现车身的升降控制。这种油气悬架可以实现在承重状态下的车身升 降控制, 并能实现道路行驶模式下的柔性和刚性悬挂支撑。
然而, 在该油气悬挂技术中, 悬挂油缸与蓄能器连接, 通过悬挂 油缸升高车身时油液进入蓄能器。这种现有的油气悬挂控制回路必须 通过车重使悬挂油缸被动缩回,在非承重状态不能实现车桥的主动升 降。 另外, 这种油气悬挂技术的道路行驶模式较少, 不能满足各种复 杂的道路通行条件的要求。
发明内容
本发明所要解决的一个技术问题是提供一种能够在非承重状态 实现车桥主动升降的油气悬挂系统及具有该系统的轮式车辆。
本发明需要解决的另一个技术问题是提供一种能够适应不同道 路工况需求的油气悬挂装置, 该装置用于改善车辆行驶时的平顺性, 稳定性以及通过性能, 满足多种道路工况需求。
为解决上述至少一个技术问题, 根据本发明的一个方面, 提供了 一种油气悬挂系统, 包括: 左悬挂油缸和右悬挂油缸, 分别具有有 杆腔和无杆腔, 其特征在于, 油气悬挂系统还包括: 左换向阀和右换 向阀, 均为三位四通阀, 分别具有第一工作油口, 左换向阀和右换向 阀的第一工作油口分别连接到左悬挂油缸和右悬挂油缸的有杆腔回 路; 第二工作油口, 左换向阀和右换向阀的第二工作油口分别连接到 左悬挂油缸和右悬挂油缸的无杆腔回路; 压力油口, 与压力油源连接 的; 以及回油口, 与油箱连接, 第一液压锁结构, 连接在左悬挂油缸 与左换向阀之间; 第二液压锁结构, 连接在右悬挂油缸与右换向阀之 间, 其中, 左换向阀和右换向阀分别具有使第一工作油口和第二工作 油口均连接到回油口的第一状态;使第一工作油口连接到回油口并使 第二工作油口连接到压力油口的第二状态;以及使第一工作油口连接 到压力油口并使第二工作油口连接到回油口的第三状态。
进一步地,第一液压锁结构包括第一液控单向阀和第二液控单向
阀,第一液控单向阀通过左悬挂油缸的有杆腔油路连接在左悬挂油缸 的有杆腔和左换向阀的第一工作油口之间,第二液控单向阀通过左悬 挂油缸的无杆腔油路连接在左悬挂油缸的无杆腔和左换向阀的第二 工作油口之间;第二液压锁结构包括第三液控单向阀和第四液控单向 阀,其中第三液控单向阀通过右悬挂油缸的有杆腔油路连接在右悬挂 油缸的有杆腔和右换向阀的第一工作油口之间,第四液控单向阀通过 右悬挂油缸的无杆腔油路连接在右悬挂油缸的无杆腔和右换向阀的 第二工作油口之间。
进一步地,第一液控单向阀的液控端口连接至左换向阀的第二工 作油口, 第二液控单向阀的液控端口连接至左换向阀的第一工作油 口; 第三液控单向阀的液控端口连接至右换向阀的第二工作油口, 第 四液控单向阀的液控端口连接至右换向阀的第一工作油口。
进一步地, 油气悬挂系统还包括: 第一通断阀, 第一端通过第一 节点连接在左悬挂油缸的无杆腔油路上,第二端通过第二节点连接在 右悬挂油缸的有杆腔油路上; 第二通断阀, 第一端通过第三节点连接 在左悬挂油缸的有杆腔油路上,第二端通过第四节点连接在右悬挂油 缸的无杆腔油路上。
进一步地, 油气悬挂系统还包括: 第三通断阀, 连接在左悬挂油 缸的有杆腔油路和无杆腔油路之间; 第四通断阀, 连接在右悬挂油缸 的有杆腔油路和无杆腔油路之间。
进一步地, 油气悬挂系统还包括: 左蓄能器, 通过第五节点连接 在左悬挂油缸的无杆腔油路上;右蓄能器通过第六节点连接在右悬挂 油缸的无杆腔油路上。
进一步地, 油气悬挂系统还包括: 第五通断阀, 连接在左蓄能器 和第五节点之间; 第六通断阀, 连接在右蓄能器和第六节点之间。
进一步地, 油气悬挂系统还包括: 控制单元, 与左换向阀和右换 向阀连接, 以控制左换向阀和右换向阀的操作。
进一步地,控制单元还与第一通断阀、第二通断阀、第三通断阀、 第四通断阀、 第五通断阀、 和第六通断阀连接, 以发出相应的通断控
制指令。
进一步地, 油气悬挂系统还包括: 第一位置传感器, 设置在左悬 挂油缸上, 用于检测左悬挂油缸的当前位置; 第二位置传感器, 设置 在右悬挂油缸上, 用于检测右悬挂油缸的当前位置, 控制单元基于来 自第一位置传感器的有关左悬挂油缸的位置信号和来自第二位置传 感器的有关右悬挂油缸的位置信号, 发出相应的控制指令。
进一步地,控制单元在左换向阀和右换向阀均处于第一状态下控 制油气悬挂系统执行道路行驶模式的选择。
进一步地, 道路行驶模式包括: 交叉连通模式, 其中, 第一通断 阀、 第二通断阀、 第五通断阀、 和第六通断阀处于接通状态, 同时第 三通断阀和第四通断阀处于断开状态; 单侧独立连接模式, 其中, 第 三通断阀、 第四通断阀、 第五通断阀、 和第六通断阀处于接通状态, 同时第一通断阀和第二通断阀处于断开状态; 完全连通模式, 其中, 第一通断阀、 第二通断阀、 第三通断阀、 第四通断阀、 第五通断阀、 和第六通断阀均处于接通状态; 以及闭锁模式, 其中, 第一通断阀、 第二通断阀、 第三通断阀、 第四通断阀、 第五通断阀、 和第六通断阀 均处于断开状态。
进一步地, 在该油气悬挂系统中, 左悬挂油缸和右悬挂油缸分别 包括并联布置的多个悬挂油缸。
根据本发明的另一方面, 提供了一种轮式车辆, 其特征在于, 包 括权利要求 1-12中任一项所述的油气悬挂系统。
本发明具有以下有益效果:
1、 采用两个三位四通换向阀分别与左悬挂油缸和右悬挂油缸的 连接, 通过控制换向阀的位置, 可以实现车桥主动提升, 而不是通过 车重使油缸被动缩回, 这样, 可以在起重机打好支腿后, 通过油压将 车桥提起, 改善底盘可维护性。
2、 左、 右悬挂油缸通过相应的换向阀和位移传感器可以实现两 侧悬挂油缸的升降控制功能, 从而实现车体姿态调整; 左、 右悬挂油 缸既可以进行单侧独立连接, 也可以进行交叉连通, 还可以进行完全
连接, 同时, 通过切断蓄能器与油缸的连接实现左、 右悬挂油缸刚性 闭锁。 因此, 可以实现至少四种道路行驶模式。 这样, 本发明采用多 个通断阀可以分别实现交叉连通, 完全连通, 单侧独立连接还有刚性 闭锁四种道路行驶模式, 从而提高了道路适应能力。
3、 采用液控单向阀和通断阀, 有利于实现系统无泄漏。
除了上面所描述的目的、 特征和优点之外, 本发明还有其它的目 的、 特征和优点。 下面将参照图, 对本发明作进一步详细的说明。 附图说明
附图用来提供对本发明的进一步理解, 构成本申请的一部分, 本 发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的 不当限定。 在附图中:
图 1为本发明第一实施例的油气悬挂系统的液压原理图,示出了 一种单桥悬挂的液压原理。
图 2为本发明第二实施例的油气悬挂系统的液压原理图,示出了 一种两桥悬挂的液压原理实施示意图。
图 3 ( a )、 图 3 ( b )、 图 3 ( c )、 图 3 ( d ) 为本发明第二实施例 的四种悬挂模式的筒化示意图, 分别示出了交叉连通模式、 完全连通 模式、单侧独立连接模式以及刚性闭锁模式的连接状态, 其对第一实 施例也适用。
图中, 1. 左换向阀, 2. 右换向阀, 3. 第一液控单向阀, 4. 第二 液控单向阀, 5. 第三液控单向阀, 6. 第四液控单向阀, 7.第一通断 阀, 8. 第二通断阀, 9. 第三通断阀, 10. 第四通断阀, 11. 左悬 挂油缸, 12. 右悬挂油缸, 13.第一位置传感器, 14.第二位置传感器, 15. 第五通断阀, 16. 第六通断阀, 17.左蓄能器, 18.右蓄能器。 具体实施方式
以下结合附图对本发明的实施例进行详细说明,但是本发明可以
由权利要求限定和覆盖的多种不同方式实施。
如图 1所示, 为单桥悬挂的液压原理实施示意图, 本实施例提供 的一种用于轮式车辆的油气悬挂装置, 包括左换向阀 1、右换向阀 2, 第一液控单向阀 3、 第二液控单向阀 4、 第三液控单向阀 5、 第四液 控单向阀 6, 第一通断阀 7、 第二通断阀 8、 第三通断阀 9、 第四通断 阀 10、 第五通断阀 15、 第六通断阀 16, 左悬挂油缸 11、 右悬挂油缸 12, 左蓄能器 17、 右蓄能器 18, 以及各油路连接组成。 在所述的悬 挂油缸上装有第一位移传感器 13、 第二位移传感器 14, 用于检测悬 挂油虹当前位置。
左悬挂油缸 11和右悬挂油缸 12分别具有有杆腔和无杆腔,左换 向阀 1和右换向阀 2均为三位四通阀, 分别具有第一工作油口、 第二 油口、 与压力油源连接的压力油口、 以及与油箱连接的回油口; 第一 液控单向阀 3和第二液控单向阀 4形成第一液压锁结构,其中第一液 控单向阀 3通过左悬挂油缸 11的有杆腔油路连接在左悬挂油缸 11的 有杆腔和左换向阀 1的第一工作油口之间,第二液控单向阀 4通过左 悬挂油缸 11的无杆腔油路连接在左悬挂油缸 11的无杆腔和左换向阀 1的第二工作油口之间; 第三液控单向阀 5和第四液控单向阀 6, 形 成第二液压锁结构, 其中第三液控单向阀 5通过右悬挂油缸 12的有 杆腔油路连接在右悬挂油缸 12的有杆腔和右换向阀 2的第一工作油 口之间, 第四液控单向阀 6通过右悬挂油缸 12的无杆腔油路连接在 右悬挂油缸 12的无杆腔和右换向阀 2的第二工作油口之间, 其中, 左换向阀 1和右换向阀 2分别具有使第一工作油口和第二工作油口均 连接到回油口的第一状态;使第一工作油口连接到回油口并使第二工 作油口连接到压力油口的第二状态;以及使第一工作油口连接到压力 油口并使第二工作油口连接到回油口的第三状态。
第一液控单向阀 3 的液控端口连接至左换向阀 1 的第二工作油 口,第二液控单向阀 4的液控端口连接至左换向阀 1的第一工作油口; 第三液控单向阀 5的液控端口连接至右换向阀 2的第二工作油口,第 四液控单向阀 6的液控端口连接至右换向阀 1的第一工作油口。
左换向阀 1用于左悬挂油缸 11的位置控制, 从而实现对左边车 高的调整, 第一液控单向阀 3和第二液控单向阀 4用于左悬挂油缸 11位置保持和防止左悬挂油缸 11两腔液压油泄漏。
这样, 采用两个三位四通换向阀结合液控单向阀, 能够实现单侧 油缸伸缩独立控制,可以在起重机打好支腿后,通过油压将车桥提起, 改善底盘可维护性。 这里的液控单向阀起防止系统泄漏作用。
左换向阀 1在第一状态下, 左换向阀 1阀芯处于中位, 换向阀工 作油口连通回油 T口, 左悬挂油缸 11在第一液控单向阀 3和第二液 控单向阀 4作用下, 处于位置保持状态; 在第二状态下, 左换向阀 1阀芯处于左位, P口油液通过左换向阀 1和第二液控单向阀 4, 到 达左悬挂油缸 11无杆腔, 同时第二液控单向阀 4进口油压打开第一 液控单向阀 3, 左悬挂油缸 11有杆腔通过第一液控单向阀 3和左换 向阀 1实现回油, 从而使左悬挂油缸 11伸出, 因此左边车体高度升 高; 在第三状态下, 左换向阀 1阀芯处于右位, P口油液通过左换向 阀 1和第一液控单向阀 3, 到达左悬挂油缸 11有杆腔, 同时第一液 控单向阀 3进口油压打开第二液控单向阀 3, 左悬挂油缸 11无杆腔 通过第二液控单向阀 3和左换向阀 1 实现回油, 从而使左悬挂油缸 11缩回, 因此左边车体高度降低。
右换向阀 2, 用于左悬挂油缸 12的位置控制, 从而实现对右边 车高的调整,第三液控单向阀 5和第四液控单向阀 6用于右悬挂油缸 12位置保持和防止左悬挂油缸 12两腔液压油泄漏。
右换向阀 2在第一状态下, 右换向阀 2阀芯处于中位, 换向阀工 作油口连通回油 T口, 左悬挂油缸 12在第三液控单向阀 5和第四液 控单向阀 6作用下, 处于位置保持状态; 在第二状态下, 右换向阀 2 阀芯处于左位, P口油液通过右换向阀 2和第四液控单向阀 6, 到达 右悬挂油缸 12无杆腔, 同时第四液控单向阀 6进口油压打开第三液 控单向阀 5, 右悬挂油缸 12有杆腔通过第三液控单向阀 5和右换向 阀 2实现回油, 从而使左悬挂油缸 12伸出, 因此右边车体高度升高; 在第三状态下, 右换向阀 2阀芯处于右位, P口油液通过右换向阀 2
和第三液控单向阀 5, 到达右悬挂油缸 12有杆腔, 同时第三液控单 向阀 5进口油压打开第四液控单向阀 6, 右悬挂油缸 12无杆腔通过 第四液控单向阀 6和右换向阀 2实现回油, 从而使右悬挂油缸 12缩 回, 因此右边车体高度降低。
所述的第一位移传感器 13, 用于左悬挂缸 11位置检测, 所述的 第二位移传感器 14, 用于右悬挂油缸 12位置检测, 通过检测的位置 信号对左换向阀 1和右换向阀 2进行控制,从而实现对车体高度以及 姿态的控制和调整。
采用上述车高调整方案优势在于: 在不同道路工况下, 左、 右车 高可以实现完全独立调整, 从而提高通过性能, 如在通过涵洞时, 降 低车高; 在通过沟壑时, 增大车高。 此外, 在有垂直支腿支撑的车辆 中 (如全地面起重机), 可以垂直支腿支撑车体时, 通过所述的左换 向阀 1和右换向阀 2主动提升车桥(而不是通过车重压缩悬挂油缸被 动实现), 从而提高车辆底盘可维护性; 采用第一液控单向阀 3、 第 二液控单向阀 4、 第三液控单向阀 5、 第四液控单向阀 6, 确保系统 无泄漏。
车辆在行驶工况下,所述的左换向阀 1和右换向阀 2都处于第一 状态下。 在此状态下, 所述的第一通断阀 7、 第二通断阀 8、 第三通 断阀 9、 第四通断阀 10、 第五通断阀 15、 第六通断阀 16, 根据不同 的道路工况需求, 可以实现至少四种道路行驶模式。
第一通断阀 7的第一端通过第一节点 N1连接在左悬挂油缸 11 的无杆腔油路上, 第二端通过第二节点 N2连接在右悬挂油缸 12的 有杆腔油路上; 第二通断阀 8的第一端通过第三节点 N3连接在左悬 挂油缸 11的有杆腔油路上,第二端通过第四节点 N2连接在右悬挂油 缸 12的无杆腔油路上。第三通断阀 9连接在左悬挂油缸 11的有杆腔 油路和无杆腔油路之间;第四通断阀 10连接在右悬挂油缸 12的有杆 腔油路和无杆腔油路之间。 左蓄能器 17, 通过第五节点 N5连接在左 悬挂油缸 11的无杆腔油路上; 右蓄能器 18通过第六节点 N6连接在 右悬挂油缸 12的无杆腔油路上。 第五通断阀 15连接在左蓄能器 17
和第五节点 N5之间; 第六通断阀 16, 连接在右蓄能器 18和第六节 点 N6之间。
在图 3 ( a )所示的第一种道路行驶模式下,所述的第一通断阀 7、 第二通断阀 8、 第五通断阀 15、 第六通断阀 16处于接通状态, 同时 所述的第三通断阀 9、 第四通断阀 10处于断开状态。 此时, 左悬挂 油缸 11无杆腔通过第五通断阀 15连通左蓄能器 17, 同时左悬挂油 缸 11无杆腔通过第一通断阀 7连通右悬挂油缸 12有杆腔;右悬挂油 缸 12无杆腔通过第六通断阀 16连通右蓄能器 18, 同时右悬挂油缸 12无杆腔通过第二通断阀 8连通左悬挂油缸 11有杆腔。 由此, 实现 左悬挂油缸 11无杆腔与右悬挂油缸 12有杆腔以及左蓄能器 17连通, 同时, 右悬挂油缸 12无杆腔与左悬挂油缸 11有杆腔以及右蓄能器 18连通。 此模式为交叉连通模式。
在如图 3 ( b )所示的第二种道路行驶模式下, 所述的第三通断 阀 9、第四通断阀 10、第五通断阀 15、第六通断阀 16处于接通状态, 同时所述的第一通断阀 7、 第二通断阀 8处于断开状态。 此时, 左悬 挂油缸 11无杆腔通过第五通断阀 15连通左蓄能器 17, 同时左悬挂 油缸 11无杆腔通过第三通断阀 9连通左悬挂油缸 11有杆腔;右悬挂 油缸 12无杆腔通过第六通断阀 16连通右蓄能器 18, 同时右悬挂油 缸 12无杆腔通过第四通断阀 10连通右悬挂油缸 12有杆腔。 由此, 实现左悬挂油缸 11无杆腔与左悬挂油缸 11有杆腔以及左蓄能器 17 连通, 同时, 右悬挂油缸 12无杆腔与右悬挂油缸 12有杆腔以及右蓄 能器 18连通。 此模式为单侧独立连接模式。
在如图 3 ( c )所示的第三种道路行驶模式下, 所述的第一通断 阀 7、 第二通断阀 8、 第三通断阀 9、 第四通断阀 10、 第五通断阀 15、 第六通断阀 16均处于接通状态。 此时, 左悬挂油缸 11无杆腔通过第 五通断阀 15连通左蓄能器 17, 左悬挂油缸 11无杆腔通过第三通断 阀 9连通左悬挂油缸 11有杆腔, 同时左悬挂油缸 11无杆腔通过第一 通断阀 7连通右悬挂油缸 12有杆腔;右悬挂油缸 12无杆腔通过第六 通断阀 16连通右蓄能器 18, 右悬挂油缸 12无杆腔通过第四通断阀
10连通右悬挂油缸 12有杆腔, 同时, 右悬挂油缸 12无杆腔通过第 二通断阀 8连通左悬挂油缸 11有杆腔。 由此, 实现左悬挂油缸 11无 杆腔和有杆腔与右悬挂油缸 12无杆腔和有杆腔以及左蓄能器 17、 右 蓄能器 18完全连通。 此模式为完全连通模式。
在如图 3 ( d )所示的第四种道路行驶模式下, 所述的第一通断 阀 7、 第二通断阀 8、 第三通断阀 9、 第四通断阀 10、 第五通断阀 15、 第六通断阀 16均处于断开状态。 此时, 左悬挂油缸 11无杆腔和有杆 腔, 以及右悬挂油缸 12无杆腔和有杆腔均处于封闭状态, 且均与左 蓄能器 17和右蓄能器 18断开。 此模式为闭锁模式。
上述四种模式下, 所述第一液控单向阀 3、 第二液控单向阀 4、 第三液控单向阀 5、 第四液控单向阀 6将左悬挂油缸 11、 右悬挂油缸 12、 左蓄能器 17、 右蓄能器 18以及管路中的油液与油箱隔开, 防止 液压油泄漏。
采用上述方案优势在于,该油气悬挂装置可以更好地改善车辆行 驶时的平顺性, 稳定性以及通过性能, 满足多种道路工况需求。 左、 右悬挂油缸通过相应的换向阀和位移传感器可以实现两侧悬挂油缸 的升降控制功能, 从而实现车体姿态调整; 左、 右悬挂油缸既可以进 行单侧独立连接,也可以进行交叉连通,还可以进行完全连接, 同时, 通过切断蓄能器与油缸的连接实现左、 右悬挂油缸刚性闭锁。 因此, 可以实现至少四种道路行驶模式。通过切换可以实现至少四种道路行 驶模式, 从而提高了车辆道路适应性; 在多桥悬挂系统中, 可以综合 考虑采用不同模式, 获得不同的悬挂特性。
图 2示出了第二实施例的液压原理图,是基于两对油缸分别作用 的双轴油气悬挂液压原理。 在该实施例中, 包括两个左悬挂油缸 11 和 19, 两个右悬挂油缸 12和 20。 两个左悬挂油缸和两个右悬挂油缸 分别并联布置, 并联布置的悬挂油缸之间有杆腔彼此连通, 无杆腔彼 此连通。这种多轴油缸的液压原理与工作模式与前述第一实施例基本 相同, 在此不再赘述。 对于两轴以上的其他多轴车辆, 其实施原理与 该第二实施例完全相同, 因此均在本专利保护范围之内。
本发明的轮式车辆的车桥上安装上述的油气悬挂系统,可以实现 前述本发明的各种悬挂特性和道路行驶模式。轮式车辆可以是各种工 程机械, 例如起重机等。
以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本 发明的精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应 包含在本发明的保护范围之内。
Claims
1.一种油气悬挂系统, 包括:
左悬挂油缸(11)和右悬挂油缸(12), 分别具有有杆腔和无杆 腔,
其特征在于, 所述油气悬挂系统还包括:
左换向阀 (1)和右换向阀 (2), 均为三位四通阀, 分别具有: 第一工作油口, 所述左换向阀 (1)和右换向阀 (2)的第一工作 油口分别连接到所述左悬挂油缸( 11 )和右悬挂油缸( 12)的有杆腔 回路;
第二工作油口, 所述左换向阀 (1)和右换向阀 (2)的第二工作 油口分别连接到所述左悬挂油缸( 11 )和右悬挂油缸( 12)的无杆腔 回路;
压力油口, 与压力油源连接; 以及
回油口, 与油箱连接,
第一液压锁结构, 连接在所述左悬挂油缸( 11 )与所述左换向阀
(1)之间;
第二液压锁结构, 连接在所述右悬挂油缸( 12)与所述右换向阀
(2)之间,
其中, 所述左换向阀 (1)和右换向阀(2)分别具有使第一工作 油口和第二工作油口均连接到回油口的第一状态;使第一工作油口连 接到回油口并使第二工作油口连接到压力油口的第二状态;以及使第 一工作油口连接到压力油口并使第二工作油口连接到回油口的第三 状态。
2.根据权利要求 1所述的油气悬挂系统, 其特征在于: 所述第一液压锁结构包括第一液控单向阀 (3)和第二液控单向 阀 (4), 其中所述第一液控单向阀 (3)通过所述左悬挂油缸(11) 的有杆腔油路连接在所述左悬挂油缸( 11 )的有杆腔和所述左换向阀 (1)的第一工作油口之间, 所述第二液控单向阀(4)通过所述左悬 挂油缸( 11 )的无杆腔油路连接在所述左悬挂油缸( 11 )的无杆腔和 所述左换向阀 (1) 的第二工作油口之间;
所述第二液压锁结构包括第三液控单向阀 (5)和第四液控单向 阀 (6), 其中所述第三液控单向阀 (5)通过所述右悬挂油缸(12) 的有杆腔油路连接在所述右悬挂油缸( 12)的有杆腔和所述右换向阀 (2)的第一工作油口之间, 所述第四液控单向阀(6)通过所述右悬 挂油缸( 12)的无杆腔油路连接在所述右悬挂油缸( 12)的无杆腔和 所述右换向阀 (2) 的第二工作油口之间。
3.根据权利要求 2所述的油气悬挂系统, 其特征在于:
所述第一液控单向阀 ( 3 ) 的液控端口连接至所述左换向阀 ( 1 ) 的第二工作油口, 所述第二液控单向阀 (4) 的液控端口连接至所述 左换向阀 (1) 的第一工作油口;
所述第三液控单向阀 (5) 的液控端口连接至所述右换向阀 (2) 的第二工作油口, 所述第四液控单向阀 (6) 的液控端口连接至所述 右换向阀 (1) 的第一工作油口。
4.根据权利要求 2所述的油气悬挂系统, 其特征在于: 还包括: 第一通断阀 (7), 第一端通过第一节点 (N1) 连接在所述左悬 挂油缸( 11 )的无杆腔油路上, 第二端通过第二节点(N2)连接在所 述右悬挂油缸(12) 的有杆腔油路上;
第二通断阀 (8), 第一端通过第三节点 (N3) 连接在所述左悬 挂油缸( 11 )的有杆腔油路上, 第二端通过第四节点(N4)连接在所 述右悬挂油缸(12) 的无杆腔油路上。
5.根据权利要求 4所述的油气悬挂系统, 其特征在于: 还包括: 第三通断阀(9), 连接在所述左悬挂油缸(11)的有杆腔油路和 无杆腔油路之间;
第四通断阀 (10), 连接在所述右悬挂油缸(12) 的有杆腔油路 和无杆腔油路之间。
6.根据权利要求 5所述的油气悬挂系统, 其特征在于: 还包括: 左蓄能器( 17),通过第五节点(N5)连接在所述左悬挂油缸( 11 ) 的无杆腔油路上;
右蓄能器( 18 )通过第六节点( N6 )连接在所述右悬挂油缸( 12 ) 的无杆腔油路上。
7.根据权利要求 6所述的油气悬挂系统, 其特征在于: 还包括: 第五通断阀( 15 ), 连接在所述左蓄能器( 17 )和第五节点( N5 ) 之间;
第六通断阀(16), 连接在所述右蓄能器(18)和第六节点(N6) 之间。
8.根据权利要求 7所述的油气悬挂系统, 其特征在于: 还包括: 控制单元, 与所述左换向阀 (1)和右换向阀 (2)连接, 以控制 所述左换向阀 (1)和右换向阀 (2) 的操作。
9.根据权利要求 8所述的油气悬挂系统, 其特征在于:
所述控制单元还与所述第一通断阀(7)、 第二通断阀(8)、 第三 通断阀(9)、第四通断阀(10)、第五通断阀(15)、和第六通断阀(16) 连接, 以发出相应的通断控制指令。
10. 根据权利要求 8或 9所述的油气悬挂系统, 其特征在于: 还包括:
第一位置传感器(13), 设置在所述左悬挂油缸(11)上, 用于 检测所述左悬挂油缸(11) 的当前位置;
第二位置传感器(14), 设置在所述右悬挂油缸(12)上, 用于 检测所述右悬挂油缸(12) 的当前位置,
所述控制单元基于来自所述第一位置传感器( 13 )的有关所述左 悬挂油缸( 11 )的位置信号和来自所述第二位置传感器( 14)的有关 所述右悬挂油缸(11) 的位置信号, 发出相应的控制指令。
11. 根据权利要求 8所述的油气悬挂系统, 其特征在于: 所述控制单元在所述左换向阀( 1 )和右换向阀(2)均处于所述 第一状态下控制所述油气悬挂系统执行道路行驶模式的选择。
12. 根据权利要求 11所述的油气悬挂系统, 其特征在于: 所述道路行驶模式包括: 交叉连通模式, 其中, 所述第一通断阀 (7)、 第二通断阀 (8)、 第五通断阀 (15)、 和第六通断阀 (16)处于接通状态, 同时所述第 三通断阀 (9)和第四通断阀 (10)处于断开状态;
单侧独立连接模式,其中,所述第三通断阀( 9 )、第四通断阀( 10 )、 第五通断阀 (15)、 和第六通断阀 (16)处于接通状态, 同时所述第 一通断阀 (7)和第二通断阀 (8)处于断开状态;
完全连通模式, 其中, 所述第一通断阀 (7)、 第二通断阀 (8)、 第三通断阀 (9)、 第四通断阀 (10)、 第五通断阀 (15)、 和第六通断 阀 (16) 均处于接通状态; 以及
闭锁模式, 其中, 所述第一通断阀 (7)、 第二通断阀 (8)、 第三 通断阀(9)、第四通断阀(10)、第五通断阀(15)、和第六通断阀(16) 均处于断开状态。
13. 根据权利要求 1-9 中任一项所述的油气悬挂系统, 其特征 在于:
所述左悬挂油缸( 11 )和右悬挂油缸( 12)分别包括并联布置的 多个悬挂油缸,
14. 一种轮式车辆, 其特征在于, 包括权利要求 1-13中任一项 所述的油气悬挂系统。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105976977A CN102059929B (zh) | 2010-12-20 | 2010-12-20 | 油气悬挂系统及具有该系统的轮式车辆 |
| CN201010597697.7 | 2010-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012083663A1 true WO2012083663A1 (zh) | 2012-06-28 |
Family
ID=43995516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2011/076378 Ceased WO2012083663A1 (zh) | 2010-12-20 | 2011-06-27 | 油气悬挂系统及具有该系统的轮式车辆 |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102059929B (zh) |
| WO (1) | WO2012083663A1 (zh) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105564181A (zh) * | 2015-12-11 | 2016-05-11 | 北京特种机械研究所 | 可变模组的液压悬挂控制系统 |
| WO2018145855A1 (de) * | 2017-02-08 | 2018-08-16 | Hydac Systems & Services Gmbh | Fahrbare arbeitsmaschine und verfahren zum fahrstabilen betreiben derselben |
| WO2020214666A1 (en) * | 2019-04-15 | 2020-10-22 | Tenneco Automotive Operating Company Inc. | Suspension system with multiple working modes |
| CN116181950A (zh) * | 2023-02-23 | 2023-05-30 | 苏州博睿测控设备有限公司 | 一种新型液压执行器手动液压装置 |
| CN121803529A (zh) * | 2026-03-06 | 2026-04-07 | 湖南凯恩利液压机械制造有限公司 | 一种快换电磁阀组及液压系统 |
Families Citing this family (38)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102059929B (zh) * | 2010-12-20 | 2012-07-18 | 三一汽车起重机械有限公司 | 油气悬挂系统及具有该系统的轮式车辆 |
| CN102991296B (zh) * | 2011-09-19 | 2015-03-18 | 北汽福田汽车股份有限公司 | 油气悬挂装置、油气悬架、底盘和车辆 |
| CN102431410B (zh) * | 2011-12-21 | 2013-12-11 | 中联重科股份有限公司 | 车辆的悬挂分组控制系统及悬挂分组控制方法 |
| CN103358850B (zh) * | 2013-06-20 | 2015-10-28 | 三一汽车起重机械有限公司 | 油气悬挂系统和工程车辆 |
| CN103568770B (zh) * | 2013-11-05 | 2015-09-30 | 中联重科股份有限公司 | 车辆悬挂系统及其控制方法 |
| CN103600634B (zh) * | 2013-11-25 | 2015-12-16 | 徐州重型机械有限公司 | 钻机车专用底盘 |
| CN103807227A (zh) * | 2014-01-24 | 2014-05-21 | 大连液压件有限公司 | 重载汽车车桥提升液压系统 |
| CN105539061B (zh) * | 2015-12-21 | 2018-04-13 | 中联重科股份有限公司 | 车辆的油气悬挂系统及具有其的车辆 |
| CN106321533A (zh) * | 2016-08-30 | 2017-01-11 | 宁波中意液压马达有限公司 | 一种并联马达液压驱动系统 |
| CN108001149A (zh) * | 2016-10-31 | 2018-05-08 | 郑州宇通客车股份有限公司 | 一种液压互锁单元及使用该单元的悬架系统、车辆 |
| CN107053986B (zh) * | 2017-01-20 | 2023-06-20 | 徐州徐工汽车制造有限公司 | 一种五轴自卸车油气悬架液压控制系统 |
| CN106900686A (zh) * | 2017-04-12 | 2017-06-30 | 管中林 | 一种具有多功能的打药机 |
| CN107178543A (zh) * | 2017-07-26 | 2017-09-19 | 国电联合动力技术有限公司 | 一种风力发电机组叶轮锁定液压控制系统 |
| CN107466592A (zh) * | 2017-08-28 | 2017-12-15 | 广西柳工机械股份有限公司 | 甘蔗收割机用主动悬架系统 |
| CN108468678A (zh) * | 2018-05-21 | 2018-08-31 | 岭南师范学院 | 一种农业机械车身自平衡的液压控制系统 |
| DE102018112835A1 (de) * | 2018-05-29 | 2019-12-05 | Fsp Fluid Systems Partner Holding Ag | Hydrauliksystem, Hydraulikeinheit, Fahrzeug, Verfahren und Verwendung |
| CN109050192B (zh) * | 2018-07-19 | 2021-05-14 | 燕山大学 | 油气悬挂与主动悬挂切换控制回路 |
| CN109441913B (zh) * | 2018-10-18 | 2020-01-31 | 中联重科股份有限公司 | 悬挂阀、悬挂系统及工程车辆 |
| CN109515100B (zh) * | 2019-01-16 | 2025-01-14 | 徐工集团工程机械股份有限公司 | 油气悬挂系统、车辆及油气悬挂系统的控制方法 |
| CN109677225B (zh) * | 2019-01-25 | 2020-10-27 | 中北大学 | 一种主/被动复合液压悬挂控制策略选择方法 |
| CN109808435B (zh) * | 2019-03-19 | 2024-03-15 | 徐工集团工程机械股份有限公司科技分公司 | 悬架系统和车辆 |
| CN111824048B (zh) * | 2019-04-15 | 2022-08-05 | 比亚迪股份有限公司 | 车辆爆胎的控制方法、装置和车辆 |
| CN111824049B (zh) * | 2019-04-15 | 2022-07-15 | 比亚迪股份有限公司 | 车辆爆胎的控制方法、装置和车辆 |
| CN110497760B (zh) * | 2019-08-07 | 2020-09-18 | 燕山大学 | 主被动双模式可切换车辆悬架系统及其切换方法 |
| CN110789285B (zh) * | 2019-12-06 | 2025-01-14 | 徐工集团工程机械股份有限公司 | 遥控车辆的油气悬架装置、控制方法和遥控车辆 |
| CN111038207B (zh) * | 2019-12-16 | 2021-06-22 | 中联重科股份有限公司 | 油气悬挂模组、油气悬挂系统及车辆 |
| CN111422019A (zh) * | 2020-04-17 | 2020-07-17 | 三一汽车起重机械有限公司 | 一种油气悬挂系统及工程机械 |
| CN111391601A (zh) * | 2020-04-26 | 2020-07-10 | 常州万安汽车部件科技有限公司 | 一种用于多轴车辆的液压互联悬架系统 |
| CN112009193B (zh) * | 2020-09-11 | 2022-05-31 | 泰安航天特种车有限公司 | 一种抗侧倾可调油气悬架液压系统 |
| CN114475201B (zh) * | 2020-11-13 | 2023-07-28 | 宇通客车股份有限公司 | 动力总成悬置装置及使用该动力总成悬置装置的车辆 |
| CN112879487B (zh) * | 2021-01-22 | 2022-10-14 | 广州橙行智动汽车科技有限公司 | 空气弹簧系统、车辆和控制方法 |
| CN113119675B (zh) * | 2021-04-08 | 2025-04-22 | 成都立航科技股份有限公司 | 一种多轮组悬挂控制系统 |
| CN113525009A (zh) * | 2021-06-04 | 2021-10-22 | 湖北优软汽车科技有限公司 | 一种两级压力式单摆臂结构油气悬架系统 |
| CN114619820B (zh) * | 2022-02-28 | 2023-12-01 | 安徽合力股份有限公司 | 基于摆动油缸容积变化的能量回收系统、方法及搬运车 |
| CN115782499A (zh) * | 2022-11-30 | 2023-03-14 | 中国重汽集团济南动力有限公司 | 一种多轴悬架升降液压系统、控制方法及汽车 |
| CN116749692A (zh) * | 2023-03-29 | 2023-09-15 | 徐州重型机械有限公司 | 悬架系统、车辆底盘、车辆和车辆操控方法 |
| EP4585433A1 (en) * | 2024-01-09 | 2025-07-16 | Volvo Construction Equipment AB | Fluid-based suspension system of a vehicle |
| CN119872166B (zh) * | 2025-01-24 | 2025-10-10 | 中联重科股份有限公司 | 用于车辆的悬挂系统及其控制方法和车辆 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2588103Y (zh) * | 2002-11-26 | 2003-11-26 | 张勇 | 节能自锁液控单向多路换向阀 |
| CN1594897A (zh) * | 2004-06-29 | 2005-03-16 | 北汽福田汽车股份有限公司 | 一种自保护大速比液压缸 |
| CN2736315Y (zh) * | 2004-08-21 | 2005-10-26 | 山东临工工程机械有限公司 | 轮式装载机行驶稳定装置 |
| EP1764339A2 (en) * | 2005-09-15 | 2007-03-21 | CNH Italia S.p.A. | Hydraulic arrangement for a lifting arm pivotably mounted on a vehicle |
| JP2009137372A (ja) * | 2007-12-05 | 2009-06-25 | Kubota Corp | 作業車のサスペンション装置 |
| CN101618669A (zh) * | 2008-06-30 | 2010-01-06 | 徐州重型机械有限公司 | 油气悬架控制回路、多轴车辆油气悬架系统及起重机 |
| CN102059929A (zh) * | 2010-12-20 | 2011-05-18 | 三一汽车起重机械有限公司 | 油气悬挂系统及具有该系统的轮式车辆 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63125421A (ja) * | 1986-11-12 | 1988-05-28 | Isuzu Motors Ltd | ハイドロニユ−マチツク・サスペンシヨン装置 |
| JP2625165B2 (ja) * | 1988-08-25 | 1997-07-02 | 日本発条株式会社 | 車両用アンチローリング装置 |
| CN2454171Y (zh) * | 2000-12-07 | 2001-10-17 | 郑州郑工机械集团有限责任公司 | 油气悬挂机构 |
| CN2649377Y (zh) * | 2003-09-02 | 2004-10-20 | 中国人民解放军63983部队 | 油气悬架液压调节装置 |
| CN2759819Y (zh) * | 2004-12-15 | 2006-02-22 | 中国人民解放军63983部队 | 油气悬架控制装置 |
-
2010
- 2010-12-20 CN CN2010105976977A patent/CN102059929B/zh active Active
-
2011
- 2011-06-27 WO PCT/CN2011/076378 patent/WO2012083663A1/zh not_active Ceased
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2588103Y (zh) * | 2002-11-26 | 2003-11-26 | 张勇 | 节能自锁液控单向多路换向阀 |
| CN1594897A (zh) * | 2004-06-29 | 2005-03-16 | 北汽福田汽车股份有限公司 | 一种自保护大速比液压缸 |
| CN2736315Y (zh) * | 2004-08-21 | 2005-10-26 | 山东临工工程机械有限公司 | 轮式装载机行驶稳定装置 |
| EP1764339A2 (en) * | 2005-09-15 | 2007-03-21 | CNH Italia S.p.A. | Hydraulic arrangement for a lifting arm pivotably mounted on a vehicle |
| JP2009137372A (ja) * | 2007-12-05 | 2009-06-25 | Kubota Corp | 作業車のサスペンション装置 |
| CN101618669A (zh) * | 2008-06-30 | 2010-01-06 | 徐州重型机械有限公司 | 油气悬架控制回路、多轴车辆油气悬架系统及起重机 |
| CN102059929A (zh) * | 2010-12-20 | 2011-05-18 | 三一汽车起重机械有限公司 | 油气悬挂系统及具有该系统的轮式车辆 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105564181A (zh) * | 2015-12-11 | 2016-05-11 | 北京特种机械研究所 | 可变模组的液压悬挂控制系统 |
| WO2018145855A1 (de) * | 2017-02-08 | 2018-08-16 | Hydac Systems & Services Gmbh | Fahrbare arbeitsmaschine und verfahren zum fahrstabilen betreiben derselben |
| WO2020214666A1 (en) * | 2019-04-15 | 2020-10-22 | Tenneco Automotive Operating Company Inc. | Suspension system with multiple working modes |
| US12227052B2 (en) | 2019-04-15 | 2025-02-18 | Tenneco Automotive Operating Company, Inc. | Suspension system with multiple working modes |
| CN116181950A (zh) * | 2023-02-23 | 2023-05-30 | 苏州博睿测控设备有限公司 | 一种新型液压执行器手动液压装置 |
| CN121803529A (zh) * | 2026-03-06 | 2026-04-07 | 湖南凯恩利液压机械制造有限公司 | 一种快换电磁阀组及液压系统 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102059929A (zh) | 2011-05-18 |
| CN102059929B (zh) | 2012-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102059929B (zh) | 油气悬挂系统及具有该系统的轮式车辆 | |
| CN102039792B (zh) | 悬挂阀、油气悬架系统及工程车辆 | |
| CN101618669B (zh) | 多轴车辆油气悬架系统及起重机 | |
| CN112009193B (zh) | 一种抗侧倾可调油气悬架液压系统 | |
| CN105365521B (zh) | 悬架阀组、油气悬架控制系统和方法及车辆 | |
| CN103009955B (zh) | 气压可调式油气悬架系统及其气压调节方法和工程车辆 | |
| CN103434363A (zh) | 防俯仰防侧倾液压互联悬架系统 | |
| CN115159350B (zh) | 油气悬挂控制阀和油气悬挂液压控制系统 | |
| CN203513142U (zh) | 汽车起重机及其支腿控制系统 | |
| CN103552439B (zh) | 一种用于多轴重型车辆的油气平衡悬架及其液压控制系统 | |
| CN102003423A (zh) | 一种液压双向锁及设有该液压双向锁的起重机 | |
| CN203655739U (zh) | 拉臂式自装卸装置及具有其的车厢可卸式垃圾车 | |
| WO2025007488A1 (zh) | 多路换向阀、支腿油缸控制系统和汽车起重机 | |
| CN201856597U (zh) | 悬挂阀、油气悬架系统及工程车辆 | |
| CN103358850B (zh) | 油气悬挂系统和工程车辆 | |
| CN215249221U (zh) | 悬挂阀组、悬挂液压系统和全地面起重机 | |
| CN203093658U (zh) | 一种新型油气悬架系统 | |
| CN217374061U (zh) | 悬挂系统及作业机械 | |
| CN108006008B (zh) | 立桅软系统及旋挖钻机 | |
| CN109808435A (zh) | 悬架系统和车辆 | |
| CN116252578A (zh) | 一种油气悬架系统及车辆 | |
| CN105179356B (zh) | 副臂控制阀、副臂液压控制系统及起重机 | |
| CN209649988U (zh) | 悬架系统和车辆 | |
| CN218986281U (zh) | 一种新型一键调平连通式多轴油气悬挂系统 | |
| CN202296849U (zh) | 一种起重机支腿、支腿液压系统及起重机 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11850554 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 11850554 Country of ref document: EP Kind code of ref document: A1 |