阅读说明：本技术 悬挂液压系统和车辆 (Suspension hydraulic system and vehicle ) 是由 周雄 张伟 李核志 于 2019-09-20 设计创作，主要内容包括：本发明提出了一种悬挂液压系统和车辆,其中,悬挂液压系统包括：第一油箱；悬挂油缸,悬挂油缸具有有杆腔和无杆腔；单向阀,单向阀的出口端和入口端分别与有杆腔和第一油箱连通；阻尼阀,阻尼阀的两端分别与有杆腔和第一油箱连通；蓄能器,通过第一管路与无杆腔连通。通过本发明的技术方案,将车辆自带的油箱接入悬挂液压系统,直接利用油箱和油箱内的油液进行散热,散热效率高,有利于保证悬挂液压系统的温升控制在一定的范围内；避免了单独设计散热系统,有利于节省空间,并减轻重量。(The invention provides a suspension hydraulic system and a vehicle, wherein the suspension hydraulic system comprises: a first oil tank; the suspension oil cylinder is provided with a rod cavity and a rodless cavity; the outlet end and the inlet end of the one-way valve are respectively communicated with the rod cavity and the first oil tank; the two ends of the damping valve are respectively communicated with the rod cavity and the first oil tank; and the energy accumulator is communicated with the rodless cavity through a first pipeline. According to the technical scheme, the oil tank of the vehicle is connected into the suspension hydraulic system, and the oil in the oil tank are directly utilized for heat dissipation, so that the heat dissipation efficiency is high, and the temperature rise of the suspension hydraulic system can be controlled within a certain range; and a separately designed heat dissipation system is avoided, so that the space is saved and the weight is reduced.)

1. A suspension hydraulic system, comprising:

a first tank (10);

suspension cylinder (12) the suspension cylinder (12) having a rod chamber (126) and a rodless chamber (128);

a check valve (14), an outlet end and an inlet end of the check valve (14) are respectively communicated with the rod cavity (126) and the first oil tank (10);

the two ends of the damping valve (16) are respectively communicated with the rod cavity (126) and the first oil tank (10);

an accumulator (18) in communication with the rodless cavity (128) through a first conduit.

2. The suspension hydraulic system according to claim 1,

the suspension oil cylinder (12) comprises a cylinder barrel (120) and a piston (122), the piston (122) is connected with a piston rod (124) extending out of the cylinder barrel (120), and the piston (122) is slidably arranged in the cylinder barrel (120) and divides the cylinder barrel (120) into the rod cavity (126) and the rodless cavity (128).

3. The suspension hydraulic system according to claim 2,

the first oil tank (10) is connected with a radiator.

4. The suspension hydraulic system of claim 3, further comprising:

and the switch valve (20) is arranged on the first pipeline so as to control the on-off of the first pipeline.

5. The suspension hydraulic system of claim 4, further comprising:

a second tank (22) communicating with said accumulator (18) through a second conduit;

the safety valve (24) is arranged on the second pipeline so as to control the on-off of the second pipeline;

the safety valve (24) is used for communicating with the second pipeline when the pressure on the second pipeline is larger than a preset pressure.

6. The suspension hydraulic system according to any one of claims 2-5, further comprising:

a pressure oil inlet (26) in communication with the rodless cavity (128) through a third line.

7. The suspension hydraulic system of claim 6, further comprising:

and the locking valve (28) is arranged on the third pipeline to control the on-off of the third pipeline.

8. The suspension hydraulic system according to claim 5,

the first tank (10) and the second tank (22) being in communication with each other, or

The first oil tank (10) and the second oil tank (22) are the same oil tank.

9. A vehicle, characterized by comprising:

a vehicle body;

the suspension hydraulic system according to any one of claims 1 to 8, provided on the vehicle body.

10. The vehicle of claim 9,

the axial direction of a suspension oil cylinder (12) in the suspension hydraulic system is arranged along the vertical direction.

Technical Field

The invention relates to the technical field of vehicles, in particular to a suspension hydraulic system and a vehicle.

Background

The vehicle is generally provided with a suspension hydraulic system for vibration reduction, the suspension hydraulic system mainly comprises a one-way valve, a damping valve, an energy accumulator and the like, the suspension hydraulic system can generate a large amount of heat in the vibration reduction and energy absorption process through the damping valve, so that the oil temperature of the suspension hydraulic system is increased, the problem is solved by independently designing a suspension hydraulic heat dissipation system at present, but the heat dissipation system occupies a large space, the weight of the material for manufacturing the heat dissipation system is generally large, and the vehicle load is increased.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

In view of the above, it is an object of the present invention to provide a suspension hydraulic system.

It is another object of the present invention to provide a vehicle.

In order to achieve the above object, a first aspect of the present invention provides a suspension hydraulic system, including: a first oil tank; the suspension oil cylinder is provided with a rod cavity and a rodless cavity; the outlet end and the inlet end of the one-way valve are respectively communicated with the rod cavity and the first oil tank; the two ends of the damping valve are respectively communicated with the rod cavity and the first oil tank; and the energy accumulator is communicated with the rodless cavity through a first pipeline.

In this technical scheme, through the cavity that has the pole with hanging the hydro-cylinder and first oil tank intercommunication, hang a large amount of heats that hydraulic system absorbed energy through the damping valve damping like this and can carry out the heat exchange along with fluid in the first oil tank of fluid inflow and first oil tank, thereby reduce the fluid temperature, realize radiating purpose, current oil tank on the vehicle can be utilized to such structure, do not need to set up cooling system or radiating part alone, as long as set up the pipeline of intercommunication between hanging hydro-cylinder and first oil tank can, a structure is simple, easy production and installation, can also avoid addding the part on the vehicle, be favorable to reducing the vehicle load.

Specifically, the first oil tank is an oil tank which is carried by the vehicle and used for supplying oil to other systems, and is not designed for suspending a hydraulic system, so that no additional space is occupied; the rod cavity and the first oil tank of the suspension oil cylinder are simultaneously communicated with a check valve and a damping valve, understandably, the outlet end and the inlet end of the check valve are respectively communicated with the rod cavity and the first oil tank, namely the direction of the check valve is from the first oil tank to the rod cavity, when the rod cavity contracts, the check valve is closed, oil in the rod cavity can flow to the first oil tank through the damping valve, when the oil passes through the damping valve, the temperature of the oil rises due to vibration absorption of a suspension hydraulic system, after the oil flows to the first oil tank, the oil can exchange heat with the first oil tank and exchange heat with the outside through the first oil tank, the heat exchange can be carried out with original oil in the first oil tank, the heat dissipation effect is good, and no additional component or heat dissipation system is required to be added; when the rod cavity is expanded, oil in the first oil tank cooled through heat dissipation can flow to the rod cavity through the one-way valve, and a large amount of heat is not generated any more, so that the temperature rise of the suspension hydraulic system can be controlled within a certain range and cannot be too high; the energy storage ware passes through first pipeline and rodless chamber intercommunication, is convenient for when receiving the impact and lead to rodless chamber compression, in the fluid of rodless intracavity flowed into the energy storage ware through first pipeline, the piston rod can retract fast to after assaulting, fluid flows into rodless intracavity again in the energy storage ware, makes rodless chamber recover, keeps the vehicle steady.

In the technical scheme, the suspension oil cylinder comprises a cylinder barrel and a piston, the piston is connected with a piston rod extending out of the cylinder barrel, and the piston is slidably arranged in the cylinder barrel and divides the cylinder barrel into a rod cavity and a rodless cavity.

In the above technical solution, the first oil tank is connected with a radiator.

In the above technical solution, the suspension hydraulic system further includes: and the switch valve is arranged on the first pipeline to control the on-off of the first pipeline.

In the above technical solution, the suspension hydraulic system further includes: the second oil tank is communicated with the energy accumulator through a second pipeline; the safety valve is arranged on the second pipeline to control the on-off of the second pipeline; the safety valve is used for communicating the second pipeline when the pressure on the second pipeline is greater than the preset pressure.

In any one of the above solutions, the suspension hydraulic system further includes: and the pressure oil inlet is communicated with the rodless cavity through a third pipeline.

In the above technical solution, the suspension hydraulic system further includes: and the locking valve is arranged on the third pipeline to control the on-off of the third pipeline.

In the above technical scheme, the first oil tank and the second oil tank are communicated with each other, or the first oil tank and the second oil tank are the same oil tank.

An aspect of the second aspect of the invention provides a vehicle including: a vehicle body; the suspension hydraulic system according to any one of the embodiments of the first aspect is provided on a vehicle body.

In this technical scheme, through adopting the suspension hydraulic system of any one above-mentioned technical scheme to have above-mentioned technical scheme's whole beneficial effect, no longer describe here.

In the above technical solution, the axial direction of the suspension cylinder in the suspension hydraulic system is arranged along the vertical direction.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a hydraulic schematic diagram of a suspension hydraulic system according to an embodiment of the present invention.

Wherein, the corresponding relationship between the reference numbers and the component names in fig. 1 is:

10 first oil tank, 12 suspension oil tank, 120 cylinder, 122 piston, 124 piston rod, 126 rod cavity, 128 rodless cavity, 14 one-way valve, 16 damping valve, 18 energy accumulator, 20 switch valve, 22 second oil tank, 24 safety valve, 26 pressure oil inlet and 28 locking valve.

Detailed Description

So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Some embodiments according to the invention are described below with reference to fig. 1.

As shown in fig. 1, a suspension hydraulic system according to an embodiment of the present invention includes: a first tank 10 for containing oil; a suspension cylinder 12 for damping vibration, the suspension cylinder 12 having a rod chamber 126 and a rodless chamber 128; a check valve 14, wherein the outlet end and the inlet end of the check valve 14 are respectively communicated with the rod cavity 126 and the first oil tank 10; the two ends of the damping valve 16 are respectively communicated with the rod cavity 126 and the first oil tank 10; an accumulator 18 communicating with the rodless chamber 128 through a first conduit; wherein the rod chamber 126 is contracted, the oil in the rod chamber 126 flows into the first tank 10 through the damping valve 16 and exchanges heat, the rod chamber 126 is expanded, and the oil in the first tank 10 flows to the rod chamber 126 through the check valve 14.

In this embodiment, the rod cavity 126 of the suspension cylinder 12 is communicated with the first oil tank 10, so that a large amount of heat generated in the process of damping and absorbing energy through the damping valve 16 of the suspension hydraulic system can exchange heat with the first oil tank 10 and oil in the first oil tank 10 along with the oil flowing into the first oil tank 10, thereby reducing the temperature of the oil, and achieving the purpose of heat dissipation.

Specifically, the first oil tank 10 is an oil tank which is carried by the vehicle and used for supplying oil to other systems, and is not designed for suspending a hydraulic system, so that the first oil tank does not occupy additional space; the rod chamber 126 and the first oil tank 10 of the suspension oil cylinder 12 are simultaneously communicated with the check valve 14 and the damping valve 16, and understandably, the outlet end and the inlet end of the check valve 14 are respectively communicated with the rod chamber 126 and the first oil tank 10, that is, the direction of the check valve 14 is from the first oil tank 10 to the rod chamber 126, so that when the rod chamber 126 contracts, the check valve 14 is closed, oil in the rod chamber 126 can flow to the first oil tank 10 through the damping valve 16, and when the oil passes through the damping valve 16, the temperature of the oil rises due to vibration absorption of a suspension hydraulic system, and after the oil flows to the first oil tank 10, the oil can exchange heat with the first oil tank 10 and exchange heat with the outside through the first oil tank 10, and can also exchange heat with original oil in the first oil tank 10, and the heat dissipation effect is good without adding extra components or heat dissipation systems; when the rod cavity 126 is expanded, the oil in the first oil tank 10 after heat dissipation and temperature reduction can flow to the rod cavity 126 through the check valve 14, and a large amount of heat is not generated any more, so that the temperature rise of the suspension hydraulic system can be controlled within a certain range and cannot be too high; the accumulator 18 is communicated with the rodless cavity 128, so that when the rodless cavity 128 is compressed due to impact, oil in the rodless cavity 128 flows into the accumulator 18 through the first pipeline, the piston rod 124 can retract rapidly, and after impact, the oil flows into the rodless cavity 128 again from the accumulator 18, so that the rodless cavity 128 is restored, and the vehicle is kept stable.

Alternatively, expansion and contraction of the rod chamber 126 may be achieved by movement of the piston 122 within the suspension cylinder 12, i.e., the piston 122 moves from the side of the rodless chamber 128 to the side of the rod chamber 126, and the rod chamber 126 contracts; the piston 122 moves from the side of the rod chamber 126 to the side of the rodless chamber 128, and the rod chamber 126 expands; alternatively, the walls of the lumen 126 are made of an elastic material that expands and contracts as the elastic walls compress and rebound.

In the above embodiment, the suspension cylinder 12 includes a cylinder 120 and a piston 122, the piston 122 is connected to a piston rod 124 extending out of the cylinder 120, and the piston 122 is slidably disposed in the cylinder 120 and divides the cylinder 120 into a rod chamber 126 and a rodless chamber 128.

In this embodiment, the piston 122 is slidably disposed within the cylinder 120 and divides the cylinder 120 into a rod chamber 126 and a rodless chamber 128, which facilitates the expansion and contraction of the rod chamber 126 by changing the size of the two chambers, the rod chamber 126 and the rodless chamber 128, through the sliding movement of the piston 122; the piston rod 124 extends out of the cylinder 120, which is beneficial for connecting other components and receiving external impact so as to absorb vibration and energy for the vehicle.

In the above embodiment, the first oil tank 10 is connected to a radiator, so that the first oil tank 10 can be cooled more quickly by the radiator, the temperature difference between the oil in the first oil tank 10 and the oil flowing from the rod chamber 126 is increased, the heat dissipation and cooling effects of the first oil tank 10 on the oil of the suspension hydraulic system are improved, or the radiator indirectly dissipates the heat of the oil in the suspension hydraulic system through the first oil tank 10, and further the temperature rise of the suspension hydraulic system is controlled within a certain range without being too high.

In the above embodiment, the suspension hydraulic system further includes: and the switch valve 20 is arranged on the first pipeline to control the on-off of the first pipeline.

In this embodiment, the on-off valve 20 is provided to control the on-off of the first line, so that when the suspension cylinder 12 is lifted, oil only enters the rodless chamber 128 and does not flow into the accumulator 18.

In the above embodiment, the suspension hydraulic system further includes: a second tank 22 communicating with the accumulator 18 through a second conduit; the safety valve 24 is arranged on the second pipeline to control the on-off of the second pipeline; the relief valve 24 is adapted to communicate with the second line when the pressure on the second line is greater than a predetermined pressure.

In this embodiment, through the arrangement of the second oil tank 22 and the relief valve 24, when the suspension cylinder 12 is impacted by overload, the relief valve 24 opens to overflow, so that the oil in the rodless chamber 128 can not only flow into the accumulator 18, but also flow into the second oil tank 22 through the relief valve 24, thereby avoiding the faults of pipeline burst, equipment damage and the like caused by excessive pressure in the suspension hydraulic system.

In any of the above embodiments, the suspension hydraulic system further comprises: the pressure inlet port 26 communicates with the rodless chamber 128 through a third line, which facilitates the supply of oil into the rodless chamber 128.

In the above embodiment, the suspension hydraulic system further includes: and the locking valve 28 is arranged on the third pipeline to control the on-off of the third pipeline so as to communicate with the third pipeline during oil inlet, realize oil inlet, and disconnect the third pipeline after the oil inlet is finished, so that oil leakage is avoided.

In the above embodiment, the first tank 10 and the second tank 22 communicate with each other, or the first tank 10 and the second tank 22 are the same tank.

In this embodiment, the first oil tank 10 and the second oil tank 22 are communicated with each other, so as to increase the fluidity of the oil, increase the number of objects to be cooled of the oil with a large amount of heat flowing through the damping valve 16, and further increase the cooling effect; the first oil tank 10 and the second oil tank 22 are the same oil tank, which is beneficial to simplifying the structure, reducing the number of components and reducing the load of the vehicle.

An embodiment of a second aspect of the invention provides a vehicle comprising: a vehicle body; the suspension hydraulic system according to any one of the embodiments of the first aspect is provided on a vehicle body.

In this embodiment, by using the suspension hydraulic system according to any one of the embodiments, all the beneficial effects of the embodiments are achieved, and are not described herein again.

In the above embodiment, the axial direction of the suspension cylinder 12 in the suspension hydraulic system is arranged along the vertical direction, so that the suspension cylinder 12 is conveniently reset by the self weight of the vehicle body, the structure is simplified, and the use convenience of the suspension hydraulic system is improved.

According to a specific embodiment of the suspension hydraulic system provided by the application, the following technical scheme is adopted:

the suspension oil cylinder 12 of the suspension hydraulic system comprises a rod cavity 126 and a rodless cavity 128, the rodless cavity 128 is communicated with the energy accumulator 18 to absorb energy impact in the working process, a switch valve 20 is arranged between the rodless cavity 128 and the energy accumulator 18 for locking, the rod cavity 126 of the suspension oil cylinder 12 is communicated with a hydraulic oil tank through a damping valve 16, when the suspension oil cylinder 12 works, heat generated when oil passes through the damping valve 16 is brought back to the hydraulic oil tank through the oil, the heat can be effectively dissipated in the hydraulic oil tank, the temperature rise of the whole system is controlled within a certain range, a heat dissipation system does not need to be designed for a small-sized hydraulic system, and therefore space is saved, and weight is reduced.

As shown in fig. 1, the suspension hydraulic system mainly includes a latch valve 28, a switching valve 20, a relief valve 24, an accumulator 18, a suspension cylinder 12, a check valve 14, a damping valve 16, and a tank.

The working principle is as follows:

1) when the suspension oil cylinder 12 needs to be lifted, the locking valve 28 is opened, the switch valve 20 is closed, the rodless cavity 128 of the suspension oil cylinder 12 is filled with oil from the pressure oil inlet 26, and the oil in the rod cavity 126 flows back to the oil tank through the damping valve 16;

2) when the suspension oil cylinder 12 is lifted to a preset position, the locking valve 28 is closed at the moment, the switch valve 20 is opened, the oil in the rodless cavity 128 of the suspension oil cylinder 12, the energy accumulator 18, the switch valve 20, the check valve 14 and the damping valve 16 form a set of vibration damping system, when the suspension oil cylinder 12 encounters impact, the rodless cavity 128 of the suspension oil cylinder 12 is quickly recovered under the action of external force, the piston rod 124 of the suspension oil cylinder 12 is quickly recovered at the moment, the oil is absorbed into the energy accumulator 18, the oil in the oil tank is supplemented into the rod cavity 126 of the oil cylinder through the check valve 14, the oil in the rodless cavity 128 of the suspension oil cylinder 12 flows into the energy accumulator 18 through the switch valve 20, and the energy accumulator 18 is in an energy;

3) after the impact is finished, the piston rod 124 of the suspension oil cylinder 12 extends out under the action of pressure oil of the energy accumulator 18, at the moment, oil in the rod cavity 126 of the suspension oil cylinder 12 flows back to the hydraulic oil tank through the damping valve 16, a large amount of heat is generated in the process that the oil passes through the damping valve 16, the heat is brought back to the hydraulic oil tank by the oil to exchange heat, and the hydraulic oil tank has a better heat dissipation effect, so that the temperature rise of a suspension hydraulic system is controlled within a certain range;

4) after the suspension oil cylinder 12 works, the suspension oil cylinder 12 can return to the initial position under the action of the self weight of the vehicle body;

5) when the suspension oil cylinder 12 is suddenly impacted by overload, the oil pressure of the system overflows through the safety valve 24, and the system can be effectively protected.

The specific embodiment has the following beneficial effects:

1) a piston rod in a rod cavity of a suspension oil cylinder of the suspension hydraulic system extends out, oil directly returns to an oil tank and can exchange heat with the outside (an oil tank), and the rod cavity is retracted and is realized by the dead weight of the whole vehicle;

2) and an additional heat dissipation system is not required to be designed, so that the space can be saved for a small hydraulic system, and the weight of the vehicle body can be reduced.

The technical scheme of the invention is explained in detail in combination with the attached drawings, and by the technical scheme of the invention, the oil tank of the vehicle is connected to the suspension hydraulic system, and the oil in the oil tank are directly utilized for heat dissipation, so that the heat dissipation efficiency is high, and the temperature rise of the suspension hydraulic system can be controlled within a certain range; and a separately designed heat dissipation system is avoided, so that the space is saved and the weight is reduced.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.