CN218021098U

CN218021098U - Oil gas suspension

Info

Publication number: CN218021098U
Application number: CN202222435038.4U
Authority: CN
Inventors: 李学斌; 何建国; 王萍
Original assignee: Special Vehicle Technology Center of Hubei Aerospace Technology Research Institute; Hubei Sanjiang Space Wanshan Special Vehicle Co Ltd
Current assignee: Special Vehicle Technology Center of Hubei Aerospace Technology Research Institute; Hubei Sanjiang Space Wanshan Special Vehicle Co Ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2022-12-13
Anticipated expiration: 2032-09-14

Abstract

The utility model belongs to the technical field of heavy cross country vehicle chassis oil gas suspension, a oil gas suspension is disclosed, include: the oil-gas spring, the locking valve, the damping valve, the energy accumulator and the pressure switch; the hydro-pneumatic spring is sequentially connected with the locking valve, the damping valve and the energy accumulator through an energy accumulator pipeline; the pressure switch is arranged on an oil-gas pipeline of the oil-gas spring, and the signal output end of the pressure switch is connected with the control signal end of the locking valve. The utility model provides an oil gas suspension can compromise the empty load of chassis and the great change operating mode of full load state load.

Description

Oil gas suspension

Technical Field

The utility model relates to a heavy cross country vehicle chassis oil gas suspension technical field, in particular to oil gas suspension.

Background

Hydro-pneumatic suspension hydraulic systems for off-road vehicles chassis typically employ a diaphragm accumulator as a damping element. The following limitations exist during use of the accumulator: firstly, the working pressure P1 must not exceed the maximum allowable pressure of the accumulator; secondly, excessive compression is avoided, and the ratio of the working pressure P1 to the pre-charging pressure P0 exceeds the allowable compression ratio; and thirdly, the working pressure P1 is more than 1.1P0, so that the valve seat bottom collision does not occur when the diaphragm of the energy accumulator expands. Therefore, when the load change of the chassis in the no-load state and the full-load state is large, the pre-charging parameter P0 of one energy accumulator cannot give consideration to the no-load state and the full-load state, the filling pressure needs to be adjusted, and the use and maintenance requirements of the chassis are increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides an oil gas suspension solves among the prior art energy storage ware pre-charge pressure setting parameter and can't compromise the technical problem that the chassis is unloaded and the great change of full load state load.

In order to solve the technical problem, the utility model provides an oil gas suspension, include: the oil-gas spring, the locking valve, the damping valve, the energy accumulator and the pressure switch;

the hydro-pneumatic spring is sequentially connected with the locking valve, the damping valve and the energy accumulator through an energy accumulator pipeline;

the pressure switch is arranged on an oil-gas pipeline of the oil-gas spring, and the signal output end of the pressure switch is connected with the control signal end of the locking valve.

Furthermore, the number of the oil-gas springs is multiple, and the oil-gas springs are respectively connected with the oil-gas pipeline;

the accumulator pipeline is connected with the oil and gas pipeline.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

the hydro-pneumatic suspension provided by the embodiment of the application can track and detect the pressure of the hydro-pneumatic pipeline of the hydro-pneumatic spring by arranging the pressure switch, and forms a switching signal to control the opening and closing of the locking valve at the front end of the energy accumulator pipeline, so that the connection and disconnection between the energy accumulator and the damper and the hydro-pneumatic spring are controlled; therefore, the set value of the pressure switch can be set to serve as a threshold value for judging the connection and disconnection of the energy accumulator and the damper, so that the filling parameters of the energy accumulator can meet the use requirement of the empty and full-load state of the sole plate, and frequent maintenance is not needed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is the structural schematic diagram of the hydro-pneumatic suspension provided by the embodiment of the utility model.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative position relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.

The application is described below with reference to specific embodiments in conjunction with the following drawings.

The embodiment of the application provides a hydro-pneumatic suspension, solves the technical problem that the energy accumulator pre-charge pressure setting parameter in the prior art can not take into account the large change of the chassis load in the no-load and full-load states.

In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the present disclosure, and it should be understood that the specific features in the embodiments and examples of the present disclosure are detailed descriptions of the technical solutions of the present disclosure, but not limitations of the technical solutions of the present disclosure, and the technical features in the embodiments and examples of the present disclosure may be combined with each other without conflict.

Referring to fig. 1, an oil and gas suspension includes: hydro-pneumatic spring 1, holding valve 2, damping valve 3, accumulator 4 and pressure switch 5.

The hydro-pneumatic spring 1 is sequentially connected with the locking valve 2, the damping valve 3 and the energy accumulator 4 through an energy accumulator pipeline; therefore, the energy accumulator can realize the buffer and shock absorption functions.

The pressure switch 5 is arranged on an oil-gas pipeline of the oil-gas spring 1, and a signal output end of the pressure switch 5 is connected with a control signal end of the latching valve 2, so that a switch signal is output by tracking and detecting the pressure of the oil-gas pipeline, the action of the latching valve 2 is controlled, and the connection and disconnection of the damping valve 3 and the energy accumulator 4 with the oil-gas spring 1 are controlled.

When the internal pressure of the hydro-pneumatic spring 1 is lower than a set value, the pressure switch 5 does not act. When the internal pressure of the hydro-pneumatic spring 1 is higher than a preset value, the pressure switch 5 outputs a control signal to enable the latching valve 2 to be in a latching state when the power is off.

The specific working process comprises the following steps:

when the vehicle runs in a full-load state, the internal pressure of the hydro-pneumatic spring 1 is higher than the set value of the pressure switch 5, the pressure switch 5 is not triggered, and the locking valve 2 is in an electric connection state. The hydro-pneumatic spring 1 is communicated with the damping valve 3 and the energy accumulator 4. When the vehicle is impacted, oil liquid enters the liquid end of the energy accumulator 4 through the locking valve 2, and gas in the energy accumulator 4 is compressed to play a role in buffering and damping.

When the vehicle runs in an idle state, the internal pressure of the hydro-pneumatic spring 1 is lower than the set value of the pressure switch 5, and the pressure switch 5 is triggered to enable the locking valve 2 to be in a power-off locking state. The hydro-pneumatic spring 1, the damping valve 3 and the energy accumulator 4 are in a locking state. When a certain wheel is subjected to impact load, the buffer is realized by communicating oil inside the suspension.

Generally, the number of the hydro-pneumatic springs 1 is multiple, and the hydro-pneumatic springs 1 are respectively connected with the hydro-pneumatic pipeline; the accumulator pipeline is connected with the oil and gas pipeline. Correspondingly, each hydro-pneumatic spring 1 is provided with a combination structure of a group of the holding valve 2, the damping valve 3 and the accumulator 4; the whole is controlled identically by the pressure switch 5.

the hydro-pneumatic suspension provided by the embodiment of the application can track and detect the pressure of a hydro-pneumatic pipeline of a hydro-pneumatic spring by arranging the pressure switch, and forms a switching signal to control the opening and closing of a locking valve at the front end of an energy accumulator pipeline, so that the connection and disconnection between the energy accumulator and a damper and the hydro-pneumatic spring are controlled; therefore, the set value of the pressure switch can be set to serve as a threshold value for judging the connection and disconnection of the energy accumulator and the damper, so that the filling parameters of the energy accumulator can meet the use requirement of the empty and full-load state of the sole plate, and frequent maintenance is not needed.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.

Furthermore, descriptions in this application as to "first," "second," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

In the description of the present invention, unless otherwise expressly specified or limited, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the present application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. An hydro-pneumatic suspension, comprising: the oil-gas spring, the locking valve, the damping valve, the energy accumulator and the pressure switch;

2. The hydro-pneumatic suspension of claim 1, wherein said hydro-pneumatic spring is plural in number, and a plurality of said hydro-pneumatic springs are respectively connected to said hydro-pneumatic conduit;

the accumulator pipeline is connected with the oil and gas pipeline.