阅读说明：本技术 一种悬架二级限位装置、悬架限位结构及油气悬架 (Suspension second grade stop device, suspension limit structure and oil gas suspension ) 是由 关春智 李立军 彭裕平 王萍 张熙隆 于 2019-11-06 设计创作，主要内容包括：本发明属悬架技术领域,公开了一种悬架二级限位装置,包括：集成支座、活动限位块以及弹性缓冲块；所述集成支座上设置有油气弹簧固定部和限位固定部,所述活动限位块可拆卸地固定在所述限位固定部上；所述弹性缓冲块固定在所述活动限位块上。本发明提供的装置能够适应特种车辆在特种场景下,降高悬架实现刚性支撑车体,在常规场景下,实现弹性限位,降低零件冲击损伤。(The invention belongs to the technical field of suspension, and discloses a suspension secondary limiting device, which comprises: the integrated support, the movable limiting block and the elastic buffer block; the integrated support is provided with an oil-gas spring fixing part and a limiting fixing part, and the movable limiting block is detachably fixed on the limiting fixing part; the elastic buffer block is fixed on the movable limiting block. The device provided by the invention can adapt to a special vehicle in a special scene, the suspension is lowered to realize rigid support of the vehicle body, elastic limit is realized in a conventional scene, and impact damage of parts is reduced.)

1. A suspension two-stage limiting device is characterized by comprising: the integrated support, the movable limiting block and the elastic buffer block;

the integrated support is provided with an oil-gas spring fixing part and a limiting fixing part, and the movable limiting block is detachably fixed on the limiting fixing part;

the elastic buffer block is fixed on the movable limiting block.

2. The suspension secondary stop device according to claim 1, wherein the movable stop comprises: a stopper body;

a fastening groove is formed in the limiting block main body, and the elastic buffer block is embedded in the fastening groove;

the limiting block main body is detachably fixed on the limiting fixing part.

3. The suspension secondary limiting device according to claim 2, wherein a fastening through groove is formed at the bottom of the fastening groove.

4. The suspension secondary limiting device according to claim 3, wherein a boss is formed on the elastic buffer block, and the boss is embedded in the fastening through groove;

the edge of the top of the boss extends towards the outer side of the boss to form a limiting flange, and the limiting flange protrudes out of the fastening through groove and abuts against the groove opening surface of the fastening through groove.

5. The suspension secondary stop device of claim 4 wherein said resilient bump stop is a rubber bump stop.

6. The suspension secondary limiting device according to claim 2, wherein the limiting block body is provided with a through hole in a clamping manner and is fixed on the limiting fixing part by a fastening bolt penetrating through the through hole.

7. The suspension secondary limiting device according to claim 1, wherein a bearing platform is disposed on the limiting fixing portion, and the movable limiting block abuts against the bearing platform.

8. A suspension limiting structure is characterized by comprising: a limiter and a suspension secondary limiting device as claimed in claim 1;

the stopper and the movable stopper are arranged oppositely.

9. The suspension limiting structure according to claim 8, wherein a side of said elastic buffer block facing said limiter is provided as an inclined surface.

10. An hydro-pneumatic suspension, comprising; a suspension main body and the suspension limiting structure according to claim 8;

the stopper is fixed to an upper suspension arm of the suspension main body.

Technical Field

The invention relates to the technical field of suspensions, in particular to a suspension secondary limiting device, a suspension limiting structure and an oil-gas suspension.

Background

The suspension device of the heavy special cross-country vehicle is provided with a limiter which comprises an upper limit and a lower limit. The lower limit limits the wheel down-jump range, the upper limit limits the wheel up-jump range, and the wheels jump in the limit range all the time in the driving process of the whole vehicle, so that the problems of structural interference and the like caused by the overlarge wheel jump range can be prevented. With the requirements of railway transportation, trafficability and other specific functions of the heavy special off-road vehicle, the suspension system of the heavy special off-road vehicle is required to have a height adjustable function, and the adjustment function is generally realized by a hydraulic system. However, the technical problem that the limit structure of the heavy special off-road vehicle can meet the requirement of special transportation scenes and cannot be compatible with the conventional running requirement exists in the prior art.

Disclosure of Invention

The invention provides a suspension secondary limiting device, a suspension limiting structure and an oil-gas suspension, and solves the technical problem that a heavy special off-road vehicle limiting structure in the prior art cannot meet the compatibility of special transportation scene requirements and conventional driving requirements.

In order to solve the technical problem, the invention provides a suspension two-stage limiting device, which comprises: the integrated support, the movable limiting block and the elastic buffer block;

the integrated support is provided with an oil-gas spring fixing part and a limiting fixing part, and the movable limiting block is detachably fixed on the limiting fixing part;

the elastic buffer block is fixed on the movable limiting block.

Further, the movable limiting block comprises: a stopper body;

a fastening groove is formed in the limiting block main body, and the elastic buffer block is embedded in the fastening groove;

the limiting block main body is detachably fixed on the limiting fixing part.

Furthermore, a fastening through groove is formed in the bottom of the fastening groove.

Furthermore, a boss is arranged on the elastic buffer block and embedded in the fastening through groove;

the edge of the top of the boss extends towards the outer side of the boss to form a limiting flange, and the limiting flange protrudes out of the fastening through groove and abuts against the groove opening surface of the fastening through groove.

Further, the elastic buffer block is a rubber buffer block.

Furthermore, the limiting block main body is provided with a through hole in a clamping mode, and the limiting block main body is fixed on the limiting fixing portion through a fastening bolt penetrating through the through hole.

Furthermore, a bearing platform is arranged on the limiting fixing part, and the movable limiting block is abutted against the bearing platform.

A suspension limiting structure comprising: the limiting stopper and the suspension secondary limiting device;

the stopper and the movable stopper are arranged oppositely.

Further, one side of the elastic buffer block facing the limiting stopper is arranged to be an inclined surface.

An hydro-pneumatic suspension comprising; the suspension main body and the suspension limiting structure;

the stopper is fixed to an upper suspension arm of the suspension main body.

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

according to the suspension frame secondary limiting device provided by the embodiment of the application, the limiting support is integrally generated on the hydro-pneumatic spring support to form an integrated support; the hydro-pneumatic spring support is used as a hydro-pneumatic spring fixing part for fixing the hydro-pneumatic spring and keeping the functional structure of the hydro-pneumatic spring; the limiting support serves as a newly-added limiting fixing part and is used for fixing the movable limiting block, so that in a special scene and in a high-cantilever state, the weight of the vehicle body is borne by the movable limiting block, and rigid support is achieved. Meanwhile, when the vehicle runs in a conventional scene, the cantilever is at a relatively low position, and at the moment, elastic buffering and limiting are realized through the movable limiting block and the elastic buffering block, so that the whole vehicle comfort is obtained, the impact damage of parts is reduced, and the service life is prolonged; thereby realizing the compatibility of two different scenes as a whole. It is worth mentioning that the support structure integrally arranged is convenient to disassemble and assemble.

Drawings

Fig. 1 is a schematic structural diagram of a suspension secondary limiting device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an integrated support according to an embodiment of the present invention;

FIG. 3 is a schematic view of a first angular structure of a movable stopper according to an embodiment of the present invention;

fig. 4 is a schematic view of a second angle structure of the movable limiting block according to the embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an elastic buffer block according to an embodiment of the present invention;

FIG. 6 is a structural diagram of a suspension two-stage limiting device according to an embodiment of the present invention in a first usage state;

fig. 7 is a structural schematic diagram of a first usage state of the suspension secondary limiting device according to the embodiment of the invention.

Detailed Description

The embodiment of the application provides a suspension second grade stop device, suspension limit structure and oil gas suspension, solves among the prior art heavy special cross country vehicle limit structure can't satisfy special type transportation scene demand and the compatible technical problem of conventional demand of traveling.

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 specification, and it should be understood that the embodiments and specific features of the embodiments of the present invention are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features of the embodiments and examples of the present application may be combined with each other without conflict.

Referring to fig. 1, a suspension secondary limiting device includes: integrated support 1, activity stopper 6 and elastic buffer piece 7, elastic buffer piece 7 is fixed on the stopper 6 that moves about.

Referring to fig. 2, in this embodiment, the integrated support 1 is provided with an oil-gas spring fixing portion 11 and a limiting fixing portion 12, and the movable limiting block 6 is detachably fixed to the limiting fixing portion 12, and is used for detaching the movable limiting block 6 with the elastic buffer block 7 from the integrated support 1 when the cantilever is at a high position, that is, in a special scene, so that the integrated support 1 directly and rigidly supports the vehicle body, rigid limiting is realized, excessive stress of an oil-gas hydraulic system is avoided, and the function normalization of the oil-gas hydraulic system is ensured; when the cantilever is low, also during conventional scene, install on integrated support 1 on the activity stopper 6 that has elastic buffer block 7, elastic buffer block 7 and stopper flexible contact to the spacing travelling comfort of guaranteeing of elastic buffer, and reduce the damage of part, increase of service life.

Referring to fig. 3 and 4, in particular, the movable stopper 6 includes: a stopper body; a fastening groove 61 is formed in the limiting block main body, and the elastic buffer block 7 is embedded in the fastening groove 61;

the limiting block main body is detachably fixed on the limiting fixing part 12, so that the limiting block main body can be conveniently replaced, and can also be detached at the high position of the cantilever, namely under a special scene, so that rigid limiting is realized.

Furthermore, a bearing platform is arranged on the limit fixing part 12, the movable limit block 6 is abutted against the bearing platform, the movable limit block 6 can be manufactured through the bearing platform, the limit stopper 8 on the upper cantilever can be directly supported, and rigid limit is realized.

Further, fastening logical groove 62 has been seted up to fastening recess 61 bottom, when guaranteeing to fix, can also form certain impact and let the nature of letting, let elastic buffer block 7 accessible elastic deformation go deep into wherein, guarantee its functional reliability, avoid the damage.

Generally, for the convenience of disassembly and assembly, the fixed lug part 63 is provided on the movable limiting block 6, and a through hole 64 is formed on the fixed lug part, so that the fixing of the fixing bolt is facilitated.

Referring to fig. 5, further, a boss 71 is disposed on the elastic buffer block 7, and the boss is embedded in the fastening through groove; the edge of the top of the boss 71 extends to the outside thereof to form a limiting flange, and the limiting flange protrudes out of the fastening through groove 62 and abuts against the groove opening surface of the fastening through groove 62, so that reliable fixation is realized.

Generally, the buffering limiting surface 72 of the elastic buffering block 7 is formed as an inclined surface to facilitate stable contact with the limiter 8.

Further, the elastic buffer block 7 is a rubber buffer block.

Case figure 6 and figure 7 are the two states of rigidity spacing and elastic buffering spacing respectively, namely, the one-level spacing is conventional elasticity spacing, and when the second level is spacing, the movable limiting block 6 and the elastic limiting block 7 are dismantled for direct rigidity spacing.

This embodiment has also proposed suspension limit structure and oil gas suspension implementation scheme based on above-mentioned structure.

A suspension limiting structure comprising: the limiting stopper and the suspension secondary limiting device;

the stopper and the movable stopper are arranged oppositely.

Further, one side of the elastic buffer block facing the limiting stopper is arranged to be an inclined surface.

An hydro-pneumatic suspension comprising; the suspension main body and the suspension limiting structure;

the stopper is fixed to an upper suspension arm of the suspension main body.

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

according to the suspension frame secondary limiting device provided by the embodiment of the application, the limiting support is integrally generated on the hydro-pneumatic spring support to form an integrated support; the hydro-pneumatic spring support is used as a hydro-pneumatic spring fixing part for fixing the hydro-pneumatic spring and keeping the functional structure of the hydro-pneumatic spring; the limiting support serves as a newly-added limiting fixing part and is used for fixing the movable limiting block, so that in a special scene and in a high-cantilever state, the weight of the vehicle body is borne by the movable limiting block, and rigid support is achieved. Meanwhile, when the vehicle runs in a conventional scene, the cantilever is at a relatively low position, and at the moment, elastic buffering and limiting are realized through the movable limiting block and the elastic buffering block, so that the whole vehicle comfort is obtained, the impact damage of parts is reduced, and the service life is prolonged; thereby realizing the compatibility of two different scenes as a whole. It is worth mentioning that the support structure integrally arranged is convenient to disassemble and assemble.

Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.