CN117048266A - Combined type air suspension protection architecture of integrated limit function - Google Patents

Combined type air suspension protection architecture of integrated limit function Download PDF

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Publication number
CN117048266A
CN117048266A CN202311269447.4A CN202311269447A CN117048266A CN 117048266 A CN117048266 A CN 117048266A CN 202311269447 A CN202311269447 A CN 202311269447A CN 117048266 A CN117048266 A CN 117048266A
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CN
China
Prior art keywords
guide arm
guide
air suspension
frame
guide rod
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.)
Pending
Application number
CN202311269447.4A
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Chinese (zh)
Inventor
杜笑晨
周生权
王江伟
乔思蓉
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Dongfeng Commercial Vehicle Co Ltd
Original Assignee
Dongfeng Commercial Vehicle Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dongfeng Commercial Vehicle Co Ltd filed Critical Dongfeng Commercial Vehicle Co Ltd
Priority to CN202311269447.4A priority Critical patent/CN117048266A/en
Publication of CN117048266A publication Critical patent/CN117048266A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/02—Attaching arms to sprung part of vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
    • B60G11/27—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs wherein the fluid is a gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
    • B60G11/28—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/04—Buffer means for limiting movement of arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/152—Pneumatic spring

Abstract

The utility model discloses a composite air suspension protection structure integrating a limiting function, which comprises a frame, a driving axle, a guide arm and an air spring, wherein the middle part of the guide arm is connected with the driving axle through a U-shaped bolt connecting component, one end of the guide arm is hinged with a guide arm fixing support through a pin shaft, the guide arm fixing support is fixedly connected with the frame, the other end of the guide arm is connected with the air spring, the air spring is fixedly connected with the frame, the U-shaped bolt connecting component comprises a cover plate positioned above the guide arm, the frame is provided with a guide rod, the cover plate is provided with a boss feature, the boss feature comprises an arc-shaped hole, the arc-shaped hole is connected with the guide rod in a sliding fit manner, and the rotation central axis of the arc-shaped hole is collinear with the central axis of the pin shaft. The utility model effectively solves the problems of unreliable guide arm protection and high cost of the shock absorber, further improves the reliability, stability and economy of the air suspension, and brings greater improvement to the running safety and comfort of the vehicle.

Description

Combined type air suspension protection architecture of integrated limit function
Technical Field
The utility model belongs to the technical field of composite air suspensions, and particularly discloses a composite air suspension protection structure integrating a limiting function.
Background
Air suspensions offer significant advantages over conventional leaf spring suspensions in several respects. Firstly, the air suspension can effectively improve the running smoothness of the vehicle, so that the riding experience is safer and more comfortable. The vehicle body height can be automatically adjusted to deal with different load changes, and the stable height of the vehicle is maintained, so that the stability and the safety of driving are further improved. In addition, the vibration of the vehicle adopting the air suspension is reduced, so that the damage degree to electric appliances, meters, a vehicle body and chassis accessories can be reduced, and the maintenance cost of the vehicle is reduced.
Another important advantage is that the air suspension reduces impact on the road, thereby protecting the road surface and reducing maintenance costs on the highway. The application of this suspension technology in the automotive field is becoming widespread, and the whole traffic infrastructure is positively influenced.
The specification of the Chinese patent No. 208277780U discloses an air suspension, which comprises a frame, an axle and a guide arm, wherein the middle part of the guide arm is connected with the axle through a U-shaped bolt, one end of the guide arm is connected with the frame through a guide arm bracket, the other end of the guide arm is used for installing an air spring, the guide arm is of a Z-shaped structure, the middle part of one end of the guide arm is sleeved with a pin shaft, the pin shaft is connected with the guide arm bracket through a bolt, the other end of the guide arm is bent towards the direction of the frame, the end of the guide arm is connected with the lower end of the air spring, and the upper end of the air spring is connected with the frame through the air spring bracket. The guide arm support is integrally cast and formed and comprises a frame connecting plate and a transverse plate, wherein a plurality of mounting holes are formed in the positions, located on two sides of the frame connecting plate, the transverse plate is vertically connected with the bottom of the frame connecting plate, a plurality of support plates are arranged between the upper end face of the transverse plate and the frame connecting plate, support legs are arranged on the positions, located at four corners of the transverse plate, of the lower end face of the transverse plate, one ends of the support legs are vertically connected with the transverse plate, and a first through hole is formed in the other ends of the support legs; the frame connecting plate is connected with the frame through the mounting hole, the end part of the pin shaft is provided with a second through hole, the pin shaft is positioned between the support legs, and the bolts pass through the first through hole and the second through hole and are fixed through nuts. A first lightening hole is formed in a position, located between the support plates, of the frame connecting plate, and a second lightening hole is formed in a position, located between the support plates, of the transverse plate. The guide arm comprises a first section of plate spring and a second section of plate spring, one end of the first section of plate spring is connected with a cylindrical part, a pin shaft is sleeved in the middle of the cylindrical part, the other end of the first section of plate spring is connected with the second section of plate spring through a Z-shaped plate spring, the second section of plate spring is bent towards the frame direction, and a bolt hole coaxial with a mounting hole at the bottom of the air spring is formed in the second section of plate spring. The air suspension further comprises a transverse thrust rod, one end of the transverse thrust rod is connected with the frame, the other end of the transverse thrust rod is connected with the axle, a rubber bushing is sleeved between the inner wall of the guide arm and the outer wall of the pin shaft, and the rubber bushing, the guide arm and the pin shaft are vulcanized into a whole. The air suspension further comprises a damper, the damper is arranged at the position, located between the axle and the air spring, of the inner side of the frame, the U-shaped bolt is connected with a U-shaped bolt bottom plate after passing through the cover plate, the guide arm, the inclined base plate and the axle in sequence, one side, close to the frame, of the U-shaped bolt bottom plate is provided with a mounting plate, the upper end of the damper is hinged with the frame through a damper bracket, and the lower end of the damper is hinged with the mounting plate. The air suspension also comprises a height valve and a height adjusting rod, one end of the height adjusting rod is fixed on the axle, the other end of the height adjusting rod is connected with the height valve, and the height valve is arranged on the left side of the frame. According to the technical scheme, the guide arm in the air suspension disclosed by the technical scheme is a single guide arm, a layer of iron sheet is wrapped on the front half section of the single guide arm, and when the guide arm is broken, the iron sheet can play a role in protection, so that the whole vehicle can be ensured to travel to a service station. When the driving axle jumps up, the upper limit is carried out through the limiting block, and when the driving axle jumps down, the lower limit is carried out through the shock absorber with the lower limit.
In summary, the suspension disclosed in the utility model comprises a frame, an axle, a guide arm and the like. The guide arm is of a Z-shaped structure and is connected with the vehicle axle and the vehicle frame through a plurality of connecting parts. The guide arm support is integrally cast and formed and provided with a plurality of mounting holes, so that firm support is provided for the stability of the guide arm.
The installation mode of the air spring in the guide arm and the connection design of the pin shaft enable the whole suspension to flexibly adapt to the movement of the vehicle. The rubber bushing plays a role in buffering between the guide arm and the pin shaft, so that the stability and riding comfort of the suspension are further improved.
In addition, the integrated shock absorber and the height adjusting rod in the suspension further improve the performance of the suspension system. The installation position and the connection mode of the shock absorber are beneficial to effectively reducing the bumpy feel during driving, and the stability of the whole vehicle is improved. The height adjusting rod allows the driver to adjust the height of the vehicle body according to the requirement, so that the driving experience is further optimized.
However, the current technical solution has some defects, such as weak structure and insufficient reliability of the guide arm adopting the iron sheet as the protection mechanism. In addition, the shock absorber with the lower limit function may increase costs.
In order to overcome these drawbacks, it is desirable to develop a novel composite air suspension protection structure that can integrate a limiting function and solve the problems of unreliable guide arm protection and high cost of the shock absorber.
Disclosure of Invention
Aiming at the technical problems in the prior art, the utility model provides a composite air suspension protection structure integrating a limiting function, which effectively solves the problems of unreliable guide arm protection and high cost of a shock absorber, further improves the reliability, stability and economy of the air suspension, and brings greater improvement to the running safety and comfort of a vehicle.
The utility model discloses a composite air suspension protection structure integrating a limiting function, which comprises a frame, a driving axle, a guide arm and an air spring, wherein the middle part of the guide arm is connected with the driving axle through a U-shaped bolt connecting component, one end of the guide arm is hinged with a guide arm fixing support through a pin shaft, the guide arm fixing support is fixedly connected with the frame, the other end of the guide arm is connected with the air spring, the air spring is fixedly connected with the frame, the U-shaped bolt connecting component comprises a cover plate positioned above the guide arm, the frame is provided with a guide rod, the cover plate is provided with a boss feature, the boss feature comprises an arc hole, the arc hole is connected with the guide rod in a sliding fit manner, and the rotation central axis of the arc hole is collinear with the central axis of the pin shaft.
In a preferred embodiment of the utility model, the guide rod is in a stepped shaft shape, a small-diameter end of the guide rod is connected with a limiting piece in a threaded mode, and the diameter of the end head part of the limiting piece is larger than the width of the arc-shaped hole.
In a preferred embodiment of the utility model, the guide rod is in a round rod shape, one end of the guide rod is in threaded connection with a limiting piece, the diameter of the end head of the limiting piece is larger than the width of the arc-shaped hole, and a rib plate matched with the limiting piece to limit the guide arm leftwards and rightwards is arranged on the outer circumferential surface of the guide rod.
In a preferred embodiment of the utility model, the stop comprises a screw or bolt.
In a preferred embodiment of the utility model, the guide rod is provided with a threaded hole for connecting the limiting member.
In a preferred embodiment of the utility model, the guide bar comprises a connecting plate and a guide shaft, the central axis of which is perpendicular to the connecting plate.
In a preferred embodiment of the present utility model, the inner peripheral wall of the arcuate hole is provided with vulcanized rubber.
In a preferred embodiment of the present utility model, the guide bar is provided with vulcanized rubber on an outer peripheral wall thereof.
In a preferred embodiment of the present utility model, the central axis of the guide bar is perpendicular to the central axis of the frame.
The utility model also discloses a vehicle, which is characterized in that: including the compound air suspension protection architecture of integrated limit function.
The beneficial effects of the utility model are as follows: the utility model has the advantages of simple structure, convenient processing and good stability, and by arranging the guide rod on the frame and arranging the boss feature with the arc hole on the cover plate, the arc hole is connected with the guide rod in a sliding fit manner, so that the upper limit and the lower limit are realized by the contact between the arc hole on the cover plate and the guide rod when the driving axle jumps up and down, the problems of unreliable protection of the guide arm and high cost of the shock absorber are effectively solved, the reliability, the stability and the economy of the air suspension are further improved, and the running safety and the comfort of a vehicle are further improved;
furthermore, when the air suspension is at the idle and full load positions, the guide rod is at the middle position in the arc-shaped hole, and when the drive axle jumps up, the cover plate jumps up along with the drive axle, the lower end of the arc-shaped hole is in contact with the guide rod, and the drive axle cannot jump up continuously, so that the upper limit is realized; when the driving axle jumps down, the cover plate jumps down along with the driving axle, the upper end of the arc-shaped hole on the cover plate is contacted with the guide rod, and the driving axle cannot jump down continuously, so that lower limit is realized;
when the drive axle jumps upwards, the limit block assembly is not limited any more, the limit block assembly can be canceled, the limit block belongs to a vulnerable part, rubber is easy to crush, and after the scheme is changed, the maintenance and replacement cost can be reduced;
when the driving axle jumps downwards, the lower limit is not performed through the vibration absorber, the vibration absorber can use a common vibration absorber without a lower limit function, and the cost of the common vibration absorber can be reduced;
when the guide arm is broken, the drive axle is hung on the guide rod through an arc closed loop, the threaded sleeve is arranged on the internal thread of the guide rod, the arc-shaped structure of the cover plate is prevented from being separated from the guide rod, the whole vehicle can normally run, the single guide arm can be protected, meanwhile, the left and right movement of the drive axle can be limited, and the left and right limiting is realized;
furthermore, the guide arm is a single guide arm, when the front end of the guide arm is broken, the drive axle is hung on the guide rod through a closed loop, the whole vehicle can travel to a service station, and the protection mechanism is safer and more reliable;
furthermore, the left and right limiting of the guide arm is realized by introducing the limiting piece, so that the cover plate is prevented from falling out of the fixed bracket rod;
furthermore, the utility model vulcanizes rubber on the inner wall of the arc hole of the cover plate, thereby reducing the contact noise of the upper jump and the lower jump of the drive axle.
Drawings
FIG. 1 is a schematic illustration of a composite air suspension protection architecture incorporating a limiting function of the present utility model;
FIG. 2 is a schematic diagram of boss features of a composite air suspension protection structure integrating limiting function of the present utility model;
FIG. 3 is a schematic view of a guide bar of a composite air suspension protection structure with integrated limit function according to the present utility model;
FIG. 4 is a schematic illustration of a limiter of a composite air suspension protection structure incorporating a limiting function of the present utility model;
in the figure, a 1-frame; 2-a guide arm fixing bracket; 3-pin shafts; 4-a guide arm; 5-a guide rod; 6-limiting pieces; 7-cover plate; 8-an inclined base plate; 9-U-shaped bolts; 10-U-shaped bolt bottom plates, 11-drive axles and 12-upper supports of shock absorbers; 13-damper, 14-air spring, 15-air spring top plate, 16-transverse thrust rod, 17-transverse thrust rod bracket, 51-connecting plate, 52-guide shaft, 53-rib, 71-boss feature, 72-arc hole.
Detailed Description
The following describes the utility model in further detail, including preferred embodiments, by way of the accompanying drawings and by way of examples of some alternative embodiments of the utility model. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Further, in the present utility model, relational terms such as "first" and "second", and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Example 1
The utility model discloses a composite air suspension protection structure integrating a limiting function, which comprises a frame 1, a drive axle 11, a guide arm 4 and an air spring 6, wherein the middle part of the guide arm 4 is connected with the drive axle 11 through a U-shaped bolt connecting component 9, one end of the guide arm 4 is hinged with a guide arm fixing support 2 through a pin shaft 3, the guide arm fixing support 2 is fixedly connected with the frame 1, the other end of the guide arm 3 is connected with the air spring 6, the air spring 6 is fixedly connected with the frame 1, the U-shaped bolt connecting component 9 comprises a cover plate 7 positioned above the guide arm 4, a guide rod 5 is arranged on the frame 1, a boss feature 71 is arranged on the cover plate 7, the boss feature 71 comprises an arc-shaped hole 72, the arc-shaped hole 72 is connected with the guide rod 5 in a sliding fit manner, and the rotation central axis of the arc-shaped hole 72 is collinear with the central axis of the pin shaft 3. The guide rod 5 and the arc-shaped hole 72 cooperate to realize the upper and lower limit of the guide arm 4, and the specific working principle is as follows:
when the air suspension is in an idle and full-load position, the guide rod 5 is in the middle position in the arc-shaped hole 72, and when the driving axle 11 jumps upwards, the cover plate 7 jumps upwards along with the driving axle 11, the lower end of the arc-shaped hole 72 is in contact with the guide rod 5, and the driving axle 11 cannot jump upwards continuously, so that the upper limit is realized; when the driving axle 11 jumps down, the cover plate 7 jumps down along with the driving axle 11, the upper end of the arc-shaped hole 72 on the cover plate 7 is contacted with the guide rod 5, the driving axle 11 cannot jump down continuously, and lower limit is realized;
when the drive axle 11 jumps upwards, the limit block assembly disclosed by CN208277780U is not used for limiting any more, the limit block assembly can be canceled, the limit block belongs to a vulnerable part, rubber is easy to crush, and after the scheme is changed, the maintenance and replacement cost can be reduced;
when the driving axle 11 jumps downwards, the lower limit is not performed through the shock absorber disclosed by CN208277780U, the shock absorber can use a common shock absorber without a lower limit function, and the cost of the common shock absorber can be reduced;
when the guide arm 4 breaks, the drive axle 11 is hung on the guide rod 5 through the arc-shaped hole 72, the cover plate arc-shaped structure is prevented from being separated from the guide rod 5, the whole vehicle can normally run, and the single guide arm can be protected.
Example 2
The utility model discloses a composite air suspension protection structure integrating a limiting function, which comprises a frame 1, a drive axle 11, a guide arm 4 and an air spring 6, wherein the middle part of the guide arm 4 is connected with the drive axle 11 through a U-shaped bolt connecting component 9, one end of the guide arm 4 is hinged with a guide arm fixing bracket 2 through a pin shaft 3, the guide arm fixing bracket 2 is fixedly connected with the frame 1, the other end of the guide arm 3 is connected with the air spring 6, the air spring 6 is fixedly connected with the frame 1, the U-shaped bolt connecting component 9 comprises a cover plate 7 positioned above the guide arm 4, a guide rod 5 is arranged on the frame 1, a boss feature 71 is arranged on the cover plate 7, the boss feature 71 comprises an arc hole 72, the arc hole 72 is connected with the guide rod 5 in a sliding fit manner, and the rotation central axis of the arc hole 72 is collinear with the central axis of the pin shaft 3; the guide rod 5 is in a stepped shaft shape, the small-diameter end of the guide rod 5 is in threaded connection with a limiting piece 6, and the diameter of the end head part of the limiting piece 6 is larger than the width of the arc-shaped hole 72. The upper and lower spacing of guide arm 4 has been realized in guide bar 5 and arc hole 72 cooperation, and the existence of locating part 6 can realize the left and right spacing of guide arm 4, and when the drunkenness about drive axle 11 promptly, through the side of boss feature 71 on apron 7 with locating part 6 contact, the drunkenness volume about the restriction drive axle 11, avoid apron 7's arc hole 72 to deviate from guide bar 5, just so realized the spacing to drive axle 11 left and right directions, concrete theory of operation is as follows:
when the air suspension is in an idle and full-load position, the guide rod 5 is in the middle position in the arc-shaped hole 72, and when the driving axle 11 jumps upwards, the cover plate 7 jumps upwards along with the driving axle 11, the lower end of the arc-shaped hole 72 is in contact with the guide rod 5, and the driving axle 11 cannot jump upwards continuously, so that the upper limit is realized; when the driving axle 11 jumps down, the cover plate 7 jumps down along with the driving axle 11, the upper end of the arc-shaped hole 72 on the cover plate 7 is contacted with the guide rod 5, the driving axle 11 cannot jump down continuously, and lower limit is realized;
when the drive axle 11 jumps upwards, the limit block assembly disclosed by CN208277780U is not used for limiting any more, the limit block assembly can be canceled, the limit block belongs to a vulnerable part, rubber is easy to crush, and after the scheme is changed, the maintenance and replacement cost can be reduced;
when the driving axle 11 jumps downwards, the lower limit is not performed through the shock absorber disclosed by CN208277780U, the shock absorber can use a common shock absorber without a lower limit function, and the cost of the common shock absorber can be reduced;
when the guide arm 4 breaks, the drive axle 11 is hung on the guide rod 5 through the arc-shaped hole 72, the limiting piece 6 is installed on the internal thread hole of the guide rod 5, the boss feature 71 of the cover plate is prevented from being separated from the guide rod 5, the whole vehicle can normally run, the protection effect can be achieved on a single guide arm, meanwhile, the left-right movement of the drive axle 11 can be limited, and the left-right limiting is realized.
Example 3
The utility model discloses a composite air suspension protection structure integrating a limiting function, which comprises a frame 1, a drive axle 11, a guide arm 4 and an air spring 6, wherein the middle part of the guide arm 4 is connected with the drive axle 11 through a U-shaped bolt connecting component 9, one end of the guide arm 4 is hinged with a guide arm fixing bracket 2 through a pin shaft 3, the guide arm fixing bracket 2 is fixedly connected with the frame 1, the other end of the guide arm 3 is connected with the air spring 6, the air spring 6 is fixedly connected with the frame 1, the U-shaped bolt connecting component 9 comprises a cover plate 7 positioned above the guide arm 4, a guide rod 5 is arranged on the frame 1, a boss feature 71 is arranged on the cover plate 7, the boss feature 71 comprises an arc hole 72, the arc hole 72 is connected with the guide rod 5 in a sliding fit manner, and the rotation central axis of the arc hole 72 is collinear with the central axis of the pin shaft 3; the guide rod 5 is round rod-shaped, one end thread connection of the guide rod 5 has a limiting piece 6, the diameter of the end head of the limiting piece 6 is larger than the width of the arc-shaped hole 72, and the outer peripheral surface of the guide rod 5 is provided with a rib plate 53 which is matched with the limiting piece 6 to realize left and right limiting of the guide arm 4. The upper and lower spacing of guide arm 4 has been realized in guide bar 5 and arc hole 72 cooperation, and the existence of locating part 6 can realize the left and right spacing of guide arm 4, and when the drunkenness about drive axle 11 promptly, through the side of boss feature 71 on apron 7 with locating part 6 contact, the drunkenness volume about the restriction drive axle 11, avoid apron 7's arc hole 72 to deviate from guide bar 5, just so realized the spacing to drive axle 11 left and right directions, concrete theory of operation is as follows:
when the air suspension is in an idle and full-load position, the guide rod 5 is in the middle position in the arc-shaped hole 72, and when the driving axle 11 jumps upwards, the cover plate 7 jumps upwards along with the driving axle 11, the lower end of the arc-shaped hole 72 is in contact with the guide rod 5, and the driving axle 11 cannot jump upwards continuously, so that the upper limit is realized; when the driving axle 11 jumps down, the cover plate 7 jumps down along with the driving axle 11, the upper end of the arc-shaped hole 72 on the cover plate 7 is contacted with the guide rod 5, the driving axle 11 cannot jump down continuously, and lower limit is realized;
when the drive axle 11 jumps upwards, the limit block assembly disclosed by CN208277780U is not used for limiting any more, the limit block assembly can be canceled, the limit block belongs to a vulnerable part, rubber is easy to crush, and after the scheme is changed, the maintenance and replacement cost can be reduced;
when the driving axle 11 jumps downwards, the lower limit is not performed through the shock absorber disclosed by CN208277780U, the shock absorber can use a common shock absorber without a lower limit function, and the cost of the common shock absorber can be reduced;
when the guide arm 4 breaks, the drive axle 11 is hung on the guide rod 5 through the arc-shaped hole 72, the limiting piece 6 is installed on the internal thread hole of the guide rod 5, the boss feature 71 of the cover plate is prevented from being separated from the guide rod 5, the whole vehicle can normally run, the protection effect can be achieved on a single guide arm, meanwhile, the left-right movement of the drive axle 11 can be limited, and the left-right limiting is realized.
Example 4:
the utility model discloses a composite air suspension protection structure integrating a limiting function, which is suitable for military vehicles and comprises a frame 1, a drive axle 11, a guide arm 4 and an air spring 6. Unlike the previous embodiment, an elastic pad 8 is provided on the top of the guide rod 5, and the elastic pad 8 is matched with the guide rod 5, so that when the drive axle 11 jumps down, the elastic pad 8 is compressed, thereby realizing lower limit. The structure not only provides a limiting function, but also can absorb a part of impact force, and reduces the influence on the structure of the vehicle.
Example 5:
the utility model discloses a composite air suspension protection structure integrating a limiting function, which is suitable for public transportation vehicles and comprises a frame 1, a drive axle 11, a guide arm 4 and an air spring 6. Unlike the previous embodiments, one end of the guide arm 4 is connected to the frame 1 by a hydraulic cylinder 13, and the hydraulic cylinder 13 can control the up-and-down movement of the guide arm 4. When the drive axle 11 jumps upwards, the hydraulic cylinder 13 can control the guide arm 4 to move downwards to realize upper limit; when the drive axle 11 jumps downwards, the hydraulic cylinder 13 can realize lower limit by controlling the upward movement of the guide arm 4. The mode is limited through hydraulic control, the limiting position can be adjusted more accurately, and the method is suitable for scenes with high requirements on limiting precision.
Example 6:
the utility model discloses a composite air suspension protection structure integrating a limiting function, which is suitable for an off-road vehicle and comprises a frame 1, a drive axle 11, a guide arm 4 and an air spring 6. In order to realize the limiting function, one end of the guide arm 4 is hinged with the frame 1, and the other end of the guide arm 4 is connected with the guide rod 5 through the pin shaft 3. The guide rod 5 is provided with a plurality of grooves, the frame 1 is fixedly provided with protruding pins, and when the drive axle 11 jumps upwards, the protruding pins can be clamped in the grooves of the guide rod 5, so that upper limit is realized. Similarly, when the drive axle 11 jumps down, the protruding pin will catch in the other groove of the guide bar 5, achieving a lower limit.
Example 7:
the utility model discloses a composite air suspension protection structure integrating a limiting function, which is suitable for urban buses and comprises a frame 1, a drive axle 11, a guide arm 4 and an air spring 6. An adjustable stop is provided at the connecting portion of the guide arm 4. The limiting device consists of a screw rod, one end part of the screw rod is connected with the frame 1, and the other end part of the screw rod is connected with the guide arm 4. Limit control during the up-and-down jump of the drive axle 11 can be realized by adjusting the length of the screw rod, thereby achieving the effects of protection and stability.
Example 8:
the utility model discloses a composite air suspension protection structure integrating a limiting function, which is suitable for special vehicles and comprises a frame 1, a drive axle 11, a guide arm 4 and an air spring 6. In this embodiment, the limit function is achieved by hydraulic control. One end of the guide arm 4 is connected to the frame 1 by a hydraulic cylinder which can control the up and down movement of the guide arm. When the drive axle 11 jumps upwards, the hydraulic cylinder can adjust the downward movement of the guide arm, so that the upper limit is realized; when the driving axle 11 jumps downwards, the hydraulic cylinder can control the guide arm to move upwards, so that the lower limit is realized. The hydraulic control mode can accurately control the limit position, and is suitable for vehicles with special requirements.
The optimization solutions for examples 1-8 are as follows:
in a preferred embodiment of the utility model, the boss feature 71 and cover plate 7 may be cast integrally or welded separately.
In a preferred embodiment of the utility model, the stop 6 comprises a screw or bolt.
In a preferred embodiment of the utility model, the guide bar 5 is provided with a threaded hole for attachment of a stop 6.
In a preferred embodiment of the present utility model, the guide bar 5 includes a connection plate 51 and a guide shaft 52, and a central axis of the guide shaft 52 is perpendicular to the connection plate 51.
In a preferred embodiment of the present utility model, the inner peripheral wall of the arcuate aperture 72 is provided with vulcanized rubber.
In a preferred embodiment of the present utility model, the guide bar 5 is provided with vulcanized rubber on its outer peripheral wall.
In a preferred embodiment of the utility model, the central axis of the guide bar 5 is perpendicular to the central axis of the frame 1.
The utility model also discloses a vehicle, which comprises the composite air suspension protection structure integrating the limiting function.
Further, it should be noted that the preamble part, such as the frame 1, the driving axle 11, the guiding arm 4 and the air spring 6, which are not developed in detail in the present utility model, the middle part of the guiding arm 4 is connected with the driving axle 11 through the U-shaped bolt connecting assembly 9, one end of the guiding arm 4 is hinged with the guiding arm fixing support 2 through the pin shaft 3, the guiding arm fixing support 2 is fixedly connected with the frame 1, the other end of the guiding arm 3 is connected with the air spring 6, the air spring 6 is fixedly connected with the frame 1, the U-shaped bolt connecting assembly 9 includes the cover plate 7 above the guiding arm 4, and the structure and the connection relationship thereof can refer to the disclosure of the prior art such as the patent CN208277780U, CN112895806A, CN110539601A, CN112937245A, CN 207630896U.
It will be readily understood by those skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present utility model and that various modifications, combinations, substitutions, improvements, etc. may be made without departing from the spirit and principles of the utility model.

Claims (10)

1. The utility model provides a compound air suspension protection architecture of integrated limit function, includes frame (1), transaxle (11), guide arm (4) and air spring (6), the middle part of guide arm (4) is connected with transaxle (11) through U type bolted connection subassembly (9), the one end of guide arm (4) is articulated with guide arm fixed bolster (2) through round pin axle (3), guide arm fixed bolster (2) and frame (1) rigid coupling, the other end and the air spring (6) of guide arm (3) are connected, air spring (6) and frame (1) rigid coupling, U type bolted connection subassembly (9) are including being located apron (7) of guide arm (4) top, its characterized in that: be provided with guide bar (5) on frame (1), be provided with boss characteristic (71) on apron (7), boss characteristic (71) include arc hole (72), arc hole (72) with guide bar (5) sliding fit is connected, the rotation central axis of arc hole (72) with the central axis collineation of round pin axle (3).
2. The composite air suspension protection structure integrating limiting function as claimed in claim 1, wherein: the guide rod (5) is in a stepped shaft shape, a small-diameter end of the guide rod (5) is in threaded connection with a limiting piece (6), and the diameter of the end head of the limiting piece (6) is larger than the width of the arc-shaped hole (72).
3. The composite air suspension protection structure integrating limiting function as claimed in claim 1, wherein: the guide rod (5) is round rod-shaped, one end thread of the guide rod (5) is connected with a limiting piece (6), the diameter of the end head of the limiting piece (6) is larger than the width of the arc-shaped hole (72), and a rib plate (53) which is matched with the limiting piece (6) to limit the guide arm (4) left and right is arranged on the outer peripheral surface of the guide rod (5).
4. A composite air suspension protection structure integrating a limiting function according to claim 2 or 3, characterized in that: the limiting piece (6) comprises a screw or a bolt.
5. The composite air suspension protection structure integrating limiting function according to claim 4, wherein: the guide rod (5) is provided with a threaded hole for connecting the limiting piece (6).
6. The composite air suspension protection structure integrating limiting function as claimed in claim 1, wherein: the guide rod (5) comprises a connecting plate (51) and a guide shaft (52), and the central axis of the guide shaft (52) is perpendicular to the connecting plate (51).
7. The composite air suspension protection structure integrating limiting function as claimed in claim 1, wherein: vulcanized rubber is arranged on the inner peripheral wall of the arc-shaped hole (72).
8. The composite air suspension protection structure integrating limiting function as claimed in claim 1, wherein: vulcanized rubber is arranged on the outer peripheral wall of the guide rod (5).
9. The composite air suspension protection structure integrating limiting function as claimed in claim 1, wherein: the central axis of the guide rod (5) is perpendicular to the different plane of the central axis of the frame (1).
10. A vehicle, characterized in that: a composite air suspension protection structure comprising an integrated limit function according to any one of claims 1-9.
CN202311269447.4A 2023-09-28 2023-09-28 Combined type air suspension protection architecture of integrated limit function Pending CN117048266A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311269447.4A CN117048266A (en) 2023-09-28 2023-09-28 Combined type air suspension protection architecture of integrated limit function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311269447.4A CN117048266A (en) 2023-09-28 2023-09-28 Combined type air suspension protection architecture of integrated limit function

Publications (1)

Publication Number Publication Date
CN117048266A true CN117048266A (en) 2023-11-14

Family

ID=88667704

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311269447.4A Pending CN117048266A (en) 2023-09-28 2023-09-28 Combined type air suspension protection architecture of integrated limit function

Country Status (1)

Country Link
CN (1) CN117048266A (en)

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