CN112297737A - Commercial car lift bridge suspension structure - Google Patents
Commercial car lift bridge suspension structure Download PDFInfo
- Publication number
- CN112297737A CN112297737A CN202011080705.0A CN202011080705A CN112297737A CN 112297737 A CN112297737 A CN 112297737A CN 202011080705 A CN202011080705 A CN 202011080705A CN 112297737 A CN112297737 A CN 112297737A
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- China
- Prior art keywords
- guide arm
- air bag
- lifting
- lug
- supporting bracket
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/006—Attaching arms to sprung or unsprung part of vehicle, characterised by comprising attachment means controlled by an external actuator, e.g. a fluid or electrical motor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention relates to a commercial vehicle lifting axle suspension structure, which comprises: support bracket, lift gasbag, guide arm and bearing airbag. The guide arm is connected with the axle; the front end of the guide arm is hinged with the supporting bracket; the lower end of the lifting air bag is connected with the supporting bracket, and the upper end of the lifting air bag is fixedly connected with the guide arm; the lower end of the bearing air bag is connected with the tail end of the guide arm. According to the suspension structure of the commercial vehicle lifting axle, the upper end of the lifting air bag is directly connected with the guide arm, so that elements such as an upper swing arm of a lifting mechanism are omitted, and the problem that the size of the mounting space of the lifting air bag is small is solved. The acting force of the lifting air bag is directly transmitted to the guide arm, so that the abrasion of the guide arm and the noise in the lifting motion are avoided; the guide arm and the lifting air bag are integrated, the influence of a transmission shaft can be effectively avoided, the lifting axle suspension structure can be arranged in front of a drive axle, and is suitable for being arranged behind the drive axle to be used, so that the suspension is good in universality.
Description
Technical Field
The invention relates to the technical field of automobile parts, in particular to a suspension structure of a lifting axle of a commercial vehicle.
Background
The lift axle suspension system plays a role of auxiliary support in the commercial vehicle, and means that the lifting and falling of an axle are completed through the suspension system. When the vehicle is in no-load or light-load, the lifting axle suspension system is used for lifting the air bag to work, and lifting the supporting axle away from the road surface, so that the oil consumption can be reduced and the tire wear can be reduced; when the vehicle is fully loaded, the supporting bridge is dropped and loaded by operating the gas circuit control system, so that the axle load of the vehicle is redistributed, other axles are prevented from being overloaded, and the overload of the whole vehicle can be effectively avoided.
The existing lifting bridge suspension is generally realized by a lifting air bag and a motion mechanism, the lower end of the lifting air bag is fixedly connected with the lower end of a support bracket, the upper end of the lifting air bag is connected with a lifting swing arm, the other end of the lifting swing arm is hinged with a guide arm bracket, and the rotation center of an upper swing arm is coincided with or not coincided with the swing center of the guide arm. The lifting swing arm is driven to move upwards to realize the lifting of the axle fixed on the guide arm by controlling the lifting air bag to inflate and simultaneously exhausting the bearing air bag. The existing hoisting bridge suspension has the following problems: go up the swing arm design structure complicacy, have to sacrifice the trafficability characteristic of vehicle for solving the promotion gasbag installation space problem, and there is the wearing and tearing phenomenon between the connecting block that is fixed in the swing arm and the guide arm to produce the noise easily.
Firstly, will promote the gasbag and arrange at the axle dead ahead intermediate position as patent "a rear lifting axle air suspension system of tractor", promote the gasbag support and be the cantilever form with axle fixed connection (or with the axle welding), the promotion gasbag trailing arm that is fixed in the frame both sides is connected with promotion gasbag lower extreme and is the U type form, promote the support and promote the gasbag trailing arm and reduced whole set of suspension system lightweight level because of space erection dimension and intensity requirement, and can not effectively avoid the influence of transmission shaft, can only avoid arranging and use at the rear of transaxle.
Firstly, will promote the gasbag and arrange at the axle dead ahead intermediate position like patent "a heavy truck promotes air suspension system", promote the support and be connected through the transition support with axle fixed connection, install the fixed bolster of inboard frame and promote the gasbag lower extreme and be connected and be the U type form, fixed bolster and transition support have reduced whole set of suspension system lightweight level because of space installation size and intensity requirement, and can not effectively avoid the influence of transmission shaft, can only arrange and use at the transaxle back.
Disclosure of Invention
The invention provides a commercial vehicle lifting axle suspension structure, aiming at the technical problems that in the prior art, the upper swing arm is complex in design structure, the suspension system is low in light weight and level, the size of a lifting air bag installation space is small, abrasion phenomenon exists between a connecting block fixed on the upper swing arm and a guide arm, noise is easy to generate, and the suspension is limited in the arrangement of a whole vehicle.
The technical scheme for solving the technical problems is as follows:
a commercial vehicle lift axle suspension arrangement comprising: the lifting air bag comprises a supporting bracket, a lifting air bag, a guide arm and a bearing air bag;
the guide arm is connected with the axle; the front end of the guide arm is hinged with the supporting bracket; the lower end of the lifting air bag is connected with the supporting bracket, and the upper end of the lifting air bag is fixedly connected with the guide arm; the lower end of the bearing air bag is connected with the tail end of the guide arm.
Further, the method also comprises the following steps: a fixed support;
the fixed support is of a U-shaped structure; the bottom of the fixed support is connected with the upper end of the lifting air bag; the upper end of the fixed support is fixed on the guide arm through a fastener.
Further, the method also comprises the following steps: a spacer sleeve;
the outer wall of the spacer sleeve is provided with a rubber layer; the spacer sleeve is arranged on the inner side of the fixed support and is positioned above the guide arm, and the outer wall of the spacer sleeve is abutted to the guide arm.
Further, the method also comprises the following steps: a pin shaft;
the front end of the guide arm is hinged with the supporting bracket through the pin shaft.
Further, the guide arm includes: the main sheet, the lug wrapping sheet and the composite lining;
the front end of the main sheet is provided with a lug curling part, and the composite bushing is fixed in an ear hole in the lug curling part; the front end of the lug wrapping sheet is provided with a curved surface structure matched with the lug rolling part, the lug rolling part is arranged on the inner side of the curved surface structure, and the main sheet is fixed with the lug wrapping sheet through a central bolt;
the pin shaft penetrates through the composite bushing to hinge the composite bushing to the supporting bracket;
the main sheet and the lug wrapping sheet are positioned on the inner side of the supporting bracket, the main sheet is abutted against the spacer bush, the end face of the spacer bush is abutted against the inner side of the supporting bracket, and the lug wrapping sheet is abutted against the bottom of the fixed support.
Further, the method also comprises the following steps: a U-shaped bolt;
the guide arm is fixedly connected with the axle through the U-shaped bolt.
The suspension structure of the lifting axle of the commercial vehicle provided by the invention at least has the following beneficial effects or advantages:
according to the suspension structure of the commercial vehicle lifting axle, the front end of the guide arm is hinged with the supporting bracket; the lower end of the lifting air bag is connected with the supporting bracket, and the upper end of the lifting air bag is connected with the guide arm; the lower end of the bearing air bag is connected with the tail end of the guide arm. According to the suspension structure of the commercial vehicle lifting axle, the upper end of the lifting air bag is directly connected with the guide arm, so that elements such as an upper swing arm of the lifting mechanism are omitted, the lifting mechanism is greatly simplified and is beneficial to suspension assembly, the problem that the mounting space of the lifting air bag is small in size is indirectly solved, the ground clearance of the suspension is improved, and the vehicle trafficability is improved; the acting force of the lifting air bag is directly transmitted to the guide arm, so that the abrasion of the guide arm and the noise in the lifting motion are avoided; because the lifting air bag and the optimal design of the guide arm are integrated, the lightweight design level of the suspension system is improved, and the influence of a transmission shaft is avoided, so that the suspension can be arranged in front of a drive axle and is suitable for being arranged behind the drive axle, and the problem of the universality of the suspension is solved.
Drawings
FIG. 1 is a schematic diagram of a suspension structure of a lift axle of a commercial vehicle according to an embodiment of the present invention;
FIG. 2 is a top view of a suspension structure of a lift bridge of a commercial vehicle according to an embodiment of the present invention;
FIG. 3 is a schematic mounting diagram of a suspension structure of a lift axle of a commercial vehicle according to an embodiment of the invention;
fig. 4 is a schematic perspective view of a suspension of a lift bridge of a commercial vehicle according to an embodiment of the invention.
In the drawings, the components represented by the respective reference numerals are listed below:
the automobile wheel suspension device comprises a guide arm 1, an axle 2, a main piece 11, a main piece 12, a lug wrapping piece 13, a composite bushing 21, a fixed support 22, a fastener 23, a spacer bush 3, a lifting air bag 4, a supporting bracket 5, a pin shaft 6, a U-shaped bolt 7, a bearing air bag 8 and a shock absorber.
Detailed Description
The invention provides a suspension structure of a lifting axle of a commercial vehicle, aiming at the technical problems that the design structure of an upper swing arm in the prior art is complex, abrasion phenomenon exists between a connecting block fixed on the upper swing arm and a guide arm, and noise is easy to generate.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a suspension structure of a lifting axle of a commercial vehicle, which is shown in figures 1-4 and comprises the following components: the device comprises a supporting bracket 4, a lifting air bag 3, a guide arm 1, an axle 2, a pin shaft 5, a U-shaped bolt 6, a fixed support 21, a spacer 23 and a bearing air bag 7. Wherein:
the guide arm 1 is of a bent structure, and the guide arm 1 is fixedly connected with the axle 2 through a U-shaped bolt 6; the front end of the guide arm 1 is hinged to the supporting bracket 4, specifically, the front end of the guide arm 1 is hinged to the supporting bracket 4 through a pin shaft 5, and the front end of the guide arm 1 can swing within a certain angle around a hinged point. The lower end of the lifting air bag 3 is connected with the supporting bracket 4, the upper end of the lifting air bag 3 is fixedly connected with the guide arm 1 through a fixed support 21, the fixed support 21 and the guide arm 1 are positioned through a boss, and the lifting air bag 3 is used for driving the guide arm 1 to lift upwards; the lower end of the bearing air bag 7 is connected with the tail end of the guide arm 1.
The fixed support 21 is set to be a U-shaped structure; the bottom of the fixed support 21 is connected with the upper end of the lifting air bag 3; the upper end of the fixed bracket 21 is fixed to the guide arm 1 by a fastener 22. The outer wall of the spacer sleeve 23 is provided with a rubber layer; spacer 23 is arranged inside fixed support 21 and above guide arm 1, the outer wall of spacer 23 is abutted against guide arm 1, and fastener 22 passes through spacer 23. The outer wall of the spacer 23 is vulcanized with a rubber layer, the length of the rubber layer is matched with the width of the guide arm 1, the fastener 22 penetrates through the fixed support 21 and the spacer 23 to be laterally clamped with the guide arm 1, and meanwhile, the spacer 23 ensures that the bottom of the fixed support 21 is attached to the bottom surface of the lug plate 12 through radial deformation of the rubber layer.
In a preferred embodiment of the present invention, referring to fig. 1 to 3, in order to make the front end of the guide arm 1 swing stably and reliably and improve the service life, the guide arm 1 includes: main piece 11, lug piece 12 and composite liner 13. The front end of the main sheet 11 is provided with a curling part, and the composite bushing 13 is fixed in an ear hole in the curling part; the front end of the lug wrapping sheet 12 is arranged to be a curved surface structure matched with the lug rolling part, the lug rolling part is arranged on the inner side of the curved surface structure, and the main sheet 11 is fixed with the lug wrapping sheet 12 through a central bolt. The pin 5 penetrates through the composite bush 13 to hinge the composite bush 13 on the supporting bracket 4. The main sheet 11 and the ear wrapping sheet 12 are positioned inside the fixed support 21, the main sheet 11 is abutted with the spacer 23, the end face of the spacer 23 is abutted with the inner side of the support bracket 4, and the ear wrapping sheet 12 is abutted with the bottom of the fixed support 21.
Referring to fig. 1 to 3, the working principle of the suspension structure of the lift bridge of the commercial vehicle provided by the embodiment of the invention is as follows: when the vehicle is fully loaded, the bearing air bag 7 and the guide arm 1 bear the load of the vehicle together, and the shock absorber 8 plays roles in damping vibration and limiting the suspension jump; when the vehicle is in no-load, the air path control system realizes the inflation extension of the lifting air bag 3 and the exhaust compression of the bearing air bag 7, and directly drives the guide arm 1 to swing upwards around the pin shaft 5, so that the lifting motion of the axle is realized, and the size of the swing angle (namely the lifting height of the axle) is determined by a limit block fixed on the supporting bracket. The fixed support 21 is fixedly connected with the guide arm 1, and no relative movement exists between the fixed support and the guide arm, so that no abrasion and no noise exist. The acting force of the lifting air bag 3 is directly transmitted to the guide arm 1, so that the abrasion of the guide arm 1 and the noise in the lifting motion are avoided; because the lifting air bag 3 and the guide arm 1 are optimally designed into a whole, the lightweight design level of the suspension system is improved, and the influence of a transmission shaft is avoided, so that the suspension can be arranged in front of a drive axle and is suitable for being arranged behind the drive axle for use, and the whole vehicle arrangement design or vehicle modification is facilitated.
The suspension structure of the lifting axle of the commercial vehicle provided by the embodiment of the invention at least has the following beneficial effects or advantages:
according to the suspension structure of the commercial vehicle lifting axle provided by the embodiment of the invention, the front end of the guide arm is hinged with the supporting bracket; the lower end of the lifting air bag is connected with the supporting bracket, and the upper end of the lifting air bag is connected with the guide arm; the lower end of the bearing air bag is connected with the tail end of the guide arm. According to the suspension structure of the commercial vehicle lifting axle provided by the embodiment of the invention, the upper end of the lifting air bag is directly connected with the guide arm, so that elements such as an upper swing arm of the lifting mechanism are omitted, the lifting mechanism is greatly simplified and is beneficial to suspension assembly, meanwhile, the problem of small installation space size of the lifting air bag is solved, the ground clearance of the suspension is improved, and the vehicle trafficability is improved; the acting force of the lifting air bag is directly transmitted to the guide arm, so that the abrasion of the guide arm and the noise in the lifting motion are avoided; because the lifting air bag and the optimal design of the guide arm are integrated, the lightweight design level of the suspension system is improved, and the influence of a transmission shaft is avoided, so that the suspension can be arranged in front of a drive axle and is suitable for being arranged behind the drive axle for use, and the whole vehicle arrangement design or vehicle modification is facilitated.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A commercial car lift axle suspension structure characterized in that includes: a supporting bracket (4), a lifting air bag (3), a guide arm (1) and a bearing air bag (7);
the guide arm (1) is connected with an axle; the front end of the guide arm (1) is hinged with the supporting bracket (4); the lower end of the lifting air bag (3) is connected with the supporting bracket (4), and the upper end of the lifting air bag (3) is fixedly connected with the guide arm (1); the lower end of the bearing air bag (7) is connected with the tail end of the guide arm (1).
2. The commercial vehicle lift axle suspension structure of claim 1, further comprising: a fixed support (21);
the fixed support (21) is of a U-shaped structure; the bottom of the fixed support (21) is connected with the upper end of the lifting air bag (3); the upper end of the fixed support (21) is fixed on the guide arm (1) through a fastener (22).
3. The commercial vehicle lift axle suspension structure of claim 2, further comprising: a spacer sleeve (23);
a rubber layer is arranged on the outer wall of the spacer sleeve (23); the spacer bush (23) is arranged on the inner side of the fixed support (21) and located above the guide arm (1), and the outer wall of the spacer bush (23) is abutted to the guide arm (1).
4. The commercial vehicle lift axle suspension structure of claim 1, further comprising: a pin (5);
the front end of the guide arm (1) is hinged with the supporting bracket (4) through the pin shaft (5).
5. Commercial vehicle lift axle suspension construction according to claim 4, characterized in that the pilot arm (1) comprises: a main sheet (11), a lug wrapping sheet (12) and a composite lining (13);
the front end of the main sheet (11) is provided with a lug part, and the composite bushing (13) is fixed in an ear hole in the lug part; the front end of the lug wrapping piece (12) is provided with a curved surface structure matched with the lug rolling part, the lug rolling part is arranged on the inner side of the curved surface structure, and the main piece (11) is fixed with the lug wrapping piece (12) through a central bolt;
the pin shaft (5) penetrates through the composite bushing (13) to hinge the composite bushing (13) on the supporting bracket (4);
the main sheet (11) and the lug wrapping sheet (12) are located on the inner side of the fixed support (21), the main sheet (11) is abutted to the spacer bush (23), the end face of the spacer bush (23) is abutted to the inner side of the supporting bracket (4), and the lug wrapping sheet (12) is abutted to the bottom of the fixed support (21).
6. The commercial vehicle lift axle suspension structure of claim 1, further comprising: a U-shaped bolt (6);
the guide arm (1) is fixedly connected with the axle through the U-shaped bolt (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011080705.0A CN112297737A (en) | 2020-10-10 | 2020-10-10 | Commercial car lift bridge suspension structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011080705.0A CN112297737A (en) | 2020-10-10 | 2020-10-10 | Commercial car lift bridge suspension structure |
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| Publication Number | Publication Date |
|---|---|
| CN112297737A true CN112297737A (en) | 2021-02-02 |
Family
ID=74488312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011080705.0A Pending CN112297737A (en) | 2020-10-10 | 2020-10-10 | Commercial car lift bridge suspension structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN112297737A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114953887A (en) * | 2022-05-18 | 2022-08-30 | 东风华神汽车有限公司 | Intelligent control system and method for load of lift bridge of truck |
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| US5655788A (en) * | 1993-03-09 | 1997-08-12 | Ror Rockwell Limited | Vehicle air suspension having a lifting system |
| CN201009701Y (en) * | 2007-01-25 | 2008-01-23 | 青岛锐德世达科技有限公司 | Air suspension device for lifting axle of air amortization |
| CN202923327U (en) * | 2012-09-29 | 2013-05-08 | 佛山市永力泰车轴有限公司 | Support integrated air suspension assembly with lifting guide arm |
| CN103707732A (en) * | 2013-12-31 | 2014-04-09 | 重庆红岩方大汽车悬架有限公司 | Guide arm assembly |
| CN203739572U (en) * | 2013-12-31 | 2014-07-30 | 重庆红岩方大汽车悬架有限公司 | Car air suspension guiding arm |
| US20140232080A1 (en) * | 2013-02-20 | 2014-08-21 | Saf-Holland, Inc. | Axle lift assembly |
| CN104015578A (en) * | 2014-05-20 | 2014-09-03 | 湖南易通汽车配件科技发展有限公司 | Air suspension system of multi-axle semi-trailer |
| CN105329059A (en) * | 2014-08-07 | 2016-02-17 | 陕西重型汽车有限公司 | Heavy-duty truck and air sac lifting and bearing back suspension rack system |
| CN108146179A (en) * | 2016-12-06 | 2018-06-12 | 湖北万柯汽车零部件有限公司 | Automotive airbag suspension |
| CN210363249U (en) * | 2019-08-28 | 2020-04-21 | 山东曼迪普机械有限公司 | Air suspension for load tractor |
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2020
- 2020-10-10 CN CN202011080705.0A patent/CN112297737A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5655788A (en) * | 1993-03-09 | 1997-08-12 | Ror Rockwell Limited | Vehicle air suspension having a lifting system |
| CN201009701Y (en) * | 2007-01-25 | 2008-01-23 | 青岛锐德世达科技有限公司 | Air suspension device for lifting axle of air amortization |
| CN202923327U (en) * | 2012-09-29 | 2013-05-08 | 佛山市永力泰车轴有限公司 | Support integrated air suspension assembly with lifting guide arm |
| US20140232080A1 (en) * | 2013-02-20 | 2014-08-21 | Saf-Holland, Inc. | Axle lift assembly |
| CN103707732A (en) * | 2013-12-31 | 2014-04-09 | 重庆红岩方大汽车悬架有限公司 | Guide arm assembly |
| CN203739572U (en) * | 2013-12-31 | 2014-07-30 | 重庆红岩方大汽车悬架有限公司 | Car air suspension guiding arm |
| CN104015578A (en) * | 2014-05-20 | 2014-09-03 | 湖南易通汽车配件科技发展有限公司 | Air suspension system of multi-axle semi-trailer |
| CN105329059A (en) * | 2014-08-07 | 2016-02-17 | 陕西重型汽车有限公司 | Heavy-duty truck and air sac lifting and bearing back suspension rack system |
| CN108146179A (en) * | 2016-12-06 | 2018-06-12 | 湖北万柯汽车零部件有限公司 | Automotive airbag suspension |
| CN210363249U (en) * | 2019-08-28 | 2020-04-21 | 山东曼迪普机械有限公司 | Air suspension for load tractor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114953887A (en) * | 2022-05-18 | 2022-08-30 | 东风华神汽车有限公司 | Intelligent control system and method for load of lift bridge of truck |
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Application publication date: 20210202 |
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| RJ01 | Rejection of invention patent application after publication |