CN217804216U

CN217804216U - Single swing arm air suspension

Info

Publication number: CN217804216U
Application number: CN202221923922.6U
Authority: CN
Inventors: 闫兴坤; 陈晃; 徐琪钰; 杨光; 孙志刚; 高蕊
Original assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Current assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-11-15
Anticipated expiration: 2032-07-25

Abstract

The utility model discloses a single swing arm air suspension, which comprises a frame, a large bracket and single swing arms, wherein the large bracket is arranged on the frame in a bilateral symmetry way, the front ends of the four single swing arms are connected with the large bracket through detachable pin shafts, and the tail ends of the four single swing arms are connected with a connecting beam assembly; a middle bridge is arranged on the front two single swing arms, a rear bridge is arranged on the rear two single swing arms, and the middle bridge and the rear bridge are detachably connected to the front single swing arms and the rear single swing arms through a lower plate spring support, an upper bridge pressure plate and a riding bolt respectively; the rear sides of the middle axle and the rear axle are symmetrically provided with a shock absorber assembly and an air spring assembly respectively, the shock absorber assemblies are arranged on the lower plate spring support, and the air spring assemblies are arranged between the connecting beam assembly and the frame; and transverse pull rod assemblies are respectively connected between the middle axle and the frame as well as between the rear axle and the frame. The utility model reduces the cost while reducing the weight, and improves the fuel economy; the eccentric wear of the tires is reduced, and the vehicle body is more stable.

Description

Single swing arm air suspension

Technical Field

The utility model relates to a single swing arm air suspension belongs to automotive suspension technical field.

Background

With the development trend of world environmental protection and the gradual improvement of a low-carbon development target system actively coping with climate change in China, and the gradual deep consciousness of low-carbon environmental protection and low-carbon life, the environment-friendly society has accelerated the pace of construction, an automobile has a huge cardinal number as an indispensable tool in the life of common people, the energy conservation and emission reduction of the automobile per se also becomes an indispensable ring in the way of accelerating the environment-friendly society, and the light-weight and low-cost vehicle is regarded as a dominant force for solving the energy conservation and emission reduction at present. In addition, with the rapid development of the automotive industry, there is an increasing demand for ride comfort in vehicles and integrity in transporting goods. Vehicle suspensions are essential for the optimization of the suspension as an important link affecting ride comfort and affecting the integrity of cargo transport. And as road conditions gradually improve, the air suspension is more and more widely applied as a high-quality suspension. The air suspension widely used at present is mainly provided with four air springs for a single axle, an I-beam structure is adopted as a balance beam, the upper parts of the axles are connected by using various upper thrust rods to generate enough longitudinal support, and in addition, because the vertical rigidity of the air springs is limited, the air suspension cannot provide enough roll rigidity, and a transverse stabilizer bar is required to provide additional roll rigidity. Due to the arrangement of the structure, the number of parts of the air suspension is too large, the structure is complex, stress concentration easily occurs to the balance beam of the traditional I-beam structure, the influence on the service life is obvious, in addition, due to the limitation of the structure, when the axle jumps up and down, the posture of the automobile body is unstable, the tire eating phenomenon is easily generated so as to influence the performance of the whole automobile, the later maintenance cost is improved, the structure is complex, the weight of related parts is large, and the environment-friendly requirements of light weight and low cost are violated.

Disclosure of Invention

The utility model aims to solve the technical problem that to the defect that prior art exists, provide a simple structure and lightweight, low cost have the single swing arm air suspension of high performance concurrently, overcome the not enough of prior art.

In order to solve the technical problem, the utility model provides a single swing arm air suspension, which comprises a frame, a large bracket and single swing arms, wherein the large bracket is arranged on the frame in a bilateral symmetry manner, two of the large brackets are respectively arranged on the frame, the front ends of the four single swing arms are connected with the large bracket through detachable pin shafts, and the tail ends of the four single swing arms are connected with a connecting beam assembly; a middle bridge is arranged on the front two single swing arms, a rear bridge is arranged on the rear two single swing arms, and the middle bridge and the rear bridge are detachably connected to the front single swing arms and the rear single swing arms through a lower plate spring support, an upper bridge pressure plate and a riding bolt respectively; the rear sides of the middle axle and the rear axle are symmetrically provided with a shock absorber assembly and an air spring assembly respectively, the shock absorber assemblies are arranged on the lower plate spring support, and the air spring assemblies are arranged between the connecting beam assembly and the frame; and transverse pull rod assemblies are respectively connected between the middle axle and the frame and between the rear axle and the frame.

The middle axle is provided with a middle axle thrust rod support, the rear axle is provided with a rear axle thrust rod support, a thrust rod assembly support is arranged between the frame and the transverse pull rod assembly, and the other side of the transverse pull rod assembly is detachably connected with the middle axle thrust rod support and the rear axle thrust rod support.

And limiting block assemblies are arranged between the middle axle and the frame and between the rear axle and the frame, are positioned right above the middle axle and the rear axle and are symmetrically connected to the frame in a left-right manner.

The single swing arm is made of spring steel plates with different thicknesses in a stacked mode, the front side of the single swing arm is curled to form a lug, one plate is longer, the rear end of the longer plate is a plane and is provided with a positioning hole, the other shorter plate only exceeds half of the longer plate, the shorter plate is wrapped by the longer plate, and the two plates are fixedly connected through a bolt penetrating through the positioning hole in the center of the longer plate.

The big support is formed by splicing and welding five steel plates with different thicknesses and is detachably connected to the frame, small holes distributed on the upper side of the big support are fixed with reserved hole positions on the frame through bolts and nuts, and a large hole on the lower side of the big support is connected with the single swing arm through bolts and nuts.

Two large supports are arranged between the middle axle and the rear axle, and the single swing arm connected with the middle axle and the single swing arm connected with the rear axle are symmetrically assembled on two sides of the large supports.

Has the advantages that: the utility model adopts the big support formed by tailor welding, thereby realizing light weight and reducing cost; the utility model can reduce the parts of the air suspension, improve the space utilization rate and the integration level of the parts, realize the light weight and improve the fuel economy; the utility model discloses optimize the setting of arranging the transverse pull rod assembly of angle, make the axle when beating from top to bottom, the automobile body gesture is more stable, has reduced the problem of tire eccentric wear.

Drawings

FIG. 1 is a schematic view of the assembly of the present invention on a vehicle frame;

FIG. 2 is an enlarged view of a portion A of FIG. 1 according to the present invention;

FIG. 3 is a schematic top view of the present invention assembled to a vehicle frame;

FIG. 4 is a schematic view of an air suspension assembly of conventional construction;

FIG. 5 is a schematic structural view of the single swing arm of the present invention;

fig. 6 is a schematic structural view of the large bracket of the present invention.

In the figure: 1. connecting the beam assembly; 2. a damper assembly; 3. a rear axle; 4. a limiting block assembly; 5. a middle bridge; 6. a single swing arm; 7. a frame; 8. an air spring assembly; 9. a large support; 10. a transverse pull rod assembly; 11. a thrust rod assembly support; 12. a middle axle thrust rod bracket; 13. a rear axle thrust rod support; 14. a longitudinal thrust rod; 401. a lower leaf spring support; 402. a riding bolt; 403. and a pressure plate is arranged on the bridge.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

As shown in fig. 1-6, the utility model provides a single swing arm air suspension, which comprises a frame 7, a large support 9 and single swing arms 6, wherein the large support 9 is arranged on the frame 7 in a bilateral symmetry manner, two of the large support 9 are respectively arranged on the frame 7, the front ends of the four single swing arms 6 are connected with the large support 9 through detachable pin shafts, and the tail ends of the four single swing arms are connected with a connecting beam assembly 1; a middle bridge 5 is arranged on the front two single swing arms 6, a rear bridge 3 is arranged on the rear two single swing arms 6, and the middle bridge 5 and the rear bridge 3 are detachably connected to the front and rear single swing arms 6 through a lower plate spring support 401, an upper bridge pressure plate 403 and a riding bolt 402 respectively; the rear sides of the middle axle 5 and the rear axle 3 are bilaterally symmetrically provided with a shock absorber assembly 2 and an air spring assembly 8 respectively, the shock absorber assemblies 2 are arranged on the lower plate spring support 401, and the air spring assemblies 8 are arranged between the connecting beam assembly 1 and the frame 7; and transverse pull rod assemblies 10 are respectively connected between the middle axle 5 and the frame 7 and between the rear axle 3 and the frame 7.

Middle axle 5 has arranged middle axle distance rod support 12, has arranged rear axle distance rod support 13 on the rear axle 3, has arranged distance rod assembly support 11 between frame 7 and transverse pull rod assembly 10, detachably connected together between the opposite side of transverse pull rod assembly 10 and middle axle distance rod support 12 and rear axle distance rod support 13.

And limiting block assemblies 4 are arranged between the middle axle 5 and the rear axle 3 and the frame 7, the limiting block assemblies 4 are positioned right above the middle axle 5 and the rear axle 3, and are symmetrically connected to the frame 7.

The single swing arm 6 is made by stacking spring steel plates with different thicknesses, the front side of the single swing arm is curled to form a lug, one plate is longer, the rear end of the longer plate is a plane and is provided with a positioning hole, the other shorter plate is only more than half of the longer plate in order to be connected with the connecting beam assembly 1, the shorter plate is wrapped by the longer plate, and the longer plate and the shorter plate are fixedly connected through a bolt penetrating through the positioning hole in the center of the longer plate.

The big support 9 is formed by splicing and welding five steel plates with different thicknesses and is detachably connected to the frame 7, small holes distributed on the upper side of the big support 9 are fixed with reserved hole positions on the frame 7 through bolts and nuts, and a large hole on the lower side of the big support is connected with the single swing arm 6 through bolts and nuts.

Two large supports 9 are arranged between the middle axle 5 and the rear axle 3, and a single swing arm 6 connected with the middle axle 5 and the single swing arm 6 connected with the rear axle 3 are symmetrically assembled on two sides of the large supports 9.

The utility model discloses arranged on the frame about each respectively two and the big support and the single swing arm of symmetry, be equipped with the well axle on two single swing arms in the place ahead, the rear side of well axle is equipped with bilateral symmetry's bumper shock absorber assembly and bilateral symmetry's air spring assembly, and the rear side of rear axle also is equipped with bilateral symmetry's bumper shock absorber assembly and bilateral symmetry's air spring assembly to be connected through horizontal pull rod assembly between well axle and rear axle and the frame.

Because the single swing arm which is made of spring steel and adopts a structure of stacking sheet plates with different thicknesses is used, good longitudinal support can be provided, and the traditional upper thrust rod structure is cancelled, so that the weight of the suspension is reduced. Compared with the balance I-beam of the air suspension with the traditional structure, the shape of the single swing arm reduces stress concentration; because the material of single swing arm is spring steel and its shape for two front sides curl and form the grasswort, the whole section is the slice panel that varies thickly, in addition with the cooperation of the big rigidity air spring that common air spring compared, the utility model discloses can provide the rigidity of heeling effectively, guarantee the vehicle when crossing the turn and go on jolting the road surface stability and antidumping nature for traditional transverse stabilizer bar arranges and obtains the cancellation, and spare part integration further improves. The transverse pull rod assembly with the optimized arrangement angle enables the posture of a vehicle body to be more stable when the wheels jump, reduces the occurrence of tire eating, and meanwhile, the transverse pull rod assembly provides enough transverse support for the vehicle, so that the arrangement of a thrust rod on a traditional air suspension is indirectly cancelled. In addition, compared with the traditional air suspension, two air spring assemblies are reduced on a single axle, and the total mass of the suspension is reduced again. The utility model discloses having optimized the structure, having made the performance more excellent, having alleviateed the dead weight, made vehicle fuel economy obtain improving, have higher integrated level, the cost is reduced moreover, and the performance further improves.

As the utility model discloses further improvement, to above-mentioned double bridge single swing arm air suspension, the big support figure of suspension totality is two, can set up two big supports between well bridge and the rear axle promptly, connects the single swing arm of well bridge and connects the single swing arm symmetry assembly of rear axle in big support both sides.

As the utility model discloses further improvement, when the vehicle only was equipped with a rear axle, its structure was promptly for foretell double-axle single swing arm air suspension's well axle or rear axle single swing arm air suspension.

The utility model discloses not only greatly reduced on manufacturing cost, the weight of suspension has alleviateed moreover, has improved fuel economy, compares in the balanced I-beam of traditional structure, and the shape of single swing arm has reduced stress concentration, and simultaneously, the automobile body gesture when optimizing the transverse pull rod assembly of arranging the angle makes the wheel jump is more stable, has higher performance.

The above embodiments of the present invention are only examples, not only, and all changes within the scope of the present invention or the same range of the present invention are all encompassed by the present invention.

Claims

1. The utility model provides a single swing arm air suspension which characterized in that: the bicycle comprises a bicycle frame (7), large supports (9) and single swing arms (6), wherein the large supports (9) are arranged on the bicycle frame (7) in a bilateral symmetry mode, the front ends of the four single swing arms (6) are connected with the large supports (9) through detachable pin shafts, and the tail ends of the four single swing arms are connected with a connecting beam assembly (1); a middle bridge (5) is arranged on the front two single swing arms (6), a rear bridge (3) is arranged on the rear two single swing arms (6), and the middle bridge (5) and the rear bridge (3) are detachably connected to the front single swing arms (6) and the rear single swing arms (6) through a lower plate spring support (401), an upper bridge pressure plate (403) and a riding bolt (402); the rear sides of the middle axle (5) and the rear axle (3) are bilaterally symmetrically provided with a shock absorber assembly (2) and an air spring assembly (8) respectively, the shock absorber assembly (2) is arranged on the lower plate spring support (401), and the air spring assembly (8) is arranged between the connecting beam assembly (1) and the frame (7); and transverse pull rod assemblies (10) are respectively connected between the middle axle (5) and the frame (7) and between the rear axle (3).

2. The single swing arm air suspension of claim 1, wherein: well bridge distance rod support (12) have been arranged in well bridge (5), have arranged rear axle distance rod support (13) on rear axle (3), have arranged distance rod assembly support (11) between frame (7) and transverse pull rod assembly (10), detachably links together between the opposite side of transverse pull rod assembly (10) and well bridge distance rod support (12) and rear axle distance rod support (13).

3. The single swing arm air suspension of claim 1, wherein: be equipped with stopper assembly (4) between well axle (5) and rear axle (3) and frame (7), stopper assembly (4) are located well axle (5) and rear axle (3) directly over, and bilateral symmetry connects on frame (7).

4. The single swing arm air suspension of claim 1, wherein: the single swing arm (6) is made of spring steel plates with different thicknesses in a stacked mode, the front side of the single swing arm is curled to form a lug, one plate is longer, the rear end of the longer plate is a plane and is provided with a positioning hole, the other shorter plate only exceeds a half of the longer plate, the shorter plate is wrapped by the longer plate, and the longer plate and the shorter plate are fixedly connected through a bolt penetrating through the positioning hole in the center of the longer plate.

5. The single swing arm air suspension according to claim 1, wherein: the large support (9) is formed by splicing and welding five steel plates with different thicknesses and is detachably connected to the frame (7), small holes distributed on the upper side of the large support (9) are fixed with reserved holes in the frame (7) through bolts and nuts, and a large hole on the lower side of the large support (9) is connected with the single swing arm (6) through bolts and nuts.

6. Single swing arm air suspension according to any of claims 1-5, wherein: two large supports (9) are arranged between the middle axle (5) and the rear axle (3), and a single swing arm (6) connected with the middle axle (5) and the single swing arm (6) connected with the rear axle (3) are symmetrically assembled on two sides of the large supports (9).