CN209813661U - Integrated air suspension system of wheel-side electric drive axle - Google Patents

Abstract

The utility model provides a wheel limit electric drive axle integrated air suspension system, shock absorber and gasbag assembly use the center of wheel limit electric drive axle to be left and right sides and front and back symmetrical arrangement about as the center, shock absorber and gasbag assembly all install and fix on wheel limit electric drive axle, the left and right centre spacing of gasbag assembly is 1510 ~ 1580mm, lower thrust rod adopts the V type to arrange in the place ahead of wheel limit electric drive axle, one end is connected with wheel limit electric drive axle, the other end is fixed on whole car frame, the contained angle of two lower thrust rods is 60 degrees, upper thrust rod adopts parallel arrangement in the place ahead of wheel limit electric drive axle, wheel limit electric drive axle is equipped with height sensor assembly and stabilizer bar.

Description

Integrated air suspension system of wheel-side electric drive axle

Technical Field

The utility model relates to an automobile chassis technical field specifically is an integrated air suspension system of wheel limit electric drive axle.

Background

The implementation comments on further strengthening and improving the travel service of the old and the disabled define the action outline of promoting the transportation barrier-free travel service, encourage the conditional urban newly-added buses to preferentially select low-floor buses, and realize the low-floor realization of the urban newly-added buses with over 500 ten thousand population by 2020. With the continuous promotion of the national new energy strategy, the pure electrification and low floor of the urban public transport vehicles become the future development trend.

CN104908581A、CN102139628AAndCN107284214Athe wheel-side electric drive axle scheme is provided respectively from the aspects of increasing the speed ratio, facilitating the disassembly and maintenance of the motor, reducing the processing and manufacturing difficulty, reducing the cost and the like. However, in the above schemes, how the wheel-side electric drive axle is matched with the suspension is not considered, so as to meet different arrangement and performance requirements of the whole vehicle, and especially ensure the roll stability of the whole vehicle. Therefore, the entire vehicle plant is often required to additionally consider suspension matching and stabilizer bar arrangement, resulting in a great increase in development cycle and development cost.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a wheel-side electric drive axle integrated air suspension system so as to effectively improve the integration level of an electric drive axle and a suspension.

In order to achieve the purpose, the shock absorber and the airbag assembly are symmetrically arranged left and right and front and back by taking the center of the wheel-side electric drive axle as the center, the shock absorber and the airbag assembly are both installed and fixed on the wheel-side electric drive axle, the left and right center distance of the airbag assembly is 1510 ~ 1580mm, the lower thrust rod is arranged in front of the wheel-side electric drive axle in a V shape, one end of the lower thrust rod is connected with the wheel-side electric drive axle, the other end of the lower thrust rod is fixed on a whole vehicle frame, the included angle of the two lower thrust rods is 60 degrees, the upper thrust rods are arranged in front of the wheel-side electric drive axle in parallel, and the wheel-side electric drive axle.

The air bag assembly is arranged on the wheel-side electric drive axle through a cushion block, the cushion block is of a tailor-welded structure formed by welding a square block and a disc together, the cushion block is fixedly welded on the wheel-side electric drive axle, and the air bag assembly is connected onto the cushion block through threads.

The height sensor assembly is arranged behind the wheel-side electric drive axle in a bilateral symmetry mode, the height sensor assembly is fixed to the wheel-side electric drive axle through a second support, the swing rod component is perpendicular to the second support, the lower end of the swing rod component is fixed to the second support, one end of the height sensor is connected with the upper end of the swing rod component, and the other end of the height sensor is fixed to a whole vehicle frame or a vehicle body.

A transverse stabilizer bar is arranged at the rear of the wheel-side electric drive axle, a first support seat which is cast and processed is symmetrically fixed on the wheel-side electric drive axle through the left side and the right side of four flange bolts, two lug parts of the transverse stabilizer bar are fixed with the first support seat, and a double-nut structure is adopted to screw and prevent looseness.

The transverse stabilizer bar can also be arranged in front and arranged in front of the wheel-side electric drive axle, the third support is a butt welding structure formed by welding a base and a pin shaft together, the left side and the right side of the third support are symmetrically fixed on the wheel-side electric drive axle through four flange bolts, the lower end of the suspender component is connected to the pin shaft of the third support, and the upper end of the suspender component is connected with the transverse stabilizer bar together and is screwed tightly and anti-loosing by adopting a double-nut structure.

The utility model adopts the integrated design of the electric drive axle and the suspension assembly, which is beneficial to shortening the matching period of the whole vehicle development; the electric drive axle and the suspension assembly are integrated for supply, so that the number of parts of the whole vehicle is reduced, and the cost is saved; the air suspension is adopted and provided with the height sensor assembly, so that the height of the chassis of the whole vehicle can be adjusted, and the smoothness of the whole vehicle is improved; the transverse stabilizer bar design is added, so that the roll stability of the whole vehicle is ensured; meanwhile, the transverse stabilizer bar can be arranged in a front or rear mode by considering different arrangement requirements of the whole vehicle.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially enlarged view a of fig. 1.

Fig. 3 is a partial front view of fig. 1.

Fig. 4 is a schematic structural diagram of the spacer block in fig. 3.

Fig. 5 is a schematic structural view of the stabilizer bar of the present invention in the front position.

Fig. 6 is a schematic structural view of the third support in fig. 5.

Fig. 7 is a partial enlarged view B of fig. 5.

In the figure: 1. a wheel-side electric drive axle; 2. a shock absorber; 3. an air bag assembly; 4. a lower thrust rod; 5, an upper thrust rod; 6. a hexagon head bolt I; 7. a first support; 8. a stabilizer bar; 9. a composite bushing; 10. a height sensor assembly; a height sensor; 12. a swing rod component; 13. a second support; 14. a short bolt; 15. cushion blocks; 16. a square block; 17. a disc; 18. a third support; 19. a base; 20. a pin shaft; 21. a flange bolt; 22. a thick hexagonal nut; 23. a thin hexagonal nut; 24. a second hexagon head bolt; 25. a boom assembly.

Detailed Description

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, and fig. 7, the present invention mainly includes a wheel-side electric drive axle 1, a damper 2, an air bag assembly 3, a lower thrust rod 4, an upper thrust rod 5, a stabilizer bar 8, and a height sensor assembly 10. The wheel-side electric drive axle 1 is provided with four shock absorbers 2, one end of each shock absorber 2 is fixed on the wheel-side electric drive axle 1, the other end of each shock absorber 2 is fixed on a whole vehicle frame, and the shock absorbers 2 are symmetrically arranged left and right and front and back by taking the center of the wheel-side electric drive axle 1 as the center, so that uniform bearing is facilitated; the lower thrust rods 4 are arranged in a V shape, the included angle between the two lower thrust rods is 60 degrees, lateral force transmission is facilitated, one end of each lower thrust rod 4 is fixed on the wheel-edge electric drive axle 1 through two hexagonal head bolts I6, and the other end of each lower thrust rod is fixed on a whole vehicle frame; the upper thrust rods 5 are arranged in parallel and only bear and transmit longitudinal force, and the two upper thrust rods 5 and the wheel-side electric drive axle 1 are fastened through hexagonal bolts.

The transverse stabilizer bar 8 is arranged at the rear of the wheel-side electric drive axle 1 relative to the whole vehicle. The first support 7 is machined through a casting and fixed on the wheel-side electric drive axle 1 through four flange bolts 21, the left side and the right side are symmetrically arranged, the two ear parts of the transverse stabilizer bar 8 are provided with the composite bushing 9, the rod part of the second hexagonal head bolt 24 penetrates through the first support 7, the ear parts of the transverse stabilizer bar 8 and the composite bushing 9, the thick hexagon nut 22 and the thin hexagon nut 23 are sequentially screwed on the rod part, and the double-nut structure is adopted for preventing looseness.

The utility model discloses an integrated air suspension system of wheel limit electric drive axle has height adjusting device, can fill the gassing through the gasbag, in order to realize whole car chassis height-adjustable, the centre-to-centre spacing about gasbag assembly 3 is 1510 ~ 1580mm, be close to the wheel base, can improve the inclination rigidity of system, be favorable to improving whole car stability of heeling, four gasbag assembly 3's one end is installed on wheel limit electric drive axle 1, the other end is fixed on whole car frame, in order to avoid gasbag assembly 3 and wheel limit electric drive axle 1 snap-on, there is the interference risk, cushion 15 has been increased in the centre, cushion 15 is become an organic whole by square 16 and disc 17 through welding group, be favorable to reduce cost, cushion 15's middle processing has M18x1.5's screw through-hole, gasbag assembly 3 passes through threaded connection on cushion 15, in order to make things convenient for the maintenance of gasbag assembly 3 to change, cushion 15 and wheel limit electric drive axle 1 are in the same place through welded fastening, be favorable to guaranteeing that the installation is reliable two 13 utilize two short bolt 14 to fix on wheel limit electric drive axle 1, for bilateral symmetry structure to arrange, install fixed altitude sensor assembly 10 on support two 13, automobile body height sensor assembly 10 and pendulum rod 12 contain two vertical sensor assembly 12, pendulum rod 12 and pendulum rod 12 are connected on the other end of electric drive axle 12, pendulum rod 12 is connected on the other end of the vertical sensor assembly of the support 12.

The utility model provides a stabilizer bar 8 also can adopt leading, for whole car, arranges in the place ahead of wheel limit electric drive axle 1. Three 18 adoption tailor-welded structures of support, including base 19 and round pin axle 20, three 18 of support after the welding is accomplished are fixed on wheel limit electric drive axle 1 through four flange bolts 21, adopt both sides symmetrical arrangement about the adoption, the lower extreme of jib subassembly 25 is connected on three 18 round pin axle 20 of support, adopt two 24 of hexagon head bolt to prevent loosing, the upper end of jib subassembly 25 links together with stabilizer bar 8 to adopt two 24 of hexagon head bolt, thick hexagon nut 22 and thin hexagon nut 23 to fasten locking.

Claims (5)

1. An integrated air suspension system of a wheel-side electric drive axle is characterized in that a shock absorber (2) and an air bag assembly (3) are symmetrically arranged left and right and front and back around the center of the wheel-side electric drive axle (1), the shock absorber (2) and the air bag assembly (3) are installed and fixed on the wheel-side electric drive axle (1), the left and right center distance of the air bag assembly (3) is 1510 ~ 1580mm, a lower thrust rod (4) is arranged in front of the wheel-side electric drive axle (1) in a V shape, one end of the lower thrust rod is connected with the wheel-side electric drive axle (1), the other end of the lower thrust rod is fixed on a whole vehicle frame, the included angle of the two lower thrust rods (4) is 60 degrees, an upper thrust rod (5) is arranged in front of the wheel-side electric drive axle (1) in parallel, and a height sensor assembly (10) and a transverse sensor (8) are arranged.

2. A wheel-side electric drive axle integrated air suspension system as defined in claim 1, wherein: the air bag assembly (3) is installed on the wheel-side electric drive axle (1) through a cushion block (15), the cushion block (15) is of a splice welding structure formed by welding a square block (16) and a disc (17), the cushion block (15) is fixedly welded on the wheel-side electric drive axle (1), and the air bag assembly (3) is connected onto the cushion block (15) through threads.

3. A wheel-side electric drive axle integrated air suspension system as defined in claim 1, wherein: the height sensor assembly (10) is arranged at the rear of the wheel-side drive axle (1) in a bilateral symmetry mode, the height sensor assembly (10) is fixed on the wheel-side drive axle (1) through a second support (13), a swing rod component (12) is perpendicular to the second support (13), the lower end of the swing rod component (12) is fixed on the second support (13), one end of the height sensor (11) is connected with the upper end of the swing rod component (12), and the other end of the height sensor (11) is fixed on a whole vehicle frame or a vehicle body.

4. A wheel-side electric drive axle integrated air suspension system as defined in claim 1, wherein: transverse stabilizer bar (8) have been arranged at the rear of round of limit electric drive axle (1), and support (7) that adopt the casting processing are fixed on round of limit electric drive axle (1) through four flange bolt (21) left and right sides symmetry, and two ears and support (7) of transverse stabilizer bar (8) are fixed to it is locking to adopt two nut structures to screw up.

5. The integrated air suspension system for a wheel-side electric drive axle of claim 4, wherein: stabilizer bar (8) adopt leading, arrange in the place ahead of round of limit electric drive axle (1), three (18) of support are base (19) and round pin axle (20) welding splice welding structure together, three (18) of support are fixed on round of limit electric drive axle (1) through four flange bolt (21) left and right sides symmetry, the lower extreme of jib subassembly (25) is connected on round pin axle (20) of three (18) of support, the upper end and the stabilizer bar (8) of jib subassembly (25) link together, and adopt two nut structures to screw up locking.