CN217260289U

CN217260289U - Rear suspension structure of unmanned drive-by-wire chassis

Info

Publication number: CN217260289U
Application number: CN202221148845.1U
Authority: CN
Inventors: 罗永昌; 夏存良; 赵懿; 吴继翔; 张桂源
Original assignee: Shanghai Jiyu Technology Co ltd
Current assignee: Shanghai Jiyu Technology Co ltd
Priority date: 2022-05-13
Filing date: 2022-05-13
Publication date: 2022-08-23
Anticipated expiration: 2032-05-13

Abstract

The utility model relates to a rear suspension structure of a driverless control chassis, which comprises a frame, a shock absorber assembly, a drive axle, a stabilizer bar, a connecting rod bracket, an upper connecting rod and a lower connecting rod; the frame consists of a first vertical bracket, a second vertical bracket, a third vertical bracket, a transverse bracket, a first accessory, a first lining and a second lining which are connected by welding; the shock absorber assembly consists of a pair of shock absorbers and springs which are symmetrically distributed left and right and is assembled between the frame and the connecting rod bracket; the stabilizer bar is arranged between the frame and the drive axle; the connecting rod support is fixed on the drive axle in a bilateral symmetry mode, and the connecting rod support, the shock absorber assembly, the upper connecting rod and the lower connecting rod form a four-bar mechanism. The utility model discloses a functions such as suspension support, wheel damping of beating from top to bottom, integrated form installation drive module and lateral stability adjust have simplified driving motor's installation, and reduce cost has restrained the braking point and has been contused after with higher speed, has kept the stability of automobile body gesture.

Description

Rear suspension structure of unmanned drive-by-wire chassis

Technical Field

The utility model belongs to the technical field of intelligent driving, concretely relates to rear suspension structure on unmanned drive-by-wire chassis.

Background

The rear suspension of the wire-controlled chassis of the automobile generally comprises a connecting rod, a swing arm, a spring, a shock absorber, a bushing, a transverse stabilizer bar and other parts. The rear suspension of the wire control chassis of the automobile generally has the forms of a torsion beam structure, a multi-connecting-rod structure, a longitudinal steel plate spring and the like, and a suspension system and a driving system are two sets of mechanisms which are respectively designed, so that the integrated design of the suspension system and the driving system is difficult to realize; the existing automobile drive-by-wire chassis suspension system is not suitable for the unmanned drive-by-wire chassis due to the fact that design, installation, spatial arrangement and suspension parameter adjustment are complex and the cost is high. To improve these problems, the utility model provides a rear suspension structure of unmanned drive-by-wire chassis.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rear suspension structure on unmanned drive-by-wire chassis, the design installation is simple, is convenient for adjust suspension attitude parameter, can both keep when the wheel is beated from top to bottom with better land fertility of grabbing, simplifies the structural design of suspension system, reduce cost. The utility model discloses another aim at can include drive shaft, driving motor integration to the rear suspension to actuating system, improve the waterproof dustproof ability of drive-by-wire system part, and spatial arrangement is very compact, makes things convenient for mass production to assemble.

In order to achieve the above object, the utility model provides a following technical scheme: a rear suspension structure of a drone drive-by-wire chassis, comprising: the suspension device comprises a frame 1, a shock absorber assembly 2, a drive axle 3, a stabilizer bar 4, a connecting rod bracket 5, an upper connecting rod 601 and a lower connecting rod 602; frame 1 is formed by welding first vertical support 801, second vertical support 802, third vertical support 803, lateral support 9, first attachment 701, first bushing 1101 and second bushing 1102; the shock absorber assembly 2 consists of a pair of shock absorbers and springs which are symmetrically distributed in the left-right direction, and the shock absorber assembly 2 is assembled between the frame 1 and the connecting rod bracket 5 to provide the shock absorption and support functions; the stabilizer bar 4 is arranged between the frame 1 and the drive axle 3, and can provide a corresponding lateral supporting effect when the vehicle encounters lateral impact, so that the lateral stability of the vehicle is improved; the connecting rod supports 5 are fixed on the drive axle 3 in a bilateral symmetry mode, the connecting rod supports 5, the third vertical support 803, the upper connecting rod 601 and the lower connecting rod 602 form a four-bar mechanism, the length of the upper connecting rod 601 and the length of the lower connecting rod 602 can be greatly shortened while the wheel jumping restraining function is achieved, and the strength of the frame 1 is improved.

Further, an I-shaped stabilizing bracket is welded on the frame 1, and the I-shaped stabilizing bracket is formed by welding a first vertical bracket 801, a second vertical bracket 802 and a transverse bracket 9. The structure strengthens the torsional rigidity and the tensile strength of the frame 1, and can obviously improve the lateral stability of a vehicle body when the drive-by-wire chassis encounters transverse impact.

Further, the driving axle 3 comprises a hub bearing 14 and a brake bracket 16, and the driving axle comprises a driving half shaft 15, a driving motor 17, a transmission mechanism 18 and a differential mechanism 19; a second accessory 702 is welded on the drive axle 3, and the brake brackets 16 are arranged at two ends of the drive axle 3; the hub bearing 14 is connected with a driving half shaft 15; the transmission mechanism 18 transmits the torque of the drive motor 17 to the differential mechanism 19 and further to the left and right drive half shafts 15, thereby driving the vehicle to travel.

Further, the upper link 601 and the lower link 602 have a U-shape at one end and a ring shape at the other end. The connecting rod has simple structure, convenient assembly and effective cost reduction.

Further, the link bracket 5 is provided with a first mounting hole 1201, a second mounting hole 1202, a third mounting hole 1203, a pair of first lightening holes 1301 and a pair of second lightening holes 1302. The part integrated level is high, and when the wheel passes through uneven road surface, the vibration of wheel can not directly transmit the automobile body, and is less to automobile body and interior goods impact.

Further, a nut 10 is arranged on the stabilizer bar 4, one end of the stabilizer bar 4 is connected with the first vertical support 801, the other end of the stabilizer bar 4 is connected with the second accessory 702, the relative posture of the chassis and the vehicle body can be adjusted, the bilateral symmetry installation of the wheels is ensured, and the vehicle running stability can be ensured.

Further, the upper end of the shock absorber assembly 2 is connected to the first attachment 701, and the lower end is connected to the third mounting hole 1203.

Further, first and

second bushings

1101, 1102 are welded to third vertical support 803; one side of the upper connecting rod 601 is connected with a first bushing 1101, and the other side of the upper connecting rod is connected with a first mounting hole 1201; the lower link 602 is coupled to the second bushing 1102 at one side and to the second mounting hole 1202 at the other side. The rigidity of the vehicle frame 1 is improved, and the durable service life of the first bushing 1101 and the second bushing 1102 is also enhanced.

Compared with the prior art, the utility model has the advantages of it is following:

(1) the I-shaped stable structure is welded on the frame 1, the torsional rigidity and the tensile strength of the frame 1 are enhanced, and the lateral stability of the vehicle body can be obviously improved when the wire control chassis encounters transverse impact.

(2) The bush at one end of the connecting rod is welded on the frame in advance, so that the rigidity of the frame is improved, and the durable service life of the bush is prolonged. Because the bush is integrated on the frame in advance, the end of the upper connecting rod 601 and the end of the lower connecting rod 602 can be designed into a U shape, the connecting rod has a simple structure, the assembly is convenient, and the cost is effectively reduced.

(3) The shock absorber assembly 2 and the connecting rod are arranged in the longitudinal direction of the vehicle nod or the back bump, the phenomenon of brake nod or back bump acceleration can be effectively inhibited and relieved, and the variation of the posture of the vehicle body is obviously reduced compared with the prior art.

(4) The stabilizer bar 4 and the connecting rod bracket 5 are both welded on the drive axle 3, compared with the prior art, the part integration level is high, and when the wheel passes through uneven road surfaces, the vibration of the wheel cannot be directly transmitted to the vehicle body, and the impact on the vehicle body and goods or passengers in the vehicle is small; the upper end of the stabilizer bar 4 is connected to the I-shaped stabilizing bracket instead of being directly connected to the vehicle body, the other end of the stabilizer bar is connected to the driving axle 3 bracket, and when the vehicle encounters lateral impact, the lateral impact transmitted to the vehicle body is obviously reduced compared with the prior art; the adjusting nut 10 of the stabilizer bar 5 can adjust the relative posture of the chassis and the vehicle body, ensure the bilateral symmetry installation of the wheels and ensure the running stability of the vehicle.

(5) Upper link 601, lower link 602, link support 5, and third vertical support 803 form a four-bar suspension. Different from the four-bar suspension which is usually arranged in the transverse direction of the vehicle in the prior art, the four-bar suspension structure of the utility model is arranged in the longitudinal direction of the vehicle, so that the camber angle of the wheel can not change when the wheel jumps up and down, the tire can have good ground holding force under various working conditions, and a toe angle adjusting device of the wheel is not required to be arranged to compensate the change of the camber angle; another advantage is that when the wheel jumps up and down, the wheel center position is almost unchanged in the longitudinal direction, the wheel base of the vehicle is almost unchanged, and therefore the stability and smoothness of the vehicle motion can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, proportion, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, proportion relation change or size adjustment still falls within the scope covered by the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention.

Figure 1 is the overall diagram of the present invention.

Fig. 2 is a front view of a rear suspension structure of a drone drive-by-wire chassis of the present invention.

Fig. 3 is a drive axle structure diagram of a rear suspension structure of the unmanned drive-by-wire chassis according to the present invention.

Fig. 4 is a driving differential mechanism diagram of a rear suspension structure of the unmanned drive-by-wire chassis according to the present invention.

Reference numerals: 1-a vehicle frame; 2-a damping assembly; 3-a drive axle; 4-a stabilizer bar; 5-a connecting rod support; 601-an upper link; 602-a lower link; 701-a first accessory; 702-a second accessory; 801-a first vertical support; 802-a second vertical support; 803-a second vertical support; 9-a transverse bracket; 10-a nut; 1101-a first bushing; 1102-a second bushing; 1201-a first mounting hole; 1202-a second mounting hole; 1203-a third mounting hole; 1301-a first lightening hole; 1302-a second lightening hole; 14-a hub bearing; 15-driving the half shaft; 16-a brake carrier; 17-a drive motor; 18-a transmission mechanism; 19-differential mechanism.

Detailed Description

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 some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of protection of the present invention.

In a first embodiment, referring to fig. 1, fig. 2 and fig. 3, the present invention provides the following technical solutions: a rear suspension structure of a drone drive-by-wire chassis, comprising: the suspension device comprises a frame 1, a shock absorber assembly 2, a drive axle 3, a stabilizer bar 4, a connecting rod bracket 5, an upper connecting rod 601 and a lower connecting rod 602; frame 1 is composed of first vertical support 801, second vertical support 802, third vertical support 803, transverse support 9, first accessory 701, first bushing 1101 and second bushing 1102 which are connected by welding; the shock absorber assembly 2 consists of a pair of shock absorbers and springs which are symmetrically distributed left and right, and the shock absorber assembly 2 is assembled between the frame 1 and the connecting rod bracket 5 to provide shock absorption and support functions; the stabilizer bar 4 is arranged between the frame 1 and the drive axle 3, and can provide a corresponding lateral supporting effect when the vehicle encounters lateral impact, so that the lateral stability of the vehicle is improved; the connecting rod supports 5 are fixed on the drive axle 3 in a bilateral symmetry mode, the connecting rod supports 5, the third vertical support 803, the upper connecting rod 601 and the lower connecting rod 602 form a four-bar mechanism, the length of the upper connecting rod 601 and the length of the lower connecting rod 602 can be greatly shortened while the wheel jumping restraining function is achieved, and the strength of the frame 1 is improved.

Preferably, an I-shaped stabilizing bracket is welded on the frame 1, and is formed by welding a first vertical bracket 801, a second vertical bracket 802 and a transverse bracket 9. The structure strengthens the torsional rigidity and the tensile strength of the frame 1, and can obviously improve the lateral stability of a vehicle body when the drive-by-wire chassis encounters transverse impact.

Preferably, the upper link 601 and the lower link 602 have a U-shape at one end and a ring shape at the other end. The connecting rod has simple structure, convenient assembly and effective cost reduction.

Preferably, the link bracket 5 is provided with a first mounting hole 1201, a second mounting hole 1202, a third mounting hole 1203, a pair of first lightening holes 1301 and a pair of second lightening holes 1302. The part integrated level is high, and when the wheel passes through uneven road surface, the vibration of wheel can not directly transmit the automobile body, and is less to automobile body and the interior goods impact of car.

Preferably, a nut 10 is arranged on the stabilizer 4, one end of the stabilizer 4 is connected with the first vertical support 801, and the other end of the stabilizer 4 is connected with the second accessory 702, so that the relative posture of the chassis and the vehicle body can be adjusted, the bilateral symmetry installation of the wheels is ensured, and the running stability of the vehicle can be ensured.

Preferably, the shock absorber assembly 2 is connected to the first attachment member 701 at the upper end and connected to the third mounting hole 1203 at the lower end.

Preferably, first and

second bushings

The drive axle does not bear a drive function, does not need parts such as an integrated drive motor unit and a drive half shaft, is suitable for a non-drive shaft, and can be provided with more other parts.

In the second embodiment, referring to fig. 4, the drive axle 3 is used as a drive shaft, and is integrated with a set of drive differential mechanism, further, the drive axle 3 further comprises a hub bearing 14 and a brake bracket 16, and the drive axle 3 comprises a drive half shaft 15, a drive motor 17, a transmission mechanism 18 and a differential mechanism 19; a second accessory 702 is welded on the drive axle 3, and the brake brackets 16 are arranged at two ends of the drive axle 3; the hub bearing 14 is connected with a driving half shaft 15; the transmission mechanism 18 transmits the torque of the drive motor 17 to the differential mechanism 19 and further to the left and right drive half shafts 15, thereby driving the vehicle to travel.

The drive axle has the drive function, integrates parts such as a drive motor, a differential mechanism, a drive motor transmission mechanism, a drive half shaft and the like, and is suitable for a drive shaft. The drive axle has the advantages of very compact design, low vibration noise, convenient installation and obvious cost advantage. The rest is the same as the first embodiment.

Although the embodiments of the present invention have been described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A rear suspension structure of a drone drive-by-wire chassis, comprising: the shock absorber comprises a frame (1), a shock absorber assembly (2), a drive axle (3), a stabilizer bar (4), a connecting rod bracket (5), an upper connecting rod (601) and a lower connecting rod (602); the frame (1) is composed of a first vertical bracket (801), a second vertical bracket (802), a third vertical bracket (803), a transverse bracket (9), a first accessory (701), a first lining (1101) and a second lining (1102) which are connected in a welding mode; the shock absorber assembly (2) consists of a pair of shock absorbers and springs which are symmetrically distributed left and right, and the shock absorber assembly (2) is assembled between the frame (1) and the connecting rod bracket (5); the stabilizer bar (4) is arranged between the frame (1) and the drive axle (3); the connecting rod support (5) is fixed on the drive axle (3) in a bilateral symmetry mode, and the connecting rod support (5), the third vertical support (803), the upper connecting rod (601) and the lower connecting rod (602) form a four-bar linkage.

2. The rear suspension structure of a drone drive-by-wire chassis of claim 1, characterized in that: the I-shaped stabilizing support is welded on the frame (1) and is formed by welding a first vertical support (801), a second vertical support (802) and a transverse support (9).

3. The rear suspension structure of a drone drive-by-wire chassis of claim 1, characterized in that: the driving axle (3) comprises a driving half shaft (15), a driving motor (17), a transmission mechanism (18) and a differential mechanism (19); a second accessory (702) is welded on the drive axle (3), and the brake support (16) is arranged at two ends of the drive axle (3); the hub bearing (14) is connected with a drive half shaft (15).

4. The rear suspension structure of a drone drive-by-wire chassis of claim 1, characterized in that: one end of the upper connecting rod (601) and one end of the lower connecting rod (602) are U-shaped, and the other ends of the upper connecting rod and the lower connecting rod are annular.

5. The rear suspension structure of a drone drive-by-wire chassis of claim 1, characterized in that: the connecting rod support (5) is provided with a first mounting hole (1201), a second mounting hole (1202), a third mounting hole (1203), a pair of first lightening holes (1301) and a pair of second lightening holes (1302).

6. A rear suspension structure of a drone drive-by-wire chassis according to claim 3, characterized in that: and a nut (10) is arranged on the stabilizer bar (4), one end of the stabilizer bar (4) is connected with the first vertical support (801), and the other end of the stabilizer bar is connected with the second accessory (702).

7. The rear suspension structure of a drone drive-by-wire chassis of claim 5, characterized in that: the upper end of the shock absorber assembly (2) is connected with the first accessory (701), and the lower end of the shock absorber assembly is connected with the third mounting hole (1203).

8. The rear suspension structure of a drone drive-by-wire chassis of claim 5, characterized in that: the first bushing (1101) and the second bushing (1102) are welded on a third vertical support (803); one side of the upper connecting rod (601) is connected with the first bushing (1101), and the other side of the upper connecting rod is connected with the first mounting hole (1201); one side of the lower connecting rod (602) is connected with the second bushing (1102), and the other side of the lower connecting rod is connected with the second mounting hole (1202).