阅读说明：本技术 一种自动驾驶测试车的驱动悬挂装置 (Driving suspension device of automatic driving test vehicle ) 是由 蔡昂奇 于 2019-10-19 设计创作，主要内容包括：本发明公开了一种自动驾驶测试车的驱动悬挂装置。它包括支座、电机、摆臂、避震器、驱动轮、主同步带轮、从同步带轮和同步带,支座上并排设有竖直设置的第一通槽和第二通槽,摆臂顶端位于第一通槽内且通过第一转轴与支座铰接,电机的轴伸水平穿过支座侧壁伸入第二通槽,主同步带轮套设在电机的轴伸上,电机的轴伸与第一转轴同轴,驱动轮通过第二转轴与摆臂底端铰接,从同步带轮套设在第二转轴上,主同步带轮与从同步带轮通过同步带连接,摆臂中部设有第一通孔,避震器底端伸入第一通孔且与第一通孔内壁下部固定连接,避震器顶端伸入第一通槽且通过第三转轴与支座铰接。本发明设计成一级同步带传动,传动效率高,且同步带轮不易松动和脱落。(The invention discloses a driving suspension device of an automatic driving test vehicle. It includes the support, including a motor, an end cap, a controller, and a cover plate, the swing arm, the shock absorber, the drive wheel, main synchronous pulley, from synchronous pulley and hold-in range, be equipped with the first logical groove and the second that vertical setting led to the groove on the support side by side, the swing arm top is located first logical inslot and is articulated through first pivot and support, the axle of motor stretches the level and passes the support lateral wall and stretch into the second and lead to the groove, main synchronous pulley cover is established on the axle of motor stretches up, the axle of motor stretches up coaxial with first pivot, the drive wheel is articulated through second pivot and swing arm bottom, establish in the second pivot from the synchronous pulley cover, main synchronous pulley passes through the hold-in range with following synchronous pulley and is connected, the swing arm middle part is equipped with first through-hole, the shock absorber bottom stretches into first through-hole and with first through-hole inner wall lower part fixed. The invention is designed into primary synchronous belt transmission, the transmission efficiency is high, and the synchronous belt wheel is not easy to loosen and fall off.)

1. A driving suspension device of an automatic driving test vehicle is characterized by comprising a support (1), a motor (2), a swing arm (3), a shock absorber (4), a driving wheel (5), a main synchronous pulley (6), a secondary synchronous pulley (7) and a synchronous belt (8), wherein the support (1) is provided with a first through groove (9) and a second through groove (10) which are vertically arranged side by side, the top end of the swing arm (3) is positioned in the first through groove (9) and is hinged with the support (1) through a first rotating shaft (11), the motor (2) is horizontally arranged outside the support (1), the second through groove (10) is positioned between the first through groove (9) and the motor (2), a shaft extension (12) of the motor (2) horizontally penetrates through the side wall of the support (1) and extends into the second through groove (10), the main synchronous pulley (6) is sleeved on the shaft extension (12) of the motor (2), the shaft of motor (2) is stretched (12) and is coaxial with first pivot (11), drive wheel (5) are articulated through second pivot (13) and swing arm (3) bottom, establish on second pivot (11) from synchronous pulley (7) cover, primary synchronous pulley (6) and follow synchronous pulley (7) and be located the coplanar, primary synchronous pulley (6) and follow synchronous pulley (7) are connected through hold-in range (8), swing arm (3) middle part is equipped with first through-hole (14), shock absorber (4) bottom stretch into first through-hole (14) and with first through-hole (14) inner wall lower part fixed connection, shock absorber (4) top stretch into first logical groove (9) and articulate with support (1) through third pivot (15).

2. The drive suspension of an autonomous driving test vehicle according to claim 1, characterized in that the swing arm (3) is connected to the first shaft (11) by means of a first rolling bearing (16).

3. The drive suspension device of an automatic driving test vehicle according to claim 1, wherein a third through groove (17) penetrating through the swing arm (3) from top to bottom is formed in the bottom end of the swing arm (3), the drive wheel (5) is located in the third through groove (17), the second rotating shaft (13) horizontally penetrates through two side walls of the third through groove (17), and the driven synchronous pulley (7) is located on the outer side of the swing arm (3).

4. The drive suspension of an autonomous driving test vehicle according to claim 3, characterized in that the lateral wall of the third through slot (17) is connected to the second shaft (13) by means of a second rolling bearing (16).

5. The drive suspension device of an automatic drive test vehicle according to claim 1, further comprising a tension pulley (18) and a tension pulley adjusting mechanism for adjusting the height of the tension pulley (18), wherein the tension pulley (18) is disposed on the timing belt and tensions the timing belt (8).

6. The drive suspension device of the automatic driving test vehicle according to claim 5, wherein the tension wheel adjusting mechanism is located between the swing arm (3) and the synchronous belt (8), the tension wheel adjusting mechanism comprises an adjusting arm (19), an adjusting pull rod (20), a mounting block (21) and an adjusting nut (22), the bottom end of the adjusting arm (19) is hinged with the swing arm (3), the top end of the adjusting arm (19) is hinged with the tension wheel (18), the mounting block (21) is arranged on the swing arm (3), a second through hole for the adjusting pull rod (20) to pass through is arranged in the mounting block (21), the adjusting nut (22) is arranged on the mounting block (21) and can rotate around the central axis of the second through hole, the threaded hole of the adjusting nut (22) is coaxial with the second through hole, the upper part of the adjusting pull rod (20) is provided with a threaded section, the thread section penetrates through the second through hole and is in threaded connection with an adjusting nut (22), and the bottom end of the adjusting pull rod (20) is hinged to the middle of the adjusting arm (19).

7. The drive suspension device of an automatic drive test vehicle according to claim 1, further comprising a shield (23) covering the secondary timing pulley (7) and the timing belt (8), wherein the shield (23) is fixedly connected with the swing arm (3).

8. The drive suspension device of the automatic drive test vehicle according to claim 5, further comprising a shield (23) covering the secondary synchronous pulley (7) and the synchronous belt (8), wherein the shield (23) is fixedly connected with the swing arm (3), and the shield (23) is provided with a notch (24) for the tension wheel (18) to pass through.

9. The drive suspension of an autonomous driving test vehicle according to claim 1, characterized in that the first axis of rotation (11) is removably connected to the support (1) and the third axis of rotation (15) is removably connected to the support (1).

10. The drive suspension of an autopilot test vehicle according to claim 4, characterized in that the second rolling bearing (25) is detachably connected to the side wall of the third through groove (17) in which it is located.

Technical Field

The invention relates to the technical field of suspension, in particular to a driving suspension device of an automatic driving test vehicle.

Background

With the rapid development of computer technology and artificial intelligence technology in recent years, the unmanned technology is one of the popular technologies being developed by all parties. Before commercial unmanned vehicles are released by automobile manufacturers, various tests are inevitably carried out to ensure the safety of the unmanned vehicles on the road. In order to test the safety and reliability of the unmanned automobile, the traffic road condition must be simulated in a test field, so that the test road condition is basically consistent with the real road condition, such as simulating the driving environment of pedestrians, non-motor vehicles and motor vehicles under various road conditions.

In order to ensure the safety of the test and prevent the tested vehicle from being damaged due to collision, the pedestrian, the non-motor vehicle, the motor vehicle and the like are replaced by models. At present, an automatic driving test vehicle is generally adopted to carry a pedestrian model and a non-motor vehicle model, and the motor vehicle model moves according to a set route to simulate driving environments under various road conditions. The existing drive suspension device of the automatic drive test vehicle adopts two-stage synchronous belt transmission, synchronous belt wheels are easy to loosen and fall off, the secondary transmission efficiency is lower, the reduction ratio is not improved, the structure is complex, and the manufacturing cost is high.

Disclosure of Invention

In order to solve the technical problems, the invention provides a driving suspension device of an automatic driving test vehicle, which is designed into primary synchronous belt transmission, has high transmission efficiency and simple structure, and a synchronous belt wheel is not easy to loosen and fall off.

In order to solve the problems, the invention adopts the following technical scheme:

the invention relates to a driving suspension device of an automatic driving test vehicle, which comprises a support, a motor, a swing arm, a shock absorber, a driving wheel, a main synchronous pulley, a secondary synchronous pulley and a synchronous belt, wherein a first through groove and a second through groove which are vertically arranged are arranged on the support side by side, the top end of the swing arm is positioned in the first through groove and is hinged with the support through a first rotating shaft, the motor is horizontally arranged at the outer side of the support, the second through groove is positioned between the first through groove and the motor, the shaft extension of the motor horizontally penetrates through the side wall of the support and extends into the second through groove, the main synchronous pulley is sleeved on the shaft extension of the motor, the shaft extension of the motor is coaxial with the first rotating shaft, the driving wheel is hinged with the bottom end of the swing arm through the second rotating shaft, the secondary synchronous pulley is sleeved on the second rotating shaft, the main synchronous pulley and the secondary synchronous pulley are positioned on the same plane, and the, the swing arm middle part is equipped with first through-hole, the shock absorber bottom stretch into first through-hole and with first through-hole inner wall lower part fixed connection, the shock absorber top stretches into first logical groove and is articulated through third pivot and support.

In this scheme, the support is the E font, and first logical groove is used for holding swing arm rotation center end, and the second leads to the groove and is used for holding the axle extension of primary synchronization pulley and motor. The swing arm can rotate around the first rotating shaft on the support, and because the shaft of the motor extends to be coaxial with the first rotating shaft, when the swing arm rotates, the main synchronous belt wheel, the auxiliary synchronous belt wheel and the synchronous belt can synchronously rotate along with the swing arm, so that the transmission function is not influenced.

When the driving wheel moves upwards, the spring of the shock absorber is compressed, the swing arm rotates around the first rotating shaft, the shock absorber rotates around the third rotating shaft, and the weight of the vehicle body is transmitted to the wheel through the support, the swing arm and the shock absorber. The motor rotates and drives the primary synchronous pulley to rotate, the primary synchronous pulley drives the secondary synchronous pulley to rotate, the secondary synchronous pulley drives the driving wheel to rotate, the scheme is designed into primary synchronous belt transmission, the transmission efficiency is high, the structure is simple, and the synchronous pulley is not easy to loosen and fall off.

Preferably, the swing arm is connected to the first rotating shaft through a first rolling bearing.

Preferably, the swing arm bottom is equipped with from last to running through the third of swing arm down and leads to the groove, the drive wheel is located the third and leads to the inslot, the second pivot level passes the both sides wall that the third led to the groove, follow synchronous pulley and be located the swing arm outside.

Preferably, a side wall of the third through groove is connected to the second rotating shaft through a second rolling bearing.

Preferably, the drive suspension device of the automatic driving test vehicle further comprises a tension pulley and a tension pulley adjusting mechanism for adjusting the height position of the tension pulley, wherein the tension pulley is arranged on the synchronous belt and tensions the synchronous belt. The take-up pulley is used for tensioning the hold-in range, guarantees transmission efficiency.

Preferably, the tensioning wheel adjusting mechanism is located between the swing arm and the synchronous belt, the tensioning wheel adjusting mechanism comprises an adjusting arm, an adjusting pull rod, an installation block and an adjusting nut, the bottom end of the adjusting arm is hinged to the swing arm, the top end of the adjusting arm is hinged to the tensioning wheel, the installation block is arranged on the swing arm, a second through hole for the adjusting pull rod to pass through is formed in the installation block, the adjusting nut is arranged on the installation block and can rotate around the central axis of the second through hole, a threaded hole of the adjusting nut is coaxial with the second through hole, a threaded section is arranged on the upper portion of the adjusting pull rod, the threaded section passes through the second through hole and is in threaded connection with the adjusting nut, and the bottom end of the adjusting pull rod is.

The tensioning wheel adjusting mechanism can adjust the position of the tensioning wheel in real time when the swing arm swings, so that the tensioning wheel can always tension the synchronous belt. The user accessible adjusting nut adjusts the relative position of take-up pulley and hold-in range, makes the take-up pulley tensioning hold-in range.

Preferably, the drive suspension device of the automatic drive test vehicle further comprises a shield covering the secondary synchronous pulley and the synchronous belt, and the shield is fixedly connected with the swing arm.

Preferably, the driving suspension device of the automatic driving test vehicle further comprises a shield covering the secondary synchronous belt wheel and the synchronous belt, the shield is fixedly connected with the swing arm, and a notch for the tension wheel to penetrate through is formed in the shield.

Preferably, the first rotating shaft is detachably connected with the support, and the third rotating shaft is detachably connected with the support. Is convenient to disassemble and maintain.

Preferably, the second rolling bearing is detachably connected with the side wall of the third through groove where the second rolling bearing is located. Is convenient to disassemble and maintain.

The invention has the beneficial effects that: adopt one-level synchronous belt drive, transmission efficiency is high, simple structure, and synchronous pulley is difficult not hard up and drops, and the shock absorber rotates along with the swing arm, and it is effectual to move away to avoid possible earthquakes, and the take-up pulley rotates along with the swing arm, tensioning hold-in range all the time.

Drawings

FIG. 1 is a schematic structural view of an embodiment;

FIG. 2 is a top view of the embodiment;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view B-B of FIG. 2;

FIG. 5 is a cross-sectional view C-C of FIG. 2;

FIG. 6 is a cross-sectional view D-D of FIG. 2;

fig. 7 is a left side view of the embodiment.

In the figure: 1. the device comprises a support, 2, a motor, 3, a swing arm, 4, a shock absorber, 5, a driving wheel, 6, a main synchronous belt wheel, 7, a secondary synchronous belt wheel, 8, a synchronous belt, 9, a first through groove, 10, a second through groove, 11, a first rotating shaft, 12, a shaft extension, 13, a second rotating shaft, 14, a first through hole, 15, a third rotating shaft, 16, a first rolling bearing, 17, a third through groove, 18, a tension wheel, 19, an adjusting arm, 20, an adjusting pull rod, 21, an installation block, 22, an adjusting nut, 23, a shield, 24, a notch, 25 and a second rolling bearing.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.