CN110649757A - Electric drive system of unmanned test platform vehicle - Google Patents
Electric drive system of unmanned test platform vehicle Download PDFInfo
- Publication number
- CN110649757A CN110649757A CN201910796156.8A CN201910796156A CN110649757A CN 110649757 A CN110649757 A CN 110649757A CN 201910796156 A CN201910796156 A CN 201910796156A CN 110649757 A CN110649757 A CN 110649757A
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- Prior art keywords
- brake
- driving
- motor
- back plate
- test platform
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/1004—Structural association with clutches, brakes, gears, pulleys or mechanical starters with pulleys
- H02K7/1008—Structural association with clutches, brakes, gears, pulleys or mechanical starters with pulleys structurally associated with the machine rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The invention belongs to the technical field of unmanned vehicle testing, and discloses an electric drive system of an unmanned testing platform vehicle. The system adopts double-motor driving and is matched with a braking system positioned at the motor end, so that the space at the wheel is saved, the weight of the wheel end is reduced, the driving efficiency is high, and the reliability and the stability of the driving and the braking of the whole vehicle are improved.
Description
Technical Field
The invention belongs to the technical field of unmanned vehicle testing, and particularly relates to an electric driving system of an unmanned testing platform vehicle.
Background
In recent years, unmanned vehicles have been the subject of research, and various driving modes of unmanned vehicles have appeared, and few researches have been made on driving systems of unmanned platform vehicles used for testing. The unmanned test platform vehicle has the advantages of high requirement on the performance of the whole vehicle, low integral height of a chassis, small ground clearance, limited arrangement space and capability of meeting the driving and braking requirements of the platform vehicle under different test requirements. The motor power density that modern electric automobile's actuating system generally adopted is not high, therefore motor power is big, and size, quality are inevitable very big, must lead to the fact harmful effects to whole car performance like this, and the motor is arranged and inflexible in the car moreover, can influence the car inner space probably, is difficult to satisfy the requirement of arranging of platform truck.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an electric drive system of an unmanned test platform vehicle, which can meet the drive and brake requirements of the test platform vehicle under different test requirements, and simultaneously improves the reliability and stability of the drive and brake of the whole vehicle.
In order to achieve the purpose, the invention specifically adopts the following technical scheme:
an electric drive system of an unmanned test platform vehicle comprises a vehicle body bottom plate, wherein a vehicle frame cross beam and a vehicle frame longitudinal beam are arranged on the vehicle body bottom plate, two electric drive devices which are in mirror symmetry are fixed on the vehicle frame longitudinal beam, and each electric drive device comprises a drive motor, a drive synchronous belt pulley, a flange shaft, a bearing and a brake system; the output shaft of the rotor of the driving motor is fixedly connected with one end of a driving synchronous belt pulley, the other end of the driving synchronous belt pulley is fixedly connected with a flange surface of a flange shaft, the shaft end of the flange shaft is connected with a bearing, and the bearing is positioned in a bearing seat; the brake system comprises a brake disc, a brake caliper support and a brake back plate, the brake disc is installed on the section of a hub of the flange shaft, the brake caliper clamps two sides of the brake disc, two ends of the brake caliper support are respectively connected with the brake caliper and the brake back plate, and the brake back plate is fixed on the frame longitudinal beam.
Preferably, the driving motor is fixed on the frame longitudinal beam through a motor mounting bolt, and further, the motor mounting bolt sequentially penetrates through a flange surface of the driving motor, the frame longitudinal beam, the motor fixing support and the brake back plate and fixedly connects the flange surface, the frame longitudinal beam, the motor fixing support and the brake back plate together.
More preferably, the brake back plate is further provided with a brake back plate mounting bolt.
Preferably, the brake caliper bracket and the brake back plate are of an integrated structure.
Preferably, the bearing seat is fixed on the vehicle body bottom plate through a bearing seat mounting bolt.
Preferably, the flange end face of the flange shaft is fixed on the driving synchronous pulley through a flange shaft mounting bolt.
The invention has the beneficial effects that: (1) the electric drive system provided by the invention integrates the double motors, the synchronous belt transmission mechanism and the brake system, the arrangement requirement of the unmanned test platform vehicle is easily met, the transmission efficiency of the drive system is higher, and the dynamic control of the chassis system of the whole vehicle is more flexible and convenient. (2) The synchronous belt transmission mechanism has the advantages of stable operation, low noise, constant transmission ratio and the like. Compared with gear transmission, the synchronous belt transmission mechanism has the outstanding advantages of high transmission efficiency, strong adaptability, no need of lubrication and sealing, low cost, small occupied space, easy satisfaction of the arrangement and driving requirements of the test platform car and the like. (3) The brake system is arranged at the motor end, so that the influence of wheel swing on the brake system is effectively overcome, and the weight of the wheel end is reduced. Meanwhile, the space at the wheel is saved by the integrated structure of integrating the motor output, the synchronous belt transmission and the braking system. (4) The structure that increases bearing and bearing frame support at flange axle tip, because flange axle and motor shaft are concentric and link firmly, so increase the rigidity that the bearing supported and can guarantee the motor shaft and satisfy the requirement.
Drawings
Fig. 1 is a perspective structural view of an electric drive system of an unmanned test platform vehicle according to an embodiment of the present invention;
FIG. 2 is a top view of an electric drive system for an unmanned test platform vehicle according to an embodiment of the present invention;
in the figure: 1-driving motor, 2-frame cross beam, 3-frame longitudinal beam, 4-motor fixing support, 5-driving synchronous pulley, 6-flange shaft, 7-bearing, 8-bearing seat, 9-bearing seat mounting bolt, 10-motor mounting bolt, 11-flange shaft mounting bolt, 12-brake disc, 13-brake disc mounting bolt, 14-brake caliper, 15-brake caliper support, 16-brake back plate mounting bolt, 17-brake back plate and 18-underbody.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following further describes the technical solution of the present invention with reference to the drawings and the embodiments.
As shown in fig. 1 and 2, an electric drive system of an unmanned test platform vehicle comprises a vehicle body bottom plate 18, a frame cross beam 2 and a frame longitudinal beam 3 which are vertically arranged on the vehicle body bottom plate 18, wherein the frame cross beam 2 and the frame longitudinal beam 3 are mutually vertical, two electric drive devices which are in mirror symmetry are fixedly arranged on a vehicle frame structure formed by the vehicle body bottom plate 18, the frame cross beam 2 and the frame longitudinal beam 3, and each electric drive device comprises a drive motor 1, a drive synchronous pulley 5, a flange shaft 6, a bearing 7 and a brake system.
The output shaft of the rotor of the driving motor 1 is fixedly connected with one end of a driving synchronous pulley 5, further, the output shaft of the rotor of the driving motor 1 is connected with the driving synchronous pulley 5 through a flat key, the other end of the driving synchronous pulley 5 is fixedly connected with the flange surface of a flange shaft 6 through a flange shaft mounting bolt 11, the shaft end part of the flange shaft 6 is connected with a bearing 7, the bearing 7 is positioned in a bearing seat 8, the bearing seat 8 is fixed on a vehicle body bottom plate 18 through a bearing seat mounting bolt 9, and the shaft end of the flange shaft is supported on the bearing and the bearing seat to ensure that the rigidity of a motor shaft meets requirements.
The brake system comprises a brake disc 12, a brake caliper 14, a brake caliper support 15 and a brake back plate 17, wherein the brake disc 12 is mounted on the hub section of the flange shaft 6 through a brake disc mounting bolt 13, friction blocks of the brake caliper 14 are located on two sides of the brake disc 12 and used for clamping two sides of the brake disc, the brake caliper support 15 is used for connecting the brake caliper 14 and the brake back plate 17, preferably, the brake caliper 14, the brake caliper support 15 and the brake back plate 17 are of an integrated structure, and the brake back plate 17 is fixed on the frame longitudinal beam 3 through a brake back plate mounting bolt 16 so as to fix the brake caliper 14 and the brake caliper support 15.
The driving motor 1 is fixed on the frame longitudinal beam 3 through a motor mounting bolt 10, and specifically, the motor mounting bolt 10 sequentially penetrates through a flange surface of the driving motor 1, the frame longitudinal beam 3, the motor fixing bracket 4 and the brake back plate 17 and fixes the components together.
In each electric drive device, a drive motor 1, a frame rail 3, a driving synchronous pulley 5, a flange shaft 6, a brake disc 12, a bearing 7 and a bearing seat 8 are assembled into an integrated power assembly. The working principle is as follows: after the driving motor is electrified, the driving motor starts to work simultaneously, namely, torque is output outwards, power is transmitted to the rear driving wheel through the synchronous belt transmission mechanism, and the platform truck is driven to run forwards; when the whole vehicle brakes, the brake applies a braking torque to the brake disc on the flange shaft, and the braking torque acts on the driving synchronous belt wheel and the motor shaft and is transmitted to the rear driving wheel through the synchronous belt transmission mechanism, so that the whole vehicle brake is realized. Synchronous belt drive mechanism is prior art, specifically is: the output torque of the motor is transmitted to the axle through the driving synchronous belt wheel, the synchronous belt and the driven synchronous belt wheel, and drives the rear wheel.
The invention adopts a driving form of dual-motor driving, two driving motors are respectively arranged at two sides of a rear driving wheel, and the wheels are directly driven after power is transmitted through a synchronous belt transmission mechanism, so that the problem of insufficient power of a single driving motor is solved, and the driving motor can select a motor with smaller power. In addition, the brake system at the motor end is matched, namely the brake system directly acts on the driving synchronous pulley connected with the motor shaft, so that the influence of wheel swing on the brake system is overcome, and the weight of the wheel end is reduced. Meanwhile, the space at the wheel is saved by the integrated structure of integrating the motor output, the synchronous belt transmission and the braking system.
The above is, of course, only a specific application example of the present invention, and the scope of the present invention is not limited in any way. In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by using equivalent substitutions or equivalent transformations fall within the scope of the present invention.
Claims (6)
1. The electric driving system of the unmanned test platform vehicle is characterized by comprising a vehicle body bottom plate (18), wherein a vehicle frame cross beam (2) and a vehicle frame longitudinal beam (3) are arranged on the vehicle body bottom plate (18), two electric driving devices which are in mirror symmetry are fixed on the vehicle frame longitudinal beam (3), and each electric driving device comprises a driving motor (1), a driving synchronous belt pulley (5), a flange shaft (6), a bearing (7) and a braking system;
the output shaft of the rotor of the driving motor (1) is fixedly connected with one end of a driving synchronous belt pulley (5), the other end of the driving synchronous belt pulley (5) is fixedly connected with the flange surface of a flange shaft (6), the shaft end of the flange shaft (6) is connected with a bearing (7), and the bearing (7) is positioned in a bearing seat (8);
the brake system comprises a brake disc (12), a brake caliper (14), a brake caliper support (15) and a brake back plate (17), the brake disc (12) is installed on the section of a hub of the flange shaft (6), the brake caliper (14) clamps two sides of the brake disc (12), two ends of the brake caliper support (15) are respectively connected with the brake caliper (14) and the brake back plate (17), and the brake back plate (17) is fixed on the frame longitudinal beam (3).
2. The electric drive system of the unmanned test platform vehicle according to claim 1, wherein the drive motor (1) is fixed on the frame longitudinal beam (3) through a motor mounting bolt (10), and the motor mounting bolt (10) sequentially penetrates through a flange surface of the drive motor (1), the frame longitudinal beam (3), the motor fixing bracket (4) and the brake back plate (17).
3. An unmanned test platform vehicle electric drive system according to claim 2, wherein brake back plate (17) is further provided with brake back plate mounting bolts (16).
4. An electric drive system for an unmanned test platform vehicle according to claim 1, wherein the brake caliper (14), the brake caliper bracket (15) and the brake back plate (17) are of a unitary construction.
5. An unmanned test platform vehicle electric drive system according to claim 1, wherein the bearing housing (8) is secured to the underbody (18) by a bearing housing mounting bolt (9).
6. An electric drive system for an unmanned test platform vehicle according to claim 1, wherein the flange end face of the flange shaft (6) is fixed to the driving synchronous pulley (5) by means of a flange shaft mounting bolt (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910796156.8A CN110649757A (en) | 2019-08-22 | 2019-08-22 | Electric drive system of unmanned test platform vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910796156.8A CN110649757A (en) | 2019-08-22 | 2019-08-22 | Electric drive system of unmanned test platform vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN110649757A true CN110649757A (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910796156.8A Pending CN110649757A (en) | 2019-08-22 | 2019-08-22 | Electric drive system of unmanned test platform vehicle |
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| CN (1) | CN110649757A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380699A (en) * | 2020-03-31 | 2020-07-07 | 重庆广播电视大学重庆工商职业学院 | Unmanned test platform car |
| CN113879088A (en) * | 2021-09-30 | 2022-01-04 | 中汽研（天津）汽车工程研究院有限公司 | Drive-by-wire chassis system of intelligent networking test equipment |
Citations (4)
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| DE69611296T2 (en) * | 1995-05-31 | 2001-04-26 | New York Inst Of Technology Ol | METHOD FOR DISTRIBUTING ENERGY FOR ELECTRIC HYBRID VEHICLES |
| CN205888804U (en) * | 2016-08-09 | 2017-01-18 | 刘源军 | Board -like material grinder owner sand roller transmission connecting device |
| CN208109417U (en) * | 2018-02-28 | 2018-11-16 | 航天南洋（浙江）科技有限公司 | A kind of sliding platform |
| CN110039982A (en) * | 2019-05-30 | 2019-07-23 | 深圳数翔科技有限公司 | The driving of electric heavy type load-carrying vehicle and braking integrated system |
-
2019
- 2019-08-22 CN CN201910796156.8A patent/CN110649757A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69611296T2 (en) * | 1995-05-31 | 2001-04-26 | New York Inst Of Technology Ol | METHOD FOR DISTRIBUTING ENERGY FOR ELECTRIC HYBRID VEHICLES |
| CN205888804U (en) * | 2016-08-09 | 2017-01-18 | 刘源军 | Board -like material grinder owner sand roller transmission connecting device |
| CN208109417U (en) * | 2018-02-28 | 2018-11-16 | 航天南洋（浙江）科技有限公司 | A kind of sliding platform |
| CN110039982A (en) * | 2019-05-30 | 2019-07-23 | 深圳数翔科技有限公司 | The driving of electric heavy type load-carrying vehicle and braking integrated system |
Non-Patent Citations (2)
| Title |
|---|
| 杜常清等: "永磁同步电机控制策略对比仿真研究", 《数字制造科学》 * |
| 赵振宁: "《新能源汽车技术概述》", 31 January 2016, 北京理工大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380699A (en) * | 2020-03-31 | 2020-07-07 | 重庆广播电视大学重庆工商职业学院 | Unmanned test platform car |
| CN113879088A (en) * | 2021-09-30 | 2022-01-04 | 中汽研（天津）汽车工程研究院有限公司 | Drive-by-wire chassis system of intelligent networking test equipment |
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Application publication date: 20200103 |