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CN-121994514-A - Whole vehicle wheel end loading system and loading method suitable for environment cabin

CN121994514ACN 121994514 ACN121994514 ACN 121994514ACN-121994514-A

Abstract

The invention relates to a whole vehicle wheel end loading system and a loading method thereof, which are applicable to an environmental cabin, wherein the environmental cabin provides a high-temperature or low-temperature test environment of a vehicle to be tested; the road resistance loading device comprises a first transmission part, a first supporting mechanism, a first transmission part, a toothed transmission structure, a loading power source, a second transmission part and a driving shaft, wherein the first transmission part is used for supporting a vehicle body of a vehicle to be tested, the toothed transmission structure is arranged on the outer circumference of a tire, the loading power source is connected with the driving shaft and used for transmitting torque output by the loading power source, and the second transmission part is connected with the first transmission part and combined with the driving shaft to realize road resistance loading of the vehicle to be tested. The whole vehicle wheel end loading system suitable for the environment cabin realizes torque transmission through the external loading power source and the internal transmission chain, avoids the disassembly of tires and reduces space occupation, and meanwhile, the external heat source does not interfere with the temperature of the environment cabin, so that the real road resistance is simulated efficiently, and the whole vehicle wheel end loading system has the advantages of improving the space utilization rate, reducing the operation complexity, avoiding heat interference with the temperature of the environment cabin and realizing the real road resistance simulation.

Inventors

  • WANG LI

Assignees

  • 上海车右智能科技有限公司

Dates

Publication Date
20260508
Application Date
20260225

Claims (10)

  1. 1. The utility model provides a whole car wheel end loading system suitable for in environment cabin which characterized in that includes: The environment cabin is used for accommodating a vehicle to be tested and providing a high-temperature or low-temperature test environment of the vehicle to be tested; The support mechanism is used for supporting the body of the vehicle to be tested so that the tires of the vehicle to be tested are in a suspended state and do not bear the weight of the vehicle to be tested; a first transmission member which is a tooth-shaped transmission structure mounted on an outer circumference of the tire so as to change the tire into a part of the tooth-shaped transmission structure; The loading power source is arranged outside the environmental chamber, the output end of the loading power source is connected with a transmission shaft, one end of the transmission shaft penetrates through the environmental chamber and extends to the interior of the environmental chamber, and the transmission shaft is used for transmitting torque output by the loading power source; the second transmission part is arranged at one end of the transmission shaft extending into the environment cabin, and is connected with the first transmission part and combined with the transmission shaft to form a transmission chain so as to realize the transmission of the torque output by the loading power source to the tire, thereby realizing the loading of the road resistance of the vehicle to be tested.
  2. 2. The wheel end loading system for the whole vehicle in the environmental chamber according to claim 1, wherein the first transmission member is a toothed element arranged on the circumferential surface of the tire.
  3. 3. The wheel end loading system for the whole vehicle in the environmental chamber according to claim 2, wherein the second transmission part adopts a bevel gear or a drum gear, and the toothed element on the surface of the tire is meshed with the bevel gear or the drum gear so as to realize transmission to transmit the torque of the loading power source to the tire.
  4. 4. The wheel end loading system for a vehicle adapted to be used in an environmental chamber according to claim 3, wherein the supporting mechanism is configured to have a floating structure in a vertical direction for fine adjustment in a vertical direction of a body of the vehicle to be tested to achieve engagement of the toothed element with the helical gear or the crown gear, and for compensating for runout of the tire.
  5. 5. The wheel end loading system for the whole vehicle in the environmental chamber according to claim 1, wherein a torque sensor is arranged on the transmission shaft and is configured to measure actual loading torque transmitted to the transmission shaft by the loading power source.
  6. 6. The wheel end loading system for a vehicle adapted for use in an environmental chamber of claim 2 wherein said toothed elements are segmented and each segment is mounted to said tire circumferential surface.
  7. 7. The wheel end loading system for the whole vehicle in the environmental chamber of claim 1, wherein the support mechanism is provided with a pressure sensor configured to detect a normal force of engagement between the first transmission member and the second transmission member.
  8. 8. The wheel end loading system for a vehicle in an environmental chamber according to any one of claims 1 to 7, wherein the vehicle to be tested is capable of selectively loading a single tire, two tires, three tires or four tires.
  9. 9. The wheel end loading system for the whole vehicle in the environmental chamber according to any one of claims 1 to 7, wherein the connection part of the transmission shaft and the environmental chamber adopts magnetic fluid sealing or mechanical sealing.
  10. 10. The whole vehicle wheel end loading method suitable for the environmental cabin is based on the whole vehicle wheel end loading system suitable for the environmental cabin as claimed in any one of claims 1 to 7, and is characterized by comprising the following steps: S1, supporting a vehicle body of the vehicle to be tested by the supporting mechanism, so that all tires of the vehicle to be tested are suspended and do not bear the dead weight of the vehicle; S2, mounting a first transmission part on each tire to be tested of the vehicle to be tested, or using a tire with tooth shape, so that the tire to be tested is effectively converted into a large gear; S3, adjusting the first transmission part through the supporting mechanism to enable the first transmission part to be slightly meshed with the second transmission part, ensuring stable and reliable torque transmission between the second transmission part and the first transmission part, and simultaneously avoiding applying extra vertical load to the tire to be tested; s4, the loading power source generates loading torque simulating road resistance outside the environmental cabin, and the loading torque is transmitted to the interior of the environmental cabin through the transmission shaft; S5, the transmission part II transmits the received torque to the transmission part I meshed with the transmission part II, so that simulated road resistance is applied to the tire to be tested, and the torque of the road resistance passes through the tire to be tested, the hub, the half shaft, the transmission system, the engine or the vehicle driving motor, so that the loading of the whole vehicle power system is realized.

Description

Whole vehicle wheel end loading system and loading method suitable for environment cabin Technical Field The invention relates to the technical field of automobile testing, in particular to a whole vehicle wheel end loading system and a loading method thereof, which are applicable to an environmental cabin. Background In the prior art, when a vehicle is subjected to a dynamic test of a high-temperature environment cabin and a low-temperature environment cabin, a chassis dynamometer (comprising a roller type, a rotary hub type and a shaft dynamometer) which is commonly adopted has a serious mechanical tight coupling problem. The concrete steps are as follows: 1. The space occupation is large, the device is not suitable for the arrangement of environmental chambers, the volume of a roller type dynamometer is large, the basic requirement is high, the rotating hub type dynamometer is small, a loading motor or a speed reducer with large volume is arranged at the wheel end, and the shaft dynamometer also needs a large environmental chamber to facilitate the preassembling and the dismounting of a connecting piece. These all result in low space utilization in the environmental chamber and are difficult to arrange within a limited volume. 2. The preassembly and disassembly workload is high, the vehicle replacement efficiency is low, the rotating hub type dynamometer needs to disassemble tires, the preassembly workload is high, the axle dynamometer needs to disassemble or refit a vehicle transmission system, the axle dynamometer is not suitable for a prototype vehicle test of the whole vehicle, and the whole vehicle cannot be guaranteed to be in a complete state. This is disadvantageous for quick change and multi-vehicle type adaptation. 3. The heat interference is serious, and the temperature control precision is affected, namely, a great amount of heat can be generated when the loading equipment body (such as a motor and a speed reducer) works, if the loading equipment body is placed in an environment cabin, the uniformity of a temperature field in the cabin can be obviously affected, the temperature control precision of the environment cabin is interfered, and particularly when a low-temperature test is carried out, a great amount of energy can be wasted by the great heat, so that the requirement of a new energy automobile on a-40-DEG low-temperature environment is difficult to reach. 4. The actual wheel end loading is difficult to realize under the condition that the tire is not disassembled and the transmission system is not refitted by the existing method. The above problems result in the existing chassis dynamometer not being fully suitable for environmental cabin tests, making the environmental cabin very large, and bringing huge energy consumption and operation costs, and it is difficult to guarantee the accuracy and efficiency of the tests. Disclosure of Invention Therefore, the invention aims to provide a whole vehicle wheel end loading system and method suitable for an environmental cabin, which have the advantages of improving space utilization rate, reducing operation complexity, avoiding heat interference with the temperature of the environmental cabin and realizing real road resistance simulation. The invention provides a whole vehicle wheel end loading system and a loading method thereof, which are suitable for an environmental cabin, and the whole vehicle wheel end loading system comprises the environmental cabin, a supporting mechanism, a transmission part I, a loading power source and a transmission chain, wherein the environmental cabin is used for accommodating a vehicle to be tested and providing a high-temperature or low-temperature test environment of the vehicle to be tested, the supporting mechanism is used for supporting a vehicle body of the vehicle to be tested so that a tire of the vehicle to be tested is in a suspended state and does not bear the weight of the vehicle to be tested, the transmission part I is a tooth-shaped transmission structure arranged on the outer circumference of the tire, so that the tire is changed into a part of the tooth-shaped transmission structure, the loading power source is arranged outside the environmental cabin, the output end of the loading power source is connected with a transmission shaft, one end of the transmission shaft penetrates through the environmental cabin and extends into the interior of the environmental cabin, the transmission shaft is used for transmitting torque output by the loading power source, and the transmission part II is arranged at one end of the transmission shaft extending into the interior of the environmental cabin, and is connected with the transmission part I and combined with the transmission part I, so that the transmission part II is used for realizing the transmission chain to realize the transmission of the torque output of the vehicle to be loaded, and the vehicle to realize the load resistance to the vehicle. In o