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CN-224224839-U - Autonomous driving type semi-trailer chassis system

CN224224839UCN 224224839 UCN224224839 UCN 224224839UCN-224224839-U

Abstract

The utility model discloses an autonomous driving type semi-trailer chassis system, and belongs to the technical field of semi-trailers. The utility model relates to a frame welding assembly consisting of a traction pin seat and a main frame, wherein the traction pin seat is provided with a traction pin for connecting a tractor, the main frame is provided with an air suspension assembly, the air suspension assembly comprises an electric drive axle air suspension, the electric drive axle air suspension comprises a drive axle housing and a pair of guide arm assemblies arranged on the drive axle housing, an installation space for installing a power source assembly is formed on the drive axle housing, and a thrust rod assembly is connected between the two guide arm assemblies. The power source assembly is integrated on the drive axle of the trailer, so that a series of defects caused by the fact that the traditional semi-trailer does not have autonomous driving capability are overcome, meanwhile, the assembly space of a battery pack is not occupied, and the continuous voyage mileage of the whole trailer is improved.

Inventors

  • LIU BIN
  • WANG XIAOXIA
  • HUANG XIANG

Assignees

  • 新一代汽车底盘系统(苏州)有限公司

Dates

Publication Date
20260512
Application Date
20250630

Claims (10)

  1. 1. The self-driven semitrailer chassis system comprises a frame welding assembly (100) formed by a traction pin seat (110) and a main frame (120), wherein the traction pin seat (110) is provided with a traction pin (111) for connecting a tractor, and the main frame (120) is provided with an air suspension assembly, and is characterized in that the air suspension assembly comprises an electrically driven bridge air suspension (200 a); the electrically driven axle air suspension (200 a) comprises a drive axle housing (210) and a pair of guide arm assemblies (220) arranged on the drive axle housing (210), wherein, An installation space (211) for installing a power source assembly (230) is formed on the driving axle housing (210), and a thrust rod assembly (240) is connected between the two guide arm assemblies (220); the thrust rod assembly (240) comprises a first support (241) and a rotating disc (242) arranged on the first support (241), a pair of thrust rods (243) which are distributed up and down are arranged on the rotating disc (242), the free ends of the two thrust rods (243) extend towards opposite directions and are connected with a second support (244), and the second support (244) is connected with the main frame (120).
  2. 2. The self-propelled semitrailer chassis system of claim 1, wherein the drive axle housing (210) comprises a first portion (212) and a second portion (213) located on both sides of the first portion (212), wherein the first portion (212) is greater in height than the second portion (213), the mounting space (211) is disposed on the first portion (212), the guide arm assembly (220) is disposed on the second portion (213), and a tire assembly (250) is connected to a free end of the second portion (213).
  3. 3. The self-propelled semitrailer chassis system of claim 2, wherein the guide arm assembly (220) comprises a guide arm (221) arranged below the second portion (213), a guide arm bracket (222) is connected to a first end of the guide arm (221), an air spring (223) is connected to a second end of the guide arm, and the tops of the guide arm bracket (222) and the air spring (223) are connected to the main frame (120).
  4. 4. An autonomously driven semitrailer chassis system according to claim 3, characterized in that the ends of the first support (241) are connected to the second ends of the two guide arms (221), respectively, and the rotating disc (242) is rotatably arranged outside the first support (241).
  5. 5. The self-driven semitrailer chassis system according to claim 3, wherein a shock absorber (224) is arranged between the guide arm (221) and the main frame (120), and the shock absorbers (224) are vertically distributed.
  6. 6. The self-driving semitrailer chassis system according to claim 5, wherein the main frame (120) is integrally formed into a frame structure formed by a plurality of longitudinal beams (121) and cross beams (122), a first mounting seat (123) for connecting an air spring (223) is arranged at the bottom of each longitudinal beam (121), and a second mounting seat (124) for connecting a shock absorber (224) is arranged on the side wall of each longitudinal beam (121).
  7. 7. An autonomous driving semitrailer chassis system as claimed in claim 6, wherein said longitudinal beams (121) are connected with a pad (125), and wherein the lower surfaces of said longitudinal beams (121) and pad (125) together form a mounting surface for connection with a guide arm bracket (222).
  8. 8. An autonomously driven semitrailer chassis system according to claim 7, characterized in that the side walls of the stringers (121) are provided with stiffening plates (126) at least in the area where the pad plates (125), the first mounting seats (123) are provided.
  9. 9. An autonomously driven semitrailer chassis system according to claim 1, wherein the towing pin (110) is integrated with a pressure sensor for sensing load transfer between the tractor and the trailer.
  10. 10. An autonomous driving semitrailer chassis system according to any of claims 1-9, wherein said air suspension assembly further comprises two unpowered air suspensions (200 b), said electrically driven bridge air suspension (200 a) being arranged between the two unpowered air suspensions (200 b).

Description

Autonomous driving type semi-trailer chassis system Technical Field The utility model belongs to the technical field of semitrailers, and particularly relates to an autonomous driving type semitrailer chassis system. Background At present, heavy multi-axle semitrailers are mostly used in China when transporting single super-long overweight cargoes, and the heavy multi-axle semitrailers are connected by heavy tractors through traction pins. However, the conventional semitrailer does not have an autonomous driving capability because of no power device, and is driven by only a tractor. This results in a large slip ratio due to the change of the center of gravity of the whole body in some severe conditions or large-angle climbing, thereby reducing the normal running efficiency of the semitrailer, which greatly reduces the off-road performance and maneuverability of the multi-axle semitrailer and cannot overcome rough mountain roads and steep slopes. Meanwhile, with the promotion of the related policies of carbon neutralization in China, the application of new energy sources on semitrailers is correspondingly developed. For example, CN113246745A discloses an auxiliary driving control method for a new energy semitrailer and a new energy semitrailer. This application can realize setting up the electric drive system on the semitrailer and the cooperation of traditional power drive on the tractor for whole car can obtain overcoming the ability of abominable car condition, like climbing, downhill path of heavy grade or long distance, the going on muddy road such as sleet sky, improves through efficiency and security, and can increase whole car's continuation of journey mileage. For another example, in CN119058378a, a new energy semitrailer and auxiliary drive control system are disclosed. This application can regulate and control drive assembly according to the road conditions that traveles to make the semitrailer can carry out auxiliary drive under different road conditions, and in the travel of semitrailer, can charge to the battery in step, and then promote duration. The application relates to application of a new energy technology on a semitrailer, not only solves a series of defects caused by the fact that the traditional semitrailer does not have autonomous driving capability, but also can effectively prolong the endurance mileage of the whole vehicle. However, in the above application, the power source system of the semitrailer is arranged at the bottom of the chassis, which occupies a certain space of the chassis, naturally reduces the installable space of the battery, thereby being unfavorable for the elevation of the range, and on the other hand, the transmission distance between the power source and the drive axle is longer, thereby increasing the energy loss and being unfavorable for the elevation of the range. Disclosure of utility model 1. Problems to be solved In view of at least some of the above problems in the prior art, the present utility model is directed to an autonomous semi-trailer chassis system. The power source system is integrated on the drive axle of the semi-trailer, so that a series of defects caused by the fact that the traditional semi-trailer does not have autonomous driving capability are overcome, and meanwhile, the endurance mileage can be effectively improved. 2. Technical proposal In order to solve the problems, the technical scheme adopted by the utility model is as follows: The utility model relates to an autonomous driving type semitrailer chassis system, which comprises a frame welding assembly composed of a traction pin seat and a main frame, wherein the traction pin seat is provided with a traction pin for connecting a tractor, and the main frame is provided with an air suspension assembly; The air suspension assembly comprises an electrically driven bridge air suspension; The electric drive axle air suspension comprises a drive axle housing and a pair of guide arm assemblies arranged on the drive axle housing, wherein, The driving axle housing is provided with an installation space for installing the power source assembly, and a thrust rod assembly is connected between the two guide arm assemblies; The thrust rod assembly comprises a first support and a rotating disc arranged on the first support, wherein a pair of thrust rods which are distributed up and down are arranged on the rotating disc, the free ends of the two thrust rods extend towards opposite directions and are connected with a second support, and the second support is connected with the main frame. In some embodiments, the driving axle housing comprises a first part and second parts positioned on two sides of the first part, wherein the first part is larger in height than the second part, the installation space is formed in the first part, the guide arm assembly is formed in the second part, and the free end of the second part is connected with the tire assembly. In some embodiments, the guide arm assembly co