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CN-121973855-A - Shock absorption connecting mechanism for forming auxiliary beam and main beam of cross-country chassis

CN121973855ACN 121973855 ACN121973855 ACN 121973855ACN-121973855-A

Abstract

The invention relates to the technical field of auxiliary frames, in particular to a shock absorption connecting mechanism for a formed auxiliary beam and a main beam of an off-road chassis, which comprises an upper corner bracket and a lower corner bracket, wherein the upper corner bracket is fixedly connected with the formed auxiliary beam, the lower angle sign indicating number girder fixed connection, be equipped with connection module on the upper angle sign indicating number, connection module includes shell body and connecting rod, shell body fixed connection is on the upper angle sign indicating number. According to the invention, the traditional rigid connection is changed into the controllable flexible connection through the magnetorheological fluid damping buffer structure, so that the main beam is allowed to generate relative deformation with a certain amplitude, structural stress is released, the main beam is prevented from cracking due to stress concentration, the viscosity of the magnetorheological fluid can be changed in real time through the magnetic field regulation of the coil, the connection rigidity and the damping are dynamically adjusted, the working condition requirement of a new energy cross-country caravan auxiliary beam for bearing a large-mass battery pack is adapted, when the vehicle generates large inertial impact, the connection rigidity can be rapidly improved, excessive swing of the auxiliary beam is restrained, and the running stability of the vehicle is improved.

Inventors

  • GUO YONGXIANG
  • GUO YAN

Assignees

  • 江苏中意汽车有限公司

Dates

Publication Date
20260505
Application Date
20260401

Claims (8)

  1. 1. The utility model provides a shock attenuation coupling mechanism for shaping auxiliary girder and girder of cross country chassis, includes upper corner sign indicating number (1) and lower corner sign indicating number (2), upper corner sign indicating number (1) and shaping auxiliary girder (9) fixed connection, lower corner sign indicating number (2) and girder (8) fixed connection, characterized in that, be equipped with on upper corner sign indicating number (1) connecting module (3), connecting module (3) include shell body (31) and connecting rod (32), shell body (31) fixed connection is on upper corner sign indicating number (1), the upper and lower both ends of shell body (31) are provided with upper cover (33), lower cover (34) respectively, upper cover (33) and lower cover (34) are made by elastic material, and upper cover (33) and lower cover (34) seal the upper and lower both ends of shell body (31), connecting rod (32) and shell body (31) coaxial setting, just connecting rod (32) upper end and upper cover (33) fixed connection, lower cover (34) and connecting rod (32) are fixed connection to the connecting rod (8 mm when the connecting rod (8 mm) of the side of connecting rod (2) of extension vehicle auxiliary girder and lower corner sign indicating number (2) are fixed connection, the coaxial fixedly connected with baffle (35) in shell body (31), baffle (35) divide into liquid chamber (31 a) and liquid chamber (31 b) down with the inside separation of shell body (31), liquid chamber (31 a) are located the upside, liquid chamber (31 a) and liquid chamber (31 b) intussuseption are filled with magnetorheological fluid, be equipped with the connecting channel of liquid chamber (31 a) and liquid chamber (31 b) in the intercommunication on baffle (35), the coaxial fixed mounting of lateral wall of shell body (31) has coil (4).
  2. 2. The shock absorption connecting mechanism for the formed auxiliary beams and the main beams of the cross-country chassis according to claim 1, wherein the connecting channel comprises a first channel (35 a) and a second channel (35 b), the first channel (35 a) is arranged on the side wall of the partition board (35), the first channel (35 a) is spiral and spirals 3-6 circles along the side wall of the partition board (35), the cross-section diameter of the first channel (35 a) is 1 mm-3 mm, the spiral path length is 60 mm-180 mm, the second channel (35 b) penetrates through the upper end face and the lower end face of the partition board (35), and the diameter of the second channel (35 b) is 5 mm-15 mm, and the number of the second channels is 4.
  3. 3. The shock absorption connecting mechanism for the forming auxiliary beams and the main beams of the cross-country chassis according to claim 2, wherein a plurality of decoupling films (5) are arranged in the second channels (35 b), the thickness of each decoupling film (5) is 0.5 mm-1.5 mm, the decoupling films (5) and the second channels (35 b) are fixedly connected in a coaxial mode, two mutually symmetrical second channels (35 b) are arranged into a group, one group of decoupling films (5) is arranged on the upper side of the second channels (35 b), the other group of decoupling films (5) is arranged on the lower side of the second channels (35 b), and the decoupling films (5) are made of elastic materials.
  4. 4. The shock-absorbing connecting mechanism for the molded auxiliary beams and the main beams of the cross-country chassis according to claim 1, wherein the lower end of the upper cover (33) and the upper end of the lower cover (34) are respectively provided with an arc-shaped surface (33 a), the arc-shaped surface (33 a) at the lower end of the upper cover (33) protrudes downwards, and the arc-shaped surface (33 a) at the upper end of the lower cover (34) protrudes upwards.
  5. 5. The shock-absorbing connecting mechanism for the forming auxiliary beam and the main beam of the cross-country chassis according to claim 4, wherein the upper cover (33) and the lower cover (34) are internally provided with metal frameworks (6), the two metal frameworks (6) are in a vortex shape, and the inner ends of the metal frameworks (6) are fixedly connected with the connecting rod (32).
  6. 6. The shock-absorbing connecting mechanism for the molded auxiliary beams and the main beams of the cross-country chassis according to claim 5, wherein two limiting tables (32 a) are arranged on the connecting rod (32), the diameter of each limiting table (32 a) is larger than that of the connecting rod (32), one limiting table (32 a) is arranged at the upper end of the connecting rod (32), the other limiting table (32 a) is arranged at the connecting position of the connecting rod (32) and the lower cover (34), the limiting table (32 a) at the upper end is embedded in the upper cover (33) and fixedly connected with the metal framework (6) in the upper cover (33), and the limiting table (32 a) at the lower side is embedded in the lower cover (34) and fixedly connected with the metal framework (6) in the lower cover (34).
  7. 7. The shock-absorbing connecting mechanism for the forming auxiliary beams and the main beams of the cross-country chassis according to claim 5, wherein two connecting grooves (31 c) are formed in inner side walls of the upper side and the lower side of the outer shell (31), a ply (7) is arranged on the side walls of the upper cover (33) and the lower cover (34), the ply (7) in the upper cover (33) is arranged on the upper side of the metal framework (6), the ply (7) in the lower cover (34) is arranged on the lower side of the metal framework (6), and the metal frameworks (6) in the upper cover (33) and the lower cover (34) and the ply (7) are respectively embedded in the two connecting grooves (31 c) of the upper side and the lower side.
  8. 8. The shock absorption connecting mechanism for the forming auxiliary beams and the main beams of the cross-country chassis according to claim 1, wherein at least 6 upper corner brackets (1) are fixedly connected to the forming auxiliary beams (9), and a plurality of the upper corner brackets (1) are arranged in bilateral symmetry.

Description

Shock absorption connecting mechanism for forming auxiliary beam and main beam of cross-country chassis Technical Field The invention relates to the technical field of auxiliary frames, in particular to a shock absorption connecting mechanism for a formed auxiliary beam and a main beam of an off-road chassis. Background In order to cope with complex and severe road conditions, the overhead living cabin body of the off-road motor home is usually arranged on a main beam of a chassis through an auxiliary beam, the traditional connecting mode adopts rigid elements such as angle brackets, U-shaped bolts or connecting steel plates, the auxiliary frame is directly locked on the main frame, the main frame and the auxiliary frame form an integral bearing structure, the rigid connection of the main frame and the auxiliary beam is firm in connection, but under the off-road working condition, the auxiliary frame can limit the free deformation of the main frame due to the fact that the rigidity is high when the main frame generates large bending or torsional deformation due to uneven road surfaces, huge stress concentration is generated at connecting points, the stress concentration between the main frame and the auxiliary beam is extremely easy to cause the cracking of the main frame longitudinal beam, or the stress is upwards transmitted to the auxiliary frame and the living cabin body, and the living cabin body structure is damaged. In order to solve the above problems, various flexible connection mechanisms have been developed in the prior art. For example, patent document CN223764542U discloses a four-point type stress-free auxiliary beam, which discloses a scheme that a rotation part is arranged at the front and rear ends of the auxiliary beam, and fixing parts including shock absorbing units are arranged at two sides, so that a certain relative torsion and vertical displacement are allowed to be generated between a main frame and an auxiliary frame, thereby releasing part of stress and improving the adaptability of a vehicle to off-road pavement. However, in the new energy off-road caravan, the new energy off-road caravan needs to be mounted with a power battery pack of a large capacity, and the power battery packs are generally arranged on both sides of the main frame or on the auxiliary frame, so that the auxiliary frame bears the load of the living cabin, also bears the concentrated mass brought by the battery packs and the dynamic inertia force generated by the concentrated mass, and places higher demands on the bearing capacity and the shock resistance of the connecting mechanism between the main beam and the auxiliary beam. The existing main and auxiliary frame connecting mechanism is mainly designed aiming at the traditional fuel chassis, focuses on solving the problem of releasing mechanical stress, and cannot effectively meet the special requirements of the new energy off-road caravan on the adaptation of the load of a large-mass battery. Therefore, it is necessary to invent a shock-absorbing connecting mechanism between a forming auxiliary beam and a main beam, which is specially used for a new energy off-road motor home, and on the basis of realizing flexible connection, special requirements of high-quality battery load adaptation are comprehensively considered. Disclosure of Invention The invention aims to provide a shock absorption connecting mechanism for a formed auxiliary beam and a main beam of an off-road chassis, which aims to solve the problem that the existing main and auxiliary frame connecting mechanism mainly aims at the traditional fuel chassis design and aims at solving the problem of releasing mechanical stress, but cannot effectively meet the requirement of a new energy off-road motor home on high-quality battery load adaptation. In order to achieve the above purpose, the present invention provides the following technical solutions: The utility model provides a shock attenuation coupling mechanism for cross country chassis's shaping auxiliary girder and girder, includes angle sign indicating number and lower angle sign indicating number, angle sign indicating number and shaping auxiliary girder fixed connection, be equipped with connection module on the angle sign indicating number down, connection module includes shell and connecting rod, shell fixed connection is on the angle sign indicating number, the upper and lower both ends of shell are provided with upper cover, lower cover respectively, upper cover and lower cover are made by elastic material, just upper cover and lower cover seal the upper and lower both ends of shell, the connecting rod sets up with the shell is coaxial, just connecting rod upper end and upper cover fixed connection, lower cover and the lateral wall fixed connection of connecting rod, the lower extreme of connecting rod extends to the downside of angle sign indicating number down, lower angle sign indicating number and connecting rod fixed connection, interv