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CN-122008846-A - Auxiliary suspension device for gearbox and installation method thereof

CN122008846ACN 122008846 ACN122008846 ACN 122008846ACN-122008846-A

Abstract

The invention belongs to the technical field of gearbox suspension, and particularly relates to an auxiliary suspension device for a gearbox and an installation method thereof; the auxiliary suspension device for the gearbox comprises a frame plate and a fixed support assembly, wherein the fixed support assembly is arranged on the frame plate, a connecting structure is arranged on the fixed support assembly, the gearbox is arranged on the connecting structure, and an elastic buffer structure is arranged on the fixed support assembly; the first vulcanized body 5 and the second vulcanized body 6 are assembled together with the first vulcanized rubber and the second vulcanized rubber, and the pre-set pre-pressing design after the plate spring beam is in butt joint with the middle support is combined to form a flexible buffer structure, so that vibration impact generated by operation of the gearbox and road surface jolting can be weakened, abnormal sound generated by rigid contact of metal parts can be eliminated, and each part is protected from damage.

Inventors

  • LIU XINGZHENG
  • LI PENGCHAO
  • SUN XINYUAN
  • WANG YUNYI
  • SHA KAIQIN
  • SHANG YANCHUN

Assignees

  • 集瑞联合重工有限公司

Dates

Publication Date
20260512
Application Date
20260309

Claims (10)

  1. 1. The utility model provides a gearbox auxiliary suspension device, its characterized in that, includes carriage board (1) and fixed support subassembly (2), fixed support subassembly (2) set up on carriage board (1), be provided with connection structure (3) on fixed support subassembly (2), the gearbox sets up on connection structure (3), be provided with elastic buffer structure (4) on fixed support subassembly (2).
  2. 2. The auxiliary suspension device for gearboxes according to claim 1, wherein the fixed support assembly (2) comprises a frame side bracket (21) and a plate spring beam (23), the frame side bracket (21) is arranged on the frame plates (1) on two sides of the automobile, an intermediate bracket (22) is arranged on the frame side bracket (21), and the plate spring beam (23) is connected with the intermediate bracket (22).
  3. 3. The auxiliary suspension device for gearboxes according to claim 2, wherein the elastic buffer structure (4) comprises a first vulcanized rubber (401) and a second vulcanized rubber (402), the first vulcanized rubber (401) and the second vulcanized rubber (402) are vulcanized on the upper side and the lower side of the end portion of the plate spring beam (23), and the first vulcanized rubber (401) and the second vulcanized rubber (402) are abutted against the middle bracket (22).
  4. 4. A gearbox auxiliary suspension device according to claim 3, characterised in that the connection structure (3) comprises a bracket plate (301) in the shape of a figure, the bracket plate (301) being connected to the leaf spring beam (23), the bracket plate (301) being connected to the gearbox.
  5. 5. A transmission auxiliary suspension device according to claim 3, wherein the first vulcanized rubber (401) is sleeved with a first vulcanized body (5), the second vulcanized rubber (402) is sleeved with a second vulcanized body (6), and the first vulcanized body (5) and the second vulcanized body (6) are connected with a plate spring beam (23) through bolts.
  6. 6. The auxiliary suspension device for a gearbox according to claim 5, wherein the intermediate bracket (22) comprises a first fixing plate (221), two ends of the first fixing plate (221) are connected with folded plates (222), the folded plates (222) are connected with abutting plates (223), and the distance between the abutting plates (223) and the first fixing plate (221) is smaller than 1mm of the height of the first vulcanized body (5) or the second vulcanized body (6) per se.
  7. 7. The auxiliary suspension device for a gearbox according to any one of claims 2 to 6, wherein the frame side bracket (21) comprises a U-shaped plate (211), the bottom of the U-shaped plate (211) is connected with the frame plate (1) through bolts, strip holes (212) are formed in two ends of the U-shaped plate (211), and the U-shaped plate (211) is connected with the middle bracket (22) through the strip holes (212) through bolts.
  8. 8. The auxiliary suspension device for the gearbox of claim 4, wherein the bracket plate (301) is connected with the plate spring beam (23) through bolts, a round rubber cushion (7) is arranged between the plate spring beam (23) and the bolts, X-direction limiting rubber (8) is arranged at the end part of the plate spring beam (23), U-shaped buffer grooves (9) are formed in the second vulcanized rubber (402) and the second vulcanized body (6), and a baffle plate (101) is arranged on the frame plate (1).
  9. 9. The auxiliary suspension device for a gearbox according to claim 2, wherein the leaf spring beam (23) comprises a middle part (231), a transition part (232) and a connecting part (233), and both ends of the transition part (232) are provided with arc structures.
  10. 10. A method of installing a gearbox auxiliary suspension according to any one of claims 1 to 9, comprising the steps of: Step 101, connecting the middle bracket (22) with the frame side bracket (21), sleeving a first vulcanized body (5) on the first vulcanized rubber (401), sleeving a second vulcanized body (6) on the second vulcanized rubber (402), and fixing the first vulcanized body (5) and the second vulcanized body (6) with the plate spring beam (23); Step 102, butting the plate spring beam (23) with the middle bracket (22), butting the end part of the plate spring beam (23) with the butting plate (223) of the middle bracket (22), butting the first vulcanized body (5) and the second vulcanized body (6) with the middle bracket (22), and connecting the frame side bracket (21) with the frame plate (1); Step 103, connecting the bracket plate (301) with the plate spring beam (23) through bolts, arranging a round rubber cushion (7) between the plate spring beam (23) and the bolts, and fixedly connecting the bracket plate (301) with the gearbox to complete the connection between the gearbox and the fixed support assembly (2).

Description

Auxiliary suspension device for gearbox and installation method thereof Technical Field The invention belongs to the technical field of gearbox suspension, and particularly relates to an auxiliary suspension device for a gearbox and an installation method thereof. Background In heavy truck arrangement, the auxiliary suspension is used for meeting the requirement of ensuring the maximum limit value of the bending moment of the rear end face of the engine cylinder body and the mounting face of the gearbox under the complex working condition, and limiting the displacement of the output end of the gearbox when the torque changes. The auxiliary suspension of the traditional commercial vehicle gearbox adopts a rigid support or a simple rubber pad structure, has low assembly precision, has difficult absorption of assembly errors and poor vibration isolation effect, easily generates abnormal sound under complex working conditions, has poor vibration absorption effect, and does not meet the comfort requirement of the whole vehicle. Under the working conditions of jolt, load and unload, phenomena such as large displacement, loose connection and the like easily occur, and the working stability of the gearbox and the NVH performance of the whole vehicle are affected. Accordingly, there is a need for an adjustably mounted, flexibly cushioned auxiliary suspension for a transmission. Disclosure of Invention The present invention has been made to solve the above problems, and an object of the present invention is to provide a transmission auxiliary suspension device with adjustable mounting height and flexible damping, and a mounting method thereof, and to achieve the above objects, the present invention adopts the following technical scheme: the utility model provides a gearbox auxiliary suspension device, includes carriage plate and fixed support subassembly, fixed support subassembly sets up on the carriage plate, be provided with connection structure on the fixed support subassembly, the gearbox sets up on connection structure, be provided with elastic buffer structure on the fixed support subassembly. The fixed support assembly comprises a frame side bracket and a plate spring beam, wherein the frame side bracket is arranged on frame plates on two sides of an automobile, an intermediate bracket is arranged on the frame side bracket, and the plate spring beam is connected with the intermediate bracket. The elastic buffer structure comprises first vulcanized rubber and second vulcanized rubber, the first vulcanized rubber and the second vulcanized rubber are vulcanized on the upper side and the lower side of the end part of the plate spring beam respectively, and the first vulcanized rubber and the second vulcanized rubber are propped against the middle support. The connecting structure comprises a bracket plate in a shape like a Chinese character 'ji', the bracket plate is connected with the plate spring beam, and the bracket plate in a shape like a Chinese character 'ji' is connected with the gearbox. The first vulcanized rubber is sleeved with a first vulcanized body, the second vulcanized rubber is sleeved with a second vulcanized body, and the first vulcanized body and the second vulcanized body are connected with the plate spring beam through bolts. The middle support comprises a first fixing plate, two ends of the first fixing plate are connected with folded plates, abutting plates are connected to the folded plates, and the distance between the abutting plates and the first fixing plate is smaller than 1mm of the height of the first vulcanizing body or the second vulcanizing body. The frame side support comprises a U-shaped plate, the bottom of the U-shaped plate is connected with the frame plate through bolts, strip holes are formed in the two ends of the U-shaped plate, and the U-shaped plate is connected with the middle support through the strip holes through bolts. The bracket plate is connected with the plate spring beam through bolts, a round rubber cushion is arranged between the plate spring beam and the bolts, X-direction limiting rubber is arranged at the end part of the plate spring beam, U-shaped buffer grooves are formed in the second vulcanized rubber and the second vulcanized body, and baffles are arranged on the truck frame plates. The leaf spring roof beam includes intermediate part, transition portion and connecting portion, transition portion both ends all are provided with the arc structure. A method of installing a gearbox auxiliary suspension device comprising the steps of: step 101, connecting the middle bracket with a bracket at the side of the frame, sleeving a first vulcanized body on the first vulcanized rubber, sleeving a second vulcanized body on the second vulcanized rubber, and fixing the first vulcanized body and the second vulcanized body with the plate spring beam; 102, butting the plate spring beam with the middle bracket, butting the end part of the plate spring beam with a bu