A type of suspension-type automotive engine shock absorber

Abstract

This utility model relates to the field of automotive shock absorber technology, specifically a suspension-type automotive engine shock absorber. It includes an engine body, a mounting plate bolted to the bottom of the engine body, and a shock-absorbing device fixedly mounted on the bottom wall of the mounting plate. The shock-absorbing device includes a U-shaped support frame, with the bottom wall of a shock-absorbing airbag fixedly mounted in the middle of the U-shaped support frame. The top wall of the shock-absorbing airbag is fixedly mounted to the bottom wall of the mounting plate. One end of each shock-absorbing spring is fixedly mounted on both sides of the bottom wall of the U-shaped support frame. A support column is fixedly inserted between fixed seats, and a connecting plate is sleeved on the middle of the support column. The ends of the connecting plate and the rectangular frame are suspended from the mounting wheel. A damper is fixedly mounted on one side of the U-shaped support frame. This utility model, through the synergistic design of a multi-stage shock-absorbing structure and a rigid guide frame, achieves efficient isolation of engine vibration and ensures structural stability, while also considering dynamic load adaptability and ease of installation and maintenance.

Description

Technical Field

[0001] This utility model relates to the field of automotive shock absorber technology, and in particular to a suspension-type automotive engine shock absorber. Background Technology

[0002] As the power source of a car, the engine burns industrial oil to generate high pressure, which drives the crankshaft to rotate and output power. Since there are several different working states in a working cycle, the engine inevitably experiences strong vibrations. Engine vibration is extremely detrimental to the operation of mechanical parts inside the car, especially causing damage to the parts. Its vibration shortens the service life of the corresponding parts, weakens their reliability, causes different kinds of damage to some large components, and ultimately affects the service life of the entire car.

[0003] An existing patent publication number CN219529686U discloses a suspension-type automotive engine shock absorber, comprising a main body, with an internal control circuit board electrically connected to the main body. An engine mounting block is bolted to the top of the main body, and several sliding rods are bolted to the bottom of the engine mounting block, with the bottom of the sliding rods slidably connected to the main body. A detection block is welded to the bottom of the engine mounting block, and an acceleration detector is bolted to the bottom of the detection block. A fixed chamber is welded inside the main body, and several electrorheological fluids are installed inside the fixed chamber. Power supply devices are welded to both sides of the main body. Preload bolts are bolted to the outer surface of the main body, with the tops of the preload bolts connected to the engine mounting block.

[0004] However, in this scheme, the sliding rod slides inside the main body of the equipment, and the rotation of the first rotating shaft drives the rotating block to rotate in the electrorheological fluid. These components will wear out during long-term use. The wear of the sliding rod may cause it to slide poorly with the main body of the equipment, affecting the normal operation of the damping spring. The wear of the first rotating shaft and the rotating block will change their interaction with the electrorheological fluid, thereby affecting the magnitude of the braking force and reducing the damping effect. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing the following technical solution:

[0006] A suspension-type automotive engine shock absorber includes an engine body and mounting wheels installed on both sides of the engine body. A mounting plate is bolted to the bottom of the engine body. A shock-absorbing device is fixedly mounted on the bottom wall of the mounting plate. The shock-absorbing device includes a U-shaped support frame, a shock-absorbing airbag, a shock-absorbing spring, a fixed seat, a rectangular frame, a support column, a connecting plate, and a damper. The two sides of the U-shaped support frame are fixedly mounted to the bottom wall of the mounting plate. The bottom wall of the shock-absorbing airbag is fixedly mounted in the middle of the U-shaped support frame. The top wall of the shock-absorbing airbag is fixedly mounted to the bottom wall of the mounting plate. One end of each shock-absorbing spring is fixedly mounted to both sides of the bottom wall of the U-shaped support frame. The upper surfaces of both sides of the fixed seat are fixedly mounted to the other ends of the shock-absorbing springs. The rectangular frame is bolted to the bottom wall of the fixed seat. The support column is fixedly inserted between the fixed seats. The connecting plate is sleeved on the middle of the support column. The ends of the connecting plate and the rectangular frame are suspended from the mounting wheels. The damper is fixedly mounted on one side of the U-shaped support frame.

[0007] As an improvement to the above technical solution, the two ends of the U-shaped support frame are square support frames, and there are four sets of square support frames. The square support frames are bolted to the bottom wall of the mounting plate. A circular mounting seat is fixedly installed on the top of the shock-absorbing airbag, and the circular mounting seat is bolted to the bottom wall of the mounting plate.

[0008] As an improvement to the above technical solution, the upper and lower ends of the damping spring are fixedly mounted with mounting bases, and a small coil spring is fixedly mounted in the middle of the mounting base, with the small coil spring located inside the mounting base.

[0009] As an improvement to the above technical solution, a first suspension column is fixedly installed at the end of the rectangular frame, and a second suspension column is fixedly installed at the end of the connecting plate. Both the first suspension column and the second suspension column are fixedly installed with the mounting wheel.

[0010] As an improvement to the above technical solution, the middle part of the U-shaped support frame is a flat plate, and the vibration damping airbags are in two sets, which are fixedly installed on both sides of the middle part of the U-shaped support frame.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model uses a vibration-damping airbag fixed between the middle of a U-shaped support frame and the bottom wall of a mounting plate. The compressibility of the gas absorbs high-frequency vibrations. Two ends of the vibration-damping spring are connected to the bottom wall of the U-shaped support frame and the upper surfaces of both sides of the fixed seat, respectively, absorbing low-frequency vibrations through elastic deformation. A damper is fixed to one side of the U-shaped support frame, using hydraulic oil flow resistance to dissipate residual vibration energy and suppress spring rebound oscillations. The U-shaped support frame uses high-strength steel to distribute the engine weight to the vibration-damping airbag and spring. A support column penetrates the fixed seat, and a connecting plate is fitted in the middle, restricting the engine to move only in the vertical direction and preventing lateral deviation. The connecting plate and the ends of the rectangular frame together suspend mounting wheels, forming a rigid frame to resist engine torsional vibrations. The rectangular frame is bolted to the bottom wall of the fixed seat, working in conjunction with the connecting plate to transmit engine vibrations to the mounting wheels while providing structural support to prevent deformation of the vibration-damping device. Through the coordinated design of a multi-stage vibration-damping structure and a rigid guide frame, efficient isolation of engine vibrations and structural stability are achieved, while also considering dynamic load adaptability and ease of installation and maintenance. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the present invention;

[0014] Figure 2 This is a structural diagram of the vibration reduction device of this utility model;

[0015] Figure 3 This is a structural diagram of the connecting plate of this utility model;

[0016] Figure 4 This is a structural diagram of the vibration-damping airbag of this utility model.

[0017] Reference numerals: 1. Engine body; 11. Mounting plate; 2. Mounting wheel; 3. Vibration damping device; 31. U-shaped support frame; 311. Square support frame; 32. Vibration damping airbag; 321. Circular mounting seat; 33. Vibration damping spring; 331. Mounting seat; 332. Small coil spring; 34. Fixed seat; 35. Rectangular frame; 351. First suspension column; 36. Support column; 37. Connecting plate; 371. Second suspension column; 38. Damper. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.

[0019] Please see Figure 1-4 This utility model provides a technical solution:

[0020] A suspension-type automotive engine shock absorber includes an engine body 1 and mounting wheels 2 installed on both sides of the engine body 1. A mounting plate 11 is bolted to the bottom of the engine body 1. A shock-absorbing device 3 is fixedly installed on the bottom wall of the mounting plate 11. The shock-absorbing device 3 includes a U-shaped support frame 31, a shock-absorbing airbag 32, a shock-absorbing spring 33, a mounting base 34, a rectangular frame 35, a support column 36, a connecting plate 37, and a damper 38. The two sides of the U-shaped support frame 31 are fixedly installed to the bottom wall of the mounting plate 11, and the bottom wall of the shock-absorbing airbag 32 is fixedly installed on the U-shaped support frame 31. In the middle, the top wall of the shock-absorbing airbag 32 is fixedly installed to the bottom wall of the mounting plate 11. One end of the shock-absorbing spring 33 is fixedly installed on both sides of the bottom wall of the U-shaped support frame 31. The upper surfaces of both sides of the fixed seat 34 are fixedly installed to the other end of the shock-absorbing spring 33. The rectangular frame 35 is bolted to the bottom wall of the fixed seat 34. The support column 36 is fixedly inserted between the fixed seats 34. The connecting plate 37 is sleeved and installed in the middle of the support column 36. The end of the connecting plate 37 and the end of the rectangular frame 35 are suspended and installed with the mounting wheel 2. The damper 38 is fixedly installed on one side of the U-shaped support frame 31.

[0021] In this embodiment, the damping airbag 32 is fixed between the middle of the U-shaped support frame 31 and the bottom wall of the mounting plate 11, absorbing high-frequency vibrations through the compressibility of gas. The two ends of the damping spring 33 are respectively connected to the bottom wall of the U-shaped support frame 31 and the upper surfaces of both sides of the fixed seat 34, absorbing low-frequency vibrations through elastic deformation. The damper 38 is fixed to one side of the U-shaped support frame 31, consuming residual vibration energy through the flow resistance of hydraulic oil and suppressing spring rebound oscillation. The U-shaped support frame 31 is made of high-strength steel to distribute the engine weight to the damping airbag 32 and the damping spring 33. The bottom of the U-shape is thickened to 10mm to resist concentrated spring loads and avoid local deformation. The support column 36 penetrates the fixed seat 34, and the connecting plate 37 is sleeved in the middle to restrict the engine to move only in the vertical direction and prevent lateral movement. The connecting plate 37 and the end of the rectangular frame 35 are jointly suspended by the mounting wheel 2 to form a rigid frame to resist the torsional vibration of the engine. The rectangular frame 35 is bolted to the bottom wall of the fixed seat 34 and works with the connecting plate 37 to transmit the engine vibration to the mounting wheel 2, while providing structural support to prevent the vibration damping device 3 from deforming. The vibration transmission path is: engine vibration → mounting plate 11 → damping airbag 32 (high frequency) → damping spring 33 (low frequency) → damper 38 (residual vibration) → fixed seat 34 → mounting wheel 2 → vehicle body. This suspension-type automotive engine vibration damper achieves efficient isolation of engine vibration and structural stability through the coordinated design of multi-stage vibration damping structure and rigid guide frame, while also taking into account dynamic load adaptability and ease of installation and maintenance.

[0022] Specifically, the two ends of the U-shaped support frame 31 are square support frames 311, and there are four sets of square support frames 311. The square support frames 311 are bolted to the bottom wall of the mounting plate 11. The top of the shock-absorbing airbag 32 is fixedly installed with a circular mounting seat 321, which is bolted to the bottom wall of the mounting plate 11.

[0023] In this embodiment, four sets of square support frames 311 are located at both ends of the U-shaped support frame 31, with two sets at each end of each set, forming a symmetrical four-point support structure. This expands the engine weight support from the traditional two-point support to four-point support, reducing local stress concentration. The four-point support structure can resist engine torsional vibration and improve structural stability. It is made of Q345B high-strength steel and is integrally formed with the U-shaped body to avoid welding defects. The square support frames 311 are connected to the bottom wall of the mounting plate 11 by M12 high-strength bolts. The top of the circular mounting base 321 is vulcanized and bonded to the shock-absorbing airbag 32, and the bottom is connected to the bottom wall of the mounting plate 11 by M10 bolts. The circular design makes the airbag pressure evenly distributed to the mounting plate 11, avoiding local stress concentration and extending the airbag life.

[0024] Specifically, the upper and lower ends of the damping spring 33 are fixedly mounted with mounting bases 331, and a small coil spring 332 is fixedly mounted in the middle of the mounting base 331. The small coil spring 332 is located inside the mounting base 331.

[0025] In this embodiment, the main spring damping spring 33 is made of 55CrSi spring steel with 8 effective coils, and the small coil spring 332 has 4 effective coils. The small coil spring 332 is nested inside the mounting seats 331 at both ends of the main spring and is connected in series with the main spring. This suspension-type automotive engine shock absorber achieves vibration damping characteristics through the composite structure design of the damping spring 33 and the nested layout of the main spring and the small coil spring 332.

[0026] Specifically, a first suspension column 351 is fixedly installed at the end of the rectangular frame 35, and a second suspension column 371 is fixedly installed at the end of the connecting plate 37. Both the first suspension column 351 and the second suspension column 371 are fixedly installed with the mounting wheel 2.

[0027] In this embodiment, the dual suspension column layout of the rectangular frame 35 and the connecting plate 37, and the coordinated fixing of the first suspension column 351 and the second suspension column 371, achieve multi-directional load transfer, structural stability enhancement and vibration isolation optimization.

[0028] Specifically, the middle part of the U-shaped support frame 31 is a flat plate, and there are two sets of shock-absorbing airbags 32, which are fixedly installed on both sides of the middle part of the U-shaped support frame 31.

[0029] In this embodiment, the U-shaped support frame 31 is a geometric structure, and two sets of airbags are fixed on the left and right sides of the central plate of the U-shaped support frame 31 to form anti-tilting stiffness.

[0030] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A suspension-type automotive engine shock absorber, comprising an engine body (1) and mounting wheels (2) mounted on both sides of the engine body (1), characterized in that: A mounting plate (11) is bolted to the bottom of the engine body (1). A vibration damping device (3) is fixedly mounted on the bottom wall of the mounting plate (11). The vibration damping device (3) includes a U-shaped support frame (31), a vibration damping airbag (32), a vibration damping spring (33), a fixing seat (34), a rectangular frame (35), a support column (36), a connecting plate (37), and a damper (38). The two sides of the U-shaped support frame (31) are fixedly mounted to the bottom wall of the mounting plate (11). The bottom wall of the vibration damping airbag (32) is fixedly mounted in the middle of the U-shaped support frame (31). The top wall of the vibration damping airbag (32) is connected to the mounting plate (11). The bottom wall is fixedly installed, one end of the damping spring (33) is fixedly installed on both sides of the bottom wall of the U-shaped support frame (31), the upper surfaces of both sides of the fixed seat (34) are fixedly installed with the other end of the damping spring (33), the rectangular frame (35) is bolted to the bottom wall of the fixed seat (34), the support column (36) is fixedly inserted between the fixed seats (34), the connecting plate (37) is sleeved and installed in the middle of the support column (36), the end of the connecting plate (37) and the end of the rectangular frame (35) are suspended and installed with the mounting wheel (2), and the damper (38) is fixedly installed on one side of the U-shaped support frame (31).

2. A suspension-type automotive engine shock absorber according to claim 1, characterized in that: The two ends of the U-shaped support frame (31) are square support frames (311), and there are four sets of square support frames (311). The square support frames (311) are bolted to the bottom wall of the mounting plate (11). The top of the shock-absorbing airbag (32) is fixedly installed with a circular mounting seat (321), and the circular mounting seat (321) is bolted to the bottom wall of the mounting plate (11).

3. A suspension-type automotive engine shock absorber according to claim 1, characterized in that: The damping spring (33) is fixedly mounted with mounting bases (331) at both the upper and lower ends. A small coil spring (332) is fixedly mounted in the middle of the mounting base (331). The small coil spring (332) is located inside the mounting base (331).

4. A suspension-type automotive engine shock absorber according to claim 1, characterized in that: The first suspension column (351) is fixedly installed at the end of the rectangular frame (35), and the second suspension column (371) is fixedly installed at the end of the connecting plate (37). Both the first suspension column (351) and the second suspension column (371) are fixedly installed with the mounting wheel (2).

5. A suspension-type automotive engine shock absorber according to claim 1, characterized in that: The middle part of the U-shaped support frame (31) is a flat plate, and there are two sets of shock-absorbing airbags (32). The shock-absorbing airbags (32) are fixedly installed on both sides of the middle part of the U-shaped support frame (31).

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