Damping device for engine power pack

Abstract

The utility model discloses a damping device for an engine power pack, which belongs to the technical field of engine damping and comprises a base, a movable bottom plate is slidably connected in the base, a first pressing plate is positioned in an air reservoir, the air reservoir is filled with air, and the outer side of the air reservoir is communicated with an air delivery pipe. Second springs are fixedly connected to the top of the second pressing plate and in the gas collection box, and a reinforcing groove is formed in the center of the bottom of the base and is of a trapezoidal structure. The movable bottom plate downwards extrudes the damping plate through the first protruding blocks on the two sides, the first spring at the top of the fixed plate is compressed, vibration energy is converted into elastic potential energy of the spring, meanwhile, the pressing rod at the bottom of the damping plate pushes the first pressing plate, gas in the gas storage cylinder is compressed, and the gas enters the gas collecting box through the gas conveying pipe; the second pressing plate is pushed to compress the second spring, double buffering is formed, vibration energy is further absorbed, the elastic force of the first spring and the second spring pushes all parts to reset, and damping circulation in the vertical direction is completed.

Description

Technical Field

[0001] This utility model belongs to the field of engine vibration reduction technology, specifically a vibration reduction device for engine power packs. Background Technology

[0002] During the transportation and use of the engine power pack, the shock absorption device plays a crucial role. As a complex and precise system, the engine power pack contains multiple key components such as the engine, transmission components, and control system. These components will generate vibrations during operation, and will also be subject to vibrations and impacts caused by factors such as road bumps, vehicle starting and braking during transportation.

[0003] Currently, the most common engine power pack shock absorption devices on the market are mainly of the following types:

[0004] Rubber vibration damping pads: This is a relatively traditional and widely used vibration damping method. Rubber vibration damping pads are installed between the engine power pack and the supporting structure, utilizing the elasticity of rubber to absorb and buffer vibration energy. Rubber vibration damping pads have a certain degree of flexibility and elastic modulus, which can reduce the transmission of vibrations to some extent.

[0005] Spring damping device: Using springs as the main damping element, springs can provide a large amount of elastic deformation and can withstand a certain amount of weight and impact. Spring damping devices usually have good vertical damping effect and are used in some occasions with high damping requirements.

[0006] However, some spring damping devices currently have a specific natural frequency. When the external vibration frequency is close to the natural frequency of the spring, resonance is likely to occur. Resonance will cause the vibration amplitude to increase sharply, which will not only fail to dampen the vibration, but will also aggravate the vibration of the engine power pack. Utility Model Content

[0007] To overcome the above-mentioned defects, this utility model provides a vibration damping device for engine power packs, which solves the problem that some current spring vibration damping devices have a specific natural frequency. When the external vibration frequency is close to the natural frequency of the spring, resonance is likely to occur. Resonance will cause the vibration amplitude to increase sharply, which not only fails to play a damping role, but also aggravates the vibration of the engine power pack.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a shock-absorbing device for an engine power pack, comprising a base, a movable base plate slidably connected within the base, an engine power pack integrated at the top of the movable base plate, first protrusions fixedly connected to both sides of the movable base plate in a symmetrical structure, second protrusions fixedly connected to the bottom of the movable base plate in a symmetrical structure, fixing plates installed on both sides inside the base, multiple sets of first springs fixedly installed at the top of the fixing plates, shock-absorbing plates connected to the ends of the first springs, and multiple sets of pressure rods fixedly connected to the bottom of the shock-absorbing plates. A first pressure plate is provided at the bottom of the rod. The shock-absorbing plate contacts the bottom of the first protrusion. Multiple sets of air storage cylinders are installed inside the fixing plate to cooperate with the pressure rod and the first pressure plate. The first pressure plate is located inside the air storage cylinder. The air storage cylinder is filled with gas, and a gas supply pipe is connected to the outside of the air storage cylinder. The other end of the gas supply pipe is connected to a gas collection box. A second pressure plate is slidably connected inside the gas collection box. A second spring is fixedly connected to the top of the second pressure plate and inside the gas collection box. A reinforcing groove is provided at the center of the bottom of the base. The reinforcing groove has a trapezoidal structure.

[0009] As a further embodiment of this utility model: the base has a second sliding groove on both sides for use with the first protrusion, and the base has a first sliding groove at the bottom for use with the second protrusion.

[0010] As a further embodiment of this utility model: rubber pads are fixedly installed on both sides of the base in a symmetrical structure, and the rubber pads are located on the top of the first protrusion.

[0011] As a further embodiment of this utility model: the base is provided with side plates on both sides, and the side plates are provided with multiple sets of slots.

[0012] As a further embodiment of this utility model: the bottom of the base is provided with an installation groove for use with the air storage cylinder, the air supply pipe and the air collection box, and the inner sides of the base are provided with slots for use with the shock absorption plate, the first spring and the fixing plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The movable base plate presses down on the damping plate through the first protrusions on both sides, compressing the first spring at the top of the fixed plate and converting the vibration energy into the elastic potential energy of the spring. At the same time, the pressure rod at the bottom of the damping plate pushes the first pressure plate, compressing the gas in the gas storage cylinder. The gas enters the gas collection box through the gas delivery pipe, pushing the second pressure plate to compress the second spring, forming a double buffer to further absorb the vibration energy. When the vibration weakens, the elastic force of the first and second springs pushes each component to reset, completing the vertical damping cycle.

[0015] 2. For horizontal vibrations, the movable base plate slides in the first groove of the base via the second protrusion at the bottom, while the first protrusions on both sides move laterally in the second groove. When the first protrusions collide with the rubber pads on the inside of the side plate due to horizontal vibration, the elastic deformation of the rubber absorbs the horizontal impact energy, preventing the movable base plate from rigidly colliding with the base. At the same time, the viscoelastic properties of the rubber can dissipate some of the vibration energy, reducing the intensity of horizontal vibration transmitted to the power pack. Attached Figure Description

[0016] Figure 1 This is a first-view schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a second-view schematic diagram of the overall structure of this utility model;

[0018] Figure 3 This is a first-view schematic diagram of the disassembled structure of this utility model;

[0019] Figure 4 This is a second-view schematic diagram of the disassembled structure of this utility model;

[0020] Figure 5 This is a schematic diagram showing the cross-sectional effect of the main structure of this utility model.

[0021] In the diagram: 1. Base; 2. Side plate; 3. Slot; 4. Movable base plate; 5. First protrusion; 6. Second protrusion; 7. Rubber pad; 8. First slide groove; 9. Fixing plate; 10. Shock-absorbing plate; 11. First spring; 12. Reinforcing groove; 13. Mounting groove; 14. Air storage cylinder; 15. Air supply pipe; 16. Air collection box; 17. Second slide groove; 18. Slot; 19. Pressure rod; 20. First pressure plate; 21. Second pressure plate; 22. Second spring. Detailed Implementation

[0022] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0023] like Figures 1-5 As shown, this utility model provides a technical solution:

[0024] A shock-absorbing device for an engine power pack includes a base 1, a movable base plate 4 slidably connected inside the base 1, an engine power pack integrated on the top of the movable base plate 4, first protrusions 5 fixedly connected symmetrically on both sides of the movable base plate 4, second protrusions 6 fixedly connected symmetrically on the bottom of the movable base plate 4, fixing plates 9 installed on both sides inside the base 1, multiple sets of first springs 11 fixedly installed on the top of the fixing plates 9, shock-absorbing plates 10 connected to the ends of the first springs 11, multiple sets of pressure rods 19 fixedly connected to the bottom of the shock-absorbing plates 10, and a first pressure plate 20 provided at the bottom end of the pressure rods 19. The vibrating plate 10 contacts the bottom of the first protrusion 5. Multiple sets of air storage cylinders 14 are installed in the fixing plate 9 to cooperate with the pressure rod 19 and the first pressure plate 20. The first pressure plate 20 is located in the air storage cylinder 14. The air storage cylinder 14 is filled with gas, and the outside of the air storage cylinder 14 is connected to the gas supply pipe 15. The other end of the gas supply pipe 15 is connected to the gas collection box 16. The second pressure plate 21 is slidably connected in the gas collection box 16. The top of the second pressure plate 21 is fixedly connected to the gas collection box 16 with the second spring 22. A reinforcing groove 12 is opened at the center of the bottom of the base 1. The reinforcing groove 12 has a trapezoidal structure.

[0025] Specifically, the engine power pack is integrated on the top of the movable base plate 4. The movable base plate 4 contacts the shock absorber 10 through the first protrusions 5 on both sides, and the second protrusion 6 at the bottom is in the corresponding position. The first spring 11 is in a certain pre-compression state, providing support for the shock absorber 10. The air reservoir 14 is filled with gas, and the second spring 22 is also in a certain initial state. When the engine power pack is subjected to vertical vibration during transportation, the movable base plate 4 will move up and down accordingly. If the movable base plate 4 moves downward, the first protrusions 5 will apply pressure to the shock absorber 10, causing the shock absorber 10 to compress the first spring 11 downward. At the same time, the pressure rod 19 at the bottom of the shock absorber 10 pushes the first pressure plate 20 against the air reservoir 14. The first spring 11, the gas in the gas storage cylinder 14, and the compressed gas enter the gas collection box 16 through the gas delivery pipe 15, pushing the second pressure plate 21 to move upward and compressing the second spring 22. During this process, the first spring 11, the gas in the gas storage cylinder 14, and the second spring 22 all play the role of absorbing and buffering vibration energy. When the movable base plate 4 moves upward, each component returns to its initial state under the elastic force of the spring, completing one shock absorption cycle. The trapezoidal reinforcing groove 12 opened at the center of the bottom of the base 1 can enhance the structural strength of the base 1. When subjected to vibration, the reinforcing groove 12 can disperse and transmit stress, reduce the deformation of the base 1, and further ensure the stability of the entire shock absorption device.

[0026] The base 1 has a second sliding groove 17 on both sides inside the base 1 to cooperate with the first protrusion 5, and a first sliding groove 8 on the bottom inside the base 1 to cooperate with the second protrusion 6. Rubber pads 7 are fixedly installed on both sides of the base 1 in a symmetrical structure, and the rubber pads 7 are located on the top of the first protrusion 5.

[0027] Specifically, the first slide groove 8 and the second slide groove 17 are designed to allow the movable bottom to be flexibly connected and fixed to the base 1 to achieve better shock absorption in conjunction with the engine power pack. When the movable base plate 4 is displaced due to vibration, the first protrusion 5 will hit the rubber pad 7. The elastic deformation of the rubber can absorb the impact energy in the horizontal direction and avoid structural damage caused by rigid collision.

[0028] The base 1 has side plates 2 on both sides, and multiple sets of slots 3 are provided on the side plates 2. The bottom of the base 1 has an installation slot 13 for use with the air storage cylinder 14, the air supply pipe 15, and the air collection box 16. The base 1 has slots 18 on both sides for use with the shock absorption plate 10, the first spring 11, and the fixing plate 9.

[0029] Specifically, the side plate 2 can enhance the overall structural strength and stability of the base 1, enabling the base 1 to better bear the weight of the engine power pack. The slot 3 is designed to facilitate further connection and positioning of the engine power pack with the movable base plate 4. The mounting slot 13 makes the installation and disassembly of the air tank 14, air pipe 15 and air collection box 16 more convenient.

[0030] The working principle of this utility model is as follows:

[0031] First, when the engine power pack is subjected to vertical vibration during transportation along with the movable base plate 4, the movable base plate 4 presses down on the shock-absorbing plate 10 through the first protrusions 5 on both sides, compressing the first spring 11 at the top of the fixed plate 9, converting the vibration energy into the elastic potential energy of the spring. At the same time, the pressure rod 19 at the bottom of the shock-absorbing plate 10 pushes the first pressure plate 20, compressing the gas in the air storage cylinder 14. The gas enters the air collection box 16 through the air supply pipe 15, pushing the second pressure plate 21 to compress the second spring 22, forming a double buffer to further absorb the vibration energy. When the vibration weakens, the elastic force of the first spring 11 and the second spring 22 pushes each component to reset, completing the vertical shock absorption cycle.

[0032] Secondly, regarding horizontal vibration, the movable base plate 4 slides in the first groove 8 of the base 1 via the second protrusion 6 at the bottom, while the first protrusions 5 on both sides move laterally in the second groove 17. When the first protrusion 5 impacts the rubber pad 7 on the inner side of the side plate 2 due to horizontal vibration, the elastic deformation of the rubber absorbs the horizontal impact energy, preventing the movable base plate 4 from rigidly colliding with the base 1. At the same time, the viscoelastic properties of the rubber can dissipate some vibration energy and reduce the intensity of horizontal vibration transmitted to the power pack.

[0033] Finally, the trapezoidal reinforcing groove 12 at the bottom of the base 1 optimizes the structural strength and disperses the stress path when vibration is transmitted to the base 1, reducing the deformation of the base 1 and ensuring the stability of the entire shock absorption device. The slot 3 on the side plate 2 not only reduces the weight of the base 1, but also enhances internal heat dissipation through air convection, while facilitating the operator's observation and maintenance of internal components. In addition, the slot 18 and mounting slot 13 in the base 1 play a precise positioning and fixing role for components such as the shock absorption plate 10, the first spring 11, the fixing plate 9, and the air storage cylinder 14, ensuring that each component remains stable during vibration and avoiding the impact of loose installation on the shock absorption effect.

[0034] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A damping device for an engine power pack comprising a base (1), characterized in that: A movable base plate (4) is slidably connected inside the base (1). An engine power pack is integrated on the top of the movable base plate (4). First protrusions (5) are fixedly connected to both sides of the movable base plate (4) in a symmetrical structure. Second protrusions (6) are fixedly connected to the bottom of the movable base plate (4) in a symmetrical structure. Fixed plates (9) are installed on both sides inside the base (1). Multiple sets of first springs (11) are fixedly installed on the top of the fixed plates (9). A damping plate (10) is connected to the end of the first spring (11). Multiple sets of pressure rods (19) are fixedly connected to the bottom of the damping plate (10). A first pressure plate (20) is provided at the bottom of the pressure rod (19). The damping plate (10) and the bottom of the first protrusion (5) are connected to each other. In contact with each other, the fixed plate (9) is equipped with multiple sets of air storage cylinders (14) that cooperate with the pressure rod (19) and the first pressure plate (20). The first pressure plate (20) is located in the air storage cylinder (14). The air storage cylinder (14) is filled with gas, and the outside of the air storage cylinder (14) is connected to a gas supply pipe (15). The other end of the gas supply pipe (15) is connected to a gas collection box (16). A second pressure plate (21) is slidably connected in the gas collection box (16). A second spring (22) is fixedly connected to the top of the second pressure plate (21) and the gas collection box (16). A reinforcing groove (12) is provided at the center of the bottom of the base (1). The reinforcing groove (12) is a trapezoidal structure.

2. The vibration damping device for an engine power pack according to claim 1, characterized by: The base (1) has a second groove (17) on both sides inside for use with the first protrusion (5), and the base (1) has a first groove (8) at the bottom inside for use with the second protrusion (6).

3. The vibration damping device for an engine power pack according to claim 2, characterized by: The base (1) has rubber pads (7) fixedly installed on both sides in a symmetrical structure, and the rubber pads (7) are located on the top of the first protrusion (5).

4. The vibration damping device for an engine power pack according to claim 3, characterized by: The base (1) has side plates (2) on both sides, and the side plates (2) have multiple sets of slots (3).

5. The vibration damping device for an engine power pack according to claim 4, characterized by: The base (1) has an installation groove (13) at the bottom that is used to cooperate with the gas storage cylinder (14), the gas supply pipe (15) and the gas collection box (16). The base (1) has slots (18) on both sides that are used to cooperate with the shock absorption plate (10), the first spring (11) and the fixing plate (9).

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