An engine front cover vibration damping structure

Abstract

This utility model discloses a vibration damping structure for an engine front cover, including an outer shell. A vibration damping turbine is installed inside the outer shell, and the turbine is connected to the outer shell via vibration damping bolts. A sealing cover is installed on one side surface of the turbine, and a sealing front cover is detachably installed on the side surface of the sealing cover. A cooling impeller is installed between the vibration damping turbine and the outer shell. This utility model provides convenient sealing and assembly of the engine front cover components, using vibration damping bolts to connect and align the various cover shells. It offers advantages such as good sealing and a tight, stable connection, effectively preventing the shell from loosening due to significant engine vibration during operation. Simultaneously, the internal and external heat dissipation design of the shell allows for rapid heat dissipation from the engine, providing excellent cooling performance. The planetary gear transmission mechanism integrated into the end cover shell, combined with an eccentric wheel structure, effectively reduces vibration at the shaft end.

Description

Technical Field

[0001] This utility model relates to the field of engine component technology, specifically to a vibration damping structure for an engine front cover. Background Technology

[0002] One arrangement for the front end of the engine is to mount the fan and air conditioning compressor onto the engine block. To facilitate the installation of the fan's shroud bracket and provide support points for the air conditioning compressor's adjusting screws, additional structural components or features are needed on the engine block to mount the shroud bracket and provide abutment support for the ends of the air conditioning compressor's adjusting screws. This results in a complex engine block structure and increases its size. Furthermore, since the engine block is made of cast iron, the added structural components or features contribute to an increase in engine weight, making the engine relatively heavy.

[0003] Chinese patent document CN215979632U ​​discloses an engine front cover, an engine front cover assembly, and an engine. The front cover body includes a fan mounting portion for mounting a fan guard bracket and a support platform for abutting the end of an adjusting screw on an air conditioning compressor. Integrating the fan mounting portion and support platform onto the front cover body makes the engine front cover a functionally integrated structural component with both a fan guard bracket mounting structure and an adjusting screw support structure. During installation, the fan guard bracket is indirectly mounted to the engine block via the engine front cover, and the end of the air conditioning compressor's adjusting screw is indirectly supported on the engine block via the engine front cover, avoiding the need to directly install the fan guard bracket mounting structure and adjusting screw support structure on the engine block. The engine front cover is made of cast aluminum, which reduces the overall weight of the engine, lowers its overall mass, and reduces its overall size.

[0004] In the aforementioned prior art, the internal components of the engine front cover are easily loosened and misaligned due to vibrations generated by the engine. At the same time, the heat dissipation effect of the end cover is poor. Therefore, it is necessary to develop a vibration damping structure for the engine front cover. Utility Model Content

[0005] The purpose of this utility model is to provide a vibration damping structure for an engine front cover, so as to solve the problems mentioned in the background art, where the internal components of the engine front cover are easily loosened and misaligned due to vibrations generated by the engine, and the end cover has poor heat dissipation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an engine front cover shock absorption structure, including an outer shell, a shock absorption turbine installed inside the outer shell, the shock absorption turbine being connected to the outer shell by shock absorption bolts, a sealing cover being installed on one side surface of the shock absorption turbine, a sealing front cover being detachably installed on the side surface of the sealing cover, and a cooling impeller being installed between the shock absorption turbine and the outer shell.

[0007] Preferably, the side surface of the outer casing is provided with a plurality of exhaust slots, and a fixing shaft hole is provided at the center of the surface of the outer casing.

[0008] Preferably, a drive shaft is installed inside the fixed shaft hole, and the center of the surface of the heat dissipation impeller is fixedly connected to the drive shaft through a slot.

[0009] Preferably, the side surface of the outer casing is provided with a plurality of positioning pins, and the side surface of the shock-absorbing turbine is provided with a limit fixing member at the corresponding position.

[0010] Preferably, the limiting fixing component and the positioning pin tube are connected one-to-one by shock-absorbing bolts.

[0011] Preferably, a motor assembly is mounted on the sealed front cover, and the output end of the motor assembly is connected to an eccentric wheel via a drive shaft.

[0012] Preferably, a fixed collar is installed on the drive shaft, one end of the fixed collar is connected to a drive gear through a fixed shaft, and a planetary internal gear ring is provided on the inner wall of the sealing cover. The drive gear and the planetary internal gear ring are connected by meshing transmission.

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

[0014] This utility model provides a convenient and sealed assembly and fixation of the engine's front cover component. It uses a shock-absorbing bolt assembly to connect and align the various cover shells, which has the advantages of good sealing performance and tight and stable connection. It can effectively prevent the shell from loosening due to large vibrations during engine operation. At the same time, the internal and external heat dissipation design of the shell can quickly dissipate the heat generated by the engine and has a good heat dissipation effect. The planetary gear transmission mechanism with eccentric wheel structure built into the end cover shell can effectively reduce the vibration generated at the shaft end. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the exploded decomposition structure of this utility model;

[0017] Figure 3This is a schematic diagram of a partial installation structure of this utility model.

[0018] In the diagram: 1. Outer shell; 2. Sealed front cover; 3. Motor assembly; 4. Fixed shaft hole; 5. Exhaust port; 6. Positioning pin tube; 7. Vibration damping bolt; 8. Vibration damping turbine; 9. Limiting fastener; 10. Sealing cover; 11. Planetary internal gear ring; 12. Fixed shaft collar; 13. Eccentric wheel; 14. Cooling impeller; 15. Drive shaft; 16. Fixed shaft; 17. Drive gear. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figure 1-3 An embodiment of this utility model provides: an engine front cover shock absorption structure, including an outer shell 1, a shock absorption turbine 8 installed inside the outer shell 1, the shock absorption turbine 8 being connected to the outer shell 1 by shock absorption bolts 7, a sealing cover 10 being installed on one side surface of the shock absorption turbine 8, a sealing front cover 2 being detachably installed on the side surface of the sealing cover 10, and a cooling impeller 14 being installed between the shock absorption turbine 8 and the outer shell 1.

[0021] Furthermore, multiple exhaust slots 5 are installed on the side surface of the outer casing 1, and a fixed shaft hole 4 is installed at the center of the surface of the outer casing 1. A drive shaft 15 is installed inside the fixed shaft hole 4, and the center of the surface of the heat dissipation impeller 14 is fixedly connected to the drive shaft 15 through a slot. By using the motor assembly 3 to drive and control the drive shaft 15 to drive the heat dissipation impeller 14 to rotate at high speed, it can be used to quickly dissipate heat from the inside of the outer casing 1, and the heat is quickly discharged through the exhaust slots 5.

[0022] Furthermore, multiple locating pins 6 are provided on the side surface of the outer casing 1, and limit fixing parts 9 are provided at corresponding positions on the side surface of the damping turbine 8. The limit fixing parts 9 and the locating pins 6 are connected one-to-one by damping bolts 7. The damping bolts 7 can be used to quickly limit and lock the outer casing 1 and the damping turbine 8. The damping bolts 7 achieve the damping effect through internal springs and shock absorbers. When one structure vibrates, the shock absorber can absorb the vibration energy, thereby reducing the impact and vibration on the other structure. It has the advantages of good sealing and tight and stable connection, which can effectively prevent the engine from generating large vibrations during operation and causing the casing to loosen.

[0023] Furthermore, a motor assembly 3 is installed on the sealed front cover 2. The output end of the motor assembly 3 is connected to an eccentric wheel 13 via a drive shaft 15. A fixed shaft collar 12 is installed on the drive shaft 15. One end of the fixed shaft collar 12 is connected to a transmission gear 17 via a fixed shaft 16. A planetary internal gear ring 11 is provided on the inner wall of the sealing cover 10. The transmission gear 17 and the planetary internal gear ring 11 are connected by meshing transmission. By turning on the motor assembly 3, the transmission gear 17 is driven to mesh with the planetary internal gear ring 11. The transmission gear 17 can rotate along the planetary internal gear ring 11. This compound motion enables the planetary transmission gear 17 to disperse and absorb vibration energy in multiple directions, thereby playing a shock absorption role.

[0024] Working principle: During use, a shock-absorbing turbine 8 is installed inside the outer casing 1. The shock-absorbing turbine 8 is connected to the outer casing 1 via shock-absorbing bolts 7. The shock-absorbing bolts 7 can be used to quickly lock the outer casing 1 and the shock-absorbing turbine 8. The shock-absorbing bolts 7 achieve the shock absorption effect through internal springs and shock absorbers. When one structure vibrates, the shock absorber can absorb the vibration energy, thereby reducing the impact and vibration on the other structure. It has the advantages of good sealing and tight and stable connection, which can effectively prevent the casing from loosening due to large vibrations during engine operation. A sealing cover 10 is installed on one side surface of the shock-absorbing turbine 8. A sealing front cover 2 is detachably installed on the side surface of the sealing cover 10. A heat dissipation impeller 14 is installed between the shock-absorbing turbine 8 and the outer casing 1. The heat dissipation impeller 14 is driven to rotate rapidly by the motor assembly 3 using the control transmission shaft 15, which can be used to quickly dissipate heat from the inside of the outer casing 1. The heat is quickly discharged through the exhaust port 5. The motor assembly 3 is turned on to drive the control transmission gear 17 to mesh with the planetary internal gear ring 11. The transmission gear 17 can rotate along the planetary internal gear ring 11. This compound motion allows the planetary transmission gear 17 to disperse and absorb vibration energy in multiple directions, thereby playing a shock-absorbing role.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment are all conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, and will not be described in detail here.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vibration damping structure for an engine front cover, comprising an outer shell (1), characterized in that, A shock-absorbing turbine (8) is installed inside the outer casing (1). The shock-absorbing turbine (8) is connected to the outer casing (1) by shock-absorbing bolts (7). A sealing cover (10) is installed on one side surface of the shock-absorbing turbine (8). A sealing front cover (2) is detachably installed on the side surface of the sealing cover (10). A heat dissipation impeller (14) is installed between the shock-absorbing turbine (8) and the outer casing (1).

2. The engine front cover shock absorption structure according to claim 1, characterized in that: The outer shell (1) has multiple exhaust slots (5) installed on its side surface, and a fixing shaft hole (4) is installed at the center of the surface of the outer shell (1).

3. The engine front cover shock absorption structure according to claim 2, characterized in that: A drive shaft (15) is installed inside the fixed shaft hole (4), and the center of the surface of the heat dissipation impeller (14) is fixedly connected to the drive shaft (15) through a slot.

4. The engine front cover shock absorption structure according to claim 1, characterized in that: The outer shell (1) is provided with a plurality of positioning pins (6) on its side surface, and the shock-absorbing turbine (8) is provided with a limit fixing member (9) at the corresponding position on its side surface.

5. The engine front cover shock absorption structure according to claim 4, characterized in that: The limiting fastener (9) and the positioning pin (6) are connected one-to-one by shock-absorbing bolts (7).

6. The engine front cover shock absorption structure according to claim 1, characterized in that: A motor assembly (3) is installed on the sealed front cover (2), and the output end of the motor assembly (3) is connected to an eccentric wheel (13) via a transmission shaft (15).

7. The engine front cover shock absorption structure according to claim 6, characterized in that: A fixed collar (12) is installed on the drive shaft (15). One end of the fixed collar (12) is connected to a drive gear (17) through a fixed shaft (16). A planetary internal gear ring (11) is provided on the inner wall of the sealing cover (10). The drive gear (17) and the planetary internal gear ring (11) are connected by meshing transmission.

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