Vibration reduction mechanism for power device connection

Abstract

The utility model discloses a vibration reduction mechanism for power device connection, which comprises two mounting pieces which are connected through a pin shaft in an inserted mode, an elastic washer used for buffering axial vibration is arranged between the two mounting pieces, and an elastic ring used for buffering radial vibration is sleeved on the pin shaft. The two installation pieces are arranged on the power device and the piece to be connected and used for connecting the power device and the piece to be connected. The elastic ring is in interference fit with a mounting hole in which the pin shaft is inserted; a plurality of gaskets for filling a gap between the pin shaft and the mounting hole are arranged at the outer end of the pin shaft; according to the device, vibration reduction in all directions between the power device and the to-be-connected piece can be achieved.

Description

Technical Field

[0001] This utility model relates to a vibration damping mechanism, and more particularly to a vibration damping mechanism for connecting a power device. Background Technology

[0002] With technological advancements, people's demands for vehicle comfort are no longer limited to small cars; the requirements for ride comfort in construction machinery vehicles are also constantly increasing. Two important factors affecting comfort are mechanical noise and vibration, and the quality of the vibration damping structure design of the power unit of the mechanical device is crucial to the noise and vibration control of construction vehicles.

[0003] Traditional construction machinery vehicles use shock-absorbing pads on the upper and lower sides of the power unit to reduce vertical vibrations. While this reduces the feeling of bumps, many construction machines, such as loaders and excavators, operate in harsh conditions and often work in conjunction with each other, frequently moving forward, backward, and turning. This results in significant impacts on the mechanical power unit in the front-to-back and left-to-right directions. Using shock-absorbing pads on the upper and lower sides of the power unit cannot achieve vibration reduction in these directions. Summary of the Invention

[0004] Purpose of the utility model: The purpose of this utility model is to provide a vibration damping mechanism for connecting power devices that can achieve vibration reduction in all directions.

[0005] Technical solution: The vibration damping mechanism for connecting a power device according to this utility model includes two mounting parts connected by a pin. An elastic washer for buffering axial vibration is provided between the two mounting parts, and an elastic ring for buffering radial vibration is fitted on the pin. The two mounting parts are respectively set on the power device and the part to be connected for connecting the two.

[0006] Instead of conventional bolting or welding, this design connects the power unit and the component to be connected by two separate mounting components. This allows for some movement between the two components, which are connected by a pin. An elastic washer is fitted onto the pin between the two components. When the two components vibrate axially, they will move closer together and impact each other. The elastic washer cushions this impact and reduces axial vibration. An elastic ring is also fitted on the outside of the elastic washer and located in a mounting hole. When the two components move radially, the pin will impact the inner wall of the mounting hole. The elastic ring cushions this impact and reduces radial vibration. Therefore, this mechanism can simultaneously achieve axial and radial vibration reduction, i.e., isotropic vibration reduction, by connecting the power unit and the component to be connected.

[0007] Preferably, the elastic ring is interference-fitted with the mounting hole where the pin is inserted.

[0008] An interference fit between the elastic ring and the mounting hole can prevent the radial vibration from being unable to be buffered in a timely and effective manner due to the gap between them.

[0009] Preferably, the outer end of the pin is provided with several gaskets for filling the gap between it and the mounting hole.

[0010] Setting shims can also prevent gaps from forming between the pin end face or the mounting hole end face due to unevenness, which would increase the amplitude of axial vibration.

[0011] Preferably, the gasket is fitted onto the pin.

[0012] The shim is fitted onto the pin to prevent radial sliding between the pin end face and the mounting hole end face, the power unit end face, or the end face of the part to be connected.

[0013] Preferably, the elastic washer is fitted onto the pin.

[0014] Fitting the elastic washer onto the pin can prevent the elastic washer from moving radially.

[0015] Preferably, one of the two mounting components is a mounting plate, and the other is two detachably connected U-shaped seats. The pin is set on the mounting plate and inserted into the through hole formed by the two U-shaped seats.

[0016] One mounting component is designed with two detachable U-shaped seats, which facilitates the subsequent disassembly and replacement of the elastic washers and elastic rings on the pin.

[0017] Preferably, either of the two U-shaped seats is fixedly connected to the power unit or the component to be connected.

[0018] Only one of the U-shaped brackets is fixed to the power unit or the part to be connected, which makes it easy to remove both U-shaped brackets and facilitates subsequent maintenance.

[0019] Beneficial effects: Compared with the prior art, the beneficial effects of this utility model are as follows: By setting two mounting parts to connect the power device and the part to be connected, and setting a pin on one mounting part to be inserted into the other mounting part, and fitting an elastic washer and an elastic ring on the pin, both axial and radial vibration reduction can be achieved simultaneously, that is, the vibration reduction of the power device and the part to be connected in all directions is realized. Attached Figure Description

[0020] Figure 1 This is a structural diagram for use by this organization;

[0021] Figure 2 This is a schematic diagram of the explosion mechanism of this organization. Detailed Implementation

[0022] As shown in the figure, the vibration damping mechanism for connecting the power device according to this utility model includes two mounting parts 2 respectively connected to the power device 5 and the part to be connected 6. Each mounting part 2 is provided with a pin 1 that is inserted into a matching mounting hole on the other mounting part 2. An elastic washer 3 located between the two mounting parts 2 and an elastic ring 4 located in the mounting hole are sequentially fitted on the pin 1.

[0023] The power unit 5 can be a mechanical device such as an engine or gearbox, and the connecting part 6 is a structure such as a vehicle frame shell; the power unit 5 has two mounting parts 2 on both opposite sides, or it can have two mounting parts 2 on only one side.

[0024] One of the two mounting components 2 is a mounting plate, and the other consists of two detachably connected U-shaped seats. A pin 1 is mounted on the mounting plate and inserted into a through hole formed by the two U-shaped seats. The through hole formed by the two U-shaped seats is also the mounting hole for the pin 1. The mounting plate can be bolted to the power unit 5, and either of the two U-shaped seats can be connected to the component 6 to be connected, either by bolting or welding. Of course, the mounting plate and the U-shaped seats can also be interchanged. It should be noted that both mounting components 2 can also be plate-shaped structures, with one having the pin 1 and the other having a mounting hole. The mounting hole can be a through hole or a blind hole.

[0025] The mounting plate and pin 1 can be integrally formed. Through holes matching pin 1 can be provided on the mounting plate, and pin 1 can be welded to the mounting plate. The two U-shaped seats can be bolted to each other.

[0026] by Figure 2 Taking the two mounting parts 2 on the right as an example, first, an elastic washer 3 is installed on the pin 1. The outer diameter of the elastic washer 3 is larger than the diameter of the mounting hole, so that the elastic washer 3 will not enter the mounting hole and will be located between the two mounting parts 2. Then, an elastic ring 4 is installed on the pin 1. The outer diameter of the elastic ring 4 is smaller than the outer diameter of the elastic washer 3 and can extend into the mounting hole. The elastic ring 4 is interference-fitted with the mounting hole. The outer end of the elastic ring 4 is flush with the outer end of the pin 1. For the two mounting parts 2 on the right, the outer ends of the pin 1 and the elastic ring 4 refer to the right ends.

[0027] Due to machining and installation errors, there may be an axial gap between the opposite end faces of the pin 1 and the part 6 to be connected. Several shims 7 can be set on the outer end of the pin 1 to fill the axial gap between them. The specific number of shims 7 depends on the size of the axial gap and the thickness of the shims 7. The shims 7 can be fitted onto the pin 1, that is, the shims 7 have a groove that matches the pin 1. In this way, the outer end of the elastic ring 4 can be located inside the outer end of the pin 1, or the outer end of the elastic ring 4 can have a groove that matches the shims 7. This groove is annular and its outer diameter is smaller than the outer diameter of other parts of the elastic ring 4. If the elastic ring 4 is not fitted onto the pin 1, but is only located between the opposite faces of the pin 1 and the part 6 to be connected, radial movement may occur. It should be noted that if the mounting hole, blind hole, or U-shaped seat is connected to the power unit 5, then the shims 7 will move radially between the corresponding end faces.

Claims

1. A vibration damping mechanism for connecting a power unit, characterized in that: It includes two mounting parts (2) that are inserted through a pin (1), and an elastic washer (3) for buffering axial vibration is provided between the two mounting parts (2). An elastic ring (4) for buffering radial vibration is fitted on the pin (1). The two mounting parts (2) are respectively set on the power unit (5) and the part to be connected (6) for connecting the two.

2. The vibration damping mechanism for connecting a power unit according to claim 1, characterized in that: The elastic ring (4) is inserted into the mounting hole of the pin (1) with an interference fit.

3. A vibration damping mechanism for connecting a power unit according to claim 2, characterized in that: The outer end of the pin (1) is provided with several gaskets (7) for filling the gap between it and the mounting hole.

4. A vibration damping mechanism for connecting a power unit according to claim 3, characterized in that: The gasket (7) is fitted onto the pin (1).

5. A vibration damping mechanism for connecting a power unit according to claim 1, characterized in that: The elastic washer (3) is fitted onto the pin (1).

6. A vibration damping mechanism for connecting a power unit according to claim 1, characterized in that: One of the two mounting components (2) is a mounting plate, and the other is two detachably connected U-shaped seats. The pin (1) is set on the mounting plate and inserted into the through hole formed by the two U-shaped seats.

7. A vibration damping mechanism for connecting a power unit according to claim 6, characterized in that: Either of the two U-shaped seats is fixedly connected to the power device (5) or the component to be connected (6).

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