Multistage damping pad for compressor

Abstract

The utility model discloses a kind of multistage shock-absorbing pad feet of compressor, it is related to compressor technical field, including connecting portion, the connecting portion bottom is fixedly provided with transition portion, the transition portion bottom is fixedly provided with shock-absorbing portion, the shock-absorbing portion bottom is fixedly provided with support portion, the connecting portion, the transition portion, the shock-absorbing portion and the support portion are integrally formed;The multistage shock-absorbing pad feet of compressor provided by the utility model is designed by adopting multilayer level compressor rubber pad foot, and essentially it is to upgrade a simple "pad" to a function integrated "micro shock-absorbing system". Through material combination and structure design, it realizes the overall leap of shock absorption, sound insulation, stability and durability, to cope with the use of modern high-power, high-silence requirement compressor.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a multi-stage shock-absorbing pad for a compressor. Background Technology

[0002] A compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas. Compressor feet are components installed at the bottom of the compressor for support and vibration damping, playing an important role in the stable operation and service life of the compressor.

[0003] Most existing compressor feet are single-stage feet. This structure has only one natural frequency and is effective for vibrations at specific frequencies, but its effectiveness drops sharply outside the frequency range and it is prone to resonance.

[0004] Therefore, a multi-stage shock-absorbing foot for compressors is proposed to solve the above problems. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a multi-stage shock-absorbing pad for a compressor to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a multi-stage shock-absorbing pad for a compressor, which includes a connecting part, a transition part fixedly disposed at the bottom of the connecting part, a shock-absorbing part fixedly disposed at the bottom of the transition part, and a support part fixedly disposed at the bottom of the shock-absorbing part, wherein the connecting part, the transition part, the shock-absorbing part and the support part are integrally formed.

[0007] Preferably, the connecting part, the transition part, the shock-absorbing part, and the supporting part are all made of rubber.

[0008] Preferably, the hardness of the damping part is less than the hardness of the support part.

[0009] Preferably, the bottom of the transition portion is embedded between the connecting portion and the shock-absorbing portion, and the shock-absorbing portion is embedded at the top of the support portion.

[0010] Preferably, the outer surface and inner cavity of both the shock-absorbing part and the support part adopt a wave-shaped design.

[0011] Preferably, all junctions between levels are chamfered.

[0012] Preferably, the bottom surface of the support portion is provided with an inner cavity, which opens outward from top to bottom.

[0013] The beneficial effects of this utility model are: The softer damping section absorbs high-frequency vibrations, while the stiffer support section supports and copes with low-frequency vibrations, achieving "wideband" damping from high to low frequencies. The design achieves "stiff static support and soft dynamic damping," meaning it is sufficiently "stiff" to bear the static weight of the compressor, providing stable support, while being "soft" to effectively deform and absorb vibrations when coping with dynamic vibrations. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present utility model.

[0015] Figure 2 This is a cross-sectional schematic diagram of the first embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the overall structure of the second embodiment of the present utility model.

[0017] Figure 4 This is a cross-sectional schematic diagram of the second embodiment of the present invention.

[0018] Figure 5 This is a schematic diagram of the prior art of this utility model.

[0019] Figure 6 This is a cross-sectional schematic diagram of the prior art of this utility model.

[0020] Explanation of reference numerals in the attached figures: 11. Connecting part; 12. Transition part; 13. Shock-absorbing part; 14. Support part. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Reference Figures 1 to 6 As one embodiment of the present invention, a multi-stage shock-absorbing pad for a compressor is provided. This multi-stage shock-absorbing pad for a compressor includes a connecting part 11, a transition part 12, a shock-absorbing part 13, and a supporting part 14.

[0023] Reference Figure 4 and Figure 5The existing foot pads include a connecting part 11 and a supporting part 14. A connecting hole is located in the center of the foot pad, through which the compressor support foot connects to the connecting part 11. The supporting part 14 also has a shock-absorbing function. The foot pads are made of rubber. Existing single-stage foot pads mainly rely on the elasticity of the rubber material itself to provide basic cushioning and vibration isolation. This can be understood as "hard resistance," with limited effectiveness. Moreover, single-stage vibration damping is limited, typically only providing good isolation for vibrations within a specific frequency range. Once the compressor's operating frequency changes, such as with a variable frequency compressor, its effectiveness decreases significantly. If the compressor's excitation frequency is close to the foot pad's natural frequency, resonance can easily occur, amplifying vibrations and leading to increased noise or even structural damage. To achieve good vibration damping, single-layer foot pads usually need to be made very soft, but this can cause significant shaking and displacement of the compressor during startup, shutdown, or when subjected to external forces, posing a safety hazard.

[0024] Example 1 Reference Figure 1 and Figure 2 In this embodiment, the multi-stage shock-absorbing pad includes a connecting part 11, a transition part 12, a shock-absorbing part 13, and a supporting part 14. All parts of the pad are made of rubber. The supporting part 14, in addition to its supporting function, also serves a shock-absorbing function. The hardness of the supporting part 14 is greater than that of the shock-absorbing part 13. The layers are interlocked, with the transition part 12 embedded between the connecting part 11 and the shock-absorbing part 13. The shock-absorbing part 13 is embedded on top of the supporting part 14. All layer connections are chamfered. By designing layers with different hardness and structures, the pad can work effectively in multiple frequency ranges. The softer layers absorb high-frequency vibrations, while the harder layers support and respond to low-frequency vibrations, achieving "wideband" shock absorption from high to low frequencies. The softer shock-absorbing part 13 acts as an acoustic decoupler, effectively blocking the noise radiated outwards through the foot pad in the form of solid-borne sound transmission from the compressor body vibration. The harder supporting part 14 provides a stable support platform to prevent the equipment from sinking; the shock-absorbing part 13 is specifically responsible for absorbing instantaneous impacts.

[0025] Example 2 Reference Figure 3 and Figure 4In this embodiment, the multi-stage shock-absorbing pad includes a connecting part 11, a transition part 12, a shock-absorbing part 13, and a supporting part 14. All parts of the pad are made of rubber. The supporting part 14, in addition to its supporting function, also serves a shock-absorbing function. The hardness of the supporting part 14 is greater than that of the shock-absorbing part 13. The outer surfaces and inner cavities of both the shock-absorbing part 13 and the supporting part 14 adopt a wave-shaped design, and all layer connections are chamfered. By setting the outer layers as inner layers, the design achieves "hard static support and soft dynamic shock absorption." That is, it is sufficiently "hard" to bear the static weight of the compressor, providing stable support; while being "soft" to cope with dynamic vibrations, effectively deforming and absorbing shock. The multi-layer structure can also more rationally distribute and transfer stress, avoiding excessive local stress. Different layers undertake different tasks, avoiding a single material bearing all types of mechanical loads, thereby delaying material aging and performance degradation. Using different rubber materials for different layers can better adapt to the operating conditions such as variable frequency compressor speed changes and complex installation environments.

[0026] Working principle: In a static state: the shock-absorbing feet bear the static weight of the compressor, and the support part 14 is slightly compressed, in a pre-compression state. This ensures stability during operation.

[0027] Start-up and low-speed operation: The starting torque of the compressor motor will generate a large instantaneous impact force. This impact force will cause the shock absorber feet to deform significantly. At this time, the support part 14 will deform violently and quickly dissipate the impact energy through its high internal damping to prevent it from colliding with the chassis.

[0028] Stable operation: The compressor enters uniform speed operation, generating continuous, periodic vibrations. At this time, the damping pads enter the high-efficiency working zone, and the support part 14 undergoes regular, small-amplitude compression and rebound, continuously converting vibration energy into heat energy. The high-frequency harmonic components in the vibration are absorbed and filtered by the friction damping interface and the hard layer in the composite rubber layer, preventing high-frequency noise from propagating through the structure.

[0029] Shutdown: Similar to the startup process, the motor's recoil braking generates another impact. The shock-absorbing feet absorb this shutdown impact energy, allowing the compressor to stop smoothly and avoiding sudden, large noises and mechanical stress.

[0030] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A multi-stage shock-absorbing pad for a compressor, comprising a connecting part (11), characterized in that: A transition portion (12) is fixedly provided at the bottom of the connecting portion (11), a shock-absorbing portion (13) is fixedly provided at the bottom of the transition portion (12), and a support portion (14) is fixedly provided at the bottom of the shock-absorbing portion (13). The connecting portion (11), the transition portion (12), the shock-absorbing portion (13), and the support portion (14) are integrally formed. The materials of the connecting portion (11), the transition portion (12), the shock-absorbing portion (13), and the support portion (14) are all rubber. The hardness of the shock-absorbing portion (13) is less than that of the support portion (14).

2. The compressor multi-stage shock-absorbing pad according to claim 1, characterized in that: The transition part (12) is embedded between the connecting part (11) and the shock-absorbing part (13), and the bottom of the shock-absorbing part (13) is embedded in the top of the support part (14).

3. The compressor multi-stage shock-absorbing pad according to claim 1, characterized in that: The outer surface and inner cavity of the shock-absorbing part (13) and the support part (14) are both designed with a wave-shaped shape.

4. The compressor multi-stage shock-absorbing pad according to claim 1, characterized in that: All connections between levels are chamfered.

5. A compressor multi-stage shock-absorbing pad according to claim 1, characterized in that: The bottom surface of the support part (14) is provided with an inner cavity, which opens outward from top to bottom.

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