An elastic vibration isolation device for reducing vibration and noise in a gearbox

Abstract

This utility model relates to the field of gearbox vibration reduction and noise reduction technology, and provides an elastic vibration isolation device for gearbox vibration reduction and noise reduction, including an elastic vibration isolation structure: the elastic vibration isolation structure is coaxially installed between the load-bearing structure and the gearbox; the load-bearing structure includes a base, a positioning bracket, an adjusting bolt, a mounting plate, and a sealing cover; the positioning bracket is fixedly connected to both sides of the top of the base, and the adjusting bolt is threadedly connected to the top of the positioning bracket. This utility model, by setting up an elastic vibration isolation structure, utilizes the synergistic effect of metal springs and a rubber damping layer. The metal springs can bear the self-weight and dynamic load of the gearbox, providing stable support, while the rubber damping layer can effectively dissipate vibration energy and weaken the transmission of low- and mid-frequency vibrations. Simultaneously, the rectangular array distribution of four sets of metal springs ensures uniform force distribution, avoids gearbox tilting, solves the problem of low efficiency in traditional vibration reduction devices, significantly reduces gearbox operating noise, and improves equipment stability.

Description

Technical Field

[0001] This utility model relates to the field of gearbox vibration reduction and noise reduction technology, and in particular to an elastic vibration isolation device for gearbox vibration reduction and noise reduction. Background Technology

[0002] The elastic vibration isolation device for gearbox vibration reduction and noise reduction is a core component that uses elastic elements to block or weaken the transmission of gearbox vibration energy to load-bearing structures such as base, frame, and hull, while suppressing vibration radiation noise.

[0003] Traditional gearbox vibration reduction methods often employ a rigid connection and a simple rubber pad structure. During use, the overall vibration reduction efficiency is low, it cannot effectively block the transmission of low and medium frequency vibrations, has a high risk of resonance, and has poor adaptability. A single elastic element is difficult to match the load and vibration frequency requirements of the gearbox under different working conditions, and is prone to problems such as excessive displacement or insufficient load-bearing capacity. Utility Model Content

[0004] The purpose of this invention is to provide an elastic vibration isolation device for gearbox vibration reduction and noise reduction, in order to solve the defects of low efficiency and poor adaptability of existing gearbox vibration reduction devices.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an elastic vibration isolation device for gearbox vibration reduction and noise reduction, including a load-bearing structure;

[0006] Elastic vibration isolation structure: The elastic vibration isolation structure is coaxially installed between the load-bearing structure and the gearbox;

[0007] The load-bearing structure includes a base, a positioning bracket, adjusting bolts, a mounting plate, and a sealing cover;

[0008] The positioning bracket is fixedly connected to both sides of the top of the base, the adjusting bolt is threadedly connected to the top of the positioning bracket, the mounting plate is fixedly connected to the bottom of the adjusting bolt, and the sealing cover is fixedly connected to the top of the mounting plate.

[0009] Elastic vibration isolation structure: The elastic vibration isolation structure includes a metal spring, a rubber damping layer, an upper connecting plate and a lower connecting plate;

[0010] The lower connecting plate is fixedly connected to the bottom end of the mounting plate, the metal spring is fixedly connected to the top end of the lower connecting plate, the rubber damping layer is wrapped around the outside of the metal spring, and the upper connecting plate is fixedly connected to the top end of the metal spring.

[0011] Preferably, the elastic vibration isolation structure further includes a guide rod, a limiting sleeve, and a buffer pad;

[0012] The guide rod is fixedly connected to the top center of the lower connecting plate, the limiting sleeve is fixedly connected to the bottom center of the upper connecting plate, and the buffer pad is fixedly connected to the top of the guide rod.

[0013] Preferably, the top end of the upper connecting plate is fixedly connected to the bottom end of the gearbox, the buffer pad is in contact with the top end of the inner wall of the limiting sleeve, and the limiting sleeve is slidably sleeved on the outside of the guide rod.

[0014] Preferably, the number of metal springs is four sets, and the four sets of metal springs are distributed in a rectangular array at the top of the lower connecting plate.

[0015] Preferably, the load-bearing structure further includes positioning pins and anti-slip pads;

[0016] The positioning pins are fixedly connected to the top two sides of the mounting plate, and the positioning pins pass through the sealing cover and extend to the outside of the sealing cover. The anti-slip pads are fixedly connected to the bottom of the base. The anti-slip pads are made of rubber and have anti-slip textures at the bottom.

[0017] Preferably, it also includes an adjustment structure;

[0018] The regulating structure includes a pneumatic cylinder, a pneumatic valve, and a pressure gauge;

[0019] The pneumatic cylinder is fixedly connected to the middle of the top of the base, the pneumatic valve is fixedly connected to the outside of the positioning bracket, and the pressure gauge is fixedly connected to the outside of the pneumatic valve.

[0020] Preferably, the adjustment structure further includes a controller and a pressure sensor;

[0021] The pressure sensor is fixedly connected to the top of the upper connecting plate, and the controller is fixedly connected to the outside of the positioning bracket.

[0022] The elastic vibration isolation device for reducing vibration and noise in a gearbox provided by this utility model has the following advantages:

[0023] This invention, by setting up an elastic vibration isolation structure, utilizes the synergistic effect of metal springs and rubber damping layers. The metal springs can bear the self-weight and dynamic load of the gearbox, providing stable support, while the rubber damping layer can effectively dissipate vibration energy and weaken the transmission of low and medium frequency vibrations. At the same time, the rectangular array distribution of the four sets of metal springs can ensure uniform force distribution and prevent gearbox tilting. This solves the problem of low efficiency of traditional vibration reduction devices, significantly reduces gearbox operating noise, and improves equipment stability.

[0024] By setting guide rods and limiting sleeves, the relative displacement between the upper and lower connecting plates can be limited, preventing excessive deformation of the elastic vibration isolation structure. The lubricating coating on the outside of the guide rods and the wear-resistant coating on the inner wall of the limiting sleeves can reduce frictional loss between them, extend the service life of the device, and reduce maintenance costs.

[0025] Based on the aforementioned beneficial effects, an adjustment structure is provided. A pressure sensor monitors the pressure of the gearbox on the elastic vibration isolation structure in real time. The controller adjusts the air pressure valve according to the pressure data, controls the output pressure of the air pressure cylinder, and then adjusts the height of the mounting plate to achieve precise control of the compression of the elastic vibration isolation structure. It can adapt to the vibration reduction requirements of gearboxes of different models and under different working conditions, solving the problem of poor adaptability of traditional devices. At the same time, the pressure gauge can display the internal pressure of the air pressure cylinder in real time, which is convenient for staff to monitor and debug. Attached Figure Description

[0026] Figure 1 This is an axonometric view of the present invention;

[0027] Figure 2 This is a three-dimensional disassembled schematic diagram of the present invention;

[0028] Figure 3 This is a three-dimensional schematic diagram of the base of this utility model;

[0029] Figure 4 This is a schematic diagram showing the disassembled parts of the elastic vibration isolation structure of this utility model;

[0030] Figure 5 This is a three-dimensional schematic diagram of the lower connecting plate of this utility model.

[0031] Explanation of the reference numerals in the figure:

[0032] 11. Base; 12. Positioning bracket; 13. Adjusting bolt; 14. Mounting plate; 15. Sealing cover; 16. Positioning pin; 17. Anti-slip pad;

[0033] 21. Metal spring; 22. Rubber damping layer; 23. Upper connecting plate; 24. Lower connecting plate; 25. Guide rod; 26. Limiting sleeve; 27. Buffer pad;

[0034] 31. Pneumatic cylinder; 32. Pneumatic valve; 33. Pressure gauge; 34. Controller; 35. Pressure sensor. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figures 1-5 This utility model provides an elastic vibration isolation device for reducing vibration and noise in a gearbox, comprising a load-bearing structure:

[0037] Elastic vibration isolation structure: The elastic vibration isolation structure is coaxially installed between the load-bearing structure and the gearbox;

[0038] The load-bearing structure includes a base 11, a positioning bracket 12, an adjusting bolt 13, a mounting plate 14, and a sealing cover 15.

[0039] The positioning bracket 12 is fixedly connected to both sides of the top of the base 11, the adjusting bolt 13 is threadedly connected to the top of the positioning bracket 12, the mounting plate 14 is fixedly connected to the bottom of the adjusting bolt 13, and the sealing cover 15 is fixedly connected to the top of the mounting plate 14.

[0040] The load-bearing structure also includes a positioning pin 16 and an anti-slip pad 17;

[0041] The positioning pins 16 are fixedly connected to the top two sides of the mounting plate 14, and the positioning pins 16 penetrate the sealing cover 15 and extend to the outside of the sealing cover 15. The anti-slip pad 17 is fixedly connected to the bottom of the base 11. The anti-slip pad 17 is made of rubber and has anti-slip texture at the bottom.

[0042] The height of the mounting plate 14 can be initially adjusted by rotating the adjusting bolt 13, the positioning pin 16 can ensure the accurate installation position of the sealing cover 15 and prevent the sealing cover 15 from shifting, and the anti-slip pad 17 can enhance the friction between the base 11 and the ground and prevent the entire device from sliding.

[0043] Elastic vibration isolation structure: The elastic vibration isolation structure includes a metal spring 21, a rubber damping layer 22, an upper connecting plate 23 and a lower connecting plate 24;

[0044] The lower connecting plate 24 is fixedly connected to the bottom end of the mounting plate 14, the metal spring 21 is fixedly connected to the top end of the lower connecting plate 24, the rubber damping layer 22 is wrapped around the outside of the metal spring 21, and the upper connecting plate 23 is fixedly connected to the top end of the metal spring 21.

[0045] The elastic vibration isolation structure also includes a guide rod 25, a limiting sleeve 26, and a buffer pad 27;

[0046] The guide rod 25 is fixedly connected to the top center of the lower connecting plate 24, the limiting sleeve 26 is fixedly connected to the bottom center of the upper connecting plate 23, and the buffer pad 27 is fixedly connected to the top of the guide rod 25.

[0047] There are four sets of metal springs 21. The four sets of metal springs 21 are arranged in a rectangular array at the top of the lower connecting plate 24. Each set of metal springs 21 is wrapped with a rubber damping layer 22. The thickness of the rubber damping layer 22 is 5-10mm, and the rubber damping layer 22 is made of nitrile rubber.

[0048] The outer side of the guide rod 25 is provided with a lubricating coating, and the inner wall of the limiting sleeve 26 is provided with a wear-resistant coating. The lubricating coating is made of polytetrafluoroethylene, and the wear-resistant coating is made of tungsten carbide. The top of the upper connecting plate 23 is fixedly connected to the bottom of the gearbox. The buffer pad 27 is in contact with the top of the inner wall of the limiting sleeve 26, and the limiting sleeve 26 is slidably sleeved on the outer side of the guide rod 25.

[0049] Through the synergistic effect of the metal spring 21 and the rubber damping layer 22, the metal spring 21 bears the gearbox load and provides elastic support, the rubber damping layer 22 dissipates vibration energy, the guide rod 25 and the limiting sleeve 26 limit the displacement direction of the upper connecting plate 23 and the lower connecting plate 24, and the buffer pad 27 can prevent the limiting sleeve 26 from directly colliding with the top of the guide rod 25, thus reducing wear.

[0050] Working principle: When the gearbox vibrates during operation;

[0051] First, the vibration is transmitted to the metal spring 21 and the rubber damping layer 22 through the upper connecting plate 23. The metal spring 21 undergoes elastic deformation and absorbs part of the vibration energy. The rubber damping layer 22 generates internal friction during the deformation of the metal spring 21, converting the vibration energy into heat energy for dissipation.

[0052] Next, the guide rod 25 and the limiting sleeve 26 restrict the upper connecting plate 23 and the lower connecting plate 24 to move only in the vertical direction, avoiding horizontal deviation. The buffer pad 27 prevents the limiting sleeve 26 from colliding with the top of the guide rod 25, reducing wear on the device. The rectangular array distribution of the four sets of metal springs 21 ensures that the gearbox is subjected to uniform force, avoids tilting, significantly improves the vibration reduction and noise reduction effect, and adapts to the operating requirements of the gearbox under different working conditions.

[0053] This step solves the problem of low efficiency in traditional vibration damping devices, significantly reduces gearbox operating noise, and improves equipment stability.

[0054] Please see Figure 2-3 As shown, this embodiment, based on the above embodiment, also includes an adjustment structure;

[0055] The regulating structure includes a pneumatic cylinder 31, a pneumatic valve 32, and a pressure gauge 33;

[0056] The pneumatic cylinder 31 is fixedly connected to the middle of the top of the base 11, the pneumatic valve 32 is fixedly connected to the outside of the positioning bracket 12, and the pressure gauge 33 is fixedly connected to the outside of the pneumatic valve 32.

[0057] The regulating structure also includes a controller 34 and a pressure sensor 35;

[0058] The pressure sensor 35 is fixedly connected to the top of the upper connecting plate 23, and the controller 34 is fixedly connected to the outside of the positioning bracket 12.

[0059] The output end of the pneumatic cylinder 31 is fixedly connected to the middle of the bottom end of the mounting plate 14. The pressure sensor 35 is attached to the bottom end of the gearbox. The controller 34 is electrically connected to the pneumatic valve 32, the pressure gauge 33, and the pressure sensor 35 respectively. The pneumatic valve 32 is connected to the pneumatic cylinder 31 through an air pipe. The pressure gauge 33 is connected to the inside of the pneumatic cylinder 31.

[0060] The pressure sensor monitors the pressure of the gearbox on the elastic vibration isolation structure in real time. The controller adjusts the pneumatic valve according to the pressure data, controls the output pressure of the pneumatic cylinder, and then adjusts the height of the mounting plate.

[0061] Working principle: When performing vibration reduction and noise reduction operations on the gearbox;

[0062] First, the staff placed the base 11 in the designated position, ensuring the anti-slip pad 17 was in contact with the ground to enhance the stability of the device. Then, the bottom of the gearbox was fixedly connected to the top of the upper connecting plate 23. The sealing cover 15 was installed on the top of the mounting plate 14 using the positioning pin 16. The height of the mounting plate 14 was initially adjusted by rotating the adjusting bolt 13, so that the elastic vibration isolation structure was in a preliminary supported state.

[0063] Next, the controller 34 is activated. The pressure sensor 35 detects the pressure of the gearbox on the upper connecting plate 23 in real time and transmits the pressure data to the controller 34. The controller 34 adjusts the air pressure valve 32 according to the preset pressure threshold, controls the output pressure of the air pressure cylinder 31, pushes the mounting plate 14 to move up and down, and adjusts the height of the lower connecting plate 24 so that the metal spring 21 is compressed to a suitable degree. At this time, the pressure gauge 33 displays the internal pressure of the air pressure cylinder 31 in real time. The operator can monitor and fine-tune it in real time through the controller 34.

[0064] This step enables precise control of the compression of the elastic vibration isolation structure, which can adapt to the vibration reduction requirements of gearboxes of different models and under different working conditions, solving the problem of poor adaptability of traditional devices. At the same time, the pressure gauge can display the internal pressure of the pneumatic cylinder in real time, which is convenient for staff to monitor and debug.

[0065] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An elastic vibration isolation device for reducing vibration and noise in a gearbox, comprising a load-bearing structure, characterized in that: Elastic vibration isolation structure: The elastic vibration isolation structure is coaxially installed between the load-bearing structure and the gearbox; The load-bearing structure includes a base (11), a positioning bracket (12), an adjusting bolt (13), a mounting plate (14), and a sealing cover (15); The positioning bracket (12) is fixedly connected to both sides of the top of the base (11), the adjusting bolt (13) is threadedly connected to the top of the positioning bracket (12), the mounting plate (14) is fixedly connected to the bottom of the adjusting bolt (13), and the sealing cover (15) is fixedly connected to the top of the mounting plate (14). Elastic vibration isolation structure: The elastic vibration isolation structure includes a metal spring (21), a rubber damping layer (22), an upper connecting plate (23) and a lower connecting plate (24); The lower connecting plate (24) is fixedly connected to the bottom end of the mounting plate (14), the metal spring (21) is fixedly connected to the top end of the lower connecting plate (24), the rubber damping layer (22) is wrapped around the outside of the metal spring (21), and the upper connecting plate (23) is fixedly connected to the top end of the metal spring (21).

2. A kind of elastic vibration isolation device of gear box vibration reduction and noise reduction according to claim 1, with, The elastic vibration isolation structure also includes a guide rod (25), a limiting sleeve (26), and a buffer pad (27); The guide rod (25) is fixedly connected to the top center of the lower connecting plate (24), the limiting sleeve (26) is fixedly connected to the bottom center of the upper connecting plate (23), and the buffer pad (27) is fixedly connected to the top of the guide rod (25).

3. A kind of elastic vibration isolation device of gear box vibration reduction and noise reduction according to claim 2, with, The top end of the upper connecting plate (23) is fixedly connected to the bottom end of the gearbox, the buffer pad (27) is in contact with the top end of the inner wall of the limiting sleeve (26), and the limiting sleeve (26) is slidably sleeved on the outside of the guide rod (25).

4. The elastic vibration isolation device for gear box noise reduction according to claim 2, characterized in that, The number of metal springs (21) is four sets, and the four sets of metal springs (21) are distributed in a rectangular array at the top of the lower connecting plate (24).

5. The elastic vibration isolation device for gear box noise reduction according to claim 1, characterized in that, The load-bearing structure also includes a positioning pin (16) and an anti-slip pad (17); The positioning pin (16) is fixedly connected to both sides of the top of the mounting plate (14), and the positioning pin (16) passes through the sealing cover (15) and extends to the outside of the sealing cover (15). The anti-slip pad (17) is fixedly connected to the bottom of the base (11). The anti-slip pad (17) is made of rubber and has anti-slip texture at the bottom.

6. A kind of elastic vibration isolation device of gear box vibration reduction and noise reduction according to claim 1, with, It also includes adjusting the structure; The regulating structure includes a pneumatic cylinder (31), a pneumatic valve (32), and a pressure gauge (33); The pneumatic cylinder (31) is fixedly connected to the middle of the top of the base (11), the pneumatic valve (32) is fixedly connected to the outside of the positioning bracket (12), and the pressure gauge (33) is fixedly connected to the outside of the pneumatic valve (32).

7. A gear box vibration and noise reduction elastic isolation device according to claim 6, characterized in that, The adjustment structure also includes a controller (34) and a pressure sensor (35); The pressure sensor (35) is fixedly connected to the top of the upper connecting plate (23), and the controller (34) is fixedly connected to the outside of the positioning bracket (12).

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