Vibration isolation device of diesel engine generator set

Abstract

The utility model belongs to the technical field of vibration isolators, and discloses a diesel engine generator set vibration isolation device which comprises a mounting bottom plate, a connecting plate arranged above the mounting bottom plate and a mounting base fixed to the top of the connecting plate. The mounting bottom plate and the connecting plate are jointly provided with a limiting mechanism and a vibration isolation mechanism, the limiting mechanism is used for keeping the connecting plate stable in the lifting process of the connecting plate, and the vibration isolation mechanism comprises a vibration isolation assembly; the threaded column penetrates through the top of the connecting plate and is in threaded connection with the connecting plate, the vibration isolation spring is fixed to the lower end of the threaded column, the connecting block is fixed to the lower end of the vibration isolation spring, and the bottom of the connecting block abuts against the top of the mounting bottom plate. According to the vibration isolation spring detection device, a worker only needs to rotate the threaded column, the vibration isolation spring can be detached from or fixed to the shock absorber, the tedious operation that a vibration isolator and used equipment need to be detached and installed, and a plurality of bolts between an upper shell and a base of the vibration isolator need to be detached and installed is omitted, and the detection efficiency of the vibration isolation spring is improved.

Description

Technical Field

[0001] This utility model relates to the field of vibration isolator technology, and in particular to a vibration isolation device for diesel generator sets. Background Technology

[0002] Diesel generator sets generate vibrations during operation. To reduce these vibrations, vibration isolation devices, such as vibration isolators, are typically installed between the bottom of the generator and the ground. However, the springs on these isolators may lose sufficient elasticity and pressure due to mechanical impacts or other factors over long-term use. Therefore, the springs need to be inspected regularly to determine if they have lost sufficient elasticity and pressure, ensuring the equipment can operate normally and safely.

[0003] Chinese utility model patent CN220956576U discloses a heavy-duty spring vibration isolator for offshore platforms. It includes a base and multiple guide and limiting components fixedly connected to the base. It also includes an upper housing, which is movably connected to the base through the guide and limiting components. Multiple damping springs, independent of the guide and limiting components, are arranged at intervals between the upper housing and the base. The two ends of the damping springs are fixedly connected to the upper housing and the base, respectively. The guide and limiting components also include a limiting block with an internal thread. The guide rod has an external thread that matches the internal thread of the limiting block. The limiting block and the guide rod are screwed together by the thread and then locked and reinforced by a nut.

[0004] In the process of testing springs using existing vibration isolators, workers need to disassemble and install the entire vibration isolator from the equipment used. At the same time, multiple bolts between the upper housing and the base of the vibration isolator need to be removed and installed. The whole operation is quite cumbersome and does not improve the efficiency of spring testing. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a vibration isolation device for diesel generator sets.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a vibration isolation device for a diesel generator set, comprising a mounting base plate, a connecting plate disposed above the mounting base plate, and a mounting seat fixed to the top of the connecting plate. The mounting base plate and the connecting plate are jointly provided with a limiting mechanism for maintaining the stability of the connecting plate during the lifting and lowering process. The mounting base plate and the connecting plate are jointly provided with a vibration isolation mechanism, which includes a vibration isolation component. The vibration isolation component includes a threaded post that passes through the top of the connecting plate and is threadedly connected, a vibration isolation spring fixed to the lower end of the threaded post, and a connecting block fixed to the lower end of the vibration isolation spring. The bottom of the connecting block abuts against the top of the mounting base plate.

[0007] By adopting the above technical solution, when the mounting base is subjected to external force and vibrates, both the connecting plate connected to the mounting base and the threaded post connected to the connecting plate vibrate. Under the action of vibration, the vibration isolation spring begins to extend and retract, absorbing the force generated by the external force, thereby reducing the intensity of the external force and achieving vibration isolation. During the maintenance of the vibration isolation spring, workers only need to rotate the threaded post to remove or fix the threaded post and the vibration isolation spring fixed to it from the shock absorber. This eliminates the need for disassembling and installing the entire vibration isolator from the equipment used, and the cumbersome operation of removing and installing multiple bolts between the upper housing and the base of the vibration isolator, thus improving the inspection efficiency of the vibration isolation spring.

[0008] Furthermore, the vibration isolation mechanism also includes a dustproof component, which includes an internally threaded tube fixed to the top of the mounting base plate, an annular block threaded to the internally threaded tube, an annular connecting plate fixed to the upper end of the annular block, an annular rotating plate rotatably mounted to the lower end of the threaded column, and a telescopic tube fixed between the annular connecting plate and the annular rotating plate. The vibration isolation spring is located inside the telescopic tube, the connecting block cooperates with the inner wall of the internally threaded tube, and the bottom of the annular block abuts against the top of the connecting block.

[0009] By adopting the above technical solution, during the operation of the vibration isolator, the vibration isolation spring is located inside the telescopic tube, reducing the probability of corrosion caused by contact between the spring and air or moisture. Operators can rotate the annular connecting plate, causing the annular block to rotate, thus achieving the purpose of disassembling and fixing the annular block to the internal threaded tube, facilitating the disassembly or installation of the vibration isolation spring. Because the bottom of the annular block abuts against the top of the connecting block, operators can rotate the threaded column to change the length of the vibration isolation spring during operation, extending its service life.

[0010] Furthermore, the limiting mechanism includes a buffer assembly, which includes a slider fixed to the bottom of the connecting plate, a sealing sleeve fixed to the top of the mounting base plate and slidingly engaging with the slider, a sealing block fixed to the bottom of the slider, a storage box fixed to the side wall of the sealing sleeve, and a connecting pipe that passes through and is fixed to the bottom of the storage box. The lower end of the connecting pipe passes through and is fixed to the side wall of the sealing sleeve. The limiting mechanism also includes a limiting component for limiting the connecting plate.

[0011] By adopting the above technical solution, during the descent of the connecting plate, both the slider connected to the connecting plate and the sealing block connected to the slider descend, thereby reducing the space between the slider and the bottom wall of the sealing sleeve and increasing the pressure. The damping oil between the sealing sleeve and the slider moves from the connecting pipe to the storage box. The unique viscoelasticity of the damping oil can buffer the external force on the connecting plate, thereby improving the vibration isolation effect of the vibration isolator.

[0012] Furthermore, the limiting assembly includes a limiting rod that extends through the top of the connecting plate and is slidably fitted therein, a limiting sleeve that is fixedly sleeved on the limiting rod and located between the connecting plate and the mounting base plate, an elastic sleeve that is slidably sleeved on the limiting rod and located above the connecting plate, and a nut that is sleeved on the limiting rod and threadedly connected thereto. The lower end of the nut is fixed to the upper end of the elastic sleeve, and the distance between the top of the connecting plate and the lower end of the elastic sleeve is equal to the distance between the bottom of the connecting plate and the upper end of the limiting sleeve.

[0013] By adopting the above technical solution, the stability of the connecting plate during the lifting and lowering process is improved due to the good limiting of the limiting rod, while the elastic sleeve can buffer the force generated when the connecting plate rises.

[0014] Furthermore, a vertical rod is fixed to the bottom of the annular rotating plate, and a sleeve rod that slides with the vertical rod is fixed to the top of the annular connecting plate.

[0015] By adopting the above technical solution, the setting of the vertical rod and sleeve rod facilitates the disassembly or installation between the annular block and the external threaded sleeve.

[0016] Furthermore, a sliding rod that slides through the threaded column is provided and slides with the threaded column, the vibration isolation spring is sleeved on the sliding rod, and the lower end of the sliding rod is fixed to the top of the connecting block.

[0017] By adopting the above technical solution, the design of the slide bar improves the stability during the spring's extension and contraction process.

[0018] Furthermore, an auxiliary sleeve is fixed to the top of the threaded column. The cross-section of the auxiliary sleeve is a regular hexagon, and the slide rod is inserted into the inner wall of the auxiliary sleeve.

[0019] By adopting the above technical solution and the setting of the auxiliary sleeve, it is convenient to disassemble or install the threaded column.

[0020] Furthermore, multiple buffer through holes are provided through the side wall of the elastic sleeve.

[0021] By adopting the above technical solution and setting the buffer through hole, the elasticity of the elastic sleeve is improved.

[0022] In summary, the present invention has the following beneficial effects: In this application, the operator only needs to rotate the threaded column to disassemble or fix the threaded column and the vibration isolation spring fixed to the threaded column from the shock absorber, which eliminates the need to disassemble and install the entire vibration isolator from the equipment used, and at the same time, the cumbersome operation of disassembling and installing multiple bolts between the upper shell and the base of the vibration isolator, thus improving the testing efficiency of the vibration isolation spring. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0024] Figure 2 yes Figure 1 A cross-sectional view showing the connection structure between the threaded column and the connecting plate after removing the mounting base;

[0025] Figure 3 This is a cross-sectional schematic diagram of an embodiment of the present invention to highlight the connection structure between the slider and the sealing sleeve;

[0026] Figure 4 yes Figure 2 Enlarged diagram of point A in the middle.

[0027] In the diagram: 1. Mounting base plate; 2. Connecting plate; 3. Mounting seat; 4. Limiting mechanism; 41. Buffer assembly; 411. Slider; 412. Sealing sleeve; 413. Sealing block; 414. Storage box; 415. Connecting pipe; 42. Limiting assembly; 421. Limiting rod; 422. Limiting sleeve; 423. Elastic sleeve; 424. Nut; 5. Vibration isolation mechanism; 51. Vibration isolation assembly; 511. Threaded column; 512. Vibration isolation spring; 513. Connecting block; 52. Dustproof assembly; 521. Internally threaded pipe; 522. Annular block; 523. Annular connecting plate; 524. Annular rotating plate; 525. Telescopic pipe; 6. Vertical rod; 7. Sleeve rod; 8. Slide rod; 9. Auxiliary sleeve. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] like Figure 1-4 As shown in the illustration, this application discloses a vibration isolation device for a diesel generator set, including a mounting base plate 1, a connecting plate 2, a mounting seat 3, a limiting mechanism 4, and a vibration isolation mechanism 5. The connecting plate 2 is disposed above the mounting base plate 1, and the mounting seat 3 is fixed to the top of the connecting plate 2 (by opening a through hole in the top of the mounting seat 3 and installing the product onto the diesel generator with bolts). The vibration isolation mechanism 5 is jointly disposed on the mounting base plate 1 and the connecting plate 2, and includes a vibration isolation component 51 and a dustproof component 52. The vibration isolation component 51 includes a threaded post 511, a vibration isolation spring 512, and a connecting block 513. The threaded post 511 passes through the top of the connecting plate 2 and is threadedly connected. The vibration isolation spring 512 is fixed to the lower end of the threaded post 511, and the connecting block 513 is fixed to the lower end of the vibration isolation spring 512. The bottom of the connecting block 513 abuts against the top of the mounting base plate 1.

[0030] When the mounting base 3 is subjected to external force and vibrates, the connecting plate 2 connected to the mounting base 3 and the threaded post 511 connected to the connecting plate 2 also vibrate. Under the action of vibration, the vibration isolation spring 512 begins to extend and retract, absorbing the force generated by the external force, thereby reducing the intensity of the external force and playing the role of vibration isolation. During the maintenance of the vibration isolation spring 512, the operator only needs to rotate the threaded post 511 to remove or fix the threaded post 511 and the vibration isolation spring 512 fixed to the threaded post 511 from the shock absorber. This eliminates the need to disassemble and install the entire vibration isolator from the equipment used, and also eliminates the cumbersome operation of removing and installing multiple bolts between the upper shell and the base of the vibration isolator, thus improving the inspection efficiency of the vibration isolation spring 512.

[0031] The dustproof assembly 52 includes an internally threaded tube 521, an annular block 522, an annular connecting plate 523, an annular rotating plate 524, and a telescopic tube 525. The internally threaded tube 521 is fixed to the top of the mounting base plate 1. The annular block 522 is threadedly connected to the internally threaded tube 521, and the connecting block 513 mates with the inner wall of the internally threaded tube 521. The bottom of the annular block 522 abuts against the top of the connecting block 513, and the annular connecting plate 523 is fixed to the upper end of the annular block 522. The annular rotating plate 524 is rotatably mounted on the lower end of the threaded post 511. The telescopic tube 525 is fixed between the annular connecting plate 523 and the annular rotating plate 524, and the vibration damping spring 512 is located inside the telescopic tube 525.

[0032] During the operation of the vibration isolator, the vibration isolation spring 512 is located inside the telescopic tube 525, reducing the probability of corrosion caused by contact between the spring and water vapor. By rotating the annular connecting plate 523, the operator can disassemble and fix the annular block 522 to the internal threaded tube 521, facilitating the disassembly or installation of the vibration isolation spring 512. Because the bottom of the annular block 522 abuts against the top of the connecting block 513, the operator can change the working length of the vibration isolation spring 512 by rotating the threaded column 511, extending its service life.

[0033] A limiting mechanism 4 is jointly mounted on the mounting base plate 1 and the connecting plate 2. The limiting mechanism 4 is used to keep the connecting plate 2 stable during the lifting and lowering process. The limiting mechanism 4 includes a buffer assembly 41 and a limiting assembly 42. The buffer assembly 41 includes a slider 411, a sealing sleeve 412, a sealing block 413, a storage box 414, and a connecting pipe 415. The slider 411 is fixed to the bottom of the connecting plate 2, and the sealing sleeve 412 is fixed to the top of the mounting base plate 1 and slides in cooperation with the slider 411. The sealing block 413 is fixed to the bottom of the slider 411, and the storage box 414 is fixed to the side wall of the sealing sleeve 412. The connecting pipe 415 passes through the bottom of the storage box 414 and is fixed therethrough. The lower end of the connecting pipe 415 passes through and is fixed to the side wall of the sealing sleeve 412. During the descent of the connecting plate 2, the slider 411 connected to the connecting plate 2 and the sealing block 413 connected to the slider 411 both descend, thereby reducing the space between the slider 411 and the inner bottom wall of the sealing sleeve 412 and increasing the pressure. The damping oil between the sealing sleeve 412 and the slider 411 moves from the connecting pipe 415 to the storage box 414. The unique viscoelasticity of the damping oil can buffer the external force on the connecting plate 2, thereby improving the vibration isolation effect of the vibration isolator.

[0034] The limiting assembly 42 is used to limit the connection plate 2. The limiting assembly 42 includes a limiting rod 421, a limiting sleeve 422, an elastic sleeve 423, and a nut 424. The limiting rod 421 is inserted through the top of the connection plate 2 and is slidably engaged. The limiting sleeve 422 is fixedly sleeved on the limiting rod 421 and located between the connection plate 2 and the mounting base plate 1. The elastic sleeve 423 is slidably sleeved on the limiting rod 421 and located above the connection plate 2. The distance between the top of the connection plate 2 and the lower end of the elastic sleeve 423 is equal to the distance between the bottom of the connection plate 2 and the upper end of the limiting sleeve 422. The nut 424 is sleeved on the limiting rod 421 and threadedly connected, and the lower end of the nut 424 is fixed to the upper end of the elastic sleeve 423. During the lifting and lowering process of the connecting plate 2, the stability of the connecting plate 2 during the movement is improved due to the good limiting of the limiting rod 421, while the elastic sleeve 423 can buffer the force generated when the connecting plate 2 rises.

[0035] A vertical rod 6 is fixed to the bottom of the annular rotating plate 524, and a sleeve rod 7 that slides with the vertical rod 6 is fixed to the top of the annular connecting plate 523. The vertical rod 6 and the sleeve rod 7 facilitate the disassembly or installation between the annular block 522 and the external threaded sleeve.

[0036] A sliding rod 8 is slidably fitted onto the threaded post 511. A vibration damping spring 512 is sleeved on the sliding rod 8, and the lower end of the sliding rod 8 is fixed to the top of the connecting block 513. The sliding rod 8 improves the stability during the spring's extension and contraction.

[0037] An auxiliary sleeve 9 is fixed to the top of the threaded post 511. The cross-section of the auxiliary sleeve 9 is a regular hexagon, and the slide rod 8 is inserted into the inner wall of the auxiliary sleeve 9. The auxiliary sleeve 9 facilitates the disassembly or installation of the threaded post 511.

[0038] Multiple buffer through holes are provided through the side wall of the elastic sleeve 423. The buffer through holes improve the elasticity of the elastic sleeve.

[0039] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A vibration isolation device for a diesel generator set, comprising a mounting base plate (1), a connecting plate (2) disposed above the mounting base plate (1), and a mounting seat (3) fixed to the top of the connecting plate (2), wherein the mounting base plate (1) and the connecting plate (2) are jointly provided with a limiting mechanism (4) for maintaining the stability of the connecting plate (2) during the lifting and lowering process, and the mounting base plate (1) and the connecting plate (2) are jointly provided with a vibration isolation mechanism (5), characterized in that: The vibration isolation mechanism (5) includes a vibration isolation component (51), which includes a threaded post (511) that passes through the top of the connecting plate (2) and is threadedly connected, a vibration isolation spring (512) fixed to the lower end of the threaded post (511), and a connecting block (513) fixed to the lower end of the vibration isolation spring (512). The bottom of the connecting block (513) abuts against the top of the mounting base plate (1).

2. The vibration isolation device for a diesel generator set according to claim 1, characterized in that: The vibration isolation mechanism (5) further includes a dustproof component (52), which includes an internally threaded tube (521) fixed to the top of the mounting base plate (1), an annular block (522) threadedly connected to the internally threaded tube (521), an annular connecting plate (523) fixed to the upper end of the annular block (522), an annular rotating plate (524) rotatably installed at the lower end of the threaded column (511), and a telescopic tube (525) fixed between the annular connecting plate (523) and the annular rotating plate (524). The vibration isolation spring (512) is located inside the telescopic tube (525), the connecting block (513) cooperates with the inner wall of the internally threaded tube (521), and the bottom of the annular block (522) abuts against the top of the connecting block (513).

3. The vibration isolation device for a diesel generator set according to claim 1, characterized in that: The limiting mechanism (4) includes a buffer assembly (41), which includes a slider (411) fixed to the bottom of the connecting plate (2), a sealing sleeve (412) fixed to the top of the mounting base plate (1) and slidingly engaged with the slider (411), a sealing block (413) fixed to the bottom of the slider (411), a storage box (414) fixed to the side wall of the sealing sleeve (412), and a connecting pipe (415) that passes through and is fixed to the bottom of the storage box (414). The lower end of the connecting pipe (415) passes through and is fixed to the side wall of the sealing sleeve (412). The limiting mechanism (4) also includes a limiting assembly (42) for limiting the connecting plate (2).

4. The vibration isolation device for a diesel generator set according to claim 3, characterized in that: The limiting component (42) includes a limiting rod (421) that is slidably disposed on the top of the connecting plate (2), a limiting sleeve (422) that is fixedly sleeved on the limiting rod (421) and located between the connecting plate (2) and the mounting base plate (1), an elastic sleeve (423) that is slidably sleeved on the limiting rod (421) and located above the connecting plate (2), and a nut (424) that is sleeved on the limiting rod (421) and threadedly connected. The lower end of the nut (424) is fixed to the upper end of the elastic sleeve (423). The distance between the top of the connecting plate (2) and the lower end of the elastic sleeve (423) is equal to the distance between the bottom of the connecting plate (2) and the upper end of the limiting sleeve (422).

5. A vibration isolation device for a diesel generator set according to claim 2, characterized in that: The bottom of the annular rotating plate (524) is fixed with a vertical rod (6), and the top of the annular connecting plate (523) is fixed with a sleeve rod (7) that slides with the vertical rod (6).

6. The vibration isolation device for a diesel generator set according to claim 1, characterized in that: A slide rod (8) that slides through the threaded post (511) and is slidably engaged with the threaded post (511) is provided. The vibration isolation spring (512) is sleeved on the slide rod (8). The lower end of the slide rod (8) is fixed to the top of the connecting block (513).

7. A vibration isolation device for a diesel generator set according to claim 6, characterized in that: An auxiliary sleeve (9) is fixed to the top of the threaded column (511). The cross-section of the auxiliary sleeve (9) is a regular hexagon. The slide rod (8) is inserted into the inner wall of the auxiliary sleeve (9).

8. A vibration isolation device for a diesel generator set according to claim 4, characterized in that: Multiple buffer through holes are provided through the side wall of the elastic sleeve (423).

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