Stiffness-flexibility combined vibration damping adjusting device

Abstract

This invention discloses a rigid-flexible combined vibration damping adjustment device, comprising: an upper damping assembly, which includes an upper fixed plate and an upper damping rubber block disposed on the lower surface of the upper fixed plate; a lower damping assembly, which includes a lower fixed plate and a lower damping rubber block disposed on the upper surface of the lower fixed plate; an adjustment assembly, which includes positive and negative lead screws, an upper adjustment plate, and a lower adjustment plate, wherein the positive and negative lead screws are vertically arranged and threaded between the upper and lower adjustment plates; and a limiting assembly, which includes a limiting component and a support shaft, wherein the support shaft is disposed on the limiting component, and the limiting component has an arc surface with a toothed structure. This device facilitates easy adjustment of the height of the railway passenger car shock absorber by operators and improves the reliability of the rigid-flexible combined vibration damping adjustment device.

Description

Technical Field

[0001] This invention relates to the field of mechanical vibration reduction technology, and in particular to a vibration reduction and adjustment device that combines rigidity and flexibility. Background Technology

[0002] To address the issue of malfunction in the rigid-flexible vibration damping adjustment device during the installation of air conditioning units in railway passenger cars, the following solution is proposed: First, a rubber rigid-flexible vibration damping adjustment device is pre-fixed under the mounting feet of the air conditioning unit. Then, the unit is first placed onto the mounting base on the installation platform. At this point, almost the entire weight of the unit is supported by the non-load-bearing sealing strip at the bottom of the unit. Next, adjusting shims are inserted into the gap between the rigid-flexible vibration damping adjustment device and the mounting base to fill the gap. Finally, the lower mounting plate of the rigid-flexible vibration damping adjustment device is tightened to the mounting base with bolts. In this structure, because the gap between the rigid-flexible vibration damping adjustment device and the mounting base is sealed by inserting adjusting shims in the previous step, there will inevitably be residual gaps. During the tightening process, the rigid-flexible vibration damping adjustment device, along with the air conditioning unit, will be further pressed downwards, causing the pressure on the bottom of the air conditioning unit and the sealing strip to increase further. As a result, the rubber rigid-flexible vibration damping adjustment device, which should bear the pressure, bears the bidirectional tension. The sealing strip, which should only play a sealing role, bears pressure exceeding the weight of the air conditioning unit. Ultimately, the vibration energy of the air conditioning unit during operation cannot be filtered by the rigid-flexible vibration damping adjustment device, but is transmitted to the vehicle interior through the bottom plate structure, which has a better vibration transmission effect, and is pressed into a near-rigid sealing strip. Therefore, how to design a rigid-flexible vibration damping adjustment device that combines rigidity and flexibility, and allows for convenient adjustment of the damping height after the heavy object is placed, so as to ensure that the weight of the heavy object is borne by the rigid-flexible vibration damping adjustment device and that all vibration energy is filtered and absorbed through the rigid-flexible vibration damping adjustment device, ultimately solving the problem of vibration energy transmission from air conditioning units to the interior of railway passenger cars. Summary of the Invention

[0003] This invention provides a rigid-flexible vibration damping adjustment device, which enables operators to easily adjust the height of railway passenger car shock absorbers and improves the reliability of the rigid-flexible vibration damping adjustment device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This invention provides a vibration damping and adjustment device that combines rigidity and flexibility, comprising:

[0006] The upper shock absorption assembly includes an upper fixed plate and an upper shock absorption rubber block, wherein the upper shock absorption rubber block is disposed on the lower surface of the upper fixed plate;

[0007] The lower damping assembly includes a lower fixed plate and a lower damping rubber block, wherein the lower damping rubber block is disposed on the upper surface of the lower fixed plate;

[0008] An adjustment assembly, comprising a positive and negative lead screw, an upper adjustment plate, and a lower adjustment plate, wherein the positive and negative lead screw is arranged vertically and threadedly connected between the upper adjustment plate and the lower adjustment plate;

[0009] A limiting component, comprising a limiting part and a support shaft, wherein the support shaft is disposed on the limiting part, the limiting part is provided with an arc surface, and the arc surface is provided with a tooth structure;

[0010] The upper adjusting plate is located at the bottom of the upper shock-absorbing rubber block, and the lower adjusting plate is located at the top of the lower shock-absorbing rubber block. The support shaft is rotatably mounted on the upper adjusting plate, and the lower adjusting plate is also provided with a limit groove. The limiting component is arranged above the limit groove, and the tooth structure is engaged in the limit groove.

[0011] Furthermore, the upper shock-absorbing rubber block has a mounting groove in the middle, the upper fixing plate has a mounting shaft hole on the side, the mounting shaft hole is fixedly connected to the support shaft, and the mounting groove is arranged above the limiting component.

[0012] Furthermore, the forward and reverse lead screws include a fixed shaft, with a forward lead screw provided on the upper end face of the fixed shaft and a reverse lead screw provided on the lower end face of the fixed shaft, and the cross-section of the fixed shaft is a polygonal structure.

[0013] Furthermore, the upper adjusting plate is provided with the adjusting component and the limiting component at both ends respectively.

[0014] Furthermore, the two limiting components are arranged symmetrically, and the lower adjusting plate is provided with a limiting slot that cooperates with the limiting components.

[0015] Furthermore, the arcuate surface is distributed along an involute line about the axis of the support shaft.

[0016] The technical solution of this invention has the following advantages over existing technologies: The vibration damping structure uses a simple and durable rubber material, which is divided into upper and lower sections. A rigid adjustment plate is installed in the middle of each section, and the height of the two adjustment plates is adjusted via positive and negative screws. To ensure structural stability, two limiting components of an involute volute type are installed on both sides of the upper adjustment plate. When the gap between the upper and lower adjustment plates increases, this support shaft can rotate downwards under its own weight, allowing the larger-diameter teeth on the outer side of the volute to naturally fit against the lower adjustment plate. A groove is provided on the lower adjustment plate to more firmly hold the bottom gear on the limiting component, ensuring the structural stability of the upper and lower adjustment plates. Through this structure and working principle, after the air conditioning unit is installed, the distance between the upper and lower adjustment plates can be adjusted according to the actual gap height, ensuring that the final distance is slightly larger than the original gap. This ensures that the weight of the unit is borne by the rigid-flexible vibration damping adjustment device, and the unit's vibration energy is absorbed and filtered by the rigid-flexible vibration damping adjustment device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the rigid-flexible vibration damping and adjustment device of the present invention;

[0019] Figure 2 This is a partial cross-sectional view of the rigid-flexible vibration damping and adjustment device of the present invention.

[0020] Figure 3 This is an exploded view of the rigid-flexible vibration damping and adjustment device of the present invention.

[0021] Figure 4 This is a schematic diagram of the limiting component in the rigid-flexible vibration damping adjustment device of the present invention;

[0022] Figure 5 This is a reference diagram showing the usage state of the rigid-flexible vibration damping adjustment device of the present invention.

[0023] Reference numerals: 1-Upper fixing plate, 2-Lower fixing plate, 3-Adjusting component, 4-Limiting component, 5-Mounting groove, 6-Upper shock-absorbing rubber block, 7-Lower shock-absorbing rubber block;

[0024] 31-Positive and negative lead screws, 32-Upper adjusting plate, 33-Lower adjusting plate;

[0025] 311-Forward lead screw, 312-Reverse lead screw, 313-Fixed shaft, 321-Mounting port, 331-Limiting slot;

[0026] 41-Limiting component; 42-Support shaft;

[0027] 411-tooth structure. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1-5 As shown, the present invention provides a vibration damping and adjustment device 10 that combines rigidity and flexibility, comprising:

[0030] The upper shock absorption assembly includes an upper fixed plate 1 and an upper shock absorption rubber block 6, wherein the upper shock absorption rubber block is disposed on the lower surface of the upper fixed plate;

[0031] The lower damping assembly includes a lower fixed plate 2 and a lower damping rubber block 7, the lower damping rubber block being disposed on the upper surface of the lower fixed plate;

[0032] Adjustment assembly 3, the adjustment assembly includes positive and negative lead screws 31, upper adjustment plate 32 and lower adjustment plate 33, the positive and negative lead screws are arranged vertically and threaded between the upper adjustment plate and the lower adjustment plate;

[0033] Limiting component 4, the limiting component includes a limiting part 41 and a support shaft 42, the support shaft is disposed on the limiting part, the limiting part is provided with an arc surface, and the arc surface is provided with a tooth structure 411;

[0034] The upper adjusting plate is located at the bottom of the upper shock-absorbing rubber block, and the lower adjusting plate is located at the top of the lower shock-absorbing rubber block. The support shaft is rotatably mounted on the upper adjusting plate, and the lower adjusting plate is also provided with a limiting groove 331. The limiting component is arranged above the limiting groove, and the tooth structure is engaged in the limiting groove.

[0035] Specifically, the distance between the upper adjusting plate 1 and the lower adjusting plate 2 is adjusted by using the forward and reverse lead screws 31, thereby achieving height adjustment of the two adjusting plates. This is simple, convenient, and allows for visual adjustment to a suitable height. During the process of increasing the distance between the two adjusting plates, the limiting component 41 remains locked in the limiting slot 331 at the bottom by gravity.

[0036] The adjustment assembly includes a positive and negative lead screw 31. An upper adjusting plate 1 is threadedly connected to the upper end face of the positive and negative lead screw 31. An upper damping rubber block 6 is connected to the upper adjusting plate 1. A lower adjusting plate 2 is threadedly connected to the lower end face of the positive and negative lead screw 31. A lower damping rubber block 7 is connected to the lower end face of the lower adjusting plate 2. When the positive and negative lead screw 31 is adjusted by the threads, the upper damping rubber block 6 and the lower damping rubber block 7 on the end faces can lift or lower the upper adjusting plate 1 and the lower adjusting plate 2, providing a buffering effect for the structure and thus better fixing and stabilizing it.

[0037] By limiting the position of the limiting component 41 in the limiting assembly 4, the adjusting assembly 3 can be adjusted in height by rotating the positive and negative screws 31, making the structure stable and preventing backlash, thus achieving a self-locking function. When adjusting the gap of the limiting component 41, the upper damping rubber block 6 and the lower damping rubber block 7 can have a suitable stroke, thereby providing appropriate load on the shock absorber and allowing the unit's vibration energy to be better absorbed and filtered by the shock absorber.

[0038] In actual use, the upper end face of the adjustment component is connected to an upper shock-absorbing rubber block 6, the upper end face of the upper shock-absorbing rubber block 6 is connected to an upper fixing plate 1, the lower end face of the corresponding adjustment component 3 is connected to a lower shock-absorbing rubber block 7, the lower shock-absorbing rubber block 7 is connected to a lower fixing plate 2, a limit component 4 is provided in the middle of the upper shock-absorbing rubber block 6 and the lower shock-absorbing rubber block 7, the end face of the lower fixing plate 2 is connected to a load-bearing beam 8 in the bus, and the mounting feet 91 of the air conditioning unit 9 are installed on the upper fixing plate 1.

[0039] The upper shock-absorbing rubber block has an installation groove 5 in the middle, and the upper fixing plate 1 has an installation shaft hole (not shown) on the side. The installation shaft hole is fixedly connected to a support shaft 42, which passes through the limiting component 41 and is located in the middle of the installation groove 5.

[0040] Specifically, by passing the support shaft 42 through the mounting shaft hole, the limiting component 41 can be driven to rotate in the mounting groove 5, thereby achieving the installation limitation of the limiting component 41 and making the transmission of the limiting component 41 more stable.

[0041] The forward and reverse lead screws 31 include a fixed shaft 311, with a forward lead screw 312 threadedly connected to the upper end face of the fixed shaft 311 and a reverse lead screw 312 connected to the lower end face of the fixed shaft 311.

[0042] Specifically, by fixing the forward lead screw 312 and the reverse lead screw 312 with the fixed shaft 311, the structure can be adjusted unilaterally upward or downward, making the structure convenient and simple, and allowing the height position of the shock absorber to be adjusted arbitrarily.

[0043] The upper adjusting plate may be provided with an adjusting component and a limiting component at both ends, and the two limiting components are arranged symmetrically. The lower adjusting plate is provided with a limiting slot that cooperates with the limiting component.

[0044] Preferably, the arc surface is distributed along an involute curve around the axis of the support shaft. The tooth structure is distributed along the involute curve on the arc surface. Specifically, the multiple tooth structures 411 of the limiting component 41 form a volute involute gear. When the gap between the upper and lower adjusting plates increases due to the support shaft 42, the limiting component 41 can rotate downwards under its own weight, so that the tooth with the larger shaft diameter on the outer side of the volute naturally fits into the lower adjusting plate and cooperates with the limiting groove on the lower adjusting plate, more firmly pressing against the lowermost gear on the volute involute gear, ensuring the structural stability of the upper and lower adjusting plates.

[0045] With this structure and working principle, after the air conditioning unit is installed, the distance between the upper and lower adjustment plates can be adjusted according to the actual gap height, and the final distance should be slightly larger than the original gap. This ensures that the weight of the unit is borne by the rigid-flexible vibration damping adjustment device, and the vibration energy of the unit is also absorbed and filtered by the rigid-flexible vibration damping adjustment device.

[0046] Specific operating methods include:

[0047] 1. Pre-fix the rigid-flexible vibration damping adjustment device to the mounting feet of the air conditioning unit;

[0048] 2. Use hoisting equipment to place the air conditioning unit in the correct position. Because the rigid-flexible vibration damping adjustment device is highly retracted at this time, the placement position of the air conditioning unit can be easily adjusted during the hoisting process, and the rigid-flexible vibration damping adjustment device does not interfere with the adjustment process.

[0049] 3. Use a wrench to rotate the positive and negative screws on both sides to lower the lower adjusting plate, along with the lower damping rubber and the lower fixing plate, until they contact the load-bearing beam;

[0050] 4. After checking that the mounting plates of all rigid-flexible vibration damping adjustment devices of the air conditioning unit are in contact with the load-bearing beam, make slight adjustments to the positive and negative screws to further increase the distance between the upper and lower vibration damping components of the rigid-flexible vibration damping adjustment devices. This ensures that the air conditioning unit is installed in the correct position and that the weight of the air conditioning unit rests entirely on the rigid-flexible vibration damping adjustment devices.

[0051] 5. During the adjustment of the forward and reverse lead screws, the limiting component will rotate downward due to its own gravity. The lowest tooth structure will contact the limiting slot 331 of the lower adjustment plate, thereby helping to support the weight of the forward and reverse lead screws and ensuring the structural stability of the adjustment component 3.

[0052] 6. After the upper and lower damping rubber blocks are installed, the thickness of the damping rubber blocks is sufficient and effective, and the damping effect is fully intact, ultimately ensuring the realization of the damping effect and the stability of the installation structure.

[0053] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A vibration damping and adjustment device combining rigidity and flexibility, characterized in that, include: The upper shock absorption assembly includes an upper fixed plate and an upper shock absorption rubber block, wherein the upper shock absorption rubber block is disposed on the lower surface of the upper fixed plate; The lower damping assembly includes a lower fixed plate and a lower damping rubber block, wherein the lower damping rubber block is disposed on the upper surface of the lower fixed plate; An adjustment assembly, comprising a positive and negative lead screw, an upper adjustment plate, and a lower adjustment plate, wherein the positive and negative lead screw is arranged vertically and threadedly connected between the upper adjustment plate and the lower adjustment plate; A limiting component, comprising a limiting part and a support shaft, wherein the support shaft is disposed on the limiting part, the limiting part is provided with an arc surface, and the arc surface is provided with a tooth structure; The upper adjusting plate is located at the bottom of the upper shock-absorbing rubber block, and the lower adjusting plate is located at the top of the lower shock-absorbing rubber block. The support shaft is rotatably mounted on the upper adjusting plate, and the lower adjusting plate is also provided with a limit groove. The limiting component is arranged above the limit groove, and the tooth structure is engaged in the limit groove.

2. The rigid-flexible combined vibration damping and adjustment device according to claim 1, characterized in that, The upper shock-absorbing rubber block has a mounting groove in the middle, and the upper fixing plate has a mounting shaft hole on the side. The mounting shaft hole is fixedly connected to the support shaft, and the mounting groove is arranged above the limiting component.

3. The rigid-flexible combined vibration damping and adjustment device according to claim 2, characterized in that, The forward and reverse lead screws include a fixed shaft, with a forward lead screw on the upper end face of the fixed shaft and a reverse lead screw on the lower end face of the fixed shaft. The cross-section of the fixed shaft is a polygonal structure.

4. The rigid-flexible combined vibration damping and adjustment device according to claim 1, characterized in that, The upper adjustment plate is provided with the adjustment component and the limiting component at both ends, respectively.

5. The rigid-flexible combined vibration damping and adjustment device according to claim 4, characterized in that, The two limiting components are arranged symmetrically, and the lower adjusting plate is provided with a limiting slot that cooperates with the limiting components.

6. The rigid-flexible combined vibration damping and adjustment device according to claim 1, characterized in that, The arcuate surface is distributed along an involute line about the axis of the support shaft.

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