Pre-tightening type vibration isolation device and mounting method thereof

Abstract

The invention belongs to the technical field of civil engineering vibration control, and particularly relates to a pre-tightening type vibration isolation device and an installation method thereof. A supporting check block is fixedly arranged on a connecting sleeve, a vibration isolator is located below the supporting check block and is supported on the lower surface of the supporting check block through a height adjusting gasket, the vibration isolator is characterized by comprising an upper shell, an elastic element and a lower shell, an installation through hole is formed in the upper shell of the vibration isolator, and a jacking receding through hole corresponding to the installation through hole is formed in the height adjusting gasket; a pre-tightening connector is formed in the position, corresponding to the mounting through hole, of the lower shell of the vibration isolator. The pre-tightening connector comprises a hanging assembly hole, a threaded connection hole, a threaded connection rod or a threaded connection structure composed of the threaded connection rod and a nut. The jacking operation is more convenient, the applicability is better, the structure is simple, the economical efficiency is good, the cost performance is high, and safety and reliability are achieved; the mounting method is simple, easy to implement, convenient and fast, and can be widely applied to various building floating floor projects or subway floating track bed projects.

Description

Technical Field

[0001] This invention belongs to the field of vibration control technology in civil engineering, and particularly relates to a pre-tightened built-in vibration isolation device and its installation method. Background Technology

[0002] Floating floors are a type of vibration isolation and protection measure for buildings. They isolate the floor from the main building structure using vibration-damping elastic elements. Vibrations generated by vehicles or people moving above the floor are attenuated by these elements before reaching the main building, significantly reducing the vibration energy and its impact on the building structure, thus achieving a good vibration reduction effect. Depending on the vibration-damping elements used, they are mainly divided into two categories: built-in steel spring floating floors and vibration-damping pad floating floors. For example, Chinese Patent Publication No. CN101023218A discloses a vibration isolation device that can be used to construct a built-in steel spring floating floor; Chinese Invention Patent Application Publication No. CN119900384A discloses a vibration-damping floor, which is a typical example of a vibration-damping pad floating floor. Because built-in steel spring floating floors offer superior vibration isolation, they are often chosen in the design of important buildings for key areas to prevent and resolve vibration interference problems. However, existing vibration isolation devices, such as the one disclosed in Chinese Patent Publication No. CN101023218A, require external specialized hydraulic tools during the lifting process. Furthermore, a dedicated lifting block needs to be installed above the support block in the connecting sleeve, resulting in a complex structure that occupies a large amount of height space. This limits its applicability to thicker floors and restricts its application scenarios. In addition, during the lifting process, the hydraulic tools compress the vibration isolation device, requiring the floating components to provide reaction force support. The floating components experience significant local stress, often leading to damage or cracking in practice.

[0003] In conclusion, the market urgently needs a floating floor vibration isolation device that is easy to lift and has better applicability. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a pre-tightening vibration isolation device and its installation method.

[0005] The pre-tightening vibration isolation device of the present invention is implemented as follows: it includes a connecting sleeve, a vibration isolator, and a height adjustment shim. A support block is fixedly installed on the connecting sleeve. The vibration isolator is located below the support block and is supported on the lower surface of the support block by the height adjustment shim. The vibration isolator includes an upper shell, an elastic element, and a lower shell. The upper shell of the vibration isolator is provided with a mounting through hole. The height adjustment shim is provided with a lifting clearance through hole corresponding to the mounting through hole. The lower shell of the vibration isolator is provided with a pre-tightening interface corresponding to the mounting through hole. The pre-tightening interface includes a lower mounting hole, a threaded connection hole, a threaded connecting rod, or a threaded connection structure composed of a threaded connecting rod and a nut.

[0006] To improve system damping, damping material can be installed in the lower housing, with the elastic element partially placed within the damping material; alternatively, a damping cylinder can be installed in the middle of the lower housing, with damping material installed inside the cylinder, and a piston correspondingly installed in the middle of the upper housing, with the piston partially placed within the damping material during operation; or, damping material can be installed in the lower housing of the vibration isolator, with the elastic element partially placed within the damping material, and a piston correspondingly installed on the upper housing, with the piston partially placed within the damping material during operation.

[0007] The elastic element in the preloadable vibration isolation device of this invention includes a helical steel spring, a disc spring, a polyurethane elastomer, a rubber elastomer, or a metal-rubber composite spring. To improve elasticity and provide clearance space, a clearance through-hole is provided in the middle of the polyurethane elastomer, rubber elastomer, or metal-rubber composite spring.

[0008] The vertical outline shape of the mounting hole in the middle of the lower housing is square, rectangular, rhomboid, elliptical, drum-shaped, or triangular.

[0009] To facilitate jacking and installation, anti-torsion structures are correspondingly provided on the support block and the top plate of the vibration isolator. The anti-torsion structure includes the upper shell of the vibration isolator and the support block, and includes the upper shell of the vibration isolator, the height adjustment shim and the corresponding pin hole on the support block and the limiting pin inserted in the pin hole, or the screw hole and height adjustment shim on the upper shell of the vibration isolator, the corresponding limiting through hole on the support block and the fastener that cooperates with the screw hole and the limiting through hole.

[0010] In application, the connecting sleeve is pre-cast integrally with the floating component to be isolated, and then the vibration isolator is supported on the lower surface of the support block of the connecting sleeve by adjusting shims, thereby achieving elastic support for the floating component to be isolated. This invention's pre-tightening vibration isolation device, by adding a pre-tightening interface to the vibration isolator, allows for convenient pre-compression of the vibration isolator as needed, making it very convenient to use and simplifying the product structure. It is applicable to floating track beds or floating floor projects. Furthermore, since the vibration isolator can be directly compressed and pre-tightened using the pre-tightening interface, there is no need for additional auxiliary structures such as lifting blocks on the connecting sleeve. Therefore, it occupies less height space, effectively avoiding the problems of complex structure and large height space occupation of traditional vibration isolation devices. This helps reduce costs and expand the product's applicability, better meeting the vibration isolation needs of floating components such as thinner building floating floors.

[0011] The second objective of this invention is to provide an installation method for the aforementioned preloadable vibration isolation device, comprising the following steps: S1. According to the drawings, precast the connecting sleeve and the floating component into one piece, and place the floating component in place; S2. Place the vibration isolator and the height adjustment shims of the preset thickness for each wheel into the connecting sleeve according to the design requirements; S3. Use the pre-tightening fixture and the pre-tightening interface to compress the vibration isolator, or use the pre-tightening interface to directly compress the vibration isolator until the top surface of the adjusting shim is lower than the bottom surface of the support block. Rotate horizontally to adjust the position of the adjusting shim so that the vertical projection of the adjusting shim and the support block of the connecting sleeve partially overlaps. S4. Release the pre-tightening fixture or pre-tightening interface, the vibration isolator rebounds, and the vibration isolator is supported on the support block of the connecting sleeve by the height adjustment shim, completing the lifting operation of one vibration isolator. S5. Following the above steps, install vibration isolators and height adjustment shims in all connecting sleeves of the floating component to complete the first round of vibration isolator lifting operation, so that the floating component is elastically supported by the vibration isolators. S6. According to the lifting cycle required by the design, repeat the operations from S2 to S5, adding a certain thickness of height adjustment shim for each cycle, until the floating component basically reaches the predetermined design height, and complete the rough adjustment of the height of the floating component. S7. Measure the elevation of the floating component and compare it with the design elevation. Following the operation methods of S2 to S5, add or remove the adjustment shims of the error thickness on the top surface of the vibration isolator with height error until the elevation requirements are fully met. This achieves fine adjustment of the height of the floating component and completes the final installation of the floating component.

[0012] As a special case, for the pre-tightening vibration isolation device of the present invention, which uses a threaded connection structure composed of a screw and nut in the vibration isolator, during the first round of vibration isolator lifting operation, in operation S2, the vibration isolator can be compressed first using the pre-tightening interface, then a height adjustment shim of preset thickness can be placed on the vibration isolator, and then they can be put into the connecting sleeve together. The total height of the compressed vibration isolator plus the height adjustment shim is lower than the height of the bottom surface of the support block. The position of the height adjustment shim is adjusted by horizontal rotation so that the height adjustment shim and the support block of the connecting sleeve partially overlap in the vertical projection. A typical pre-tightening tooling of the present invention includes a hollow hydraulic jack and a pre-tightening connecting rod. The piston of the hollow hydraulic jack is provided with a hollow through hole in the middle. The upper part of the pre-tightening connecting rod is connected to the hollow hydraulic jack. The lower end of the pre-tightening connecting rod is provided with a pre-tightening joint that corresponds to the pre-tightening interface. The pre-tightening joint includes a hook joint, a threaded sleeve joint or a screw joint. The vertical contour shape of the hook joint is square, rectangle, rhombus, ellipse, drum shape or triangle. As another special case, in the first round of vibration isolator lifting operation, during operations S2 and S3, the vibration isolator and the height adjustment shims of the preset thickness for each round can be first installed according to the design requirements. Then, the pre-tightening fixture is engaged with the pre-tightening interface, and the pre-tightening fixture, vibration isolator, and height adjustment shims are then placed together into the connecting sleeve. As a special case, the pre-tightening fixture of this invention includes a torque wrench.

[0013] In summary, the pre-tightening vibration isolation device of the present invention offers more convenient jacking operation, better applicability, simple structure, good economy, high cost performance, and safety and reliability. The pre-tightening fixture of the present invention has a simple structure, convenient operation, and is economical and practical. The installation method of the present invention is simple, easy and quick, and can be widely used in various building floating floor projects or subway floating track bed projects. Attached Figure Description

[0014] Figure 1 This is one of the structural schematic diagrams of the pre-tightening vibration isolation device of the present invention.

[0015] Figure 2 for Figure 1 Top view.

[0016] Figure 3 for Figure 1 This is one of the structural schematic diagrams of the vibration isolator in a pre-tightening vibration isolation device.

[0017] Figure 4 for Figure 3 Top view.

[0018] Figure 5 for Figure 1 This is one of the application diagrams of a pre-tightening vibration isolation device.

[0019] Figure 6 for Figure 1The second schematic diagram shows the application of a pre-tightening vibration isolation device.

[0020] Figure 7 for Figure 1 The third schematic diagram shows the application of a pre-tightening vibration isolation device.

[0021] Figure 8 for Figure 1 The second schematic diagram shows the structure of the vibration isolator in the pre-tightening vibration isolation device.

[0022] Figure 9 This is the second schematic diagram of the pre-tightening vibration isolation device of the present invention.

[0023] Figure 10 for Figure 9 Top view.

[0024] Figure 11 for Figure 9 This is one of the application diagrams of a pre-tightening vibration isolation device.

[0025] Figure 12 for Figure 9 The second schematic diagram shows the application of a pre-tightening vibration isolation device.

[0026] Figure 13 for Figure 9 The third schematic diagram shows the application of a pre-tightening vibration isolation device.

[0027] Figure 14 This is the third schematic diagram of the pre-tightening vibration isolation device of the present invention.

[0028] Figure 15 This is a schematic diagram of the pre-tightening tooling of the present invention.

[0029] Figure 16 This is the fourth schematic diagram of the pre-tightening vibration isolation device of the present invention.

[0030] Figure 17 for Figure 16 Top view.

[0031] Figure 18 for Figure 16 This is one of the application diagrams of a pre-tightening vibration isolation device.

[0032] Figure 19 for Figure 16 The second schematic diagram shows the application of a pre-tightening vibration isolation device.

[0033] Figure 20 for Figure 16 The third schematic diagram shows the application of a pre-tightening vibration isolation device. Detailed Implementation

[0034] Example 1 like Figure 1 and Figure 2 The pre-tightening vibration isolation device of the present invention includes a connecting sleeve 16, a vibration isolator 13, and a height adjustment shim 14. A support block 17 is fixedly mounted on the connecting sleeve 16. The vibration isolator 13 is located below the support block 17 and is supported on the lower surface of the support block 17 by the height adjustment shim 14. Figure 3 and Figure 4 As shown, the vibration isolator 13 includes an upper housing 1, an elastic element 3, and a lower housing 2. The upper housing 1 of the vibration isolator 13 is provided with a mounting through hole 6, and the height adjustment shim 14 is provided with a lifting clearance through hole 24 corresponding to the mounting through hole 6. The lower housing 2 of the vibration isolator 13 is provided with a pre-tightening interface corresponding to the mounting through hole 6. The pre-tightening interface includes a hook assembly hole 7 provided in the middle of the lower housing 2. The elastic element 3 is specifically a helical steel spring. The upper housing 1 and the lower housing 2 are respectively provided with centering tubes 5 for centering and positioning the helical steel spring. To prevent foreign objects from entering the lower housing 2, a rubber sealing ring 4 is provided between the upper housing 1 and the lower housing 2. The vertical contour shape of the hook assembly hole 7 is elliptical.

[0035] When applying it, taking floating floor as an example, such as Figure 6 As shown, the floating component 8 is specifically a floating floor. During the lifting and installation, the pre-tightening fixture of this invention is used. Specifically, the pre-tightening fixture includes a hollow hydraulic jack 10 and a pre-tightening connecting rod 18. The piston of the hollow hydraulic jack 10 has a hollow through hole in the middle. The upper part of the pre-tightening connecting rod 18 is connected to the hollow hydraulic jack. The lower end of the pre-tightening connecting rod has a pre-tightening connector that corresponds to the pre-tightening interface. The pre-tightening connector includes a hook connector 28. The vertical contour shape of the hook connector 28 is also elliptical, corresponding to the hook assembly hole 7. It should be noted that the contour dimension of the hook connector 28 is slightly smaller than the contour dimension of the hook assembly hole 7, so that after the hook connector 28 passes through the hook assembly hole 7, the hook connector 28 can be rotated by about 90° and the pre-tightening connecting rod 18 can be lifted to achieve reliable hooking between the hook connector 28 and the lower shell around the hook assembly hole 7. This is only described in words here. When applying the pre-tightening vibration isolation device and prefabricated fixtures of this invention in floating floor engineering, the specific installation method can be carried out according to the following steps: S1, such as Figure 5 As shown in the drawing, the connecting sleeve 16 and the floating component 8 are precast as one piece, and the floating component 8 is placed in place; S2. Place the vibration isolator and the height adjustment shim 14 with a preset thickness for each wheel into the connecting sleeve 16 according to the design requirements; S3, such as Figure 6As shown, the vibration isolator is compressed by using the pre-tightening fixture and the pre-tightening interface. Specifically, after the hook-on connector 28 is passed through the hook-on assembly hole 7, the hook-on connector 28 is rotated by about 90°, and the hollow hydraulic jack 10 is driven to lift the pre-tightening connecting rod 18, so as to realize the reliable hook-on of the hook-on connector 28 and the lower shell around the hook-on assembly hole 7. The hollow hydraulic jack 10 is continued to be driven to compress the vibration isolator, that is, to compress the elastic element 3, until the top surface of the adjusting shim 14 is lower than the bottom surface of the support block 17. The position of the adjusting shim 14 is adjusted by horizontal rotation so that the adjusting shim 14 and the support block 17 of the connecting sleeve 16 partially overlap in the vertical projection. S4. Release the pre-tightening fixture. Specifically, depressurize the hollow hydraulic jack 10, the vibration isolator rebounds, and the vibration isolator is supported on the support block 17 of the connecting sleeve 16 through the height adjustment shim 14, thus completing the lifting operation of one vibration isolator. S5. Following the above steps, use the pre-tightening fixture to install vibration isolators and height adjustment shims 14 in all connecting sleeves 16 of the floating component 8 to complete the first round of vibration isolator lifting operation, so that the floating component 8 is elastically supported by the vibration isolator. S6. According to the lifting cycle required by the design, repeat the operation from S2 to S5, adding a certain thickness of adjustment shim 14 for each cycle, until the floating component 8 basically reaches the predetermined design height, and complete the rough adjustment of the height of the floating component 8. S7. Measure the elevation of the floating component 8 and compare it with the design elevation. Following the operating methods from S2 to S5, add or remove the adjustment shims 14 with the error thickness on the top surface of the vibration isolator where there is a height error, until the elevation requirements are fully met, thus achieving fine-tuning of the height of the floating component 8. Specifically, as follows... Figure 7 As shown, the final floating component installation is complete.

[0036] This invention relates to a pre-tightening vibration isolation device. By adding a pre-tightening interface to the vibration isolator, the isolator can be conveniently pre-compressed as needed, making it very convenient to use and simplifying the product structure. It is applicable to projects such as floating track beds or floating floors. Furthermore, since the vibration isolator can be directly compressed and pre-tightened using the pre-tightening interface, there is no need for additional auxiliary structures such as lifting blocks on the connecting sleeve. Therefore, it occupies less height space, effectively avoiding the problems of complex structure and large height space occupation of traditional vibration isolation devices. This helps reduce costs and expand the product's applicability, better meeting the vibration isolation needs of floating components such as thinner building floating floors. Thirdly, this invention's pre-tightening vibration isolation device, by adding a pre-tightening interface to the vibration isolator body, allows for convenient pre-compression of the isolator as needed, making it very convenient to use and simplifying the structure of floating components.

[0037] It is particularly important to note that, compared to existing technologies, the greatest advantage of using the pre-tightening vibration isolation device, pre-tightening fixture, and installation method of this invention for jacking up and installing floating components is that, during jacking up and installation, existing technologies require the floating component to provide reaction force support for compressing the vibration isolator. However, this invention utilizes the pre-tightening fixture in conjunction with the pre-tightening interface in the pre-tightening vibration isolation device to directly compress the vibration isolator. Throughout the process, it does not require the floating component to provide reaction force. Therefore, the stress condition of the floating component is greatly improved, effectively preventing damage such as breakage and cracking caused by excessive local stress during jacking up and installation, and significantly extending the service life of the floating component. This invention's pre-tightening vibration isolation device, pre-tightening fixture, and installation method represent a complete change in the technical principle of jacking up and installation, effectively protecting the floating component from damage during the jacking up and installation process, making it safer and more reliable.

[0038] In summary, the pre-tightening vibration isolation device of the present invention offers more convenient jacking operation, better applicability, simple structure, good economy, high cost performance, and safety and reliability. The pre-tightening fixture of the present invention has a simple structure, convenient operation, and is economical and practical. The installation method of the present invention is simple, easy and quick, and can be widely used in various building floating floor projects or subway floating track bed projects.

[0039] It should be noted that in this example, the vertical contour shape of the mounting hole in the middle of the lower housing is elliptical. In practical applications, the vertical contour shape of the mounting hole in the middle of the lower housing can also be square, rectangular, rhomboid, drum-shaped, or triangular. In application, it is only necessary to provide a mounting connector with the corresponding contour shape at the lower end of the mounting rod to mate with it. Furthermore, the specific type of elastic element can also vary. In addition to the helical steel spring already mentioned, it can also be a disc spring, polyurethane elastomer, rubber elastomer, or metal-rubber composite spring. Of course, if necessary, a clearance through hole can be provided in the middle of the polyurethane elastomer, rubber elastomer, or metal-rubber composite spring to facilitate the passage of the pre-tensioning connecting rod in the pre-tensioning fixture. Additionally, it should be noted that... Figures 1-4 The pre-tightening vibration isolation device of the present invention does not include a damping structure. If necessary, it needs to be used in parallel with a damping element. Preferably, such as... Figure 8 As shown, a damping material 15 can be installed in the cavity formed by the lower shell 2 and the centering tube 5. The elastic element 3 is partially placed within the damping material 15. Specifically, the damping material 15 is a solid damping material. When the elastic element 3 is subjected to repeated deformation due to vibration, it will compress and shear the damping material 15 to dissipate energy, thereby effectively consuming vibration energy, further reducing vibration response, and achieving good vibration isolation and reduction effects. These technical solutions can all achieve good technical effects and are all simple variations based on the technical principles of this invention, and are all within the protection scope claimed by this invention.

[0040] Example 2 like Figure 9 and Figure 10 The pre-tightening vibration isolation device of the present invention is shown, and Figure 1 The difference in the technical solution shown is that a damping material 15 is provided in the cavity formed by the lower housing 2 and the centering tube 5, and the elastic element 3 is partially placed in the damping material 15. The damping material 15 is specifically a solid damping material; the pre-tightening interface provided in the lower housing 2 of the vibration isolator is specifically a threaded connection hole 21.

[0041] When applying this method, we will still take floating floor as an example, such as... Figure 12 As shown, the floating component 8 is specifically a floating floor. During jacking installation, the pre-tightening fixture of this invention is used. Specifically, the pre-tightening fixture includes a hollow hydraulic jack 10 and a pre-tightening connecting rod 18. The piston of the hollow hydraulic jack 10 has a hollow through hole in the middle. The upper part of the pre-tightening connecting rod 18 is connected to the hollow hydraulic jack, and the lower end of the pre-tightening connecting rod 18 has a pre-tightening connector that corresponds to the pre-tightening interface. The pre-tightening connector is specifically a screw connector. The installation method of the pre-tightening vibration isolation device of this invention described in this example is as follows: S1, such as Figure 11 As shown in the drawing, the connecting sleeve 16 and the floating component 8 are precast as one piece, and the floating component 8 is placed in place; S2. According to the design requirements, combine the vibration isolator and the height adjustment shim 14 with a preset thickness for each wheel together, and match the pre-tightening fixture with the pre-tightening interface. Specifically, assemble and connect the screw joint in the pre-tightening connecting rod 18, which serves as the pre-tightening joint, with the threaded connection hole. Then, put the pre-tightening fixture, vibration isolator, and height adjustment shim 14 into the connecting sleeve 16. S3, such as Figure 12 As shown, the hollow hydraulic jack 10 is driven to compress the vibration isolator, i.e., the elastic element 3, until the top surface of the adjusting shim 14 is lower than the bottom surface of the support block 17. The position of the adjusting shim 14 is adjusted by horizontal rotation so that the adjusting shim 14 and the support block 17 of the connecting sleeve 16 partially overlap in the vertical projection. S4. Release the pre-tightening fixture. Specifically, depressurize the hollow hydraulic jack 10, the vibration isolator rebounds, and the vibration isolator is supported on the support block 17 of the connecting sleeve 16 through the height adjustment shim 14, thus completing the lifting operation of one vibration isolator. S5. Following the above steps, use the pre-tightening fixture to install vibration isolators and height adjustment shims 14 in all connecting sleeves 16 of the floating component 8 to complete the first round of vibration isolator lifting operation, so that the floating component 8 is elastically supported by the vibration isolator. S6. According to the lifting cycle required by the design, repeat the operation from S2 to S5, adding a certain thickness of adjustment shim 14 for each cycle, until the floating component 8 basically reaches the predetermined design height, and complete the rough adjustment of the height of the floating component 8. S7. Measure the elevation of the floating component 8 and compare it with the design elevation. Following the operating methods from S2 to S5, add or remove the adjustment shims 14 with the error thickness on the top surface of the vibration isolator where there is a height error, until the elevation requirements are fully met, thus achieving fine-tuning of the height of the floating component 8. Specifically, as follows... Figure 13 As shown, after the final floating component is installed, in order to prevent foreign objects from entering the connecting sleeve 16, after all the lifting installation is completed, an end cap 19 can be added to the upper part of the support block 17.

[0042] Compared with Example 1 Figures 1-4 Compared to the pre-tightening vibration isolation device shown, the pre-tightening vibration isolation device of the present invention described in this example has added damping material inside the lower housing, resulting in better vibration reduction and energy dissipation. Furthermore, the pre-tightening interface on the lower housing is specifically a threaded connection, simplifying the structure. In addition, compared to the pre-tightening fixture in Embodiment 1, the pre-tightening joint at the lower end of the pre-tightening connecting rod in the pre-tightening fixture of the present invention described in this example is specifically a screw joint, and the connection between the pre-tightening interface and the pre-tightening joint is a threaded connection, which is easier to implement and simpler to operate, improving construction efficiency and ensuring safety and reliability. Moreover, compared to Embodiment 1, the installation method of the present invention described in this example, by pre-assembling the vibration isolator and height adjustment shims together using the pre-tightening fixture, makes it more convenient and faster to insert the entire assembly into the connecting sleeve, further improving operational efficiency.

[0043] It should be noted that in this example and in Embodiment 1, the lifting clearance through-hole size of the height adjustment shim is larger than the outline size of the hollow hydraulic jack in the pre-tightening fixture. In this case, the hollow hydraulic jack can directly press against the surface of the upper housing of the vibration isolator. When lifting in subsequent cycles, the height adjustment shim of the set thickness can be directly placed into the connecting sleeve while wearing the hollow hydraulic jack. In practice, the lifting clearance through-hole size of the height adjustment shim may also be smaller than the outline size of the hollow hydraulic jack in the pre-tightening fixture. In this case, the hollow hydraulic jack can only press against the surface of the height adjustment shim. In this case, when lifting in subsequent cycles, the pre-tightening fixture and the pre-tightening interface must be separated. After adding a height adjustment shim of the set thickness on the vibration isolator, the pre-tightening fixture and the pre-tightening interface can be reconnected. These specific operations are all specific meanings contained in S3 of the installation method of this invention, which are explained here together.

[0044] Example 3 like Figure 14The pre-tightening vibration isolation device of the present invention differs from the pre-tightening vibration isolation device described in Embodiment 2 in that a damping cylinder is provided on the lower housing 2, and a damping material 15 is provided in the damping cylinder. A piston 20 is provided in the middle of the upper housing 1. During operation, the piston 20 is partially placed in the damping material 15, which is specifically a liquid damping material. In addition, the pre-tightening interface provided on the lower housing 2 is specifically a threaded connecting rod 22. Figure 15 As shown, corresponding to the pre-tightening interface, the pre-tightening connector provided at the lower end of the pre-tightening connecting rod 18 in the pre-tightening fixture of the present invention is specifically a threaded sleeve connector 25.

[0045] Similar to Embodiment 2, when the pre-tightening vibration isolation device of the present invention is connected with the pre-tightening fixture described in this example, the threaded connection is achieved through the threaded connecting rod 22 and the threaded sleeve joint 25, ensuring safety and reliability. The advantages and installation method of the pre-tightening vibration isolation device and pre-tightening fixture described in this example are basically the same as those in Embodiment 2, and will not be repeated here. It should be noted that, because a piston is added to the upper housing of the pre-tightening vibration isolation device described in this example, the effective working area in contact with the damping material can be effectively increased, thus resulting in a more significant damping energy dissipation effect.

[0046] Example 4 like Figure 16 and Figure 17 The pre-tightening vibration isolation device of the present invention differs from that of Embodiment 3 in that the pre-tightening interface provided on the lower housing 2 of the vibration isolator is specifically a threaded connection structure composed of a threaded connecting rod 22 and a nut 23; in addition, a damping cylinder is provided in the middle of the lower housing 2 of the vibration isolator, and a damping material 15 is provided in the damping cylinder, and a piston 20 is correspondingly provided on the upper housing 1, and the piston 20 is partially placed in the damping material 15 during operation; furthermore, an anti-torsion structure is correspondingly provided on the upper housing 1 and the support block 17 of the vibration isolator, and the anti-torsion structure includes pin holes correspondingly provided on the upper housing 1, the height adjustment shim 14 and the support block 17 of the vibration isolator, and a limiting pin 26 inserted in the pin hole.

[0047] When applying this method, we will still take floating floor as an example, such as... Figure 19 As shown, the floating component 8 is specifically a floating floor. During jacking installation, the pre-tightening fixture of this invention is used; specifically, the pre-tightening fixture includes a torque wrench 27. The installation method of the pre-tightening vibration isolation device of this invention described in this example can be operated according to the following steps: S1, such as Figure 18 As shown in the drawing, the connecting sleeve 16 and the floating component 8 are precast as one piece, and the floating component 8 is placed in place; S2. First, use the pre-tightening interface to compress the vibration isolator. Specifically, use the threaded connecting rod 22 and nut 23 to compress the vibration isolator. Then, place the height adjustment shim 14 of the preset thickness on the vibration isolator and put them into the connecting sleeve 16 together. The total height of the compressed vibration isolator plus the height adjustment shim 14 is lower than the height of the bottom surface of the support block 17. S3. Horizontally rotate and adjust the position of the height adjustment shim 14 so that the height adjustment shim 14 and the support block 17 of the connecting sleeve 16 partially overlap in the vertical projection. S4, such as Figure 19 As shown, the anti-torsion device is assembled. Specifically, the limiting pin 26 is inserted into the corresponding pin holes on the upper housing 1, the height adjustment shim 14 and the support block 17 of the vibration isolator. Then, the pre-tightening interface is released using the pre-tightening fixture. Specifically, the nut 23 is loosened, the vibration isolator springs back, and the vibration isolator is supported on the support block 17 of the connecting sleeve 16 by the height adjustment shim 14, thus completing the lifting operation of one vibration isolator. S5. Following the above steps, use the pre-tightening fixture to install vibration isolators and height adjustment shims 14 in all connecting sleeves 16 of the floating component 8 to complete the first round of vibration isolator lifting operation, so that the floating component 8 is elastically supported by the vibration isolator. S6. According to the lifting cycle required by the design, repeat the operation from S2 to S5, adding a certain thickness of adjustment shim 14 for each cycle, until the floating component 8 basically reaches the predetermined design height, and complete the rough adjustment of the height of the floating component 8. S7. Measure the elevation of the floating component 8 and compare it with the design elevation. Following the operating methods from S2 to S5, add or remove the adjustment shims 14 with the error thickness on the top surface of the vibration isolator where there is a height error, until the elevation requirements are fully met, thus achieving fine-tuning of the height of the floating component 8. Specifically, as follows... Figure 20 As shown, the final floating component installation is complete.

[0048] Compared with Embodiment 3, in the pre-tightening vibration isolation device of the present invention described in this example, the vibration isolator can be compressed in advance using the pre-tightening interface and used directly during the installation process, eliminating a step of on-site compression, which helps to simplify the on-site construction process, improve installation efficiency, and reduce construction difficulty. In addition, the pre-tightening tooling described in this example is simple to operate, efficient and practical. Furthermore, the installation method described in this example can realize the pre-compression of the vibration isolator in the factory, reduce on-site construction steps, make the operation process simpler, and improve installation efficiency.

[0049] Because the pre-tightening vibration isolation device of this invention incorporates an anti-torsion structure, the vibration isolator and height adjustment shims will not rotate relative to the connecting sleeve when the pre-tightening interface is released using the pre-tightening fixture. Of course, based on the technical principle of this example, the specific structure of the anti-torsion structure can vary. Besides the pin hole and limit pin mentioned in this example, other options include screw holes and height adjustment shims on the upper housing of the vibration isolator, corresponding limit through holes on the support block, and fasteners that mate with the screw holes and limit through holes. All of these can achieve excellent technical results. These are described in words only and will not be illustrated in detail here; all are within the scope of protection claimed by this invention.

[0050] The embodiments in this invention are only for better illustrating the technical solutions of this invention and should not be regarded as limitations on this invention. The technical features in many of the embodiments can also be used interchangeably. Based on the technical principles of this invention, those skilled in the art can recombine the technical solutions described in the above embodiments or use similar technologies to simply replace some of the components. As long as they are based on the technical principles of this invention, they are all within the protection scope claimed by this invention.

Claims

1. A pre-tightening vibration isolation device, comprising a connecting sleeve, a vibration isolator, and a height adjustment shim, wherein a support block is fixedly disposed on the connecting sleeve, and the vibration isolator is located below the support block and supported on the lower surface of the support block by the height adjustment shim, characterized in that... The vibration isolator includes an upper housing, an elastic element, and a lower housing. The upper housing of the vibration isolator is provided with a mounting through hole, and the height adjustment shim is provided with a lifting clearance through hole corresponding to the mounting through hole. The lower housing of the vibration isolator is provided with a pre-tightening interface corresponding to the mounting through hole. The pre-tightening interface includes a hook assembly hole, a threaded connection hole, a threaded connecting rod, or a threaded connection structure consisting of a threaded connecting rod and a nut.

2. The pre-tightening vibration isolation device as described in claim 1, characterized in that, The lower housing of the vibration isolator is provided with damping material, and the elastic element is partially placed in the damping material; or the lower housing of the vibration isolator is provided with damping material, the elastic element is partially placed in the damping material, and a piston is correspondingly provided on the upper housing, with the piston partially placed in the damping material during operation.

3. The pre-tightening vibration isolation device as described in claim 1, characterized in that, A damping cylinder is installed in the middle of the lower housing of the vibration isolator, and damping material is installed in the damping cylinder. A piston is installed on the upper housing accordingly, and the piston is partially placed in the damping material during operation.

4. The pre-tightening vibration isolation device as described in claim 1, characterized in that, The elastic element includes a helical steel spring, a disc spring, a polyurethane elastomer, a rubber elastomer, or a metal-rubber composite spring.

5. The pre-tightening vibration isolation device as described in claim 4, characterized in that, The polyurethane elastomer, rubber elastomer, and metal-rubber composite spring are provided with clearance through holes in the middle corresponding to the mounting through holes and pre-tightening interfaces.

6. The pre-tightening vibration isolation device as described in claim 1, characterized in that, The vertical outline shape of the mounting hole is square, rectangle, rhombus, ellipse, drum-shaped, or triangular.

7. The pre-tightening vibration isolation device as described in claim 1, characterized in that, The upper housing of the vibration isolator and the support block are respectively provided with anti-torsion structures. The anti-torsion structure includes the upper housing of the vibration isolator, the height adjustment shim and the support block respectively provided with pin holes and limit pins inserted in the pin holes, or the upper housing of the vibration isolator and the height adjustment shim, the support block respectively provided with limit through holes and fasteners that cooperate with the screw holes and limit through holes.

8. A method for installing a preloadable vibration isolation device, using the preloadable vibration isolation device as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. According to the drawings, precast the connecting sleeve and the floating component into one piece, and place the floating component in place; S2. Place the vibration isolator and the height adjustment shims of the preset thickness for each wheel into the connecting sleeve according to the design requirements; S3. Use the pre-tightening fixture and the pre-tightening interface to compress the vibration isolator, or use the pre-tightening interface to directly compress the vibration isolator until the top surface of the adjusting shim is lower than the bottom surface of the support block. Rotate horizontally to adjust the position of the adjusting shim so that the vertical projection of the adjusting shim and the support block of the connecting sleeve partially overlaps. S4. Release the pre-tightening fixture or pre-tightening interface, the vibration isolator rebounds, and the vibration isolator is supported on the support block of the connecting sleeve by the height adjustment shim, completing the lifting operation of one vibration isolator. S5. Following the above steps, install vibration isolators and height adjustment shims in all connecting sleeves of the floating component to complete the first round of vibration isolator lifting operation, so that the floating component is elastically supported by the vibration isolators. S6. According to the lifting cycle required by the design, repeat the operations from S2 to S5, adding a certain thickness of height adjustment shim for each cycle, until the floating component basically reaches the predetermined design height, and complete the rough adjustment of the height of the floating component. S7. Measure the elevation of the floating component and compare it with the design elevation. Following the operation methods of S2 to S5, add or remove the adjustment shims of the error thickness on the top surface of the vibration isolator with height error until the elevation requirements are fully met. This achieves fine adjustment of the height of the floating component and completes the final installation of the floating component.

9. The installation method of the pre-tightening vibration isolation device as described in claim 8, characterized in that, During the lifting operation of the first-round vibration isolator, in operation S2, the vibration isolator is first compressed using the pre-tightening interface, then a height adjustment shim of preset thickness is placed on the vibration isolator, and then they are put into the connecting sleeve together. The total height of the compressed vibration isolator plus the height adjustment shim is lower than the height of the bottom surface of the support block. The position of the height adjustment shim is adjusted by horizontal rotation so that the height adjustment shim and the support block of the connecting sleeve partially overlap in the vertical projection.

10. The installation method of the pre-tightening vibration isolation device as described in claim 8 or 9, characterized in that, The pre-tightening fixture includes a hollow hydraulic jack and a pre-tightening connecting rod. The piston of the hollow hydraulic jack has a hollow through hole in the middle. The upper part of the pre-tightening connecting rod is connected to the hollow hydraulic jack. The lower end of the pre-tightening connecting rod has a pre-tightening connector that corresponds to the pre-tightening interface. The pre-tightening connector includes a hook connector, a threaded sleeve connector, or a screw connector. The vertical profile of the hook connector is square, rectangular, rhomboid, elliptical, drum-shaped, or triangular.

11. The installation method of the pre-tightening vibration isolation device as described in claim 8, characterized in that, During the lifting operation of the first round of vibration isolators, in operations S2 and S3, the vibration isolators and the height adjustment shims of the preset thickness for each round are first placed according to the design requirements. Then, the pre-tightening fixture is matched with the pre-tightening interface, and then the pre-tightening fixture, vibration isolators and height adjustment shims are placed into the connecting sleeve together.

12. The installation method of the pre-tightening vibration isolation device as described in claim 11, characterized in that, The pre-tightening fixture includes a torque wrench.

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