Three-way vibration isolation bistable metal damping pipe clamp and using method thereof

Abstract

The three-way vibration isolation bistable metal damping pipe clamp comprises a pipe clamp body, the pipe clamp body is installed outside a pipeline, a plurality of damping assemblies are evenly distributed on the inner wall of the pipe clamp body in the circumferential direction, an annular clamping shoulder is arranged on the outer wall of the pipeline, and clamping grooves are formed in the positions, corresponding to the clamping shoulder, of the damping assemblies; the damping assembly comprises M-shaped metal rubber, the two corners of the M-shaped metal rubber are flat corners, the clamping groove is formed between the two corners, the two foot ends of the M-shaped metal rubber are installed on the inner wall of the pipe clamp, and the two corners of the M-shaped metal rubber abut against the outer wall of the pipeline. The pipe clamp is reasonable in design, local stress concentration caused by uneven pre-tightening force of a traditional pipe clamp is avoided, meanwhile, self-adaptive steady-state switching according to the temperature is achieved, and the problem that a traditional structure is unstable or insufficient in constraint at the high temperature is solved.

Description

Technical Field

[0001] This invention relates to a three-dimensional vibration isolation bistable metal damping clamp and its method of use. Background Technology

[0002] Pipelines are widely used in petrochemical, power, metallurgical, and aerospace industries. When transporting high-temperature, high-pressure, or pulsating working fluids, they are subjected to various loads such as equipment operating vibration, fluid pulsation, thermal expansion, and external impacts, making them prone to triaxial vibration. Long-term vibration can lead to pipeline fatigue damage, loosening of connections, and system failure. Therefore, pipe clamps are needed to support, limit, and isolate pipelines from vibration. Currently, common technical solutions in pipeline support and vibration reduction mainly include the following categories: (1) Rigid metal pipe clamps: Rigid clamps or brackets made of metal materials (such as cast iron and steel plates) directly clamp the pipe with bolts and transmit loads and vibrations through a rigid structure. (2) Pipe clamps with elastic gaskets / rubber pads: Rubber or elastic gaskets are set between the rigid metal clamp and the pipe to reduce the transmitted vibration and impact and provide a certain vibration isolation effect. (3) Vibration damping brackets with springs or buffer elements: Helical springs, rubber damping elements or airbags are integrated into the support structure to achieve a large buffer displacement and are used to withstand impact loads or thermal displacement. (4) Metal rubber damping elements: Porous / honeycomb / corrugated structures are formed using metal wires or metal strips as elastic and damping materials for support or sealing in high temperature or special environments.

[0003] The above technologies are widely used in various industrial scenarios (building water supply and drainage, petrochemical high-temperature pipelines, HVAC, power plant pipelines, etc.), but they also have some limitations and defects, especially in terms of applicability under high temperature and complex impact conditions.

[0004] (1) Single directionality: Many existing rubber pads or elastic supports only have good performance in one direction, either radial or radial + axial, but it is difficult to provide equivalent damping and elastic response in the three orthogonal directions of X, Y (radial inside and outside) and Z (axial) in the same structure. Unidirectional or two-dimensional vibration reduction is prone to failure or force concentration under complex working conditions (such as lateral vibration superimposed on axial impact).

[0005] (2) Poor high temperature adaptability: Traditional organic rubber materials will age, flow or lose elasticity under high temperature conditions (such as above 200°C), resulting in long-term performance degradation. Many multi-level buffer structures do not take into account the thermal expansion, thermal conductivity and thermal fatigue of materials at high temperatures, leading to sealing or fit failure.

[0006] (3) Conflict between impact / overload protection and normal vibration isolation design: Rigid protective components or hard limiters can protect the pipeline during impact, but will directly transmit vibration to the pipeline under normal low-amplitude vibration, reducing the vibration isolation effect. Conversely, flexible gaskets are prone to instantaneous instability or damage when subjected to large impacts, and cannot provide effective energy absorption and limit protection.

[0007] (4) Lack of operating condition switching capability: A few solutions using multi-component combinations exist, but they are usually complex in structure, large in size, or require manual / mechanical switching, and lack the ability to automatically switch between "low load - high load" (i.e., cannot automatically switch to high stiffness / high buffer mode without damaging itself). Existing structures are difficult to achieve a seamless switch from repeatable flexible vibration absorption to "rigid buffer" without sacrificing long-term durability.

[0008] (5) Damping and elastic stiffness are not adjustable or are inconvenient to adjust: When it is necessary to adjust the response for different working conditions (e.g., different pipe diameters, different fluid temperatures, or different vibration spectra), the replacement / adjustment of traditional rubber parts or metal springs is cumbersome and the on-site maintenance cost is high. Many designs do not reserve space or structure for easy replacement or adjustment of buffer components (such as springs). (6) Thermo-coupling performance is not fully considered: Pipe clamp structures will have obvious heat conduction, thermal stress and thermal expansion problems under high temperature conditions. If the vibration damping element is in direct contact with the pipe or the heat conduction path is not designed properly, it will reduce the life of the vibration damping element and affect the thermal insulation / insulation performance. Most existing designs do not take into account the balance between "thermal isolation" and "mechanical vibration isolation" in the structure.

[0009] (7) Reliability and maintainability issues: In some existing solutions, vibration damping components are prone to fatigue, breakage, or permanent deformation, and the replacement cycle is short. Maintenance requires the disassembly of a large number of pipe clamps or supports, resulting in high downtime costs, which is not conducive to industrial systems that operate continuously. Summary of the Invention

[0010] In view of this, the purpose of this invention is to overcome the shortcomings of the prior art and provide a three-dimensional vibration isolation bistable metal damping pipe clamp and its usage method, which avoids the local stress concentration caused by uneven preload of traditional pipe clamps, and realizes steady-state switching according to temperature, thus avoiding the problems of instability or insufficient restraint of traditional structures at high temperatures.

[0011] The present invention is implemented by the following scheme: a three-dimensional vibration isolation bistable metal damping pipe clamp: including a pipe clamp, the pipe clamp is installed outside a pipe, a plurality of damping components are evenly distributed on the inner wall of the pipe clamp, an annular shoulder is provided on the outer wall of the pipe, and a groove is provided on the damping component corresponding to the shoulder.

[0012] Furthermore, the damping component includes an M-shaped metal rubber with two flat corners, a slot disposed between the two corners, two feet of the M-shaped metal rubber mounted on the inner wall of the pipe clamp, and two corners of the M-shaped metal rubber abutting against the outer wall of the pipe.

[0013] Furthermore, the lower end face of the groove bottom on the M-shaped metal rubber is connected to the inner wall of the pipe clamp by a spring.

[0014] Furthermore, the two corners of the M-shaped metal rubber are arranged along the axial direction of the pipe.

[0015] Furthermore, an annular T-groove is formed along the circumference on the inner wall of the pipe clamp, and arc-shaped blocks that mate with the T-groove are connected to the two ends of the M-shaped metal rubber. The pipe clamp is provided with several bolt limiting components that penetrate the T-groove and limit the arc-shaped blocks of the M-shaped metal rubber.

[0016] Furthermore, the pipe clamp includes a movable half-pipe clamp and a fixed half-pipe clamp, which are connected by bolts, and the fixed half-pipe clamp is fixed to a fixed base.

[0017] Furthermore, both the movable half-pipe clamp and the fixed half-pipe clamp include a semi-circular pipe clamp body. The two ends of the semi-circular pipe clamp body are provided with outward bending plates. The bending plates at both ends of the movable half-pipe clamp are fixedly connected to the bending plates at both ends of the corresponding fixed half-pipe clamp by bolts.

[0018] Furthermore, the fixed half-pipe clamp and the fixed seat are connected by a cross rib plate.

[0019] Furthermore, the T-slot is divided into two half-slots corresponding to the movable half-pipe clamp and the fixed half-pipe clamp.

[0020] A working method for a three-dimensional vibration isolation bistable metal damping clamp, including two steady-state operating states: (1) First steady state: cold state and low load: when the pipeline is in normal temperature or low load condition, the spring and the M-type metal rubber are in contact but have not entered the compression range. The spring is in an unloaded state and therefore does not provide effective elastic force. At this time, the two corners of each M-type metal rubber are subjected to radial load generated by the radial vibration of the pipeline, which generates elastic-plastic deformation and frictional energy dissipation, thereby providing support and damping for lateral vibration. At the same time, the groove of the M-type metal rubber and the shoulder outside the pipeline form an axial limit. The groove is subjected to axial vibration of the shoulder, which generates compression deformation to achieve axial damping. It is suitable for daily vibration conditions. (2) Second steady state: hot state and high load: When the pipeline enters the high temperature working condition, the thermal expansion of the pipeline causes axial and radial thermal displacement or under high load conditions, the two corners of the M-type metal rubber are crushed or compressed to the limit, and its inner cavity begins to squeeze towards the spring. The spring passively participates in the force and officially enters the working range. At this time, the spring and the remaining rubber jointly bear the load, forming a coupling structure of spring stiffness + metal rubber damping, which improves the vibration and impact protection capability and realizes the steady state switching according to temperature.

[0021] Compared with the prior art, the present invention has the following beneficial effects: (1) Strong three-dimensional vibration isolation capability over a wide temperature range: The device employs a parallel structure of metal rubber and springs to achieve three-dimensional vibration isolation in the X, Y radial and Z axes; and through automatic switching between bistable states (cold / low load and high / high load), the device can maintain stable vibration isolation performance across the entire operating range from room temperature to high temperature and from light load to heavy load.

[0022] (2) Performance does not degrade under high temperature conditions: Metal rubber has a metal-based porous structure, unaffected by the aging, carbonization, or molecular chain fatigue of traditional rubber. The M-shaped cavity can form a local thermal insulation and slow-release zone at high temperatures, significantly reducing the direct thermal coupling strength between the metal rubber and the clamp body, giving the device excellent thermal isolation performance. Its contact friction energy dissipation capacity is actually enhanced at high temperatures, allowing this product to operate stably for extended periods in high-temperature environments (e.g., 500°C).

[0023] (3) High damping and strong energy absorption capacity: The metal rubber interior can provide a high loss factor through friction, slippage and micro-plastic deformation between its porous elastic structural units; under high load conditions, it further enters the compaction stage, and the energy absorption efficiency is significantly improved, which can play a significant role in attenuating impact loads, pulse loads and complex random vibrations.

[0024] (4) Compact structure and strong adaptability: It adopts a circumferential segmented encapsulation design, which can be flexibly configured according to pipeline size, layout, or space constraints. The structure can be installed modularly, making maintenance convenient and adaptable to a variety of complex equipment.

[0025] (5) High durability and long lifespan: Metal rubber has no fatigue failure interface, no material aging problem, and a cycle life of up to millions; it still has excellent stability under hot and high-frequency vibration environments, which is far superior to traditional rubber vibration isolators.

[0026] (6) Can withstand high loads without becoming unstable: The spring provides basic support stiffness, while the metal rubber provides nonlinear damping and energy absorption, ensuring that the system does not sink, become unstable, or experience sudden stiffness changes under large loads (large displacement, impact, thermal expansion force), effectively protecting the structural safety of the equipment. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the main structure of the present invention; Figure 3 for Figure 2 Schematic diagram of the AA section structure; Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of the middle BB; Figure 5 This is a schematic diagram of the M-type metal-rubber structure of the present invention.

[0028] In the diagram: 1-Pipe clamp; 2-Pipe; 3-Damping assembly; 4-Shoulder; 5-Slot; 6-M-type metal rubber; 7-Corner of M-type metal rubber; 8-Feet of M-type metal rubber; 9-Spring; 10-T-slot; 11-Arc block; 12-Bolt limiter; 13-Modible half-pipe clamp; 14-Fixed half-pipe clamp; 15-Semi-circular pipe clamp; 16-Bending plate; 17-Cross rib plate; 18-Half-groove; 19-Limit bolt; 21-Fixed seat. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] like Figure 1-5As shown, a three-dimensional vibration isolation bistable metal damping pipe clamp includes a pipe clamp 1, which is installed on the outside of a pipe 2. Several damping components 3 are evenly distributed around the inner wall of the pipe clamp. An annular shoulder 4 is provided on the outer wall of the pipe. A groove 5 is provided on each damping component corresponding to the shoulder. The grooves on the various damping components form an annular groove, and the annular shoulder is engaged within this annular groove. Three-dimensional vibration isolation of the pipe is achieved through the various damping components. More specifically, the damping component includes an M-shaped metal rubber 6, the two corners 7 of which are flat angles. The groove is located between the two corners. The two ends 8 of the M-shaped metal rubber are installed on the inner wall of the pipe clamp. The two corners of the M-shaped metal rubber abut against the outer wall of the pipe. The lower end face of the groove bottom on the M-shaped metal rubber is connected to the inner wall of the pipe clamp by a spring 9. Of course, the lower end face of the groove bottom and the inner wall of the pipe clamp can be provided with corresponding limit posts. The two ends of the spring are sleeved on the corresponding limit posts. At the same time, the two corners of the M-shaped metal rubber are arranged along the axial direction of the pipe, that is, the line connecting the two corners of the M-shaped metal rubber is along the axial direction of the pipe.

[0033] In this embodiment, in order to install the M-shaped metal rubber, an annular T-groove 10 is formed on the inner wall of the pipe clamp along the circumference. The two ends of the M-shaped metal rubber are connected to arc-shaped blocks 11 that cooperate with the T-groove. At the same time, the pipe clamp is provided with several bolt limiting members 12 that penetrate the T-groove and limit the arc-shaped blocks of the M-shaped metal rubber. Meanwhile, the bottom of the T-groove is connected to the lower end face of the corresponding card slot bottom by a spring. The bottom of the T-groove may be provided with a limiting post corresponding to the spring.

[0034] In this embodiment, to achieve pipe clamping, the pipe clamp includes a movable half-pipe clamp 13 and a fixed half-pipe clamp 14. The movable half-pipe clamp and the fixed half-pipe clamp are connected by bolts. The fixed half-pipe clamp is fixed on a fixed base 21. Specifically, both the movable half-pipe clamp and the fixed half-pipe clamp include a semi-circular pipe clamp body 15. Outward bending plates 16 are provided on both ends of the semi-circular pipe clamp body. The bending plates at both ends of the movable half-pipe clamp are fixedly connected to the bending plates at both ends of the corresponding fixed half-pipe clamp by bolts. The fixed half-pipe clamp is connected to the fixed base by a cross rib plate 17. The connection method can be welding.

[0035] In this embodiment, the T-slot is divided into two half-slots 18 corresponding to the movable half-pipe clamp and the fixed half-pipe clamp. Bolt limiting components are horizontally placed inside both ends of the half-slot. Specifically, the bolt limiting components include limiting bolts 19 and limiting nuts. The movable half-pipe clamp and the fixed half-pipe clamp have through holes that pass through the half-slot corresponding to the limiting bolts. The limiting bolts pass through the half-slots through the through holes and are locked by the limiting nuts. The threaded section of the limiting bolts is horizontally placed inside both ends of the half-slot to prevent the M-shaped metal rubbers in the half-slot from detaching from both ends of the half-slot. Bolt limiting components are only set at both ends of the half-slot. There is a movable gap between adjacent M-shaped metal rubbers in the half-slot, which facilitates the adjustment of the position according to the pipeline during actual installation. Of course, bolt limiting components can also be set on both sides of the movable half-pipe clamp and the fixed half-pipe clamp corresponding to each M-shaped metal rubber, as long as the M-shaped metal rubbers can be prevented from detaching from the half-slot.

[0036] A working method for a three-dimensional vibration isolation bistable metal damping clamp, including two steady-state operating states: (1) First steady state: cold state and low load: When the pipeline is in normal temperature or low load condition, the spring and the M-type metal rubber are in contact but have not entered the compression range. The spring is in an unloaded state and therefore does not provide effective elastic force. At this time, the two corners of each M-type metal rubber are subjected to radial load generated by the radial vibration of the pipeline, resulting in elastic-plastic deformation and frictional energy dissipation, thereby providing support and damping for lateral vibration. At the same time, the groove of the M-type metal rubber and the shoulder outside the pipeline form an axial limit. The groove is subjected to axial vibration of the shoulder, resulting in compression deformation to achieve axial damping. It is suitable for daily vibration conditions. This structure avoids the local stress concentration caused by uneven pre-tightening force of traditional pipe clamps, while maintaining the initial shape stability of the metal rubber, providing conditions for subsequent steady state force transformation. (2) Second steady state: hot state and high load: When the pipeline enters the high temperature working condition, the thermal expansion of the pipeline causes axial and radial thermal displacement or under high load conditions, the two corners of the M-shaped metal rubber are crushed or compressed to the limit, and its inner cavity begins to squeeze towards the spring. The spring passively participates in the force and officially enters the working range. At this time, the spring and the remaining rubber jointly bear the load, forming a coupled structure of spring stiffness + metal rubber damping, which improves the vibration and impact protection capability and realizes the steady state switching according to temperature, avoiding the problem of instability or insufficient constraint of traditional structures at high temperatures.

[0037] More specifically, the usage of this product in practical applications is as follows: (1) Pre-installation of pipe clamps: Position the movable half-pipe clamp and the fixed half-pipe clamp at the pipe installation location respectively, and fix them to the wall, floor or ceiling with bolts to form a stable connection between the pipe clamp and the equipment or supporting structure; (2) Installation of metal damping components: The metal damping components are fixed in the groove of the pipe clamp body by mechanical snap-fit ​​or press-fitting. One is arranged every 30° along the circumference of the pipeline, and six are accommodated on one side, so as to achieve a uniform arrangement of 12 in the circumference. All components are finally fastened by limit bolts to effectively prevent them from falling off or rotating during operation. (3) Pipeline placement and clamping: Place the pipeline into the M-shaped support cavity formed by the metal-rubber assembly to achieve initial contact between the pipeline and the metal-rubber. Then install the pipe clamp, connect it to the base with bolts and lock it in place to ensure that the pipeline is evenly clamped and form the first steady state (cold state / low load condition).

[0038] (4) Working under cold or low load conditions: Under normal temperature or low load vibration conditions, the pipeline mainly achieves X, Y radial and Z axial vibration attenuation through the three-way support of the M-type metal rubber structure. During this stage, the spring and the metal rubber remain in contact but do not bear the load, and the system maintains low stiffness and high damping vibration isolation performance.

[0039] (5) Steady-state transition under hot or heavy load conditions: When the pipeline expands due to high temperature and causes thermal displacement, or is subjected to impact and large load, the metal rubber first enters a state of compression and energy absorption. When the second steady-state threshold is reached, the force between the pipeline and the metal rubber component is transmitted to the internal spring, and the spring begins to participate in bearing and buffering, thereby providing higher support stiffness and energy absorption capacity.

[0040] (6) Recovery and Continuous Operation: After the external load is reduced, the combined elasticity of the metal rubber and spring allows the system to automatically return to its initial state, maintaining the pipeline in safe operation under bistable circulation and achieving long-term vibration isolation, buffering and thermal adaptation functions.

[0041] This product is suitable for vibration isolation and buffering in various high-temperature pipelines, equipment systems, and complex thermo-mechanical coupling environments. It can be applied to: Vibration isolation and impact energy absorption for high-temperature engine piping, nozzle accessories, and fuel / gas pipelines in the aerospace industry; thermal vibration isolation for high-temperature steam pipelines and combustion equipment connecting pipes in energy and chemical equipment; three-dimensional support and vibration isolation for high-temperature exhaust pipes and heat-resistant vibration paths in ships and power plants; rail transportation and mechanical equipment; vibration isolation support for equipment under high-frequency vibration and high-temperature environments; extreme environment equipment (high temperature, high load, impact conditions) such as high-temperature testing equipment, thermal protection structures, and impact equipment connectors.

[0042] Unless otherwise stated, if any of the technical solutions disclosed in this invention specify a numerical range, then the disclosed numerical range is a preferred numerical range. Anyone skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this invention discloses only some numerical values ​​to illustrate the technical solutions of this invention. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this invention.

[0043] If the terms "first" or "second" are used in this document to specify components, those skilled in the art should know that the use of "first" or "second" is merely for the purpose of distinguishing components in description, and unless otherwise stated, the above terms have no special meaning.

[0044] If this invention discloses or relates to mutually fixedly connected components or structural parts, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured in one piece using a casting process) (except where it is obviously impossible to use an integral molding process).

[0045] Furthermore, the orientations or positional relationships used in any of the technical solutions disclosed in this invention above to indicate positional relationships, such as "longitudinal," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this patent. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent. In addition, unless otherwise stated, the terms used to indicate shape in any of the technical solutions disclosed in this invention above include shapes that are similar to, close to, or approximate with it.

[0046] Any component provided by this invention can be assembled from multiple individual components or can be a single component manufactured by a one-piece molding process.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A triaxial vibration isolation bistable metal damping clamp, characterized in that: The device includes a pipe clamp, which is installed on the outside of a pipe. Several damping components are evenly distributed around the inner wall of the pipe clamp. An annular shoulder is provided on the outer wall of the pipe, and a groove is provided on the damping component corresponding to the shoulder.

2. The triaxial vibration isolation bistable metal damping clamp according to claim 1, characterized in that: The damping component includes an M-shaped metal rubber with two flat corners. The slot is located between the two corners. The two ends of the M-shaped metal rubber are installed on the inner wall of the pipe clamp, and the two corners of the M-shaped metal rubber abut against the outer wall of the pipe.

3. The triaxial vibration isolation bistable metal damping clamp according to claim 2, characterized in that: The lower end face of the groove bottom on the M-type metal rubber is connected to the inner wall of the pipe clamp by a spring.

4. The triaxial vibration isolation bistable metal damping clamp according to claim 3, characterized in that: The two corners of the M-type metal rubber are arranged along the axial direction of the pipe.

5. The triaxial vibration isolation bistable metal damping clamp according to claim 3, characterized in that: The inner wall of the pipe clamp is provided with an annular T-shaped groove along the circumference. The two ends of the M-shaped metal rubber are connected to arc-shaped blocks that cooperate with the T-shaped groove. The pipe clamp is provided with several bolt limiting parts that pass through the T-shaped groove and limit the arc-shaped blocks of the M-shaped metal rubber.

6. The triaxial vibration isolation bistable metal damping clamp according to claim 5, characterized in that: The pipe clamp includes a movable half-pipe clamp and a fixed half-pipe clamp, which are connected by bolts. The fixed half-pipe clamp is fixed to a fixed base.

7. The triaxial vibration isolation bistable metal damping clamp according to claim 6, characterized in that: Both the movable half-pipe clamp and the fixed half-pipe clamp include a semi-circular pipe clamp body. Both ends of the semi-circular pipe clamp body are provided with outward bending plates. The bending plates at both ends of the movable half-pipe clamp are fixedly connected to the bending plates at both ends of the corresponding fixed half-pipe clamp by bolts.

8. The triaxial vibration isolation bistable metal damping clamp according to claim 6, characterized in that: The fixed half-pipe clamp and the fixed seat are connected by a cross rib plate.

9. The triaxial vibration isolation bistable metal damping clamp according to claim 6, characterized in that: The T-slot is divided into two half-slots corresponding to the movable half-pipe clamp and the fixed half-pipe clamp.

10. A method for operating a three-dimensional vibration isolation bistable metal damping clamp, comprising using the three-dimensional vibration isolation bistable metal damping clamp as described in claim 5 or 6, characterized in that: It includes two steady-state operating conditions: (1) First steady state: cold state and low load: when the pipeline is in normal temperature or low load condition, the spring and the M-type metal rubber are in contact but have not entered the compression range. The spring is in an unloaded state and therefore does not provide effective elastic force. At this time, the two corners of each M-type metal rubber are subjected to radial load generated by the radial vibration of the pipeline, which generates elastic-plastic deformation and frictional energy dissipation, thereby providing support and damping for lateral vibration. At the same time, the groove of the M-type metal rubber and the shoulder outside the pipeline form an axial limit. The groove is subjected to axial vibration of the shoulder, which generates compression deformation to achieve axial damping. It is suitable for daily vibration conditions. (2) Second steady state: hot state and high load: When the pipeline enters the high temperature working condition, the thermal expansion of the pipeline causes axial and radial thermal displacement or under high load conditions, the two corners of the M-type metal rubber are crushed or compressed to the limit, and its inner cavity begins to squeeze towards the spring. The spring passively participates in the force and officially enters the working range. At this time, the spring and the remaining rubber jointly bear the load, forming a coupling structure of spring stiffness + metal rubber damping, which improves the vibration and impact protection capability and realizes the steady state switching according to temperature.

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