Modular variable damping shock absorber

Abstract

The shock absorber of the application is modularized in shock absorption structure and base structure, the base module is a polyhedron, and each face of the base can be detachably connected with the shock absorption module; different combinations of the base module and the shock absorption module can be selected according to the situation to achieve the ideal shock absorption effect, and the application is suitable for the engine room of a ship with a complex structure; and the shock absorber in the application can change the damping of the shock absorber by changing the flow area of the adjusting valve, the number of the mass blocks and the number of the shock absorption modules. The shock absorber in the application has simple structure, strong practicability, wide applicability, and can be installed in many positions, and can meet the stable use in the complex engine room environment.

Description

Technical Field

[0001] This invention relates to the field of ship vibration absorption, and in particular to a modular variable damping vibration damper. Background Technology

[0002] The ship's engine room is a large, enclosed space where various mechanical and electrical equipment are concentrated. During operation, these equipment generates vibrations; for example, the ship's engines cause abnormal vibrations in the engine room deck and bulkheads. Furthermore, different pieces of equipment have different masses and vibration frequencies, which can lead to resonance in the hull structure, affecting the ship's stability and adversely impacting the structural quality and the health of personnel. Current technologies do not adequately address the challenges of complex environments like ship engine rooms. Moreover, traditional vibration dampers have a fixed damping system, meaning the damping coefficient cannot be adjusted when equipment operating conditions change. Consequently, the vibration reduction effect of traditional dynamic vibration absorbers is not ideal. Summary of the Invention

[0003] In view of the deficiencies in the prior art, this application provides a modular variable damping vibration damper to solve the technical problems that the vibration dampers in the prior art cannot be used in complex environments and the damping is a constant value.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a modular variable damping vibration damper, comprising a vibration damper module and a base module;

[0005] The shock absorber module includes a cylinder body, a cylinder head, a sealing cover, a piston plate, a spring, and a regulating valve. One end of the cylinder body is connected to the cylinder head, which is in a non-sealed connection with the cylinder body. The other end of the cylinder body is provided with a sealing cover. The piston plate is in a sealed sliding fit with the inner wall of the cylinder body. The space between the cylinder head and the piston plate inside the cylinder body is defined as the upper chamber, and the space between the piston plate and the sealing cover is defined as the lower chamber. A spring is provided in the lower chamber. One end of the spring is fixedly connected to the piston plate, and the other end of the spring is fixedly connected to the sealing cover. The lower chamber is filled with damping fluid, and the lower chamber is connected to the inlet of the regulating valve. The damping fluid flows into or out of the lower chamber through the regulating valve.

[0006] The base module is a polyhedron, and each face of the base module can be detachably connected to the vibration damper module. The base module can also be detachably connected to the vibration structure.

[0007] In one embodiment, each side of the base module is provided with a threaded hole, and the base module is connected to the vibration damping module by a screw.

[0008] In one embodiment, a limit post is provided in the lower chamber along the cylinder axis, and the spring is sleeved on the limit post. When the vibration damping module is not working, there is a distance between the top of the limit post and the piston plate.

[0009] In one embodiment, the limiting post passes through the sealing cover, and one end of the limiting post protruding from the sealing cover is provided with an external thread. Each side of the base module is provided with a threaded hole, and the external thread matches the threaded hole.

[0010] In one embodiment, the damping fluid is a liquid, the outlet of the regulating valve is connected to a liquid pipe, and the top of the liquid pipe has an opening that communicates with the atmosphere.

[0011] In one embodiment, the liquid tube is a glass tube.

[0012] In one embodiment, a mass block is provided on the piston plate.

[0013] In one embodiment, a gradually expanding flow channel is provided inside the regulating valve along the axis of the regulating valve inlet toward the interior of the regulating valve. The outlet of the regulating valve is located on the side wall of the flow channel, and the axis of the outlet is perpendicular to the axis of the inlet. An adjusting column is provided inside the flow channel and is threadedly connected to the regulating valve body. One end of the adjusting column is provided with a conical body that matches the flow channel, and the other end of the adjusting column extends out of the regulating valve body. An adjusting knob is provided at the end of the adjusting column that extends out of the valve body.

[0014] In one embodiment, the cylinder head is provided with vent holes.

[0015] This invention also provides a modular variable damping shock absorber, including a shock absorber module; the shock absorber module includes a cylinder body, a cylinder head, a sealing cover, a piston plate, a spring, and an adjusting valve. One end of the cylinder body is connected to the cylinder head, and the cylinder head is not sealed to the cylinder body. The other end of the cylinder body is provided with a sealing cover. The piston plate is in a sealed sliding fit with the inner wall of the cylinder body. The space between the cylinder head and the piston plate in the cylinder body is defined as the upper chamber, and the space between the piston plate and the sealing cover is defined as the lower chamber. A spring is provided in the lower chamber. One end of the spring is fixedly connected to the piston plate, and the other end of the spring is fixedly connected to the sealing cover. The lower chamber is filled with damping fluid, and the lower chamber is connected to the inlet of the adjusting valve. The damping fluid flows into or out of the lower chamber through the adjusting valve. A screw is provided on the outside of the sealing cover and is perpendicularly connected to it.

[0016] Compared with the prior art, the beneficial effects of this application are as follows:

[0017] This invention modularizes the damping structure and base structure of the shock absorber. The base module is a polyhedron, and each face of the base can be detachably connected to the damping module. Depending on the situation, different combinations of the base module and the damping module can be selected to achieve the ideal damping effect, making it suitable for ship engine rooms with complex structures. Furthermore, the damping of the shock absorber in this invention can be changed by altering the flow area of ​​the regulating valve, the number of mass blocks, and the number of damping modules. The shock absorber of this invention has a simple structure, is highly practical, widely applicable, and can be installed in multiple locations, meeting the requirements for stable use in complex engine room environments. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the vibration damper module structure in an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the base module in an embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the regulating valve structure in an embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the limiting bolt structure in an embodiment of this application;

[0023] Figure 5 This is a schematic diagram of the installation of the vibration damper module and the base module in an embodiment of this application;

[0024] Figure 6 This is a schematic diagram of the installation of the vibration damper module and the vibration structure in an embodiment of this application. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0027] like Figure 1-6 As shown, this embodiment discloses a modular variable damping vibration damper, including a vibration damper module 1 and a base module 2;

[0028] like Figure 1 As shown, the shock absorber module 1 includes a cylinder body 105, a cylinder head 101, a piston plate 103, a spring 106, and a regulating valve 108. One end of the cylinder body 105 is connected to the cylinder head 101, and the cylinder head 101 is in a non-sealed connection with the cylinder body 105. The other end of the cylinder body 105 is provided with a sealing cap 110. The piston plate 103 is in a sealed sliding fit with the inner wall of the cylinder body 105. The space between the cylinder head 101 and the piston plate 103 within the cylinder body 105 is defined as the upper chamber, and the space between the piston plate 103 and the sealing cap 110 is defined as the lower chamber. The lower chamber contains a spring 106, one end of which is fixedly connected to the piston plate 103, and the other end is fixedly connected to the sealing cap 110 of the cylinder body 105. The lower chamber is filled with damping fluid and is connected to the inlet 801 of the regulating valve 108. The damping fluid flows into or out of the lower chamber through the regulating valve 108. The regulating valve 108 can be used to control the flow rate of the fluid passing through it, thereby changing the damping of the damping module 1. The damping fluid can be liquid or air. When the damping fluid is liquid, the outlet 802 of the regulating valve is connected to a liquid pipe 109, with an opening at the top of the liquid pipe 109 to communicate with the atmosphere, thus forming a communicating vessel between the lower chamber and the liquid pipe. For easy observation of the liquid flow and to determine whether the damping module 1 is working properly, the liquid pipe 109 can be a glass tube. When the damping fluid is air, the outlet of the regulating valve 108 is directly connected to the atmosphere.

[0029] In order to limit the vertical movement of the piston plate 103 and thus control the maximum extension of the spring 106, a limit post 107 is provided in the lower chamber along the axial direction of the cylinder body 105. The spring 106 is sleeved on the limit post 107. When the vibration damping module 1 is not working, there is a distance between the top end 701 of the limit post 107 and the piston plate 103.

[0030] The base module 2 is a polyhedron, and each face of the base module 2 can be detachably connected to the vibration damper module 1. The base module 2 is also detachably connected to the vibration structure 3. In this embodiment, each face of the base module 2 is provided with a threaded hole 201, and the base module 2 and the vibration damper module 1 are connected by a screw.

[0031] like Figure 1 ,4 As shown, the limiting post 107 passes through the sealing cover 110, and one end of the limiting post 107 extending out of the sealing cover 110 is provided with an external thread 702, which mates with the threaded hole 201. Figure 2 As shown in the figure, in this embodiment, the base module 2 is a hexahedron, and a threaded hole is provided at the center of each face.

[0032] By cooperating with the damper module 1 and the base module 2, various installation methods for the damper can be achieved. (See attached diagram.) Figure 5 As shown, one side of the base module 1 is fixedly connected to the vibration structure 3 via a connecting screw 4, and the other two sides of the base module 1 are respectively fixedly connected to damper modules 1 via the mutual engagement of limiting posts 107 with external threads 702 and threaded holes 201. In other embodiments, each side of the base module 1 can be detachably connected to a damper module 1 to meet different vibration reduction requirements. For example... Figure 6 As shown, depending on the actual vibration conditions, the damper module 1 can also be directly fixed to the vibration structure 3 via screws.

[0033] In the lower chamber, a seal is provided on the sealing cover to prevent leakage of the damping fluid, and the limiting post 107 passes through the seal. In the upper chamber, a mass block 102 is provided on the piston plate 103, and the damping of the damping module 1 is controlled by adjusting the number of mass blocks 102. To facilitate communication between the upper chamber and the atmosphere, a vent hole (not shown in the attached drawings) is provided on the cylinder head 101.

[0034] like Figure 3 As shown, a gradually expanding flow channel 803 is provided inside the regulating valve 108 along the axis of the inlet 801 toward the interior of the regulating valve. The outlet 802 is provided on the side wall of the flow channel 803, and the axis of the outlet 802 is perpendicular to the axis of the inlet 801. An adjusting column is provided inside the flow channel 803. The adjusting column is threadedly connected to the regulating valve body. One end of the adjusting column is provided with a cone that matches the flow channel 803. The other end of the adjusting column extends out of the regulating valve body, and an adjusting knob 804 is provided at the end of the adjusting column that extends out of the valve body. The flow cross section of the flow channel 803 can be adjusted by rotating the adjusting knob 804.

[0035] If the fluid filling the lower chamber of cylinder 105 is liquid, when vibration occurs, the damper module 1 starts to work, and the spring 106 will drive the piston plate 103 and the mass block 102 to reciprocate along the axial direction of cylinder 105. When the spring 106 is compressed, the liquid in the cylinder 105 flows into the regulating valve 108 through the inlet 801, flows through the fluid passage 803, and flows out into the liquid pipe 109 through the outlet 802. At this time, the liquid level in the cylinder 105 decreases, and the liquid level in the liquid pipe 109 increases. The volume of the upper chamber increases, the volume of the lower chamber decreases, and the positions of the piston plate 103 and the mass block 102 move downward. When the spring 106 is extended, the liquid in the liquid pipe 109 flows in through the outlet 802, flows through the fluid passage 803, and flows into the cylinder 105 through the inlet 801. At this time, the liquid level in the cylinder 105 increases, the liquid level in the liquid pipe 109 decreases, the volume of the upper chamber 402 decreases, the volume of the lower chamber 401 increases, and the positions of the piston plate 103 and the mass block 2 move upward. Based on the actual vibration situation, adjust knob 804 to control the opening and closing degree of passage 803, thereby controlling the flow rate of liquid through regulating valve 108. Increasing the flow rate will reduce the damping provided by damper module 1, while decreasing the flow rate will increase the damping provided by damper module. When the knob is closed, the conical body at one end of the adjusting column makes seamless contact with the inner wall of flow channel 803, preventing fluid from entering or exiting the liquid pipe through the regulating valve, thus stopping the damper module from working.

[0036] If the fluid filling the lower chamber of cylinder 105 is air, when vibration occurs, the damper module 1 starts to work, and spring 106 will cause piston plate 103 and mass block 2 to reciprocate along the axial direction of cylinder 105. When spring 106 is compressed, the air in cylinder 105 flows into regulating valve 108 through inlet 801, flows through fluid passage 803, and is discharged to the atmosphere from outlet 802. At this time, the volume of upper chamber increases, the volume of lower chamber decreases, and the position of piston plate 103 and mass block 2 moves downward. When spring 106 is extended, air flows into regulating valve 108 through outlet 802, flows through fluid passage 803, and flows into lower chamber from inlet 801. At this time, the volume of upper chamber 402 decreases, the volume of lower chamber 401 increases, and the position of piston plate 103 and mass block 2 moves upward. Based on the actual vibration situation, adjust knob 804 to control the opening and closing degree of passage 803, thereby controlling the air flow through regulating valve 108. Increasing the flow rate will reduce the damping provided by the vibration damper module, decreasing the flow rate will increase the damping provided by the vibration damper module, and closing the knob will stop the vibration damper module from working.

[0037] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A modular variable damping vibration damper, characterized in that, Includes a vibration damper module and a base module; The shock absorber module includes a cylinder body, a cylinder head, a sealing cover, a piston plate, a spring, and a regulating valve. One end of the cylinder body is connected to the cylinder head, which is in a non-sealed connection with the cylinder body. The other end of the cylinder body is provided with a sealing cover. The piston plate is in a sealed sliding fit with the inner wall of the cylinder body. The space between the cylinder head and the piston plate inside the cylinder body is defined as the upper chamber, and the space between the piston plate and the sealing cover is defined as the lower chamber. A spring is provided in the lower chamber. One end of the spring is fixedly connected to the piston plate, and the other end of the spring is fixedly connected to the sealing cover. The lower chamber is filled with damping fluid, and the lower chamber is connected to the inlet of the regulating valve. The damping fluid flows into or out of the lower chamber through the regulating valve. Inside the regulating valve, a gradually expanding flow channel is provided along the axis of the regulating valve inlet towards the interior of the regulating valve. The outlet of the regulating valve is located on the side wall of the flow channel, and the axis of the outlet is perpendicular to the axis of the inlet. An adjusting column is provided inside the flow channel, and the adjusting column is threadedly connected to the regulating valve body. One end of the adjusting column is provided with a conical body that matches the flow channel, and the other end of the adjusting column extends out of the regulating valve. An adjusting knob is provided at the end of the adjusting column that extends out of the valve body. The base module is a polyhedron, and each face of the base module can be detachably connected to the vibration damper module. The base module is detachably connected to the vibration structure.

2. The modular variable damping vibration damper according to claim 1, characterized in that, Each side of the base module is provided with a threaded hole, and the base module is connected to the vibration damper module by a screw.

3. The modular variable damping vibration damper according to claim 1, characterized in that, A limit post is provided in the lower chamber along the cylinder axis, and the spring is sleeved on the limit post. When the damper module is not working, there is a distance between the top of the limit post and the piston plate.

4. The modular variable damping vibration damper according to claim 3, characterized in that, The limiting post passes through the sealing cover, and one end of the limiting post that protrudes from the sealing cover is provided with an external thread. Each side of the base module is provided with a threaded hole, and the external thread matches the threaded hole.

5. The modular variable damping vibration damper according to claim 1, characterized in that, The damping fluid is a liquid, the outlet of the regulating valve is connected to the liquid pipe, and the top of the liquid pipe has an opening that communicates with the atmosphere.

6. The modular variable damping vibration damper according to claim 5, characterized in that, The liquid tube is a glass tube.

7. The modular variable damping vibration damper according to claim 1, characterized in that, A mass block is provided on the piston plate.

8. The modular variable damping vibration damper according to claim 1, characterized in that, The cylinder head is provided with vent holes.

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