A hanging low-frequency and high-load rubber vibration absorber

Abstract

The embodiment of the present invention provides a hanging low-frequency and high-load rubber shock absorber. The shock absorber includes: a central rotating member, a rubber structural member, an outer cover shell, a transition plate and a set screw; the transition plate is used to connect the top mounting base; the top of the central rotating member is screwed with the transition plate through a threaded connection, and the set screw is screwed at the connection between the central rotating member and the transition plate to prevent the threaded connection from loosening; the outer diameter of the bottom end of the central rotating member is larger than the outer diameter of the top end, and the rubber structural member is a truncated cone structure, which is vulcanized between the central rotating body and the outer cover shell; the rubber structural member is sleeved on the central rotating member and fits the outer wall of the bottom end of the central rotating member; the inner diameter of the outer cover shell near the top port side gradually shrinks toward the top port side, and the inner wall of the outer cover shell near the top port side is sleeved on the rubber structural member, and the bottom end of the outer cover shell is used to connect the device. The shock absorber can suspend the device and install it at the top of the space, saving installation space. Through the rubber and structural design, a low-frequency and high-load-bearing effect is achieved, and a good low-frequency buffering and vibration reduction effect is achieved while ensuring the load-bearing capacity of the vibration reduction element.

Description

Technical Field

[0001] The present application relates to the technical field of vibration damping elements, and in particular to a suspended low-frequency and high-load rubber vibration damper. Background Art

[0002] Existing shock absorbers used for suspension are mainly airbag shock absorbers and tension shock absorbers. The airbag shock absorber has a complex structure, small load-bearing capacity and cumbersome operation; while the tension shock absorber achieves the suspension function at the expense of the shock absorber's life, which greatly affects the safety and reliability of the shock absorber.

[0003] However, in various military and civilian occasions such as various main and auxiliary engines and pipelines on ships, there is an urgent need for hanging shock absorbers with simple structure and reliable products, which can achieve good low-frequency buffering and vibration reduction while ensuring its load-bearing capacity. The hanging low-frequency and high-load rubber shock absorber of the present invention is different from other shock absorbers. It realizes the function of hanging shock reduction equipment through a specific structure in an apparent tensile manner. Summary of the invention

[0004] The object of the present invention is to provide a hanging type low frequency and large load rubber vibration absorber to solve the above problems.

[0005] The embodiment of the present invention provides a hanging type low frequency and large load rubber vibration absorber, the vibration absorber comprises: a central rotating member, a rubber structural member, an outer cover shell, a transition plate and a set screw;

[0006] The transition plate is used to connect the top mounting base;

[0007] The top end of the central rotating member is screwed with the transition plate through threads, and the set screw is screwed at the connection between the central rotating member and the transition plate to prevent the threaded connection from loosening;

[0008] The outer diameter of the bottom end of the central rotating member is greater than the outer diameter of the top end, and the rubber structural member is a truncated cone structure, vulcanized between the central rotating body and the outer cover shell;

[0009] The rubber structural member is sleeved on the central rotating member and is in contact with the outer wall of the bottom end side of the central rotating member;

[0010] The inner radial direction of the outer cover shell near the top port side is gradually reduced toward the top port side, the inner wall of the outer cover shell near the top port side is sleeved on the rubber structural member, and the bottom end of the outer cover shell is used for connecting equipment.

[0011] In some embodiments, the central rotating member, the rubber structural member and the outer cover shell are vulcanized parts, which have a buffering and vibration reduction effect.

[0012] In some embodiments, the central rotating member, the rubber structural member and the outer cover shell are vulcanized together.

[0013] In some embodiments, the transition plate is provided with an upper mounting hole, and the upper mounting hole is used to connect with the top mounting base.

[0014] In some embodiments, a connecting annular surface is provided at the bottom end of the outer cover shell, and a lower mounting hole is opened on the connecting annular surface, and the lower mounting hole is used to connect with the device.

[0015] In some embodiments, the outer cover shell is an integrally formed structure.

[0016] In some embodiments, the transition plate includes a rectangular plate, the upper surface of which is flat and used to abut the top mounting base, and the center of the lower surface has a protrusion, and the center of the protrusion has a threaded through hole, which is used to screw together with the top of the central rotating member.

[0017] In some embodiments, the outer surface of the top end of the central rotating member is provided with a thread for screwing and connecting with the threaded through hole;

[0018] The central rotating member is axially provided with a threaded hole, the threaded hole is used to connect the set screw, and the set screw can cooperate with the threaded through hole to fasten the central rotating member.

[0019] In some embodiments, the upper mounting holes are formed on two opposite sides of the transition plate, and inclined baffles are provided on the small surfaces on both sides of the transition plate where the upper mounting holes are not formed, corresponding to the outer wall of the outer cover shell near the top end.

[0020] In some embodiments, the vibration absorber operates:

[0021] The device is connected to the bottom end of the outer housing shell through the transition plate connected to the top mounting base;

[0022] The device is suspended below the shock absorber, and the weight and vibration of the device are transferred to the outer cover shell of the shock absorber. The outer cover shell compresses the rubber structure downward and transfers the load to the central rotating member through the rubber structure, and transfers the load to the transition plate and the top mounting base through the central rotating member.

[0023] The beneficial effects of the above embodiments of the present invention include:

[0024] The reliability of the shock absorber is improved by screwing the set screws to prevent the threaded connection from loosening; the buffering and vibration reduction effect is enhanced through the design of vulcanized parts; the installation process of the equipment is simplified, which facilitates the rapid hanging and fixing of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings illustrate generally, by way of example and not limitation, various embodiments discussed herein.

[0026] Figure 1 This is a schematic diagram of the main cross-sectional structure of a hanging low-frequency and high-load rubber vibration absorber according to an embodiment of the present application;

[0027] Figure 2 This is an exploded view of a hanging low-frequency and high-load rubber shock absorber according to an embodiment of the present application;

[0028] Figure 3 This is a schematic diagram of a partial cross-sectional structure of a hanging low-frequency and high-load rubber vibration absorber according to an embodiment of the present application from a left view;

[0029] Figure 4 This is a schematic diagram of the main structure of a hanging low-frequency and high-load rubber vibration absorber according to an embodiment of the present application;

[0030] Figure 5 This is a schematic diagram of the structure of a suspended low-frequency and high-load rubber vibration absorber according to an embodiment of the present application;

[0031] Figure 6 This is a bottom view of the structure of a suspended low-frequency and high-load rubber vibration absorber according to an embodiment of the present application;

[0032] Figure 7 This is a schematic diagram of the installation and use of a hanging low-frequency, high-load rubber vibration absorber;

[0033] Figure 8 It is the static mechanical curve of the hanging low-frequency and high-load rubber shock absorber;

[0034] Fig. 9 This is the dynamic performance curve of the suspended low-frequency and high-load rubber shock absorber. DETAILED DESCRIPTION

[0035] In order to enable a more detailed understanding of the features and technical contents of the embodiments of the present application, the implementation of the embodiments of the present application is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present application.

[0036] In the embodiments of the present application, it should be noted that, unless otherwise specified and limited, the term "connection" should be understood in a broad sense. For example, it can be an electrical connection or a connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0037] It should be noted that the terms "first\second\third" involved in the embodiments of the present application are only used to distinguish similar objects, and do not represent a specific order for the objects. It is understandable that the specific order or sequence of "first\second\third" can be interchanged where permitted. It should be understood that the objects distinguished by "first\second\third" can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0038] The following is combined with Figures 1 to 9 The embodiments of the present invention are described in detail.

[0039] The embodiment of the present invention provides a hanging type low frequency and high load rubber vibration absorber, such as Figures 1 to 6 As shown, the shock absorber includes: a central rotating member 1, a rubber structural member 2, an outer cover shell 3, a transition plate 4 and a fixing screw 5.

[0040] like Figure 7 As shown, the transition plate 4 is used to connect the top mounting base 91. Here, the top mounting base 91 is located at the top and is used to suspend the vibration absorber.

[0041] like Figure 1 and Figure 5 As shown, the top end of the central rotating member 1 is screwed and connected with the transition plate 4 through threads, and a set screw 5 is screwed at the connection between the central rotating member 1 and the transition plate 4 to prevent the threaded connection from loosening.

[0042] The outer diameter of the bottom end of the central rotating member 1 is larger than the outer diameter of the top end. The rubber structure 2 is an annular structure, which is sleeved on the central rotating member 1 and fits at least part of the outer wall of the bottom end of the central rotating member 1 .

[0043] The inner diameter of the outer cover shell 3 near the top port side tapers toward the top port side, and the inner wall of the outer cover shell 3 near the top port side is sleeved on the rubber structure 2 , and the bottom end of the outer cover shell 3 is used for connecting the device 92 .

[0044] In some embodiments, the central rotating member 1, the rubber structural member 2 and the outer cover shell 3 are vulcanized parts, which have a buffering and vibration reduction effect.

[0045] In some embodiments, the central rotating member 1 , the rubber structural member 2 and the outer cover shell 3 are vulcanized together.

[0046] In some embodiments, Figure 3 and Figure 5 As shown, the transition plate 4 is provided with an upper mounting hole 43 , and the upper mounting hole 43 is used to connect with the top mounting base 91 .

[0047] In some embodiments, Figure 1 , Figure 3 and Figure 6As shown, a connecting annular surface 31 is provided at the bottom end of the outer cover shell 3 , and a lower mounting hole 32 is opened on the connecting annular surface. The lower mounting hole 32 is used to connect with the device 92 .

[0048] In some embodiments, the outer housing shell 3 is an integrally formed structure. Here, the outer housing shell 3 can be obtained by subtractive manufacturing, additive manufacturing or mold casting.

[0049] In some embodiments, Figure 1 , Figure 4 and Figure 5 As shown, the transition plate 4 includes a rectangular plate, the upper surface of which is flat and is used to abut against the top mounting base 91, and the center of the lower surface has a protrusion 41, and the center of the protrusion 41 has a threaded through hole, which is used to be screwed together with the top of the central rotating member 1.

[0050] In some embodiments, a thread is disposed on the outer surface of the top end of the central rotating member 1 for screwing and connecting with the threaded through hole.

[0051] A threaded hole is axially provided on the central rotating member 1 , and the threaded hole is used to connect a set screw 5 . The set screw 5 can cooperate with the threaded through hole to fasten the central rotating member 1 .

[0052] In some embodiments, Figure 1 and Figure 4 As shown, the upper mounting holes 43 are formed on two opposite sides of the transition plate 4 , and the small surfaces on both sides of the transition plate 4 where the upper mounting holes 43 are not formed are provided with oblique stoppers 42 corresponding to the outer walls of the outer cover shell 3 near the top end.

[0053] In some embodiments, the vibration damper operates:

[0054] The device 92 is connected to the bottom end of the outer cover shell 3 through the transition plate 4 connected to the top mounting base 91.

[0055] The device 92 is suspended below the shock absorber, and the weight of the device 92 is transferred to the outer cover shell 3 of the shock absorber. The outer cover shell 3 compresses the rubber structure 2 downward and transfers the load to the central rotating member 1 through the rubber structure 2, and transfers the load to the transition plate 4 and the top mounting base 91 through the central rotating member 1.

[0056] In the embodiment of the present application, the central rotating member 1, the rubber structural member 2 and the outer cover shell 3 are vulcanized together to form a vulcanized member that plays a leading role in buffering and vibration reduction. The vulcanized member is screwed together with the transition plate 4, and the set screw 5 is screwed together at the connection between the central rotating member 1 and the transition plate 4 to prevent the loosening of the threaded connection, thereby improving the reliability of the shock absorber.

[0057] During actual use, the shock absorber described in this patent directly connects the upper mounting hole of the transition plate 4 with the top mounting base through bolts, and similarly connects the lower mounting hole of the outer cover shell 3 with the equipment through bolts, so that the equipment is hung on the top mounting base through the shock absorber.

[0058] The working principle and use diagram of the embodiment of the present application are as follows Figure 7 As shown in the figure, the equipment is suspended below the shock absorber, and the weight of the equipment is transferred to the outer cover of the shock absorber through the mounting bolts. The outer cover compresses the rubber structure downward and transfers the load to the central rotating part through the rubber structure. Finally, the load is transferred to the transition plate and the top mounting base through the external thread of the central rotating part. Although this hanging installation method makes the shock absorber appear to be in a tensile state, for the elastic element that acts as a vibration damping buffer, the rubber structure mainly bears compressive stress, the risk factor is small, and the safety of use is high.

[0059] The embodiment of the present application provides a suspended low-frequency and high-load rubber vibration absorber, comprising: a vulcanized part, a transition plate and a set screw.

[0060] The vulcanized parts include a central rotating part, an outer cover shell and a rubber structural part. The central rotating part is machined by a steel bar machine and has a nearly conical structure. The upper part of the central rotating part is machined with an external thread, the size of which is not less than M27, and the lower part is provided with a space for a process hexagonal wrench. The lower end face of the outer cover shell is provided with through holes in an array along the circumferential direction and is connected to the equipment mounting surface by bolts. Finally, the rubber is vulcanized through a mold to form a vulcanized part with a diameter of not less than 35 mm between the central rotating part and the outer cover shell. The load-function relationship between the central rotating part, rubber and the outer cover shell realizes the suspension bearing function of the shock absorber. Reinforcement rib structures are set on both sides of the transition plate to improve the connection stiffness and strength of the shock absorber.

[0061] The molding and assembly process of the hanging low-frequency and high-load rubber shock absorber is as follows:

[0062] First, the outer cover shell and the central rotating part are processed, and the central rotating part and the outer cover shell are placed in the mold, and then the rubber is vulcanized in it. After demoulding, it is screwed with the transition plate, and the transition plate is screwed to the specified tightening torque using the hexagonal wrench process hole at the bottom of the central rotating part. Finally, the shock absorber is fixed through the mounting hole of the transition plate, and a through hole in the circumferential direction of the lower end face of the outer cover shell is drilled.

[0063] The embodiments of the present invention can be applied to various military and civilian occasions, including vibration reduction elements for hanging various main and auxiliary engines and pipelines on ships. According to the installation interfaces of different equipment and the needs of specific installation occasions, the hanging low-frequency and high-load rubber vibration reducer can hang and install the equipment on the top of the space, saving installation space. And through the rubber and structural design of the rubber vibration reducer, a low-frequency and high-load effect is achieved, ensuring the load-bearing capacity of the vibration reduction element while achieving a good low-frequency buffering and vibration reduction effect.

[0064] The hanging low-frequency and high-load rubber shock absorber is different from other rubber shock absorbers in terms of apparent pressure-bearing form, and can realize the function of hanging vibration reduction equipment through a specific structure.

[0065] The suspended low-frequency and high-load rubber shock absorber is designed with rubber and elastic element structure to achieve an apparent tensile load capacity of 2 tons and a natural frequency as low as 5±1Hz.

[0066] The suspended low-frequency and high-load rubber shock absorber is designed to be compact in space and fully considers the requirements related to general quality characteristics such as reliability.

[0067] To this end, this intellectual achievement has designed a hanging low-frequency and high-load rubber shock absorber, which can meet the hanging use environment of various main and auxiliary engines and pipelines on ships, and has extremely strong engineering application value.

[0068] The present invention provides a performance test for the shock absorber of the above embodiment, which is specifically as follows.

[0069] The processed shock absorber is tested for static and dynamic mechanical properties:

[0070] ① According to GB / T 15168-2013, the static performance test of the shock absorber is carried out. The test temperature is 25℃±5℃. The test parameters are the static deformation and vertical static stiffness under the vertical rated load. The test steps are as follows:

[0071] The shock absorber is installed horizontally on the testing machine. The load is added from zero to 1.25 times of the rated load and then maintained. After unloading, preload and unload are performed three times. The vertical test load is 20kN and the loading rate is 5mm / min. During the fourth formal loading, the deformation values ​​under 0.9 times, 1.0 times, and 1.1 times of the rated load are measured. The compression static stiffness of the shock absorber is:

[0072]

[0073] Among them, P0 is the rated load of the shock absorber;

[0074] X 1.1 It is the static deformation value at 1.1 times the rated load during loading.

[0075] X 0.9 It is the static deformation value at 0.9 times the rated load during loading.

[0076] Static performance test results are as follows Figure 3 shown.

[0077] Depend on Figure 8 It can be seen that the static deformation of the shock absorber in the embodiment of the present application is 12.5 mm under a rated load of 20 kN, and the corresponding static stiffness is 3540 kN / mm.

[0078] ② According to GB / T 15168-2013, the dynamic mechanical properties of the shock absorber are tested using the normal temperature sweep frequency test method. The test temperature is 25℃±5℃. The test method is as follows:

[0079] The shock absorber is installed horizontally on the testing machine, the preload is 20kN, the displacement amplitude of the sweep frequency test is 1mm, the vertical dynamic stiffness frequency range is 5.5Hz~6Hz, the frequency interval is 0.1Hz, and the number of cycles of a single frequency point is 50 times.

[0080] Depend on Fig. 9 It can be seen that the natural frequency of the shock absorber described in this patent is 5.8Hz under a rated load of 20kN.

[0081] As described above, the embodiment of the present application can realize a hanging type apparent tensile vibration absorber with a natural frequency as low as 5±1 Hz under a large load of 20 kN, with a compact and reliable structure and high engineering application value.

[0082] The technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0083] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A hanging low-frequency high-load rubber shock absorber, characterized in that: The shock absorber comprises: a central rotating member, a rubber structural member, an outer cover shell, a transition plate and a set screw; The transition plate is used to connect the top mounting base; The top end of the central rotating member is screwed with the transition plate through threads, and the set screw is screwed at the connection between the central rotating member and the transition plate to prevent the threaded connection from loosening; The outer diameter of the bottom end of the central rotating member is greater than the outer diameter of the top end, and the rubber structural member is a truncated cone structure, vulcanized between the central rotating body and the outer cover shell; The rubber structural member is sleeved on the central rotating member and is in contact with the outer wall of the bottom end side of the central rotating member; The inner radial direction of the outer cover shell near the top port side is gradually reduced toward the top port side, the inner wall of the outer cover shell near the top port side is sleeved on the rubber structural member, and the bottom end of the outer cover shell is used for connecting equipment.

2. The hanging low-frequency and high-load rubber vibration absorber according to claim 1 is characterized in that: The central rotating member, the rubber structural member and the outer cover shell are vulcanized parts and have a buffering and vibration reduction effect.

3. The hanging low-frequency and high-load rubber vibration absorber according to claim 2 is characterized in that: The central rotating member, the rubber structural member and the outer cover shell are vulcanized together.

4. The hanging low-frequency and high-load rubber vibration absorber according to claim 1 is characterized in that: The transition plate is provided with an upper mounting hole, and the upper mounting hole is used to be connected with the top mounting base.

5. The hanging type low frequency and high load rubber vibration absorber according to claim 1 is characterized in that: A connecting annular surface is arranged at the bottom end of the outer cover shell, and a lower mounting hole is opened on the connecting annular surface, and the lower mounting hole is used for connecting with the device.

6. The hanging low-frequency and high-load rubber vibration absorber according to claim 5 is characterized in that: The outer cover shell is an integrally formed structure.

7. The hanging low-frequency and high-load rubber vibration absorber according to claim 4 is characterized in that: The transition plate comprises a rectangular plate, the upper surface of which is a plane for connecting to the top mounting base, and the center of the lower surface has a protrusion, the center of the protrusion has a threaded through hole, and the threaded through hole is used for screwing and connecting with the top end of the central rotating member.

8. The hanging low-frequency and high-load rubber vibration absorber according to claim 7 is characterized in that: The outer surface of the top end of the central rotating member is provided with a thread for screwing and connecting with the threaded through hole; The central rotating member is axially provided with a threaded hole, the threaded hole is used to connect the set screw, and the set screw can cooperate with the threaded through hole to fasten the central rotating member.

9. The hanging low-frequency and high-load rubber vibration absorber according to claim 7 is characterized in that: The upper mounting holes are formed on two opposite sides of the transition plate, and oblique baffles are provided on the small surfaces on both sides of the transition plate where the upper mounting holes are not formed, corresponding to the outer wall of the outer cover shell near the top end.

10. The suspended low-frequency and high-load rubber vibration absorber according to any one of claims 1 to 9, characterized in that: When the shock absorber is working: The device is connected to the bottom end of the outer housing shell through the transition plate connected to the top mounting base; The device is suspended below the shock absorber, and the weight and vibration of the device are transferred to the outer cover shell of the shock absorber. The outer cover shell compresses the rubber structure downward and transfers the load to the central rotating member through the rubber structure, and transfers the load to the transition plate and the top mounting base through the central rotating member.

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