Non-main vibration direction self-limiting metal vibration reduction buffer device

Abstract

The utility model provides a self-limiting metal vibration reduction buffer device in a non-main vibration direction. The self-limiting metal vibration reduction buffer device comprises two metal wire mesh vibration reduction pads, a connecting end cover, a steel sleeve, a central connecting column and a gasket. Structural components are all made of metal materials and have good environment weather resistance under high and low temperature and certain salt mist and mould environments. According to the utility model, the flexibility in the main vibration direction and the self-limiting in the radial direction are ensured structurally, namely, the single-side blind installation can be realized when a connecting effect is achieved; the shock absorber is mainly used for shock absorption and buffering of bait projectile type explosion separation connecting parts, and the structural reliability of shock-absorbed equipment under large-scale high-frequency impact and large-displacement low-frequency impact can be effectively protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of shock absorption and buffering, and particularly relates to a shock absorption and buffering device with an all-metal structure. Background Art

[0002] On certain weapon models, the mechanical environment, such as high-frequency explosions and large-displacement low-frequency shocks, creates harsh conditions at the decoy flare's separation and connection points, reducing product structural reliability. To address these issues, the overall design is being improved by strengthening the overall structural rigidity or adding vibration-damping elastic elements. This reduces the vibration and shock environment after installation and ensures proper operation of the internal electrical components, pyrotechnics, and key connections.

[0003] Increasing structural rigidity will increase the size of certain structural parts, violating the principle of lightweight design and thus affecting the performance of the entire machine. The general solution is to add non-metallic vibration-damping elastomers such as rubber to the connection parts. However, these materials are difficult to store for a long time and are easily oxidized and damaged in high and low temperature, salt spray, mold and other environments, resulting in reduced vibration damping performance or even failure, which cannot fully meet the environmental requirements of the entire machine. In addition, in the design of single-machine products, the interface with the overall equipment is generally required to be simple and effective. For vibration damping and shock isolation devices, reserved threaded holes are often used, and they are directly assembled after being connected to the single machine. This requires that the vibration damping product can be installed on one side. The vibration damping and shock isolation device is similar to a "flexible adapter". There is a contradiction between the overall installation requirements and the flexible characteristics of the vibration damping product, which puts forward self-limiting requirements for the vibration damping and buffering devices at the connection parts. Summary of the Invention

[0004] The purpose of this utility model is to overcome the problems existing in the above-mentioned prior art and provide a metal vibration damping and buffering device that is self-limiting in the non-primary vibration direction. The vibration damping and buffering device is made of all-metal materials, including a metal wire mesh structure for the vibration damping elastomer, which meets the requirements of long-term storage, high and low temperature resistance, mildew resistance, and salt spray resistance. In terms of performance, the use of vibration damping elements with friction damping can dissipate vibration impact energy. During the assembly process of a single machine, the structural design ensures that the vibration damping and buffering device does not need to be disassembled and can be delivered with the single machine. In a narrow interface, it can be installed and rotated on one side without the help of auxiliary tooling, thereby improving assembly efficiency.

[0005] The present invention provides a self-limiting metal vibration damping and buffering device in a non-main vibration direction (the main vibration direction generally refers to the axial direction of the vibration damping and buffering device), which is used for vibration damping and buffering of explosive separation connection parts of decoy bombs. The device is an all-metal structure containing metal mesh material, which is connected to the vibration-damped equipment and the overall adapter flange through upper and lower studs and threaded holes. It can ensure the connection strength while reducing the normal working requirements of electrical products, pyrotechnics and key connection links installed in the vibration-damped equipment under specific vibration and impact environments. At the same time, the metal stainless steel wire mesh elastomer and titanium alloy structural parts enable the present invention to be stored for a long time, resistant to high and low temperatures, salt spray, and mold. The high damping coefficient of 15% to 20% of the metal mesh material enables the present invention to effectively dissipate the vibration impact energy of the entire equipment in the corresponding mechanical environment, maintaining the integrity and reliability of its structure.

[0006] The utility model discloses a metal vibration damping and buffering device, which includes two wire mesh vibration damping pads, a connecting end cap, a steel sleeve, a central connecting column, and a gasket. The connecting end cap is machined with a stud and a slotted top for installation. The two wire mesh vibration damping pads are symmetrically distributed on the upper and lower surfaces of the central connecting column. The connecting end cap and the steel sleeve are connected by internal and external threads. The gasket is a clamp structure with two 1 / 4 arc bosses. After being aligned with the central connecting column and installed, it will not disengage in the axial direction. Epoxy glue is applied before alignment to prevent loosening. After curing for 24 hours, the gasket can be integrated with the central connecting column without strong damage.

[0007] The metal vibration damping and buffering device of the present invention is connected to the vibration-damped equipment and the overall adapter flange through upper and lower studs and threaded holes. The upper stud of the connecting end cover passes through the through hole of the stand-alone equipment and is installed through nuts, spring-flat washers, etc. During installation, a flat-head screwdriver is used to clamp the flat-head slot at the top of the stud and tighten the nut. A threaded hole is reserved at the tail of the center connecting column. The overall equipment is connected to the mounting hole of the center connecting column through the screw through the adapter flange. From then on, the metal vibration damping and buffering device of the present invention connects the vibration-damped equipment and the overall adapter flange. Two symmetrical planes are cut out in the middle of the center connecting column, and small planes are also retained at the corresponding positions of the steel sleeve. The two parts are clearance-matched. The center connecting column will rotate while ensuring the tightening torque requirements as the screws are tightened. At this time, the planes at the corresponding positions of the two parts come into contact, limiting the rotation of the center connecting column, and the product can be installed smoothly. The thread rotation direction of the center connecting column is consistent with the thread rotation direction of the steel sleeve, so the thread will not loosen during the tightening process.

[0008] The structural components of the non-main vibration direction self-limiting metal vibration damping and buffering device of the utility model are all metal components.

[0009] The non-main vibration direction self-limiting metal vibration damping buffer device of the utility model provides support rigidity and friction damping through a metal wire mesh pad.

[0010] The structure and quantity of each component of the present invention can be changed. Based on the technical solution of the present invention, any improvement to the structure of the components according to the principle of the present invention should not be excluded from the scope of protection of the present invention.

[0011] The beneficial effects of the utility model are as follows:

[0012] 1. The structure of the utility model ensures flexibility in the main vibration direction and radial self-limiting, that is, it can be installed blindly on one side when it plays a connecting role;

[0013] 2. The elastic components and damping elements of this utility model are made of metal materials, and have good environmental weather resistance in high and low temperatures (-15℃~300℃), as well as certain salt spray and mold environments;

[0014] 3. The first-order natural frequency of the utility model is about 50Hz. Under the high-frequency impact of 40000g (±6dB), the product structure is complete and reliable, the impact response is less than 400g, and the impact isolation efficiency is greater than 90%. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which constitute part of this application, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0016] Figure 1 This is an external view of a non-main vibration direction self-limiting metal vibration damping and buffering device according to an embodiment of the utility model;

[0017] Figure 2 This is a full cross-sectional view of the structure of a self-limiting metal vibration damping and buffering device in a non-main vibration direction according to an embodiment of the present utility model;

[0018] Figure 3 This is an outline diagram of the central connecting column of a self-limiting metal vibration damping and buffering device in a non-main vibration direction according to an embodiment of the utility model;

[0019] Figure 4 This is an external view of a gasket of a self-limiting metal vibration damping and buffering device in a non-main vibration direction according to an embodiment of the utility model;

[0020] Figure 5 This is a diagram showing the connection relationship between the central connecting column and the gasket of a self-limiting metal vibration damping and buffering device in a non-main vibration direction according to an embodiment of the utility model;

[0021] Figure 6 This is a static position diagram of the central connecting column and steel sleeve of a self-limiting metal vibration damping and buffering device in a non-primary vibration direction according to an embodiment of the utility model.

[0022] Among them: 1-connecting end cover, 2-steel sleeve, 3-center connecting column, 4-gasket, 5-metal mesh vibration damping pad. DETAILED DESCRIPTION

[0023] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0024] The embodiment of the utility model provides a self-limiting metal vibration damping and buffering device in a non-main vibration direction. Figure 1 、 Figure 2 Shows the outline and cross-sectional view of the self-limiting metal vibration damping and buffering device in the non-main vibration direction. Figure 3 、 Figure 4 Shows the outline of the center connecting column and gasket of the part, Figure 5 Shows the connection relationship between the central connecting column and the gasket, Figure 6 The static position relationship between the steel sleeve and the central connecting column is shown.

[0025] The utility model provides a self-limiting metal vibration damping and buffering device in the non-main vibration direction, such as Figure 1 As shown, it includes a connecting end cap 1, a steel sleeve 2, a central connecting column 3, a gasket 4, and two wire mesh pads 5. The gasket and the central connecting column are located at opposite positions, each with a clamp structure having two 1 / 4 arc bosses. The outer surface of the gasket has two triangular grooves symmetrically distributed along the axial direction. A straight groove is provided at the top of the connecting end cap stud. The steel sleeve and the central connecting column are both flat surfaces.

[0026] The utility model is a self-limiting metal vibration damping and buffering device in the non-main vibration direction, and two metal wire mesh pads 5 are installed on the upper and lower surfaces of the middle boss of the center connecting column 3; the bottom end face of the center connecting column 3 passes through the perforated surface of the steel sleeve 2, and the corresponding positions of the center connecting column 3 and the steel sleeve 2 are plane-to-plane relative, which can be deflected at a certain small angle, and the planes are not required to be absolutely parallel, and then connected with the gasket 4. The connection method is that the two 1 / 4 arc bosses are first rotated 90° along the axial direction to pass through each other's grooves and then returned to the center. The triangular groove of the gasket 4 can be aligned with any outer hexagon of the steel sleeve 2. During this period, epoxy glue is applied to the boss of the center connecting column 3 for anti-loosening treatment; the steel sleeve 2 and the connecting end cover 1 are threadedly connected, and the external thread is coated with anaerobic thread glue for anti-loosening treatment; the rotation direction of the internal thread of the center connecting column 3 is consistent with the rotation direction of the thread of the steel sleeve 2.

[0027] The non-main vibration direction self-limiting metal vibration damping and buffering device of the utility model is generally arranged in a multi-branch array. Each vibration damping and buffering device is connected to the vibration-damped equipment and the overall adapter flange along the axial direction through upper and lower studs and threaded holes. The upper stud of the connecting end cover is installed through the through hole of the single-machine equipment through nuts, spring-flat washers, etc. During installation, a flat-blade screwdriver is used to clamp the flat groove on the top of the stud and tighten the nut; a threaded hole is reserved at the tail of the central connecting column, and the overall equipment is connected to the mounting hole of the central connecting column through the adapter flange with screws. During the tightening of the screws, the central connecting column will rotate. After deflecting to a certain small angle, the outer contour plane of the central connecting column contacts the relative position plane of the steel sleeve to form a limit, and then the vibration damping and buffering device can be installed and fixed in one direction.

[0028] In actual operating conditions, when the self-limiting metal vibration damping device in the non-primary vibration direction is providing vertical vibration reduction (in the primary vibration direction), the vibration impact energy is transmitted along the metal structure to the elastomeric wire mesh pad. The wire mesh pad dissipates energy through axial compression deformation and mesh friction. Vibration impact energy transmitted to the damped equipment is attenuated through the "flexible adapter." Vibration impact in other directions causes the central connecting column of the metal structure to oscillate, also dissipating energy by squeezing the wire mesh pad.

[0029] The non-primary vibration direction self-limiting metal vibration damping and buffering device of the utility model is mainly used for vibration damping and buffering of the explosive separation connection part of decoy bombs, and can effectively protect the structural reliability of the vibration-damped equipment under large-scale high-frequency impacts and large-displacement low-frequency impacts. According to the test results verified by actual vibration tests, it can effectively attenuate the impact of 40,000g (±6dB), and the shock isolation efficiency is greater than 90%. After the large-displacement low-frequency impact, the vibration damping and buffering device and the vibration-damped equipment are structurally intact and no plastic deformation occurs. The utility model can effectively improve the structural reliability of the explosive separation connection part of decoy bombs and the vibration-damped equipment under similar working conditions, and maintain the normal working requirements of the internal electrical products, pyrotechnics and key connection links under specific vibration and impact environments.

[0030] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A self-limiting metal vibration damping and buffering device in a non-main vibration direction, characterized in that: include: A connecting end cover (1), a steel sleeve (2), a central connecting column (3), a gasket (4), and two metal mesh pads (5), wherein the two metal mesh pads (5) are installed on the upper and lower surfaces of the middle boss of the central connecting column (3); the bottom end surface of the central connecting column (3) passes through the perforated surface of the steel sleeve (2); the inner thread of the central connecting column (3) is consistent with the thread of the steel sleeve (2); the corresponding positions of the central connecting column (3) and the steel sleeve (2) are plane-to-plane, and then connected with the gasket (4); the gasket (4) is a clamp structure with two 1 / 4 arc bosses, and will not be disengaged in the axial direction after being aligned with the central connecting column; the above-mentioned structural components are all metal components.

2. A self-limiting metal vibration damping and buffering device in a non-primary vibration direction according to claim 1, characterized in that: A slot is formed on the top of the stud of the connecting end cover (1).

3. The self-limiting metal vibration damping and buffering device in the non-main vibration direction according to claim 1 is characterized in that: The gasket (4) and the central connecting column (3) are both provided with a clamp structure having two 1 / 4 arc bosses at relative positions, and the outer ring surface of the gasket has two triangular grooves symmetrically distributed along the axial direction.

4. The self-limiting metal vibration damping and buffering device in the non-main vibration direction according to claim 1 is characterized in that: The central connecting column (3) is connected to the gasket (4) in a manner that two 1 / 4 arc bosses are rotated 90 degrees along the axial direction to pass through each other's grooves and then returned to the original position, and the triangular groove of the gasket (4) is aligned with any outer hexagonal edge of the steel sleeve (2).

5. The self-limiting metal vibration damping and buffering device in the non-main vibration direction according to claim 1 is characterized in that: The steel sleeve (2) and the connecting end cover (1) are connected by threads, and the external threads are coated with anaerobic thread glue for anti-loosening treatment.

6. The self-limiting metal vibration damping and buffering device in the non-main vibration direction according to claim 1, characterized in that: The device is arranged in a multi-branch array and connected to the vibration-damped equipment and the overall adapter flange through upper and lower studs and threaded holes along the axial direction.

7. A self-limiting metal vibration damping and buffering device in a non-primary vibration direction according to claim 6, characterized in that: A threaded hole is reserved at the tail of the center connecting column, and the overall equipment is connected to the mounting hole of the center connecting column by screws passing through the adapter flange. During the tightening of the screws, the center connecting column rotates. After deflecting at a certain small angle, the outer contour plane of the center connecting column contacts the relative position plane of the steel sleeve, forming a limit, so that the vibration damping and buffering device can be installed and fixed in one direction.

8. A self-limiting metal vibration damping and buffering device in a non-primary vibration direction according to any one of claims 1 to 7, characterized in that: The isolation efficiency is greater than 90%.

9. The self-limiting metal vibration damping and buffering device in the non-main vibration direction according to claim 8, characterized in that: The device can be installed blindly on one side when it plays a connecting role.

10. A self-limiting metal vibration damping and buffering device in a non-main vibration direction according to claim 9, characterized in that: When the device is vertically reducing vibration, the vibration impact energy is transmitted along the metal structure to the elastic metal wire mesh pad (5), and the metal wire mesh pad (5) dissipates energy through axial compression deformation and mesh friction, so that the vibration impact energy transmitted to the vibration-reduced equipment is attenuated; vibration impact in other directions will cause the central connecting column (3) of the metal structure to swing, and energy dissipation is achieved by squeezing the metal wire mesh pad.

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