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

Abstract

The invention provides a non-main vibration direction self-limiting metal vibration reduction buffering device. The non-main vibration direction self-limiting metal vibration reduction buffering device comprises two metal wire mesh vibration reduction pads, a connecting end cover, a steel sleeve, a center 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. Structurally, flexibility in the main vibration direction is guaranteed, self-limiting in the radial direction can be achieved, and single-side blind installation can be achieved 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 invention belongs to the technical field of shock absorption and buffering, and in particular relates to a shock absorption and buffering device with an all-metal structure. Background Art

[0002] On some types of weapons, due to the existence of mechanical environments such as large-scale high-frequency explosion shocks and large-displacement low-frequency shocks, the decoy bomb separation and connection parts work in poor conditions, reducing the reliability of the product structure. To address these problems, the overall department will improve the design by strengthening the overall structural rigidity or adding vibration-damping elastic elements to reduce the vibration and shock environment after the whole machine is installed, and meet the normal working requirements of the internal electrical products, pyrotechnics and key connection links.

[0003] Increasing structural rigidity will increase the size of some structural parts, violating the principle of lightweight design, and thus affecting the performance of the whole 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 reduction performance or even failure, which cannot fully meet the environmental requirements of the whole 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-isolating 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-isolating 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 the present invention 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-main 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 of the product; from the performance point of view, the vibration damping element with friction damping can dissipate the vibration impact energy; in the process of participating in the final assembly of a single machine, the vibration damping and buffering device does not need to be disassembled through structural design, and can be delivered with the single machine. It can be installed on one side without the help of auxiliary tooling in a narrow interface, 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 the explosive separation connection part of decoy bombs. The device is an all-metal structure containing metal wire mesh material, and 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 the metal wire mesh material of 15% to 20% enables the present invention to effectively dissipate the vibration impact energy of the entire equipment in the corresponding mechanical environment and maintain the integrity and reliability of its structure.

[0006] The metal vibration damping and buffering device of the present invention comprises two metal wire mesh vibration damping pads, a connecting end cover, a steel sleeve, a central connecting column, and a gasket. The connecting end cover is processed with a stud, and a slot is opened on the top for installation. The two metal wire mesh vibration damping pads are symmetrically distributed on the upper and lower surfaces of the central connecting column. The connecting end cover 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 be disengaged 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 transfer 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-blade screwdriver is used to clamp the flat-blade groove at the top of the stud and tighten the nut. A threaded hole is reserved at the tail of the central connecting column. The overall equipment is connected to the mounting hole of the central connecting column through the screw passing through the transfer flange. From then on, the metal vibration damping and buffering device of the present invention connects the vibration damped equipment and the overall transfer flange. Two symmetrical planes are cut out in the middle of the central connecting column, and small planes are also reserved at the corresponding positions of the steel sleeve. The two parts are clearance-matched. The central 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, which limits the rotation of the central connecting column and the product can be installed smoothly. The rotation direction of the thread of the central connecting column is consistent with that 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 present invention are all metal components.

[0009] The non-main vibration direction self-limiting metal vibration damping buffer device of the present invention provides supporting 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 of the component structure based on the principle of the present invention should not be excluded from the protection scope of the present invention.

[0011] The beneficial effects of the present invention are as follows:

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

[0013] 2. The elastic components and damping elements of the present invention are made of metal materials and have good environmental weather resistance in high and low temperatures (-15°C to 300°C) and certain salt spray and mold environments;

[0014] 3. The first-order natural frequency of the present invention 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 constituting a part of the present 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 2 is an appearance diagram of a self-limiting metal vibration damping and buffering device in a non-main vibration direction according to an embodiment of the present invention;

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

[0018] Figure 3 This is an external view of a 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 present invention;

[0019] Figure 4 This is an appearance diagram of a gasket of a self-limiting metal vibration damping buffer device in a non-main vibration direction according to an embodiment of the present invention;

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

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

[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 enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments 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 creative work should fall within the scope of protection of the present invention.

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

[0025] The present invention provides a self-limiting metal vibration damping and buffering device in a non-main vibration direction, such as Figure 1 As shown, it includes a connecting end cover 1, a steel sleeve 2, a central connecting column 3, a gasket 4, and two metal mesh pads 5. There are two clamp structures with 1 / 4 arc bosses at the relative positions of the gasket and the central connecting column, and two triangular grooves are symmetrically distributed along the axial direction on the outer ring surface of the gasket; a straight groove is opened on the top of the connecting end cover stud; the relative positions of the steel sleeve and the central connecting column are all flat.

[0026] The self-limiting metal vibration damping and buffering device in the non-main vibration direction of the present invention has two metal mesh pads 5 installed on the upper and lower surfaces of the middle boss of the central connecting column 3; the bottom end face of the central connecting column 3 passes through the perforated surface of the steel sleeve 2, and the corresponding positions of the central connecting column 3 and the steel sleeve 2 are 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 return 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 central 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 central connecting column 3 is consistent with the rotation direction of the thread of the steel sleeve 2.

[0027] The self-limiting metal vibration damping and buffering device in the non-main vibration direction of the present invention is generally arranged in an array and used in multiple ways. 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 stand-alone equipment through nuts, spring-flat washers, etc. During installation, a flat-blade screwdriver is used to clamp the flat-blade 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 by screws passing through the adapter flange. During the tightening of the screws, the central connecting column will rotate. After deflecting by 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, so that the vibration damping and buffering device can be installed and fixed in one direction.

[0028] In actual working environment, when the self-limiting metal vibration damping buffer device in the non-main vibration direction is vertically damping (main vibration direction), the vibration impact energy is transmitted along the metal structure to the elastic metal mesh pad, and the metal mesh pad dissipates energy through axial compression deformation, mesh friction, etc., and the vibration impact energy transmitted to the damped equipment is attenuated through the "flexible adapter". The vibration impact in other directions will cause the central connecting column of the metal structure to swing, and energy dissipation is also achieved by squeezing the metal mesh pad.

[0029] The self-limiting metal vibration damping and buffering device in the non-main vibration direction of the present invention is mainly used for vibration damping and buffering of the explosive separation connection parts of decoy bombs, and can effectively protect the structural reliability of the 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 damped equipment are structurally intact without plastic deformation. The present invention can effectively improve the structural reliability of the damped equipment under explosive separation connection parts of decoy bombs and similar working conditions, and maintain the normal working requirements of internal electrical products, pyrotechnics and key connection links under specific vibration and impact environments.

[0030] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one 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 will not be limited to the embodiments shown herein, but rather 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 gaskets (5), wherein the two metal mesh gaskets (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 hole surface of the steel sleeve (2); the rotation direction of the internal thread of the central connecting column (3) is consistent with the rotation direction of 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 and installed; the above-mentioned structural components are all composed of metal parts.

2. A self-limiting metal vibration damping and buffering device in a non-main 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 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 such a way that two 1 / 4 arc bosses are first rotated 90 degrees along the axial direction to pass through each other's grooves and then return 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 is characterized in that: The device is arranged in a multi-branch array and connected to the vibration-damped equipment and the overall adapter flange along the axial direction through upper and lower studs and threaded holes.

7. A self-limiting metal vibration damping and buffering device in a non-main vibration direction according to claim 6, characterized in that: 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 by screws passing through the adapter flange. The center connecting column rotates during the tightening of the screws. 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 to form 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-main vibration direction according to claims 1-7, characterized in that: The isolation efficiency is greater than 90%.

9. A self-limiting metal vibration damping and buffering device in a non-main vibration direction according to claims 1-8, characterized in that: The device can be installed blindly on one side when it is used for connection.

10. A self-limiting metal vibration damping and buffering device in a non-main vibration direction according to claims 1-9, characterized in that: When the device is vertically reducing vibration, the vibration impact energy is transmitted along the metal structure to the elastomeric metal wire mesh pad (5), and the metal wire mesh pad (5) dissipates energy through axial compression deformation and wire mesh friction, so that the vibration impact energy transmitted to the vibration-reduced equipment is attenuated; vibration impacts 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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