Novel nonlinear rubber steel wire rope composite vibration isolator

Abstract

The invention discloses a novel nonlinear rubber steel wire rope composite vibration isolator, and relates to the field of vibration isolators, the novel nonlinear rubber steel wire rope composite vibration isolator comprises a lower clamping plate, an upper clamping plate, rubber and two groups of first steel wire ropes, and the tops and the bottoms of the two groups of first steel wire ropes are symmetrically mounted on the two sides of the upper clamping plate and the lower clamping plate; a gap is reserved between the rubber and the upper clamping plate. According to the novel non-linear rubber steel wire rope composite vibration isolator, when the amplitude of a crystal oscillator is small, vibration energy can be absorbed and dissipated through dry friction damping between the first steel wire ropes, the lower clamping plate, the first steel wire ropes, rubber and the upper clamping plate can generate large dynamic displacement, strong impact can be attenuated, and the vibration isolation effect is good. Meanwhile, a large amount of low-frequency and high-frequency vibration is absorbed and dissipated, and due to the fact that a steel wire rope vibration isolator is small in friction damping and poor in vibration isolation effect during resonance, under the large-amplitude condition, the overall elastic support can be enhanced through the arranged rubber.

Description

Technical Field

[0001] The invention relates to the field of vibration isolators, in particular to a novel nonlinear rubber-steel wire rope composite vibration isolator. Background Art

[0002] A crystal oscillator is a quartz crystal resonator, often labeled an external crystal oscillator because the crystal oscillator unit is often connected externally to a circuit. It is a passive electronic component that utilizes the piezoelectric effect of a quartz crystal to generate a high-precision oscillation frequency. It primarily consists of a quartz crystal, a base, a housing, silver glue, and other components. Depending on the lead structure, it can be categorized as either a direct-insert or surface-mount type.

[0003] Anti-vibration crystal oscillators are mainly composed of low phase noise crystal oscillators and vibration reduction systems. The crystal in a low phase noise crystal oscillator is a vibration-sensitive device, and its phase noise will be greatly deteriorated by vibration.

[0004] When used onboard, the vibration conditions of the radar's low-power radio frequency unit are relatively complex. Due to the force-frequency characteristic, many parameters of the quartz crystal will change under vibration conditions, thereby deteriorating the product's frequency stability index, namely the phase noise index. Therefore, it is necessary to design high-stability crystal oscillators for vibration resistance in the product.

[0005] Currently, the mainstream vibration reduction methods are wire rope and rubber material. Wire rope isolators are nonlinear, combining high static and low dynamic stiffness with dry friction damping, offering a wide isolation range. However, their elastic support is somewhat weak. Rubber isolators, on the other hand, have a narrow operating frequency range, as the elasticity and damping properties of the rubber material are significantly affected by ambient temperature, requiring regular replacement.

[0006] Therefore, it is necessary to propose a new type of nonlinear rubber-steel wire rope composite vibration isolator to solve the above problems. Summary of the Invention

[0007] The main purpose of the present invention is to provide a novel nonlinear rubber-steel wire rope composite vibration isolator, which can effectively solve the problems in the background technology.

[0008] To achieve the above object, the technical solution adopted by the present invention is: A novel nonlinear rubber-steel cable composite vibration isolator includes a lower plate, an upper plate, rubber, and first steel cables. The first steel cables are provided in two groups, with the tops and bottoms of the two groups symmetrically mounted on both sides of the upper and lower plates, and a gap is left between the rubber and the upper plate. It also includes a base and a top plate, wherein a first vibration isolation spring, a connecting seat, and a second steel wire rope are symmetrically installed on two sides of opposite sides of the base and the top plate, a movable groove is opened at the top of the inner cavity of the base, a fourth vibration isolation spring is installed in the inner cavity of the movable groove, and a bearing seat is attached to the top of the fourth vibration isolation spring; Auxiliary vibration isolation components are symmetrically installed on both sides of the base and the top plate, and movable frames are installed in the inner cavities of the auxiliary vibration isolation components at the top and bottom. Second vibration isolation springs are symmetrically installed on the top and bottom of the movable frames.

[0009] Preferably, there are four connecting seats, which are respectively installed on the sides of the four auxiliary vibration isolation components, and second steel wire ropes are symmetrically installed on the opposite sides of the top and bottom connecting seats.

[0010] Preferably, the first vibration isolation springs are symmetrically arranged on the opposite sides of the top and bottom connecting seats, and the opposite sides of the first vibration isolation springs are symmetrically installed on the opposite side of the top plate and the base.

[0011] Preferably, guide grooves are symmetrically provided around the inner cavity of the movable groove, a second guide rod is installed in the inner cavity of the guide groove, and guide blocks are symmetrically installed around the bearing seat, the guide blocks are movably connected in the inner cavity of the guide groove and sleeved on the outer wall of the second guide rod.

[0012] Preferably, the bottom of the bearing seat is attached to the top of the fourth vibration isolation spring, and the bearing seat is installed on the bottom of the lower clamping plate.

[0013] Preferably, the second vibration isolation spring is movably connected in the inner cavity of the auxiliary vibration isolation component, and a through slot is provided at the auxiliary vibration isolation component. There are three through slots at the auxiliary vibration isolation component, and first guide rods are installed in the inner cavities of the three through slots.

[0014] Preferably, a third vibration isolation spring is wound around the outer wall of the first guide rod in the middle, and the opposite sides of the inner cavity of the auxiliary vibration isolation assembly at the top and bottom are movably connected in the inner cavity of the through groove and sleeved on the outer wall of the first guide rod, and the top and bottom of the third vibration isolation spring are connected to the opposite sides of the auxiliary vibration isolation assembly at the top and bottom.

[0015] Compared with the prior art, the present invention provides a new nonlinear rubber-steel wire rope composite vibration isolator with the following beneficial effects: 1. This new nonlinear rubber-wire rope composite vibration isolator, through the design of the lower plywood, first steel wire rope, rubber and upper plywood, can use the dry friction damping between each strand of the first steel wire rope to absorb and dissipate vibration energy when the crystal oscillator amplitude is small. The lower plywood, first steel wire rope, rubber and upper plywood can produce a large dynamic displacement, which can attenuate strong impacts, and at the same time absorb and dissipate a large amount of low-frequency and high-frequency vibrations. Because the steel wire rope vibration isolator has a small friction damping, the vibration isolation effect during resonance is poor. Under large amplitude conditions, the rubber is provided to a certain extent to enhance the elastic support of the system, preventing the system instability caused by excessive deformation of the lower plywood, first steel wire rope, rubber and upper plywood. At the same time, the rubber is made of a cellular rubber foam material with stable chemical properties, strong anti-aging ability, low relative density and high energy absorption.

[0016] 2. In this new nonlinear rubber-steel rope composite vibration isolator, the lower plate, the first steel rope, the rubber and the upper plate are within the elastic limit. The rubber can significantly attenuate the vibration transmitted to the inner core, thereby improving the crystal oscillator index.

[0017] 3. This new nonlinear rubber-steel wire rope composite vibration isolator can further improve the vibration isolation effect through the second steel wire rope and the first vibration isolation spring when the crystal oscillation amplitude is large. The connecting seat can support the first vibration isolation spring and the second steel wire rope. When the top plate, the lower clamping plate, the first steel wire rope and the rubber are subjected to vibration isolation treatment, the vibration can be transmitted to the base and the top plate. Based on this, the base and the top plate can be assisted in vibration isolation treatment through the second steel wire rope and the first vibration isolation spring.

[0018] 4. This new nonlinear rubber-steel wire rope composite vibration isolator can support the lower splint through the provided bearing seat. In conjunction with the provided fourth vibration isolation spring, the vibration isolation effect of the lower splint can be improved. Through the provided guide groove, when the bearing seat vibrates along with the lower splint, the guide block can be driven to move in the inner cavity of the guide groove and the outer wall of the second guide rod. Based on this, its stability can be improved and the bearing seat can be positioned at the same time.

[0019] 5. This new nonlinear rubber-steel wire rope composite vibration isolator is divided into a top and a bottom part through the auxiliary vibration isolation component. When the lower splint, the first steel wire rope, the rubber and the upper splint are subjected to vibration isolation treatment, their vibration will also be transmitted to the auxiliary vibration isolation component through the base and the top plate. At this time, the auxiliary vibration isolation component can move up and down on the outer wall of the movable frame. When its inner cavity contacts the second vibration isolation spring, it can play a certain vibration isolation role. When the auxiliary vibration isolation component moves, it will simultaneously move in the inner cavity of the through groove and the outer wall of the first guide rod, and at the same time squeeze the third vibration isolation spring. The third vibration isolation spring can improve the vibration isolation effect while facilitating the subsequent reset of the auxiliary vibration isolation component. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the rubber of the present invention; Figure 2 It is a structural schematic diagram of the base of the present invention; Figure 3 It is a structural schematic diagram of the inner cavity of the movable groove of the present invention; Figure 4 It is a structural schematic diagram of the bearing seat of the present invention; Figure 5 It is a structural schematic diagram of the auxiliary vibration isolation component of the present invention.

[0021] In the figure: 1. Base; 2. Top plate; 3. Lower clamping plate; 4. First vibration isolation spring; 5. Rubber; 6. Upper clamping plate; 7. First vibration isolation spring; 8. Connecting seat; 9. Second vibration isolation spring; 10. Auxiliary vibration isolation assembly; 11. Movable frame; 12. Second vibration isolation spring; 13. Through groove; 14. First guide rod; 15. Third vibration isolation spring; 16. Movable groove; 17. Fourth vibration isolation spring; 18. Guide groove; 19. Bearing seat; 20. Guide block; 21. Second guide rod. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] Example 1: like Figure 1 As shown, a novel nonlinear rubber-steel cable composite vibration isolator includes a lower plywood 3, an upper plywood 6, rubber 5, and a first steel cable 4. The first steel cable 4 has two groups, and the top and bottom of the two groups of first steel cables 4 are symmetrically installed on both sides of the upper plywood 6 and the lower plywood 3. A gap is left between the rubber 5 and the upper plywood 6. The first steel wire rope 4 is drum-shaped, and the rubber 5 is vulcanized rubber, which is vulcanized on the top of the lower clamping plate 3; Through the design of the lower splint, the first steel wire rope, the rubber and the upper splint, when the amplitude of the crystal oscillator is small, the dry friction damping between the strands of the first steel wire rope can be used to absorb and dissipate the vibration energy. The lower splint, the first steel wire rope, the rubber and the upper splint can produce a large dynamic displacement, which can attenuate strong impacts, and absorb and dissipate a large amount of low-frequency and high-frequency vibrations. Because the steel wire rope vibration isolator has a small friction damping, the vibration isolation effect during resonance is poor. Under large amplitude conditions, the elastic support of the system is enhanced to a certain extent by the provision of rubber, which prevents the system from being instable due to excessive deformation of the lower splint, the first steel wire rope, the rubber and the upper splint. At the same time, the rubber is made of a multi-cellular rubber foam material with stable chemical properties, strong anti-aging ability, low relative density and large energy absorption. The lower splint, the first steel wire rope, the rubber and the upper splint are within the elastic limit, and the rubber can significantly attenuate the vibration transmitted to the inner core. Based on this, the crystal oscillator indicators can be improved. When the crystal oscillator amplitude is increased, the vibration isolation effect can be further improved by setting the second steel wire rope and the first vibration isolation spring. The setting connecting seat can support the first vibration isolation spring and the second steel wire rope. When the top plate, the lower clamping plate, the first steel wire rope and the rubber are subjected to vibration isolation treatment, the vibration can be transmitted to the base and the top plate. Based on this, the base and the top plate can perform auxiliary vibration isolation treatment through the second steel wire rope and the first vibration isolation spring.

[0024] Example 2: like Figure 1-Figure 4 As shown, a novel nonlinear rubber-steel wire rope composite vibration isolator also includes a base 1 and a top plate 2. A first vibration isolation spring 7, a connecting seat 8 and a second steel wire rope 9 are symmetrically installed on both sides of the opposite side of the base 1 and the top plate 2. A movable groove 16 is opened at the top of the inner cavity of the base 1, and a fourth vibration isolation spring 17 is installed in the inner cavity of the movable groove 16. The top of the fourth vibration isolation spring 17 is fitted with a bearing seat 19. There are four connecting seats 8, and the four connecting seats 8 are respectively installed on the sides of the four auxiliary vibration isolation components 10. The second steel wire rope 9 is symmetrically installed on the opposite side of the top and bottom connecting seats 8. The first vibration isolation spring 7 is symmetrically arranged on the opposite side of the bottom connecting seat 8, and the opposite sides of the top and bottom first vibration isolation springs 7 are symmetrically installed on the opposite side of the top plate 2 and the base 1. Guide grooves 18 are symmetrically opened around the inner cavity of the movable groove 16, and a second guide rod 21 is installed in the inner cavity of the guide groove 18. Guide blocks 20 are symmetrically installed around the bearing seat 19. The guide blocks 20 are movably connected in the inner cavity of the guide groove 18 and sleeved on the outer wall of the second guide rod 21. The bottom of the bearing seat 19 is attached to the top of the fourth vibration isolation spring 17, and the bearing seat 19 is installed at the bottom of the lower splint 3; The supporting seat is provided to support the lower splint, and the fourth vibration isolation spring is provided to improve the vibration isolation effect of the lower splint. Through the guide groove provided, when the supporting seat vibrates along with the lower splint, the guide block can be driven to move in the inner cavity of the guide groove and the outer wall of the second guide rod. Based on this, its stability can be improved, and the supporting seat can be positioned at the same time.

[0025] Example 3: like Figure 2 、 Figure 5As shown, a novel nonlinear rubber-steel wire rope composite vibration isolator is provided, wherein auxiliary vibration isolation components 10 are symmetrically installed on both sides of a base 1 and a top plate 2, movable frames 11 are installed in the inner cavities of the top and bottom auxiliary vibration isolation components 10, second vibration isolation springs 12 are symmetrically installed on the top and bottom of the movable frames 11, and the second vibration isolation springs 12 are movably connected in the inner cavity of the auxiliary vibration isolation component 10, a through slot 13 is provided at the auxiliary vibration isolation component 10, and there are three through slots 13 at the auxiliary vibration isolation component 10, and a first guide rod 14 is installed in the inner cavity of each of the three through slots 13, and a third vibration isolation spring 15 is wound around the outer wall of the middle first guide rod 14, and opposite sides of the inner cavities of the top and bottom auxiliary vibration isolation components 10 are movably connected in the inner cavity of the through slot 13 and sleeved on the outer wall of the first guide rod 14, and the top and bottom of the third vibration isolation spring 15 are connected to opposite sides of the top and bottom auxiliary vibration isolation components 10; The auxiliary vibration isolation component is divided into a top and a bottom. When the lower splint, the first steel wire rope, the rubber and the upper splint are subjected to vibration isolation treatment, their vibration will also be transmitted to the auxiliary vibration isolation component through the base and the top plate. The auxiliary vibration isolation component can now move up and down on the outer wall of the movable frame. When its inner cavity contacts the second vibration isolation spring, it can play a certain vibration isolation role. When the auxiliary vibration isolation component moves, it will simultaneously move in the inner cavity of the through groove and the outer wall of the first guide rod, and at the same time squeeze the third vibration isolation spring. The third vibration isolation spring can improve the vibration isolation effect while also facilitating the subsequent resetting of the auxiliary vibration isolation component.

[0026] It should be noted that the present invention is a novel nonlinear rubber-steel wire rope composite vibration isolator, which is connected to the crystal oscillator as a whole when in use. When the crystal oscillator vibrates, the amplitude will be transmitted to the lower splint 3, the upper splint 6, the base 1 and the top plate 2. At this time, the lower splint 3 and the upper splint 6 will be subjected to vibration isolation treatment through the first steel wire rope 4 and the rubber 5. When the lower splint 3 vibrates, the amplitude will be transmitted to the bearing seat 19 through the bearing seat 19. At this time, the bearing seat 19 will drive the guide block 20 to move in the inner cavity of the guide groove 18 and slide on the outer wall of the second guide rod 21. At the same time, the amplitude will be transmitted to the fourth vibration isolation spring 17, and the fourth vibration isolation spring 17 can reduce the consumption of the amplitude. The amplitude transmitted to the top plate 2 and the base 1 will be transmitted to the auxiliary vibration isolation assembly 10 and the first vibration isolation spring 7 respectively. After the first vibration isolation spring 7 transmits the amplitude to the connecting seat 8, it cooperates with the second wire rope 9 to play an auxiliary vibration isolation role. When the auxiliary vibration isolation component 10 is subjected to vibration, it will move on the outer wall of the movable frame 11, and at the same time move on the inner cavity of the through slot 13 and the outer wall of the first guide rod 14. The auxiliary vibration isolation component 10 will squeeze the second vibration isolation spring 12 and the third vibration isolation spring 15, thereby completely consuming them.

[0027] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel nonlinear rubber-steel wire rope composite vibration isolator, comprising a lower clamping plate (3), an upper clamping plate (6), rubber (5) and a first steel wire rope (4), characterized in that: There are two groups of the first steel wire ropes (4), and the tops and bottoms of the two groups of the first steel wire ropes (4) are symmetrically mounted on both sides of the upper clamping plate (6) and the lower clamping plate (3), and a gap is left between the rubber (5) and the upper clamping plate (6); It also includes a base (1) and a top plate (2), wherein a first vibration isolation spring (7), a connecting seat (8) and a second steel wire rope (9) are symmetrically installed on two sides of opposite sides of the base (1) and the top plate (2), a movable groove (16) is opened at the top of the inner cavity of the base (1), a fourth vibration isolation spring (17) is installed in the inner cavity of the movable groove (16), and a bearing seat (19) is attached to the top of the fourth vibration isolation spring (17); Auxiliary vibration isolation components (10) are symmetrically installed on both sides of the base (1) and the top plate (2), and movable frames (11) are installed in the inner cavities of the auxiliary vibration isolation components (10) at the top and bottom. Second vibration isolation springs (12) are symmetrically installed at the top and bottom of the movable frame (11).

2. The novel nonlinear rubber-steel wire rope composite vibration isolator according to claim 1 is characterized in that: There are four connecting seats (8), and the four connecting seats (8) are respectively installed on the sides of the four auxiliary vibration isolation components (10). Second steel wire ropes (9) are symmetrically installed on the opposite sides of the top and bottom connecting seats (8).

3. The novel nonlinear rubber-steel wire rope composite vibration isolator according to claim 2 is characterized in that: The first vibration isolation spring (7) is symmetrically arranged on the opposite sides of the top and bottom connecting seats (8), and the opposite sides of the first vibration isolation spring (7) are symmetrically installed on the opposite sides of the top plate (2) and the base (1).

4. The novel nonlinear rubber-steel wire rope composite vibration isolator according to claim 1 is characterized in that: Guide grooves (18) are symmetrically provided around the inner cavity of the movable groove (16), a second guide rod (21) is installed in the inner cavity of the guide groove (18), and guide blocks (20) are symmetrically installed around the bearing seat (19), the guide blocks (20) are movably connected in the inner cavity of the guide groove (18) and sleeved on the outer wall of the second guide rod (21).

5. The novel nonlinear rubber-steel wire rope composite vibration isolator according to claim 4 is characterized in that: The bottom of the bearing seat (19) is fitted on the top of the fourth vibration isolation spring (17), and the bearing seat (19) is installed on the bottom of the lower clamping plate (3).

6. The novel nonlinear rubber-steel wire rope composite vibration isolator according to claim 1 is characterized in that: The second vibration isolation spring (12) is movably connected in the inner cavity of the auxiliary vibration isolation component (10), and a through slot (13) is provided at the auxiliary vibration isolation component (10). There are three through slots (13) at the auxiliary vibration isolation component (10), and a first guide rod (14) is installed in the inner cavity of each of the three through slots (13).

7. The novel nonlinear rubber-steel wire rope composite vibration isolator according to claim 6 is characterized in that: A third vibration isolation spring (15) is wound around the outer wall of the first guide rod (14) in the middle, and opposite sides of the inner cavity of the top and bottom auxiliary vibration isolation components (10) are movably connected in the inner cavity of the through groove (13) and sleeved on the outer wall of the first guide rod (14), and the top and bottom of the third vibration isolation spring (15) are connected to opposite sides of the top and bottom auxiliary vibration isolation components (10).

Images