阅读说明：本技术 一种全封闭式低频抗冲击底部隔振器 (Totally enclosed low frequency bottom isolator that shocks resistance ) 是由 程昌利 于 2020-04-24 设计创作，主要内容包括：本发明涉及一种全封闭式低频抗冲击底部隔振器,其包括芯轴、弹性中间体和底座,弹性中间体由橡胶材料制成,弹性中间体一端开设有第一环槽,另一端开设有第二环槽,芯轴一端穿设进弹性中间体内,另一端卡设在第一环槽内,底座一端插设进第二环槽内,弹性中间体内部形成有隔振腔,隔振腔内设置有用于隔振的阻尼组件,阻尼组件套设在芯轴穿设进弹性中间体的一端并与芯轴连接,底座背离弹性中间体的一侧还设有底部弹性体,底座背离弹性体的一端还连接有用于固定底部弹性体的封盖,芯轴、弹性中间体和底座之间通过硫化处理进行固定。本发明具有对冲击进行良好缓冲隔振的效果。(The invention relates to a totally enclosed low-frequency shock-resistant bottom vibration isolator which comprises a mandrel, an elastic intermediate body and a base, wherein the elastic intermediate body is made of rubber materials, one end of the elastic intermediate body is provided with a first annular groove, the other end of the elastic intermediate body is provided with a second annular groove, one end of the mandrel penetrates into the elastic intermediate body, the other end of the mandrel is clamped in the first annular groove, one end of the base is inserted into the second annular groove, a vibration isolation cavity is formed in the elastic intermediate body, a damping assembly for isolating vibration is arranged in the vibration isolation cavity, the damping assembly is sleeved at one end, penetrating into the elastic intermediate body, of the mandrel and connected with the mandrel, a bottom elastic body is further arranged on one side, deviating from the elastic intermediate body, of the base, a sealing cover for fixing the bottom elastic body is further. The invention has the effect of good buffering and vibration isolation for impact.)

1. The utility model provides a totally enclosed low frequency bottom isolator that shocks resistance which characterized in that: including dabber (1), elasticity midbody (2) and base (3), dabber (1) is worn to establish in elasticity midbody (2), elasticity midbody (2) are made by rubber materials, dabber (1) is kept away from the one end of wearing to establish into elasticity midbody (2) and is seted up first annular (21), base (3) have been seted up second annular (22) towards the one end of elasticity midbody (2), elasticity midbody (2) inside is formed with vibration isolation chamber (23), be provided with damping component (4) that are used for the vibration isolation in vibration isolation chamber (23), damping component (4) cover is established at the one end that elasticity midbody (2) were worn to establish in dabber (1) and is connected with dabber (1), base (3) are worn to be equipped with bottom elastomer (5) in deviating from one side of elasticity midbody (2), the one end that base (3) deviate from the elastomer still is connected with closing cap (6) that are used for shutoff base (3), one side that bottom elastomer (5) deviate from closing cap (6) and elasticity midbody (2) butt, the one end that first annular (21) and base (3) were seted up second annular (22) is all fixed through vulcanization with elasticity midbody (2) in dabber (1).

2. The fully enclosed low frequency impact resistant bottom isolator of claim 1 wherein: the damping assembly (4) comprises a positioning nut (41), a wear-resistant ring (42), a spring collar (43), a positioning gasket (44) and a compression spring (45), the spring retainer ring (43) is clamped between the wear-resisting ring (42) and the mandrel (1), one side of the spring collar (43) departing from the mandrel (1) is abutted with the wear-resistant ring (42), the compression spring (45), the positioning gasket (44) and the wear-resisting ring (42) clamped with the spring retainer ring (43) are all sleeved on the mandrel (1) which penetrates into the elastic intermediate body (2) and are sequentially distributed from top to bottom, the positioning nut (41) is in threaded connection with one end of the mandrel (1) far away from the first annular groove (21), the positioning nut (41) is also arranged in the wear-resisting ring (42) and the positioning gasket (44) in a penetrating way, the pressing spring (45) is also covered with a spring bushing (47), and the spring bushing (47) is arranged between the elastic intermediate body and the positioning gasket (44).

3. The fully enclosed low frequency impact resistant bottom isolator of claim 2 wherein: the damping assembly (4) further comprises a plurality of friction rings (46), the friction rings (46) are respectively arranged on two sides of the wear-resisting ring (42), and one sides, away from the wear-resisting ring (42), of the friction rings (46) on the two sides of the wear-resisting ring (42) are respectively in contact with the positioning gasket (44) and the positioning nut (41).

4. The fully enclosed low frequency impact resistant bottom isolator of claim 3 wherein: the wear-resisting ring (46) is a plurality of wear-resisting rings, the wear-resisting rings (46) are spliced in a mutually ending mode, and the wear-resisting ring (42) is made of a non-metal material.

5. The fully enclosed low frequency impact resistant bottom isolator of claim 4 wherein: wear-resisting ring (42) have seted up U type groove (48) towards one side inner wall of dabber (1), U type groove (48) groove depth is with spring rand (43) diameter ratio: 1.5:1.

6. The fully enclosed low frequency impact resistant bottom isolator of claim 5 wherein: the outer edges of two sides of the wear-resistant ring (42) are provided with round corners.

7. The fully enclosed low frequency impact resistant bottom isolator of claim 6 wherein: and a plurality of weight reduction grooves (24) are formed in the elastic intermediate body (2) along the circumferential array.

8. The fully enclosed low frequency impact resistant bottom isolator of claim 7 wherein: elastic intermediate body (2) extend towards damping component (4) and are formed with block portion (25), hold-down spring (45) keep away from the one end of locating pad (44) and insert outside establishing block portion (25), block portion (25) are the back taper.

9. The fully enclosed low frequency impact resistant bottom isolator of claim 8 wherein: sawtooth grooves (7) are formed in the two sides, in contact with the elastic intermediate body (2), of the mandrel (1) and the base (3).

10. The fully enclosed low frequency impact resistant bottom isolator of claim 9 wherein: and a plurality of mounting holes (8) for auxiliary mounting are formed in the circumferential array on the side, away from each other, of the mandrel (1) and the positioning nut (41).

Technical Field

The invention relates to the technical field of vibration isolators, in particular to a fully-enclosed low-frequency shock-resistant bottom vibration isolator.

Background

The vibration isolator can effectively avoid the damage of a strong impact environment to electronic equipment, and particularly military electronic equipment is easy to damage and lose effectiveness once being subjected to strong impact, so that weapon equipment loses fighting capacity. For example, the explosion shock waves of weapons such as anti-ship missiles and underwater torpedoes can damage electronic equipment on ships, so that the ships lose fighting capacity.

The existing bulletin numbers are: CN204512269U patent discloses a vibration isolator with no resonance peak and strong impact resistance, which comprises an installation base, a main shaft capable of moving up and down is arranged in a cavity of the installation base, a damper is arranged on the main shaft, the damper is used in cooperation with the inner wall of the cavity of the installation base, and a resonance suppression mechanism for suppressing the resonance of the vibration isolator is formed in the cavity of the installation base. When the vibration isolator vibrates vertically, the damping friction ring rubs with the straight line section of the inner cavity of the mounting seat to provide damping constant damping force; when the vibration isolator resonates, friction is generated between the damping friction ring and the inner cone cavity of the mounting seat.

In the prior art scheme, because the damper is used in the vibration isolator to resist impact, the damper is selected for use as a practical damping spring, and the longitudinal direction blocking rigidity and the transverse rigidity of the damping spring have large difference, so that the rigidity of the whole vibration isolator in three directions is inconsistent, the whole buffering vibration isolation effect is reduced, the good impact resistance effect cannot be achieved, and the vibration isolator is damaged.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a fully-enclosed low-frequency shock-resistant bottom vibration isolator which has equal rigidity in three directions, so that the whole body can have a good shock-resistant effect, and the effect that the vibration isolation damage of the whole vibration isolator is not easy to occur is achieved.

The above object of the present invention is achieved by the following technical solutions:

a totally enclosed low-frequency shock-resistant bottom vibration isolator comprises a core shaft, an elastic intermediate and a base, the mandrel is arranged in the elastic intermediate body in a penetrating way, the elastic intermediate body is made of rubber material, one end of the mandrel, far away from the elastic intermediate body in the penetrating way, is provided with a first annular groove, a second ring groove is arranged at one end of the base facing the elastic intermediate body, a vibration isolation cavity is formed inside the elastic intermediate body, the vibration isolation cavity is internally provided with a damping component for isolating vibration, the damping component is sleeved at one end of the mandrel penetrating into the elastic intermediate body and is connected with the mandrel, a bottom elastic body is arranged in one side of the base, which is far away from the elastic intermediate body in a penetrating way, one end of the base, which is far away from the elastic body, is also connected with a sealing cover used for sealing the base, one side that the bottom elastomer deviates from the closing cap butts with the elastic intermediate, the one end that first annular is seted up to the dabber and the base is seted up the second annular all is fixed through vulcanization with the elastic intermediate.

Further: damping subassembly includes set nut, wear ring, spring rand, positioning pad piece and pressure spring, the spring rand card is established between wear ring and dabber, the spring rand deviates from one side and the wear ring butt of dabber, pressure spring, positioning pad piece and the wear ring that the card was equipped with the spring rand are all established and are worn to establish on the dabber wears to advance the elasticity midbody and distribute down from last in proper order, set nut and the dabber keep away from the one end threaded connection of first annular, set nut still wears to establish in wear ring and positioning pad piece, pressure spring still covers outward and is equipped with spring bushing, spring bushing is between elasticity midbody and positioning pad piece.

Further: the damping assembly further comprises a plurality of friction rings, the friction rings are respectively arranged on two sides of the wear-resistant ring, and one side, deviating from the wear-resistant ring, of each friction ring on two sides of the wear-resistant ring is respectively abutted against the positioning gasket and the positioning nut.

Further: the wear-resisting ring is a plurality of, a plurality of wear-resisting rings are mutually spliced in a terminating mode, and the wear-resisting rings are made of non-metallic materials.

Further: wear-resisting ring has seted up U type groove towards one side inner wall of dabber, U type groove depth is with spring rand diameter ratio: 1.5:1.

Further: the outer edges of the two sides of the wear-resistant ring are provided with round corners.

Further: and a plurality of weight reduction grooves are formed in the elastic middle body along the circumferential array.

Further: the elastic intermediate body extends towards the damping assembly to form a clamping portion, one end, far away from the positioning gasket, of the compression spring is inserted outside the clamping portion, and the clamping portion of the clamping portion is in an inverted cone shape.

Further: the two sides of the mandrel, the base and the elastic intermediate body are both provided with sawtooth grooves.

Further: and a plurality of mounting holes for auxiliary mounting are formed in the equal circumferential array on one side of the mandrel and one side of the positioning nut, which deviate from each other.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the mandrel, the base and the elastic intermediate are vulcanized, so that an integral body which is not easy to separate is formed, the elastic intermediate has deformation capacity, the damping assembly positioned in the vibration isolation cavity has the effect of buffering and vibration isolation, the elastic intermediate and the damping assembly perform synergistic action to buffer and isolate vibration when impact is generated, and the bottom elastic body is further arranged in the base, so that the effect of overall buffering and vibration isolation is further improved, and the impact can be maximally solved;

2. through the action of the wear-resistant ring and the wear-resistant ring in the damping assembly, the impact in the vertical direction and the horizontal direction is buffered and isolated, and the outer edge of the wear-resistant ring is provided with a fillet, so that when the swing is generated, the elastic intermediate body is abutted against the wear-resistant ring, and the vibration buffering and isolation for the swing is formed;

3. the rigidity of the elastic intermediate body is reduced by arranging the weight reduction grooves on the elastic intermediate body, so that the elastic intermediate body can better buffer and isolate vibration when being impacted.

Drawings

Fig. 1 is a schematic structural diagram of a low-frequency impact-resistant bottom vibration isolator embodying an integral fully enclosed type.

FIG. 2 is a schematic cross-sectional view embodying an internal damping assembly.

FIG. 3 is a schematic diagram showing the structure of an elastic intermediate.

Fig. 4 is a schematic view showing the structure of the jaw.

In the figure, 1, a mandrel; 2. an elastic intermediate; 21. a first ring groove; 22. a second ring groove; 23. a vibration isolation chamber; 24. a weight reduction groove; 25. a fastening part; 3. a base; 4. a damping assembly; 41. positioning a nut; 42. a wear ring; 43. a spring collar; 44. positioning the gasket; 45. a compression spring; 46. a wear ring; 47. an elastic bushing; 48. a U-shaped groove; 5. a bottom elastomer; 51. a vibration isolation part; 52. an annular connecting portion; 6. sealing the cover; 7. a sawtooth groove; 8. mounting holes; 9. a claw is provided.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the totally enclosed low-frequency shock-resistant bottom vibration isolator disclosed by the invention comprises a mandrel 1, an elastic intermediate 2 and a base 3, wherein the elastic intermediate 2 is made of rubber material, the mandrel 1 is arranged in the elastic intermediate 2 in a penetrating manner, one end of the elastic intermediate 2, which is far away from the mandrel 1, is connected with the base 3, the outer wall of one end of the mandrel 1, which is far away from the elastic intermediate 2, is provided with a first ring groove 21, the outer wall of one end of the base 3, which is connected with the elastic intermediate 2, is provided with a second ring groove 22, the elastic intermediate 2, the mandrel 1 and the base 3 are connected and fixed through vulcanization treatment, the vulcanization treatment part is the position provided with the first ring groove 21 and the second ring groove 22, so that the mandrel 1 and the base 3 are not easy to separate from the elastic intermediate 2, and sawtooth grooves 7 are formed on both sides of the mandrel 1 and the base 3, and the connection firmness degree of the elastic, and the integral sealing performance is improved, so that the whole body is not easy to have the water seepage phenomenon in the use process, the elastic intermediate body 2 is made of a rubber material, the integral three-dimensional rigidity keeps the same, and the deformation of the elastic intermediate body 2 is large when the elastic intermediate body is impacted when the elastic intermediate body bears the impact, so that the optimal impact resistance can be realized.

Referring to fig. 2, a vibration isolation cavity 23 is formed inside the elastic intermediate body 2, a damping assembly 4 for vibration isolation is arranged in the vibration isolation cavity 23, the damping assembly 4 includes a positioning nut 41, wear-resistant rings 42, a spring collar 43, a positioning gasket 44 and a compression spring 45, the wear-resistant rings 42 are made of a non-metal material, in this embodiment, the wear-resistant rings are preferably made of a nylon material, and may also be made of a polytetrafluoroethylene material, the wear-resistant rings 42 are multiple, the wear-resistant rings 42 are preferably connected in a tail manner to form a complete ring, in this embodiment, the wear-resistant rings 42 are preferably two, the two semi-circular ring type wear-resistant rings 42 are connected in a tail manner to form a complete ring, a U-shaped groove 48 is formed in one side of the wear-resistant ring 42 facing the mandrel: 1.5: 1;

the spring clamping ring 43 is clamped between the wear-resisting ring 42 and the mandrel 1 and is positioned in the U-shaped groove 48, so that the wear-resisting ring 42 is tightened under the action of the spring clamping ring 43, damping force can be formed between the wear-resisting ring 42 and the elastic intermediate body 2, and the wear-resisting rings 42 with the U-shaped grooves 48 of different depths are selected according to different diameters of the spring clamping ring 43, so that the optimal tightening state is achieved, and the optimal damping force is provided.

Referring to fig. 2, the wear-resistant ring 42 clamped with the spring collar 43, the pressing spring 45 and the positioning pad 44 are all sleeved on the mandrel 1, the mandrel 1 is inserted into the vibration isolation cavity 23, a threaded section is formed on the outer wall of one end of the mandrel 1, the positioning nut 41 is in threaded connection with the mandrel 1, the positioning nut 41 is further inserted into the wear-resistant ring 42 and the positioning pad 44 after being in threaded connection with the mandrel 1, the positioning pad 44 and the positioning nut 41 are respectively arranged on two sides of the wear-resistant ring 42, one end of the pressing spring 45 is abutted against one side of the positioning pad 44 away from the wear-resistant ring 42, the other end of the pressing spring 45 is abutted against the inner wall of the elastic intermediate body 2, so that the pressing positioning pad 44 and the wear-resistant ring 42 clamped with the spring collar 43 are pressed and positioned under the action of the pressing spring 45 and the positioning nut 41, the outer cover of the pressing spring 45 is provided with the, because the outer wall of the wear-resistant ring 42 is abutted against the inner wall of the elastic intermediate body 2, when the impact along the axial direction of the mandrel 1 is received, the wear-resistant ring 42 and the inner wall of the elastic intermediate body 2 generate damping force to achieve the effect of buffering and vibration isolation.

Referring to fig. 2, the inner wall of the elastic intermediate body 2 extends towards one side of the positioning pad 44 to form a clamping portion 25, the clamping portion 25 is an inverted cone with an open end, the mandrel 1 penetrates through the clamping portion 25, the compression spring 45 is sleeved outside the clamping portion 25, because the clamping portion 25 is an inverted cone, the compression spring 45 can be clamped more firmly, and swinging is not easy to occur, so that when the positioning pad 44 is abutted tightly, the compression spring 45 is not easy to generate oblique swinging, the effect of buffering and vibration isolation along the axial direction of the mandrel 1 is improved, and the possibility of friction between the compression spring 45 and the outer wall of the mandrel 1 is reduced, so that noise and abrasion are not easy to occur between the compression spring 45 and the mandrel 1.

Referring to fig. 2, a bottom elastic body 5 made of a rubber material is further disposed on a side of the base 3 away from the elastic intermediate body 2, the bottom elastic body 5 is located in the base 3, a cover 6 for plugging a bottom of the base 3 is further connected to a side of the base 3 away from the elastic intermediate body 2, a side of the bottom elastic body 5 away from the cover 6 abuts against the elastic intermediate body 2, the cover 6 and the base 3 are connected by screws, so that after the cover 6 is connected and fixed with the base 3, the bottom elastic body 5 is positioned, the bottom elastic body 5 includes a vibration isolation portion 51 and an annular connection portion 52, a cross section of the vibration isolation portion 51 is trapezoidal, the annular connection portion 52 is located at an outer periphery of the vibration isolation portion 51 and abuts against the elastic intermediate body 2, a region for buffering and vibration isolation is formed between the vibration isolation portion 51 and the cover 6, so that when an impact is applied along an axial direction of the mandrel 1, at this time, the side of the positioning nut 41 departing from the wear-resistant ring 42 is impacted by the contact of the vibration isolation part 51 of the bottom elastic body 5, and the bottom elastic body 5 is made of rubber material, so that the deformation is realized when the impact is applied, the effect of buffering and vibration isolation is achieved, and the elastic intermediate body 2 presses the annular connecting part 52 when the impact is applied, and the overall impact resistance is further improved. The ratio of the stiffness of the bottom elastic body 5 to the impact load that can be borne is: 2.5: 1;

when different impact loads need to be borne, the bottom elastic bodies 5 with different rigidities are adopted, and the best buffering vibration isolation effect can be achieved when different external force impacts are met.

Referring to fig. 2, the damping assembly 4 further includes a plurality of friction rings 46, in this embodiment, two friction rings 46 are provided, two friction rings 46 are respectively provided on two sides of the wear-resistant ring 42 and respectively interposed between the wear-resistant ring 42 and the positioning washer 44 and between the wear-resistant ring 42 and the positioning nut 41, so that the friction rings 46 provided on two sides of the wear-resistant ring 42 can be pressed, the friction rings 46 are made of a non-metallic material, which can be nylon or polytetrafluoroethylene, so that when a longitudinal impact is generated, a friction force is generated between the friction rings 46 on two sides of the wear-resistant ring 42 and the positioning washer 44 and the positioning nut 41, thereby achieving a buffering and vibration isolation of the longitudinal impact, and the friction rings 46 are made of a nylon or polytetrafluoroethylene material, so that during the friction process, no noise is generated, no scratch is caused to the surfaces of the positioning washer 44 and the positioning nut 41, round corners are formed on the outer edges of, when swing impact is generated, the upper part of the elastic intermediate body 2 can swing, and in the swinging process, the elastic intermediate body 2 and the round corner part of the wear-resisting ring 42 form extrusion while the friction ring 46 rubs to buffer and isolate vibration, so that the swing impact is better buffered and isolated vibration, and the overall buffer and isolation performance is improved.

Referring to fig. 2 and 3, a plurality of weight reducing grooves 24 which do not penetrate through the elastic intermediate body 2 are formed in an array along a circumference on one side of the elastic intermediate body 2, which is far away from the first ring groove 21, the weight reducing grooves 24 are formed in the axial direction of the mandrel 1, the cross section of each weight reducing groove 24 can be polygonal or arc-shaped, a U-shaped arc groove is preferred in the embodiment, and can also be circular, triangular, square, hexagonal and the like, the overall rigidity of the elastic intermediate body 2 is reduced by forming the weight reducing grooves 24 on the elastic intermediate body 2, so that the elastic intermediate body 2 can be well deformed in the process of buffering and vibration isolation, and the effect of buffering and vibration isolation is improved. Referring to fig. 2, a plurality of mounting holes 8 for auxiliary mounting are circumferentially arrayed on a side of the mandrel 1 and the positioning nut 41, which face away from each other, and the mounting holes 8 do not penetrate through the mandrel 1 and the positioning nut 41;

the installation process comprises the following steps: when the whole body is installed and combined, firstly the mandrel 1 and the base 3 are vulcanized and fixed with the elastic intermediate body 2, the vulcanized whole body is inverted, one side of the mandrel 1, provided with the installation hole 8, is inserted into the jaw 9 used in auxiliary installation, then the compression spring 45, the positioning gasket 44, the friction ring 46, the wear-resisting ring 42 provided with the spring clamping ring 43 and the friction ring 46 are sequentially sleeved in the mandrel 1, then the positioning nut 41 is in threaded connection with the mandrel 1, when in threaded connection, the other jaw 9 is inserted into the installation hole 8 on the positioning nut 41, so that the positioning nut 41 is driven to rotate when the jaw 9 is rotated, the positioning nut 41 is installed, under the action of the jaw 9, the positioning nut 41 and the mandrel 1 are screwed tightly, the mandrel 1 is not driven to rotate, and the phenomenon that the mandrel 1 is separated from the elastic intermediate body 2 is not easy to occur, the overall structural integrity is improved; after the internal damping assembly 4 is installed, the bottom elastic body 5 is installed, and finally the sealing cover 6 and the base 3 are fixedly connected, so that the whole installation is realized.

The implementation principle of the embodiment is as follows: the mandrel 1, the base 3 and the elastic intermediate body 2 are vulcanized, the mandrel 1 and the base 3 are fixed, the whole body is not prone to overflow, leakage and separation, the damping assembly 4 and the bottom elastic body 5 connected with the base 3 are connected to one section of the mandrel 1 penetrating into the elastic intermediate body 2, impact generated along the axial direction of the mandrel 1 can be achieved, the impact generated along the radial direction of the mandrel 1 can be buffered and isolated under the action of the damping assembly 4, the rigidity of the elastic intermediate body 2 is reduced under the action of the weight reduction groove 24, and good buffering and isolation can be achieved under the action of the round corners on the two sides of the elastic intermediate body 2 and the damping assembly 4 when swing impact is generated; this embodiment realizes the good buffering vibration isolation effect to diversified striking.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.