CN214304989U

CN214304989U - Ball-hinged end-face constraint variable-damping rigidity vibration isolator

Info

Publication number: CN214304989U
Application number: CN202120091277.5U
Authority: CN
Inventors: 季凡渝
Original assignee: Jiangsu Xinjienuo Environmental Engineering Technology Co ltd
Current assignee: Jiangsu Xinjienuo Environmental Engineering Technology Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-09-28
Anticipated expiration: 2031-01-14

Abstract

The utility model relates to a ball pivot formula terminal surface restraint becomes damping rigidity isolator belongs to vibration damper technical field. Two ends of an arched bracket of the vibration isolator support a vertical central shaft through vibration isolation components respectively; the two ends of the central shaft are respectively provided with a necking section and a thread section which are sequentially reduced in diameter, and a connector assembly is sleeved on the middle section between the necking sections at the two ends through a sliding block; the vibration isolation assembly comprises a step elastic barrel ring, the inner end of which is embedded in the support hole of the bending end of the arched support; the outer end of the step elastic barrel ring is embedded in the embedded groove of the inner end face of the limiting seat; the step elastic barrel ring is provided with step inner holes corresponding to the inner end and the outer end respectively, and the small diameter of the step inner hole is larger than the diameter of the necking section of the central shaft and smaller than the diameter of the middle section of the central shaft.

Description

Ball-hinged end-face constraint variable-damping rigidity vibration isolator

Technical Field

The utility model relates to a isolator, especially a ball-and-socket end face restraint becomes damping rigidity isolator belong to vibration damper technical field.

Background

As can be seen from the search, the Chinese patent document with the application number of 201721464238.5 discloses a small-sized spherical hinge tooth-shaped shock absorber. The shock absorber comprises outer gear ring components arranged at two ends of an arched bracket, inner gear ring components arranged at two ends of a vertical central shaft and a connecting cylinder component arranged in the middle of the central shaft; the outer gear ring component comprises an outer ring fixedly connected with the arched bracket and an inner gear fixed in the outer ring, the inner gear ring component comprises an inner ring fixedly connected with the central shaft and an outer gear fixed outside the inner ring, the inner gear and the outer gear are mutually meshed, and at least one of the inner gear and the outer gear is made of elastic materials; the connecting cylinder component comprises a sliding block which forms a moving pair with the central shaft, the sliding block is provided with a shaft end containing cavity for containing the inner end of the connecting shaft and is hinged with the horizontally extending connecting shaft through a spherical hinge head, the connecting shaft and the central hole of the spherical hinge head form the horizontal moving pair, the inner end of the connecting shaft is wrapped with an elastic buffer cushion, various combination relations can be formed, zero rigidity, buffer vibration reduction and elastic vibration absorption are achieved, and unique vibration isolation, vibration reduction and buffer effects are achieved.

However, with the continuous development and change of the vibration damping and isolating technology, the technical solution of the above patent presents the following main points to be improved in practice: 1) the required rotational decoupling requirements (decoupling, i.e. separating the two motions) are not met; 2) the limit angle is not easy to control. In addition, the defects that the bearing capacity of the elastic teeth is small, the risk of tooth jumping exists, damping cannot be obtained when gaps exist among the teeth, and the front and back displacement is limited exist.

Disclosure of Invention

The utility model aims to provide a: aiming at the part to be improved in the prior art, the ball-hinge type end surface constraint variable damping stiffness vibration isolator can realize rotary decoupling and easily meet the regulation and control of a limit angle on the premise of meeting the basic requirement of vibration isolation through structural improvement.

In order to achieve the above object, the utility model discloses a ball-and-socket end face restraint becomes damping rigidity isolator essential structure does: the vibration isolation support comprises an arched support with two bent ends, wherein the two ends of the arched support a vertical central shaft through vibration isolation components respectively; the two ends of the central shaft are respectively provided with a necking section and a thread section which are sequentially necked, and a connector assembly is sleeved on the middle section between the necking sections at the two ends through a sliding block;

the vibration isolation assembly comprises a step elastic barrel ring, the inner end of which is embedded in a support hole at the bending end of the arched support; the outer end of the step elastic barrel ring is embedded in an embedded groove of the inner end face of the limiting seat; the step elastic barrel ring is provided with step inner holes corresponding to the inner end and the outer end respectively, and the small diameter of the step inner hole is larger than the diameter of the necking section of the central shaft and smaller than the diameter of the middle section of the central shaft;

the outer end face of the limiting seat is provided with an outer embedding groove which penetrates in a direction perpendicular to the embedded groove, a rectangular elastic limiting block with a preset gap is embedded in the outer embedding groove, a cushion ring with the inner end limited at the outer end of the necking section of the central shaft is arranged in an inner hole of the elastic limiting block, and the outer end of the cushion ring extends out of an extension edge which presses the elastic limiting block; the central shaft is provided with a fastener which presses the elastic limiting block through the expansion edge.

Adopt the utility model discloses afterwards, not only axial, circumference have the elastic buffer structure, can satisfy the vibration isolation requirement, and the predetermined clearance structure of vibration isolation subassembly has not only realized rotatory decoupling zero moreover, sets for the size in this clearance as required moreover and can regulate and control the angle of rotation to simple reasonable solution prior art exists's problem.

The utility model discloses a further perfection is that the connector assembly includes the embedded plate that is fixedly connected with the slider, one end of the embedded plate that is far away from the slider is provided with a dent that the inner ends of the insertion cavity tube are fixedly connected with each other, and the outer end of the insertion cavity tube is fixedly connected with the end face dent of the outer embedded plate; the inner hole of the cavity tube is provided with a middle spacer ring, a hinged tube tightly matched with the inner hole of the cavity tube is arranged between the middle spacer ring and the outer embedded plate, a connecting shaft is installed in the inner hole of the hinged tube in a sliding fit mode, an expanding head located between the inner embedded plate and the middle spacer ring is formed at one end, close to the central shaft, of the connecting shaft, and the expanding head wraps a cushion pad. This connector structure makes the utility model discloses can obtain required front and back damping displacement.

A further refinement of the present invention is that the two sides of the cushion pad are lined with resilient washers, respectively. Therefore, the materials of the cushion pad and the elastic washer can be selected according to requirements, and the variable damping restraint of the front displacement and the rear displacement is realized.

The utility model discloses further perfect again, the inner of step elasticity bucket circle is the circular ring section, the outer end is the rectangle section. Therefore, the rotary decoupling is more favorably ensured, and the variable damping of the rotary vibration isolation is realized.

The utility model discloses it is still further perfect, the extension is along inlaying in the sunken of elastic limiting block outer end. Therefore, the variable requirements of various vibration isolation dampers in the central axial direction can be further met through the selection of the elastic material.

Drawings

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

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a top-view working state of the embodiment of fig. 1.

Fig. 3 is a schematic perspective view of the embodiment of fig. 1.

Fig. 4 is a schematic perspective exploded view of the embodiment of fig. 1.

Detailed Description

Example one

As shown in fig. 1 to 4, the ball-hinge type end-surface-constrained variable-damping-stiffness vibration isolator of the embodiment comprises an arched bracket 1 with two bent ends, wherein two ends of the arched bracket 1 support a vertical central shaft 3 through vibration isolation components 2 mounted by screws 2-6 respectively; the two ends of the central shaft 3 are respectively provided with a necking section 3-1 and a thread section 3-2 which are sequentially reduced in diameter, and a connector assembly 5 is sleeved on the middle section 3-3 between the necking sections at the two ends through a sliding block 4.

The vibration isolation component 2 comprises a step elastic barrel ring 2-4 with an inner end circular ring section embedded in a support hole of the bending end of the bow-shaped support; the rectangular section at the outer end of the elastic barrel ring 2-4 is embedded in the embedded groove 2n of the inner end surface of the limiting seat 2-3; the step elastic barrel ring 2-4 is provided with step inner holes respectively corresponding to the inner end circular ring section and the outer end rectangular section, and the small diameter of the step inner hole is larger than the diameter of the neck section 3-1 of the central shaft 3 but smaller than the diameter of the middle section 3-3 of the central shaft 3.

The outer end face of the limiting seat 2-3 is provided with an outer embedding groove 2w with the penetrating direction perpendicular to the embedded groove 2n, a rectangular elastic limiting block 2-2 with a round angle and a preset gap is embedded in the outer embedding groove 2w, a cushion ring 2-5 with the inner end limited at the outer end of the central shaft necking section 3-1 is arranged in an inner hole of the elastic limiting block 2-2, and the outer end of the cushion ring 2-5 extends out of an expansion edge for pressing the elastic limiting block 2-2; the extension edge is embedded in a recess at the outer end of the elastic limiting block 2-2; the central shaft 3 is provided with a nut 2-1 which presses the elastic limiting block 2-2 through the extension edge.

The connecting head component 5 comprises an inner panel 5-1 fixedly connected with the sliding block 4 through a countersunk head screw, one end of the inner panel 5-1 far away from the sliding block 4 is provided with a recess which is inserted into the inner ends of the cavity pipes 5-2 and is fixedly connected with each other in a threaded manner, the inner hole of the cavity pipe 5-2 is provided with a middle spacer ring, and the outer end of the middle spacer ring is fixedly connected with the end surface recess of the outer panel 5-7. An articulated pipe 5-6 tightly matched with an inner hole of the cavity pipe 5-2 is arranged between the middle spacer ring and the outer panel 5-7, a connecting shaft 5-4 is arranged in the inner hole of the articulated pipe 5-6 in a sliding fit mode, one end, adjacent to the central shaft 3, of the connecting shaft 5-4 forms an expanding head located between the inner panel 5-1 and the middle spacer ring, the expanding head wraps a cushion pad 5-8, and two sides of the cushion pad 5-8 are respectively lined with elastic gaskets 5-3 and 5-5.

In the prior art, decoupling control of a limit angle and front and rear displacements is limited by a tooth-shaped meshing structure, and mutual dependence and restriction are realized, so that proper tooth side clearance can hardly be set and the requirements of front and rear displacements and corner displacements can be met; in the structure of the embodiment, the axial displacement of the elastic limiting block depends on the hole shape and size of the end face of the arched support, the circumferential rotation is not influenced, the rotation limit depends on the preset gap between the elastic limiting block and the limiting seat, the decoupling is convenient, and the regulation and the control are easy. Secondly, when overload occurs, the elastic tooth meshing limit in the prior art cannot avoid tooth jumping and even tooth breakage caused by low rigidity and strength; the limiting structure of the embedded groove in the limiting seat (see fig. 2) of the embodiment thoroughly solves the problem and improves the safety and reliability. In addition, according to the requirement, the hole type, the hole diameter and the hardness of the step elastic barrel ring 2-4 are changed by selectively changing the shape and the hardness of the vulcanized rubber part of the rectangular elastic limiting block 2-2; the thickness and the hardness of the elastic washers 55-3 and 5-5 are changed, and springs and rubber pads with different rigidities are additionally arranged between the central shaft 3 and the sliding block 4, and the like; various variable damping can be realized very flexibly.

In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.

Claims

1. A ball-hinged end-face constraint variable-damping stiffness vibration isolator comprises an arched bracket with two bent ends, wherein two ends of the arched bracket support a vertical central shaft through vibration isolation components respectively; the method is characterized in that: the two ends of the central shaft are respectively provided with a necking section and a thread section which are sequentially necked, and a connector assembly is sleeved on the middle section between the necking sections at the two ends through a sliding block;

the outer end face of the limiting seat is provided with an outer embedding groove which penetrates in a direction perpendicular to the embedding groove, an elastic limiting block is embedded in the outer embedding groove, a cushion ring of which the inner end is limited at the outer end of the necking section of the central shaft is arranged in an inner hole of the elastic limiting block, and an expansion edge for pressing and holding the elastic limiting block extends out of the outer end of the cushion ring; the central shaft is provided with a fastener which presses the elastic limiting block through the expansion edge.

2. The ball-joint end-face-restrained variable-damping stiffness vibration isolator according to claim 1, wherein: the connector assembly comprises an inner embedded plate fixedly connected with the sliding block, one end of the inner embedded plate, far away from the sliding block, is provided with a recess fixedly connected with the inner ends of the insertion cavity pipes, and the outer ends of the cavity pipes are fixedly connected with the end surface recess of the outer embedded plate; the inner hole of the cavity tube is provided with a middle spacer ring, a hinged tube tightly matched with the inner hole of the cavity tube is arranged between the middle spacer ring and the outer embedded plate, a connecting shaft is installed in the inner hole of the hinged tube in a sliding fit mode, an expanding head located between the inner embedded plate and the middle spacer ring is formed at one end, close to the central shaft, of the connecting shaft, and the expanding head wraps a cushion pad.

3. The ball-joint end-face-restrained variable-damping stiffness vibration isolator according to claim 2, wherein: the two sides of the buffer pad are respectively lined with an elastic gasket.

4. The ball-joint end-face-restrained variable-damping stiffness vibration isolator according to claim 3, wherein: the inner end of the step elastic barrel ring is a circular ring section, and the outer end of the step elastic barrel ring is a rectangular section.

5. The ball-joint end-face-restrained variable-damping stiffness vibration isolator according to claim 4, wherein: the extension edge is embedded in a recess at the outer end of the elastic limiting block.