CN211550360U

CN211550360U - Vibration damper without angular displacement

Info

Publication number: CN211550360U
Application number: CN201922462689.0U
Authority: CN
Inventors: 赵慧江; 吴新国; 孙国胜
Original assignee: Shijiazhuang Julongpan Technology Co ltd
Current assignee: Shijiazhuang Julongpan Technology Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-22
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a damping device of no angular displacement relates to vibration isolation buffering technical field, be in including base, connecting plate, setting the base with damping subassembly and connecting plate between the connecting plate prevent changeing the subassembly, and the key lies in: the vibration reduction assembly comprises metal rubber limited on the base and a vibration reduction plate fixed on the metal rubber, and the vibration reduction plate is connected with the connecting plate through a connecting bolt. The utility model has the advantages that: the metal rubber shock pad is adopted, so that three-dimensional equal-rigidity shock absorption effect can be realized, meanwhile, the service life is long, the high temperature resistance can reach 1000 ℃, and the low temperature is 100 ℃ below zero; can reduce the angle displacement to within 0.5', the damping is effectual, is applicable to platforms such as unmanned aerial vehicle anti-shake, applied photoelectricity formation of image.

Description

Vibration damper without angular displacement

Technical Field

The utility model relates to a vibration isolation buffering technical field, concretely relates to damping device of no angular displacement.

Background

In order to improve the measurement and control accuracy of the photoelectric instrument and equipment and increase the working reliability of the photoelectric instrument and equipment, a vibration isolation and reduction device is often required to be installed between the instrument and equipment and a carrying platform. However, the damping device inevitably generates angular displacement during use under actual complex working conditions. And the damage of the angular displacement disturbance to the photoelectric equipment is far greater than that of the linear displacement disturbance, so that the precision of the photoelectric instrument is greatly reduced.

At present, most of mainstream vibration isolators pay attention to isolation of vertical vibration, have insufficient transverse rigidity, and even amplify disturbance of angular displacement when used in parallel.

The prior art at least has the following technical problems:

the principle of the applied angular displacement-free vibration isolator is mostly realized through a parallelogram mechanism, the parallelogram structure needs the linkage fit between connecting rods to easily generate the condition of friction looseness, so that the factors of angular displacement (less than 3 degrees) cannot be eliminated, the mechanism is complex, when the mass of the vibration isolation equipment is large, the parallelogram mechanism is easy to generate elastic deformation due to the fact that the component parts are weak, the rigid body torsion mode of the vibration isolation equipment is difficult to inhibit, and the reliability is low.

Disclosure of Invention

The to-be-solved problem of the utility model is to provide a damping device of no angular displacement, prevent changeing the subassembly through the design connecting plate, turn into the linear displacement with the angular displacement in the damping device damping, reduce the angular displacement to within 0.5'.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the utility model provides a damping device of no angular displacement, includes base, connecting plate, sets up the base with damping subassembly and connecting plate between the connecting plate prevent changeing the subassembly, the key lies in: the vibration reduction assembly comprises metal rubber limited on the base and a vibration reduction plate fixed on the metal rubber, and the vibration reduction plate is connected with the connecting plate by means of a connecting bolt; the connecting plate rotation-preventing assembly comprises an upper sliding plate, a lower sliding plate, a vertical guide assembly, a first limiting cavity and a first ball and a second ball, wherein the upper sliding plate and the lower sliding plate are arranged between the connecting plate and the damping plate, the vertical guide assembly is arranged between the lower sliding plate and the base, the first limiting cavity is in a strip shape between the connecting plate and the upper sliding plate, the first ball and the second ball are in a second limiting cavity in a strip shape between the upper sliding plate and the lower sliding plate, the first limiting cavity is perpendicular to the second limiting cavity, a first through hole and a second through hole which are matched with the connecting bolt are formed in the upper sliding plate and the lower sliding plate respectively, and the aperture of the first through hole and the aperture of the second through hole are larger than the diameter of the connecting.

The utility model has the advantages that: 1. the metal rubber is adopted for vibration reduction, so that three-dimensional equal-rigidity vibration reduction effect can be realized, meanwhile, the service life is long, the high temperature resistance can reach 1000 ℃, and the low temperature is-100 ℃; 2. the structure of the limiting cavity is designed, so that the ball is always in close contact with the limiting cavity after the ball is installed, and the gap between the two connecting pieces of the limiting ball is arranged, so that errors caused by looseness of a quadrilateral mechanical structure are avoided; 3. the connecting plate and the vibration reduction plate are fixed by bolts, so that the vibration of the connecting plate is directly transmitted to the metal rubber, and the vibration reduction efficiency is improved; 4. reduce the angle displacement to within 0.5', the damping is effectual, is applicable to platforms such as unmanned aerial vehicle anti-shake, applied photoelectricity formation of image.

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

Drawings

FIG. 1 is a schematic structural view of the damping device without angular displacement according to the present invention;

fig. 2 is a schematic structural diagram of a connecting plate in the damping device without angular displacement according to the present invention.

In the drawings: 1 is a base, 1-1 is a mounting sleeve, 2 is a connecting plate, 3 is metal rubber, 4 is a vibration damping plate, 5 is a connecting bolt, 6 is an upper sliding plate, 6-1 is a first through hole, 7 is a lower sliding plate, 7-1 is a second through hole, 8 is a first ball, 9 is a second ball, 10 is a guide sleeve, 11 is a guide rod, 12 is a connecting screw, 13 is a clamping screw, 14 is a connecting sleeve, 15 is a clamping plate, 16 is a third ball,

a represents a first limit cavity, B represents a second limit cavity, and C represents a third limit cavity.

Detailed Description

Referring to the attached

drawings

1 and 2, the utility model provides a damping device without angular displacement, which comprises a base 1, a connecting plate 2 connected with equipment needing damping, a damping component arranged between the base 1 and the connecting plate 2 and a connecting plate anti-rotation component.

The damping assembly comprises metal rubber 3 limited on a base 1 and a damping plate 4 fixed on the metal rubber 3, wherein the damping plate 4 is connected with a connecting plate 2 by means of a connecting bolt 5. An installation sleeve 1-1 is arranged in the base 1, and the metal rubber 3 is limited in the middle of the installation sleeve 1-1 by means of a check ring, so that the metal rubber 3 is in a suspended structure to ensure the vibration reduction effect. The number of the connecting bolts 5 is at least 3 along the circumferential direction of the damping plate 4 to ensure the stability of connection. A connecting assembly is arranged between the vibration damping plate 4 and the metal rubber 3 to enable the vibration damping plate and the metal rubber 3 to be tightly connected, and the connecting assembly comprises a connecting sleeve 14 limited in a central hole of the metal rubber 3 and connected with the vibration damping plate 4 through a connecting screw 12 and a clamping plate 15 located at the bottom of the metal rubber 3 and connected with the connecting sleeve 14 through a clamping screw 13.

Foretell connecting plate prevents changeing subassembly is including setting up slide 6 between connecting plate 2 and damping plate 4, lower slide 7, set up the vertical direction subassembly between slide 7 and base 1 and set up respectively and be the first spacing chamber A of bar between connecting plate 2 and slide 6, first ball 8 and second ball 9 in the spacing chamber B of second that is the bar between slide 6 and lower slide 7, first spacing chamber A is mutually perpendicular with the spacing chamber B of second. The upper sliding plate 6 and the lower sliding plate 7 are respectively provided with a first through hole 6-1 and a second through hole 7-1 which are matched with the connecting bolt 5, and the diameters of the first through hole 6-1 and the second through hole 7-1 are both larger than the diameter of the connecting bolt 5, so that the relative movement among the connecting plate 2, the upper sliding plate 6 and the lower sliding plate 7 is facilitated. After the connecting bolt 5 is installed, the connecting plate 2 and the damping plate 4 and the upper sliding plate 6, the lower sliding plate 7 and the two balls between the connecting plate 2 and the damping plate 4 are integrated, but the horizontal movement of the upper sliding plate 6, the lower sliding plate 7 and the two balls is not limited, so that the angular displacement of the connecting plate 2 is converted into two linear displacements perpendicular to each other.

Referring to fig. 1 and 2, the first limiting cavity a includes two strip-shaped grooves which are respectively disposed on the connecting plate 2 and the upper sliding plate 6 and are disposed oppositely, the width of each strip-shaped groove is less than or equal to the diameter of the first ball 8, the depth of each strip-shaped groove is greater than the diameter of the first ball 8, and at least 2 groups (4 groups in this embodiment) of the first limiting cavity a and the first ball 8 are disposed between the connecting plate 2 and the upper sliding plate 6. The spacing chamber B of second is including setting up respectively on last slide 6 and lower slide 7 and two bar grooves of relative setting, and the width less than or equal to second ball 9 of bar groove's diameter, the degree of depth are greater than the diameter of second ball 9, and the spacing chamber B of second and supporting second ball 9 are provided with 2 at least groups (are equipped with 4 groups in this embodiment) between last slide 6 and lower slide 7. Such setting makes the ball and the recess gapless, prevents to appear installing the not hard up problem after using a period.

The above-mentioned vertical guide assembly is provided with 3 at least groups along the circumference of the lower slide plate 7 to ensure the stable lifting of the lower slide plate 7 and prevent the lower slide plate 7 from rotating, and each group all comprises a guide sleeve 10 fixed on the base 1 and a guide rod 11 fixed on the lower slide plate 7 and matched with the guide sleeve 10.

A strip-shaped third limiting cavity C and a third ball 16 limited in the third limiting cavity C are arranged between the lower sliding plate 7 and the vibration damping plate 4, and the third limiting cavity C is parallel to the first limiting cavity A. The third limiting cavity C comprises a strip-shaped groove arranged on the vibration damping plate 4, the width of the strip-shaped groove is smaller than or equal to the diameter of the third ball 16, the depth of the strip-shaped groove is larger than the diameter of the third ball 16, and at least 2 groups (4 groups in the embodiment) of the third limiting cavity C and the third ball 16 matched with the third limiting cavity C are arranged between the lower sliding plate 7 and the vibration damping plate 4, so that the lower sliding plate 7 can move with the vibration damping plate 4. The balls and the matched limiting cavities are arranged between the connecting plate 2 and the upper sliding plate 6, between the upper sliding plate 6 and the lower sliding plate 7, between the lower sliding plate 7 and the vibration reduction plate 4, so that the sliding between the plates is ensured, and the angular displacement of the connecting plate 2 is converted into linear displacement in two vertical directions.

The utility model discloses a device is tested under following experimental condition:

1. design input conditions for resistance to chemical environment

2. Acceleration of a vehicle

Acceleration in the X direction: ax =10 g; y, Z directional acceleration: ay = az =2 g;

test time: keeping for 2min after reaching the maximum acceleration;

loading rate: not more than 0.5g/s

3. Impact: the head is detected according to conditions by adopting a half-normal-rotation wave pulse test, and the electric cabinet adopts an impact response spectrum test.

TABLE 1 impact test conditions (half sine wave)

TABLE 2 impact test conditions (impact response spectra)

4. Results

The damping efficiency reaches more than 90% under the conditions of satisfying sinusoidal vibration, acceleration and impact, the amplification factor of a resonance point is less than 3 times, the linear maximum displacement is +/-3 mm, and the corner maximum displacement is less than 0.5'. The obtained test data all meet the requirements of the vibration isolator.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims

1. The utility model provides a damping device of no angular displacement, includes base (1), connecting plate (2), sets up base (1) with damping subassembly and connecting plate between connecting plate (2) prevent changeing the subassembly, its characterized in that:

the vibration reduction assembly comprises metal rubber (3) limited on the base (1) and a vibration reduction plate (4) fixed on the metal rubber (3), and the vibration reduction plate (4) is connected with the connecting plate (2) by means of a connecting bolt (5);

the connecting plate rotation-preventing assembly comprises a connecting plate (2), an upper sliding plate (6) and a lower sliding plate (7) which are arranged between the connecting plate and the vibration-damping plate (4), a vertical guide assembly arranged between the lower sliding plate (7) and the base (1), and first balls (8) and second balls (9) which are respectively arranged between the connecting plate (2) and the upper sliding plate (6) and are in a strip-shaped first limiting cavity (A), between the upper sliding plate (6) and the lower sliding plate (7) and are in a strip-shaped second limiting cavity (B), wherein the first limiting cavity (A) and the second limiting cavity (B) are perpendicular to each other, the upper sliding plate (6) and the lower sliding plate (7) are respectively provided with a first through hole (6-1) and a second through hole (7-1) which are matched with the connecting bolt (5), and the aperture of the first through hole (6-1) and the aperture of the second through hole (7-1) are all larger than that of the connecting bolt (5) Diameter.

2. The vibration damping device without angular displacement according to claim 1, characterized in that: the vertical guide assembly comprises a guide sleeve (10) fixed on the base (1) and a guide rod (11) matched with the guide sleeve (10) and fixed on the lower sliding plate (7).

3. The vibration damping device without angular displacement according to claim 1, characterized in that: an installation sleeve (1-1) is arranged in the base (1), and the metal rubber (3) is limited in the middle of the installation sleeve (1-1) by means of a check ring.

4. The vibration damping device without angular displacement according to claim 3, characterized in that: damping plate (4) with be equipped with coupling assembling between metal rubber (3), coupling assembling includes spacing in the well downthehole and with the help of connecting screw (12) of metal rubber (3) with adapter sleeve (14) that damping plate (4) link to each other and be located metal rubber (3) bottom and with the help of clamping screw (13) with clamp plate (15) that adapter sleeve (14) link to each other.

5. The vibration damping device without angular displacement according to claim 1, characterized in that: the number of the connecting bolts (5) is at least 3 along the circumferential direction of the vibration reduction plate (4).

6. The vibration damping device without angular displacement according to claim 1, characterized in that: the vertical guide assembly is provided with at least 3 groups along the circumferential direction of the lower sliding plate (7).

7. Damping device without angular displacement according to any of claims 1 to 6, characterized in that: a strip-shaped third limiting cavity (C) and a third ball (16) limited in the third limiting cavity (C) are arranged between the lower sliding plate (7) and the vibration reduction plate (4), and the third limiting cavity (C) is parallel to the first limiting cavity (A).

8. The vibration damping device without angular displacement according to claim 7, wherein: the third limiting cavity (C) comprises a strip-shaped groove arranged on the vibration reduction plate (4), the width of the strip-shaped groove is smaller than or equal to the diameter and the depth of the third ball (16) and larger than the diameter of the third ball (16), and at least 2 groups of the third limiting cavity (C) and the matched third ball (16) are arranged between the lower sliding plate (7) and the vibration reduction plate (4).