Rotary non-contact damping device

Abstract

The utility model belongs to the technical field of damping devices, and particularly relates to a rotary non-contact damping device. Comprising a damping fin and a lower magnetic ring, the lower magnetic ring is located at the lower end of the damping fin, the lower magnetic ring and the damping fin are coaxially distributed, a plurality of N poles and a plurality of S poles are circumferentially arranged on the lower magnetic ring and the damping fin, and the N poles and the S poles on the lower magnetic ring and the damping fin are alternately distributed; the damping fins are made of soft magnetic materials with hysteresis characteristics, and the damping fins are magnetized in the radial direction. The damping fin is made of the soft magnetic material with the hysteresis characteristic, the multiple N poles and the multiple S poles which are alternately distributed are arranged on the damping fin, the damping fin rotates relative to the lower magnetic ring with the multiple N poles and the multiple S poles which are alternately distributed, and the resistance in the rotating process of the damping fin does not fluctuate; and the operation stability of the rotary non-contact damping device can be ensured. The damping fins are arranged to be magnetized in the radial direction, resistance can be increased, and the damping effect is obvious.

Description

Technical Field

[0001] The utility model belongs to the technical field of damping devices, and particularly relates to a rotary non-contact damping device. Background Art

[0002] In the structure of a hysteresis damper, when the damping plate rotates relative to the magnetic ring, due to the hysteresis characteristic of the damping plate, the change in its magnetic induction intensity always lags behind the change in the magnetic field intensity, and a uniformly sized rotary damping force will be received during the rotation process. Among them, the magnitude of the damping force is directly proportional to the magnetic intensity of the magnetic ring and the relative area size. The stronger the magnetic intensity, the greater the damping force and the more obvious the damping effect; the larger the relative surface of the magnetic ring and the damping plate, the more obvious the damping effect.

[0003] However, it is difficult to regulate the magnitude of the damping force of the existing structure of the hysteresis damper, and during the rotation of the damping plate, the damping force has the problem of being sometimes large and sometimes small, resulting in unstable operation. Therefore, it is necessary to design a rotary non-contact damping device to solve the above problems. Summary of the Utility Model

[0004] In view of the above problems, the utility model provides a rotary non-contact damping device to solve the problems raised in the above background art.

[0005] To achieve the above object, the utility model provides the following technical solution: A rotary non-contact damping device, comprising a damping plate and a lower magnetic ring, the lower magnetic ring is located at the lower end of the damping plate and is coaxially distributed with the damping plate, a plurality of N poles and a plurality of S poles are circumferentially arranged on both the lower magnetic ring and the damping plate, and the plurality of N poles and the plurality of S poles on the lower magnetic ring and the damping plate are alternately distributed;

[0006] The damping plate is made of a soft magnetic material with hysteresis characteristics, and the damping plate is magnetized radially.

[0007] Further, the rotary non-contact damping device further comprises a lower end seat and a lower end cover, a lower mounting groove is opened at the lower end of the lower end seat, the lower magnetic ring is arranged in the lower mounting groove, a bearing is arranged on the inner ring of the lower magnetic ring, the lower end of the damping plate is arranged in the inner ring of the bearing, the lower end cover is located at the lower end of the lower magnetic ring and is connected with the lower end seat.

[0008] Further, the rotary non-contact damping device further comprises an upper magnetic ring, the upper magnetic ring is located at the upper end of the damping plate and is coaxially distributed with the damping plate, a plurality of N poles and a plurality of S poles are circumferentially arranged on the upper magnetic ring, and the plurality of N poles and the plurality of S poles on the upper magnetic ring are alternately distributed.

[0009] Furthermore, the rotating non-contact damping device also includes an upper end seat and an upper end cover, the upper end seat is arranged at the upper end of the lower end seat, the upper end of the upper end seat is provided with an upper mounting groove, the upper magnetic ring is arranged in the upper mounting groove, the inner ring of the upper magnetic ring is provided with a bearing, the upper end of the damping plate is arranged in the inner ring of the bearing, and the lower end cover is located at the upper end of the upper magnetic ring and is connected to the upper end seat.

[0010] Furthermore, two N poles and two S poles are circumferentially arranged on the upper magnetic ring, the lower magnetic ring and the damping plate, and each N pole or S pole occupies 1 / 4 of the circular area.

[0011] Furthermore, the rotating non-contact damping device also includes a locking screw, the lower end surface of the upper end seat is provided with a plug-in slot, the upper end of the lower end seat is inserted into the plug-in slot, and the locking screw passes through the side wall of the upper end seat into the plug-in slot and is connected to the upper end seat.

[0012] Furthermore, the rotary non-contact damping device also includes a one-way bearing, which is arranged in the middle inner hole of the damping plate, and the one-way bearing is coaxially distributed with the damping plate.

[0013] Technical effects and advantages of the utility model:

[0014] 1. By making the damping plate from a soft magnetic material with hysteresis characteristics, and providing a plurality of N poles and a plurality of S poles alternately distributed on the damping plate, and utilizing the damping plate to rotate relative to the lower magnetic ring on which the plurality of N poles and the plurality of S poles are alternately distributed, the resistance of the damping plate during the rotation process will not fluctuate, thereby ensuring the operating stability of the rotating non-contact damping device.

[0015] 2. By setting the damping plate to radial magnetization, it is helpful to increase the resistance and the damping effect is more obvious.

[0016] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1The structural schematic diagram of the rotary non-contact damping device according to the embodiment of the present utility model is shown;

[0019] Figure 2 is shown Figure 1 The cross-sectional view of the rotary non-contact damping device in

[0020] Figure 3 is shown Figure 1 The exploded structural schematic diagram of the rotary non-contact damping device in

[0021] Figure 4 The structural schematic diagram of the rotary non-contact damping device according to another embodiment of the present utility model is shown;

[0022] Figure 5 is shown Figure 4 The cross-sectional view of the rotary non-contact damping device in

[0023] Reference numerals: 1, damping piece; 21, lower magnetic ring; 22, lower end seat; 23, lower end cover; 31, upper magnetic ring; 32, upper end seat; 33, upper end cover; 4, bearing; 5, set screw; 6, screw; 7, one-way bearing. Detailed implementation manners

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] As Figures 1 to 3 shown, a rotary non-contact damping device according to an embodiment of the present utility model includes a damping piece 1 and a lower magnetic ring 21. The lower magnetic ring 21 is located at the lower end of the damping piece 1 and is coaxially distributed with the damping piece 1. A plurality of N poles and a plurality of S poles are circumferentially arranged on both the lower magnetic ring 21 and the damping piece 1, and the plurality of N poles and the plurality of S poles on the lower magnetic ring 21 and the damping piece 1 are alternately distributed;

[0026] The damping piece 1 is made of a soft magnetic material with magnetic hysteresis characteristics, and the damping piece 1 is magnetized radially.

[0027] Specifically, a fixing shaft can be inserted into the inner hole in the middle of the damping piece 1, and the fixing shaft is used to connect a driving mechanism such as a motor to drive the damping piece 1 to rotate.

[0028] In this embodiment, when the damping piece 1 rotates in one direction, due to the hysteresis characteristic, the change in its magnetic induction intensity always lags behind the change in the magnetic field intensity. Whether the damping piece 1 rotates forward or backward, it will be subjected to a uniformly sized rotational resistance during the rotation process. The magnitude of the resistance is proportional to the magnetic intensity of the magnetic ring and the relative area. The stronger the magnetic intensity, the greater the resistance and the more obvious the damping effect; the larger the relative surface of the magnetic ring and the damping piece 1, the more obvious the damping effect.

[0029] By making the damping piece 1 of a soft magnetic material with hysteresis characteristics, and arranging a plurality of N poles and a plurality of S poles alternately distributed on the damping piece 1, and using the damping piece 1 to rotate relative to the lower magnetic ring 21 with the plurality of N poles and the plurality of S poles alternately distributed, the resistance during the rotation process of the damping piece 1 will not be large or small suddenly, which can ensure the running stability of the rotation non-contact damping device.

[0030] Secondly, if the damping piece 1 is made of a soft magnetic material with hysteresis characteristics but is not radially magnetized and is only magnetized by the lower magnetic ring 21, the resistance of the damping piece 1 during the rotation process is small, the damping effect is not obvious and can be ignored. By radially magnetizing the damping piece 1, it is beneficial to increase the resistance and the damping effect is more obvious.

[0031] Optionally, as Figures 1 to 3 shown, the rotation non-contact damping device further includes a lower end seat 22 and a lower end cover 23. A lower installation groove is opened at the lower end of the lower end seat 22. The lower magnetic ring 21 is arranged in the lower installation groove. A bearing 4 is arranged on the inner ring of the lower magnetic ring 21. The lower end of the damping piece 1 is arranged in the inner ring of the bearing 4. The lower end cover 23 is located at the lower end of the lower magnetic ring 21 and is connected to the lower end seat 22.

[0032] Specifically, the lower end seat 22 and the lower end cover 23 are connected by screws 6. The lower end seat 22, the lower magnetic ring 21, the bearing 4 and the damping piece 1 are coaxially distributed.

[0033] In this embodiment, by combining the lower end seat 22, the lower end cover 23 and the lower magnetic ring 21 into a rigid body, when the rigid body is stationary, the damping piece 1 is supported by the bearing 4, so that the damping piece 1 can rotate relative to the lower magnetic ring 21 along the central axis of the damping piece 1. Secondly, the lower end seat 22 and the lower end cover 23 can wrap the lower magnetic ring 21 to prevent the lower magnetic ring 21 from being exposed, realizing the protection of the lower magnetic ring 21.

[0034] Optionally, as Figures 1 to 3As shown, the rotary non-contact damping device further includes an upper magnetic ring 31. The upper magnetic ring 31 is located at the upper end of the damping piece 1 and is coaxially distributed with the damping piece 1. A plurality of N poles and a plurality of S poles are circumferentially arranged on the upper magnetic ring 31, and the plurality of N poles and the plurality of S poles on the upper magnetic ring 31 are alternately distributed.

[0035] In this embodiment, when adjusting the magnetic strength, when the N pole of the upper magnetic ring 31 is facing the S pole of the lower magnetic ring 21, the damping piece 1 rotates between the upper magnetic ring 31 and the lower magnetic ring 21, and the damping force is the smallest, and the damping effect is not good. When the upper magnetic ring 31 and the lower magnetic ring 21 rotate a certain angle and are in the state where the N pole of the upper magnetic ring 31 corresponds to the S pole of the corresponding part of the lower magnetic ring 21, the magnetic strength around the damping piece 1 will increase. The damping piece 1 rotates between the upper magnetic ring 31 and the lower magnetic ring 21, and the damping force increases, and the damping effect is enhanced. When the upper magnetic ring 31 and the lower magnetic ring 21 rotate a certain angle and are in the state where the N pole of the upper magnetic ring 31 is facing the N pole of the lower magnetic ring 21, the magnetic strength around the damping piece 1 is enhanced to the maximum. The damping piece 1 rotates between the upper magnetic ring 31 and the lower magnetic ring 21, and the damping force is enhanced to the maximum, and the damping effect reaches the maximum.

[0036] Optionally, as Figures 1 to 3 As shown, the rotary non-contact damping device further includes an upper end seat 32 and an upper end cover 33. The upper end seat 32 is arranged at the upper end of the lower end seat 22. An upper installation groove is opened at the upper end of the upper end seat 32. The upper magnetic ring 31 is arranged in the upper installation groove. A bearing 4 is arranged on the inner ring of the upper magnetic ring 31. The upper end of the damping piece 1 is arranged in the inner ring of the bearing 4. The lower end cover 23 is located at the upper end of the upper magnetic ring 31 and is connected to the upper end seat 32.

[0037] Specifically, the upper end seat 32 and the upper end cover 33 are connected by screws 6. The upper end seat 32, the upper magnetic ring 31, the bearing 4 and the damping piece 1 are coaxially distributed.

[0038] In this embodiment, by combining the upper end seat 32, the upper end cover 33 and the upper magnetic ring 31 into a rigid body, when the rigid body is stationary, the damping piece 1 is supported by the bearing 4, so that the damping piece 1 can rotate relative to the upper magnetic ring 31 along the central axis of the damping piece 1. Secondly, the upper end seat 32 and the upper end cover 33 can wrap the upper magnetic ring 31 to prevent the upper magnetic ring 31 from being exposed, and realize the protection of the structure of the upper magnetic ring 31.

[0039] Optionally, as Figure 3 As shown, two N poles and two S poles are circumferentially arranged on each of the upper magnetic ring 31, the lower magnetic ring 21 and the damping piece 1, and each N pole or S pole occupies 1 / 4 of the circular area.

[0040] In this embodiment, according to actual production and experiments, two N poles and two S poles are circumferentially arranged on the upper magnetic ring 31, the lower magnetic ring 21 and the damping sheet 1. Each N pole or S pole occupies 1 / 4 of the circular area, with the best damping effect and being easy to produce and use.

[0041] Optionally, as Figure 2 and Figure 3 shown, the rotary non-contact damping device further includes a set screw 5. A plugging groove is formed on the lower end surface of the upper end seat 32. The upper end of the lower end seat 22 is inserted into the plugging groove. The set screw 5 passes through the side wall of the upper end seat 32 and enters the plugging groove to be connected with the upper end seat 32.

[0042] Specifically, the axial direction of the set screw 5 faces the radial direction of the upper end seat 32.

[0043] In this embodiment, by forming a plugging groove on the lower end of the upper end seat 32 and inserting the upper end of the lower end seat 22 into the plugging groove, and using the set screw 5 to pass through the side wall of the upper end seat 32 and enter the plugging groove, after tightening the set screw 5, the end of the set screw 5 abuts against the upper end side wall of the lower end seat 22, thereby fixing the upper end seat 32 and the lower end seat 22 and preventing relative rotation between the upper magnetic ring 31 and the lower magnetic ring 21. Thus, after adjusting the resistance magnitude, when the set screw 5 is tightened, the upper end cover 33, the upper end seat 32, the lower end cover 23, the lower end seat 22, the upper magnetic ring 31 and the lower magnetic ring 21 will be combined into a rigid body, and the adjusted magnetic strength magnitude can be maintained.

[0044] Optionally, as Figure 4 and Figure 5 shown, the rotary non-contact damping device further includes a one-way bearing 7. The one-way bearing 7 is arranged in the middle inner hole of the damping sheet 1, and the one-way bearing 7 is coaxially distributed with the damping sheet 1.

[0045] In this embodiment, by inserting a shaft part with a suitable size into the one-way bearing 7, the shaft part can freely rotate in one direction in the one-way bearing 7 (the outer ring of the one-way bearing 7 does not move). When the shaft part rotates in the reverse direction, the outer ring of the one-way bearing 7 rotates along with the direction of the shaft. When the outer ring of the one-way bearing 7 is connected to the middle inner hole of the damping sheet 1 through interference fit, keyway, thread, etc., the function of one-way rotation damping can be realized.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rotary non-contact damping device, characterized in that: The invention comprises a damping plate (1) and a lower magnetic ring (21), wherein the lower magnetic ring (21) is located at the lower end of the damping plate (1) and is coaxially distributed with the damping plate (1), and the lower magnetic ring (21) and the damping plate (1) are both circumferentially provided with a plurality of N poles and a plurality of S poles, and the plurality of N poles and the plurality of S poles on the lower magnetic ring (21) and the damping plate (1) are alternately distributed; The damping plate (1) is made of a soft magnetic material with hysteresis characteristics, and the damping plate (1) is radially magnetized.

2. The rotary non-contact damping device according to claim 1, characterized in that: It also includes a lower end seat (22) and a lower end cover (23), wherein the lower end of the lower end seat (22) is provided with a lower mounting groove, the lower magnetic ring (21) is arranged in the lower mounting groove, the inner ring of the lower magnetic ring (21) is provided with a bearing (4), the lower end of the damping plate (1) is arranged in the inner ring of the bearing (4), and the lower end cover (23) is located at the lower end of the lower magnetic ring (21) and is connected to the lower end seat (22).

3. The rotary non-contact damping device according to claim 2, characterized in that: It also comprises an upper magnetic ring (31), the upper magnetic ring (31) being located at the upper end of the damping plate (1) and being coaxially distributed with the damping plate (1), the upper magnetic ring (31) being circumferentially provided with a plurality of N poles and a plurality of S poles, the plurality of N poles and the plurality of S poles on the upper magnetic ring (31) being alternately distributed.

4. The rotary non-contact damping device according to claim 3, characterized in that: It also includes an upper end seat (32) and an upper end cover (33), wherein the upper end seat (32) is arranged at the upper end of the lower end seat (22), an upper mounting groove is provided at the upper end of the upper end seat (32), the upper magnetic ring (31) is arranged in the upper mounting groove, the inner ring of the upper magnetic ring (31) is provided with a bearing (4), the upper end of the damping plate (1) is arranged in the inner ring of the bearing (4), and the lower end cover (23) is located at the upper end of the upper magnetic ring (31) and is connected to the upper end seat (32).

5. The rotary non-contact damping device according to claim 4, characterized in that: The upper magnetic ring (31), the lower magnetic ring (21) and the damping plate (1) are all circumferentially provided with two N poles and two S poles, and each N pole or S pole occupies 1 / 4 of the circular area.

6. The rotary non-contact damping device according to claim 5, characterized in that: It also includes a fixing screw (5), the lower end surface of the upper end seat (32) is provided with a plug-in slot, the upper end of the lower end seat (22) is inserted into the plug-in slot, and the fixing screw (5) passes through the side wall of the upper end seat (32) into the plug-in slot and is connected to the upper end seat (32).

7. The rotary non-contact damping device according to claim 6, characterized in that: It also comprises a one-way bearing (7), which is arranged in the middle inner hole of the damping plate (1), and the one-way bearing (7) is coaxially distributed with the damping plate (1).

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