Pressure-resistant hysteresis damper
By potting and using high-strength insulating materials in hysteresis dampers, the problem that existing hysteresis dampers cannot be used in high-pressure hydraulic oil environments is solved, and the effect of safe and stable operation in high-pressure environments is achieved and the product life is extended.
Patent Information
- Application Number
- CN202510163811.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2025-05-27
AI Technical Summary
Existing hysteresis dampers cannot be used in high-pressure hydraulic oil environments, limiting their application range.
A pressure-resistant hysteresis damper is designed to prevent current leakage and breakdown by installing sockets in the stator and rotor components and potting, combining high-strength insulation materials and insulating tape, and prevent oil erosion through the upper cover seal.
It achieves safe and stable operation in high-voltage environments, prevents current leakage and breakdown, extends product life, and ensures the ability to work under hydraulic oil for a long time.
Smart Images
Figure CN120049710A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of magnetic springs, and in particular relates to a pressure-resistant hysteresis damper. Background Art
[0002] The hysteresis damper is an excellent torque control component, which consists of two parts: the rotor and the stator poles. The rotor is made of special hysteresis material, and the stator poles have gaps in which the rotor rotates. Its working principle is that when the coil is energized, a magnetic field is generated in the gap to cause the rotor to produce a hysteresis effect. When the hysteresis rotor rotates under the action of an external force to overcome the hysteresis force, it generates a rated torque. The torque is only related to the magnitude of the excitation current and has nothing to do with the speed, thereby realizing non-contact torque transmission. The existing hysteresis dampers are mostly used in water-free and oil-free environments, and cannot be used in high-pressure hydraulic oil environments, which affects the application of hysteresis dampers in this field. Summary of the invention
[0003] The present invention aims to solve the above problems and provides a pressure-resistant hysteresis damper that can be used in a pressure environment.
[0004] The pressure-resistant hysteresis damper of the present invention comprises a stator component, a rotor component and a coil; The stator component comprises an outer stator and an inner stator; the outer stator is arranged to be hollow; the inner stator is arranged in the hollow cavity of the outer stator; A groove is provided on the outer wall of the inner stator; the coil is sleeved in the groove and potted; A rotor through hole is arranged in the middle of the inner stator; bearings are arranged at both ends of the rotor through hole; The rotor component is inserted into the rotor through hole and movably connected with the inner stator via the aforementioned bearing; A socket installation groove is arranged on the side wall of the outer stator; a potted socket is arranged in the operation installation groove; A lead through hole is provided on the side wall of the socket mounting groove of the outer stator; The lead wire of the coil is connected to the socket through the lead wire through hole.
[0005] Furthermore, the method for potting the socket of the pressure-resistant hysteresis damper of the present invention includes: mixing a solvent-free epoxy resin at room temperature of 14°C-34°C in proportion, injecting it into the socket so as to cover the wire, placing it in a vacuum cylinder, evacuating for 15 minutes, taking it out and curing it at room temperature for 4 hours for initial curing; then placing it in a high temperature box at 80°C for curing for 3 hours, and curing it at room temperature for 2 hours; Then inject oil-resistant silicone rubber into the socket until the end surface is flush, and place it in a humidity environment of 60%-80% to cure for 8 hours. After the socket is potted, the potting glue has a certain stress concentration effect on the lead-out end of the wire, so oil-resistant silicone rubber is injected into the lead-out end of the wire to protect the lead-out end wire and prevent the potting stress from dragging the wire and damaging the wire.
[0006] Furthermore, in the pressure-resistant hysteresis damper described in the present invention, the rotor component is T-shaped; the front end of the rotor component is an extended end; the extended end extends from the rotor through hole on the inner stator; the tail end is an internal end; an upper cover is provided at one end of the outer stator; and the tail end of the aforementioned rotor component is located between the upper cover and the inner stator.
[0007] The upper cover plays a role of sealing and protection. The upper cover can prevent a large amount of oil from entering the interior of the product, reducing the erosion of the internal structure of the product by the oil, which is beneficial to prolonging the product life; at the same time, the upper cover also blocks foreign matter from entering the stator air gap, avoiding the failure of the main shaft rotation being stuck due to foreign matter.
[0008] Furthermore, in the pressure-resistant hysteresis damper of the present invention, an open retaining ring is sleeved on the protruding end of the rotor component; the bearing is limited by the open retaining ring to prevent the main shaft from axial movement.
[0009] Furthermore, in the pressure-resistant hysteresis damper of the present invention, insulating sheets are provided on both sides of the coil; insulating tape is provided on the inner wall of the coil; and the insulating sheets and insulating tape are provided to prevent the coil from directly contacting the inner stator and causing a short circuit.
[0010] The insulating sheet is located between the coil and the side wall of the groove on the inner stator; The insulating tape is located between the coil and the bottom wall of the groove on the inner stator.
[0011] The pressure-resistant hysteresis damper of the present invention improves the existing hysteresis damper by using high-strength insulating materials and potting treatment for the coil, which can effectively prevent current leakage and breakdown under high voltage electricity, allowing the inner cavity to be filled with hydraulic oil when the product is working. The product can work for a long time under hydraulic oil, ensuring the safe and stable operation of the damper in a high-pressure environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic structural diagram of a pressure-resistant hysteresis damper according to an embodiment of the present invention; Figure 2 It is a cross-sectional structural diagram of the pressure-resistant hysteresis damper according to an embodiment of the present invention; Figure 3 An exploded diagram of the structure of the pressure-resistant hysteresis damper according to an embodiment of the present invention; Among them, 1-open retaining ring; 2-second bearing; 3-inner stator; 4-second insulating sheet; 5-insulating tape; 6-coil; 7-first insulating sheet; 8-outer stator; 9-upper cover; 10-first bearing; 11-rotor component; 12-socket; 13-screw with safety hole on the head; 14-spring washer; 15-flat washer; 16-slotted countersunk screw. DETAILED DESCRIPTION
[0013] The pressure-resistant hysteresis damper of the present invention is described in detail below through the accompanying drawings and embodiments.
[0014] This embodiment discloses a pressure-resistant hysteresis damper, such as Figure 1 , Figure 2 As shown, it includes a stator component, a rotor component 11 and a coil 6; the stator component includes an outer stator 8 and an inner stator 3; the outer stator 8 is set to be hollow; the aforementioned inner stator 3 is set in the hollow cavity of the aforementioned outer stator 8; a groove is set on the outer wall of the inner stator 3; the coil 6 is sleeved in the groove and potted; a rotor through hole is set in the middle of the inner stator 3; bearings are set at both ends of the rotor through hole, which are respectively the first bearing 10 and the second bearing 2 in this embodiment; the rotor component 11 is inserted into the rotor through hole and is movably connected with the inner stator 3 through the aforementioned bearings; a socket 12 mounting groove is set on the side wall of the outer stator 8; a potted socket 12 is set in the operating mounting groove; a lead through hole is set on the side wall of the socket 12 mounting groove of the outer stator 8; the lead of the coil 6 is connected with the aforementioned socket 12 through the lead through hole.
[0015] In the embodiment of the present disclosure, the rotor component 11 is T-shaped; the front end of the rotor component 11 is an extended end; the extended end extends from the rotor through hole on the inner stator 3; the tail end is an internal end; an upper cover 9 is provided at one end of the outer stator 8; the tail end of the aforementioned rotor component 11 is located between the upper cover 9 and the inner stator 3; an open retaining ring 1 is sleeved on the extended end of the rotor component 11.
[0016] In the disclosed embodiment, both sides of the coil 6 are provided with insulating sheets, namely, the first insulating sheet 7 and the second insulating sheet 4; the inner wall of the coil 6 is provided with insulating tape 5; the insulating sheet is located between the coil 6 and the side wall of the groove on the inner stator 3; the insulating tape 5 is located between the coil 6 and the bottom wall of the groove on the inner stator 3. After the coil 6 is wound, a glass cloth tape is wrapped around the outer ring of the coil 6, and a syringe is used to inject potting glue into the coil 6, without the need for an additional potting mold. After the potting glue is cured, the glass cloth tape is removed and the overflow glue is cleaned, which is simple and efficient to operate.
[0017] The socket 12 described in this embodiment needs to be potted before installation and use. The potting process includes: mixing solvent-free epoxy resin at room temperature of 25°C in a ratio of 1:2, injecting it into the socket 12 so that it covers the wire, placing it in a vacuum cylinder, evacuating for 15 minutes, taking it out and curing it at room temperature for 4 hours for initial curing; then placing it in a high-temperature box at 80°C for curing for 3 hours, and curing it at room temperature for 2 hours; then injecting oil-resistant silicone rubber into the socket 12 until the end surface is flush, and placing it in an environment with a humidity of 70% for curing for 8 hours.
[0018] like Figure 3 As shown, when assembling the withstand voltage hysteresis damper described in this embodiment, first install the insulating tape 5, the first insulating sheet 7, and the second insulating sheet 4 into the groove on the inner stator 3; then wind the coil 6 into the inner stator 3 and pot it; then install the inner stator 3 into the outer stator 8, pass the lead wire through the outer stator 8 and fix the outer stator 8 through the slotted countersunk screw 16. Then, install the first bearing 10 and the second bearing 2 into the inner stator 3, and then install the rotor component 11 into the inner stator 3; then install the open retaining ring 1 into the protruding end of the rotor component 11; then install the upper cover 9 onto the outer stator 8. Crimping the aforementioned wire with the socket 12, and then using the flat washer 15, the spring washer 14, and the screw 13 with a safety hole on the head to install the socket 12 into the outer stator 8, the assembly of the withstand voltage hysteresis damper is completed.
[0019] When the excitation coil 6 is energized, a magnetic field is generated, and the magnetic field is transmitted to the rotor through the air gap, causing the rotor to produce a hysteresis effect. When the shaft is rotated, the rotor overcomes the hysteresis force and generates a rated torque. Since its excitation current and output torque have a good linear relationship, it can provide a smooth and stable torque that is independent of the speed. Its output torque is only related to the magnitude of the excitation current and has nothing to do with the speed, realizing non-contact torque transmission, and has the advantages of stability, reliability, long service life, and low maintenance cost. At the same time, the coil 6 described in this embodiment has been potted, and the inner cavity of the product can be filled with hydraulic oil during operation. It can work for a long time under hydraulic oil, and can effectively prevent current leakage and breakdown under high voltage electricity, ensuring that the damper operates safely and stably in a high-voltage environment.
Claims
1. A pressure-resistant hysteresis damper, characterized in that: It includes a stator part, a rotor part and a coil; The stator component comprises an outer stator and an inner stator; the outer stator is arranged to be hollow; the inner stator is arranged in the hollow cavity of the outer stator; A groove is provided on the outer wall of the inner stator; the coil is sleeved in the groove and potted; A rotor through hole is arranged in the middle of the inner stator; bearings are arranged at both ends of the rotor through hole; The rotor component is inserted into the rotor through hole and movably connected with the inner stator via the aforementioned bearing; A socket installation groove is arranged on the side wall of the outer stator; a potted socket is arranged in the operation installation groove; A lead through hole is provided on the side wall of the socket mounting groove of the outer stator; The lead wire of the coil is connected to the socket through the lead wire through hole.
2. The pressure-resistant hysteresis damper according to claim 1, characterized in that: The method for potting the socket comprises mixing a solvent-free epoxy resin at room temperature of 14° C. to 34° C. in proportion, injecting the socket into the socket so as to cover the wire, placing the socket into a vacuum cylinder, evacuating the vacuum for 15 minutes, taking the socket out and curing it at room temperature for 4 hours for initial curing; then placing the socket into a high temperature box for curing at 80° C. for 3 hours, and curing it at room temperature for 2 hours; Then inject oil-resistant silicone rubber into the socket until the end surface is flush, and place it in an environment with a humidity of 60%-80% to cure for 8 hours.
3. The pressure-resistant hysteresis damper according to claim 1 or 2, characterized in that: The rotor component is T-shaped; the front end of the rotor component is the extended end; the extended end extends from the rotor through hole on the inner stator; the tail end is the built-in end; an upper cover is provided at one end of the outer stator; the tail end of the aforementioned rotor component is located between the upper cover and the inner stator.
4. The pressure-resistant hysteresis damper according to claim 3, characterized in that: An opening retaining ring is sleeved on the protruding end of the rotor component.
5. The pressure-resistant hysteresis damper according to claim 4, characterized in that: Insulating sheets are provided on both sides of the coil; insulating tape is provided on the inner wall of the coil; The insulating sheet is located between the coil and the side wall of the groove on the inner stator; The insulating tape is located between the coil and the bottom wall of the groove on the inner stator.