A combined damper of acute angle magnetic force and self-generating power

Abstract

The present invention provides a combined acute-angle magnetic force and self-generating damper, comprising an outer layer, an intermediate layer and an inner layer arranged coaxially, wherein the outer layer and the intermediate layer are suitable for relative rotation to form one of the acute-angle magnetic force damper and the self-generating damper; the intermediate layer and the inner layer are suitable for relative rotation to form the other of the acute-angle magnetic force damper and the self-generating damper; the rotating parts in the outer layer, the intermediate layer and the inner layer are connected to the rotating shaft to form a rotating mechanism; the electricity generated by the self-generating damper is selectively supplied to the acute-angle magnetic force excitation coil in the acute-angle magnetic force damper to form an excitation current to generate an acute-angle magnetic force damping force. The present invention combines acute-angle magnetic force damping with self-generating damping, has the performance of self-power supply, and can also utilize the characteristic of acute-angle magnetic force to generate a large damping force at low speed to meet the requirement of large damping during slow motion, and can save the speed change device, simplify the structure, and reduce the cost.

Description

Technical Field

[0001] The present invention relates to the field of electromagnetic damping technology and fitness equipment, and in particular to an acute-angle magnetic force and self-generating combined damper, which can be applied to fitness equipment, automobile retarders, aircraft carrier arresting devices and other equipment requiring damping technology. Background Art

[0002] Although the sharp angle magnetic damper of the prior art can generate greater damping at low speed (twice the damping generated by eddy current), its weakness is that it requires an external power supply. The relevant prior art of the sharp angle magnetic damper can be found in the Chinese invention patent application with application number CN201410763115.6 filed on December 12, 2014 and published on March 11, 2015, the entire contents of which are incorporated herein by reference and become a part of this article.

[0003] On the other hand, although the existing self-generated damper has the function of self-power supply, the damping force generated at low speed is very small and cannot meet the requirements of fitness enthusiasts who need large resistance during slow movements.

[0004] Moreover, the damping force generated by the damper of the fitness equipment in the prior art is relatively small, and one or more speed change devices are required to meet the damping requirements, which will cause the fitness equipment to have a complex structure, many faults, and increase the manufacturing cost. Summary of the invention

[0005] Features and advantages of the invention are set forth in part in the following description, or may be obvious from the description, or may be learned through practice of the invention.

[0006] In order to overcome the problems of the prior art, the present invention provides a combined acute-angle magnetic force and self-generated electricity damper, which combines acute-angle magnetic force damping with self-generated electricity damping. It has the advantages of small size and large damping force, and has the performance of self-power supply. It can also use the characteristic of acute-angle magnetic force to generate a large damping force at low speed to meet the requirement of large damping during slow movement. It can eliminate the speed change device, simplify the structure and reduce costs.

[0007] The technical solution adopted by the present invention to solve the above technical problems is as follows:

[0008] According to one aspect of the present invention, there is provided an acute-angle magnetic and self-generating combined damper, comprising an outer layer, a middle layer and an inner layer arranged coaxially, wherein the outer layer and the middle layer are suitable for relative rotation to form one of the acute-angle magnetic damper and the self-generating damper; the middle layer and the inner layer are suitable for relative rotation to form the other of the acute-angle magnetic damper and the self-generating damper; the rotating parts in the outer layer, the middle layer and the inner layer are connected to the rotating shaft together to form a rotating mechanism; and the electricity generated by the self-generating damper is selectively supplied to the acute-angle magnetic excitation coil in the acute-angle magnetic damper to form an excitation current to generate an acute-angle magnetic damping force.

[0009] According to one embodiment of the present invention, the outer layer, the middle layer and the inner layer respectively form an outer stator, a middle rotor and an inner stator, wherein:

[0010] The outer stator is based on the outer ring, and a number of pairs of power generation induction poles extend from the outside to the inside to form a power generation armature;

[0011] The middle rotor is based on the outer ring, and a plurality of outwardly protruding power generation excitation magnets are arranged on the outer layer of the outer ring, and a plurality of V-shaped structures extending from the outside to the inside are arranged on the inner layer of the outer ring;

[0012] The inner stator comprises an inner ring, and a plurality of pairs of acute-angle magnetic excitation bodies extend outward from the inner ring, and acute-angle magnetic excitation coils are wound around the acute-angle magnetic excitation bodies.

[0013] According to an embodiment of the present invention, the connection between two adjacent arms of each adjacent V-shaped structure forms an induction magnetic pole, and each induction magnetic pole is linked to form an inner circle closed structure.

[0014] According to one embodiment of the present invention, the number of generating induction poles is 12 pairs; the number of generating excitation magnets is 14 pairs; the number of V-shaped structures is 12, and the number of acute-angle magnetic excitation magnets is 5 pairs.

[0015] According to one embodiment of the present invention, the generating excitation body and the generating induction magnetic pole form a three-phase four-pole generating circuit, the pole phase group of each phase is composed of two generating induction magnetic poles, and the induced electromotive force generated by the windings on the two generating induction magnetic poles is a series circuit.

[0016] According to one embodiment of the present invention, the outer layer, the middle layer and the inner layer respectively form an outer rotor, a middle stator and an inner rotor, wherein:

[0017] The outer rotor includes an outer ring, from which a plurality of pairs of excitation magnets protrude inwardly;

[0018] The middle of the middle stator has an annular ring, which is based on the annular ring and extends outwardly a plurality of pairs of power generation induction poles, and inwardly extends a plurality of pairs of acute-angle magnetic excitation bodies, and the acute-angle magnetic excitation bodies include acute-angle magnetic excitation coils;

[0019] The inner rotor includes an inner ring, and a plurality of V-shaped structures extend outward from the inner ring.

[0020] According to an embodiment of the present invention, the connection between two adjacent arms of each adjacent V-shaped structure forms an induction magnetic pole, and each induction magnetic pole is linked to form an outer ring closed structure.

[0021] According to one embodiment of the present invention, the number of generating induction poles is 12 pairs; the number of generating excitation magnets is 14 pairs; the number of acute-angle magnetic excitation magnets is 6 pairs, and the number of V-shaped structures is 9.

[0022] According to one embodiment of the present invention, it includes an automatic circuit switching device, which is configured as follows: when the current generated by the self-generated electrical damper reaches a set threshold, the battery is charged after rectification instead of being transmitted to the acute-angle magnetic excitation coil; when the current generated by the self-generated electrical damper is less than the set threshold, the generated current and the battery current are transmitted in parallel to the acute-angle magnetic excitation coil, thereby generating an acute-angle magnetic damping force to supplement the damping force generated by the self-generated electrical damper.

[0023] According to one embodiment of the present invention, the circuit automatic switching device includes: a. a power supply circuit composed of a self-generating power generation circuit, a rectifier circuit, a storage battery, and a relay coil connected in series; b. a power supply circuit for the acute-angle magnetic excitation coil composed of a self-generating power generation circuit, a rectifier circuit, a storage battery, a sharp-angle magnetic excitation coil, and a switch connected in series; c. a switch, a spring, and a relay form an automatic switching circuit; when the current reaches a set threshold, the relay attracts the magnet on the switch so that the switch overcomes the spring force and opens; when the current is less than the set threshold, the spring force closes the switch.

[0024] The present invention combines the advantages of acute-angle magnetic damping and spontaneous electrical damping into an integrated structure. It has the advantages of small size and large damping force, as well as the performance of self-power supply. It can also utilize the characteristic of acute-angle magnetic force to generate large damping force at low speed to meet the requirement of large damping during slow movement.

[0025] Due to its small size and large damping force, the combined damper of the present invention can be installed on various fitness equipment. The fitness user can directly drive the combined damper with his feet or hands to meet the damping force requirements of the fitness user, eliminating the speed change device, simplifying the structure and reducing costs.

[0026] The combined damper of the present invention is applied to large damping technical occasions such as automobile retarders and aircraft carrier arresting devices. It also has technical features that the existing electromagnetic dampers do not have. Its features in the automobile retarder industry are as follows:

[0027] (1) It can form a closed energy conversion system, and the self-generating device supplies power to the sharp-angle magnetic damper. In this way, it does not need power supply from the external system, nor does it need power storage from the external system. For the car, it is economically meaningful to save a large-capacity power storage device and reduce the weight of the car.

[0028] (2) Its damping effect is much higher than that of the electromagnetic damper in the prior art. The reason is that it can use the kinetic energy of the external system to repeatedly generate more damping force in its own closed system. Specifically, the self-generating device generates electricity to generate damping force, and supplies electricity to the acute-angle magnetic damper. The acute-angle magnetic damper generates damping force again under the action of the excitation current. In this way, the combined damper can have the function of repeatedly generating damping force.

[0029] The combined damper is used in the arresting device of the aircraft carrier, and its technical characteristics are more superior. The reason is that when the carrier-based aircraft lands, it has a speed of more than 260 kilometers per hour, weighs 30 tons, and the runway is about 100 meters long. The landing time is only 2-3 seconds. It is conceivable how much load the damper has to bear in just two or three seconds. If the electromagnetic damper of the existing technology is used, it needs power supply or power storage, or a huge device is needed to consume the power. The technology of the present invention using the energy conversion closed system does not require external power supply or power storage, and has obvious technical advantages.

[0030] By reading the specification, ordinary technicians in this field will have a better understanding of the characteristics and contents of these technical solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in combination with examples, and the advantages and implementation methods of the present invention will become more obvious. The contents shown in the accompanying drawings are only used to explain the present invention and do not constitute any limitation to the present invention in any sense. In the accompanying drawings:

[0032] Figure 1 It is a schematic diagram of the structure of the acute-angle magnetic force and self-generating combined damper according to the first embodiment of the present invention;

[0033] Figure 2 It is a schematic diagram of the outer stator structure of the acute-angle magnetic force and self-generating combined damper of the first embodiment of the present invention;

[0034] Figure 3 It is a schematic diagram of the middle rotor structure of the acute-angle magnetic force and self-generating combined damper of the first embodiment of the present invention;

[0035] Figure 4 Schematic diagram of the inner stator structure of the acute-angle magnetic force and self-generating combined damper of the first embodiment of the present invention;

[0036] Figure 5It is a schematic structural diagram of an acute-angle magnetic force and self-generating combined damper according to a second embodiment of the present invention;

[0037] Figure 6 It is a schematic diagram of the outer rotor structure of the acute-angle magnetic force and self-generating combined damper of the second embodiment of the present invention;

[0038] Figure 7 1 is a schematic diagram of the middle stator structure of the acute-angle magnetic force and self-generating combined damper according to the second embodiment of the present invention;

[0039] Figure 8 2 is a schematic diagram of the inner rotor structure of the acute-angle magnetic force and self-generating combined damper according to the second embodiment of the present invention;

[0040] Fig. 9 It is a schematic diagram of a simple three-phase four-pole and phase-pole-phase group line connection method of the present invention;

[0041] Fig.10 It is a circuit diagram of the automatic switching device of the present invention. DETAILED DESCRIPTION

[0042] For the convenience of description, the "acute-angle magnetic and self-generating combined damper" will be referred to as the "combined damper" below.

[0043] In the combined damper 10 of the first embodiment, a technical solution of combining a V-shaped structure 203 and a generating excitation magnet 202 into a middle rotor 200 is adopted, and an outer stator 100, a middle rotor 200 and an inner stator 300 are respectively provided. Figure 1 In the second embodiment of the combined damper 40, the outer rotor 400, the inner rotor 600, the stator 500 of the technical scheme, such as Figure 5 As shown, the specific implementation modes are described as follows:

[0044] See also Figure 1-Figure 4The first embodiment of the combined damper 10 is composed of a three-layer structure. The first layer of the outer stator 100 is a generating armature made of silicon steel sheet material. 24 generating induction poles 102 extend inward from the outer ring 101. The three-phase winding is wound on the 24 generating induction pole cylindrical iron cores according to the simple three-phase 4-pole connection method (described in detail later). The second layer of the middle rotor 200 is connected to the rotating shaft to form a rotating mechanism, which is also an important device for obtaining damping force. It is based on a ring ring (or outer ring) 201. The outer layer of the ring ring 201 is bonded with 28 permanent magnets as generating excitation bodies 202 for generating excitation. 12 V-shaped structures 203 extend inward from the ring ring 201. The adjacent two arms of each adjacent V-shaped structure 203 are connected to form an induction pole 204, and each induction pole 204 is connected to form an inner ring closed structure 205. The middle rotor material is made of electrical pure iron or steel material and cast in one piece. The third layer inner stator 300 has an inner ring 301, from which 10 acute-angle magnetic excitation bodies 302 extend outwards. The material is stamped silicon steel sheets and uses current excitation to facilitate adjustment of the damping force.

[0045] See also Figure 5-Figure 8 , is a second embodiment of the combined damper 40, which is composed of a three-layer combined structure. The first layer is an outer rotor 400, which is a steel annular ring 401, and 28 power generation excitation magnets 402 are pasted to the inner layer of the annular ring 401. The second layer is a middle stator 500, which is made of stacked silicon steel sheets, with an annular ring 501 in the middle, 24 power generation induction poles 502 extending outward from the outer layer of the annular ring 501, and 12 acute-angle magnetic excitation magnets 503 extending inward from the inner layer of the annular ring 501. The acute-angle magnetic excitation magnets 503 are excited by current, which is convenient for adjusting the size of the acute-angle magnetic damping force. The third layer is an inner rotor 600, which is composed of 9 V-shaped structures 602 extending outward from the inner ring 601 of the inner rotor 600, and the material is electrical pure iron or steel material integrally cast. The connection between two adjacent arms 6021 and 6022 of each adjacent V-shaped structure 602 forms an induction magnetic pole 603 , and each induction magnetic pole 603 is linked to form an outer ring closed structure 604 .

[0046] In the first and second embodiments, the number of the generating inductive magnetic poles 102 and 502 are both 24, and the number of the generating inductive excitation bodies 202 and 402 are both 28. After being combined, they should be connected into a 6-phase 4-pole generating circuit according to conventional technical means. The present invention adopts a simple connection line technical means to connect the 6-phase 4-pole generating circuit into a 3-phase 4-pole generating circuit, thereby simplifying the self-generated output and rectification circuit.

[0047] The specific implementation method is to take phase A as an example, where phase A is composed of four polar phase groups A1, A2, A3, and A4. Fig. 9As shown, each pole phase group is composed of two generating induction magnetic poles, and the induced electromotive force generated by the windings on the two generating induction magnetic poles is a series circuit.

[0048] Fig. 9 The arrows in the figure indicate the current direction of each phase group at a certain moment. Fig. 9 The head T and tail W of each polar phase group are indicated in the figure to facilitate the description of the connection method of each polar phase group. For example, the specific connection method of phase A is: the head of A1 is one end of the output of phase A, the tail of A1 is connected to the tail of A2, the head of A2 is connected to the head of A3, the tail of A3 is connected to the tail of A4, and the head of A4 is the other end of the output of phase A.

[0049] In order to solve the problem that the combined damper generates insufficient power at low speeds, resulting in a very small damping force, the present invention designs a circuit automatic switching device, such as Fig.10 As shown ( Fig.10 Only the circuits related to automatic switching are drawn in the circuit. The main structure consists of a power supply circuit composed of three-phase self-generation, three-phase full-wave (bridge) rectification, battery E, and relay coil; a circuit automatic switching circuit consists of a spring S, switch K, and relay J; and an acute-angle magnetic excitation power supply circuit consists of a battery E, switch K, and acute-angle magnetic excitation coil L. The principle of automatic switching of the circuit is: when the self-generation is large, the self-generation power source charges the battery E through rectification, and the charging current generates a magnetic force through the relay coil to attract the electromagnet on the switch K, so that the switch is opened, and the acute-angle magnetic excitation coil L does not work without current. When the self-generation is small, the pulling force of the spring S on the switch K is greater than the attraction of the relay J, the switch K is turned on, and the acute-angle magnetic excitation coil L has current passing through it, generating an acute-angle magnetic damping force to make up for the lack of the self-generation damping force at this time, so as to meet the requirements of fitness enthusiasts to obtain a large damping force even when performing slow movements.

[0050] The combined damper of the present invention has the following technical features:

[0051] See also Figure 3 and Figure 8 In the V-shaped structures in the first and second embodiments, two adjacent arms of each V-shaped structure form an induction magnetic pole, and the induction magnetic poles are connected to each other in a closed structure. This technical method improves the defect of the original acute angle magnetic damper (please refer to the Chinese invention patent application with application number CN201410763115.6 filed on December 12, 2014 and published on March 11, 2015) in preventing poor vibration effect. The acute angle magnetic damper improved by this technical method works without vibration and has very smooth dynamic feeling.

[0052] See also Figure 1 and Figure 5The middle rotor or middle stator in the first and second embodiments both work in double layers, the inner layer generates acute-angle magnetic damping force, and the outer layer generates spontaneous electrical damping force. When working, they can be selected to work in single layer or double layer according to the needs of the fitness user. Since the combined damper generates damping force in double layers, its damping force is much greater than that of a single-layer damper of the same volume. When installed on various fitness equipment, a direct drive technology method can be adopted, eliminating the speed change device and reducing costs.

[0053] See also Fig. 9 , there are 24 generating induction poles and 28 generating excitation poles, forming a simple 3-phase 4-pole self-generating circuit. When the speed of this 3-phase simple technology is 214 rpm, the generating frequency can reach 50HF. The combined damper prototype proves that the technical solution works well. The combined damper is directly driven by the foot pedal. When the speed is 60-100 rpm, the power generation reaches 120W-260W, and the self-generating damping force generated can meet the needs of fitness enthusiasts. Combined with the technology of the circuit automatic switching device mentioned above, the problem of insufficient damping force of the fitness damper at low speed is fundamentally solved.

[0054] The combined damper of the present invention is applied to large damping technical occasions such as automobile retarders and aircraft carrier arresting devices. It also has technical features that the existing electromagnetic dampers do not have. Its features in the automobile retarder industry are as follows:

[0055] (1) It can form a closed energy conversion system, and the self-generating device supplies power to the sharp-angle magnetic damper. In this way, it does not need power supply from the external system, nor does it need power storage from the external system. For the car, it is economically meaningful to save a large-capacity power storage device and reduce the weight of the car.

[0056] (2) Its damping effect is much higher than that of the electromagnetic damper in the prior art. The reason is that it can use the kinetic energy of the external system to repeatedly generate more damping force in its own closed system. Specifically, the self-generating device generates electricity to generate damping force, and supplies electricity to the acute-angle magnetic damper. The acute-angle magnetic damper generates damping force again under the action of the excitation current. In this way, the combined damper can have the function of repeatedly generating damping force.

[0057] The combined damper is used in the arresting device of the aircraft carrier, and its technical characteristics are more superior. The reason is that when the carrier-based aircraft lands, it has a speed of more than 260 kilometers per hour, weighs 30 tons, and the runway is about 100 meters long. The landing time is only 2-3 seconds. It is conceivable how much load the damper has to bear in just two or three seconds. If the electromagnetic damper of the existing technology is used, it needs power supply or power storage, or a huge device is needed to consume the power. The technology of the present invention using the energy conversion closed system does not require external power supply or power storage, and has obvious technical advantages.

[0058] The preferred embodiments of the present invention are described above with reference to the accompanying drawings. A person skilled in the art may implement the present invention in a variety of variations without departing from the scope and essence of the present invention. For example, a feature shown or described as part of one embodiment may be used in another embodiment to obtain another embodiment. The above are only preferred feasible embodiments of the present invention, and do not limit the scope of rights of the present invention. Any equivalent changes made using the contents of the present specification and the accompanying drawings are included in the scope of rights of the present invention.

Claims

1. An acute angle magnetic force and self-generating combined damper, characterized in that: It includes an outer layer, a middle layer and an inner layer arranged coaxially, wherein: The outer layer and the middle layer are suitable for relative rotation to form one of an acute angle magnetic damper and a spontaneous electrical damper; The middle layer and the inner layer are adapted to rotate relative to each other to form the other of an acute angle magnetic damper and a spontaneous electrical damper; The rotating parts in the outer layer, the middle layer and the inner layer are connected to the rotating shaft to form a rotating mechanism; The electricity generated by the self-generated electric damper is selectively supplied to the acute angle magnetic excitation coil in the acute angle magnetic damper to form an excitation current and generate an acute angle magnetic damping force; The outer layer, the middle layer and the inner layer respectively form an outer stator, a middle rotor and an inner stator, wherein: The outer stator is based on the outer ring, and a plurality of pairs of power generation induction poles extend from the outside to the inside to form a power generation armature; The middle rotor is based on the outer ring, and a plurality of outwardly protruding power generation excitation magnets are arranged on the outer layer of the outer ring, and a plurality of V-shaped structures extending from the outside to the inside are arranged on the inner layer of the outer ring; The inner stator comprises an inner ring, and a plurality of pairs of acute-angle magnetic excitation bodies extend outward from the inner ring, and the acute-angle magnetic excitation coils are wound around the acute-angle magnetic excitation bodies.

2. The acute angle magnetic force and self-generating combined damper according to claim 1, characterized in that: The connection between two adjacent arms of each adjacent V-shaped structure forms an induction magnetic pole, and each induction magnetic pole is linked to form an inner circle closed structure.

3. The acute angle magnetic force and self-generating combined damper according to claim 1, characterized in that: The number of the power generation induction poles is 12 pairs; the number of the power generation excitation magnets is 14 pairs; the number of the V-shaped structures is 12, and the number of the acute-angle magnetic excitation magnets is 5 pairs.

4. The acute-angle magnetic and self-generating combined damper according to claim 3, characterized in that: The generating excitation body and the generating induction magnetic pole form a three-phase four-pole generating circuit, each phase pole group is composed of two generating induction magnetic poles, and the induced electromotive force generated by the windings on the two generating induction magnetic poles is a series circuit.

5. An acute angle magnetic and self-generating combined damper, characterized in that: It includes an outer layer, a middle layer and an inner layer arranged coaxially, wherein: The outer layer and the middle layer are suitable for relative rotation to form one of an acute angle magnetic damper and a spontaneous electrical damper; The middle layer and the inner layer are adapted to rotate relative to each other to form the other of an acute angle magnetic damper and a spontaneous electrical damper; The rotating parts in the outer layer, the middle layer and the inner layer are connected to the rotating shaft to form a rotating mechanism; The electricity generated by the self-generated electric damper is selectively supplied to the acute angle magnetic excitation coil in the acute angle magnetic damper to form an excitation current and generate an acute angle magnetic damping force; The outer layer, the middle layer and the inner layer respectively form an outer rotor, a middle stator and an inner rotor, wherein: The outer rotor comprises an outer ring, from which a plurality of pairs of excitation magnets protrude inwardly; The middle of the middle stator has an annular ring, which is based on the annular ring and extends outwardly a plurality of pairs of power generation induction poles, and inwardly extends a plurality of pairs of acute-angle magnetic excitation bodies, on which the acute-angle magnetic excitation coils are wound; The inner rotor comprises an inner ring, and a plurality of V-shaped structures extend outward from the inner ring.

6. The acute-angle magnetic and self-generating combined damper according to claim 5, characterized in that: The connection between two adjacent arms of each adjacent V-shaped structure forms an induction magnetic pole, and each induction magnetic pole is linked to form an outer circle closed structure.

7. The acute-angle magnetic and self-generating combined damper according to claim 5, characterized in that: The number of the power generation induction poles is 12 pairs; the number of the power generation excitation magnets is 14 pairs; the number of the acute-angle magnetic excitation magnets is 6 pairs, and the number of the V-shaped structures is 9.

8. The acute angle magnetic force and self-generating combined damper according to claim 1, characterized in that: It comprises an automatic circuit switching device, which is configured as follows: when the current generated by the self-generated electrical damper reaches a set threshold, the current is rectified to charge the battery instead of being transmitted to the acute-angle magnetic excitation coil; when the current generated by the self-generated electrical damper is less than the set threshold, the generated current and the battery current are transmitted in parallel to the acute-angle magnetic excitation coil, thereby generating an acute-angle magnetic damping force to supplement the damping force generated by the self-generated electrical damper.

9. The acute-angle magnetic and self-generating combined damper according to claim 8, characterized in that: The circuit automatic switching device comprises: a. a power supply circuit consisting of a self-generating circuit, a rectifier circuit, a storage battery and a relay coil connected in series; b. a power supply circuit for the acute-angle magnetic excitation coil consisting of a self-generating circuit, a rectifier circuit, a storage battery, a sharp-angle magnetic excitation coil and a switch connected in series; c. a switch, a spring and a relay forming an automatic switching circuit; when the current reaches a set threshold, the relay attracts the magnet on the switch so that the switch overcomes the spring force and opens; when the current is less than the set threshold, the spring force closes the switch.

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