Inertia damping and energy recovery device based on permanent magnet coupling principle

Abstract

The invention provides an inertia vibration attenuation and energy recovery device based on a permanent magnet coupling principle, and relates to the technical field of vibration attenuation equipment, the inertia vibration attenuation and energy recovery device comprises an upper connecting block, a damping assembly, a lead screw, a power generation device, a lower connecting block, an elastic piece and a peripheral circuit; the power generation device comprises a rotating mass block and a stator winding which are coaxially arranged, a plurality of permanent magnets with alternating polarities are arranged on the outer wall of the rotating mass block in the circumferential direction, the upper ends and the lower ends of a damping assembly and an elastic piece are connected with an upper connecting block and a lower connecting block respectively, the top end of a lead screw is connected with the upper connecting block, and the lower side of the lead screw is in threaded connection with the rotating mass block. The input end of the peripheral circuit is connected with the stator winding; under external vibration of the upper connecting block and the lower connecting block, the lead screw does reciprocating rectilinear motion, the rotating mass block rotates, induced current is generated on the stator winding, and a peripheral circuit rectifies and filters the induced current. According to the device, a peripheral circuit is used for replacing a traditional complex controller, the structure is simple, manufacturing is convenient, and cost is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of damping devices, in particular to an inertia damping and energy recovery device based on permanent magnet coupling principle. BACKGROUND

[0002] In actual production, due to the unevenness of the roadway and the sudden change of the coal seam properties, strong impact vibration will be generated under the working conditions of cutting, slotting and bottoming of the mining equipment, which will cause overload impact and even damage to the mechanical structure of the equipment, thereby affecting the service life of the equipment, reducing the reliability of the equipment, and even causing production accidents.

[0003] In order to protect the mining equipment and prolong its service life, various active dampers and semi-active dampers exist in the mining equipment.

[0004] In the process of implementing the present application, the inventors found that at least the following problems exist in the prior art: whether it is an active damper or a semi-active damper, its cost is relatively high and an additional control system is needed, which is not good in the use of complex working conditions in the mine and is easy to be damaged. SUMMARY

[0005] The present application aims to at least partially solve one of the problems in the related art.

[0006] Therefore, the present application aims to provide an inertia damping and energy recovery device based on permanent magnet coupling principle, which does not need a control system, has a simple structure, is easy to manufacture and has a low cost.

[0007] To achieve the above-mentioned purpose, the present application provides an inertia damping and energy recovery device based on permanent magnet coupling principle, comprising an upper connecting block, a damping assembly, a lead screw, a power generation device, a lower connecting block, an elastic member and a peripheral circuit. The power generation device comprises a rotating mass and a stator winding arranged coaxially, the outer wall of the rotating mass is provided with a plurality of permanent magnets with alternating polarity in the circumferential direction, the upper and lower ends of the damping assembly and the elastic member are connected with the upper connecting block and the lower connecting block respectively, the top end of the lead screw is connected with the upper connecting block, the lower side of the lead screw is threadedly connected with the rotating mass, and the input end of the peripheral circuit is connected with the stator winding. Under external vibration, the lead screw makes reciprocating linear motion, the rotating mass rotates, an induced current is generated on the stator winding, and the peripheral circuit rectifies and filters the induced current.

[0008] The inertial vibration damping and energy recovery device based on the permanent magnet coupling principle has the advantages that: the device uses a peripheral circuit to replace a traditional complex controller, so the structure is simple, the manufacturing is convenient, and the cost is low; the device converts the up-down vibration of the upper connecting block and the lower connecting block into the rotary motion of the rotary mass, uses the electromagnetic induction between the permanent magnet and the stator winding to generate electric energy, and effectively collects the originally wasted energy; the device has good inertial vibration damping performance while realizing energy recovery, and the elastic member and the damping assembly can effectively absorb and attenuate external vibration energy.

[0009] According to an embodiment of the present application, the cross-sectional shape of the upper connecting block and the lower connecting block is circular or polygonal.

[0010] According to an embodiment of the present application, the damping assembly comprises an auxiliary sleeve, an outer sleeve, a shaft core, a pressing block and a damping block, the bottom end of the shaft core is connected with the lower connecting block, the damping block is sleeved on the periphery of the shaft core, the top end of the auxiliary sleeve is connected with the upper connecting block, the pressing block is arranged at the bottom end of the auxiliary sleeve and is in contact with the damping block, and the outer sleeve is sleeved on the periphery of the auxiliary sleeve, the pressing block and the damping block.

[0011] According to an embodiment of the present application, the damping assembly further comprises a limiting block arranged at the top end of the outer sleeve and the shaft core, for limiting the upper connecting block.

[0012] According to an embodiment of the present application, the elastic member is a spring.

[0013] According to an embodiment of the present application, the power generation device comprises a shell, the stator winding is arranged on the inner wall of the shell, the rotary mass is arranged in the shell, the permanent magnet comprises a first permanent magnet and a second permanent magnet, the first permanent magnet and the second permanent magnet have alternating polarities and are attached to the surface of the rotary mass.

[0014] According to an embodiment of the present application, two fasteners are further included, one of the fasteners connects the bottom end of the lower connecting block and the shaft core, and the other of the fasteners connects the limiting block and the top end of the shaft core.

[0015] According to an embodiment of the present application, a first bolt connection pair and a second bolt connection pair are further included, the first bolt connection pair is arranged on the upper connecting block and is used to be connected with the first end of an external vibration damping mechanism, and the second bolt connection pair is arranged on the lower connecting block and is used to be connected with the second end of the external vibration damping mechanism.

[0016] Additional aspects and advantages of the present application will be made apparent from the following description. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. Wherein: Figure 1 This is a schematic diagram of an inertial vibration reduction and energy recovery device based on the principle of permanent magnet coupling, proposed in an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the arrangement of permanent magnets on a rotating mass block according to an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1-Upper connecting block, 2-Damping assembly, 3-First bolt connection pair, 4-Lead screw, 5-Generator, 6-Lower connecting block, 7-Fastener, 8-Elastic element, 9-Second bolt connection pair, 10-External circuit, 21-Limiting block, 22-Auxiliary sleeve, 23-Outer sleeve, 24-Shaft core, 25-Pressure block, 26-Damping block, 51-Stator winding, 52-Rotating mass block, 53-First permanent magnet, 54-Second permanent magnet. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and should not be construed as limiting the invention. Rather, embodiments of the invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0021] The following is for reference. Figure 1 , Figure 2 This describes an inertial vibration reduction and energy recovery device based on the principle of permanent magnet coupling according to an embodiment of the present invention.

[0022] See Figure 1 According to an embodiment of the present invention, an inertial vibration reduction and energy recovery device based on the principle of permanent magnet coupling includes an upper connecting block 1, a damping component 2, a lead screw 4, a power generation device 5, a lower connecting block 6, an elastic element 8, and a peripheral circuit 10.

[0023] The power generation device 5 comprises a rotating mass 52 and a stator winding 51 coaxially arranged, the outer wall of the rotating mass 52 is provided with a plurality of polarity-alternating permanent magnets in the circumferential direction, the upper and lower ends of the damping assembly 2 and the elastic member 8 are connected with the upper connecting block 1 and the lower connecting block 6 respectively, the top end of the lead screw 4 is connected with the upper connecting block 1, the lower side of the lead screw 4 is threadedly connected with the rotating mass 52, and the input end of the peripheral circuit 10 is connected with the stator winding 51. Under the external vibration, the upper connecting block 1 and the lower connecting block 6 make the lead screw 4 move linearly reciprocatingly, the rotating mass 52 rotates, the stator winding 51 generates induced current, and the peripheral circuit 10 rectifies and filters the induced current.

[0024] The upper connecting block 1 and the lower connecting block 6 are used to be connected with the external vibration-reducing mechanism, which can be a mining vehicle, a mining device or the like. The elastic member 8 can store energy and gradually release elastic potential energy. The elastic member 8 can also provide a restoring force for the upper connecting block 1 to return to the initial position. The specific type of the elastic member 8 is set according to actual needs, and is not limited. In an example, the elastic member 8 is a spring, which is simple in structure and easy to integrate. The number of the elastic member 8 is set according to actual needs, and is not limited. The damping assembly 2 can suppress oscillation and accelerate the overall device to return to the equilibrium state. The top end of the lead screw 4 and the upper connecting block 1 can be connected by welding, threaded connection or the like. The lead screw 4 moves synchronously with the upper connecting block 1, the lead screw 4 has a large thread angle, and the friction coefficient between the lead screw 4 and the rotating mass 52 is low. Therefore, when the lead screw 4 moves in the axial direction, the rotating mass 52 rotates. The peripheral circuit 10 is composed of electronic elements, and can use a rectifier bridge and a filter to realize rectification and filtering of the induced current.

[0025] When vibration or impact occurs, the upper connecting block 1 and the lower connecting block 6 of the mining inertia vibration-reducing and energy-recovering device move relatively, the lead screw 4 converts linear motion into rotational motion of the rotating mass 52, and the rotating mass 52 generates an inertia force proportional to the relative acceleration. In this process, vibration energy or impact energy is converted into mechanical energy. The stator winding 51 cuts the magnetic induction lines of the permanent magnets on the rotating mass 52, thereby generating induced current on the stator winding 51. The induced current can be used to supply power to low-power electrical elements of the mining equipment after being processed by the peripheral circuit. In this process, mechanical energy is converted into electrical energy.

[0026] The inertial vibration damping and energy recovery device based on the permanent magnet coupling principle according to embodiments of the present invention has a simple structure, is easy to manufacture, and has a low cost by replacing the traditional complex controller with an external circuit. The device of the present invention converts the up-and-down vibration of the upper and lower connecting blocks into the rotational motion of a rotating mass block, and utilizes the electromagnetic induction between the permanent magnet and the stator winding to generate electrical energy, thus effectively collecting the energy that would otherwise be wasted. While achieving energy recovery, the device of the present invention also possesses good inertial vibration damping performance; the synergistic effect of the elastic element and the damping component can effectively absorb and attenuate external vibration energy.

[0027] In some embodiments, the cross-sectional shapes of the upper connecting block 1 and the lower connecting block 6 are circular or polygonal, or other regular or irregular shapes. Different cross-sectional shapes can better adapt to mining equipment or mining vehicles.

[0028] like Figure 1 As shown, in some embodiments, the inertial vibration damping and energy recovery device based on the permanent magnet coupling principle further includes a first bolt connection pair 3 and a second bolt connection pair 9. The first bolt connection pair 3 is disposed on the upper connecting block 1 and is used to connect to the first end of the external vibration damping mechanism. The second bolt connection pair 9 is disposed on the lower connecting block 6 and is used to connect to the second end of the external vibration damping mechanism. The number of each of the first bolt connection pair 3 and the second bolt connection pair 9 is selected according to actual needs and is not limited thereto.

[0029] like Figure 1 As shown, in some embodiments, the damping assembly 2 includes an auxiliary sleeve 22, an outer sleeve 23, a shaft core 24, a pressure block 25, and a damping block 26. The bottom end of the shaft core 24 is connected to the lower connecting block 6, and the damping block 26 is fitted around the shaft core 24. The top end of the auxiliary sleeve 22 is connected to the upper connecting block 1. The pressure block 25 is located at the bottom end of the auxiliary sleeve 22 and contacts the damping block 26. The outer sleeve 23 is fitted around the auxiliary sleeve 22, the pressure block 25, and the damping block 26. The shaft core 24 and the lower connecting block 6 can be connected by welding or threading. The shaft core 24 is the central support of the entire damping assembly 2, providing a mounting base for the damping block 26 and guiding the vertical movement of the auxiliary sleeve 22. The damping block 26 is an energy-dissipating element, and its material is selected according to actual needs and is not limited. For example, the material of the damping block 26 is rubber, which has the advantage of low cost. The outer sleeve 23 serves as a limit to prevent the damping block 26 from shifting laterally. The pressure block 25 applies a preload to the damping block 26 to ensure that it always maintains good contact with the shaft core 24, thereby improving the stability of the damping response.

[0030] The damping assembly 2 further comprises a limiting block 21 arranged at the top end of the outer sleeve 23 and the shaft core 24, for limiting the upper connecting block 1. When the external vibration amplitude is large, the maximum amplitude of the downward movement of the upper connecting block 1 will be limited by the limiting block 21, thereby improving the stability of the entire device. The inertia damping and energy recovery device based on the principle of permanent magnet coupling further comprises two fasteners 7, one fastener 7 connecting the lower connecting block 6 and the bottom end of the shaft core 24, and the other fastener connecting the limiting block 21 and the top end of the shaft core 24. The specific type of the fastener 7 is set according to actual needs, for example, the fastener 7 is a screw. Thus, the shaft core 24, the limiting block 21 and the lower connecting block 6 form a detachable connection, which is easy to maintain and replace.

[0031] In combination Figure 1 And Figure 2 As shown in FIG. 5, in some embodiments, the power generation device 5 comprises a shell, the stator winding 51 is arranged on the inner wall of the shell, and the rotating mass 52 is arranged in the shell, and the shell protects the stator winding 51 and the rotating mass 52. The bottom end of the shell is connected to the lower connecting block 6 by a fastener. The permanent magnet comprises a first permanent magnet 53 and a second permanent magnet 54, the first permanent magnet 53 and the second permanent magnet 54 are alternately polarized, and are attached to the surface of the rotating mass 52. Attaching the surface of the permanent magnet to the rotating mass 52 makes the structure have the advantages of simple structure, low manufacturing cost, small moment of inertia, etc.

[0032] It should be noted that in the description of the present application, the terms "first", "second" and the like are only used for the purpose of description and should not be understood as indicating or implying relative importance. In addition, in the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0033] In the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "over", "above" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. The first feature is "under", "below" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0035] In the description of the present application, the terms "left", "right", "front", "back", and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0036] Any process or method descriptions, or any other descriptions herein, can be understood as representing embodiments of implementations comprising a computer- readable medium or machine-readable medium encoded with instructions that, when executed by one or more data processing devices, cause the data processing devices to perform the functions described herein. The term "machine-readable medium" or "computer-readable medium" includes any medium that can be accessed by a computer or data processing device. By way of example and not limitation, such a medium can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer or data processing device. The foregoing description of embodiments of the present application has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the application to the precise form disclosed. Many modifications and variations are possible in light of the above teaching. It is intended that the scope of the application be limited not with this detailed description.

[0037] In the description of the present application, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that the described particular feature, structure, material or characteristic is included in at least one embodiment or example of the present application. The illustrative expressions are not necessarily referring to the same embodiment or example, and are used to more clearly describe the embodiments or examples of the present application. Moreover, the description of a particular feature, structure, material or characteristic is not intended to be a limitation on the present application, and the particular feature, structure, material or characteristic can be combined in any one or more embodiments or examples in a suitable manner.

[0038] Although embodiments of the present application have been shown and described above, it is to be understood that the above-described embodiments are exemplary only, and are not to be taken as limiting the present application, and that changes, modifications, substitutions and variations can be made to the above-described embodiments within the scope of the present application.

Claims

1. An inertial vibration damping and energy recovery device based on the principle of permanent magnet coupling, characterized in that, It includes an upper connecting block (1), a damping assembly (2), a lead screw (4), a power generation device (5), a lower connecting block (6), an elastic element (8), and a peripheral circuit (10). The power generation device (5) includes a rotating mass block (52) and a stator winding (51) arranged coaxially. The outer wall of the rotating mass block (52) is provided with a plurality of permanent magnets with alternating polarities along the circumferential direction. The upper and lower ends of the damping component (2) and the elastic element (8) are respectively connected to the upper connecting block (1) and the lower connecting block (6). The top end of the lead screw (4) is connected to the upper connecting block (1). The lower side of the lead screw (4) is threadedly connected to the rotating mass block (52). The input end of the peripheral circuit (10) is connected to the stator winding (51). Under external vibration, the upper connecting block (1) and the lower connecting block (6) cause the lead screw (4) to reciprocate linearly, the rotating mass block (52) to rotate, and an induced current to be generated on the stator winding (51). The peripheral circuit (10) rectifies and filters the induced current.

2. The inertial vibration reduction and energy recovery device based on the permanent magnet coupling principle according to claim 1, characterized in that, The cross-sectional shape of the upper connecting block (1) and the lower connecting block (6) is circular or polygonal.

3. The inertial vibration reduction and energy recovery device based on the permanent magnet coupling principle according to claim 1, characterized in that, The damping assembly (2) includes an auxiliary sleeve (22), an outer sleeve (23), a shaft core (24), a pressure block (25), and a damping block (26). The bottom end of the shaft core (24) is connected to the lower connecting block (6). The damping block (26) is sleeved around the shaft core (24). The top end of the auxiliary sleeve (22) is connected to the upper connecting block (1). The pressure block (25) is located at the bottom end of the auxiliary sleeve (22) and contacts the damping block (26). The outer sleeve (23) is sleeved around the auxiliary sleeve (22), the pressure block (25), and the damping block (26).

4. The inertial vibration reduction and energy recovery device based on the permanent magnet coupling principle according to claim 3, characterized in that, The damping assembly (2) also includes a limiting block (21), which is located at the top of the outer sleeve (23) and the shaft core (24) and is used to limit the upper connecting block (1).

5. The inertial vibration reduction and energy recovery device based on the permanent magnet coupling principle according to claim 1, characterized in that, The elastic element (8) is a spring.

6. The inertial vibration reduction and energy recovery device based on the permanent magnet coupling principle according to claim 1, characterized in that, The power generation device (5) includes a housing, the stator winding (51) is disposed on the inner wall of the housing, the rotating mass block (52) is disposed inside the housing, and the permanent magnet includes a first permanent magnet (53) and a second permanent magnet (54), the first permanent magnet (53) and the second permanent magnet (54) have alternating polarities and are attached to the surface of the rotating mass block (52).

7. The inertial vibration reduction and energy recovery device based on the permanent magnet coupling principle according to claim 4, characterized in that, It also includes two fasteners (7), one of which connects the lower connecting block (6) and the bottom end of the shaft core (24), and the other of which connects the limiting block (21) to the top end of the shaft core (24).

8. The inertial vibration reduction and energy recovery device based on the permanent magnet coupling principle according to any one of claims 1 to 7, characterized in that, It also includes a first bolt connection pair (3) and a second bolt connection pair (9). The first bolt connection pair (3) is located on the upper connecting block (1) and is used to connect to the first end of the external vibration damping mechanism. The second bolt connection pair (9) is located on the lower connecting block (6) and is used to connect to the second end of the external vibration damping mechanism.

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