Active automatic suction and release electric permanent magnet

Abstract

This invention relates to a lifting magnet, and more particularly to an active automatic lifting electro-permanent magnet. It includes an electro-permanent magnet, a triggering device, a manual control panel, and a lifting connection component. The upper part of the electro-permanent magnet has a chamber containing an electrical control unit and an energy storage power supply. The energy storage power supply provides the necessary electrical energy to the electrical control unit and the electro-permanent magnet. The triggering device is located on top of the electro-permanent magnet. The lifting connection component includes a boom, with both ends connected to the top of the electro-permanent magnet, providing external triggering for the triggering device. The triggering device receives the external triggering and sends a trigger signal. The electrical control unit receives the trigger signal, detects the magnetic characteristic state of the electro-permanent magnet, and generates a control current to change the magnetic characteristic state of the electro-permanent magnet, causing it to enter a lifting or releasing state. Magnetic poles are provided on the working surface at the bottom of the electro-permanent magnet. This invention has a simple structure, safe suction force, and is convenient for maintenance and repair, enabling automatic material suction and release.

Description

Technical Field

[0001] This invention relates to a lifting magnet, and more particularly to an active automatic lifting electro-permanent magnet. Background Technology

[0002] A lifting electromagnet is a special type of electromagnet that uses the object being lifted as its armature. It attracts the object by utilizing the magnetic field generated when the coil is energized. It must be continuously energized during lifting operations. Currently, common lifting electromagnets are manually operated, either via a control panel or remote control. This operation is cumbersome, has low automation, low efficiency, and high production costs. Therefore, there is an urgent need for an active, automatic lifting electromagnet to achieve automated lifting and releasing, thereby improving work efficiency. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide an active automatic lifting electro-permanent magnet, thereby solving the problems of cumbersome operation, low automation, low work efficiency, and high production costs associated with existing lifting electro-permanent magnets that are manually operated, controlled by a panel, or remotely controlled.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This invention provides an active automatic lifting electro-permanent magnet, comprising an electro-permanent magnet, a triggering device, a manual control panel, and a lifting connection component. The electro-permanent magnet has a chamber at its upper part, housing an electrical control unit and an energy storage power supply. The energy storage power supply stores energy through external charging and provides the necessary power to the electrical control unit and the electro-permanent magnet. Both the triggering device and the lifting connection component are located on top of the electro-permanent magnet. The lifting connection component includes a pantograph, the bow of which is used to connect to external lifting equipment. Both ends of the pantograph are connected to the electro-permanent magnet and provide external triggering for the triggering device. The triggering device receives the external triggering and sends a trigger signal. The electrical control unit receives the trigger signal, detects the magnetic characteristic state of the electro-permanent magnet, and generates a control current to the electro-permanent magnet according to the received trigger signal, changing the magnetic characteristic state of the electro-permanent magnet to either a lifting state or a release state. Magnetic poles are provided on the working surface of the bottom of the electro-permanent magnet. In the lifting state, the working surface of the magnetic poles exhibits permanent magnetic properties; in the release state, the working surface of the magnetic poles is magnetically neutral.

[0006] In one possible implementation, the lifting connection component further includes a lifting connection seat and a connecting pin, wherein the lifting connection seat is fixed to the top of the electro-permanent magnet, and the two open ends of the pantograph are floatingly connected to the lifting connection seat via the connecting pin. The lifting connection seat provides vertical movement space for the connecting pin, and the movement space satisfies the full triggering and full disengagement of the triggering device.

[0007] In one possible implementation, the lifting connection seat includes two parallel spaced-apart support plates, the gap between which allows the pantograph to slide flexibly therebetween;

[0008] In one possible implementation, both ends of the two bearing plates are provided with coaxial waist-shaped through slots, and both open ends of the pantograph are provided with through holes for the connecting pin to pass through. The two ends of the connecting pin are respectively accommodated in the corresponding waist-shaped through slots of the two bearing plates and can move up and down within the waist-shaped through slots.

[0009] In one possible implementation, a contact is provided at one open end of the pantograph, and the triggering device is located directly below the contact; when the working surface of the magnetic pole contacts the magnetically lifted object, the connecting pin slides upward along the waist-shaped through-slot hole by means of the lifting mechanism of the lifting equipment, the contact leaves the triggering device, and the triggering device is deactivated.

[0010] When the lifting mechanism of the hoisting equipment descends and releases, the connecting pin slides down along the waist-shaped through-hole due to the weight of the pantograph, and the contact approaches and presses against the triggering device, thus triggering the triggering device.

[0011] In one possible implementation, each triggering of the triggering device excites the electrical control unit to output an excitation magnetomotive force to the electro-permanent magnet, changing the magnetic characteristic state of the working surface of the magnetic pole that was maintained due to the previous triggering, and the trigger holding time ensures that the magnetic characteristic state is fully changed.

[0012] In one possible implementation, the triggering mode of the triggering device is proximity photoelectric triggering, contact pressure contact triggering, magnetic switch or proximity switch.

[0013] In one possible implementation, the triggering device is a pin sensor consisting of a gravity sensor installed in the connecting pin, which senses changes in gravity and performs the triggering function; or, a proximity photoelectric switch, magnetic switch, or limit switch is installed at the bottom of the connecting pin to perform a single-point triggering function.

[0014] In one possible implementation, the manual control panel includes a charging interface, a switching interlock, and a manual magnetization / demagnetization control switch. The charging interface is used to connect an external power source to charge and store energy for the energy storage power source. The switching interlock switches between the automatic magnetization / demagnetization mode of the active automatic magnetization lifting system and the manual control mode in emergency situations. In the manual control mode, the lifting or releasing state of the magnetization / demagnetization control switch is used to manually control the magnetization / demagnetization state.

[0015] In one possible implementation, when the switching interlock switches to the automatic suction and release mode, the triggering device is activated and the manual magnetization / demagnetization control switch is deactivated; when the switching interlock switches to the manual control mode, the triggering device is deactivated and the manual magnetization / demagnetization control switch is activated.

[0016] In one possible implementation, a status indicator is provided on the top of the electro-permanent magnet, which is a multi-color constantly lit indicator light.

[0017] The advantages and beneficial effects of this invention are as follows: This invention provides an active automatic suction and release lifting electro-permanent magnet, which is self-powered and does not require external power supply. It is driven by the weight of the pantograph after the lifting mechanism of the lifting equipment is raised or lowered, triggering the triggering device. Each triggering of the triggering device excites the electrical control unit to output excitation magnetomotive force to the electro-permanent magnet, changing the magnetic characteristic state of the working surface of the magnetic poles that was maintained due to the previous trigger. The magnetic characteristic state is permanent magnetic or magnetically neutral, thereby realizing the automatic suction and release function. This invention has a simple structure, safe suction force, and is convenient to repair and maintain, and can realize automatic material suction and release.

[0018] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0019] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is an isometric view of an active automatic lifting electro-permanent magnet of the present invention.

[0022] Figure 2 This is a front view of an active automatic lifting electro-permanent magnet according to the present invention;

[0023] Figure 3 This is a left view of an active automatic lifting electro-permanent magnet of the present invention.

[0024] In the diagram: 1-Electro-permanent magnet, 101-Cavity, 102-Electrical control unit, 103-Energy storage power supply, 104-Magnetic pole, 105-Status indicator light, 2-Triggering device, 3-Manual control panel, 301-Charging interface, 302-Switching interlock, 4-Lifting connection seat, 401-Oval through slot, 5-Connecting pin, 6-Pawl, 601-Contact. Detailed Implementation

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0027] See Figures 1 to 3 As shown, this invention provides an active automatic lifting electro-permanent magnet, including an electro-permanent magnet 1, a triggering device 2, a manual control panel 3, and a lifting connection component. The electro-permanent magnet 1 has a chamber 101 at its upper part, within which an electrical control unit 102 and an energy storage power supply 103 are installed. The energy storage power supply 103 stores energy through external charging and provides the necessary power to the electrical control unit 102 and the electro-permanent magnet 1. The triggering device 2 and the lifting connection component are located on top of the electro-permanent magnet 1. The lifting connection component includes a pantograph 6, the bow of which is used to connect to the lifting mechanism of an external lifting device. The two ends of the pantograph 6 are connected to the electro-permanent magnet 1 and are designed for contact. The triggering device 2 provides an external triggering mechanism; the triggering device 2 receives the external triggering mechanism and sends a triggering signal to the electrical control unit 102; the electrical control unit 102 receives the triggering signal sent by the triggering device 2, detects the magnetic characteristic state of the electro-permanent magnet 1, and generates a magnetic control current on the electro-permanent magnet 1 according to the received triggering signal, changing the magnetic characteristic state of the electro-permanent magnet 1 to a lifting state or a releasing state; the bottom working surface of the electro-permanent magnet 1 is provided with magnetic poles 104. In the lifting state, the working surface of the magnetic poles 104 has permanent magnetic characteristics, and other surfaces are magnetically neutral; in the releasing state, the working surface of the magnetic poles 104 and other surfaces are magnetically neutral.

[0028] See Figures 1 to 3As shown, in an embodiment of the present invention, the lifting connection component includes a lifting connection seat 4, a connecting pin 5, and a pantograph 6. The lifting connection seat 4 is fixed to the top of the electro-permanent magnet 1. The two open ends of the pantograph 6 are floatingly connected to the lifting connection seat 4 through the connecting pin 5, which is more stable than the single-point connection of the prior art. The lifting connection seat 4 is provided with a vertical movement space for the connecting pin 5, which satisfies the full triggering and full disengagement of the triggering device 2.

[0029] In an embodiment of the present invention, the lifting connection seat 4 includes two parallel and spaced-apart bearing plates, the gap between the two bearing plates allowing the pantograph 6 to slide flexibly therebetween; both ends of the two bearing plates are provided with coaxial oblong through slots 401, see [reference]. Figure 2 As shown. Both open ends of the boom 6 are provided with through holes for the connecting pin 5 to pass through. The inner diameter of the through holes is suitable for the outer diameter of the connecting pin 5, and the spacing between the through holes is suitable for the spacing between the two oblong through slots 401 of the lifting connecting seat 4. The axis of the oblong through slot 401 is consistent with the axis of the through holes provided at the two open ends of the boom 6. After the connecting pin 5 passes through the through holes at the ends of the boom 6, both ends of the connecting pin 5 are respectively accommodated in the corresponding oblong through slots 401 of the two bearing plates, and can move up and down within the oblong through slots 401. The relative position of the connecting pin 5 and the boom 6 is fixed.

[0030] Further, see Figure 3 As shown, a contact 601 is provided at one open end of the pantograph 6, and the triggering device 2 is located directly below the contact 601. When the working surface of the magnetic pole 104 contacts the magnetically loaded object, the lifting mechanism of the lifting equipment causes the connecting pin 5 to slide upward along the waist-shaped through-slot 401, and the contact 601 leaves the triggering device 2, thus releasing the triggering device 2. When the lifting mechanism of the lifting equipment descends and releases, the pantograph 6 is driven by its own weight to slide downward along the waist-shaped through-slot 401, and the contact 601 approaches and presses against the triggering device 2, thus triggering the triggering device 2.

[0031] Furthermore, each triggering of the triggering device 2 excites the electrical control unit 102 to output an excitation magnetomotive force to the electro-permanent magnet 1, changing the magnetic characteristic state of the working surface of the magnetic pole 104 that was maintained by the previous trigger. The magnetic characteristic state is either permanent magnetic or magnetically neutral, and the trigger holding time ensures that the magnetic characteristic state is fully changed.

[0032] Specifically, the triggering mode of the triggering device 2 is proximity photoelectric triggering, contact pressure contact triggering, magnetic switch or proximity switch;

[0033] Alternatively, the triggering device 2 can be a pin sensor consisting of a gravity sensor installed in the connecting pin 5, which triggers the function by sensing changes in gravity. Alternatively, the triggering device 2 can be a proximity photoelectric switch, magnetic switch, or limit switch installed at the bottom of the connecting pin 5 to implement a single-point triggering function. Single-point triggering is achieved through an arched bottom trigger; the boom 6 adopts an arched structure, allowing the hook to be directly inserted for lifting, avoiding the tipping problem associated with chains or booms used in other methods.

[0034] See Figure 3 As shown, in an embodiment of the present invention, the manual control panel 3 includes a charging interface 301, a switching interlock 302, and a manual magnetization / demagnetization control switch. The charging interface 301 is used to connect an external power source to charge and store energy in the energy storage power supply 103. The switching interlock 302 switches between the automatic magnetization / demagnetization mode of the active automatic magnetization lifting electro-permanent magnet and the manual control mode in emergency situations. In the manual control mode, the lifting or releasing state of the electro-permanent magnet 1 is manually controlled by the manual magnetization / demagnetization control switch.

[0035] Specifically, when the interlock 302 is switched to the automatic suction and release mode, the function of the trigger device 2 is turned on, and the operation function of the manual magnetization and demagnetization control switch is turned off; when the interlock 302 is switched to the manual control mode, the function of the trigger device 2 is turned off, and the function of the manual magnetization and demagnetization control switch is turned on.

[0036] Furthermore, a status indicator 105 is provided on the top of the electro-permanent magnet 1. The status indicator 105 is a multi-color constantly lit indicator light. The multi-color constantly lit indicator light includes a green indicator light, a yellow indicator light, and a red indicator light. The green indicator light indicates that the working surface of the magnetic pole 104 is in a state of permanent magnetic characteristics, the yellow indicator light indicates that the working surface of the magnetic pole 104 is in a magnetically neutral state, and the red indicator light indicates a fault state.

[0037] The present invention provides an active automatic lifting electro-permanent magnet, the working principle of which is as follows:

[0038] The lifting connection seat 4 is fixed to the top of the electro-permanent magnet 1 and is integrated with the electro-permanent magnet 1. The two open ends of the pantograph 6 are connected to the lifting connection seat 4 through the connecting pin 5. A certain amount of space is provided on the lifting connection seat 4 for the connecting pin 5 to move up and down. The space is sufficient for the triggering device 2 to be fully triggered and fully disengaged.

[0039] When the working surface of the magnetic pole 104 contacts the magnetically loaded object, the connecting pin 5 slides upward along the waist-shaped through-hole 401 with the help of the lifting mechanism of the lifting equipment, and the contact 601 leaves the triggering device 2, thus releasing the triggering device 2; or, driven by the weight of the pantograph 6 after the lifting mechanism of the lifting equipment is lowered and released, the connecting pin 5 slides downward along the waist-shaped through-hole 401 with the help of the weight of the pantograph 6, and the contact 601 approaches and presses the triggering device 2, thus triggering the triggering device 2.

[0040] The triggering device 2 receives an external trigger signal and transmits it to the electrical control unit 102. The electrical control unit 102 detects the magnetic characteristic state of the electro-permanent magnet 1 and generates a magnetic control current to the electro-permanent magnet 1, changing the magnetic characteristic state of the electro-permanent magnet 1 so that the electro-permanent magnet 1 is in a lifting state or a releasing state. The bottom working surface of the electro-permanent magnet 1 is provided with magnetic poles 104. In the lifting state, the working surface of the magnetic poles 104 has permanent magnetic characteristics, and the other surfaces are magnetically neutral. In the releasing state, the working surface of the magnetic poles 104 and other surfaces are magnetically neutral.

[0041] This invention provides an active automatic lifting electro-permanent magnet with built-in power supply, requiring no external power source. Driven by the weight of the pantograph after the lifting or lowering of the lifting mechanism, it triggers a triggering device. Each triggering of the device excites the electrical control unit to output an excitation magnetomotive force to the electro-permanent magnet, changing the magnetic characteristic state of the working surface of the magnetic poles from the previous trigger. The magnetic characteristic state can be either permanent magnet or magnetically neutral, thus achieving automatic lifting and releasing. This invention features a simple structure, safe suction force, and convenient maintenance, enabling automatic material lifting and releasing.

[0042] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An active automatic lifting electropermanent magnet, characterized in that, The system includes an electro-permanent magnet (1), a triggering device (2), a manual control panel (3), and a lifting connection component. The electro-permanent magnet (1) has a chamber (101) on its upper part. The chamber (101) contains an electrical control unit (102) and an energy storage power supply (103). The energy storage power supply (103) stores energy through external charging and provides the necessary electrical energy to the electrical control unit (102) and the electro-permanent magnet (1). The triggering device (2) and the lifting connection component are both located on top of the electro-permanent magnet (1). The lifting connection component includes a boom (6), the bow of which is used to connect to external lifting equipment. Both ends of the boom (6) are connected to the electro-permanent magnet (1). An external triggering mechanism is provided for the triggering device (2); the triggering device (2) receives the external triggering mechanism and sends a triggering signal; the electrical control unit (102) receives the triggering signal sent by the triggering device (2), detects the magnetic characteristic state of the electro-permanent magnet (1), and generates a magnetic control current for the electro-permanent magnet (1) according to the received triggering signal, changing the magnetic characteristic state of the electro-permanent magnet (1) to the state of lifting or releasing; a magnetic pole (104) is provided on the bottom working surface of the electro-permanent magnet (1); in the lifting state, the working surface of the magnetic pole (104) has permanent magnetic characteristics; in the releasing state, the working surface of the magnetic pole (104) is magnetically neutral; The lifting connection component also includes a lifting connection seat (4) and a connecting pin (5), wherein the lifting connection seat (4) is fixed to the top of the electro-permanent magnet (1), and the two open ends of the pantograph (6) are floatingly connected to the lifting connection seat (4) through the connecting pin (5). The lifting connection seat (4) is provided with a vertical movement space for the connecting pin (5), and the movement space satisfies the full triggering and full disengagement of the triggering device (2). The lifting connection seat (4) includes two parallel spaced bearing plates, and the gap between the two bearing plates allows the pantograph (6) to slide flexibly between them; Both ends of the two bearing plates are provided with coaxial waist-shaped through slots (401), and both ends of the two openings of the hanging bow (6) are provided with through holes for the connecting pin (5) to pass through. The two ends of the connecting pin (5) are respectively housed in the corresponding waist-shaped through slots (401) of the two bearing plates, and can move up and down in the waist-shaped through slots (401). A contact (601) is provided at one open end of the pantograph (6), and the triggering device (2) is located directly below the contact (601). When the working surface of the magnetic pole (104) contacts the magnetically lifted object, the connecting pin (5) slides upward along the waist-shaped through hole (401) by means of the lifting equipment, and the contact (601) leaves the triggering device (2), thus releasing the triggering device (2). When the lifting equipment is lowered and released, the connecting pin (5) is driven by the weight of the pantograph (6) to slide down along the waist-shaped through hole (401), and the contact (601) approaches and presses the triggering device (2) to trigger the triggering device (2). Each triggering of the triggering device (2) excites the electrical control unit (102) to output excitation magnetomotive force to the electro-permanent magnet (1), changing the magnetic characteristic state of the working surface of the magnetic pole (104) that was maintained by the previous triggering, and the trigger holding time ensures that the magnetic characteristic state is fully changed; The manual control panel (3) includes a charging interface (301), a switching interlock (302), and a manual magnetization and demagnetization control switch. The charging interface (301) is used to connect an external power source to charge and store energy for the energy storage power source (103). The switching interlock (302) switches between the automatic magnetization and demagnetization mode of the active automatic magnetization and demagnetization lifting electro-permanent magnet and the manual control mode in emergency situations. In the manual control mode, the lifting state or release state of the electro-permanent magnet (1) is manually controlled by the manual magnetization and demagnetization control switch.

2. The active automatic lifting electro-permanent magnet according to claim 1, characterized in that, The triggering mode of the triggering device (2) is proximity photoelectric triggering, contact pressure contact triggering, magnetic switch or proximity switch.

3. The active automatic lifting electro-permanent magnet according to claim 1, characterized in that, The triggering device (2) is a shaft pin sensor composed of a gravity sensor installed in the connecting pin (5), which senses the change in gravity and implements the triggering function; or, a proximity photoelectric switch, magnetic control switch or limit switch is installed at the bottom of the connecting pin (5) to implement the single suspension point triggering function.

4. The active automatic lifting electro-permanent magnet according to claim 1, characterized in that, When the switching interlock (302) is switched to the automatic suction and release mode, the function of the trigger device (2) is turned on, and the operation function of the manual magnetization and demagnetization control switch is turned off; when the switching interlock (302) is switched to the manual control mode, the function of the trigger device (2) is turned off, and the function of the manual magnetization and demagnetization control switch is turned on.

5. The active automatic lifting electro-permanent magnet according to claim 1, characterized in that, The electro-permanent magnet (1) has a status indicator (105) on its top, which is a multi-color constant-on indicator light.

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