Active lifting electric permanent magnet capable of automatically attracting and releasing

Abstract

The invention relates to a lifting magnet, in particular to an active lifting electric permanent magnet capable of automatically attracting and releasing. Comprising an electro-permanent magnet, a trigger device, a manual control panel and a lifting connecting part, a containing chamber is arranged on the upper portion of the electro-permanent magnet, an electrical control unit and an energy storage power source are arranged in the containing chamber, and the energy storage power source provides needed electric energy for the electrical control unit and the electro-permanent magnet; the triggering device is arranged at the top of the electro-permanent magnet, the lifting connecting part comprises a hanging bow, the two ends of the hanging bow are connected with the top of the electro-permanent magnet, and external triggering implementation is provided for the triggering device; the triggering device receives external triggering implementation and sends out a triggering signal; the electrical control unit receives the trigger signal, detects the magnetic characteristic state of the electro-permanent magnet, generates magnetic control current to the electro-permanent magnet, and changes the magnetic characteristic state of the electro-permanent magnet to enable the electro-permanent magnet to be in a lifting or releasing state; and magnetic poles are arranged on the bottom working surfaces of the electro-permanent magnets. The suction device is simple in structure, safe in suction force, convenient to repair and maintain and capable of automatically sucking and releasing materials.

Description

Technical Field

[0001] The invention relates to a lifting magnet, in particular to an active automatic suction and release lifting electro-permanent magnet. Background Art

[0002] The lifting electromagnet is a special electromagnet that uses the object to be sucked as the armature. It uses the magnetic field generated by the coil after it is energized to adsorb the object to be sucked. It must be energized during the lifting process. At present, the common lifting electro-permanent magnets are manually controlled, or panel controlled or remotely controlled. The operation is cumbersome, the degree of automation is low, the work efficiency is low, and the production cost is high. Therefore, there is an urgent need for an active automatic suction and release lifting electro-permanent magnet to achieve automatic suction and release and improve work efficiency. Summary of the invention

[0003] In order to solve the above-mentioned problems, the purpose of the present invention is to provide an active automatic suction and release lifting electropermanent magnet to solve the problems of cumbersome operation, low degree of automation, low work efficiency and high production cost caused by manual control, panel control or remote control of existing lifting electropermanent magnets.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] The invention provides an active automatic lifting electropermanent magnet, comprising an electropermanent magnet, a trigger device, a manual control panel and a lifting connection component, wherein a chamber is arranged on the upper part of the electropermanent magnet, an electrical control unit and an energy storage power supply are arranged in the chamber, the energy storage power supply stores energy through external charging, and provides required electric energy for the electrical control unit and the electropermanent magnet; the trigger device and the lifting connection component are both arranged on the top of the electropermanent magnet, the lifting connection component comprises a bow, the bow portion of the bow is used to connect with an external lifting device, the two ends of the bow are connected with the electropermanent magnet, and provide an external trigger implementation for the trigger device; the trigger device receives the external trigger implementation and sends a trigger signal; the electrical control unit receives the trigger signal sent by the trigger device, detects the magnetic characteristic state of the electropermanent magnet, and generates a magnetic control current for the electropermanent magnet according to the received trigger signal, and changes the magnetic characteristic state of the electropermanent magnet to the electropermanent magnet in a lifting state or a release state; a magnetic pole is arranged on the bottom working surface of the electropermanent magnet; in the lifting state, the working surface of the magnetic pole presents permanent magnetic characteristics; in the release state, the working surface of the magnetic pole is magnetically neutral.

[0006] In one possible implementation, the lifting connection component also includes a lifting connection seat and a connecting pin, wherein the lifting connection seat is fixed to the top of the electropermanent magnet, and the two open ends of the lifting bow are floatingly connected to the lifting connection seat through the connecting pin, and an upper and lower movable space for the connecting pin is set in the lifting connection seat, and the movable space meets the requirements of sufficient triggering and sufficient separation of the trigger device.

[0007] In a possible implementation, the lifting connection seat includes two parallel and spaced bearing plates, and the gap between the two bearing plates enables the lifting bow to slide flexibly therebetween;

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

[0009] In a possible implementation, a contact is provided at an open end of the hoist bow, and the trigger device is located directly below the contact; when the working surface of the magnetic pole contacts the magnetic object to be lifted, the lifting mechanism of the lifting equipment is lifted to make the connecting pin slide upward along the waist-shaped through slot hole, and the contact leaves the trigger device, thereby releasing the trigger device;

[0010] When the lifting mechanism of the lifting equipment is lowered and released, the connecting pin is driven by the deadweight of the hoisting bow to slide downward along the waist-shaped through slot, and the contact approaches and presses the trigger device to trigger the trigger device.

[0011] In one possible implementation, each triggering of the trigger device stimulates the electrical control unit to output an excitation magnetomotive force to the electropermanent magnet, thereby changing the magnetic property state maintained by the working surface of the magnetic pole due to the last triggering, and the trigger holding time ensures that the magnetic property state is fully changed.

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

[0013] In one possible implementation, the trigger device is an axle pin sensor composed of a gravity sensor set in the connecting pin shaft, and the axle pin sensor senses the gravity change to implement the trigger function; or, a proximity photoelectric switch, a magnetic control switch or a travel switch is set at the bottom of the connecting pin shaft to implement the single hanging point trigger function.

[0014] In one possible implementation, the manual control panel includes a charging interface, a switching interlock, and a manual magnetization and demagnetization control switch, wherein the charging interface is used for an external power supply to charge and store energy in the energy storage power supply; the switching interlock implements the switching between the automatic suction and release mode of the active automatic suction and release lifting electro-permanent magnet and the manual control mode in an emergency situation; in the manual control mode, the lifting state or release state of the electro-permanent magnet is manually controlled by the manual magnetization and demagnetization control switch.

[0015] In one possible implementation, when the switching interlock is switched to the automatic suction and release mode, the function of the trigger device is turned on, and the operation function of the manual magnetization and demagnetization control switch is turned off; when the switching interlock is switched to the manual control mode, the function of the trigger device is turned off, and the function of the manual magnetization and demagnetization control switch is turned on.

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

[0017] The advantages and beneficial effects of the present invention are as follows: the present invention provides an active automatic suction and release lifting electropermanent magnet, which has its own power supply and does not require external power supply. The self-weight drive of the lifting bow after the lifting or lowering release of the lifting mechanism of the lifting equipment triggers the trigger device. Each triggering of the trigger device stimulates the electrical control unit to output an excitation magnetic motive force to the electropermanent magnet, changing the magnetic property state maintained by the working surface of the magnetic pole due to the last trigger, and the magnetic property state presents permanent magnetic properties or is magnetically neutral, thereby realizing the automatic suction and release function. The present invention has a simple structure, safe suction, and is easy to repair and maintain, and can realize automatic suction and release of materials.

[0018] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0019] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is an axonometric diagram of an active automatic lifting electro-permanent magnet of the present invention;

[0022] Figure 2 It is a front view of an active automatic suction and release lifting electropermanent magnet of the present invention;

[0023] Figure 3 The present invention is a left side view of an active automatic lifting electropermanent magnet.

[0024] In the figure: 1-electropermanent magnet, 101-chamber, 102-electrical control unit, 103-energy storage power supply, 104-magnetic pole, 105-status indicator light, 2-trigger device, 3-manual control panel, 301-charging interface, 302-switching interlock, 4-lifting connection seat, 401-waist-shaped through slot hole, 5-connecting pin shaft, 6-hanging bow, 601-contact. DETAILED DESCRIPTION

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0027] See also Figures 1 to 3 As shown, the present invention provides an active automatic suction and release lifting electropermanent magnet, comprising an electropermanent magnet 1, a trigger device 2, a manual control panel 3 and a lifting connection component, wherein a chamber 101 is arranged on the upper part of the electropermanent magnet 1, an electrical control unit 102 and an energy storage power supply 103 are arranged in the chamber 101, the energy storage power supply 103 is charged externally and stores energy, and provides the required electric energy for the electrical control unit 102 and the electropermanent magnet 1; the trigger device 2 and the lifting connection component are arranged on the top of the electropermanent magnet 1, the lifting connection component comprises a bow 6, the bow portion of the bow 6 is used to be connected to the lifting mechanism of the external lifting equipment, the opening ends of the bow 6 are connected to the electropermanent magnet 1, and the trigger device 2 and the lifting connection component are arranged on the top of the electropermanent magnet 1, the lifting connection component comprises a bow 6, the bow portion of the bow 6 is used to be connected to the lifting mechanism of the external lifting equipment, the opening ends of the bow 6 are connected to the electropermanent magnet 1, and the trigger device 2 and the lifting connection component are arranged on the upper part of ... trigger device 2 and the lifting connection component are arranged on the upper part of the electropermanent magnet 1, the trigger device 2 and the lifting connection component are arranged on the upper part of the electropermanent magnet 1, The trigger device 2 provides an external trigger implementation; the trigger device 2 receives the external trigger implementation and sends a trigger signal to the electrical control unit 102; the electrical control unit 102 receives the trigger signal sent by the trigger device 2, detects the magnetic property state of the electropermanent magnet 1, and generates a magnetic control current for the electropermanent magnet 1 according to the received trigger signal, and changes the magnetic property state of the electropermanent magnet 1 to the electropermanent magnet 1 in a lifting state or a release state; a magnetic pole 104 is set on the working surface of the bottom of the electropermanent magnet 1, and in the lifting state, the working surface of the magnetic pole 104 presents permanent magnetic characteristics, and other surfaces are magnetically neutral; in the release state, the working surface of the magnetic pole 104 and other surfaces are magnetically neutral.

[0028] See also Figures 1 to 3As shown, in the embodiment of the present invention, the lifting connection component includes a lifting connection seat 4, a connecting pin 5 and a hanging bow 6, wherein the lifting connection seat 4 is fixed to the top of the electropermanent magnet 1, and the two open ends of the hanging bow 6 are floatingly connected to the lifting connection seat 4 through the connecting pin 5, which is more stable than the single-point connection in the prior art. An upper and lower movable space for the connecting pin 5 is set in the lifting connection seat 4, and the movable space meets the requirements of sufficient triggering and sufficient separation of the trigger device 2.

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

[0030] Further, see Figure 3 As shown, a contact 601 is provided at an open end of the lifting bow 6, and the trigger device 2 is located directly below the contact 601; when the working surface of the magnetic pole 104 contacts the magnetic object to be lifted, the lifting mechanism of the lifting equipment is lifted to make the connecting pin shaft 5 slide upward along the waist-shaped through slot hole 401, and the contact 601 leaves the trigger device 2, thereby releasing the trigger of the trigger device 2; when the lifting mechanism of the lifting equipment is lowered and released, the connecting pin shaft 5 is driven by the dead weight of the lifting bow 6 to slide downward along the waist-shaped through slot hole 401, and the contact 601 approaches and presses the trigger device 2, thereby triggering the trigger device 2.

[0031] Furthermore, each trigger of the trigger device 2 excites the electrical control unit 102 to output an excitation magnetomotive force to the electropermanent magnet 1, thereby changing the magnetic property state maintained by the working surface of the magnetic pole 104 due to the last trigger, and the magnetic property state presents permanent magnetic properties or is magnetically neutral, and the trigger holding time ensures that the magnetic property state is fully changed.

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

[0033] Alternatively, the trigger device 2 is a pin sensor composed of a gravity sensor arranged in the connecting pin shaft 5, and the pin sensor senses the change in gravity to implement the trigger function. Alternatively, the trigger device 2 is a proximity photoelectric switch, a magnetic switch or a travel switch arranged at the bottom of the connecting pin shaft 5 to implement the single-hanging point trigger function. The single-hanging point trigger is achieved by triggering the bottom of the bow; the bow 6 adopts a bow-shaped structure, and the hook can be directly placed in the hoisting, avoiding the problem of a certain degree of tipping of the chain or sling used in other ways.

[0034] See also 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 and demagnetization control switch, wherein the charging interface 301 is used for an external power supply to charge and store energy for the energy storage power supply 103; the switching interlock 302 implements the switching between the automatic suction and release mode of the active automatic suction and release lifting electro-permanent magnet and the manual control mode in an emergency; 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.

[0035] Specifically, 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.

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

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

[0038] The lifting connection seat 4 is fixed to the top of the electropermanent magnet 1 and is connected to the electropermanent magnet 1 as a whole. The two open ends of the lifting bow 6 are connected to the lifting connection seat 4 through the connecting pin 5. A certain activity space is set on the lifting connection seat 4 for the connecting pin 5 to move up and down. The activity space satisfies the full triggering and full separation of the trigger device 2.

[0039] When the working surface of the magnetic pole 104 contacts the magnetic object to be lifted, with the help of the lifting mechanism of the lifting equipment, the connecting pin shaft 5 is guided to slide upward along the waist-shaped through slot hole 401 for a limited distance, and the contact 601 leaves the trigger device 2, thereby releasing the trigger device 2; or with the help of the self-weight drive of the lifting bow 6 after the lifting mechanism of the lifting equipment is lowered and released, the connecting pin shaft 5 is guided to slide downward along the waist-shaped through slot hole 401 for a limited distance, and the contact 601 approaches and presses the trigger device 2, thereby triggering the trigger device 2.

[0040] The trigger device 2 receives an external trigger signal and transmits the external trigger signal to the electrical control unit 102. The electrical control unit 102 detects the magnetic property state of the electropermanent magnet 1 and generates a magnetic control current for the electropermanent magnet 1 to change the magnetic property state of the electropermanent magnet 1 so that the electropermanent magnet 1 is in a lifting state or a release state. A magnetic pole 104 is arranged on the bottom working surface of the electropermanent magnet 1. The working surface of the magnetic pole 104 in the lifting state presents permanent magnetic properties, and the other surfaces are magnetically neutral. The working surface and other surfaces of the magnetic pole 104 in the release state are magnetically neutral.

[0041] The present invention provides an active automatic suction and release lifting electropermanent magnet, which has its own power supply and does not require external power supply. The self-weight drive of the lifting bow after the lifting or lowering release of the lifting mechanism of the lifting equipment triggers the trigger device. Each triggering of the trigger device stimulates the electrical control unit to output an excitation magnetic motive force to the electropermanent magnet, thereby changing the magnetic property state maintained by the working surface of the magnetic pole due to the last trigger, and the magnetic property state presents permanent magnetic properties or is magnetically neutral, thereby realizing the automatic suction and release function. The present invention has a simple structure, safe suction force, and is easy to repair and maintain, and can realize automatic suction and release of materials.

[0042] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An active automatic suction and release lifting electro-permanent magnet, characterized in that: The invention comprises an electropermanent magnet (1), a trigger device (2), a manual control panel (3) and a lifting connection component, wherein a chamber (101) is arranged on the upper part of the electropermanent magnet (1), an electrical control unit (102) and an energy storage power supply (103) are arranged in the chamber (101), the energy storage power supply (103) stores energy through external charging, and provides the electrical control unit (102) and the electropermanent magnet (1) with the required electric energy; the trigger device (2) and the lifting connection component are both arranged on the top of the electropermanent magnet (1), the lifting connection component comprises a bow (6), the bow portion of the bow (6) is used to be connected to an external lifting device, and both ends of the bow (6) are connected to the electropermanent magnet (1), and An external triggering implementation is provided for the triggering device (2); the triggering device (2) receives the external triggering implementation and sends a triggering signal; the electrical control unit (102) receives the triggering signal sent by the triggering device (2), detects the magnetic property state of the electropermanent magnet (1), and generates a magnetic control current for the electropermanent magnet (1) according to the received triggering signal, thereby changing the magnetic property state of the electropermanent magnet (1) to the state where the electropermanent magnet (1) is in a lifting state or a releasing state; a magnetic pole (104) is provided on the bottom working surface of the electropermanent magnet (1); in the lifting state, the working surface of the magnetic pole (104) exhibits permanent magnetic properties; in the releasing state, the working surface of the magnetic pole (104) exhibits magnetic neutrality.

2. The active automatic suction and release lifting electropermanent magnet according to claim 1, characterized in that: 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 electropermanent magnet (1), and the two open ends of the lifting bow (6) are floatingly connected to the lifting connection seat (4) through the connecting pin (5), and an upper and lower movable space of the connecting pin (5) is set in the lifting connection seat (4), and the movable space meets the requirements of sufficient triggering and sufficient separation of the trigger device (2).

3. The active automatic suction and release lifting electropermanent magnet according to claim 2, characterized in that: The lifting connection seat (4) comprises two parallel and spaced bearing plates, and the gap between the two bearing plates enables the lifting bow (6) to slide flexibly therebetween; Both ends of the two supporting plates are provided with coaxial waist-shaped through-slot holes (401), and both open ends of the hanging bow (6) are provided with through-holes for the connecting pin shaft (5) to pass through, and both ends of the connecting pin shaft (5) are respectively accommodated in the waist-shaped through-slot holes (401) corresponding to the two supporting plates, and can move up and down in the waist-shaped through-slot holes (401).

4. The active automatic suction and release lifting electropermanent magnet according to claim 3, characterized in that: A contact (601) is provided at an open end of the hoisting bow (6), and the trigger device (2) is located directly below the contact (601); when the working surface of the magnetic pole (104) contacts the magnetic object to be lifted, the connecting pin shaft (5) slides upward along the waist-shaped through slot hole (401) with the help of the lifting equipment, and the contact (601) leaves the trigger device (2), thereby releasing the trigger of the trigger device (2); When the lifting equipment is lowered and released, the connecting pin shaft (5) is driven by the deadweight of the hoisting bow (6) to slide downward along the waist-shaped through slot hole (401), and the contact (601) approaches and presses the trigger device (2), thereby triggering the trigger device (2).

5. The active automatic suction and release lifting electropermanent magnet according to claim 2, characterized in that: Each triggering of the trigger device (2) stimulates the electrical control unit (102) to output an excitation magnetomotive force to the electropermanent magnet (1), thereby changing the magnetic property state of the working surface of the magnetic pole (104) maintained due to the last triggering, and the triggering holding time ensures that the magnetic property state is fully changed.

6. The active automatic suction and release lifting electropermanent magnet according to claim 2, characterized in that: The triggering mode of the triggering device (2) is proximity photoelectric triggering, contact pressure contact triggering, magnetic sensitive switch or proximity switch.

7. The active automatic suction and release lifting electropermanent magnet according to claim 2, characterized in that: The trigger device (2) is a pin sensor composed of a gravity sensor arranged in the connecting pin shaft (5), and the pin sensor senses the gravity change to implement the trigger function; or, a proximity photoelectric switch, a magnetic control switch or a travel switch is arranged at the bottom of the connecting pin shaft (5) to implement the single suspension point trigger function.

8. The active automatic suction and release lifting electropermanent magnet according to claim 1, characterized in that: The manual control panel (3) comprises a charging interface (301), a switching interlock (302) and a manual magnetization and demagnetization control switch, wherein the charging interface (301) is used to connect to an external power source to charge and store energy in the energy storage power source (103); the switching interlock (302) implements switching between an automatic suction and release mode of actively sucking and releasing the lifting electro-permanent magnet and a manual control mode in an emergency; 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.

9. The active automatic suction and release lifting electropermanent magnet according to claim 8, 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.

10. The active automatic suction and release lifting electropermanent magnet according to claim 1, characterized in that: A status indicator (105) is arranged on the top of the electropermanent magnet (1), and the status indicator (105) is a multi-color constantly lit indicator light.

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