阅读说明：本技术 一种电永磁吸盘短路保护装置 (Short-circuit protection device for electric permanent magnetic chuck ) 是由 陈翔 于 2019-10-18 设计创作，主要内容包括：本发明公开了一种电永磁吸盘短路保护装置,具体涉及电永磁吸盘领域,包括底座,底座的顶面安装有外壳,外壳的两侧分别安装有左极板、右极板,外壳的两侧开设有气孔,外壳的内部安装有控制部,左极板、右极板的中间安装有金属导杆,金属导杆的顶面安装有执行部,控制部的内部安装有超级电容、电源、DC-DC电源模块、固体开关、短路甄别电路。本发明通过实用火药爆燃的方式炸断左右极板之间连通的金属导杆,能够在极短的时间内彻底的切断外部高压电流设备的连接,防止巨大的短路电流对电永磁吸盘控制器以及该短路保护装置造成永久性损坏,反应灵敏,短路保护控制部与电永磁吸盘电路独立,不易损坏能够实时进行快速响应。(The invention discloses a short-circuit protection device for an electric permanent magnetic chuck, and particularly relates to the field of electric permanent magnetic chucks. The invention can break the metal guide rod communicated between the left and right polar plates by explosion in a practical gunpowder explosion mode, can thoroughly cut off the connection of external high-voltage current equipment in a very short time, prevents huge short-circuit current from causing permanent damage to the electro-permanent magnetic chuck controller and the short-circuit protection device, has sensitive reaction, is independent from the electro-permanent magnetic chuck circuit, is not easy to damage, and can carry out real-time quick response.)

1. The utility model provides an electricity permanent magnetism sucking disc short-circuit protection device, includes base (1), its characterized in that: the utility model discloses a high-voltage Direct Current (DC) -DC power supply, including base (1), shell (2) and shell (2), the both sides of shell (2) are fixed mounting respectively has left polar plate (3), right polar plate (9), gas pocket (4) are seted up to the both sides of shell (2), the inside fixed mounting of shell (2) has control part (8), the centre fixed mounting of left side polar plate (3), right polar plate (9) has metal guide arm (5), the surface of metal guide arm (5) has cup jointed magnetic ring cover (6), the top surface fixed mounting of metal guide arm (5) has execution part (7), the inside fixed mounting of control part (8) has super capacitor (10), power (11), DC-DC power module (12), solid switch (16), short circuit of discriminating (17), the both ends of super capacitor (10), power (11) are parallelly connected and have with left polar plate (3) respectively, The direct current power supply comprises a right pole plate (9), the other end of the right pole plate (9) is electrically connected with the end of a solid switch (16), the other end of the solid switch (16) is electrically connected with a short circuit discrimination circuit (17), the short circuit discrimination circuit (17) is composed of a magnetic ring sleeve (6) and a Hall current sensor, the end of the Hall current sensor is provided with a Hall current sensor induction end (18), one end of the left pole plate (3) is electrically connected with an energy storage capacitor (13), the other end of the energy storage capacitor (13) is electrically connected with a diode (15) and is electrically connected with the output end of a DC-DC power supply module (12), and the other end of the diode (15) is electrically connected with a resistor (14);

the execution part (7) comprises an explosion-proof impact shell (701), an oriented shell (702), gunpowder (703) and a detonator (704), wherein the oriented shell (702) is positioned inside the explosion-proof impact shell (701), the oriented shell (702), the explosion-proof impact shell (701) and a metal guide rod (5) form a closed cavity, the gunpowder (703) is filled in the closed cavity, the detonator (704) is positioned inside the gunpowder (703), and a lead is electrically connected to the tail end of the detonator (704) and penetrates out of the explosion-proof impact shell (701).

2. The electro permanent magnetic chuck short circuit protection device of claim 1, wherein: the base (1) and the shell (2) are insulating material components, and the base (1) and the shell (2) are made of flame-retardant materials.

3. The electro permanent magnetic chuck short circuit protection device of claim 1, wherein: v-shaped grooves are formed in the bottom surfaces of the two ends of the metal guide rod (5) and the contact surface of the execution part (7).

4. The electro permanent magnetic chuck short circuit protection device of claim 1, wherein: two ends of the detonator (704) are respectively and electrically connected with the output end of the DC-DC power supply module (12) at one end of the solid switch (16), and two ends of the metal guide rod (5) are respectively and electrically connected with the end part of the diode (15) and the end part of the resistor (14).

5. The electro permanent magnetic chuck short circuit protection device of claim 1, wherein: the switching element of the solid-state switch (16) can use a high-speed low-resistance semiconductor switching device such as a high-power MOSFET, an IGBT and the like.

6. The electro permanent magnetic chuck short circuit protection device of claim 1, wherein: the left pole plate (3) and the right pole plate (9) are electrically connected through an energy storage capacitor (13), a diode (15), a resistor (14), a metal guide rod (5) and a short circuit discrimination circuit (17) in sequence, and the power supply (11) is composed of a lithium battery pack.

7. The electro permanent magnetic chuck short circuit protection device of claim 1, wherein: the explosion-proof impact shell (701) is made of Kevlar composite materials, and the directional shell (702) is in an outward-expanding shape and is downward in direction.

Technical Field

The invention relates to the technical field of electric permanent magnetic chucks, in particular to a short-circuit protection device of an electric permanent magnetic chuck.

Background

The principle of the electric permanent magnetic chuck controller is that after alternating voltage 220V is reduced by a transformer, the alternating voltage is rectified by a rectifier to become direct current, the direct current enters a chuck through a control device, the chuck is magnetized at the moment, a reverse voltage circuit is introduced during demagnetization, the controller achieves the demagnetization function, the working current of the electromagnetic chuck is very large, once a short circuit condition occurs, the whole electric permanent magnetic chuck machine and the controller thereof are burnt, and at present, air circuit breakers with large amperes are mostly adopted in the market.

However, when the air circuit breaker is actually used, some defects still exist, for example, the air circuit breaker can be started to form open circuit under the fault states of load short circuit, load overcurrent, low voltage and the like, when the electric permanent magnet sucker works, once the sucker is powered off due to load overcurrent, low voltage and other reasons, the object at the bottom of the sucker falls down, workers can be seriously injured, the personal safety of the operators is threatened, in addition, the working current of the electric permanent magnet sucker is extremely high, once the short circuit occurs, the current of the sucker can break through the internal components of the air circuit breaker instantly, and the air circuit breaker fails, and can not respond quickly or the cut-off is incomplete.

Therefore, there is a need for a short circuit protection device for an electro-permanent magnetic chuck that is fast in response and cuts off current thoroughly.

Disclosure of Invention

In order to overcome the above defects in the prior art, the embodiment of the invention provides an electric permanent magnetic chuck short-circuit protection device, which can break a metal guide rod communicated between a left polar plate and a right polar plate in a practical explosive detonation mode, can thoroughly cut off the connection of external high-voltage current equipment in a very short time, prevents huge short-circuit current from causing permanent damage to an electric permanent magnetic chuck controller and the short-circuit protection device, is sensitive in reaction, is independent from an electric permanent magnetic chuck circuit, is not easy to damage, and can quickly respond in real time; in addition, the short-circuit discrimination circuit formed by the magnetic ring sleeve and the Hall current sensor is used for monitoring the circuit condition of the electric permanent magnetic chuck controller in real time, so that the circuit breaking phenomenon of the air circuit breaker in fault states of load overcurrent, low voltage and the like is thoroughly avoided, the phenomenon that an object falls off when the electric permanent magnetic chuck lifts the object and the worker is injured due to the falling of the object caused by frequent power failure of the electric permanent magnetic chuck is prevented, and the short-circuit protection device is safe and reliable, is convenient to popularize and solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: an electric permanent magnetic chuck short-circuit protection device comprises a base, wherein a shell is fixedly arranged on the top surface of the base, a left polar plate and a right polar plate are respectively and fixedly arranged on two sides of the shell, air holes are formed in two sides of the shell, a control part is fixedly arranged in the shell, a metal guide rod is fixedly arranged in the middle of the left polar plate and the right polar plate, a magnetic ring sleeve is sleeved on the surface of the metal guide rod, an execution part is fixedly arranged on the top surface of the metal guide rod, a super capacitor, a power supply, a DC-DC power supply module, a solid switch and a short-circuit discrimination circuit are fixedly arranged in the control part, two ends of the super capacitor and the power supply are connected in parallel and are respectively and electrically connected with the left polar plate and the right polar plate, the other end of the right polar plate is electrically connected with the end part of the solid switch, the short circuit discrimination circuit is composed of a magnetic ring sleeve and a Hall current sensor, the end part of the Hall current sensor is provided with a Hall current sensor induction end, one end of the left polar plate is electrically connected with an energy storage capacitor, the other end of the energy storage capacitor is electrically connected with a diode and is electrically connected with the output end of the DC-DC power supply module, and the other end of the diode is electrically connected with a resistor;

the execution part comprises an explosion-proof impact shell, an oriented shell, gunpowder and a detonator, wherein the oriented shell is positioned inside the explosion-proof impact shell, the oriented shell, the explosion-proof impact shell and a metal guide rod form a closed cavity, the gunpowder is filled in the closed cavity, the detonator is positioned inside the gunpowder, and the tail end of the detonator is electrically connected with a lead which penetrates out of the explosion-proof impact shell.

In a preferred embodiment, the base and the housing are made of insulating materials, and the base and the housing are made of flame-retardant materials.

In a preferred embodiment, the contact surfaces of the bottom surfaces of the two ends of the metal guide rod and the execution part are provided with V-shaped grooves.

In a preferred embodiment, two ends of the detonator are electrically connected with an output end of a DC-DC power supply module at one end of the solid switch respectively, and two ends of the metal guide rod are electrically connected with an end of the diode and an end of the resistor respectively.

In a preferred embodiment, the switching element of the solid-state switch can use a high-speed, low-resistance semiconductor switching device such as a high-power MOSFET, an IGBT or the like.

In a preferred embodiment, the left electrode plate and the right electrode plate are electrically connected through an energy storage capacitor, a diode, a resistor, a metal guide rod and a short circuit screening circuit in sequence, and the power supply is composed of a lithium battery pack.

In a preferred embodiment, the explosion-proof impact shell is made of Kevlar composite material, and the orientation shell is flared and is downward.

The invention has the technical effects and advantages that:

1. according to the invention, the metal guide rod communicated between the left and right polar plates is burst off in a practical gunpowder deflagration mode, so that the connection of external high-voltage current equipment can be thoroughly cut off in a very short time, permanent damage to the electro-permanent magnetic chuck controller and the short-circuit protection device caused by huge short-circuit current is prevented, the reaction is sensitive, the short-circuit protection control part is independent from the electro-permanent magnetic chuck circuit, and the short-circuit protection control part can not be damaged easily and can perform real-time quick response;

2. the short-circuit discrimination circuit formed by the magnetic ring sleeve and the Hall current sensor is used for monitoring the circuit condition of the electric permanent magnetic chuck controller in real time, so that the circuit breaking phenomenon of the air circuit breaker in fault states of load overcurrent, low voltage and the like is thoroughly avoided, the phenomenon that an object falls off when the electric permanent magnetic chuck lifts the object due to frequent power failure of the electric permanent magnetic chuck is prevented, workers are injured due to smashing, and the short-circuit protection device is safe and reliable and is convenient to popularize.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic top view of the present invention.

FIG. 3 is a schematic diagram of an execution unit according to the present invention.

Fig. 4 is a schematic diagram of a control structure of the present invention.

FIG. 5 is a schematic diagram of a control circuit structure according to the present invention

The reference signs are: 1. a base; 2. a housing; 3. a left polar plate; 4. air holes; 5. a metal guide rod; 6. a magnetic ring sleeve; 7. an execution unit; 8. a control unit; 9. a right pole plate; 10. a super capacitor; 11. a power source; 12. a DC-DC power supply module; 13. an energy storage capacitor; 14. a resistance; 15. a diode; 16. a solid state switch; 17. a short circuit discrimination circuit; 18. a Hall current sensor sensing end; 701. explosion-proof shell punching; 702. an orientation housing; 703. gunpowder; 704. and (4) a detonator.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The short-circuit protection device of the electric permanent magnetic chuck as shown in the attached fig. 1-4 comprises a base 1, a shell 2 is fixedly installed on the top surface of the base 1, a left polar plate 3 and a right polar plate 9 are respectively and fixedly installed on two sides of the shell 2, air holes 4 are opened on two sides of the shell 2, a control part 8 is fixedly installed inside the shell 2, a metal guide rod 5 is fixedly installed between the left polar plate 3 and the right polar plate 9, a magnetic ring sleeve 6 is sleeved on the surface of the metal guide rod 5, an execution part 7 is fixedly installed on the top surface of the metal guide rod 5, a super capacitor 10, a power supply 11, a DC-DC power supply module 12, a solid switch 16 and a short-circuit discrimination circuit 17 are fixedly installed inside the control part 8, two ends of the super capacitor 10 and the power supply 11 are connected in parallel and are respectively and electrically connected with the left polar plate 3 and the right polar plate 9, the other end of the right polar plate 9 is electrically, the short circuit discrimination circuit 17 is composed of a magnetic ring sleeve 6 and a Hall current sensor, a Hall current sensor induction end 18 is arranged at the end part of the Hall current sensor, one end of the left polar plate 3 is electrically connected with an energy storage capacitor 13, the other end of the energy storage capacitor 13 is electrically connected with a diode 15 and is electrically connected with the output end of the DC-DC power supply module 12, and the other end of the diode 15 is electrically connected with a resistor 14;

the execution part 7 comprises an explosion-proof impact shell 701, an orientation shell 702, gunpowder 703 and a detonator 704, wherein the orientation shell 702 is positioned inside the explosion-proof impact shell 701, the orientation shell 702, the explosion-proof impact shell 701 and the metal guide rod 5 form a closed cavity, the gunpowder 703 is filled in the closed cavity, the detonator 704 is positioned inside the gunpowder 703, and the tail end of the detonator 704 is electrically connected with a lead which penetrates out of the explosion-proof impact shell 701.

The implementation mode is specifically as follows: the metal guide rod 5 communicated between the left polar plate and the right polar plate is exploded through the explosion of the practical gunpowder 703, the connection of external high-voltage current equipment can be thoroughly cut off in a very short time, permanent damage to the electric permanent magnet chuck controller and the short-circuit protection device caused by huge short-circuit current is prevented, the reaction is sensitive, the short-circuit protection control part is independent from the electric permanent magnet chuck circuit, and the short-circuit protection control part can not be damaged and can quickly respond in real time; in addition, the short-circuit discrimination circuit 17 formed by the magnetic ring sleeve 6 and the Hall current sensor is used for monitoring the circuit condition of the electric permanent magnetic chuck controller in real time, so that the circuit breaking phenomenon of the air circuit breaker under fault states of load overcurrent, low voltage and the like is thoroughly avoided, the phenomenon that the electric permanent magnetic chuck drops when the chuck lifts objects due to frequent power failure is prevented, workers are prevented from being injured, and the short-circuit protection device is safe and reliable and is convenient to popularize.

Wherein, base 1, shell 2 are insulating material component, and base 1, shell 2 constitute for fire-retardant material, prevent that gunpowder detonation from arousing base 1, shell 2 burning.

Wherein, the contact surface of the bottom surface of the two ends of the metal guide rod 5 and the execution part 7 is provided with V-shaped grooves, so that the metal guide rod 5 can be rapidly broken.

Two ends of the detonator 704 are electrically connected with the output end of the DC-DC power module 12 at one end of the solid switch 16, and two ends of the metal guide rod 5 are electrically connected with the end of the diode 15 and the end of the resistor 14, respectively, so as to implement an execution path.

The solid switch 16 may use high-speed and low-resistance semiconductor switching devices such as high-power MOSFETs and IGBTs, and the use of low-resistance semiconductor switching devices such as high-power MOSFETs and IGBTs can greatly shorten the response time.

Wherein, the left polar plate 3, the right polar plate 9 pass through energy storage capacitor 13, diode 15, resistance 14, metal guide rod 5, short circuit screening circuit 17 in proper order and carry out electric connection, and power 11 comprises lithium cell group, and the electric current in the energy storage capacitor 13 can make metal guide rod 5 generate heat in the twinkling of an eye and ignite gunpowder 703 when the corresponding circuit of detonator 704 is invalid.

The explosion-proof impact shell 701 is made of Kevlar composite materials, and the directional shell 702 is in an outward expanding shape and is downward in direction, so that detonation thrust of the powder 703 is concentrated on the surface of the metal guide rod 5.

The working principle of the invention is as follows:

when a circuit of the electric permanent magnetic chuck controller is short-circuited or damaged, the short circuit discrimination circuit 17 sends out an initiation signal to trigger the solid switch 16 to immediately apply a large current to the detonator 704, the high-voltage power supply large current is adopted to excite the instantaneous electric detonator 704 and rapidly ignite the initiation gunpowder 703, the gunpowder 703 explodes and breaks the metal guide rod 5 in a very short time, the metal guide rod 5 is cut off at the position of the middle V-shaped groove and is bent towards the downward bottom surface V-shaped groove, and finally the metal guide rod is bent downwards at two sides of the notch to form a large breaking distance, so that electric arcs cannot be maintained, the circuit is rapidly broken, the outer explosion-proof punch shell 701 prevents the gunpowder 703 from generating high temperature to ignite peripheral objects and protects the electric permanent magnetic chuck controller from serious damage, discharged gas waves are led out through the air holes 4, and the second protective measure shell 2 is prevented.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.