CN219577038U

CN219577038U - Magnetic electricity generation type limit switch and switching device

Info

Publication number: CN219577038U
Application number: CN202320164139.4U
Authority: CN
Inventors: 陈广; 刘圣地
Original assignee: Baoxin Software Wuhan Co ltd
Current assignee: Baoxin Software Wuhan Co ltd
Priority date: 2023-01-17
Filing date: 2023-01-17
Publication date: 2023-08-22
Anticipated expiration: 2033-01-17

Abstract

The utility model provides a magneto-electric limit switch and a switch device, wherein a driving component drives a magnetic component to move, so that the magnetic component and the switch component are subjected to electromagnetic cutting to generate induced electromotive force, and when the voltage generated by the switch component reaches a threshold voltage, a Schmitt trigger is used for shaping a voltage waveform with slowly changed edges into a rectangular pulse with steep edges. Thereby achieving the technical effects of protecting the production line equipment in the metallurgical industry and prolonging the service life of the equipment. Can be widely applied to the technical field of limit switches.

Description

Magnetic electricity generation type limit switch and switching device

Technical Field

The utility model belongs to the technical field of limit switches, and particularly relates to a magnetically-generated electricity type limit switch and a switch device.

Background

Typically, in the operation of metallurgical industry production line equipment, field operating conditions are complex, such as high temperature, humidity. The conventional limit switch consists of an inductive switch, a high-frequency oscillator, a shaping amplifier and the like. When the limit switch is in a moist environment, the internal high-frequency oscillator and the shaping amplifier part are easy to enter water, so that the circuit board works abnormally, and the output signal is abnormal. Can cause potential safety hazard of production equipment units. It can be seen that how to accurately transmit the limit switch signal to the outside when the metallurgical industry production line equipment is running is a technical problem that needs to be solved by those skilled in the art.

Disclosure of Invention

The utility model provides a magneto-electricity-generation type limit switch, which at least solves the technical problems;

in order to solve the above-described problems, a first aspect of the present utility model provides a magnetically generated electricity limit switch including: a magnetic assembly; a switch assembly coupled to the magnetic assembly; the magnetic assembly is driven to rotate through the driving assembly; the switch assembly comprises a closed coil and a Schmitt trigger, the closed coil is connected with the magnetic assembly, the closed coil is electrically connected with a PLC system, and the Schmitt trigger is used for receiving a signal of voltage generated by the closed coil and transmitting the voltage signal to a controller of the PLC system.

In a first aspect, the magnetic assembly is a U-shaped magnet.

In a first aspect, the drive assembly is a coil car.

In a first aspect, the driving component is an oil cylinder, and an output end of the oil cylinder is provided with the magnetic component.

In a first aspect, the U-shaped magnet is a permanent magnet.

In a first aspect, the switch assembly comprises a copper bar.

In a first aspect, the magnetic assembly is connected to the switch assembly to generate an induced electromotive force of: e=blv; wherein E is induced electromotive force, B is magnetic flux size, L is copper bar length for cutting magnetic induction lines, and V is U-shaped magnet movement speed.

In a second aspect, the utility model provides a switching device comprising a magnetically active limit switch as described in any one of the preceding claims.

The beneficial effects are that: the utility model provides a magneto-electricity-generation type limit switch, which is characterized in that a driving component drives a magnetic component to move, so that the magnetic component and a switch component are subjected to electromagnetic cutting to generate induced electromotive force, and when the switch component generates voltage, a voltage signal is transmitted to a PLC (programmable logic controller) for use. Thereby achieving the technical effects of protecting the production line equipment in the metallurgical industry and prolonging the service life of the equipment.

Drawings

In order to more clearly illustrate the embodiments of the present description or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a magneto-electric limit switch according to an embodiment of the utility model;

FIG. 2 is a schematic diagram showing a time-varying voltage state according to an embodiment of the present utility model;

reference numerals in the drawings:

1. a magnetic assembly;

2. a switch assembly;

Detailed Description

The following description of the embodiments of the present utility model will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the utility model, fall within the scope of protection of the utility model.

Meanwhile, in the embodiment of the present specification, when an element is referred to as being "fixed to" another element, it may be directly on the other element or may be present with an intervening element. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical", "horizontal", "left", "right" and the like are used in the embodiments of the present specification for the purpose of illustration only and are not intended to limit the present utility model.

Embodiment one:

as shown in fig. 1-2, a first aspect provides a magnetically generated electrical limit switch, the limit switch comprising: a magnetic assembly; a switch assembly coupled to the magnetic assembly;

wherein, the magnetic component is driven to rotate by the driving component; the switch assembly comprises a closed coil and a Schmitt trigger, the closed coil is connected with the magnetic assembly, the closed coil is electrically connected with a PLC system, and the Schmitt trigger is used for receiving a signal of voltage generated by the closed coil and transmitting the voltage signal to the PLC controller for use.

Specifically, the magnetic assembly is driven to move through the driving assembly, so that the magnetic assembly and the switch assembly are subjected to electromagnetic cutting, induced electromotive force is generated, and when the switch assembly generates voltage, the voltage signal is transmitted to the PLC controller for use. Thereby achieving the technical effects of protecting the production line equipment in the metallurgical industry and prolonging the service life of the equipment.

In some possible embodiments, the magnetic assembly is a U-shaped magnet, and the magnetic pole is changed by the continuous rotation of the U-shaped magnet to generate an induced electromotive force with the coil in the first embodiment; the U-shaped magnet is widely used and has a stable structure, and the magnetic assembly of the first embodiment preferably adopts the U-shaped magnet.

In some possible embodiments, the drive assembly is a coil car.

The U-shaped magnetic assembly can be driven to displace relative to the coil through the coil conveying trolley.

In some possible embodiments, the driving component is a cylinder, and an output end of the cylinder is provided with the magnetic component.

Therefore, the U-shaped magnetic assembly can be driven to reciprocate relative to the coil through the expansion and contraction of the oil cylinder, and induced electromotive force is generated through secondary cutting.

In some possible embodiments, the U-shaped magnet is a permanent magnet.

Thus, the stability of the magnetic induction electromotive force can be ensured.

In some possible embodiments, the switch assembly comprises a copper bar.

In some possible embodiments, the induced electromotive force generated by the connection of the magnetic assembly and the switch assembly is: e=blv; wherein E is induced electromotive force, B is magnetic flux size, L is copper bar length for cutting magnetic induction lines, and V is U-shaped magnet movement speed.

Referring to fig. 2, the upper half is a state diagram of voltage change with time in the prior art, and the lower half is a state diagram of voltage change with time in an embodiment of the present utility model, it can be known that the state of voltage change with time is a stable state through the cooperation of the magnetic component and the switch component in the first embodiment.

Example two

The second embodiment provides a switching device, where the switching device includes any one of the above-mentioned magneto-electric limit switches, and the magnetic assembly is driven to move by the switch driving assembly, so that the magnetic assembly and the switch assembly generate electromagnetic cutting to generate induced electromotive force, and when the switch assembly generates voltage, the voltage is shaped into a rectangular pulse with steep edges by the schmitt trigger. Thereby achieving the technical effects of protecting the production line equipment in the metallurgical industry and prolonging the service life of the equipment.

Since the second embodiment and the first embodiment are an embodiment under the same inventive concept, the partial structures thereof are completely the same, and therefore, the structure substantially the same as that of the first embodiment in the second embodiment is not described in detail, and the detailed description thereof is omitted herein.

Finally, it should be noted that: the above examples are only specific embodiments of the present utility model, and are not intended to limit the scope of the present utility model, but it should be understood by those skilled in the art that the present utility model is not limited thereto, and that the present utility model is described in detail with reference to the above examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit of the corresponding technical solutions. Are intended to be encompassed within the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the utility model would be readily apparent to those skilled in the art, and accordingly, the utility model is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.

Claims

1. A magnetically-generated electrical limit switch, the limit switch comprising:

a magnetic assembly;

a switch assembly coupled to the magnetic assembly; the magnetic assembly is driven to rotate through the driving assembly; the switch assembly comprises a closed coil and a Schmitt trigger, the closed coil is connected with the magnetic assembly, the closed coil is electrically connected with a PLC system, and the Schmitt trigger is used for receiving a signal of voltage generated by the closed coil and transmitting the voltage signal to a controller of the PLC system.

2. The magnetically active limit switch of claim 1, wherein:

the magnetic component is a U-shaped magnet.

3. The magnetically active limit switch of claim 1, wherein:

the driving assembly is a coil transporting trolley.

4. The magnetically active limit switch of claim 1, wherein:

the driving component is an oil cylinder, and the output end of the oil cylinder is provided with the magnetic component.

5. The magnetically-generated limit switch of claim 2, wherein:

the U-shaped magnet is a permanent magnet.

6. The magnetically active limit switch of claim 1, wherein:

the switch assembly includes a copper bar.

7. The magnetically-generated limit switch of claim 2, wherein:

the magnetic assembly is connected with the switch assembly to generate induced electromotive force which is as follows: e=blv;

wherein E is induced electromotive force, B is magnetic flux size, L is copper bar length for cutting magnetic induction lines, and V is U-shaped magnet movement speed.

8. A switching device, characterized by:

the switching device comprising a magnetically active limit switch according to any one of the preceding claims 1-7.