A kind of plow coal ware anti-shaking control circuit based on normally closed position limiting and plow coal ware

Abstract

The application relates to a kind of plough coal ware anti-shaking control circuit based on normally closed limit and plough coal, and the anti-shaking control circuit includes plough coal ware motor, at least two normally closed limiters and at least two AC contactors, the plough coal ware motor is connected with any the AC contact, the normally closed contact of each the AC contactor is connected with the normally open contact of other the AC contactors in parallel, and is connected with any normally closed limiter, the normally closed limiter is used to sense the position of plough coal ware plough head.Compared with prior art, the application can keep the stability of output signal, solve the problem of abnormal control and operation caused by coal conveying system vibration.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal conveying systems, in particular to a plow coal device anti-shaking control circuit based on a normally closed limit position and a plow coal device. BACKGROUND

[0002] The plow coal device is a device used for coal mining in coal conveying systems, usually composed of a group of alternately arranged plates distributed throughout the height of the coal body. These plates cut and break the coal when pushed into the coal body. This mechanized coal mining method can reduce the risk and labor intensity of manual coal mining, while improving production efficiency.

[0003] In the automatic operation of the plow coal device, the plow head's lifting and lowering or left and right positions are determined by the plow coal device limit position, thereby ensuring normal production of the coal mine. These limit positions are usually composed of magnetic, photoelectric or mechanical position sensors. They can measure the change in the position of the plow head, feed back to the computer control system, and change the position of the plow head according to the control command to achieve automatic control and coordinate production. The accuracy and stability of the plow coal device limit position are crucial to the safety and efficiency of coal production. However, the coal conveying system often experiences severe vibration, which often causes the plow coal device limit position to shake. This shaking phenomenon can cause the limit position signal to be unstable, affecting the normal control and operation of the system. Therefore, it is very important to solve the problem of plow coal device limit position shaking.

[0004] In the prior art, for the normally open limit position, a self-holding circuit is added to the input end of the normally open limit position. When the device reaches the corresponding position, the limit position signal is opened, and the control circuit can lock the output signal to ensure that the signal will not fail due to device shaking or other reasons. When the device leaves the specific position, the limit position signal is closed, and the control circuit also fails, thereby disconnecting the circuit, and the self-holding circuit also fails. Therefore, by adding a self-holding circuit, the shaking problem of the limit position signal can be effectively prevented, and the device can be stopped or moved at the correct position.

[0005] However, for the normally closed limit position, when the device reaches the specific position, the limit position signal is closed, and the self-holding circuit is also powered off at this time, so the stability of the output signal cannot be maintained by adding a self-holding circuit. Therefore, the prior art lacks a plow coal device anti-shaking control circuit based on a normally closed limit position to maintain the stability of the output signal and solve the problem of abnormal control and operation caused by vibration of the coal conveying system. SUMMARY

[0006] The purpose of the present application is to overcome the defects of the prior art and provide a plow coal device anti-shaking control circuit based on a normally closed limit position and a plow coal device. The present application can maintain the stability of the output signal and solve the problem of abnormal control and operation caused by vibration of the coal conveying system.

[0007] The object of the present application can be achieved by the following technical solutions.

[0008] According to a first aspect of the present application, the present application provides a plow coal device anti-shaking control circuit based on normally closed limit, comprising a plow coal device motor, at least two normally closed limiters and at least two AC contactors, the plow coal device motor is connected with any of the AC contactors, the normally closed contact of each AC contactor is connected with the normally open contact of the other AC contactor in parallel, and then connected with any normally closed limiter, the normally closed limiter is used to sense the position of the plow head of the plow coal device.

[0009] Preferably, each AC contactor comprises a button, a normally open contact, a normally closed contact and a contactor body, when the number of AC contactors and normally closed limiters is two, each button is connected with a normally closed limiter respectively, the normally open contact of one AC contactor is connected with the normally closed contact of the other AC contactor in parallel, one end is connected with the corresponding button, and the other end is connected with the corresponding contactor body, and the plow coal device motor is connected with any contactor body.

[0010] Preferably, when the number of AC contactors and normally closed limiters is two, each button is connected with a normally closed limiter respectively, the normally open contact of one AC contactor is connected with the normally closed contact of the other AC contactor in parallel, one end is connected with the corresponding button, and the other end is connected with the corresponding contactor body, and the plow coal device motor is connected with any contactor body.

[0011] For the first AC contactor and the second AC contactor, the first normally closed limiter and the second normally closed limiter, the button of the first AC contactor is connected with the first normally closed limiter, the normally open contact of the first AC contactor and the normally closed contact of the second AC contactor are connected in parallel, one end is connected with the button of the first AC contactor, and the other end is connected with the contactor body of the first AC contactor; the button of the second AC contactor is connected with the second normally closed limiter, the normally closed contact of the first AC contactor and the normally open contact of the second AC contactor are connected in parallel, one end is connected with the button of the second AC contactor, and the other end is connected with the contactor body of the second AC contactor, and the contactor body of the second AC contactor is connected with the plow coal device motor.

[0012] Preferably, the normally closed limiter adopts a normally closed limiter with a model of LJ18A3-8-J / DZ.

[0013] Preferably, the AC contactor adopts an AC contactor with the same model.

[0014] Preferably, the AC contactor is a 220V single-phase CJX2-1210 3210 9511 NXC-65 three-phase 380V 24v positive AC contactor.

[0015] Preferably, the AC contactors are Schneider AC contactors of LC1D09, LC1D12, LC1A18, LC1D32, AC220V, AC380V and AC110V.

[0016] According to the second aspect of the present application, the present application provides a plough coal machine, comprising a plough coal machine body and a plough head connected with the plough coal machine body, and further comprising the anti-shaking control circuit based on the normally closed limit stop as claimed in any one of the above, which is arranged in the plough coal machine body and used to sense the position of the plough head.

[0017] Preferably, each of the AC contactors comprises a button, a normally open contact, a normally closed contact and a contactor body, when the number of the AC contactors and the number of the normally closed limit stops are both two, each button is connected with a normally closed limit stop, the normally open contact of one AC contactor is connected in parallel with the normally closed contact of another AC contactor, one end of which is connected with the corresponding button and the other end of which is connected with the corresponding contactor body, and the plough coal machine motor is connected with any contactor body.

[0018] Preferably, the two normally closed limit stops are of the same type, and the two AC contactors are of the same type.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] The present application ensures that the plough coal machine motor can stably operate when the plough head of the plough coal machine is close to the first normally closed limit stop and not close to the second normally closed limit stop, and stops operating when the plough head is close to the second normally closed limit stop, by arranging two normally closed limit stops, two AC contactors and a plough coal machine motor connected with the output end of one AC contactor, connecting the normally closed contact of one AC contactor in parallel with the normally open contact of another AC contactor, and connecting one normally closed limit stop, which can maintain the stability of the output signal, solve the problem of abnormal control and operation caused by the vibration of the coal conveying system, and make up for the defect that the prior art does not have an anti-shaking control circuit based on the normally closed limit stop of the plough coal machine. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The present application provides a structure schematic diagram of an anti-shaking control circuit based on the normally closed limit stop of the plough coal machine.

[0022] MARKED DESCRIPTION IN THE DRAWINGS:

[0023] 10. first normally closed position limiter, 20. second normally closed position limiter, 301. first button, 302. first normally open contact, 303. first normally closed contact, 304. first contactor body, 401. second button, 402. second normally open contact, 403. second normally closed contact, 404. second contactor body, 50. plough coal machine motor. DETAILED DESCRIPTION

[0024] The present application will be described in detail below with reference to the drawings and specific embodiments.

[0025] Embodiment

[0026] According to the first aspect of the present application, the embodiment provides a plough coal machine anti-shaking control circuit based on normally closed position limiter, which comprises a plough coal machine motor 50, at least two normally closed position limiters and at least two AC contactors, the plough coal machine motor 50 is connected with any of the AC contactors, the normally closed contact of each AC contactor is connected in parallel with the normally open contact of the other AC contactor, and then connected with any normally closed position limiter, the normally closed position limiter is used to sense the position of the plough head of the plough coal machine.

[0027] Specifically, referring to Figure 1 The plough coal machine anti-shaking control circuit based on normally closed position limiter provided by the embodiment comprises a first normally closed position limiter 10, a second normally closed position limiter 20, a first AC contactor and a second AC contactor, the first AC contactor 30 comprises a first button 301, a first normally open contact 302, a first normally closed contact 303 and a first contactor body 304, and the second AC contactor 40 comprises a second button 401, a second normally open contact 402, a second normally closed contact 403 and a second contactor body 404.

[0028] The first button 301 is connected with the first normally closed position limiter 10, the first normally open contact 302 and the second normally closed contact 403 are connected in parallel, one end of which is connected with the first button 301 and the other end of which is connected with the first contactor body 304; the second button 401 is connected with the second normally closed position limiter 20, the first normally closed contact 303 and the second normally open contact 402 are connected in parallel, one end of which is connected with the second button 401 and the other end of which is connected with the second contactor body 404, and the second contactor body 404 is connected with the plough coal machine motor 50.

[0029] Working principle: when the plow coal device plow head is close to the first normally closed limit stopper 10, the first normally closed limit stopper 10 acts, and is converted from the normally closed state to the normally open state, while the second normally closed limit stopper 20 does not act, and remains in the normally closed state, the second button 401 is started, the second contactor body 404 is powered, so that the second normally open contact 402 is in the normally closed state, and the second normally closed contact 403 is in the normally open state, then after the second button 401 is released, the second contactor body 404 is kept attracted, and the plow coal device motor 50 connected with the second contactor body 404 is started to work.

[0030] When the plow coal device plow head is close to the second normally closed limit stopper 20, the second normally closed limit stopper 20 acts, and is converted from the normally closed state to the normally open state, while the first normally closed limit stopper 10 does not act, and remains in the normally closed state, the first button 301 is started, the first contactor body 304 is powered, so that the first normally open contact 302 is in the normally closed state, and the first normally closed contact 303 is in the normally open state, since the first normally open contact 303 is still in the normally open state, the second contactor body 404 is not attracted, and the plow coal device motor 50 connected with the second contactor body 404 cannot be started to work.

[0031] As an optional embodiment, the first normally closed limit stopper 10 and the second normally closed limit stopper 20 adopt the same type of normally closed limit stopper, which is LJ18A3-8-J / DZ.

[0032] As an optional embodiment, the first AC contactor and the second AC contactor adopt the same type of AC contactor, which can be a 220V single-phase CJX2-1210 3210 9511 NXC-65 three-phase 380V 24v positive AC contactor, or an LC1D09 LC1D12 LC1A18 LC1D32 AC220V AC380V AC110V Schneider AC contactor.

[0033] According to the second aspect of the present application, the embodiment provides a plow coal device, which comprises a plow coal device body and a plow head connected with the plow coal device body, and further comprises the plow coal device anti-shaking control circuit based on the normally closed limit stopper as any one of the above, the plow coal device anti-shaking control circuit is arranged in the plow coal device body, and the normally closed limit stopper is used to sense the position of the plow head.

[0034] The above describes the preferred embodiment of the present application in detail. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the present application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment on the basis of the prior art according to the concept of the present application shall be within the protection scope determined by the claims.

Claims

1. A kind of plow coal ware anti-shaking control circuit based on normally closed limit, it is characterized in that, The plough coal device motor (50) is connected with any of the AC contactors, the normally closed contact of each of the AC contactors is connected with the normally open contact of the other AC contactors in parallel, and the normally closed limit stopper is used to sense the position of the plough head of the plough coal device. When the number of AC contactors and normally closed limit stoppers is two, each button is connected with a normally closed limit stopper, the normally open contact of one AC contactor is connected with the normally closed contact of the other AC contactor in parallel, one end is connected with the corresponding button, and the other end is connected with the corresponding contactor body. The AC contactors are the same type of AC contactors. The AC contactors are the Changtai AC contactors or the Schneider AC contactors.

2. The anti-shaking control circuit of the plow coal device based on the normally closed limiting position according to claim 1, characterized in that, When the number of AC contactors and normally closed limit stoppers is two, each button is connected with a normally closed limit stopper, the normally open contact of one AC contactor is connected with the normally closed contact of the other AC contactor in parallel, one end is connected with the corresponding button, and the other end is connected with the corresponding contactor body. For the first AC contactor and the second AC contactor, the first normally closed limit stopper and the second normally closed limit stopper, the button of the first AC contactor is connected with the first normally closed limit stopper, the normally open contact of the first AC contactor is connected with the normally closed contact of the second AC contactor in parallel, one end is connected with the button of the first AC contactor, and the other end is connected with the contactor body of the first AC contactor. The button of the second AC contactor is connected with the second normally closed limit stopper, the normally closed contact of the first AC contactor is connected with the normally open contact of the second AC contactor in parallel, one end is connected with the button of the second AC contactor, and the other end is connected with the contactor body of the second AC contactor.

3. The anti-shaking control circuit of the plow coal device based on the normally closed limiting position according to claim 1, characterized in that, The normally closed limit stopper is the normally closed limit stopper with the model LJ18A3-8-J / DZ.

4. A coal plough comprising a coal plough body and a plough head connected to the coal plough body, characterized in that, The plough coal device anti-shaking control circuit based on the normally closed limit stopper is arranged in the main body of the plough coal device, and the normally closed limit stopper is used to sense the position of the plough head.

5. A coal plough according to claim 4, characterised in that When the number of AC contactors and normally closed limit stoppers is two, each button is connected with a normally closed limit stopper, the normally open contact of one AC contactor is connected with the normally closed contact of the other AC contactor in parallel, one end is connected with the corresponding button, and the other end is connected with the corresponding contactor body.

6. A coal plough according to claim 4, characterised in that The two normally closed limit stoppers are the same type of normally closed limit stoppers. The AC contactors are the Changtai AC contactors or the Schneider AC contactors.

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