A loader wiper control system and wiper control method

Abstract

The present application relates to the technical field of engineering machinery, specifically, relates to a loader wiper control system and a wiper control method. The system comprises a total switch SZ and a reset switch SF arranged in parallel; the total switch SZ is connected with normally open switches S1, S2, S4, a normally open proximity switch Sn4, a normally open proximity switch Sn1 and a normally closed switch S6 arranged in parallel in series; the switch S2 is associated with the switch S6, the switch S6 is closed when the switch S2 is opened, and the switch S6 is opened when the switch S2 is closed. The control method of the reciprocating movement of the wiper is: closing the total switch SZ alone; the control method of the reset movement of the wiper is: closing the reset switch SF alone. When in use, the proximity switch is used to detect the position of the wiper and trigger the movement of the wiper, so that the service life is long and the use is safer.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, specifically to a loader windshield wiper control system and wiper control method. Background Technology

[0002] Currently, the reciprocating motion control circuit of the loader wiper is a rotary control circuit. The rotary disk and the wires are connected by brushes. Over time, the brushes will inevitably wear down, leading to increased resistance and potentially causing high-temperature fires. Summary of the Invention

[0003] The purpose of this invention is to provide a loader windshield wiper control system and wiper control method to address the above problems. It uses a proximity switch to detect the wiper position and trigger the wiper movement, resulting in a long service life and safer operation.

[0004] To achieve the above objectives, the present invention discloses a loader windshield wiper control system, which includes a main switch SZ and a reset switch SF connected in parallel. The main switch SZ is connected in series with normally open switches S1, S2, S4, Sn4, Sn1, and S6, which are connected in parallel. Switch S2 is associated with switch S6. Switch S1 is connected in series with contactor KM2, which controls switch S2. Contactor KM2 is connected in series with the forward rotation circuit of the motor. Switch S2 is connected in series with switch S3, which is connected in parallel with contactor KM2. Switch S4 is connected in parallel with contactor KM2. The motor reversing circuit is connected in series. The proximity switch Sn4 is connected in series with the contactor KM3 for controlling the switch S3. The proximity switch Sn1 is connected in series with the contactor KM1 for controlling the switch S1. The normally closed switch S6 is connected in series with the resistor R1. The normally closed switch S6 is connected in series with the contactor KM4 for controlling the switch S4. The normally closed switch S6 is connected in series with the normally open proximity switch Sn2. The proximity switch Sn2 and the contactor KM4 are connected in parallel. The reset switch SF is connected in series with normally open switches S5 that are arranged in parallel. The contactor KM5 and normally open proximity switch Sn3 are used to control switch S5. The normally open switch S5 is connected in series with the motor reversing circuit. Proximity switches Sn1, Sn2, and Sn3 are located at the beginning of the wiper stroke, while proximity switch Sn4 is located at the end of the wiper stroke.

[0005] The control method for the reciprocating motion of the windshield wipers is: closing the main switch SZ separately; When the wiper is in the middle of its stroke, contactor KM4 is activated, switch S4 is closed, the motor reverses, and the wiper moves towards the start of its stroke. When the wiper reaches the start of its stroke, proximity switch Sn3 is closed, contactor KM5 is short-circuited and stops working, switch S5 is opened, and the motor stops working. When the wiper is at the beginning of its travel, proximity switches Sn1 and Sn2 are closed, contactor KM1 is activated, switch S1 is closed, contactor KM2 is activated, switch S2 is closed, the motor rotates forward, and the wiper moves towards the end of its travel. Proximity switches Sn1, Sn2, and Sn3 are then opened, and switch S1 is also opened. When the wiper reaches the end of its travel, proximity switch Sn4 closes, contactor KM3 operates, switch S3 closes, contactor KM2 is short-circuited and stops operating, switch S2 opens, switch S6 opens and closes, contactor KM4 operates, switch S4 closes, the motor reverses, and the wiper moves towards the beginning of its travel. When the wiper reaches the beginning of its travel, proximity switch Sn2 closes, contactor KM4 is short-circuited and stops operating, switch S4 opens, and contactor KM1 starts operating again. This cycle repeats to achieve the reciprocating motion of the wiper.

[0006] The control method for the wiper reset movement is: closing the reset switch SF separately; When the wiper is in the middle or at the end of its stroke, contactor KM5 is activated, switch S5 is closed, the motor reverses, and the wiper moves towards the start of its stroke. When the wiper reaches the start of its stroke, proximity switch Sn3 is closed, contactor KM5 is short-circuited and stops working, switch S5 is opened, and the motor stops working. In addition, proximity switches Sn1 and Sn2 are closed. When the wiper is at the start of its travel, proximity switch Sn3 is closed, and the motor does not work.

[0007] When in use, a proximity switch is used to detect the position of the windshield wipers and trigger their movement, resulting in a long service life and safer operation.

[0008] Preferably, the main switch SZ and the reset switch SF constitute a rocker switch, which has the functions of closing the main switch SZ alone, closing the reset switch SF alone, and opening both the main switch SZ and the reset switch SF.

[0009] When in use, you can select the functions of closing the main switch SZ alone, closing the reset switch SF alone, or opening both the main switch SZ and the reset switch SF, which is convenient to use.

[0010] A windshield wiper control method utilizing the loader windshield wiper control system described above, wherein: the control method for the reciprocating motion of the windshield wiper is: closing the main switch SZ separately; When the wiper is in the middle of its stroke, contactor KM4 is activated, switch S4 is closed, the motor reverses, and the wiper moves towards the start of its stroke. When the wiper reaches the start of its stroke, proximity switch Sn3 is closed, contactor KM5 is short-circuited and stops working, switch S5 is opened, and the motor stops working. When the wiper is at the beginning of its travel, proximity switches Sn1 and Sn2 are closed, contactor KM1 is activated, switch S1 is closed, contactor KM2 is activated, switch S2 is closed, the motor rotates forward, and the wiper moves towards the end of its travel. Proximity switches Sn1, Sn2, and Sn3 are then opened, and switch S1 is also opened. When the wiper is at the end of its travel, proximity switch Sn4 closes, contactor KM3 operates, switch S3 closes, contactor KM2 is short-circuited and stops operating, switch S2 opens, switch S6 opens and closes, contactor KM4 operates, switch S4 closes, the motor reverses, and the wiper moves towards the beginning of its travel. When the wiper reaches the beginning of its travel, proximity switch Sn2 closes, contactor KM4 is short-circuited and stops operating, switch S4 opens, and contactor KM1 starts operating again. This cycle repeats to achieve the reciprocating motion of the wiper. The control method for the wiper reset movement is: closing the reset switch SF separately; When the wiper is in the middle or at the end of its stroke, contactor KM5 is activated, switch S5 is closed, the motor reverses, and the wiper moves towards the start of its stroke. When the wiper reaches the start of its stroke, proximity switch Sn3 is closed, contactor KM5 is short-circuited and stops working, switch S5 is opened, and the motor stops working. In addition, proximity switches Sn1 and Sn2 are closed. When the wiper is at the start of its travel, proximity switch Sn3 is closed, and the motor does not work.

[0011] When in use, a proximity switch is used to detect the position of the windshield wipers and trigger their movement, resulting in a long service life and safer operation.

[0012] In summary, the beneficial effects of this invention are: during use, a proximity switch is used to detect the position of the windshield wipers and trigger their movement, resulting in a long service life and safer use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the circuit structure of a loader windshield wiper control system according to the present invention; Figure 2 This is a schematic diagram of the wiper stroke in a loader wiper control system according to the present invention. Detailed Implementation

[0014] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0015] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0016] Example 1, as Figure 1 , 2 As shown, a loader windshield wiper control system includes a main switch SZ and a reset switch SF connected in parallel.

[0017] Specifically, the main switch SZ and the reset switch SF constitute a rocker switch, which has the functions of closing the main switch SZ alone, closing the reset switch SF alone, and opening both the main switch SZ and the reset switch SF.

[0018] When in use, you can select the functions of closing the main switch SZ alone, closing the reset switch SF alone, or opening both the main switch SZ and the reset switch SF, which is convenient to use.

[0019] The main switch SZ is connected in series with normally open switches S1, S2, S4, Sn4, Sn1 and Sn4, and normally closed switch S6, which are arranged in parallel. Switch S2 is associated with switch S6. Specifically, when switch S2 is open, switch S6 is closed, and when switch S2 is closed, switch S6 is open.

[0020] Switch S1 is connected in series with contactor KM2 for controlling switch S2. Contactor KM2 is connected in series with the forward rotation circuit of the motor. Switch S2 is connected in series with switch S3. Switch S3 and contactor KM2 are connected in parallel. Switch S4 is connected in series with the reverse rotation circuit of the motor. Proximity switch Sn4 is connected in series with contactor KM3 for controlling switch S3. Proximity switch Sn1 is connected in series with contactor KM1 for controlling switch S1. Normally closed switch S6 is connected in series with resistor R1. Normally closed switch S6 is connected in series with contactor KM4 for controlling switch S4. Normally closed switch S6 is connected in series with normally open proximity switch Sn2. Proximity switch Sn2 and contactor KM4 are connected in parallel.

[0021] The reset switch SF is connected in series with normally open switches S5 that are arranged in parallel. Contactor KM5 and normally open proximity switch Sn3 are used to control switch S5. The normally open switch S5 is connected in series with a motor reversing circuit.

[0022] Proximity switches Sn1, Sn2, and Sn3 are located at the beginning of the wiper stroke, while proximity switch Sn4 is located at the end of the wiper stroke.

[0023] The control method for the reciprocating motion of the windshield wipers is: closing the main switch SZ separately; When the wiper is in the middle of its stroke, contactor KM4 is activated, switch S4 is closed, the motor reverses, and the wiper moves towards the start of its stroke. When the wiper reaches the start of its stroke, proximity switch Sn3 is closed, contactor KM5 is short-circuited and stops working, switch S5 is opened, and the motor stops working. When the wiper is at the beginning of its travel, proximity switches Sn1 and Sn2 are closed, contactor KM1 is activated, switch S1 is closed, contactor KM2 is activated, switch S2 is closed, the motor rotates forward, and the wiper moves towards the end of its travel. Proximity switches Sn1, Sn2, and Sn3 are then opened, and switch S1 is also opened. When the wiper reaches the end of its travel, proximity switch Sn4 closes, contactor KM3 operates, switch S3 closes, contactor KM2 is short-circuited and stops operating, switch S2 opens, switch S6 opens and closes, contactor KM4 operates, switch S4 closes, the motor reverses, and the wiper moves towards the beginning of its travel. When the wiper reaches the beginning of its travel, proximity switch Sn2 closes, contactor KM4 is short-circuited and stops operating, switch S4 opens, and contactor KM1 starts operating again. This cycle repeats to achieve the reciprocating motion of the wiper.

[0024] The control method for the wiper reset movement is: closing the reset switch SF separately; When the wiper is in the middle or at the end of its stroke, contactor KM5 is activated, switch S5 is closed, the motor reverses, and the wiper moves towards the start of its stroke. When the wiper reaches the start of its stroke, proximity switch Sn3 is closed, contactor KM5 is short-circuited and stops working, switch S5 is opened, and the motor stops working. In addition, proximity switches Sn1 and Sn2 are closed. When the wiper is at the start of its travel, proximity switch Sn3 is closed, and the motor does not work.

[0025] When in use, a proximity switch is used to detect the position of the windshield wipers and trigger their movement, resulting in a long service life and safer operation.

[0026] Example 2, a windshield wiper control method using the loader windshield wiper control system as described in claim 1, wherein the control method for the reciprocating motion of the windshield wiper is: closing the main switch SZ separately; When the wiper is in the middle of its stroke, contactor KM4 is activated, switch S4 is closed, the motor reverses, and the wiper moves towards the start of its stroke. When the wiper reaches the start of its stroke, proximity switch Sn3 is closed, contactor KM5 is short-circuited and stops working, switch S5 is opened, and the motor stops working. When the wiper is at the beginning of its travel, proximity switches Sn1 and Sn2 are closed, contactor KM1 is activated, switch S1 is closed, contactor KM2 is activated, switch S2 is closed, the motor rotates forward, and the wiper moves towards the end of its travel. Proximity switches Sn1, Sn2, and Sn3 are then opened, and switch S1 is also opened. When the wiper is at the end of its travel, proximity switch Sn4 closes, contactor KM3 operates, switch S3 closes, contactor KM2 is short-circuited and stops operating, switch S2 opens, switch S6 opens and closes, contactor KM4 operates, switch S4 closes, the motor reverses, and the wiper moves towards the beginning of its travel. When the wiper reaches the beginning of its travel, proximity switch Sn2 closes, contactor KM4 is short-circuited and stops operating, switch S4 opens, and contactor KM1 starts operating again. This cycle repeats to achieve the reciprocating motion of the wiper. The control method for the wiper reset movement is: closing the reset switch SF separately; When the wiper is in the middle or at the end of its stroke, contactor KM5 is activated, switch S5 is closed, the motor reverses, and the wiper moves towards the start of its stroke. When the wiper reaches the start of its stroke, proximity switch Sn3 is closed, contactor KM5 is short-circuited and stops working, switch S5 is opened, and the motor stops working. In addition, proximity switches Sn1 and Sn2 are closed. When the wiper is at the start of its travel, proximity switch Sn3 is closed, and the motor does not work.

[0027] When in use, a proximity switch is used to detect the position of the windshield wipers and trigger their movement, resulting in a long service life and safer operation.

[0028] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A loader windshield wiper control system, characterized in that, This includes the main switch SZ and the reset switch SF, which are connected in parallel. The main switch SZ is connected in series with normally open switches S1, S2, S4, Sn4, Sn1, and S6, which are connected in parallel. Switch S2 is associated with switch S6. Switch S1 is connected in series with contactor KM2, which controls switch S2. Contactor KM2 is connected in series with the forward rotation circuit of the motor. Switch S2 is connected in series with switch S3, which is connected in parallel with contactor KM2. Switch S4 is connected in parallel with contactor KM2. The motor reversing circuit is connected in series. The proximity switch Sn4 is connected in series with the contactor KM3 for controlling the switch S3. The proximity switch Sn1 is connected in series with the contactor KM1 for controlling the switch S1. The normally closed switch S6 is connected in series with the resistor R1. The normally closed switch S6 is connected in series with the contactor KM4 for controlling the switch S4. The normally closed switch S6 is connected in series with the normally open proximity switch Sn2. The proximity switch Sn2 and the contactor KM4 are connected in parallel. The reset switch SF is connected in series with a normally open switch S5, a contactor KM5 for controlling switch S5, and a normally open proximity switch Sn3, which are arranged in parallel. The normally open switch S5 is connected in series with a motor reversing circuit. Proximity switches Sn1, Sn2, and Sn3 are located at the beginning of the wiper stroke, while proximity switch Sn4 is located at the end of the wiper stroke.

2. The loader wiper control system as described in claim 1, characterized in that, The main switch SZ and the reset switch SF constitute a rocker switch, which has the functions of closing the main switch SZ alone, closing the reset switch SF alone, and opening both the main switch SZ and the reset switch SF.

3. A windshield wiper control method utilizing the loader wiper control system as described in claim 1, characterized in that, The control method for the reciprocating motion of the windshield wipers is: closing the main switch SZ separately; When the wiper is in the middle of its stroke, contactor KM4 is activated, switch S4 is closed, the motor reverses, and the wiper moves towards the start of its stroke. When the wiper reaches the start of its stroke, proximity switch Sn3 is closed, contactor KM5 is short-circuited and stops working, switch S5 is opened, and the motor stops working. When the wiper is at the beginning of its travel, proximity switches Sn1 and Sn2 are closed, contactor KM1 is activated, switch S1 is closed, contactor KM2 is activated, switch S2 is closed, the motor rotates forward, and the wiper moves towards the end of its travel. Proximity switches Sn1, Sn2, and Sn3 are then opened, and switch S1 is also opened. When the wiper is at the end of its travel, proximity switch Sn4 closes, contactor KM3 operates, switch S3 closes, contactor KM2 is short-circuited and stops operating, switch S2 opens, switch S6 opens and closes, contactor KM4 operates, switch S4 closes, the motor reverses, and the wiper moves towards the beginning of its travel. When the wiper reaches the beginning of its travel, proximity switch Sn2 closes, contactor KM4 is short-circuited and stops operating, switch S4 opens, and contactor KM1 starts operating again. This cycle repeats to achieve the reciprocating motion of the wiper. The control method for the wiper reset movement is: closing the reset switch SF separately; When the wiper is in the middle or at the end of its stroke, contactor KM5 is activated, switch S5 is closed, the motor reverses, and the wiper moves towards the start of its stroke. When the wiper reaches the start of its stroke, proximity switch Sn3 is closed, contactor KM5 is short-circuited and stops working, switch S5 is opened, and the motor stops working. In addition, proximity switches Sn1 and Sn2 are closed. When the wiper is at the start of its travel, proximity switch Sn3 is closed, and the motor does not work.

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