A winch motor rope retraction control method

Abstract

The present invention provides a winch motor rope collection control method, which relates to the technical field of winch motors. A first group of wires and a second group of wires are pre-wound on the stator of the same winch motor, and the method includes the following steps: S1, judging whether the current winch motor is in a rope collection state; if so, controlling the power supply to be electrically connected to the first group of wires and entering S2; otherwise, returning to S1; S2, obtaining the current working current of the winch motor; S3, judging whether the current working current is higher than a preset current value; if so, continuing to control the power supply to be electrically connected to the first group of wires; otherwise, controlling the power supply to be electrically connected to the second group of wires; S4, judging whether the winch motor rope collection is in place; if so, the winch motor stops working; otherwise, returning to S2. A group of wires is added to the stator of the original winch motor to drive the winch motor, and then judging whether the steel rope connection is loaded according to the size of the actual working current, so that the winch motor has a faster rope collection speed when it is unloaded.

Description

Technical Field

[0001] The present invention relates to the technical field of winch motors, and in particular to a winch motor rope retraction control method. Background Art

[0002] A car winch is a tool that uses its own power engine to rotate and pulls a car stuck in trouble out through a fixed or towing steel rope or special cable at the other end.

[0003] The power engine is generally a winch motor, which includes a stator and a rotor. The stator is wound with a wire and then electrically connected to the power supply, while the rotor is connected to the steel rope. After the power supply supplies power to the wire, the rotor rotates to release and reel in the steel rope. When the steel rope connected to the winch motor is used to pull out a car that is stuck in trouble, the steel rope will be reeled in at a constant and slow speed to ensure traction safety.

[0004] After the steel rope is pulled out of the car, it is necessary to retract the pulled steel rope. However, in the prior art, the winch motor of the car winch generally uses only one torque motor to pull the steel rope for the rope release and rope retraction operations, which results in the steel rope still being retracted at a constant slow speed in the no-load state after the car is pulled out, that is, in the no-load state. The rope retraction speed is slow and time-consuming in the no-load state. Summary of the invention

[0005] The technical problem to be solved by the present invention is that the winch motor in the prior art is too slow and time-consuming to retract the rope under no-load. In order to overcome the above defects of the prior art, the present invention provides a winch motor rope retracting control method.

[0006] The present invention provides a winch motor rope collection control method, which pre-winds a first group of wires and a second group of wires on a stator of the same winch motor, comprising the following steps: S1, determine whether the current winch motor is in the rope retracting state; If yes, control the power supply to be electrically connected to the first group of wires, the winch motor drives the steel rope to be retracted, and the process goes to step S2; otherwise, the process returns to step S1; S2, obtaining the current working current of the winch motor; S3, determining whether the current working current is higher than the preset current value; If yes, continue to control the power supply to be electrically connected to the first set of wires, and the winch motor drives the steel rope to slowly retract the rope; otherwise, control the power supply to be electrically connected to the second set of wires, and the winch motor drives the steel rope to quickly retract the rope; S4, judging whether the winch motor is in place to retract the rope; If yes, the winch motor stops working; otherwise, return to step S2.

[0007] Compared with the prior art, the winch motor rope retraction control method disclosed in the present application has the following advantages: by adding a group of wires to the stator of the original winch motor to drive the winch motor, and then determining whether the steel rope connected to the winch motor is loaded according to the actual working current, different rope retraction speeds can be achieved, making it convenient for the winch motor to quickly retract the rope when it is idling.

[0008] In a possible implementation, in step S3, if the current operating current is lower than a preset current value, the power supply is controlled to be disconnected from the first group of wires, and the power supply is controlled to be electrically connected to the second group of wires; wherein the internal resistance of the first group of wires is greater than the internal resistance of the second group of wires.

[0009] Compared with the prior art, the winch motor can quickly retract the rope by switching to another group of wires with smaller internal resistance, which is simple to control and easy to operate.

[0010] In a possible implementation manner, a cross-sectional area of ​​the first group of wires is smaller than a cross-sectional area of ​​the second group of wires.

[0011] Compared with the prior art, the two groups of wires have different internal resistances by having different thicknesses.

[0012] In a possible implementation, in step S3, if the current operating current is lower than the preset current value, the power supply is continuously controlled to be electrically connected to the first group of wires, and the power supply is controlled to be electrically connected to the second group of wires.

[0013] Compared with the prior art, the winch motor can quickly retract the rope by supplying power to two sets of wires at the same time, which is simple to control and easy to operate.

[0014] In a possible implementation, the power supply is electrically connected to the first group of wires through a first electromagnetic switch, the power supply is electrically connected to the second group of wires through a second electromagnetic switch, and the control end of the first electromagnetic switch and the control end of the second electromagnetic switch are both electrically connected to a controller.

[0015] Compared with the prior art, the on-off control circuit is realized by cooperating with the electromagnetic switch through the controller, which is convenient to operate.

[0016] In a possible implementation manner, both the first electromagnetic switch and the second electromagnetic switch are relays or contactors.

[0017] In a possible implementation, a first current sensor is electrically connected between the first electromagnetic switch and the first group of wires, a second current sensor is electrically connected between the second electromagnetic switch and the second group of wires, and both the first current sensor and the second current sensor are electrically connected to the controller.

[0018] Compared with the prior art, the working current is detected by a current sensor and then judged by a controller, and the detection method is simple.

[0019] In a possible implementation manner, both the first current sensor and the second current sensor are shunt plates or direct current transformers.

[0020] Compared with the existing technology, the resistance of the shunt is fixed. Only by collecting the voltage information on the shunt can the operating current of the winch motor be calculated. The shunt is small in size and easy to connect and fix. The DC transformer is easy to install and does not need to be connected to the circuit, making it easy to collect current.

[0021] In a possible implementation manner, the first electromagnetic switch, the second electromagnetic switch, the first current sensor, and the second current sensor are all fixed on a circuit board.

[0022] Compared with the prior art, various components can be easily fixed by providing a circuit board.

[0023] In a possible implementation manner, the winch motor is a brushless motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The present invention is a flow chart of a winch motor rope retracting control method. DETAILED DESCRIPTION

[0025] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0026] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0027] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments. Example

[0028] See also Figure 1 As shown, the embodiment of the present application discloses a winch motor rope collection control method, which pre-winds a first group of wires and a second group of wires on the stator of the same winch motor, including the following steps: S1, determine whether the current winch motor is in the rope retracting state; If yes, control the power supply to be electrically connected to the first group of wires, the winch motor drives the steel rope to be retracted, and the process goes to step S2; otherwise, the process returns to step S1; S2, obtaining the current working current of the winch motor; S3, determining whether the current working current is higher than the preset current value; If yes, continue to control the power supply to be electrically connected to the first set of wires, and the winch motor drives the steel rope to slowly retract the rope; otherwise, control the power supply to be electrically connected to the second set of wires, and the winch motor drives the steel rope to quickly retract the rope; S4, judging whether the winch motor is in place to retract the rope; If yes, the winch motor stops working; otherwise, return to step S2.

[0029] By adding a set of wires to the stator of the original winch motor to drive the winch motor, and then determining whether the steel rope connected to the winch motor is loaded according to the actual working current, different rope-collecting speeds can be achieved, making it convenient for the winch motor to quickly collect the rope when it is idling.

[0030] In order to facilitate the connection between the first group of wires and the second group of wires, the first group of wires are led out of the first connection terminal, and the second group of wires are led out of the second connection terminal, and the connection with the power supply is convenient through the first connection terminal and the second connection terminal.

[0031] In step S1, it can be determined whether the voltage difference between the two ends of the winch motor is positive or negative, thereby determining whether the winch motor is currently in a rope-releasing state or a rope-retracting state.

[0032] In this embodiment, in step S3, if the current working current is lower than the preset current value, the power supply is controlled to be disconnected from the first group of wires, and the power supply is controlled to be electrically connected to the second group of wires; wherein the internal resistance of the first group of wires is greater than the internal resistance of the second group of wires.

[0033] By switching to another set of wires with smaller internal resistance, the winch motor can be quickly retracted, which is simple to control and easy to operate.

[0034] At this time, the current working current of the winch motor is obtained in step S2, specifically: S21, respectively obtaining currents flowing through the first group of wires and the second group of wires; S22. If there is current in the first group of wires and there is no current in the second group of wires, the current flowing through the first group of wires is used as the current working current of the winch motor; if there is no current in the first group of wires and there is current in the second group of wires, the current flowing through the second group of wires is used as the current working current of the winch motor.

[0035] In step S3, specifically, if the current working current is higher than the preset current value, it means that the current winch motor is performing traction work through the steel rope. At this time, there is a load, and a wire with a larger internal resistance is used to drive the winch motor to work, so that the winch motor can slowly retract the rope; if the current working current is lower than the preset current value, it means that the steel rope connected to the current winch motor is in a no-load state. In the no-load state, a wire with a smaller internal resistance is used to drive the winch motor to work, which has a higher working power and enables the winch motor to quickly retract the rope.

[0036] As one implementation, the cross-sectional area of ​​the first group of wires is smaller than the cross-sectional area of ​​the second group of wires. The two groups of wires have different thicknesses to achieve different internal resistances.

[0037] Of course, in actual use, two groups of wires of the same thickness but different materials, or two groups of wires of different thicknesses but different materials may be used, as long as the internal resistance of the first group of wires is greater than the internal resistance of the second group of wires.

[0038] In this embodiment, the power supply is electrically connected to the first group of wires through the first electromagnetic switch, the power supply is electrically connected to the second group of wires through the second electromagnetic switch, and the control end of the first electromagnetic switch and the control end of the second electromagnetic switch are both electrically connected to the controller. The controller cooperates with the electromagnetic switch to realize the on-off of the control circuit, which is easy to operate.

[0039] The first electromagnetic switch and the second electromagnetic switch are both relays or contactors. Of course, other electromagnetic switches, such as photoelectric couplers, MOS tubes, etc., can also be used.

[0040] In this embodiment, a first current sensor is electrically connected between the first electromagnetic switch and the first group of wires, a second current sensor is electrically connected between the second electromagnetic switch and the second group of wires, and both the first current sensor and the second current sensor are electrically connected to the controller.

[0041] The working current is detected by a current sensor and then judged by a controller, and the detection method is simple.

[0042] Among them, the first current sensor and the second current sensor are both shunts or DC transformers. The resistance of the shunt is fixed, and the operating current of the winch motor can be calculated by collecting the voltage information on the shunt. The shunt is small in size and easy to connect and fix; the DC transformer is easy to install and does not need to be connected to the circuit, which is convenient for collecting current.

[0043] In this embodiment, the first electromagnetic switch, the second electromagnetic switch, the first current sensor and the second current sensor are all fixed on a circuit board. By providing a circuit board, it is convenient to fix various components.

[0044] In this embodiment, the winch motor is a brushless motor. The brushless motor has the advantages of high efficiency, reliability, long life, etc., and can meet the needs of different fields. Example

[0045] This embodiment is basically the same as the first embodiment, except for step S3.

[0046] In this embodiment, in step S3, if the current working current is lower than the preset current value, the power supply is continuously controlled to be electrically connected to the first set of wires, and the power supply is controlled to be electrically connected to the second set of wires.

[0047] By supplying power to two sets of wires at the same time, the winch motor can be quickly retracted, with simple control and easy operation.

[0048] At this time, the current working current of the winch motor is obtained in step S2, specifically: the current flowing through the first group of wires is obtained, and the current flowing through the first group of wires is used as the current working current of the winch motor.

[0049] In step S3, specifically, if the current working current is higher than the preset current value, it means that the current winch motor is performing traction work through the steel rope. At this time, there is a load, and only the first group of wires needs to be powered to drive the winch motor to work, so that the winch motor can slowly retract the rope; if the current working current is lower than the preset current value, it means that the steel rope connected to the current winch motor is in a no-load state. At this time, the first group of wires and the second group of wires are powered at the same time, so that the winch motor has a higher working power, so that the winch motor can quickly retract the rope.

[0050] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0051] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0052] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A winch motor rope retraction control method, characterized in that: Pre-winding a first set of wires and a second set of wires on a stator of a same winch motor comprises the following steps: S1, determine whether the current winch motor is in the rope retracting state; If yes, control the power supply to be electrically connected to the first group of wires, the winch motor drives the steel rope to be retracted, and the process goes to step S2; otherwise, the process returns to step S1; S2, obtaining the current working current of the winch motor; S3, determining whether the current working current is higher than the preset current value; If yes, continue to control the power supply to be electrically connected to the first set of wires, and the winch motor drives the steel rope to slowly retract the rope; otherwise, control the power supply to be electrically connected to the second set of wires, and the winch motor drives the steel rope to quickly retract the rope; S4, determine whether the winch motor is in place to retract the rope; If yes, the winch motor stops working; otherwise, return to step S2.

2. The winch motor rope collection control method according to claim 1, characterized in that: In step S3, if the current working current is lower than the preset current value, the power supply is controlled to be disconnected from the first group of wires, and the power supply is controlled to be electrically connected to the second group of wires; The internal resistance of the first group of wires is greater than the internal resistance of the second group of wires.

3. The winch motor rope collection control method according to claim 2, characterized in that: The cross-sectional area of ​​the first group of wires is smaller than the cross-sectional area of ​​the second group of wires.

4. The winch motor rope collection control method according to claim 1, characterized in that: In step S3, if the current working current is lower than the preset current value, the power supply is continuously controlled to be electrically connected to the first set of wires, and the power supply is controlled to be electrically connected to the second set of wires.

5. The winch motor rope collection control method according to claim 1, characterized in that: The power supply is electrically connected to the first group of wires through a first electromagnetic switch, the power supply is electrically connected to the second group of wires through a second electromagnetic switch, and the control end of the first electromagnetic switch and the control end of the second electromagnetic switch are both electrically connected to a controller.

6. The winch motor rope collection control method according to claim 5, characterized in that: The first electromagnetic switch and the second electromagnetic switch are both relays or contactors.

7. The winch motor rope collection control method according to claim 5, characterized in that: A first current sensor is electrically connected between the first electromagnetic switch and the first group of wires, a second current sensor is electrically connected between the second electromagnetic switch and the second group of wires, and both the first current sensor and the second current sensor are electrically connected to the controller.

8. The winch motor rope collection control method according to claim 7, characterized in that: The first current sensor and the second current sensor are both shunt plates or direct current transformers.

9. The winch motor rope collection control method according to claim 7, characterized in that: The first electromagnetic switch, the second electromagnetic switch, the first current sensor and the second current sensor are all fixed on a circuit board.

10. The winch motor rope collection control method according to claim 1, characterized in that: The winch motor is a brushless motor.

Images