CN217627320U - Electric capstan and all-terrain vehicle - Google Patents
Electric capstan and all-terrain vehicle Download PDFInfo
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- CN217627320U CN217627320U CN202221410544.1U CN202221410544U CN217627320U CN 217627320 U CN217627320 U CN 217627320U CN 202221410544 U CN202221410544 U CN 202221410544U CN 217627320 U CN217627320 U CN 217627320U
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Abstract
The application provides an electric capstan, including capstan winch motor and be used for protecting capstan winch motor's capstan winch motor protection device, electric capstan winch is connected with the power module electricity, and capstan winch motor protection device includes: the capstan winch motor control section is connected between the positive pole of the power supply module and the capstan winch motor, and the capstan winch motor control section comprises: the voltage drop detection module is connected between the anode of the power supply module and the winch motor and is used for detecting the current voltage drop between the anode of the power supply module and the winch motor; and the comparison output module is connected with the voltage drop detection module, and when the current voltage drop is greater than a preset voltage drop threshold value, the electric connection between the winch motor and the power supply module is disconnected. The present application further provides an all-terrain vehicle. The application provides a capstan winch motor protection device receives that ambient temperature influences lowly, control accuracy is high, protectiveness is good, can effectively solve the problem that the capstan winch motor that exists among the prior art easily burns out.
Description
Technical Field
The application relates to the technical field of electric winches, in particular to an electric winch and an all-terrain vehicle.
Background
When the electric winch works, the operation is carried out by observing the working condition of the winch subjectively by an operator, however, when the user actually uses the winch to pull an object, the tension parameter cannot be accurately controlled, and the motor is easily damaged due to exceeding the rated tension of the winch motor; and the capstan winch motor belongs to the short-term work system, and most users are unclear the correct use method of capstan winch motor, let the capstan winch work of circular telegram for a long time when using the capstan winch, cause the capstan winch motor temperature rise too high, lead to the capstan winch to damage.
The existing winch motor overload protection usually adopts a mechanical bimetallic strip for overload protection. Bimetallic strip is a composite material composed of two or more metals or other materials having suitable properties. The bimetallic strip is also called as a thermal bimetallic strip, and because the thermal expansion coefficients of all component layers are different, when the temperature changes, the deformation of the active layer is larger than that of the passive layer, so that the whole bimetallic strip can bend towards one side of the passive layer, and the curvature of the composite material changes to generate deformation. According to the working principle of the bimetallic strip, the bimetallic strip is used as a restorable fuse and is connected in series in a winch working circuit, when the bimetallic strip generates temperature rise in case of overcurrent, the circuit is disconnected when the temperature reaches a certain degree, and the bimetallic strip can be automatically restored after the temperature is reduced, so that the overload protection of a winch motor is realized.
However, the bimetal itself is greatly affected by the external temperature due to its operating principle. Secondly, the control precision is low because the disconnection is carried out by the characteristics of the material. Meanwhile, due to the problem of the structure of the bimetallic strip, the protection performance of the overload protection device is poor, the overload protection device is connected in series in a circuit at a high risk, and short circuit is easily caused.
Therefore, it is necessary to provide a technical solution to solve the problem that the winch motor is easy to burn out in the prior art.
Disclosure of Invention
The utility model provides a receive ambient temperature to influence low, the control accuracy is high, the winch motor protection device that protectiveness is good, solve the problem that the winch motor that exists easily burns out among the prior art.
Based on the above-mentioned purpose, this application provides an electric capstan, including capstan motor and be used for protecting capstan motor protection device of capstan motor, electric capstan is connected with the power module electricity, capstan motor protection device includes:
capstan winch motor control portion connects between power module's positive pole and capstan winch motor, and capstan winch motor control portion includes:
the voltage drop detection module is connected between the anode of the power supply module and the winch motor and is used for detecting the current voltage drop between the anode of the power supply module and the winch motor;
and the comparison output module is connected with the voltage drop detection module, and when the current voltage drop is greater than a preset voltage drop threshold value, the electric connection between the winch motor and the power supply module is disconnected.
Further, the capstan winch motor includes first terminal and second terminal for be connected with the power module electricity, capstan winch motor protection device still includes:
the winch motor driving part comprises a first relay, the first wiring terminal is connected with the positive electrode of the power supply module through the first relay, and the first relay is used for controlling the conduction of the first wiring terminal and the positive electrode of the power supply module;
the second wiring terminal is electrically connected with the negative electrode of the power supply module;
the first relay and the positive pole of the power supply module at least comprise two potential detection points, the voltage drop detection module respectively detects potential values of the two potential detection points to obtain current voltage drop between the two potential detection points, and when the current voltage drop is larger than a preset voltage drop threshold value, the comparison output module controls the first relay to disconnect the electric connection between the first binding post and the positive pole of the power supply module.
Further, the first relay comprises a first electromagnetic mechanism and a first contact system, wherein the first contact system comprises a first movable contact, a first normally closed contact and a first normally open contact;
the first movable contact is electrically connected with a first wiring terminal of the winch motor, the first normally closed contact is electrically connected with a negative electrode of the power supply module, the first normally open contact is electrically connected with a positive electrode of the power supply module, the input end of the first electromagnetic mechanism is electrically connected with the positive electrode of the power supply module through the comparison output module, and the output end of the first electromagnetic mechanism is electrically connected with the negative electrode of the power supply module;
when the comparison output module controls the first electromagnetic mechanism to be electrified, the first movable contact is attracted with the first normally open contact, and the first binding post is conducted with the anode of the power supply module;
when the comparison output module controls the first electromagnetic mechanism to be powered off, the first movable contact resets and is attracted with the first normally closed contact, and the first binding post is disconnected with the positive pole of the power supply module.
Further, the capstan motor driving part further includes:
the single-pole double-throw switch is used for controlling the conversion of the operation direction of the winch motor;
the second relay comprises a second electromagnetic mechanism and a second contact system, wherein the second contact system comprises a second movable contact, a second normally closed contact and a second normally open contact;
the second movable contact is electrically connected with a second binding post of the winch motor, the second normally closed contact is electrically connected with the negative electrode of the power supply module, and the second normally open contact is electrically connected with the positive electrode of the power supply module;
the input ends of the first electromagnetic mechanism and the second electromagnetic mechanism are respectively electrically connected with the anode of the power supply module through the single-pole double-throw switch, and the output end of the second electromagnetic mechanism is electrically connected with the cathode of the power supply module.
Further, the winch motor control unit further includes: the device comprises a first port, a second port and a control switch module;
the first port is electrically connected with the anode of the power supply module;
the second port is electrically connected with the first relay and used for controlling the state switching of the first relay;
the voltage drop detection module comprises a first potential detection unit and a second potential detection unit, which are respectively electrically connected with the two potential detection points and used for detecting potential values of the two potential detection points;
the comparison output module is used for calculating the current voltage drop according to the potential values of the two potential detection points, comparing the current voltage drop with a preset voltage drop threshold value, and outputting a first control signal when the current voltage drop is lower than the preset voltage drop threshold value;
the control switch module receives a first control signal and is used for controlling the conduction between the first port and the second port;
when the first port and the second port are conducted, the first relay is kept closed, and the first binding post is electrically connected with the anode of the power supply module;
when the first port and the second port are disconnected, the first relay disconnects the electrical connection between the first binding post and the positive electrode of the power supply module.
Furthermore, the first potential detection unit and the second potential detection unit have the same structure, the first potential detection unit comprises a first resistor and a second resistor which are connected in series, and further comprises a third resistor and a first capacitor, the third resistor and the first capacitor are connected in parallel, one end of the third resistor and one end of the first capacitor are grounded together, and the other end of the third resistor and one end of the first capacitor are connected to a connection point between the first resistor and the second resistor together.
Further, the control switch module includes: comprises a triode and a P-channel field effect transistor;
the base electrode of the triode is used for receiving a first control signal, the collector electrode of the triode is electrically connected with the anode of the power supply module through the first port, and the emitter electrode of the triode is grounded;
the grid electrode of the P-channel field effect transistor is electrically connected with the collector electrode of the triode, the source electrode of the P-channel field effect transistor is electrically connected with the anode of the power supply module through the first port, and the drain electrode of the P-channel field effect transistor is electrically connected with the second port.
Further, the winch motor control unit further includes: and the voltage stabilizer is connected between the first port and the comparison output module in series and is used for providing a stabilized voltage power supply for the comparison output module.
Further, the winch motor control unit further includes: and one end of the transient diode is connected with the comparison output module through the voltage stabilizer, and the other end of the transient diode is grounded.
The application also provides an all-terrain vehicle, which comprises a power supply module, and the all-terrain vehicle also comprises the electric winch, wherein the power supply module is electrically connected with the electric winch and supplies power to the electric winch.
To sum up, this application reflects the input current size of capstan winch motor through detecting the voltage drop between power module positive pole and the capstan winch motor to through setting for the voltage drop threshold value, when making present voltage drop be higher than predetermineeing the voltage drop threshold value, capstan winch motor protection device breaks off the connection between capstan winch motor and the power module, thereby provides overload protection for the capstan winch motor.
And compare with prior art, the capstan winch motor protection device that this application provided receives ambient temperature to influence lowly, control accuracy is high, protectiveness is good, has effectively solved the problem that the capstan winch motor that exists easily burns out among the prior art.
Drawings
FIG. 1 is a schematic view of a winch motor protection arrangement provided herein;
FIG. 2 is a schematic view of the winch motor protection device provided by the present application operating in a motor reverse rotation state;
FIG. 3 is a schematic view illustrating the operation of the protection device for the capstan motor provided by the present application in a forward rotation state of the motor;
FIG. 4 is a schematic diagram illustrating the operation of the protection device for a winch motor according to the present application for providing overload protection in a forward rotation state of the motor;
fig. 5 is a schematic diagram of a winch motor control unit provided in the present application.
Detailed Description
The application provides an electric capstan, including capstan motor and be used for protecting capstan motor's capstan motor protection device 100, solve the problem that the capstan motor that exists among the prior art easily burns out.
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the drawings show alternative implementations of the disclosure, it should be understood that the disclosure can be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In order to solve the problem that the winch motor is easy to burn out, on one hand, when the winch motor rotates forwards, the winch motor needs to be prevented from being in a locked-rotor state, namely, the actual load is prevented from being larger than or equal to the rated load specified by the winch motor as far as possible. On the other hand, need avoid the long-time circular telegram work of capstan winch, cause the too high temperature rise of capstan winch motor.
When the winch motor rotates, a rotating magnetic field formed by a stator winding in the winch motor drags the rotor to rotate, and a magnetic field generated by induction current in the rotor generates counter electromotive force in the direction opposite to that of the power supply electromotive force in the stator winding, which is a main part of the voltage consumed by the winch motor. When the winch motor is locked, the stator winding and the rotor do not move relatively, the counter electromotive force disappears, and the power supply only acts on the impedance and the inductive reactance of the stator winding, so that the current of the stator winding is increased when the winch motor is locked.
On the other hand, the temperature of the capstan motor increases, the impedance of the stator winding increases with the temperature, the heat generation power of the capstan motor increases, the input power of the capstan motor increases if the output power of the capstan motor is not changed, and the input current of the capstan motor increases if the voltage is not changed.
Based on the above description, the overload protection of the winch motor can be realized by detecting the input current of the winch motor and controlling the winch motor according to the detection result. Compared with the mode of adopting a thermal bimetallic strip in the prior art, the mode has the advantages of obviously less influence of the external temperature and higher control precision.
When the electric winch works, the electric winch is electrically connected with the power supply module, and the power supply module supplies power to the electric winch. As an alternative implementation, the power supply module may be provided in the electric winch or outside the electric winch.
As an alternative implementation manner, the protection device 100 for the winch motor provided by the present application reflects the magnitude of the input current of the winch motor by detecting the voltage drop between the positive electrode of the power supply module and the winch motor.
As shown in fig. 1, the present application provides a winch motor protection device 100 including a winch motor driving part 11 and a winch motor control part 12. The winch motor control 12 may be used to detect the voltage drop and provide overload protection for the winch motor. The winch motor comprises a first binding post 21 and a second binding post 22, and is used for being electrically connected with the power supply module to drive the winch motor to work.
The winch motor driving unit 11 is configured to control the winch motor to rotate forward or backward. The winch motor driving unit 11 includes a single-pole double-throw switch 111, a first relay 112, and a second relay 113. The single-pole double-throw switch 111 is used for controlling the winch motor to change the operation direction and comprises a movable end 1111, a first immovable end 1112 and a second immovable end 1113, the movable end 1111 is electrically connected with the positive pole of the power supply module, when the movable end 1111 is connected with the first immovable end 1112, the winch motor driving portion 11 controls the winch motor to rotate forwards, and when the movable end 1111 is connected with the second immovable end 1113, the winch motor driving portion 11 controls the winch motor to rotate backwards.
As an alternative implementation, the first relay 112 and the second relay 113 may be electromagnetic relays with the same structure. An electromagnetic relay includes an electromagnetic mechanism and a contact system. The contact system comprises a moving contact, a normally closed contact and a normally open contact. In the electromagnetic relay, when the relay is not energized, a contact in an open state is called a normally open contact, and a contact in an open state is called a normally closed contact. When the electromagnetic mechanism is powered on, the electromagnetic mechanism generates electromagnetic force to make the moving contact and the normally open contact attract each other, and when the electromagnetic mechanism is powered off, the moving contact resets and the normally closed contact attract each other.
As shown in fig. 1, the first relay 112 includes a first electromagnetic mechanism 1121 and a first contact system 1122, wherein the first contact system 1122 includes a first movable contact 1122a, a first normally closed contact 1122b, and a first normally open contact 1122c.
The first movable contact 1122a is electrically connected to the first terminal 21 of the winch motor, the first normally closed contact 1122b is electrically connected to the negative electrode of the power supply module, and the first normally open contact 1122c is electrically connected to the positive electrode of the power supply module. An input end of the first electromagnetic mechanism 1121 is electrically connected to a positive electrode of the power supply module through the winch motor control unit 12 and the first fixed end 1112 of the single-pole double-throw switch 111, and an output end of the first electromagnetic mechanism 1121 is electrically connected to a negative electrode of the power supply module.
The second relay 113 includes a second electromagnetic mechanism 1131 and a second contact system 1132, wherein the second contact system 1132 includes a second movable contact 1132a, a second normally closed contact 1132b, and a second normally open contact 1132c.
The second movable contact 1132a is electrically connected to the second terminal 22 of the capstan motor, the second normally closed contact 1132b is electrically connected to the negative electrode of the power supply module, and the second normally open contact 1132c is electrically connected to the positive electrode of the power supply module. The input end of the second electromagnetic mechanism 1131 is electrically connected to the positive electrode of the power supply module through the second stationary end 1113 of the single-pole double-throw switch 111, and the output end of the second electromagnetic mechanism 1131 is electrically connected to the negative electrode of the power supply module.
As is apparent from the above description, when the electromagnetic mechanisms of the first relay 112 and the second relay 113 are not energized, the first terminal 21 is electrically connected to the negative electrode of the power supply module via the first normally-closed contact 1122b, and the second terminal 22 is electrically connected to the negative electrode of the power supply module via the second normally-closed contact 1132b, and at this time, the winch motor is in the non-operating state.
As shown in fig. 2, it shows an operation state of the winch motor driving section 11 in a reverse rotation state of the winch motor. When the moving end 1111 of the single-pole double-throw switch 111 is electrically connected to the second stationary end 1113, the second electromagnetic mechanism 1131 is energized to generate an electromagnetic force, so that the second moving contact 1132a is attracted to the second normally open contact 1132c. At this time, the second terminal 22 of the winch motor is connected to the positive electrode of the power supply module, the first terminal 21 is electrically connected to the negative electrode of the power supply module, and the winch motor is in a reverse rotation state.
As shown in fig. 3, it shows an operation state of the winch motor driving part 11 in the normal rotation state of the winch motor. When the moving end 1111 of the single-pole double-throw switch 111 is electrically connected to the first fixed end 1112, the winch motor control unit 12 detects a voltage drop in real time, and determines whether the current voltage drop is greater than a preset voltage drop threshold, if the current voltage drop is lower than the preset voltage drop threshold, the winch motor control unit 12 outputs a voltage to the input end of the first electromagnetic mechanism 1121, and the first electromagnetic mechanism 1121 is energized to generate an electromagnetic force, so that the first moving contact 1122a is attracted to the first normally open contact 1122c. At this time, the first terminal 21 of the winch motor is communicated with the positive electrode of the power supply module, the second terminal 22 is electrically connected with the negative electrode of the power supply module, and the winch motor is in a forward rotation state.
In the embodiment of the present application, the winch motor protection device 100 can realize the winding and unwinding functions of the winch by controlling the motor to rotate forward and backward. As an alternative implementation manner, the present application further provides a protection device for a winch motor only providing a wire winding function, which includes a structure of a driving portion of the winch motor similar to that shown in fig. 1, except that the second relay 113 is not included, and the second terminal 22 of the winch motor is electrically connected to the negative electrode of the power supply module.
Fig. 4 shows an operation schematic diagram of the winch motor protection device provided by the embodiment of the present application for providing overload protection in a forward rotation state of the motor. If the current voltage drop is higher than the preset voltage drop threshold, the winch motor control unit 12 stops outputting the voltage to the input end of the first electromagnetic mechanism 1121, the first electromagnetic mechanism 1121 is powered off, the first movable contact 1122a resets to be attracted to the first normally closed contact 1122b, at this time, the first terminal 21 and the second terminal 22 of the winch motor are both connected to the negative electrode of the power supply module, and the winch motor is powered off and stops working.
As shown in fig. 5, as an alternative implementation manner, the winch motor control unit 12 provided in the embodiment of the present application includes: a first port 121, a second port 122, a pressure drop detection module 123, and a comparison output module 124.
The first port 121 is connected to the positive electrode of the power supply module through the first stationary end 1112 of the single-pole double-throw switch 111, and when the moving end 1111 of the single-pole double-throw switch 111 is electrically connected to the first stationary end 1112, the power supply module supplies power to the capstan motor control unit 12. Second port 122 is electrically connected to an input of first electromagnetic mechanism 1121.
At least two potential detection points are included between the positive electrode of the power supply module and the first normally-open contact 1122c of the first relay 112.
The voltage drop detection module 123 is connected between the positive electrode of the power supply module and the winch motor, and includes a first potential detection unit 1231 and a second potential detection unit 1232, where the first potential detection unit 1231 and the second potential detection unit 1232 are electrically connected to the two potential detection points respectively, and are configured to detect potential values of the two potential detection points.
As an alternative implementation manner, the first potential detecting unit 1231 and the second potential detecting unit 1232 have the same structure. Taking the first potential detecting unit 1231 as an example, the first potential detecting unit includes a first resistor 1231a and a second resistor 1231b connected in series, and further includes a third resistor 1231c and a first capacitor 1231d, where the third resistor 1231c is connected in parallel with the first capacitor 1231d, one end of the third resistor 1231c and one end of the first capacitor 1231d are commonly grounded, and the other end is commonly connected to a connection point between the first resistor 1231a and the second resistor 1231 b.
In this embodiment, the comparison output module 124 is connected to the voltage drop detection module 123, and is configured to calculate a current voltage drop according to potential values of the two potential detection points, and determine whether the current voltage drop between the two potential detection points is greater than a preset voltage drop threshold, if the current voltage drop is lower than the preset voltage drop threshold, the comparison output module 124 outputs a first control signal, the first control signal is used to control the conduction between the first port 121 and the second port 122, an anode of the power supply module outputs a voltage to an input end of the first electromagnetic mechanism 1121 through the first port 121 and the second port 122, and the first electromagnetic mechanism 1121 is powered on to generate an electromagnetic force, so that the first movable contact 1122a is attracted to the first normally open contact 1122c. At this time, the first terminal 21 of the winch motor is communicated with the positive electrode of the power supply module, the second terminal 22 is electrically connected with the negative electrode of the power supply module, and the winch motor is in a forward rotation state.
As an optional implementation manner, if the current voltage drop is higher than the preset voltage drop threshold, the comparison output module 124 stops outputting the first control signal, so that the first port 121 and the second port 122 are disconnected, the voltage output by the positive electrode of the power supply module cannot be transmitted to the input end of the first electromagnetic mechanism 1121, the first electromagnetic mechanism 1121 is powered off, the first movable contact 1122a is reset to be attracted to the first normally closed contact 1122b, at this time, the first terminal 21 and the second terminal 22 of the winch motor are both connected to the negative electrode of the power supply module, and the winch motor is powered off and stops working.
Two potential detection points are arranged between the positive electrode of the power supply module and the first normally-open contact 1122c, and the input current of the winch motor is reflected by detecting the voltage drop between the two potential detection points. The input current of the winch motor is limited by setting a voltage drop threshold, and when the voltage drop between two potential detection points is higher than a preset voltage drop threshold, the connection between the winch motor and the power supply module is disconnected through the winch motor control part 12, so that overload protection is provided for the winch motor.
As shown in fig. 5, as an alternative implementation manner, the comparison output module 124 provided in the embodiment of the present application includes a processing unit 1241. The processing unit 1241 is configured to receive the potential values of the two potential detecting points obtained by the first potential detecting unit 1231 and the second potential detecting unit 1232, thereby obtaining a current voltage drop between the two potential detecting points, compare the current voltage drop with a preset voltage drop threshold, and output a first control signal if the current voltage drop is lower than the preset voltage drop threshold, where the first control signal is used to control the conduction between the first port 121 and the second port 122. As an alternative implementation manner, the PIC12F675 chip is adopted as the processing unit 1241 in the embodiment of the present application.
Specifically, as shown in fig. 5, in the embodiment of the present application, the processing unit 1241 is electrically connected to the first potential detecting unit 1231 and the second potential detecting unit 1232 of the voltage drop detecting module 123, respectively, and is configured to receive the potential values of the two potential detecting points obtained by the first potential detecting unit 1231 and the second potential detecting unit 1232.
The processing unit 1241 is further configured to receive a preset voltage drop threshold, and as an optional implementation manner, the voltage drop threshold may be set by externally connecting an adjustable resistor 1242 by using a voltage division connection method. The voltage drop threshold is set by adjusting the effective resistance value of the access circuit of the adjustable resistor 1242 according to the embodiment of the application.
The processing unit 1241 is electrically connected to the positive electrode of the power supply module to supply power to the chip. The processing unit 1241 is further configured to compare the current voltage drop with a preset voltage drop threshold, and output a first control signal according to the comparison result.
As an alternative implementation manner, the winch motor control portion 12 further includes a control switch module 125 disposed between the first port 121 and the second port 122, and the first control signal is used for controlling conduction of the control switch module 125.
As an alternative implementation manner, in the embodiment of the present application, the control switch module 125 includes a transistor 1251 and a field effect transistor 1252. The field effect transistor 1252 may be a P-channel field effect transistor, among others.
The base of the transistor 1251 is electrically connected to the processing unit 1241 for receiving the first control signal. The collector of the transistor 1251 is electrically connected to the positive terminal of the power supply module via the first port 121. The emitter of the transistor 1251 is grounded. In the embodiment of the present application, the transistor 1251 is used to amplify the first control signal.
The gate of the P-channel field effect transistor 1252 is electrically connected to the collector of the transistor 1251, the source of the P-channel field effect transistor 1252 is electrically connected to the anode of the power supply module via the first port 121, and the drain of the P-channel field effect transistor 1252 is electrically connected to the second port 122.
In the control switch module 125 provided in this embodiment of the application, when the base of the transistor 1251 receives the first control signal, the transistor 1251 is turned on, and at this time, the potential of the collector of the transistor 1251 is lowered, so that the gate-source voltage of the P-channel field effect transistor 1252 is smaller than the turn-on voltage of the P-channel field effect transistor 1252, the P-channel field effect transistor 1252 is turned on, and the power supply module outputs the voltage to the input end of the first electromagnetic mechanism 1121 through the second port 122. At this time, the first electromagnetic mechanism 1121 is energized to generate an electromagnetic force, so that the first movable contact 1122a and the first normally open contact 1122c are attracted, the first terminal 21 of the winch motor is communicated with the positive electrode of the power supply module, the second terminal 22 is electrically connected with the negative electrode of the power supply module, and the winch motor is in a forward rotation state.
When the current voltage drop between the two potential detection points is higher than the preset voltage drop threshold, the comparison output module 124 stops outputting the first control signal, and at this time, the triode 1251 is turned off, so that the gate-source voltage of the P-channel field effect transistor 1252 is higher than the turn-on voltage of the P-channel field effect transistor 1252, the P-channel field effect transistor 1252 is turned off, and the first port 121 and the second port 122 in the winch motor control unit 12 are disconnected. At this time, the first electromagnetic mechanism 1121 is powered off, the first movable contact 1122a is reset to be attracted to the first normally closed contact 1122b, so that the connection between the winch motor and the positive electrode of the power supply module is disconnected, and overload protection is provided for the winch motor.
As an optional implementation manner, the winch motor control unit 12 provided in this embodiment of the present application further includes a voltage regulator 126, which is connected in series between the processing unit 1241 and the positive electrode of the power supply module to provide a regulated voltage for the chip. In the embodiment of the present application, the voltage regulator 126 employs a three-terminal integrated voltage regulator 78L05, the three-terminal integrated voltage regulator 78L05 having three pins. An output pin of the three-terminal integrated regulator 78L05 is electrically connected with the processing unit 1241, a ground pin of the three-terminal integrated regulator 78L05 is grounded, and an input pin of the three-terminal integrated regulator 78L05 is electrically connected with the anode of the power supply module.
As an alternative implementation, in order to obtain optimal stability and transient response, a capacitor may be provided between the ground pin of the three-terminal integrated regulator 78L05 and the input pin of the three-terminal integrated regulator 78L05, and a capacitor may be provided between the ground pin of the three-terminal integrated regulator 78L05 and the output pin of the three-terminal integrated regulator 78L 05. The design parameters of the two capacitors are designed according to the working condition of the three-terminal integrated voltage regulator 78L 05.
As an optional implementation manner, the winch motor control unit 12 provided in the embodiment of the present application further includes a transient diode 127. In this embodiment, the transient diode 127 is a bidirectional transient diode, one end of the bidirectional transient diode is electrically connected to the processing unit 1241 through the voltage regulator 126, and the other end of the bidirectional transient diode is grounded, so as to provide a path with low impedance conduction for an instantaneous high current, bleed off the high current, clamp an abnormal high voltage at a safe level, and provide a safety protection for the comparison output module 124.
As an alternative implementation manner, a protection resistor 128 is connected in series between the positive electrode of the power supply module and the voltage regulator 126 to provide safety protection for the comparison output module 124.
To sum up, this application reflects the input current size of capstan winch motor through detecting the voltage drop between power module positive pole and the capstan winch motor to through setting for the voltage drop threshold value, when making present voltage drop be higher than predetermineeing the voltage drop threshold value, capstan winch motor protection device breaks off the connection between capstan winch motor and the power module, thereby provides overload protection for the capstan winch motor.
And compare with prior art, the capstan winch motor protection device that this application provided receives ambient temperature to influence lowly, control accuracy is high, protectiveness is good, has effectively solved the problem that the capstan winch motor that exists easily burns out among the prior art.
As an alternative implementation manner, an all-terrain vehicle is further provided in an embodiment of the present application, and includes a power supply module and an electric winch provided in an embodiment of the present application, where the power supply module is electrically connected to the electric winch and supplies power to the electric winch.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An electric capstan comprising a capstan motor and a capstan motor protection device for protecting said capstan motor, said electric capstan being electrically connected to a power supply module, said capstan motor protection device comprising:
a winch motor control part connected between the positive electrode of the power supply module and the winch motor,
the winch motor control part includes:
the voltage drop detection module is connected between the anode of the power supply module and the winch motor and is used for detecting the current voltage drop between the anode of the power supply module and the winch motor;
and the comparison output module is connected with the voltage drop detection module, and when the current voltage drop is greater than a preset voltage drop threshold value, the electric connection between the winch motor and the power supply module is disconnected.
2. The electric winch of claim 1, wherein the winch motor includes a first terminal and a second terminal for electrical connection with a power supply module, the winch motor protection device further comprising:
the winch motor driving part comprises a first relay, the first wiring terminal is connected with the positive pole of the power supply module through the first relay, and the first relay is used for controlling the conduction of the first wiring terminal and the positive pole of the power supply module;
the second binding post is electrically connected with the negative electrode of the power supply module;
the first relay and the positive pole of the power supply module at least comprise two potential detection points, the voltage drop detection module respectively detects potential values of the two potential detection points to obtain current voltage drop between the two potential detection points, and when the current voltage drop is larger than a preset voltage drop threshold value, the comparison output module controls the first relay to disconnect the electric connection between the first wiring terminal and the positive pole of the power supply module.
3. The electric winch of claim 2, wherein the first relay comprises a first electromagnetic mechanism and a first contact system comprising a first movable contact, a first normally closed contact, and a first normally open contact;
the first movable contact is electrically connected with a first wiring terminal of the winch motor, the first normally closed contact is electrically connected with a negative electrode of the power supply module, the first normally open contact is electrically connected with a positive electrode of the power supply module, the input end of the first electromagnetic mechanism is electrically connected with the positive electrode of the power supply module through the comparison output module, and the output end of the first electromagnetic mechanism is electrically connected with the negative electrode of the power supply module;
when the comparison output module controls the first electromagnetic mechanism to be electrified, the first movable contact is attracted with the first normally open contact, and the first binding post is conducted with the positive electrode of the power supply module;
when the comparison output module controls the first electromagnetic mechanism to be powered off, the first movable contact resets and is attracted with the first normally closed contact, and the first wiring terminal is disconnected with the positive electrode of the power supply module.
4. The electric capstan according to claim 3, wherein said capstan motor drive section further comprises:
the single-pole double-throw switch is used for controlling the winch motor to switch the running direction;
the second relay comprises a second electromagnetic mechanism and a second contact system, wherein the second contact system comprises a second movable contact, a second normally closed contact and a second normally open contact;
the second movable contact is electrically connected with a second binding post of the winch motor, the second normally closed contact is electrically connected with the negative electrode of the power supply module, and the second normally open contact is electrically connected with the positive electrode of the power supply module;
the input ends of the first electromagnetic mechanism and the second electromagnetic mechanism are respectively and electrically connected with the anode of the power supply module through the single-pole double-throw switch, and the output end of the second electromagnetic mechanism is electrically connected with the cathode of the power supply module.
5. The electric winch according to claim 2, wherein the winch motor control section further comprises: the device comprises a first port, a second port and a control switch module;
the first port is electrically connected with the positive electrode of the power supply module;
the second port is electrically connected with the first relay and used for controlling the state switching of the first relay;
the voltage drop detection module comprises a first potential detection unit and a second potential detection unit, which are respectively electrically connected with the two potential detection points and are used for detecting potential values of the two potential detection points;
the comparison output module is used for calculating the current voltage drop according to the potential values of the two potential detection points, comparing the current voltage drop with the preset voltage drop threshold value, and outputting a first control signal when the current voltage drop is lower than the preset voltage drop threshold value;
the control switch module receives the first control signal and is used for controlling the conduction between the first port and the second port;
when the first port and the second port are conducted, the first relay is kept closed, and the first binding post is electrically connected with the positive pole of the power supply module;
when the first port and the second port are disconnected, the first relay disconnects the electric connection between the first binding post and the positive pole of the power supply module.
6. The electric capstan according to claim 5, wherein said first potential detecting unit and said second potential detecting unit are identical in structure, said first potential detecting unit comprises a first resistor and a second resistor connected in series, and further comprises a third resistor and a first capacitor, said third resistor and said first capacitor are connected in parallel, one end of said third resistor and said first capacitor are connected to ground, and the other end of said third resistor and said first capacitor are connected to a connection point between said first resistor and said second resistor.
7. Electric winch according to claim 5, characterized in that said control switch module comprises: comprises a triode and a P-channel field effect transistor;
the base electrode of the triode is used for receiving the first control signal, the collector electrode of the triode is electrically connected with the positive electrode of the power supply module through the first port, and the emitter electrode of the triode is grounded;
the grid electrode of the P-channel field effect transistor is electrically connected with the collector electrode of the triode, the source electrode of the P-channel field effect transistor is electrically connected with the anode of the power supply module through the first port, and the drain electrode of the P-channel field effect transistor is electrically connected with the second port.
8. The electric winch of claim 5, wherein the winch motor control unit further comprises: and the voltage stabilizer is connected between the first port and the comparison output module in series and is used for providing a stabilized voltage power supply for the comparison output module.
9. The electric winch of claim 8, wherein the winch motor control unit further comprises: and one end of the transient diode is connected with the comparison output module through the voltage stabilizer, and the other end of the transient diode is grounded.
10. An all-terrain vehicle comprising a power supply module, characterized in that the all-terrain vehicle further comprises an electric winch according to any of claims 1 to 9, the power supply module being electrically connected to the electric winch for supplying power thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221410544.1U CN217627320U (en) | 2022-06-06 | 2022-06-06 | Electric capstan and all-terrain vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221410544.1U CN217627320U (en) | 2022-06-06 | 2022-06-06 | Electric capstan and all-terrain vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217627320U true CN217627320U (en) | 2022-10-21 |
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ID=83623574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221410544.1U Active CN217627320U (en) | 2022-06-06 | 2022-06-06 | Electric capstan and all-terrain vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217627320U (en) |
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2022
- 2022-06-06 CN CN202221410544.1U patent/CN217627320U/en active Active
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