Winch and safety device thereof

Abstract

The invention provides a safety device for a winch, which would not startle or otherwise easily impact the psychology of a user, so that the user can use the winch more safely. The safety device of a winch includes a power module, a detection module and a control module, and further includes a display driving module and a display module. The display driving module is electrically connected to the display module. The display driving module and the detection module are electrically connected to the power module. The power module, the detection module and the display driving module are electrically connected to the control module. The invention further provides a winch, further including a detection device and an expression device. The detection device is used for detecting the working load of a motor. The expression device is used for expressing the load according to the detection signal of the detection device.

Claims

1. A safety device of a winch, comprising: a power module; a detection module; a control module; a display driving module; and a display module; wherein the display driving module is electrically connected to the display module; the display driving module and the detection module are electrically connected to the power module; the power module, the detection module and the display driving module are electrically connected to the control module; wherein the control module is configured to convert a signal detected by the detection module into a control signal, and the control signal controls the display driving module to drive the display module to display; wherein the power module includes a voltage boosting unit, a first voltage reducing and stabilizing unit, and a second voltage reducing and stabilizing unit, wherein the first voltage reducing and stabilizing unit and the second voltage reducing and stabilizing unit are electrically connected to the voltage boosting unit, the first voltage reducing and stabilizing unit is electrically connected to the display driving module, the detection module and the control module are electrically connected to the second voltage reducing and stabilizing unit.

2. The safety device of a winch of claim 1, wherein the safety device further includes an alarm module, and the power module and the control module are electrically connected to the alarm module.

3. The safety device of a winch of claim 1, wherein the first voltage reducing and stabilizing unit, the display driving module and the display module are all arranged at a control handle of the winch.

4. The safety device of a winch of claim 1, wherein the safety device further includes an adjusting module, and the adjusting module is configured for setting an alarm threshold value of the control module.

5. The safety device of a winch of claim 1, wherein the control module is provided with a switching unit, and the switching unit is configured to selectively switch between two states.

6. A winch, comprising: a motor; a winch drum; a bracket; a detection device; and an expression device, wherein the motor and the winch drum are both connected to the bracket, and the motor is configured to drive the winch drum to rotate, wherein the detection device is configured to detect a working load of the motor, and the expression device is configured to display the working load according to a detection signal of the detection device; wherein the winch further includes a power module, wherein the expression device includes a control module, a display driving module and a display module, wherein the display driving module is electrically connected to the display module, the display driving module and the detection device are respectively electrically connected to the power module, and the power module, the detection device and the display driving module are respectively electrically connected to the control module, wherein the control module is configured to convert a signal detected by the detection module into a control signal, and the control signal controls the display driving module to drive the display module to display; wherein the expression device includes a first circuit board and a second circuit board, the first circuit board is arranged in a control box of the winch, and the second circuit board is arranged at a control handle of the winch, wherein the first circuit board is provided with a voltage boosting unit, a second voltage reducing and stabilizing unit and the control module, and the second circuit board is provided with a first voltage reducing and stabilizing unit, the display driving module and the display module.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a block diagram of a safety device of a winch according to the invention.

(2) FIG. 2 is a circuit schematic diagram of a first part of a safety device of a winch according to the invention.

(3) FIG. 3 is a circuit schematic diagram of a second part of a safety device of a winch according to the invention.

(4) FIG. 4 is another circuit schematic diagram of a second part of a safety device of a winch according to the invention.

(5) FIG. 5 is a circuit schematic diagram of a detection module of a safety device of a winch according to the invention.

(6) FIG. 6 is another circuit schematic diagram of a detection module of a safety device of a winch according to the invention.

(7) FIG. 7 is a schematic structural diagram of a winch according to the invention.

(8) FIG. 8 is another schematic structural diagram of a winch according to the invention.

(9) Wherein the following reference designators correspond to the following structures, 1. motor, 2. winch drum, 3. bracket, 4. control box, 5. control handle, 6. power supply wire, 7. hall current sensor, 8. first circuit board, 9. display module, 10. contactor, and 11. connector.

DETAILED DESCRIPTION OF THE INVENTION

(10) The present invention is further described in detail as below.

(11) Embodiment 1

(12) The safety device of a winch includes a power module, a detection module and a control module, and further includes a display driving module and display module 9. The display driving module is electrically connected to the display module 9. The display driving module and the detection module are respectively electrically connected to the power module. The power module, the detection module and the display driving module are respectively electrically connected to the control module. The control module is used for converting the signals detected by the detection module into control signals, which are used to control the display driving module to drive display module 9 to display.

(13) The safety device further includes an alarm module, and the power module and the control module are respectively electrically connected to the alarm module.

(14) The power module includes a voltage boosting unit, a first voltage reducing and stabilizing unit, and a second voltage reducing and stabilizing unit. The first voltage reducing and stabilizing unit, and the second voltage reducing and stabilizing unit are respectively electrically connected to the voltage boosting unit. The first voltage reducing and stabilizing unit is electrically connected to the display driving module. The detection module, and the control module are respectively electrically connected to the second voltage reducing and stabilizing unit.

(15) The first voltage reducing and stabilizing unit, the display driving module, and display module 9 are all arranged at control handle 5 of the winch.

(16) The safety device further includes an adjusting module, which is used for setting an alarm threshold value of the control module.

(17) The control module is provided with a switching unit, which is used for the control module to selectively switch between two states.

(18) In this embodiment, the safety device of the winch of the present invention can be roughly divided into two parts, namely a first part and a second part. The first part is configured to be arranged on the winch, and the second part is configured to be arranged at a control handle of the winch.

(19) As shown in FIG. 2, the first part includes a power module, a control module, an adjusting module and an alarm module. The control module is mainly composed of a single-chip microcomputer U6. The switching unit is composed of resistor R30 and resistor R27. One end of resistor R30 may be vacant or electrically connected to the power supply end of the power module. The power supply end, for example, the second voltage reduction and voltage stabilization unit, is capable of supplying a power supply voltage of 5V. The other end of resistor R30 is electrically connected to one end of resistor R27 to form a common end, and the common terminal is electrically connected to pin 4 of single-chip microcomputer U6. The other end of resistor R27 is grounded. The pin 4 is controlled by vacating or adding a voltage to one end of resistor R27, so that the function of switching is realized. The adjusting module is mainly composed of adjustable resistor VR1, which is adjusted to change the level of pin 2 of single-chip microcomputer U6, so that an alarm threshold value of the control module is set. The alarm module is mainly composed of a light emitting diode, loudspeaker BZ1 and transistor Q1. The alarm module can give a sound and light alarm. The second voltage reducing and stabilizing unit is mainly composed of three-terminal integrated voltage stabilizer IC4. The second voltage reducing and stabilizing unit can supply a power supply voltage of 5V. The boosting unit is mainly composed of boost converter U3 and is used to raise the power supply voltage of the front end to 20V. In order to obtain a better power supply quality, the power supply module further includes an anti-reversal unit, a filtering unit and an anti-impact unit. The anti-reversal unit is mainly realized by diode D1, the filtering unit is mainly realized by capacitor C17, and the anti-impact unit is mainly realized by diode D6.

(20) The first part may be manufactured on a circuit board, which is called a first circuit board. In this embodiment, the detection module is mainly composed of a hall current sensor. The first circuit board is provided with an interface electrically connected to the hall current sensor, and the circuit principle diagram of the interface is shown in FIG. 5. In FIG. 5, the signal obtained by the interface is transmitted to pin 3 of single chip microcomputer U6. Alternatively, the detection module may also be composed of other structures. For instance, as shown in FIG. 6, the detection module is provided on the basis of resistor R38 and the resistance type detection module is formed around resistor R38.

(21) One embodiment of the second part is shown in FIG. 3 and includes a first voltage reducing and stabilizing unit, a display driving module and a display module. The first voltage reducing and stabilizing unit is composed of a three-end integrated voltage stabilizer IC1 and may supply a power supply voltage of 5V. The display driving module is mainly composed of driver U2 and is used to drive the display module to display according to a digital signal output from pin 7 of single chip microcomputer U6. The display module is composed of two eight-bit nixie tubes and thus has features of a low energy consumption, a low delay, stability and reliability.

(22) Another embodiment of the second part is shown in FIG. 4, and the main differences between this embodiment and the second part shown in FIG. 3 are provided as below. The input end of the first voltage reducing and stabilizing unit is connected to the storage battery, which supplies a voltage of 12V to the input end. The voltage of 12V is then reduced through the first voltage reducing and stabilizing unit, so that a power supply voltage of 5V is supplied. In this way, it is unnecessary to arrange a separate power line to the control handle, because the existing power line in the control handle in the prior art may be shared as the power line connected to the input end of the first voltage reducing and stabilizing unit. Furthermore, a second part of FIG. 4 is provided with diode D7 to prevent impacts, and diode D7 plays a role in impact resistance.

(23) Further, the display module may have multiple bits, for instance, the display module in FIG. 4 is composed of five eight-bit nixie tubes, so that more bits of data are expressed. Accordingly, the display driving module provides a driver capable of driving the five eight-digit nixie tubes.

(24) The second part may be manufactured on a circuit board, which is called as a second circuit board. The second circuit board is arranged at a control handle of the winch.

(25) The control module converts a signal detected by the detection module into a control signal, and the conversion may be realized by looking up a two-dimensional table. The two-dimensional table obtains load values or pull force values corresponding to the signals detected by the detection module under different loads through a test. The load value or the pull force value may be set as codes. In this way, the signal values detected by the detection module are set as one dimension while the codes are set as the other dimension, so as to form a two-dimensional table, which is then stored in the control module. According to the signal values detected by the detection module, the control module can obtain corresponding codes by looking up the two-dimensional table. The display driving module stores display values corresponding to the codes. If the codes are sent to the display driving module, the display driving module drives the display module to display corresponding display values, and the display values represent load values or pull force values. Alternatively, other conversion modes may be adopted herein, such as calculation through formulas. But in general, the conversion mode of looking up the two-dimensional table requires low operation and storage capacities of the control module, and has a fast response, and thus has an advantage of a high real-time capability.

(26) Embodiment 2

(27) A winch of the present invention includes motor 1, winch drum 2, and bracket 3. Motor 1 and winch drum 2 are both connected to bracket 3. Motor 1 is used for driving winch drum 2 to rotate. The winch further includes a detection device and an expression device. The detection device is used for detecting the working load of motor 1. The expression device is used for expressing the load according to the detection signal of the detection device.

(28) The detection device adopts a shunt resistor for current-shunting and sampling, so as to monitor the working current of the motor. For example, the current obtained through shunt resistor R38 in FIG. 6 changes along with the load change of the motor 1. If the expression device adopts a bulb, the current obtained through shunt resistor R38 is loaded on the bulb, the brightness of the bulb changes along with the current. In this way, the brightness and darkness changes of the bulb form an expression of the load, so as to provide a reference of the load change for the user.

(29) Embodiment 3

(30) A winch of the present invention adopts the safety device of the winch of Embodiment 1.

(31) A winch of the present invention includes motor 1, winch drum 2, and bracket 3. Motor 1 and winch drum 2 are both connected to bracket 3. Motor 1 is used for driving winch drum 2 to rotate. The winch further includes a detection device and an expression device. The detection device is used for detecting the working load of motor 1. The expression device is used for expressing the load according to the detection signal of the detection device.

(32) The winch further includes a power module, and the expression device includes a control module, a display driving module and display module 9. The display driving module is electrically connected to display module 9. The display driving module and the detection device are respectively electrically connected to the power module. The power module, the detection device and the display driving module are respectively electrically connected to the control module. The control module is used for converting the signals detected by the detection module into control signals, which are used to control the display driving module to drive display module 9 to display.

(33) The winch further includes an alarm module, and the power module and the control module are respectively electrically connected to the alarm module.

(34) The power module includes a voltage boosting unit, a first voltage reducing and stabilizing unit, and a second voltage reducing and stabilizing unit. The first voltage reducing and stabilizing unit, and the second voltage reducing and stabilizing unit are respectively electrically connected to the voltage boosting unit. The first voltage reducing and stabilizing unit is electrically connected to the display driving module. The detection module, and the control module are respectively electrically connected to the second voltage reducing and stabilizing unit.

(35) The first voltage reducing and stabilizing unit, the display drive module, and display module 9 are all arranged at control handle 5 of the winch.

(36) The expression device includes first circuit board 8 and a second circuit board, first circuit board 8 is arranged in control box 4 of the winch, and the second circuit board is arranged at the control handle of the winch. First circuit board 8 is provided with a voltage boosting unit, a second voltage reducing and stabilizing unit, and a control module. The second circuit board is provided with a first voltage reducing and stabilizing unit, a display driving module, and display module 9.

(37) The electrical signals between control handle 5 and control box 4 are transmitted through cables. Control box 4 is provided with connector 11, and contactor 10 is arranged in control box 4. The input end of contactor 10 is connected to a power supply, such as a storage battery. The output end of contactor 10 is connected to motor 1, and control handle 5 makes motor 1 stop, rotate forwards or rotate reversely through a control contactor.

(38) The power supply module gets electricity from a power supply, the input end of contactor 10 or the output end of contactor 10.

(39) The winch further includes an adjusting module, which is used for setting an alarm threshold value of the control module.

(40) The control module is provided with a switching unit, which is used for the control module to selectively switch between two states.

(41) The structures of first circuit board 8 and the second circuit board are the same as that of Embodiment 1.

(42) In this embodiment, the detection module is mainly composed of hall current sensor 7, which is arranged around power supply line 6 in a sleeved mode, wherein power supply line 6 is used for transmitting power to motor 1. Hall current sensor 7 is also located in control box 4. Hence, hall current sensor 7 is well protected, and the heat is easily dissipated. The first circuit board is provided with an interface electrically connected to the hall current sensor, and the circuit principle diagram of the interface is shown in FIG. 5. In FIG. 5, the signal obtained by the interface is transmitted to pin 3 of single chip microcomputer U6. Alternatively, the detection module may also be composed of other structures. For instance, as shown in FIG. 6, the detection module is provided on the basis of resistor R38 and the resistance type detection module is formed by resistor R38 and the components around resistor R38.

(43) The control module converts a signal detected by the detection device into a control signal, and the conversion mode is the same as that of Embodiment 1.

(44) The above description is only related to preferred embodiments of the present invention, therefore, equivalent changes or modifications made to the structures, features and principles within the scope of the present invention, all fall into the scope of the present invention.