Electric winding drum capable of safely supplying power

Abstract

An electric winding drum capable of supplying power safely belongs to the technical field of electric winding drum equipment and comprises an electric winding drum body, a bottom plate, a wheel mechanism, a detection mechanism, a limiting mechanism and a motor performance detection circuit. The wheel mechanism is mounted at the lower end of the baseplate; the limiting mechanisms are installed on the bottom plate, the detection mechanism comprises a thermistor, a shell and a magnet ring, the magnet ring is installed at the side end of the shell, the thermistor is installed in the shell, the motor performance detection circuit is installed in the electric cabinet, and a fixing plate is installed at the rear end of the bottom plate. The electrically-driven winding drum body and the electric guide mechanism of the electrically-driven winding drum body are installed at the rear end and the front end of the bottom plate respectively. The whole movement of equipment can be conveniently controlled, convenience is brought to workers, and the working efficiency is correspondingly improved; by means of the limiting mechanism, the whole equipment cannot move, and stable power supply for related electric equipment is guaranteed; when the motor is over-temperature, workers can be timely lifted for maintenance, and equipment fault expansion is prevented as much as possible.

Description

Technical Field

[0001] This utility model relates to the field of cable reel equipment technology, and in particular to an electric reel that can safely supply power. Background Technology

[0002] Cable reels are widely used mechanisms, primarily providing power, control power, or control signal cables for electric equipment. They are widely used in port cranes, container cranes, ship loaders, tower cranes, and mobile electric equipment (such as welding machines). Cable reels are generally powered by machines, manual operation, or spiral springs. (The cable reel shaft is equipped with electric slip rings. Depending on the position of the slip rings on the frame, the cable end wound on the outer side of the reel is connected to the outer or inner ring of the slip ring located on the side of the reel shaft. The power, signal, or control power cable end is connected to the fixed inner or outer ring of the slip ring, enabling the reel to supply power or output signals and control power to the corresponding equipment when winding the cable.) Machine-driven reels can be further categorized by power source, including motor reduction mechanism drives and hydraulic motor drives. Motor reduction mechanism driven cable reels (hereinafter referred to as electric drive reels) are more widely used due to their convenient control and compact structure (the motor reduction mechanism of the electric drive reel body drives the reel body to rotate and wind or unwind the cable). In practical applications of electric drive drums, in order to ensure that the cable is wound and unwound in an orderly manner on the drum, an electric guide device is generally installed at the front end. Under the control of the electric drive drum's matching control system, the electric guide device moves back and forth left and right, so that the cable can move laterally from left to right and from right to left and be wound evenly on the drum, or be unwound from the drum.

[0003] In existing technologies, some electric drive drums are used independently to power other different electrical equipment (such as powering a fixed-position welding machine with a short cable, a fixed-position sewage pump with a short cable, or a small electric gantry crane or electric loader that is in motion, etc.). Currently, the structure of a movable electric drive drum generally includes the electric drive drum body and a vehicle body. In actual operation, the operator manually pushes the vehicle body to the corresponding work position, thereby powering the corresponding equipment (the electric drive drum is located at the power socket at the end of the power supply wire, etc., the power supply end of the electric drive drum's cable is connected to the power socket, etc., and the front end of the cable is pulled out to connect to the electrical equipment). With the development of industrial technology, the functions of electrically driven cable reels have become increasingly sophisticated. For example, the authorized patent in my country, patent number "201620126808.9," entitled "A Movable Cable Reel," states that "this utility model's movable cable reel facilitates movement by the user according to specific circumstances, reduces labor during handling, improves work efficiency, solves the problem of damage to cables caused by excessive vibration during winding, extends cable life, increases the stability of this utility model, and reduces mechanical damage." As can be seen above, although the patent achieves the described technical effects, it also has some technical drawbacks due to structural limitations. Firstly, the position of the moving device is manually pushed, which is inconvenient for workers and consequently hinders work efficiency. Secondly, it lacks the performance monitoring function for the electric drive drum motor reduction mechanism and the electric guide equipment. When the electric drive drum motor reduction mechanism and the electric guide equipment experience overheating problems due to various reasons (such as motor short circuit or excessive load), the staff cannot promptly understand the situation, shut off the power, or perform maintenance, which may lead to the escalation of the fault (for example, due to a relatively long short circuit time and excessive temperature rise, the stator coil of the motor may be completely burned out), which will also have an adverse impact on production (safe power supply cannot be guaranteed). Utility Model Content

[0004] To overcome the shortcomings of existing electric drive drums due to structural limitations, as described in the background art, this utility model provides an electric drive drum body that, under the combined action of related structures, allows operators to easily control the equipment to move to the corresponding workstation via electric drive by operating two power switches. It also prevents equipment displacement through a limiting mechanism, and can monitor the working performance of the electric drive drum's drive motor reduction mechanism and the electric guide device's motor in real time. Furthermore, it can promptly alert operators to maintenance in case of abnormalities, thus minimizing the escalation of equipment failures.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An electrically powered drum capable of safe power supply includes an electrically driven drum body, a base plate, a wheel mechanism, a detection mechanism, and a battery. It also includes a limit mechanism and a motor performance detection circuit. Multiple sets of the wheel mechanism and limit mechanism are included. Each wheel mechanism includes a motor reduction gear and a wheel, with the wheel fixedly mounted on the outer end of the motor reduction gear's shaft. The motor reduction gears of the multiple wheel mechanisms are fixedly mounted around the lower end of the base plate. Each limit mechanism includes an electric push rod and a support plate. The upper ends of the electric push rods of the multiple limit mechanisms are fixedly mounted around the base plate, and the lower ends of the electric push rods are located below the base plate. The support plates of the multiple limit mechanisms are fixedly mounted at the lower ends of the multiple electric push rods. The detection mechanism includes... The device includes at least two thermistors, a housing, and a magnet ring. One end of the housing has an open structure, and the magnet ring is fixedly installed on the outside of one end of the housing. The thermistors are installed inside the housing. The two housings are respectively attracted by magnets to the outer end of the motor housing of the electric drive drum body, the electric drive drum drive motor reduction mechanism, and the electric guide device. The motor performance detection circuit is installed in the electrical control box. A fixing plate is fixedly installed at the rear end of the base plate, and the electrical control box is installed at the rear end of the fixing plate. The battery is installed on the base plate. The electric drive drum body and its own electric guide mechanism are respectively installed on the rear end and front end of the base plate. The motor performance detection circuit has at least two paths, and the signal input terminals of the two thermistors and the two paths of the motor performance detection circuit are electrically connected.

[0007] Furthermore, the heated surface of the thermistor and the outer casing side are in a vertical plane.

[0008] Furthermore, when the movable column of the electric push rod is at the lower stop point, the lower end of the support plate contacts the ground.

[0009] Furthermore, the two thermistor temperature sensing surfaces are in close contact with the outer end of the motor housing of the electric drive drum drive motor reduction mechanism and the electric guide device of the electric drive drum body.

[0010] Furthermore, each motor performance detection circuit includes an electrically connected resistor, a transistor, an alarm, and a relay. The positive power input terminal of the alarm is connected to the normally open contact terminal of the relay. One end of the resistor is connected to the base of the transistor, the collector of the transistor is connected to the negative power input terminal of the relay, and the other end of the resistor is connected to the emitter of the transistor and the negative power input terminal of the alarm.

[0011] Compared with the prior art, the advantages of this utility model are: (1) Based on the electric drive drum body, this utility model has wheels driven by the motor reduction device. The staff can conveniently control the overall movement of the equipment (forward or backward, turning) by controlling two power switches, which brings convenience to the staff and improves the work efficiency accordingly; (2) After reaching the work point, the staff can ensure that the equipment will not shift by using the limit mechanism, which ensures stable power supply to the relevant electrical equipment; (3) The motor performance detection circuit and the detection mechanism can monitor the working performance of the electric drive drum drive motor reduction mechanism and the electric guide device in real time. When the motor overheats, the staff can carry out maintenance in time, which can prevent the equipment failure from escalating as much as possible, and further ensure that the electrical equipment can use electricity safely. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of the testing mechanism of this utility model.

[0015] Figure 3 This is the circuit diagram of this utility model. Detailed Implementation

[0016] Figure 1 , 2As shown in Figure 3, the electrically powered drum capable of safe power supply includes an electrically driven drum body 1, a power module W1, a power switch, a base plate 2, a wheel mechanism 3, a detection mechanism, and a battery G. It also has a limit mechanism 4 and a motor performance detection circuit 6. There are four sets of wheel mechanisms 3 and limit mechanisms 4. Each set of wheel mechanism 3 includes a motor reduction device M1 (M2) and a wheel 31. The wheel 31 is fixedly installed on the outer end of the shaft of the motor reduction device M1 (M2). The outer shells of the motor reduction devices M1 (M2) of the four sets of wheel mechanisms are respectively fixed with bolts. The wheels are located on the outer side of the bottom of the base plate 2. Each limiting mechanism includes an electric push rod M3 and a support plate 41. A through hole 101 is located around the bottom of each of the four limiting mechanisms. The lower ends of the electric push rods M3 of the four limiting mechanisms are bolted to the four through holes 101, and the movable column of the electric push rod extends downward through the through holes and is located at the bottom of the base plate 1. The support plates 41 of the four limiting mechanisms are welded to the lower ends of the movable columns of the four electric push rods M3. The detection mechanism includes two thermistors RT1 (RT2) and a plastic box 51, a permanent magnet... The right side of the plastic box 51 has an open structure, with a hollow annular permanent magnet ring glued to the outer right side of the plastic box 51. Thermistors RT1 (RT2) are mounted on the circuit board inside the plastic box 51, with their heated surfaces located on the right side of the box. The heated surfaces of thermistors RT1 (RT2) and the right side of the plastic box are on the same vertical plane. The right sides of the two plastic boxes 51 are respectively attracted to the outer side of the motor housing of the electric drive drum drive motor reduction mechanism and the electric guide device of the electric drive drum body 1 by magnets 51. The temperature sensing surface of the thermistor RT1 (RT2) is in close contact with the outer end of the housing; the power module W1, the motor performance detection circuit 6, and the power switch (the handle is located outside the control box) are respectively installed on the circuit board inside the control box 7. A fixing plate is welded to the rear end of the base plate 2. Push handles 21 are fixedly installed on the upper two sides of the rear end of the fixing plate. The control box 5 is installed in the middle of the rear end of the fixing plate. The electric drive drum body 1 and its own electric guide mechanism 102 are respectively installed on the rear end and front end of the base plate 2. The battery G (with a battery shell) is fixedly installed in the middle of the right end of the base plate.

[0017] Figure 1 , 2As shown in Figure 3, when the movable column of the electric push rod M3 is at the lower stop point, the lower end of the support plate 41 is in contact with the ground. The motor performance detection circuit has two paths. Each path includes a resistor R2, a transistor Q1, an alarm B1, and a relay J1 connected via circuit board wiring. The positive power input terminal of the alarm B1 is connected to the normally open contact terminal of the relay J1. One end of the resistor R2 is connected to the base of the transistor Q1, and the collector of the transistor Q1 is connected to the negative power input terminal of the relay J1. The other end of the resistor R2 is connected to the emitter of the transistor Q1 and the negative power input terminal of the alarm B1. The power input terminals 1 and 2 of power module W1 are connected to the two poles of the 220V AC power supply via wires. The power output terminals 3 and 4 of power module W1 are connected to the power input terminals 1 and 2 of the three power switches K1, K2, and K3, the power input terminal of the motor performance detection circuit, the positive power input terminal of relay J1, and the emitter of transistor Q1 via wires. The power input terminals 3, 4, 5, and 6 of power switch K3 are connected to the positive and negative / positive power input terminals of the four sets of electric push rods M3 via wires. The power input terminals 3, 4, 5, and 6 of power switch K1 are connected to the positive and negative / positive power input terminals of the two sets of motor reduction devices M1 on the left side of the base plate via wires. The power input terminals 3, 4, 5, and 6 of power switch K2 are connected to the positive and negative / positive power input terminals of the two sets of motor reduction devices M2 on the right side of the base plate via wires. The two thermistors RT1 and RT2 are connected to the positive power output terminal 3 of power module W1 and the two motor performance detection circuits (…). Figure 2 (This is just a representative diagram of a motor performance detection circuit.) The positive power input terminal of relay J1 and one end of resistor R2 are connected by wires.

[0018] Figure 1 , 23. Based on the electric drive drum body 1, in application, its own motor reduction mechanism drives the drum 103 to rotate clockwise or counterclockwise to wind or unwind the cable. Under the control of the electric drive drum matching control system, the electric guide mechanism 102 of the electric drive drum body 1 moves back and forth left and right, so that the cable can move laterally from left to right or from right to left and be evenly wound on the drum, or unwound from the drum (the above are existing mature technologies, which will not be further described in this application, nor will they provide any protection for the above technical solutions). After the 220V AC power enters the power input terminal of the power module W1, the 3rd and 4th pins of the power module W1 output 12V DC power to the power input terminals of the three power switches K1, K2, K3 and the motor performance detection circuit (and enters the power input terminal of the battery G1 to charge the battery G1, so that the equipment can be powered even without a power supply line, making it convenient to move the position). When the new device needs to be moved, the operator holds the push handle 21 with both hands. When the operator moves the handle of the power switch K1 or K2 to the left or right, pins 1 and 2 and pins 3 and 4 or pins 5 and 6 of the power switch K1 or K2 are connected respectively. In this way, the positive and negative or negative and positive power input terminals of the two sets of motor reduction devices M1 on the left end or the two sets of motor reduction devices M2 on the right end of the base plate will be energized, and the two sets of motor reduction devices M1 on the left end or the two sets of motor reduction devices M2 on the right end will drive the wheel to rotate counterclockwise or clockwise. Specifically, when the motor reduction devices at both ends of the base plate drive the wheels to rotate counterclockwise, the entire device moves forward in a straight line; when the motor reduction devices at both ends of the base plate drive the wheels to rotate clockwise, the entire device moves backward in a straight line. Only when the motor reduction device at the left end of the base plate drives the wheels to rotate counterclockwise, the entire device turns right forward; only when the motor reduction device at the right end of the base plate drives the wheels to rotate counterclockwise, the entire device turns left forward; only when the motor reduction device at the left end of the base plate drives the wheels to rotate clockwise, the entire device turns left backward; and only when the motor reduction device at the right end of the base plate drives the wheels to rotate clockwise, the entire device turns right backward. Through the above, this new type of electric drive drum, with its motor-driven wheels, allows operators to conveniently control the overall movement (forward, backward, and turning) of the device electronically by controlling two power switches, bringing convenience to operators and correspondingly improving work efficiency.

[0019] Figure 1 , 2As shown in Figure 3, when the equipment is moved to the corresponding workstation, to ensure stability and prevent displacement, the operator moves the handle of power switch K3 to the left. Pins 1 and 2, and pins 3 and 4 of power switch K3 are connected, energizing the positive and negative power input terminals of the four sets of electric push rods M3. Their movable columns push the support plate 41 downwards until it gradually contacts the ground. After contact with the ground, the power switch is turned off. Because the lower ends of the four support plates 41 are in close contact with the ground, the equipment will not shift or shake during operation. When the work is finished and the equipment needs to be moved, the operator moves the handle of power switch K3 to the right, energizing pins 1 and 2, and pins 5 and 6 of power switch K3. This energizes the positive and negative power input terminals of the four sets of electric push rods M3, pushing their movable columns upwards to increase the distance between the support plate 41 and the ground. After reaching the desired position, the power switch is turned off. Since the lower ends of the four support plates 41 are no longer in contact with the ground, the equipment can be easily moved. Specifically, after the motor performance detection circuit is powered on, if the motor of the electric drive drum drive motor reduction mechanism and the electric guide device is fault-free and the temperature is relatively low, the resistance value of the adjustable resistor RT1 or RT2 is relatively large, and the voltage drop between it and the resistor R2 of the first or second motor performance detection circuit is large. Conversely, if the motor of the electric drive drum drive motor reduction mechanism and the electric guide device is faulty and the temperature is relatively high, the resistance value of the adjustable resistor RT1 or RT2 is relatively small, and the voltage drop between it and the resistor R2 of the first or second motor performance detection circuit is small. In practice, if the motor temperature of the electric drive drum motor reduction mechanism or the electric guide device does not exceed the threshold (e.g., below 65℃), the resistance value of the adjustable resistor RT1 or RT2 is relatively large, resulting in a large voltage drop between it and the resistor R2 of the first or second motor performance detection circuit. Thus, after the 12V power supply is divided between the adjustable resistor RT1 or RT2 and the resistor R2 of the first or second motor performance detection circuit, the base of the transistor Q1 in the first or second motor performance detection circuit is below 0.7V, and the transistor Q1 will not conduct. Consequently, the alarm B1 of the first or second motor performance detection circuit will not be energized and will not sound, indicating that the motor temperature of the electric drive drum motor reduction mechanism or the electric guide device is not too high. If the motor temperature of the electric drive drum motor reduction mechanism or the electric guide device exceeds the threshold (e.g., above 65℃), the resistance value of the adjustable resistor RT1 or RT2 is relatively small, resulting in a small voltage drop between it and the resistor R2 of the first or second motor performance detection circuit. Thus, after the 12V power supply is divided between the adjustable resistor RT1 or RT2 and the resistor R2 of the first or second motor performance detection circuit, the base of the transistor Q1 in the first or second motor performance detection circuit will be higher than 0.7V. The transistor Q1 will then conduct, outputting a low-level signal to the negative power input terminal of the relay J1. The relay J1 will then be energized, closing its control power input terminal and normally open contact. Correspondingly, the alarm B1 of the first or second channel will be energized and sound, indicating that the motor temperature of the electric drive drum motor reduction mechanism or the electric guide device is too high.Upon hearing the sound (the alarm B1 of the first and second motor performance detection circuits emits different sounds, making it easier for staff to distinguish whether the problem is with the electric drive drum's motor reduction mechanism or the electric guide equipment's motor temperature, thus improving the repair speed), staff can promptly shut off the main power supply to the electric drive drum for repair, preventing the fault from escalating. Figure 3 As shown, transistor Q1 is a 9013 NPN transistor; power module W1 is a finished 220V AC to 12V DC switching power supply module; resistor R2 has a resistance of 100K. (An adjustable resistor can be used instead; during production, when the resistance value is relatively large, the voltage drop is large, so when the motor temperature is relatively low, alarm B1 will be energized and sound, indicating that the temperature threshold is set relatively low. When the resistance value is relatively small, the voltage drop is small, so when the motor temperature is relatively high, alarm B1 will be energized and sound, indicating that the temperature threshold is set relatively low.) Alarm B1 is a finished product of active continuous audible alarm model MF12V (one sound is a buzzer, and the other sound is an alarm). Electric push rod M2 is a finished product of reciprocating electric telescopic rod. Motor reduction devices M1 and M2 are finished products of coaxial motor gear reducers with a working voltage of DC 12V and a power of 120W. Relay J1 is model DC 12V. Battery G1 is model 12V / 100Ah. Thermistors RT1 and RT2 are model NTC103D negative temperature coefficient thermistors. Relay J1 is model DC 12V.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0021] Furthermore, it should be understood that although this specification describes the embodiments, the embodiments do not necessarily contain only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A safe power supply electric winding drum, comprising an electric drive winding drum body, a bottom plate, a wheel mechanism, a detection mechanism, a storage battery, characterized in that, It also features a limiting mechanism and a motor performance detection circuit; multiple sets of wheel mechanisms and limiting mechanisms are included, each wheel mechanism comprising a motor reduction gear and a wheel, the wheel being fixedly mounted on the outer end of the motor reduction gear's shaft; the motor reduction gears of the multiple wheel mechanisms are respectively fixedly mounted around the lower end of the base plate; each limiting mechanism includes an electric push rod and a support plate, the upper ends of the electric push rods of the multiple limiting mechanisms are respectively fixedly mounted around the base plate and the lower ends of the electric push rods are located at the lower part of the base plate, and the support plates of the multiple limiting mechanisms are respectively fixedly mounted at the lower ends of the multiple electric push rods; the detection mechanism includes at least two thermistors, a housing, and a magnet ring. One end has an open structure, with a magnet ring fixedly installed on the outside of one side of the housing, and a thermistor installed inside the housing. The two housings are respectively attracted by magnets to the outer ends of the electric drive drum drive motor reduction mechanism and the motor housing of the electric guide device. The motor performance detection circuit is installed in the electrical control box. A fixing plate is fixedly installed at the rear end of the base plate, and the electrical control box is installed at the rear end of the fixing plate. The battery is installed on the base plate, and the electric drive drum body and its own electric guide mechanism are respectively installed on the rear end and front end of the base plate. The motor performance detection circuit has at least two paths, and the two thermistors and the signal input terminals of the two motor performance detection circuits are electrically connected respectively.

2. A motorised reel capable of safe power supply according to claim 1, characterised in that, The heated surface of the thermistor and the side of the outer casing are in a vertical plane.

3. A motorised reel capable of safe power supply according to claim 1, characterised in that, When the movable column of the electric actuator is at the lower stop point, the lower end of the support plate contacts the ground.

4. The electric drum capable of safe power supply according to claim 1, characterized in that, Two thermistor temperature sensing surfaces are in close contact with the outer end of the motor housing of the electric drive drum drive motor reduction mechanism and the electric guide device.

5. The electrically safe powered winch of claim 1, wherein, Each motor performance detection circuit includes an electrically connected resistor, transistor, alarm, and relay. The positive power input terminal of the alarm is connected to the normally open contact terminal of the relay. One end of the resistor is connected to the base of the transistor, the collector of the transistor is connected to the negative power input terminal of the relay, and the other end of the resistor is connected to the emitter of the transistor and the negative power input terminal of the alarm.

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