Multifunctional cable drum

Abstract

A multifunctional cable drum comprises a cable drum body and is further provided with a detection mechanism, a rotation detection circuit and a cable fracture detection circuit. The detection mechanism comprises a generator and a rubber wheel, the rubber wheel is mounted on a rotating shaft of the generator, and a shell of the generator is mounted at the upper end of the supporting seat at one end of the cable drum body; the cable fracture detection circuit is matched with a photoelectric switch; the photoelectric switch is mounted at the upper side end of an electric guide mechanism seat body of the cable drum body; the rotation detection circuit and the cable fracture detection circuit are installed in the electric cabinet and are electrically connected. When the cable drum works, whether the motor reducing mechanism normally drives the drum or not can be automatically detected, whether the cable is broken or not can be automatically detected by the cable breakage detection circuit, and when the drum does not effectively rotate or the cable is broken due to various reasons, the cable is broken. A worker in a cab can be prompted to turn off a main power switch in time for maintenance, fault expansion is reduced as much as possible, and working efficiency is correspondingly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable reel equipment, in particular to a multifunctional cable reel. Background Art

[0002] The cable reel (electrically driven winding reel) is a widely used mechanism, which mainly provides winding functions of power supply, control power supply or control signal cable for electric equipment. It is widely used in port cranes, container cranes, ship loaders, tower cranes, mobile electric equipment (such as welding machines), etc. The cable reel is generally driven by machine, manpower and scroll springs (the cable reel shaft is installed with an electric slip ring. According to the different installation positions of the electric slip ring on the frame, the head end of the cable wound on the outer end of the reel is connected to the outer ring or inner ring of the electric slip ring rotating at the side end of the reel shaft, and the power supply or signal, control power cable end is connected to the inner ring or outer ring of the fixedly installed electric slip ring, so that the reel can supply power to the corresponding equipment or output signals, control power, etc. when winding the cable). Among them, the machine drive is divided into motor reduction mechanism drive, hydraulic motor drive, etc. according to the power; the cable reel driven by the motor reduction mechanism (hereinafter referred to as the electric drive reel) is widely used due to its convenient control and compact structure (the motor reduction mechanism of the electric drive reel body drives the reel body to rotate to reel in or unreel the cable). In the actual application of the cable reel driven by the motor reduction mechanism (hereinafter referred to as the electric drive reel), in order to realize the orderly sending and receiving of the cable on the reel, an electric guide mechanism is generally installed on the front end thereof. The electric guide mechanism moves back and forth left and right under the control of the control system supporting the electric drive reel, so that the cable can move horizontally from left to right, from right to left, and be mixed and wound on the reel, or unwound from the reel.

[0003] Although the existing electric drive winding reels meet the actual production needs to a certain extent, there are still some problems that need to be improved due to structural limitations. Specifically, due to various reasons, the motor of the motor reduction mechanism of the cable reel fails and cannot drive the reel to retract and release the cable, or the reduction gear of the motor reduction mechanism is worn or damaged and cannot drive the reel to retract and release the cable. If the operator is in the cab (such as the cab of a port machinery) and his vision is obstructed and he cannot observe the specific situation, there is a possibility that the cable will be damaged (such as the cable cannot be unwound, the cable is broken by the movement of the equipment, the cable cannot be reeled in, the equipment causes the cable to be entangled, etc.) when the electrical equipment is in motion (such as the port machinery moves along the operating area). In summary, it is particularly necessary to provide a cable reel that can promptly remind the staff when the reel is not working properly. Utility Model Content

[0004] In order to overcome the drawbacks of the existing electric-driven winding reel as described in the background technology due to structural limitations, the utility model provides a multifunctional cable reel based on a cable reel body, which, under the joint action of relevant mechanisms in application, can automatically detect whether the motor reduction mechanism is driving the reel normally when the cable reel body is working, and when the reel fails to rotate effectively for various reasons or the cable is broken, it can immediately prompt the staff to carry out maintenance, thereby minimizing the expansion of faults and correspondingly improving work efficiency.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A multifunctional cable reel comprises a cable reel body, characterized in that it also has a detection mechanism, a rotation detection circuit, and a cable break detection circuit; the detection mechanism comprises a generator and a rubber wheel, the rubber wheel is mounted on the rotating shaft of the generator, and the shell of the generator is mounted on the upper end of a support seat at one end of the cable reel body; the cable break detection circuit is equipped with a photoelectric switch, and the photoelectric switch is mounted on the upper side end of the electric guide mechanism seat of the cable reel body; the rotation detection circuit and the cable break detection circuit are installed in an electric control box; the signal output end of the generator is electrically connected to the signal input end of the rotation detection circuit; the signal output end of the photoelectric switch is electrically connected to the signal input end of the cable break detection circuit; the control signal end of the rotation detection circuit is electrically connected to the power input end of the motor reduction mechanism of the cable reel body.

[0007] Furthermore, the outer side of the rubber wheel is in contact with the shaft rod at the reel side end of the cable reel body.

[0008] Furthermore, the detection head end of the photoelectric switch is aligned between two guide pulleys of the electric guide mechanism.

[0009] Furthermore, the rotation detection circuit includes an electrically connected bridge stack, capacitor, resistor, transistor, buzzer and relay, the normally open contact end of the relay is connected to one end of the first resistor and the positive power supply input end of the buzzer, the positive power supply output end of the bridge stack is connected to the positive electrode of the capacitor and one end of the second resistor, the other end of the second resistor is connected to the base of the first transistor, the collector of the first transistor is connected to the other end of the first resistor, the collector of the first transistor and the base of the second transistor, the negative power supply output end of the bridge stack is connected to the negative electrode of the capacitor and the emitters of two transistors, and the collector of the second transistor is connected to the negative power supply input end of the buzzer.

[0010] Furthermore, the cable break detection circuit includes an electrically connected resistor, a transistor and a buzzer, one end of the resistor is connected to the base of the transistor, and the collector of the transistor is connected to the negative power input end of the buzzer.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the utility model is based on the cable reel body, and in the application, under the joint action of the detection mechanism and the rotation detection circuit, when the cable reel is working, it can automatically detect whether the motor reduction mechanism drives the reel normally, and the cable break detection circuit automatically detects whether the cable is broken. When the reel does not rotate effectively for various reasons (such as the motor of the motor reduction mechanism is damaged, or the reduction gear of the motor reduction mechanism is damaged, etc.), or when the cable is broken, it can prompt the staff in the cab to turn off the main power switch in time and carry out maintenance, thereby reducing the expansion of faults as much as possible and correspondingly improving work efficiency. Based on the above, the utility model has a good application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0013] Figure 1 It is a schematic diagram of the overall structure and the partially enlarged structure of the utility model.

[0014] Figure 2 This is a circuit diagram of the utility model. DETAILED DESCRIPTION

[0015] Figure 1 , 2 As shown in the figure, a multifunctional cable reel comprises a cable reel body 1, a power module W1, and also has a detection mechanism, a rotation detection circuit 2, and a cable break detection circuit 3; the detection mechanism comprises a small AC generator M1 and a rubber wheel 4, the middle part of the rubber wheel 4 is tightly sleeved and fixedly mounted on the rotating shaft of the generator M1, and the right side of the shell of the generator M1 is bolted to the upper left inner end of the support seat 101 at the right end of the cable reel body; the cable break detection circuit is equipped with a photoelectric switch W3, and the photoelectric switch W3 is laterally distributed and bolted to the rear upper side end of the electric guide mechanism seat 102 of the cable reel body; the power module W1, the rotation detection circuit 2, the cable break detection circuit 3, and the power module W1 are installed in the component box 5 in the cab (to facilitate the driver and others to get the alarm prompt in time).

[0016] Figure 1 , 2As shown in , the lower end of the rubber wheel 4 contacts the upper middle part of the shaft rod 103 at the right end of the cable reel body. The right end of the detection head of the photoelectric switch W3 is aligned between the two guide pulleys 104 of the electric guide mechanism. The rotation detection circuit includes a bridge stack W2, a capacitor C1, resistors R1 and R2, transistors Q1 and Q2, a buzzer B1, and a relay K1 connected via circuit board wiring. The normally open contact end of the relay K1 is connected to one end of the first resistor R2 and the positive power input end of the buzzer B1. Pin 3 of the positive power output end of the bridge stack W2 is connected to the positive electrode of the capacitor C1 and one end of the second resistor R1. The other end of the second resistor R1 is connected to the base of the first transistor Q1. The collector of the first transistor Q1 is connected to the other end of the first resistor R2, the collector of the first transistor Q1, and the base of the second transistor Q2. Pin 4 of the negative power output end of the bridge stack W2 is connected to the negative electrode of the capacitor C1 and the emitters of the two transistors Q1 and Q2. The collector of the second transistor Q2 is connected to the negative power input end of the buzzer B1. The cable break detection circuit includes a resistor R3, a transistor Q3 and a buzzer B2 connected via circuit board wiring, one end of the resistor R3 is connected to the base of the transistor Q3, the positive power input terminal 1 of the photoelectric switch W3 is connected to the positive power input terminal of the buzzer B2, the negative power input terminal 2 of the photoelectric switch W3 is connected to the emitter of the transistor Q3, and the collector of the transistor Q3 is connected to the negative power input terminal of the buzzer B2. The power input terminals 1 and 2 of the power module W1 are connected to the two poles of the AC 220V power supply via wires, respectively; the power output terminals 3 and 4 of the power module W1 are connected to the positive power input terminal of the relay K1 of the power input circuit of the rotation detection circuit and the negative pole of the capacitor C1, the positive power input terminal of the buzzer B2 of the power input circuit of the cable break detection circuit and the emitter of the transistor Q3 via wires, respectively; the power output terminals of the generator M1 and the power input terminals of the relay K1 of the signal input circuit of the rotation detection circuit are connected via wires; the signal output terminal 3 of the photoelectric switch W3 and the other end of the resistor R3 of the signal input circuit of the cable break detection circuit are connected via wires; the power input terminals of the relay K1 of the control signal terminal of the rotation detection circuit and the power input terminals of the motor deceleration mechanism M of the cable reel body are connected via wires.

[0017] Figure 1 , 2As shown, the new type is based on the cable reel body 1 (M1). In the application, the cable reel driven by the motor reduction mechanism of the cable reel body 1 rotates clockwise or counterclockwise to reel in or unwind the cable. The electric guide mechanism 102 of the cable reel body 1 moves back and forth under the control of the electric drive reel supporting control system, so that the cable can move horizontally from left to right and from right to left to be evenly wound on the reel, or unwound from the reel. After the AC 220 power supply enters the power input terminal of the power module W1, the 3rd and 4th pins of the power module W1 output a stable DC 12V power supply that enters the power input terminal of the rotation detection circuit and the cable break detection circuit, and the above circuits are powered on and work. After the staff in the cab turns on the power switch of the motor reduction mechanism of the cable reel body 1, the relay K1 will be energized to close its control power input terminal and the normally open contact terminal, and then the 12V power enters the positive power input terminal of the buzzer B1 through the control power input terminal and the normally open contact terminal of the relay K1; under normal circumstances, if the motor reduction mechanism drives the reel to rotate normally, the shaft 103 of the rotating drum will drive the rubber wheel 4 to rotate, and the rubber wheel 4 drives the rotating shaft of the generator M1 to rotate. The generator M1 sends out an AC 5V power supply to the power input terminal of the bridge pile W2, and the bridge pile W2 converts the AC power into a DC power supply, and outputs it to one end of the resistor R1 through the capacitor C1 filtering, and then enters the base of the transistor Q1 through the resistor R1 step-down and current limiting. The transistor Q1 is turned on and the collector outputs a low level and enters the base of the transistor Q2. The transistor Q2 will not be turned on, and the buzzer B1 will not be energized to sound, indicating that the reel is normally retracting and releasing the cable. If the motor reduction mechanism works abnormally and no longer drives the reel to rotate (for example, the motor or reduction gear is damaged, etc.), the shaft 103 of the rotating drum no longer drives the rubber wheel 4 to rotate, and the rubber wheel 4 drives the shaft of the generator M1 to no longer rotate. The generator M1 no longer sends out AC power to enter the power input end of the bridge stack W2, and the collector of the transistor Q1 is cut off and no longer outputs a low level to enter the base of the transistor Q2. The base of the transistor Q2 obtains a suitable forward bias voltage from the positive electrode of the 12V power supply through the resistor R2 to reduce the voltage and limit the current, and the collector is turned on to output a low level to enter the negative power input end of the buzzer B1. The buzzer B1 will be energized and sound, indicating that the reel is abnormal and the cable is not retracted normally.

[0018] Figure 1 , 2As shown, after the cable break detection circuit is powered on, if the cable is not broken, the infrared beam emitted by the detection head of the photoelectric switch W3 is blocked by the cable and its 3rd pin does not output a high level, then the buzzer B2 will not be powered on to make a sound, indicating that the cable is not broken; after the cable is broken due to various reasons (such as the cable is wound up by a reel, the cable is hooked by other foreign objects and the cable is pulled off), the infrared beam emitted by the detection head of the photoelectric switch W2 is no longer blocked by the cable and its 3rd pin outputs a high level, the high level enters the base of the transistor Q3 through the resistor R3 for voltage reduction and current limiting, the transistor Q3 is turned on and the collector outputs a low level which enters the negative power input terminal of the buzzer B2, the buzzer B2 is powered on to make a sound, indicating that the wound cable is broken. Through the above, the new type can automatically detect whether the motor reduction mechanism drives the reel normally, and the cable break detection circuit automatically detects whether the cable is broken. When the reel does not rotate effectively due to various reasons (such as the motor of the motor reduction mechanism is damaged, or the reduction gear of the motor reduction mechanism is damaged, etc.), or when the cable is broken, it can prompt the staff in the cab to turn off the main power switch in time and carry out maintenance, thereby reducing the expansion of faults as much as possible and correspondingly improving work efficiency. Figure 2 Among them, relay K1 is an AC 220V relay; transistors Q1, Q2, and Q3 are NPN transistors of model 9013; power module W1 is a finished product of an AC 220V to DC 12V switching power module; the resistance values ​​of resistors R1, R2, and R3 are 47K, 100K, and 47K respectively; sounders B1 and B2 (the sounds they emit are inconsistent) are finished active continuous sound alarms of model XQ12V; the model of bridge pile W2 is KBP301; generator M1 is a small 5V AC generator; capacitor C1 is an electrolytic capacitor of model 470μF / 100V; photoelectric switch W3 is a finished product of a photoelectric switch of model m18, which has two power input terminals and one signal output terminal. When there is an obstacle at the front end of the detection head during operation, the signal output terminal does not output power, otherwise it outputs power (detection distance 30 cm).

[0019] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the utility model.

[0020] In addition, it should be understood that although the present specification is described according to the implementation mode, the implementation mode does not only include an independent technical solution. This narrative method of the specification is only for the sake of 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 implementation modes that can be understood by those skilled in the art.

Claims

1. A multifunctional cable reel, comprising a cable reel body, characterized in that: It also has a detection mechanism, a rotation detection circuit, and a cable break detection circuit; the detection mechanism includes a generator and a rubber wheel, the rubber wheel is installed on the rotating shaft of the generator, and the shell of the generator is installed on the upper end of a support seat at one end of the cable reel body; the cable break detection circuit is equipped with a photoelectric switch, and the photoelectric switch is installed on the upper side end of the electric guide mechanism seat of the cable reel body; the rotation detection circuit and the cable break detection circuit are installed in an electric control box; the signal output end of the generator is electrically connected to the signal input end of the rotation detection circuit; the signal output end of the photoelectric switch is electrically connected to the signal input end of the cable break detection circuit; the control signal end of the rotation detection circuit is electrically connected to the power input end of the motor reduction mechanism of the cable reel body.

2. A multifunctional cable reel according to claim 1, characterized in that: The outer side of the rubber wheel contacts the reel side end shaft rod of the cable reel body.

3. A multifunctional cable reel according to claim 1, characterized in that: The detection head end of the photoelectric switch is aligned between the two guide pulleys of the electric guide mechanism.

4. A multifunctional cable reel according to claim 1, characterized in that: The rotation detection circuit includes an electrically connected bridge stack, capacitor, resistor, transistor, buzzer and relay. The normally open contact end of the relay is connected to one end of the first resistor and the positive power input end of the buzzer. The positive power output end of the bridge stack is connected to the positive electrode of the capacitor and one end of the second resistor. The other end of the second resistor is connected to the base of the first transistor. The collector of the first transistor is connected to the other end of the first resistor, the collector of the first transistor and the base of the second transistor. The negative power output end of the bridge stack is connected to the negative electrode of the capacitor and the emitters of two transistors. The collector of the second transistor is connected to the negative power input end of the buzzer.

5. A multifunctional cable reel according to claim 1, characterized in that: The cable break detection circuit comprises an electrically connected resistor, a transistor and a buzzer, one end of the resistor is connected to the base of the transistor, and the collector of the transistor is connected to the negative power input end of the buzzer.

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