An electric hoisting device
By installing a small generator and battery on the hook and using pulleys to generate electricity, automatic supplemental lighting and wireless prompts are achieved in low-light conditions, solving the safety hazards of electric hoisting mechanisms and improving operational safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FASHIDA (SHANGHAI) MASCH EQUIP CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-14
Smart Images
Figure CN224493428U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hoisting mechanism technology, and in particular to an electric hoisting device. Background Technology
[0002] Electric hoisting mechanisms (such as overhead cranes and electric winches) are widely used equipment in production. Their main structure includes a body, a motor gear reduction mechanism, a wire rope, a hook, and a control system. During operation, the operator operates the corresponding switches of the control system in the cab (such as the cab of an overhead crane). Then, the motor gear reduction mechanism drives the hook to move up or down via the wire rope to lift the goods hooked at the loading station or unload them at the unloading station.
[0003] While existing electric hoisting mechanisms meet the needs of hoisting operations to some extent, they also have the following technical shortcomings due to structural and functional limitations. Specifically, because the operator's cab of overhead cranes is relatively high, and the visibility is obstructed by goods and vehicles at the work site, it cannot be guaranteed that the operator can effectively observe personnel approaching the hook and goods. In extreme cases, there is a possibility that improper operation by the operator could cause the hook or goods to collide with personnel on the ground. Furthermore, there are certain safety hazards for ground workers operating in poorly lit areas (such as inside train freight cars) (for example, the crane operator may collide with personnel due to poor lighting while operating the crane, or personnel may accidentally fall and collide with other objects and be injured). Due to these factors, it is essential to provide hoisting equipment that can provide supplemental lighting in low-light conditions and alert the operator to safety when personnel approach the hook. Utility Model Content
[0004] To overcome the shortcomings of existing electric hoisting mechanisms due to structural and functional limitations, as described in the background art, this utility model provides a small generator powered by a pulley driven by the hook, based on the electric hoisting mechanism body. This eliminates the need for external power lines and charging, bringing convenience to practical use. In application, it can automatically turn on the lighting when the ambient light is poor, and wirelessly alerts the driver at a higher position to drive cautiously when the hook is close to the ground at a certain distance. This provides convenience for workers and drivers, and correspondingly achieves better safety results.
[0005] The technical solution adopted by this utility model to solve its technical problem is:
[0006] An electric hoisting device includes an electric hoisting mechanism body, a generator, a rectifier circuit, and a battery. It also includes a wireless receiving circuit, a supplementary lighting circuit, a warning and transmitting circuit, and a receiving control circuit. A contact wheel is fixedly installed in front of the generator's shaft, and the generator housing is fixedly installed inside the hook of the electric hoisting mechanism body. The rectifier circuit, battery, wireless receiving circuit, supplementary lighting circuit, and warning and transmitting circuit are installed in a component box, which is fixedly installed on the outer end of the hook. The power output terminal of the generator is electrically connected to the power input terminal of the rectifier circuit. The power output terminal of the rectifier circuit, the two terminals of the battery, and the power input terminal of the wireless receiving circuit are electrically connected. The power output terminal of the wireless receiving circuit is electrically connected to the power input terminals of the supplementary lighting circuit and the warning and transmitting circuit. The receiving control circuit is installed in the operator's cab of the electric hoisting mechanism body.
[0007] Furthermore, the contact wheel rotates to contact the lower part of the hook pulley.
[0008] Furthermore, the generator is an AC generator, and the outer diameter of the contact wheel is larger than the outer diameter of the generator housing.
[0009] Furthermore, the rectifier circuit includes a bridge rectifier and a capacitor that are electrically connected, with the power output terminal of the bridge rectifier and the positive and negative terminals of the capacitor respectively connected.
[0010] Furthermore, the supplementary lighting circuit includes a light control module and a lighting lamp that are electrically connected. The positive power input terminal of the lighting lamp is connected to the positive power output terminal of the light control module, and the negative power input terminal of the light control module is connected to the negative power input terminal of the lighting lamp.
[0011] Furthermore, the prompting and transmitting circuit includes an electrically connected wireless transmitting circuit module, a pyroelectric detection module, and a buzzer. The power output terminal of the pyroelectric detection module is connected to the positive power input terminal of the wireless transmitting circuit module and the positive power input terminal of the buzzer. The negative power input terminal of the pyroelectric detection module is connected to the negative power input terminal of the buzzer and the negative power input terminal of the wireless transmitting circuit module. Two contacts under one of the wireless transmitting buttons of the wireless transmitting circuit module are shorted together.
[0012] Furthermore, the receiving control circuit includes a power supply module, a wireless receiving circuit module, a resistor, a transistor, a wireless transmitting circuit module, and a buzzer that are electrically connected. The positive power output terminal of the power supply module is connected to the positive power input terminal of the wireless receiving circuit module, the positive power input terminal of the buzzer, and the positive power input terminal of the wireless transmitting circuit module. The first power output terminal of the wireless receiving circuit module is connected to one end of the resistor, and the other end of the resistor is connected to the base of the transistor. The emitter of the transistor is connected to the wireless receiving circuit module and the negative power input terminal of the wireless receiving circuit module. The collector of the transistor is connected to the negative power input terminal of the buzzer.
[0013] Compared with existing technologies, the advantages of this utility model are as follows: Based on the electric hoisting mechanism body, this utility model uses a pulley on the hook to drive a small generator to generate electricity and a battery to store electrical energy, eliminating the need for external power lines and charging. This brings convenience to practical use (if a power line is connected between the hook and the crane, the wire rope lifting, the relatively easy entanglement and breakage of the wire rope would cause inconvenience in practical applications). In application, it can automatically turn on the power to the lighting when the lighting is poor and turn off the power during the day or when the lighting is good. When the hook is close to the ground and the workers are within a certain distance, it can wirelessly remind the driver at a high position to drive cautiously and also remind the workers to pay attention to safety. This utility model brings convenience to the workers and the driver, and can achieve better safety results. In summary, this utility model has good application prospects. Attached Figure Description
[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0016] Figure 2 , 3 This is a partial structural schematic diagram of the present invention.
[0017] Figure 4 , 5 This is the circuit diagram of this utility model. Detailed Implementation
[0018] Figure 1 , 2 As shown in Figures 3, 4, and 5, an electric hoisting device includes an electric hoisting mechanism body 5 comprising a body 1, a motor gear reduction mechanism 2, a wire rope 3, a hook 4, a control system, and other necessary components; a generator M; a rectifier circuit 6; a storage battery G1; and also includes a wireless receiving circuit 7, a supplementary lighting circuit 8, a prompting and transmitting circuit 9, and a receiving control circuit 10. A rubber wheel 11 is fixedly installed on the front end of the generator shaft, and the rear end of the generator housing is fixedly installed on the lower front end of the hook seat of the hook 4. The steel wire rope 42 inside the pulley 41 of the generator M and the hook does not contact each other; the rectifier circuit 6, the battery G1, the wireless receiving circuit 7, the supplementary lighting circuit 8, and the prompting and transmitting circuit 9 are installed on the circuit board inside the component box 12. The rear end of the component box 12 is fixedly installed in the middle of the front outer side of the hook body of the hook 4 (the wire connected to the generator M is led out through the opening at the front lower end of the hook body and enters the component box 12); the receiving control circuit 10 is installed inside the outer casing 13 of the control console in the cab of the electric hoisting equipment (such as the cab of an overhead crane).
[0019] Figure 1 , 2As shown in Figures 3, 4, and 5, the upper end of the rubber wheel 11 rotates to contact the lower front part of the hook pulley 41 (the hook seat of the hook 4 is relatively large, capable of accommodating the installation of a small generator M). The generator M is a small AC generator, and the outer diameter of the rubber wheel 11 is larger than the outer diameter of the generator M housing. The rectifier circuit includes a bridge rectifier A1 and a capacitor C connected via circuit board wiring. The power output terminals 3 and 4 of the bridge rectifier A1 are connected to the positive and negative terminals of the capacitor C, respectively. The wireless receiving circuit includes a wireless receiving circuit module A3, a resistor R6, a transistor T3, and a relay J1 connected via circuit board wiring. The positive power input terminal 1 of the wireless receiving circuit module A3 is connected to the positive power input terminal and the control power input terminal of the relay J1. The negative power input terminal 2 of the wireless receiving circuit module A3 is connected to the emitter of the transistor T3. The second power output terminal 4 of the wireless receiving circuit module A3 is connected to one end of the resistor R6, and the other end of the resistor R6 is connected to the base of the transistor T3. The collector of the transistor T3 is connected to the negative power input terminal of the relay J1. The supplementary lighting circuit includes a light control module A2 and a lighting lamp H connected via circuit board wiring. The positive power input terminal of the lighting lamp H is connected to pin 3 of the positive power output terminal of the light control module A2, and pin 2 of the negative power input terminal of the light control module A2 is connected to the negative power input terminal of the lighting lamp H. The prompting and transmitting circuit includes a wireless transmitting circuit module A5, a pyroelectric detection module A4, and a buzzer B connected via circuit board wiring. Pin 3 of the power output terminal of the pyroelectric detection module A4 is connected to pin 1 of the positive power input terminal of the wireless transmitting circuit module A5 and the positive power input terminal of the buzzer B. Pin 2 of the negative power input terminal of the pyroelectric detection module A4 is connected to the negative power input terminal of the buzzer B and pin 2 of the negative power input terminal of the wireless transmitting circuit module A5. The two contacts under the first wireless transmitting button D1 of the wireless transmitting circuit module A5 are shorted together. The receiving control circuit includes a power module A6, a wireless receiving circuit module A8, a resistor R9, a transistor T5, a wireless transmitting circuit module A7, and a buzzer B1, all connected via circuit board wiring. The positive power output pin 3 of the power module A6 is connected to the positive power input pin 1 of the wireless receiving circuit module A8, the positive power input pin of the buzzer B1, and the positive power input pin 1 of the wireless transmitting circuit module A7. The first power output pin 3 of the wireless receiving circuit module A8 is connected to one end of the resistor R9, and the other end of the resistor R9 is connected to the base of the transistor T5. The emitter of the transistor T5 is connected to the negative power input pin 2 of the wireless receiving circuit module A8 and the negative power input pin 2 of the wireless transmitting circuit module A7. The collector of the transistor T5 is connected to the negative power input pin of the buzzer B1. The probe of the pyroelectric detection module A4, the light-emitting surface of the illumination lamp H, and the light-receiving surface of the photoresistor of the light control module are located outside the three openings at the bottom center of the component box, respectively. The four transmit buttons of the wireless transmission circuit module A7 of the receiving control circuit are located outside the four openings at the top of the outer shell.The power output terminal of generator M and the power input terminals 1 and 2 of bridge rectifier A1 of rectifier circuit are connected by wires. The positive and negative terminals of capacitor C, the two terminals of battery G1, and the power input terminals 1 and 2 of wireless receiver circuit module A3 of rectifier circuit are connected by wires. The normally open contact terminal of relay J1 and the emitter of transistor T3 of wireless receiver circuit are connected by wires. The power input terminals of light control module A2 of supplementary lighting circuit, the power input terminals of prompting and transmitting circuit, and the power input terminals of pyroelectric detection module A4 are connected by wires.
[0020] Figure 4 , 5 In this package, power module A6 is a finished product of AC 220V to DC 12V power module. Relay J1 is DC 12V. Transistors T3 and T5 are 9013 (NPN type). Resistors R6 and R9 have a resistance of 4.7K. Generator M is a small 12V AC generator. Battery G is a 12V / 5Ah lithium battery. Lighting H is a 10W bulb (LED bulbs can also be used). Bridge rectifier A1 is KBP301. Capacitor C is a 470μF / 25V electrolytic capacitor. Wireless transmitter circuit module A5 and wireless receiver circuit module A8 are genuine wireless transmitter and receiver components of model TX315B1, which operate in momentary mode (pressing the corresponding signal transmit button of wireless transmitter circuit module A5 once will output power to the corresponding power output terminal of wireless receiver circuit module A8; removing the finger from the corresponding signal transmit button of wireless transmitter circuit module A5 will stop the power output of the corresponding power output terminal of wireless receiver circuit module A8). Wireless transmitting circuit module A7 and wireless receiving circuit module A3 are genuine wireless transmitting and receiving components of model TX315B1. They operate in self-locking mode (pressing the corresponding closed signal transmit button of wireless transmitting circuit module A7 once will cause the corresponding power output terminal of wireless receiving circuit module A3 to continuously output power; pressing the corresponding open signal transmit button of wireless transmitting circuit module A7 once will stop the corresponding power output terminal of wireless receiving circuit module A3 from outputting power). Pyroelectric detection module A4 is a finished human infrared sensing electronic module sensor of model HC-SR501. It has two power input terminals and one power output terminal. When the detector head detects human activity within a circumference, the power output terminal outputs power; when no human activity is detected, no power is output. An adjustment knob is located on the rear of its housing (maximum detection distance 12 meters, adjusted to 2 meters in this embodiment). Buzzers B and B1 are finished DC continuous buzzer alarms of model SD-2910. The light control module A2 is a finished light control circuit module of model XH-M131, which has two power input terminals and one power output terminal. When the ambient light is insufficient, the power output terminal will output power. All of the above electronic components are mature technology products, therefore, this application will not elaborate on their working principles, nor will it provide any protection for the above electronic components alone.
[0021] Figure 1 , 2 As shown in Figures 3, 4, and 5, this utility model is based on the electric hoisting mechanism body 5. During operation, the operator operates the corresponding switches of the control system in the cab 51 (such as the cab of an overhead crane). Then, the motor gear reduction mechanism 2 drives the hook 4 to move up or down via the wire rope 3, lifting the goods hooked by the hook 4 at the loading station or unloading them at the unloading station. The above is a very mature technology. This application will not elaborate on the working principle of the electric hoisting mechanism body 5, nor will it provide any protection for the structure of the electric hoisting mechanism body 5 itself. In this new invention, when the wire rope drives the hook 4 up or down, the lower end of the pulley 41 of the hook 4 will drive the rubber wheel 11 to move clockwise or counterclockwise. Consequently, the generator M will output approximately 12V AC power, which enters the power input terminal of the bridge rectifier A1. The DC power output from pins 3 and 4 of the bridge rectifier A1 is filtered by capacitor C and then enters the battery G for storage (simultaneously powering the wireless receiving circuit, etc.). Thus, this invention uses the pulley 41 of the hook to drive the small generator M to generate electricity, and the battery G to store electrical energy, eliminating the need for external power lines and charging, which brings convenience to practical use (if a power line is connected between the hook and the crane, the wire rope's movement and the relatively easy entanglement and breakage of the wire rope would cause inconvenience in practical applications). After the 220V AC power enters the power input terminal of the power module A6, the stable 12V DC power output from pins 3 and 4 of the power module A6 enters the power input terminals of the wireless transmitting circuit module A7 and the wireless receiving circuit module A8. Before each hoisting operation, the operator in the cab presses the third button D3 of the wireless transmitting circuit module A7. The wireless transmitting circuit module A7 will then transmit a second wireless closed signal. After receiving the second wireless closed signal, the wireless receiving circuit module A3 will output a high level from pin 4. This high level is then reduced and current-limited by resistor R6 and enters the base of transistor T3. Transistor T3 then conducts, and its collector outputs a low level, which enters the negative power input terminal of relay J1. Relay J1 is energized and its control power input terminal and normally open contact terminal close. Consequently, the supplementary lighting circuit, the prompting circuit, and the transmitting circuit are energized and begin operation. After each hoisting operation is completed, the operator in the cab presses the fourth button D4 of the wireless transmitting circuit module A7. The wireless transmitting circuit module A7 will then transmit a second wireless open-circuit signal. After the wireless receiving circuit module A3 receives the second wireless open-circuit signal, its fourth pin will stop outputting a high level to the base of transistor T3. Transistor T3 will then be cut off, and the collector output will no longer be low level to the negative power input terminal of relay J1. Relay J1 will be de-energized and will no longer be energized, thus opening the control power input terminal and the normally open contact terminal. Consequently, the supplementary lighting circuit, the prompting circuit, and the transmitting circuit will stop working.
[0022] Figure 1 , 2As shown in Figures 3, 4, and 5, after the supplementary lighting circuit is powered on, when the ambient light is high, pin 3 of the light control module A2 does not output power, so the lighting lamp H will not be powered on and illuminate. When the ambient light is low (such as when working inside a train cargo box at night), pin 3 of the light control module A2 outputs positive power to the positive power input terminal of the lighting lamp H, so the lighting lamp H will be powered on and illuminate. Through the above, this new application can automatically turn on the power supply of the lighting lamp H when the ambient light is poor and turn off the power supply of the lighting lamp H during the day or when the light is good, providing supplementary lighting for workers to safely hook goods with the hook 4 and preventing unforeseen accidents caused by poor lighting. After the prompting and transmitting circuit is powered on, when no workers are close to the detection range of the pyroelectric detection module A4 (that is, the distance between the hook and the worker is relatively far, more than 2 meters), pin 3 of the pyroelectric detection module A4 does not output a high level to the positive power input terminal of the buzzer B and the transmitting circuit module A5, so neither the buzzer B nor the transmitting circuit module A5 will be powered on. When a worker approaches the detection range of the pyroelectric detection module A4 (i.e., the distance between the hook and the worker is relatively close, within 2 meters), the high-level output of pin 3 of the pyroelectric detection module A4 enters the positive power input terminal of the buzzer B and the transmitting circuit module A5. Both the buzzer B and the transmitting circuit module A5 will be powered on. After the buzzer B is powered on, it will emit an alarm sound to remind the worker to pay attention to safe operation and prevent injury from collisions with the hook or other objects during operation. After the wireless transmitting circuit module A5 is powered on, because the two contacts under its transmitting button D1 are shorted together (equivalent to a person pressing button D1 with their hand), the wireless transmitting circuit module A5 will transmit the first wireless closed signal. After receiving the first wireless closed signal, the wireless receiving circuit module A8 in the cab outputs a high level from pin 3. This high level is then stepped down and current-limited by resistor R9, entering the base of transistor T5. Transistor T5 conducts, and its collector outputs a low level, which enters the negative power input terminal of buzzer B1. Buzzer B1 is then powered on and sounds to alert the driver in the cab that someone is approaching the hook on the ground, urging them to drive safely and prevent the hook from colliding with the workers. Once the person leaves the detection range of the pyroelectric detection module A4, the wireless transmitting circuit module A5 loses power and stops transmitting the first wireless closed signal (buzzer B1 also loses power). Since the wireless receiving circuit module A8 no longer receives the first wireless closed signal, its pin 3 stops outputting a high level, and buzzer B1 stops sounding. Through this process, this new device can wirelessly alert the driver at a higher position to drive cautiously and also remind workers to pay attention to safety when the hook is a certain distance away from the workers on the ground.
[0023] 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.
[0024] 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, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An electric hoisting device, comprising an electric hoisting mechanism body, a generator, a rectifier circuit, and a storage battery, characterized in that, It also features a wireless receiving circuit, a supplementary lighting circuit, a prompting and transmitting circuit, and a receiving control circuit. A contact wheel is fixedly installed in front of the generator shaft, and the motor housing is fixedly installed inside the hook of the electric hoisting mechanism body. The rectifier circuit, battery, wireless receiving circuit, supplementary lighting circuit, and prompting and transmitting circuit are installed in a component box, which is fixedly installed on the outer end of the hook. The power output terminal of the generator is electrically connected to the power input terminal of the rectifier circuit. The power output terminal of the rectifier circuit, the two poles of the battery, and the power input terminal of the wireless receiving circuit are electrically connected. The power output terminal of the wireless receiving circuit is electrically connected to the power input terminals of the supplementary lighting circuit, the prompting and transmitting circuit, and the receiving control circuit is installed in the cab of the electric hoisting mechanism body.
2. The electric hoisting equipment according to claim 1, characterized in that, The contact wheel rotates and contacts the lower part of the hook pulley.
3. The electric hoisting equipment according to claim 1, characterized in that, The generator is an AC generator, and the outer diameter of the contact wheel is larger than the outer diameter of the generator housing.
4. The electric hoisting equipment according to claim 1, characterized in that, The rectifier circuit includes a bridge rectifier and a capacitor that are electrically connected. The power output terminal of the bridge rectifier and the positive and negative terminals of the capacitor are connected respectively.
5. The electric hoisting equipment according to claim 1, characterized in that, The supplementary lighting circuit includes a light control module and a lighting lamp that are electrically connected. The positive power input terminal of the lighting lamp is connected to the positive power output terminal of the light control module, and the negative power input terminal of the light control module is connected to the negative power input terminal of the lighting lamp.
6. The electric hoisting equipment according to claim 1, characterized in that, The prompt and transmission circuit includes an electrically connected wireless transmission circuit module, a pyroelectric detection module, and a buzzer. The power output terminal of the pyroelectric detection module is connected to the positive power input terminal of the wireless transmission circuit module and the positive power input terminal of the buzzer. The negative power input terminal of the pyroelectric detection module is connected to the negative power input terminal of the buzzer and the negative power input terminal of the wireless transmission circuit module. Two contacts under one of the wireless transmission buttons of the wireless transmission circuit module are shorted together.
7. The electric hoisting equipment according to claim 1, characterized in that, The receiving control circuit includes a power supply module, a wireless receiving circuit module, a resistor, a transistor, a wireless transmitting circuit module, and a buzzer, all electrically connected. The positive power output terminal of the power supply module is connected to the positive power input terminal of the wireless receiving circuit module, the positive power input terminal of the buzzer, and the positive power input terminal of the wireless transmitting circuit module. The first power output terminal of the wireless receiving circuit module is connected to one end of the resistor, and the other end of the resistor is connected to the base of the transistor. The emitter of the transistor is connected to the wireless receiving circuit module and its negative power input terminal, and the collector of the transistor is connected to the negative power input terminal of the buzzer.