Intelligent elevator safety management and control system based on Internet of Things

Abstract

The invention discloses an intelligent elevator safety management and control system based on the Internet of Things, the intelligent elevator safety management and control system comprises a lift car, a central control device and a safety management and control device, the central control device is arranged in the lift car, and the safety management and control device is arranged at the top of the lift car. The central control module is in communication connection with a central control background through a wireless communication module and a wired communication module, through the wired communication mode and the wireless communication mode, monitoring of the central control background on the whole elevator in multiple modes is achieved, the function of internet-of-things intelligence is achieved, the whole elevator car is emergently braked through the emergency braking structure, and the safety of the elevator is improved. The safety management and control function of the elevator is achieved, the cable rope can be clamped through the self-locking structure, the self-locking effect is achieved, relative locking between the cable rope and the elevator car is achieved, self-locking and braking are completed at the same time through one driving motor, the action continuity is improved, and the safety of the elevator is improved. The safety management and control function of the elevator can be completely achieved through one driving signal, and the safety management and control risk caused by signal transmission errors is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular to an intelligent elevator safety management and control system based on the Internet of Things. Background Art

[0002] In the existing elevator field, elevators are equipped with safety control systems, but the so-called safety control system is only a signal transmission system that transmits real-time data to the back-end central control to ensure real-time monitoring of the situation inside the elevator and the elevator working conditions, and does not have the function of on-site safety control of the elevator. Some elevators have emergency brake control functions, but when the upper drive device fails, better protection and safety control cannot be performed.

[0003] In summary, an intelligent elevator safety management and control system based on the Internet of Things was designed. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings, the present invention provides an intelligent elevator safety management and control system based on the Internet of Things.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] An intelligent elevator safety control system based on the Internet of Things, comprising a car, a central control device and a safety control device, wherein the central control device is arranged inside the car, the safety control device is arranged on the top of the car, and the central control device is electrically connected to the safety control device;

[0007] The safety control device includes a base fixed on the top of the car, a driving motor is arranged inside the base, a driving shaft is arranged on the output shaft of the driving motor, the driving shaft is connected to the driving wheel, four cams are evenly arranged on the outer periphery of the driving wheel, one side of each of the four cams is provided with an emergency brake structure, the emergency brake structure includes a moving plate, two push rods, a drill rod and a drill bit, the moving plate is arranged on one side of the cam, the two push rods are in the same moving direction as the moving plate and are fixed on one side of the moving plate, two drill rods are arranged at the end of each push rod, and the drill bit is fixed at the end of the drill rod;

[0008] The base is also provided with four self-locking structures, and the four self-locking structures are all connected to the driving shaft of the driving motor;

[0009] The central control device includes a central control module and a battery. A motor drive module is arranged between the central control module and the drive motor. A working power supply module and a power collection module are arranged between the central control module and the battery.

[0010] Preferably, the push rod is provided with two limit tubes, and the push rod moves on the base under the action of the limit tubes. The outer circumference of the drill rod is provided with a circle of external threads, and the outer circumference of the drill rod is provided with a threaded sleeve, which is fixed on the base. The drill rod passes through the threaded sleeve, and the external thread matches the internal thread of the inner wall of the threaded sleeve. The drill rod is rotatably connected to the push rod. When the push rod moves forward, it is limited by the limit tube for protection. At the same time, when the drill rod moves, transmission occurs between the drill rod and the threaded sleeve, so that the drill rod controls the rotation of the drill bit, thereby achieving the fixation between the entire base and the car shaft, which has an emergency braking effect.

[0011] Preferably, the self-locking structure includes a fixing plate, a through hole is provided on the fixing plate, a fixing rod is provided inside the through hole, the cable of the car passes through the through hole and is fixedly connected to the fixing rod, a fixing ring and a limiting ring are provided on the inner wall of the through hole, the fixing ring and the limiting ring are both arc-shaped, the fixing ring is fixed to the inner wall of the through hole, the limiting ring is located opposite to the fixing ring, a connecting rope is provided at both ends of the limiting ring, a guide tube is provided on the side of the fixing ring close to the driving shaft, the connecting rope passes through the guide tube and is connected to the driving rope, the driving rope is connected to the driving shaft by transmission, the driving motor controls the driving rope to be retracted through the driving shaft, and then the driving rope pulls the limiting ring close to the fixing ring, the fixing ring and the limiting ring will close together, clamping the cable rope, playing a self-locking role, and realizing the relative locking between the cable rope and the car.

[0012] Preferably, a display screen is also provided inside the car, and the display screen is electrically connected to the central control module and the display control module. The display screen is a liquid crystal screen, and the display screen can display multiple data such as elevator working information, thereby improving the practicability of the safety management and control system.

[0013] Preferably, the central control device also includes a communication module, and the communication modules are electrically connected to the wireless communication module and the wired communication module respectively. The central control module is connected to the central control background through the wireless communication module and the wired communication module. Through both wired and wireless communication methods, the central control background can monitor the entire elevator in multiple ways, realize the role of Internet of Things intelligence, and improve the reliability of the safety management and control system.

[0014] Preferably, a pressure sensor is provided on the inner wall of the limit ring, and a signal acquisition module is provided between the pressure sensor and the central control module. The radius of the circle formed between the limit ring and the fixed ring is smaller than the radius of the through hole. Therefore, when the limit ring and the fixed ring work together to clamp the cable rope, the pressure sensor will collect the pressure signal, and then the signal will be collected and transmitted to the central control module through the signal acquisition module. The central control module can detect that the self-locking of the cable rope is effective.

[0015] Preferably, a reset assembly is provided between the limiting ring and the fixing ring, so that the limiting ring and the fixing ring can be effectively reset.

[0016] Preferably, a guide ring is provided between the fixing plate and the driving rope, and the driving rope passes through the guide ring, and the guide ring can play a wired guiding role for the driving rope.

[0017] Preferably, a wireless communication unit is also provided on the base, and the wireless communication unit is electrically connected to the central control background. The wireless communication unit can transmit the working status of the security management and control device to the central control background in real time.

[0018] The beneficial effects of the present invention are as follows: In the intelligent elevator safety management and control system based on the Internet of Things:

[0019] 1. The central control module is connected to the central control background through the wireless communication module and the wired communication module. Through wired and wireless communication methods, the central control background can monitor the entire elevator in multiple ways, realizing the role of IoT intelligence;

[0020] 2. The emergency brake structure performs emergency braking on the entire car, realizing the safety control function of the elevator;

[0021] 3. The self-locking structure can clamp the cable rope, which plays a self-locking role and realizes the relative locking between the cable rope and the car;

[0022] 4. Self-locking and braking are completed simultaneously by a drive motor, which improves the continuity of the action. In addition, the safety control function of the elevator can be fully controlled through a drive signal, reducing the safety control risks caused by signal transmission errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the safety control device of the present invention;

[0026] Figure 3 The present invention Figure 2 A magnified view of part A;

[0027] Figure 4 The present invention Figure 2 A magnified view of part B;

[0028] Figure 5 It is a system principle diagram of the central control device of the present invention. DETAILED DESCRIPTION

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0030] like Figure 1-Figure 5 As shown, an intelligent elevator safety control system based on the Internet of Things includes a car 1, a central control device 2 and a safety control device 3, wherein the central control device 2 is arranged inside the car 1, the safety control device 3 is arranged on the top of the car 1, the central control device 2 is electrically connected to the safety control device 3, and the safety control device 3 includes a base 4 fixed on the top of the car 1, a driving motor is arranged inside the base 4, a driving shaft 10 is arranged on the output shaft of the driving motor, and the driving shaft 10 is connected to the driving wheel 5 in a transmission manner, and four cams 6 are evenly arranged on the periphery of the driving wheel 5, and an emergency brake structure is arranged on one side of the four cams 6, and the emergency brake structure includes a moving plate 7, two push rods 8, a drill rod 14 and a drill bit 15, the moving plate 7 is arranged on one side of the cam 6, the two push rods 8 are in the same moving direction as the moving plate 7 and are fixed on one side of the moving plate 7, and two drill rods 14 are arranged at the end of each push rod 8, and the drill bit 15 is fixed at the end of the drill rod 14. Four self-locking structures are also arranged on the base 4, and the four self-locking structures are all connected in a transmission manner to the driving shaft 10 of the driving motor.

[0031] The working principle of the safety control device is that the driving motor controls the rotation of the driving wheel 5 through the driving shaft 10, and the driving wheel 5 will synchronously control the rotation of the four cams 6, so that the four movable plates 7 move outward synchronously, and the movable plates 7 are then driven by the push rod 8 and the drill rod 14, so that the drill bit 15 approaches the car shaft on the periphery of the car 1, and at the same time, holes are drilled and fixed, and the entire car 1 is emergency braked, realizing the safety control function of the elevator; at the same time, the driving motor will synchronously control the four self-locking structures to perform emergency locking on the cable rope, realizing the relative locking between the cable rope and the car 1, and further improving the safety control function of the elevator.

[0032] The central control device 2 includes a central control module and a battery. A motor drive module is provided between the central control module and the drive motor. A working power module and a power collection module are provided between the central control module and the battery. The battery provides electric energy to the electrical equipment inside the car 1, which can be converted into various working voltages through the working power module to ensure the reliable operation of various electrical equipment. In addition, part of the battery is used for emergency operation of the drive motor alone. The power collection module is used to monitor the electric energy of the battery in real time to ensure that the battery has sufficient electric energy when the drive motor is working.

[0033] In a specific embodiment, two limiting tubes 9 are provided on the push rod 8. The push rod 8 moves on the base 4 under the action of the limiting tubes 9. A circle of external threads is provided on the outer periphery of the drill rod 14. A threaded sleeve 16 is sleeved on the outer periphery of the drill rod 14. The threaded sleeve 16 is fixed on the base 4. The drill rod 14 passes through the threaded sleeve 16. The external threads match the internal threads on the inner wall of the threaded sleeve 16. The drill rod 14 is rotatably connected to the push rod 8. When the push rod 8 moves forward, the limiting tube 9 is used for limiting protection. At the same time, when the drill rod 14 moves, transmission occurs between the threaded sleeve 16, so that the drill rod 14 controls the rotation of the drill bit 15, thereby achieving the fixation between the entire base 4 and the car shaft, thereby achieving an emergency braking effect.

[0034] In a specific embodiment, the self-locking structure includes a fixing plate 17, a through hole 21 is provided on the fixing plate 17, a fixing rod 22 is provided inside the through hole 21, the cable of the car 1 passes through the through hole 21 and is fixedly connected to the fixing rod 22, a fixing ring 18 and a limiting ring 19 are provided on the inner wall of the through hole 21, the fixing ring 18 and the limiting ring 19 are both arc-shaped, the fixing ring 18 is fixed on the inner wall of the through hole 21, the limiting ring 19 is located opposite to the fixing ring 18, a connecting rope 20 is provided at both ends of the limiting ring 19, a guide tube 23 is provided on the side of the fixing ring 18 close to the driving shaft 10, the connecting rope 20 passes through the guide tube 23 and is connected to the driving rope 11, the driving rope 11 is transmission-connected to the driving shaft 10, the driving motor controls the driving rope 11 to be retracted through the driving shaft 10, and then the driving rope 11 pulls the limiting ring 19 to approach the fixing ring 18, the fixing ring 18 and the limiting ring 19 will be closed, clamping the cable rope, playing a self-locking role, and realizing the relative locking between the cable rope and the car 1.

[0035] In a specific embodiment, a display screen is also provided inside the car 1, and the display screen is electrically connected to the central control module and the display control module. The display screen is a liquid crystal screen, and the display screen can display multiple data such as elevator working information, thereby improving the practicality of the safety management and control system.

[0036] In a specific embodiment, the central control device 2 also includes a communication module, and the communication modules are electrically connected to the wireless communication module and the wired communication module respectively. The central control module is connected to the central control background through the wireless communication module and the wired communication module. Through both wired and wireless communication methods, the central control background can monitor the entire elevator in multiple ways, realize the role of IoT intelligence, and improve the reliability of the safety management and control system.

[0037] In a specific embodiment, a pressure sensor 24 is provided on the inner wall of the limit ring 19, and a signal acquisition module is provided between the pressure sensor 24 and the central control module. The radius of the circle formed between the limit ring 19 and the fixed ring 18 is smaller than the radius of the through hole 21. Therefore, when the limit ring 19 and the fixed ring 18 work together to clamp the cable rope, the pressure sensor 24 will collect the pressure signal, and then the signal acquisition module will collect and transmit the signal to the central control module, and the central control module will be able to detect that the self-locking of the cable rope is effective.

[0038] In a specific embodiment, a reset assembly is provided between the limit ring and the fixing ring 18 , so that the limit ring and the fixing ring 18 can be effectively reset.

[0039] In a specific embodiment, a guide ring 12 is further provided between the fixing plate 17 and the driving rope, and the driving rope passes through the guide ring 12 . The guide ring 12 can play a wired guiding role for the driving rope.

[0040] In a specific embodiment, a wireless communication unit 13 is further provided on the base, and the wireless communication unit 13 is electrically connected to the central control background. The wireless communication unit 13 can transmit the working status of the security control device to the central control background in real time.

[0041] The above is based on the present invention as an inspiration. Through the above description, relevant staff can make various changes and modifications without departing from the technical idea of ​​this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An intelligent elevator safety management and control system based on the Internet of Things, characterized by: It includes a car, a central control device and a safety control device, wherein the central control device is arranged inside the car, the safety control device is arranged on the top of the car, and the central control device is electrically connected to the safety control device; The safety control device includes a base fixed on the top of the car, a driving motor is arranged inside the base, a driving shaft is arranged on the output shaft of the driving motor, the driving shaft is connected to the driving wheel, four cams are evenly arranged on the outer periphery of the driving wheel, one side of each of the four cams is provided with an emergency brake structure, the emergency brake structure includes a moving plate, two push rods, a drill rod and a drill bit, the moving plate is arranged on one side of the cam, the two push rods are in the same moving direction as the moving plate and are fixed on one side of the moving plate, two drill rods are arranged at the end of each push rod, and the drill bit is fixed at the end of the drill rod; The base is also provided with four self-locking structures, and the four self-locking structures are all connected to the driving shaft of the driving motor; The central control device includes a central control module and a battery. A motor drive module is arranged between the central control module and the drive motor. A working power supply module and a power collection module are arranged between the central control module and the battery.

2. The intelligent elevator safety management and control system based on the Internet of Things according to claim 1 is characterized in that: The push rod is provided with two limiting tubes, and the push rod moves on the base under the action of the limiting tubes. The outer circumference of the drill rod is provided with a circle of external threads, and the outer circumference of the drill rod is provided with a threaded sleeve, which is fixed on the base. The drill rod passes through the threaded sleeve, and the external threads match the internal threads on the inner wall of the threaded sleeve. The drill rod is rotatably connected to the push rod.

3. The intelligent elevator safety management and control system based on the Internet of Things according to claim 1 is characterized in that: The self-locking structure includes a fixing plate, a through hole is provided on the fixing plate, a fixing rod is provided inside the through hole, the cable of the car passes through the through hole and is fixedly connected to the fixing rod, a fixing ring and a limiting ring are provided on the inner wall of the through hole, both of the fixing ring and the limiting ring are arc-shaped, the fixing ring is fixed to the inner wall of the through hole, the limiting ring is located opposite to the fixing ring, a connecting rope is provided at both ends of the limiting ring, a guide tube is provided on the side of the fixing ring close to the driving shaft, the connecting rope passes through the guide tube and is connected to the driving rope, and the driving rope is connected to the driving shaft in a transmission manner.

4. The intelligent elevator safety management and control system based on the Internet of Things according to claim 1 is characterized in that: A display screen is also provided inside the elevator car. The display screen is electrically connected to the central control module and the display control module, and the display screen is a liquid crystal screen.

5. The intelligent elevator safety management and control system based on the Internet of Things according to claim 1 is characterized in that: The central control device also includes a communication module, which is electrically connected to the wireless communication module and the wired communication module respectively. The central control module is connected to the central control background through the wireless communication module and the wired communication module.

6. The intelligent elevator safety management and control system based on the Internet of Things according to claim 3 is characterized in that: A pressure sensor is arranged on the inner wall of the limit ring, and a signal acquisition module is arranged between the pressure sensor and the central control module.

7. The intelligent elevator safety management and control system based on the Internet of Things according to claim 3 is characterized in that: A reset assembly is arranged between the limiting ring and the fixing ring.

8. The intelligent elevator safety management and control system based on the Internet of Things according to claim 3 is characterized by: A guide ring is also provided between the fixing plate and the driving rope, and the driving rope passes through the guide ring.

9. The intelligent elevator safety management and control system based on the Internet of Things according to claim 1 is characterized in that: The base is also provided with a wireless communication unit, which is electrically connected to the central control background.

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