Height self-adjusting spiral ladder control system for shipping
By designing a spiral ladder control system for ship cargo transportation including spiral ladder height adjustment, hazard alarm and control module, the problem of traditional spiral ladder system being unable to adapt to different cargo needs and lack of safety monitoring is solved, and efficient and safe cargo loading and unloading operations are achieved.
Patent Information
- Application Number
- CN202411618668.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-03-14
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The traditional spiral ladder system cannot adapt to cargo loading and unloading needs of different heights and weights, and lacks intelligent and safety monitoring functions, which increases the workload and safety risks of operators, especially in severe weather and sea conditions.
A spiral ladder control system for ship cargo transportation is designed, including a spiral ladder height adjustment module, a hazard alarm module and a spiral ladder control module. Automatic adjustment of the height of the spiral ladder is achieved through hydraulic pumps, real-time monitoring and alarm is issued, and timely controls the spiral ladder to close and stop lifting.
It realizes rapid and accurate adjustment of the height of the spiral ladder, improves the efficiency and safety of cargo loading and unloading, reduces the difficulty of manual intervention and management, and ensures the safety of personnel and goods in harsh environments.
Smart Images
Figure CN119611652A_ABST
Abstract
Description
Technical Field
[0002] The invention relates to the technical field of spiral ladder control, in particular to a height self-adjusting spiral ladder control system for ship cargo transportation. Background Art
[0003] With the continuous development of global trade, ship transportation, as one of the important logistics methods, undertakes a large number of cargo transportation tasks. However, during ship transportation, cargo loading and unloading operations often face many challenges, such as a wide variety of cargoes, large weight differences, and complex and changeable loading and unloading environments. These challenges not only affect the efficiency of loading and unloading operations, but also increase safety risks during operations. Traditional spiral ladder systems often adopt manual adjustment or fixed height design, which cannot adapt to the loading and unloading needs of cargoes of different heights and weights, and also lack intelligent and safety monitoring functions. Therefore, during loading and unloading operations, operators need to frequently adjust the height and inclination angle of the spiral ladder, which not only increases the workload and time cost, but also may lead to operational errors and safety hazards. In addition, under severe weather and sea conditions, it is more difficult for traditional spiral ladder systems to ensure the stability and safety of operations. Therefore, a height self-adjusting spiral ladder control system for ship cargo transportation is proposed. Summary of the invention
[0004] The present invention aims to solve the technical problem of how to issue an alarm and control the closing of a spiral ladder when a dangerous situation is detected, and automatically adjust the height of the spiral ladder, and provides a height self-adjusting spiral ladder control system for ship cargo transportation.
[0005] The technical solution adopted by the present invention to solve the technical problem is: a control system for a height self-adjusting spiral ladder for ship cargo transportation, comprising a spiral ladder height adjustment module, a danger alarm module, and a spiral ladder control module. The spiral ladder height adjustment module is arranged on the ship, and is used to start a hydraulic pump to adjust the height of the spiral ladder. The danger alarm module is arranged on the ship, and is used to issue an alarm. The spiral ladder control module is arranged on the ship, and is used to control the spiral ladder to close and stop lifting.
[0006] The height adjustment setting of the spiral ladder can realize automatic adjustment of the height of the spiral ladder through a hydraulic pump, so that the spiral ladder can be quickly and accurately adjusted to the appropriate height according to different cargo loading and unloading requirements or tidal changes, which speeds up cargo loading and unloading and greatly improves operating efficiency. Automatic adjustment avoids the safety risks that may be caused by manual adjustment. The danger alarm module immediately issues an alarm when an abnormal situation is detected, reminding the operator to pay attention to safety and take corresponding measures. Through early warning, possible safety accidents can be effectively prevented to ensure the safety of personnel and cargo. The spiral ladder control module quickly controls the spiral ladder to close and stop lifting to prevent the situation from further deteriorating, allowing ship managers to easily monitor severe weather conditions at sea, control the status of the spiral ladder in real time, and achieve remote control, which further ensures the safety of personnel and improves management efficiency.
[0007] Preferably, the spiral ladder height adjustment module includes a first microprocessor, a weighing sensor, a speed sensor, and a height sensor. The weighing sensor is arranged below the ladder board, and is used to measure the deadweight of the ladder board and the weight change value of the ladder board after loading cargo, and send it to the first microprocessor. The speed sensor is arranged on the spiral ladder, and is used to measure the lifting speed of the spiral ladder, and send it to the first microprocessor. The height sensor is arranged on the ship, and is used to measure the current height of the spiral ladder and send it to the first microprocessor. The first microprocessor is arranged on the ship, and is connected to the weighing sensor, the speed sensor, and the height sensor in communication, and is electrically connected to the hydraulic pump, and is used to calculate the adjustment height of the spiral ladder through the wind weight coefficient, the deadweight of the ladder board, the weight change value of the ladder board after loading cargo, the lifting speed of the spiral ladder, and the current height of the spiral ladder through the lifting speed of the spiral ladder, the acceleration of gravity, and the current height of the spiral ladder after receiving the deadweight of the ladder board, the weight change value of the ladder board after loading cargo, the lifting speed of the spiral ladder, and the current height of the spiral ladder. It is used to start the hydraulic pump to adjust the height of the spiral ladder when the adjustment height of the spiral ladder exceeds the preset height threshold.
[0008] The weighing sensor monitors the weight change of the ladder plate in real time, and can detect overload in time to avoid damage or safety accidents caused by overload. The speed sensor can monitor the lifting speed of the spiral ladder to prevent safety hazards caused by too fast or too slow lifting, ensure the efficiency and accuracy of the height adjustment of the spiral ladder, improve the efficiency of cargo loading and unloading, effectively reduce the safety risks caused by improper operation or environmental factors, improve overall safety, reduce manual intervention, and reduce management difficulty.
[0009] Preferably, the calculation formula for adjusting the height of the spiral staircase is: Where H is the adjustable height of the spiral staircase, in meters. is the wind force weight coefficient, which is 1.81, W 1 is the weight of the ladder plate, in kg, ΔW2 V is the weight change of the ladder after loading the cargo, in kg, 1 is the speed of the spiral staircase, in m / s, G is the acceleration due to gravity, in m / s 2 , h is the current height of the spiral ladder, in meters.
[0010] Preferably, the speed sensor is flange-connected to the spiral ladder.
[0011] The flange connection has extremely high strength and stability, preventing loosening or falling off due to vibration or external force, ensuring that the speed sensor can accurately and stably measure the lifting and lowering speed of the spiral ladder.
[0012] Preferably, the danger alarm module includes a barometer, an area measuring instrument, a pressure sensor, a second microprocessor, and a buzzer alarm. The barometer is arranged on the ship to measure the atmospheric pressure and send it to the second microprocessor. The area measuring instrument is arranged on the ladder board to measure the ladder board area and the contact area between the cargo and the ladder board and send it to the second microprocessor. The pressure sensor is arranged on the ladder board to obtain the pressure value of the cargo on the spiral ladder and send it to the second microprocessor. The second microprocessor is arranged on the ship and is connected to the barometer, the area measuring instrument, the pressure sensor, and the spiral ladder height adjustment module for communicating with the barometer, the area measuring instrument, the pressure sensor, and the spiral ladder height adjustment module. After receiving the atmospheric pressure, the ladder board area, the contact area between the cargo and the ladder board, and the pressure value of the cargo on the spiral ladder, the danger coefficient is calculated by the atmospheric pressure, the ladder board area, the contact area between the cargo and the ladder board, the preset spiral ladder lifting safety factor, the pressure value of the cargo on the spiral ladder, and the friction coefficient between the cargo and the ladder board. It is used to start the buzzer alarm when the danger coefficient exceeds the preset danger threshold and the weight change value of the ladder board after loading the cargo exceeds the maximum load threshold of the ladder board. The buzzer alarm is electrically connected to the second microprocessor and is used for issuing an alarm.
[0013] Through real-time monitoring and early warning, the system can promptly detect and respond to potential safety risks, greatly reducing the possibility of safety accidents during the use of spiral ladders. It effectively protects the life safety of operators, improves the efficiency and accuracy of cargo loading and unloading, and reduces safety risks caused by improper operation.
[0014] Preferably, the calculation formula of the risk factor is: Where D is the risk factor, P is the atmospheric pressure, the unit is Pa, S 1 is the area of the ladder tread, in m 2 , S 2 The contact area between the cargo and the ladder board, in m 2, α is the preset spiral ladder lifting safety factor, F is the pressure value of the cargo on the spiral ladder, the unit is N, and f is the friction coefficient between the cargo and the ladder plate, which is 0.18.
[0015] Preferably, the area measuring instrument is made of stainless steel.
[0016] Stainless steel has excellent corrosion resistance and can effectively resist the erosion of corrosive substances such as salt spray, maintain the performance of the area measuring instrument, and ensure measurement accuracy.
[0017] Preferably, the spiral ladder control module includes a wind speed sensor, a rain gauge, a wind pressure sensor, a vibration sensor, and a third microprocessor. The wind speed sensor is arranged on the ship to obtain the current wind speed and send it to the third microprocessor. The rain gauge is arranged on the ship to obtain the current rainfall speed and send it to the third microprocessor. The wind pressure sensor is arranged on the ship to obtain the current wind resistance and send it to the third microprocessor. The vibration sensor is arranged on the ladder board to obtain the ladder board amplitude strength and send it to the third microprocessor. The third microprocessor is arranged on the ship, and is connected to the wind speed sensor, the rain gauge, the wind pressure sensor, the vibration sensor, and the spiral ladder height adjustment module in communication, and is electrically connected to the spiral ladder lifting motor, and is used to calculate the weather index through the spiral ladder lifting speed, the current wind speed, the gravity acceleration, the wind speed weight coefficient, the current rainfall speed, the rain speed weight coefficient, the ladder board amplitude strength, and the current wind resistance after receiving the current wind speed, the current rainfall speed, the current wind resistance, and the ladder board amplitude strength. It is used to turn off the spiral staircase lifting motor, control the spiral staircase to close, and stop lifting when the weather index is lower than the preset weather index threshold and the spiral staircase lifting speed is lower than the current wind speed.
[0018] By real-time monitoring of environmental conditions and the use status of spiral ladders, potential safety risks can be discovered and responded to in a timely manner. In severe weather conditions, the spiral ladder is automatically closed to avoid safety accidents caused by misjudgment or negligence of operators, which helps to reduce the failure and damage of spiral ladders caused by environmental factors and improve the stability and service life of spiral ladders.
[0019] Preferably, the calculation formula of the weather index is: Where T is the weather index, V 2 is the current wind speed in m / s, j 1 is the wind speed weight coefficient, the value is 0.58, R is the current rainfall speed, the unit is m / s, j 2 is the rain speed weight coefficient, with a value of 0.65, A is the ladder plate amplitude intensity, in m, and C is the current wind resistance, in m / s.
[0020] Preferably, the wind speed sensor is an ultrasonic wind speed sensor.
[0021] Ultrasonic wind speed sensors can work normally in various harsh environments, such as low temperature, humid or dry environments. They can maintain stable performance in various application scenarios and provide accurate wind speed data.
[0022] Beneficial effects of the present invention: 1. The setting of spiral ladder height adjustment realizes automatic adjustment of spiral ladder height through hydraulic pump, so that the spiral ladder can be quickly and accurately adjusted to the appropriate height according to different cargo loading and unloading requirements or tidal changes, which speeds up cargo loading and unloading and greatly improves operation efficiency. Automatic adjustment avoids the safety risks that may be caused by manual adjustment. The danger alarm module immediately issues an alarm when an abnormal situation is detected, reminding the operator to pay attention to safety and take corresponding measures. Through early warning, possible safety accidents can be effectively prevented to ensure the safety of personnel and cargo. The spiral ladder control module quickly controls the spiral ladder to close and stop lifting to prevent the situation from further deteriorating, allowing ship managers to easily monitor severe weather conditions at sea, control the status of the spiral ladder in real time, and realize remote control, which further ensures the safety of personnel and improves management efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the structure of the present invention. DETAILED DESCRIPTION
[0024] The concept and technical effects of the present invention will be clearly and completely described below in conjunction with embodiments to fully understand the purpose, features and effects of the present invention.
[0025] like Figure 1 The technical solution adopted by the present invention to solve the technical problem is: a control system for a height self-adjusting spiral ladder for ship cargo transportation, comprising a spiral ladder height adjustment module, a danger alarm module, and a spiral ladder control module. The spiral ladder height adjustment module is arranged on the ship, and is used to start a hydraulic pump to adjust the height of the spiral ladder. The danger alarm module is arranged on the ship, and is used to issue an alarm. The spiral ladder control module is arranged on the ship, and is used to control the spiral ladder to close and stop lifting.
[0026] The height adjustment setting of the spiral ladder can realize automatic adjustment of the height of the spiral ladder through a hydraulic pump, so that the spiral ladder can be quickly and accurately adjusted to the appropriate height according to different cargo loading and unloading requirements or tidal changes, which speeds up cargo loading and unloading and greatly improves operating efficiency. Automatic adjustment avoids the safety risks that may be caused by manual adjustment. The danger alarm module immediately issues an alarm when an abnormal situation is detected, reminding the operator to pay attention to safety and take corresponding measures. Through early warning, possible safety accidents can be effectively prevented to ensure the safety of personnel and cargo. The spiral ladder control module quickly controls the spiral ladder to close and stop lifting to prevent the situation from further deteriorating, allowing ship managers to easily monitor severe weather conditions at sea, control the status of the spiral ladder in real time, and achieve remote control, which further ensures the safety of personnel and improves management efficiency.
[0027] The spiral ladder height adjustment module includes a first microprocessor, a weighing sensor, a speed sensor, and a height sensor. The weighing sensor is arranged under the ladder board, and is used to measure the ladder board's deadweight and the ladder board weight change value after loading cargo, and send it to the first microprocessor. The speed sensor is arranged on the spiral ladder, and is used to measure the spiral ladder's lifting speed, and send it to the first microprocessor. The height sensor is arranged on the ship, and is used to measure the current height of the spiral ladder, and send it to the first microprocessor. The first microprocessor is arranged on the ship, and is connected to the weighing sensor, the speed sensor, and the height sensor in communication, and is electrically connected to the hydraulic pump, and is used to calculate the adjustment height of the spiral ladder through the wind weight coefficient, the ladder board's deadweight, the ladder board weight change value after loading cargo, the spiral ladder lifting speed, and the current height of the spiral ladder through the spiral ladder's current height. When the adjustment height of the spiral ladder exceeds the preset height threshold, the hydraulic pump is started to adjust the height of the spiral ladder.
[0028] The weighing sensor monitors the weight change of the ladder plate in real time, and can detect overload in time to avoid damage or safety accidents caused by overload. The speed sensor can monitor the lifting speed of the spiral ladder to prevent safety hazards caused by too fast or too slow lifting, ensure the efficiency and accuracy of the height adjustment of the spiral ladder, improve the efficiency of cargo loading and unloading, effectively reduce the safety risks caused by improper operation or environmental factors, improve overall safety, reduce manual intervention, and reduce management difficulty.
[0029] The calculation formula for the adjustable height of the spiral ladder is: Where H is the adjustable height of the spiral staircase, in meters. is the wind force weight coefficient, which is 1.81, W 1 is the weight of the ladder plate, in kg, ΔW 2V is the weight change of the ladder after loading the cargo, in kg, 1 is the speed of the spiral staircase, in m / s, G is the acceleration due to gravity, in m / s 2 , h is the current height of the spiral ladder, in meters.
[0030] The speed sensor is connected to the spiral ladder through a flange.
[0031] The flange connection has extremely high strength and stability, preventing loosening or falling off due to vibration or external force, ensuring that the speed sensor can accurately and stably measure the lifting and lowering speed of the spiral ladder.
[0032] The danger alarm module includes a barometer, an area measuring instrument, a pressure sensor, a second microprocessor, and a buzzer alarm. The barometer is arranged on the ship to measure the atmospheric pressure and send it to the second microprocessor. The area measuring instrument is arranged on the ladder board to measure the ladder board area and the contact area between the cargo and the ladder board and send it to the second microprocessor. The pressure sensor is arranged on the ladder board to obtain the pressure value of the cargo on the spiral ladder and send it to the second microprocessor. The second microprocessor is arranged on the ship and is connected to the barometer, the area measuring instrument, the pressure sensor, and the spiral ladder height adjustment module for communication. After receiving the atmospheric pressure, the ladder board area, the contact area between the cargo and the ladder board, and the pressure value of the cargo on the spiral ladder, the danger coefficient is calculated by the atmospheric pressure, the ladder board area, the contact area between the cargo and the ladder board, the preset spiral ladder lifting safety factor, the pressure value of the cargo on the spiral ladder, and the friction coefficient between the cargo and the ladder board. When the danger coefficient exceeds the preset danger threshold and the weight change value of the ladder board after loading the cargo exceeds the maximum load threshold of the ladder board, the buzzer alarm is activated. The buzzer alarm is electrically connected to the second microprocessor for issuing an alarm.
[0033] Through real-time monitoring and early warning, the system can promptly detect and respond to potential safety risks, greatly reducing the possibility of safety accidents during the use of spiral ladders. It effectively protects the life safety of operators, improves the efficiency and accuracy of cargo loading and unloading, and reduces safety risks caused by improper operation.
[0034] The formula for calculating the risk factor is: Where D is the risk factor, P is the atmospheric pressure, the unit is Pa, S 1 is the area of the ladder tread, in m 2 , S 2 The contact area between the cargo and the ladder board, in m 2 , α is the preset spiral ladder lifting safety factor, F is the pressure value of the cargo on the spiral ladder, the unit is N, and f is the friction coefficient between the cargo and the ladder plate, which is 0.18.
[0035] The area measuring instrument is made of stainless steel.
[0036] Stainless steel has excellent corrosion resistance and can effectively resist the erosion of corrosive substances such as salt spray, maintain the performance of the area measuring instrument, and ensure measurement accuracy.
[0037] The spiral ladder control module includes a wind speed sensor, a rain gauge, a wind pressure sensor, a vibration sensor, and a third microprocessor. The wind speed sensor is arranged on the ship to obtain the current wind speed and send it to the third microprocessor. The rain gauge is arranged on the ship to obtain the current rainfall speed and send it to the third microprocessor. The wind pressure sensor is arranged on the ship to obtain the current wind resistance and send it to the third microprocessor. The vibration sensor is arranged on the ladder board to obtain the ladder board amplitude strength and send it to the third microprocessor. The third microprocessor is arranged on the ship, and is connected to the wind speed sensor, the rain gauge, the wind pressure sensor, the vibration sensor, and the spiral ladder height adjustment module in communication, and is electrically connected to the spiral ladder lifting motor, and is used to calculate the weather index through the spiral ladder lifting speed, the current wind speed, the gravity acceleration, the wind speed weight coefficient, the current rainfall speed, the rain speed weight coefficient, the ladder board amplitude strength, and the current wind resistance after receiving the current wind speed, the current rainfall speed, the current wind resistance, and the ladder board amplitude strength. It is used to turn off the spiral staircase lifting motor, control the spiral staircase to close, and stop lifting when the weather index is lower than the preset weather index threshold and the spiral staircase lifting speed is lower than the current wind speed.
[0038] By real-time monitoring of environmental conditions and the use status of spiral ladders, potential safety risks can be discovered and responded to in a timely manner. In severe weather conditions, the spiral ladder is automatically closed to avoid safety accidents caused by misjudgment or negligence of operators, which helps to reduce the failure and damage of spiral ladders caused by environmental factors and improve the stability and service life of spiral ladders.
[0039] The calculation formula of weather index is: Where T is the weather index, V 2 is the current wind speed in m / s, j 1 is the wind speed weight coefficient, the value is 0.58, R is the current rainfall speed, the unit is m / s, j 2 is the rain speed weight coefficient, with a value of 0.65, A is the ladder plate amplitude intensity, in m, and C is the current wind resistance, in m / s.
[0040] The wind speed sensor is an ultrasonic wind speed sensor.
[0041] Ultrasonic wind speed sensors can work normally in various harsh environments, such as low temperature, humid or dry environments. They can maintain stable performance in various application scenarios and provide accurate wind speed data.
[0042] For example, on large ships at sea, there are many types of cargo, large differences in weight, and frequent loading and unloading operations.
[0043] The weighing sensor measures the deadweight of the ladder and the weight change of the ladder after loading the cargo, and sends it to the first microprocessor. The speed sensor measures the lifting speed of the spiral ladder and sends it to the first microprocessor. The height sensor measures the current height of the spiral ladder and sends it to the first microprocessor. After the first microprocessor receives the deadweight of the ladder, the weight change of the ladder after loading the cargo, the lifting speed of the spiral ladder, and the current height of the spiral ladder, it calculates the adjusted height of the spiral ladder in combination with the wind weight coefficient and the gravity acceleration. When the adjusted height of the spiral ladder exceeds the preset height threshold, the first microprocessor starts the hydraulic pump, and the hydraulic pump adjusts the height of the spiral ladder to the loading and unloading position.
[0044] The barometer measures the atmospheric pressure and sends it to the second microprocessor. The area meter measures the area of the ladder plate and the contact area between the cargo and the ladder plate and sends them to the second microprocessor. The pressure sensor obtains the pressure value of the cargo on the spiral ladder and sends it to the second microprocessor. After the second microprocessor receives the atmospheric pressure, the area of the ladder plate, the contact area between the cargo and the ladder plate, and the pressure value of the cargo on the spiral ladder, it calculates the risk factor in combination with the preset spiral ladder lifting safety factor and the friction coefficient between the cargo and the ladder plate. When the risk factor exceeds the preset risk threshold and the weight change value of the ladder plate after loading the cargo exceeds the maximum load threshold of the ladder plate, the second microprocessor starts the buzzer alarm, and the buzzer alarm sounds an alarm to alert the operator. The wind speed sensor obtains the current wind speed and sends it to the third microprocessor. The rain gauge obtains the current rainfall speed and sends it to the third microprocessor. The wind pressure sensor obtains the current wind resistance and sends it to the third microprocessor. The vibration sensor obtains the amplitude strength of the ladder plate and sends it to the third microprocessor.
[0045] When the third microprocessor receives the current wind speed, the current rainfall speed, the current wind resistance, and the amplitude strength of the ladder plate, it calculates the weather index by combining the spiral ladder lifting speed, gravity acceleration, wind speed weight coefficient, and rain speed weight coefficient. When the weather index is lower than the preset weather index threshold and the spiral ladder lifting speed is lower than the current wind speed, the third microprocessor turns off the spiral ladder lifting motor, controls the spiral ladder to close, and stops lifting to ensure the safety of personnel.
[0046] The above embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work shall all fall within the scope of protection of the present invention.
Claims
1. A height self-adjusting spiral ladder control system for ship cargo transportation, characterized in that: It includes a spiral staircase height adjustment module, a danger alarm module, and a spiral staircase control module; The spiral staircase height adjustment module is arranged on the ship and is used to start the hydraulic pump to adjust the height of the spiral staircase; The danger alarm module is arranged on the ship and is used to issue an alarm; The spiral staircase control module is arranged on the ship and is used to control the spiral staircase to close and stop ascending and descending.
2. A height self-adjusting spiral ladder control system for ship cargo transportation according to claim 1, characterized in that : The spiral staircase height adjustment module includes a first microprocessor, a weighing sensor, a speed sensor, and a height sensor; The weighing sensor is arranged under the ladder board, and is used to measure the deadweight of the ladder board and the weight change value of the ladder board after loading the goods, and send it to the first microprocessor; The speed sensor is arranged on the spiral staircase, and is used to measure the lifting speed of the spiral staircase and send it to the first microprocessor; The height sensor is arranged on the ship and is used to measure the current height of the spiral staircase and send it to the first microprocessor; The first microprocessor is arranged on the ship, is communicatively connected with the weighing sensor, the speed sensor, and the height sensor, and is electrically connected with the hydraulic pump. The first microprocessor is used for calculating the adjusted height of the spiral ladder through the wind weight coefficient, the dead weight of the ladder, the changed weight of the ladder after loading cargo, the lifting speed of the spiral ladder, and the current height of the spiral ladder after receiving the dead weight of the ladder, the changed weight of the ladder after loading cargo, the lifting speed of the spiral ladder, the acceleration of gravity, and the current height of the spiral ladder; and is used for starting the hydraulic pump to adjust the height of the spiral ladder when the adjusted height of the spiral ladder exceeds a preset height threshold.
3. A height self-adjusting spiral ladder control system for ship cargo transportation according to claim 2, characterized in that The calculation formula for the height adjustment of the spiral ladder is: Where H is the adjustable height of the spiral staircase, in meters. is the wind weight coefficient, W1 is the ladder weight, in kg, ΔW2 is the weight change of the ladder after loading the cargo, in kg, V1 is the spiral ladder lifting speed, in m / s, G is the gravity acceleration, in m / s 2 , h is the current height of the spiral ladder, in meters.
4. A height self-adjusting spiral ladder control system for ship cargo transportation according to claim 2, characterized in that : The speed sensor is connected to the spiral ladder by a flange.
5. A height self-adjusting spiral ladder control system for ship cargo transportation according to claim 2, characterized in that : The hazard alarm module includes a barometer, an area measuring instrument, a pressure sensor, a second microprocessor, and a buzzer alarm; The barometer is arranged on the ship and is used to measure the atmospheric pressure and send it to the second microprocessor; The area measuring instrument is arranged on the ladder board, and is used to measure the area of the ladder board and the contact area between the goods and the ladder board, and send the same to the second microprocessor; The pressure sensor is arranged on the staircase plate, and is used to obtain the pressure value of the goods on the spiral staircase, and send it to the second microprocessor; The second microprocessor is arranged on the ship, and is in communication connection with the barometer, the area measuring instrument, the pressure sensor, and the spiral ladder height adjustment module, and is used to calculate the risk factor through the atmospheric pressure, the ladder plate area, the contact area between the cargo and the ladder plate, the pressure value of the cargo on the spiral ladder, the preset spiral ladder lifting safety factor, the pressure value of the cargo on the spiral ladder, and the friction coefficient between the cargo and the ladder plate after receiving the atmospheric pressure, the ladder plate area, the contact area between the cargo and the ladder plate, and the preset spiral ladder lifting safety factor, the pressure value of the cargo on the spiral ladder, and the friction coefficient between the cargo and the ladder plate; and is used to start the buzzer alarm when the risk factor exceeds the preset risk threshold and the weight change value of the ladder plate after loading the cargo exceeds the maximum load threshold of the ladder plate; The buzzer alarm is electrically connected to the second microprocessor and is used for issuing an alarm.
6. A height self-adjusting spiral ladder control system for ship cargo transportation according to claim 5, characterized in that The calculation formula of risk factor is: Where D is the risk factor, P is the atmospheric pressure in Pa, S1 is the ladder area in m 2 , S2 is the contact area between the cargo and the ladder board, in m 2 , α is the preset spiral ladder lifting safety factor, F is the pressure value of the cargo on the spiral ladder, the unit is N, and f is the friction coefficient between the cargo and the ladder plate.
7. A height self-adjusting spiral ladder control system for ship cargo transportation according to claim 5, characterized in that :The area measuring instrument is made of stainless steel.
8. A height self-adjusting spiral ladder control system for ship cargo transportation according to claim 2, characterized in that : The spiral staircase control module includes a wind speed sensor, a rain gauge, a wind pressure sensor, a vibration sensor, and a third microprocessor; The wind speed sensor is arranged on the ship and is used to obtain the current wind speed and send it to the third microprocessor; The rain gauge is arranged on the ship and is used to obtain the current rainfall rate and send it to the third microprocessor; The wind pressure sensor is arranged on the ship and is used to obtain the current wind resistance and send it to the third microprocessor; The vibration sensor is arranged on the staircase plate, and is used to obtain the amplitude strength of the staircase plate and send it to the third microprocessor; The third microprocessor is arranged on the ship, is in communication connection with the wind speed sensor, the rain gauge, the wind pressure sensor, the vibration sensor, and the spiral ladder height adjustment module, and is electrically connected with the spiral ladder lifting motor, and is used for calculating the weather index through the spiral ladder lifting speed, the current wind speed, the gravity acceleration, the wind speed weight coefficient, the current rainfall speed, the rainfall speed weight coefficient, the ladder plate amplitude strength, and the current wind resistance size after receiving the current wind speed, the current rainfall speed, the current wind resistance size, and the ladder plate amplitude strength; It is used to turn off the spiral staircase lifting motor, control the spiral staircase to close, and stop lifting when the weather index is lower than the preset weather index threshold and the spiral staircase lifting speed is lower than the current wind speed.
9. A height self-adjusting spiral ladder control system for ship cargo transportation according to claim 8, characterized in that The calculation formula of weather index is: Among them, T is the weather index, V2 is the current wind speed in m / s, j1 is the wind speed weight coefficient, R is the current rainfall speed in m / s, j2 is the rain speed weight coefficient, A is the ladder plate amplitude intensity in m, and C is the current wind resistance in m / s.
10. A height self-adjusting spiral ladder control system for ship cargo transportation according to claim 8, characterized in that :The wind speed sensor is an ultrasonic wind speed sensor.