Safety detection method and detection system for tower crane lifting, luffing and slewing motion

Abstract

The invention discloses a safety detection method for the lifting, luffing and slewing motion of a tower crane, which comprises that when the tower crane is in a powered-on running state, a black box board detects the mechanical limit state and the electronic limit state of the tower crane every 80ms to 120ms, and regulates the running state of the lifting motor, the slewing motor and the luffing motor in the tower crane according to the mechanical limit state and the electronic limit state; the detection system comprises a black box board, a lifting mechanical limiter, a travel switch, a distance sensor, a weighing sensor, a torque sensor and a data input module; the data input module is electrically connected to the black box board for inputting calibrated data; the lifting mechanical limiter, the travel switch, the distance sensor, the weighing sensor and the torque sensor are all electrically connected to the black box board for data interaction; the black box board is electrically connected to a driving module, and the driving module is electrically connected to a lifting motor, a slewing motor and a luffing motor. The invention has the advantage of high safety.

Description

Technical Field

[0001] The present invention relates to the field of tower crane detection, in particular to a safety detection method and a detection system for the lifting, luffing and slewing motion of a tower crane. Background Art

[0002] At present, tower cranes are indispensable equipment for high-rise buildings. They can lift and transport materials and equipment. However, existing tower cranes generally use mechanical limiters to warn and limit the lifting and amplitude change of cranes. The lifting, rotation and amplitude change speeds of tower cranes need to be controlled by skilled workers based on experience. The lifting, rotation and amplitude change speeds of tower cranes in different lifting states are difficult to control, which may easily cause safety hazards. Moreover, the lifting, amplitude change and rotation movement states of tower cranes are only detected by mechanical limiters. When mechanical limiters have fault errors, they are difficult to detect and may easily cause safety hazards. Therefore, existing tower cranes have the problem of low safety. Summary of the invention

[0003] The purpose of the present invention is to provide a safety detection method and detection system for the lifting, luffing and slewing motion of a tower crane. The present invention performs mechanical and electronic dual detection on the lifting, luffing and slewing motion of the tower crane and limits the motion of the tower crane according to different states of the tower crane, thereby ensuring the safety of the tower crane.

[0004] The technical solution of the present invention is a safety detection method for tower crane lifting, luffing and slewing motion, comprising:

[0005] When the tower crane is powered on, the black box board detects the limit status of the tower crane every 80ms to 120ms, and adjusts the running status of the tower crane according to the limit status;

[0006] When the black box board detects that the tower crane is in the state of the lifting mechanical upper limit, the lifting mechanical lower limit, the lifting electronic upper limit or the lifting electronic lower limit, the lifting action of the tower crane is stopped;

[0007] When the black box board detects that the tower crane is in the lifting mechanical deceleration or lifting electronic deceleration, the lifting action of the tower crane is restricted, and the maximum operating gear of the lifting motor is the first gear;

[0008] When the black box detects that the tower crane is at 110% mechanical weight or 105% electronic weight, the tower crane's ascending action and luffing forward action are stopped, the maximum descending gear of the hoisting motor is limited to the second gear, the maximum operating gear of the slewing motor is limited to the second gear, and the maximum operating gear of the luffing motor is limited to the second gear;

[0009] When the black box detects that the tower crane is at 80% mechanical weight or 90% electronic weight, the maximum operating gear of the hoisting motor is limited to the third gear, the maximum operating gear of the slewing motor is limited to the third gear, and the maximum operating gear of the luffing motor is limited to the second gear;

[0010] When the black box detects that the tower crane is at 50% mechanical weight or 50% electronic weight, the maximum operating gear of the hoisting motor is limited to the fourth gear, the maximum operating gear of the slewing motor is limited to the fourth gear, and the maximum operating gear of the luffing motor is limited to the third gear;

[0011] When the black box detects that the tower crane is at 110% mechanical torque or 105% electronic torque, the tower crane's ascending action and luffing forward action are stopped, and the maximum operating gear of the slewing motor is limited to the second gear;

[0012] When the black box detects that the tower crane is at 100% mechanical torque or 100% electronic torque, the maximum operating gear of the hoisting motor is limited to the third gear, the maximum operating gear of the slewing motor is limited to the second gear, and the maximum operating gear of the luffing motor is limited to the second gear;

[0013] When the black box detects that the tower crane is at 80% mechanical torque or 80% electronic torque, the maximum operating gear of the hoisting motor is limited to the fourth gear, the maximum operating gear of the slewing motor is limited to the second gear, and the maximum operating gear of the luffing motor is limited to the second gear;

[0014] The black box panel detects the tower crane's inclination angle, left turn angle, right turn angle and wind speed, and displays and issues voice alarms.

[0015] In the aforementioned safety detection method for the lifting and swinging motion of a tower crane, the lifting mechanical upper limit, the lifting mechanical lower limit and the lifting mechanical deceleration are detected by the lifting mechanical limiter, and the mechanical weight and the mechanical torque are both detected by the travel switch; the lifting electronic upper limit, the lifting electronic lower limit and the lifting electronic deceleration are all detected by the distance sensor; the electronic weight is detected by the weighing sensor; and the electronic torque is detected by the torque sensor.

[0016] In the aforementioned safety detection method for the lifting, luffing and rotating motion of the tower crane, the lifting speed of the tower crane is 2m / min when the lifting motor is in the first gear, the lifting speed of the tower crane is 4m / min when the lifting motor is in the second gear, the lifting speed of the tower crane is 6m / min when the lifting motor is in the third gear, and the lifting speed of the tower crane is 8m / min when the lifting motor is in the fourth gear; the rotating speed of the tower crane is 0.2r / min when the slewing motor is in the first gear, the rotating speed of the tower crane is 0.4r / min when the slewing motor is in the second gear, the rotating speed of the tower crane is 0.6r / min when the slewing motor is in the third gear, and the rotating speed of the tower crane is 0.8r / min when the slewing motor is in the fourth gear; the luffing speed of the tower crane is 25m / min when the luffing motor is in the first gear, and the luffing speed of the tower crane is 38m / min when the luffing motor is in the second gear.

[0017] The detection system constructed according to the aforementioned safety detection method for the lifting, luffing and rotating motion of a tower crane includes a black box board, a lifting mechanical limiter, a travel switch, a distance sensor, a weighing sensor, a torque sensor and a data input module; the data input module is electrically connected to the black box board for inputting calibrated data; the lifting mechanical limiter, the travel switch, the distance sensor, the weighing sensor and the torque sensor are all electrically connected to the black box board for data interaction; the black box board is electrically connected to a drive module, and the drive module is electrically connected to a lifting motor, a rotating motor and a luffing motor.

[0018] In the aforementioned detection system, the lifting mechanical limiter is connected to the lifting motor through mechanical transmission, and reflects the lifting height to the black box board in a mechanical transmission manner.

[0019] In the aforementioned detection system, the travel switch reflects the mechanical weight and mechanical torque to the black box board through the deformation degree of the metal structure on the tower crane.

[0020] Compared with the prior art, the present invention detects the limit state of the tower crane once every 80ms to 120ms through the black box board, and can timely adjust the running state of the tower crane according to the limit state; the state of the tower crane is detected by mechanical detection and electronic detection in a dual synchronous manner, so that the black box board can limit the highest gear of the hoisting motor, the rotary motor and the variable amplitude motor, thereby ensuring the control safety; the inclination angle, left turn angle, right turn angle and wind speed of the tower crane can all be displayed, and a voice alarm can be issued when the value is too large, thereby ensuring safety. Therefore, the present invention has the advantage of high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a flow chart of the present invention.

[0022] The markings in the attached drawings are: 1-black box plate, 2-lifting mechanical limiter, 3-travel switch, 4-distance sensor, 5-weighing sensor, 6-torque sensor, 7-data input module, 8-driving module, 9-lifting motor, 10-rotating motor, 11-amplitude motor. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0024] Embodiment. A safety detection method for tower crane lifting, luffing and slewing motion, comprising:

[0025] When the tower crane is powered on, the black box board detects the limit status of the tower crane every 80ms to 120ms, and adjusts the running status of the tower crane according to the limit status;

[0026] When the black box board detects that the tower crane is in the state of the lifting mechanical upper limit, the lifting mechanical lower limit, the lifting electronic upper limit or the lifting electronic lower limit, the lifting action of the tower crane is stopped;

[0027] When the black box board detects that the tower crane is in the lifting mechanical deceleration or lifting electronic deceleration, the lifting action of the tower crane is restricted, and the maximum operating gear of the lifting motor is the first gear;

[0028] When the black box detects that the tower crane is at 110% mechanical weight or 105% electronic weight, the tower crane's ascending action and luffing forward action are stopped, the maximum descending gear of the hoisting motor is limited to the second gear, the maximum operating gear of the slewing motor is limited to the second gear, and the maximum operating gear of the luffing motor is limited to the second gear;

[0029] When the black box detects that the tower crane is at 80% mechanical weight or 90% electronic weight, the maximum operating gear of the hoisting motor is limited to the third gear, the maximum operating gear of the slewing motor is limited to the third gear, and the maximum operating gear of the luffing motor is limited to the second gear;

[0030] When the black box detects that the tower crane is at 50% mechanical weight or 50% electronic weight, the maximum operating gear of the hoisting motor is limited to the fourth gear, the maximum operating gear of the slewing motor is limited to the fourth gear, and the maximum operating gear of the luffing motor is limited to the third gear;

[0031] When the black box detects that the tower crane is at 110% mechanical torque or 105% electronic torque, the tower crane's ascending action and luffing forward action are stopped, and the maximum operating gear of the slewing motor is limited to the second gear;

[0032] When the black box detects that the tower crane is at 100% mechanical torque or 100% electronic torque, the maximum operating gear of the hoisting motor is limited to the third gear, the maximum operating gear of the slewing motor is limited to the second gear, and the maximum operating gear of the luffing motor is limited to the second gear;

[0033] When the black box detects that the tower crane is at 80% mechanical torque or 80% electronic torque, the maximum operating gear of the hoisting motor is limited to the fourth gear, the maximum operating gear of the slewing motor is limited to the second gear, and the maximum operating gear of the luffing motor is limited to the second gear;

[0034] The black box panel detects the tower crane's inclination angle, left turn angle, right turn angle and wind speed, and displays and issues voice alarms.

[0035] The upper limit of the lifting machinery, the lower limit of the lifting machinery and the deceleration of the lifting machinery are detected by the lifting machinery limiter, and the mechanical weight and mechanical torque are detected by the travel switch; the upper limit of the lifting electronics, the lower limit of the lifting electronics and the deceleration of the lifting electronics are detected by the distance sensor; the electronic weight is detected by the weighing sensor; the electronic torque is detected by the torque sensor; when the lifting motor is in the first gear, the lifting speed of the tower crane is 2m / min, when the lifting motor is in the second gear, the lifting speed of the tower crane is 4m / min, and when the lifting motor is in the third gear The lifting speed is 6m / min, and the lifting speed is 8m / min when the lifting motor is in the fourth gear; the slewing speed of the tower crane is 0.2r / min when the slewing motor is in the first gear, the slewing speed of the tower crane is 0.4r / min when the slewing motor is in the second gear, the slewing speed of the tower crane is 0.6r / min when the slewing motor is in the third gear, and the slewing speed of the tower crane is 0.8r / min when the slewing motor is in the fourth gear; the luffing speed of the tower crane is 25m / min when the luffing motor is in the first gear, and the luffing speed of the tower crane is 38m / min when the luffing motor is in the second gear.

[0036] The detection system constructed according to the above-mentioned safety detection method for tower crane lifting, luffing and slewing motion is composed as follows: Figure 1 As shown, it includes a black box board 1, a lifting mechanical limiter 2, a travel switch 3, a distance sensor 4, a weighing sensor 5, a torque sensor 6 and a data input module 7; the data input module 7 is electrically connected to the black box board 1 for inputting calibrated data; the lifting mechanical limiter 2, the travel switch 3, the distance sensor 4, the weighing sensor 5, the torque sensor 6 are all electrically connected to the black box board 1 for data interaction; the black box board 1 is electrically connected to a driving module 8, and the driving module 8 is electrically connected to a lifting motor 9, a rotary motor 10 and a variable amplitude motor 11.

[0037] The lifting mechanical limiter 2 is connected to the lifting motor 9 through mechanical transmission, and reflects the lifting height to the black box plate 1 in a mechanical transmission manner; the travel switch 3 reflects the mechanical weight and mechanical torque to the black box plate 1 through the deformation degree of the metal structure on the tower crane.

[0038] Working principle: the data input module 7 can input the calibration data into the black box board 1, so as to calibrate the electronic upper limit of lifting, the electronic lower limit of lifting, the electronic upper deceleration of lifting, the electronic weight and the electronic torque; the lifting mechanical limiter 2 can detect the lifting height through the lifting motor 9 connected by mechanical transmission, and transmit the signal to the black box board 1; the travel switch 3 can reflect the mechanical weight and mechanical torque to the black box board 1 according to the deformation degree of the metal structure on the tower crane; the distance sensor 4 can detect the lifting height from the electronic aspect, the weighing sensor 5 can detect the electronic weight, and the torque sensor 6 can detect the electronic torque; the black box board 1 limits the highest gear of the lifting motor 9, the rotary motor 10 and the variable amplitude motor 11 through the driving motor 8 according to the state of the tower crane, so as to avoid the operating errors of the tower crane staff and ensure the safety; the inclination angle, left turn angle, right turn angle and wind speed of the tower crane can be detected and displayed, and a voice alarm can be issued when the value is too large, so as to ensure the safety.

Claims

1. A safety detection method for tower crane lifting, luffing and slewing motion, characterized by: When the tower crane is powered on, the black box board detects the limit status of the tower crane every 80ms to 120ms, and adjusts the running status of the tower crane according to the limit status; When the black box board detects that the tower crane is in the state of the lifting mechanical upper limit, the lifting mechanical lower limit, the lifting electronic upper limit or the lifting electronic lower limit, the lifting action of the tower crane is stopped; When the black box board detects that the tower crane is in the lifting mechanical deceleration or lifting electronic deceleration, the lifting action of the tower crane is restricted, and the maximum operating gear of the lifting motor is the first gear; When the black box detects that the tower crane is at 110% mechanical weight or 105% electronic weight, the tower crane's ascending action and luffing forward action are stopped, the maximum descending gear of the hoisting motor is limited to the second gear, the maximum operating gear of the slewing motor is limited to the second gear, and the maximum operating gear of the luffing motor is limited to the second gear; When the black box detects that the tower crane is at 80% mechanical weight or 90% electronic weight, the maximum operating gear of the hoisting motor is limited to the third gear, the maximum operating gear of the slewing motor is limited to the third gear, and the maximum operating gear of the luffing motor is limited to the second gear; When the black box detects that the tower crane is at 50% mechanical weight or 50% electronic weight, the maximum operating gear of the hoisting motor is limited to the fourth gear, the maximum operating gear of the slewing motor is limited to the fourth gear, and the maximum operating gear of the luffing motor is limited to the third gear; When the black box detects that the tower crane is at 110% mechanical torque or 105% electronic torque, the tower crane's ascending action and luffing forward action are stopped, and the maximum operating gear of the slewing motor is limited to the second gear; When the black box detects that the tower crane is at 100% mechanical torque or 100% electronic torque, the maximum operating gear of the hoisting motor is limited to the third gear, the maximum operating gear of the slewing motor is limited to the second gear, and the maximum operating gear of the luffing motor is limited to the second gear; When the black box detects that the tower crane is at 80% mechanical torque or 80% electronic torque, the maximum operating gear of the hoisting motor is limited to the fourth gear, the maximum operating gear of the slewing motor is limited to the second gear, and the maximum operating gear of the luffing motor is limited to the second gear; The black box panel detects the tower crane inclination angle, left turn angle, right turn angle and wind speed, and displays and issues voice alarms; When the hoisting motor is in the first gear, the hoisting speed of the tower crane is 2m / min, when the hoisting motor is in the second gear, the hoisting speed of the tower crane is 4m / min, when the hoisting motor is in the third gear, the hoisting speed is 6m / min, and when the hoisting motor is in the fourth gear, the hoisting speed is 8m / min; when the slewing motor is in the first gear, the slewing speed of the tower crane is 0.2r / min, when the slewing motor is in the second gear, the slewing speed of the tower crane is 0.4r / min, when the slewing motor is in the third gear, the slewing speed of the tower crane is 0.6r / min, and when the slewing motor is in the fourth gear, the slewing speed of the tower crane is 0.8r / min; when the luffing motor is in the first gear, the luffing speed of the tower crane is 25m / min, and when the luffing motor is in the second gear, the luffing speed of the tower crane is 38m / min.

2. The safety detection method for tower crane lifting, luffing and slewing motion according to claim 1 is characterized in that: The upper limit position, lower limit position and upward deceleration of the lifting machinery are detected by the lifting machinery limiter, and the mechanical weight and mechanical torque are detected by the travel switch; the upper limit position, lower limit position and upward deceleration of the lifting electronics are detected by the distance sensor; the electronic weight is detected by the weighing sensor; the electronic torque is detected by the torque sensor.

3. The detection system constructed according to the safety detection method for tower crane lifting, luffing and slewing motion according to claim 1 or 2 is characterized in that: The invention comprises a black box board (1), a lifting mechanical limiter (2), a travel switch (3), a distance sensor (4), a weighing sensor (5), a torque sensor (6) and a data input module (7); the data input module (7) is electrically connected to the black box board (1) and is used for inputting calibrated data; the lifting mechanical limiter (2), the travel switch (3), the distance sensor (4), the weighing sensor (5) and the torque sensor (6) are all electrically connected to the black box board (1) for data exchange; the black box board (1) is electrically connected to a driving module (8), and the driving module (8) is electrically connected to a lifting motor (9), a rotary motor (10) and a variable amplitude motor (11).

4. The detection system according to claim 3, characterized in that: The lifting mechanical limiter (2) is connected to the lifting motor (9) through mechanical transmission, and reflects the lifting height to the black box plate (1) in a mechanical transmission manner.

5. The detection system according to claim 3, characterized in that: The travel switch (3) reflects the mechanical weight and mechanical torque to the black box plate (1) through the degree of deformation of the metal structure on the tower crane.

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