Crane hook beam balance detection method and system

Abstract

The invention discloses a crane hook beam balance detection method, relates to the field of metallurgy, and solves the technical problem that an existing hook beam does not have an early warning function when the existing hook beam is unbalanced. The method comprises the following steps: acquiring a first real-time weighing value at a first cylinder fixed pulley and a second real-time weighing value at a second cylinder fixed pulley; when the first real-time weighing value is larger than or equal to a set weight early warning value and the first real-time weighing value is not equal to the second real-time weighing value, first early warning is started; when the second real-time weighing value is larger than or equal to the weight early warning value and the second real-time weighing value is not equal to the first real-time weighing value, second early warning is started; and when the second real-time weighing value is equal to the first real-time weighing value and both the second real-time weighing value and the first real-time weighing value are smaller than the weight early warning value, early warning is not started. The invention further discloses a crane hook beam balance detection system. The automatic level of lifting operation is improved, and the production efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the field of metallurgy, and more particularly to a method and system for detecting balance of a crane hook beam. Background Art

[0002] When the load is borne by multiple wire ropes, there is no effective system to detect the force balance of each wire rope. When the hook beam is unbalanced, various accidents usually occur. When an accident occurs in the hook beam, it is impossible to issue an alarm in advance to remind the operator to take appropriate measures. For example, when the forces transmitted by the two fixed pulleys are not completely equal, it may cause deviations in the measurement results of the weighing sensor, thereby affecting the accuracy of the measurement. In addition, maintenance will be more difficult. When a fault occurs, it is impossible to determine which weight sensor has a problem, and troubleshooting is time-consuming and labor-intensive. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a crane hook beam balance detection method and system in view of the deficiencies in the prior art, so as to solve the technical problem that the prior art hook beam has no early warning function when it is unbalanced.

[0004] A crane hook beam balance detection method according to the present invention obtains a first real-time weighing value of a first steel wire rope and a second real-time weighing value of a second steel wire rope;

[0005] When the first real-time weighing value is greater than or equal to the set weight warning value and the first real-time weighing value is not equal to the second real-time weighing value, a first warning is initiated;

[0006] When the second real-time weighing value is greater than or equal to the weight warning value and the second real-time weighing value is not equal to the first real-time weighing value, a second warning is initiated;

[0007] When the second real-time weighing value is equal to the first real-time weighing value and both the second real-time weighing value and the first real-time weighing value are smaller than the weight warning value, no warning is initiated.

[0008] As a further improvement, a first angular velocity value of the hook beam close to the first cylindrical fixed pulley and a second angular velocity value of the hook beam close to the second cylindrical fixed pulley are obtained, and a standard range of angular velocity values ​​is set;

[0009] When the first angular velocity value is greater than the maximum value of the standard range of angular velocity values ​​or the first angular velocity value is less than the minimum value of the standard range of angular velocity values, the first warning is initiated;

[0010] When the second angular velocity value is greater than the maximum value of the standard range of angular velocity values ​​or the second angular velocity value is less than the minimum value of the standard range of angular velocity values, the second warning is initiated;

[0011] When the first angular velocity value and the second angular velocity value are both within the standard range of angular velocity values, no warning is initiated.

[0012] Furthermore, the first warning is a flashing of a first warning light on the control interface, and the second warning is a flashing of a second warning light on the control interface.

[0013] A crane hook beam balance detection system, comprising:

[0014] A first weight sensor, mounted at the first cylindrical fixed pulley, for obtaining a first real-time weighing value signal;

[0015] A second weight sensor is installed at the second cylindrical fixed pulley and is used to obtain a second real-time weighing value signal;

[0016] A first yaw rate sensor is installed on a side of the hook beam close to the first weight sensor, and is used to obtain a first angular velocity value signal;

[0017] A second yaw rate sensor is installed on a side of the hook beam close to the second weight sensor, and is used to obtain a second angular velocity value signal;

[0018] The controller is used to receive the first real-time weighing value signal, the second real-time weighing value signal, the first angular velocity value signal and the second angular velocity value signal, and apply a crane hook beam balance detection method as described above to detect whether the hook beam is balanced.

[0019] As a further improvement, the controller is a PLC.

[0020] Beneficial Effects

[0021] The advantages of the present invention are:

[0022] The present invention obtains a first real-time weighing value, a second real-time weighing value, a first angular velocity value, and a second angular velocity value, and compares the first real-time weighing value and the second real-time weighing value with a set weight warning value, and compares the first real-time angular velocity value and the second real-time angular velocity value with a set standard range of angular velocity values, so as to give an early warning to an unbalanced hook beam. The first early warning indicates that the hook beam is tilted toward the side of the first yaw rate sensor, and the second early warning indicates that the hook beam is tilted toward the side of the second yaw rate sensor, thereby achieving accurate monitoring of the balance state of the hook beam, realizing timely detection of the imbalance of the hook beam, avoiding accidents caused by imbalance, thereby improving the automation level of lifting operations, avoiding production interruptions caused by imbalance, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the overall structure and installation diagram of the detection system of the present invention.

[0024] Among them: 1-first cylinder fixed pulley, 2-wire rope cylinder, 3-first weight sensor, 4-second cylinder fixed pulley, 5-second weight sensor, 6-wire rope clamp, 7-first wire rope, 8-crane wheel, 9-hook beam, 10-first yaw rate sensor, 11-second yaw rate sensor, 12-second wire rope. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the embodiments, but it does not constitute any limitation to the present invention. Any limited number of modifications made by anyone within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0026] See also Figure 1 A crane hook beam balance detection method and system of the present invention includes obtaining a first real-time weighing value of a first steel wire rope 7 and a second real-time weighing value of a second steel wire rope 12.

[0027] When the first real-time weighing value is greater than or equal to the set weight warning value and the first real-time weighing value is not equal to the second real-time weighing value, the first warning is activated, indicating that the weight of the hook beam 9 on the side close to the first cylindrical fixed pulley 1 is greater than the other side of the hook beam 9, and there is a risk of unbalanced hook beam 9, and the crane needs to be stopped in time, and then the first steel wire rope 7 and other connecting structures on the side of the hook beam 9 close to the first cylindrical fixed pulley 1 are checked and replaced. The first weight sensor 3 is installed at the connection between the first cylindrical fixed pulley 1 and the first steel wire rope 7, and is used to obtain the first real-time weighing value signal.

[0028] When the second real-time weighing value is greater than or equal to the weight warning value and the second real-time weighing value is not equal to the first real-time weighing value, the second warning is activated, indicating that the weight of the hook beam 9 near the second cylinder fixed pulley 4 is greater than the other side of the hook beam 9, and there is a risk of unbalanced hook beam 9. The crane is stopped in time, and then the second steel wire rope 12 and other connecting structures on the hook beam 9 near the second cylinder fixed pulley 4 are checked and replaced. The second weight sensor 5 is installed at the connection between the second cylinder fixed pulley 4 and the second steel wire rope 12, and is used to obtain the second real-time weighing value signal.

[0029] When the second real-time weighing value is equal to the first real-time weighing value and both the second real-time weighing value and the first real-time weighing value are less than the weight warning value, the warning is not activated, indicating that the hook beam 9 is in a balanced state and does not need to be checked temporarily.

[0030] A first angular velocity value of the hook beam 9 close to the first yaw rate sensor 10 and a second angular velocity value of the hook beam 9 close to the second yaw rate sensor 11 are obtained, and a standard range of angular velocity values ​​is set.

[0031] When the first angular velocity value is greater than the maximum value of the standard range of angular velocity values ​​or the first angular velocity value is less than the minimum value of the standard range of angular velocity values, the first warning is activated, indicating that the first angular velocity value of the hook beam 9 rotating on the side close to the first yaw rate sensor 10 is too large or too small, which may easily cause the two sides of the hook beam 9 to be unbalanced. It is necessary to stop the crane operation in time, and check and replace the connection structure such as the wire rope 7 on the side of the hook beam 9 close to the first yaw rate sensor 10. The first yaw rate sensor 10 is installed on the side of the hook beam 9 close to the first weight sensor 3, and is used to obtain the first angular velocity value signal.

[0032] When the second angular velocity value is greater than the maximum value of the standard range of angular velocity values ​​or the second angular velocity value is less than the minimum value of the standard range of angular velocity values, the second warning is activated, indicating that the second angular velocity value of the hook beam 9 rotating on the side close to the second yaw rate sensor 11 is too large or too small, which may easily cause the two sides of the hook beam 9 to be unbalanced. It is necessary to stop the crane operation in time, and check and replace the connection structure such as the wire rope 7 on the side of the hook beam 9 close to the second yaw rate sensor 11. The second yaw rate sensor 11 is installed on the side of the hook beam 9 close to the second weight sensor 5, and is used to obtain the second angular velocity value signal.

[0033] When the first angular velocity value and the second angular velocity value are both within the standard range of angular velocity values, no warning is initiated, indicating that the hook beam 9 is in a balanced state and does not need to be checked temporarily.

[0034] The first warning is the flashing of the first warning light on the control interface, indicating that a fault occurs on the side of the hook beam 9 close to the first yaw rate sensor 10, and the second warning is the flashing of the second warning light on the control interface, indicating that a fault occurs on the side of the hook beam 9 close to the second yaw rate sensor 11. This accurately reminds the staff of the faulty part of the hook beam 9.

[0035] The yaw rate sensor is a miniature sensor manufactured based on MEMS technology. It is mainly used in the field of inertial measurement. It can measure the angular velocity or angular acceleration of an object when it is rotating. It is widely used in navigation, aerospace, automotive safety, robotics and other fields. The main features of the yaw rate sensor are simple structure, small size, high sensitivity, high precision and strong reliability. The working principle of the yaw rate sensor is to use the technology that combines the piezoelectric effect and the accelerometer principle. It is composed of an accelerometer and a piezoelectric gyroscope. In the case of yaw, the angular velocity of the object will cause the accelerometer to generate a vertical upward force. This part of the force can be converted into the input force of the gyroscope, thereby measuring the angular velocity or angular acceleration of the object.

[0036] The controller is used to receive the first real-time weighing value signal, the second real-time weighing value signal, the first angular velocity value signal and the second angular velocity value signal, and detect whether the hook beam 9 is balanced.

[0037] The controller is a PLC. The signal of each weight sensor of each fixed pulley is transmitted to the PLC. The data of each set of weight sensors are extracted in the PLC for analysis and recording of the balance state data of the hook beam 9, which is used to analyze and evaluate the use of the hook beam 9. The data of each set of weight sensors are analyzed and compared. When the data of each wire rope force system deviates, the warning light on the control interface is displayed in time to remind the personnel on duty.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A crane hook beam balance detection method, characterized in that: The method comprises obtaining a first real-time weighing value of a first steel wire rope and a second real-time weighing value of a second steel wire rope; When the first real-time weighing value is greater than or equal to the set weight warning value and the first real-time weighing value is not equal to the second real-time weighing value, a first warning is initiated; When the second real-time weighing value is greater than or equal to the weight warning value and the second real-time weighing value is not equal to the first real-time weighing value, a second warning is initiated; When the second real-time weighing value is equal to the first real-time weighing value and both the second real-time weighing value and the first real-time weighing value are smaller than the weight warning value, the warning is not initiated.

2. A crane hook beam balance detection method according to claim 1, characterized in that: Obtain a first angular velocity value of a side of the hook beam close to the first cylindrical fixed pulley and a second angular velocity value of a side of the hook beam close to the second cylindrical fixed pulley, and set a standard range of angular velocity values; When the first angular velocity value is greater than the maximum value of the standard range of angular velocity values ​​or the first angular velocity value is less than the minimum value of the standard range of angular velocity values, the first warning is initiated; When the second angular velocity value is greater than the maximum value of the standard range of angular velocity values ​​or the second angular velocity value is less than the minimum value of the standard range of angular velocity values, the second warning is initiated; When the first angular velocity value and the second angular velocity value are both within the standard range of angular velocity values, no warning is initiated.

3. A crane hook beam balance detection method according to claim 1, characterized in that: The first warning is the flashing of a first warning light on the control interface, and the second warning is the flashing of a second warning light on the control interface.

4. A crane hook beam balance detection system, characterized in that: It includes: A first weight sensor is installed at the connection between the first cylindrical fixed pulley and the first steel wire rope, and is used to obtain a first real-time weighing value signal; A second weight sensor is installed at the connection between the second cylindrical fixed pulley and the second steel wire rope, and is used to obtain a second real-time weighing value signal; A first yaw rate sensor is installed on a side of the hook beam close to the first weight sensor, and is used to obtain a first angular velocity value signal; A second yaw rate sensor is installed on a side of the hook beam close to the second weight sensor, and is used to obtain a second angular velocity value signal; A controller is used to receive the first real-time weighing value signal, the second real-time weighing value signal, the first angular velocity value signal and the second angular velocity value signal, and apply a crane hook beam balance detection method as described in claims 1-3 to detect whether the hook beam is balanced.

5. A crane hook beam balance detection system according to claim 4, characterized in that: The controller is a PLC.

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