CN113479776A - Hoisting machinery amplitude monitoring system and method - Google Patents
Hoisting machinery amplitude monitoring system and method Download PDFInfo
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- CN113479776A CN113479776A CN202110867362.0A CN202110867362A CN113479776A CN 113479776 A CN113479776 A CN 113479776A CN 202110867362 A CN202110867362 A CN 202110867362A CN 113479776 A CN113479776 A CN 113479776A
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- sound wave
- transmitter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
- B66C15/06—Arrangements or use of warning devices
- B66C15/065—Arrangements or use of warning devices electrical
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention relates to a hoisting machinery amplitude monitoring system and a method, the system comprises a sound wave transmitter and two sound wave receivers, the sound wave transmitter is arranged at the tail end of the free end of a hoisting machinery arm frame, the sound wave receivers are arranged on the plane where the fixed end of the hoisting machinery arm frame is located, the two sound wave receivers are spaced at a certain distance, the connection line of the two sound wave receivers is vertically intersected with the rotation central axis of the hoisting machinery, the system also comprises a storage device used for storing the distance between the two sound wave receivers and the vertical distance between the sound wave receivers and the rotation central axis, and a controller used for controlling the sound wave transmitter and the sound wave receivers, obtaining the distance between the two sound wave receivers and the sound wave transmitter, obtaining the distance information in the storage device and calculating the amplitude of the hoisting machinery, wherein the controller is respectively connected with the sound wave transmitter, the sound wave receivers and the storage device. Compared with the prior art, the invention has the advantages of high amplitude measurement precision, high equipment safety and the like.
Description
Technical Field
The invention relates to the field of safety monitoring of hoisting machinery, in particular to a system and a method for monitoring the amplitude of the hoisting machinery.
Background
The range of a crawler crane or other arm-mounted hoisting machine refers to the horizontal distance from the rotation center line of the rotating platform to the vertical center line of the load-taking device (when the crawler crane is unloaded) when the hoisting machine is placed horizontally.
The amplitude of the arm frame type hoisting machinery such as a crawler crane changes along with the change of arm frame combination, arm frame length and angle, the hoisting weight allowed under different amplitudes is different, and a tipping accident occurs if overload occurs. In the prior art, an angle sensor is mostly adopted to measure the angle of the arm support, and the amplitude is calculated according to the preset arm length. In practice, due to the self weight of the arm support and the influence of an external force, the arm support deforms, and particularly when the arm support is long, the self deformation causes large errors of the calculated amplitude and the actual amplitude of the method, and the safe use of equipment is influenced.
Disclosure of Invention
The present invention is directed to a system and a method for monitoring the amplitude of a hoisting machine, which overcome the above-mentioned drawbacks of the prior art.
The purpose of the invention can be realized by the following technical scheme:
the system also comprises a storage device used for storing the distance between the two sound wave receivers and the vertical distance between the two sound wave receivers and the rotation central axis, and a controller used for controlling the sound wave transmitter and the sound wave receiver, obtaining the distance between the two sound wave receivers and the sound wave transmitter, obtaining the distance information in the storage device and calculating to obtain the amplitude of the hoisting machinery, wherein the controller is respectively connected with the sound wave transmitter, the sound wave receiver and the storage device.
Preferably, the sound wave transmitter is an ultrasonic wave transmitter, and correspondingly, the sound wave receiver includes an ultrasonic wave receiver.
Preferably, the sound wave transmitter and the sound wave receiver are connected with the controller through a communication module.
Preferably, the communication module comprises a wireless communication module.
Preferably, the controller comprises a microprocessor having digital logic processing functionality.
Preferably, the microprocessor includes any one of a single chip microcomputer and a DSP.
Preferably, the system also comprises an alarm for alarming when the amplitude exceeds the limit, and the alarm is connected with the controller.
Preferably, the alarm comprises an audible and visual alarm, and the audible and visual alarm is arranged in a cab of the hoisting machinery.
Preferably, the alarm further comprises a remote alarm terminal.
A hoisting machinery amplitude monitoring method is based on the hoisting machinery amplitude monitoring system and comprises the following steps:
the controller controls the operation of the sound wave transmitter and the sound wave receiver;
the sound wave transmitter sends sound wave signals to the sound wave receiver according to the control signals, the sound wave receiver receives the sound wave signals in real time,the controller calculates the distance between the two sound wave receivers and the sound wave transmitter according to the sound wave receiving and transmitting time interval, the sound wave receiver which is closer to the rotation central axis is taken as a first sound wave receiver, the sound wave receiver which is farther from the rotation central axis is taken as a second sound wave receiver, and the distance between the first sound wave receiver and the sound wave transmitter is L1Distance between the second acoustic receiver and the acoustic transmitter is L2；
Obtaining distance information in a memory, wherein the distance information comprises a perpendicular distance D between the first sound wave receiver and the revolution central axis and a distance D between the first sound wave receiver and the second sound wave receiver1；
Calculating the hoisting mechanical amplitude F:
compared with the prior art, the invention has the following advantages:
(1) according to the invention, the free end and the fixed end of the arm support are respectively provided with the sound wave emitter and the sound wave receiver, so that the real-time detection of the actual amplitude is conveniently realized through distance detection, and the detection precision is high;
(2) the alarm is arranged, so that the alarm can be given in time when the amplitude exceeds the limit, and the safety of equipment is ensured.
Drawings
FIG. 1 is a schematic structural diagram of an amplitude monitoring system for a hoisting machine according to the present invention;
in the figure, 1 denotes a main arm, 2 denotes an auxiliary arm, and 3 denotes a turning member.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. Note that the following description of the embodiments is merely a substantial example, and the present invention is not intended to be limited to the application or the use thereof, and is not limited to the following embodiments.
Examples
As shown in fig. 1, in this embodiment, a hoisting mechanical amplitude monitoring system is provided, where a hoisting mechanical arm support includes a main arm 1 and an auxiliary arm 2 that are connected in sequence, the main arm 1 is fixed on a rotating component 3, and an end of the auxiliary arm 2 is a free end of the hoisting mechanical arm support. The hoisting machinery amplitude monitoring system comprises a sound wave transmitter and two sound wave receivers, wherein the sound wave transmitter is arranged at the tail end of the free end of a hoisting machinery arm frame, the position of a P point in the drawing is that the sound wave receiver is arranged on the plane where the fixed end of the hoisting machinery arm frame is located, the two sound wave receivers are spaced at a certain distance, the connecting line of the two sound wave receivers is perpendicularly intersected with the rotation central axis of the hoisting machinery, the two sound wave receivers are respectively a first sound wave receiver and a second sound wave receiver, the position of two points is A, B in the drawing, because the fixed end of the hoisting machinery arm frame is arranged on the upper surface of a rotary component 3, in the drawing, the point O is the central point of the fixed end of the hoisting machinery arm frame, therefore, the two sound wave receivers are arranged on the upper surface of the rotary component 3, in the drawing, Q is the rotation central axis of the hoisting machinery, and the connecting line of the two points A, B is perpendicularly intersected with the rotation central axis Q of the hoisting machinery. The sound wave transmitter is an ultrasonic transmitter, correspondingly, the sound wave receiver comprises an ultrasonic receiver, the sound wave transmitter and the sound wave receiver are connected with the controller through the communication module, and the communication module comprises a wireless communication module.
The system also comprises a memory for storing the distance between the sound wave receiver and the vertical distance between the sound wave receiver and the rotation central axis, and a controller for controlling the sound wave transmitter and the sound wave receiver, obtaining the distance between the two sound wave receivers and the sound wave transmitter, obtaining the distance information in the memory and calculating to obtain the amplitude of the hoisting machinery, wherein the controller is respectively connected with the sound wave transmitter, the sound wave receiver and the memory.
The controller comprises a microprocessor with a digital logic processing function, the microprocessor comprises any one of a single chip microcomputer and a DSP, and the single chip microcomputer is adopted in the embodiment.
The system further comprises an alarm for alarming when the amplitude exceeds the limit, the alarm is connected with the controller and comprises an audible and visual alarm, the audible and visual alarm is arranged in the hoisting machinery cab, and the alarm further comprises a remote alarm terminal. When the amplitude exceeds the limit, the audible and visual alarm and the remote alarm terminal can give an alarm in time, so that the safety of equipment is ensured.
A hoisting machinery amplitude monitoring method is based on the hoisting machinery amplitude monitoring system and comprises the following steps:
the controller controls the operation of the sound wave transmitter and the sound wave receiver;
the sound wave transmitter sends sound wave signals to the sound wave receiver according to the control signals, the sound wave frequency is 100kHz, the transmitting frequency is 1Hz, the sound wave transmitter receives the control signals, sound waves with the frequency of 100kHz are transmitted to the sound wave receiver at the frequency of 1Hz, the sound wave receiver receives the sound wave signals in real time, the controller calculates the distance between the two sound wave receivers and the sound wave transmitter according to the sound wave transmitting and receiving time interval, the sound wave receiver which is closer to the rotation central axis is marked as a first sound wave receiver, the sound wave receiver which is farther from the rotation central axis is marked as a second sound wave receiver, and the distance between the first sound wave receiver and the sound wave transmitter is L1Distance between the second acoustic receiver and the acoustic transmitter is L2；
Obtaining distance information in a memory, wherein the distance information comprises a perpendicular distance D between the first sound wave receiver and the revolution central axis and a distance D between the first sound wave receiver and the second sound wave receiver1；
In square Δ PAC:
in right angle Δ PBC:
obtaining by solution:
therefore, the hoisting mechanical amplitude F is calculated:
such as L1＝100m，L2＝98m，D＝5m，D12m, then: d2＝98m；
The hoisting mechanical amplitude F is 105 m;
when the amplitude exceeds the limit, the controller controls the audible and visual alarm to perform audible and visual alarm, and the remote alarm terminal performs remote alarm.
The above embodiments are merely examples and do not limit the scope of the present invention. These embodiments may be implemented in other various manners, and various omissions, substitutions, and changes may be made without departing from the technical spirit of the present invention.
Claims (10)
1. The system is characterized by comprising a sound wave transmitter and two sound wave receivers, wherein the sound wave transmitter is arranged at the tail end of the free end of a boom of the hoisting machinery, the sound wave receivers are arranged on the plane where the fixed end of the boom of the hoisting machinery is located, the two sound wave receivers are spaced at a certain distance, the connection line of the two sound wave receivers is perpendicular to the rotation central axis of the hoisting machinery, the system further comprises a storage device used for storing the distance between the two sound wave receivers and the perpendicular distance between the two sound wave receivers and the rotation central axis, and a controller used for controlling the sound wave transmitter and the sound wave receivers, obtaining the distance between the two sound wave receivers and the sound wave transmitter, obtaining distance information in the storage device and calculating the amplitude of the hoisting machinery, and the controller is respectively connected with the sound wave transmitter, the sound wave receivers and the storage device.
2. The hoisting machine amplitude monitoring system of claim 1, wherein the sonic transmitter is an ultrasonic transmitter and correspondingly the sonic receiver comprises an ultrasonic receiver.
3. The hoisting machine amplitude monitoring system of claim 1, wherein the sonic transmitter and sonic receiver are coupled to the controller via a communication module.
4. The hoisting machine amplitude monitoring system of claim 3, wherein the communication module comprises a wireless communication module.
5. The amplitude monitoring system of claim 1, wherein the controller comprises a microprocessor having digital logic processing capability.
6. The hoisting machine amplitude monitoring system of claim 5, wherein the microprocessor comprises any one of a single chip microcomputer and a DSP.
7. The hoisting machine amplitude monitoring system of claim 1, further comprising an alarm for amplitude overrun warning, the alarm being connected to the controller.
8. The hoisting machine amplitude monitoring system of claim 7, wherein the alarm comprises an audible and visual alarm, and the audible and visual alarm is disposed in a hoisting machine cab.
9. The hoisting machine amplitude monitoring system of claim 8, wherein the alarm further comprises a remote alarm terminal.
10. A hoisting machine amplitude monitoring method, characterized in that the method is based on a hoisting machine amplitude monitoring system according to any one of claims 1 to 9, the method comprising:
the controller controls the operation of the sound wave transmitter and the sound wave receiver;
the sound wave transmitter sends sound wave signals to the sound wave receiver according to the control signals, the sound wave receiver receives the sound wave signals in real time, the controller calculates the distance between the two sound wave receivers and the sound wave transmitter according to the sound wave receiving and sending time interval, and the sound wave receiver which is closer to the rotation central axis is recorded asA first sound wave receiver for recording the sound wave receiver far from the rotation central axis as a second sound wave receiver, the distance between the first sound wave receiver and the sound wave transmitter being L1Distance between the second acoustic receiver and the acoustic transmitter is L2；
Obtaining distance information in a memory, wherein the distance information comprises a perpendicular distance D between the first sound wave receiver and the revolution central axis and a distance D between the first sound wave receiver and the second sound wave receiver1；
Calculating the hoisting mechanical amplitude F:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110867362.0A CN113479776A (en) | 2021-07-30 | 2021-07-30 | Hoisting machinery amplitude monitoring system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110867362.0A CN113479776A (en) | 2021-07-30 | 2021-07-30 | Hoisting machinery amplitude monitoring system and method |
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| Publication Number | Publication Date |
|---|---|
| CN113479776A true CN113479776A (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110867362.0A Pending CN113479776A (en) | 2021-07-30 | 2021-07-30 | Hoisting machinery amplitude monitoring system and method |
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| CN (1) | CN113479776A (en) |
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2021
- 2021-07-30 CN CN202110867362.0A patent/CN113479776A/en active Pending
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