CN215974703U - Lifting height monitoring system - Google Patents
Lifting height monitoring system Download PDFInfo
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- CN215974703U CN215974703U CN202121756428.0U CN202121756428U CN215974703U CN 215974703 U CN215974703 U CN 215974703U CN 202121756428 U CN202121756428 U CN 202121756428U CN 215974703 U CN215974703 U CN 215974703U
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Abstract
The utility model relates to a lifting height monitoring system which comprises an acoustic wave transmitter, a first acoustic wave receiver and a second acoustic wave receiver, wherein the acoustic wave transmitter is arranged at the top of a lifting appliance of a lifting machine, the first acoustic wave receiver and the second acoustic wave receiver are arranged on the surface of a rotary platform of the lifting machine, the two acoustic wave receivers are spaced at a certain distance, the connection line of the two acoustic wave receivers is perpendicular to the rotary central axis of the lifting machine, the system also comprises a memory for storing distance information, and a controller for controlling the acoustic wave transmitter, the first acoustic wave receiver and the second acoustic wave receiver, obtaining the distance between the two acoustic wave receivers and the acoustic wave transmitter, obtaining the distance information in the memory and calculating the lifting height, wherein the controller is respectively connected with the acoustic wave transmitter, the first acoustic wave receiver, the second acoustic wave receiver and the memory. Compared with the prior art, the method has the advantages of high measurement accuracy and strong equipment safety.
Description
Technical Field
The utility model relates to the technical field of safety monitoring of hoisting machinery, in particular to a hoisting height monitoring system.
Background
The height of a lifting appliance of an arm frame type lifting machine such as a crawler crane is changed along with arm frame combination, the length and the angle of an arm frame and the retraction and release of a lifting steel wire rope. In the prior art, an angle sensor is mostly adopted to measure the angles of a lifting drum and an arm support and indirectly calculate the height of a lifting appliance. In practice, due to the factors such as arm support deformation, the error between the height of the lifting appliance calculated by the method and the actual height is large, and the safe use of equipment is influenced.
SUMMERY OF THE UTILITY MODEL
The present invention aims to overcome the above-mentioned drawbacks of the prior art and to provide a system for monitoring the lifting height.
The purpose of the utility model can be realized by the following technical scheme:
a lifting height monitoring system comprises a sound wave transmitter, a first sound wave receiver and a second sound wave receiver, wherein the sound wave transmitter is arranged at the top of a lifting appliance of a lifting machine, the first sound wave receiver and the second sound wave receiver are arranged on the surface of a rotary platform of the lifting machine, the first sound wave receiver and the second sound wave receiver are separated by a certain distance, the connection line of the first sound wave receiver and the second sound wave receiver is perpendicular to the rotary central axis of the lifting machine, the system also comprises a memory for storing the distance between the first sound wave receiver and the second sound wave receiver, the distance between the surface of the rotary platform and the ground and the distance between the top of the lifting appliance and the tail end of a hook, the system also comprises a controller for controlling the sound wave transmitter, the first sound wave receiver and the second 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 the lifting height, the controller is respectively connected with the sound wave transmitter, the first sound wave receiver, the second sound wave receiver and the memory.
Preferably, the system further comprises an alarm for alarming that the lifting height exceeds the limit, and the alarm is connected with the controller.
Preferably, the alarm comprises a local alarm and a remote alarm, and the local alarm is arranged in a cab of the hoisting machinery.
Preferably, the local alarm comprises an audible and visual alarm.
Preferably, the remote alarm comprises a remote alarm terminal.
Preferably, the sound wave transmitter is an ultrasonic wave transmitter, and correspondingly, the first sound wave receiver and the second sound wave receiver are both ultrasonic wave receivers.
Preferably, the sound wave transmitter, the first sound wave receiver and the second sound wave receiver are respectively connected to the controller through a communication module.
Preferably, the communication module comprises a wireless communication module.
Preferably, the controller is a microprocessor with digital logic processing function.
Preferably, the controller comprises any one of a single chip microcomputer and a DSP.
Compared with the prior art, the utility model has the following advantages:
(1) according to the utility model, the acoustic wave transmitting device and the acoustic wave receiving device are respectively arranged on the lifting appliance and the rotary component, so that the lifting height can be conveniently monitored in real time, the measurement is convenient, and the accuracy is high;
(2) the utility model is provided with the alarm, so that the alarm can be given in time when the lifting height exceeds the limit, and the safety of equipment is ensured.
Drawings
Fig. 1 is a schematic structural view of a hoist height monitoring system according to the present invention;
in the figure, 1 is a main arm, 2 is an auxiliary arm, 3 is a steel wire rope, 4 is a lifting appliance, 5 is a rotary platform, 6 is a rotary support, and 7 is a crawler.
Detailed Description
The utility model 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, the embodiment provides a hoisting height monitoring system by taking a crawler crane as an example, the crawler crane includes a rotary platform 5, the rotary platform 5 is installed on a crawler 7 through a rotary support 6, a crane boom includes a main arm 1 and an auxiliary arm 2, a steel wire rope 3 is arranged at the tail end of the auxiliary arm 2, a lifting appliance 4 is arranged at the tail end of the steel wire rope 3, and a hook is arranged below the lifting appliance 4.
The system for monitoring the lifting height provided by the embodiment comprises an acoustic wave transmitter, a first acoustic wave receiver and a second acoustic wave receiver, wherein the acoustic wave transmitter is arranged at the top of a lifting appliance 4 of a lifting machine, the first acoustic wave receiver and the second acoustic wave receiver are arranged on the surface of a rotary platform 5 of the lifting machine, the first acoustic wave receiver and the second acoustic wave receiver are separated by a certain distance, the connection line of the first acoustic wave receiver and the second acoustic wave receiver is perpendicular to the rotary central axis of the lifting machine, the system further comprises a memory for storing the distance between the first acoustic wave receiver and the second acoustic wave receiver, the distance between the surface of the rotary platform and the ground and the distance between the top of the lifting appliance and the tail end of a hook, the system further comprises a controller for controlling the acoustic wave transmitter, the first acoustic wave receiver and the second acoustic wave receiver, obtaining the distance between the two acoustic wave receivers and the acoustic wave transmitter, obtaining the distance information in the memory and calculating the lifting height, the controller is respectively connected with the sound wave transmitter, the first sound wave receiver, the second sound wave receiver and the memory, the controller is a microprocessor with a digital logic processing function and comprises any one of a single chip microcomputer and a DSP, and the single chip microcomputer is adopted in the embodiment.
The system also comprises an alarm for alarming when the lifting height exceeds the limit, and the alarm is connected with the controller. The alarm comprises a local alarm and a remote alarm, the local alarm is arranged in a cab of the hoisting machinery, the local alarm comprises an audible and visual alarm, and the remote alarm comprises a remote alarm terminal, such as a PC (personal computer), a handheld terminal device and the like. When the lifting height exceeds the limit, the alarm can be given in time, and the equipment safety is ensured.
The sound wave transmitter is an ultrasonic wave transmitter, and correspondingly, the first sound wave receiver and the second sound wave receiver are both ultrasonic wave receivers. The sound wave transmitter, the first sound wave receiver and the second sound wave receiver are respectively connected to the controller through the communication module, and the communication module comprises a wireless communication module.
The specific steps of measuring the lifting height by adopting the lifting height monitoring system are as follows:
the controller controls the operation of the sound wave transmitter, the first sound wave receiver and the second sound wave receiver;
the sound wave transmitter sends sound wave signals to the first sound wave receiver and the second 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 and transmits sound waves with the frequency of 100kHz to the first sound wave receiver and the second sound wave receiver at the frequency of 1Hz, the first sound wave receiver and the second sound wave receiver receive the sound wave signals in real time, and the controller calculates the distance L between the first sound wave receiver and the sound wave transmitter according to the sound wave receiving and transmitting time interval1The distance between the second acoustic receiver and the acoustic transmitter is L2；
ObtainingFirst and second acoustic receiver separation D1Distance H between surface of rotary platform and ground1And the distance H between the top of the lifting appliance and the tail end of the hook2；
In square Δ PAC:
in right angle Δ PBC:
this gives:
Hcis the vertical distance between the top of the spreader and the surface of the rotating platform, D2B, C is the distance between two points in the graph;
calculating the lifting height H:
H＝Hc+H1-H2
such as L1＝15m，L2＝14.5m，D1＝1m，H1＝1m，H20.5m, then Hc＝13.33m，
H is calculated to 13.83 m;
and when the calculated lifting height exceeds the limit, alarming through an alarm.
It should be noted that the utility model protects the hardware composition structure of the lifting height monitoring system, and the lifting height calculation method is not in the scope of the utility model.
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. A lifting height monitoring system is characterized by comprising an acoustic wave transmitter, a first acoustic wave receiver and a second acoustic wave receiver, wherein the acoustic wave transmitter is arranged at the top of a lifting appliance of a lifting machine, the first acoustic wave receiver and the second acoustic wave receiver are arranged on the surface of a rotary platform of the lifting machine, the first acoustic wave receiver and the second acoustic wave receiver are spaced at a certain distance, the connection line of the first acoustic wave receiver and the second acoustic wave receiver is perpendicular to the rotary central axis of the lifting machine, the system further comprises a memory for storing the distance between the first acoustic wave receiver and the second acoustic wave receiver, the distance between the surface of the rotary platform and the ground and the distance between the top of the lifting appliance and the tail end of a hook, the system further comprises a controller for controlling the acoustic wave transmitter, the first acoustic wave receiver and the second acoustic wave receiver, obtaining the distance between the two acoustic wave receivers and the acoustic wave transmitter, obtaining the distance information in the memory and calculating the lifting height, the controller is respectively connected with the sound wave transmitter, the first sound wave receiver, the second sound wave receiver and the memory.
2. A hoist height monitoring system according to claim 1, further including an alarm for a hoist height overrun alarm, the alarm being connected to the controller.
3. A hoist height monitoring system according to claim 2, wherein the alarm includes a local alarm and a remote alarm, the local alarm being located in the cab of the hoisting machine.
4. A hoist height monitoring system according to claim 3, wherein the local alarm comprises an audible and visual alarm.
5. A hoist height monitoring system according to claim 3, wherein the remote alarm includes a remote alarm terminal.
6. A hoist height monitoring system according to claim 1, wherein the sonic emitter is an ultrasonic emitter and correspondingly the first and second sonic receivers are ultrasonic receivers.
7. A hoist height monitoring system according to claim 1, wherein the acoustic transmitter, the first acoustic receiver and the second acoustic receiver are each connected to the controller via a communications module.
8. A hoist height monitoring system according to claim 7, wherein the communication module includes a wireless communication module.
9. A hoist height monitoring system according to claim 1, wherein the controller is a microprocessor having digital logic processing capability.
10. A hoist height monitoring system according to claim 9, wherein the controller includes any one of a single chip microcomputer and a DSP.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121756428.0U CN215974703U (en) | 2021-07-30 | 2021-07-30 | Lifting height monitoring system |
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| CN202121756428.0U CN215974703U (en) | 2021-07-30 | 2021-07-30 | Lifting height monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113526382A (en) * | 2021-07-30 | 2021-10-22 | 上海市特种设备监督检验技术研究院 | Lifting height monitoring system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113526382A (en) * | 2021-07-30 | 2021-10-22 | 上海市特种设备监督检验技术研究院 | Lifting height monitoring system and method |
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