CN117163836B - Monitoring method for keeping safety distance between hoisting machinery and electrified line - Google Patents
Monitoring method for keeping safety distance between hoisting machinery and electrified line Download PDFInfo
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- CN117163836B CN117163836B CN202311127008.XA CN202311127008A CN117163836B CN 117163836 B CN117163836 B CN 117163836B CN 202311127008 A CN202311127008 A CN 202311127008A CN 117163836 B CN117163836 B CN 117163836B
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 239000000725 suspension Substances 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000004891 communication Methods 0.000 claims abstract description 4
- 230000006698 induction Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims 3
- 238000010276 construction Methods 0.000 description 4
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Abstract
The invention relates to a monitoring method for keeping the safety distance between a hoisting machine and an electrified line, which is realized by a ranging host and a ranging slave which are respectively arranged at the lower part and the highest point of a suspension arm of the hoisting machine, wherein the ranging host and the ranging slave are used for measuring the vector distance between the hoisting machine and the electrified line, and the ranging host is in communication connection with a control mechanism which is electrically connected with a hydraulic control system of the hoisting machine and used for judging and calculating the distance between the electrified line and the suspension arm and setting an early warning threshold; the monitoring method comprises the following steps: low-level sensing ranging and low-level alarming; ranging by a high-order algorithm and alarming by high-order; early warning judgment; and (5) alarming. According to the monitoring method for keeping the safe distance between the hoisting machinery and the electrified line, disclosed by the invention, the safe distance between the hoisting machinery and the electrified line is accurately kept; and the functions of early warning, alarming and forced stopping are carried out.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a monitoring method for keeping a safe distance between a hoisting machine and an electrified line.
Background
The hoisting machinery is a mechanical equipment for lifting and carrying heavy objects, and is widely applied to hoisting work in sites such as construction sites, ports and dock sites. The crane is usually composed of a frame, a boom, a hoisting mechanism, a control system.
Flexible hoisting cranes are generally adopted in electric power construction, but in the actual construction process, due to parallax existing below an observer and an operator, the distance between a hoisting object and a live wire is wrongly judged.
At present, the conventional mode is to set up electroscope on the davit top of hoisting machinery to according to the phoenix ware of electroscope, alarm light carry out the judgement of distance, however conventional electroscope judgement mode still exists following not enough:
1. when the upper top end of the suspension arm is higher than the electrified circuit or the suspension arm rotates, the electroscope cannot judge correctly;
2. the conventional electroscope has only the function of sound and light alarm, and cannot be completely heard and seen in a noisy and high-brightness outdoor construction site; and has no control function.
Disclosure of Invention
In order to solve the technical problems in the background technology, the invention provides a monitoring method for keeping the safety distance between a hoisting machine and a live line, and the safety distance between a boom and the live line is accurate; and the functions of early warning, alarming and forced stopping are carried out.
The invention adopts the technical scheme that:
the utility model provides a keep lifting machinery and live line safe distance's monitoring method, is realized by setting up range finding host computer, the range finding slave machine on lifting machinery's the davit, range finding host computer, range finding slave machine set up respectively in the lower part of davit, the highest point for measure the vector distance between the two, and the live line respectively with the vector distance between the two, range finding host computer communication connection is provided with control mechanism, control mechanism is connected with lifting machinery's hydraulic control system electricity, is used for judging, calculates live line and davit's distance, and sets for the early warning threshold value.
The monitoring method comprises the following steps:
A. starting:
before the boom of the hoisting machinery extends, starting a ranging host machine and a ranging slave machine for initialization;
b1, low-order induction ranging:
according to the vector distance from the electrified line to the ranging slave machineIt can be seen that:
distance between boom and live line
C1, low-order alarm:
when the distance between the suspension arm and the electrified circuit is smaller than the standard safety distance, the method comprises the following steps:
H＜H Secure when the alarm signal is sent out;
b2, ranging by a high-order algorithm:
according to the vector distance from the electrified line to the ranging slave machineVector distance from live line to ranging host>According to the vector distance from the ranging slave to the ranging master +.>The distance H between the suspension arm and the electrified circuit can be calculated;
c2, high-order warning:
when the distance between the suspension arm and the electrified circuit is smaller than the standard safety distance, the method comprises the following steps:
H＜H Secure when the alarm signal is sent out;
D. early warning judgment:
according to the voltage level of the electrified line, the early warning threshold H is set by the control mechanism Threshold value ；
When H is less than or equal to H Threshold value When the crane is in a lifting state, the control mechanism sends a control signal to a hydraulic control system of the crane, and adjusts the rotating speed of an oil pump of the hydraulic control system, so that the moving speed of the lifting arm is reduced;
E. and (3) alarming:
when a low-order alarm and a high-order alarm occur, the method comprises the following steps:
H＜H Secure when the hydraulic control system is used, the control mechanism sends a control signal to the hydraulic control system of the hoisting machinery to control the distribution valve of the hydraulic control system to be closedClosing, thereby stopping the boom from moving.
Further, the ranging host includes:
the main machine box is arranged at the lower part of the hanging arm, a first inductance ranging module is arranged in the main machine box, and a transmitting end group is arranged at the front end of the main machine box.
Further, the ranging slave comprises:
the secondary box is arranged at the highest point of the suspension arm, a second inductance ranging module is arranged in the secondary box, a receiving end is arranged at the rear end of the secondary box, and the receiving end and the sending end group are oppositely arranged.
Further, in the step B2, in the ranging of the high-order algorithm:
the vector distance from the live line to the ranging slave is:the vector distance from the live line to the ranging host is:the vector distance from the ranging slave to the ranging host is: />Further, in the step B2, in the ranging of the high-order algorithm:
will beThe spatial rectangular coordinate system is arranged into horizontal rectangular coordinates, namely: />
Wherein: p point atUpper and coplanar with the live line, ">Further, in the step B2, in the ranging of the high-order algorithm, the distance between the boom and the live line is as follows:
wherein:
is +.>Area of triangle MNPFurther, in the area formula of the triangle MNP:
further, in a space rectangular coordinate system:
the vector distance from the live line to the ranging slave is:
the vector distance from the live line to the ranging host is:
the vector distance from the ranging slave to the ranging host is:
further, in horizontal rectangular coordinates:
wherein:
is->The projection on the horizontal rectangular coordinates is as follows:
further, the range finding slave is provided with two sets, including:
the first distance measuring slave machine is arranged at the highest point of the suspension arm, and the second distance measuring slave machine is arranged in the middle of the suspension arm;
the first distance measuring slave machine and the second distance measuring slave machine are used for measuring two sets of distance measuring data, so that the distance between the two sets of suspension arms and the electrified line is calculated, and data comparison is conducted.
The monitoring method for keeping the safety distance between the hoisting machinery and the electrified line has the advantages that:
1. the vector distance between the two is measured through the distance measuring host and the distance measuring slave, and the vector distance between the live line and the two is measured through the live line;
2. judging the safety distance between the suspension arm and the electrified line through an algorithm;
3. the safety is improved by means of alarming, early warning and forced stopping.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, and the drawings in the following description are embodiments of the present invention.
FIG. 1 is a general perspective view of an example of the invention;
FIG. 2 is a schematic perspective view of a ranging host according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of a ranging slave according to an example of the present invention;
FIG. 4 is a schematic diagram of boom-to-live line distance for an example of the present invention;
FIG. 5 is a schematic flow chart of an example of the invention;
fig. 6 is a vector distance schematic of an example of the invention.
In the figure:
100. the suspension arm is provided with a suspension arm,
1. the distance measuring host machine is used for measuring the distance of the object,
10. a host box 11, a first inductance ranging module 12 and a transmitting end group,
2. the distance-measuring slave machine is provided with a distance measuring device,
2-A, a first ranging slave, 2-B, a second ranging slave,
20. the secondary machine box, 21, the second inductance ranging module, 22 and the receiving end.
Detailed Description
In order to more clearly and clearly describe the specific implementation objects and embodiments of the present invention, the following description will fully describe the technical solutions of the present invention, and the described embodiments are some, but not all, embodiments of the present invention. All other embodiments based on the described embodiments of the invention fall within the scope of the invention without making inventive efforts.
The invention discloses a monitoring method for keeping a safe distance between a hoisting machine and an electrified line, which is realized by a ranging host machine 1 and a ranging slave machine 2 which are arranged on a boom 100 of the hoisting machine as shown in fig. 1.
The distance measuring host 1 is disposed at a lower portion of the boom 100, as shown in fig. 2, and includes:
the main box 10 is arranged at the lower part of the suspension arm 100, a first inductance ranging module 11 is arranged in the main box 10, and a transmitting end group 12 is arranged at the front end of the main box 10.
The ranging slave 2 is disposed at the highest point of the boom 100, as shown in fig. 3, and includes:
the secondary box 20 is arranged at the highest point of the suspension arm 100, the secondary box 20 is internally provided with a second inductance ranging module 21, the rear end of the secondary box 20 is provided with a receiving end 22, the receiving end 22 is arranged opposite to the transmitting end group 12 and is used for measuring vector distances between the ranging host 1 and the ranging slave 2, an electrified line is respectively connected with the ranging host 1 and the ranging slave 2 in a communication manner, the ranging host 1 is provided with a control mechanism, and the control mechanism is electrically connected with a hydraulic control system of the lifting machine and is used for judging and calculating the distance between the electrified line and the suspension arm 100 and setting an early warning threshold value.
According to the specific structures of the ranging master 1 and the ranging slave 2 in the above embodiments, the following describes the monitoring method, as shown in fig. 4 and 5:
A. starting:
before the boom 100 of the hoisting machinery extends, starting a ranging host machine 1 and a ranging slave machine 2 for initialization;
b1, low-order induction ranging:
according to the vector distance from the live line to the ranging slave 2It can be seen that:
distance between boom 100 and live line
C1, low-order alarm:
when the distance between the boom 100 and the live line is less than the standard safety distance, it is: h < H Secure When the alarm signal is sent out;
b2, ranging by a high-order algorithm:
the vector distance from the live line to the ranging slave 2 is:the vector distance from the live line to the ranging host 1 is: />The vector distance from the ranging slave 2 to the ranging master 1 is: />In a space rectangular coordinate system:
the vector distance from the live line to the ranging slave 2 is:
the vector distance from the live line to the ranging host 1 is:
the vector distance from the ranging slave 2 to the ranging master 1 is:
will beThe spatial rectangular coordinate system is arranged into horizontal rectangular coordinates, as shown in fig. 6, namely:
wherein: p point atUpper and coplanar with the live line, ">In horizontal rectangular coordinates:
wherein:is->The projection on the horizontal rectangular coordinates is as follows:
the distance between boom 100 and the live line is calculated as:
wherein:
is +.>Area of triangle MNP
In the area formula of the triangle MNP:
c2, high-order warning:
when the distance between the boom 100 and the live line is less than the standard safety distance, it is:
H＜H Secure when the alarm signal is sent out;
D. early warning judgment:
according to the voltage level of the electrified line, the early warning threshold H is set by the control mechanism Threshold value ；
When H is less than or equal to H Threshold value When the crane is in a lifting state, the control mechanism sends a control signal to a hydraulic control system of the crane, and adjusts the rotating speed of an oil pump of the hydraulic control system, so that the moving speed of the boom 100 is reduced;
E. and (3) alarming:
when a low-order alarm and a high-order alarm occur, the method comprises the following steps:
H＜H Secure when the boom 100 is moved, the control mechanism sends a control signal to the hydraulic control system of the hoisting machine, and controls the hydraulic control system distribution valve to be closed, thereby stopping the movement of the boom.
In order to improve the accuracy of the distance between the boom 100 and the live line, the ranging slave 2 is provided with two groups comprising:
the first ranging slave machine 2-A is arranged at the highest point of the suspension arm 100, and the second ranging slave machine 2-B is arranged in the middle of the suspension arm 100; the first ranging slave machine 2-a and the second ranging slave machine 2-B are used for measuring two sets of ranging data, so as to calculate the distances between the two sets of suspension arms 100 and the electrified line.
The boom 100 has a uniform travel, data distribution is in a normal distribution mode, and data comparison is performed by an arithmetic mean method.
Based on the above, the embodiment of the monitoring alarm device for keeping the safety distance between the hoisting machinery and the live line of the invention is taught, and by the above description, related workers can completely make various changes and modifications within the scope of not deviating from the technical idea of the invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (8)
1. A monitoring method for keeping a safe distance between a hoisting machine and an electrified line is characterized by comprising the following steps of:
the device is realized by a distance measuring host machine (1) and a distance measuring slave machine (2) which are arranged on a boom (100) of a hoisting machine;
the ranging host (1) comprises:
the main box (10) is arranged at the lower part of the suspension arm (100), a first inductance ranging module (11) is arranged in the main box (10), and a transmitting end group (12) is arranged at the front end of the main box (10);
the ranging slave (2) comprises:
the secondary machine box (20) is arranged at the highest point of the suspension arm (100), a second inductance ranging module (21) is arranged in the secondary machine box (20), a receiving end (22) is arranged at the rear end of the secondary machine box (20), and the receiving end (22) and the sending end group (12) are arranged oppositely;
the distance measurement host (1) and the distance measurement slave (2) are used for measuring the vector distance between the two, and the vector distance between the live line and the two respectively, the distance measurement host (1) is in communication connection with a control mechanism, the control mechanism is electrically connected with a hydraulic control system of the hoisting machinery and used for judging and calculating the distance between the live line and the suspension arm (100), and an early warning threshold value is set;
the monitoring method comprises the following steps:
A. starting:
before the boom (100) of the hoisting machinery extends, starting a ranging host machine (1) and a ranging slave machine (2) for initialization;
b1, low-order induction ranging:
according to the vector distance from the electrified line to the ranging slave (2)It can be seen that:
distance between boom (100) and live line
C1, low-order alarm:
when the distance between the suspension arm (100) and the electrified circuit is less than the standard safety distance, the method comprises the following steps:
H＜H Secure when the alarm signal is sent out;
b2, ranging by a high-order algorithm:
according to the vector distance from the electrified line to the ranging slave (2)According to the vector distance from the electrified line to the distance measuring host (1)According to the vector distance from the ranging slave (2) to the ranging master (1)>The distance H between the suspension arm (100) and the electrified line can be calculated;
c2, high-order warning:
when the distance between the suspension arm (100) and the electrified circuit is less than the standard safety distance, the method comprises the following steps:
H＜H Secure when the alarm signal is sent out;
D. early warning judgment:
according to the voltage level of the electrified line, the early warning threshold H is set by the control mechanism Threshold value ；
When H is less than or equal to H Threshold value When the crane is in a lifting state, the control mechanism sends a control signal to a hydraulic control system of the crane, and adjusts the rotating speed of an oil pump of the hydraulic control system, so that the moving speed of the suspension arm (100) is reduced;
E. and (3) alarming:
when a low-order alarm and a high-order alarm occur, the method comprises the following steps:
H＜H Secure when the crane is in a lifting state, the control mechanism sends a control signal to a hydraulic control system of the crane, and the hydraulic control system distribution valve is controlled to be closed, so that the suspension arm (100) stops moving.
2. A monitoring method for maintaining a safe distance between a hoisting machine and an electrified wire according to claim 1, wherein:
and B2, in the ranging of the high-order algorithm:
the vector distance from the live line to the ranging slave (2) is as follows:
the vector distance from the electrified line to the ranging host (1) is as follows:
the vector distance from the ranging slave (2) to the ranging host (1) is as follows:
3. a monitoring method for maintaining a safe distance between a hoisting machine and an electrified wire according to claim 2, wherein:
and B2, in the ranging of the high-order algorithm:
will beThe spatial rectangular coordinate system is arranged into horizontal rectangular coordinates, namely: />
Wherein: p point atUpper and coplanar with the live line, ">
4. A monitoring method for maintaining a safe distance between a hoisting machine and an electrified wire according to claim 3, wherein:
in the step B2 and high-order algorithm ranging, the distance between the suspension arm (100) and the electrified line is as follows:
wherein:
is +.>Area of triangle MNP->
5. The method of claim 4, wherein the monitoring means is configured to maintain a safe distance between the hoisting machine and the live line:
in the area formula of the triangle MNP:
6. a monitoring method for maintaining a safe distance between a hoisting machine and an electrified wire according to claim 3, wherein:
in a space rectangular coordinate system:
the vector distance from the live line to the ranging slave (2) is as follows:
the vector distance from the electrified line to the ranging host (1) is as follows:
the vector distance from the ranging slave (2) to the ranging host (1) is as follows:
7. the method of claim 6, wherein the monitoring means maintains a safe distance between the hoisting machine and the live line, wherein:
in horizontal rectangular coordinates:
wherein:
is->The projection on the horizontal rectangular coordinates is as follows:
8. the method of claim 7, wherein the monitoring means maintains a safe distance between the hoisting machine and the live line:
the range finding slave (2) is provided with two groups, including:
the first distance measuring slave machine (2-A) is arranged at the highest point of the suspension arm (100), and the second distance measuring slave machine (2-B) is arranged in the middle of the suspension arm (100);
the first ranging slave machine (2-A) and the second ranging slave machine (2-B) are used for measuring two sets of ranging data, so that the distances between the two sets of suspension arms (100) and the electrified line are calculated, and data comparison is performed.
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| 基于电场测量的起重机防触电报警系统;蔡骏峰;汤胜;严涛;;中国安全生产科学技术;20101015(第05期);第179-182页 * |
| 直流电场下安全距离预警系统设计计算;范军华;张蔓;邓曲然;辛轶男;王琳媛;何正浩;;水电能源科学;20171225(第12期);第167+189-191页 * |
| 防止吊车触碰高压输电线的报警装置研制;张霄蕾;高明;刘振海;秦松林;;华东电力(第07期);第1201-1202页 * |
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| CN117163836A (en) | 2023-12-05 |
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