CN114229706A - Alarm device for preventing mistaken collision of operation crane and high-voltage live equipment - Google Patents
Alarm device for preventing mistaken collision of operation crane and high-voltage live equipment Download PDFInfo
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- CN114229706A CN114229706A CN202111514720.6A CN202111514720A CN114229706A CN 114229706 A CN114229706 A CN 114229706A CN 202111514720 A CN202111514720 A CN 202111514720A CN 114229706 A CN114229706 A CN 114229706A
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- crane
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- 239000000725 suspension Substances 0.000 claims abstract description 33
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920001651 Cyanoacrylate Polymers 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 239000004830 Super Glue Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
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Classifications
-
- 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
-
- 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
- B66C13/18—Control systems or devices
- B66C13/46—Position indicators for suspended loads or for crane elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention provides an alarm device for preventing an operation crane and high-voltage live equipment from being mistakenly touched, which comprises a bottom plate, an extension plate, a trigger conductive box and an alarm box, wherein the extension plate is arranged on the bottom plate; the bottom plate is fixedly arranged on the outer top end of the operation chamber; one end of the extension plate is movably connected with the bottom plate and can be fixed on a corresponding one of a plurality of preset limit positions of the bottom plate through a limit structure, and the other end of the extension plate is fixed with a trigger conductive box and can perform telescopic motion towards the direction of the suspension arm; the triggering conductive box is driven to be right above the suspension arm by the extension plate, a height meeting a preset condition is reserved between the triggering conductive box and the suspension arm, and if the suspension arm rises to exceed the height, the triggering conductive box is triggered to realize alarming of the alarming box; if the lifting height of the suspension arm is lower than the height, the trigger conductive box is not triggered, and the alarm box does not give an alarm. The alarm device is simple in structure, convenient to operate, time-saving and labor-saving, and capable of alarming for the problem of insufficient distance between the operation crane and the high-voltage live equipment.
Description
Technical Field
The invention relates to the technical field of electric power safety, in particular to an alarm device for preventing an operation crane and high-voltage live equipment from being mistakenly touched.
Background
In the technical measures for ensuring safety of the electric power safety work regulations, a certain safety distance range is required between a conductive object (such as a worker) and a charged high-voltage device in operation. For example, 500kV is not less than 8.5 m, 220kV is not less than 6 m, 110kV is not less than 5 m, 35 kV to 66kV is not less than 4 m, 1kV to 10kV is not less than 3 m, 1kV is not less than 1.5 m, etc.
In the operation, although the safety technical measures are specified, the construction site is complicated and disordered, and the construction scheme is incomplete, so that the risk is difficult to manage and control. In addition, the problems of management system loopholes, not strict field execution or flow errors, not strict field monitoring, paralysis, slight safety consciousness and flowing form of construction schemes exist. And the construction unit conducts the operation against the rules and regulations and conducts the operation against the rules and regulations, lifting work commanders cannot meet the technical requirements and participate in the operation against the rules and regulations, so that the operation is not instructed by special persons, crane operators cannot correctly judge the position of lifting equipment, and the equipment cannot be safely and accurately placed at a preset safety position. In order to solve the problems, each power unit also adopts the measures of conducting training and learning, giving off one-to-three warnings, organizing safety regulations and examinations every year, inspecting on site and the like in a normalized organization.
However, in field work, a phenomenon that a working crane and high-voltage live equipment are mistakenly collided due to insufficient distance to cause a grid accident often occurs. Therefore, it is necessary to give an early warning of the problem of insufficient distance between the working crane and the high-voltage live equipment.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide an alarm device for preventing the operation crane from mistakenly colliding with the high-voltage live equipment, which is simple in structure, convenient to operate, time-saving and labor-saving, and capable of alarming for the problem of insufficient distance between the operation crane and the high-voltage live equipment.
In order to solve the technical problems, the embodiment of the invention provides an alarm device for preventing an operation crane and high-voltage live equipment from being mistakenly touched, which is arranged on the operation crane and comprises a bottom plate, an extension plate, a trigger conductive box and an alarm box; wherein the content of the first and second substances,
the bottom plate is fixedly arranged on the outer top end of an existing operating room of the operation crane;
the extension plate is composed of at least two cascade plates; one outer cascade plate of the extension plate is fixedly arranged on the bottom plate, a fixing position for fixing the trigger conductive box is formed on the other outer cascade plate, and two adjacent cascade plates in the middle are fixed after the angle and the height between the two cascade plates are adjusted through an adjusting valve;
the trigger conductive box comprises a box body, a movable plate, a pressure plate, an elastic element, an upper conductive strip and a lower conductive strip; the box body is an insulating part, is fixed on the outer side cascade plate of the extension plate and has a downward opening, and the inner bottom wall of the box body is fixed with the upper conductive bar; the movable plate is an insulating part, is embedded in the box body and is abutted against the opening of the box body, the lower conducting bar is fixed on the side surface of one side of the movable plate facing the inner bottom wall of the box body, and a first fixing area for fixing one end of the elastic element is formed on the side surface of one side far away from the inner bottom wall of the box body; the pressing plate is positioned outside the box body and arranged towards the existing suspension arm direction of the operation crane, and a second fixing area for fixing the other end of the elastic element is formed on the side surface of one side of the pressing plate facing the movable plate; the elastic element is fixed between the movable plate and the pressing plate; the upper conducting bar and the lower conducting bar are externally connected with an electric lead, and a certain movable distance is reserved between the upper conducting bar and the lower conducting bar;
the alarm box comprises a power supply and an alarm circuit; one end of the power supply is connected with the alarm circuit in series and is connected with the upper conductive bar through an electric lead externally connected with the upper conductive bar, and the other end of the power supply is connected with the lower conductive bar through an electric lead externally connected with the lower conductive bar;
when the trigger conductive box extends to the position right above an existing suspension arm of the operation crane through the extension plate and is spaced from the suspension arm by a preset height, if the suspension arm is lifted to exceed the preset height and presses the pressing plate, the movable plate is lifted to move towards the inner bottom wall of the trigger conductive box, so that the upper conductive strips are contacted with the lower conductive strips, and an alarm circuit in the alarm box is connected with a power supply to alarm; if the lifting arm is lifted to be lower than the preset height and does not extrude the pressing plate, the movable plate is pulled downwards under the action of the gravity of the pressing plate to move away from the inner bottom wall of the trigger conductive box, so that the upper conductive strips are not in contact with the lower conductive strips, and the alarm circuit in the alarm box does not give an alarm because the alarm circuit is not connected with a power supply.
Wherein, the bottom plate is fixed with the existing operation room of the operation crane through screws.
Wherein, at least one elastic element is provided and is a spring.
Wherein the alarm box is arranged close to an existing operating room of the operation crane.
Wherein, the power supply is a lithium battery.
Wherein, the warning circuit includes hold relay, LED lamp and alarm.
Wherein the predetermined height is decided based on the type of the high voltage charging apparatus.
The embodiment of the invention has the following beneficial effects:
1. according to the invention, after the base plate is fixed at the outer top end of the existing operation chamber of the operation crane, the trigger conductive box is extended to be right above the existing suspension arm of the operation crane through the extension plate, and the suspension arm has a preset height from the suspension arm, if the suspension arm is lifted to exceed the preset height and presses the pressing plate on the trigger conductive box, the upper conductive bar and the lower conductive bar in the trigger conductive box are contacted, so that an alarm circuit in the alarm box is connected with a power supply to alarm, and the error collision of the suspension arm and high-voltage live equipment due to insufficient distance is avoided;
2. the invention can also predefine the different heights of the distance between the trigger conductive box and the existing suspension arm of the operation crane according to the actual requirement and the type of the high-voltage live equipment, so that the extension height and the angle of the extension plate can be adjusted, thereby meeting the requirement of the safe distance range with different live high-voltage equipment;
3. the invention adopts a modular structure design, so that the whole device has a simple structure and is time-saving and labor-saving to operate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.
Fig. 1 is a schematic cross-sectional structural view of an alarm device for preventing an operating crane and high-voltage live equipment from being mistakenly touched according to an embodiment of the invention;
FIG. 2 is a schematic view of the assembled extension panel of FIG. 1;
FIG. 3 is another schematic view of the assembled extension board of FIG. 1;
FIG. 4 is a schematic diagram of the structure of the conductive box of FIG. 1 before pressing;
FIG. 5 is a schematic diagram of the trigger conductive box of FIG. 1 after being pressed;
FIG. 6 is a schematic diagram of the system of the alarm box of FIG. 1;
FIG. 7 is a schematic diagram of the electrical connections between the power supply and the alarm circuitry within the alarm box of FIG. 6;
fig. 8 is an application scene diagram of the alarm device for preventing the operation crane and the high-voltage live equipment from being mistakenly collided according to the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 6, in an embodiment of the present invention, an alarm device for preventing a working crane and a high voltage live line device from being accidentally touched is provided, which is mounted on a working crane (not shown), and includes a base plate 1, an extension plate 2, a trigger conductive box 3, and an alarm box 4; wherein the content of the first and second substances,
the base plate 1 is fixedly arranged on the outer top end of an existing operation chamber (not shown) of the operation crane through screws or strong glue;
the extension plate 2 is composed of at least two cascade plates; wherein, an outer cascade plate 21 of the extension plate 2 is fixedly arranged on the bottom plate, a fixing position for fixing the trigger conductive box is formed on the other outer cascade plate 24, and two arbitrary adjacent cascade plates (21 and 22, 22 and 23, 23 and 24) at the middle part are fixed after the angle and height between the two cascade plates are adjusted by the adjusting valve 5;
the trigger conductive box 3 includes a box body 31, a movable plate 32, a pressing plate 33, an elastic element 34, an upper conductive strip 35 and a lower conductive strip 36; the box 31 is an insulating member, which is fixed on the outer cascade plate (e.g. the outer cascade plate 24) of the extension plate 2 and has a downward opening, and an upper conductive strip 35 is fixed on the inner bottom wall thereof; the movable plate 32 is an insulating member, which is embedded in the box 31 and abuts against the opening of the box 31, and has a side surface facing the inner bottom wall of the box 31 and fixed with a lower conductive strip 36, and a side surface away from the inner bottom wall of the box 31 and formed with a first fixing area (not shown) for fixing one end of the elastic element 34; the pressing plate 33 is located outside the box 31 and is disposed toward the existing boom of the working crane (i.e., close to the boom), and a second fixing area (not shown) for fixing the other end of the elastic element 34 is formed on the side surface of the pressing plate facing the movable plate 32; the elastic elements 34 are fixed between the movable plate 32 and the pressing plate 33, and at least one and all of the elastic elements 34 are springs; the upper conductive strip 35 and the lower conductive strip 36 are externally connected with an electric lead 7, and a certain movable distance (such as the height of the box body 31 is 10cm) is reserved between the upper conductive strip and the lower conductive strip;
the alarm box 4 comprises a power supply 41 and an alarm circuit 42, and the alarm box 4 is arranged close to an existing operating room of the operation crane; wherein, the power source 41 is a lithium battery or other batteries, one end of which is connected in series with the alarm circuit 42 and is connected with the upper conductive bar 35 through the electrical lead 7 externally connected with the upper conductive bar 35, and the other end is connected with the lower conductive bar 36 through the electrical lead 7 externally connected with the lower conductive bar 36;
when the trigger conductive box 3 extends to the position right above the existing suspension arm of the operation crane through the extension plate 2 and is spaced from the suspension arm by a preset height, if the suspension arm is lifted to exceed the preset height and the pressure plate 33 is squeezed, the lifting movable plate 32 moves towards the inner bottom wall of the trigger conductive box 3, so that the upper conductive strip 35 is contacted with the lower conductive strip 36, and the alarm circuit 42 in the alarm box 4 is connected to the power supply 41 to alarm; if the boom is lifted to a height lower than the predetermined height without pressing the pressing plate 33, the pressing plate 33 pulls the movable plate 32 to move away from the inner bottom wall of the trigger conductive box 3 under the action of its own weight, so that the upper conductive strip 35 and the lower conductive strip 36 are not in contact, and the alarm circuit 42 in the alarm box 4 does not alarm because the power supply 41 is not connected.
It should be noted that the extension panel 2 extends directly above the existing boom of the work crane, as close as possible to the work crane cab, to reduce equipment and installation costs. At this time, the predetermined height is decided based on the type of the high-voltage charging apparatus. For example, based on the requirement that 500kV is not less than 8.5 meters, the predetermined height between the trigger conductive box 3 and the boom arm is converted to be 1.8 meters; for another example, based on the requirement that 220kV is not less than 6 meters, the predetermined height between the trigger conductive box 3 and the suspension arm is converted to be 1.5 meters; as another example, based on the requirement of 110kV being not less than 5 meters, the predetermined height between the trigger conductive box 3 and the boom arm is converted to 1.2 meters, and so on.
In one example, as shown in fig. 7, the power source 41 is an 8V button cell battery, and the alarm circuit 42 includes a hold relay, an LED light, and an alarm.
When the arm is lifted and lowered beyond a predetermined height to press the pressing plate 33, the elastic element 33 is compressed and the movable plate 32 is lifted and moved toward the bottom wall of the trigger conductive box 3, so that the upper conductive strip 35 contacts the lower conductive strip 36, and the alarm circuit 42 is connected to the power supply 41. After the loop is conducted, a starting coil t of the relay z is kept excited, a normally open contact t-1 of the starting coil t is closed after the starting coil t is excited, and the circuit conduction alarm J gives out an alarm sound until the circuit is kept magnetized until the circuit is reset.
At the moment, an operator of the operation crane needs to stop operating to avoid accidents, the operation crane is lowered to a safe position to be operated, the manual reset case key TA is reset, the reset coil r of the hold relay z is excited, the starting coil t is demagnetized to open the normally open contact t-1, and the alarm is eliminated.
As shown in fig. 8, an application scenario of the alarm device for preventing the operation crane and the high-voltage live equipment from being mistakenly touched according to the embodiment of the present invention is further described:
firstly, fixedly mounting a bottom plate 1 of an alarm device on the outer top end of an existing operating room (not shown) of an operating crane through screws or super glue;
secondly, obtaining the type of the high-voltage live equipment, and converting out the preset height between the trigger conductive box 3 and the suspension arm;
and thirdly, mounting the extension plate 2, so that after one outer cascade plate is fixed with the bottom plate 1 and the other outer cascade plate is fixed with the trigger conductive box 3, the angle and the height of the trigger conductive box 3 are directly adjusted by an adjusting valve, and the trigger conductive box 3 is ensured to be positioned right above the suspension arm and has a preset height from the suspension arm. If the requirement of the preset height cannot be met, adding one or more cascade plates between the two outer cascade plates for cascade connection, and adjusting the angle and the height by an adjusting valve to ensure that the trigger conductive box 3 is positioned right above the suspension arm and meets the requirement of the preset height;
and fourthly, operating the crane operator, wherein if the boom is lifted to exceed the predetermined height and presses the pressing plate 33, the elastic element 33 is compressed and the movable plate 32 is lifted to move towards the bottom wall of the trigger conductive box 3, so that the upper conductive strip 35 is contacted with the lower conductive strip 36, and the loop conduction of the alarm circuit 42 and the power supply 41 is realized to alarm. At this time, the operator of the working crane should stop the operation to avoid the occurrence of an accident, and let the working crane lower to a safe position.
And fifthly, eliminating the alarm.
The embodiment of the invention has the following beneficial effects:
1. according to the invention, after the base plate is fixed at the outer top end of the existing operation chamber of the operation crane, the trigger conductive box is extended to be right above the existing suspension arm of the operation crane through the extension plate, and the suspension arm has a preset height from the suspension arm, if the suspension arm is lifted to exceed the preset height and presses the pressing plate on the trigger conductive box, the upper conductive bar and the lower conductive bar in the trigger conductive box are contacted, so that an alarm circuit in the alarm box is connected with a power supply to alarm, and the error collision of the suspension arm and high-voltage live equipment due to insufficient distance is avoided;
2. the invention can also predefine the different heights of the distance between the trigger conductive box and the existing suspension arm of the operation crane according to the actual requirement and the type of the high-voltage live equipment, so that the extension height and the angle of the extension plate can be adjusted, thereby meeting the requirement of the safe distance range with different live high-voltage equipment;
3. the invention adopts a modular structure design, so that the whole device has a simple structure and is time-saving and labor-saving to operate.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (7)
1. An alarm device for preventing an operation crane and high-voltage live equipment from being mistakenly touched is arranged on the operation crane and is characterized by comprising a bottom plate, an extension plate, a trigger conductive box and an alarm box; wherein the content of the first and second substances,
the bottom plate is fixedly arranged on the outer top end of an existing operating room of the operation crane;
the extension plate is composed of at least two cascade plates; one outer cascade plate of the extension plate is fixedly arranged on the bottom plate, a fixing position for fixing the trigger conductive box is formed on the other outer cascade plate, and two adjacent cascade plates in the middle are fixed after the angle and the height between the two cascade plates are adjusted through an adjusting valve;
the trigger conductive box comprises a box body, a movable plate, a pressure plate, an elastic element, an upper conductive strip and a lower conductive strip; the box body is an insulating part, is fixed on the outer side cascade plate of the extension plate and has a downward opening, and the inner bottom wall of the box body is fixed with the upper conductive bar; the movable plate is an insulating part, is embedded in the box body and is abutted against the opening of the box body, the lower conducting bar is fixed on the side surface of one side of the movable plate facing the inner bottom wall of the box body, and a first fixing area for fixing one end of the elastic element is formed on the side surface of one side far away from the inner bottom wall of the box body; the pressing plate is positioned outside the box body and arranged towards the existing suspension arm direction of the operation crane, and a second fixing area for fixing the other end of the elastic element is formed on the side surface of one side of the pressing plate facing the movable plate; the elastic element is fixed between the movable plate and the pressing plate; the upper conducting bar and the lower conducting bar are externally connected with an electric lead, and a certain movable distance is reserved between the upper conducting bar and the lower conducting bar;
the alarm box comprises a power supply and an alarm circuit; one end of the power supply is connected with the alarm circuit in series and is connected with the upper conductive bar through an electric lead externally connected with the upper conductive bar, and the other end of the power supply is connected with the lower conductive bar through an electric lead externally connected with the lower conductive bar;
when the trigger conductive box extends to the position right above an existing suspension arm of the operation crane through the extension plate and is spaced from the suspension arm by a preset height, if the suspension arm is lifted to exceed the preset height and presses the pressing plate, the movable plate is lifted to move towards the inner bottom wall of the trigger conductive box, so that the upper conductive strips are contacted with the lower conductive strips, and an alarm circuit in the alarm box is connected with a power supply to alarm; if the lifting arm is lifted to be lower than the preset height and does not extrude the pressing plate, the movable plate is pulled downwards under the action of the gravity of the pressing plate to move away from the inner bottom wall of the trigger conductive box, so that the upper conductive strips are not in contact with the lower conductive strips, and the alarm circuit in the alarm box does not give an alarm because the alarm circuit is not connected with a power supply.
2. The warning device for preventing the accidental collision of the working crane and the high-voltage live equipment as claimed in claim 1, wherein the base plate is fixed with an existing operating room of the working crane through screws.
3. The warning device for preventing the accidental collision of the working crane and the high-voltage live-line equipment as claimed in claim 2, wherein at least one of the elastic elements is a spring.
4. The apparatus according to claim 3, wherein the alarm box is disposed adjacent to an existing operating room of the working crane.
5. The warning device for preventing the accidental collision of the working crane and the high-voltage live equipment as claimed in claim 4, wherein the power supply is a lithium battery.
6. The warning device for preventing the accidental collision of the working crane and the high-voltage live equipment as claimed in claim 5, wherein the warning circuit comprises a holding relay, an LED lamp and a warning device.
7. The warning device for preventing the erroneous collision of the working crane with the high-voltage electrified equipment as claimed in claim 6, wherein the predetermined height is determined based on the type of the high-voltage electrified equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111514720.6A CN114229706A (en) | 2021-12-13 | 2021-12-13 | Alarm device for preventing mistaken collision of operation crane and high-voltage live equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111514720.6A CN114229706A (en) | 2021-12-13 | 2021-12-13 | Alarm device for preventing mistaken collision of operation crane and high-voltage live equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114229706A true CN114229706A (en) | 2022-03-25 |
Family
ID=80755046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111514720.6A Pending CN114229706A (en) | 2021-12-13 | 2021-12-13 | Alarm device for preventing mistaken collision of operation crane and high-voltage live equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114229706A (en) |
-
2021
- 2021-12-13 CN CN202111514720.6A patent/CN114229706A/en active Pending
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