CN116699468A - Inspection instrument for judging ground wire of crane - Google Patents
Inspection instrument for judging ground wire of crane Download PDFInfo
- Publication number
- CN116699468A CN116699468A CN202310754071.XA CN202310754071A CN116699468A CN 116699468 A CN116699468 A CN 116699468A CN 202310754071 A CN202310754071 A CN 202310754071A CN 116699468 A CN116699468 A CN 116699468A
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- receiver
- transmitter
- signal
- crane
- grounding
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- 238000007689 inspection Methods 0.000 title claims abstract description 20
- 238000012795 verification Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 6
- 239000004020 conductor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000523 sample Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Cable Installation (AREA)
Abstract
The invention provides an inspection instrument for judging a crane grounding wire, which comprises a transmitter and a receiver; the transmitter is arranged at least one grounding point arranged on the crane, and the receiver is arranged at one grounding end connected with the body of the crane; the transmitter is used for responding to a starting instruction to generate an output signal and transmitting the output signal to the grounding end through the grounding point and the vehicle body; the receiver is used for collecting the output signal received by the grounding end, verifying the output signal, and recording a signal receiving condition after the verification is successful; the receiver is also used for judging whether the grounding wire is disconnected according to all recorded signal receiving conditions, and judging that the grounding wire is disconnected and alarming when the interval time between any two signal receiving conditions exceeds a preset time threshold value. The receiver of the invention always detects the pulse signal, judges that the ground wire is disconnected, and sends out an alarm.
Description
Technical Field
The invention relates to the technical field of crane grounding wire judgment, in particular to an inspection instrument for crane grounding wire judgment.
Background
The high-voltage transformer station and other places with high-voltage cables exposed are easy to be dangerous in hoisting operation. The crane arm and the car body are both made of metal materials, and belong to conductors. In addition, the crane arm needs to be stretched or rotated in the operation process, the operation range is large, and the crane arm is easy to touch the high-voltage cable.
After the crane touches the electrified wire, the current is conducted through the metal suspension arm, so that the whole automobile body is electrified. Workers on and near the vehicle are shocked by the contact voltage and the step voltage, respectively. Because the high-voltage line has strong electric power and high voltage level, the person who is shocked easily gets injured and dies. The electric shock protection measures of the crane are insufficient, so that the crane becomes a serious hidden trouble which always threatens the safety of crane operators for many years.
To solve this problem, the crane is often grounded, so that the current is quickly conducted to the ground, protecting the staff. However, the existing scheme can only visually check whether the grounding is performed or not, and cannot accurately ensure that the grounding effect of the grounding wire is still good after a period of working such as crane rotation.
Disclosure of Invention
The invention aims to provide an inspection instrument for judging a crane grounding wire, which solves the technical problem of how to accurately and quickly determine whether the crane grounding wire is good or not.
In one aspect, there is provided an inspection apparatus for crane ground wire determination, comprising:
a transmitter and a receiver;
the transmitter is arranged at least one grounding point arranged on the crane, and the receiver is arranged at one grounding end connected with the body of the crane;
the transmitter is used for responding to a starting instruction to generate an output signal and transmitting the output signal to the grounding end through the grounding point and the vehicle body;
the receiver is used for collecting the output signal received by the grounding end, verifying the output signal, and recording a signal receiving condition after the verification is successful;
the receiver is also used for judging whether the grounding wire is disconnected according to all recorded signal receiving conditions, and judging that the grounding wire is disconnected and alarming when the interval time between any two signal receiving conditions exceeds a preset time threshold value.
Preferably, the transmitter includes:
the transmitter comprises a transmitter shell, a transmitter circuit board and a transmitter battery, wherein the transmitter circuit board and the transmitter battery are arranged in the transmitter shell and are electrically connected;
the front end of the transmitter shell is provided with a transmitting terminal, the transmitting terminal is fixed in the transmitter shell through a transmitting terminal fixing screw, and the transmitting terminal is electrically connected with the transmitting circuit board.
Preferably, the transmitter further comprises:
and the emitter upper shell is fixed at the tail end of the emitter shell and sleeved on the outer side of the emitting circuit board, and is used for preventing liquid from flowing into the emitter shell.
Preferably, the transmitter further comprises:
the permanent magnets are uniformly clamped and fixed at the front end of the emitter shell, and the permanent magnets are used for fixing the emitter at the grounding point on the crane.
Preferably, the receiver comprises:
a receiver housing in which a receiver circuit board and a receiver battery are disposed; the receiver circuit board is electrically connected with the receiver battery.
Preferably, the receiver further comprises:
the magnetic conductive block is fixed at the bottom end of the receiver shell and is used for detecting the signal receiving condition of the grounding end.
Preferably, the receiver comprises:
and the receiver upper shell is fixed at the top end of the receiver shell and sleeved outside the receiver circuit board, and is used for preventing liquid from flowing into the receiver shell.
Preferably, the transmitting circuit board mixes the loading fingerprint authentication signal according to a preset signal, and outputs the mixed signal to the grounding point of the crane through the transmitting terminal.
Preferably, the receiver circuit board receives the signal detected by the magnetic conductive block, verifies the received signal according to a preset signal characteristic, records the signal as a one-time effective signal after the verification is passed, and performs continuous verification judgment to generate a test result.
In summary, the embodiment of the invention has the following beneficial effects:
according to the inspection instrument for judging the ground wire of the crane, the emitter is adsorbed on the crane body or the suspension arm through the magnet, and the discharge point of the emitter is connected with the body through the conductor. The receiver is adsorbed in ground round bar or the interim earthing pole of toper through magnet, and the probe wire is good with ground round bar or the interim earthing pole of toper contact, and the receiver is detecting pulse signal all the time, when 3 continuous times do not detect pulse signal, judges that the ground connection disconnection, sends the warning.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that it is within the scope of the invention to one skilled in the art to obtain other drawings from these drawings without inventive faculty.
Fig. 1 is a schematic diagram of an inspection apparatus for determining a ground wire of a crane according to an embodiment of the invention.
Fig. 2 is a schematic diagram of an emitter according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a receiver according to an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent.
Referring to fig. 1, a schematic diagram of an embodiment of an inspection apparatus for determining a crane ground wire according to the present invention is shown. In this embodiment, it includes:
a transmitter 101 and a receiver 102; the transmitter 101 is arranged at least one grounding point arranged on the crane, and the receiver 102 is arranged at a grounding end connected with the body of the crane; the transmitter 101 is configured to generate an output signal in response to a start instruction, and transmit the output signal to the ground terminal through the ground point and the vehicle body; the receiver 102 is configured to collect the output signal received by the ground terminal, verify the output signal, and record a signal receiving condition after the verification is successful; the receiver 102 is further configured to determine whether the ground line is disconnected according to all recorded signal receiving conditions, and determine that the ground line is disconnected and alarm when the interval time between any two signal receiving conditions exceeds a preset time threshold. It will be appreciated that the present inspection instrument is comprised of two modules, one module being the transmitter 101, which is attached to the crane body or boom by a magnet. And the discharge point is connected with the vehicle body through a conductor. The other module is a receiver 102 that is also attracted to the ground rod or tapered temporary ground rod by a magnet and the probe wire is in good contact with the ground rod or tapered temporary ground rod. The transmitter 101 emits a modulated signal every 1 second, and the signal sequentially passes through the grounding point a, the crane body, the grounding point B, the grounding wire and reaches the grounding end C. The receiver 102 mounted on the ground terminal C always detects the pulse signal, and determines that the ground connection is broken when no pulse signal is detected 3 consecutive times. And sending out an alarm.
In a specific embodiment, as shown in fig. 2, the transmitter 101 includes: a transmitter housing 2, in which a transmitter circuit board 1 and a transmitter battery 3 are arranged, wherein the transmitter circuit board 1 is electrically connected with the transmitter battery 3; the front end of the transmitter housing 2 is provided with a transmitting terminal 4, the transmitting terminal 4 is fixed in the transmitter housing 2 through a transmitting terminal fixing screw 5, and the transmitting terminal 4 is electrically connected with the transmitting circuit board 1. And an emitter upper case 7 fixed to the rear end of the emitter housing 2 and sleeved on the outside of the emitter circuit board 1 for preventing liquid from flowing into the emitter housing 2. The permanent magnets 6 are uniformly fastened and fixed at the front end of the emitter shell 2, and the permanent magnets 6 are used for fixing the emitter 101 at a grounding point on the crane.
It will be appreciated that the transmitter circuit board 1 is mounted inside the transmitter housing 2 and that the transmitter battery 3 is connected to the transmitter circuit board 1 for power. The 4 permanent magnets are arranged at the fixing positions of four corners of the bottom of the emitter shell 2. The transmitting terminal 4 is arranged at the bottom center of the transmitter shell 2, and the transmitting circuit board 1, the transmitter shell 2 and the transmitting terminal 4 are fixedly connected through fixing screws; so that the transmitting circuit board 1 is kept in communication with the transmitting terminal 4. The upper emitter shell 7 is arranged on the upper emitter shell 2 and plays a role in waterproof protection.
In this embodiment, as shown in fig. 3, the receiver 102 includes: a receiver housing 9 in which a receiver circuit board 8, a receiver battery 10 are disposed; the receiver circuit board 8 is electrically connected with the receiver battery 10. And a magnetic conductive block 11 is fixed at the bottom end of the receiver housing 9, and the magnetic conductive block 11 is used for detecting the signal receiving condition of the grounding end. A receiver upper case 13 fixed to the top end of the receiver housing 9 and fitted over the outside of the receiver circuit board 8 for preventing liquid from flowing into the receiver housing 9. It will be appreciated that the receiver circuit board 8 is mounted inside the receiver housing 9 and that the receiver battery 10 is connected to the receiver circuit board 8 for power. The magnetic conductive block 11 is arranged at the bottom of the receiver shell 9, and the magnetic conductive block 11, the receiver shell 9 and the receiver circuit board 8 are connected and fixed through the fixing screw 12. So that the receiver 102 magnetically conductive block 11 is in communication with the receiver circuit board 8. The receiver housing 9 is mounted on the receiver housing 9 for waterproof protection.
In this embodiment, the transmitting circuit board 1 mixes the preset signal with the fingerprint loading authentication signal, and outputs the authenticated output signal to the grounding point of the crane through the transmitting terminal 4. The receiver circuit board 8 receives the signal detected by the magnetic conductive block 11, verifies the received signal according to the preset signal characteristics, records the signal as a once effective signal after verification, and performs continuous verification and judgment to generate a test result. It can be understood that when the crane body is stopped during detection, two grounding points A and B are arranged on the crane body. Wherein the transmitter 101 is magnetically mounted at the connection a, and ensures that the transmitting terminal 4 is in good contact with the connection a. The junction of the vehicle body B is connected to the ground terminal C by a temporary ground cable. The magnetic attraction installation and grounding end C of the receiver 102 ensures that the magnetic conductive block 11 of the receiver 102 is in good contact with the C.
The transmitter 101 is activated, the transmitter 101 is powered, the voltage is boosted by the boost circuit through the internal transformer, and the voltage is phase-locked with the pre-prepared modulated signal and then output. The high voltage and low current signals generated by the device are transmitted to the transmitting terminal 4 through the fixing screw; and then flows into the crane body through the joint of the crane body A, and the signal searches the shortest discharging path and flows into the grounding wire because the joint of the crane body B is well grounded.
The signal reaches the ground terminal C through the ground wire and the receiver 102 mounted on the ground terminal C, and the magnetic conductive block 11 receives a part of the signal and transmits the signal to the receiving circuit board through the fixing screw.
The receiving circuit board performs signal detection and signal amplification, and the processor performs fingerprint authentication on the received signal, and if the received signal is confirmed to be the signal sent by the transmitter 101, the received signal is recorded once. If no legal signal is received for 3 seconds, the grounding wire is considered to be disconnected, and an alarm is triggered immediately.
In summary, the embodiment of the invention has the following beneficial effects:
according to the inspection instrument for judging the ground wire of the crane, the emitter is adsorbed on the crane body or the suspension arm through the magnet, and the discharge point of the emitter is connected with the body through the conductor. The receiver is adsorbed in ground round bar or the interim earthing pole of toper through magnet, and the probe wire is good with ground round bar or the interim earthing pole of toper contact, and the receiver is detecting pulse signal all the time, when 3 continuous times do not detect pulse signal, judges that the ground connection disconnection, sends the warning.
The foregoing disclosure is illustrative of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (9)
1. An inspection instrument for crane ground wire determination, comprising:
a transmitter and a receiver;
the transmitter is arranged at least one grounding point arranged on the crane, and the receiver is arranged at one grounding end connected with the body of the crane;
the transmitter is used for responding to a starting instruction to generate an output signal and transmitting the output signal to the grounding end through the grounding point and the vehicle body;
the receiver is used for collecting the output signal received by the grounding end, verifying the output signal, and recording a signal receiving condition after the verification is successful;
the receiver is also used for judging whether the grounding wire is disconnected according to all recorded signal receiving conditions, and judging that the grounding wire is disconnected and alarming when the interval time between any two signal receiving conditions exceeds a preset time threshold value.
2. The inspection apparatus of claim 1, wherein the transmitter comprises:
the transmitter comprises a transmitter shell, a transmitter circuit board and a transmitter battery, wherein the transmitter circuit board and the transmitter battery are arranged in the transmitter shell and are electrically connected;
the front end of the transmitter shell is provided with a transmitting terminal, the transmitting terminal is fixed in the transmitter shell through a transmitting terminal fixing screw, and the transmitting terminal is electrically connected with the transmitting circuit board.
3. The inspection apparatus of claim 2, wherein the transmitter further comprises:
and the emitter upper shell is fixed at the tail end of the emitter shell and sleeved on the outer side of the emitting circuit board, and is used for preventing liquid from flowing into the emitter shell.
4. The inspection apparatus of claim 3, wherein the transmitter further comprises:
the permanent magnets are uniformly clamped and fixed at the front end of the emitter shell, and the permanent magnets are used for fixing the emitter at the grounding point on the crane.
5. The inspection apparatus of claim 4, wherein the receiver comprises:
a receiver housing in which a receiver circuit board and a receiver battery are disposed; the receiver circuit board is electrically connected with the receiver battery.
6. The inspection apparatus of claim 5, wherein the receiver further comprises:
the magnetic conductive block is fixed at the bottom end of the receiver shell and is used for detecting the signal receiving condition of the grounding end.
7. The inspection apparatus of claim 6, wherein the receiver comprises:
and the receiver upper shell is fixed at the top end of the receiver shell and sleeved outside the receiver circuit board, and is used for preventing liquid from flowing into the receiver shell.
8. The inspection apparatus of claim 7, wherein the transmitting circuit board mixes the loading fingerprint authentication signal according to a preset signal and outputs the mixed signal to the ground point of the crane through the transmitting terminal.
9. The inspection apparatus according to claim 8, wherein the receiver circuit board receives the signal detected by the magnetic conductive block, verifies the received signal according to a preset signal characteristic, records as a valid signal after the verification is passed, and performs continuous verification judgment to generate the test result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310754071.XA CN116699468A (en) | 2023-06-25 | 2023-06-25 | Inspection instrument for judging ground wire of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310754071.XA CN116699468A (en) | 2023-06-25 | 2023-06-25 | Inspection instrument for judging ground wire of crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116699468A true CN116699468A (en) | 2023-09-05 |
Family
ID=87823735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310754071.XA Pending CN116699468A (en) | 2023-06-25 | 2023-06-25 | Inspection instrument for judging ground wire of crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116699468A (en) |
-
2023
- 2023-06-25 CN CN202310754071.XA patent/CN116699468A/en active Pending
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