CN105955250B - Drone version step voltage alarm trolley and its alarm method - Google Patents
Drone version step voltage alarm trolley and its alarm method Download PDFInfo
- Publication number
- CN105955250B CN105955250B CN201610308706.3A CN201610308706A CN105955250B CN 105955250 B CN105955250 B CN 105955250B CN 201610308706 A CN201610308706 A CN 201610308706A CN 105955250 B CN105955250 B CN 105955250B
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- 238000000034 method Methods 0.000 title abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 57
- 229910052751 metal Inorganic materials 0.000 claims abstract description 57
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 238000010276 construction Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 46
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000003447 ipsilateral effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000003909 pattern recognition Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/0011—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots associated with a remote control arrangement
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/02—Control of position or course in two dimensions
- G05D1/021—Control of position or course in two dimensions specially adapted to land vehicles
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Aviation & Aerospace Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Automation & Control Theory (AREA)
- Handcart (AREA)
- Emergency Alarm Devices (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of drone version step voltage alarm trolley and its alarm methods, the controller being wirelessly connected including a remote controler and in remote control vehicle body with it, the remote control vehicle body is anterior-posterior length adjustable structure, front chassis is provided inwardly with slot, rear chassis is provided inwardly with inserted link, inserted link is slidably plugged in slot, the slot is equipped with its fastener between inserted link, independent driving motor is equipped in front of front chassis, one of described front and back wheel is metal wheel construction, metal wheel is connect by wheel hub with slip ring, it is electrically connected between three, slip ring is connected by dead ring and axle insulation, slip ring is respectively connected to be set to the input terminal of step voltage alarm in remote control vehicle body by the elastic slice in remote control vehicle body that is fixed on being slidably connected with it.The detection to trolley progress long-distance remote control, to carrying out around the equipment of failure from the distant to the near may be implemented in the present invention, issues alarm when step voltage is more than setting voltage, substantially reduces personal casualty accident of getting an electric shock.
Description
Technical field
The present invention relates to a kind of drone version step voltage alarm trolley and its alarm methods.
Background technique
When a live wire of overhead transmission line is disconnected to fall to the ground, pick-up point is identical as the potential of live wire, electric current
Will be wandering from the pick-up point of conducting wire to the earth, then on ground centered on conducting wire pick-up point, form a Potential Distributing
Region, remoter from pick-up point, electric current more disperses, and ground potential is also lower.If people or livestock station apart from electric wire pick-up point 8~
Within 10 meters.Electric shock accidents may occur, this electric shock is called step voltage electric shock.
When people is by step voltage, although electric current is the lower part of the body along people, is formed again to foot and the earth from foot through leg, crotch
Access does not pass through the vitals of human body, as relatively safer.But it is practical really not so！Because people by it is higher across
When walking voltage effect, both feet can knot, and body is made to fall on the ground.This not only increases the electric current acted on body, but also makes
Electric current changes by the path of human body, entirely possible to flow through human body vitals, such as from the beginning in one's hands or foot.Empirical evidence, people fall
Continuous action 2 seconds, this electric shock will be fatal in vivo for electric current behind ground.
The distance of the bipod distance landing electric wire of people differs, and ground is conductor, and resistance differs when electric current passes through different distance,
According to Ohm's law
U=IR,
Bipod forms voltage difference, and then electric current passes through human body.At this moment it needs to close the feet and can get rid of danger.
When step voltage electric shock typically occurs in high-tension bus-bar landing, but also can not be off one's guard to low tension wire landing.
According to test, when ox station is in paddy field, if step voltage of the front and back across between reaches 100 volts or so, ox will fall down, electric current
Its heart can be usually flowed through, the electric shock time is long, and ox can be dead.
Existing treatment measures have:
1, when a people realize step voltage threaten when, should hasten both feet and together, then horse back use one leg or
Two legs jump out of danger area.
2, it adds earthing pole and changes step voltage
Adding vertical grounding electrode has the function of highly significant for reducing touch voltage and step voltage, first is that vertical pole
Introducing, reduce ground potential liter (GPR), and contact and step voltage have direct relationship with GPR.Second is that because adding
Vertically extremely after, most of fault current by vertical pole flow into the earth, accordingly reduce the diffusing amount of horizontal conductor, therefore earth's surface
The horizontal direction current density in face greatly reduces, and horizontal direction electric field strength is caused to substantially reduce.
Staff is still placed in dangerous electric field by common step voltage warning device, it is easy to generate person electric shock
Accident.Therefore a kind of controllable, observable, the step voltage warning device that can be alarmed seem very necessary
Summary of the invention
The technical problem to be solved by the present invention is a kind of remote operated vehicle of the present invention and its alarm method are provided, it being capable of long distance
Spy from the step voltage test device on remote operated vehicle, to dangerous voltage from the distant to the near is carried out around the equipment of failure
Survey issues alarm when step voltage is more than setting voltage, substantially reduces personal casualty accident of getting an electric shock.
The technical solution of the technical problem to be solved in the present invention is:
Drone version step voltage alarm trolley, the control being wirelessly connected including a remote controler and in remote control vehicle body with it
Device, the remote control vehicle body are anterior-posterior length adjustable structure, and front chassis and rear chassis including fore-aft adjustable, front chassis is provided inwardly with
Slot, rear chassis are provided inwardly with inserted link, and inserted link is slidably plugged in slot, and it is tight between inserted link that the slot is equipped with it
It is adjustable that remote control vehicle body anterior-posterior length may be implemented by being slidably connected for inserted link and slot in firmware；Left drive is equipped in front of front chassis
Move motor-driven preceding revolver, the front right wheel of right driving motor driving, the left driving motor and right driving motor and same remote control
The controller connection of device wireless connection, and turned to and retreated by remote control control, battery is electric with left driving respectively by controller
Machine is connected with right driving motor；One of described front and back wheel is metal wheel construction, and the metal wheel has identical as coaxial wheel
Outer diameter, metal wheel connect by wheel hub with slip ring, is electrically connected between three, and slip ring passes through dead ring and axle insulation
Connection, slip ring are fixed on elastic slice in remote control vehicle body with one and are slidably connected, and two in front and back wheel elastic slice is respectively connected to be set to distant
Control the input terminal of step voltage alarm on car body.
Preferably, the metal wheel is metal water tank wheel, and metal water tank wheel has outer diameter identical with coaxial wheel,
The metal water tank wheel has a cavity to store water, and metal water tank wheel side is equipped with water filling port, the metal water tank wheel
It is intermediate in the circumferential direction to be equipped with a groove, discharge outlet is evenly distributed on groove, metal water tank wheel is connect by wheel hub with slip ring, three
Between be electrically connected, slip ring is connected by dead ring and axle insulation, and slip ring is fixed in remote control vehicle body elastic slice sliding company with one
It connects, two in front and back wheel elastic slice is respectively connected to be set to the input terminal of step voltage alarm in remote control vehicle body.
Preferably, the metal water tank wheel controllably controls the water in it and flows out to draining by a solenoid valve or water pump
Mouthful.
Preferably, the metal wheel periphery is evenly equipped with the metal protuberance being electrically connected with metal wheel.
Preferably, the slot is set to front chassis two sides, correspondingly, being equipped with and the matched inserted link of slot in rear chassis.
Preferably, the slot is equipped with threaded hole, and the inserted link being slidably inserted into it is realized by the nut on threaded hole
The two is fixedly connected.
Preferably, the slot and the inserted link being slidably inserted into it are equipped at intervals with pin hole, and slot and inserted link pass through insertion
Positioning pin in pin hole realizes being fixedly connected for the two.
Based on the alarm method of drone version step voltage alarm trolley, include the following steps:
Step 1: according to the paces size of staff, front chassis and slot and inserted link on rear chassis are adjusted, so that distant
It controls car body to adjust to appropriate length, and is fastenedly connected.
Step 2: 4 alarm voltage of step voltage alarm is adjusted to OK range (0-36V), attention display can be shown
The voltage of setting.
Step 3: remote control vehicle body is placed at failure, by the walking of remote control control remote control vehicle body, passes through telecar
Former and later two metal wheels on body and ground face contact are simultaneously electrically connected to step voltage alarm.
If step voltage alarm is not alarmed, illustrate institute's search coverage safety, before personnel can be along detecting location
Into continuing to detect.
Preferably, the metal wheel is metal water tank wheel, and the water yield of metal water tank wheel can be controlled by controller, real
The contact measurement of existing step voltage alarm.
Excellent effect of the invention:
Remote operated vehicle of the present invention can allow on-site personnel to carry out long-distance remote control to trolley, set to failure
Standby surrounding carries out detection from the distant to the near, issues alarm when step voltage is more than setting voltage, substantially reduces person electric shock wound
Die accident.
Detailed description of the invention
Attached drawing described herein constitutes a part of the present patent application providing a further understanding of the present invention,
The illustrative embodiments of the present invention and their descriptions are used to explain the present invention, does not constitute improper limitations of the present invention.
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the general illustration of an embodiment of the present invention；
Fig. 2 is the structure chart of an embodiment of the present invention metal water tank wheel；
Fig. 3 is Fig. 2 sectional structure chart.
In figure；
1, remote control vehicle body；
11, front chassis, 111, slot, 112, pin hole,
12, rear chassis, 121, inserted link, 122, positioning pin,
13 left driving motors,
14 right driving motors,
15, axle,
16, driving wheel,
17, driven wheel
21, dead ring,
22, wheel hub,
23, metal water tank wheel, 231, groove, 232, discharge outlet, 233, water filling port,
24, slip ring,
25, elastic slice,
3, controller,
4, step voltage alarm,
5, battery.
Specific embodiment
Illustrate technology contents of the invention below by way of particular specific embodiment, those skilled in the art can be by this theory
The content that bright book discloses understands further advantage and effect of the invention easily.The present invention can also pass through other different specific realities
It applies example to be implemented or applied, the various details in this specification also can be based on different viewpoint and application, without prejudice to this hair
Various modifications and change are carried out under bright spirit.
Below in conjunction with attached drawing, the present invention is described in further detail.
In order to which from the remote right of safety, the step voltage that may injure human body makes detection and early warning, puts forward this hair
The bright drone version step voltage alarm trolley with innovative significance.
Drone version step voltage of the present invention is alarmed trolley, including a remote controler (not shown) and is located at remote control vehicle body 1
Upper and its controller 3 for being wirelessly connected.Remote controler is equipped with left and right wheels control button, and the advance that can control trolley falls back and turns
To passing through signal transmitting antenna emissioning controling signal, 30 meters of the controller maximum of control distance.
In order to adapt to the paces size of staff, the remote control vehicle body 1 is anterior-posterior length adjustable structure, including front and back can
The front chassis 11 and rear chassis 12 of tune, front chassis 11 are provided inwardly with slot 111, and rear chassis 12 is provided inwardly with inserted link 121, inserted link
121 are slidably plugged in slot 111, and 111 periphery of slot is equipped with 121 fastener of inserted link, pass through inserted link 121 and slot
111 be slidably connected, it is adjustable to may be implemented 1 anterior-posterior length of remote control vehicle body.
Specifically, the slot 111 is set to 11 two sides of front chassis, correspondingly, being equipped with and slot 111 in rear chassis 12
The inserted link 121 matched.Certainly, intensity is enough, is equipped with a root cutting slot 111 and a root cutting bar 121 is also feasible scheme.
In order to which the remote control vehicle body 1 for regulating anterior-posterior length is fixed on an entirety, the slot 111 is equipped with screw thread
Hole, the inserted link 121 being slidably inserted into it realize being fixedly connected for the two by the nut on threaded hole.
Feasible, the slot 111 is equipped at intervals with pin hole 112 with the inserted link 121 being slidably inserted into it, slot 111 with
Inserted link 121 realizes being fixedly connected for the two by the positioning pin 122 in insertion pin hole 112.
Referring to Fig. 1, it is seen that a horizontal line among remote control vehicle body 1 is that front chassis 11 and rear chassis 12 connect infall.
Remote control vehicle body 1 shows a kind of embodiment for for being electrically connected with the realization of positioning pin 122 by pin hole 112.
Generally, driving wheel 16 is equipped in front of front chassis 11,12 rear of rear chassis is equipped with driven wheel 17.Trolley uses bidentate
Turbin generator drives driving power big, is suitable for uneven ground.
Specifically, the preceding revolver that left driving motor 13 drives is equipped in front of front chassis 11, before right driving motor 14 drives
Right wheel, the left driving motor 13 and right driving motor 14 are connect with the controller 3 that same remote controler is wirelessly connected, and by remote controler
Control turns to and retreats, and battery 5 is connect with left driving motor 13 and right driving motor 14 respectively by controller 3.
In order to enable the detection electrode of step voltage alarm 4 can be adequately in electrical contact with ground, the front and back vehicle
Wheel one of be metal wheel construction, the metal wheel have outer diameter identical with coaxial wheel, metal wheel by wheel hub 22 with
Slip ring 24 connects, and is electrically connected between three, and slip ring 24 is connected by dead ring 21 and the insulation of axle 15, and slip ring 24 is fixed with one
It is slidably connected in elastic slice 25 in remote control vehicle body 1, two in front and back wheel elastic slice 25 is respectively connected to be set in remote control vehicle body 1 and stride
The input terminal of voltage alarms based on pattern recognition 4.
Female metal wheel for being to prevent from connecting with slip ring 24 that slip ring 24 passes through dead ring 21 and the insulation connection of axle 15
Between resistance reduce or short-circuit conditions occur, the reality that strides of simulation cannot be reflected.
Preferably, the metal wheel retrieves the not true of ipsilateral place's ground resistance in the non-ipsilateral setting of remote control vehicle body 1 as far as possible
Qualitative factor.
If the metal wheel periphery is evenly equipped with the metal protuberance being electrically connected with metal wheel, it is deep into ground
Under metal protuberance can come into full contact with the earth.
Preferably, referring to fig. 2,3, the metal wheel be metal water tank wheel 23, metal water tank wheel 23 has and coaxial wheel
Identical outer diameter, the metal water tank wheel 23 have a cavity to store water, and 23 side of metal water tank wheel is equipped with note
The mouth of a river 233, the metal water tank wheel 23 is intermediate in the circumferential direction to be equipped with a groove 231, is evenly distributed with discharge outlet 232 on groove 231,
Metal water tank wheel 23 is connect by wheel hub 22 with slip ring 24, is electrically connected between three, and slip ring 24 passes through dead ring 21 and axle
15 insulation connections, slip ring 24 are fixed on elastic slice 25 in remote control vehicle body 1 with one and are slidably connected, and two in front and back wheel elastic slice 25 is distinguished
It is connected to the input terminal for being set to step voltage alarm 4 in remote control vehicle body 1.
In order not to make the water for flowing through ground, the resistance value between two metal water tank wheels 23 is influenced, effectively reflects and strides
The actual value of voltage can install a solenoid valve or water pump in the metal water tank wheel 23, according to circumstances require, such as parking inspection
When survey, solenoid valve is controlled by controller 3 or water pump is open-minded, so that the water controlled in metal water tank wheel 23 is flowed through discharge outlet 232
Out to ground.In order to not influence measuring accuracy, the time of water outlet can also be set by controller 3.
Step voltage alarm 4 uses DF9000 ground network ground resistance measuring instrument, can acquire step voltage signal, measurement essence
Degree is high.
Application method of the invention are as follows:
1, according to the paces size of staff, front chassis 11 and slot 111 and inserted link 121 on rear chassis 12 are adjusted,
So that remote control vehicle body 1, which is adjusted, arrives appropriate length, and it is fastenedly connected.
2,4 alarm voltage of step voltage alarm is adjusted to OK range (0-36V), attention display can show and set
Voltage.
3, remote control vehicle body 1 is placed at failure, by the walking of remote control control remote control vehicle body 1, passes through remote control vehicle body 1
On former and later two metal wheels and ground face contact and be electrically connected to step voltage alarm 4.
If step voltage alarm 4 is not alarmed, illustrate institute's search coverage safety, before personnel can be along detecting location
Into continuing to detect.
After two metal wheel both end voltages are more than setting voltage, step voltage alarm 4 is alarmed, then illustrates trolley
Dangerous region is entered, anyone cannot readvance, and the position for specifically judging earth fault according to there is alarm place
It sets, and safety protection equipment is set.
Preferably, the metal wheel is metal water tank wheel 23, and the water outlet of metal water tank wheel 23 can be controlled by controller 3
Amount,
Realize the contact measurement of step voltage alarm 4.Such as it can be when remote control vehicle body 1 stops, in certain dry grounds
Carry out this operation.
Although this patent is explained with reference to preferred embodiment and attached drawing, above-mentioned explanation should be regarded as illustrative
And not restrictive, variation and modification that those skilled in the art's spirit according to the present invention is made, should belong to the guarantor of this patent
Protect range.
Claims (6)
- The trolley 1. drone version step voltage is alarmed, it is characterised in that:Including a remote controler and it is located at the controller (3) being wirelessly connected on remote control vehicle body (1) with it,The remote control vehicle body (1) is anterior-posterior length adjustable structure, and front chassis (11) and rear chassis (12) including fore-aft adjustable are preceding Chassis (11) is provided inwardly with slot (111), and rear chassis (12) is provided inwardly with inserted link (121), and inserted link (121) is slidably plugged in slotting In slot (111), the slot (111) is equipped with its fastener between inserted link (121), passes through inserted link (121) and slot (111) be slidably connected, it is adjustable to may be implemented remote control vehicle body (1) anterior-posterior length；Preceding revolver equipped with left driving motor (13) driving in front of front chassis (11), the front right wheel of right driving motor (14) driving, The left driving motor (13) and right driving motor (14) are connect with the controller (3) that same remote controler is wirelessly connected, and by being remotely controlled Device control turns to and retreats, and battery (5) is connected with left driving motor (13) and right driving motor (14) respectively by controller (3) It connects；One of one of front vehicle wheel and rear wheel are metal wheel construction, and the metal wheel is metal water tank wheel (23), metal water tank wheel (23) there is outer diameter identical with coaxial wheel, the metal water tank wheel (23) has a cavity to store water, gold Belong to water tank wheel (23) side and be equipped with water filling port (233), the metal water tank wheel (23) is intermediate in the circumferential direction to be equipped with a groove (231), uniformly distributed discharge outlet (232), metal water tank wheel (23) are connect by wheel hub (22) with slip ring (24) on groove (231), and three It is electrically connected between person, slip ring (24) is connected by dead ring (21) and axle (15) insulation, and slip ring (24) is fixed on distant with one Elastic slice (25) is slidably connected in control car body (1), and two in front and back wheel elastic slice (25) is respectively connected to be set on remote control vehicle body (1) The input terminal of step voltage alarm (4).
- The trolley 2. a kind of drone version step voltage according to claim 1 is alarmed, it is characterised in that:The metal water tank wheel (23) controllably controls the water in it and flows out to discharge outlet (232) by a solenoid valve or water pump.
- The trolley 3. a kind of drone version step voltage according to claim 1 is alarmed, it is characterised in that:The metal wheel periphery is evenly equipped with the metal protuberance being electrically connected with metal wheel.
- The trolley 4. a kind of drone version step voltage according to claim 1 is alarmed, it is characterised in that:The slot (111) is set to front chassis (11) two sides, matches correspondingly, being equipped in rear chassis (12) with slot (111) Inserted link (121).
- The trolley 5. a kind of drone version step voltage according to claim 1 is alarmed, it is characterised in that:The slot (111) is equipped with threaded hole, and the inserted link (121) being slidably inserted into it realizes two by the nut on threaded hole Person's is fixedly connected.
- The trolley 6. a kind of drone version step voltage according to claim 1 is alarmed, it is characterised in that:The slot (111) and the inserted link (121) being slidably inserted into it are equipped at intervals with pin hole (112), slot (111) and inserted link (121) by the positioning pin (122) in insertion pin hole (112), being fixedly connected for the two is realized.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610308706.3A CN105955250B (en) | 2016-05-11 | 2016-05-11 | Drone version step voltage alarm trolley and its alarm method |
| CN201810922306.0A CN109189055B (en) | 2016-05-11 | 2016-05-11 | Detection method of step voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610308706.3A CN105955250B (en) | 2016-05-11 | 2016-05-11 | Drone version step voltage alarm trolley and its alarm method |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810922306.0A Division CN109189055B (en) | 2016-05-11 | 2016-05-11 | Detection method of step voltage |
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| CN105955250A CN105955250A (en) | 2016-09-21 |
| CN105955250B true CN105955250B (en) | 2019-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810922306.0A Active CN109189055B (en) | 2016-05-11 | 2016-05-11 | Detection method of step voltage |
| CN201610308706.3A Active CN105955250B (en) | 2016-05-11 | 2016-05-11 | Drone version step voltage alarm trolley and its alarm method |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810922306.0A Active CN109189055B (en) | 2016-05-11 | 2016-05-11 | Detection method of step voltage |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108816778A (en) * | 2018-06-11 | 2018-11-16 | 太仓市兴益披覆有限公司 | A kind of logistics sorting equipment |
| CN108855958A (en) * | 2018-06-11 | 2018-11-23 | 太仓市兴益披覆有限公司 | Logistic sorting machine |
| CN108704858A (en) * | 2018-06-11 | 2018-10-26 | 太仓市兴益披覆有限公司 | A kind of logistic sorting machine |
| CN108557403A (en) * | 2018-06-11 | 2018-09-21 | 太仓市兴益披覆有限公司 | Sorting equipment for logistics |
| CN109188059B (en) * | 2018-10-09 | 2023-09-05 | 国网河南省电力公司新密市供电公司 | Step voltage detection method and device |
| CN109398008A (en) * | 2018-10-26 | 2019-03-01 | 含山县玉龙米业有限公司 | A kind of anticreep inspection trolley of rice processing station-service |
| CN110824235A (en) * | 2019-11-05 | 2020-02-21 | 广东恒普建设工程有限公司 | Step voltage detection device |
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| Publication number | Publication date |
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| CN109189055A (en) | 2019-01-11 |
| CN109189055B (en) | 2021-08-10 |
| CN105955250A (en) | 2016-09-21 |
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