CN107386768A - A kind of fast reaction overturning-preventing shaft tower pedestal - Google Patents
A kind of fast reaction overturning-preventing shaft tower pedestal Download PDFInfo
- Publication number
- CN107386768A CN107386768A CN201611017240.8A CN201611017240A CN107386768A CN 107386768 A CN107386768 A CN 107386768A CN 201611017240 A CN201611017240 A CN 201611017240A CN 107386768 A CN107386768 A CN 107386768A
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- China
- Prior art keywords
- shaft tower
- overturning
- fast reaction
- base body
- pressure port
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/22—Sockets or holders for poles or posts
- E04H12/2284—Means for adjusting the orientation of the post or pole
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/22—Sockets or holders for poles or posts
- E04H12/2207—Sockets or holders for poles or posts not used
- E04H12/2215—Sockets or holders for poles or posts not used driven into the ground
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a kind of fast reaction overturning-preventing shaft tower pedestal, including base body, the cavity of cylinder is set in the base body, set in the cavity and tilt mechanism for monitoring, controlling organization and balance adjustment mechanism, the base body top sets fixed supporting mechanism, the fixed supporting mechanism includes the pressure port that the base body top is uniformly arranged several outward openings, and the drive mechanism of the movable push rod being engaged with its section and the driving movable push rod is set in the pressure port.Inclination of the present invention to overhead line structures serves good monitoring, shaft tower inclination information can be sent to Surveillance center in time, realize fast reaction, and the particular design for passing through pedestal, carry certain overturning-preventing function, avoid shaft tower from tilting and effectively cause bigger electric power accident, raced against time for the arrival of repair personnel, reduce loss caused by accident.
Description
Technical field
The present invention relates to shaft tower overturning-preventing technical field, and in particular to a kind of fast reaction overturning-preventing shaft tower pedestal.
Background technology
China is vast in territory, and can exploit water power resources 2/3rds are distributed in northwest and southwest；Coal resources are big
Part is contained northern western with North China in the Northwest；And load center is concentrated mainly on the coastal region in east China, thus make
It is distributed into electric power resource with load center uneven, along with Electricity Demand continues to increase, power network scale expands rapidly,
The research of UHV transmission is brought into schedule.
Extra high voltage line has the characteristics that voltage class is high, transmission capacity is big, long transmission distance, how to ensure extra-high piezoelectricity
Safe and stable, the reliability service of net just become critical problem.And shaft tower tilts to be used as and causes down tower, broken string, tripping operation etc.
The arch-criminal of disaster, once occur, caused by economic loss will be difficult to estimate, therefore develop a set of gradient of extra-high voltage tower
On-line monitoring system is of great significance for the tool that solves the above problems.
External at present that electric force pole tower is monitored in real time using laser or far infrared mode more, its advantage is precision
Height, it is more that shortcoming is that single-pole tower sets mounted point, and power line power supply is set up to device, and measurement accuracy climate condition often
（Mist, rain）Deng influence.It is domestic to use manual inspection more or patrol survey, estimated by way of manual patrol and shaft tower quilt whether occur
The situation of damage, whether the mode shortcoming of this range estimation is that polling period is long, precision is low, can not be generated in early detection shaft tower
Tilt, particularly remote mountain areas or backwoods, for the slow inclination of electric force pole tower or collapse and can not find and handle in time.Together
When, the influence that the mode of this manual patrol is vulnerable to weather condition causes poor real.
A kind of incline monitoring system for electric transmission line pole of Publication No. 103487026A disclosure of the invention, the system bag
Include：The electric power line pole tower is arranged at, gathers the inclination angle monitor of the angle of inclination information of electric power line pole tower；With it is described
Inclination angle monitor is connected, and sends the wireless transport module of the angle of inclination information of the inclination angle monitor collection；Receive institute
The angle of inclination information of wireless transport module transmission is stated, and the angle of inclination information is uploaded to the circuit prison of host computer
Survey base station；The host computer, the host computer include the display unit for showing the angle of inclination information.But it is in shaft tower
There is no urgent overturning-preventing facility more than certain angle of inclination after inclination, in use or some inconvenient places.
A kind of overhead line structures overturning-preventing monitoring system of the disclosure of the invention of Application No. 201410689629.1, including bar
Tower, monitoring unit, power supply unit and centralized control center, said supply unit are powered to the monitoring unit, and the monitoring is single
Member includes monitoring modular, control module, shaft tower communication module, and the monitoring modular includes obliquity sensor and wind sensor,
The centralized control center includes ground communication module, industrial computer, display and alarm, the monitoring unit by satellite communication with
The centralized control center is connected, and anti-tipping apparatus is set on the shaft tower.Inclination of the present invention to overhead line structures serves well
Monitoring, information transfer is stable, energy remote detection to shaft tower angle of inclination and ambient wind size, monitors Realtime Alerts in real time, and
Certain overturning-preventing ability is carried, can be that the arrival of repair personnel is raced against time, reduce the probability for accident occur, also reduce
Loss caused by accident.The invention can prevent shaft tower from toppling over, but anti-tipping apparatus has certain danger.
The content of the invention
Problem to be solved by this invention is to provide a kind of fast reaction overturning-preventing shaft tower pedestal, the inclination to overhead line structures
Good monitoring is served, shaft tower inclination information can be sent to Surveillance center in time, realize fast reaction, and pass through pedestal
Particular design, carry certain overturning-preventing function, avoid shaft tower tilt effectively cause bigger electric power accident, be repair personnel
Arrival race against time.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of fast reaction overturning-preventing shaft tower pedestal, including base body, the interior cavity that cylinder is set of the base body, institute
State to set in cavity and tilt mechanism for monitoring, controlling organization and balance adjustment mechanism, the base body top sets fixed branch
Support mechanism, the fixed supporting mechanism include the pressure port that the base body top is uniformly arranged several outward openings, institute
State the drive mechanism that the movable push rod being engaged with its section and the driving movable push rod are set in pressure port, the control machine
Structure is connected with the inclination mechanism for monitoring, balance adjustment mechanism and fixed supporting mechanism electric signal respectively.
Further, the pressure port section is circle, and the pressure port is steel pipe product.
Further, the movable push rod includes agreeing with the cylindrical base of the pressure port internal diameter size and the cylinder
The fixation stock that shape pan frontward end is set.
Further, the fixed stock both sides set fixed plate.
Further, the drive mechanism includes the air bag that the pressure port inner end is set, and is set in the air bag folded
Sodium nitride, potassium nitrate and SiO 2 powder, igniter is also set up in the air bag.
Further, the igniter uses ignition, and the ignition passes through solid-state relay and control
Molding block connects with power module.
Further, the balance adjustment mechanism include the cavity edge according to circumference even angle arrange four
Bearing, adjusting screw is set on the bearing facing each other, the adjusting screw is corresponded in the cavity strut is set, it is described
Balancing weight is set on adjusting screw and corresponding strut, and the balancing weight setting is engaged interior with the adjusting screw
Screwed hole and the supported hole being engaged with the strut, the adjusting screw are connected with the regulation motor.
Further, the inclination mechanism for monitoring includes three-axis gyroscope and three axis accelerometer.
Further, the controlling organization includes single-chip microcomputer.
Further, communication module is also set up on the base body, the communication module is connected with controlling organization.
Further, the communication module uses GPRS module.
Further, the regulation motor uses servomotor.
The invention provides a kind of fast reaction overturning-preventing shaft tower pedestal, set in the cavity in base body and tilt monitoring
Mechanism can be monitored to whether shaft tower tilts, and by the way that monitoring information is sent to controlling organization to be judged, work as appearance
Start balance adjustment mechanism pair during inclination to carry out matching somebody with somebody recanalization because the basement tilt that shaft tower tilts and drives, avoid shaft tower from tilting
Spend causes power network to disconnect greatly, larger electric power accident occurs.Balance adjustment mechanism is by entering to the balancing weight position of inside
Row adjustment is so as to adjust the center of gravity of pedestal, can be to where most of inclined shaft tower so as to play mobile corrective action
Angle is maintained, and avoids the generation of more major break down.Fixed supporting mechanism when shaft tower tilts drive mechanism by pressure port
Movable push rod ejection, inserts in soil, increases the earth-grasping force of pedestal, prevent that shaft tower is inclined more serious.The alarm reaction machine
Structure can not just trigger in just embedment shaft tower pedestal, because movable push rod is headed into soil after overlong time, pass through multiple wind
Blow and drench with rain, gap can be increasing between movable push rod and soil, although can increase earth-grasping force to a certain extent, experience is big
Still easily topple over after wind number is more, and at this moment just avoid shaft tower from tilting without fixed supporting mechanism.
Inclination of the present invention to overhead line structures serves good monitoring, in time can send shaft tower inclination information to prison
Control center, fast reaction is realized, and by the particular design of pedestal, carry certain overturning-preventing function, avoid shaft tower from tilting tight
Bigger electric power accident is remake into, is raced against time for the arrival of repair personnel, reduces loss caused by accident.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of the movable push rod of the present invention；
Fig. 3 is the structural representation that the present invention organizes another drive mechanism；
Fig. 4 is the structural representation of balance adjustment mechanism of the present invention；
Fig. 5 is the structural representation of cavity of the present invention.
Embodiment
It is as follows to the further displaying of technical solution of the present invention, embodiment with reference to Fig. 1 to Fig. 5：
Embodiment one
As depicted in figs. 1 and 2：Present embodiments provide a kind of fast reaction overturning-preventing shaft tower pedestal, including base body 1, institute
The cavity 2 that cylinder is set in base body 1 is stated, is set in the cavity 2 and tilts mechanism for monitoring 3, controlling organization 4 and balance
Governor motion 28, the top of base body 1 set fixed supporting mechanism, and the fixed supporting mechanism includes the base body
1 top is uniformly arranged the pressure port 10 of several outward openings, and the activity being engaged with its section is set in the pressure port 10
Push rod 11 and the drive mechanism 12 for driving the movable push rod 11, the controlling organization 4 respectively with the inclination mechanism for monitoring 3,
Balance adjustment mechanism 28 connects with fixed supporting mechanism electric signal.
Inclination mechanism for monitoring is set to be monitored to whether shaft tower tilts in cavity in base body, by that will supervise
Measurement information is sent to controlling organization to be judged, when tilting start balance adjustment mechanism pair because shaft tower tilt and band
Dynamic basement tilt carries out matching somebody with somebody recanalization, avoids shaft tower gradient is excessive from causing power network to disconnect, larger electric power accident occurs.It is flat
Weighing apparatus governor motion is by being adjusted the balancing weight position of inside so as to adjust the center of gravity of pedestal, so as to play mobile tune
Whole effect, the angle where most of inclined shaft tower can be maintained, avoid the generation of more major break down.Fixed support machine
Structure drive mechanism when shaft tower tilts ejects the movable push rod in pressure port, inserts in soil, increases the earth-grasping force of pedestal, prevents
Only shaft tower is inclined more serious.The alarm reaction mechanism can not just trigger in just embedment shaft tower pedestal, because movable push rod
Head into soil after overlong time, by multiple wind and weather, gap can be increasing between movable push rod and soil, although
Can increase earth-grasping force to a certain extent, but undergo strong wind number it is more after still easily topple over, and at this moment just without fixed support
Mechanism avoids the shaft tower from tilting.
The section of pressure port 10 is circle, and the pressure port 10 is steel pipe product.The movable push rod 11 includes agreeing with
The fixation stock 15 that the cylindrical base 14 of the internal diameter size of pressure port 10 and the front end of the cylindrical base 14 are set.It is described
The fixed both sides of stock 15 set fixed plate 21.Pressure port uses circular cross-section, preferably with steel pipe product, ensures the light of its side wall
Slip and compression strength, there is crack in pressure port when avoiding strutting movable push rod, influences the ejection distance of movable push rod, so as to
The earth-grasping force of influence activity push rod.The structure of movable push rod includes base and fixed Chang'an, and base is the sealing for agreeing with pressure port
Base, such drive mechanism are promoted by driving base in fixed stock insertion soil, and fixed stock both sides set fixed plate,
Fixed plate is horizontally disposed, and earth-grasping force can be increased by inserting in soil, stablizes the shaft tower in tilting to a greater extent.
The drive mechanism 12 includes the air bag 20 that the inner end of pressure port 10 is set, and nitrine is set in the air bag 20
Change sodium, potassium nitrate and SiO 2 powder, igniter 18 is also set up in the air bag 20.Drive mechanism is by the way of chemistry
To carry out, the sodium azide, potassium nitrate and the SiO 2 powder that are set in air bag, sodium azide divides rapidly in the case of heated
Solution, burning produce the mixture of molten metal sodium and nitrogen, and then, metallic sodium and nitric acid nak response discharge more nitrogen
Gas simultaneously forms potassium oxide and sodium oxide molybdena.These oxides can be combined with silica immediately, form harmless water soda glass, and
Caused a large amount of nitrogen will eject the movable stock set in pressure port rapidly during this.
The igniter 18 uses ignition, and the ignition passes through solid-state relay 16 and control module
4 and power module 17 connect.Igniter plays a part of heating sodium azide, more preferable using the effect of ignition,
It is swift in response, the temperature that ignition triggers when lighting a fire is very high, it is sufficient to ensure that sodium azide is smoothly lighted and start to react.Control
Molding block controls the switch of ignition by solid-state relay, and power module is by the switch of solid-state relay to electronics
Igniter is powered.
Embodiment two
As shown in Figure 3：The difference of itself and embodiment one is：
The drive mechanism 12 includes the air pump 19, the connection air pump 19 and above the ground air set on base body 1
The pressure pipeline 24 of admission line 25 and the connection air pump 19 and the pressure port 10.This is the realization of another drive mechanism
Mode, drive mechanism are driven by the way of pneumatic, and air pump compresses the air suction in the external world into pressure port, promotes base
Drive in fixed stock insertion soil, pressure pipeline bears larger pressure, it is preferred to use steel pipe, avoid the gas after air pump pressurization
Body leaks.
The admission line 25 enters mouth down, and the top of admission line 25 sets the rain shade 27 of umbrella shape, it is described enter
The entrance of feed channel 25 sets filter screen 26.Entering the rain shade of mouth down and setting prevents rainwater enters in admission line from being made to air pump
Into influence, the filter screen of setting can filter the dust and other impurities in field, and avoiding being blocked during air pump air-breathing causes the accident.
Embodiment three
As shown in Figure 4 and Figure 5：The difference of itself and embodiment one is：
The balance adjustment mechanism 28 includes four bearings 8 that the edge of cavity 2 arranges according to the even angle of circumference, described
Adjusting screw 5 is set on bearing 8 facing each other, the adjusting screw 5 is corresponded in the cavity 2 strut 6, the regulation is set
Balancing weight 7 is set on leading screw 5 and corresponding strut 6, and the balancing weight 7 sets what is be engaged with the adjusting screw 5
Internal thread hole 22 and the supported hole 23 being engaged with the strut 6, the adjusting screw 5 connect with the regulation motor 13 transmission
Connect.Two relative two-by-two and relative bearings of four bearings not in same level, are set with two other on relative bearing
Put adjusting screw and adjusting screw corresponded in cavity and the strut being engaged is set, balancing weight is set on strut and adjusting screw,
Driving adjusting screw, which carries out rotating weight block, to be moved on adjusting screw, the throwing of two adjusting screws in the horizontal plane
Shadow intersects vertically, so can be with the position of self-balanced upper rotary, by being mutually perpendicular to by the rotation of two adjusting screws
Two axially engage, realize adjustment of the balancing weight to base body center of gravity.
The inclination mechanism for monitoring 3 includes three-axis gyroscope and three axis accelerometer.Three axis accelerometer being capable of monitoring rod
The inclined speed of tower, three-axis gyroscope can monitor inclined direction, and both can be realized to shaft tower incline direction in mutual cooperation
With the monitoring of speed, the action of balance adjustment mechanism can be preferably controlled by monitoring information so that the security of shaft tower is more
It is high.
The controlling organization 4 includes single-chip microcomputer.Single-chip microcomputer is a kind of IC chip, is to use ultra-large integrated electricity
Road technique is the central processor CPU with data-handling capacity, random access memory ram, read only memory ROM, a variety of I/O mouths
With the system of interruption, the function such as timer/counter（Display driver circuit, pulse-width modulation circuit, Multipexer may also be included to turn
The circuits such as parallel operation, A/D converter）The small and perfect microcomputer system formed on one piece of silicon chip is integrated into, can be with
Realize to the inclined Analysis on monitoring data of shaft tower and control balance adjustment mechanism to be controlled.
Communication module 9 is also set up on the base body 1, the communication module 9 is connected with controlling organization 4.Communication module
The inclination conditions of shaft tower can be sent in time with long-range control centre's telecommunication, meeting with strong wind in shaft tower tilts
When shaft tower is supported by balance adjustment mechanism, then remote notification staff excludes maintenance group and come to the spot in time
Exclusion accident, reaction are rapider.
The communication module 9 uses GPRS module, and GPRS module can realize wireless telecommunication, and the scope of communication is very
Far, and signal stabilization, beneficial to the even running of whole monitoring system.
The regulation motor 13 uses servomotor.Servomotor can make control speed, and positional precision is very accurate, can be with
Voltage signal is converted into torque and rotating speed with drive control object.Servo motor rotor rotating speed is controlled by input signal, and energy
Fast reaction, in automatic control system, as executive component, and with electromechanical time constant is small, the linearity is high, pickup voltage
Etc. characteristic, the angular displacement that the electric signal received can be converted on motor reel or angular speed output.So for balancing weight
More accurate in the change control of empty intracavitary locations, the regulation for center of gravity is more preferable, more conducively the stabilization of shaft tower.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, this area is common
Other modifications or equivalent substitution that technical staff is made to technical scheme, without departing from technical solution of the present invention
Spirit and scope, all should cover among scope of the presently claimed invention.
Claims (10)
- A kind of 1. fast reaction overturning-preventing shaft tower pedestal, it is characterised in that：Including base body, circle is set in the base body The cavity of cylindricality, interior set of the cavity tilts mechanism for monitoring, controlling organization and balance adjustment mechanism, on the base body Portion sets fixed supporting mechanism, and the fixed supporting mechanism is uniformly arranged several outward openings including the base body top Pressure port, the movable push rod being engaged with its section and the driving machine for driving the movable push rod are set in the pressure port Structure, the controlling organization are connected with the inclination mechanism for monitoring, balance adjustment mechanism and fixed supporting mechanism electric signal respectively.
- 2. fast reaction overturning-preventing shaft tower pedestal as claimed in claim 1, it is characterised in that：The pressure port section is circle Shape, the pressure port are steel pipe product.
- 3. fast reaction overturning-preventing shaft tower pedestal as claimed in claim 2, it is characterised in that：The movable push rod includes agreeing with The fixation stock that the cylindrical base of the pressure port internal diameter size and the cylindrical base front end are set.
- 4. fast reaction overturning-preventing shaft tower pedestal as claimed in claim 3, it is characterised in that：The fixed stock both sides are set Fixed plate.
- 5. fast reaction overturning-preventing shaft tower pedestal as claimed in claim 1, it is characterised in that：The drive mechanism includes described The air bag that pressure port inner end is set, sets sodium azide, potassium nitrate and SiO 2 powder in the air bag, in the air bag Also set up igniter.
- 6. fast reaction overturning-preventing shaft tower pedestal as claimed in claim 5, it is characterised in that：The igniter uses electronics Igniter, the ignition are connected by solid-state relay with control module and power module.
- 7. fast reaction overturning-preventing shaft tower pedestal as claimed in claim 1, it is characterised in that：The balance adjustment mechanism includes Four bearings that the cavity edge arranges according to the even angle of circumference, regulation silk is set on the bearing facing each other Thick stick, the adjusting screw is corresponded in the cavity strut is set, set and match somebody with somebody on the adjusting screw and corresponding strut Pouring weight, the balancing weight set the internal thread hole being engaged with the adjusting screw and the supported hole being engaged with the strut, The adjusting screw is connected with the regulation motor.
- 8. fast reaction overturning-preventing shaft tower pedestal as claimed in claim 7, it is characterised in that：The inclination mechanism for monitoring includes Three-axis gyroscope and three axis accelerometer.
- 9. fast reaction overturning-preventing shaft tower pedestal as claimed in claim 1, it is characterised in that：The controlling organization includes monolithic Machine.
- 10. fast reaction overturning-preventing shaft tower pedestal as claimed in claim 1, it is characterised in that：Also set on the base body Communication module is put, the communication module is connected with controlling organization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611017240.8A CN107386768B (en) | 2016-11-19 | 2016-11-19 | A kind of fast reaction overturning-preventing shaft tower pedestal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611017240.8A CN107386768B (en) | 2016-11-19 | 2016-11-19 | A kind of fast reaction overturning-preventing shaft tower pedestal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107386768A true CN107386768A (en) | 2017-11-24 |
| CN107386768B CN107386768B (en) | 2019-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611017240.8A Active CN107386768B (en) | 2016-11-19 | 2016-11-19 | A kind of fast reaction overturning-preventing shaft tower pedestal |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678523A (en) * | 2018-05-08 | 2018-10-19 | 合肥海银杆塔有限公司 | It is a kind of to carry the cement shaft tower for toppling over support |
| CN110284751A (en) * | 2019-07-02 | 2019-09-27 | 合肥海银杆塔有限公司 | A kind of concrete electric pole overturning-preventing pedestal |
| CN112249489A (en) * | 2020-10-12 | 2021-01-22 | 林美娟 | Anti-toppling device for chemical transport machine |
| CN113252006A (en) * | 2021-05-10 | 2021-08-13 | 福建泰坤电子有限公司 | Monitoring device based on communication base station tower |
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| JP2016061022A (en) * | 2014-09-16 | 2016-04-25 | 株式会社ダイクレ | Structure for preventing urination by animals at root of column |
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| DE29919447U1 (en) * | 1999-11-05 | 2000-01-05 | Baumann Verwertungsgesellschaft Gmbh, 88471 Laupheim | Ground anchors, especially for the building industry |
| CN101487355A (en) * | 2009-02-23 | 2009-07-22 | 廖力锋 | Telegraph pole and its mounting and fixing method |
| CN203394145U (en) * | 2013-07-23 | 2014-01-15 | 国家电网公司 | Overturn-preventing mushroom disk shaped pole device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678523A (en) * | 2018-05-08 | 2018-10-19 | 合肥海银杆塔有限公司 | It is a kind of to carry the cement shaft tower for toppling over support |
| CN110284751A (en) * | 2019-07-02 | 2019-09-27 | 合肥海银杆塔有限公司 | A kind of concrete electric pole overturning-preventing pedestal |
| CN112249489A (en) * | 2020-10-12 | 2021-01-22 | 林美娟 | Anti-toppling device for chemical transport machine |
| CN113252006A (en) * | 2021-05-10 | 2021-08-13 | 福建泰坤电子有限公司 | Monitoring device based on communication base station tower |
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| Publication number | Publication date |
|---|---|
| CN107386768B (en) | 2019-04-26 |
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