CN106730476A - A kind of magnetic fall protection equipment and its magnetic field control method - Google Patents

A kind of magnetic fall protection equipment and its magnetic field control method Download PDF

Info

Publication number
CN106730476A
CN106730476A CN201611223803.9A CN201611223803A CN106730476A CN 106730476 A CN106730476 A CN 106730476A CN 201611223803 A CN201611223803 A CN 201611223803A CN 106730476 A CN106730476 A CN 106730476A
Authority
CN
China
Prior art keywords
magnetic field
shaft tower
magnetic
contact
control unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611223803.9A
Other languages
Chinese (zh)
Inventor
张师赫
宋传军
缪立洪
沈斌
孙德刚
杨飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Maintenance Branch of State Grid Jiangsu Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Maintenance Branch of State Grid Jiangsu Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Maintenance Branch of State Grid Jiangsu Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201611223803.9A priority Critical patent/CN106730476A/en
Publication of CN106730476A publication Critical patent/CN106730476A/en
Pending legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B35/00Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
    • A62B35/0006Harnesses; Accessories therefor
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B35/00Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
    • A62B35/0006Harnesses; Accessories therefor
    • A62B35/0025Details and accessories

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

The present invention discloses a kind of magnetic fall protection equipment and its magnetic field control method, and device includes the safe band body of back belt type, power subsystem, and control unit, field generating unit and the contact condition collecting unit of working power are provided by power subsystem;Field generating unit include at least 4 groups correspond to both hands and 4 magnetic field generators at position of both feet respectively and magnetic field generator can be fixed on gloves or boots in fixed mechanism;Contact condition collecting unit is correspondingly arranged in both hands and double-legged 4 position sensors at position respectively including at least 4;Each position sensor gathers the contact condition information between corresponding position and shaft tower respectively, and the information transfer that will be collected is to control unit;Control unit produces the magnetic field for adsorbing shaft tower according to the contact condition information for receiving, control magnetic field generator, or stops producing magnetic field.The present invention can contact condition between trick and shaft tower during real-time monitoring staff climbing, and then by magnetic absorption control, prevent the generation of falling accident.

Description

A kind of magnetic fall protection equipment and its magnetic field control method
Technical field
The present invention relates to transmission line construction safeguard technical field, particularly a kind of magnetic in pole tower operation Fall protection equipment and its magnetic field control method.
Background technology
In Research Work of Power Transmission Line, it is often necessary to which maintainer climbs up iron tower operation, it is contemplated that the reason such as cost, it is difficult to accomplish Anti-fall guide rail is installed in every base shaft tower, this means that staff during Deng Ta, there is no the guarantor of safety protective tools Shield, once there is the fracture of pin nail or foot position situations such as there is deviation, it is more likely that there is personnel's falling accident.
The content of the invention
The purpose of the present invention is:The magnetic fall arrest protection dress of body-worn when a kind of confession maintainer climbing shaft tower is provided Put and its magnetic field control method, can contact condition between trick and shaft tower during real-time monitoring staff climbing, and then By magnetic absorption control, the generation of falling accident is prevented.
The technical scheme that the present invention takes is specially:A kind of magnetic fall protection equipment, including back belt type safety belt sheet Body, power subsystem, and control unit, field generating unit and the contact condition collection list of working power are provided by power subsystem Unit;
Power subsystem and control unit are fixed on safe band body;
Field generating unit includes that at least 4 groups correspond to 4 magnetic field generators at position of both hands and both feet and can send out magnetic field respectively The fixed mechanism that raw device is fixed in gloves or boots;Magnetic field generator and fixed mechanism are connected safe band body;Magnetic field occurs The control end connection control unit of device;
Contact condition collecting unit is correspondingly arranged in both hands and double-legged 4 position sensors at position respectively including at least 4, respectively The signal output part connection control unit of position sensor;
Each position sensor gathers the contact condition information between corresponding position and shaft tower, and the information transfer that will be collected respectively To control unit;Control unit is produced for adsorbing shaft tower according to the contact condition information for receiving, control magnetic field generator Magnetic field, or stop producing magnetic field.
In the present invention, control unit can be using microcontroller such as single-chip microcomputer etc..Magnetic field generator can using it is existing can The miniature or small-sized magnetic field generator product of high-intensity magnetic field is produced, control unit is passed through the size of current of magnetic field generator by control Control the size in magnetic field, it is ensured that can be adsorbed in staff on shaft tower when occurring by magnetic field.In use, staff first will With apparatus of the present invention are worn on, then climb shaft tower.During staff's climbing shaft tower, contact condition collecting unit Each position sensor can induce the contact condition between the trick position of staff and shaft tower, and control unit can be according to each portion The contact condition of position judges work at present personnel with the presence or absence of falling risk, and is produced for adsorbing by controlling magnetic field generator The magnetic field of shaft tower so that staff can be adsorbed on shaft tower by related, it is to avoid falling risk.
Preferably, in the present invention, position sensor is installed in gloves or boots, the position of correspondence palm or sole.It is excellent Choosing, in the present invention, the position sensor is pressure sensor.In climbing, if palm sole touches shaft tower, position Sensor can sense pressure, and whether control unit can sense that pressure judges whether staff has according to each sensor Falling risk.
Preferably, the position sensor uses proximity metal sensor.Because shaft tower is usually metal material, approach Formula metal sensor is existing product, and it has particular application as prior art.Additionally, position sensor can also use supersonic sensing Device etc..
Preferably, in the present invention, each group magnetic field generator and fixed mechanism at both hands and double-legged position are respectively by connection The connected safe band body of band, connect band is processed with safe band body using same material.I.e. connect band is of safety belt Point, it is integrated with seat belt body in processing to process, the pulling force of high intensity can be born in moment of falling.
Preferably, in the present invention, for being additionally provided with ancon fixed mechanism in the connect band for connecting hand field generating unit; For being additionally provided with knee fixed mechanism in the connect band for connecting foot's field generating unit.May be such that safety belt can be to work people Member plays comprehensive protection of multi-faceted multiple spot, while climbing for staff will not be had influence on because the active segment of connect band is oversize Creep work.
Invention additionally discloses a kind of magnetic field control method based on above-mentioned magnetic fall protection equipment, including step:
It is four contact points that S1 defines four positions of both hands both feet, and position sensor detects four between contact point and shaft tower Contact condition, and by contact condition information transfer to control unit;
S2 control units receive four contact condition information of contact point, judge in current four contact points, are in contact with shaft tower Contact point number:
If number is 4, control power subsystem is not powered to magnetic field generator
If number is 3, control power subsystem is passed through electricity to the magnetic field generator in 3 points positioned at two diagonal contact points Stream so that two contact points on this is diagonal produce magnetic field, with related corresponding hand and foot's absorption shaft tower;
If number is 2, control power subsystem is passed through electricity to the magnetic field generator on two contact points currently being contacted with shaft tower Stream so that magnetic field generator produces magnetic field, with the corresponding hand of related contact point or foot's absorption shaft tower.
The present invention in use, when during staff climbs in one it is diagonal on hand and foot leave simultaneously Shaft tower, then position sensor also detect 2 points contact states, be also now the presence of falling risk, control unit control two Lead to high current on individual contact point so that two contact points adsorb shaft tower.When the hand and foot that leave shaft tower regain one's grip on shaft tower When, then position sensor detects 4 states of contact point contact again, and now magnetic field disappears, and staff can arbitrarily control Trick continues to climb work.And work as position sensor and detect and be not in contact with a little being contacted with shaft tower, or only one of which contact point During contact, the absorption of a point cannot realize the purpose for avoiding falling, while in order to avoid the collision produced by magnetic force is endangered Danger, then do not produce magnetic field, can now utilize the real-time falling guard of other safeguard measures, such as insures rope.
Further, in the present invention, in four contact points, when there is 3 contact points to be contacted with shaft tower, magnetic field generator leads to The electric current for entering is denoted as A1;When there is 2 contact points to be contacted with shaft tower, the electric current that magnetic field generator is passed through is denoted as A2;Electric current A1 is small In electric current A2.I.e. two-point contact when falling risk be more than three point contact when falling risk, magnetic during corresponding two-point contact Attached power also compared with three point contact when it is bigger.Preferably, electric current A2 is the twice of electric current A1.This set can also bigizationner subtract Few influence of the magnetic adsorbability to staff's climbing motion.
Beneficial effect
Apparatus of the present invention simple structure and more light, is easy to wearing, it is easy to popularize.And work is had substantially no effect in application process The climbing action of personnel, while contact condition that can be between real-time detection climbing personnel's trick and shaft tower, so that as needed The magnetic field generator at control trick position produces magnetic field absorption affinity so that corresponding site is mutually adsorbed with shaft tower, so as to reduce fall Danger, improves operating efficiency and security, can effectively protect the life security for stepping on tower personnel.
Brief description of the drawings
Fig. 1 show apparatus of the present invention structure application schematic diagram;
Fig. 2 show apparatus of the present invention theory structure schematic diagram;
Fig. 3 show magnetic field control method schematic flow sheet of the present invention.
Specific embodiment
Further described below in conjunction with the drawings and specific embodiments.
With reference to Fig. 1 and Fig. 2, magnetic fall protection equipment of the invention, including the safe band body 1 of back belt type, power supply list Unit, and control unit, field generating unit 4 and the contact condition collecting unit of working power are provided by power subsystem;
Power subsystem and control unit are fixed on safe band body 1;Field generating unit includes that at least 4 groups correspond to both hands respectively With 4 magnetic field generators at position of both feet and the fixed mechanism in magnetic field generator being fixed on into gloves or boots;Send out in magnetic field Raw device and fixed mechanism are connected safe band body;The control end connection control unit of magnetic field generator;
Contact condition collecting unit is correspondingly arranged in both hands and double-legged 4 position sensors at position respectively including at least 4, respectively The signal output part connection control unit of position sensor;
Each position sensor gathers the contact condition information between corresponding position and shaft tower, and the information transfer that will be collected respectively To control unit;Control unit is produced for adsorbing shaft tower according to the contact condition information for receiving, control magnetic field generator Magnetic field, or stop producing magnetic field.
In the present invention, control unit can be using microcontroller such as single-chip microcomputer etc..Magnetic field generator can using it is existing can The miniature or small-sized magnetic field generator product of high-intensity magnetic field is produced, control unit is passed through the size of current of magnetic field generator by control Control the size in magnetic field, it is ensured that can be adsorbed in staff on shaft tower when occurring by magnetic field.In use, staff first will With apparatus of the present invention are worn on, then climb shaft tower.During staff's climbing shaft tower, contact condition collecting unit Each position sensor can induce the contact condition between the trick position of staff and shaft tower, and control unit can be according to each portion The contact condition of position judges work at present personnel with the presence or absence of falling risk, and is produced for adsorbing by controlling magnetic field generator The magnetic field of shaft tower so that staff can be adsorbed on shaft tower by related, it is to avoid falling risk.
Embodiment
As shown in fig. 1, power subsystem and control unit are integrated in one, and can insert same housing 3, and by housing 3 It is attached to fixed on safe band body 1.
Back belt type safety belt is existing product, plays fixed and carrying effect, is separated with human body after can preventing stress, and For power subsystem and control unit provide attachment platform.Power subsystem can use battery pack.
In the present embodiment, position sensor uses pressure sensor, is installed in gloves or boots, correspondence palm or sole Position.In climbing, if palm sole touches shaft tower, position sensor can sense pressure, and control unit can root Whether can sense that pressure judges whether staff has falling risk according to each sensor.Position sensor can also use proximity Metal sensor.Because shaft tower is usually metal material, pressure sensor and proximity metal sensor are all existing product, its Have particular application as prior art.Additionally, position sensor also can be using ultrasonic sensor etc..
Such as Fig. 1, each group magnetic field generator at both hands and both feet position and fixed machine 4 are connected safe by connect band 2 respectively Band body 1, connect band 2 is processed with safe band body 1 using same material.I.e. connect band 2 is a part for safety belt 1, It is integrated with seat belt body during processing to process, the pulling force of high intensity can be born in moment of falling.
Such as Fig. 1, for being additionally provided with ancon fixed mechanism 21 in the connect band 2 for connecting hand field generating unit;For even Knee fixed mechanism 22 is additionally provided with the connect band 2 of pin portion field generating unit.May be such that safety belt can be to staff Comprehensive protection of multi-faceted multiple spot is played, while the climbing of staff will not be had influence on because the active segment of connect band is oversize Action.
Invention additionally discloses a kind of magnetic field control method based on above-mentioned magnetic fall protection equipment, including step:
It is four contact points that S1 defines four positions of both hands both feet, and position sensor detects four between contact point and shaft tower Contact condition, and by contact condition information transfer to control unit;
S2 control units receive four contact condition information of contact point, judge in current four contact points, are in contact with shaft tower Contact point number:
If number is 4, control power subsystem is not powered to magnetic field generator
If number is 3, control power subsystem is passed through electricity to the magnetic field generator in 3 points positioned at two diagonal contact points Stream so that two contact points on this is diagonal produce magnetic field, with related corresponding hand and foot's absorption shaft tower;
If number is 2, control power subsystem is passed through electricity to the magnetic field generator on two contact points currently being contacted with shaft tower Stream so that magnetic field generator produces magnetic field, with the corresponding hand of related contact point or foot's absorption shaft tower.
The present invention in use, when during staff climbs in one it is diagonal on hand and foot leave simultaneously Shaft tower, then position sensor also detect 2 points contact states, be also now the presence of falling risk, control unit control two Lead to high current on individual contact point so that two contact points adsorb shaft tower.When the hand and foot that leave shaft tower regain one's grip on shaft tower When, then position sensor detects 4 states of contact point contact again, and now magnetic field disappears, and staff can arbitrarily control Trick continues to climb work.And work as position sensor and detect and be not in contact with a little being contacted with shaft tower, or only one of which contact point During contact, the absorption of a point cannot realize the purpose for avoiding falling, while in order to avoid the collision produced by magnetic force is endangered Danger, then do not produce magnetic field, can now utilize the real-time falling guard of other safeguard measures, such as insures rope.
Embodiment
In the present embodiment, in four contact points, when there is 3 contact points to be contacted with shaft tower, the electricity that magnetic field generator is passed through Stream is denoted as A1;When there is 2 contact points to be contacted with shaft tower, the electric current that magnetic field generator is passed through is denoted as A2;Electric current A1 is less than electric current A2.I.e. two-point contact when falling risk be more than three point contact when falling risk, magnetic adsorbability during corresponding two-point contact It is bigger during compared with three point contact.Preferably, electric current A2 is the twice of electric current A1.This set can also bigizationner reduction magnetic Influence of the attached power to staff's climbing motion.
That is, when 4 contact points are contacted with shaft tower, magnetic field generator does not work;When 3 contact points are contacted with shaft tower When, field generator for magnetic work now in 3 contact points, positioned at 2 diagonal contact point galvanizations, produces moderate strength magnetic , while anti-malfunction can be played a part of;When 2 contact points are contacted with shaft tower, control unit control magnetic field generator Very strong magnetic field is produced, 2 contact points is fixed on shaft tower, it is to avoid fall.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, on the premise of the technology of the present invention principle is not departed from, some improvement and deformation can also be made, these improve and deform Also should be regarded as protection scope of the present invention.

Claims (9)

1. a kind of magnetic fall protection equipment, it is characterized in that, including the safe band body of back belt type, power subsystem, and by electricity Source unit provides control unit, field generating unit and the contact condition collecting unit of working power;
Power subsystem and control unit are fixed on safe band body;
Field generating unit includes that at least 4 groups correspond to 4 magnetic field generators at position of both hands and both feet and can send out magnetic field respectively The fixed mechanism that raw device is fixed in gloves or boots;Magnetic field generator and fixed mechanism are connected safe band body;Magnetic field occurs The control end connection control unit of device;
Contact condition collecting unit is correspondingly arranged in both hands and double-legged 4 position sensors at position respectively including at least 4, respectively The signal output part connection control unit of position sensor;
Each position sensor gathers the contact condition information between corresponding position and shaft tower, and the information transfer that will be collected respectively To control unit;Control unit is produced for adsorbing shaft tower according to the contact condition information for receiving, control magnetic field generator Magnetic field, or stop producing magnetic field.
2. magnetic fall protection equipment according to claim 1, it is characterized in that, position sensor is installed on gloves or boots In sub, the position of correspondence palm or sole.
3. magnetic fall protection equipment according to claim 2, it is characterized in that, the position sensor is pressure sensing Device.
4. magnetic fall protection equipment according to claim 2, it is characterized in that, the position sensor uses proximity Metal sensor.
5. magnetic fall protection equipment according to claim 1, it is characterized in that, each group magnetic field at both hands and double-legged position Generator and fixed mechanism are connected safe band body by connect band respectively, and connect band is processed with safe band body using same material Form.
6. magnetic fall protection equipment according to claim 1, it is characterized in that, for connecting hand field generating unit Connect band on be additionally provided with ancon fixed mechanism;Fixed for being additionally provided with knee in the connect band for connecting foot's field generating unit Mechanism.
7. the magnetic field control method of the magnetic fall protection equipment being based on described in claim 1 to 6, it is characterized in that, including step Suddenly:
It is four contact points that S1 defines four positions of both hands both feet, and position sensor detects four between contact point and shaft tower Contact condition, and by contact condition information transfer to control unit;
S2 control units receive four contact condition information of contact point, judge in current four contact points, are in contact with shaft tower Contact point number:
If number is 4, control power subsystem is not powered to magnetic field generator
If number is 3, control power subsystem is passed through electricity to the magnetic field generator in 3 points positioned at two diagonal contact points Stream so that two contact points on this is diagonal produce magnetic field, with related corresponding hand and foot's absorption shaft tower;
If number is 2, control power subsystem is passed through electricity to the magnetic field generator on two contact points currently being contacted with shaft tower Stream so that magnetic field generator produces magnetic field, with the corresponding hand of related contact point or foot's absorption shaft tower.
8. method according to claim 7, it is characterized in that, in four contact points, contacted with shaft tower when there are 3 contact points When, the electric current that magnetic field generator is passed through is denoted as A1;When there is 2 contact points to be contacted with shaft tower, the electric current that magnetic field generator is passed through It is denoted as A2;Electric current A1 is less than electric current A2.
9. method according to claim 8, it is characterized in that, electric current A2 is the twice of electric current A1.
CN201611223803.9A 2016-12-27 2016-12-27 A kind of magnetic fall protection equipment and its magnetic field control method Pending CN106730476A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611223803.9A CN106730476A (en) 2016-12-27 2016-12-27 A kind of magnetic fall protection equipment and its magnetic field control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611223803.9A CN106730476A (en) 2016-12-27 2016-12-27 A kind of magnetic fall protection equipment and its magnetic field control method

Publications (1)

Publication Number Publication Date
CN106730476A true CN106730476A (en) 2017-05-31

Family

ID=58926502

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611223803.9A Pending CN106730476A (en) 2016-12-27 2016-12-27 A kind of magnetic fall protection equipment and its magnetic field control method

Country Status (1)

Country Link
CN (1) CN106730476A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110876501A (en) * 2019-11-26 2020-03-13 东北电力大学 Transmission line tower climbing operation electromagnetism safety system
CN115346337A (en) * 2022-08-23 2022-11-15 云南电网有限责任公司电力科学研究院 Method for preventing worker from falling, controller, safety belt and storage medium

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103007459A (en) * 2012-12-04 2013-04-03 马大勇 Overhead working anti-falling device
CN103082516A (en) * 2011-11-04 2013-05-08 河南省电力公司安阳供电公司 Climbing operation working unit
JP2014206944A (en) * 2013-04-16 2014-10-30 株式会社日立製作所 Safety check system
KR20140128112A (en) * 2013-04-26 2014-11-05 삼성중공업 주식회사 magnetic supporting ladder
KR101465783B1 (en) * 2013-09-26 2014-11-26 삼성중공업 주식회사 Apparatus for alarming danger
CN206350874U (en) * 2016-12-27 2017-07-25 国网江苏省电力公司检修分公司 A kind of magnetic fall protection equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103082516A (en) * 2011-11-04 2013-05-08 河南省电力公司安阳供电公司 Climbing operation working unit
CN103007459A (en) * 2012-12-04 2013-04-03 马大勇 Overhead working anti-falling device
JP2014206944A (en) * 2013-04-16 2014-10-30 株式会社日立製作所 Safety check system
KR20140128112A (en) * 2013-04-26 2014-11-05 삼성중공업 주식회사 magnetic supporting ladder
KR101465783B1 (en) * 2013-09-26 2014-11-26 삼성중공업 주식회사 Apparatus for alarming danger
CN206350874U (en) * 2016-12-27 2017-07-25 国网江苏省电力公司检修分公司 A kind of magnetic fall protection equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110876501A (en) * 2019-11-26 2020-03-13 东北电力大学 Transmission line tower climbing operation electromagnetism safety system
CN110876501B (en) * 2019-11-26 2021-08-10 东北电力大学 Transmission line tower climbing operation electromagnetism safety system
CN115346337A (en) * 2022-08-23 2022-11-15 云南电网有限责任公司电力科学研究院 Method for preventing worker from falling, controller, safety belt and storage medium
CN115346337B (en) * 2022-08-23 2023-07-21 云南电网有限责任公司电力科学研究院 Method for preventing operator from falling, controller, safety belt and storage medium

Similar Documents

Publication Publication Date Title
CN206350874U (en) A kind of magnetic fall protection equipment
CN203154230U (en) Electric weight-reduction training frame
CN106730476A (en) A kind of magnetic fall protection equipment and its magnetic field control method
CN106580285A (en) Intelligent anti-falling waistcoat with monitoring function
CN106923396A (en) Work high above the ground anti-dropping clothes
CN202890544U (en) High strength full covering type exoskeleton system
CN106075811B (en) A kind of rehabilitation walking machine
CN107028271A (en) The anti-safety cap violating the regulations of one kind
CN107909770A (en) A kind of nearly electricity voice alarm bracelet and method
CN202666223U (en) Disposable smoke-proof mask
CN206596709U (en) A kind of multifunctional building safety cap
CN109403851A (en) The association control method of ladder rung and guide rail brake apparatus
CN204697380U (en) A kind of industrial X-ray machine based on distance protection equipment
CN205872154U (en) Intelligence walking perambulator
CN201915818U (en) Anti-falling climb assister for vertical ladder
CN208710863U (en) A kind of power transmission line steel pipe rod operation falling prevention device
CN207355553U (en) A kind of dust-proof alarm security helmet of underground job buffer-type
CN203017686U (en) Auxiliary equipment for rope climbing exercise
CN206120983U (en) Shaft tower anti -falling device that ascends a height
CN107308566A (en) A kind of human body protection device
CN216562127U (en) Temperature safety experience device
CN205923064U (en) Utensil is assisted to safety helmet
CN206260927U (en) A kind of safety cap for underground construction
CN211462011U (en) Ski machine safety protection system
CN205391492U (en) Tunnel construction high altitude safety belt

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information

Address after: 211102, Jiangsu, Jiangning Development Zone, Nanjing, the source of the road, No. 58, -5

Applicant after: STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. MAINTENANCE BRANCH

Applicant after: State Grid Corporation of China

Address before: 211102, Jiangsu, Jiangning Development Zone, Nanjing, the source of the road, No. 58, -5

Applicant before: MAINTENANCE DIVISION OF STATE GRID JIANGSU ELECTRIC POWER Co.

Applicant before: State Grid Corporation of China

CB02 Change of applicant information
RJ01 Rejection of invention patent application after publication

Application publication date: 20170531

RJ01 Rejection of invention patent application after publication