CN111750030A - Anti-seismic device with electric pipeline self-closing function - Google Patents

Anti-seismic device with electric pipeline self-closing function Download PDF

Info

Publication number
CN111750030A
CN111750030A CN202010635287.0A CN202010635287A CN111750030A CN 111750030 A CN111750030 A CN 111750030A CN 202010635287 A CN202010635287 A CN 202010635287A CN 111750030 A CN111750030 A CN 111750030A
Authority
CN
China
Prior art keywords
seat
energy storage
spring
limiting
seismic
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.)
Withdrawn
Application number
CN202010635287.0A
Other languages
Chinese (zh)
Inventor
沈贵宁
卢旺
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.)
Bengbu Longhuai Construction Technology Co ltd
Original Assignee
Bengbu Longhuai Construction Technology 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 Bengbu Longhuai Construction Technology Co ltd filed Critical Bengbu Longhuai Construction Technology Co ltd
Priority to CN202010635287.0A priority Critical patent/CN111750030A/en
Publication of CN111750030A publication Critical patent/CN111750030A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
    • F16F15/067Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92Protection against other undesired influences or dangers
    • E04B1/98Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems

Abstract

The invention discloses an anti-seismic device with an automatic closing function of an electric pipeline, which comprises an anti-seismic body, wherein two ends of the anti-seismic body are respectively and fixedly connected with an upper concrete base and a lower concrete base, the bottom of a firing pin is movably contacted with a limiting claw, one side of a limiting seat, which is close to the firing pin, is fixedly provided with an energy storage spring, a spring seat is fixedly arranged in a reaction action chamber, a wheel shaft of a driving gear is also fixedly provided with a driving synchronous pulley, a driven synchronous pulley is fixedly arranged on a valve rod of a natural gas pipeline valve, and a switching gear is also arranged on the wheel shaft of the driving gear. Fully ensures the life and property safety of the people suffering from the disaster.

Description

Anti-seismic device with electric pipeline self-closing function
Technical Field
The invention relates to the technical field of building anti-seismic devices, in particular to an anti-seismic device with an automatic closing function of an electric pipeline.
Background
A high-rise building shock absorption structure with application number of CN201610478236.5 in the prior art and a construction method thereof belong to the field of building earthquake resistance, the device is a construction method of a high-rise building shock absorption structure, the constructed high-rise building shock absorption structure comprises a bottom base, a coarse sand isolation layer, a stone filling layer, a building foundation and a mouth-shaped earthquake-resistant wall, the bottom base is arranged in the stone filling layer, a coarse sand isolation layer is arranged on the upper surface of the bottom base, an opening-shaped anti-seismic wall and a building foundation are constructed on the basis of the coarse sand isolation layer, and the building foundation is positioned in the mouth-shaped earthquake-resistant wall, the periphery of the mouth-shaped earthquake-resistant wall is provided with a stone filling layer, a reverse impact energy-absorbing device is arranged between the building foundation and the mouth-shaped earthquake-resistant wall, the device isolates the building foundation from the bottom base, the bottom base has a certain degree of longitudinal and transverse movement space, and the anti-seismic effect is good.
But the shock absorption structure of the high-rise building still has obvious defects in the using process: when an earthquake occurs, secondary disasters caused by the earthquake often cause serious secondary damage to people suffering from the earthquake, and the safety of lives and properties of people suffering from the earthquake is directly affected when the secondary disasters cause the earthquake, so that the device has single function and cannot block electric and other hazardous facilities.
Disclosure of Invention
The present invention is directed to an anti-vibration device with an automatic closing function for an electrical conduit, which solves the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
an anti-seismic device with an automatic closing function of an electric pipeline comprises an anti-seismic body, wherein two ends of the anti-seismic body are fixedly connected with an upper concrete base and a lower concrete base respectively, the anti-seismic body comprises a fixed seat and a buffer seat, and the bottom of the buffer seat is provided with a firing pin;
the striker is movably inserted into a reaction action chamber formed in the lower concrete base, the bottom of the striker is in movable contact with a limiting claw, the limiting claw is movably inserted on a rotating shaft, one end of the limiting claw, which is far away from the striker, is in movable fit with a limiting seat, one side of the limiting seat, which is close to the striker, is fixedly provided with an energy storage spring, one end of the energy storage spring, which is far away from the limiting seat, is fixedly arranged on a spring seat, the spring seat is fixedly arranged in the reaction action chamber, one side of the limiting seat, which is close to the energy storage spring, is fixedly connected with a traction rope, the traction rope penetrates through the spring seat and is wound on an energy storage disc, an energy storage crank hole is formed in the axis of the energy storage disc, one end of the limiting seat, which is far away from the energy storage spring, is fixedly provided with an impact rack, the driven synchronous belt wheel is fixedly installed on a valve rod of the natural gas pipeline valve, a brake pulling gear is further installed on a wheel shaft of the driving gear, the brake pulling gear is meshed with the brake pulling rod, and the brake pulling rod is movably matched with the electric brake.
Preferably, the buffer seat includes shock pad and buffer disc, buffer disc bottom is provided with a plurality of damping spring along its axle center direction annular array, damping spring fixed mounting is in the fixing base, firing pin fixed mounting is in buffer disc bottom, fixing base bottom still fixed mounting has the mounting base.
Preferably, the shock pad is a layered structure formed by arranging steel plates and rubber pads at intervals.
Preferably, one side of the limiting claw, which is far away from the energy storage spring, is fixedly provided with an extrusion spring, and the bottom of the limiting claw is also fixedly provided with a stop lever.
Preferably, the impact rack and the brake pull rod are movably inserted in the limit sleeve.
Compared with the prior art, the invention has the beneficial effects that:
1. the shock absorption device can perform conventional shock absorption on a building, can perform good shock absorption on the transverse direction and the longitudinal direction through the arrangement of the shock absorption pad and the shock absorption spring, and prevents the building from being damaged or collapsed in an earthquake;
2. this application can utilize the vibration percussion energy storage spring release energy that the earthquake produced to block electric power facility and natural gas supply line, effectively prevent secondary disaster from taking place, fully ensured the security of the lives and property of the masses that suffer a disaster.
This application can carry out good horizontal and vertical shock attenuation, can utilize the vibration percussion energy storage spring release energy that the earthquake produced simultaneously to block electric power facility and natural gas supply line, prevent effectively preventing secondary disaster's when the building from damaging or collapsing in the earthquake emergence, fully ensured the lives and properties safety of the masses that suffer a disaster.
Drawings
FIG. 1 is a schematic view of the internal structure of a reaction chamber according to the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic view of a switching gear linkage structure according to the present invention;
FIG. 4 is a schematic view of the internal connection structure of the fixing base of the present invention.
In the figure: 1 antidetonation body, 2 concrete base, 3 concrete base down, 4 fixing bases, 5 cushion sockets, 6 firing pins, 7 reaction action rooms, 8 spacing claws, 9 spacing sockets, 10 energy storage springs, 11 spring seats, 12 haulage ropes, 13 energy storage discs, 14 energy storage crank holes, 15 striking racks, 16 driving gears, 17 driving synchronous pulleys, 18 synchronous belts, 19 driven synchronous pulleys, 20 natural gas pipeline valves, 21 brake pulling gears, 22 brake pulling rods, 23 electric brakes, 24 shock pads, 25 cushion discs, 26 shock absorption springs, 27 mounting bases, 28 extrusion springs, 29 shelves poles, 30 spacing sleeves.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution:
an anti-seismic device with an automatic closing function of an electric pipeline comprises an anti-seismic body 1, wherein two ends of the anti-seismic body 1 are fixedly connected with an upper concrete base 2 and a lower concrete base 3 respectively, the anti-seismic body 1 comprises a fixed seat 4 and a buffer seat 5, and the bottom of the buffer seat 5 is provided with a firing pin 6;
through elastic displacement between the buffer seat 5 and the fixed seat 4, rigid shaking generated by a building in an earthquake can be reduced, so that the building is effectively prevented from cracking and damage, and meanwhile, when the buffer seat 5 is greatly displaced relative to the fixed seat 4 and the building is possibly damaged or collapsed to a greater extent, the buffer seat 5 is displaced to drive the striker 6 to move downwards, so that the energy storage spring 10 at the bottom is triggered to act;
the firing pin 6 is movably inserted in a reaction action chamber 7 arranged on the lower concrete base 3, the bottom of the firing pin 6 is movably contacted with a limiting claw 8, the limiting claw 8 is movably inserted on a rotating shaft, one end of the limiting claw 8 far away from the firing pin 6 is movably matched with a limiting seat 9, one side of the limiting seat 9 close to the firing pin 6 is fixedly provided with an energy storage spring 10, one end of the energy storage spring 10 far away from the limiting seat 9 is fixedly arranged on a spring seat 11, the spring seat 11 is fixedly arranged in the reaction action chamber 7, one side of the limiting seat 9 close to the energy storage spring 10 is fixedly connected with a traction rope 12, the traction rope 12 passes through the spring seat 11 and is wound on an energy storage disc 13, an energy storage crank hole 14 is arranged at the axis of the energy storage disc 13, one end of the limiting seat 9 far away from the energy storage spring 10 is fixedly provided with an impact rack 15, the driving synchronous pulley 17 is connected with a driven synchronous pulley 19 through a synchronous belt 18, the driven synchronous pulley 19 is fixedly installed on a valve rod of a natural gas pipeline valve 20, a switching-off gear 21 is further installed on a wheel shaft of the driving gear 16, the switching-off gear 21 is meshed with a switching-off rod 22, and the switching-off rod 22 is movably matched with an electric switch 23.
In the earthquake-free environment, the external crank is matched with the crank hole 14, the energy storage disc 13 is driven to rotate by rotating the crank hole 14, so that the energy storage spring 10 is compressed to store energy, when the limiting seat 9 reaches a certain position and is matched with the limiting claw 8, the limiting claw 8 limits the reverse recovery of the limiting seat 9 at the moment, so that the energy storage of the energy storage spring 10 is completed, when the buffer seat 5 is greatly displaced relative to the fixed seat 4 and the building is possibly damaged or collapsed to a large extent, the bottom of the buffer seat 5 stretches out and draws back to drive the striker 6 to move downwards, the limiting seat 9 is separated by extruding the limiting claw 8 through the striker 6, the energy storage spring 10 releases elastic potential energy, the limiting seat 9 moves towards one end far away from the spring seat 11 along with the limiting seat 9, the limiting seat 9 moves to drive the impact rack 15 to move, the impact rack 15 moves to drive the driving gear 16 to rotate, and the, the driving synchronous belt wheel 17 rotates to drive the driven synchronous belt wheel 19 to rotate, and then the locking of a valve rod of the natural gas pipeline valve 20 is completed, so that the natural gas pipeline is closed, the driving gear 16 rotates to drive the brake pull gear 21 to rotate, the brake pull rod 22 is driven to move downwards through the rotation of the brake pull gear 21, and the switch 23 is pulled down through the brake pull rod 22, so that the power-off operation is performed.
Preferably, the buffer base 5 comprises a shock absorption pad 24 and a buffer disc 25, a plurality of shock absorption springs 26 are arranged at the bottom of the buffer disc 25 in an annular array along the axis direction of the buffer disc, the shock absorption springs 26 are fixedly installed in the fixed base 4, the firing pin 6 is fixedly installed at the bottom of the buffer disc 25, an installation base 27 is further fixedly installed at the bottom of the fixed base 4, the shock absorption springs 26 arranged in the annular array can provide large supporting force, so that enough supporting force of the building in a non-earthquake environment can be guaranteed, rigid vibration of the building can be relieved in the earthquake environment, and safety of the building can be guaranteed.
Preferably, the shock pad 24 is a layered structure formed by spacing a steel plate and a rubber pad, and can provide strong shock absorption performance through the spacing between the steel plate and the rubber pad, thereby effectively absorbing shock in the transverse direction and the longitudinal direction.
Preferably, the extrusion spring 28 is fixedly installed on one side, away from the energy storage spring 10, of the limiting claw 8, the stop lever 29 is further fixedly installed at the bottom of the limiting claw 8, downward extrusion force is provided for the limiting claw 8 through the extrusion spring 28, the limiting claw 8 is effectively prevented from falling off, and meanwhile, the stop lever 29 is arranged, so that the limiting claw 8 can be prevented from rotating excessively.
Preferably, the impact rack 15 and the brake pull rod 22 are movably inserted in the limiting sleeve 30, and the impact rack 15 and the brake pull rod 22 are limited by the limiting sleeve 30 and move in corresponding channels, so that the moving stability of the impact rack 15 and the brake pull rod 22 is ensured.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides an antidetonation device with electric pipeline self-closing function, includes antidetonation body (1), its characterized in that: the anti-seismic device comprises an anti-seismic body (1), wherein two ends of the anti-seismic body (1) are respectively and fixedly connected with an upper concrete base (2) and a lower concrete base (3), the anti-seismic body (1) comprises a fixed seat (4) and a buffer seat (5), and a firing pin (6) is arranged at the bottom of the buffer seat (5);
the energy-saving concrete base is characterized in that the firing pin (6) is movably inserted into a reaction action chamber (7) formed in the lower concrete base (3), the bottom of the firing pin (6) is in movable contact with a limiting claw (8), the limiting claw (8) is movably inserted into a rotating shaft, one end, far away from the firing pin (6), of the limiting claw (8) is movably matched with a limiting seat (9), an energy storage spring (10) is fixedly installed on one side, close to the firing pin (6), of the limiting seat (9), one end, far away from the limiting seat (9), of the energy storage spring (10) is fixedly installed on a spring seat (11), the spring seat (11) is fixedly installed in the reaction action chamber (7), one side, close to the energy storage spring (10), of the limiting seat (9) is fixedly connected with a traction rope (12), the traction rope (12) penetrates through the spring seat (11) and is wound on an energy storage disc (13), and an energy storage crank hole (14), spacing seat (9) are kept away from energy storage spring (10) one end fixed mounting and are had striking rack (15), striking rack (15) and driving gear (16) meshing, still fixed mounting has initiative synchronous pulley (17) on the shaft of driving gear (16), initiative synchronous pulley (17) are connected with driven synchronous pulley (19) through hold-in range (18), driven synchronous pulley (19) fixed mounting is on the valve rod of natural gas line valve (20), still install brake-off gear (21) on the shaft of driving gear (16), brake-off gear (21) and brake-off pole (22) meshing, brake-off pole (22) and electric brake (23) clearance fit.
2. An anti-seismic device with an automatic closing function of an electric pipeline according to claim 1, characterized in that: buffer seat (5) include shock pad (24) and buffer disc (25), buffer disc (25) bottom is provided with a plurality of damping spring (26) along its axle center direction annular array, damping spring (26) fixed mounting is in fixing base (4), striker (6) fixed mounting is in buffer disc (25) bottom, fixing base (4) bottom still fixed mounting has mounting base (27).
3. An anti-seismic device with an electric pipeline automatic closing function according to claim 2, characterized in that: the shock pad (24) is of a layered structure formed by arranging steel plates and rubber pads at intervals.
4. An anti-seismic device with an automatic closing function of an electric pipeline according to claim 1, characterized in that: one side, far away from the energy storage spring (10), of the limiting claw (8) is fixedly provided with an extrusion spring (28), and the bottom of the limiting claw (8) is also fixedly provided with a stop lever (29).
5. An anti-seismic device with an automatic closing function of an electric pipeline according to claim 1, characterized in that: the impact rack (15) and the brake pull rod (22) are movably inserted in the limiting sleeve (30).
CN202010635287.0A 2020-07-03 2020-07-03 Anti-seismic device with electric pipeline self-closing function Withdrawn CN111750030A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010635287.0A CN111750030A (en) 2020-07-03 2020-07-03 Anti-seismic device with electric pipeline self-closing function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010635287.0A CN111750030A (en) 2020-07-03 2020-07-03 Anti-seismic device with electric pipeline self-closing function

Publications (1)

Publication Number Publication Date
CN111750030A true CN111750030A (en) 2020-10-09

Family

ID=72680405

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010635287.0A Withdrawn CN111750030A (en) 2020-07-03 2020-07-03 Anti-seismic device with electric pipeline self-closing function

Country Status (1)

Country Link
CN (1) CN111750030A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3606298A (en) * 1968-01-18 1971-09-20 Fritz Schaumann Method and apparatus for suppressing the transfer of mechanical oscillations
CN2152992Y (en) * 1993-02-20 1994-01-12 袁培茂 Automatic control valve for gaseous fuel
CN107420601A (en) * 2017-09-26 2017-12-01 中国地震局工程力学研究所 A kind of device of earthquake control gas lockout valve
CN108330814A (en) * 2018-02-10 2018-07-27 郑州航空工业管理学院 Buffer the bridge earthquake resistance device of energy dissipating
CN108517822A (en) * 2018-04-13 2018-09-11 卢海勇 A kind of new energy road sweeper
CN108652442A (en) * 2018-05-17 2018-10-16 何绮雯 It is a kind of to prepare soda device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3606298A (en) * 1968-01-18 1971-09-20 Fritz Schaumann Method and apparatus for suppressing the transfer of mechanical oscillations
CN2152992Y (en) * 1993-02-20 1994-01-12 袁培茂 Automatic control valve for gaseous fuel
CN107420601A (en) * 2017-09-26 2017-12-01 中国地震局工程力学研究所 A kind of device of earthquake control gas lockout valve
CN108330814A (en) * 2018-02-10 2018-07-27 郑州航空工业管理学院 Buffer the bridge earthquake resistance device of energy dissipating
CN108517822A (en) * 2018-04-13 2018-09-11 卢海勇 A kind of new energy road sweeper
CN108652442A (en) * 2018-05-17 2018-10-16 何绮雯 It is a kind of to prepare soda device

Similar Documents

Publication Publication Date Title
CN114274756B (en) Engine support with shock attenuation effect
CN112523376A (en) Self-resetting composite energy dissipation support for expanding displacement by using gear and opening inhaul cable by using pulley
CN201635179U (en) Building vibration-isolation braking support
CN211369051U (en) House building anti-seismic support
CN111750030A (en) Anti-seismic device with electric pipeline self-closing function
CN110878654A (en) Device capable of adjusting horizontal rigidity at will and adapting to wind resistance and shock isolation
CN109594673B (en) Linking bidirectional shock insulation support system
CN109779379B (en) Electric power electric wire netting wire pole
CN109779378B (en) Wire pole that electric power electric wire netting field used
CN109610668B (en) Disk spring group for shock insulation support
CN201420308Y (en) Steel ball-spring vibration isolation support structure
CN116815948B (en) Damping device of civil engineering structure
CN220666558U (en) Building structure design shock insulation fire prevention device
CN111287345A (en) Shock absorber for building
CN212740340U (en) Existing building installs elevator antidetonation connecting device additional
CN108382947B (en) Elevator hydraulic speed reducer
CN219604392U (en) Foundation structure is built in antidetonation room
CN111874781A (en) Existing building installs elevator antidetonation connecting device additional
CN219889019U (en) Hydraulic engineering construction pipeline installation shock mount
CN216742617U (en) Rack that shock resistance is strong
CN216552511U (en) Shock-absorbing assembly with strong anti-pulling capacity for building
CN220848500U (en) Damping support device for overhead floor of assembled subway station
CN212802055U (en) Steel construction building earthquake-resistant structure
CN117386020B (en) Graded energy consumption type three-way shock-absorbing and isolating support and manufacturing method thereof
CN219588019U (en) Effectual electromechanical engineering antidetonation support of shock attenuation

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
WW01 Invention patent application withdrawn after publication

Application publication date: 20201009

WW01 Invention patent application withdrawn after publication