CN107253454A - Portable contact net safety interlock - Google Patents
Portable contact net safety interlock Download PDFInfo
- Publication number
- CN107253454A CN107253454A CN201710573270.5A CN201710573270A CN107253454A CN 107253454 A CN107253454 A CN 107253454A CN 201710573270 A CN201710573270 A CN 201710573270A CN 107253454 A CN107253454 A CN 107253454A
- Authority
- CN
- China
- Prior art keywords
- contact net
- portable contact
- bar
- bus
- portable
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/02—Details
- B60M1/04—Mechanical protection of line; Protection against contact by living beings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
Portable contact net safety interlock disclosed by the invention, it is adaptable to portable contact net, including transient sublevel seal, safety control and autoalarm；The transient sublevel seal, safety control and autoalarm carry out electric interlock control.Transient sublevel seal has " Z " type structure, between the portable contact net of two sections directly over track；Safety control locks contact net when two sections of portable contact nets are shown in place or shown and transfinite, and prevents from transfiniting；If showing transfinites, disconnecting switch can not be operated, and autoalarm can carry out sound and light alarm.In the portable contact net course of work, using the portable contact net safety interlock of the present invention, two sections can be prevented effectively from（Or more than two sections）Portable contact net shows super limited time contact, the short circuit phenomenon caused by, and the personal safety using safety and live effect personnel to power supply unit plays a protective role, and has evaded unnecessary danger.
Description
Technical field
The present invention relates to portable contact net field, more particularly to a kind of portable contact net safety interlock.
Background technology
Portable contact net is that one kind debugs offer power electric to rail traffic vehicles into and out of maintenance storehouse and in maintenance storehouse
The equipment in source.Realize that different condition has electricity or without electric maintenance to overhaul the diverse location of station track at certain, typically can be same
The top of bar maintenance station track sets at least two sections moveable contact nets.But moveable contact net be flapped toward maintenance station track just on
Fang Shi, because the travel switch that the portable contact net of detection is shown in place breaks down, or due to artificial maloperation, causes to connect
Touch net and continue to swing, the phenomenon that transfinites occur, so that two sections will not contacted originally（Or more than two sections）Contact net is directly contacted.
When the portable contact net to wherein a certain maintenance station track carries out power transmission, the short circuit of contact net can be caused, power supply unit is made
Into major injury, or even threaten the personal safety of on-site personnel.
The content of the invention
Therefore, the present invention provides a kind of portable contact net safety interlock, efficiently solve above-mentioned movable type and connect
Net-fault shows the technical problem transfinited.
According to an aspect of the invention, there is provided a kind of portable contact net safety interlock, it is adaptable to portable
Contact net, including transient sublevel seal, safety control and autoalarm；The transient sublevel seal,
Safety control carries out electric interlock control with autoalarm.
Alternatively, according to the portable contact net safety interlock of the present invention, the portable contact net fixes in-orbit
On the column of road side, long arm swing is waited with two be connected with column, swing arm other end has isometric insulator, insulated
Bus-bar is connected between sub- the other end；Different portable contact nets has swing arm and the bus-bar of different length.
Alternatively, according to the portable contact net safety interlock of the present invention, the transient sublevel seal is by two
Composite insulator composition between side bus-bar and its opposite end, with " Z " type structure.
Alternatively, according to the portable contact net safety interlock of the present invention, the both sides bus-bar other end has
There is the overlapping region with portable contact net bus-bar, the length of the bus-bar overlapping region insulate less than the transient sublevel
The length of device one side bus-bar.
Alternatively, according to the portable contact net safety interlock of the present invention, the transient sublevel seal is fixed
Directly over track, between two sections of portable contact nets.
Alternatively, according to the portable contact net safety interlock of the present invention, the transient sublevel seal is installed
In one end of telescopic devices, its other end is fixed on the column of track side；During work, telescopic devices are stretched out will be described
Transient sublevel seal is moved to directly over track and between two sections of portable contact nets.
Alternatively, according to the portable contact net safety interlock of the present invention, the safety control includes outside
Collision block and composite module, the composite module by electromagnetic lock module, internal collision block and, travel switch, back-moving spring, electric insulation layer
Composition.
Alternatively, according to the portable contact net safety interlock of the present invention, the travel switch includes stroke in place
Switch and the travel switch that transfinites；The electric insulation layer be located at the composite module and the transient sublevel seal bus-bar it
Between, the electric insulation layer is located between the outside collision block and the portable contact net bus-bar.
Alternatively, according to the portable contact net safety interlock of the present invention, the safety control is located at and confluxed
Overlapping region is arranged, wherein, the outside collision block, composite module are respectively and fixedly installed to movable type and connect by welding, bolt mode
The end of net-fault bus-bar, transient sublevel seal both sides bus-bar.
Alternatively, according to the portable contact net safety interlock of the present invention, the portable contact net is shown in place
During work, the outside collision block abuts the composite module, and positioned at the outside of the composite module.
Portable contact net safety interlock disclosed by the invention, it is adaptable to portable contact net, including transient sublevel
Seal, safety control and autoalarm；The transient sublevel seal, safety control and automatic report
Alarm device carries out electric interlock control.Transient sublevel seal and safety control are located at two sections of movements directly over track
Between formula contact net, when wherein certain section contact net is shown in place, the travel switch in place in safety control is triggered, electricity
Gas interlock control system, which is provided, shows signal in place, while the electromagnetic lock module energization work in safety control, realizes two
The locking of the portable contact net of section and transient sublevel seal；When event occurs in the travel switch that detection contact net is shown in place
Barrier, or by artificial maloperation, the travel switch that transfinites in safety control is triggered, and electric interlock control system is to excess of export
Signal is limited, now disconnecting switch can not be operated, power transmission operation stops；Meanwhile, autoalarm sends sound and light alarm, reminds existing
The portable contact net of field operating personnel, which is shown, to transfinite.The portable contact net safety interlock of the present invention, effectively prevent two
Section（Or more）The direct contact of portable contact net short circuit phenomenon caused by, it is ensured that power supply unit and operating system
Using safety, the personal safety of on-site personnel is also further ensured.
Brief description of the drawings
By reading the detailed description of following detailed description, various other advantages and benefit is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of embodiment, and is not considered as to invention
Limitation.In the accompanying drawings：
Fig. 1 is that the applicable portable contact net of the present invention shows working state figure.
Fig. 2 is the transient sublevel seal and safety control in a safety interlock embodiment of the invention
Structural representation.
Fig. 3 is the principle schematic that safety interlock of the present invention realizes electric interlock control.
Fig. 4 is the schematic diagram that the anti-mechanical structure that transfinites of portable contact net shows process.
Fig. 5 is that the anti-mechanical structure that transfinites of portable contact net shows schematic diagram in place.
Wherein part description is as follows：
The insulator of 10 11 swing arm of portable contact net 12
The bus-bar overlapping region of 13 bus-bar 14
The composite insulator of 20 transient sublevel seal, 21 bus-bar 22
The composite module of 30 safety control, 31 outside collision block 32
321 and 326 inside collision blocks 322 back-moving spring of travel switch 323 in place
324 transfinite the electromagnetic lock module of 325 and 328 electric insulation layer of travel switch 327
40 autoalarms
Embodiment
The present invention is further detailed explanation with specific embodiment below in conjunction with the accompanying drawings.The embodiment is shown
Example is shown in the drawings, and the specific embodiment described in following embodiments of the present invention is only as the specific reality of the present invention
Apply the exemplary illustration of mode, it is intended to for explaining the present invention, and be not configured to limitation of the present invention.
Fig. 1 is that the applicable portable contact net of the present invention shows working state figure.
As shown in figure 1, the invention provides a kind of portable contact net safety interlock, it is adaptable to movable type contact
Net, including transient sublevel seal 20, safety control 30 and autoalarm 40, wherein, transient sublevel insulation dress
Put 20, safety control 30 and carry out electric interlock control with autoalarm 40.
Portable contact net 10 is fixed on the factory building column of track side, for rail traffic vehicles into and out of maintenance
Storehouse and in maintenance storehouse debugging electrical source of power is provided, wait long arm swing 11 be connected with column two, swing arm one end with it is vertical
Post is connected and can rotated, and the anglec of rotation is 0-90 °；The other end end of swing arm 11 is connected with insulator 12, and same section of movable type
Two on contact net are waited the insulator length of long arm swing end also identical, are connected with and are connect between the other end for waiting long insulator 12
Net-fault bus-bar 13.To overhaul the maintenance that the diverse location of station track realizes different condition at certain, it can typically be overhauled in same
The top of station track sets at least two sections moveable contact nets, and different portable contact nets has the swing arm of different length, its
Between bus-bar length also differ.
Fig. 2 is the transient sublevel seal and safety control in a safety interlock embodiment of the invention
Structural representation.
As shown in the figures 1 and 2, the transient sublevel seal 20 in portable contact net safety interlock of the invention by
Composite insulator 22 between both sides bus-bar 21 and its opposite end end is constituted, and " Z " type structure is presented；The transient sublevel is exhausted
Edge device 20 is arranged on directly over track, between two sections of portable contact nets 10.
Further, because the position of two sections of portable contact nets on certain station track is fixed, therefore " Z " type structure therebetween
Transient sublevel seal can also be fixedly mounted between two sections of portable contact nets and directly over track, be fixedly mounted
Mode can be lifting or other fixed installation modes at the top of the factory building.
Because track vehicle overhauling Commissioning field is needed by auxiliary equipments such as cranes, the transient sublevel of fixed installation insulate
Device inevitably produces interference to the operation process of auxiliary equipment.Therefore, further, transient sublevel seal 20
Position on-fixed, may be mounted at one end of telescopic devices, the other end of telescopic devices is fixed on the vertical of track side
On post；During work, telescopic devices stretch out two sections of movements that the transient sublevel seal 20 is moved to directly over track
Between formula contact net 10；When not working, telescopic devices are shunk, and transient sublevel seal is left directly over track, are easy to inspection
Repair auxiliary equipment normal operation.
As shown in the figures 1 and 2, two outer ends of transient sublevel seal both sides bus-bar 21 are respectively provided with and portable contact net
The overlapping region 14 of bus-bar 13, the length of the bus-bar overlapping region 14 is less than the unilateral bus-bar of transient sublevel seal
21 length.
As shown in Fig. 2 the portable contact net safety interlock that the present invention is provided, safety control 30 therein is wrapped
Include outside collision block 31 and composite module 32, the composite module 32 includes electromagnetic lock module 327, internal collision block 321 and 326, OK
Cheng Kaiguan, back-moving spring 323, electric insulation layer 325 and 328；When portable contact net 10 is shown in place or transfinited, outside collision block
31 hit extruding electromagnetic lock module 327, and electromagnetic lock module 327 and internal collision block produce transverse shifting, and internal collision block hits in place
Travel switch roller, travel switch is triggered, and electric interlock control system accordingly provides signal of showing in place or transfinite.
Further, the travel switch in composite module 32 includes travel switch 322 in place and the travel switch 324 that transfinites.
As shown in the figures 1 and 2, according to the portable contact net safety interlock of the present invention, safety control therein
30 are located at bus-bar overlapping region 14, wherein, the outside collision block 31 is fixed by welding, bolt connection or other connected modes
On the upside of the end of portable contact net bus-bar 11, the composite module 32 is welding, by way of bolt or other companies
The mode of connecing is fixedly mounted on the downside of the end of the both sides bus-bar 21 of transient sublevel seal 20.Outside collision block 31 and combination
Collision block 32 is located at the end of corresponding bus-bar, as still the installation site of downside can not be limited on the upside of bus-bar end
It is fixed, because pantograph and contact line are just in the installation site and without prejudice to rail vehicle of outside collision block 31 and combination collision block 32
Normal sliding contact.Show in place：When the swing arm 11 of portable contact net 10 together with bus-bar 13 is therebetween showing process（0-
90°）In, the outside collision block 31 positioned at the end of bus-bar 13 is located at the end of transient sublevel seal bus-bar 21 by extruding
Composite module 32 in electromagnetic lock module 327, electromagnetic lock module 327 and internal collision block 321 is produced transverse shifting, work as inside
Collision block 321 is when striking the roller of travel switch 322 in place during transverse shifting, travel switch 322 is triggered in place, table
Show that the portable contact net of this section is shown in place（90°）, while to electric interlock control system one show signal in place, it is now electric
The energization work of magnetic padlock module 327, its powerful suction produced tightly holds the outside collision block of portable contact net bus-bar end
31, so that portable contact net is locked with transient sublevel seal.After locking, staff sees electric interlock control system
What system was provided shows signal in place, and disconnecting switch operation gives the portable contact net shown in place to carry out power transmission operation.
Showing transfinites：When the travel switch of detection mobile catenary in place（Do not indicated in figure）When breaking down, Huo Zheyou
In artificial maloperation, contact net swing arm is caused to continue to swing, the outside collision block 31 of its end may proceed to extruding transient sublevel insulation
The electromagnetic lock module 327 of device tail end, makes internal collision block 326 produce transverse shifting, and then hit the rolling for the travel switch 324 that transfinites
Wheel, the travel switch 324 that transfinites is triggered, and represents that safe operating position is crossed in the swing arm of the portable contact net of this section, shows super
Limit, now gives electric interlock control system one signal that transfinites, now disconnecting switch can not be operated, it is impossible to carry out power transmission operation.
Further, after the travel switch 324 that transfinites is triggered, representing that portable contact net is shown transfinites, now automatic report
Alarm device 40（Not shown in figure）Sound and light alarm is carried out, reminds site operation personnel contact net overrun issues occur, causes operation
Personnel note and carry out emergent management.The position of autoalarm can need to set according to scene, can be located at disconnecting switch
Near, the job description of autoalarm 40 is transfinited, then disconnecting switch can not now be operated, it is impossible to carry out power transmission operation.
As shown in the figures 1 and 2, portable contact net safety interlock of the invention, the back-moving spring 323 therein is used
In portable contact net after showing in place or showing the work transfinited, the position of composite module 32 and its internal components is recovered.
As shown in the figures 1 and 2, electric insulation layer 325 confluxes positioned at the composite module 32 with the transient sublevel seal
Between row 21, the electric insulation layer 328 is located between the outside collision block 31 and the portable contact net bus-bar 13.It is electric exhausted
Edge layer 325 and 328 can isolate the electric insulation between safety control and bus-bar.
Fig. 3 is the principle schematic that safety interlock of the present invention realizes electric interlock control.
As shown in figure 3, when portable contact net is shown in place, the inside collision block 321 in safety control 30 strikes
Position travel switch 322, causes the normally opened contact of travel switch 322 closure in place, and K1 relay coils are powered, and K1 relay normally opens are touched
Point closure, control electromagnetic lock module 327 is powered, the outside collision block 31 of absorption, and now disconnecting switch can be operated manually, and be sent
Electric operation.
As shown in figure 3, when the travel switch that the portable contact net of detection is shown in place breaks down or during artificial maloperation,
Internal collision block 326 hits the travel switch 324 that transfinites, and the normally-closed contact for the travel switch 324 that causes to transfinite disconnects, and feedback, which is shown, to transfinite
Signal can not be operated to PLC, now disconnecting switch, and power transmission operation stops.
During portable contact net is shown, prevent what is transfinited except the safety interlock of above-mentioned electric-mechanic control system can be realized
Function, mechanical structure it is anti-transfinite device can also simple realization prevent portable contact net from showing the function of transfiniting.
Fig. 4 is the schematic diagram that the anti-mechanical structure that transfinites of portable contact net shows process.
As shown in figure 4, the anti-mechanical structure transfinited of portable contact net is " L " type, positioned at contact net swing arm and column phase
One end is connected, its one end is fixedly welded on a middle side part of swing arm rotary shaft, in portable contact net swing arm from when showing for 0 °, this
Mechanical structure does not stress, and does not play a role.
Fig. 5 is that the anti-mechanical structure that transfinites of portable contact net shows schematic diagram in place.
As shown in figure 5, when mobile network swing arm is shown in place（90°）, the now anti-mechanical structure that transfinites of portable contact net
Working end shown with mobile network swing arm when in place where position it is perpendicular, but show travel switch in place when detection and occur
Failure, or during due to artificial maloperation, contact net swing arm continuation is swung, and now prevents that transfiniting mechanical structure as machinery directly keeps off,
Its working end stress, prevents the continuation of swing arm from swinging, realizing prevents portable contact net from showing the function of transfiniting.
Portable contact net safety interlock disclosed by the invention, it is adaptable to portable contact net, including transient sublevel
Seal, safety control and autoalarm；The transient sublevel seal, safety control and automatic report
Alarm device carries out electric interlock control.Transient sublevel seal has " Z " type structure, two sections of movements directly over track
Between formula contact net；Safety control locks contact net when two sections of portable contact nets are shown in place or shown and transfinite,
Prevent from transfiniting；If showing transfinites, disconnecting switch can not be operated, and autoalarm can carry out sound and light alarm.In movable type contact
In the net course of work, using the portable contact net safety interlock of the present invention, it can be prevented effectively from two sections（Or two sections with
On）The contact of portable contact net short circuit phenomenon caused by, to power supply unit using safety with live effect personnel's
Personal safety plays a protective role, and has evaded unnecessary danger.
Claims (10)
1. a kind of portable contact net safety interlock, it is adaptable to portable contact net（10）, it is characterised in that：Including transition
Sectional insulating device（20）, safety control（30）And autoalarm（40）；The transient sublevel seal（20）、
Safety control（30）With autoalarm（40）Carry out electric interlock control.
2. portable contact net safety interlock according to claim 1, it is characterised in that：The portable contact net
（10）On the column for being fixed on track side, long arm swing is waited with two be connected with column（11）, swing arm（11）The other end
With isometric insulator（12）, insulator（12）Contact net bus-bar is connected between the other end（13）；Different movements
Formula contact net has swing arm and the bus-bar of different length.
3. portable contact net safety interlock according to claim 1, it is characterised in that：The transient sublevel insulation
Device（20）By both sides bus-bar（21）And its composite insulator between opposite end（22）Composition, with " Z " type structure.
4. portable contact net safety interlock according to claim 3, it is characterised in that：The both sides bus-bar
（21）The other end is respectively provided with and portable contact net bus-bar（13）Overlapping region（14）, the bus-bar overlapping region（14）
Length be less than the unilateral bus-bar of the transient sublevel seal（21）Length.
5. portable contact net safety interlock according to claim 3, it is characterised in that：The transient sublevel insulation
Device（20）It is fixedly mounted on directly over track, positioned at two sections of portable contact nets（10）Between.
6. portable contact net safety interlock according to claim 3, it is characterised in that：The transient sublevel insulation
Device（20）Installed in one end of telescopic devices, its other end is fixed on the column of track side；During work, telescopic machine
Structure is stretched out the transient sublevel seal（20）It is moved to directly over track and positioned at two sections of portable contact nets（10）It
Between.
7. portable contact net safety interlock according to claim 1, it is characterised in that：The safety control
（30）Including outside collision block（31）And composite module（32）, the composite module（32）Including：Electromagnetic lock module（327）, it is internal
Collision block（321）With（326）, travel switch, back-moving spring（323）, electric insulation layer（325）With（328）；When the portable contact
Net（10）When showing in place or transfiniting, the outside collision block（31）Hit extruding electromagnetic lock module（327）, the electromagnetic lock module
（327）Transverse shifting is produced with internal collision block, internal collision block impact stroke switch roller, travel switch is triggered, electric interlock
Control system accordingly provides signal of showing in place or transfinite.
8. portable contact net safety interlock according to claim 7, it is characterised in that：The travel switch includes
Travel switch in place（322）With the travel switch that transfinites（324）；The electric insulation layer（325）Positioned at the composite module（32）With
The transient sublevel seal bus-bar（21）Between, the electric insulation layer（328）Positioned at the outside collision block（31）With institute
State portable contact net bus-bar（13）Between.
9. portable contact net safety interlock according to claim 1, it is characterised in that：The safety control
（30）Positioned at bus-bar overlapping region（14）, wherein, the outside collision block（31）, composite module（32）Pass through welding, bolt side
Formula is respectively and fixedly installed to the portable contact net bus-bar（11）, transient sublevel seal both sides bus-bar（21）End
End.
10. portable contact net safety interlock according to claim 1, it is characterised in that：The portable contact
Net（10）Show when working in place, the outside collision block（31）Against the composite module（32）, and positioned at the composite module
（32）Outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710573270.5A CN107253454B (en) | 2017-07-14 | 2017-07-14 | Movable contact net safety interlocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710573270.5A CN107253454B (en) | 2017-07-14 | 2017-07-14 | Movable contact net safety interlocking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107253454A true CN107253454A (en) | 2017-10-17 |
| CN107253454B CN107253454B (en) | 2023-08-18 |
Family
ID=60024980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710573270.5A Active CN107253454B (en) | 2017-07-14 | 2017-07-14 | Movable contact net safety interlocking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107253454B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1121254A (en) * | 1994-09-14 | 1996-04-24 | 羊城铁路总公司韶关机务段 | Automatic and safe monitoring device isolated switch |
| CN101306652A (en) * | 2008-06-05 | 2008-11-19 | 中铁电气化局集团宝鸡器材有限公司 | Horizontal rotation rigid moveable contact line system |
| CN201201528Y (en) * | 2008-05-13 | 2009-03-04 | 北京铁道工程机电技术研究所 | Railway side shifting type rigid movable contact electric network |
| CN201729071U (en) * | 2010-08-05 | 2011-02-02 | 银振刚 | Intelligent mobile contact screen |
| CN202011410U (en) * | 2011-04-02 | 2011-10-19 | 中铁电气化局集团宝鸡器材有限公司金台分厂 | Safety interlock control system for lateral moving rigid movable contact net used in overhaul shed of motor train unit |
| WO2012123252A1 (en) * | 2011-03-11 | 2012-09-20 | Siemens Aktiengesellschaft | Line switch system for a line system for supplying a vehicle with electricity |
| CN203623405U (en) * | 2013-11-29 | 2014-06-04 | 兰州华创交大电气科技有限责任公司 | Intelligent mobile overhead line system device for storeroom door |
-
2017
- 2017-07-14 CN CN201710573270.5A patent/CN107253454B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1121254A (en) * | 1994-09-14 | 1996-04-24 | 羊城铁路总公司韶关机务段 | Automatic and safe monitoring device isolated switch |
| CN201201528Y (en) * | 2008-05-13 | 2009-03-04 | 北京铁道工程机电技术研究所 | Railway side shifting type rigid movable contact electric network |
| CN101306652A (en) * | 2008-06-05 | 2008-11-19 | 中铁电气化局集团宝鸡器材有限公司 | Horizontal rotation rigid moveable contact line system |
| CN201729071U (en) * | 2010-08-05 | 2011-02-02 | 银振刚 | Intelligent mobile contact screen |
| WO2012123252A1 (en) * | 2011-03-11 | 2012-09-20 | Siemens Aktiengesellschaft | Line switch system for a line system for supplying a vehicle with electricity |
| CN202011410U (en) * | 2011-04-02 | 2011-10-19 | 中铁电气化局集团宝鸡器材有限公司金台分厂 | Safety interlock control system for lateral moving rigid movable contact net used in overhaul shed of motor train unit |
| CN203623405U (en) * | 2013-11-29 | 2014-06-04 | 兰州华创交大电气科技有限责任公司 | Intelligent mobile overhead line system device for storeroom door |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107253454B (en) | 2023-08-18 |
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