CN101285110B - Sublance trolley anti-falling mechanism - Google Patents
Sublance trolley anti-falling mechanism Download PDFInfo
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- CN101285110B CN101285110B CN2008100479701A CN200810047970A CN101285110B CN 101285110 B CN101285110 B CN 101285110B CN 2008100479701 A CN2008100479701 A CN 2008100479701A CN 200810047970 A CN200810047970 A CN 200810047970A CN 101285110 B CN101285110 B CN 101285110B
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- pivot arm
- falling mechanism
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Abstract
Sub-lance carriage fall arrest mechanism relates to an oxygen supply equipment on a top-blown oxygen converter. In order to prevent the sub-lance carriage from falling, the invention provides a sub-lance carriage fall arrest mechanism. The sub-lance carriage fall arrest mechanism comprises cable wires which drive a carriage to move up and down on tracks, is characterized in that the sub-lance carriage fall arrest mechanism also comprises a rotary arm, a connecting bar and a locking pawl, wherein the middle part of the rotary arm is hinged on a carriage frame; one end of the rotary arm is hinged with the end of the cable wire, while the other end of the rotary arm is hinged with the end of the connecting bar; the lower part of the rotary arm, connected with the connecting bar, is provided with a spring which can be compressed by rotated the rotary arm; one end of locking pawl is hinged with the carriage frame, while the other end is hinged with the other end of the connecting bar; the end face of the locking pawl connected with the connecting bar can get into contact with the track through the structure. The sub-lance carriage fall arrest mechanism effectively restrains carriage from falling down when cable wires broken and greatly improves the liability of sub-lance work and carriage work, so the sub-lance carriage fall arrest mechanism is propitious to spread and exploitation.
Description
Technical field
The present invention relates to a kind of smelting mechanical equipment, the oxygen supply equipment on particularly a kind of top-blown oxygen converter.
Background technology
Oxygen coverter equipment comprises the sublance mechanical means, and sublance claims to detect rifle again, is the device of directly measuring liquid steel temperature, carbon content and sampling on the top-blown oxygen converter, relies on the sublance measurement to regulate oxygen gun blowing amount and flux addition in the convertor steelmaking process.Sublance is fixed on the lift cart, and lift cart moves up and down along guide rail.Dolly is connected with counterweight with wireline.When windlass was mentioned counterweight, sublance and lift cart descended because of deadweight; When putting down counterweight, sublance is mentioned by its weight.
Converter is in steelmaking process, sublance weighs down the rifle phenomenon and happens occasionally, in case the rifle accident occurs weighing down, sublance body lower end will be inserted in the body of heater high-temperature molten steel and will be melted damage, not only cause direct equipment loss, and spend a large amount of time and change and adjustment equipment, one heat steel water has 100～300 tons approximately, refines a stove less or a few stove molten steel will cause bigger financial loss indirectly; Especially feed high-pressure cooling water in the sublance body, the converter safety in production is constituted potential threat, even make converter body may produce blast.
Therefore, avoiding taking place sublance bob rifle accident is significant to STEELMAKING PRODUCTION.
Summary of the invention
In order to prevent to avoid weighing down the generation of rifle accident owing to the caused bob rifle of reason problems such as track deformation, the increase of dolly fast lifting moving load, wireline fatigues, the invention provides a kind of sublance trolley anti-falling mechanism, can address the above problem preferably.
Purpose of the present invention is achieved by the following scheme:
A kind of sublance trolley anti-falling mechanism, it comprises wireline, wireline drives dolly and moves up and down in orbit, it is characterized in that, also comprise pivot arm, connecting rod and tripping pawl, described pivot arm mid-way is hinged in the car frame, and the two ends of pivot arm are hinged with the termination of the termination of wireline, connecting rod respectively, the pivot arm lower end that is connected with link end is provided with spring, can compress this spring after the pivot arm rotation; The tripping pawl two ends are hinged with another termination of car frame, connecting rod respectively; The tripping pawl end face that is connected side with connecting rod can be realized and the contacting of track by said structure.
To the said structure prioritization scheme be, the tripping pawl edge that can contact with track is set to roughened end surface, thereby increases the friction between tripping pawl and the track.Simultaneously, this roughened end surface and interorbital coefficient of friction f
2Need satisfy following formula:
Wherein, f
2Be the frictional coefficient of tripping pawl and track,
Be tripping pawl work center line and horizontal angle, f is the frictional coefficient of hinge, and d is the hinge diameter, L
1Be the horizontal throw of hinge center to the rail back side, braking point.
To the further prioritization scheme of said structure is that described connecting rod has the adjustable length structure.Regulate the length of connecting rod, both can regulate the distance between tripping pawl and the track, can regulate tripping pawl work center line and horizontal angle again, thereby realize braking better.
For fear of tripping pawl braking suddenly track is caused damage, further the scheme of design is, is provided with backgear with the track opposite side of tripping pawl opposite position, and described backgear carries out relative position by car frame to be fixed, thereby makes the track stress balance.
To backgear structure optimization scheme be, setting-up eccentricity cover on the wheel shaft of backgear, and be connected in the car frame by the excentric shaft of eccentric bushing, thereby the convenient distance of adjusting between backgear and the track.
In order to increase the work-ing life of spring, the present invention also provides a kind of prioritization scheme, promptly fixed stop piece in the car frame of pivot arm side-lower can touch this scotch behind the pivot arm rotation compression spring, and scotch plays the purpose of the further compression spring of controls revolution arm.
For the elastic force of control spring better, described spring setting had force of compression adjustable size joint structure, concrete structure comprises by cover and spring on the spring belled spring traps, cover is hinged on the afterbody of pivot arm on the described spring, described spring is trapped and is fixed on the spring hinge slide, described spring hinge slide is arranged on the guide path of car frame, the lower end of described spring hinge slide is provided with the screw rod cover that is threaded with car frame, and the screw rod that is positioned at the car frame lower end puts and is socketed with set nut.
In addition,, the invention provides a kind of preferred version for dolly wheel, i.e. setting-up eccentricity cover on the wheel of dolly one siding track, and be connected in the car frame by the excentric shaft of eccentric bushing.
The present invention is by the cooperation of four-bar mechanism and spring, and the falling of dolly when having avoided wireline that fracture takes place effectively improved the reliability of sublance and dolly work greatly; Simultaneously, the present invention has guaranteed that also dolly has certain shock absorption when starting and parking, thereby alleviates the inertia impact to windlass, the tension force that wireline is produced suddenly reduces, thereby improve the security of sublance trolley, avoid occurring falling accident, therefore be beneficial to and apply.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the side-view of Fig. 1;
Fig. 3 is the A-A part sectioned view of Fig. 1;
Fig. 4 is the B-B sectional view of Fig. 1;
Fig. 5 is the structural representation of connecting rod 6;
Fig. 6 is the structural representation of scotch part.
Wherein, wireline 1, balance web plate 2, bearing pin 3, middle tie-beam 4, pivot arm 5, connecting rod 6, double-screw bolt 6-1, adjustable bolt 6-2, set nut 6-3, the bearing pin 7 that tripping pawl and car frame are hinged, tripping pawl 8, car frame 9, tripping pawl edge 10, backgear 11, sublance 12, nut 13, the elongated pull bar 14 that leads, set nut 15, screw rod cover 16, spring hinge slide 17, guide path 18, spring trap 19, spring 20, centre hole 21, overlap 22 on the spring, scotch 23, dolly 24, track 25.
Embodiment
Elaborate the preferred embodiment of the present invention below in conjunction with accompanying drawing.
A kind of sublance trolley anti-falling mechanism, it comprises wireline 1, wireline 1 can drive dolly 24 and move up and down on track 25.The innovative point of this patent is, with reference to Fig. 1, Fig. 2, between wireline 1 and dolly 24, be connected with pivot arm 5, connecting rod 6 and tripping pawl 8, concrete syndeton is, described pivot arm 5 mid-ways are hinged in the car frame by bearing pin 3, the lower end of wireline 1 is connected with an end of pivot arm 5 with middle tie-beam 4 by balance web plate 2, a termination of the other end of pivot arm 5 and connecting rod 6 is hinged, another termination of connecting rod 6 and an end of tripping pawl 8 are hinged, and the other end of tripping pawl 8 and car frame 9 are hinged.Simultaneously, also be provided with spring 20 in the lower end of the pivot arm 5 of " side is connected with connecting rod 6 terminations ", pivot arm 5 can compress this spring 20 after bearing pin 3 rotations; The end face that is connected the tripping pawl 8 of side with connecting rod 6 can realize and the contacting of track 25 by said structure, thereby realizes the braking to the dolly that falls.
The specific implementation process is:
When fracture accident takes place suddenly in wireline 1, sublance body 12 and dolly 24 descend freely falling body ground fast, the tension force F of wireline 1 is zero, compression spring 20 power on this device are at this moment as prime mover, drive pivot arm 5 and be rotated counterclockwise certain angle around bearing pin 3, drivening rod 6 makes tripping pawl 8 be rotated counterclockwise certain angle simultaneously, tripping pawl 8 begins to contact and produce powerful positive pressure with orbital plane, tripping pawl 8 produces enough big frictional force with interorbital, braking is on track 25 rapidly with dolly 24, and prevention sublance body 12 and dolly 24 continue to fall.
Increase tripping pawl 8 and 25 frictional forces of track concrete scheme can for, the tripping pawl edge 10 that contacts with track 25 is set to roughened end surface, can be processed into thick insertion waves with braking working face, or netted lines, can realize described purpose.
Above-mentioned anti-falling mechanism can realize that to the arresting prerequisite of dolly be known.Simply be described below at this:
The prerequisite of dolly brake self-locking is:
Promptly
(because
Very little, can ignore)
Wherein, f
2Be the frictional coefficient of tripping pawl and track,
Be tripping pawl work center line and horizontal angle, f is the frictional coefficient of hinge, and d is the hinge diameter, L
1Be the horizontal throw of hinge center to the rail back side, braking point, L
2Be the vertical range of hinge center to the rail back side, braking point.
Therefore, in actual use, need make tripping pawl satisfy above-mentioned condition and could realize braking.
Connecting rod 6 shown in the accompanying drawing 1 and tripping pawl 8 all are arranged on the below of pivot arm 5, and tripping pawl 8 can be braked on the track non-working surface.But the present invention is not limited to this a kind of technical scheme, in actual the use, connecting rod 6 and tripping pawl 8 can also be arranged on the top of pivot arm 5, but tripping pawl 8 needs braking on the trackwork face, like this, when wireline 1 ruptures suddenly, spring 20 relies on elastic force can make tripping pawl 8 brakings in orbit.
Tripping pawl 8 should be controlled in the reasonable scope with the gap value of track 25, if gap value δ 1 is too little, tripping pawl 8 contacts easily with track 25, and the dolly lifting is had some setbacks; If gap value δ 1 is excessive, it is anti-fall unreliable that the dolly lifting is braked.Therefore, test finds that this gap amount should be controlled at δ 1=3.5～4.5mm, reach target range by the length of regulating connecting rod 6 with regard to the adjustable clearance amount according to practical situation, simultaneously, regulate the length of connecting rod 6 and can regulate tripping pawl 8 work center lines and horizontal angle again, thereby realize braking better.Present embodiment provides a kind of regulating mechanism of length of connecting rod, as shown in Figure 5, the two ends of connecting rod 6 (a part and b part among Fig. 5) are threaded by double-screw bolt 6-1, double-screw bolt 6-1 is provided with adjustable bolt 6-2 and set nut 6-3, drive the distance that double-screw bolt 6-1 rotation just can be adjusted connecting rod a part and b part by adjustable bolt 6-2 rotation, through set nut 6-3 locking, can realize the length adjustment of connecting rod again.
When tripping pawl 8 braking suddenly, the gravity of dolly 24 and sublance 12 all acts on suddenly on the track 25 of tripping pawl 8 positions, therefore can very easily make track 25 distortion to the very big positive pressure of the local generation of track.Take place for fear of this situation, the invention provides a kind of structure that can when braking suddenly, make track 25 stress balances, promptly at the track opposite side with tripping pawl 8 opposite positions backgear 11 is set, backgear 11 is undertaken fixing with the relative position of tripping pawl 8 by car frame.When dolly is normally walked, backgear 11 rolls along track 25 equally, when tripping pawl 8 contacts with the track non-working surface when beginning to brake, 8 pairs of track 25 non-working surfaces of tripping pawl produce very big positive pressure, and the backgear 11 that is installed on the trackwork face produces corresponding positive pressure simultaneously, the two is cancelled out each other, and guarantees that the trackwork face is straight indeformable.
Structure optimization scheme to backgear 11 is, setting-up eccentricity cover on the wheel shaft of backgear, and be connected in the car frame by the excentric shaft of eccentric bushing; Like this, with spanner rotating eccentricity cover, the gap value that just can adjust backgear and trackwork face makes it to level off to zero, and is straight indeformable to guarantee the trackwork face better.
In order to increase the work-ing life of spring 20, the present invention also provides a kind of prioritization scheme, i.e. fixed stop piece 23 in the car frame of pivot arm 5 side-lowers.With reference to Fig. 1 and Fig. 6, when dolly in the decline process, the tension force of wireline 1 is little, between pivot arm 5 afterbodys and the scotch 23 spacing h is arranged; When dolly rising or accelerator in, the tension force of wireline 1 is big, pivot arm 5 rotations, its tail compression spring 20 just can touch this scotch 23 to back to a certain degree, i.e. spacing h=0 between the afterbody of pivot arm 5 and the scotch 23, and scotch 23 plays the effect of prevention pivot arm 5 further compression springs 20, like this, the force of compression size of spring 20 no longer increases, thereby spring 20 is worked in elastic range all the time, so scotch 23 can prolong the work-ing life of spring 20.
For the elastic force that makes spring 20 reaches target call, the invention provides a kind of spring structure of force of compression adjustable size joint, with reference to Fig. 1, concrete structure comprises on the spring that cover 22 and spring trap 19, cover 22 is hinged on the afterbody of pivot arm 5 on the described spring, described spring is trapped and 19 is fixed on the spring hinge slide 17, last cover 22 and trap and be socketed with spring 20 between 19, described spring hinge slide 17 is arranged on the guide path 18 of car frame, the lower end of described spring hinge slide 17 is provided with the screw rod cover 16 that is threaded with car frame, and the screw rod that is positioned at the car frame lower end overlaps on 16 and is socketed with set nut 15.When needing to adjust the draught of spring 20, at first unclamp set nut 15, twist screw rod cover 16, make hinge slide 17 in guide path 18, rise or descend and just can adjust the draught of spring 20 with spanner.
Because dolly is provided with the wheel of three directions and walks on the track of three directions respectively, therefore, the wheel position of three directions and the orbital position of three directions need macrogamy, and this has certain difficulty for construction and installation.Therefore, the invention provides a kind of preferred version, promptly with dolly wheel that a siding track cooperates on the setting-up eccentricity cover, and be connected in the car frame by the excentric shaft of eccentric bushing.Like this,, just can adjust the position of dolly wheel, after the both sides wheel has been provided with in orbit in addition, make the wheel of third direction realize leveling off to zero with the gap value of trackwork face with spanner rotating eccentricity cover, thus the security that improves trolley travelling.
Simultaneously, the present invention has designed the elongated pull bar 14 of guiding, and on described spring, overlap 22, spring traps 19, hinge slide 17 and screw rod overlap 16 centers and all be provided with the centre hole 21 that passes through for the elongated pull bar 14 of guiding.When dolly tentatively assembled, with spanner nutting 13, these elongated pull bar 14 one side that lead play the guiding role to spring/spring housing on the other hand with regard to compressible spring 20.
The foregoing description just on the structure to the specific descriptions of anti-falling mechanism, and in use, described parts are not limited to have only one group, during test, in the zygomorphy of dolly such one group of anti-falling mechanism are set, and can play better braking effect.When being symmetrical arranged described anti-falling mechanism, the hinged bearing pin 7 of tripping pawl and car frame can use the axle of having strong market potential, like this, one can make the position consistency of two tripping pawls 8, produce double friction thereby can when needs are braked, start work simultaneously again, thereby make braking anti-fall more reliable.
When dismounting, windlass wireline 1 is up carried dolly, tripping pawl 8 is turned clockwise de-orbit, and positive pressure/damping force is removed automatically, does not promptly need extra lifting force, and tripping pawl 8 can be loose voluntarily.Dolly is resumed work quickly and easily, and the dismantling property after the braking is fine.
In addition, above-mentioned embodiment just to exemplary illustration of the present invention and and non-limiting its protection domain, those skilled in the art can be equal to replacement to the present invention's local structure, all within the protection domain of this patent.
Claims (10)
1. sublance trolley anti-falling mechanism, it comprises wireline, wireline drives dolly and moves up and down in orbit, it is characterized in that, also comprise pivot arm, connecting rod and tripping pawl, described pivot arm mid-way is hinged in the car frame, and the two ends of pivot arm are hinged with the termination of the termination of wireline, connecting rod respectively, the pivot arm lower end that is connected with link end is provided with spring, can compress this spring after the pivot arm rotation; The tripping pawl two ends are hinged by another termination of hinge and car frame, connecting rod respectively; The tripping pawl end face that is connected side with connecting rod can be realized and the contacting of track by said structure.
2. sublance trolley anti-falling mechanism according to claim 1 is characterized in that the tripping pawl edge that can contact with track is set to roughened end surface, and this end face and interorbital coefficient of friction f2 need satisfy following formula:
Wherein, f
2Be the frictional coefficient of tripping pawl and track,
Be tripping pawl work center line and horizontal angle, f is the frictional coefficient of hinge, and d is the hinge diameter, L
1Be the horizontal throw of hinge center to the rail back side, braking point.
3. sublance trolley anti-falling mechanism according to claim 1 is characterized in that described connecting rod has the adjustable length structure.
4. sublance trolley anti-falling mechanism according to claim 1 is characterized in that being provided with backgear with the track opposite side of tripping pawl opposite position, and described backgear carries out relative position by car frame to be fixed.
5. sublance trolley anti-falling mechanism according to claim 4 is characterized in that setting-up eccentricity cover on the wheel shaft of described backgear, and is connected in the car frame by the excentric shaft of eccentric bushing.
6. according to each described sublance trolley anti-falling mechanism of claim 1-5, it is characterized in that it also comprises scotch, described scotch is fixed in the car frame of pivot arm side-lower, can touch this scotch behind the pivot arm rotation compression spring.
7. according to each described sublance trolley anti-falling mechanism of claim 1-5, it is characterized in that described spring has force of compression size adjustment structure.
8. sublance trolley anti-falling mechanism according to claim 7, it is characterized in that force of compression size adjustment structure comprise by on the spring belled spring cover and spring trap, cover is hinged on the afterbody of pivot arm on the described spring, described spring is trapped and is fixed on the spring hinge slide, described spring hinge slide is arranged on the guide path of car frame, the lower end of described spring hinge slide is provided with the screw rod cover that is threaded with car frame, and the screw rod that is positioned at the car frame lower end puts and is socketed with set nut.
9. sublance trolley anti-falling mechanism according to claim 8 is characterized in that on the described spring that slide is trapped, cut with scissors to cover, spring and screw rod cover center all is provided with the centre hole that passes through for the elongated pull bar of guiding.
10. according to each described sublance trolley anti-falling mechanism of claim 1-5, it is characterized in that setting-up eccentricity cover on the wheel of dolly one siding track, and be connected in the car frame by the excentric shaft of eccentric bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100479701A CN101285110B (en) | 2008-06-11 | 2008-06-11 | Sublance trolley anti-falling mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100479701A CN101285110B (en) | 2008-06-11 | 2008-06-11 | Sublance trolley anti-falling mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101285110A CN101285110A (en) | 2008-10-15 |
| CN101285110B true CN101285110B (en) | 2010-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100479701A Expired - Fee Related CN101285110B (en) | 2008-06-11 | 2008-06-11 | Sublance trolley anti-falling mechanism |
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| CN (1) | CN101285110B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104555790B (en) * | 2014-12-22 | 2017-03-01 | 中冶南方工程技术有限公司 | It is applied to the anti-fall lift cart of mechanical agitation desulfurizing iron |
| CN106755740B (en) * | 2016-12-12 | 2019-09-20 | 鞍山市和丰耐火材料有限公司 | A kind of desulfurizing iron rotary blowing equipment and blowing method |
| CN111485058A (en) * | 2020-06-15 | 2020-08-04 | 金鼎重工有限公司 | Mechanical external oxygen lance anti-falling device |
| CN112298268B (en) * | 2020-10-26 | 2022-04-15 | 扬州大学 | Compact electromagnetic eddy current gap-adjusting brake device |
| CN112853034B (en) * | 2020-12-29 | 2022-03-11 | 武汉方特工业设备技术有限公司 | Trolley anti-falling device for intelligent steelmaking converter sublance system |
| CN114085945B (en) * | 2021-11-20 | 2022-11-08 | 潍坊峻林冶金工程技术有限公司 | Novel oxygen lance lifting trolley |
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2008
- 2008-06-11 CN CN2008100479701A patent/CN101285110B/en not_active Expired - Fee Related
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| CN101285110A (en) | 2008-10-15 |
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