CN2189143Y - Skid-proof lifting machine - Google Patents
Skid-proof lifting machine Download PDFInfo
- Publication number
- CN2189143Y CN2189143Y CN 93209895 CN93209895U CN2189143Y CN 2189143 Y CN2189143 Y CN 2189143Y CN 93209895 CN93209895 CN 93209895 CN 93209895 U CN93209895 U CN 93209895U CN 2189143 Y CN2189143 Y CN 2189143Y
- Authority
- CN
- China
- Prior art keywords
- wheel
- ratchet
- driven
- towing machine
- ropes
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a skid-proof lifting machine which has the incorporate function of friction drive and fall prevention. A driven wheel is arranged around a drive wheel, and the rim has a ratchet and is matched with a brake pawl; a centrifugal speed limiter driven by the driven wheel controls the actions of the pawl; when a cage slides and falls down, the centrifugal speed limiter causes the ratchet to be engaged with the ratchet, and lifting ropes obtain frictional force for hovering the cage in a driven brake wheel slot; a mechanism for comparing the rotary speed of the driving wheel with rotary speed of the driven wheel is also arranged in the device; when the hoist ropes and the driving wheel generate sliding, the mechanism automatically cut off the power to stop the device to prevent the listing ropes from being frayed.
Description
The utility model relates to the driving and the falling proof device of elevator, lift car.
Lift car falls two kinds of situations, and a kind of is that the whole disrumpent feelings disconnected ropes of hoist ropes fall, and another kind is that the hypodynamic slip of the friction of hoist ropes in race is fallen, and the situation that disconnected now rope falls difficulty is seen, and only is to have possibility.Germany has individual the statistics in the use in 15 years of 200,000 elevators that twice hoist ropes disrumpent feelings (88 " elevator up-to-date technology collection of thesis ") only took place, the hoist ropes of elevator generally has four, calculate by probabilistic method, four disrumpent feelings situations of rope while seldom take place, and move 10 up and down at car
43Just run into once in inferior.The situation that slip is fallen is more common, has generally all been lived by the safety tongs braking, does not cause the accident.Reliability about velocity limiter-safety tongs drop preventer, a part test documentation explanation is arranged: transportation tissue in London carries out disconnected rope drop test 33 times to the product through European Community's normal structure approval, brake successfully 31 times, fail twice (English periodical " Elevator world " 86.11).
Safety tongs is in the fall arrest braking, guide rail, guide rail bracket there is higher requirement, the general ferro-concrete hoistway that adopts, along with industrial development, need increase with the place of elevator, but some does not possess the condition of building the standard hoistway and adorning regular elevator, therefore, many elevator and irregular elevators that promote with winch, electric block are arranged in the society, and security situation is not good.
By the situation explanation of statistics and test, the possibility that the disconnected rope of generation fell during traction drove is little of the degree that can disregard.10
43Meet once in inferior and the fall single step of releasing of failing in the braking 16.5 times of disconnected rope is in the same place, the latter has not had practical significance.If overcome the sliding problem during traction drives, safety tongs just can be out of use, and just can produce to adapt to the elevator that uses under the multiple condition thereupon.
The purpose of this utility model is that a kind of fall towing machine of function of self anti-sliding stop that has will be provided.
The purpose of this utility model is achieved in that flower wheel is set around the drive wheel of towing machine, do ratchet on the wheel rim, make control mechanism with the centrifugal speed limiter of following the flower wheel rotation, constitute between centrifugal speed limiter and ratchet with drive link and to get in touch, hoist ropes pile warp drive wheel and flower wheel, during normal the operation, drive link makes ratchet separate with ratchet.When car speed overshoot value, centrifugal speed limiter promptly moves, and makes ratchet and ratchet engagement through drive link, hoist ropes obtain hovering in the race of the being braked friction force of car.
Adorn two small generators; driven by drive wheel and flower wheel; two axles that perhaps are connected diff respectively by drive wheel and flower wheel; when the generation hoist ropes slides in the race of drive wheel; promptly produce speed discrepancy; between two small generators difference of potential has been arranged; electric current flows through the electromagnetic mechanism shutdown of cutting off the electricity supply by lead; or the third axle of box of tricks rotates the shutdown of going to cut off the electricity supply; prevent to overload or counterweight hoist ropes on one side on the not enough drive wheel that takes place of tension force rotate, car is motionless and rub hoist ropes.
Drive wheel, flower wheel and using pawl to brake mechanism are contained in the tool housing, and a shaft extension with retarder of driven by motor is gone in the housing, gear on the spindle nose and the engagement of the gear ring on the drive wheel.Do the hole or the ring that hang usefulness on the housing.
Ratchet direction on the flower wheel is towards counterweight, and the moving ratchet of preparation moves with centrifugal speed limiter control ratchet, the counterweight hypervelocity is descended brake.
The utility model and existing towing machine compare, and it is complete to have function, and the anti-stop mechanism that falls that slides is arranged self, can hang installation, the advantage of wide adaptability.
Below in conjunction with description of drawings:
Accompanying drawing 1 is the External view of anti-skidding towing machine, two steel plates (1), supporting sleeve (3) and bolt (4) have been formed casing, sheave shaft (5) passes casing, connecting otic placode (2) hangs over towing machine on the beam at elevator top, retarder (7) by motor (6) band is contained in the casing outside, and the detachable horizontal throw that pulley (9) will pass hoist ropes (10) both sides of towing machine that gets out that gets out on the pulley yoke (8) equates to the maintenance of the horizontal throw between counterweight (11) with car (12).
Accompanying drawing 2 is the constructional drawing of anti-skidding towing machine, in casing (13) lining, the pulley of having done ratchet on three wheel rims is arranged, (14A) be drive wheel, (14B, 14C) is flower wheel, be equipped with braking ratchet (15), click spring (16), the driving lever on the ratchet (17) reaches the outside from the hole of casing.Be contained in garden stud wheel (20) engagement on gear (19) and the pulley on the spindle nose of centrifugal speed limiter (18) in casing (steel body) outside, be through as the hole in the transmission improvement (21) of transmission device on the axle in the casing outside, its fork links to each other with the actuating mechanism of velocity limiter (18), all the other contact with ratchet driving lever (17), extension spring (23) tie-bar bar, make ratchet (15) break away from ratchet by driving lever (17), when the rotating speed overshoot value of flower wheel (14B), the action of shifting lever (21) promptly takes place in centrifugal speed limiter, overcome the pulling force of extension spring (23), lever (21) and driving lever (17) are disengaged, click spring (16) makes ratchet (15) and ratchet engagement, pulley (14A, 14B) be braked after, the total frictional force (promptly brake power that car slide) of hoist ropes (10) in pulley groove increases suddenly, and car is hovered.The available Euler's formula F=" F of value that friction force increases
1* e
Af" calculate; " a " altogether in the index be the cornerite of hoist ropes to pulley; after flower wheel (14B) is braked; the value of " a " equal hoist ropes to the cornerite of (14A), (14B) and; estimate that from figure friction force at this moment (14A) single-wheel braking has increased one times nearly, should be much of that; if also need strengthen, can allow (14C) to participate in (ratchet that will [14C] among the figure with brake the plugging direction that ratchet is drawn).
The counterweight quality is big to can save energy, but can produce reverse slide, and flower wheel (14C) is used to plugging, and the realization plugging can be used two-way centrifugal speed limiter; Increasing by one pair of transmission levers again goes to finish.The trend of hoist ropes (10) is represented with fine line.
Two small generators (24) are contained in the casing outside; gear on their spindle noses (25) stretches into from the hole of casing; respectively with drive wheel (14A) and flower wheel (14B) on garden stud wheel (20) engagement; at (14A) and rotating speed (14B) not simultaneously; promptly produce voltage difference, electric current is by the electromagnetic mechanism shutdown of cutting off the electricity supply.
Accompanying drawing 3 is the cutaway view of drive wheel (14A), and ratchet (26) is arranged on the wheel rim, is the two-wheel groove below, and garden post tooth (20) is in the left side, and the right hollows out has done internally toothed annulus (27).
The utility model has been made model machine, and with the outward appearance of accompanying drawing 1, the inner structure of accompanying drawing 2 is implemented relatively good.
Claims (5)
1, a kind of anti-skidding towing machine with the lifting of friction type driving car is characterized in that being provided with flower wheel around drive wheel, has done ratchet on wheel rim, and there is braking ratchet [15] in the wheel rim outside.
2, anti-skidding according to claim 1 towing machine is characterized in that centrifugal speed limiter ［ 18 ］ is contained in a side of flower wheel, gets in touch between centrifugal speed limiter ［ 18 ］ and ratchet driving lever ［ 17 ］ with drive link ［ 21 ］.
3, anti-skidding according to claim 1 towing machine is characterized in that having two tool power generation assemblys, and they are driven by drive wheel and flower wheel respectively, and lead has connected the electromagnetic mechanism of cutting off the electricity supply.
4, anti-skidding according to claim 1 towing machine is characterized in that being equipped with a tool diff, and drive wheel and flower wheel link with its two axles respectively.
5, anti-skidding according to claim 1 towing machine, it is characterized in that having a tool casing is shell, motor-driven retarder is contained in the outside of casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93209895 CN2189143Y (en) | 1993-04-19 | 1993-04-19 | Skid-proof lifting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93209895 CN2189143Y (en) | 1993-04-19 | 1993-04-19 | Skid-proof lifting machine |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94222596 Division CN2271519Y (en) | 1994-09-30 | 1994-09-30 | Wall-mounted rail elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2189143Y true CN2189143Y (en) | 1995-02-08 |
Family
ID=33791957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93209895 Expired - Fee Related CN2189143Y (en) | 1993-04-19 | 1993-04-19 | Skid-proof lifting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2189143Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104156587A (en) * | 2014-08-04 | 2014-11-19 | 新疆大学 | Static tension ratio skid resistance checking calculation method for friction increasing system |
| CN105089264A (en) * | 2015-08-04 | 2015-11-25 | 四川建筑职业技术学院 | Magnetorheological type anti-falling and anti-toppling device of lifting scaffold |
| CN108622761A (en) * | 2018-07-06 | 2018-10-09 | 苏州福特美福电梯有限公司 | A kind of fall protection equipment of elevator |
| CN111268574A (en) * | 2020-03-06 | 2020-06-12 | 汤苏花 | Ocean engineering crane anti-falling device based on centrifugal force principle |
-
1993
- 1993-04-19 CN CN 93209895 patent/CN2189143Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104156587A (en) * | 2014-08-04 | 2014-11-19 | 新疆大学 | Static tension ratio skid resistance checking calculation method for friction increasing system |
| CN105089264A (en) * | 2015-08-04 | 2015-11-25 | 四川建筑职业技术学院 | Magnetorheological type anti-falling and anti-toppling device of lifting scaffold |
| CN108622761A (en) * | 2018-07-06 | 2018-10-09 | 苏州福特美福电梯有限公司 | A kind of fall protection equipment of elevator |
| CN111268574A (en) * | 2020-03-06 | 2020-06-12 | 汤苏花 | Ocean engineering crane anti-falling device based on centrifugal force principle |
| CN111268574B (en) * | 2020-03-06 | 2021-12-10 | 江苏博润图制造有限公司 | Ocean engineering crane anti-falling device based on centrifugal force principle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |