CN2175213Y - Overhead railway hoisting machine - Google Patents
Overhead railway hoisting machine Download PDFInfo
- Publication number
- CN2175213Y CN2175213Y CN 92236545 CN92236545U CN2175213Y CN 2175213 Y CN2175213 Y CN 2175213Y CN 92236545 CN92236545 CN 92236545 CN 92236545 U CN92236545 U CN 92236545U CN 2175213 Y CN2175213 Y CN 2175213Y
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- CN
- China
- Prior art keywords
- ratchet
- wheel
- hoisting machine
- drive
- pulley
- 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 hoisting machine of an elevator. The number of pulley wheels used by the hoisting machine is large, and the general wrapping angle of hoist ropes to the pulley wheels reaches 400 DEG and above; pawl brake mechanisms and ratchets are arranged on the rims of the pulley wheels; a motor speed reducer drives one of the pulley wheels, and the rest pulley wheels are driven wheels; when the lowering speed of a cage exceeds the prescribed value, a centrifugal speed limiter on the hoisting machine begins to act to cause the pawl to brake all the pulley wheels through the transmission of a rod; the frictional force on the hoist ropes increases in multiples to hover the cage; a mechanism is also arranged for preventing that the driving pulley wheel rotates, the cage does not move, and the hoist ropes are frayed.
Description
The actuating device that present many elevators use is winch, electric block, though the safety facilities on the elevator that has are fairly perfect, the end user still worries, is afraid of that crown, disconnected rope fall, because often there is this incident to give birth to.Crown, disconnected rope are the major defects of forcing driving.By contrast, the friction traction drives and does not just have this problem basically.
Traction drives and to be better than forcing to drive by common recognition, and national corresponding management mechanism once required to drive with traction and replaces and transform the elevator of forcing drive-type, but in the past few years, this work progress is little.Major cause is that the comformability of present towing machine and its drop preventer is wideless.
Task of the present invention provides a kind of complete function, easy for installation, and is in light weight, can hang, and the towing machine of speed limiting mechanism and the anti-wearing and tearing hoist ropes mechanism of sliding is arranged, and is used on the man-engine of indoor and outdoor.
Invention realizes by following step:
Wear three (or several) axle parallel to each other in the casing that a prodigiosin is draped, adorn pulley on the every axle, all have the race of some on the pulley, allow on the car steel rope of respective numbers have and sequentially walk around race, external part then hangs counterweight.Pulley in succession transmission gear, ratchet.As on pulley, doing internally toothed annulus and cylindrical wheel, do ratchet on the wheel rim, be equipped with using pawl to brake mechanism.
One tool is contained in a side of casing by the retarder (generally being worm-gear type) of driven by motor, certain pulley in drive pulley such as the drive case, the pulley that is driven is a drive wheel, all the other pulleys are flower wheel, when ratchet was not on the position at brake ratchet, the motor forward and backward on the retarder can be carried out lifting to car, counterweight.
Gear on the output shaft of retarder can stretch in the casing from the hole of casing shell, connects engaged transmission in constituting with internally toothed annulus on the pulley.
Change the ratchet on the wheel rim of pulley into cylindrical wheel, make the interior pulley of casing be mounted to the external engagement of cylinder tooth, become multiple-wheel drive.Brake ratchet is contained on the sheave shaft, and the moving ratchet of preparation reaches behind pulley of braking all pulleys and braked.
With mechanical transmission mechanism the rotating speed of drive wheel and flower wheel is drawn, by the processing mechanism of rotating speed relatively, when making the difference of two rotating speeds reach certain value, actuating signal takes place promptly, the shutdown of going to cut off the electricity supply is in order to avoid the skimming wear of hoist ropes in drive wheel groove.
On the towing machine casing, adorn the modified roll mechanism of similar automobile back wheel transmission principle.The rotating speed of flower wheel and drive wheel is introduced modified roll mechanism, and when two rotating speeds were inequality, third axle just rotated.One tool centrifugal speed limiter and third axle are kept interaction relation.When the rotating speed on third axle reaches certain value, the action that velocity limiter is promptly cut off the electricity supply and shut down.
On towing machine, adorn two small generators; make their axle rotating speed be respectively the ratio rotating speed of drive wheel and flower wheel, driven is in service, is two power supplys that difference is very little; when hoist ropes slides, voltage difference, electric current are promptly arranged through the electromagnetic mechanism shutdown of cutting off the electricity supply in the drive wheel race.
Adorn a tool centrifugal speed limiter on the casing of towing machine, making its rotating speed is the ratio rotating speed of flower wheel, and when car descending speed overshoot value, velocity limiter promptly moves, and makes the using pawl to brake ratchet through the rod member transmission.If quality is during greater than the super specified value of descending speed of the counterweight of car, the velocity limiter with two-way speed limiting function moves, and makes the using pawl to brake ratchet by drive link.Shutdown takes place promptly to cut off the electricity supply in action.
Dress packaged reducer structure and dish on casing, the rotating speed and the secondary speed of speed reduction gearing axle are proportional, gear on its input shaft and the garden stud wheel engagement on the flower wheel, the revolution that constitutes output shaft is corresponding with car position, and the cam on the axle is stirred the electric leveling switch on the dish.
The advantage of this towing machine is that function is complete, during driving, traction is difficult for sliding, the reliability height of limiting brake, in light weight, easy for installation, should be no less than 2 requirement according to the hoisting rope of the passenger cage that proposes in country's existing " elevator manufacturing and installation specification ", be man-engine's desirable traction actuating device, shortcoming be hoist ropes around folding more, the weak point in service life of correspondingly restricting uses on the frequent elevator that uses, and pulley can not be little.
Below in conjunction with accompanying drawing Overhead railway hoisting machine is further described:
Accompanying drawing 1 is the External view of Overhead railway hoisting 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 driving rope ［ 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 Overhead railway hoisting machine, in casing ［ 13 ］ lining, the pulley of having done ratchet on three wheel rims is arranged, ［ 14A ］ is 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 plate) outside, be through as the hole on the lever rocking arm ［ 21 ］ of three forks 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 y-bends 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; wherein " α " in the index be the cornerite of hoist ropes to pulley; after flower wheel ［ 14B ］ is braked; the value of " α " 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 the rotating speed of ［ 14A ］ and ［ 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 ］.
Claims (7)
1, a kind of friction drive device-Overhead railway hoisting machine of elevator, it is characterized in that flower wheel (14B, 14C) is arranged around drive wheel (14A), increased the cornerite of hoisting rope to wheel, connected ratchet on drive wheel and the flower wheel, be provided with the centrifugal speed limiter (18) of using pawl to brake mechanism and the action of control ratchet, be connected drive link (21) between ratchet (15) and the centrifugal speed limiter (18), when car speed overshoot value, centrifugal speed limiter moves, make ratchet and ratchet engagement by drive link, braking drive wheel and flower wheel.
2, Overhead railway hoisting machine according to claim 1, it is characterized in that described using pawl to brake mechanism is made up of ratchet (15), sour jujube spring (16) and ratchet driving lever (17) and axle, in succession of drive link (21) of extension spring (23), its pulling force pushes away ratchet driving lever (17) by drive link (21) makes ratchet (15) separate with ratchet.
3, Overhead railway hoisting machine according to claim 1, it is characterized in that described centrifugal speed limiter (18), gear (20) engagement on gear on its spindle nose (19) and the pulley, actuating mechanism links to each other with drive link (21), during hypervelocity, the action that centrifugal speed limiter takes place has overcome the pulling force of the extension spring (23) of being born on the drive link (21), and drive link and ratchet driving lever (17) are disengaged, sour jujube spring (16) pushes away ratchet and ratchet engagement, brake sheave.
4, Overhead railway hoisting machine is characterized in that the ratchet of drive wheel and flower wheel is to do on wheel rim according to claim 1.
5, Overhead railway hoisting machine according to claim 1 is characterized in that having on the drive wheel internally toothed annulus (27).
6, Overhead railway hoisting machine according to claim 1 is characterized in that being equipped with on the machine device of comparison drive wheel rotating speed and secondary speed difference.
7,, it is characterized in that the described relatively device of speed discrepancy is power generation assembly (24), gear (20) engagement on the gear on its spindle nose (25) and the pulley as Overhead railway hoisting machine as described in the claim 1,6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92236545 CN2175213Y (en) | 1992-10-12 | 1992-10-12 | Overhead railway hoisting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92236545 CN2175213Y (en) | 1992-10-12 | 1992-10-12 | Overhead railway hoisting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2175213Y true CN2175213Y (en) | 1994-08-24 |
Family
ID=33778052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92236545 Expired - Fee Related CN2175213Y (en) | 1992-10-12 | 1992-10-12 | Overhead railway hoisting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2175213Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815586A (en) * | 2012-08-27 | 2012-12-12 | 江苏申锡建筑机械有限公司 | Pawl protection device |
| CN110980485A (en) * | 2019-12-19 | 2020-04-10 | 苏州泰恒机电部件有限公司 | Residential area elevator and intelligent control system thereof |
-
1992
- 1992-10-12 CN CN 92236545 patent/CN2175213Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815586A (en) * | 2012-08-27 | 2012-12-12 | 江苏申锡建筑机械有限公司 | Pawl protection device |
| CN102815586B (en) * | 2012-08-27 | 2016-08-31 | 江苏申锡建筑机械有限公司 | A kind of Pawl protection device |
| CN110980485A (en) * | 2019-12-19 | 2020-04-10 | 苏州泰恒机电部件有限公司 | Residential area elevator and intelligent control system thereof |
| CN110980485B (en) * | 2019-12-19 | 2021-02-19 | 苏州泰恒机电部件有限公司 | Residential area elevator and intelligent control system thereof |
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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 |