CN2079613U - Safety device of pinion-and-rack type lifter for construction lift - Google Patents
Safety device of pinion-and-rack type lifter for construction lift Download PDFInfo
- Publication number
- CN2079613U CN2079613U CN 90201188 CN90201188U CN2079613U CN 2079613 U CN2079613 U CN 2079613U CN 90201188 CN90201188 CN 90201188 CN 90201188 U CN90201188 U CN 90201188U CN 2079613 U CN2079613 U CN 2079613U
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- CN
- China
- Prior art keywords
- centrifugal
- safety device
- rack type
- screw rod
- utility
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- 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 - Lifetime
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- Cage And Drive Apparatuses For Elevators (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The utility model relates to a safety device of pinion-and-rack type for construction lifter, which belongs to safety part in the passenger and freight lifter of construction machine. The safety device is characterized in using a tower type section-variable spring as a motivating element. The tail part is provided with a top floating screw rod. The front end of the spreading position of the centrifugal block is provided with a disengagement preventing spring tab and a registering mast, which can realize the reliability of the braking and stop of the cage. The advantages of the utility model are that compared with the similar safety devices, the utility model does not disengage after the cage brakes and stops, the motivating speed is stable, the motivating element is not easily fatigue and the braking disc can conduct self-test without opening the outer shell, moreover, the reset is thorough and the engagement of the centrifugal block is not impacted, therefore, the working reliability is improved.
Description
The safety device of the utility model gear rack type construction elevator belongs to the safety component in the passenger-cargo elevator in the what vehicle for construction, is suitable for the various types of gear rack type construction elevators of what.
The safety device of existing gear rack type construction elevator generally is made up of speed limiting gear wheel shaft, centrifugal, inner cone, Outer Taper, centrifugal parts such as spring.Its principle of work is: when car falls, speed limiting gear wheel shaft rotating speed under the tooth bar effect is accelerated gradually, be fixed on the speed limiting gear wheel shaft centrifugal under action of centrifugal force, overcome centrifugal spring force, outwards open the end, in the engaging-in inner cone groove and drive one and play rotation, the screw rod of inner cone end is under nut, nut guide plate and the effect of butterfly spring group, the inside and outside conical surface is compressed gradually,, play the generation that prevents the car falling accident until the stop car.The deficiency that this safety device of knowing altogether exists is:
1. at the Outer Taper afterbody after the floating screw rod in top is adjusted initial lock torque on demand, inside and outside cone contact surface compresses, and impacts big during centrifugal engaging-in inner cone teeth groove.
2. centrifugal anti-spring leaf out of supply and registration mast reach when opening speed when centrifugal, though open to inner cone teeth groove direction its end, might get back to original position again under inner cone teeth groove bump.This not only damages inner cone and centrifugal easily, and makes braking not steady, or causes repeatedly braking, and reliability reduces.
3. a centrifugal spring is the uniform cross section extension spring, job insecurity, and fatiguability, and when car often occurring and normally moving, centrifugal action, causing should not the glancing impact braking, influences the complete machine normal operation.
The purpose of this utility model can not opened shell at what to centrifugal functional reliability in the safety device of gear rack type construction elevator and stationarity and brake plate wearing and tearing can self check, innovates.Provide a kind of centrifugal action accurately, impacts little, working stability, reliably, the safety device of the gear rack type construction elevator that the rear defence that performs is out of supply.
The utility model is realized by following technical measures: promptly add the floating screw rod in a top at afterbody; Add an anti-spring leaf out of supply and a registration mast centrifugal flared end; Adopt the tower stage clip of variable section to replace old-fashioned uniform cross section extension spring, thereby realize reliable operation, action accurately nothing is impacted.
Below the utility model is described in further detail.
A kind of gear rack type construction safeguard device of elevator of forming by speed limiting gear wheel shaft, centrifugal, inside and outside cone etc., its feature is as follows:
Feature 1 is equipped with the floating screw rod in a top at the Outer Taper afterbody.
Feature 2 is provided with anti-spring leaf out of supply and anti-registration mast out of supply centrifugal flared end.
Feature 3, the spring of controlling centrifugal action are the tower stage clip of a variable section.
Be described in further detail below in conjunction with the structure and the characteristics of accompanying drawing the utility model gear rack type construction safeguard device of elevator.
Fig. 1 is the overall structure scheme drawing of gear rack type construction safeguard device of elevator
Fig. 2 is the excitation mechanism scheme drawing in the gear rack type construction safeguard device of elevator
Fig. 3 is the top float means scheme drawing in the gear rack type construction safeguard device of elevator
As shown in Figure 1, speed limiting gear wheel shaft 8 is when cage operation, on elevator guide rails frame tooth bar, rotate, the centrifugal block 2 that connects on the speed limiting gear wheel shaft 8, also together rotate for centrifugal 1, centrifugal 1 outside is an inner cone 7 with 5 interior double wedges, when car falls, centrifugal 1 power that overcomes centrifugal spring 3, outwards open the end, and in the groove of engaging-in inner cone 7, inner cone 7 together rotates with speed limiting gear wheel shaft 8, and the floating screw rod 12 in the top that drives Outer Taper 6 afterbodys rotates, after turning over certain angle, the floating screw rod 12 in top withdraws from, and the screw rod of inner cone 7 afterbodys is rotated further, the feasible nut 17 that does not rotate, nut guide plate 18 moves inwards, loads for dish spring group 5 gradually, forces inner cone 7 and Outer Taper 6 further to compress, lock torque on the speed limiting gear wheel shaft 8 increases gradually thus, and car just passes through speed limiting gear wheel shaft 8 stops on the guide rail bracket tooth bar.
Centrifugal block 2(sees Fig. 2) go up on the fixing spring leaf 10 registration mast 9 is housed, when centrifugal is rotated hypervelocity with speed limiting gear wheel shaft 8, centrifugal 1 spring force that overcomes centrifugal spring 3, outwards open centrifugal 1 end, when reaching retro-speed, registration mast 9 blocks making it for centrifugal 1 return is out of supply voluntarily under spring leaf 10 effect.
For preventing elevator drives system and safety device mutual interference mutually, nut 17(sees Fig. 3 when inner cone 7 afterbody screw rods rotate) load inwards when mobile, be fixed on the nut guide plate 18 compressing travel switches on the nut 17, thereby cut off main circuit power.
At Outer Taper 6 afterbodys the floating screw rod 12(in top is housed and sees Fig. 3), the floating screw rod 12 in top can be ejecting the gap between Outer Taper 6 and inner cone 7, the brake plate 19, when centrifugal 1 engaging-in inner cone 7 teeth groove of flared end drive inner cone 7 rotations simultaneously, also drive floating screw rod 12 rotations in top, thereby the floating screw rod 12 in top rotates to an angle and withdraws from interior Outer Taper and eliminate the gap, recovers original initial lock torque, inner cone 7 centrifugal 1 drive under, be further rotated, lock torque further increases, until the stop car.
As shown in Figure 3, be the idle travel amount by the floating anglec of rotation (because of pitch is standard value) of screw rod 12 before the screw rod axle head that does not push up inner cone 7 afterbodys in rotation top, can be under the situation of not opening shell the wear pattern of check stop sheet 19.
Resetting of safety device action, at first check car stop reason, after getting rid of the fault that causes of falling, disconnect main power source, adjust (see figure 3) as follows: screw out screw 14, take away bonnet 15, take out screw 16, it is concordant with Outer Taper 6 shell end faces until the afterbody of locating dowel pin 4 to screw out nut 17 with instrument.Mounting screw 16 and bonnet 15 take off case 11, rotate the floating screw rod 12 in top by hand, wear pattern by idle travel anglec of rotation size check stop sheet 19, to push up floating screw rod 12 with hand then and tighten, will push up floating screw rod 12 with instrument again and tighten 30 degree angles, load onto case 11.
Connect main power source, must start up 200 millimeter of car, so that throw off with inner cone 7 teeth groove and to reset for centrifugal 1.
The utility model has the advantage of:
Centrifugal-block performs and do not have to impact, excitation rate accurate stable, centrifugal-block perform reliable eliminate automatically out of supply.
Claims (3)
1, a kind of safety device of the gear rack type construction elevator of being made up of inner cone 7, Outer Taper 6, speed limiting gear wheel shaft 8, butterfly spring group 5, the floating screw rod 12 in top, centrifugal 1, centrifugal spring 3 etc., it is characterized in that: the safety device afterbody is equipped with the floating screw rod 12 in top, nut 13, bonnet 15 and cover cap 11 are floated in the top.
2, the safety device of gear rack type construction elevator according to claim 1 is characterized in that centrifugal spring 3 is tower variable section stage clips.
3, the safety device of gear rack type construction elevator according to claim 1 is characterized in that centrifugal 1 flared end has an anti-spring leaf 10 out of supply and a registration mast 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90201188 CN2079613U (en) | 1990-02-05 | 1990-02-05 | Safety device of pinion-and-rack type lifter for construction lift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90201188 CN2079613U (en) | 1990-02-05 | 1990-02-05 | Safety device of pinion-and-rack type lifter for construction lift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2079613U true CN2079613U (en) | 1991-06-26 |
Family
ID=4882857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90201188 Expired - Lifetime CN2079613U (en) | 1990-02-05 | 1990-02-05 | Safety device of pinion-and-rack type lifter for construction lift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2079613U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303801A (en) * | 2010-12-16 | 2012-01-04 | 上海市建筑科学研究院(集团)有限公司 | Super low speed anti-falling safety device |
| CN104370235A (en) * | 2014-10-31 | 2015-02-25 | 芜湖三六机械有限公司 | Speed limiting action device |
| CN106639447A (en) * | 2016-12-31 | 2017-05-10 | 郑俭余 | Lifting anti-falling device |
| CN110093476A (en) * | 2019-06-18 | 2019-08-06 | 潍坊峻林冶金工程技术有限公司 | A kind of converter oxygen gun lift cart falling-proof safety device |
-
1990
- 1990-02-05 CN CN 90201188 patent/CN2079613U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303801A (en) * | 2010-12-16 | 2012-01-04 | 上海市建筑科学研究院(集团)有限公司 | Super low speed anti-falling safety device |
| CN102303801B (en) * | 2010-12-16 | 2014-04-30 | 上海市建筑科学研究院(集团)有限公司 | Super low speed anti-falling safety device |
| CN104370235A (en) * | 2014-10-31 | 2015-02-25 | 芜湖三六机械有限公司 | Speed limiting action device |
| CN106639447A (en) * | 2016-12-31 | 2017-05-10 | 郑俭余 | Lifting anti-falling device |
| CN106639447B (en) * | 2016-12-31 | 2023-11-03 | 金华市西比特立体车库有限公司 | Lifting anti-falling device |
| CN110093476A (en) * | 2019-06-18 | 2019-08-06 | 潍坊峻林冶金工程技术有限公司 | A kind of converter oxygen gun lift cart falling-proof safety device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |