CN101172554B - Bidirectional safety tongs device for elevator - Google Patents
Bidirectional safety tongs device for elevator Download PDFInfo
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- CN101172554B CN101172554B CN2007100305692A CN200710030569A CN101172554B CN 101172554 B CN101172554 B CN 101172554B CN 2007100305692 A CN2007100305692 A CN 2007100305692A CN 200710030569 A CN200710030569 A CN 200710030569A CN 101172554 B CN101172554 B CN 101172554B
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- safety tongs
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Abstract
The invention discloses an elevator bilateral safety tongs device, which belongs to the elevator field. The invention is provided with a tong body, at least one gear group, and at least one eccentric wheel group, wherein, the tong body fixed at the bottom part of an elevator cage, a toothed bar with the both sides provided with teeth which is arranged in the tong body interlocks with an elevator speed limiter and can move along the vertical direction in the tong body, each gear group has two gears, the gears are symmetrically arranged on the both sides of the toothed bar and meshed with the toothed bar, each eccentric wheel group has two eccentric wheels connected with one gear in a same axle and symmetrically arranged on the both sides of an elevator guide rail. The invention has simple and compact structure, one set of device can realize safety arrestment in two directions, and the invention dose not need an additional up overspeed protective device, greatly reduces the cost of the elevator, and reduces the installation space of the additional up overspeed protective device.
Description
Technical field
The invention belongs to the elevator field, relate to a kind of safety tongs device of braking lift car, specifically a kind of car bottom of being fixed on when the upper and lower overspeed of lift car, can both actv. be clamped in the safety tongs device on the hoistway guide rail.
Background technology
Stipulate according to GB7588-2003: elevator not only will have descending overspeed protection device, also must have protection device for over-speed ascending simultaneously, and the squat end or the accident of rushing to summit take place when preventing elevator overspeed.The overspeed protection device of existing elevator generally is divided into up, descending two cover independent device, and single device can not be realized the protective effect of uplink and downlink both direction.Existing safety tongs general using voussoir moves and clamps guide rail, and single clamp can not realize that both direction clamps guide rail, and this package unit complex structure not only, also has deficiencies such as elevator cost height, waste hoistway space simultaneously.
Japanese patent laid-open 4-365772 discloses a kind of cage guide brake equipment, it is to utilize an actuating device to be transmitted in a gear reduction interlinked mechanism, this gear reduction interlinked mechanism has two power take-off shafts, this two power take-off shaft fixture block that has a contact surface that radius of curvature increases gradually that is coupling respectively, two fixture blocks are arranged symmetrically in the cage guide both sides respectively, when the lift car downstream rate is too fast, actuating device drives direction that two fixture blocks all increase gradually along radius of curvature by the gear reduction interlinked mechanism and rotates the contact surface that makes on two fixture blocks and with the side of cage guide wipe contact takes place simultaneously, increase gradually along with radius of curvature, friction force between contact surface and the cage guide side further strengthens, and reaches the purpose of stop elevator car at last.Yet it is complicated that this kind brake device structure still shows, and also can only realize the overspeed protection effect of lift car down direction.
Summary of the invention
The objective of the invention is to shortcoming and defect, provide a kind of elevator with bidirectional safety tongs device simple in structure at above-mentioned prior art.This invention is simple in structure, compact, and a covering device can be realized the safety arrestment of both direction, does not need extra protection device for over-speed ascending, has lowered the elevator cost greatly, and has reduced the installing space of extra protection device for over-speed ascending.
For achieving the above object, technical scheme of the present invention is as follows: bidirectional safety tongs device for elevator, have a caliper, and be fixed on the lift car bottom, have the toothed tooth bar in both sides in the caliper, interlock can be done the vertical direction displacement in elevator governor in caliper; At least one gear cluster, every group has two gears and is symmetricly set on the tooth bar both sides respectively and is engaged with; With at least one eccentric group, every group has two eccentric wheel and is connected, and is symmetricly set on the cage guide both sides respectively with a gear is coaxial.When lift car hypervelocity upstream or downstream, the velocity limiter action makes tooth bar do moving of vertical direction in caliper, the gear cluster that is engaged with rotates and then drives the eccentric group rotation, eccentric wheel and cage guide generation wipe contact and between the friction force that produces further strengthen along with eccentric rotation, reach the stop elevator car at last.
The present invention also has a pull bar, and it vertically runs through the caliper setting, and this pull bar interlock is in elevator governor, and described tooth bar is fixed on the pull bar by fastener.Further, end face and lower surface have the pilot hole that penetrates for pull bar on the above-mentioned caliper, and pull bar runs through and is arranged in this two pilot hole, can prevent that pull bar is offset in the horizontal direction.
Can be provided with support in the above-mentioned caliper, above-mentioned axle two ends are fixed on caliper and the support by axle sleeve respectively.
Simple and compact structure of the present invention; effectively utilize the elevator installing space; all parts are installed in the safety tongs caliper; utilize the gear of rack drives both sides to rotate; thereby make the eccentric wheel of guide rail both sides clamp guide rail simultaneously; by eccentric rotating, can clamp guide rail when realizing the uplink and downlink hypervelocity, and economize extra protection device for over-speed ascending.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1 described bidirectional safety tongs device for elevator;
Fig. 2 is the birds-eye view of Fig. 1;
Fig. 3 is the lateral plan of Fig. 1;
Fig. 4 is the structural representation that the descending when hypervelocity the present invention of elevator clamps guide rail;
The present invention clamped the structural representation of guide rail when Fig. 5 was the ascending for elevator hypervelocity;
Fig. 6 is the structural representation of the embodiment of the invention 2;
Fig. 7 is the structural representation of the embodiment of the invention 3.
Now the invention will be further described in conjunction with the accompanying drawings and embodiments:
The specific embodiment
As shown in Figure 1 to Figure 3, the described bidirectional safety tongs device for elevator of present embodiment mainly is made up of caliper 1, tooth bar 2, two gears 3, two eccentric wheel 4, two axles 5, support 6 and pull bars 8.
During normal mounting of the present invention, two eccentric wheel 4 are arranged symmetrically in the guide rail two sides, and the minimum edge of eccentric wheel 4 is near guide rail, and reserve certain safety distance.And according to the distance of pull bar 8 upper and lower vertical shifting, the caliper planted agent reserves available space for tooth bar 2 upper and lower vertical shifting.
As shown in Figure 4, when the operation downwards of lift car hypervelocity, the velocity limiter action, the pulling force of speed limiter wire rope makes safe pulling apparatus action.Because pull bar 8 is to be connected with the safety pulling apparatus, therefore pull bar 8 vertically moves up under the drive of safety pulling apparatus, and then it is also mobile vertically upward to drive tooth bar, be rotated in the forward contrarotation respectively with tooth bar ingear two gears, also be rotated in the forward contrarotation respectively with the coaxial eccentric wheel that is fastenedly connected of gear, when eccentric wheel 4 rotates to certain angle α, eccentric wheel 4 and guide pass generation wipe contact, and then under the effect of friction force between eccentric wheel 4 and the guide rail 7, drive eccentric wheel 4 and continue rotation, friction force increases rapidly thereupon, and two eccentric wheel more and more clamp guide rail, finally utilizes friction force to make the lift car stop on guide rail 7.
As shown in Figure 5, when the lift car hypervelocity is upwards moved, the velocity limiter action, the pulling force of speed limiter wire rope makes safe pulling apparatus action.Because pull bar 8 is to be connected with the safety pulling apparatus, therefore pull bar 8 vertically moves down under the drive of safety pulling apparatus, and then it is also mobile vertically downward to drive tooth bar, be rotated in the forward contrarotation respectively with tooth bar ingear two gears, also be rotated in the forward contrarotation respectively with the coaxial eccentric wheel that is fastenedly connected of gear, when eccentric wheel 4 rotates to certain angle α, eccentric wheel 4 and guide pass generation wipe contact, and then under the effect of friction force between eccentric wheel 4 and the guide rail 7, drive eccentric wheel 4 and continue rotation, friction force increases rapidly thereupon, and two eccentric wheel more and more clamp guide rail, finally utilizes friction force to make the lift car stop on guide rail 7.
As shown in Figure 6, when lift car weight is big, can increase friction force, so that stop elevator car effectively by the quantity that increases gear cluster and eccentric group.The gear cluster of present embodiment and the quantity of eccentric group are two, and other structure and implementation result are with embodiment 1.
As shown in Figure 7, when the lift car command speed is big,,,, control the elevator stopping deceleration/decel as dish spring, U type spring etc. by increase elastic element 12 in brake eccentric 4 both sides for avoiding the stop deceleration/decel excessive.Other structure and implementation result are with embodiment 1.
Claims (6)
1. bidirectional safety tongs device for elevator is characterized in that, has a caliper, is fixed on the lift car bottom, has in the caliper
The toothed tooth bar in one both sides, interlock can be done the vertical direction displacement in elevator governor in caliper;
At least one gear cluster, every group has two gears and is symmetricly set on the tooth bar both sides respectively and is engaged with; With
At least one eccentric group, every group has two eccentric wheel and respectively with one described gear is coaxial is connected, and is symmetricly set on the cage guide both sides;
One pull bar is arranged, vertically run through the caliper setting, this pull bar interlock is in elevator governor, and described tooth bar is fixed on the pull bar by fastener.
2. bidirectional safety tongs device for elevator according to claim 1 is characterized in that, end face and lower surface have the pilot hole that penetrates for pull bar on the described caliper.
3. bidirectional safety tongs device for elevator according to claim 1 and 2 is characterized in that, is provided with support in the described caliper, and described axle two ends are fixed on caliper and the support by axle sleeve respectively.
4. bidirectional safety tongs device for elevator according to claim 1 is characterized in that, described each eccentric group both sides are provided with the elastic element in order to control elevator stopping speed.
5. bidirectional safety tongs device for elevator according to claim 1 is characterized in that, described caliper is the rigidity foundry goods.
6. bidirectional safety tongs device for elevator according to claim 1 is characterized in that, described rack and pinion is a moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100305692A CN101172554B (en) | 2007-09-27 | 2007-09-27 | Bidirectional safety tongs device for elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100305692A CN101172554B (en) | 2007-09-27 | 2007-09-27 | Bidirectional safety tongs device for elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101172554A CN101172554A (en) | 2008-05-07 |
| CN101172554B true CN101172554B (en) | 2011-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100305692A Active CN101172554B (en) | 2007-09-27 | 2007-09-27 | Bidirectional safety tongs device for elevator |
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| CN (1) | CN101172554B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113860113A (en) * | 2021-08-30 | 2021-12-31 | 伟龙意程智能科技(江苏)有限公司 | Eccentric wheel type safety tongs structure for elevator |
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| CN102176530B (en) * | 2011-01-10 | 2013-12-11 | 圆刚科技股份有限公司 | Antenna device |
| CN102674175B (en) * | 2012-05-18 | 2014-02-05 | 上海工程技术大学 | Self-adaptive crane auto-locked by gravity |
| CN104649095B (en) * | 2014-12-29 | 2016-10-05 | 龚柱 | The method for designing of elevator |
| CN104477726B (en) * | 2014-12-29 | 2016-10-05 | 龚柱 | The method for designing of the anti-fall unit of elevator |
| CN106241550B (en) * | 2016-09-27 | 2018-05-15 | 黄韩华 | A kind of contact accidental movement of elevator cage protective device |
| CN106744144B (en) * | 2016-12-27 | 2019-05-14 | 廖忠民 | Lifting device electromagnetic propulsion rack-and-pinion safety catch |
| CN106744138B (en) * | 2016-12-27 | 2019-03-12 | 廖忠民 | Rack-and-pinion lifting device levels electromagnetic pushes safety catch |
| CN107032252B (en) * | 2016-12-27 | 2018-11-23 | 廖忠民 | Pinion and-rack lifting device levels electromagnetic pulls safety catch |
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| CN107032251B (en) * | 2016-12-27 | 2018-12-18 | 廖忠民 | Rack-and-pinion lifting device horizontal safety catch |
| CN106744192B (en) * | 2016-12-27 | 2018-11-02 | 廖忠民 | A kind of safety catch of pinion and-rack lifting device |
| CN106744143B (en) * | 2016-12-27 | 2019-01-18 | 廖忠民 | Lifting device electromagnetic lever leveling controls safety catch |
| CN107416638A (en) * | 2017-09-19 | 2017-12-01 | 西继迅达（许昌）电梯有限公司 | A kind of lift brake safety clamp |
| CN108821054B (en) * | 2018-08-27 | 2024-03-19 | 博众精工科技股份有限公司 | Car anti-falling device and car lifting system |
| CN109911739B (en) * | 2019-03-18 | 2024-02-09 | 杭州优迈科技有限公司 | Bidirectional safety tongs for elevator and elevator |
| CN110329716A (en) * | 2019-08-02 | 2019-10-15 | 安徽龙磁精密器件有限公司 | A kind of Pneumatic clamping manipulator |
| CN110872043A (en) * | 2019-11-26 | 2020-03-10 | 天津京龙工程机械有限公司 | Cage structure for elevator |
| CN111977487B (en) * | 2020-07-16 | 2021-11-30 | 苏州东方富力电梯部件有限公司 | Bidirectional progressive braking safety tongs |
| CN113044743B (en) * | 2021-03-10 | 2022-06-17 | 内蒙古维维能源有限公司 | Winch and pedestrian safety power-off locking alarm method thereof |
| CN113277452B (en) * | 2021-06-17 | 2022-06-03 | 山西科森电力有限公司 | Boiler maintenance device for thermal power plant |
| CN113716481A (en) * | 2021-07-14 | 2021-11-30 | 莱芜职业技术学院 | Novel track safety brake device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2192057B1 (en) * | 1972-07-10 | 1976-01-16 | Commissariat A En Atomique Fr | |
| CN2589442Y (en) * | 2002-06-05 | 2003-12-03 | 来国根 | Safety catch for shape frame |
-
2007
- 2007-09-27 CN CN2007100305692A patent/CN101172554B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2192057B1 (en) * | 1972-07-10 | 1976-01-16 | Commissariat A En Atomique Fr | |
| CN2589442Y (en) * | 2002-06-05 | 2003-12-03 | 来国根 | Safety catch for shape frame |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113860113A (en) * | 2021-08-30 | 2021-12-31 | 伟龙意程智能科技(江苏)有限公司 | Eccentric wheel type safety tongs structure for elevator |
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| CN101172554A (en) | 2008-05-07 |
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