CN106219351B - a kind of bidirectional safety tongs - Google Patents
a kind of bidirectional safety tongs Download PDFInfo
- Publication number
- CN106219351B CN106219351B CN201610776703.2A CN201610776703A CN106219351B CN 106219351 B CN106219351 B CN 106219351B CN 201610776703 A CN201610776703 A CN 201610776703A CN 106219351 B CN106219351 B CN 106219351B
- Authority
- CN
- China
- Prior art keywords
- wedge
- caliper
- safety tongs
- hyposphene
- holder
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
- B66B5/22—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of linearly-movable wedges
Abstract
The present invention relates to a kind of bidirectional safety tongs, it include the holder with guide-track groove, it is separately mounted to the flat pliers body and wedge caliper group of support guide slot both sides, and the dual-wedge for being slidably mounted on holder and coordinating with the wedge caliper group, wedge caliper group includes the upper wedge caliper being arranged symmetrically and hyposphene caliper, correspondingly set on dual-wedge there are two respectively with it is upper, the matched guiding wedge surface of hyposphene caliper, on, hyposphene caliper is connected by interlocking bar, there are two the clamper wedge surfaces being arranged symmetrically for flat pliers body tool, and it is connect with the holder pivots by pivot, wherein a wedge caliper connects the pivot by transmission mechanism, wedge caliper sliding drives the rotation of flat pliers body when braking, so that the clamper wedge surface is close to guide rail, the resetting-mechanism for acting on wedge caliper and acting on pivot by transmission mechanism is additionally provided on holder.The bidirectional safety tongs realize bi-directional braking, play to guide rail and protect to greatest extent, while car has better comfort when safety tongs action.
Description
Technical field
The present invention relates to dynamic apparatus for lift fields, and in particular to a kind of bidirectional safety tongs.
Background technology
Conventional safety tongs currently on the market, is installed on lift car or counterweight, longitudinal to be equipped with guide-track groove, side or
Both sides are equipped with voussoir.When lift car is in normal operating condition, certain spacing is kept between voussoir and guide rail.
When car upstream or downstream speed reaches certain upper limit speed, limiter of speed holds governor rope, governor rope band
The shift mechanism of dynamic safety tongs, shift mechanism lift movable wedge upward or downward so that between movable wedge and guide rail
Gap disappears, and frictional force is generated after movable wedge and guide rail contact and continues to drive movable wedge movement, makes on safety tongs across leading
Rail and movable wedge are relatively fixed voussoir contact guide rail, and fixed voussoir applies displacement load to disc spring, and disc spring generates brake force,
So that voussoir is firmly held guide rail tightly, makes car stop.
Safety tongs in the prior art, although car generates lateral displacement when can prevent safety tongs from working or guide rail becomes
Shape, but bi-directional braking cannot be realized simultaneously, the safety tongs that multiple and different directions are set is needed in actual use, does not only take up sky
Between and it is complicated.
Invention content
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of bidirectional safety tongs, bi-directional braking is realized,
Guide rail is played and is protected to greatest extent, while car has better comfort when safety tongs action.
Technical solution provided by the present invention is：
A kind of bidirectional safety tongs include the holder with guide-track groove, be separately mounted to support guide slot both sides flat pliers body and
Wedge caliper group, and the dual-wedge that is slidably mounted on holder and coordinates with the wedge caliper group, the wedge caliper group include pair
The upper wedge caliper and hyposphene caliper for claiming arrangement, correspondingly set on the dual-wedge there are two being matched respectively with upper and lower wedge caliper
Guiding wedge surface, the upper and lower wedge caliper connected by interlocking bar, and there are two the clamper wedges being arranged symmetrically for the flat pliers body tool
Face, and being connect with the holder pivots by pivot, wherein a wedge caliper connects the pivot by transmission mechanism, when braking, should
The sliding of wedge caliper drives the flat pliers body rotation so that the clamper wedge surface is close to guide rail, is additionally provided with and acts on the holder
Wedge caliper and the resetting-mechanism that pivot is acted on by transmission mechanism.
In above-mentioned technical proposal, when car upstream or downstream speed reaches upper limit speed, limiter of speed pulls governor rope,
Governor rope then lifts the trigger mechanism of bidirectional safety tongs upward or downward.The trigger mechanism can be upper wedge caliper and/or
Hyposphene caliper.The matching used limiter of speed can be bidirectional speed limiter.
With wedge caliper in upward lifting, for upper wedge caliper connects pivot by transmission mechanism, since upper wedge caliper is under
It is equipped with interlocking bar between wedge caliper, hyposphene caliper can be driven when wedge caliper in lifting, and hyposphene caliper then can be along matched
Guiding wedge surface be slid onto working position, side and rail friction, the other side will squeeze dual-wedge under the reaction force of guide rail.
It can be driven and be pivoted by transmission mechanism when upper wedge caliper movement simultaneously, while flat pliers body being driven to rotate so that clamper wedge surface
It is close to guide rail, guide rail is firmly held tightly eventually by hyposphene caliper peace caliper, makes car stop.
The resetting-mechanism when shift mechanism removes the lifting active force to wedge caliper, will make upper wedge caliper or under
Wedge caliper is detached from guide rail, and it is made to return to original state so that bidirectional safety tongs shed brake force.
Preferably, the bidirectional safety tongs include limiting wedge caliper along the Guiding machine moved with the guiding wedge surface respectively coordinated
Structure.
Preferably, the guiding mechanism includes the cover board of wedge caliper of reclining, and the wedge caliper is equipped with along respective sliding side
To the sliding slot of arrangement, the cover board edge has the flanging of the embedded sliding slot.When shift mechanism lifts wedge pincers upward or downward
When body so that upper wedge caliper and hyposphene caliper are slided along the scheduled stroke of sliding slot.It was slided in upper wedge caliper and hyposphene caliper
Cheng Zhong so that the compressive plane of the two is contacted with the guiding wedge surface of the both sides up and down of dual-wedge always, can effectively squeeze folding wedge
Block.
Preferably, the resetting-mechanism includes the connecting rod for connecting wedge caliper and the guide rod that is fixed on holder, connecting rod from
By being set on guide rod after the bending of end, using the position worn as separation, reset is respectively arranged on the guide rod of the separation both sides
Spring.
Preferably, the guide rod is equipped with the locating part for limiting connecting rod bending part sliding stroke.Locating part passes through the company of limitation
The sliding stroke of bar bending part limits the sliding stroke of upper wedge caliper.
Preferably, the transmission mechanism includes rack and the gear that coordinates with rack, and the pivot is the wheel of gear
Axis, the rack connect the connecting rod by linkage mechanism.When shift mechanism lifts wedge caliper upward or downward, wedge caliper meeting
Drive connecting rod and linkage mechanism so that rack drives gear rotates.The linkage mechanism can be the bindiny mechanisms such as drive link,
For connecting connecting rod and rack so that can be mobile simultaneously by drive link band carry-over bar when connecting rod moves.
Preferably, needle roller components are equipped between the wedge caliper group and dual-wedge.The needle roller components include needle roller frame
And needle roller.Upper and lower two needle roller components are connected by tension spring, and the upper end of upper needle roller components is connected by tension spring with resetting-mechanism.On
When wedge caliper and hyposphene caliper are slided along scheduled stroke, needle roller components can reduce upper wedge caliper and hyposphene caliper and folding wedge
Frictional force between block.
Preferably, the holder is equipped with the groove coordinated with dual-wedge, and sliding is equipped between groove both sides and dual-wedge
Mechanism, dual-wedge back between the side and groove inner wall of wedge caliper group be equipped with disk spring.The sliding equipment includes holder
The guide groove of upper groove two side and convex block with the matched dual-wedge both sides of guide groove.When resetting-mechanism so that upper wedge clamps
Body or hyposphene caliper are detached from guide rail, and when it being made to return to original state, and disk spring just pushes dual-wedge to make its recovery simultaneously
Inoperative position, inoperative position refer between dual-wedge and upper wedge caliper or hyposphene caliper without squeezing action power.
Compared with the existing technology, beneficial effects of the present invention are embodied in：
(1) present invention passes through the improvement in structure so that bidirectional safety tongs can prevent car from generating lateral position when working
It moves or guide rail deforms.
(2) present invention is arranged by the linkage between upper wedge caliper and hyposphene caliper so that and safety tongs realizes bi-directional braking,
Have to guide rail and protect to greatest extent, further improves the comfort of car.
(3) resetting-mechanism in the present invention, can be timely that bidirectional safety tongs are extensive after bidirectional safety tongs end of braking
Off working state is arrived again so that elevator can be with normal operation.
Description of the drawings
Fig. 1 is the structural schematic diagram of bidirectional safety tongs in the embodiment of the present invention；
Fig. 2 is that bidirectional safety tongs remove positive stereogram after cover board in the embodiment of the present invention；
Fig. 3 is the partial enlarged view of a-quadrant in Fig. 1；
Fig. 4 is the stereogram at the bidirectional safety tongs back side in the embodiment of the present invention；
Fig. 5 is the sectional view in the faces A-A in Fig. 1；
Fig. 6 is the original state figure of bidirectional safety tongs in the embodiment of the present invention；
The working state figure of bidirectional safety tongs when Fig. 7 is car overspeed descending in the embodiment of the present invention；
Fig. 8 is the working state figure of bidirectional safety tongs when car uplink exceeds the speed limit in the embodiment of the present invention.
Wherein, 1, holder；2, dual-wedge；3, flat pliers body；31, upper clamper wedge surface；32, non-working surface；33, lower clamper wedge
Face；4, upper wedge caliper；5, hyposphene caliper；6, interlocking bar；7, connecting rod；8, drive link；9, cover board；10, sliding slot；11, guide rail；12、
Gear；13, disk spring；14, second back-moving spring；15, (the first back-moving spring；16, lifting pin；17, guide rod；18, lower lateral spacing
Position block；19, upside limited block；20, upper needle roller components；20 ', lower needle roller components；21, guide part；22, pivot；23, rack；24、
Spacer pin.
Specific implementation mode
It is further illustrated the present invention with reference to embodiment and attached drawing.
As illustrated in fig. 1 and 2, bidirectional safety tongs include holder 1, flat pliers body 3, wedge caliper group, dual-wedge 2, transmission mechanism with
And resetting-mechanism.It is the front of holder 1 shown in Fig. 1 and 2.Guide rail 11 is vertically arranged in the positive guide-track groove of holder 1.
Flat pliers body 3 and wedge caliper group are mounted on holder 1 and are located at 11 both sides of guide rail.It is right that holder 1 is located at guide rail 11
Side is equipped with the groove of installation dual-wedge 2, and the upper and lower two side of groove is correspondingly provided with guide groove respectively, and dual-wedge 2 be oriented to
Slot cooperation both sides be equipped with convex block so that dual-wedge 2 can sliding plug in the guide groove at both ends.The guiding wedge of dual-wedge 2
Face is matched with wedge caliper group, back between 1 right side wall of the side of wedge caliper group and holder be equipped with three groups of disk springs 13.
Wedge caliper group includes that the upper wedge caliper 4 being arranged symmetrically and hyposphene caliper 5, the two are flexibly connected by interlocking bar 6, phase
Answer ground dual-wedge 2 on set there are two respectively with the matched guiding wedge surface of upper and lower wedge caliper.Two are oriented to wedge surface and symmetrically set
It sets, and high among the side of two wedge surface compositions, both sides are low.
Two in order to coordinate dual-wedge 2 are oriented to wedge surface simultaneously, and upper wedge caliper 4 presents the length of side, following short right-angled trapezium
Shape, the rubbing surface close to 11 side of guide rail is parallel with guide rail 11, and the compressive plane close to 2 side of dual-wedge is led on dual-wedge 2
It is parallel to wedge surface；Secondly, the lateral surface of upper wedge caliper 4 is additionally provided with lifting pin 16.Hyposphene caliper 5 is straight in short, the lower length of side in top
Angle trapezoidal shape, the rubbing surface close to 11 side of guide rail is parallel with guide rail 11, compressive plane and dual-wedge 2 close to 2 side of dual-wedge
Lower guiding wedge surface it is parallel.
As shown in figure 5, sliding slot 10 is respectively equipped with inside and outside upper wedge caliper 4 and hyposphene caliper 5, the cunning on upper wedge caliper 4
Slot 10 and the guiding wedge surface of 2 upside of dual-wedge are arranged in parallel, the guiding wedge of the sliding slot 10 on hyposphene caliper 5 and 2 downside of dual-wedge
Face is arranged in parallel.Meanwhile the positive and negative of dual-wedge 2 is also equipped with four cover boards 9 up and down, 9 edge of cover board has embedded sliding slot 10
Flanging.
Secondly, needle roller components 20 and lower needle roller are further respectively had between upper wedge caliper 4 and hyposphene caliper 5 and dual-wedge 2
Component 20 '.Needle roller components include needle roller frame and needle roller, and upper and lower two needle roller components are connected by tension spring, and upper needle roller components 20
Upper end then pass through tension spring and connecting rod 7 and connect.When upper wedge caliper 4 and hyposphene caliper 5 are slided along sliding slot 10, needle roller components can
The frictional force being subject to when wedge caliper 4 and hyposphene caliper 5 slide in reduction.
As shown in figure 3, resetting-mechanism includes the connection above connecting rod 7 of wedge caliper 4 and the guide rod 17 being fixed on holder 1, even
It is set on guide rod 17 after the free end bending of bar 7, it is each on the guide rod 17 of the separation both sides using the position worn as separation
It is arranged with (the first back-moving spring 15 and second back-moving spring 14.Guide rod 17 is equipped with downside limited block 18 close to one end of holder 1, separately
One end is equipped with upside limited block 19, the position moved up and down for limiting upper wedge caliper 4.
As shown in figs. 1 and 4, there are two the upper clamper wedge surface 31 being arranged symmetrically and lower clamper wedge surface 33, connections for the tool of flat pliers body 3
Plane between upper clamper wedge surface 31 and lower clamper wedge surface 33 is to be parallel to the non-working surface 32 of guide rail 11.Flat pliers body 3 passes through pivot
Axis 22 is coaxially disposed with gear 12, drives flat pliers body 3 to rotate by gear 12.
Transmission mechanism includes rack 23 and the gear 12 that coordinates with rack 23, and rack 23 is fixedly connected with drive link 8, is passed
Lever 8 is then connect by guide part 21 with connecting rod 7.When shift mechanism lifts wedge caliper upward or downward, wedge caliper can drive
Connecting rod 7, guide part 21, drive link 8 and rack 23 so that rack 23 can be rotated with moving gear 12.
The course of work of bidirectional safety tongs in the present embodiment is as follows：
As shown in fig. 6, when car normal operation bidirectional safety tongs do not act, the non-working surface 32 and guide rail of flat pliers body 3
11 is parallel, and gap between the two is 3.5mm；The rubbing surface of the other side of guide rail 11 and upper wedge caliper 4 and hyposphene caliper 5 it
Between gap be 3.5mm.
When car upstream or downstream speed reaches upper limit speed, limiter of speed pulls governor rope, governor rope then upward
Or the lifting pin 16 of upper wedge caliper 4 is lifted downwards, matching used limiter of speed is bidirectional speed limiter.
As shown in fig. 7, for when car downstream rate reaches upper limit speed, bidirectional speed limiter pulls governor rope, limit
The lifting pin 16 that fast device rope lifts upper wedge caliper 4 upwards is carried due to being equipped with interlocking bar 6 between upper wedge caliper 4 and hyposphene caliper 5
Hyposphene caliper 5 can be driven when pulling on wedge caliper 4.And upper wedge caliper 4 and hyposphene caliper 5 be when moving up, it can be respectively along cover board 9
Fit structure between the sliding slot 10 on wedge caliper is moved to working position.Upper wedge caliper 4 can be moved relative to holder 1 toward the upper right corner
It is dynamic, and hyposphene caliper 5 is then moved relative to holder 1 toward the upper left corner.
Upper wedge caliper 4 can squeeze needle roller components 20 and then squeeze dual-wedge 2, and 5 side of hyposphene caliper connects with guide rail 11
It touches and rubs, needle roller components 20 ' and then extruding dual-wedge 2 under hyposphene caliper 5 can squeeze under the reaction force of guide rail.
It can be moved up with lower moving guide 21, drive link 8 and rack 23 by connecting rod 7 when upper wedge caliper 4 moves simultaneously,
Rack 23 can be rotated clockwise with moving gear 12 (relative to 1 back side of holder), and can drive flat pliers body 3 simultaneously when the rotation of gear 12
It rotates counterclockwise (relative to 1 front of holder) so that the lower clamper wedge surface 33 of flat pliers body 3 is close to guide rail 11, eventually by hyposphene
The lower clamper wedge surface 33 of 5 peace caliper 3 of caliper firmly holds guide rail tightly, makes car stop.
As shown in figure 8, when car speed uplink reaches upper limit speed, governor rope then lifts downwards upper wedge caliper 4
Pin 16 is lifted, guide rail 11 is firmly held tightly eventually by the upper clamper wedge surface 31 of 4 peace caliper 3 of upper wedge caliper, makes car stop,
It is repeated no more since the course of work is similar.
The reset principle of bidirectional safety tongs when downlink reaches upper limit speed：
Car up moves under external force, and governor rope can remove the active force to upper wedge caliper 4.Due at this time
One resetting spring 15 is in compressive state, and second back-moving spring 14 is then in free tensionless winkler foundation state, and connecting rod 7 can be multiple by first
The downward active force of position spring 15.4 slide downward of wedge caliper in promotion, and then drive hyposphene caliper 5 to downslide by interlocking bar 6
Dynamic, due to the fit structure of the sliding slot 10 on cover board 9 and wedge caliper, the rubbing surface of hyposphene caliper 5 can leave guide rail 11.Meanwhile
The disk spring 13 being installed on 1 right side wall of holder can push 2 direction guiding rail of dual-wedge, 11 Slideslip.And when upper wedge caliper 4 is downward
When sliding, connecting rod 7 can be moved down with lower moving guide 21, drive link 8 and rack 23 simultaneously, and rack 23 can be inverse with moving gear 12
Hour hands rotate (relative to 1 back side of holder), and flat pliers body 3 can be driven to rotate clockwise (relative to branch simultaneously when the rotation of gear 12
1 front of frame) so that the non-working surface 32 of flat pliers body 3 is parallel to guide rail 11, and the gap between guide rail side and non-working surface 32 is extensive
It is again 3.5mm, the gap between the other side of guide rail and upper wedge caliper 4 and the rubbing surface of hyposphene caliper 5 reverts to 3.5mm.
Finally, car is detached from the brake force normal operation of bidirectional safety tongs.
Since the reset principle of bidirectional safety tongs is similar with the above process when uplink reaches upper limit speed repeats no more.
Claims (8)
1. a kind of bidirectional safety tongs include the holder with guide-track groove, are separately mounted to the flat pliers body and wedge of support guide slot both sides
Caliper group, and the dual-wedge that is slidably mounted on holder and coordinates with the wedge caliper group, the wedge caliper group include symmetrical
Arrangement upper wedge caliper and hyposphene caliper, correspondingly set on the dual-wedge there are two respectively with upper wedge caliper, hyposphene caliper phase
The guiding wedge surface of cooperation, which is characterized in that the upper wedge caliper is connected with hyposphene caliper by interlocking bar, and the flat pliers body has
Two clamper wedge surfaces being arranged symmetrically, and connect with the holder pivots by pivot, upper wedge caliper is connected by transmission mechanism
The pivot, when braking upper wedge caliper sliding drive the flat pliers body rotation or hyposphene caliper to connect institute by transmission mechanism
State pivot, when braking the sliding of hyposphene caliper drive the flat pliers body rotation so that the clamper wedge surface is close to guide rail, the holder
On be additionally provided with the resetting-mechanism for acting on wedge caliper group and acting on pivot by transmission mechanism.
2. bidirectional safety tongs according to claim 1, which is characterized in that including limit upper wedge caliper and hyposphene caliper along with
What is respectively coordinated is oriented to the guiding mechanism of wedge surface movement.
3. bidirectional safety tongs according to claim 2, which is characterized in that the guiding mechanism includes the wedge caliper group that reclines
Cover board, the upper wedge caliper and hyposphene caliper are equipped with the sliding slot arranged along respective glide direction, and the cover board edge has embedding
Enter the flanging of the sliding slot.
4. bidirectional safety tongs according to claim 1, which is characterized in that the resetting-mechanism include the upper wedge caliper of connection or
The connecting rod of hyposphene caliper and the guide rod being fixed on holder, are set on guide rod after the free end bending of connecting rod, with the position worn
It is set to separation, resetting spring is respectively arranged on the guide rod of the separation both sides.
5. bidirectional safety tongs according to claim 4, which is characterized in that the guide rod, which is equipped with, limits connecting rod bending part cunning
Migrate the locating part of journey.
6. bidirectional safety tongs according to claim 4, which is characterized in that the transmission mechanism includes rack and and rack
The gear of cooperation, the pivot are the wheel shaft of gear, and the rack connects the connecting rod by linkage mechanism.
7. bidirectional safety tongs according to claim 1, which is characterized in that be equipped with rolling between the wedge caliper group and dual-wedge
Needle assemblies.
8. bidirectional safety tongs according to claim 1, which is characterized in that the holder is recessed equipped with coordinating with dual-wedge
Slot, is equipped with sliding equipment between groove both sides and dual-wedge, dual-wedge is set back between the side and groove inner wall of wedge caliper group
There is disk spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610776703.2A CN106219351B (en) | 2016-08-30 | 2016-08-30 | a kind of bidirectional safety tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610776703.2A CN106219351B (en) | 2016-08-30 | 2016-08-30 | a kind of bidirectional safety tongs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106219351A CN106219351A (en) | 2016-12-14 |
| CN106219351B true CN106219351B (en) | 2018-10-02 |
Family
ID=58072051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610776703.2A Expired - Fee Related CN106219351B (en) | 2016-08-30 | 2016-08-30 | a kind of bidirectional safety tongs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106219351B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107082337A (en) * | 2017-06-09 | 2017-08-22 | 浙江理工大学 | A kind of rack and pinion engagement formula elevator safety gear jaw device |
| CN108298399B (en) * | 2018-03-30 | 2023-09-08 | 徐州市三森威尔矿山科技有限公司 | Double wedge block force-variable braking rope clamping mechanism |
| EP3674248B1 (en) * | 2018-12-31 | 2022-09-07 | KONE Corporation | An elevator car parking brake |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000446A (en) * | 2015-08-13 | 2015-10-28 | 卫小兵 | Device for preventing elevator car from moving accidentally |
| CN105016166A (en) * | 2015-08-13 | 2015-11-04 | 卫小兵 | Two-way safety gear used for preventing lift car from moving accidentally |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1121975C (en) * | 2000-04-14 | 2003-09-24 | 中国建筑科学研究院建筑机械化研究分院 | Bidirectional safety tongs for elevator |
| CN2656380Y (en) * | 2003-09-27 | 2004-11-17 | 叶时光 | Bidirectional safety pincers for elevator |
| CN2721586Y (en) * | 2004-05-24 | 2005-08-31 | 宁波申菱电梯配件有限公司 | Bidirectional speed limited safety pliers for elevator |
| CN2711118Y (en) * | 2004-06-22 | 2005-07-20 | 河北东方机械厂 | Two-direction safety tongs |
| KR101265672B1 (en) * | 2011-12-15 | 2013-05-22 | (주) 진흥엘리베이터 | Emergency brake for elevator |
| CN203624759U (en) * | 2013-12-23 | 2014-06-04 | 上海微频莱机电科技有限公司 | Bidirectional safety tongs for elevator |
| CN204958046U (en) * | 2015-08-13 | 2016-01-13 | 卫小兵 | A two -way safety tongs for preventing car is unexpected to be removed |
| CN105858398B (en) * | 2016-05-09 | 2018-06-26 | 浙江西子富沃德电机有限公司 | A kind of safety device for preventing accidental movement of elevator cage |
| CN206051206U (en) * | 2016-08-30 | 2017-03-29 | 浙江西子富沃德电机有限公司 | A kind of bidirectional safety tongs |
-
2016
- 2016-08-30 CN CN201610776703.2A patent/CN106219351B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000446A (en) * | 2015-08-13 | 2015-10-28 | 卫小兵 | Device for preventing elevator car from moving accidentally |
| CN105016166A (en) * | 2015-08-13 | 2015-11-04 | 卫小兵 | Two-way safety gear used for preventing lift car from moving accidentally |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106219351A (en) | 2016-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106219351B (en) | a kind of bidirectional safety tongs | |
| CN2721586Y (en) | Bidirectional speed limited safety pliers for elevator | |
| CN103693524A (en) | Elevator with emergency braking equipment | |
| CN106241549B (en) | A kind of elevator bidirectional safety tongs | |
| JP2011102165A (en) | Emergency stop device for elevator | |
| CN109048284A (en) | A kind of connecting rod small end hole bushing press-mounting device | |
| CN105035907B (en) | A kind of device of adjust automatically brake force | |
| CN206051206U (en) | A kind of bidirectional safety tongs | |
| CN204624880U (en) | Elevator safety clamp device | |
| CN207175133U (en) | A kind of dual anti-fall elevator | |
| CN206051205U (en) | A kind of elevator bidirectional safety tongs | |
| CN2711118Y (en) | Two-direction safety tongs | |
| CN207566659U (en) | A kind of two-way progressive rope gripper | |
| CN202542623U (en) | Progressive type safety gear of anti-falling safety device | |
| CN203064852U (en) | Pape clamping mechanism used for paper punching machine | |
| CN203306871U (en) | Accidental movement protective system of elevator car | |
| CN106698143A (en) | Safety tong linkage device | |
| EP4052950A1 (en) | Maglev train guiding method and guide wheel device | |
| CN205173310U (en) | Calliper structure | |
| CN208790976U (en) | Add the safe forceps system of malfunction microswitch | |
| CN207566656U (en) | A kind of lift brake safety clamp | |
| CN209191967U (en) | Brake clamp rail changing device | |
| CN102284634A (en) | Pulling wedge | |
| CN207226734U (en) | The safety tongs and elevator speed governor of a kind of elevator | |
| CN207248616U (en) | A kind of concrete pressure testing machine with protective device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181002 Termination date: 20190830 |