CN105438916A - Mechanical automatic unlocking safety gear of elevator - Google Patents
Mechanical automatic unlocking safety gear of elevator Download PDFInfo
- Publication number
- CN105438916A CN105438916A CN201511005413.XA CN201511005413A CN105438916A CN 105438916 A CN105438916 A CN 105438916A CN 201511005413 A CN201511005413 A CN 201511005413A CN 105438916 A CN105438916 A CN 105438916A
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- Prior art keywords
- elevator
- brake
- guide rail
- traction
- automatic unlocking
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Types And Forms Of Lifts (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention provides a mechanical automatic unlocking safety gear of an elevator. The mechanical automatic unlocking safety gear of the elevator is in sliding connection with guide rails of the elevator. The mechanical automatic unlocking safety gear of the elevator comprises a brake box and a traction pin plate, wherein traction pins are arranged on the traction pin plate; a first-stage brake mechanism, a second-stage brake mechanism and a traction block are arranged symmetric at the left and right about the guide rails in the brake box; the first-stage brake mechanism is used for braking the brake box; the second-stage brake mechanism is used for braking an elevator car after the braking or during the braking of the brake box. With the adoption of the mechanical automatic unlocking safety gear of the elevator, the elevator safety can be effectively ensured, and meanwhile, the complexity of an elevator safety device can be reduced; the safety gear is not used together with a speed limiting device, so that the mechanical structure can be greatly simplified; the first-stage braking of the brake box and the second-stage braking of the elevator car can be achieved; after a power traction rope of the elevator is repaired, a brake gear can be automatically unlocked through each spring, thus manual locking is avoided, and as a result, the convenience of use is improved, and the design is humanized.
Description
Technical field
The invention belongs to elevator car safety field, particularly relate to a kind of mechanical type automatic unlocking elevator safety gear.
Background technology
Traditional elevator safety clamp device, under the manipulation of velocity limiter, when elevator speed exceedes the limited speed of elevator governor setting, or when suspension strop fracture occurs and be lax, by urgent for car stop, and be clamped in a kind of safety device on guide rail.It provides actv. protective effect to the safe operation of elevator, is generally arranged on car frame or counterweight frame.At present, elevator safety gear need and speed-limit device with the use of.Wherein, velocity limiter is generally positioned at the machine room at elevator top, and safety tongs is arranged on car frame or counterweight frame, follows elevator and moves together.The action of safety tongs is controlled by velocity limiter.The mechanical device of such safety tongs, velocity limiter conbined usage, ensure that the safe operation of elevator, but also must two covering devices with the use of under, just can guarantee the safety of elevator, this makes physical construction relative complex, to elevator overspeed break rope mechanical adjustment poor.Such structure design does not also possess automatic unlocking function, and after actv. prevents used during elevator falling, the unblock of velocity limiter and safety tongs is relatively loaded down with trivial details.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art, a kind of mechanical type automatic unlocking elevator safety gear is provided, do not need and velocity limiter conbined usage, while effectively guaranteeing elevator safety, reduce the complexity of elevator car safety, and this device is after elevator reparation, again manually need not set safety tongs, can automatic unlocking.
The object of the invention is to be achieved through the following technical solutions:
A kind of mechanical type automatic unlocking elevator safety gear, be connected with the slide of elevator, the traction sole being fixed on lift car side comprising brake box, be connected with brake box, described traction sole is provided with the traction pin drawn brake box internal traction block through brake box, and described brake box inside is symmetrical set one-level stop mechanism, two stage braking mechanism and guiding piece about guide rail;
Brake box, under the traction of traction sole, is followed lift car and is moved up and down along guide rail.When elevator normally works, almost without friction or collision between brake box and guide rail.In order to the symmetry of the balance and braking force that ensure traction braking case, the traction pin on traction sole is arranged symmetrically with.
One-level stop mechanism and two stage braking mechanism are the separate stop mechanisms of two covers.Wherein one-level stop mechanism realizes the braking of brake box self, and two stage braking mechanism, after the braking of brake box or while braking, realizes the braking of lift car.
Described one-level stop mechanism, comprising can the mass of perpendicular movement, upper and lower two ends are connected with mass respectively guiding sliding bar and tooth bar sliding bar, be fixed on upper vertical orienting lug on mass on square box by inner circular aperture to the vertical guiding of guiding sliding bar, be fixed on sagging on mass lower square box to orienting lug by inner circular aperture to the vertical guiding of tooth bar sliding bar, upper balance spring is set on the guiding sliding bar between vertical orienting lug and mass; Lower balance spring is set on mass and sagging tooth bar sliding bar between orienting lug; Tooth bar sliding bar is provided with the transition gear engaged with tooth bar sliding bar near the side of guide rail, transition gear is provided with the band finger cam engaged with transition gear near the side of guide rail; Clamp segment with finger cam leaves gap when non-brake and between guide rail, be with during braking the clamp segment of finger cam rotate to and guide rail between gapless clamping guide-rail;
Described one-level stop mechanism is mechanical type acceleration induction mechanism, under the combined action of upper and lower balance spring and gravity, can keep mass balance in the vertical direction.
In described one-level stop mechanism, when lift car accelerates upwards to run or accelerate to run downwards in operational process, upwards or downwards sync plus white runs to drive brake box, due to the effect of mass force of inertia, mass can be made to have a displacement contrary relative to bin movement direction, and the moving belt carry-over bar sliding bar of mass, makes transition gear rotate, and then drive band finger cam to rotate, finally make band finger cam clamp segment near or away from guide rail.Known according to " GB/T10058-2009 elevator technology condition ", rated acceleration and the braking deceleration maxim of passenger elevator all should not be greater than 1.5m/s
2.And when fracture or lax situation occur suspension strop, the acceleration/accel that lift car and brake box decline will close to acceleration due to gravity (9.8m/s
2, be about 6.5 times of elevator design peak acceleration), be greater than elevator design acceleration/accel.Therefore, suitable balance spring and mass can be chosen, realize being less than 1.5m/s when elevator acceleration/accel
2time, the anglec of rotation of the band finger cam produced by mass inertia displacement is less, and cam clamp segment can not be adjacent to guide rail; And when elevator decline acceleration/accel is greater than 1.5m/s
2time, band finger cam rotates just to gapless between clamp segment and guide rail and clamping guide-rail.Now, symmetrical two band finger cams are adjacent to guide rail, go into " V " font, if brake box continues to decline, with finger cam will under the combined action of friction force and spring force clamping guide-rail further, finally make brake box slow down decline and even directly stop.
Hinged and hinge-point place, the lower end of the contiguous block that described two stage braking mechanism comprises the horizontally-guided block being provided with horizontally-guided hole above vertical orienting lug, the brake clamp of horizontal motion, upper end and brake clamp are hinged in horizontally-guided block, upper end and contiguous block by the J-shaped turning block of connecting pin axial limiting, described J-shaped turning block with the locating dowel pin on casing for turning cylinder and by stop nut axial limiting; Described contiguous block and J-shaped turning block are positioned at the side of tooth bar sliding bar away from guide rail, and described guiding piece is between tooth bar sliding bar and J-shaped turning block and above the base being positioned at J-shaped turning block; Described guiding piece and described traction pin coordinate; Extension spring is horizontally disposed with between described brake clamp and the cabinet wall away from guide rail.
In described two stage braking mechanism, if do not have relative displacement between brake box and lift car, then brake clamp is away from guide rail under the pulling force effect of extension spring, and namely when elevator normally works, brake clamp can not clamping guide-rail, fracture or lax situation is there is once suspension strop, from one-level brake action result, brake box descending speed slows down or stops, and now lift car owing to not running stop, still accelerate to decline, lift car certainly will be caused to produce downward displacement relative to brake box, until the traction pin of fixing traction sole is on the elevator car pressed on J-shaped turning block, elevator continues descending, J-shaped turning block is rotated, by the Movement transmit of contiguous block, brake clamp is made to overcome the pulling force of extension spring towards guide rail movement, until compression guide rail, the final car that makes under the effect of friction force stops declining fast.
As optimal way, described brake box comprises casing and cover plate, and on described cover plate, symmetry has two square holes coordinated with traction pin.
Traction pin can extend in brake box through square hole.After traction pin stretches into brake box, freely up and down can move along guiding piece.When elevator normally works, when lift car is up, move brake box upward movement by traction tape; When lift car is descending, due to the existence of guiding piece, brake box is hung on traction pin, follows elevator and synchronously move downward along guide rail.
As optimal way, below described J-shaped turning block, be provided with buffer plate.
As optimal way, the vertical height of traction pin is greater than the spacing on traction sole end and buffer plate top.
As optimal way, described transition gear is by the transition gear axle axial location at center, and band finger cam is by the cam orientation axle axial location at center.
As optimal way, in the casing of described brake box, be provided with the fluting with guide rail in the heart.
As optimal way, the described clamp segment of band finger cam and/or the seal face of brake clamp are provided with annular knurl.To increase the friction force of clamp segment.
As optimal way, described brake clamp tail end has hanging hole, and the cabinet wall away from guide rail is provided with spring hanger, is provided with extension spring between described hanging hole and spring hanger.
As optimal way, described traction sole is by through hole and be bolted to lift car side.
Beneficial effect of the present invention is: the present invention, while effectively guaranteeing elevator safety, reduces the complexity of elevator car safety, does not need and velocity limiter conbined usage, enormously simplify physical construction; Achieve the one-level braking of brake box and the two stage braking of lift car, the mechanical adjustment performance of disconnected rope hypervelocity is improved; Elevator power hauling rope repair after, need not manually brake off clamp locking, can under the application force of each spring automatic unlocking, use convenient, design hommization more.
Accompanying drawing explanation
Fig. 1 is overall structure appearance schematic diagram of the present invention.
Fig. 2 is brake box appearance schematic diagram.
Fig. 3 is traction sole schematic diagram.
Fig. 4 is that the normal work schedule of elevator moves case whole interior structural scheme of mechanism.
Fig. 5 is elevator normal work schedule Dong Xiang whole interior mechanism schematic three dimensional views.
Fig. 6 is the brake box whole interior structural scheme of mechanism realizing one-level braking.
Fig. 7 is the brake box whole interior structural scheme of mechanism realizing two stage braking.
Wherein, 1 is guide rail, 2 is brake box, 3 is traction sole, 4 is cover plate, 5 is screw, 6 is casing, 7 is horizontally-guided block, 8 is brake clamp, 9 is extension spring, 10 is spring hanger, 11 is contiguous block, 12 is connecting pin, 13 is J-shaped turning block, 14 is stop nut, 15 is locating dowel pin, 16 is guiding piece, 17 is buffer plate, 18 is cam orientation axle, 19 is band finger cam, 20 is transition gear axle, 21 is transition gear, 22 is tooth bar sliding bar, 23 is lower balance spring, 24 is mass, 25 is guiding sliding bar, 26 is upper balance spring, 271 is upper vertical orienting lug, 272 is sagging to orienting lug, 28 is traction pin, 29 is through hole, 30 is square hole, 31 is the base of J-shaped turning block, 32 is fluting, 33 is hanging hole.
Detailed description of the invention
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art the content disclosed by this specification sheets can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by detailed description of the invention different in addition, and the every details in this specification sheets also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.
A kind of mechanical type automatic unlocking elevator safety gear, with guide rail 1 sliding block joint of elevator, the traction sole 3 being fixed on lift car side comprising brake box 2, be connected with brake box 2, described traction sole is provided with the traction pin 28 drawn brake box internal traction block 16 through brake box, and described brake box 2 inside is symmetrical set one-level stop mechanism, two stage braking mechanism and guiding piece 16 about guide rail;
Brake box, under the traction of traction sole, is followed lift car and is moved up and down along guide rail.When elevator normally works, almost without friction or collision between brake box and guide rail.In order to the symmetry of the balance and braking force that ensure traction braking case, the traction pin on traction sole is arranged symmetrically with.
One-level stop mechanism and two stage braking mechanism are the separate stop mechanisms of two covers.Wherein one-level stop mechanism realizes the braking of brake box self, and two stage braking mechanism, after the braking of brake box or while braking, realizes the braking of lift car.
Described one-level stop mechanism, comprising can the mass of perpendicular movement, upper and lower two ends are connected with mass respectively guiding sliding bar 25 and tooth bar sliding bar 22, be fixed on upper vertical orienting lug 271 on mass on square box by inner circular aperture to the vertical guiding of guiding sliding bar 25, be fixed on sagging on mass lower square box to orienting lug 272 by inner circular aperture to the vertical guiding of tooth bar sliding bar 22, upper balance spring 26 is set on the guiding sliding bar 25 between vertical orienting lug 271 and mass 24; Lower balance spring 23 is set on mass 24 and sagging tooth bar sliding bar 22 between orienting lug 272; Tooth bar sliding bar 22 is provided with the transition gear 21 engaged with tooth bar sliding bar 22 near the side of guide rail, transition gear 21 is provided with the band finger cam 19 engaged with transition gear 21 near the side of guide rail; Clamp segment with finger cam 19 leaves gap when non-brake and between guide rail, be with during braking the clamp segment of finger cam rotate to and guide rail between gapless clamping guide-rail;
Described one-level stop mechanism is mechanical type acceleration induction mechanism, under the combined action of upper and lower balance spring and gravity, can keep mass balance in the vertical direction.
In described one-level stop mechanism, when lift car accelerates upwards to run or accelerate to run downwards in operational process, upwards or downwards sync plus white runs to drive brake box, due to the effect of mass force of inertia, mass can be made to have a reverse displacement.The moving belt carry-over bar sliding bar of mass, makes transition gear rotate, and then drives band finger cam to rotate, finally make band finger cam clamp segment near or away from guide rail.Known according to " GB/T10058-2009 elevator technology condition ", rated acceleration and the braking deceleration maxim of passenger elevator all should not be greater than 1.5m/s
2.And when fracture or lax situation occur suspension strop, the acceleration/accel that lift car and brake box decline will close to acceleration due to gravity (9.8m/s
2, be about 6.5 times of elevator design peak acceleration), be greater than elevator design acceleration/accel.Therefore, suitable balance spring and mass can be chosen, realize being less than 1.5m/s when elevator acceleration/accel
2time, the anglec of rotation of the band finger cam produced by mass inertia displacement is less, and cam clamp segment can not be adjacent to guide rail; And when elevator decline acceleration/accel is greater than 1.5m/s
2time, band finger cam rotates just to gapless between clamp segment and guide rail and clamping guide-rail.Now, symmetrical two band finger cams are adjacent to guide rail, go into " V " font, if brake box continues to decline, with finger cam will under the combined action of friction force and spring force clamping guide-rail further, finally make brake box slow down decline and even directly stop.
Hinged and hinge-point place, the lower end of the contiguous block 11 that described two stage braking mechanism comprises the horizontally-guided block 7 being provided with horizontally-guided hole above vertical orienting lug 271, the brake clamp 8 of horizontal motion, upper end and brake clamp 8 are hinged in horizontally-guided block, upper end and contiguous block 11 is by the J-shaped turning block 13 of connecting pin 12 axial limiting, and described J-shaped turning block 13 is turning cylinder with the locating dowel pin 15 on casing 6 and by stop nut 14 axial limiting; Described contiguous block 11 and J-shaped turning block 13 are positioned at the side of tooth bar sliding bar 22 away from guide rail, and described guiding piece 16 is between tooth bar sliding bar 22 and J-shaped turning block 13 and above the base 31 being positioned at J-shaped turning block 13; Described guiding piece 16 and described traction pin 28 coordinate; Extension spring 9 is horizontally disposed with between described brake clamp and the cabinet wall away from guide rail.
In described two stage braking mechanism, if do not have relative displacement between brake box and lift car, then brake clamp is away from guide rail under the pulling force effect of extension spring, and namely when elevator normally works, brake clamp can not clamping guide-rail, fracture or lax situation is there is once suspension strop, from one-level brake action result, brake box descending speed slows down or stops, and now lift car owing to not running stop, still accelerate to decline, lift car certainly will be caused to produce downward displacement relative to brake box, until the traction pin of fixing traction sole is on the elevator car pressed on the base 31 of J-shaped turning block, elevator continues descending, J-shaped turning block is rotated, by the Movement transmit of contiguous block, brake clamp is made to overcome the pulling force of extension spring towards guide rail movement, until compression guide rail, the final car that makes under the effect of friction force stops declining fast.
Described brake box 2 comprises casing 6 and cover plate 4, and cover plate 4 screw 5 is fixed on casing 6, and on described cover plate 4, symmetry has two square holes 30 coordinated with traction pin 28.
Traction pin can extend in brake box through square hole 30.After traction pin stretches into brake box, freely up and down can move along guiding piece.When elevator normally works, when lift car is up, move brake box upward movement by traction tape; When lift car is descending, due to the existence of guiding piece, brake box is hung on traction pin, follows elevator and synchronously move downward along guide rail.
Buffer plate 17 is provided with below described J-shaped turning block 13.After brake clamp 8 compresses guide rail 1, support and motion buffer action are played to J-shaped turning block 13 tail end.
The vertical height of traction pin is greater than the spacing on traction sole end and buffer plate 17 top.Such traction pin that can prevent skids off from guiding piece 16.
Described transition gear 21 is by transition gear axle 20 axial location at center, and band finger cam 19 is by cam orientation axle 18 axial location at center.
The fluting 32 with guide rail is provided with in the heart in the casing of described brake box.
The clamp segment of described band finger cam 19 and/or the seal face of brake clamp 8 are provided with annular knurl.To increase the friction force of clamp segment.
Described brake clamp 8 tail end has hanging hole 33, and the cabinet wall away from guide rail is provided with spring hanger 10, is provided with extension spring 9 between described hanging hole 33 and spring hanger 10.
Described traction sole 3 is by through hole 29 and be bolted to lift car side.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, have in all art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (9)
1. a mechanical type automatic unlocking elevator safety gear, be connected with the slide of elevator, it is characterized in that: the traction sole (3) being fixed on lift car side comprising brake box (2), be connected with brake box (2), described traction sole is provided with the traction pin (28) drawn brake box internal traction block (16) through brake box, and described brake box (2) inside is symmetrical set one-level stop mechanism, two stage braking mechanism and guiding piece (16) about guide rail;
Described one-level stop mechanism, comprising can the mass (24) of perpendicular movement, the guiding sliding bar (25) that upper and lower two ends are connected with mass respectively and tooth bar sliding bar (22), be fixed on upper vertical orienting lug (271) on mass on square box by inner circular aperture to guiding sliding bar (25) vertical guiding, be fixed on sagging on mass lower square box to orienting lug (272) by inner circular aperture to tooth bar sliding bar (22) vertical guiding, upper balance spring (26) is set on the guiding sliding bar (25) between vertical orienting lug (271) and mass (24), lower balance spring (23) is set on mass (24) and sagging tooth bar sliding bar (22) between orienting lug (272), tooth bar sliding bar (22) is provided with near the side of guide rail the transition gear (21) engaged with tooth bar sliding bar (22), and transition gear (21) is provided with near the side of guide rail the band finger cam (19) engaged with transition gear (21), the clamp segment of band finger cam (19) leaves gap when non-brake and between guide rail, be with during braking the clamp segment of finger cam rotate to and guide rail between gapless clamping guide-rail,
Described two stage braking mechanism comprise the horizontally-guided block (7) being provided with horizontally-guided hole of vertical orienting lug (271) top, the brake clamp (8) of horizontal motion, upper end are hinged with brake clamp (8) in horizontally-guided block contiguous block (11), upper end with the lower end of contiguous block (11) hinged and hinge-point place by the J-shaped turning block (13) of connecting pin (12) axial limiting, described J-shaped turning block (13) with the locating dowel pin (15) on casing (6) for turning cylinder also passes through stop nut (14) axial limiting; Described contiguous block (11) and J-shaped turning block (13) are positioned at the side of tooth bar sliding bar (22) away from guide rail, and described guiding piece (16) to be positioned between tooth bar sliding bar (22) and J-shaped turning block (13) and to be positioned at the top, base (31) of J-shaped turning block (13); Described guiding piece (16) and described traction pin (28) coordinate; Extension spring is horizontally disposed with between described brake clamp and the cabinet wall away from guide rail.
2. mechanical type automatic unlocking elevator safety gear according to claim 1, it is characterized in that: described brake box (2) comprises casing (6) and cover plate (4), on described cover plate (4), symmetry has two square holes (30) coordinated with traction pin (28).
3. mechanical type automatic unlocking elevator safety gear according to claim 1, is characterized in that: described J-shaped turning block (13) below is provided with buffer plate (17).
4. mechanical type automatic unlocking elevator safety gear according to claim 3, is characterized in that: the vertical height of traction pin is greater than the spacing on traction sole end and buffer plate (17) top.
5. mechanical type automatic unlocking elevator safety gear according to claim 1, it is characterized in that: described transition gear (21) is by transition gear axle (20) axial location at center, and band finger cam (19) is by cam orientation axle (18) axial location at center.
6. mechanical type automatic unlocking elevator safety gear according to claim 1, is characterized in that: be provided with in the heart in the casing of described brake box and the fluting of guide rail (32).
7. mechanical type automatic unlocking elevator safety gear according to claim 1, is characterized in that: the clamp segment of described band finger cam (19) and/or the seal face of brake clamp (8) are provided with annular knurl.
8. mechanical type automatic unlocking elevator safety gear according to claim 1, it is characterized in that: described brake clamp (8) tail end has hanging hole (33), cabinet wall away from guide rail is provided with spring hanger (10), is provided with extension spring (9) between described hanging hole (33) and spring hanger (10).
9. mechanical type automatic unlocking elevator safety gear according to claim 1, is characterized in that: described traction sole (3) is by through hole (29) and be bolted to lift car side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511005413.XA CN105438916B (en) | 2015-12-28 | 2015-12-28 | Mechanical automatic unlocking elevator safety gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511005413.XA CN105438916B (en) | 2015-12-28 | 2015-12-28 | Mechanical automatic unlocking elevator safety gear |
Publications (2)
| Publication Number | Publication Date |
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| CN105438916A true CN105438916A (en) | 2016-03-30 |
| CN105438916B CN105438916B (en) | 2017-10-17 |
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| CN201511005413.XA Expired - Fee Related CN105438916B (en) | 2015-12-28 | 2015-12-28 | Mechanical automatic unlocking elevator safety gear |
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| CN106927331A (en) * | 2017-04-13 | 2017-07-07 | 台州市中奥特种设备检测技术服务有限公司 | A kind of speed limit anti-drop device for lift transformation |
| CN107500075A (en) * | 2017-08-18 | 2017-12-22 | 刘英辉 | A kind of Lift car type elevator speed-limiting device |
| CN109665405A (en) * | 2018-12-10 | 2019-04-23 | 深圳资深投资管理有限公司 | Highly sensitive entirely passive type stall proof elevator |
| CN110723406A (en) * | 2019-10-29 | 2020-01-24 | 佛山科学技术学院 | Pop-top can cap |
| CN112603236A (en) * | 2020-11-26 | 2021-04-06 | 青岛中科智能光电产业研究院有限公司 | Multi-angle wireless visible laryngoscope |
| CN114148853A (en) * | 2021-12-07 | 2022-03-08 | 深圳市优旭科技有限公司 | Anti-falling elevator structure with talkback function and method |
| CN114314247A (en) * | 2022-01-04 | 2022-04-12 | 安徽舒马克电梯股份有限公司 | Elevator car safety protection mechanism |
| CN115180479A (en) * | 2022-08-22 | 2022-10-14 | 陈日体 | Mechanical locking device for elevator without machine room |
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| CN114148853B (en) * | 2021-12-07 | 2022-08-09 | 深圳市优旭科技有限公司 | Anti-falling elevator structure with talkback function and method |
| CN114314247A (en) * | 2022-01-04 | 2022-04-12 | 安徽舒马克电梯股份有限公司 | Elevator car safety protection mechanism |
| CN114314247B (en) * | 2022-01-04 | 2023-11-03 | 安徽舒马克电梯股份有限公司 | Elevator car safety protection mechanism |
| CN115180479A (en) * | 2022-08-22 | 2022-10-14 | 陈日体 | Mechanical locking device for elevator without machine room |
| CN115180479B (en) * | 2022-08-22 | 2024-02-20 | 重庆能源职业学院 | Mechanical locking device of elevator without machine room |
Also Published As
| Publication number | Publication date |
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| CN105438916B (en) | 2017-10-17 |
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