CN105438916B - Mechanical automatic unlocking elevator safety gear - Google Patents
Mechanical automatic unlocking elevator safety gear Download PDFInfo
- Publication number
- CN105438916B CN105438916B CN201511005413.XA CN201511005413A CN105438916B CN 105438916 B CN105438916 B CN 105438916B CN 201511005413 A CN201511005413 A CN 201511005413A CN 105438916 B CN105438916 B CN 105438916B
- Authority
- CN
- China
- Prior art keywords
- guide rail
- brake box
- sliding bar
- braking
- automatic unlocking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
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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 present invention provides a kind of mechanical automatic unlocking elevator safety gear, it is slidably connected with the guide rail of elevator, including brake box, traction sole, the traction sole is provided with inside traction pin, the brake box and is symmetrical set one-level arrestment mechanism, two stage braking mechanism and guiding piece on guide rail；One-level arrestment mechanism realizes the braking of brake box itself, and two stage braking mechanism realizes the braking of lift car after the braking of brake box or while braking；The present invention reduces the complexity of elevator car safety, it is not necessary to be used in combination with limiter of speed, enormously simplify mechanical structure while effectively elevator safety is ensured；Realize brake box one-level braking and lift car two stage braking, elevator power pull rope reparation after, not manually release caliper locking, can under the active force of each spring automatic unlocking, use more facilitate, design more hommization.
Description
Technical field
The invention belongs to elevator car safety field, more particularly to a kind of mechanical automatic unlocking elevator safety gear.
Background technology
Traditional elevator safety clamp device, is under the manipulation of limiter of speed, when elevator speed is set more than elevator governor
Limitation speed when, or suspension strop occur fracture and relaxation in the case of, by the urgent stop of car, and be clamped on guide rail
A kind of safety device.Its safe operation to elevator provides effective protective effect, is typically installed in car frame or right
On weight frame.At present, elevator safety gear is needed and speed-limiting device is used cooperatively.Wherein, limiter of speed is normally at elevator top
In computer room, and safety tongs is arranged on car frame or counterweight frame, follows elevator to move together.The action of safety tongs passes through limiter of speed
It is controlled.The mechanical device that such safety tongs, limiter of speed are used in combination, it is ensured that the safe operation of elevator, but it is also necessary
In the case where two covering devices are used cooperatively, the safety of elevator is just can ensure that, this causes mechanical structure relative complex, to the disconnected rope of elevator overspeed
Mechanical adjustment it is poor.Such structure design does not also possess automatic unlocking function, after used during elevator falling is effectively prevented,
The unblock of limiter of speed and safety tongs is relatively cumbersome.
The content of the invention
It is contemplated that overcoming the deficiencies in the prior art, there is provided a kind of mechanical automatic unlocking elevator safety gear, it is not necessary to
It is used in combination with limiter of speed, while effectively elevator safety is ensured, reduces the complexity of elevator car safety, and should
Device, can automatic unlocking without carrying out artificial setting again to safety tongs after elevator reparation.
The purpose of the present invention is achieved through the following technical solutions：
A kind of mechanical automatic unlocking elevator safety gear, is slidably connected with the guide rail of elevator, including brake box, is fixed on electricity
It is provided through what brake box was drawn to brake box internal traction block on the traction sole of terraced car side, the traction sole
Draw and be symmetrical set one-level arrestment mechanism, two stage braking mechanism and guiding piece on guide rail inside pin, the brake box；
Brake box follows lift car to be moved up and down along guide rail under the traction of traction sole.In elevator normal work,
Almost without friction or collision between brake box and guide rail.In order to ensure traction braking case balance and brake force it is symmetrical
Property, the traction pin drawn on sole is arranged symmetrically.
One-level arrestment mechanism and two stage braking mechanism are two sets of separate arrestment mechanisms.Wherein one-level arrestment mechanism is real
The braking of existing brake box itself, two stage braking mechanism realizes the system of lift car after the braking of brake box or while braking
It is dynamic.
The one-level arrestment mechanism, including be vertically movable mass, respectively with mass upper and lower ends be connected lead
To sliding bar and rack sliding bar, the upper vertical guide pad being fixed on mass on square box is slided by inner circular aperture to being oriented to
The vertical guiding of lever, is fixed on sagging vertical to rack sliding bar by inner circular aperture to guide pad on mass lower square box
It is oriented to, upper balancing spring is set on the guiding sliding bar between vertical guide pad and mass；Lower balancing spring is set in
On mass and the sagging rack sliding bar between guide pad；Rack sliding bar is provided with close to the side of guide rail and slided with rack
The transition gear of bar engagement, transition gear is provided with the band finger cam engaged with transition gear close to the side of guide rail；Band finger cam
Clamp segment leave gap when non-brake and between guide rail, the clamp segment with finger cam is rotated to nothing between guide rail during braking
Gap and clamping guide-rail；
The one-level arrestment mechanism is mechanical acceleration induction mechanism, in the common of upper and lower balancing spring and gravity
Under effect, mass can be kept in the balance of vertical direction.
In the one-level arrestment mechanism, when lift car accelerates to run up in the process of running or accelerates fortune downwards
During row, the up or down sync plus white operation of brake box can be driven, due to the effect of mass inertia force, mass can be caused
There are a displacement in opposite direction relative to bin movement, the moving belt carry-over bar sliding bar of mass so that transition gear turns
It is dynamic, and then drive band finger cam to rotate, it is final to cause with finger cam clamp segment closer or far from guide rail.According to《GB/T 10058-
2009 elevator technology conditions》Understand, the rated acceleration and braking deceleration maximum of passenger lift not should be greater than 1.5m/
s2.And when the situation of fracture or relaxation occurs for suspension strop, the acceleration that lift car and brake box decline will be close to weight
Power acceleration (9.8m/s2, about 6.5 times of elevator design peak acceleration), more than elevator design acceleration.Therefore, it is optional
Appropriate balancing spring and mass is taken, is realized when elevator acceleration is less than 1.5m/s2When, produced by mass inertia displacement
The anglec of rotation with finger cam it is smaller, cam clamp segment will not be adjacent to guide rail；And it is more than 1.5m/s when elevator declines acceleration2
When, band finger cam rotates to gapless between clamp segment and guide rail and clamping guide-rail just.Now, symmetrical two bands tooth
Cam is adjacent to guide rail, goes into " V " font, if brake box continues to decline, band finger cam will be in frictional force and spring bullet
Further clamping guide-rail under the collective effect of power, finally causes brake box to slow down decline and even directly stop.
The two stage braking mechanism is including the horizontally-guided block provided with horizontally-guided hole above upper vertical guide pad, in water
The lower end of the caliper of horizontal movement, upper end and caliper are hinged in flat guide pad contiguous block, upper end and contiguous block be hinged and
By the J-shaped moving block of connecting pin axial limiting at pin joint, the J-shaped moving block using the alignment pin on casing as rotary shaft simultaneously
Pass through stop nut axial limiting；Contiguous block and the J-shaped moving block is located at side of the rack sliding bar away from guide rail, described to lead
Draw block to be located between rack sliding bar and J-shaped moving block and above the base of J-shaped moving block；The guiding piece and described lead
Pin coordinates；Extension spring is horizontally disposed between the cabinet wall of the caliper and remote guide rail.
In the two stage braking mechanism, if not having relative displacement between brake box and lift car, caliper is being drawn
Stretch away from guide rail under the pulling force effect of spring, i.e., in elevator normal work, caliper will not clamping guide-rail；Once suspension strop is sent out
During the situation of raw fracture or relaxation, from one-level braking action result, brake box decrease speed slows down or stopped, and now
Lift car is stopped due to no run, and still accelerates to decline, lift car certainly will be caused to be produced downwards relative to brake box
Displacement, until the traction foot press of fixed traction sole on the elevator car is on J-shaped moving block, elevator is continued traveling downwardly so that J
Shape moving block rotates, and is transmitted by the motion of contiguous block so that caliper overcomes the pulling force of extension spring to be moved towards guide rail, directly
To guide rail is compressed, finally car is caused quickly to stop declining in the presence of frictional force.
It is preferred that, the brake box includes symmetrically being provided with two and traction on casing and cover plate, the cover plate
The square hole that pin coordinates.
Traction pin may pass through square hole and extend into brake box.When draw pin stretch into brake box after, can along guiding piece up and down from
By moving.In elevator normal work, when lift car is up, can upwards it be moved by drawing the dynamic brake box of tape；Work as electricity
When terraced car is descending, due to the presence of guiding piece so that brake box is hung on traction pin, elevator is followed along the synchronous fortune downwards of guide rail
It is dynamic.
It is preferred that, buffer plate is provided with below the J-shaped moving block.
It is preferred that, the vertical height of traction pin is more than the spacing at traction sole end and buffer plate top.
It is preferred that, the transition gear by center transition gear axle axially position, with finger cam by center
Cam orientation axle axially position.
It is preferred that, the casing center of the brake box is provided with the fluting with guide rail.
It is preferred that, the seal face of the clamp segment with finger cam and/or caliper is provided with annular knurl.To increase
The frictional force of clamp segment.
It is preferred that, the caliper tail end has hanging hole, and the cabinet wall away from guide rail is provided with spring carrier arm, described
Extension spring is provided between hanging hole and spring carrier arm.
It is preferred that, the traction sole is by through hole and is bolted to lift car side.
Beneficial effects of the present invention are：The present invention reduces elevator car safety while effectively elevator safety is ensured
Complexity, it is not necessary to be used in combination with limiter of speed, enormously simplify mechanical structure；Realize brake box one-level brake with
And the two stage braking of lift car, the mechanical adjustment performance of disconnected rope hypervelocity is improved；After the reparation of elevator power pull rope,
Manually release caliper locking, can under the active force of each spring automatic unlocking, use more facilitate, design more
Hommization.
Brief description of the drawings
Fig. 1 is general structure appearance schematic diagram of the present invention.
Fig. 2 is brake box appearance schematic diagram.
Fig. 3 is traction sole schematic diagram.
Brake box whole interior structural scheme of mechanism when Fig. 4 is elevator normal work.
Brake box whole interior mechanism schematic three dimensional views when Fig. 5 is elevator normal work.
Fig. 6 is the brake box whole interior structural scheme of mechanism for realizing one-level braking.
Fig. 7 is the brake box whole interior structural scheme of mechanism for realizing two stage braking.
Wherein, 1 is guide rail, and 2 be brake box, and 3 be traction sole, and 4 be cover plate, and 5 be screw, and 6 be casing, and 7 lead for level
To block, 8 be caliper, and 9 be extension spring, and 10 be spring carrier arm, and 11 be contiguous block, and 12 be connecting pin, and 13 be J-shaped moving block,
14 be stop nut, and 15 be alignment pin, and 16 be guiding piece, and 17 be buffer plate, and 18 be cam orientation axle, and 19 be band finger cam,
20 be transition gear axle, and 21 be transition gear, and 22 be rack sliding bar, and 23 be lower balancing spring, and 24 be mass, and 25 be guiding
Sliding bar, 26 be upper balancing spring, and 271 be upper vertical guide pad, and 272 be sagging to guide pad, and 28 is draw pin, and 29 be logical
Hole, 30 be square hole, and 31 be the base of J-shaped moving block, and 32 be fluting, and 33 be hanging hole.
Embodiment
Illustrate embodiments of the present invention below by way of specific instantiation, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through specific realities different in addition
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.
A kind of mechanical automatic unlocking elevator safety gear, is slidably connected with the guide rail 1 of elevator, including brake box 2, is fixed on
Brake box is provided through on the traction sole 3 of lift car side, the traction sole to carry out brake box internal traction block 16
Inside the traction pin 28 of traction, the brake box 2 on guide rail be symmetrical set one-level arrestment mechanism, two stage braking mechanism with
And guiding piece 16；
Brake box follows lift car to be moved up and down along guide rail under the traction of traction sole.In elevator normal work,
Almost without friction or collision between brake box and guide rail.In order to ensure traction braking case balance and brake force it is symmetrical
Property, the traction pin drawn on sole is arranged symmetrically.
One-level arrestment mechanism and two stage braking mechanism are two sets of separate arrestment mechanisms.Wherein one-level arrestment mechanism is real
The braking of existing brake box itself, two stage braking mechanism realizes the system of lift car after the braking of brake box or while braking
It is dynamic.
The one-level arrestment mechanism, including be vertically movable mass, respectively with mass upper and lower ends be connected lead
To sliding bar 25 and rack sliding bar 22, the upper vertical guide pad 271 being fixed on mass on square box is by inner circular aperture
To being oriented to the vertical guiding of sliding bar 25, sagging on mass lower square box is fixed on to guide pad 272 by inner circular aperture pair
The vertical guiding of rack sliding bar 22, the guiding that upper balancing spring 26 is set between vertical guide pad 271 and mass 24 is slided
In lever 25；Lower balancing spring 23 is set on mass 24 and the sagging rack sliding bar 22 between guide pad 272；Rack
Sliding bar 22 is provided with the transition gear 21 engaged with rack sliding bar 22 close to the side of guide rail, and transition gear 21 is close to guide rail
Side is provided with the band finger cam 19 engaged with transition gear 21；Clamp segment with finger cam 19 is stayed when non-brake and between guide rail
There is gap, the clamp segment with finger cam is rotated to gapless between guide rail and clamping guide-rail during braking；
The one-level arrestment mechanism is mechanical acceleration induction mechanism, in the common of upper and lower balancing spring and gravity
Under effect, mass can be kept in the balance of vertical direction.
In the one-level arrestment mechanism, when lift car accelerates to run up in the process of running or accelerates fortune downwards
During row, the up or down sync plus white operation of brake box can be driven, due to the effect of mass inertia force, mass can be caused
There is a reverse displacement.The moving belt carry-over bar sliding bar of mass so that transition gear is rotated, and then drive band finger cam
Rotate, it is final to cause with finger cam clamp segment closer or far from guide rail.According to《GB/T 10058-2009 elevator technology conditions》Can
Know, the rated acceleration and braking deceleration maximum of passenger lift not should be greater than 1.5m/s2.And when suspension strop is broken
Or relaxation situation when, the acceleration that lift car and brake box decline will be close to acceleration of gravity (9.8m/s2, about
6.5 times of elevator design peak acceleration), more than elevator design acceleration.Therefore, appropriate balancing spring and matter can be chosen
Gauge block, is realized when elevator acceleration is less than 1.5m/s2When, the anglec of rotation with finger cam produced by mass inertia displacement compared with
Small, cam clamp segment will not be adjacent to guide rail；And it is more than 1.5m/s when elevator declines acceleration2When, band finger cam rotates extremely just
Gapless and clamping guide-rail between clamp segment and guide rail.Now, symmetrical two bands finger cam is adjacent to guide rail, goes into one
" V " font, if brake box continues to decline, will further be pressed from both sides with finger cam under frictional force and the collective effect of spring force
Tight guide rail, finally causes brake box to slow down decline and even directly stop.
Horizontally-guided block 7 provided with horizontally-guided hole of the two stage braking mechanism including the upper vertical top of guide pad 271,
Contiguous block 11, upper end and the contiguous block 11 that caliper 8, upper end and the caliper 8 of the horizontal movement in horizontally-guided block are hinged
Lower end is hinged and the J-shaped moving block 13 at pin joint by the axial limiting of connecting pin 12, and the J-shaped moving block 13 is with casing 6
Alignment pin 15 is rotary shaft and passes through the axial limiting of stop nut 14；The contiguous block 11 and J-shaped moving block 13 are located at rack
Side of the sliding bar 22 away from guide rail, the guiding piece 16 is located between rack sliding bar 22 and J-shaped moving block 13 and positioned at J-shaped
The top of base 31 of moving block 13；The guiding piece 16 and the traction pin 28 coordinate；The caliper and the case away from guide rail
Extension spring 9 is horizontally disposed between internal wall.
In the two stage braking mechanism, if not having relative displacement between brake box and lift car, caliper is being drawn
Stretch away from guide rail under the pulling force effect of spring, i.e., in elevator normal work, caliper will not clamping guide-rail；Once suspension strop is sent out
During the situation of raw fracture or relaxation, from one-level braking action result, brake box decrease speed slows down or stopped, and now
Lift car is stopped due to no run, and still accelerates to decline, lift car certainly will be caused to be produced downwards relative to brake box
Displacement, until the traction foot press of fixed traction sole on the elevator car is on the base 31 of J-shaped moving block, under elevator continues
OK so that J-shaped moving block rotates, transmitted by the motion of contiguous block so that caliper overcomes the pulling force of extension spring towards leading
Rail is moved, until compressing guide rail, finally causes car quickly to stop declining in the presence of frictional force.
The brake box 2 includes casing 6 and cover plate 4, and cover plate 4 is fixed on casing 6 with screw 5, symmetrical on the cover plate 4
Be provided with two and traction pin 28 coordinate square holes 30.
Traction pin may pass through square hole 30 and extend into brake box., can be along above and below guiding piece after drawing pin and stretching into brake box
Move freely.In elevator normal work, when lift car is up, can upwards it be moved by drawing the dynamic brake box of tape；When
When lift car is descending, due to the presence of guiding piece so that brake box is hung on traction pin, follows elevator synchronously downward along guide rail
Motion.
The lower section of J-shaped moving block 13 is provided with buffer plate 17.After caliper 8 compresses guide rail 1, to J-shaped moving block
13 tail ends play support and motion cushioning effect.
The vertical height for drawing pin is more than the spacing at traction sole end and the top of buffer plate 17.It can so prevent from drawing pin
Skidded off from guiding piece 16.
The transition gear 21 by center the axially position of transition gear axle 20, with finger cam 19 by center cam orientation
The axially position of axle 18.
The casing center of the brake box is provided with the fluting 32 with guide rail.
The seal face of the clamp segment with finger cam 19 and/or caliper 8 is provided with annular knurl.To increase rubbing for clamp segment
Wipe power.
The tail end of caliper 8 has hanging hole 33, and the cabinet wall away from guide rail is provided with spring carrier arm 10, the He of hanging hole 33
Extension spring 9 is provided between spring carrier arm 10.
The traction sole 3 is by through hole 29 and is bolted to lift car side.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, all those of ordinary skill in the art without departing from disclosed spirit with being completed under technological thought
All equivalent modifications or change, should by the present invention claim be covered.
Claims (9)
1. a kind of mechanical automatic unlocking elevator safety gear, is slidably connected with the guide rail of elevator, it is characterised in that：Including brake box
(2), it is fixed on the traction sole (3) of lift car side, the traction sole and is provided through brake box to brake box inside
The traction pin (28) that guiding piece (16) is drawn, the brake box (2) is internal to be symmetrical set one-level braking on guide rail
Mechanism, two stage braking mechanism and guiding piece (16)；
The one-level arrestment mechanism, including be vertically movable mass (24), respectively with mass upper and lower ends be connected lead
To sliding bar (25) and rack sliding bar (22), the upper vertical guide pad (271) being fixed on mass on square box is by interior
Portion's circular hole is to being oriented to sliding bar (25) vertical guiding, and be fixed on mass lower square box sagging passes through to guide pad (272)
Inner circular aperture is set in vertical guide pad (271) and quality to rack sliding bar (22) vertical guiding, upper balancing spring (26)
On guiding sliding bar (25) between block (24)；Lower balancing spring (23) is set in mass (24) and sagging to guide pad
(272) on the rack sliding bar (22) between；Rack sliding bar (22) is provided with and rack sliding bar (22) close to the side of guide rail
The transition gear (21) of engagement, transition gear (21) is provided with the band finger cam engaged with transition gear (21) close to the side of guide rail
(19)；Clamp segment with finger cam (19) leaves gap when non-brake and between guide rail, the clamp segment with finger cam during braking
Rotation gapless and clamping guide-rail extremely between guide rail；
The two stage braking mechanism include upper vertical guide pad (271) above the horizontally-guided block (7) provided with horizontally-guided hole,
Contiguous block (11), upper end and connection that caliper (8), upper end and the caliper (8) of the horizontal movement in horizontally-guided block are hinged
The lower end of block (11) is hinged and the J-shaped moving block (13) at pin joint by connecting pin (12) axial limiting, the J-shaped moving block
(13) it is rotary shaft with the alignment pin (15) on casing (6) and passes through stop nut (14) axial limiting；The contiguous block (11)
It is located at side of the rack sliding bar (22) away from guide rail with J-shaped moving block (13), the guiding piece (16) is located at rack sliding bar
(22) between J-shaped moving block (13) and above the base (31) of J-shaped moving block (13)；The guiding piece (16) and described
Pin (28) is drawn to coordinate；Extension spring is horizontally disposed between the cabinet wall of the caliper and remote guide rail.
2. mechanical automatic unlocking elevator safety gear according to claim 1, it is characterised in that：Brake box (2) bag
Include the symmetrical square holes (30) for being provided with two and traction pin (28) cooperation on casing (6) and cover plate (4), the cover plate (4).
3. mechanical automatic unlocking elevator safety gear according to claim 1, it is characterised in that：The J-shaped moving block
(13) lower section is provided with buffer plate (17).
4. mechanical automatic unlocking elevator safety gear according to claim 3, it is characterised in that：Draw the vertical height of pin
More than the spacing at traction sole end and buffer plate (17) top.
5. mechanical automatic unlocking elevator safety gear according to claim 1, it is characterised in that：The transition gear (21)
Transition gear axle (20) axially position by center, with finger cam (19) by center cam orientation axle (18) axially position.
6. mechanical automatic unlocking elevator safety gear according to claim 1, it is characterised in that：The casing of the brake box
Center is provided with the fluting (32) with guide rail.
7. mechanical automatic unlocking elevator safety gear according to claim 1, it is characterised in that：The band finger cam (19)
Clamp segment and/or caliper (8) seal face be provided with annular knurl.
8. mechanical automatic unlocking elevator safety gear according to claim 1, it is characterised in that：Caliper (8) tail
There is hanging hole (33) at end, and the cabinet wall away from guide rail is provided with spring carrier arm (10), the hanging hole (33) and spring carrier arm (10) it
Between be provided with extension spring (9).
9. mechanical automatic unlocking elevator safety gear according to claim 1, it is characterised in that：The traction sole (3)
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 |
|---|---|
| CN105438916A CN105438916A (en) | 2016-03-30 |
| CN105438916B true CN105438916B (en) | 2017-10-17 |
Family
ID=55549643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511005413.XA Expired - Fee Related CN105438916B (en) | 2015-12-28 | 2015-12-28 | Mechanical automatic unlocking elevator safety gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105438916B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106927331B (en) * | 2017-04-13 | 2022-10-28 | 台州市特种设备检验检测研究院 | Speed-limiting anti-falling device for elevator transformation |
| CN107500075B (en) * | 2017-08-18 | 2018-08-14 | 刘英辉 | A kind of Lift car type elevator speed-limiting device |
| CN109665405B (en) * | 2018-12-10 | 2020-06-30 | 深圳资深投资管理有限公司 | High-sensitivity fully passive anti-stall elevator |
| CN110723406A (en) * | 2019-10-29 | 2020-01-24 | 佛山科学技术学院 | Pop-top can cap |
| CN112603236B (en) * | 2020-11-26 | 2022-11-15 | 青岛中科智能光电产业研究院有限公司 | Multi-angle wireless visual laryngoscope |
| 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 |
| 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 |
| CN115180479B (en) * | 2022-08-22 | 2024-02-20 | 重庆能源职业学院 | Mechanical locking device of elevator without machine room |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0769558A (en) * | 1993-09-07 | 1995-03-14 | Toshiba Corp | Hydraulic elevator |
| FR2792923B1 (en) * | 1999-04-29 | 2001-07-13 | Sodimas | PARACHUTE DEVICE, PARTICULARLY FOR ELEVATOR AND ELEVATOR THUS EQUIPPED |
| CN2455677Y (en) * | 2000-08-31 | 2001-10-24 | 刘金陆 | Anti-dropping safety device for elevator and lift apparatus with T-shaped guide railing |
| CN101354066A (en) * | 2007-07-23 | 2009-01-28 | 李允旺 | Wedge-shaped brake mechanism driven by gear rack |
| CN104326322B (en) * | 2014-10-16 | 2016-09-14 | 杭州沪宁电梯部件股份有限公司 | A kind of weightless safety tongs |
| CN105151945A (en) * | 2015-08-19 | 2015-12-16 | 成都广迈科技有限公司 | Safety tongs for elevator |
-
2015
- 2015-12-28 CN CN201511005413.XA patent/CN105438916B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN105438916A (en) | 2016-03-30 |
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