CN114275646B - Stable elevator safety tongs capable of reducing equipment loss - Google Patents
Stable elevator safety tongs capable of reducing equipment loss Download PDFInfo
- Publication number
- CN114275646B CN114275646B CN202111562244.5A CN202111562244A CN114275646B CN 114275646 B CN114275646 B CN 114275646B CN 202111562244 A CN202111562244 A CN 202111562244A CN 114275646 B CN114275646 B CN 114275646B
- Authority
- CN
- China
- Prior art keywords
- safety tongs
- fixedly connected
- block
- equipment loss
- initial
- 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.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Abstract
The invention relates to the technical field of elevator safety tongs, and discloses a stable elevator safety tongs capable of reducing equipment loss, which comprises a guide rail, wherein a safety tongs mechanism is sleeved on the outer side of the guide rail, the safety tongs mechanism comprises an initial tong, the bottom of the initial tong is riveted with a variable tong, the inside of the initial tong is slidably connected with a fixed wedge block and a movable wedge block, the outer side of the movable wedge block is hinged with a connecting rod, the inside of the connecting rod is slidably connected with a hinge block, and the outer side of the safety tongs mechanism is provided with a control mechanism. This can reduce stable elevator safety tongs of equipment loss through changing the triggering condition of kicking block, when needs extension braking distance, buffer spring gives the elasticity increase of kicking block, and under the elevator same speed, synchronous ascending movable wedge quantity reduces, and the quantity of movable wedge increases on the contrary to reached the braking that can be applicable to different environment, convenient to use's effect.
Description
Technical Field
The invention relates to the technical field of elevator safety tongs, in particular to a stable elevator safety tongs capable of reducing equipment loss.
Background
The elevator is a transportation device for vertically transporting pedestrians or cargoes, the elevator safety tongs are a device which can clamp the guide rail and brake the elevator at the same time when the elevator suddenly appears and firmly clamp the elevator on the guide rail, the safety tongs are usually matched with the speed limiter for use, when the elevator operates at overspeed, the speed limiter starts to pull up a pull rod of the safety tongs, so that the safety tongs clamp the guide rail to brake the elevator car, and the traditional safety tongs are divided into instantaneous type and progressive type.
When the elevator safety tongs are braked, in order to improve the braking range, a plurality of groups of safety tongs are generally used for braking in a multi-stage mode, but when the existing safety tongs are braked in a multi-stage mode, the initial safety tongs are stressed first, so that the initial safety tongs are excessively worn, the service life is short, the braking distance is increased, the equipment loss is increased, meanwhile, the braking environment of the existing safety tongs is limited, the elevator safety tongs cannot be applied to elevators in different occasions, and the elevator safety tongs are inconvenient to use.
Disclosure of Invention
In order to realize the purposes that the braking progression can be automatically adjusted according to the gravity of the elevator, the braking is stable, the equipment loss is reduced, the device is suitable for braking in different environments, the use is convenient, the guide rail can be automatically cleaned, and the service life of the safety tongs is prolonged, the invention is realized by the following technical scheme: the utility model provides a can reduce stable elevator safety tongs of equipment loss, includes the guide rail, safety tongs mechanism has been cup jointed in the outside of guide rail, safety tongs mechanism includes initial pincers, the bottom riveting of initial pincers has variable pincers, the inside sliding connection of initial pincers has fixed wedge and movable wedge, just fixed wedge is located the top of movable wedge, the back fixedly connected with speed limit rope of movable wedge, the outside of movable wedge articulates there is the connecting rod, the inside sliding connection of connecting rod has the hinge piece, the inside fixedly connected with electro-magnet of hinge piece, the inside sliding connection of hinge piece has the pull rod, the outside sliding connection of hinge piece has splint, one side fixedly connected with reset spring that the splint is close to the pull rod, control mechanism is installed in the outside of safety tongs mechanism, control mechanism includes the control shell, the outside fixedly connected with scraper of control shell, the inside fixedly connected with detection wheel of control shell, the front fixedly connected with centrifugation wheel of detection wheel, the inside sliding connection of centrifugation wheel has the centrifugation piece, the inside sliding connection of centrifugation piece is close to one side of centrifugation piece center of centrifugation piece has the hinge piece, one side of control board is close to the inside sliding connection of control spring, one side of the control board is kept away from the fixed connection of the buffer spring, one side is kept away from the fixed connection of the buffer spring.
Further, the outside threaded connection of initial pincers has the bolt, the bolt is close to the inside one side joint of initial pincers has the backup pad, the outside fixedly connected with supporting spring of backup pad, supporting spring with fixed voussoir fixed connection.
Furthermore, the internal structures of the variable pliers and the initial pliers are the same, the number of the variable pliers can be increased according to the needs, the application range of the device is wider, and the movable wedges in the adjacent variable pliers are uniformly connected through the connecting rod transmission.
Furthermore, a tooth slot is formed in the connecting rod.
Further, the hinge block is fixedly connected to the movable wedge block in the variable clamp, and transmission is stable.
Furthermore, the outside of splint is provided with the clamp tooth, uses with the tooth's socket cooperation, improves the centre gripping stability.
Further, the guide slot is formed in the control shell, and the ejector block and the adjusting plate are slidably connected in the guide slot, so that the ejector block is stable in sliding.
Further, the centrifugal blocks are divided into six groups and are uniformly distributed in the centrifugal wheel, so that the top blocks can be driven to stably slide when the centrifugal blocks rotate.
Furthermore, the adjusting rod is connected to the outer side of the control shell through threads, and is convenient to adjust.
Compared with the prior art, the invention has the following beneficial effects:
1. the elevator safety tongs capable of reducing equipment loss are operated at an overspeed, the elevator drives the safety tongs to slide, the safety tongs drives the control mechanism to slide, the control mechanism drives the detection wheel to move, the detection wheel rotates under the action of the guide rail, the detection wheel drives the centrifugal wheel to rotate, the centrifugal wheel enables the jacking block to touch the control switch, the control switch enables the electromagnet to generate magnetic force, the electromagnet drives the pull rod to slide, the pull rod drives the clamping plate to slide, the clamping plate enables the hinging block and the connecting rod to be mutually fixed through the clamping teeth and the tooth grooves, the speed limiter enables the speed limiting rope to tighten, the speed limiting rope drives the movable wedge on the initial tongs to lift, the movable wedge is clamped on the guide rail under the action of the fixed wedge, meanwhile, the movable wedges on the initial tongs drive the movable wedge on the variable tongs to synchronously lift through the connecting rod and the hinging block, the elevator is heavier, the dropping speed is faster, the number of the control switches triggered by the jacking block is larger, the number of the movable wedges which synchronously lift is higher, the same in braking distance of the elevator is ensured, and the effect of automatically adjusting the braking stages according to the gravity of the elevator is achieved, and braking stability is achieved, and equipment loss is reduced.
2. This can reduce equipment loss's stable elevator safety tongs, through rotating the regulation pole, it slides to adjust the pole drive regulating plate, and the regulating plate makes buffer spring give the elasticity of kicking block change, makes the trigger condition of kicking block change, when needs extension braking distance, buffer spring gives the elasticity increase of kicking block, and under the elevator same speed, synchronous ascending movable wedge quantity reduces, and the quantity of movable wedge increases on the contrary to reached the braking that can be applicable to different environment, convenient to use's effect.
3. This can reduce stable elevator safety tongs of equipment loss drives safety tongs mechanism through the elevator and removes on the guide rail, and safety tongs mechanism drives the control shell and removes on the guide rail, and the control shell passes through the scraper in the outside, scrapes cement piece and impurity on the guide rail, makes cement piece and impurity can not contact with movable wedge to reached and can self-cleaning guide rail, increased safety tongs life's effect.
Drawings
FIG. 1 is a schematic axial side view of the overall structure of the present invention;
FIG. 2 is a schematic rear view of the entire structure of the present invention;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2 showing the structure of the present invention;
FIG. 4 is a schematic diagram of a structural control mechanism according to the present invention;
FIG. 5 is a schematic cross-sectional view of the structural control mechanism of the present invention.
In the figure: 1. a safety tongs mechanism; 11. an initial clamp; 12. a variable clamp; 13. a bolt; 14. a support plate; 15. a support spring; 16. a fixed wedge; 17. a movable wedge; 18. a speed limiting rope; 19. a connecting rod; 110. a hinge block; 111. an electromagnet; 112. a pull rod; 113. a clamping plate; 114. a return spring; 2. a control mechanism; 21. a control housing; 22. a scraper; 23. a detection wheel; 24. a centrifugal wheel; 25. a centrifugal block; 26. a centrifugal spring; 27. a top block; 28. a control switch; 29. a buffer spring; 210. an adjusting plate; 211. an adjusting rod; 3. and a guide rail.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The example of the stable elevator safety gear capable of reducing equipment loss is as follows:
referring to fig. 1-5, a stable elevator safety tongs capable of reducing equipment loss comprises a guide rail 3, wherein a safety tongs mechanism 1 is sleeved on the outer side of the guide rail 3, the safety tongs mechanism 1 comprises an initial tongs 11, a bolt 13 is connected to the outer side of the initial tongs 11 in a threaded manner, a supporting plate 14 is clamped on one side, close to the inner part of the initial tongs 11, of the bolt 13, a supporting spring 15 is fixedly connected to the outer side of the supporting plate 14, the supporting spring 15 is fixedly connected with a fixed wedge 16, a variable tongs 12 is riveted at the bottom of the initial tongs 11, flanges are arranged on the outer sides of the variable tongs 12 and the initial tongs 11, connection is facilitated, the internal structures of the variable tongs 12 and the initial tongs 11 are identical, the number of the variable tongs 12 is increased according to requirements, the application range of the elevator safety tongs is wider, and movable wedges 17 in the adjacent variable tongs 12 are uniformly connected through a connecting rod 19 in a transmission manner.
The inside sliding connection of initial pincers 11 has fixed wedge 16 and movable wedge 17, and fixed wedge 16 is located the top of movable wedge 17, the back fixedly connected with speed limit rope 18 of movable wedge 17, the outside of movable wedge 17 articulates there is connecting rod 19, the tooth's socket has been seted up to the inside of connecting rod 19, the inside sliding connection of connecting rod 19 has hinge piece 110, hinge piece 110 fixed connection is on the movable wedge 17 in the inside of variable pincers 12, the transmission is stable, the inside fixedly connected with electro-magnet 111 of hinge piece 110, electro-magnet 111 establishes ties with control switch 28 through the wire, the inside sliding connection of hinge piece 110 has pull rod 112, the outside sliding connection of hinge piece 110 has splint 113, the outside of splint 113 is provided with the clamp tooth, use with the tooth's socket cooperation, improve clamping stability, one side fixedly connected with reset spring 114 that splint 113 is close to pull rod 112.
The control switch 28 enables the electromagnet 111 to be electrified to generate magnetic force, the electromagnet 111 drives the pull rod 112 to slide, the pull rod 112 drives the clamping plate 113 to slide, the clamping plate 113 enables the hinge block 110 and the connecting rod 19 to be mutually fixed through the clamping teeth and the tooth grooves, and whether the movable wedge block 17 synchronously moves or not can be achieved according to whether the hinge block 110 is connected with the connecting rod 19 or not, and adjustment is convenient.
The control mechanism 2 is installed in the outside of safety tongs mechanism 1, and control mechanism 2 includes control shell 21, and the guide way has been seted up to the inside of control shell 21, and kicking block 27 and regulating plate 210 all sliding connection are inside the guide way, make kicking block 27 slide stably, and the outside fixedly connected with scraper 22 of control shell 21.
When the elevator normally operates, the elevator drives the safety tongs mechanism 1 to move on the guide rail 3, the safety tongs mechanism 1 drives the control shell 21 to move on the guide rail 3, the control shell 21 scrapes off cement blocks and impurities on the guide rail 3 through the scraper 22 on the outer side, the cement blocks and the impurities are prevented from contacting the movable wedge blocks 17, and the service life of the safety tongs is prolonged.
The inside fixedly connected with detection wheel 23 of control shell 21, the front fixedly connected with centrifugation wheel 24 of detection wheel 23, the inside sliding connection of centrifugation wheel 24 has centrifugal piece 25, centrifugal piece 25 divide into six groups, and evenly distributed is in the inside of centrifugation wheel 24, when making centrifugal piece 25 rotate, can drive kicking block 27 and stably slide, centrifugal piece 25 is close to the one side fixedly connected with centrifugal spring 26 at the center of centrifugation wheel 24, the inner wall sliding connection of control shell 21 has kicking block 27, the inner wall fixedly connected with control switch 28 of control shell 21, one side fixedly connected with buffer spring 29 of kicking block 27 keep away from centrifugation wheel 24, one side fixedly connected with regulating plate 210 of buffer spring 29 keep away from the kicking block 27, one side joint that regulating plate 210 kept away from buffer spring 29 has regulation pole 211, regulation pole 211 threaded connection is in the outside of control shell 21, be convenient for adjust.
The adjusting lever 211 is rotated, the adjusting lever 211 drives the adjusting plate 210 to slide, the adjusting plate 210 increases the elasticity given to the top block 27 by the buffer spring 29, the centrifugal force required for touching the top block 27 increases, and the number of movable wedges 17 for synchronous braking decreases, so that the braking distance of the elevator increases, otherwise, the elasticity given to the top block 27 by the buffer spring 29 decreases, so that the device can be suitable for different running environments.
Working principle: when the elevator normally operates, the elevator drives the safety tongs mechanism 1 to move on the guide rail 3, the safety tongs mechanism 1 drives the control shell 21 to move on the guide rail 3, the control shell 21 scrapes off cement blocks and impurities on the guide rail 3 through the scraper 22 on the outer side, the cement blocks and the impurities are prevented from contacting the movable wedge blocks 17, and the service life of the safety tongs is prolonged.
When the elevator runs at an overspeed, the elevator drives the safety tongs mechanism 1 to slide rapidly, the safety tongs mechanism 1 drives the control mechanism 2 to slide, the control mechanism 2 drives the detection wheel 23 to move, the detection wheel 23 rotates under the action of the guide rail 3, the detection wheel 23 drives the centrifugal wheel 24 to rotate, the centrifugal wheel 24 drives the centrifugal block 25 to rotate, the centrifugal block 25 slides towards the outer side of the centrifugal wheel 24 under the action of centrifugal force, the centrifugal block 25 pushes the top block 27 to slide, the top block 27 touches the control switch 28, the control switch 28 enables the electromagnet 111 to generate magnetic force, the electromagnet 111 drives the pull rod 112 to slide, the pull rod 112 drives the clamping plate 113 to slide, the clamping plate 113 enables the hinge block 110 and the connecting rod 19 to be mutually fixed through the clamping teeth and the tooth grooves, at this time, the speed limiter tightens the speed limiting rope 18, the speed limiting rope 18 drives the movable wedge blocks 17 on the initial clamp 11 to ascend, the movable wedge blocks 17 are clamped on the guide rail 3 under the action of the fixed wedge blocks 16, meanwhile, the movable wedge blocks 17 on the initial clamp 11 and the hinge blocks 110 drive the movable wedge blocks 17 on the variable clamp 12 to synchronously ascend through the connecting rods 19, a plurality of groups of movable wedge blocks 17 are simultaneously clamped on the guide rail 3, the heavier the elevator is, the faster the descending speed is, the more the number of control switches 28 triggered by the jacking blocks 27 is, the more the number of the movable wedge blocks 17 which synchronously ascend is, the same braking distance of the elevator is ensured, and meanwhile, the equipment loss can be reduced.
When the running environment of the elevator is changed and the braking distance needs to be increased, the adjusting lever 211 is rotated, the adjusting lever 211 drives the adjusting plate 210 to slide, the adjusting plate 210 enables the elastic force of the buffer spring 29 to be given to the top block 27 to be increased, the centrifugal force required for touching the top block 27 is increased, the number of movable wedges 17 for synchronous braking is reduced, and therefore the braking distance of the elevator is increased, otherwise, the elastic force of the buffer spring 29 to be given to the top block 27 is reduced, and the device can be suitable for different running environments.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. Stable elevator safety tongs capable of reducing equipment loss, comprising a guide rail (3), and being characterized in that: safety tongs mechanism (1) has been cup jointed in the outside of guide rail (3), safety tongs mechanism (1) include initial pincers (11), the bottom riveting of initial pincers (11) has variable pincers (12), the inside sliding connection of initial pincers (11) has fixed wedge (16) and movable wedge (17), just fixed wedge (16) are located the top of movable wedge (17), the back fixedly connected with speed limit rope (18) of movable wedge (17), the outside of movable wedge (17) articulates there is connecting rod (19), the inside sliding connection of connecting rod (19) has hinge piece (110), the inside fixedly connected with electro-magnet (111) of hinge piece (110), the inside sliding connection of hinge piece (110) has pull rod (112), the outside sliding connection of hinge piece (110) has splint (113), one side fixedly connected with reset spring (114) that splint (113) are close to pull rod (112), control mechanism (2) are installed in the outside of safety tongs mechanism (1), control mechanism (2) are including control shell (21), control shell (21) are connected with scraper (21) in the fixed connection, the detection wheel (23) is characterized in that the front surface of the detection wheel (23) is fixedly connected with a centrifugal wheel (24), the centrifugal wheel (24) is internally and slidably connected with a centrifugal block (25), one side of the centrifugal block (25) close to the center of the centrifugal wheel (24) is fixedly connected with a centrifugal spring (26), the inner wall of the control shell (21) is slidably connected with a top block (27), the inner wall of the control shell (21) is fixedly connected with a control switch (28), one side of the top block (27) away from the centrifugal wheel (24) is fixedly connected with a buffer spring (29), one side of the buffer spring (29) away from the top block (27) is fixedly connected with an adjusting plate (210), and one side of the adjusting plate (210) away from the buffer spring (29) is clamped with an adjusting rod (211).
2. A stabilized elevator safety gear with reduced equipment loss according to claim 1, characterized in that: the outside threaded connection of initial pincers (11) has bolt (13), one side joint that bolt (13) are close to the inside of initial pincers (11) has backup pad (14), the outside fixedly connected with supporting spring (15) of backup pad (14), supporting spring (15) with fixed voussoir (16) fixed connection.
3. A stabilized elevator safety gear with reduced equipment loss according to claim 1, characterized in that: the internal structure of the variable clamp (12) is the same as that of the initial clamp (11), and the number of the variable clamp (12) is not less than one group.
4. A stabilized elevator safety gear with reduced equipment loss according to claim 1, characterized in that: the inside of the connecting rod (19) is provided with tooth grooves.
5. A stabilized elevator safety gear with reduced equipment loss according to claim 1, characterized in that: the hinge block (110) is fixedly connected to a movable wedge block (17) inside the variable clamp (12).
6. A stabilized elevator safety gear with reduced equipment loss according to claim 1, characterized in that: clamping teeth are arranged on the outer side of the clamping plate (113).
7. A stabilized elevator safety gear with reduced equipment loss according to claim 1, characterized in that: the inside of control shell (21) has seted up the guide way, just kicking block (27) with regulating plate (210) all sliding connection is inside the guide way.
8. A stabilized elevator safety gear with reduced equipment loss according to claim 1, characterized in that: the centrifugal blocks (25) are divided into six groups and are uniformly distributed inside the centrifugal wheel (24).
9. A stabilized elevator safety gear with reduced equipment loss according to claim 1, characterized in that: the adjusting rod (211) is connected to the outer side of the control shell (21) in a threaded mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111562244.5A CN114275646B (en) | 2021-12-20 | 2021-12-20 | Stable elevator safety tongs capable of reducing equipment loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111562244.5A CN114275646B (en) | 2021-12-20 | 2021-12-20 | Stable elevator safety tongs capable of reducing equipment loss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114275646A CN114275646A (en) | 2022-04-05 |
| CN114275646B true CN114275646B (en) | 2023-07-18 |
Family
ID=80873114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111562244.5A Active CN114275646B (en) | 2021-12-20 | 2021-12-20 | Stable elevator safety tongs capable of reducing equipment loss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114275646B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112744663B (en) * | 2021-01-21 | 2022-06-14 | 郑州铁路职业技术学院 | Vertical elevator emergency braking device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001002342A (en) * | 1999-06-21 | 2001-01-09 | Toshiba Elevator Co Ltd | Emergency stop device 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 |
| CN110436286A (en) * | 2018-05-02 | 2019-11-12 | 陕西小溪机电科技有限公司 | Towed elevator car guide rail braking system and its detection method |
| CN112520529A (en) * | 2020-11-30 | 2021-03-19 | 泰州鸿材科技有限公司 | Elevator safety tongs that can be used to multiple orbit |
| CN213085114U (en) * | 2020-09-15 | 2021-04-30 | 深圳圣达电梯有限公司 | Elevator safety tongs |
-
2021
- 2021-12-20 CN CN202111562244.5A patent/CN114275646B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001002342A (en) * | 1999-06-21 | 2001-01-09 | Toshiba Elevator Co Ltd | Emergency stop device 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 |
| CN110436286A (en) * | 2018-05-02 | 2019-11-12 | 陕西小溪机电科技有限公司 | Towed elevator car guide rail braking system and its detection method |
| CN213085114U (en) * | 2020-09-15 | 2021-04-30 | 深圳圣达电梯有限公司 | Elevator safety tongs |
| CN112520529A (en) * | 2020-11-30 | 2021-03-19 | 泰州鸿材科技有限公司 | Elevator safety tongs that can be used to multiple orbit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114275646A (en) | 2022-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101759076B (en) | Elevator buffer | |
| CN114275646B (en) | Stable elevator safety tongs capable of reducing equipment loss | |
| AU2013242674B2 (en) | A fall prevention brake buffering system for high-speed mine lift | |
| JP2003509314A (en) | Method of braking traction sheave elevator, use of traction sheave elevator, and use of emergency power supply | |
| CN2721586Y (en) | Bidirectional speed limited safety pliers for elevator | |
| CN204873326U (en) | Elevator overspeed governor | |
| CN108100804B (en) | Car braking system | |
| CN1789102A (en) | Elevator overspeed protecting device | |
| CN204434020U (en) | Ultra-Low Speed Anti-falling safety device for construction lift | |
| CN204150849U (en) | Be applicable to the modulated brake power formula gradual anti-falling safety device that the main limb of support body makes guide rail | |
| CN202529673U (en) | Gravity eccentric shaft type safety tongs | |
| CN2793028Y (en) | Up-ward overspeed protective jacked rope mechanism of elevator cage | |
| CN204079150U (en) | A kind of Novel elevator falling prevention device | |
| CN209522438U (en) | A kind of high stability elevator governor of two staged braking | |
| CN208666904U (en) | It is a kind of for lifting the squash type stone tongs of aluminium sheet | |
| CN110550555A (en) | Anti-falling mechanism suitable for suspended type vertical fin dock | |
| CN105435381A (en) | Automatic-control constant-speed descending device | |
| CN209778000U (en) | Automatic anti-falling safety tongs for elevator | |
| CN204211432U (en) | A kind of circuit breaker lift car | |
| CN111365689B (en) | Intelligent elevator system | |
| CN211004245U (en) | Anti-falling mechanism suitable for suspended type vertical fin dock | |
| CN103272339B (en) | High-altitude abseiling device and abseiling system | |
| CN203724653U (en) | Portable high-rise building slowly-descending escape device | |
| CN205222339U (en) | Speed limiter of elevator | |
| CN201367885Y (en) | Long-stroke dragging oil extractor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | 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 |