CN108100804B - Car braking system - Google Patents
Car braking system Download PDFInfo
- Publication number
- CN108100804B CN108100804B CN201711364260.7A CN201711364260A CN108100804B CN 108100804 B CN108100804 B CN 108100804B CN 201711364260 A CN201711364260 A CN 201711364260A CN 108100804 B CN108100804 B CN 108100804B
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- braking
- brake
- braking device
- car
- plate
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- 230000007704 transition Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 210000001624 hip Anatomy 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
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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
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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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
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/044—Mechanical overspeed governors
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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
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/282—Structure thereof
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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
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/284—Buffer-stops for cars, cages, or skips mounted on cars or counterweights
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The utility model relates to the technical field of elevators, in particular to a car braking system, which comprises a car and a well, wherein the car is arranged in the well, a guide rail for the car to move up and down is arranged in the well, the car further comprises a braking box and a double braking device, the double braking device is arranged in the braking box, the double braking device comprises a well braking device and a guide rail braking device, the guide rail braking device is positioned below the well braking device, and the guide rail braking device is driven to brake when the well braking device brakes; the elevator control system also comprises a speed sensor and a controller, wherein the speed sensor is fixed on the elevator driver; the signal input end of the controller is connected with the signal output end of the speed sensor, and the signal output end of the controller is electrically connected with the well braking device; the double braking of the inner wall of the well and the guide rail can be realized by only one power device, and the buffer device can be started while braking, so that the impact force of the car when the car lands is reduced.
Description
Technical Field
The utility model relates to the technical field of elevators, in particular to a car braking system.
Background
The elevator is a lifting mechanism taking a motor as power, a steel wire rope drives a car to carry personnel and materials, the elevator slide is most frequently failed in the use process, particularly the car is overweight, the motor belt does not move the car to ascend, the car can control a safety tongs to clamp a guide rail in the acceleration descending process, but the goods are heavier, the guide rail is formed by connecting a plurality of sections of guide rails, so that the bearing capacity of the guide rail is limited, and the elevator can be braked effectively only by carrying out additional braking protection simultaneously. In the utility model patent with the patent application number of 201420741952.4, a brake skin is pressed down by a pressure transmission rod, so that friction is generated between the brake skin and the inner wall of a well for braking, but the braking mode is single, and the braking effect cannot be achieved without lasting and stable pressure. The last line of defense of elevator is the buffer of well bottom, and when the elevator was out of control at the end of squatting, the buffer can cushion the car, but still has avoided the injury of inside personnel, if can reduce its in-process that can fall out of control at the car, can alleviate personnel's injury, therefore how to carry out the braking of slowing down to the car when the elevator is out of control is a key problem.
Disclosure of Invention
The utility model provides a lift car and a lift well with double braking functions, which can realize double braking on the inner wall of the lift well and guide rails by only one power device, and can start a buffer device while braking so as to reduce the impact force of the lift car when the lift car lands.
In order to solve the technical problems, the utility model provides a car braking system which comprises a car and a well, wherein the car is arranged in the well, a guide rail for the car to move up and down is arranged in the well,
the double braking device is arranged in the braking box, the double braking device comprises a well braking device and a guide rail braking device, the guide rail braking device is positioned below the well braking device, and the guide rail braking device is driven to brake when the well braking device brakes;
the elevator control system also comprises a speed sensor and a controller, wherein the speed sensor is fixed on the elevator driver; the signal input end of the controller is connected with the signal output end of the speed sensor, and the signal output end of the controller is electrically connected with the well braking device.
When the car falls, the speed sensor detects the speed change and then sends a signal to the controller, the controller sends an execution signal, the hoistway braking device brakes, and the hoistway braking device drives the guide rail braking device to start working.
Preferably, the well braking device comprises a hydraulic cylinder, a lifting block, a linkage rod and a braking plate, wherein the hydraulic cylinder is fixed at the top of the braking box, the power output end of the hydraulic cylinder is connected with the top of the lifting block, two sides of the lifting block are respectively and movably connected with one end of the braking plate through the linkage rod, and the other end of the braking plate is hinged on the inner wall of the braking box; the side of the brake box is provided with a window for the brake plate to rotate.
Preferably, two sides of the lifting block are wedge-shaped surfaces;
the guide rail braking device comprises a moving rod and a clamping block; the movable rod is connected to the bottom of the brake box in a sliding mode, the clamping block is arranged at one end, facing the guide rail, of the movable rod, and a clamping groove used for clamping the guide rail is formed in the clamping block.
Preferably, the width of the clamping groove gradually decreases from outside to inside.
Preferably, a roller is provided at the other end of the moving rod.
Preferably, the brake plate comprises a connecting plate and a brake part, wherein the connecting plate and the brake part are connected through a section of bent transition part, and the connecting plate is hinged above the window.
Preferably, the brake part includes a mounting plate and a brake pad provided on the mounting plate.
Preferably, the mounting plate is provided with a slot, the brake block is arranged in the slot through a plugboard, the plugboard is I-shaped, and the brake block is arranged on the plugboard.
Preferably, friction plates matched with the brake plates for braking are arranged on the inner wall of the well.
Preferably, the device further comprises a buffer device, wherein the buffer device comprises a spring and a buffer plate, the spring is connected to the lower part of the lifting block, and the buffer plate is connected to the spring; the bottom of the brake box is provided with a bottom plate, and a through hole for the buffer plate to pass through is formed in the bottom plate below the lifting block.
The beneficial effects are that:
the elevator car is provided with the double braking device, and only one power device is needed to perform double braking, the braking device is divided into the elevator shaft braking device and the guide rail braking device, when the elevator car descends in an accelerating way, the hydraulic cylinder of the elevator shaft braking device pushes the lifting block downwards, one end of the braking plate connected with the linkage rod approaches to the side wall of the elevator shaft, and the friction is generated on the inner wall of the elevator shaft to perform braking; when the lifting block descends, the side surface contacts with the moving rod, the moving rod is pushed to the guide rail, the clamping block clamps the guide rail to brake, and the two types of braking simultaneously and effectively slow down the speed of the car; and the lifting block is connected with a buffer device to reduce the impact generated by the direct grounding of the car.
The two sides of the lifting block are wedge-shaped surfaces which can gradually contact with the moving rod in the descending process to push the moving rod out; the connecting plate of the brake plate is connected with the brake part through a section of bent transition part, so that the brake part is closer to the inner wall of the well during braking; the brake block is inserted into the slot of the mounting plate through the insertion plate, so that the brake block is convenient to replace; the buffer device has simple structure and convenient operation; the friction plate matched with the brake plate for braking is arranged on the inner wall of the well, and the friction plate is matched with the brake plate, so that the braking effect is better; the width of the clamping groove is gradually reduced from outside to inside, so that the guide rail can be gradually clamped; in the descending process of the lifting block, one end of the moving rod, which is in contact with the moving rod, is provided with a roller, and the roller can reduce sliding friction between the moving rod and the roller, so that the moving rod is pushed to be more labor-saving.
Drawings
FIG. 1 is a schematic structural view of a dual braking device;
FIG. 2 is a state diagram of the dual braking device in use;
FIG. 3 is a schematic structural view of a brake housing;
FIG. 4 is a schematic structural view of a brake plate;
FIG. 5 is a schematic cross-sectional view of a brake;
FIG. 6 is a cross-sectional view of the rail brake assembly of FIG. 2 taken along the direction A-A;
the drawings are marked: 1-car, 2-rail, 3-hoistway, 4-hoistway brake, 5-rail brake, 6-brake box, 7-buffer, 41-hydraulic cylinder, 42-lifting block, 43-linkage rod, 44-brake plate, 51-moving rod, 52-clamp block, 53-roller, 521-clamp slot, 61-window, 62-bottom plate, 63-through opening, 71-spring, 72-buffer plate, 441-connecting plate, 442-transition portion, 443-brake portion, 4431-mounting plate, 4432-brake pad, 4433-slot, 4434-insert plate.
Detailed Description
Embodiments of the present utility model are further described below with reference to the accompanying drawings.
A car braking system comprises a car 1 and a well 3, wherein the car 1 is arranged in the well 3, and a guide rail 2 for the car 1 to move up and down is arranged in the well 3; the device comprises a well brake device 4 and a guide rail brake device 5, wherein the guide rail brake device 5 is positioned below the well brake device 4, and the guide rail brake device 5 is driven to brake when the well brake device 4 brakes;
the elevator driving device comprises an elevator driving device, a speed sensor and a controller, wherein the speed sensor is fixed on an elevator driving device; the signal input end of the controller is connected with the signal output end of the speed sensor, and the signal output end of the controller is electrically connected with the well braking device.
When the car 1 falls, the speed sensor detects the speed change and then sends a signal to the controller, the controller sends an execution signal, the hoistway braking device brakes, and the hoistway braking device drives the guide rail braking device to start working.
In this embodiment, the mounting position of the brake plate is considered to be a position where the brake plate does not collide with the guide rail in the hoistway during braking; the well braking device 4 comprises a hydraulic cylinder 41, a lifting block 42, a linkage rod 43 and a braking plate 44, wherein the hydraulic cylinder 41 is fixed at the top of the braking box 6, the power output end of the hydraulic cylinder 41 is connected with the top of the lifting block 42, two sides of the lifting block 42 are respectively and movably connected with one end of the braking plate 44 through the linkage rod 43, namely, one end of the linkage rod 43 is hinged on the lifting block 42, the other end of the linkage rod 42 is hinged on the braking plate 44, and the other end of the braking plate 44 is hinged on the inner wall of the braking box 6; the side of the brake housing 6 is provided with a window 61 for rotation of the brake plate 44. The two sides of the lifting block 8 are wedge-shaped surfaces, the lifting block with the isosceles trapezoid longitudinal section can be optimally selected, the waist is positioned at the two sides, the shorter bottom edge is positioned at the lower part, and the two sides are symmetrical, so that the braking on the guide rails at the two sides can be synchronously performed;
the guide rail braking device 5 comprises a moving rod 51 and a clamping block 52; the movable rod 51 is slidably connected to the bottom of the brake box 6, the clamping block 52 is disposed at one end of the movable rod 4 facing the guide rail 2, and a clamping groove 521 for clamping the guide rail 2 is formed in the clamping block 52. The width of the clamping groove 521 gradually decreases from outside to inside, so that the guide rail can be gradually clamped; the other end of the moving rod 51 is provided with a roller 53, and the roller can reduce sliding friction between the roller and the moving rod, so that the force is saved when the moving rod is pushed; as shown in fig. 4, the brake plate 44 includes a connection plate 441 and a brake portion 443, the connection plate 441 and the brake portion 443 are connected by a curved transition portion 442, so that the brake pad protrudes more towards the inner wall of the hoistway relative to the car, and thus a good braking effect can be achieved, and the connection plate 441 is hinged above the window 61; as shown in fig. 5, the braking portion 443 includes a mounting plate 4431 and a brake pad 4432, and the brake pad 4432 is provided on the mounting plate 4431; the mounting plate 4431 is provided with a slot 4433, the brake pad 4432 is mounted in the slot 4433 through the plug board 4434, the plug board 4434 is I-shaped, and the brake pad 4432 is arranged on the plug board 4434, so that the brake pad can be replaced conveniently. The friction plate matched with the brake plate 44 for braking is arranged on the inner wall of the well, and the friction plate can be made of a material with a large friction coefficient with the brake plate, and is matched with the brake plate, so that the braking effect is better;
the buffer device 7 is also included to reduce the impact generated by the direct grounding of the car 1; the buffer device comprises a spring 71 and a buffer plate 72, wherein the spring 71 is connected to the lower part of the lifting block 42, and the buffer plate 72 is connected to the spring 71; as shown in fig. 3, a bottom plate 62 is provided at the bottom of the brake box 6, and a through hole 63 through which the buffer plate 72 passes is provided in the bottom plate 62 below the lifting block 42.
When the descending speed of the car exceeds a set value, the speed sensor collects data and transmits signals to the controller, the controller controls the hydraulic cylinder 41 to push the lifting block 42 downwards, the lifting block 42 drives one end of the linkage rods 43 at two sides to downwards, the linkage rods 43 push the brake plate 44 out of the inner wall of the hoistway, namely, one end, connected with the linkage rods 43, of the brake plate 44 rotates around the other end serving as an axis, and the brake plate 4432 is gradually close to the inner wall of the hoistway 3; the lifting block 42 contacts the gradually moving rod 51 downwards in a wedge-shaped surface manner, the moving rod 51 is pushed to the guide rail 2, the clamping groove 521 of the clamping block 52 is clamped on the guide rail 2, the relative movement between the car 1 and the guide rail 2 is slowed down, and two braking modes can be carried out by only one hydraulic cylinder 41; as shown in fig. 2, the lifting block 42 gradually pushes the buffer plate 72 out of the through-hole 63 of the buffer box 6 while descending, so that the buffer plate 72 releases a certain impact force by landing before the car lands, and gradually compresses the spring 71 upward to buffer the car 1.
The above description of the specific embodiments of the present utility model has been given by way of example only, and the present utility model is not limited to the above description of the specific embodiments. Any equivalent modifications and substitutions for the present utility model will occur to those skilled in the art, and are also within the scope of the present utility model. Accordingly, equivalent changes and modifications are intended to be included within the scope of the present utility model without departing from the spirit and scope thereof.
Claims (7)
1. The utility model provides a car braking system, includes car (1) and well (3), car (1) set up in well (3), be equipped with in well (3) and supply guide rail (2) of car (1) operation from top to bottom, its characterized in that:
the automatic braking device comprises a shaft braking device (4), a guide rail braking device (5), a brake box (6) and a double braking device, wherein the double braking device is arranged in the brake box (6), the double braking device comprises the shaft braking device (4) and the guide rail braking device (5), the guide rail braking device (5) is positioned below the shaft braking device (4), and the guide rail braking device (5) is driven to brake when the shaft braking device (4) brakes;
the elevator control system also comprises a speed sensor and a controller, wherein the speed sensor is fixed on the elevator driver; the signal input end of the controller is connected with the signal output end of the speed sensor, and the signal output end of the controller is electrically connected with the well braking device;
when the lift car (1) falls, the speed sensor detects the speed change and then sends a signal to the controller, the controller sends an execution signal, the hoistway braking device (4) brakes, and the hoistway braking device (4) drives the guide rail braking device (5) to start working;
the well braking device (4) comprises a hydraulic cylinder (41), a lifting block (42), a linkage rod (43) and a braking plate (44), wherein the hydraulic cylinder (41) is fixed at the top of the braking box (6), the power output end of the hydraulic cylinder (41) is connected with the top of the lifting block (42), two sides of the lifting block (42) are respectively movably connected with one end of the braking plate (44) through the linkage rod (43), one end of the linkage rod (43) is hinged to the lifting block 42, the other end of the linkage rod (43) is hinged to the braking plate (44), and the other end of the braking plate (44) is hinged to the inner wall of the braking box (6); a window (61) for the rotation of the brake plate (44) is arranged on the side surface of the brake box (6);
two sides of the lifting block (42) are wedge-shaped surfaces; the lifting blocks (42) are lifting blocks with isosceles trapezoid longitudinal sections, the waists are positioned at two sides, the shorter bottom edges are positioned at the lower part, and the two sides are symmetrical to enable braking on the guide rails at two sides to be synchronously carried out;
the guide rail braking device (5) comprises a movable rod (51) and a clamping block (52); the movable rod (51) is connected to the bottom of the brake box (6) in a sliding manner, the clamping block (52) is arranged at one end of the movable rod (51) facing the guide rail (2), and the clamping block (52) is provided with a clamping groove (521) for clamping the guide rail (2);
the device further comprises a buffer device (7), the buffer device comprises a spring (71) and a buffer plate (72), the spring (71) is connected to the lower part of the lifting block (42), and the buffer plate (72) is connected to the spring (71);
the bottom of the brake box (6) is provided with a bottom plate (62), and the bottom plate (62) below the lifting block (42) is provided with a through hole (63) for a buffer plate (72) to pass through.
2. A car braking system according to claim 1, wherein: the width of the clamping groove (521) gradually decreases from outside to inside.
3. A car braking system according to claim 2, wherein: the other end of the movable rod (51) is provided with a roller (53).
4. A car braking system according to claim 3, wherein: the brake plate (44) comprises a connecting plate (441) and a brake part (443), wherein the connecting plate (441) and the brake part (443) are connected through a section of bent transition part (442), and the connecting plate (441) is hinged above the window (61).
5. A car braking system according to claim 4 wherein: the braking portion (443) includes a mounting plate (4431) and a brake pad (4432), and the brake pad (4432) is provided on the mounting plate (4431).
6. A car braking system according to claim 5 wherein: the mounting plate (4431) is provided with a slot (4433), the brake piece (4432) is arranged in the slot (4433) through a plugboard (4434), the plugboard (4434) is I-shaped, and the brake piece (4432) is arranged on the plugboard (4434).
7. A car braking system according to claim 6 wherein: and friction plates matched with the brake plates (44) for braking are arranged on the inner wall of the well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711364260.7A CN108100804B (en) | 2017-12-18 | 2017-12-18 | Car braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711364260.7A CN108100804B (en) | 2017-12-18 | 2017-12-18 | Car braking system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108100804A CN108100804A (en) | 2018-06-01 |
| CN108100804B true CN108100804B (en) | 2024-03-12 |
Family
ID=62209759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711364260.7A Active CN108100804B (en) | 2017-12-18 | 2017-12-18 | Car braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108100804B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108837467A (en) * | 2018-06-25 | 2018-11-20 | 池州市凯盛信息技术有限公司 | A kind of high-performance has the Boxing dummy of protection effect |
| CN113581968A (en) * | 2021-07-19 | 2021-11-02 | 广东昊粤建设有限公司 | Safety protection device and method for building construction elevator |
| CN116553330B (en) * | 2023-06-25 | 2023-10-20 | 江苏爱默生电梯有限公司 | Elevator car buffer device |
| CN116556823B (en) * | 2023-07-10 | 2023-09-22 | 四川蓝海智能装备制造有限公司 | High-frequency breaking hammer and tunneling equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09156855A (en) * | 1995-12-11 | 1997-06-17 | Mitsubishi Electric Corp | Elevator device |
| CN1802306A (en) * | 2004-04-30 | 2006-07-12 | 三菱电机株式会社 | Abnormal-state braking system of elevator |
| JP2009286525A (en) * | 2008-05-27 | 2009-12-10 | Mitsubishi Electric Corp | Elevator device and braking function inspecting method thereof |
| CN202785160U (en) * | 2012-07-06 | 2013-03-13 | 滑黎明 | Lift car and protective device thereof and elevator equipment using lift car |
| CN203715030U (en) * | 2014-02-24 | 2014-07-16 | 陕西帝奥电梯有限公司 | Hydraulic elevator |
| JP2015013731A (en) * | 2013-07-05 | 2015-01-22 | 株式会社日立製作所 | Safety system for elevator |
| CN204400382U (en) * | 2014-12-31 | 2015-06-17 | 袁仪驰 | A kind of elevator emergency brake equipment and elevator |
| CN207581104U (en) * | 2017-12-18 | 2018-07-06 | 康达电梯有限公司 | A kind of car braking system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2565638C2 (en) * | 2010-05-21 | 2015-10-20 | Отис Элевэйтор Компани | Guide of sheet metal for lifting system |
-
2017
- 2017-12-18 CN CN201711364260.7A patent/CN108100804B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09156855A (en) * | 1995-12-11 | 1997-06-17 | Mitsubishi Electric Corp | Elevator device |
| CN1802306A (en) * | 2004-04-30 | 2006-07-12 | 三菱电机株式会社 | Abnormal-state braking system of elevator |
| JP2009286525A (en) * | 2008-05-27 | 2009-12-10 | Mitsubishi Electric Corp | Elevator device and braking function inspecting method thereof |
| CN202785160U (en) * | 2012-07-06 | 2013-03-13 | 滑黎明 | Lift car and protective device thereof and elevator equipment using lift car |
| JP2015013731A (en) * | 2013-07-05 | 2015-01-22 | 株式会社日立製作所 | Safety system for elevator |
| CN203715030U (en) * | 2014-02-24 | 2014-07-16 | 陕西帝奥电梯有限公司 | Hydraulic elevator |
| CN204400382U (en) * | 2014-12-31 | 2015-06-17 | 袁仪驰 | A kind of elevator emergency brake equipment and elevator |
| CN207581104U (en) * | 2017-12-18 | 2018-07-06 | 康达电梯有限公司 | A kind of car braking system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108100804A (en) | 2018-06-01 |
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