CN111977486A - Elevator safety arrangement - Google Patents
Elevator safety arrangement Download PDFInfo
- Publication number
- CN111977486A CN111977486A CN201911298067.7A CN201911298067A CN111977486A CN 111977486 A CN111977486 A CN 111977486A CN 201911298067 A CN201911298067 A CN 201911298067A CN 111977486 A CN111977486 A CN 111977486A
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- elevator
- connecting rod
- permanent magnet
- plate
- fixedly connected
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- 230000002265 prevention Effects 0.000 claims abstract description 12
- 230000005389 magnetism Effects 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 11
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 2
- 230000003139 buffering effect Effects 0.000 abstract description 8
- 230000005484 gravity Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
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
- B66B5/02—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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The invention relates to the technical field of elevator security devices, in particular to an elevator safety protection device, which comprises an elevator body arranged in an elevator shaft, wherein the bottom of the elevator body is provided with a falling prevention device, and the falling prevention device comprises a falling trigger mechanism and a falling prevention execution mechanism; the falling trigger mechanism comprises a shell, a plurality of supporting pieces and a plurality of supporting pieces, wherein the supporting pieces are arranged on the periphery of the shell, a vertically arranged second connecting rod is fixedly connected to the bottom surface of the limiting plate, and a plurality of fourth connecting rods which are inclined and upwards arranged are connected to the bottom end of the second connecting rod in a circumferential rotating mode. The device utilizes a full-mechanical mode to complete the buffering and clamping fixation of the elevator, the stability coefficient is higher, and the device starts to prevent falling when the elevator falls, so that the elevator can be prevented from falling in time, and the safety of passengers is better protected.
Description
Technical Field
The invention relates to the technical field of elevator security devices, in particular to an elevator security device.
Background
In the working process of the elevator, if the lifting device breaks down, the elevator stops moving if the lifting device breaks down, and falls if the lifting device breaks down, so that life threat is brought to passengers.
People can all set up buffer at the elevartor shaft bottom now, and when the elevator falls, the elevator drops and cushions on buffer, reduces the danger when falling, but this kind of buffer has following drawback: 1. the higher the floor is, the poorer the buffering effect of the buffering device is, and when the elevator falls from an overhigh position, the buffering device exceeds the buffering bearing upper line under the action of gravity and is directly damaged, so that the buffering effect is very little; 2. the buffer device can not be started immediately along with the damage moment of the elevator, only can be buffered passively, and can not be started actively, so that the buffer device can not play a role in protection at the first time.
Disclosure of Invention
The invention aims to solve the defect that an elevator buffer device in the prior art is poor in use effect, and provides an elevator safety protection device.
In order to achieve the purpose, the invention adopts the following technical scheme:
designing an elevator safety protection device, which comprises an elevator body arranged in an elevator shaft, wherein the bottom of the elevator body is provided with a falling prevention device, and the falling prevention device comprises a falling trigger mechanism and a falling prevention actuating mechanism;
the falling trigger mechanism comprises a shell and a plurality of supporting pieces, the supporting pieces are arranged on the periphery of the shell, the shell and the supporting piece are fixedly connected at the bottom of the elevator body through the supporting rod, a limiting plate capable of sliding up and down is arranged in the shell, a first spring is arranged between the top surface of the limit plate and the top wall of the shell, the top surface of the limit plate is fixedly connected with a first connecting rod which is vertically arranged, the top end of the first connecting rod is fixedly connected with an umbrella-shaped plate with a downward opening, the bottom surface of the limiting plate is fixedly connected with a second connecting rod which is vertically arranged, the bottom end of the second connecting rod is connected with a plurality of fourth connecting rods which are arranged obliquely and upwards in a circumferential rotating way, the top end of each fourth connecting rod is connected with a third connecting rod which is arranged horizontally in a rotating way, one end of the third connecting rod, which is far away from the second connecting rod, is fixedly connected with a horizontally arranged magnetic blocking piece, and the magnetic blocking piece is connected in a first slide way horizontally arranged on the side surface of the supporting piece in a sliding manner;
The supporting piece is fixedly connected with a first permanent magnet which is arranged above the first slideway, a second slideway is arranged in the supporting piece and is arranged below the first slideway, a second permanent magnet capable of sliding up and down is arranged in the second slideway, the second permanent magnet is positioned right below the first permanent magnet, the magnetism of the upper part of the second permanent magnet is opposite to that of the lower part of the first permanent magnet, the upper surface of the second permanent magnet is provided with first teeth, the upper part of one side of the second slideway far away from the second connecting rod is connected with a horizontally arranged clamping block in a sliding way, the bottom surface of the clamping block is provided with a second tooth which is buckled with the first tooth, one side of the supporting piece away from the second connecting rod is provided with a fixed pulley, the horizontal distance between the fixed pulley and the supporting piece is greater than the length of the clamping block, the tail end of the clamping block is fixedly connected with a pull rope, and the pull ropes arranged at the tail ends of the clamping blocks on the plurality of supporting pieces are connected with the weight blocks by bypassing the fixed pulley;
the anti-falling actuating mechanism comprises a horizontally arranged bottom plate, the bottom plate is fixedly connected to the bottom of an elevator body through a support rod, a horizontally arranged flat plate is arranged above the bottom plate and is suspended below a weight block through a flexible rope, a plurality of symmetrical connecting rod assemblies are arranged in the circumferential direction of the flat plate, each connecting rod assembly comprises a fifth connecting rod, the fifth connecting rods are rotatably connected to the side surfaces of the flat plate, the fifth connecting rods are arranged obliquely and downwards, the bottom ends of the fifth connecting rods are rotatably connected with sliding blocks, the sliding blocks are slidably connected into dovetail-shaped sliding grooves formed in the bottom plate, one ends, away from the flat plate, of the sliding blocks are fixedly connected with horizontally arranged push rods, the end parts of the push rods are fixedly connected with vertically arranged push plates, one surfaces, away from the push rods, of the push plates are connected with vertically arranged friction plates, the friction plate is long-strip-shaped and is arranged along the height direction of the elevator shaft, and when the weight falls on the flat plate, the fifth connecting rod and the push rod move to the same water line.
Preferably, the magnetic force barrier is a magnetic isolation plate.
Preferably, the magnetic force blocking member is a third permanent magnet, the upper magnetism of the third permanent magnet is the same as the lower magnetism of the first permanent magnet, and the lower magnetism of the third permanent magnet is the same as the upper magnetism of the second permanent magnet.
Preferably, a plurality of guide rods vertically arranged are fixedly connected to the bottom plate, and the guide rods sequentially penetrate through the flat plate and the heavy blocks.
Preferably, a plurality of vertically arranged airflow through holes are formed in the bottom plate.
Preferably, the bottom of the elevator shaft is provided with an elastic buffer mechanism.
Preferably, the elastic buffer mechanism is one or a combination of a spring, a cylinder, an air bag and an elastic rubber block.
The elevator safety protection device provided by the invention has the beneficial effects that: the device utilizes a full-mechanical mode to complete the buffering and clamping fixation of the elevator, the stability coefficient is higher, and the device starts to prevent falling when the elevator falls, so that the elevator can be prevented from falling in time, and the safety of passengers is better protected.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the fall trigger mechanism of the present invention in an unactuated state;
FIG. 3 is a schematic structural view of a fall trigger mechanism of the present invention in a triggered state;
fig. 4 is a schematic structural diagram of the fall-prevention actuating mechanism of the invention.
In the figure: the elevator comprises a limiting plate 1, a first spring 2, a first connecting rod 3, an umbrella-shaped plate 4, a shell 5, a second connecting rod 6, a magnetic force blocking piece 7, a supporting piece 8, a first permanent magnet 9, a first slide way 10, a clamping block 11, a fixed pulley 12, a pull rope 13, a second permanent magnet 14, a second slide way 15, a third connecting rod 16, a fourth connecting rod 17, an elevator body 18, a supporting rod 19, a weight 20, a guide rod 21, a bottom plate 22, an airflow through hole 23, a flat plate 24, a fifth connecting rod 25, a push plate 26, a friction plate 27, a second spring 28, a push rod 29 and a sliding block 30.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, an elevator safety protection device comprises an elevator body 18 arranged in an elevator shaft, wherein a falling prevention device is arranged at the bottom of the elevator body 18 and comprises a falling trigger mechanism and a falling prevention execution mechanism;
the falling trigger mechanism comprises a shell 5 and a plurality of supporting pieces 8, the plurality of supporting pieces 8 are arranged on the periphery of the shell 5, the shell 5 and the supporting pieces 8 are fixedly connected at the bottom of an elevator body 18 through supporting rods 19, a limiting plate 1 capable of sliding up and down is arranged in the shell 5, a first spring 2 is arranged between the top surface of the limiting plate 1 and the top wall of the shell 5, the first spring 2 is a compression spring, the top surface of the limiting plate 1 is fixedly connected with a vertically arranged first connecting rod 3, the top end of the first connecting rod 3 is fixedly connected with an umbrella-shaped plate 4 with a downward opening, the bottom surface of the limiting plate 1 is fixedly connected with a vertically arranged second connecting rod 6, the bottom end of the second connecting rod 6 is circumferentially and rotatably connected with a plurality of fourth connecting rods 17 which are obliquely and upwardly arranged, the top end of the fourth connecting rod 17 is rotatably connected with a horizontally arranged third connecting rod, the magnetic force blocking piece 7 is connected in a first slide way 10 horizontally arranged on the side surface of the supporting piece 8 in a sliding way;
A first permanent magnet 9 is fixedly connected to the support member 8, the first permanent magnet 9 is arranged above the first slide way 10, a second slide way 15 is arranged inside the support member 8, the second slide way 15 is arranged below the first slide way 10, a second permanent magnet 14 capable of sliding up and down is arranged inside the second slide way 15, the second permanent magnet 14 is positioned under the first permanent magnet 9, the magnetism of the upper part of the second permanent magnet 14 is opposite to that of the lower part of the first permanent magnet 9, first teeth are arranged on the upper surface of the second permanent magnet 14, a horizontally arranged clamping block 11 is slidably connected to the upper part of one side, away from the second connecting rod 6, of the second slide way 15, second teeth buckled with the first teeth are arranged on the bottom surface of the clamping block 11, a fixed pulley 12 is arranged on one side, away from the second connecting rod 6, of the support member 8, the horizontal distance between the fixed pulley 12 and the support member 8 is greater than the length of the clamping block 11, a pull rope 13 is fixedly connected to the tail end of the clamping block 11, and a pull rope;
the anti-falling actuating mechanism comprises a bottom plate 22 which is horizontally arranged, the bottom plate 22 is fixedly connected to the bottom of an elevator body 18 through a support rod 19, a flat plate 24 which is horizontally arranged is arranged above the bottom plate 22, the flat plate 24 is suspended under a heavy block 20 through a flexible rope, a plurality of connecting rod assemblies which are symmetrically arranged are circumferentially arranged on the flat plate 24, each connecting rod assembly comprises a fifth connecting rod 25, the fifth connecting rods 25 are rotatably connected to the side surfaces of the flat plate 24, the fifth connecting rods 25 are obliquely and downwards arranged, the bottom ends of the fifth connecting rods 25 are rotatably connected with sliding blocks 30, the sliding blocks 30 are slidably connected in dovetail-shaped sliding grooves formed in the bottom plate 22, one ends, far away from the flat plate 24, of the sliding blocks 30 are fixedly connected with horizontally arranged push rods 29, the end parts of the push rods 29 are fixedly connected with vertically arranged push plates 26, one surfaces, the friction plate is long and long, the weight 20 is dropped on the flat plate 24, the fifth connecting rod 25 and the push rod 29 move to the same water line, the dead point position is formed in this state, the push plate 26 and the friction plate 27 are connected through the second spring 28 for better designing the dead point position, when the push plate is installed, the push rod 29, the slide block 30, the fifth connecting rod 25 and the flat plate 24 are firstly placed on the same plane, then the friction plate 27 is tightly attached to the friction plate of the elevator shaft wall, the distance between the push plate 26 and the friction plate 27 at the moment is recorded as the minimum length after the second spring 28 is compressed, then the flat plate 24 is pulled up, the second spring 28 is installed between the push plate 26 and the friction plate 27, the bottom plate 22 is fixedly connected with a plurality of vertically arranged guide rods 21, the guide rods 21 sequentially penetrate through the flat plate 24 and the weight 20, and the bottom plate 22 is provided with a plurality of vertically arranged air flow through holes 23.
The working principle is as follows: referring to fig. 2, in an initial state, the teeth on the upper surface of the second permanent magnet 14 are engaged with the teeth on the lower surface of the engaging block 11, so that the engaging block 11 is tightly attached to the supporting member 8, and the weight 20 is suspended in the air by attracting the second permanent magnet 14 through the first permanent magnet 9 by using the principle that the magnetic forces are opposite to each other;
when the elevator normally descends, airflow blows on the umbrella-shaped plate 4 to provide an upward force for the umbrella-shaped plate 4, the umbrella-shaped plate 4 has a tendency of moving upwards, the first spring 2 is arranged at the upper part of the limiting plate 1, the first spring 2 provides a downward thrust for the limiting plate 1, the force generated by the airflow is absorbed by the elastic force of the first spring 2, and the second connecting rod 6 can only slightly move;
referring to fig. 3 and 1, when the elevator rapidly falls, a strong airflow impacts the bottom of the umbrella-shaped plate 4, the force generated by the airflow overcomes the elastic force of the first spring 2, the second connecting rod 6 moves upwards, the connecting rod assembly pushes the magnetic force blocking member 7 to move towards the middle of the first permanent magnet 9 and the second permanent magnet 14 under the action of the connecting rod assembly, if the magnetic force blocking member 7 is a magnetic isolation plate, the magnetic force between the first permanent magnet 9 and the second permanent magnet 14 is weakened or even blocked by the magnetic force blocking member 7, the second permanent magnet 14 falls under the action of gravity, at the moment, the weight 20 drives the clamping block 11 to be separated from the support member 8, the weight 20 is hammered on the flat plate 24, referring to fig. 4, after the weight 20 is hammered on the flat plate 24, the flat plate 24 moves downwards, the connecting rod assembly pushes the fifth connecting rod 25 to move, the sliding block 30 is pushed outwards by the fifth connecting rod 25, the friction plate 27 which moves outwards is extruded with the friction plate, the friction force is generated to prevent the elevator from continuously falling, the flat plate 24 falls on the bottom plate 22, the push rod 29, the sliding block 30, the fifth connecting rod 25 and the flat plate 24 are located on the same straight line, and at the moment, the state is a dead point position, so that the sliding block 30 is effectively prevented from rebounding to move.
The device utilizes a full-mechanical mode to complete the buffering and clamping fixation of the elevator, the stability coefficient is higher, and the device starts to prevent falling when the elevator falls, so that the elevator can be prevented from falling in time, and the safety of passengers is better protected.
The mode of magnetic force separation in the second is adopted, magnetic force separation piece 7 is the third permanent magnet, third permanent magnet upper portion magnetism is the same with first permanent magnet 9 lower part magnetism, third permanent magnet lower part magnetism is the same with second permanent magnet 14 upper portion magnetism, when the third permanent magnet is inserted between first permanent magnet 9, second permanent magnet 14, utilize the principle that like poles repel each other, promote second permanent magnet 14 downstream through the third permanent magnet, make second permanent magnet 14 break away from with joint piece 11.
In order to further ensure the safety of personnel in the elevator, the bottom of the elevator shaft is provided with an elastic buffer mechanism which is one or a combination of a spring, a cylinder, an air bag and an elastic rubber block.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any technical solutions, concepts and designs obtained by equivalent substitutions or changes of the technical solutions and the inventive concepts of the present invention by those skilled in the art within the technical scope of the present invention shall be covered by the scope of the present invention.
Claims (7)
1. An elevator safety protection device comprises an elevator body (18) arranged in an elevator shaft, wherein a falling prevention device is arranged at the bottom of the elevator body (18), and is characterized by comprising a falling triggering mechanism and a falling prevention executing mechanism;
the falling trigger mechanism comprises a shell (5) and a plurality of supporting pieces (8), the supporting pieces (8) are arranged on the periphery of the shell (5), the shell (5) and the supporting pieces (8) are fixedly connected to the bottom of an elevator body (18) through supporting rods (19), a limiting plate (1) capable of sliding up and down is arranged inside the shell (5), a first spring (2) is arranged between the top surface of the limiting plate (1) and the top wall of the shell (5), a first connecting rod (3) which is vertically arranged is fixedly connected to the top surface of the limiting plate (1), an umbrella-shaped plate (4) with a downward opening is fixedly connected to the top end of the first connecting rod (3), a second connecting rod (6) which is vertically arranged is fixedly connected to the bottom surface of the limiting plate (1), a plurality of fourth connecting rods (17) which are obliquely and upwardly arranged are circumferentially and rotatably connected to the bottom ends of the second connecting rods (6), and a third connecting rod (16) which is, one end of the third connecting rod (16) far away from the second connecting rod (6) is fixedly connected with a horizontally arranged magnetic blocking piece (7), and the magnetic blocking piece (7) is connected in a first slide way (10) horizontally arranged on the side surface of the supporting piece (8) in a sliding manner;
The upper fixed connection of support piece (8) has first permanent magnet (9), first permanent magnet (9) sets up in first slide (10) top, second slide (15) have been seted up to support piece (8) inside, second slide (15) set up in first slide (10) below, inside second permanent magnet (14) that can slide from top to bottom that is equipped with of second slide (15), second permanent magnet (14) are located under first permanent magnet (9), and second permanent magnet (14) upper portion magnetism is opposite with first permanent magnet (9) lower part magnetism, second permanent magnet (14) upper surface is equipped with first tooth, second slide (15) keep away from joint piece (11) that the one side upper portion sliding connection of second connecting rod (6) has the level to set up, joint piece (11) bottom surface is equipped with the second tooth that buckles mutually with first tooth, one side that second connecting rod (6) was kept away from to support piece (8) is equipped with fixed pulley (12), the horizontal distance between the fixed pulley (12) and the supporting pieces (8) is greater than the length of the clamping blocks (11), pull ropes (13) are fixedly connected to the tail ends of the clamping blocks (11), and the pull ropes (13) arranged at the tail ends of the clamping blocks (11) on the supporting pieces (8) are connected with the heavy blocks (20) by bypassing the fixed pulley (12);
the anti-falling actuating mechanism comprises a bottom plate (22) which is horizontally arranged, the bottom plate (22) is fixedly connected to the bottom of an elevator body (18) through a supporting rod (19), a flat plate (24) which is horizontally arranged is arranged above the bottom plate (22), the flat plate (24) is suspended under a heavy block (20) through a flexible rope, a plurality of connecting rod assemblies which are symmetrically arranged are circumferentially arranged on the flat plate (24), each connecting rod assembly comprises a fifth connecting rod (25), the fifth connecting rods (25) are rotatably connected to the side surfaces of the flat plate (24), the fifth connecting rods (25) are obliquely and downwardly arranged, the bottom ends of the fifth connecting rods (25) are rotatably connected with sliding blocks (30), the sliding blocks (30) are slidably connected into dovetail-shaped sliding grooves which are formed in the bottom plate (22), one ends, far away from the flat plate (24), of the sliding blocks (30) are fixedly connected with horizontally arranged push rods (29), and end parts of the push plates (26, the one side that push rod (29) were kept away from in push pedal (26) is connected with friction disc (27) of vertical setting through second spring (28), and the elevartor shaft inner wall is equipped with the friction plate that uses with friction disc (27) cooperation, the friction plate is rectangular form, and long banding friction plate sets up along the elevartor shaft direction of height, and when pouring weight (20) fell on dull and stereotyped (24), fifth connecting rod (25), push rod (29) moved on same water line.
2. A fall arrest mechanism for elevators according to claim 1, characterized in that the magnetic force barrier (7) is a magnetic shield.
3. A fall arrest device for elevators according to claim 1, characterized in that the magnetic force blocking member (7) is a third permanent magnet having an upper magnetic part identical to the lower magnetic part of the first permanent magnet (9) and a lower magnetic part identical to the upper magnetic part of the second permanent magnet (14).
4. An elevator fall-prevention mechanism as claimed in claim 1, characterized in that the bottom plate (22) is fixedly connected with a plurality of vertically arranged guide rods (21), and the guide rods (21) sequentially penetrate through the flat plate (24) and the weight (20).
5. The elevator fall prevention mechanism according to claim 1, characterized in that the bottom plate (22) is provided with a plurality of vertically arranged air flow holes (23).
6. An elevator fall arrest mechanism according to claim 1, characterized in that the bottom of the elevator shaft is provided with a resilient buffer mechanism.
7. The elevator fall prevention mechanism according to claim 6, characterized in that the elastic buffer mechanism is one or a combination of a spring, a cylinder, an air bag and an elastic rubber block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911298067.7A CN111977486A (en) | 2019-12-17 | 2019-12-17 | Elevator safety arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911298067.7A CN111977486A (en) | 2019-12-17 | 2019-12-17 | Elevator safety arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111977486A true CN111977486A (en) | 2020-11-24 |
Family
ID=73442133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911298067.7A Withdrawn CN111977486A (en) | 2019-12-17 | 2019-12-17 | Elevator safety arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111977486A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112707266A (en) * | 2020-12-22 | 2021-04-27 | 住友富士电梯有限公司 | Safe elevator that can prevent falling |
| CN114314249A (en) * | 2022-01-18 | 2022-04-12 | 浙江西沃电梯有限公司 | Elevator outer frame stall protection device |
-
2019
- 2019-12-17 CN CN201911298067.7A patent/CN111977486A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112707266A (en) * | 2020-12-22 | 2021-04-27 | 住友富士电梯有限公司 | Safe elevator that can prevent falling |
| CN112707266B (en) * | 2020-12-22 | 2022-04-22 | 住友富士电梯有限公司 | A safe and fall-proof elevator |
| CN114314249A (en) * | 2022-01-18 | 2022-04-12 | 浙江西沃电梯有限公司 | Elevator outer frame stall protection device |
| CN114314249B (en) * | 2022-01-18 | 2023-09-26 | 浙江西沃电梯有限公司 | Outer frame stall protection device of elevator |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20201124 |