CN105819309A - Pneumatic elevator and control method - Google Patents
Pneumatic elevator and control method Download PDFInfo
- Publication number
- CN105819309A CN105819309A CN201610364649.0A CN201610364649A CN105819309A CN 105819309 A CN105819309 A CN 105819309A CN 201610364649 A CN201610364649 A CN 201610364649A CN 105819309 A CN105819309 A CN 105819309A
- Authority
- CN
- China
- Prior art keywords
- elevator
- elevator car
- car
- shaft
- pressure
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 31
- 238000005303 weighing Methods 0.000 claims description 21
- 230000000630 rising effect Effects 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 230000001174 ascending effect Effects 0.000 claims description 4
- 230000000740 bleeding effect Effects 0.000 claims description 3
- 230000005294 ferromagnetic effect Effects 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 description 14
- 238000009423 ventilation Methods 0.000 description 13
- 230000006378 damage Effects 0.000 description 9
- 238000013016 damping Methods 0.000 description 9
- 239000013589 supplement Substances 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
- B66B9/04—Kinds or types of lifts in, or associated with, buildings or other structures actuated pneumatically or hydraulically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3476—Load weighing or car passenger counting devices
- B66B1/3484—Load weighing or car passenger counting devices using load cells
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3492—Position or motion detectors or driving means for the detector
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
- B66B11/024—Ventilation systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/0423—Driving gear ; Details thereof, e.g. seals actuated pneumatically or hydraulically
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/02—Guideways; Guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B2201/00—Aspects of control systems of elevators
- B66B2201/20—Details of the evaluation method for the allocation of a call to an elevator car
- B66B2201/215—Transportation capacity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D2700/00—Capstans, winches or hoists
- B66D2700/03—Mechanisms with latches or braking devices in general for capstans, hoists or similar devices as well as braking devices actuated electrically or by fluid under pressure
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses a pneumatic elevator which is provided for mainly solving the problem that danger is prone to occurring when existing elevators drop. The pneumatic elevator comprises an elevator shaft, an elevator car and a control device. The elevator shaft comprises a lifting shaft body and a buffer shaft body. The buffer shaft body is arranged at the lower end of the lifting shaft body and connected with the lifting shaft body. The lower end of the lifting shaft body is connected with an air inflation device and an air deflation device. The bottom of the elevator car is matched with the elevator shaft in a sealed mode. The space which is located under the bottom of the elevator car in the elevator shaft is an airtight space. When the air inflation device charges air into the airtight space, the elevator car ascends. When the air deflation device deflates the airtight space, the elevator car descends. The control device is used for controlling starting and stopping of the elevator car. By adopting the pneumatic elevator, when the elevator drops, the elevator car cannot collide with other structures rigidly, and the safety coefficient is high.
Description
Technical Field
The invention relates to a lifting device for conveying personnel or goods in a building, in particular to a pneumatic elevator and a control method.
Background
With the increasing scarcity of land resources, the existing building planning is planned into a high-rise structure, and the high-rise structure can utilize the limited land resources to the maximum extent, so that the existing resources can be utilized to create the maximum value. With the development of high-rise buildings, devices for transporting people or goods to ascend and descend are widely applied, common ascending and descending devices in the prior art comprise escalators, elevators and the like, and the escalators occupy large space and need to be changed for many times when taking the escalators, so that the escalators are greatly limited in use. The elevator with the structure is mainly composed of a lift car, a balance system, a traction system, a guide system and the like, and the elevator with the structure is inevitably worn by mechanical parts after long-time running, so that when the mechanical parts are worn and the mechanical failure happens, the elevator falling event can happen, and danger is easy to happen. The form that current elevator generally adopted the band-type brake prevents falling the emergence of ladder incident, and when the elevator accident appeared, the band-type brake can lock, avoids falling the ladder, but the condition of this kind of band-type brake braking belongs to the rigidity braking, when the band-type brake locks suddenly, at first probably causes the injury to personnel in the elevator, also probably causes the damage to parts such as elevator guide rail simultaneously.
Disclosure of Invention
In order to solve the problems, the invention provides a starting lifting device capable of ensuring the safety of elevator taking personnel.
In order to achieve the purpose, the pneumatic elevator comprises more than two layers of elevator shafts, an elevator car and a control device, wherein the elevator car and the control device run up and down in the elevator shafts, the elevator shafts comprise an integrally arranged elevator shaft and a buffer shaft, and the buffer shaft is a sealing shaft positioned at the lower end of the elevator shaft; the upper end of the lifting shaft is provided with a vent, and the lower end of the lifting shaft is connected with an inflating device and an deflating device; each layer of well way is provided with an airtight elevator door;
at least the bottom of the elevator car is provided with a sealing section matched with the air seal of the elevator shaft (the air seal is relatively sealed, and air leakage is allowed under the condition that the elevator is ensured to accurately run); the space in the elevator shaft, which is lower than the bottom of the elevator car, is a closed space;
the control device is used for controlling the starting and stopping of the inflating device and the deflating device so as to enable the elevator car to reach a specified floor;
when the inflating device inflates air into the closed space and reaches the rising pressure, the elevator car rises; when the air bleeding device bleeds air from the closed space to reach a dropping pressure, the elevator car drops.
Furthermore, a weighing device for weighing the load is arranged on the elevator car; the air pressure sensor is used for measuring the pressure in the closed space, the air pressure sensor and the weighing device are in communication connection with the control device, and the control device controls the inflation device and the deflation device according to data transmitted by the weighing device and the air pressure sensor.
Specifically, the weighing device comprises a cylindrical pressure sensor arranged in the center of a bottom plate of the cage shell and a bearing plate arranged on the cylindrical pressure sensor; or,
the weighing device comprises a tension sensor arranged at the center of a top plate of the car shell and a suspension cage connected with the tension sensor.
Furthermore, a braking device is arranged on the outer side of the elevator car, a position sensor is arranged at the position, corresponding to each floor, of the elevator shaft, the position sensor is communicated with the control device, and the control device controls the braking device according to signals of the position sensor.
Specifically, the braking device comprises a plurality of sub-braking devices which are uniformly arranged along the circumferential direction of the elevator car, and each sub-braking device comprises an electromagnet, a spring and an arc-shaped braking piece; a groove is formed in a car shell of the elevator car, one end of the arc-shaped brake piece is hinged in the groove, two ends of the spring are respectively connected with the brake piece and the bottom surface of the groove, and the electromagnet is arranged on the bottom surface of the groove; when the electromagnet is powered on, the arc-shaped brake piece is sucked and completely arranged in the groove, and when the electromagnet is powered off, the arc-shaped brake piece is popped by the spring and is attached to the elevator shaft;
or the elevator shaft is a ferromagnetic pipeline, and more than one braking electromagnet or electromagnetic coil is arranged on the car shell of the elevator car.
Furthermore, the cross-section of elevator well is circular, be provided with at least one guide rib or direction spout along the axis on the elevator well lateral wall, the elevator car on correspond guide rib or direction spout be provided with direction spout or guide rib, the guide way with guide rib sliding fit.
Specifically, the elevator shaft is provided with two guide sliding grooves, the elevator car is provided with two guide ribs, the guide grooves are in insulation connection with the side wall of the elevator shaft, and the guide ribs are in insulation connection with the car shell of the elevator car; the two guide sliding grooves are respectively and electrically connected with the positive electrode and the negative electrode of the power supply, and the control device and the lighting device in the elevator car are electrically connected with the two guide ribs.
Furthermore, a ventilation opening is formed in the top of the car, a ventilation chamber is formed in the top of the elevator shaft and communicated with the outside atmosphere, two air openings of the inflation device are communicated with the bottom end of the lifting shaft and the ventilation chamber respectively, and two air openings of the deflation device are communicated with the bottom end of the lifting shaft and the ventilation chamber respectively.
Furthermore, the lower part of the buffer shaft is communicated with a fault inflation device through a pipeline, and the pipeline is provided with a one-way valve; the lower extreme of lift well still is provided with manual bleed valve.
According to the pneumatic elevator, the lifting shaft of the pneumatic elevator is damaged, when the elevator car falls down, the air pressure change in the lifting shaft is a gradual change process, so that the elevator car slowly falls, when the height of the bottom of the elevator car is lower than the damage point of the lifting shaft, a closed space is formed below the elevator car again, the elevator car stops moving after damping movement for a period of time, rigid collision cannot occur in the whole process, and harm cannot be caused to people.
The lower end of the elevator shaft of the pneumatic elevator is provided with the buffer shaft, if the inflating device is damaged or the damage point of the lifting shaft is arranged at the bottom, an elevator falling event occurs, when the bottom of the elevator car falls into the buffer shaft, the buffer shaft and the bottom of the elevator car form a closed space, and air exists in the space, so that a gas damping device is formed, and personnel in the elevator can be protected from being injured.
To achieve the above object, the present invention provides a method for controlling a pneumatic elevator, comprising: the control method comprises the following steps:
1) measuring the load in the current elevator car, and calculating the self weight of the current elevator car and the rising pressure or the falling pressure required by the load;
2) measuring the current air pressure of the closed space, and calculating the pressure difference between the current air pressure and the rising pressure or the falling pressure;
3) inflating or deflating according to the control command to control the elevator to move upwards or downwards;
4) judging whether the elevator reaches a target floor, stopping if the elevator reaches the target floor, and returning to the step 3 if the elevator does not reach the target floor;
or, the control method is as follows:
measuring the load in the current elevator car, and calculating the self weight of the current elevator car and the rising pressure or the falling pressure required by the load;
measuring the current air pressure of the closed space, and calculating the pressure difference between the current air pressure and the rising pressure or the falling pressure;
controlling the elevator to move upwards or downwards according to the control command;
calculating the amount of gas required to be filled or discharged for supplementing the pressure difference, filling or discharging the corresponding amount of gas, closing a braking device and controlling the elevator to move upwards or downwards;
measuring whether the current position of the elevator car reaches a preset floor;
when the air is inflated or deflated, the speed is reduced;
measuring whether the current position of the elevator car reaches a target floor, stopping inflating or deflating when the elevator car reaches the target position, starting a braking device, and controlling the elevator car to stop at the target position;
when ascending, the predetermined floor is the target floor-1, and when descending, the predetermined floor is the target floor-1.
According to the pneumatic elevator control method, when air is filled into the closed space, the air pressure is gradually increased, when the thrust of the air pressure to the elevator car is greater than the sum of the gravity of the elevator car and the weight of people or objects in the elevator car, the elevator car rises, and when the thrust of the air pressure to the elevator car is less than the sum of the gravity of the elevator car and the weight of people or objects in the elevator car, the elevator car descends.
Because the thrust of air pressure in the closed space is close to the sum of the bearing capacity of the elevator car and the bearing capacity of the elevator car, when the elevator shaft is damaged, the air pressure in the closed space changes in a gradual change process, so that the elevator car cannot rigidly collide with other structures, and the safety of personnel in the elevator can be protected.
Drawings
FIG. 1 is a schematic view of the pneumatic elevator of the present invention;
fig. 2 is a schematic view of the brake pads of the braking apparatus of the pneumatic elevator of the present invention engaged;
fig. 3 is a schematic view of the brake pads of the braking apparatus of the pneumatic escalator of the present invention as they are rebounded open;
FIG. 4 is a schematic view of the pneumatic escalator of the present invention with guide ribs and guide runners;
fig. 5 is an enlarged view at i of fig. 4.
Detailed Description
The invention is further described with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the pneumatic elevator of the present embodiment includes more than two elevator shafts 1, an elevator car 2 moving up and down in the elevator shafts, and a control device, where the elevator shafts 1 include an elevator shaft 101 and a buffer shaft 102 integrally provided, and the buffer shaft 102 is a sealed shaft located at a lower end of the elevator shaft 101; the upper end of the lifting hoistway 101 is provided with an air vent, the lower end of the lifting hoistway 101 is provided with an air release port and an air inflation port 103, and the air release port and the air inflation port 103 are connected with an air inflation device and an air deflation device; each layer of well way is provided with an airtight elevator door;
at least the bottom of the elevator car 2 is provided with a sealing section matched with the elevator shaft 1 in a gas sealing way (the gas sealing way is relative sealing, and gas leakage is allowed under the condition of ensuring the accurate operation of the elevator); the space in the elevator shaft 1, which is lower than the bottom of the elevator car, is a closed space;
the control device is used for controlling the starting and stopping of the inflating device and the deflating device so as to enable the elevator car to reach a specified floor;
when the inflating device inflates air into the closed space and reaches the rising pressure, the elevator car 2 rises; when the air bleeding device bleeds air from the closed space to reach a descent pressure, the elevator car 2 descends.
In this embodiment, the elevator car 2 and the elevator shaft 1 below the elevator car form a closed space, when air is charged into the closed space, the air pressure gradually increases, when the thrust of the air pressure to the elevator car 2 is greater than the sum of the gravity of the elevator car 2 and the people or objects in the car, the elevator car 2 rises, and when the thrust of the air pressure to the elevator car 2 is less than the sum of the gravity of the elevator car 2 and the gravity of the people or objects in the car, the elevator car 2 descends, and according to the above principle, the rising and the descending of the elevator car 2 can be driven by charging or discharging air into the closed space.
Because under the different circumstances of the quantity of people and goods in the elevator, the total weight of elevator car 2 is also different, consequently, when getting into personnel or putting into the goods in to the car, need be at any time for airtight space supplementary corresponding atmospheric pressure, consequently, this embodiment has set up weighing device 203 in elevator car 2 to in monitoring the total weight of personnel and article in the car at any time, supplementary atmospheric pressure at any time can guarantee elevator car 2's stability.
The pneumatic elevator of this embodiment drives the elevator car 2 up and down through the airtight space of lower part, therefore the gravity of elevator car 2 is close with the pressure that the lower part is gaseous to elevator car 2 applys all the time, and elevator car 2 is when taking place to fall the ladder, and when the lift well 101 of a certain position also takes place to destroy, the atmospheric pressure of elevator car 2 lower part is a gradual change process, makes elevator car 2 slowly descend. When the height of 2 bottoms of elevator car was less than the position that takes place to destroy, 2 below of elevator car just formed an airtight space again, and elevator car 2 can stop after one section damping motion, like this, the in-process of falling of elevator can not take place rigid contact all the time, can not form harm to the personnel.
The elevator well 1 of the pneumatic elevator of the embodiment is the buffer well 102 at the lower end, if the elevator falling event happens due to the damage of the inflating device or the damage of the bottom of the elevator well 101, when the bottom of the elevator car 2 falls into the buffer well 102, the buffer well 102 and the bottom of the elevator car 2 form a closed space, and air exists in the space, so that a gas damping device is formed, and the personnel in the elevator can be protected from being injured. In the pneumatic elevator of the embodiment, the buffer shaft 102 is arranged below the ground at the bottom of the building, so that the buffer shaft 102 is not abraded in the running process of the elevator, and the buffer shaft 102 is used for forming gas damping to bear a falling car.
Example 2
On the basis of the embodiment, the elevator car 2 comprises a car shell 201 and a weighing device arranged at the bottom of the car shell 201, an air pressure sensor is arranged in the closed space, the air pressure sensor and the weighing device are in communication connection with a control device, and the control device controls the inflation device and the deflation device according to data transmitted by the weighing device and the air pressure sensor.
The weighing device comprises a cylindrical pressure sensor 203 arranged at the center of the bottom surface of the car shell 201 and a bearing plate 202 arranged on the cylindrical pressure sensor 203;
the elevator car 2 of the embodiment is internally provided with a weighing device, the weighing device measures the current load capacity and transmits the load capacity to the control device in the process of entering and exiting the elevator car, the air pressure sensor measures the air pressure in the current closed space and transmits the measured air pressure to the control device, and the control device calculates whether air inflation or air deflation is needed according to the load capacity and the current air pressure.
The column-shaped pressure sensor 203 in the elevator car 2 of the embodiment is arranged at the center of the bottom plate of the elevator car 2, and the supporting plate 202 is arranged on the column-shaped pressure sensor 203, so that when people in the elevator are in a non-uniform distribution state, the supporting plate 202 still can transmit the weight to the center of the bottom plate of the car shell 201 through the column-shaped pressure sensor 203, and the stress point of the car shell 201 is always at the center point of the bottom plate, so the car cannot be inclined, and the car can run smoothly.
The weighing device of the embodiment can also adopt another mode: the weighing device comprises a tension sensor arranged at the center of a top plate of the car shell and a suspension cage connected with the tension sensor. This kind of mode also can weigh the load of elevator car, also can guarantee the verticality of elevator car simultaneously.
Example 3
On the basis of the above embodiment, as shown in fig. 2 to 3, a braking device is arranged outside the elevator car, a position sensor is arranged at a position of the elevator shaft corresponding to each floor, the position sensor communicates with the control device, and the control device controls the braking device according to a signal of the position sensor.
The braking devices comprise a plurality of sub-braking devices which are uniformly arranged along the circumferential direction of the elevator car 2, and each sub-braking device comprises an electromagnet, a spring 301 and an arc-shaped braking piece 302; a groove is formed in a car shell 201 of the elevator car 2, one end of the arc-shaped brake piece 302 is hinged in the groove, two ends of the spring 301 are respectively connected with the arc-shaped brake piece 302 and the bottom surface of the groove, and the electromagnet is arranged on the bottom surface of the groove; when the electromagnet is powered on, the arc-shaped brake piece 302 is attracted and is completely arranged in the groove, and when the electromagnet is powered off, the arc-shaped brake piece 302 is popped up by the spring 301 and is attached to the elevator shaft 1.
Firstly, when the braking device is not installed, the lifting speed and the stopping position of the elevator car 2 can be adjusted through the charging or discharging speed of the gas, but due to the damping characteristic of the compressed gas, the elevator car 2 is stopped at an adjusting hall level simply by charging or discharging the adjusting gas, the stopping position of the elevator car 2 cannot be accurately controlled, meanwhile, due to the damping characteristic of the compressed gas, the elevator car 2 inevitably generates damping motion during stopping, the stopping time is prolonged, therefore, the braking device is arranged for the elevator car 2, the accurate position of the elevator car 2 is measured through the position sensor, and the elevator car 2 is controlled to be stopped accurately and quickly through the braking device.
Secondly, when people want to place articles or get in and out of the elevator car 2, the total weight of the articles in the elevator car 2 is a sudden change process, and the process of air supply or air release into the closed space is a gradual change process, so that the situation that the elevator car 2 sinks suddenly can occur when the articles in the elevator car 2 or people enter the elevator car, and the situation that the elevator car 2 rises suddenly occurs when the articles are taken out or people go out of the elevator car, therefore, a braking device is arranged on the elevator, and the stability of the elevator in the processes of getting on and off the people and taking and placing the goods is ensured.
In addition, in this embodiment, there may be another embodiment in which a plurality of braking devices are provided in the elevator shaft 1, and in order to provide a braking device in the elevator shaft 1, it is necessary to provide a braking device at a position corresponding to each floor, so that the structure of the pneumatic elevator of this embodiment becomes complicated, and at the same time, the provision of a braking device in the elevator shaft 1 also tends to deteriorate the sealing performance when the elevator car 2 and the elevator shaft 1 move relative to each other. Therefore, the present embodiment adopts a method in which the braking device is provided in the elevator car 2.
The braking device of the embodiment can also adopt another mode: the elevator shaft is a ferromagnetic pipeline, and more than one braking electromagnet or electromagnetic coil is arranged on a car shell of the elevator car. When braking is needed, the electromagnet or the electromagnetic coil is electrified, and the elevator car and the elevator shaft are adsorbed together, so that the purpose of braking is achieved.
Example 4
On the basis of the above embodiment, as shown in fig. 4 to 5, the cross section of the elevator shaft 1 is circular, a rotation preventing device 4 is arranged between the elevator car and the elevator shaft, the rotation preventing device 4 includes two guide chutes 403 arranged on the elevator shaft 2 along the axial direction of the elevator shaft 1 and two guide ribs 404 arranged on the elevator car 2, the guide chutes 403 are in insulation connection with the side wall of the elevator shaft 1, and the guide ribs 404 are in insulation connection with the car shell 201 of the elevator car 2; the two guide chutes 403 are electrically connected to the positive and negative poles of the power supply, respectively, and the control device and the lighting device in the elevator car 2 are electrically connected to the two guide ribs 404.
In this embodiment, the cross section of the elevator shaft 1 is circular, and in order to prevent the elevator car 2 from rotating, which causes the doors of the elevator car 2 and the doors of the elevator shaft 1 not to align, the elevator car 2 of this embodiment is provided with two guide ribs 404, and the elevator shaft 1 is provided with two guide sliding grooves 403, so that the elevator car 2 can be prevented from rotating.
In addition, in this embodiment, the guide rib 404 and the outer side are wrapped by the guide rib insulating shell 402, the outer side of the guide chute 403 is also wrapped by the guide chute insulating shell 401, so that the guide rib 404 is insulated from the elevator car 2, the guide chute 403 is insulated from the elevator hoistway 1, and then the positive pole and the negative pole of the power supply are respectively connected with the two guide chutes 403, so that devices requiring the power supply, such as a control device, a lighting device and the like in the elevator car 2 can be connected from the two guide ribs 404 to form a loop, so that a cable reel and other devices do not need to be separately arranged, and the structure of the elevator is simple and clear.
The guide ribs and the guide grooves of the present embodiment are not limited to two, but two guide ribs and two guide grooves are required for conduction.
Example 5
The elevator shaft 1 of the present embodiment is an oval or polygonal shaft, and the oval or polygonal shaft allows the elevator car 2 to have only a freedom of vertical movement and no rotational freedom, and in the present embodiment, it is not necessary to provide the elevator car 2 with the guide rib 404 and to provide the elevator shaft 1 with the guide chute 403. Therefore, in the present embodiment, the devices requiring power consumption, such as the control device and the lighting device in the elevator car 2, need to be electrically connected to the power source through the cable, the cable may be wound around a cable drum at the bottom of the buffer shaft 102 or at the top of the elevator shaft 101, and the cable drum may be rotated in accordance with the lifting of the elevator car 2 to reel or reel the cable. The cable drum in this embodiment is preferably placed at the top of the hoistway 101 so that only gas is present in the lower part of the elevator car 2, ensuring that the elevator car 2 is always in a safe state.
The present embodiment also has a similar scheme to the above scheme: the elevator shaft 1 is circular, one guide rib 404 is arranged on the outer side of the elevator car 2, the guide chute 403 matched with the guide rib 404 is arranged in the elevator shaft 1, the elevator car 2 only has the freedom degree of rotation and vertical movement in the elevator shaft 1, the rotation freedom degree of the elevator car 2 can be eliminated even if only one guide rib 404 is arranged, at the moment, one guide rib 404 can not connect the power supply device in the elevator car 2 to a power supply, and therefore, a cable reel is required to be arranged.
Example 6
On the basis of the above embodiment, the top of the car is provided with a ventilation opening, the top of the elevator shaft 1 is provided with a ventilation chamber, the ventilation chamber is communicated with the outside atmosphere, the two air ports of the inflation device are respectively communicated with the bottom end of the lifting shaft 101 and the ventilation chamber, and the two air ports of the deflation device are respectively communicated with the bottom end of the lifting shaft 101 and the ventilation chamber.
Because the lower part of the elevator car 2 is in sealing fit with the elevator shaft 1, dust is prevented from falling between the elevator car 2 and the elevator shaft 1, so as to reduce the friction force between the elevator car 2 and the elevator shaft 1 and reduce the abrasion of the elevator car 2 and the elevator shaft 1, therefore, the ventilation chamber is arranged at the top part of the elevator shaft 1 in the embodiment, and the dust is prevented from being brought into the elevator shaft 1 due to the flow of air when the elevator ascends or descends. However, since the gas throughput of the elevator shaft 1 is large when the elevator car 2 ascends or descends, the ventilation chamber cannot timely discharge the gas or timely supplement the gas, the pressure above the elevator car 2 is greater than or less than the atmospheric pressure, and the air pressure of the elevator car 2 is unequal to the atmospheric pressure due to the communication between the inside of the elevator car 2 and the shaft space above the elevator car 2, which is disadvantageous to the physical health of passengers. Therefore, in the present embodiment, the two air ports of the inflation device are respectively communicated with the bottom end of the lifting shaft 101 and the ventilation chamber, and the two air ports of the deflation device are respectively communicated with the bottom end of the lifting shaft 101 and the ventilation chamber. When the cage is raised, the gas in the scavenging chamber is extracted to supplement the gas in the sealed space, and when the cage is lowered, the gas in the sealed space is extracted to supplement the gas in the scavenging chamber.
Example 7
On the basis of the above embodiment, the lower portion of the buffer hoistway 102 is communicated with the fault inflation device, and a one-way valve is arranged on a pipeline for communicating the buffer hoistway 102 and the fault inflation device. The lower end of the lifting well 101 is also provided with a manual air release valve.
When the elevator car 2 falls, it may happen that the bottom of the elevator car 2 engages the buffer shaft 102 after the elevator car 2 has stopped moving. When this occurs, the elevator car 2 needs to be raised again into the elevator shaft 101 before it can operate normally. This embodiment is at buffering well 102 bottom intercommunication trouble aerating device, aerifys through trouble aerating device, improves elevator car 2 to buffering well 102 in, need not to set up other mechanical device alone, simple structure, convenient to use. In addition, in order to avoid the situation that the elevator car 2 cannot provide protection when falling due to the damage of the failure inflation device, the pipeline of the embodiment is provided with the one-way valve, so that only gas can be supplemented inwards in the buffer shaft 102, but gas cannot be discharged outwards, and the protection effect of the buffer shaft 102 is always kept.
When aerating device or elevator well 1 take place to destroy, elevator car 2 takes place to fall the ladder, because the relation of gas pressure, elevator car 2 can be through damping motion back stop motion, however, the position of stop motion is uncontrollable, consequently, this embodiment sets up manual bleed valve at the lower extreme of lift well 101, if the position that elevator car 2 stopped is not convenient for rescue the personnel in the elevator, can deflate through manual bleed valve, makes elevator car 2 move to suitable position, then rescues the personnel in elevator car 2.
Example 8
The present embodiment provides a control method for a pneumatic elevator according to any one of the above embodiments, where the control method includes:
1) measuring the load in the current elevator car, and calculating the self weight of the current elevator car and the rising pressure or the falling pressure required by the load;
2) measuring the current air pressure of the closed space, and calculating the pressure difference between the current air pressure and the rising pressure or the falling pressure;
3) inflating or deflating according to the control command to control the elevator to move upwards or downwards;
4) judging whether the elevator reaches a target floor, stopping if the elevator reaches the target floor, and returning to the step 3 if the elevator does not reach the target floor;
according to the pneumatic elevator control method, when air is filled into the closed space, the air pressure is gradually increased, when the thrust of the air pressure to the elevator car is greater than the sum of the gravity of the elevator car and the gravity of people or objects in the elevator car, the elevator car rises, the pressure at the moment is rising pressure, when the thrust of the air pressure to the elevator car is less than the sum of the gravity of the elevator car and the gravity of people or objects in the elevator car, the elevator car descends, the pressure at the moment is descending pressure, and according to the principle, the rising and the descending of the elevator car can be driven by filling or discharging the air into the closed space.
Because the thrust of air pressure in the closed space is close to the sum of the bearing capacity of the elevator car and the bearing capacity of the elevator car, when the elevator shaft is damaged, the air pressure in the closed space changes in a gradual change process, so that the elevator car cannot rigidly collide with other structures, and the safety of personnel in the elevator can be protected.
Example 9
The present embodiment provides another control method for a pneumatic elevator in each embodiment, where the control method includes:
measuring the load in the current elevator car, and calculating the self weight of the current elevator car and the rising pressure or the falling pressure required by the load;
measuring the current air pressure of the closed space, and calculating the pressure difference between the current air pressure and the rising pressure or the falling pressure;
controlling the elevator to move upwards or downwards according to the control command;
calculating the amount of gas required to be filled or discharged for supplementing the pressure difference, filling or discharging the corresponding amount of gas, closing a braking device and controlling the elevator to move upwards or downwards;
measuring whether the current position of the elevator car reaches a preset floor;
when the air is inflated or deflated, the speed is reduced;
measuring whether the current position of the elevator car reaches a target floor, stopping inflating or deflating when the elevator car reaches the target position, starting a braking device, and controlling the elevator car to stop at the target position;
when ascending, the predetermined floor is the target floor-1, and when descending, the predetermined floor is the target floor-1.
The target floor in this embodiment is the floor that the personnel will arrive by taking, and from this can know, elevator car is starting to slow down speed in advance one deck in this embodiment, makes elevator car's the process of stopping become steady, simultaneously, also can make the speed that has slowed down elevator car also be favorable to the accurate of elevator car stop position.
According to the pneumatic elevator control method, when air is filled into the closed space, the air pressure is gradually increased, when the thrust of the air pressure to the elevator car is greater than the sum of the gravity of the elevator car and the gravity of people or objects in the elevator car, the elevator car rises, the pressure at the moment is rising pressure, when the thrust of the air pressure to the elevator car is less than the sum of the gravity of the elevator car and the gravity of people or objects in the elevator car, the elevator car descends, the pressure at the moment is descending pressure, and according to the principle, the rising and the descending of the elevator car can be driven by filling or discharging the air into the closed space.
Because the thrust of air pressure in the closed space is close to the sum of the bearing capacity of the elevator car and the bearing capacity of the elevator car, when the elevator shaft is damaged, the air pressure in the closed space changes in a gradual change process, so that the elevator car cannot rigidly collide with other structures, and the safety of personnel in the elevator can be protected.
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 changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (10)
1. The utility model provides a pneumatic elevator, includes elevator well more than two-layer, the elevator car and the controlling means of operation about in the elevator well, its characterized in that: the elevator shaft comprises a lifting shaft and a buffer shaft which are integrally arranged, and the buffer shaft is a sealing shaft positioned at the lower end of the lifting shaft; the upper end of the lifting shaft is provided with a vent, and the lower end of the lifting shaft is connected with an inflating device and an deflating device; each layer of well way is provided with an airtight elevator door;
a sealing section which is in air-tight fit with the elevator shaft is arranged at least at the bottom of the elevator car; the space in the elevator shaft, which is lower than the bottom of the elevator car, is a closed space;
the control device is used for controlling the starting and stopping of the inflating device and the deflating device so as to enable the elevator car to reach a specified floor;
when the inflating device inflates air into the closed space and reaches the rising pressure, the elevator car rises; when the air bleeding device bleeds air from the closed space to reach a dropping pressure, the elevator car drops.
2. The pneumatic elevator of claim 1, wherein: a weighing device for weighing the load is arranged on the elevator car; the air pressure sensor is used for measuring the pressure in the closed space, the air pressure sensor and the weighing device are in communication connection with the control device, and the control device controls the inflation device and the deflation device according to data transmitted by the weighing device and the air pressure sensor.
3. The pneumatic elevator of claim 2, wherein: the weighing device comprises a cylindrical pressure sensor arranged in the center of a bottom plate of the cage shell and a bearing plate arranged on the cylindrical pressure sensor; or,
the weighing device comprises a tension sensor arranged at the center of a top plate of the car shell and a suspension cage connected with the tension sensor.
4. A pneumatic elevator as claimed in claim 1 or 2, wherein: the elevator car outside is provided with arresting gear, the position that the elevator well corresponds every floor is provided with position sensor, position sensor with controlling means communication, controlling means is according to position sensor's signal control arresting gear.
5. The pneumatic elevator of claim 4, wherein: the braking device comprises a plurality of sub-braking devices which are uniformly arranged along the circumferential direction of the elevator car, and each sub-braking device comprises an electromagnet, a spring and an arc-shaped braking piece; a groove is formed in a car shell of the elevator car, one end of the arc-shaped brake piece is hinged in the groove, two ends of the spring are respectively connected with the brake piece and the bottom surface of the groove, and the electromagnet is arranged on the bottom surface of the groove; when the electromagnet is powered on, the arc-shaped brake piece is sucked and completely arranged in the groove, and when the electromagnet is powered off, the arc-shaped brake piece is popped by the spring and is attached to the elevator shaft;
or the elevator shaft is a ferromagnetic pipeline, and more than one braking electromagnet or electromagnetic coil is arranged on the car shell of the elevator car.
6. The pneumatic elevator of claim 1, wherein: the cross-section of elevator well is circular, be provided with an at least direction rib or direction spout along the axis on the elevator well lateral wall, the last correspondence of elevator car direction rib or direction spout be provided with direction spout or direction rib, the guide way with direction rib sliding fit.
7. The pneumatic elevator of claim 6, wherein: the elevator shaft is provided with two guide sliding grooves, the elevator car is provided with two guide ribs, the guide grooves are in insulation connection with the side wall of the elevator shaft, and the guide ribs are in insulation connection with the car shell of the elevator car; the two guide sliding grooves are respectively and electrically connected with the positive electrode and the negative electrode of the power supply, and the control device and the lighting device in the elevator car are electrically connected with the two guide ribs.
8. The pneumatic elevator of claim 1, wherein: the lift car top is provided with the vent, elevator well top is provided with the room of taking a breath, the room of taking a breath communicates with external atmosphere, two gas ports of aerating device respectively with the bottom of lift well with the room of taking a breath intercommunication, two gas ports of bleeder device respectively with the bottom of lift well with the room of taking a breath intercommunication.
9. The pneumatic elevator of claim 1, wherein: the lower part of the buffer shaft is communicated with a fault inflation device through a pipeline, and the pipeline is provided with a one-way valve; the lower extreme of lift well still is provided with manual bleed valve.
10. A method of controlling a pneumatic elevator according to any one of claims 1-9, characterized by:
the control method comprises the following steps:
1) measuring the load in the current elevator car, and calculating the self weight of the current elevator car and the rising pressure or the falling pressure required by the load;
2) measuring the current air pressure of the closed space, and calculating the pressure difference between the current air pressure and the rising pressure or the falling pressure;
3) inflating or deflating according to the control command to control the elevator to move upwards or downwards;
4) judging whether the elevator reaches a target floor, stopping if the elevator reaches the target floor, and returning to the step 3 if the elevator does not reach the target floor;
or, the control method is as follows:
measuring the load in the current elevator car, and calculating the self weight of the current elevator car and the rising pressure or the falling pressure required by the load;
measuring the current air pressure of the closed space, and calculating the pressure difference between the current air pressure and the rising pressure or the falling pressure;
controlling the elevator to move upwards or downwards according to the control command;
calculating the amount of gas required to be filled or discharged for supplementing the pressure difference, filling or discharging the corresponding amount of gas, closing a braking device and controlling the elevator to move upwards or downwards;
measuring whether the current position of the elevator car reaches a preset floor;
when the air is inflated or deflated, the speed is reduced;
measuring whether the current position of the elevator car reaches a target floor, stopping inflating or deflating when the elevator car reaches the target position, starting a braking device, and controlling the elevator car to stop at the target position;
when ascending, the predetermined floor is the target floor-1, and when descending, the predetermined floor is the target floor-1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610364649.0A CN105819309B (en) | 2016-05-27 | 2016-05-27 | Pneumatic elevation ladder and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610364649.0A CN105819309B (en) | 2016-05-27 | 2016-05-27 | Pneumatic elevation ladder and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105819309A true CN105819309A (en) | 2016-08-03 |
| CN105819309B CN105819309B (en) | 2017-12-08 |
Family
ID=56531578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610364649.0A Active CN105819309B (en) | 2016-05-27 | 2016-05-27 | Pneumatic elevation ladder and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105819309B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744149A (en) * | 2017-03-08 | 2017-05-31 | 重庆迈高电梯有限公司 | A kind of anti-lift car car slipping safety guard |
| CN107089568A (en) * | 2017-06-03 | 2017-08-25 | 福州幻科机电科技有限公司 | A kind of comprehensive intelligent control system of express mail to family Special lifting elevator |
| CN107265244A (en) * | 2017-07-28 | 2017-10-20 | 福建船政交通职业学院 | A kind of construction site elevator anti-fall device and its anti-fall control method |
| WO2017201746A1 (en) * | 2016-05-27 | 2017-11-30 | 胡津铭 | Pneumatic lifting elevator and method for controlling same |
| CN107653861A (en) * | 2017-10-30 | 2018-02-02 | 西京学院 | A kind of multi-functional hollow man-made island tower for being used to support connection seabed vacuum pipe |
| CN108455411A (en) * | 2018-05-11 | 2018-08-28 | 张海芳 | A kind of urgent conveying device of hospital |
| CN108557716A (en) * | 2018-05-11 | 2018-09-21 | 张海芳 | A kind of medical emergency treatment prompt drop method |
| CN108557618A (en) * | 2018-05-11 | 2018-09-21 | 张海芳 | A kind of medical emergency treatment prompt drop device |
| CN108584620A (en) * | 2018-05-11 | 2018-09-28 | 张海芳 | The urgent carrying method of doctor in a kind of hospital |
| CN110054056A (en) * | 2018-01-18 | 2019-07-26 | 黄博深 | Elevator car safety |
| CN110468948A (en) * | 2019-09-06 | 2019-11-19 | 中铁二院工程集团有限责任公司 | Deep tunnel drainage system pumping plant |
| CN111762656A (en) * | 2020-05-19 | 2020-10-13 | 大连保税区华鸿工业技术有限公司 | Emergency braking system for elevator car |
| CN112061904A (en) * | 2020-09-03 | 2020-12-11 | 毛先金 | Rotary elevator, control system and control method for rotary elevator |
| CN112471816A (en) * | 2020-10-28 | 2021-03-12 | 闽江学院 | Multipurpose bed for old people and control method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021245455A1 (en) * | 2020-06-02 | 2021-12-09 | Killakathu Ramanathan Babu | A guide rail-pillar system of pneumatic vacuum elevator and a method to operate the same |
| CA3181115A1 (en) | 2020-06-02 | 2021-12-09 | Killakathu Ramanathan Babu | Overload valve assembly for a pneumatic vacuum elevator |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86210223U (en) * | 1986-11-13 | 1987-11-18 | 吴连才 | Pneumatic elevator |
| EP0550904A1 (en) * | 1992-01-08 | 1993-07-14 | Carlos Alberto Sors | Pneumatic vacuum lift elevator |
| JPH1149453A (en) * | 1997-07-30 | 1999-02-23 | Home Elevator Kk | Pneumatic elevator |
| CN1291585A (en) * | 1999-05-27 | 2001-04-18 | 安色莫约翰·马奇 | Pneumatic type hoist |
| JP2001294382A (en) * | 2000-04-12 | 2001-10-23 | Max Co Ltd | Pneumatic elevator |
| CN101955115A (en) * | 2010-10-28 | 2011-01-26 | 徐林波 | Air cylinder type wind elevator |
| CN102070060A (en) * | 2010-12-27 | 2011-05-25 | 何建中 | Elevator using compressed air as thrust |
| CN103879862A (en) * | 2014-03-12 | 2014-06-25 | 苏州天梭电梯有限公司 | Driving device and driving method of pneumatic elevator |
| CN104030110A (en) * | 2014-07-02 | 2014-09-10 | 苏州天梭电梯有限公司 | Pneumatic elevator, elevator car control system and elevator control process |
| CN205634563U (en) * | 2016-05-27 | 2016-10-12 | 胡津铭 | Pneumatic companion ladder |
-
2016
- 2016-05-27 CN CN201610364649.0A patent/CN105819309B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86210223U (en) * | 1986-11-13 | 1987-11-18 | 吴连才 | Pneumatic elevator |
| EP0550904A1 (en) * | 1992-01-08 | 1993-07-14 | Carlos Alberto Sors | Pneumatic vacuum lift elevator |
| JPH1149453A (en) * | 1997-07-30 | 1999-02-23 | Home Elevator Kk | Pneumatic elevator |
| CN1291585A (en) * | 1999-05-27 | 2001-04-18 | 安色莫约翰·马奇 | Pneumatic type hoist |
| JP2001294382A (en) * | 2000-04-12 | 2001-10-23 | Max Co Ltd | Pneumatic elevator |
| CN101955115A (en) * | 2010-10-28 | 2011-01-26 | 徐林波 | Air cylinder type wind elevator |
| CN102070060A (en) * | 2010-12-27 | 2011-05-25 | 何建中 | Elevator using compressed air as thrust |
| CN103879862A (en) * | 2014-03-12 | 2014-06-25 | 苏州天梭电梯有限公司 | Driving device and driving method of pneumatic elevator |
| CN104030110A (en) * | 2014-07-02 | 2014-09-10 | 苏州天梭电梯有限公司 | Pneumatic elevator, elevator car control system and elevator control process |
| CN205634563U (en) * | 2016-05-27 | 2016-10-12 | 胡津铭 | Pneumatic companion ladder |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017201746A1 (en) * | 2016-05-27 | 2017-11-30 | 胡津铭 | Pneumatic lifting elevator and method for controlling same |
| CN106744149A (en) * | 2017-03-08 | 2017-05-31 | 重庆迈高电梯有限公司 | A kind of anti-lift car car slipping safety guard |
| CN107089568A (en) * | 2017-06-03 | 2017-08-25 | 福州幻科机电科技有限公司 | A kind of comprehensive intelligent control system of express mail to family Special lifting elevator |
| CN107089568B (en) * | 2017-06-03 | 2023-10-20 | 南京米中科技有限公司 | Comprehensive intelligent control system of express mail home special elevator |
| CN107265244A (en) * | 2017-07-28 | 2017-10-20 | 福建船政交通职业学院 | A kind of construction site elevator anti-fall device and its anti-fall control method |
| CN107265244B (en) * | 2017-07-28 | 2022-09-23 | 福建船政交通职业学院 | Anti-falling device for elevator in construction site and anti-falling control method thereof |
| CN107653861A (en) * | 2017-10-30 | 2018-02-02 | 西京学院 | A kind of multi-functional hollow man-made island tower for being used to support connection seabed vacuum pipe |
| CN110054056A (en) * | 2018-01-18 | 2019-07-26 | 黄博深 | Elevator car safety |
| CN108584620A (en) * | 2018-05-11 | 2018-09-28 | 张海芳 | The urgent carrying method of doctor in a kind of hospital |
| CN108557618A (en) * | 2018-05-11 | 2018-09-21 | 张海芳 | A kind of medical emergency treatment prompt drop device |
| CN108557716A (en) * | 2018-05-11 | 2018-09-21 | 张海芳 | A kind of medical emergency treatment prompt drop method |
| CN108455411A (en) * | 2018-05-11 | 2018-08-28 | 张海芳 | A kind of urgent conveying device of hospital |
| CN110468948A (en) * | 2019-09-06 | 2019-11-19 | 中铁二院工程集团有限责任公司 | Deep tunnel drainage system pumping plant |
| CN110468948B (en) * | 2019-09-06 | 2024-02-27 | 中铁二院工程集团有限责任公司 | Pump station of deep tunnel drainage system |
| CN111762656A (en) * | 2020-05-19 | 2020-10-13 | 大连保税区华鸿工业技术有限公司 | Emergency braking system for elevator car |
| CN112061904A (en) * | 2020-09-03 | 2020-12-11 | 毛先金 | Rotary elevator, control system and control method for rotary elevator |
| CN112471816A (en) * | 2020-10-28 | 2021-03-12 | 闽江学院 | Multipurpose bed for old people and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105819309B (en) | 2017-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105819309B (en) | Pneumatic elevation ladder and control method | |
| CN205634563U (en) | Pneumatic companion ladder | |
| US4997060A (en) | Apparatus for controlling the descent of a passenger carrying body | |
| CN108689270B (en) | Emergency blocking device for lift car elevator | |
| JP2015003793A (en) | Elevator | |
| CN105752793A (en) | Anti-falling device of elevator | |
| WO2013179336A1 (en) | Elevator device | |
| CN205527144U (en) | Sedan -chair elevator prevents safety coefficient that falls | |
| CN105645214A (en) | Falling buffer device | |
| WO2017201746A1 (en) | Pneumatic lifting elevator and method for controlling same | |
| CN107892227A (en) | A kind of emergency staircase of anti-high-speed falling | |
| CN211172080U (en) | Utility tunnel flees for one's life mouthful and utility tunnel | |
| CN110759205B (en) | Dual-drive control elevator | |
| CN205634531U (en) | Elevator anti -falling device | |
| JP4862296B2 (en) | Elevator inspection method | |
| CN105712157A (en) | Elevator fall-down buffer equipment | |
| KR101800559B1 (en) | Elevator device | |
| US5549180A (en) | Emergency escape apparatus | |
| JP2010228922A (en) | Double deck elevator | |
| JP5250913B2 (en) | lift device | |
| EP1598299B1 (en) | Elevator equipment | |
| JP5255164B2 (en) | Evacuation control unit and elevator for elevator | |
| JP5204187B2 (en) | Evacuation control unit and elevator for elevator | |
| CN204490259U (en) | A kind of suspension type elevator | |
| CN105752791A (en) | Elevator brake equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |