CN111689351B - Elevator landing door device and method for detecting whether main device forcing door to be closed is normal or not - Google Patents
Elevator landing door device and method for detecting whether main device forcing door to be closed is normal or not Download PDFInfo
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- CN111689351B CN111689351B CN201910180867.2A CN201910180867A CN111689351B CN 111689351 B CN111689351 B CN 111689351B CN 201910180867 A CN201910180867 A CN 201910180867A CN 111689351 B CN111689351 B CN 111689351B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/14—Control systems or devices
- B66B13/143—Control systems or devices electrical
Abstract
The invention discloses an elevator landing door device, wherein a forced door opening and closing auxiliary device is additionally arranged outside a main device for forced door closing; the forced door opening and closing auxiliary device comprises a first rope return wheel, a second rope return wheel, a motor, an encoder, a sampling circuit and a controller; the first rope returning wheel and the second rope returning wheel are respectively arranged at two ends of the upper sill frame body; the linkage steel wire rope respectively bypasses the first return rope wheel and the second return rope wheel, two ends of the linkage steel wire rope are respectively connected with two sides of the driving side door hanging plate, and the middle part of the linkage steel wire rope is fixedly connected with the driven side door hanging plate; the motor is used for driving the first return rope wheel to rotate; the encoder is used for monitoring the opening degree of the landing door and sending the opening degree to the controller; the sampling circuit is used for monitoring the working voltage or current of the starting motor and sending the working voltage or current to the controller; the controller is used for controlling the motor to work. The invention also discloses a method for detecting whether the main device for forcibly closing the door is normal or not by the elevator landing door device. The invention can ensure that the landing door can be safely closed in place under special conditions such as wind pressure and the like, and can detect whether the main device for forcibly closing the door is normal or not when the elevator is maintained.
Description
Technical Field
The invention relates to an elevator technology, in particular to an elevator landing door device and a method for detecting whether a main device for forcedly closing a door is normal.
Background
When the elevator arrives at a landing, the elevator landing door device is driven by the car door device, and the car door and the landing door are linked and then opened for passengers to come in and go out. After the car leaves the flat position, the landing door should be able to close and lock automatically, prevent that the passenger from opening the landing door easily and falling the well.
The existing scheme for automatically closing and locking the landing door is to arrange a heavy hammer or a spring and other forced door closing devices on the landing door of the elevator, and when strong wind blows the landing door, the forced door closing devices cannot normally and automatically close the landing door under sudden resistance, so that the landing door is not locked, and the danger of falling down a hoistway is caused.
Another existing scheme for automatically closing and locking the landing door is to use a spring type forced door closing device for the elevator, and because the spring is in mechanical fatigue after long use, the rigidity has a reduced risk, and it is difficult to detect whether the forced door closing capability of the spring type forced door closing device is obviously reduced during maintenance, so that danger is easily caused in the subsequent process.
Disclosure of Invention
The invention aims to solve the technical problem that the elevator landing door can be safely closed in place under special conditions such as wind pressure and the like; when the elevator is maintained, whether the main device for forcing the door to be closed is normal can be detected.
In order to solve the technical problem, the invention provides an elevator landing door device, which comprises an upper sill frame body 7, a door guide rail 8, a landing door, a door full-opening prevention device 15 and a main forced door closing device 12; the landing door comprises a driving side door hanging plate 9 and a driven side door hanging plate 10; the door guide rail 8 is fixedly arranged on the upper ridge frame body 7; the driving side door hanging plate 9 and the driven side door hanging plate 10 are respectively provided with a hanging wheel; the driving side door hanging plate 9 and the driven side door hanging plate 10 respectively slide along the door guide rail 8 through the change gear in a straight line; the door full-opening prevention device 15 is arranged on the upper ridge frame body 7 at the far ends of the two sides of the door guide rail 8 and is used for preventing the opening of the landing door from being too large to enable the change gear to be separated from the door guide rail 8; the door forced closing main device 12 is used for automatically driving the landing doors to close and lock after the elevator car leaves the flat position; the elevator landing door device is characterized by further comprising a forced door opening and closing auxiliary device 1;
the door forced opening and closing auxiliary device 1 comprises a first rope return wheel 4, a second rope return wheel 11, a motor 3, an encoder, a sampling circuit and a controller 2;
the first rope returning wheel 4 and the second rope returning wheel 11 are respectively arranged at two ends of the upper sill frame body 7;
the linkage steel wire rope 16 respectively bypasses the first rope returning wheel 4 and the second rope returning wheel 11, two ends of the linkage steel wire rope 16 are respectively connected with the driving side and the driven side of the driving side door hanging plate 9, and the middle part of the linkage steel wire rope 16 is fixedly connected with the driven side door hanging plate through a steel wire rope clamp;
the motor 3 is installed and fixed on the upper sill frame body 7, and drives the first return rope wheel 4 to rotate through a driving wheel 20 of the motor;
the encoder is arranged on the motor and used for monitoring the opening degree of a landing door and sending the opening degree to the controller 2;
the sampling circuit is used for monitoring the working voltage or working current of the starting motor and sending the working voltage or working current to the controller 2;
and the controller 2 is used for controlling the motor to work so as to open or close the landing door.
Preferably, the door guide rail 8 and the upper sill frame body 7 are integrally formed.
Preferably, the motor 3 is installed and fixed on the side of the upper sill frame body 7 close to the first rope return wheel 4 through the installation seat.
Preferably, the motor 3 is installed and fixed inside the upper sill frame body 7.
Preferably, the door forced opening and closing auxiliary device 1 further comprises a transmission wheel 5;
the driving wheel 5 and the first return rope wheel 4 use the same transmission shaft, and power is transmitted through keys.
Preferably, the driving wheel 20 of the motor drives the driving wheel 5 to rotate through a belt drive or a chain drive.
Preferably, the door forced opening and closing auxiliary device 1 further comprises a transmission wheel 5;
the transmission wheel 5 is a gear and is coaxially and fixedly arranged on one side of the first return rope wheel 4;
the driving wheel 20 of the motor 3 is a gear;
the driving wheel 20 of the motor 3 is meshed with the driving wheel 5, and the power of the motor 3 is transmitted to the first return rope wheel 4.
Preferably, the door closing forcing device 12 is a weight type door closing forcing device;
the main device 12 for forced door closing comprises a guide wheel, a heavy hammer steel wire rope and a heavy hammer;
the guide wheel is fixed on a door hanging plate;
the heavy hammer steel wire rope bypasses the guide wheel, one end of the heavy hammer steel wire rope is connected and fixed to the steel wire rope fixing piece of the other door hanging plate, and the other end of the heavy hammer steel wire rope is connected and fixed to the heavy hammer;
the weight provides constant force for the landing door to close.
Preferably, the elevator landing door apparatus further comprises a remote processor;
the remote processor is in communication with the controller.
Preferably, the main door closing forcing device 12 is a spring-type door closing forcing device;
the door closing forcing main device 12 comprises a spring;
one end of the spring is fixed on the driving side door hanging plate 9, and the other end of the spring is installed and fixed on the upper sill frame body 7.
The method for detecting whether the main device for forcedly closing the door is normal or not for the elevator landing door device comprises the following steps of:
before the elevator is delivered to a customer, the elevator car leaves the current landing, and a motor 3 of a door forced opening and closing auxiliary device 1 is used for opening a landing door at a constant speed without external interference; the sampling circuit monitors the working voltage or current of the motor 3 and sends the working voltage or current to the controller 2, and the encoder monitors the opening degree of a landing door and sends the opening degree of the landing door to the controller 2; the controller 2 converts the reference door opening torque M according to the working voltage or current of the motor 3 in the opening process of the landing door 3 ；
When maintaining, the lift car leaves the current landing, and a motor 3 of the door forced opening and closing auxiliary device 1 is used for opening the landing door at a constant speed without external interference; the sampling circuit monitors the working voltage or current of the motor 3 and sends the working voltage or current to the controller, and the encoder monitors the opening degree of the landing door and sends the opening degree of the landing door to the controller 2; the controller 2 converts the current maintenance door opening torque M according to the working voltage or current of the motor 3 in the opening process of the landing door 4 ；
Thirdly, the controller obtains the current maintenance door opening torque M 4 Opening moment M of door with reference 3 Comparing, if the door opening moment M is maintained at present 4 Door opening moment M of ratio reference 3 Increased by an amount greater than the set torque M 0 The controller outputs a maintenance-required signal; if the current maintenance maintains the door opening torque M 4 Door opening moment M of ratio reference 3 And reducing the proportion to be larger than the moment reduction set proportion, and outputting a fault signal of a main device for forcedly closing the door.
Preferably, the set torque M 0 Set to 5n × m;
the torque reduction setting ratio is 20%.
Another method for detecting whether a forced door closing main device is normal for an elevator landing door device includes the steps of:
before the elevator is delivered to a customer, the lift car and the tested floor are leveled, and the power output by the lift car door motor is cut off;
(II) the remote processor sends a door opening instruction to the controller 2 of the door forced opening and closing auxiliary device 1, the controller 2 receives the door opening instruction and then controls the motor 3 to open the landing door at a constant speed, the landing door drives the car door to open, and the sampling circuit monitors the working voltage or current of the motor 3 and sends the working voltage or current to the landing doorThe controller, the encoder monitors the opening degree of the landing door and sends the opening degree to the controller 2; the controller 2 converts the reference flat door opening moment M according to the current working voltage or current of the motor 3 5 ；
When maintaining, the lift car and the tested floor are leveled, and the power output by the lift car door motor is cut off;
the remote processor sends a door opening instruction to the controller 2 of the door forced opening and closing auxiliary device 1, the controller 2 controls the motor 3 to open the landing door at a constant speed after receiving the door opening instruction, the landing door drives the car door to open together, the sampling circuit monitors the working voltage or current of the motor 3 and sends the working voltage or current to the controller, and the encoder monitors the opening of the landing door and sends the opening of the landing door to the controller 2; the controller 2 converts the current maintenance leveling layer door opening moment M according to the current working voltage or current of the motor 3 6 ；
(V) the controller obtains the current maintenance leveling door opening moment M 6 Horizontal layer door opening moment M with reference 5 Comparing, if the current maintenance maintains the flat layer door opening moment M 6 Door opening moment M of reference level 5 The increase proportion is larger than the torque increase set proportion, and the controller outputs a maintenance-required signal to the remote processor; if the current maintenance guarantees the flat layer door opening moment M 6 Door opening moment M of reference level 5 And when the reduction proportion is larger than the torque reduction set proportion, the controller outputs a fault signal of the main device for forcing the door to close to the door to the remote processor.
Preferably, the torque increase setting proportion is 10%;
the torque reduction setting ratio is 20%.
The method for detecting whether the main device for forcedly closing the door is normal or not for the landing door device of the elevator comprises the following steps of:
a. before the elevator is delivered to a customer, the elevator car is not in a flat layer area under the condition of no external interference, and a landing door is opened to a full-open position;
b. the spring type forced door closing device is used for driving the landing door to close the door, the balance force is provided by a motor of the forced door opening and closing auxiliary device to enable the landing door to close at a constant speed, and the sampling circuit monitors the working voltage or current of the motor 3 and sends the working voltage or current to the controller and the encoderMonitoring the opening degree of a landing door and sending the opening degree to the controller 2; the controller 2 converts the current reference door opening torque M according to the current working voltage or current of the motor 3 1 Calculating a reference tension F according to the radius R of the driving wheel 20 of the motor 3 1 ＝M 1 The extension stroke X of the spring is obtained according to the opening degree of the landing door monitored by the encoder, and then the reference spring stiffness K of a plurality of positions of the opening degree of the landing door is obtained 1 ，K 1 *X＝f+F 1 F is a constant of the kinetic friction force, and the rigidity K of the reference spring at a plurality of opening positions of the landing door 1 Taking the average number to obtain the average reference spring stiffness K 1 average ；
c. When maintenance detection is carried out, the lift car is not in a flat layer area under the condition of no external interference, and the landing door is opened to a full-open position;
d. the spring type forced door closing device is used for driving the landing door to close, a balance force is provided by a motor of the forced door opening and closing auxiliary device to enable the landing door to close at a constant speed, a sampling circuit monitors working voltage or current of the motor 3 and sends the working voltage or current to the controller, and an encoder monitors opening of the landing door and sends the opening of the landing door to the controller 2; the controller 2 converts the current maintenance door opening torque M according to the current working voltage or current of the motor 3 2 Calculating maintenance tension F according to radius R of driving wheel 20 of motor 3 2 ＝M 2 The extension stroke X of the spring is obtained according to the landing door opening degree monitored by the encoder, and then the maintenance spring stiffness K of a plurality of landing door opening position is obtained 2 ，K 2 *X＝f+F 2 F is a constant of the kinetic friction force, and maintains the spring stiffness K of the opening positions of the multiple landing doors 2 Taking the average number to obtain the average maintenance spring stiffness K 2 average ；
e. The controller sends K 2 average And K 1 average By comparison, if the average maintained spring rate K 2 average Specific average reference spring rate K 1 average And reducing the proportion to be larger than the rigidity reduction set proportion, and outputting a main device fault signal for forced door closing.
Preferably, f is 5 newtons.
The rigidity reduction is set at a rate of 50%.
The elevator landing door device is additionally provided with the forced door opening and closing auxiliary device driven by the motor, so that the landing door can be safely closed in place under special conditions such as wind pressure and the like; when the elevator is maintained, whether the main device for forcing the door to be closed is normal can be detected.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required for the present invention are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of an embodiment of an elevator landing door apparatus of the present invention;
fig. 2 is a schematic structural view of another embodiment of an elevator landing door apparatus of the present invention.
Description of the reference numerals
1 forced door opening and closing auxiliary device; 2, a controller; 3, a motor; 4 a first return rope wheel; 5, a driving wheel; 7, mounting the ridge frame body; 8 door guide rails; 9 driving the side door hanging plate; 10, hanging a driven side door; 11 a second return sheave; 12 a main device for forcibly closing the door; 15 door full open preventing device; 16 linkage wire rope; 17 a remote processor; 20 motor drive wheel.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1 and 2, the landing door device of the elevator comprises an upper sill frame body 7, a door guide rail 8, a landing door, a door full-opening preventing device 15 and a main device 12 for forcing the door to be closed; the landing door comprises a driving side door hanging plate 9 and a driven side door hanging plate 10; the door guide rail 8 is fixedly arranged on the upper ridge frame body 7; hanging wheels are respectively arranged on the driving side door hanging plate 9 and the driven side door hanging plate 10; the driving side door hanging plate 9 and the driven side door hanging plate 10 respectively slide along the door guide rail 8 through the change gear in a straight line; the door full-opening preventing device 15 is arranged on the upper sill body 7 at the far end of the two sides of the door guide rail 8 and is used for preventing the hanging wheel from separating from the door guide rail 8 due to overlarge opening degree of the landing door; the door forced closing main device 12 is used for automatically driving the landing doors to close and lock after the elevator car leaves the flat position; the elevator landing door device also comprises a forced door opening and closing auxiliary device 1;
the door forced opening and closing auxiliary device 1 comprises a first rope return wheel 4, a second rope return wheel 11, a motor 3, an encoder, a sampling circuit and a controller 2;
the first rope return wheel 4 and the second rope return wheel 11 are respectively arranged at two ends of the upper sill frame body 7;
the linkage steel wire rope 16 respectively bypasses the first return rope wheel 4 and the second return rope wheel 11, two ends of the linkage steel wire rope 16 are respectively connected with the driving side and the driven side of the driving side door hanging plate 9, and the middle part of the linkage steel wire rope 16 is fixedly connected with the driven side door hanging plate through a steel wire rope clamp;
the motor 3 is installed and fixed on the upper ridge frame body 7, and drives the first rope return wheel 4 to rotate through a driving wheel 20;
the encoder is arranged on the motor and used for monitoring the opening degree of a landing door and sending the opening degree to the controller 2;
the sampling circuit is used for monitoring the working voltage or working current of the starting motor and sending the working voltage or working current to the controller 2;
and the controller 2 is used for controlling the motor to work so as to open or close the landing door.
Preferably, the door guide rail 8 and the upper sill frame body 7 are integrally formed.
Preferably, the motor 3 is fixedly installed on the upper sill frame body 7 through the installation seat and is close to the first rope return wheel 4 side.
Preferably, the motor 3 is installed and fixed inside the upper sill frame body 7, the upper surface of the upper sill frame can shield water falling, and the waterproof capability is improved.
The elevator landing door device of the first embodiment is additionally provided with the motor-driven door forced opening and closing auxiliary device 1, so that the landing door can be safely closed in place under special conditions such as wind pressure and the like; when the elevator is maintained, whether the main device for forcing the door to be closed is normal or not can be detected, and an alarm signal is sent out.
Example two
Based on the elevator landing door device of the first embodiment, the auxiliary device 1 for forcedly opening and closing the door further comprises a transmission wheel 5;
the transmission wheel 5 and the first return rope wheel 4 use the same transmission shaft to transmit power through keys, as shown in fig. 1.
Preferably, the driving wheel 20 of the motor drives the driving wheel 5 to rotate through a belt drive or a chain drive.
EXAMPLE III
Based on the elevator landing door device of the first embodiment, the forced door opening and closing auxiliary device 1 further comprises a transmission wheel 5;
as shown in fig. 2, the transmission wheel 5 is a gear and is coaxially and fixedly arranged on one side of the first return rope wheel 4;
the driving wheel 20 of the motor 3 is a gear;
the driving wheel 20 of the motor 3 is meshed with the driving wheel 5, and the power of the motor 3 is transmitted to the first return rope wheel 4.
In the elevator landing door device of the third embodiment, the driving wheel 5 of the door opening and closing assisting device 1 is not coaxial with the first return rope wheel 4, the driving wheel 20 of the motor 3 of the door opening and closing assisting device 1 is a gear, the driving wheel 20 of the motor 3 transmits force to the first return rope wheel 4 through the gear meshing transmission mode, and the transmission efficiency of the gear transmission is high.
Example four
Based on the elevator landing door device of the first embodiment, the door closing forcing main device 12 is a weight type door closing forcing device;
the main device 12 for forced door closing comprises a guide wheel, a heavy hammer steel wire rope and a heavy hammer;
the guide wheel is fixed on a door hanging plate;
the heavy hammer steel wire rope bypasses the guide wheel, one end of the heavy hammer steel wire rope is connected and fixed to the steel wire rope fixing piece of the other door hanging plate, and the other end of the heavy hammer steel wire rope is connected and fixed to the heavy hammer;
the weight provides constant force for the landing door to close.
The method for detecting whether the main device for forcedly closing the door of the elevator landing door is normal comprises the following steps:
before the elevator is delivered to a customer, the elevator car leaves the current landing, and a motor 3 of a door forced opening and closing auxiliary device 1 is used for opening a landing door at a constant speed (the constant speed is opened to avoid interference caused by acceleration force) without external interference; the sampling circuit monitors the working voltage or current of the motor 3 and sends the working voltage or current to the controller 2, and the encoder monitors the opening degree of the landing door and sends the opening degree of the landing door to the controller 2; the controller 2 converts the reference door opening torque M according to the working voltage or current of the motor 3 in the opening process of the landing door 3 ；
When maintaining, the lift car leaves the current landing, and a motor 3 of the door forced opening and closing auxiliary device 1 is used for opening the landing door at a constant speed (the constant speed opening is used for avoiding the interference caused by acceleration force) without external interference; the sampling circuit monitors the working voltage or current of the motor 3 and sends the working voltage or current to the controller, and the encoder monitors the opening degree of the landing door and sends the opening degree of the landing door to the controller 2; the controller 2 converts the current maintenance door opening torque M according to the working voltage or current of the motor 3 in the opening process of the landing door 4 ；
Thirdly, the controller obtains the current maintenance door opening torque M 4 Opening moment M of door with reference 3 Comparing, if the current maintenance maintains the door opening torque M 4 Door opening moment M of ratio reference 3 Increased by a value greater than the set torque M 0 (e.g., M) 0 5N × m) to indicate that the friction force is increased, the whole mechanical system has new impedance, and the controller outputs a maintenance signal; if the current maintenance maintains the door opening torque M 4 Door opening moment M of ratio reference 3 The reduction and reduction ratio is greater than the moment reduction set ratio (for example, 20%), which means that the force of the main device for forcing the door to close, which is overcome by the auxiliary device 1 for forcing the door to open and close, is significantly reduced, it is necessary to check whether the main device for forcing the door to close has a fault (for example, the wire rope of the weight is disconnected, and no weight provides the door-closing holding force), and the controller outputs a fault signal of the main device for forcing the door to close.
According to a landing door opening signal of an encoder, recording the rotating angle of a driving wheel 20 of a motor 3 for completely opening the landing door once, when the landing door is opened to be contacted with a door full-opening preventing device 15, the landing door cannot be continuously opened, the motor 3 is locked to rotate so that the door opening torque continuously rises, and when the door opening torque reaches a limit torque (for example 150N), a controller can judge that the landing door is in a full-opening position; when the landing door is in the fully-open position, the controller can control the door-opening torque output by the motor until the door-opening torque is balanced with the door-closing torque of the heavy hammer.
In the elevator landing door device according to the fourth embodiment, before the elevator is delivered to the customer, the controller 2 of the door forced opening and closing auxiliary device 1 can be used for recording the normal condition of the door forced closing main device as the reference working condition, the door forced opening and closing auxiliary device 1 is used for detecting the actual working condition of the door forced closing device during subsequent maintenance, the actual working condition is compared with the reference working condition, and the fact that the door forced closing main device needs not to be maintained is judged.
EXAMPLE five
Based on the fourth embodiment, the elevator landing door apparatus further includes a remote processor 17;
the remote processor 17 communicates with the controller 2.
The method for remotely detecting whether the main device for forcibly closing the door is normal or not for the elevator landing door device comprises the following steps of:
before the elevator is delivered to a customer, the elevator car and the tested floor are leveled, and the power output by a car door motor is turned off to prevent accidents;
secondly, the remote processor sends a door opening instruction to the controller 2 of the door forced opening and closing auxiliary device 1, the controller 2 receives the door opening instruction and then controls the motor 3 to open the landing door at a constant speed, the landing door drives the car door to open, the sampling circuit monitors the working voltage or current of the motor 3 and sends the working voltage or current to the controller, and the encoder monitors the opening degree of the landing door and sends the working voltage or current to the controller 2; the controller 2 converts the reference flat door opening moment M according to the current working voltage or current of the motor 3 5 ；
Maintaining the lift car and the measured floor, and shutting off the power output by the lift car door machine to prevent accidents;
(IV) the remote processor sends a door opening instruction to the controller 2 of the forced door opening and closing auxiliary device 1, and the controller 2 controls the motor 3 to be opened at a constant speed after receiving the door opening instructionThe landing door drives the car door to be opened together, the sampling circuit monitors the working voltage or current of the motor 3 and sends the working voltage or current to the controller, and the encoder monitors the opening degree of the landing door and sends the opening degree of the landing door to the controller 2; the controller 2 converts the current maintenance flat layer door opening moment M according to the current working voltage or current of the motor 3 6 ；
(V) the controller obtains the current maintenance leveling door opening moment M 6 Horizontal layer door opening moment M with reference 5 Comparing, if the current maintenance maintains the flat layer door opening torque M 6 Horizontal layer door opening moment M of ratio reference 5 The increase proportion is larger than the torque increase set proportion (for example, the torque increase set proportion is 10%), which indicates that the friction force is increased, the whole mechanical system has new impedance and needs maintenance, and the controller outputs a signal which needs maintenance to a remote processor; if the current maintenance guarantees the flat layer door opening moment M 6 Horizontal layer door opening moment M of ratio reference 5 When the reduction rate is greater than the torque reduction setting rate (for example, the torque reduction setting rate is 20%), it indicates that the door closing force of the door closing forcing main device overcome by the door opening and closing forcing auxiliary device 1 is significantly reduced, and it needs to check whether the door closing forcing main device is in failure (for example, the steel wire rope of the weight is disconnected, and no weight provides the door closing holding force), and the controller outputs a door closing forcing main device failure signal to the remote processor.
The landing door is driven to open until a full-open travel switch on the landing door is triggered, so that the full-open position of the landing door can be determined, and the rotating angle of a driving wheel of a full-open motor of the landing door can be recorded through an encoder.
The elevator landing door device of the fifth embodiment can remotely detect the working condition of the main device for forcedly closing the door.
EXAMPLE six
Based on the elevator landing door device of the first embodiment, the main door closing forcing device 12 is a spring type door closing forcing device;
the door closing forcing main device 12 comprises a spring;
one end of the spring is fixed on the driving side door hanging plate 9, and the other end of the spring is fixed on the upper sill frame body 7.
The method for detecting whether the main device for forcedly closing the door of the elevator landing door is normal comprises the following steps:
a. before the elevator is delivered to a customer, the elevator car is not in a flat area under the condition of no external interference (no wind pressure and abnormal resistance (such as sill garbage)), and the landing door is firstly opened to a full-open position (manually opened or opened by forcing the controller 2 of the door opening and closing auxiliary device 1 to command the motor 3 to rotate in the door opening direction to open the landing door;
b. the spring type forced door closing device is used for driving the landing door to close, the balance force is provided by the motor 3 of the forced door opening and closing auxiliary device 1 to enable the landing door to close at a constant speed, the sampling circuit monitors the working voltage or current of the motor 3 and sends the working voltage or current to the controller, and the encoder monitors the opening of the landing door and sends the opening of the landing door to the controller 2; the controller 2 converts the current reference door opening torque M according to the current working voltage or current of the motor 3 1 Calculating a reference tension F according to the radius R of the driving wheel 20 of the motor 3 1 ＝M 1 The extension stroke X of the spring is obtained according to the landing door opening degree monitored by the encoder, and then the reference spring stiffness K of a plurality of landing door opening position is obtained 1 ，K 1 *X＝f+F 1 F is a constant of the kinetic friction (f is an empirical value, and is a constant, generally 5N), and the reference spring rate K is set for a plurality of opening positions of the landing door 1 Taking the average number to obtain the average reference spring stiffness K 1 average ；
c. When maintenance detection is carried out, under the condition of no external interference (no wind pressure and abnormal resistance (such as sill garbage)), the lift car is not in a flat area, and the landing door is firstly opened to a full-open position;
d. the spring type forced door closing device is used for driving the landing door to close, a balancing force is provided by a motor 3 of the forced door opening and closing auxiliary device 1 to enable the landing door to close at a constant speed, a sampling circuit monitors the working voltage or current of the motor 3 and sends the working voltage or current to the controller, and an encoder monitors the opening of the landing door and sends the opening of the landing door to the controller 2; the controller 2 converts the current maintenance door opening torque M according to the current working voltage or current of the motor 3 2 Calculating the maintenance tension F according to the radius R of the driving wheel 20 of the motor 3 2 ＝M 2 the/R is used for obtaining the extension stroke X of the spring according to the opening degree of the landing door monitored by the encoder and then obtaining the maintenance of a plurality of positions of the opening degree of the landing doorSpring rate K 2 ，K 2 *X＝f+F 2 F is a constant of the motion friction force, and the spring stiffness K of the opening positions of the multiple landing doors is maintained 2 Taking the average number to obtain the average maintenance spring stiffness K 2 average ；
e. The controller sends K 2 average And K 1 average Comparing to see if there is a significant decrease, if the average maintained spring rate K 2 average Specific average reference spring rate K 1 average The reduction and reduction ratio is greater than the rigidity reduction setting ratio (for example, the rigidity reduction setting ratio is 50%), and a forced door closing main device fault signal is output, which indicates that the spring needs to be replaced.
When the landing door is opened until the door hanging plate contacts the door full-opening prevention device 15, the door hanging plate cannot be opened continuously, the locked torque of the motor 3 rises continuously, the motor output 150N × m in the horizontal direction is taken as the limit, when the torque is reached, the landing door is considered to be in the full-opening position, and at the moment, the door opening force of the motor 3 is reduced until the door is balanced with the door forced-closing force of the main device for forcing the door to close.
The elevator landing door device of the sixth embodiment can use an encoder to measure at multiple positions to obtain multiple spring rates, and then the average value is taken to make the evaluation of the spring rates more accurate.
The invention is not to be considered as limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (16)
1. An elevator landing door device comprises an upper sill frame body (7), a door guide rail (8), a landing door, a door full-opening prevention device (15) and a main device (12) for forcedly closing the door; the landing door comprises a driving side door hanging plate (9) and a driven side door hanging plate (10); the door guide rail (8) is fixedly arranged on the upper sill frame body (7); hanging wheels are respectively arranged on the driving side door hanging plate (9) and the driven side door hanging plate (10); the driving side door hanging plate (9) and the driven side door hanging plate (10) respectively slide along the door guide rail (8) through the change gear in a straight line; the door full-opening prevention device (15) is arranged on the upper ridge frame body (7) at the far ends of the two sides of the door guide rail (8) and is used for preventing the opening of the landing door from being too large to enable the change gear to be separated from the door guide rail (8); the door closing forcing main device (12) is used for automatically driving the landing door to close and lock after the elevator car leaves the flat position; the elevator landing door device is characterized by also comprising a forced door opening and closing auxiliary device (1);
the forced door opening and closing auxiliary device (1) comprises a first rope return wheel (4), a second rope return wheel (11), a motor (3), an encoder, a sampling circuit and a controller (2);
the first rope returning wheel (4) and the second rope returning wheel (11) are respectively arranged at two ends of the upper sill frame body (7);
the linkage steel wire rope (16) respectively bypasses the first return rope wheel (4) and the second return rope wheel (11), two ends of the linkage steel wire rope (16) are respectively connected with the driving side and the driven side of the driving side door hanging plate (9), and the middle part of the linkage steel wire rope (16) is fixedly connected with the driven side door hanging plate through a steel wire rope clamp;
the motor (3) is installed and fixed on the upper sill frame body (7) and drives the first return rope wheel (4) to rotate through a driving wheel (20) of the motor;
the encoder is arranged on the motor and used for monitoring the opening degree of a landing door and sending the opening degree to the controller (2);
the sampling circuit is used for monitoring the working voltage or working current of the motor and sending the working voltage or working current to the controller (2);
the controller (2) is used for controlling the motor to work so as to open or close the landing door;
and the controller (2) converts the reference and the maintenance door opening torque according to the working voltage or current of the motor in the opening process of the landing door.
2. Elevator landing door arrangement according to claim 1,
the door guide rail (8) and the upper ridge frame body (7) are integrally formed.
3. Elevator landing door arrangement according to claim 1,
the motor (3) is fixedly arranged on the side, close to the first return rope wheel (4), of the upper sill frame body (7) through a mounting seat.
4. Elevator landing door arrangement according to claim 1,
the motor (3) is fixedly installed inside the upper ridge frame body (7).
5. Elevator landing door arrangement according to claim 1,
the forced door opening and closing auxiliary device (1) also comprises a transmission wheel (5);
the transmission wheel (5) and the first return rope wheel (4) use the same transmission shaft, and power is transmitted through keys.
6. Elevator landing door arrangement according to claim 5,
the driving wheel (20) of the motor drives the driving wheel (5) to rotate through belt transmission or chain transmission.
7. Elevator landing door arrangement according to claim 1,
the forced door opening and closing auxiliary device (1) also comprises a transmission wheel (5);
the transmission wheel (5) is a gear and is coaxially and fixedly arranged on one side of the first return rope wheel (4);
the driving wheel (20) of the motor (3) is a gear;
and a driving wheel (20) of the motor (3) is meshed with the driving wheel (5) to transmit the power of the motor (3) to the first return rope wheel (4).
8. Elevator landing door arrangement according to claim 1,
the main door closing forcing device (12) is a weight type door closing forcing device;
the forced door closing main device (12) comprises a guide wheel, a heavy hammer steel wire rope and a heavy hammer;
the guide wheel is fixed on a door hanging plate;
the heavy hammer steel wire rope bypasses the guide wheel, one end of the heavy hammer steel wire rope is connected and fixed to the steel wire rope fixing piece of the other door hanging plate, and the other end of the heavy hammer steel wire rope is connected and fixed to the heavy hammer;
the weight provides constant force for the landing door to close.
9. Elevator landing door arrangement according to claim 8,
the elevator landing door device further comprises a remote processor (17);
the remote processor is in communication with the controller.
10. Elevator landing door arrangement according to claim 1,
the main door closing forcing device (12) is a spring type door closing forcing device;
the door-closing forcing main device (12) comprises a spring;
one end of the spring is fixed on the driving side door hanging plate (9), and the other end of the spring is installed and fixed on the upper sill frame body (7).
11. The method for detecting whether a forced-door-closing main device is normal for an elevator landing door device according to claim 8, comprising the steps of:
before the elevator is delivered to a customer, the elevator car leaves the current landing, and a motor (3) of a forced door opening and closing auxiliary device (1) is used for opening a landing door at a constant speed without external interference; the sampling circuit monitors the working voltage or current of the motor (3) and sends the working voltage or current to the controller (2), and the encoder monitors the opening degree of a landing door and sends the opening degree of the landing door to the controller (2); the controller (2) converts the reference door opening torque M according to the working voltage or current of the motor (3) in the opening process of the landing door 3 ；
When maintaining, the lift car leaves the current landing, and a motor (3) of the forced door opening and closing auxiliary device (1) is used for opening the landing door at a constant speed without external interference; the sampling circuit monitors the working voltage or current of the motor (3) and sends the working voltage or current to the controller, and the encoder monitors the opening degree of the landing door and sends the opening degree of the landing door to the controller (2); the controller (2) converts the current maintenance door opening torque M according to the working voltage or current of the motor (3) in the opening process of the landing door 4 ；
Thirdly, the controller obtains the current maintenance door opening torque M 4 Opening moment M of door with reference 3 Comparing, if the door opening moment M is maintained at present 4 Door opening moment M of ratio reference 3 Increased by a value greater than the set torque M 0 The controller outputs a maintenance-required signal; if the current maintenance maintains the door opening torque M 4 Door opening moment M of ratio reference 3 And reducing the proportion to be larger than the moment reduction set proportion, and outputting a main device fault signal for forced door closing.
12. The method for detecting whether a door-closing forcing master device is normal according to claim 11,
the set moment M 0 Set to 5n x m;
the torque reduction setting ratio is 20%.
13. The method of detecting whether a forced-door-closing main apparatus is normal for an elevator landing door apparatus according to claim 9, comprising the steps of:
before the elevator is delivered to a customer, the elevator car and the tested floor are leveled, and the power output by the elevator car door motor is cut off;
secondly, the remote processor sends a door opening instruction to the controller (2) of the forced door opening and closing auxiliary device (1), the controller (2) receives the door opening instruction and then controls the motor (3) to open the landing door at a constant speed, the landing door drives the car door to open, the sampling circuit monitors the working voltage or current of the motor (3) and sends the working voltage or current to the controller, and the encoder monitors the opening degree of the landing door and sends the opening degree of the landing door to the controller (2); the controller (2) converts the reference horizontal layer door opening torque M according to the current working voltage or current of the motor (3) 5 ；
When maintaining, the lift car and the tested floor are leveled, and the power output by the lift car door motor is cut off;
the remote processor sends a door opening instruction to the controller (2) of the forced door opening and closing auxiliary device (1), the controller (2) controls the motor (3) to open the landing door at a constant speed after receiving the door opening instruction, the landing door drives the car door to open together, the sampling circuit monitors the working voltage or current of the motor (3) and sends the working voltage or current to the controller, and the encoder monitors the opening degree of the landing door and sends the working voltage or current to the controllerA maker (2); the controller (2) converts the current maintenance flat layer door opening torque M according to the current working voltage or current of the motor (3) 6 ；
(V) the controller obtains the current maintenance flat layer door opening moment M 6 Moment M for opening door with reference flat layer 5 Comparing, if the current maintenance maintains the flat layer door opening moment M 6 Door opening moment M of reference level 5 The increase proportion is larger than the torque increase set proportion, and the controller outputs a maintenance-required signal to the remote processor; if the current maintenance guarantees the flat layer door opening moment M 6 Door opening moment M of reference level 5 And the reduction proportion is larger than the torque reduction set proportion, and the controller outputs a main device fault signal for forcing the door to close to the remote processor.
14. The method for detecting whether a door closing forcing master device is normal according to claim 13,
the torque increase setting proportion is 10%;
the torque reduction setting ratio is 20%.
15. The method of detecting whether a forced-door-closing main apparatus is normal for an elevator landing door apparatus according to claim 10, comprising the steps of:
a. before the elevator is delivered to a customer, the elevator car is not in a flat layer area under the condition of no external interference, and a landing door is opened to a full-open position;
b. a spring type forced door closing device is used for driving a landing door to close, a balance force is provided by a motor of the forced door opening and closing auxiliary device (1) to enable the landing door to close at a constant speed, a sampling circuit monitors working voltage or current of the motor (3) and sends the working voltage or current to the controller, and an encoder monitors opening of the landing door and sends the opening of the landing door to the controller (2); the controller (2) converts the current reference door opening torque M according to the current working voltage or current of the motor (3) 1 Calculating a reference tension F from the radius R of the drive wheel (20) of the motor (3) 1 ＝M 1 The extension stroke X of the spring is obtained according to the opening degree of the landing door monitored by the encoder, and then the reference spring stiffness K of a plurality of positions of the opening degree of the landing door is obtained 1 ，K 1 *X＝f+F 1 F is a constant of the kinetic friction force, and the rigidity K of the reference spring at a plurality of opening positions of the landing door 1 Taking the average number to obtain the average reference spring stiffness K 1 average ；
c. When maintenance detection is carried out, the lift car is not in a flat layer area under the condition of no external interference, and the landing door is opened to a full-open position;
d. a spring type forced door closing device is used for driving a landing door to close, a balance force is provided by a motor of the forced door opening and closing auxiliary device (1) to enable the landing door to close at a constant speed, a sampling circuit monitors working voltage or current of the motor (3) and sends the working voltage or current to the controller, and an encoder monitors opening of the landing door and sends the opening of the landing door to the controller (2); the controller (2) converts the current maintenance door opening torque M according to the current working voltage or current of the motor (3) 2 The maintenance tension F is calculated according to the radius R of the driving wheel (20) of the motor (3) 2 ＝M 2 the/R is used for obtaining the extension stroke X of the spring according to the opening degree of the landing door monitored by the encoder and then obtaining the maintenance spring stiffness K of a plurality of positions of the opening degree of the landing door 2 ，K 2 *X＝f+F 2 F is a constant of the kinetic friction force, and maintains the spring stiffness K of the opening positions of the multiple landing doors 2 Taking the average number to obtain the average maintenance spring stiffness K 2 average ；
e. The controller will K 2 average And K 1 average By comparison, if the average maintained spring rate K 2 average of Specific average reference spring rate K 1 average And reducing the proportion to be larger than the rigidity reduction set proportion, and outputting a main device fault signal for forced door closing.
16. The method for detecting whether a door closing forcing master device is normal according to claim 15,
f is 5 cattle;
the stiffness reduction is set at a rate of 50%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910180867.2A CN111689351B (en) | 2019-03-11 | 2019-03-11 | Elevator landing door device and method for detecting whether main device forcing door to be closed is normal or not |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910180867.2A CN111689351B (en) | 2019-03-11 | 2019-03-11 | Elevator landing door device and method for detecting whether main device forcing door to be closed is normal or not |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5711112A (en) * | 1996-09-03 | 1998-01-27 | Otis Elevator Company | Double-drive automatic sliding door operator |
| CN102485629A (en) * | 2010-12-02 | 2012-06-06 | 上海三菱电梯有限公司 | Elevator lading door mechanism |
| CN201890699U (en) * | 2010-12-02 | 2011-07-06 | 上海三菱电梯有限公司 | Elevator landing door device |
| JP2012180209A (en) * | 2011-03-02 | 2012-09-20 | Toshiba Elevator Co Ltd | Elevator door device adapting measures against draft |
| CN202016790U (en) * | 2011-04-22 | 2011-10-26 | 上海贝思特门机有限公司 | Elevator landing door device |
| CN203212185U (en) * | 2012-12-25 | 2013-09-25 | 三菱电机上海机电电梯有限公司 | Spring device used for closing elevator landing door |
| JP6029549B2 (en) * | 2013-07-19 | 2016-11-24 | 三菱電機株式会社 | Elevator door diagnostic device and elevator door diagnostic method |
| CN204569104U (en) * | 2015-04-03 | 2015-08-19 | 上海三菱电梯有限公司 | Tool prevents the elevator landing door of door strap derailing mechanism |
| CN109399429B (en) * | 2018-12-18 | 2020-11-13 | 日立电梯（中国）有限公司 | Power-assisted door closing device for elevator hall door |
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