CN109399429B - Power-assisted door closing device for elevator hall door - Google Patents
Power-assisted door closing device for elevator hall door Download PDFInfo
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- CN109399429B CN109399429B CN201811552013.4A CN201811552013A CN109399429B CN 109399429 B CN109399429 B CN 109399429B CN 201811552013 A CN201811552013 A CN 201811552013A CN 109399429 B CN109399429 B CN 109399429B
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- door
- electromagnetic coil
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- elevator
- shaft
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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
A power-assisted door closing device for an elevator hoistway door is characterized in that a power-assisted device is arranged on an upper sill of the elevator hoistway door, and when the elevator door is opened and closed, the power-assisted device is in an extension state and abuts against a car door knife, wherein at the tail end of the elevator door, the power-assisted device is matched with the car door knife in an abutting mode, and the hoistway door is completely closed by using the driving force of the car door; in the process of going up and down the elevator, the power assisting device is in a contraction state and has a gap with the car door vane, so that the elevator going up and down is not influenced; the power assisting device comprises a support, an electromagnetic coil, a spring and a shaft, the power assisting device is fixed on a doorsill hanging plate on the hoistway door, the electromagnetic coil is arranged at the front end of the support, the shaft is arranged at the front end of the axis position of the electromagnetic coil, and the spring is connected with one end of the shaft and arranged at the other side of the electromagnetic coil; when the electromagnetic coil is electrified, the shaft moves towards the electromagnetic coil side along the axis of the electromagnetic coil, and the power assisting device is in a contraction state; when the electromagnetic coil is de-energized, the shaft is reset under the action of the spring, and the power assisting device is in an extending state. The device can effectively solve the problem that the hoistway door cannot be closed.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to a power-assisted door closing device for an elevator hall door.
Background
The number of high-rise buildings is increasing, and the elevator as a vertical transportation tool brings great convenience to daily travel of people. However, the chimney effect of the high-rise building causes great difficulty in the use of the elevator, particularly the failure that the landing door of the elevator cannot be closed. The chimney effect means that in cold areas in winter, for example, outdoor environment temperature of a high-rise building is low, outdoor air density is higher than that of an indoor building, outdoor cold air permeates into the indoor building through an inlet, a hole and a gap at the lower part of the building, floats upwards from a vertical shaft such as an elevator, a stair and a pipe shaft and seeps out, convection is formed between air in the shaft and the outside, and great pressure difference is generated between the inside of the elevator shaft and a hall at the side of a hall door. The resistance of the hall door is increased due to the air pressure difference, the driving force of a car door side door motor is lost at the closing end of the hall door (when the elevator door is completely closed and in a walking state, a certain gap T is formed between the two sides of a roller of the hall door lock and a car door knife, and the gap is generated at the end in the door closing process, so that the driving force of the car door side door motor is lost at the closing end of the hall door), the door closing kinetic energy and the force of a forced door closing device are not enough to completely close the elevator hall door, and further, the elevator breaks down, and people trapping and elevator stopping crash phenomena are generated.
Chinese patent application publication CN105645237A "control method and system of elevator door motor" discloses a control method of elevator door motor, which detects the environmental wind power of elevator door motor and outputs the environmental wind power to the door motor control system, and the door motor control system automatically adjusts the moment or the door closing speed according to the environmental wind power. However, the method needs corresponding detection equipment for detecting the magnitude of the environmental wind power, and the cost is increased.
The chinese patent application publication CN102653374A, "a door device taking a harmful wind countermeasure of an elevator," is provided with a harmful wind detection unit, a door closing auxiliary device and a control unit, and when harmful wind is detected, the door closing auxiliary device is adopted to overcome extra resistance of strong wind to a hall door.
However, these methods are implemented by adding a special detecting unit or an additional driving device, which requires a large increase in cost, and also easily causes an increase in driving force and power of the door-side motor, and is not easy to improve and optimize in an old elevator, which is inconvenient in practical application.
Disclosure of Invention
Based on the above, the invention aims to overcome the defects of the prior art, and provides the elevator hall door power-assisted door closing device on the premise of not increasing the force of the forced door closing device of the hall door, so that the auxiliary force is provided at the door closing end of the hall door, and the influence of the chimney effect of a high-rise building on the door closing failure of the elevator door is reduced.
In order to achieve the purpose, the invention can be realized by the following technical scheme:
a power-assisted door closing device for an elevator hall door is characterized in that a power-assisted device is arranged on an upper threshold of the elevator hall door, and the power-assisted device has an extension state and a contraction state; when the elevator is opened and closed, the power assisting device is in an extending state and is abutted and matched with the car door knife, wherein at the tail end of the elevator door closing, the power assisting device is abutted and matched with the car door knife, and the hall door is completely closed by using the driving force of the car door, so that the problem that the hall door cannot be completely closed due to the fact that the driving force of a car door side door motor is lost at the tail end of the elevator door closing is solved; in the process of going up and down the elevator, the power assisting device is in a contraction state and has a certain gap with the car door knife, so that the elevator going up and down cannot be influenced; the power assisting device comprises a support, an electromagnetic coil, a spring and a shaft, the power assisting device is fixed on a door hanging plate of the hoistway door upper threshold, the electromagnetic coil is arranged at the front end of the support, the shaft is arranged at the front end of the axis position of the electromagnetic coil, and the spring is connected with one end of the shaft and is arranged at the other side of the electromagnetic coil; when the electromagnetic coil is electrified, the shaft moves towards the electromagnetic coil side along the axis of the electromagnetic coil, the power assisting device is in a contraction state, and a certain gap is formed between the shaft of the power assisting device and the car door knife, so that the walking of the car door knife is not influenced; when the electromagnetic coil is powered off, the shaft is reset under the action of the spring, the power assisting device is in an extending state, and the front end of the shaft is abutted and matched with the car door vane.
Further, after the hall door lock roller is separated from the car door knife at the end of closing the door (namely, when the hall door loses the driving force of the car door side door motor at the distance that the gap T exists at the end of closing the door), the car door knife is abutted and matched with the power assisting device, and the car door knife pushes the power assisting device, so that the elevator hall door is completely closed.
Further, the support is a 7-shaped support.
Furthermore, the electromagnetic coil is horizontally arranged and arranged on the right side of the 7-shaped support, the spring is arranged on the right side of the shaft, and after the shaft is reset, the front end of the shaft is abutted and matched with the right arm of the car door vane.
The invention has the beneficial effects that: in the door closing process, when the power assisting device is in an extension state, the power assisting device is abutted and matched with the car door knife, the hall door is completely closed by using the driving force of the car door, and on the basis of not increasing the force of a forced door closing device of the hall door, the problem that the hall door cannot be completely closed due to the fact that the driving force of a motor of a side door of the car door is lost at the tail end of the closed door is solved; when the elevator goes up and down, the power assisting device is in a contraction state and has a certain gap with the car door vane, so that the elevator can not be influenced. The device of the invention utilizes the driving force of the car door to completely close the hall door at the closing end without increasing the force of a forced door closing device of the hall door, simultaneously does not influence the opening and the walking of the elevator, can effectively reduce the influence of the chimney effect of a high-rise building on the failure of the elevator door to close the door, reduces the trapping rate and improves the use efficiency of the elevator.
Drawings
Fig. 1 is a schematic view of hall doors according to an embodiment of the present invention when they are completely closed;
FIG. 2 is a top view of a hall door according to an embodiment of the present invention fully closed;
fig. 3 is a schematic view illustrating a hall door opening process according to an embodiment of the present invention;
FIG. 4 is a top view of a hall door according to an embodiment of the present invention;
fig. 5 is a schematic view of a hall door assisting device in a walking process according to an embodiment of the invention;
in the figure: 100. a landing door is put on the sill; 101. a guide rail; 102. a left door hanger plate; 103. a left door panel; 104. a right door hanger plate; 105. a door lock; 1051. a door lock left roller; 1052. a door lock right roller; 106. a right door panel; 107. a door boot; 108. a sill; 200. a linkage device; 201. a wire rope; 202. a pulley; 300. a forced door closing device 301 and a bracket; 302. a self-closing spring; 400. a booster device; 401. a 7-shaped bracket; 402. an electromagnetic coil; 403. a shaft; 404. a spring; 500. a car door vane; 501. a left arm of the door vane; 502. a right arm of the door vane; 600. a car door.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
Example (b):
as shown in fig. 1-5, in the power-assisted door closing device for the hoistway door, a power-assisted device 400 is arranged on a hoistway door sill 100, the power-assisted device 400 is arranged on one side (in a flat layer state) of a car door vane 500 close to a centerline of an elevator, and has an extension state (a state that an electromagnetic coil 402 is not electrified) and a contraction state (a state that the electromagnetic coil is electrified); when the elevator is opened and closed, the power assisting device 400 is in an extension state (the electromagnetic coil 402 is in a power-off state) and is abutted and matched with the car door knife 500, wherein at the end of closing the elevator, the power assisting device 400 is abutted and matched with the car door knife (the gap A is 0) by utilizing the driving force of the car door 600 to completely close the hall door, so that the problem that the hall door cannot be completely closed due to the fact that the hall door loses the driving force of a car door side door motor at the end of closing the elevator door is solved; in the process of moving the elevator up and down, the power assisting device 400 is in a contraction state and has a certain gap (gap A is larger than 0) with the car door vane 500, so that the moving of the elevator is not influenced.
Specifically, in this embodiment, the landing sill 100 has a guide rail 101, the left door plate 103 and the left door hanger plate 102 are hung on the guide rail, the right door plate 106 and the right door hanger plate 104 are hung on the guide rail, the door shoe 107 is arranged below the door plate, and the door shoe 107 slides in the groove of the landing sill 108, thereby forming a reciprocating motion to open and close the door. The right door hanging plate 104 is provided with a door lock 105, the door lock 105 is provided with a door lock left roller 1051 and a door lock right roller 1052, the door lock 105 is driven by a door knife left arm 501 of a door knife 500 to be disengaged with a lock seat to unlock along with the door opening process, and the door closing process is not the reverse. When the left door panel 103 and the right door panel 106 are completely closed and in the elevator-walking state, a gap T (shown in fig. 2) is formed between the two sides of the roller of the door lock 105 and the door vane 500; when the power-assisted door closing device 400 is not used, the hall door loses the driving force of the motor of the side door of the car door by the distance of the gap T at the closing tail end, and the phenomenon that the hall door of the elevator cannot be completely closed, even the phenomena of elevator failure, people trapping, elevator stopping and crash easily occur when large atmospheric pressure difference exists.
Specifically, the hall door sill 100 is provided with a forced door closing device 300, which comprises a bracket 301 and a self-closing spring 302, wherein one end of the device is fixed on the hall door sill 100, the other end of the device is connected with the left door hanging plate 102 through the bracket 301, and the device enables the hall door to have a force for closing the hall door centrally, so that the hall door is in a normally closed state. However, the force cannot be too large, which causes difficulty in opening the door, and simultaneously, the door side of the car needs larger torque output and motor power.
Specifically, the hoistway door sill 100 is provided with a linkage 200, the linkage 200 includes a steel wire rope 201 and a pulley 202, and the linkage connects two door hanging plates in a linkage manner, that is, one door hanging plate is stressed, and two doors move simultaneously.
Specifically, in this embodiment, the power assisting device 400 is fixed to the right door hanger plate 104 of the hall door sill 100, and includes a "7" shaped bracket 401, an electromagnetic coil 402, a spring 404, and a shaft 403. The electromagnetic coil 402 is horizontally arranged and arranged at the front end of the 7-shaped bracket 401, the shaft 403 is arranged at the front end of the axial position of the electromagnetic coil 402 and can slide left and right along the central line of the electromagnetic coil 402, the spring 404 is connected with one end of the shaft 403, and the spring 404 is arranged at the right position of the electromagnetic coil 402. When the electromagnetic coil 402 is powered, the shaft 403 is attracted to the electromagnetic coil 402, i.e., moves to the left along the axis of the electromagnetic coil 402, and the power assisting device 400 is in a compressed state; when the electromagnetic coil 402 is powered off, the power assisting device 400 is in an extending state, the shaft 403 is reset under the action of the spring 404, the front end of the shaft 403 is abutted and matched with the car door vane 500 after being reset, and the front end of the shaft 403 has no gap with the door vane right arm 502.
As shown in fig. 5, in the process of moving the elevator up and down, the electromagnetic coil 402 is powered on, the power assisting device 400 is in a compressed state, and the shaft 403 and the electromagnetic coil 402 attract each other, so that a certain gap a (a is greater than 0) exists between the right arm 502 of the door vane and the shaft 403, and the moving of the elevator is not affected.
As shown in fig. 1 and 3, when the elevator is in a flat floor, after the door machine receives a door opening command, the car door 600 moves first, the vane left arm 501 gradually contacts with the door lock left roller 1051, the door lock 105 rotates around the shaft to lift the hook to unlock, the left door panel 103 and the right door panel 106 open the door to two sides, the electromagnetic coil 402 loses power, the shaft 403 moves towards the vane right arm 502 under the action of the spring 404 to reset, the power assisting device is in an extending state and is in butt fit with the car door vane 500, the gap a between the shaft 403 and the vane right arm 502 becomes 0, and the car door vane 500 clamps the hall door lock roller to the end of opening the door.
The door closing process: the left door plate 103 and the right door plate 106 are driven by the door knife 105 of the car door 600 in the middle section before the door is closed, after the hall door lock right roller 1052 is separated from the door knife right arm 502 at the end of the door closing, because the electromagnetic coil 402 is de-energized, the power assisting device 400 is in an extending state, the power assisting device 400 is matched with the balance of the car door knife 502 (the gap a is 0), the hall door is completely closed by the driving force of the car door 600, and the problem that the hall door cannot be completely closed due to the fact that the motor driving force of the car door is lost at the end of the door closing is solved.
After the elevator door receives the elevator-walking instruction, the electromagnetic coil 402 of the power assisting device 400 is electrified, and the shaft 403 and the door knife right arm 502 generate a gap (A is larger than 0), so that the door opening and the elevator walking are not influenced.
The foregoing examples, and other figures, merely represent one embodiment of the invention and are intended to illustrate and not to limit the invention. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (4)
1. A power-assisted door closing device for an elevator hall door is characterized in that a power-assisted device is arranged on an upper threshold of the elevator hall door, and the power-assisted device has an extension state and a contraction state; when the elevator is opened and closed, the power assisting device is in an extending state and is abutted and matched with the car door knife, wherein at the tail end of the elevator door closing, the power assisting device is abutted and matched with the car door knife, and the hall door is completely closed by using the car door driving force; in the process of going up and down the elevator, the power assisting device is in a contraction state and has a certain gap with the car door knife, so that the elevator going up and down cannot be influenced; the power assisting device comprises a support, an electromagnetic coil, a spring and a shaft, the power assisting device is fixed on a door hanging plate of the hoistway door upper threshold, the electromagnetic coil is arranged at the front end of the support, the shaft is arranged at the front end of the axis position of the electromagnetic coil, and the spring is connected with one end of the shaft and is arranged at the other side of the electromagnetic coil; when the electromagnetic coil is electrified, the shaft moves towards the electromagnetic coil side along the axis of the electromagnetic coil, the power assisting device is in a contraction state, and a certain gap is formed between the shaft of the power assisting device and the car door knife, so that the walking of the car door knife is not influenced; when the electromagnetic coil is powered off, the shaft is reset under the action of the spring, the power assisting device is in an extending state, and the front end of the shaft is abutted and matched with the car door vane.
2. The hoistway door power-assisted closing device of claim 1, wherein after the hoistway door lock roller is separated from the car door knife at the end of closing the door, the car door knife is abutted against and matched with the power-assisted device, and the car door knife pushes the power-assisted device, so that the hoistway door is completely closed.
3. The hoistway door closing apparatus of claim 1, wherein the bracket is a 7-shaped bracket.
4. The assisted door closing device for the elevator hall door according to claim 3, wherein the electromagnetic coil is horizontally arranged and arranged on the right side of the 7-shaped support, the spring is arranged on the right side of the shaft, and after the spring is reset, the front end of the shaft is abutted and matched with the right arm of the car door vane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811552013.4A CN109399429B (en) | 2018-12-18 | 2018-12-18 | Power-assisted door closing device for elevator hall door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811552013.4A CN109399429B (en) | 2018-12-18 | 2018-12-18 | Power-assisted door closing device for elevator hall door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109399429A CN109399429A (en) | 2019-03-01 |
| CN109399429B true CN109399429B (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811552013.4A Active CN109399429B (en) | 2018-12-18 | 2018-12-18 | Power-assisted door closing device for elevator hall door |
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| CN (1) | CN109399429B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111689351B (en) * | 2019-03-11 | 2022-10-14 | 上海三菱电梯有限公司 | Elevator landing door device and method for detecting whether main device forcing door to be closed is normal or not |
| CN110963391B (en) * | 2019-12-23 | 2023-12-05 | 华南理工大学 | Novel chimney effect-resistant intelligent sensing door system for high-rise building and control method |
| CN113086815B (en) * | 2021-03-31 | 2022-10-04 | 日立电梯（中国）有限公司 | Push-down elevator layer is from closing device for door |
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| CN109399429A (en) | 2019-03-01 |
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