CN109626187B

CN109626187B - Supplementary closing device of hoistway door

Info

Publication number: CN109626187B
Application number: CN201811548366.7A
Authority: CN
Inventors: 陈昌伟; 卢晓民; 肖永恒
Original assignee: Hitachi Elevator China Co Ltd
Current assignee: Hitachi Elevator China Co Ltd
Priority date: 2018-12-18
Filing date: 2018-12-18
Publication date: 2021-07-09
Anticipated expiration: 2038-12-18
Also published as: CN109626187A

Abstract

An auxiliary door closing device with an elastic component is arranged on an upper threshold of a hoistway door, the upper end of the auxiliary door closing device is connected with the upper threshold of the hoistway door, a downward bulge is arranged at the lower end of the auxiliary door closing device, and a device for driving the hoistway door to close is provided with a driving component matched with the auxiliary door closing device; during the door closing process of the elevator, one side of the auxiliary door closing device bulge is firstly squeezed, and the elastic part is compressed and stores energy; after the auxiliary door closing device protrudes, the elastic component releases energy, and the other side of the auxiliary door closing device protrudes pushes the hall door to continue to close the door, so that the auxiliary door closing effect is achieved. The device of the invention provides the auxiliary force at the door closing end of the hall door on the basis of not increasing the force of the forced door closing device of the hall door and a newly added control element, can effectively reduce the influence of the chimney effect of a high-rise building on the door-closing failure of the elevator door, reduces the trapping rate and improves the use efficiency of the elevator.

Description

Supplementary closing device of hoistway door

Technical Field

The invention relates to the technical field of elevators, in particular to an auxiliary 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 landing door is increased by the air pressure difference, and as the landing door loses the driving force of a motor at the side door of the car door at the tail end of the closed door, the kinetic energy of the closed door and the force of a forced door closing device are not enough to completely close the landing door of the elevator, so that the elevator breaks down, and people trapping, elevator stopping and 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 require the addition of a special detection unit or an additional auxiliary device, or the addition of control system control, which will increase the driving force and power of the car door side motor; that is, these methods need to be used at a high cost, and are not easy to improve and optimize on old elevators, and are inconvenient in practical applications.

Disclosure of Invention

Based on the above, the invention aims to overcome the defects of the prior art, and provides the hall door auxiliary door closing device on the premise of not increasing the force of the hall door forced door closing device, so that the auxiliary force is provided at the door closing end of the hall door to reduce the influence of the chimney effect of a high-rise building on the door-closing failure fault of the elevator door.

In order to achieve the purpose, the invention can be realized by the following technical scheme:

an auxiliary door closing device with an elastic component is arranged on an upper threshold of a hoistway door, the upper end of the auxiliary door closing device is connected with the upper threshold of the hoistway door, a downward bulge is arranged at the lower end of the auxiliary door closing device, and a device for driving the hoistway door to close is provided with a driving component matched with the auxiliary door closing device; during the door closing process of the elevator, one side of the auxiliary door closing device bulge is firstly squeezed, and the elastic part of the auxiliary door closing device is compressed and stores energy; when the driving part passes through the bulge of the auxiliary door closing device, the elastic part of the auxiliary door closing device releases energy, and the other side of the bulge of the auxiliary door closing device pushes the hall door to be closed continuously, so that the auxiliary door closing effect is achieved.

Further, the auxiliary door closing device comprises a V-shaped bracket with an upward opening and a compression spring (i.e., an "elastic component"), one end of the V-shaped bracket is connected with the hall sill, and a V-shaped concave cavity of the V-shaped bracket is connected with the hall sill through the compression spring; in the door closing process of the elevator, the V-shaped bracket is firstly squeezed, the compression spring is compressed and stores energy in the process, and after passing through the lowest point (namely the downward bulge at the lower end) of the V-shaped bracket, the compression spring releases energy to push the hoistway door to be continuously closed, so that the door closing assisting effect is achieved.

Further, a roller (i.e., "a driving component matched with the auxiliary door closing device") is arranged on a hall door forced door closing device (i.e., "a device for driving the hall door to close") of the elevator, and the movement track of the roller is matched with the V-shaped bracket; in the door closing process of the elevator, the roller is driven by a door machine and a forced door closing device, the V-shaped bracket is extruded in the horizontal direction, and the compression spring is compressed in the process to store energy; after the roller passes through the lowest point of the V-shaped bracket, the hall door is continuously closed, the compression spring and the V-shaped bracket release energy to push the hall door to be continuously closed, and therefore the auxiliary door closing effect is achieved at the tail end.

Furthermore, one end of the V-shaped support is hinged with the hoistway door sill, the other end of the V-shaped support is suspended in the air, and the V-shaped concave cavity of the V-shaped support is connected with the hoistway door sill through the compression spring which is vertically arranged.

Furthermore, the outer side of the V-shaped concave cavity at the bottom of the V-shaped support is arc-shaped and is in smooth fit with the roller.

Further, the V-shaped bracket has certain elasticity.

The invention has the beneficial effects that: the device of the invention provides the auxiliary force at the door closing end of the hall door on the basis of not increasing the force of the forced door closing device of the hall door and a newly added control element, thereby effectively reducing the influence of the chimney effect of a high-rise building on the failure of door closing of the elevator door, reducing the man trapping rate and improving the use efficiency of the elevator; the device can be modified and optimized on the old elevator, has lower modification cost and has good application value.

Drawings

FIG. 1 is a schematic diagram illustrating a normal door closing process according to an embodiment of the present invention;

FIG. 2 is a top view of a hall door during normal closing of the door according to an embodiment of the present invention;

fig. 3 is a schematic view of the hall doors in accordance with the embodiment of the present invention when they are completely closed;

fig. 4 is a plan view of a hoistway door according to an embodiment of the present invention when it is fully closed;

fig. 5 is a schematic view of a movement process of the auxiliary door closing device according to the embodiment of the present 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 hall door lock; 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 roller bracket; 302. a roller; 303. a spring; 400. a V-shaped bracket; 401. a compression spring; 500. a door knife; 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 and 2, in the supplementary door closing device for the hoistway door, a V-shaped bracket 400 with an upward opening is arranged on a hoistway door sill 100, one end of the V-shaped bracket 400 is hinged with the hoistway door sill 100, and the other end is suspended in the air; a compression spring 401 is further arranged between the V-shaped bracket 400 and the hall door sill 100, and the V-shaped concave cavity of the V-shaped bracket 400 is connected with the hall door sill 100 through the compression spring 401 which is vertically arranged; the roller 302 is arranged on the hall door forced closing device 300 of the elevator, and the motion trail of the roller 302 is matched with the V-shaped bracket 400. Specifically, the V-shaped bracket 400 has certain elasticity, and the outer side of the V-shaped cavity at the bottom of the V-shaped bracket is arc-shaped.

Specifically, the landing sill 100 has a guide rail 101, a left door plate 103 and a left door hanger plate 102 are hung on the guide rail, a right door plate 106 and a right door hanger plate 104 are hung on the guide rail, a door shoe 107 is arranged below the door plate, and the door shoe 107 slides in a groove 108 of the landing sill to form reciprocating motion to open and close the door. The right door hanger plate 104 is provided with a hall door lock 105, the hall door lock 105 is driven by the door knife 500 to be disengaged from the lock seat to be unlocked along with the door opening process, and the door closing process is not performed.

Specifically, the hoistway door sill 100 is provided with a linkage 200, the linkage 200 comprises a steel wire rope 201 and a pulley 202, and the linkage 200 is used for linking and connecting two door hanging plates, namely, one door hanging plate is stressed, and two doors move simultaneously.

Specifically, the hall door sill 100 is provided with a forced door closing device 300, which comprises a roller bracket 301, a roller 302 and a spring 303, wherein one end of the forced door closing device 300 is fixed on the hall door sill 100, the other end of the forced door closing device is connected with the left door hanging plate 102 through the spring 303 and the roller bracket 301, the roller 302 is arranged on the upper side of the roller bracket 301, and the forced door closing device 300 drives the linkage device 200 through the spring 303 and the roller bracket 301, so that the two hall doors have a force of closing the doors towards the center, and the hall doors are 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. The above problem can be solved by the auxiliary door closing device of the present embodiment, in which the two sides of the roller of the hall door lock 105 have a certain clearance from the door vane 500, which results in a certain hysteresis (e.g., distance L in fig. 2) between the car door 600 and the door panels (103, 106).

Specifically, in the embodiment, the hoistway door auxiliary door closing device is adopted, during the door closing process of the elevator, the roller 302 is driven by the door vane 500 and the forced door closing device before passing through the lowest point of the V-shaped bracket 400 during the door closing process, in the process, the compression spring 401 is compressed, and the compression spring 401 and the V-shaped bracket 400 with elasticity store energy; after the roller 302 passes through the lowest point of the V-shaped bracket 400, as shown in fig. 5, the hall door continues to be closed, and the compression spring 401 and the V-shaped bracket 400 release energy to push the hall door to continue to be closed, thereby playing a role of assisting in closing the door at the end, and finally the door is closed as shown in fig. 3 and 4.

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

1. The auxiliary door closing device for the elevator hall door is characterized in that the auxiliary door closing device is arranged on an upper threshold of the elevator hall door and comprises a V-shaped support with an upward opening and a compression spring, the V-shaped support has elasticity, one end of the V-shaped support is connected with the upper threshold of the hall door, the other end of the V-shaped support is suspended, and a V-shaped cavity of the V-shaped support is connected with the upper threshold of the hall door through the compression spring; the device for driving the hall door to be closed is provided with a driving part matched with the auxiliary door closing device; in the door closing process of the elevator, the suspension end of the V-shaped bracket is firstly extruded, and the compression spring is compressed and stores energy in the process; when the driving component passes through the lowest point of the V-shaped bracket, the compression spring releases energy, and one end of the V-shaped bracket connected with the hoistway door upper sill pushes the hoistway door to be closed continuously, so that the effect of assisting in closing the door is achieved.

2. The hoistway door auxiliary closing device of claim 1, wherein a roller is provided on the hoistway door forced closing device of the elevator, and the movement track of the roller is matched with the V-shaped bracket; in the door closing process of the elevator, the roller is driven by a door machine and a forced door closing device, the V-shaped bracket is extruded in the horizontal direction, and the compression spring is compressed in the process to store energy; after the roller passes through the lowest point of the V-shaped bracket, the hall door is continuously closed, the compression spring and the V-shaped bracket release energy to push the hall door to be continuously closed, and therefore the auxiliary door closing effect is achieved at the tail end.

3. The assistant door closing device for elevator hall doors according to claim 1, wherein one end of the V-shaped bracket is hinged with the hall door sill and the other end is suspended, and the V-shaped concave cavity of the V-shaped bracket is connected with the hall door sill through the compression spring which is vertically arranged.

4. The hoistway door closing apparatus of claim 1, wherein an outer side of the V-shaped recess of the bottom of the V-shaped bracket is rounded.