阅读说明：本技术 电梯门系统关门再检测装置 (Door closing re-detection device for elevator door system ) 是由 杨克雷 许志华 赵建兵 于 2019-09-24 设计创作，主要内容包括：本发明公开的电梯门系统关门再检测装置,包括门机、门板,其还包括安全检测板和到位开关,门机通过提拉绳与安装检测板连接；当开门时,门机通过提拉绳拉起安装检测板,使安全检测板与到位开关脱离接触,到位开关断开电梯安全回路,门机驱动门板正常开门,此时人员正常通过,光幕正常检测；人员进出轿厢完毕后正常关门时,门机释放提拉绳放下安装检测板,关门时如有异物,安全检测板无法到位撞击到位开关进行闭合,到位开关无法接通电梯安全回路,电梯无法正常运行,此时门机驱动门板重新开门以去除异物,当门机驱动门板再次关门无异物阻挡,安全检测板正常到位撞击到位开关,到位开关闭合后接通电梯安全回路,电梯方可正常运行。(The invention discloses a door closing retest device of an elevator door system, which comprises a door machine, a door plate, a safety detection plate and an in-place switch, wherein the door machine is connected with an installation detection plate through a lifting rope; when the door is opened, the door machine pulls up the installation detection plate through the lifting rope, so that the safety detection plate is separated from contact with the in-place switch, the in-place switch breaks off a safety loop of the elevator, the door machine drives the door plate to normally open the door, at the moment, a person normally passes through the door, and the light curtain is normally detected; personnel normally close the door after advancing out the car and finishing, a machine release lifting rope puts down the installation pick-up plate, if there is the foreign matter when closing the door, the unable striking that targets in place of safety pick-up plate is closed to the switch that targets in place, the unable switch-on elevator safety circuit that targets in place, the unable normal operating of elevator, door machine drive door plant opens the door again this moment and blocks in order to get rid of the foreign matter, it blocks to close the door no foreign matter once more as door machine drive door plant, the normal striking that targets in place of safety pick-up plate, switch-on elevator safety circuit after the switch.)

1. The device for detecting the closing of the elevator door system comprises a door machine and door plates driven by the door machine to open and close the door, and is characterized by also comprising a safety detection plate hinged on one door plate and an in-place switch fixedly arranged on the other door plate or a door frame, wherein the door machine is connected with the installation detection plate through a lifting rope; when the door machine drives the door plate to open the door, the door machine pulls the installation detection plate through the lifting rope, so that the safety detection plate is separated from contact with the in-place switch, the in-place switch breaks off a safety loop of the elevator, the door machine drives the door plate to normally open the door, and at the moment, a person normally passes through the door machine and the light curtain is normally detected; personnel pass in and out the car and finish the back, and door machine drive door plant normally closes the door when, door machine release lifting rope puts down the installation pick-up plate, if have the foreign matter when closing the door, the security pick-up plate can't target in place the striking and close the switch, and the unable normal operating of switch that targets in place, elevator, this moment door machine drive door plant opens the door again in order to get rid of the foreign matter, works as door machine drive door plant closes the door once more and has no foreign matter to block, the security pick-up plate normally targets in place the striking the switch that targets in place switches on the elevator safety circuit after the switch closure that targets in place, elevator.

2. The elevator door system door closing re-detection device of claim 1, wherein an upper end of the lifting rope is connected to a door knife arm in the door machine, and a lower end of the lifting rope is connected to the safety detection plate.

3. The door closing re-detection device of elevator door system as claimed in claim 2, wherein the upper and lower ends of the safety detection plate are respectively hinged to one end of the upper and lower rotation arms, the other end of the upper and lower rotation arms is hinged to the door plate, and the lower end of the lifting rope is connected to the middle position of the upper rotation arm.

Technical Field

The invention relates to the technical field of elevators, in particular to a door closing re-detection device of an elevator door system.

Background

With the great increase of high-rise buildings, the use frequency of elevators is also increasing, the safety of elevators becomes a problem which cannot be ignored, and 80% of accidents of elevators are door system accidents, wherein accidents caused by door system shearing are the most.

At present, the elevator door system detects people and objects entering and exiting the elevator car by means of light curtain detection, for example, fig. 1 shows a light curtain detection principle, when a person 10 or an object 20 blocks a light beam 31 of a light curtain 30, the light beam 31 of the light curtain 30 cannot be received after being emitted, the elevator sometimes passes through the elevator or is blocked by the object, and the door machine system 40 opens the door again to prevent the door panel from impacting the people and the objects. However, the light curtain also has a potential safety hazard, firstly, the light beam 31 of the light curtain 30 has a detection blind area 32, as shown in fig. 2, when an object is thin, such as a dog walking rope, an umbrella handle and the like, the light curtain 30 cannot be detected, at this time, the door operator can normally close the door, and a shearing accident can occur during the operation of the elevator. Secondly, the light curtain 30 is allowed to be undetected at the last 50mm distance of the door closing, and at the moment, if foreign matters are clamped in, the elevator can normally close the door to run, so that a shearing accident occurs. The light curtain also has a detection blind area 33 at least 50mm above the sill, and if a foreign object is in the area, a door closing shearing accident can also occur.

Disclosure of Invention

The invention aims to solve the technical problem that the existing elevator door system detects that people and objects enter and exit the elevator car only by means of a light curtain, and is additionally provided with a door closing re-detection device of the elevator door system.

The technical problem to be solved by the invention can be realized by the following technical scheme:

the device for detecting the closing of the elevator door system comprises a door machine and door plates driven by the door machine to open and close the door, and is characterized by also comprising a safety detection plate hinged on one door plate and an in-place switch fixedly arranged on the other door plate or a door frame, wherein the door machine is connected with the installation detection plate through a lifting rope; when the door machine drives the door plate to open the door, the door machine pulls the installation detection plate through the lifting rope, so that the safety detection plate is separated from contact with the in-place switch, the in-place switch breaks off a safety loop of the elevator, the door machine drives the door plate to normally open the door, and at the moment, a person normally passes through the door machine and the light curtain is normally detected; personnel pass in and out the car and finish the back, and door machine drive door plant normally closes the door when, door machine release lifting rope puts down the installation pick-up plate, if have the foreign matter when closing the door, the security pick-up plate can't target in place the striking and close the switch, and the unable normal operating of switch that targets in place, elevator, this moment door machine drive door plant opens the door again in order to get rid of the foreign matter, works as door machine drive door plant closes the door once more and has no foreign matter to block, the security pick-up plate normally targets in place the striking the switch that targets in place switches on the elevator safety circuit after the switch closure that targets in place, elevator.

In a preferred embodiment of the invention, the upper end of the lifting rope is connected with a door knife arm in the door machine, and the lower end of the lifting rope is connected with the safety detection plate.

In a preferred embodiment of the present invention, the upper end and the lower end of the security detection board are respectively hinged to one end of an upper rotating arm and one end of a lower rotating arm, the other end of the upper rotating arm and the other end of the lower rotating arm are hinged to the door panel, and the lower end of the lifting rope is connected to the middle position of the upper rotating arm.

Due to the adoption of the technical scheme, when the elevator is closed in place, if an object which is not detected by the light curtain is clamped in, the elevator can be effectively prevented from running, the occurrence of a shearing accident is prevented, and the safety of the conventional elevator is further improved.

Drawings

Fig. 1 is a schematic view of a current elevator door system detecting the entry and exit of people and objects into and out of a car.

Fig. 2 is a schematic view of a current elevator door system detecting that a detection blind area exists when people and objects enter or exit a car.

Fig. 3 is a schematic structural view of the door closing re-detection device of the elevator door system according to the present invention (when the elevator is opened).

Fig. 4 is a schematic structural view of the door closing re-detection device of the elevator door system according to the present invention (when the elevator is closed).

Detailed Description

The invention is further described below in conjunction with the appended drawings and detailed description.

The invention aims to improve the detailed object detection of a door area, reduce door system accidents and further improve the safety of an elevator.

The elevator door system accident accounts for the largest proportion in elevator accidents, the door system is mainly rated by the property of the door system, the door system needs to be opened and closed once when stopping every time, and the operation is frequent, so the safety detection of a door area is particularly important, the following accidents are easily caused by the hidden danger of the existing light curtain, when people go out for a walk a dog, people enter a car, the elevator cannot detect the accident caused by the closing operation of a rope when the dog stays outside, and further thinking that more and more ropes are prevented from being lost by children now, and if adults enter the elevator and children do not enter the elevator, the consequences caused at the moment are not imaginable, so the door closing re-detection device of the elevator door system can avoid the accident.

Referring to fig. 3 and 4, the device for detecting whether the elevator door system is closed again as shown in the drawings includes a door motor 100, door plates 210 and 220 driven by the door motor 100 to open and close the doors, a safety detection plate 300, and a position switch 400.

The upper end and the lower end of the safety detection plate 300 are respectively hinged with one end of the upper rotating arm 510 and one end of the lower rotating arm 520, the other ends of the upper rotating arm 510 and the lower rotating arm 520 are hinged on the door panel 210, the lifting rope is a lifting steel wire rope 600, the upper end of the lifting steel wire rope 600 is connected with the door knife arm 110 in the door machine 100, and the lower end of the lifting steel wire rope 600 is connected with the middle position of the upper rotating arm 510.

The in-position switch 400 is fixed to the door panel 220 at a position where it can be struck by the security detection plate 300. The reach switch 400 is incorporated into the elevator safety circuit to open and close the elevator safety circuit. If for a single door elevator, the reach switch 400 is fixed to the door frame in a position where it can be struck by the security detection panel 300.

The action principle of the elevator door system door closing re-detection device is as follows: as shown in fig. 3, when the door machine 100 opens the door, the door knife arm 110 is lifted, the door knife arm 110 drives the upper rotating arm 510 to rotate upward around the hinge point of the upper rotating arm 510 and the door panel 210 through the lifting steel wire rope 600, the upper rotating arm 510 pulls up the safety detection plate 300, so that the safety detection plate 300 is separated from the contact with the in-place switch 400, the in-place switch 400 is disconnected, the elevator safety loop is disconnected at this time, the door machine 100 drives the door panels 210 and 220 to be normally opened, at this time, the person normally passes through, and the light curtain is normally detected.

After people finish getting in and out of the car, the elevator is closed, as shown in fig. 4, after the door machine 100 drives the door plates 210 and 220 to close the door, the door knife arm 110 rotates and falls down, the lifting steel wire rope 600 is released, the upper rotating arm 510 and the lower rotating arm 520 rotate downwards simultaneously around the hinge points of the upper rotating arm 510 and the lower rotating arm 520 and the door plate 210 under the action of self gravity, and the safety detection plate 300 falls to the door closing position. When a foreign object exists in the process that the door motor 100 drives the door plates 210 and 220 to close, the safety detection plate 300 cannot be in place and collides with the in-place switch 400, the elevator safety loop cannot be connected, and the elevator cannot run. At this time, the door operator 100 re-drives the door panels 210 and 220 to re-open the doors, so as to remove foreign materials. After the foreign matter is removed, the door 100 drives the door panels 210 and 220 to close the door again. When the door motor 100 drives the door plates 210 and 220 to close again and no foreign object blocks the door, the safety detection plate 300 normally reaches the position and impacts the switch 400 to close the switch 400, so that the switch 400 is closed, the safety loop of the elevator is closed, the elevator can normally run, and the occurrence of shearing accidents is avoided.

The invention is characterized in that: the safety detection plate 300 is connected with the door knife arm 110 through a lifting steel wire rope 600, when the door is opened, the door knife arm 110 acts to lift the safety detection plate 300, and the elevator is normally opened; personnel normally pass in and out the car this moment, and personnel pass in and out and finish the back, and the elevator begins to close the door, closes the door and targets in place back door tool arm 110 action and falls safety inspection board 300, if this moment door district has any foreign matter to exist, safety inspection board 300 can't rotate the whereabouts and targets in place, and the door system can't move, can open the door once more and be convenient for the foreign matter to take out, avoids taking place the shearing accident of elevator operation.