CN214611038U

CN214611038U - Supplementary protection device that prevents pressing from both sides of lift-cabin door

Info

Publication number: CN214611038U
Application number: CN202120396810.9U
Authority: CN
Inventors: 刘鑫; 朱士松; 黄梓庭
Original assignee: Special Equipment Safety Supervision Inspection Institute of Jiangsu Province
Current assignee: Special Equipment Safety Supervision Inspection Institute of Jiangsu Province
Priority date: 2021-02-23
Filing date: 2021-02-23
Publication date: 2021-11-05
Anticipated expiration: 2031-02-23

Abstract

The utility model relates to an elevator technical field especially relates to an auxiliary anti-pinch protection device of elevator door, include: thereby can trigger the switch part of opening and close through touching the foreign matter, switch part includes an pendulum rod at least, and the pendulum rod takes place to rotate through touching the foreign matter and triggers opening and close of switch part, and switch part installs on elevator sedan-chair door, lower both ends, and the pendulum rod stretches out from one side elevator sedan-chair door and extends to opposite side elevator sedan-chair door, the utility model discloses in come to protect the elevator operation through setting up the switch module that has the pendulum rod, the pendulum rod takes place to rotate through touching the foreign matter and triggers opening and close of switch part to avoided the elevator to close the door after the centre gripping foreign matter continues the operation, and then avoided or reduced the foreign matter by the centre gripping follow elevator car when between layer door and sedan-chair door under huge shear force effect to personnel's injury and damage elevator spare part.

Description

Supplementary protection device that prevents pressing from both sides of lift-cabin door

Technical Field

The utility model relates to an elevator technical field especially relates to an supplementary protection device that prevents pressing from both sides of lift-cabin door.

Background

The existing elevator door anti-pinch protection device usually adopts an electronic light curtain, a mechanical touch panel or a device combining the electronic light curtain and the mechanical touch panel which are arranged at the edge of an elevator car door, when a passenger is in the closing process of a landing door and is impacted by a door leaf or is impacted by the door leaf when entering the entrance, the protection device can automatically reopen the door so as to protect people or objects entering the car from being mistakenly pinched by the elevator door.

Although the existing anti-pinch device can play a good role in preventing pinching of people, the effect of the protection device is regulated on elevator manufacturing and installation safety regulations (GB 7588) and can be eliminated in the last 50mm stroke of each active door leaf, but the traditional anti-pinch device is poor in identification and protection capabilities of small and transparent objects, such as a rope for walking a dog, a long and thin stick, a thin plate, transparent glass and the like (foreign matter for short in the following), so that people (pets) are injured and elevator components are damaged due to collision when people are frequently found to clamp the objects to move along with a car after the elevator is closed in daily life.

In view of the above problems, the present designer is based on the practical experience and professional knowledge that are abundant for many years in engineering application of such products, and is actively making research and innovation in cooperation with the application of scholars, so as to create an auxiliary anti-pinch protection device for elevator doors, and make it more practical.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: provides an auxiliary anti-pinch protection device of an elevator door, thereby solving the problems in the prior art.

In order to achieve the above purpose, the utility model adopts the technical scheme that: an auxiliary anti-pinch protection device for an elevator door, comprising: the opening and closing of the switch component can be triggered by touching foreign matters, the switch component at least comprises a swing rod, the swing rod rotates by touching the foreign matters to trigger the opening and closing of the switch component, the switch component is arranged at the upper end and the lower end of the elevator car door, and the swing rod extends out of the elevator car door on one side and extends to the elevator car door on the other side.

Furthermore, the switch component is a limit switch, the limit switch further comprises a contact switch, the contact switch is rotatably connected with one end of the swing rod, and the contact switch is turned on and off by the rotation of the swing rod.

Further, the telescopic driving device is further included and used for enabling the switch component to move transversely.

Furthermore, the telescopic driving device comprises a push-pull electromagnet, a linear guide rail and a sliding block, a push-pull rod of the push-pull electromagnet is fixedly connected with the sliding block, the push-pull electromagnet is fixedly connected with the elevator car door, the sliding block is slidably fixed on the linear guide rail, the switch component is fixedly installed on the sliding block, and the push-pull rod drives the sliding block to slide in a reciprocating manner along the length direction of the linear guide rail.

Furthermore, the push-pull rod is fixedly connected with the sliding block through a bolt.

Furthermore, the switch component and the telescopic driving device are both embedded into the elevator car door on one side, and an accommodating space for the swing rod to enter and rotate is formed in the elevator car door on the other side.

Further, the transverse length of the accommodating space is greater than or equal to the telescopic stroke of the telescopic driving device.

Further, the distance between the swing rod at the upper end and the top of the elevator car door is smaller than or equal to 30cm, and the distance between the swing rod at the lower end and the bottom of the elevator car door is smaller than or equal to 20 cm.

Further, the normally closed contact of the limit switch is connected in series in the elevator operation control circuit.

Furthermore, the circuit of the push-pull electromagnet is connected into an elevator operation control circuit.

The utility model has the advantages that: the utility model discloses in have the switch module of pendulum rod through the upper and lower end setting at elevator sedan-chair door, the pendulum rod senses the existence of foreign matter through direct touching, and the rotation of pendulum rod comes opening and close of control switch module to control the operation of elevator, effectively avoid or reduce the foreign matter by the centre gripping follow elevator car when moving between layer door and sedan-chair door at huge shearing force under the injury of personnel and damage elevator spare part.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is an overall schematic view of an elevator door auxiliary anti-pinch protection device and an elevator car door in the embodiment of the utility model;

FIG. 2 is a schematic structural view of an auxiliary anti-pinch protection device of an elevator door in the closed state of the elevator car door in the embodiment of the present invention;

fig. 3 is a schematic structural view of the auxiliary anti-pinch protection device of the elevator door in the open state of the elevator car door in the embodiment of the invention;

fig. 4 is a side sectional view of a contact switch according to an embodiment of the present invention;

fig. 5 is a schematic view illustrating a connection between the contact switch and the push-pull rod according to an embodiment of the present invention.

Reference numerals: the elevator car door control device comprises a switch component 1, a swing rod 2, an elevator car door 3, a contact switch 4, a telescopic driving device 5, a bolt 6, a foreign matter 7, a push-pull electromagnet 51, a linear guide rail 52, a sliding block 53 and a push-pull rod 511.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

The auxiliary anti-pinch protection device for elevator doors shown in fig. 1-5 comprises: thereby can trigger the switch part 1 of opening and close through touching the foreign matter, switch part 1 includes a pendulum rod 2 at least, pendulum rod 2 takes place to rotate through touching the foreign matter and triggers opening and close of switch part 1, switch part 1 installs on elevator sedan-chair door 3, both ends down, pendulum rod 2 stretches out from one side elevator sedan-chair door 3 and extends to opposite side elevator sedan-chair door 3, through on elevator sedan-chair door 3, switch part 1 and pendulum rod 2 come to touch the response to the foreign matter 7 that the light curtain can not detect more than the installation of lower both ends, thereby control elevator car's operation, avoid foreign matter 7 to cause the damage to the elevator along with elevator car's operation.

More specifically, the switch component 1 is a limit switch, the limit switch further comprises a contact switch 4, the contact switch 4 is rotatably connected with one end of the swing rod 2, and the contact switch 4 is turned on and off by the rotation of the swing rod 2.

Preferably, the elevator car door opening and closing device further comprises a telescopic driving device 5, the telescopic driving device 5 is used for enabling the opening and closing component 1 to move transversely, and when the elevator car door 3 is in an opening state, the limit switch and the swing rod 2 can be driven by the telescopic driving device 5 to retract into the inner side of the installed elevator car door 3, so that people and articles can not be influenced to get on or off the elevator normally when the elevator car door 3 is in the opening state.

More specifically, the telescopic driving device 5 comprises a push-pull electromagnet 51, a linear guide rail 52 and a slide block 53, wherein a push-pull rod 511 of the push-pull electromagnet 51 is fixedly connected with the slide block 53, the push-pull electromagnet 51 is fixedly connected with the elevator car door 3, the slide block 53 is slidably fixed on the linear guide rail 52, the switch component 1 is fixedly arranged on the slide block 53, and the push-pull rod 511 drives the slide block 53 to slide in a reciprocating manner along the length direction of the linear guide rail 52.

In order to facilitate the fixed connection between the push-pull rod 511 and the slider 53, the push-pull rod 511 and the slider 53 are fixedly connected by a bolt 6.

As the preferred of above-mentioned embodiment, switch part 1 and flexible drive arrangement 5 all imbed the inside of one side elevator sedan-chair door 3, are provided with on the opposite side elevator sedan-chair door 3 and supply pendulum rod 2 to get into and take place pivoted accommodation space, thereby avoid the utility model discloses a thereby the device receives external collision influence operation.

More specifically, the inner wall of accommodation space is avoided to the flexible stroke of accommodation space lateral length more than or equal to flexible drive arrangement 5, touches pendulum rod 2 to form to interfere to pendulum rod 2, among the practical application, can have a wider space in the middle of very to the sedan-chair door of elevator, this space just can regard as the accommodation space, but some lift-cabin doors do not set up the space will be according to the utility model discloses a requirement sets up such an accommodation space.

More specifically, the distance between the swing rod 2 at the upper end and the top of the elevator car door 3 is less than or equal to 30cm,

the distance between the swing rod 2 at the lower end and the bottom of the elevator car door 3 is less than or equal to 20cm, and the false touch is prevented.

More specifically, the normally closed contact of the limit switch is connected in series in the elevator operation control circuit, and the limit switch is connected in series in the elevator operation control circuit, so that the elevator can normally operate in a closed state, and the normally closed contact is connected into the elevator operation control circuit.

More specifically, the electric circuit of the push-pull electromagnet 51 is connected to the elevator operation control circuit, so that the push-pull electromagnet 51 can be turned on or off by obtaining an electric signal when the elevator door is opened or closed.

The utility model discloses a theory of operation: the protection device of the utility model is arranged on the elevator car door 3 according to the installation mode, and the circuit of the limit switch and the push-pull electromagnet 51 is connected into the elevator operation control circuit, when the tiny transparent foreign matters 7 are clamped between the landing door and the elevator car door 3 because of the light curtain which is not triggered, because the elevator car door 3 and the landing door generate relative displacement, the foreign matters 7 are clamped by the elevator car door 3 and follow the car to operate, and finally touch the swing rods 2 arranged at the upper end and the lower end of the elevator car door 3, the swing rods 2 rotate, the limit switch controls the elevator operation control circuit to be disconnected, the elevator stops operating, thereby preventing the elevator door from clamping the foreign matters to continue operating, avoiding or reducing the damage to personnel and elevator parts under the action of huge shearing force when the foreign matters are clamped between the landing door and the elevator car door 3 and follow the elevator car to operate, and during the reset, the swing rod 2 needs to be manually restored to the original horizontal position, so that the situation that the lift car continues to run due to the automatic resetting of the limit switch is avoided. The utility model discloses in still guarantee through setting up flexible drive arrangement 5 that elevator sedan-chair door 3 open mode can not influence personnel and article and normally go up and down the elevator, as shown in FIG. 2, when elevator sedan-chair door 3 closed, plug-type electro-magnet 51 outage, push-and-pull rod 511 pushes limit switch under the spring action of spring and stretches out towards the elevator sedan-chair door 3 of opposite side, thereby span pendulum rod 2 between two elevator sedan-chair doors 3, as shown in FIG. 3, when elevator sedan-chair door 3 opened the door, for preventing that limit switch and pendulum rod 2 from revealing to cause the hindrance or produce the mistake and touch for the pedestrian in the outside, plug-and-pull rod 51 circular telegram, push-and-pull rod 511 moves the limit switch withdrawal under the absorption of electro-magnet.

It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an supplementary protection device that prevents pressing from both sides of lift-cabin door which characterized in that includes: thereby can trigger switch part (1) of opening and close through touching the foreign matter, switch part (1) includes a pendulum rod (2) at least, pendulum rod (2) take place to rotate through touching the foreign matter and trigger opening and close of switch part (1), switch part (1) is installed at elevator sedan-chair door (3) upper and lower both ends, pendulum rod (2) stretch out from one side elevator sedan-chair door (3) and extend to opposite side elevator sedan-chair door (3).

2. The auxiliary anti-pinch protection device for elevator doors according to claim 1, wherein the switch component (1) is a limit switch, the limit switch further comprises a contact switch (4), the contact switch (4) is rotatably connected with one end of the swing link (2), and the rotation of the swing link (2) realizes the opening and closing of the contact switch (4).

3. The auxiliary anti-pinch protection device for elevator doors according to claim 1, characterized in that it further comprises a telescopic drive (5), said telescopic drive (5) being used for lateral movement of the opening and closing member (1).

4. The auxiliary anti-pinch protection device for the elevator door according to claim 3, wherein the telescopic driving device (5) comprises a push-pull electromagnet (51), a linear guide rail (52) and a sliding block (53), a push-pull rod (511) of the push-pull electromagnet (51) is fixedly connected with the sliding block (53), the push-pull electromagnet (51) is fixedly connected with the elevator car door (3), the sliding block (53) is slidably fixed on the linear guide rail (52), the switch component (1) is fixedly arranged on the sliding block (53), and the push-pull rod (511) drives the sliding block (53) to slide back and forth along the length direction of the linear guide rail (52).

5. The auxiliary anti-pinch protection device for elevator doors according to claim 4, characterized in that the push-pull rod (511) and the slider (53) are fixedly connected by means of a bolt (6).

6. The auxiliary anti-pinch protection device for elevator doors according to claim 3, wherein the switch component (1) and the telescopic driving device (5) are embedded into the elevator car door (3) on one side, and an accommodating space for the swing rod (2) to enter and rotate is arranged on the elevator car door (3) on the other side.

7. The auxiliary anti-pinch protection device for elevator doors according to claim 6, characterized in that the lateral length of the accommodating space is greater than or equal to the extension stroke of the extension driving device (5).

8. The auxiliary anti-pinch protection device for elevator doors according to claim 1, wherein the distance between the swing link (2) at the upper end and the top of the elevator car door (3) is less than or equal to 30cm, and the distance between the swing link (2) at the lower end and the bottom of the elevator car door (3) is less than or equal to 20 cm.

9. The auxiliary anti-pinch protection device for elevator doors according to claim 2, wherein the normally closed contacts of the limit switch are connected in series in an elevator operation control circuit.

10. The auxiliary anti-pinch protection device for elevator doors according to claim 4, characterized in that the circuit of the push-pull electromagnet (51) is connected to the elevator operation control circuit.