阅读说明：本技术 一种复绕曳引电梯 (Rewinding traction elevator ) 是由 朱建新 戴跃根 张陈 苏天宝 于 2019-12-19 设计创作，主要内容包括：本发明涉及一种复绕曳引电梯,包括复绕曳引电梯,包括复绕曳引机构,所述复绕曳引机构包括曳引绳；以及配重,其与所述曳引绳的一端连接；以及轿厢,其与所述曳引绳的另一端连接,所述轿厢包括箱体以及相对设置的轿门,所述轿门相对的一面设置有按压机构,所述按压机构包括依次连接的支撑层、感压层和软质按压层,所述感压层包括若干竖向并列的弹性支撑件,所述弹性支撑件与所述支撑层之间设置有与所述弹性支撑件对应的压力传感器,所述支撑层与所述轿门连接。本申请在体积较小的物体对轿门进行阻挡时,检测到障碍物,避免了障碍物位于红外光幕死角时而无法被检测到的情况,能有效地提高安全性能。(The invention relates to a rewinding traction elevator, which comprises a rewinding traction elevator and a rewinding traction mechanism, wherein the rewinding traction mechanism comprises a traction rope; and a counterweight connected to one end of the hoist rope; and the car, its with the other end of towline is connected, the car includes the sedan-chair door of box and relative setting, the one side that the sedan-chair door is relative is provided with pressing means, pressing means is including the supporting layer, the layer of feeling pressure and the soft layer of pressing that connect gradually, the layer of feeling pressure includes a plurality of vertical elastic support piece who stands side by side, elastic support piece with be provided with between the supporting layer with the pressure sensor that elastic support piece corresponds, the supporting layer with the sedan-chair door is connected. This application is when the less object of volume blocks the sedan-chair door, detects the barrier, has avoided the barrier to be located the unable condition detected often of infrared light curtain dead angle, can improve the security performance effectively.)

1. A rewinding traction elevator is characterized in that: the compound winding traction mechanism comprises a traction rope; and

a counterweight connected to one end of the hoist rope; and

the lift car is connected with the other end of the hoisting rope and comprises a box body and a lift car door which is arranged oppositely, a pressing mechanism is arranged on one surface opposite to the lift car door,

the pressing mechanism comprises a supporting layer, a pressure sensing layer and a soft pressing layer which are sequentially connected, the pressure sensing layer comprises a plurality of elastic supporting pieces which are vertically arranged in parallel, a pressure sensor corresponding to the elastic supporting pieces is arranged between the elastic supporting pieces and the supporting layer, and the supporting layer is connected with the car door.

2. The rewinding traction elevator according to claim 1, characterized in that: the pressure sensors comprise a plurality of pressure sensors and correspond to the elastic supporting pieces one by one.

3. The rewinding traction elevator according to claim 1, characterized in that: the pressure sensor is a flexible pressure sensor.

4. The rewinding traction elevator according to claim 3, characterized in that: the flexible pressure sensor comprises a polymer layer, an electrode layer and a piezoresistive layer which are sequentially arranged from outside to inside, wherein the piezoresistive layer comprises an insulating polymer and a conductive filler filled in the insulating polymer.

5. The rewinding traction elevator according to claim 4, characterized in that: the conductive filler comprises one or more of multiwalled carbon nanotubes, graphene nanoplatelets, and carbon black.

6. The rewinding traction elevator according to claim 4, characterized in that: the insulating polymer is PDMS or PPMS.

7. The rewinding traction elevator according to claim 1, characterized in that: spring support piece includes first holding surface and second holding surface, and set up in the telescopic link and the spring of first holding surface and second holding surface, the both ends of spring respectively with first holding surface and second holding surface are connected, the telescopic link set up in the spring is inboard.

8. The rewinding traction elevator according to claim 1, characterized in that: the soft pressing layer is a rubber layer.

Technical Field

The invention relates to the technical field of elevators, in particular to a rewinding traction elevator.

Background

The elevator is a permanent transportation device which serves a plurality of specific floors in a building, a car of the elevator runs on at least two rows of rigid rails which are vertical to a horizontal plane or have an inclination angle smaller than 15 degrees with a vertical line, a conventional elevator is a compound winding type elevator, a return rope pulley is usually added on the car and a counterweight respectively, a steel wire rope coming from a tractor passes through the return rope pulley and then is fixed on a rope hitch plate at the top of a hoistway, so that the tractor rotates for a distance, the car only moves for half of the distance, and the elevator has the advantages of small power and good control of the tractor.

However, the conventional rewinding traction elevator has problems, for example, in the prior art, when the door is closed, in order to avoid being clamped to an obstacle in the middle of the car door, infrared light curtain sensors are generally arranged on the car doors on two sides, and when the light curtain is shielded, the control system judges that the obstacle exists, at the moment, the car door is controlled to be opened, but the light curtain sensor is composed of a plurality of infrared rays, the sensitivity is directly related to the intensity of the radiation, and when the elevator door is to be closed, the user usually prefers to block the elevator door by hand, because the fingers of the palm are fine and can be positioned at the gap of the light curtain at times, the light curtain is not blocked by the barrier, the controller can not detect the barrier, therefore, the car door cannot be prevented from being closed, and therefore how to further improve the safety performance of the elevator is a problem which needs to be solved urgently in the field.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide a rewinding traction elevator which is safer.

The invention relates to a rewinding traction elevator, which comprises a rewinding traction mechanism, a winding mechanism and a winding mechanism, wherein the rewinding traction mechanism comprises a traction rope; and

a counterweight connected to one end of the hoist rope; and

the lift car is connected with the other end of the hoisting rope and comprises a box body and a lift car door which is arranged oppositely, a pressing mechanism is arranged on one surface opposite to the lift car door,

the pressing mechanism comprises a supporting layer, a pressure sensing layer and a soft pressing layer which are sequentially connected, the pressure sensing layer comprises a plurality of elastic supporting pieces which are vertically arranged in parallel, a pressure sensor corresponding to the elastic supporting pieces is arranged between the elastic supporting pieces and the supporting layer, and the supporting layer is connected with the car door.

Furthermore, the pressure sensors comprise a plurality of pressure sensors, and the pressure sensors are in one-to-one correspondence with the elastic supporting pieces.

Further, the pressure sensor is a flexible pressure sensor.

Furthermore, the flexible pressure sensor comprises a polymer layer, an electrode layer and a piezoresistive layer which are sequentially arranged from outside to inside, wherein the piezoresistive layer comprises an insulating polymer and a conductive filler filled in the insulating polymer.

Further, the conductive filler includes one or more of multiwall carbon nanotubes, graphene nanoplatelets, and carbon black.

Further, the insulating polymer is PDMS or PPMS.

Further, spring support spare includes first holding surface and second holding surface, and set up in the telescopic link and the spring of first holding surface and second holding surface, the both ends of spring respectively with first holding surface and second holding surface are connected, the telescopic link set up in the spring is inboard.

Further, the soft pressing layer is a rubber layer.

By the scheme, the invention at least has the following advantages:

this application is when the less object of volume blocks the sedan-chair door, detects the barrier, has avoided the barrier to be located the unable condition detected often of infrared light curtain dead angle, can improve the security performance effectively.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

Fig. 1 is a schematic view of the construction of a rewinding traction elevator of the present invention;

FIG. 2 is a schematic view of the structure of the car door;

FIG. 3 is a schematic view of a layered structure of an embodiment of a flexible sensor;

the reference numbers are as follows: traction machine 11, guide sheave 12, hoisting rope 13, compound wheel 14, counterweight 2, car 3, door 31, support layer 41, soft pressing layer 42, elastic support 43, pressure sensor 5, polymer layer 51, electrode layer 52, and piezoresistive layer 53.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

As shown in fig. 1 to 3, an embodiment of a rewinding traction elevator includes a rewinding traction mechanism including a traction machine 11, a guide pulley 12, a rewinding pulley 14, and a traction rope 13, wherein the traction rope 13 is wound around the traction machine 11, one end of the traction wheel is fixed in the hoistway by passing around the rewinding pulley 14 on the top of the counterweight 2, and the other end of the traction wheel is fixed in the hoistway by passing around the rewinding pulley 14 on the top of the car 3, and the car 3 is driven to ascend and descend by the rotation of the traction machine 11.

The car 3 includes a box body and a car door 31 disposed oppositely, a driving mechanism is disposed in the box body to control the car door 31, the driving mechanism may be but is not limited to a screw motor, and an infrared light curtain sensor may be disposed on the inner side of the car door 31.

In the embodiment of the application, a pressing mechanism is further disposed on the opposite side of the car door 31, specifically, the pressing mechanism includes a supporting layer 41, a pressure sensing layer and a soft pressing layer 42 which are sequentially connected, wherein the opposite side of the car door 31 is connected with the supporting layer 41, the pressure sensing layer is composed of a plurality of elastic supporting members 43 which are vertically arranged in parallel, and a pressure sensor 5 corresponding to the elastic supporting members 43 is disposed between the elastic supporting members 43 and the supporting layer 41.

In one embodiment, the pressure sensors 5 may be conventional pressure sensors 5, and the number of the pressure sensors 5 corresponds to the number of the elastic supports 43.

The theory of operation of this application is as follows, when sedan-chair door 31 closes, if the barrier blocks sedan-chair door 31 this moment, the barrier then can extrude soft layer 42 that presses, because soft layer 42 that presses has the pliability, it can take place deformation by the position that suffers to press, thereby it takes place deformation to drive several elastic support 43 around pressing the portion, when elastic support 43 takes place deformation, then can extrude rather than corresponding pressure sensor 5, thereby make the controller obtain the signal, learn the existence of barrier, thereby stop continuing to close sedan-chair door 31, wherein, elastic support 43 is used for ordering about soft layer 42 that presses and resets.

In a specific embodiment, the spring support comprises a first supporting surface and a second supporting surface, and a telescopic rod and a spring which are arranged on the first supporting surface and the second supporting surface, wherein two ends of the spring are respectively connected with the first supporting surface and the second supporting surface, and the telescopic rod is arranged on the inner side of the spring.

This application can still make sedan-chair door 31 detect the barrier when the less object of volume blocks sedan-chair door 31 to remedy the unable condition that is detected when the barrier is located infrared light curtain dead angle, its no matter be exclusive use or use with infrared light curtain sensor cooperation all can greatly improve sedan-chair door 31's security performance, avoid the incident.

In another preferred embodiment, the pressure sensor 5 may be a whole-layer flexible pressure sensor 5, wherein the flexible pressure sensor 5 may be an existing flexible pressure sensor 5, and since the flexible pressure sensor 5 can detect local pressure, the sensitivity is better than that of the conventional pressure sensor 5, and when the elastic support 43 is pressed down, the flexible pressure sensor 5 presses the portion corresponding to the elastic support 43, so that the local resistance of the flexible pressure sensor is changed, thereby sensing the existence of an obstacle.

In one embodiment, the flexible pressure sensor 5 used includes a polymer layer 51, an electrode layer 52 and a piezoresistive layer 53 arranged in sequence from outside to inside, wherein the polymer layer 51 is located at the outermost side to perform an insulating function, the electrode layers 52 located at the two sides can be respectively used as a positive electrode and a negative electrode, and the piezoresistive layer 53 includes an insulating polymer and a conductive filler filled in the insulating polymer.

The mechanism of the flexible pressure sensor 5 is that after a certain amount of conductive filler is filled in the insulating polymer, a conductive path can be formed in the insulating polymer, when the insulating polymer is extruded, according to the seepage theory, at this time, a plurality of conductive paths in the insulating polymer are equivalently contacted, the number of the conductive paths is changed, and thus the resistance value of the extruded part is changed, and therefore the effect of detecting pressure is realized, and after any part is extruded, resistance change can be generated, and better sensitivity can be obtained.

In addition, the conductive filler can adopt one or more of multi-walled carbon nanotubes, graphene nanosheets and carbon black, and the conductive filler has excellent conductive performance, is more stable in performance compared with a metal powder filler, is not easy to oxidize, and can effectively prolong the service life of the flexible pressure sensor 5.

Further, the insulating polymer is preferably PDMS (polydimethylsiloxane) or PPMS (polyphenylmethylsiloxane), and the polymer of the outermost layer may be rubber.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.