CN112357739A

CN112357739A - Escalator handrail and extended high-precision detection system and method thereof

Info

Publication number: CN112357739A
Application number: CN202011166426.6A
Authority: CN
Inventors: 黄学斌; 郑祥盘; 伏喜斌; 郑强; 徐火力
Original assignee: Xiamen Special Equipment Inspection Institute; Minjiang University; Fujian Special Equipment Inspection and Research Institute
Current assignee: Xiamen Special Equipment Inspection Institute; Minjiang University; Fujian Special Equipment Inspection and Research Institute
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-02-12
Anticipated expiration: 2040-10-27
Also published as: CN112357739B

Abstract

A high-precision detection system for escalator hand strap and extension thereof and a hand strap extension detection method relate to the technical field of elevator safety. The detection system comprises a laser emitter, a laser detector, a measurement circuit and a capacitance sensor, wherein the laser emitter and the laser detector are integrated in the measurement circuit; the laser emitter and the laser detector are respectively arranged at two ends of the hand strap, and a laser light path of the laser emitter is arranged along the advancing direction of the hand strap; the laser light path is positioned on the outer side of the hand strap, and the distance between the laser light path and the edge of the hand strap is equal to the maximum safe displacement; the capacitance sensor is used for sensing a hand which is gripped on the handrail belt and blocks the laser light path to move, and therefore the handrail belt is prevented from being detected mistakenly. The displacement detection device is simple in structure, easy to implement and apply, capable of sensitively and accurately detecting the displacement problem of the extension of the hand strap, high in response rate, safe and reliable.

Description

Escalator handrail and extended high-precision detection system and method thereof

Technical Field

The invention relates to the technical field of elevator safety, in particular to a handrail belt of an escalator, a high-precision detection system for the extension of the handrail belt and a handrail belt extension detection method.

Background

In the running process of the escalator, the distance between the extension of the handrail and surrounding objects has strict requirements, which is directly related to the running safety of the escalator. However, the existing means for monitoring the change condition of the extension of the hand strap has certain defects, so that the safe operation of the escalator has certain hidden troubles.

In view of this, the present application is specifically made.

Disclosure of Invention

The invention aims to provide a high-precision detection system for the escalator handrail and the extension thereof, which has the advantages of simple structure, easy implementation and application, high response rate, safety and reliability, and can detect the displacement problem of the extension of the handrail very sensitively and accurately.

The second purpose of the invention is to provide a handrail belt extension detection method which is simple and rapid, easy to implement and apply, simple to operate, high in execution efficiency, accurate and reliable.

The embodiment of the invention is realized by the following steps:

the utility model provides an automatic staircase handrail area and epitaxial high accuracy detecting system thereof, it includes: the device comprises a laser emitter, a laser detector, a measuring circuit and a capacitance sensor, wherein the laser emitter and the laser detector are integrated in the measuring circuit; the laser emitter and the laser detector are respectively arranged at two ends of the hand strap, and a laser light path of the laser emitter is arranged along the advancing direction of the hand strap; the laser light path is positioned on the outer side of the hand strap, and the distance between the laser light path and the edge of the hand strap is equal to the maximum safe displacement; the capacitance sensor is used for sensing a hand which is gripped on the handrail belt and blocks the laser light path to move, and therefore the handrail belt is prevented from being detected mistakenly.

Further, the laser light path of the laser emitter is arranged along the traveling direction of the ascending section/the descending section of the handrail belt, and the laser light path is positioned at the outer side of the ascending section/the descending section.

Furthermore, the escalator handrail belt and the extended high-precision detection system thereof further comprise position adjusting components, the laser emitter and the laser detector are both provided with a group of position adjusting components, and the position adjusting components comprise sliding rails, sliding seats, screw rods and driving rods. The sliding seat can be matched with the sliding rail in a sliding mode, and the laser emitter and the laser detector are installed on the sliding seat correspondingly. The screw rod is arranged along the length direction of the slide rail and is in transmission fit with the slide seat, the driving rod is in transmission fit with the screw rod through a bevel gear, and a hand wheel is arranged at the end part of the driving rod.

Furthermore, the position adjusting components are arranged in the inner cavities of the bottom plates at two ends of the escalator, and the laser emitter and the laser detector extend out of the openings. The hand wheel is positioned in the protection cavity, and the protection cavity is provided with a cover plate. The cover plate is provided with damping and can be rotatably matched with the bottom plate, the lever is further installed in the inner cavity, one end of the lever extends to the end portion of the screw rod and is provided with a butting block used for butting with the end portion of the screw rod, and the wall surface of the butting block is subjected to frosting treatment. The other end of the lever extends towards the rotating shaft of the cover plate.

The rotating shaft is provided with a first extension arm and a second extension arm, and the cover plate is provided with a first rotation stop point and a second rotation stop point. When the cover plate is positioned at the first rotation stop point, the cover plate is in a covering state, and the first extension arm pushes the lever to enable the abutting block to abut against the end part of the screw rod, so that the screw rod is locked. When the cover plate is positioned at the second rotation stop point, the cover plate is in an opening state, and the second extension arm pushes the lever to separate the abutting block from the end part of the screw rod, so that the screw rod is unlocked.

Furthermore, the elastic piece is abutted between one side of the lever, which is far away from the abutting block, and the side wall of the inner cavity, and the elastic piece is arranged corresponding to the abutting block.

Furthermore, the end wall of one end, close to the abutting block, of the screw rod is provided with a convex block, the convex block is in a semicircular shape and is arranged along the radial direction of the screw rod in a protruding mode through the end wall, and the convex blocks are evenly arranged at intervals along the circumferential direction of the screw rod.

Further, one side wall of the abutting block, which is close to the screw rod, is provided with a first protruding portion, a second protruding portion and a concave portion. The wall surface of the first protruding portion is a spherical wall, the second protruding portion extends continuously along the circumferential direction of the first protruding portion to form a ring shape, the second protruding portion is arranged around the first protruding portion and is arranged at an interval with the first protruding portion, and the cross section of the second protruding portion is semicircular. The depressed part is located in the area between the first raised part and the second raised part, and the depressed part also extends continuously along the circumference of the first raised part and is ring-shaped, and the cross section of the depressed part is semicircular. The first protruding portion, the second protruding portion and the recessed portion are concentrically arranged, wall surfaces of the first protruding portion, the second protruding portion and the recessed portion are mutually connected and tangent, and the wall surfaces of the first protruding portion, the second protruding portion and the recessed portion are all frosted.

The arc diameter corresponding to the wall surface of the second bulge part is smaller than the arc diameter corresponding to the wall surface of the first bulge part, and the bulge height of the second bulge part is larger than the bulge height of the first bulge part. The arc diameter corresponding to the convex block is larger than that corresponding to the concave part.

Further, one side of the second protruding portion, which is close to the first protruding portion, is covered with a sponge layer, the sponge layer extends along the second protruding portion to form an annular shape, and the sponge layer is arranged close to the top of the second protruding portion. The sponge layer protrudes towards one side where the first protruding part is located.

Further, one end of the lug, which is far away from the central axis of the screw rod, extends to the side wall of the screw rod.

A handrail belt extension detection method using the escalator handrail belt and the extension high-precision detection system thereof comprises the following steps: emitting characteristic laser light to the laser detector by using the laser emitter; when the laser detector cannot receive the characteristic laser and does not receive the electric signal of the capacitance sensor, recording the duration time of the characteristic laser which cannot be received; and when the laser detector cannot receive the characteristic laser and simultaneously receives the electric signal of the capacitance sensor, judging that the detection is false detection.

The embodiment of the invention has the beneficial effects that:

when the escalator handrail belt and the extended high-precision detection system thereof provided by the embodiment of the invention are used, when the handrail belt is not deviated or the deviation amount is still within a safety range, the handrail belt does not shield a laser light path, and characteristic light rays emitted by a laser emitter can be smoothly received by a laser detector, namely laser signals can be continuously received.

When the offset of the hand strap exceeds the maximum safe displacement, the hand strap needs to be revised again, thereby avoiding influencing the running safety of the escalator. At the moment, in the operation process of the handrail belt, the laser light path can be shielded by the offset part of the handrail belt, so that the characteristic light emitted by the laser emitter cannot be successfully received by the laser detector, and the laser detector cannot receive laser signals. In other words, when the situation (the laser detector cannot receive the laser signal) occurs, it is proved that the laser light path is blocked, the walking belt is deviated, and the walking belt needs to be overhauled. In addition, through the setting of the capacitance inductor, the accuracy rate of detection can be improved, and the false alarm is reduced.

In a specific use, a characteristic laser is emitted to a laser detector by a laser emitter. When the laser detector fails to receive the characteristic laser light, the duration of time during which the characteristic laser light is not received may be recorded. If the shielded condition occurs periodically, the deformation/deviation of a part of the hand-held belt is indicated, and the deformation/deviation area of the hand-held belt periodically passes through the monitoring area along with the running of the escalator.

Wherein if the occlusion occurs periodically and the duration is constant, the length of the deformation/deflection zone can be calculated by combining the occlusion duration, the handrail belt running speed and the length of the monitored area.

In general, the escalator handrail and the extended high-precision detection system thereof provided by the embodiment of the invention have the advantages of simple structure, easiness in implementation and application, capability of sensitively and accurately detecting the problem of extended displacement of the handrail, high response rate, safety and reliability. The handrail belt extension detection method provided by the embodiment of the invention is simple and rapid, easy to implement and apply, simple to operate, high in execution efficiency, accurate and reliable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic circuit structure diagram of an escalator handrail and an extended high-precision detection system thereof according to an embodiment of the invention;

FIG. 2 is a schematic view of the arrangement of the escalator handrail and the extended high-precision detection system;

FIG. 3 is a schematic structural view of the cover plate at a first rotation stop point;

FIG. 4 is a schematic structural view of the cover plate at a second rotation stop point;

FIG. 5 is a schematic view of another arrangement of the escalator handrail and its extended high-precision detection system;

FIG. 6 is a schematic view of the fit relationship between the lead screw and the abutment block;

FIG. 7 is a schematic cross-sectional view of the lead screw and the abutment block;

FIG. 8 is a schematic view of the structure of the lead screw in contact with the contact block;

FIG. 9 is a perspective view of the abutment block;

fig. 10 is a schematic end structure view of the screw rod.

Icon: a high-precision detection system 1000 for escalator hand strap and extension thereof; a laser transmitter 100; a laser detector 200; a measurement circuit 300; a slide rail 410; a sliding seat 420; a lead screw 430; a bump 431; a drive rod 440; a bevel gear 450; a handwheel 460; a handrail belt 500; up/down segments 510; a base plate 600; an inner cavity 610; an opening 620; a cover plate 630; a lever 640; an abutment block 650; a first convex portion 651; the second boss 652; a recess 653; a sponge layer 654; a first extension arm 660; a second extension arm 670; the elastic member 680.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 1-2, the present embodiment provides a handrail 500 and a high precision detection system 1000 for the extension thereof. The handrail 500 and the extended high-precision detection system 1000 thereof comprise: laser emitter 100, laser detector 200 and measurement circuit 300, laser emitter 100 and laser detector 200 are all integrated in measurement circuit 300.

The laser emitter 100 and the laser detector 200 are respectively arranged at two ends of the hand strap 500, and a laser light path of the laser emitter 100 is arranged along the advancing direction of the hand strap 500, namely the laser light path is arranged parallel to the hand strap 500. The laser light path is positioned at the outer side of the hand strap 500, and the distance between the laser light path and the edge of the hand strap 500 is equal to the maximum safe displacement.

In the using process, when the handrail 500 is not shifted or the offset is still within the safety range, the handrail 500 does not shield the laser path, and the characteristic light emitted by the laser emitter 100 can be successfully received by the laser detector 200, i.e. the laser signal can be continuously received.

When the offset amount of the handrail 500 exceeds the maximum safety displacement amount, the handrail 500 needs to be re-corrected, thereby preventing the operational safety of the escalator from being affected. At this time, in the operation process of the handrail 500, the offset portion of the handrail will block the laser path, so that the characteristic light emitted by the laser emitter 100 cannot be successfully received by the laser detector 200, and the laser detector 200 cannot receive the laser signal. In other words, when this condition occurs (the laser detector 200 cannot receive the laser signal), it is proved that the laser path is blocked, the walking belt is shifted, and the walking belt needs to be overhauled.

Generally, the handrail 500 and the extended high-precision detection system 1000 thereof have simple structure, easy implementation and application, can detect the displacement problem of the extension of the handrail 500 very sensitively and accurately, and have high response rate, safety and reliability.

It should be noted that, in a specific use process, the laser emitter 100 is used to emit characteristic laser light to the laser detector 200. When the laser detector 200 fails to receive the characteristic laser light, the duration of time during which the characteristic laser light is not received may be recorded. If the shielded condition occurs periodically, the deformation/deviation of a part of the hand-held belt is indicated, and the deformation/deviation area of the hand-held belt periodically passes through the monitoring area along with the running of the escalator.

Wherein if the occlusion occurs periodically and the duration is constant, the length of the deformation/deflection zone can be calculated by combining the occlusion duration, the moving speed of the handrail 500 and the length of the monitored area.

In the present embodiment, the laser path of the laser transmitter 100 is disposed along the traveling direction of the up/down section 510 of the handrail belt 500, and the laser path is located at the outer side of the up/down section 510.

Further, the handrail 500 and the extended high-precision detection system 1000 thereof further comprise a position adjustment assembly, and the laser emitter 100 and the laser detector 200 are configured with a set of position adjustment assemblies.

Referring to fig. 3-4, the position adjustment assembly includes a slide rail 410, a slide seat 420, a lead screw 430 and a driving rod 440. The sliding seat 420 is slidably fitted to the sliding rail 410, and the laser emitter 100 and the laser detector 200 are correspondingly mounted on the sliding seat 420. The screw rod 430 is arranged along the length direction of the slide rail 410 and is in transmission fit with the slide seat 420, the driving rod 440 is in transmission fit with the screw rod 430 through a bevel gear 450, and a hand wheel 460 is arranged at the end of the driving rod 440.

The driving rod 440 can be driven by rotating the handwheel 460, and the driving rod 440 drives the screw rod 430 to rotate through the bevel gear 450, so as to drive the sliding seat 420 to move along the sliding rail 410, thereby achieving the purpose of adjusting the positions of the laser emitter 100 and the laser detector 200.

Through the design, the specific positions of the laser transmitter 100 and the laser detector 200 can be specifically adjusted according to different maximum safe displacement standards, so that the adjustment of the distance between a laser light path and the extension of the handrail 500 is realized. This further improves the adaptability of the handrail 500 and the extended high-precision detection system 1000 thereof to escalators of different specifications.

In this embodiment, the position adjusting assemblies are disposed in the inner cavities 610 of the bottom plates 600 at both ends of the escalator, and the laser emitter 100 and the laser detector 200 are protruded from the openings 620 communicating the inner cavities 610 with the outside.

The handwheel 460 is located in a protection cavity having a cover plate 630. The cover 630 is damped and rotatably fitted to the base 600, the inner cavity 610 is further provided with a lever 640, one end of the lever 640 extends to the end of the lead screw 430 and is provided with an abutting block 650 for abutting against the end of the lead screw 430, and the wall surface of the abutting block 650 is frosted. The other end of the lever 640 extends toward the rotation axis of the cover plate 630.

The hinge has a first extension arm 660 and a second extension arm 670, and the cover 630 has a first rotation stop and a second rotation stop. When the cover 630 is located at the first rotation stop point, the cover 630 is in a closed state, and the first extension arm 660 pushes the lever 640, so that the abutting block 650 abuts against the end of the screw 430, thereby locking the screw 430. When the cover 630 is located at the second rotation dead point, the cover 630 is in an open state, and the second extension arm 670 pushes the lever 640 to separate the abutment block 650 from the end of the lead screw 430, thereby releasing the locking of the lead screw 430.

Through the design, when the position of the laser light path needs to be adjusted, the cover plate 630 is opened (i.e. the cover plate 630 rotates from the first rotation dead point to the second rotation dead point), the second extension arm 670 pushes the lever 640, so that the abutting block 650 is separated from the end of the screw rod 430, the locking of the screw rod 430 is released, and the adjustment can be performed through rotating the hand wheel 460 at the moment.

After the adjustment is completed, the cover 630 is closed (i.e., the cover 630 is rotated from the second rotation stop point to the first rotation stop point), and the first extension arm 660 pushes the lever 640, so that the abutment block 650 abuts against the end of the screw 430, thereby completing the locking of the screw 430. Therefore, after the adjustment is finished, the screw rod 430 can be locked, and the monitoring failure caused by accidental rotation is prevented.

It should be noted that, for the lower floor 600, the position adjustment assembly is provided in the inner cavity 610 of the floor 600, and the laser emitter 100/laser detector 200 is protruded from the opening 620 and disposed toward the traveling direction of the upper/lower sections 510 of the handrail 500. For the upper end of the base plate 600, a position adjusting assembly may be erected at the outer side of the walking belt for directly receiving a laser signal.

Of course, the position adjusting assembly may be further disposed in the inner cavity 610 of the upper end base plate 600, and the laser emitter 100/laser detector 200 may be extended from the opening 620 and disposed toward the upper end of the up/down section 510 of the handrail 500, in which case the direction of the characteristic light emitted from the laser emitter 100 may be changed by disposing a prism at the upper end of the up/down section 510, so that the characteristic light is redirected to the laser detector 200, as shown in fig. 5.

Further, an elastic member 680 is abutted between a side of the lever 640 away from the abutting block 650 and a sidewall of the inner cavity 610, and the elastic member 680 is disposed corresponding to the abutting block 650. The elastic member 680 may also assist in applying force when the cover 630 is at the first rotation dead center to improve the stability of the state of the abutting block 650 in the locked state. When the cover 630 is located at the second rotation dead point, the elastic force of the elastic member 680 needs to be overcome, which may also increase the stabilizing force of the cover 630 and prevent the cover 630 from being opened accidentally.

Referring to fig. 6 to 10, an end wall of the screw 430 close to the abutting block 650 is provided with a protrusion 431, the protrusion 431 protrudes from the end wall to form a semicircle shape and is disposed along the radial direction of the screw 430, the plurality of protrusions 431 are uniformly spaced along the circumferential direction of the screw 430, and the plurality of protrusions 431 form an annular structure.

One side wall of the abutting block 650 close to the screw 430 has a first boss 651, a second boss 652 and a recess 653.

The wall surface of the first convex portion 651 is a spherical wall, the second convex portion 652 extends continuously along the circumferential direction of the first convex portion 651 in a ring shape, the second convex portion 652 is arranged around the first convex portion 651 and spaced from the first convex portion 651, and the cross section of the second convex portion 652 is semicircular. The recessed portion 653 is located in a region between the first and

second bosses

651, 652, the recessed portion 653 also extends continuously in a ring shape along the circumferential direction of the first boss 651, and the cross section of the recessed portion 653 is semicircular.

The first protruding portion 651, the second protruding portion 652 and the recessed portion 653 are concentrically arranged, and the wall surfaces of the first protruding portion 651, the second protruding portion 652 and the recessed portion 653 are mutually connected and tangent, and are frosted.

The diameter of the arc corresponding to the wall surface of the second convex portion 652 is smaller than the diameter of the arc corresponding to the wall surface of the first convex portion 651, and the height of the second convex portion 652 is greater than the height of the first convex portion 651. The diameter of the arc corresponding to the protrusion 431 is larger than that of the arc corresponding to the recess 653.

With the above design, when the abutting block 650 abuts against the end of the lead screw 430, the protrusion 431 of the lead screw 430 abuts against the corresponding position of the corresponding recess 653, specifically, the protrusion 431 abuts against the sidewalls of the first protrusion 651 and the second protrusion 652, or abuts against the vicinity of the boundary between the first protrusion 651 and the second protrusion 652 and the recess 653.

On one hand, the end part of the screw rod 430 is positioned, and on the other hand, the locking effect of the screw rod 430 is greatly improved, so that the screw rod 430 is prevented from rotating accidentally.

In this embodiment, a sponge layer 654 covers a side of the second protruding portion 652 close to the first protruding portion 651, the sponge layer 654 extends along the second protruding portion 652 to form a ring shape, and the sponge layer 654 is disposed close to the top of the second protruding portion 652. The sponge layer 654 protrudes toward the side where the first convex portion 651 is located. Through this design, when butt piece 650 is about to the butt with the tip of lead screw 430, sponge layer 654 contact can be preceeded to the lug 431, along with lead screw 430 and butt piece 650 further are close, sponge layer 654 can be crowded to the lug 431, and at this in-process, sponge layer 654 can clear up the surface of lug 431, avoids the surface of lug 431 to be adhered with the foreign particles to ensure that lug 431 can fully laminate with butt piece 650, avoid unexpected the rotation.

As described above, if the foreign particles are adhered to the surface of the bump 431, the foreign particles are pressed during the process of attaching the bump 431 to the abutment block 650. If the hardness of the foreign particles is small, the foreign particles are crushed, and the screw 430 is easily accidentally rotated during the crushing process (particularly, when only the foreign particles are adhered to the individual protrusions 431), thereby affecting the positional accuracy of the sliding seat 420. If the hardness of the impurity particles is high, the frosted surface of the bump 431 or the abutting block 650 is easily scratched, on one hand, accidental rotation is easily caused, on the other hand, the contact surface is also damaged, and the locking effect is influenced.

Further, one end of the protrusion 431 away from the central axis of the lead screw 430 extends to the side wall of the lead screw 430.

Referring to fig. 3 to 4, as a further improvement, the handrail 500 and the extended high-precision detection system 1000 further include a plurality of capacitive sensors 700 spaced apart from the top of the base plate 600 and near the lower edge of the handrail 500. The capacitance sensor 700 is used for sensing the hand held on the handrail 500, so as to block the hand of the laser light path, and further prevent the handrail 500 from being detected by the extended high-precision detection system 1000. Specifically, when the hand grips the handrail 500 to approach the capacitive sensor 700, the capacitive sensor 700 is spaced apart from the handrail 500, and thus generates an electrical signal in time sequence, and at this time, if a blocking signal of the handrail 500 and the extended high-precision detection system 1000 is detected at the same time, it can be determined that the handrail 500 is not shifted but is erroneously blocked by a human hand. When the signal of the capacitive sensor 700 disappears, the blocking signal of the hand strap 500 and the extended high-precision detection system 1000 can be detected, and then the deviation of the hand strap 500 is judged, so that the detection accuracy is improved. Preferably, the distance between the capacitive sensors 700 is 0.5 to 1 meter.

The present embodiment further provides a handrail 500 extension detection method using the handrail 500 and the high-precision handrail extension detection system 1000, which includes: characteristic laser light is emitted to the laser detector 200 using the laser emitter 100. When the laser detector 200 fails to receive the characteristic laser light, the duration of time during which the characteristic laser light is not received is recorded. The specific steps have been described in detail above and are not described in detail here.

In conclusion, the handrail 500 and the extended high-precision detection system 1000 thereof have the advantages of simple structure, easy implementation and application, high response rate, safety and reliability, and can detect the displacement problem of the extension of the handrail 500 very sensitively and accurately. The method for detecting the extension of the hand strap 500 is simple, rapid, easy to implement and apply, simple to operate, high in execution efficiency, accurate and reliable.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an automatic staircase handrail area rather than epitaxial high accuracy detecting system which characterized in that includes: the device comprises a laser emitter, a laser detector, a measuring circuit and a capacitance sensor, wherein the laser emitter and the laser detector are integrated in the measuring circuit; the laser emitter and the laser detector are respectively arranged at two ends of the hand strap, and a laser light path of the laser emitter is arranged along the advancing direction of the hand strap; the laser light path is positioned on the outer side of the hand strap, and the distance between the laser light path and the edge of the hand strap is equal to the maximum safe displacement; the capacitance sensor is used for sensing a hand which is gripped on the handrail belt and blocks the laser light path to move, and therefore the handrail belt is prevented from being detected mistakenly.

2. The escalator handrail with high precision detection system of claim 1, wherein the laser path of the laser emitter is arranged along the traveling direction of the ascending/descending section of the handrail, and the laser path is located outside the ascending/descending section.

3. The escalator handrail with high-precision detection system of claim 1 or 2, characterized in that the escalator handrail with high-precision detection system of extension thereof further comprises a position adjusting assembly, the laser emitter and the laser detector are both configured with a set of the position adjusting assembly, the position adjusting assembly comprises a slide rail, a sliding seat, a screw rod and a driving rod; the sliding seat is matched with the sliding rail in a sliding mode, and the laser emitter and the laser detector are installed on the sliding seat correspondingly; the screw rod is arranged along the length direction of the sliding rail and is in transmission fit with the sliding seat, the driving rod is in transmission fit with the screw rod through a bevel gear, and a hand wheel is arranged at the end part of the driving rod.

4. The escalator handrail with extended high-precision detection system of claim 3, wherein the position adjusting components are arranged in the inner cavities of the bottom plates at two ends of the escalator, and the laser emitter and the laser detector extend out of the openings; the hand wheel is positioned in a protection cavity, and the protection cavity is provided with a cover plate; the cover plate is provided with damping and can be rotatably matched with the bottom plate, the inner cavity is also provided with a lever, one end of the lever extends to the end part of the screw rod and is provided with a butting block which is used for butting against the end part of the screw rod, and the wall surface of the butting block is frosted; the other end of the lever extends towards the rotating shaft of the cover plate;

the rotating shaft is provided with a first extension arm and a second extension arm, and the cover plate is provided with a first rotation stop point and a second rotation stop point; when the cover plate is positioned at the first rotation stop point, the cover plate is in a covering state, and the first extension arm pushes the lever to enable the abutting block to abut against the end part of the screw rod, so that the screw rod is locked; when the cover plate is positioned at the second rotation dead point, the cover plate is in an opening state, and the second extension arm pushes the lever to separate the abutting block from the end part of the screw rod, so that the locking of the screw rod is released.

5. The escalator handrail with extended high-precision detection system of claim 4, wherein an elastic member is abutted between one side of the lever far away from the abutting block and the side wall of the inner cavity, and the elastic member is arranged corresponding to the abutting block.

6. The escalator handrail with extended high-precision detection system according to claim 5, wherein the end wall of the screw rod near the abutting block is provided with a convex block, the convex block is protruded from the end wall to be semicircular and arranged along the radial direction of the screw rod, and the convex blocks are uniformly arranged at intervals along the circumferential direction of the screw rod.

7. The escalator handrail with extended high-precision detection system according to claim 6, wherein the side wall of the butt-joint block near the screw rod is provided with a first convex part, a second convex part and a concave part; the wall surface of the first protruding part is a spherical wall, the second protruding part continuously extends along the circumferential direction of the first protruding part to form a ring shape, the second protruding part is arranged around the first protruding part and is arranged at an interval with the first protruding part, and the cross section of the second protruding part is semicircular; the concave part is positioned in the area between the first convex part and the second convex part, the concave part also continuously extends along the circumferential direction of the first convex part to form a ring shape, and the cross section of the concave part is semicircular; the first protruding part, the second protruding part and the sunken part are concentrically arranged, the wall surfaces of the first protruding part, the second protruding part and the sunken part are mutually connected and tangent, and the wall surfaces of the first protruding part, the second protruding part and the sunken part are all subjected to sanding treatment;

the arc diameter corresponding to the wall surface of the second bulge part is smaller than the arc diameter corresponding to the wall surface of the first bulge part, and the bulge height of the second bulge part is larger than the bulge height of the first bulge part; the arc diameter corresponding to the convex block is larger than that corresponding to the concave part.

8. The escalator handrail and extended high-precision detection system according to claim 7, wherein a sponge layer is covered on one side of the second protruding portion close to the first protruding portion, the sponge layer extends along the second protruding portion in a ring shape, and the sponge layer is arranged close to the top of the second protruding portion; the sponge layer protrudes towards one side where the first protruding portion is located.

9. The escalator handrail with extended high-precision detection system according to claim 8, wherein one end of the projection, which is far away from the central axis of the lead screw, extends to the side wall of the lead screw.

10. A handrail extension detection method using the escalator handrail and the extended high-precision detection system thereof according to any one of claims 1 to 9, comprising the steps of: emitting characteristic laser light to the laser detector by using the laser emitter; when the laser detector cannot receive the characteristic laser and does not receive the electric signal of the capacitance sensor, recording the duration time of the characteristic laser which cannot be received; and when the laser detector cannot receive the characteristic laser and simultaneously receives the electric signal of the capacitance sensor, judging that the detection is false detection.