阅读说明：本技术 扶梯的回转链和扶梯 (Escalator and rotating chain thereof ) 是由 姚萃 顾晓嫣 于 2019-12-06 设计创作，主要内容包括：本发明公开一种扶梯的回转链,包括相互链接在一起的多个回转链单元。每个回转链单元包括：回转链链节,具有前端和后端；和一对滚动轮,对称地安装在回转链链节的前端的左右两侧上。每个回转链单元还包括一对支撑腿,一对支撑腿对称地安装在回转链链节的左右两侧上；一对支撑腿适于通过抵靠在扶手带支撑件的中间凸起上来限制回转链单元的极限偏移位置；当回转链单元偏移到极限偏移位置时,一对滚动轮与扶手带支撑件不接触,从而可防止一对滚动轮被扶手带支撑件磨损,从而能够有效地避免因滚动轮与扶手带支撑件摩擦产生的噪音和磨损问题,提高了回转链的使用寿命。(The invention discloses a rotary chain of an escalator, which comprises a plurality of rotary chain units which are mutually linked together. Each of the swing chain units includes: a rotating chain link having a front end and a rear end; and a pair of rolling wheels symmetrically installed on both left and right sides of the front end of the revolving chain link. Each rotary chain unit further comprises a pair of supporting legs, and the pair of supporting legs are symmetrically arranged on the left side and the right side of the rotary chain link; a pair of support legs adapted to limit the extreme offset position of the swing chain unit by abutting against the middle protrusion of the handrail belt support; when the rotary chain unit deviates to the extreme deviation position, the pair of rolling wheels is not contacted with the handrail support piece, so that the pair of rolling wheels can be prevented from being abraded by the handrail support piece, the problems of noise and abrasion caused by friction between the rolling wheels and the handrail support piece can be effectively avoided, and the service life of the rotary chain is prolonged.)

1. A revolving chain for an escalator comprising:

a plurality of revolving chain units (200) linked to each other, adapted to be installed in a handrail support (100) of an escalator,

each of the swing chain units (200) includes:

a rotating chain link (210) having a front end (211) and a rear end (212); and

a pair of rolling wheels (220) symmetrically installed on both left and right sides of a front end (211) of the revolving chain link (210),

the method is characterized in that:

each of the swing chain units (200) further includes a pair of support legs (230), the pair of support legs (230) being symmetrically installed on left and right sides of the swing chain link (210);

the pair of support legs (230) is adapted to limit the extreme offset position of the swing chain unit (200) by abutting on the middle protrusion (130) of the handrail belt support (100);

when the swing chain unit (200) is biased to the extreme biased position, the pair of rolling wheels (220) are not in contact with the handrail support (100), so that the pair of rolling wheels (220) can be prevented from being worn by the handrail support (100).

2. The escalator revolving chain according to claim 1, characterized in that:

a distance (D) between the pair of support legs (230) is smaller than a distance (D1) between the pair of rolling wheels (220) such that when the swing chain unit (200) is deflected to the extreme deflection position, one of the pair of support legs (230) is in contact with the middle protrusion (130) of the handrail belt support (100) and the pair of rolling wheels (220) is not in contact with the middle protrusion (130) of the handrail belt support (100).

3. The escalator revolving chain according to claim 2, characterized in that:

the distance (D) between the pair of support legs (230) is greater than the distance (D2) between the left and right lateral surfaces of the middle protrusion (130) of the handrail belt support (100) to allow the swing chain unit (200) to be left-right shiftable.

4. A revolving chain for an escalator as claimed in claim 3, wherein:

when the swing chain unit (200) is mounted to the handrail support (100), the pair of support legs (230) are located at both left and right sides of the middle protrusion (130) of the handrail support (100), and the pair of support legs (230) extend downward to a position lower than the top surface of the middle protrusion (130) of the handrail support (100) such that the support legs (230) can abut on the side surfaces of the middle protrusion (130) of the handrail support (100).

5. The escalator revolving chain according to any one of claims 1-4, characterized in that:

the extreme excursion positions comprise a left extreme excursion position and a right extreme excursion position, and the excursion range of the slewing chain unit (200) is limited between the left extreme excursion position and the right extreme excursion position.

6. The escalator revolving chain according to claim 5, characterized in that:

when the swing chain unit (200) is offset to the left extreme offset position, the right one (230) of the pair of support legs (230) abuts on the right side surface of the middle protrusion (130) of the handrail belt support (100), and the left one (230) of the pair of support legs (230) does not contact the middle protrusion (130) of the handrail belt support (100).

7. The escalator revolving chain according to claim 6, characterized in that:

when the swing chain unit (200) is offset to the right extreme offset position, the left one (230) of the pair of support legs (230) abuts on the left side surface of the middle protrusion (130) of the handrail belt support (100), and the right one (230) of the pair of support legs (230) does not contact the middle protrusion (130) of the handrail belt support (100).

8. The escalator revolving chain according to claim 1, characterized in that:

support shafts (213) are provided on both left and right sides of a front end (211) of the rotating chain link (210), respectively, and the rolling wheels (220) are mounted on the support shafts (213).

9. The escalator revolving chain according to claim 1, characterized in that:

an inwards concave notch (214) is formed at the front end (211) of the revolving chain link (210);

the rear end (212) of the swivel chain link (210) is adapted to be received in a notch (214) of the front end (211) of another swivel chain link (210) and rotatably linked to the front end (211) of the other swivel chain link (210).

10. The escalator revolving chain according to claim 1, characterized in that:

the pair of support legs (230) are mounted at a position between the front end (211) and the rear end (212) of the swivel chain link (210).

11. An escalator, comprising:

a handrail belt support (100);

the swing chain of any one of claims 1-10, mounted in the handrail belt support (100); and

a handrail belt supported on the rolling wheel (220) of the revolving chain.

12. An escalator as claimed in claim 11, wherein:

the handrail support (100) comprises a pair of side walls (110) and a bottom wall (120), and a middle protrusion (130) is formed on the bottom wall (120).

13. The escalator of claim 12, wherein:

a swing chain link (210) of the swing chain is mounted to a top wall of a middle protrusion (130) of the handrail belt support (100).

14. The escalator of claim 12, wherein:

the rolling wheel (220) and the support leg (230) of the swivel chain are received in a recess between the side wall (110) and the middle protrusion (130) of the handrail belt support (100).

Technical Field

The invention relates to a rotating chain for an escalator and the escalator comprising the rotating chain.

Background

In the prior art, it is common to have a curved handrail frame (or called handrail support or handrail guide) at the entrance or exit of the escalator. A rotating chain is installed in the handrail frame, and both ends of the rotating chain are fixedly riveted to the handrail frame, respectively. The articulated chain typically comprises a plurality of articulated chain units linked to each other. Each of the revolving chain units includes a revolving chain link and a pair of rolling wheels mounted on both sides of the revolving chain link. The handrail belt of the escalator is supported on the rolling wheels of the revolving chain. When the hand strap moves, the rolling wheels on the rotary chain can rotate around the respective central axes under the driving of the hand strap. Thus, the handrail can be ensured to run smoothly.

In the in-service use in-process, when the handrail area removed, the handrail area can drive the gyration chain and rock about, and this can lead to the rolling wheel on the gyration chain to remove about, leads to the rolling wheel very easily to touch handrail area support piece's internal surface. As soon as the rolling wheel hits the inner surface of the handrail support, noise is generated and the rolling wheel is severely worn, accelerating the ageing of the rolling wheel.

Disclosure of Invention

An object of the present invention is to solve at least one of the above problems and disadvantages in the prior art.

According to one aspect of the present invention, there is provided a revolving chain of an escalator, comprising: a plurality of swing chain units. The plurality of revolving chain units are linked to each other and adapted to be installed in a handrail support of an escalator. Each of the swing chain units includes: a rotating chain link having a front end and a rear end; and a pair of rolling wheels symmetrically installed on both left and right sides of a front end of the swing chain link. Each of the swing chain units further includes a pair of support legs symmetrically installed on left and right sides of the swing chain link; the pair of support legs are adapted to limit the extreme offset position of the swing chain unit by abutting on the middle protrusion of the handrail belt support; when the swing chain unit is deflected to the extreme deflection position, the pair of rolling wheels are not in contact with the handrail support member, so that the pair of rolling wheels can be prevented from being worn by the handrail support member.

According to an exemplary embodiment of the present invention, a distance between the pair of support legs is smaller than a distance between the pair of rolling wheels, so that when the swing chain unit is deflected to the extreme deflection position, one of the pair of support legs is in contact with the middle protrusion of the handrail belt support and the pair of rolling wheels is not in contact with the middle protrusion of the handrail belt support.

According to another exemplary embodiment of the present invention, a distance between the pair of support legs is greater than a distance between left and right sides of a middle protrusion of the handrail belt support to allow the swing chain unit to be left-right shiftable.

According to another exemplary embodiment of the present invention, when the swing chain unit is mounted to the handrail support, the pair of support legs are located at left and right sides of the middle protrusion of the handrail support, and the pair of support legs extend downward to a position lower than the top surface of the middle protrusion of the handrail support so that the support legs can abut against the side surfaces of the middle protrusion of the handrail support.

According to another exemplary embodiment of the present invention, the extreme excursion positions comprise a left extreme excursion position and a right extreme excursion position, the excursion range of the slewing chain unit being limited between the left extreme excursion position and the right extreme excursion position.

According to another exemplary embodiment of the present invention, when the swing chain unit is offset to the left extreme offset position, the right one of the pair of support legs abuts on the right side surface of the middle protrusion of the handrail belt support, and the left one of the pair of support legs does not contact the middle protrusion of the handrail belt support.

According to another exemplary embodiment of the present invention, when the swing chain unit is offset to the right extreme offset position, the left one of the pair of support legs abuts on the left side surface of the middle protrusion of the handrail belt support, and the right one of the pair of support legs does not contact the middle protrusion of the handrail belt support.

According to another exemplary embodiment of the present invention, a support shaft is provided on each of right and left sides of a front end of the revolving chain link, and the rolling wheels are mounted on the support shafts.

According to another exemplary embodiment of the present invention, an inwardly recessed notch is formed at the front end of the rotating chain link; the rear end of the swivel chain link is adapted to be received in a notch in the front end of another swivel chain link and rotatably linked to the front end of the other swivel chain link.

According to another exemplary embodiment of the present invention, the pair of support legs are installed at a position between front and rear ends of the swing chain link.

According to another aspect of the present invention, there is provided an escalator comprising: a handrail belt support; the rotating chain is installed in the handrail support; and a handrail belt supported on the rolling wheels of the revolving chain.

According to an exemplary embodiment of the present invention, the handrail belt support comprises a pair of side walls and a bottom wall, and a middle projection is formed at the bottom wall.

According to another exemplary embodiment of the present invention, a swivel chain link of the swivel chain is mounted to a top wall of a middle projection of the handrail belt support.

According to another exemplary embodiment of the present invention, the rolling wheels and the support legs of the swivel chain are accommodated in a recess between the side walls and the middle projection of the handrail belt support.

In each of the foregoing exemplary embodiments according to the present invention, a pair of support legs are installed on a chain link of a rotating chain, and the pair of support legs can limit left and right extreme offset positions of the rotating chain to prevent the rolling wheel from contacting the handrail support member, so that noise and abrasion problems caused by friction between the rolling wheel and the handrail support member can be effectively prevented, and the service life of the rotating chain can be improved.

Other objects and advantages of the present invention will become apparent from the following description of the invention which refers to the accompanying drawings, and may assist in a comprehensive understanding of the invention.

Drawings

Fig. 1 shows a partial perspective view of a revolving chain of an escalator according to an exemplary embodiment of the present invention;

fig. 2 shows a perspective view of one swivel chain unit of the swivel chain shown in fig. 1, wherein a pair of rolling wheels is not shown;

FIG. 3 shows a cross-sectional view of the swing chain shown in FIG. 1 at a pair of support legs;

fig. 4 shows a section through the revolving chain shown in fig. 1 at a pair of rollers.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention and should not be construed as limiting the invention.

Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form in order to simplify the drawing.

According to one general technical concept of the present invention, there is provided a rotary chain of an escalator, including: a plurality of swing chain units. The plurality of revolving chain units are linked to each other and adapted to be installed in a handrail support of an escalator. Each of the swing chain units includes: a rotating chain link having a front end and a rear end; and a pair of rolling wheels symmetrically installed on both left and right sides of a front end of the swing chain link. Each of the swing chain units further includes a pair of support legs symmetrically installed on left and right sides of the swing chain link; the pair of support legs are adapted to limit the extreme offset position of the swing chain unit by abutting on the middle protrusion of the handrail belt support; when the swing chain unit is deflected to the extreme deflection position, the pair of rolling wheels are not in contact with the handrail support member, so that the pair of rolling wheels can be prevented from being worn by the handrail support member.

Fig. 1 shows a partial perspective view of a revolving chain of an escalator according to an exemplary embodiment of the present invention; fig. 2 shows a perspective view of one swivel chain unit of the swivel chain shown in fig. 1, wherein the pair of rolling wheels 220 is not shown.

As shown in fig. 1 and 2, in the illustrated embodiment, the rotating chain of the escalator mainly includes a plurality of rotating chain units 200. A plurality of swing chain units 200 are linked to each other. The revolving chain is adapted to be installed in a handrail support 100 of an escalator.

As shown in fig. 1 and 2, in the illustrated embodiment, each revolving chain unit 200 mainly includes a revolving chain link 210 and a pair of rolling wheels 220. The articulated chain link 210 has a front end 211 and a rear end 212. A pair of rolling wheels 220 are symmetrically installed on both left and right sides of the front end 211 of the swing chain link 210.

As shown in fig. 1 and 2, in the illustrated embodiment, each swing chain unit 200 further includes a pair of support legs 230. A pair of support legs 230 are symmetrically installed on both left and right sides of the swing chain link 210.

FIG. 3 shows a cross-sectional view of the swing chain shown in FIG. 1 at a pair of support legs 230; fig. 4 shows a cross-section of the swivel chain shown in fig. 1 at a pair of rolling wheels 220.

As shown in fig. 1 to 4, in the illustrated embodiment, a pair of support legs 230 are adapted to limit the extreme offset position of the swing chain unit 200 by abutting on the middle protrusion 130 of the handrail belt support 100.

As shown in fig. 1 to 4, in the illustrated embodiment, when the swing chain unit 200 is biased to the extreme biased position, the pair of rolling wheels 220 are not in contact with the handrail support 100, so that the pair of rolling wheels 220 can be prevented from being worn by the handrail support 100.

As shown in fig. 1 to 4, in the illustrated embodiment, a distance D between the pair of support legs 230 (i.e., a distance between inner side surfaces of the pair of support legs 230) is smaller than a distance D1 between the pair of rolling wheels 220 (i.e., a distance between inner end surfaces of the pair of rolling wheels 220) such that when the swing chain unit 200 is biased to the extreme biased position, one of the pair of support legs 230 is in contact with the middle protrusion 130 of the handrail belt support 100 and the pair of rolling wheels 220 is not in contact with the middle protrusion 130 of the handrail belt support 100.

As shown in fig. 1 to 4, in the illustrated embodiment, a distance D between a pair of support legs 230 is greater than a distance D2 between left and right sides of the middle protrusion 130 of the handrail belt support 100 to allow the swing chain unit 200 to be offset left and right.

As shown in fig. 1 to 4, in the illustrated embodiment, when the swing chain unit 200 is mounted to the handrail support 100, a pair of support legs 230 are located at left and right sides of the middle protrusion 130 of the handrail support 100, and the pair of support legs 230 extend downward to a position lower than the top surface of the middle protrusion 130 of the handrail support 100 so that the support legs 230 can abut on the side surfaces of the middle protrusion 130 of the handrail support 100.

As shown in fig. 1 to 4, in the illustrated embodiment, the aforementioned extreme displacement positions include a left extreme displacement position and a right extreme displacement position. The offset range of the swing chain unit 200 is limited between the left and right extreme offset positions.

As shown in fig. 1 to 4, in the illustrated embodiment, when the swing chain unit 200 is offset to the left extreme offset position, the right one 230 of the pair of support legs 230 abuts on the right side surface of the middle protrusion 130 of the handrail belt support 100, and the left one 230 of the pair of support legs 230 does not contact the middle protrusion 130 of the handrail belt support 100.

As shown in fig. 1 to 4, in the illustrated embodiment, when the swing chain unit 200 is offset to the right extreme offset position, the left one 230 of the pair of support legs 230 abuts on the left side surface of the middle protrusion 130 of the handrail belt support 100, and the right one 230 of the pair of support legs 230 does not contact the middle protrusion 130 of the handrail belt support 100.

As shown in fig. 1 to 4, in the illustrated embodiment, one support shaft 213 is provided on each of the right and left sides of the front end 211 of the rotating chain link 210, and the rolling wheels 220 are mounted on the support shafts 213.

As shown in fig. 1 to 4, in the illustrated embodiment, an inwardly recessed notch 214 is formed at the front end 211 of the rotating chain link 210. The rear end 212 of one swivel chain link 210 is adapted to be received in the notch 214 of the front end 211 of another swivel chain link 210 and rotatably linked to the front end 211 of another swivel chain link 210. In this way, a plurality of swing chain units 200 can be linked to each other.

As shown in fig. 1 to 4, in the illustrated embodiment, a pair of support legs 230 are mounted at a position between the front end 211 and the rear end 212 of the swivel chain link 210.

As shown in fig. 1 to 4, in another embodiment of the present invention, there is also disclosed an escalator including: a handrail belt support 100, the aforementioned revolving chain and a handrail belt (not shown). The swing chain is installed in the handrail support 100. The handrail belt is supported on the rolling wheels 220 of the revolving chain.

As shown in fig. 1 to 4, in the illustrated embodiment, the handrail support 100 includes a pair of side walls 110 and a bottom wall 120, and a middle protrusion 130 is formed at the bottom wall 120.

As shown in fig. 1 to 4, in the illustrated embodiment, the swivel chain links 210 of the swivel chain are mounted to the top wall of the middle protrusion 130 of the handrail belt support 100.

As shown in fig. 1 to 4, in the illustrated embodiment, the rolling wheel 220 and the support leg 230 of the swivel chain are received in a recess between the side wall 110 and the middle protrusion 130 of the handrail belt support 100.

It will be appreciated by those skilled in the art that the embodiments described above are exemplary and can be modified by those skilled in the art, and that the structures described in the various embodiments can be freely combined without conflict in structure or principle.

Although the present invention has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to be illustrative of preferred embodiments of the present invention and should not be construed as limiting the invention.

Although a few embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the appended claims and their equivalents.

It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude a plurality. Furthermore, any reference signs in the claims shall not be construed as limiting the scope of the invention.