CN211470505U

CN211470505U - Tensioning device of handrail belt driving chain, handrail belt driving device and escalator

Info

Publication number: CN211470505U
Application number: CN201921986986.9U
Authority: CN
Inventors: 周成; 董亚军; 楼文明
Original assignee: Kone Elevators Co Ltd; Kone Corp
Current assignee: Kone Elevators Co Ltd; Kone Corp
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-09-11
Anticipated expiration: 2029-11-15

Abstract

The utility model relates to a overspeed device tensioner, handrail area drive arrangement and automatic escalator of handrail area drive chain of automatic escalator. The tensioning device comprises only one tensioning sprocket, a fixed plate and a movable plate, wherein the fixed plate is mounted on a tap column of the escalator, the movable plate is slidably connected to the fixed plate, the tensioning sprocket is rotatably arranged on the movable plate, and the tensioning sprocket can reciprocate along with the movable plate in different first and second directions, so that the handrail driving chain is tensioned.

Description

Tensioning device of handrail belt driving chain, handrail belt driving device and escalator

Technical Field

The utility model relates to a overspeed device tensioner, handrail area drive arrangement and automatic escalator of handrail area drive chain of automatic escalator.

Background

In the running process of the escalator, a handrail belt driving chain of the escalator bears a large acting force, and a large friction force exists between the handrail belt driving chain wheel and a handrail belt tensioning chain wheel, so that the handrail belt driving chain wheel and the handrail belt tensioning chain wheel can become loose due to serious abrasion after long-time work, and further transmission can not be achieved. Generally, a tensioning mechanism is installed in an escalator for adjusting a handrail driving chain to be tensioned after it becomes slack. Conventional tensioning mechanisms for escalators are generally complex in structure and have many parts, thereby requiring more installation space, being costly and not conducive to maintenance.

Generally, the existing tensioning structure has at least two sprockets to adjust the handrail belt drive chain. As shown in the right partial enlarged view of fig. 1, the conventional tension mechanism for a handrail belt driving chain of an escalator includes two

tension sprockets

101 and 102. As shown in the left schematic view of fig. 1, the handrail drive chain comprises a first drive chain 103 that is sleeved over the handrail drive sprocket and the first tension sprocket 101, and a second drive chain 104 that is sleeved over the main drive sprocket and the first tension sprocket 101. After the escalator is operated for a long time to cause the handrail drive chain to be loosened, the first drive chain 103 is tensioned by adjusting the position of the tension sprocket 101, and the second drive chain 104 is tensioned by adjusting the position of the tension sprocket 102. Therefore, the tensioner is complicated in structure, occupies a large installation space, and is complicated to operate.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic staircase handrail area drive chain's overspeed device tensioner, handrail area drive arrangement and automatic staircase, this overspeed device tensioner only have a tension sprocket, therefore simple structure, the volume is less, convenient operation.

In order to achieve the purpose, the utility model provides an automatic staircase handrail area drive chain's overspeed device tensioner. The tensioning device comprises only one tensioning sprocket, a fixed plate and a movable plate, wherein the fixed plate is mounted on a tap column of the escalator, the movable plate is slidably connected to the fixed plate, the tensioning sprocket is rotatably arranged on the movable plate, and the tensioning sprocket can reciprocate along with the movable plate in different first and second directions, so that the handrail driving chain is tensioned.

In a preferred embodiment of the present invention, the fixed plate includes at least one first guide groove extending in the first direction, the movable plate includes at least two second guide grooves extending in the second direction, and the movable plate is slidably connected to the fixed plate by a plurality of pins passing through each of the first and second guide grooves.

In a preferred embodiment of the present invention, the tensioning device comprises two grooves disposed at the edge of the movable plate, and two screws disposed in the two grooves respectively, wherein the two screws are used for driving the movable plate to reciprocate in the first direction and the second direction respectively, so as to tension the handrail driving chain.

In a preferred embodiment of the present invention, the movable plate has a rectangular shape, and the two grooves are provided on the middle portions of the adjacent two edges of the movable plate.

In a preferred embodiment of the invention, the first direction is perpendicular to the second direction.

In a preferred embodiment of the present invention, the fixing plate is mounted on the faucet pillar of the escalator by welding or bolts.

The utility model also provides an automatic handrail area drive arrangement of staircase, it sets up the main drive sprocket in the main drive epaxial hand strap driving sprocket and hand strap friction pulley including setting up in hand strap area epaxial hand strap driving sprocket to and the hand strap driving chain of cover on this hand strap driving sprocket and this main drive sprocket, and this hand strap driving arrangement include as above overspeed device tensioner.

In a preferred embodiment of the present invention, the handrail driving chain comprises a first chain sleeved on the handrail driving sprocket and the tension sprocket, and a second chain sleeved on the main driving sprocket and the tension sprocket, and the first chain and the second chain are tensioned by the reciprocating motion of the tension sprocket in the first direction and the second direction.

The utility model also provides an automatic escalator, this automatic escalator contain the handrail area and as above handrail area drive arrangement.

Drawings

The above and other features and advantages of the present invention will become more apparent from the following detailed description of exemplary embodiments thereof, taken in conjunction with the accompanying drawings, which are for illustrative purposes only and do not limit the scope of the invention in any way:

fig. 1 shows a handrail drive device of an escalator according to the prior art, comprising two tensioning sprockets;

fig. 2 shows a handrail drive device for an escalator according to the invention, comprising a tensioning device according to the invention;

fig. 3 is a schematic view of a movable plate and a tension sprocket in a tensioning device according to the present invention;

figure 4 schematically shows a movable plate in a tensioning device according to the invention; and

fig. 5 schematically shows a fixing plate in a tensioning device according to the invention.

Detailed Description

The foregoing and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the embodiments with reference to the accompanying drawings. It is to be noted that, in the drawings, the same reference numerals are given to constituent parts having substantially the same or similar structures and functions, and repeated description thereof will be omitted. The terms "first direction", "second direction", etc. herein are described with respect to the drawings of the present invention, unless otherwise specified. The description of "first" and its variants is merely for distinguishing between the parts and does not limit the scope of the invention, which may be written as "second" or the like, without departing from the scope of the invention.

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 2 shows a perspective view of a handrail driving device 200 for an escalator according to the present invention. This handrail drive device 200 comprises a tensioning device 201 according to the present invention for a handrail drive chain of an escalator.

As shown in the left schematic view of fig. 2, the handrail driving device 200 includes a handrail driving sprocket 2 and a handrail friction wheel 3 provided on a handrail shaft 1, a main driving sprocket 5 provided on a main driving shaft 4, and a handrail driving chain fitted over the handrail driving sprocket 2 and the main driving sprocket 5. When the escalator operates, the rotation of the main driving chain wheel 5 on the main driving shaft 4 drives the handrail driving chain wheel 2 to rotate through the handrail driving chain, the handrail driving chain wheel 2 further drives the coaxial handrail friction wheel 3 to rotate, and the handrail friction wheel 3 then drives the handrail arranged on the handrail to move according to the set speed.

As shown in the enlarged view on the right side in fig. 2, the tensioner 201 includes exactly one tensioner sprocket 6, the fixed plate 7, and the movable plate 8. As shown schematically on the left side in fig. 2, the fixing plate 7 is mounted on the tap upright 9 of the escalator, for example by welding or bolting. As shown in the right enlarged view of fig. 2, the movable plate 8 is slidably connected to the fixed plate 7, and the tension sprocket 6 is rotatably provided on the movable plate 8 and can be rotated by the main driving sprocket 5. As shown in fig. 4, the tension sprocket 6 is fixed in the hole 17 of the movable plate by a rotating shaft.

The tension sprocket 6 is capable of reciprocating with the movable plate 8 in different first and second directions, thereby tensioning the handrail drive chain. As indicated by the black arrow in the right-hand view in fig. 2, the first direction is a horizontal left-hand direction and the second direction is a vertical upward direction. The first direction and the second direction in the example shown in fig. 2 are perpendicular to each other. However, in other examples of the invention, the first and second directions may not be perpendicular to each other, but only at a non-zero angle, so that the handrail drive chain can be adjusted in different directions to be tensioned.

As shown in the left schematic view in fig. 2, the handrail drive chain comprises a first chain 10 that is sleeved over the handrail drive sprocket 2 and the tension sprocket 6, and a second chain 11 that is sleeved over the main drive sprocket 5 and the tension sprocket 6. In other examples of the present invention, the handrail driving chain may include only one chain, which is sleeved on the handrail driving sprocket 2 and the main driving sprocket 5 and pressed against the tension sprocket 6 of the tension device 201, and the chain is adjusted to be tensioned by the movement of the tension device.

The fixed and movable plates of the tensioner are further described below.

As shown in fig. 5, the fixing plate 7 includes four first guide grooves 12 extending in the first direction. The four first guide grooves 12 may have the same length in the first direction and be symmetrically distributed on the fixing plate. By the above four first guide grooves, the movable plate can be smoothly reciprocated in the first direction as indicated by the double-headed arrow in fig. 5. For example, the upper or lower two first guide grooves 12 may be merged into one guide groove. In other examples of the present invention, the fixing plate may have one, two or three first guide grooves.

As shown in fig. 3 and 4, the movable plate 8 includes two second guide grooves 13 extending in the second direction. The second guide grooves 13 may have the same length in the second direction and be symmetrically distributed at both sides of the movable plate. By the above two second guide grooves, the movable plate can be smoothly reciprocated in the second direction as indicated by the double-headed arrow in fig. 4. In other examples of the present invention, the movable plate may have three or more second guide grooves 13.

As shown in fig. 2, the movable plate 8 is slidably coupled to the fixed plate 7 by four pins 14 passing through each of the first guide groove 12 and the second guide groove 13 so as to be slidable back and forth on the fixed plate in the first direction and/or the second direction. In other examples of the present invention, the number of pins may be two, three, etc. depending on the number of guide grooves on the fixed plate and the movable plate.

As shown in fig. 3, the movable plate has, for example, a rectangular shape, and the tensioning means includes two grooves 15 provided on the middle portions of the adjacent two edges of the movable plate, and two screws 16 respectively provided in the two grooves. The grooves on the short side of the movable plate can be seen in fig. 3, and the grooves on the long side of the movable plate are arranged on the back of the plate or inside the plate and are thus hidden. After the handrail drive chain is slack, the worker may use the two screws to drive (e.g., pull or push) the movable plate 8 to reciprocate in the first and second directions, respectively, to tension the handrail drive chain.

The utility model discloses an automatic escalator contains handrail area and the above handrail area drive arrangement.

The utility model discloses a overspeed device tensioner, handrail area drive arrangement and automatic escalator only have a tension sprocket, therefore simple structure, volume are less, convenient operation and efficiency are higher.

The technical features disclosed above are not limited to the combinations with other features disclosed, and other combinations between the technical features can be performed by those skilled in the art according to the purpose of the invention to achieve the aim of the invention.

Claims

1. A tensioning device of a handrail driving chain of an escalator is characterized by comprising only one tensioning chain wheel, a fixed plate and a movable plate, wherein the fixed plate is installed on a tap upright post of the escalator, the movable plate is slidably connected to the fixed plate, the tensioning chain wheel is rotatably arranged on the movable plate, and the tensioning chain wheel can reciprocate along with the movable plate in different first and second directions so as to tension the handrail driving chain.

2. The tensioner of claim 1 wherein the fixed plate includes at least one first guide slot extending in a first direction, the movable plate includes at least two second guide slots extending in a second direction, and the movable plate is slidably coupled to the fixed plate by a plurality of pins passing through each of the first and second guide slots.

3. The tensioner as in claim 1, wherein the tensioner comprises two grooves disposed on an edge of the movable plate and two screws disposed in the two grooves, wherein the two screws are used to drive the movable plate to reciprocate in the first direction and the second direction, respectively, to tension the handrail drive chain.

4. The tensioner as in claim 3, wherein the movable plate has a rectangular shape, the two grooves being disposed on a middle portion of adjacent two edges of the movable plate.

5. The tensioner as in claim 4, wherein the first direction is perpendicular to the second direction.

6. The tensioner as in claim 1, wherein the fixing plate is mounted on the escalator faucet post by welding or bolting.

7. A handrail driving device of an escalator, comprising a handrail driving sprocket and a handrail friction wheel provided on a handrail shaft, a main driving sprocket provided on a main driving shaft, and a handrail driving chain fitted over the handrail driving sprocket and the main driving sprocket, characterized in that the handrail driving device comprises a tensioning device as claimed in any one of claims 1 to 6.

8. The handrail drive apparatus of claim 7, wherein the handrail drive chain comprises a first chain looped over the handrail drive sprocket and the tension sprocket, and a second chain looped over the main drive sprocket and the tension sprocket, the reciprocating movement of the tension sprocket in the first direction and the second direction causing the first chain and the second chain to be tensioned.

9. An escalator, characterized in that it comprises a handrail and a handrail drive device according to any one of claims 7-8.