WO2020238431A1

WO2020238431A1 - Driving device suitable for hand strap at lower end of escalator and escalator

Info

Publication number: WO2020238431A1
Application number: PCT/CN2020/083938
Authority: WO
Inventors: 孙世昌; 陆晓兰; 郝芷琦; 周斌
Original assignee: 苏州江南嘉捷电梯有限公司
Priority date: 2019-05-27
Filing date: 2020-04-09
Publication date: 2020-12-03
Also published as: CN110217681A

Abstract

Provided are a driving device (2) suitable for a hand strap (1) at the lower end of escalator and an escalator, wherein the driving device (2) comprises a transition sprocket (11), a minor sprocket (14) arranged on a step sprocket (15) and a drive sprocket (9) arranged on a rotating wheel (16) at the end of a handrail, the transition sprocket (11), the minor sprocket (14) and the drive sprocket (9) are positioned on the same side of the escalator, a first drive chain (10) is arranged between the transition sprocket (11) and the drive sprocket (9), a second drive chain (12) is arranged between the transition sprocket (11) and the minor sprocket (14). The structural design of the driving device (2) is reasonable, and does not require extra power source, the driving device (2) is powered by the rotating step sprocket (15), the hand strap (1) has good synchronism and low fault rate.

Description

Suitable for driving device of lower handrail belt of escalator and escalator

Technical field

The patent relates to the technical field of escalators, in particular to a driving device suitable for the handrail at the lower end of the escalator and an escalator including the driving device.

Background technique

With economic development, higher escalators are needed, and as the height of escalators increases, the force to drive escalator handrails also needs to be greater and greater. At present, the mainstream handrail drives on the market are divided into three types, one One is ordinary friction wheel drive, one is multi-roller linear drive, and the other is the upper and lower end armrest steering end drive, also called end drive. Among them, the linear drive with more rolling wheels at the end drive has low cost, simple structure and easy maintenance. Compared with the friction wheel drive, the driving force is larger, and it can better meet the needs of escalators with large lifting heights.

There are two ways to realize the end drive in the prior art. First, the upper end handrail steering end drive, also called the upper end drive, is suitable for medium and small lifting heights; second, with the continuous increase of the lifting height, the upper end drive gradually cannot meet the requirements. The driving force of the handrail belt needs to be driven at the lower end of the armrest under the premise of driving at the upper end. For the second method, the traditional solution is to use a small motor to directly drive the lower steering wheel through a chain to increase the driving force of the handrail belt. However, generally due to space constraints, the motors are relatively small, and the large load generated by the handrails can easily cause the motor to overload and cause a high failure rate.

Summary of the invention

In view of this, in order to solve the problems of the prior art, the present invention provides a compact, safe and reliable driving device suitable for the lower end handrail belt of an escalator.

In order to achieve the above objective, the present invention adopts the following technical solutions:

A driving device suitable for a handrail belt at the lower end of an escalator, comprising a transition sprocket, a small sprocket arranged on a step sprocket, a driving sprocket arranged on a turning wheel at the end of the handrail, the transition sprocket, a small sprocket The sprocket and the drive sprocket are located on the same side of the escalator, a first drive chain is arranged between the transition sprocket and the drive sprocket, and a second drive chain is arranged between the transition sprocket and the small sprocket. By setting the transition sprocket, small sprocket, drive sprocket and the first drive chain and the second drive chain, when the steps of the escalator are moving, the step sprocket of the escalator rotates, and the small sprocket rotates synchronously, passing the second drive The chain drives the transition sprocket to rotate, and the transition sprocket drives the driving sprocket to rotate through the first drive chain. Because the driving sprocket and the end turning wheel of the armrest rotate synchronously, the handrail belt is finally driven to move. Through the above-mentioned structural arrangement, not only the structure is more compact, the space is small, but also the power is provided by the rotating step sprocket, no additional power source is needed, and the use is safer and more reliable, the handrail belt has good synchronization and low failure rate.

Preferably, a first gear corresponding to the drive sprocket is provided on the transition sprocket, and the first drive chain is provided between the first gear and the drive sprocket; the transition sprocket is provided with Corresponding to the second gear of the small sprocket, the second drive chain is arranged between the second gear and the small sprocket. Two rows of gears are arranged on the transition sprocket, so that the small sprocket can drive the driving sprocket to rotate through the transition sprocket. And the second gear is closer to the steps of the escalator than the first gear, that is, the second gear is on the inside and the first gear is on the outside.

More preferably, the driving device further includes an automatic chain tensioning device, the automatic chain tensioning device includes a tensioning sprocket for tensioning the second drive chain and a tensioning sprocket for tensioning the tensioning chain The wheel is mounted on the mounting mechanism on the truss. Since the position of the step sprocket is not fixed when the escalator is running, that is, the relative position between the small sprocket and the transition sprocket is not fixed, the second drive chain may appear slack, and the chain is automatically tensioned. The device can prevent the chain and sprocket from gearing off and tooth jumping due to the front and back movement of the tensioning trolley, making the escalator safer and more reliable.

Further preferably, the installation mechanism includes a tension sprocket bracket installed on the truss and an installation plate installed on the tension sprocket bracket, the tension sprocket is installed on the installation plate, the The tension sprocket bracket includes a horizontal plate fixed on the truss and a vertical plate arranged perpendicular to the horizontal plate. The mounting plate can slide up and down along the vertical plate to adjust the position of the tensioning sprocket so as to tension the second drive chain.

Still preferably, the installation mechanism further includes an adjustment mechanism for driving the installation plate to move up and down along the vertical plate, and the adjustment mechanism includes a fixing plate arranged on the installation plate and fixed on the fixing plate. An adjustment rod on the board, the adjustment rod is provided with an elastic member, the upper end of the elastic member acts on the lower surface of the horizontal plate, and the lower end of the elastic member acts on the elastic member fixed on the adjustment rod The base, the base of the elastic member is fixed on the adjusting rod through a nut, and a hole for the top of the adjusting rod is opened on the horizontal plate. The elastic member and the adjusting rod can drive the mounting plate to move up and down, thereby driving the tension sprocket to move up and down. In addition, the position of the base of the elastic member can be changed by adjusting the position of the nut, thereby adjusting the elastic force of the elastic member and changing the tension force.

Also preferably, the fixing plate is provided with a threaded hole, the adjusting rod is a threaded rod, and the threaded rod is fixed on the fixing plate through the threaded hole. The adjusting rod is more convenient to install by using a threaded rod, and the adjustment of the nut is also more convenient.

Still preferably, the mounting plate is fixed to the vertical plate by a fastener, and the mounting plate is provided with a waist hole extending in the vertical direction corresponding to the fastener. The setting of the waist round hole can limit the up and down movement of the mounting plate.

Preferably, the mounting plate is further provided with an adjustment hole for conveniently adjusting the position of the base of the elastic element, that is, through the adjustment hole, the nut can be easily adjusted to adjust the position of the base of the elastic element.

Preferably, the tension sprocket is arranged on a side of the second drive chain close to the drive sprocket.

More preferably, the small sprocket, the second drive chain, the tension sprocket and the second gear are located on the same vertical plane; the drive sprocket, the first drive chain and the first gear are located on the same vertical plane .

The present invention also provides an escalator including the above-mentioned driving device suitable for the lower end handrail belt of the escalator.

Compared with the prior art, the advantages of the present invention are: the driving device of the present invention suitable for the lower end handrail belt of the escalator has a reasonable structure design, a small space occupation, no additional power source, and a rotating step chain Wheels provide power, safe and reliable to use, handrail belt synchronization is good, and the failure rate is low.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative work.

Figure 1 is a perspective view of a driving device suitable for the lower handrail belt of an escalator in a preferred embodiment of the present invention after installation;

Figure 2 is a partial perspective view of a driving device suitable for a handrail belt at the lower end of an escalator in a preferred embodiment of the present invention;

Figure 3 is a perspective view of the end turning wheel and the drive sprocket in the preferred embodiment of the present invention after installation;

Figure 4 is a perspective view of the step sprocket and the small sprocket in the preferred embodiment of the present invention after installation;

Figure 5 is a perspective view of the transition sprocket installed on the truss in the preferred embodiment of the present invention;

Figure 6 is a perspective view of the installation mechanism in the preferred embodiment of the present invention;

Figure 7 is a perspective view of a mounting board in a preferred embodiment of the present invention;

Among them: handrail-1, lower handrail driving device-2, truss-3, step-4, step chain-5, tension trolley-6, support angle-7, automatic chain tensioner-8, drive sprocket- 9. The first drive chain-10, transition sprocket-11, second drive chain-12, tension sprocket-13, small sprocket-14, step sprocket-15, end turning wheel-16, One bolt assembly-17, second bolt assembly-18, third bolt assembly-19, nut-20, tension sprocket bracket-21, horizontal plate-211, vertical plate-212, fastener-22, adjustment Rod-23, elastic part-24, elastic part base-25, mounting plate-26, fixing plate-261, tensioning sprocket mounting hole-262, waist round hole-263, adjusting hole-264, threaded hole-265, The first gear -271, the second gear -272.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described implementation The examples are only a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

1-7, a driving device 2 suitable for the lower handrail belt of an escalator in this embodiment includes a transition sprocket 11, a small sprocket 14 fixed on the step sprocket 15 by a third bolt assembly 19, and The second bolt assembly 18 is fixed to the drive sprocket 9 on the turning wheel 16 at the end of the armrest. The transition sprocket 11, the small sprocket 14, and the drive sprocket 9 are located on the same side of the escalator. The transition sprocket 11 and the drive sprocket 9 A first drive chain 10 is arranged between 9, a second drive chain 12 is arranged between the transition sprocket 11 and the small sprocket 14, and an automatic chain tensioning device 8 is also arranged on the second drive chain 12. The transition sprocket 11 is installed on the truss 3 through the supporting angle steel 7 and the first bolt assembly 17.

In this embodiment, the transition sprocket 11 is provided with a first gear 271 corresponding to the drive sprocket 9. The first drive chain 10 is provided between the first gear 271 and the drive sprocket 9; the transition sprocket 11 is provided with a corresponding The second gear 272 of the small sprocket 14, the second drive chain 12 is arranged between the second gear 272 and the small sprocket 14, the small sprocket 14, the second drive chain 12, the tension sprocket 13, and the second gear 272 They are located on the same vertical surface; the drive sprocket 9, the first drive chain 10 and the first gear 271 are located on the same vertical surface. The transition sprocket 11 is provided with two rows of gears, so that the small sprocket 14 can drive the driving sprocket 9 to rotate through the transition sprocket 11. In addition, the second gear 272 is closer to the step of the escalator than the first gear 271, that is, the second gear 272 is on the inside and the first gear 271 is on the outside.

By setting the transition sprocket 11, the small sprocket 14, the drive sprocket 9, and the first drive chain 10 and the second drive chain 12, when the step 4 of the escalator moves, the step sprocket 15 of the escalator rotates, and the small sprocket 14 Synchronous rotation, the second drive chain 12 drives the transition sprocket 11 to rotate, the transition sprocket 11 drives the drive sprocket 9 to rotate through the first drive chain 10, because the drive sprocket 9 rotates synchronously with the end turning wheel 16 of the armrest , And finally drive the handrail 1 to move. Through the above-mentioned structural arrangement, not only the structure is more compact, the space is small, and the power is provided by the rotating step sprocket 15, no additional power source is required, and the use is safer and more reliable. The handrail 1 has good synchronization and low failure rate. .

The automatic chain tensioning device 8 in this embodiment includes a tensioning sprocket 13 for tensioning the second drive chain 12 and an installation mechanism for installing the tensioning sprocket 13 on the truss 3. The tensioning chain The wheel 13 is arranged on the side of the second drive chain 12 close to the drive sprocket 9. Since the position of the step sprocket 15 is not fixed when the escalator is running, that is, the relative position between the small sprocket 14 and the transition sprocket 11 is not fixed, the second drive chain 12 may appear slack. The automatic chain tensioning device 8 can prevent problems such as the chain and the sprocket from being toothed off and the tooth skipping due to the front and back movement of the tensioning trolley 6, so that the escalator is safer and more reliable.

As shown in Figures 6-7, the installation mechanism includes a tension sprocket bracket 21 installed on the truss 3, a mounting plate 26 installed on the tension sprocket bracket 21, and a mounting plate used to drive the mounting plate 26 up and down along the vertical plate 212. A movable adjustment mechanism. The mounting plate 26 is provided with a tension sprocket mounting hole 262 for mounting the tension sprocket 13. The tension sprocket bracket 21 includes a horizontal plate 211 fixed on the truss 3 and a vertical plate 211. The vertical plate 212.

The adjustment mechanism includes a fixing plate 261 arranged on the mounting plate 26, an adjusting rod 23 fixed on the fixing plate 261, and an elastic member 24 is arranged on the adjusting rod 23. The upper end of the elastic member 24 acts on the lower surface of the horizontal plate 211. The lower end of the member 24 acts on an elastic member base 25 fixed on the adjusting rod 23. The elastic member base 25 is fixed on the adjusting rod 23 by a nut 20. The horizontal plate 211 is also provided with a hole for the top of the adjusting rod 23 to penetrate. The elastic member 24 and the adjusting rod 23 can drive the mounting plate 26 to move up and down, thereby driving the tensioning sprocket 13 to move up and down, so as to tension the second drive chain 12. And the position of the elastic member base 25 can be changed by adjusting the position of the nut 20, thereby adjusting the elastic force of the elastic member 24 and changing the tension force.

In this embodiment, the fixing plate 261 is provided with a threaded hole 265, the adjusting rod 23 is a threaded rod, and the threaded rod is fixed on the fixing plate 261 through the threaded hole 265. The adjusting rod 23 is more convenient to install with a threaded rod, and the adjustment of the nut 20 Also more convenient. The mounting plate 26 is fixed on the vertical plate 212 by a fastener 22, and the mounting plate 26 is corresponding to the fastener 22 with a waist hole 263 extending in the vertical direction. The setting of the waist circle hole 263 can limit the up and down movement of the mounting plate 26. The mounting plate 26 is also provided with an adjustment hole 264 for adjusting the position of the elastic member base 25, that is, through the adjustment hole 264, the nut 20 can be easily adjusted to adjust the position of the elastic member base 25. In this embodiment, the fastener 22 connecting the mounting plate 26 and the vertical plate 212 is a half-threaded bolt assembly, the elastic member 24 is a compression spring, and the elastic member base 25 is a spring seat.

The following briefly describes the working process of the driving device for the handrail belt at the lower end of the escalator in this embodiment:

1-7, the step sprocket 15 is fixed on the tension trolley 6. When the escalator is running, the step 4 rotates, and the step sprocket 15 rotates under the drive of the step chain 5, and is fixed on the step by the third bolt assembly 19 The small sprocket 14 on the sprocket 15 rotates synchronously. The small sprocket 14 drives the transition sprocket 11 to rotate through the second drive chain 12, and the transition sprocket 11 is fixed on the truss 3 through the support angle 7 and the first bolt assembly 17. The sprocket 11 is provided with two rows of teeth, a first gear 271 and a second gear 272, which mesh with the first drive chain 10 and the second drive chain 12, respectively. The transition sprocket 11 drives the drive sprocket through the first drive chain 10 9 rotates, the driving sprocket 9 is fixed on the end turning wheel 16 through the second bolt assembly 18, thereby driving the end turning wheel 16 to rotate to drag the handrail belt 1 to move.

Because the position of the escalator tensioning trolley 6 is not fixed at different lifting heights, the positions of the step sprocket 15 and the small sprocket 14 are also not fixed. To ensure that the second drive chain 12 can interact with the small sprocket 14 and the transition sprocket 11 For proper engagement, the length of the second drive chain 12 needs to be long enough, and at the same time, an automatic chain tensioning device 8 is provided at the second drive chain 12. The automatic chain tensioning device 8 is fixed on the truss 3, and the automatic chain tensioning device 8 includes a tensioner. The tension sprocket 13 is fixed on the tension sprocket mounting hole 262 of the mounting plate 26. The mounting plate 26 is provided with a vertical waist adjustment hole 263 and an adjustment hole 264 for the adjustment nut 20. The plate 26 is connected to the tensioning sprocket bracket 21 by a half-threaded bolt assembly. After the half-threaded bolt assembly is tightened, the mounting plate 26 can slide freely on the vertical plate 212 of the tensioning sprocket bracket 21. The tensioning sprocket 13 and the tensioning sprocket A half-threaded threaded rod 23 is arranged between the tightening sprocket bracket 21. The threaded end of the half-threaded threaded rod 23 is fixed in the threaded hole 265 of the fixing plate 261 on the mounting plate 26, and the unthreaded end is horizontal from the upper end of the tensioning bracket 21. The plate 211 passes through the circular hole, and plays a guiding role during the up and down movement of the mounting plate 26; the half-threaded threaded rod 23 is provided with a spring seat 25 and a compression spring 24 with greater elasticity and compression. The spring seat and A nut 20 is provided between the half-threaded threaded rods. The compression spring 24 can adjust the compression and elasticity by rotating the nut 20 to ensure that the second drive chain 12 is always in tension when the tensioning trolley 6 moves forward and backward. The wheel 14 and the transition sprocket 11 are correctly meshed to avoid problems such as the chain and the sprocket being toothed or skipped.

This embodiment also provides an escalator, and the lower end of the escalator includes the driving device suitable for the lower handrail belt as described above.

The driving device of the present invention is suitable for the handrail belt at the lower end of the escalator. The structure is reasonable, the space is small, no additional power source is needed, and the rotating step sprocket provides power. It is safe and reliable in use and has good handrail synchronization. , The failure rate is low. By setting the automatic chain tensioning device, it can prevent the chain and sprocket from gearing off and jumping teeth caused by the movement of the tensioning trolley, so that the escalator runs safer and more reliable.

The above-mentioned embodiments are only to illustrate the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement them accordingly, and cannot limit the scope of protection of the present invention. The equivalent changes or modifications made by the spirit essence should all be covered within the protection scope of the present invention.

Claims

A driving device suitable for a handrail belt at the lower end of an escalator, characterized in that it comprises a transition sprocket, a small sprocket arranged on the step sprocket, and a driving sprocket arranged on the revolving wheel at the end of the handrail. The sprocket, the small sprocket, and the drive sprocket are located on the same side of the escalator. A first drive chain is provided between the transition sprocket and the drive sprocket, and a second drive chain is provided between the transition sprocket and the small sprocket. Drive chain; the transition sprocket is provided with a first gear corresponding to the drive sprocket, the first drive chain is provided between the first gear and the drive sprocket; the transition sprocket is provided with Corresponding to the second gear of the small sprocket, the second drive chain is arranged between the second gear and the small sprocket; the drive device further includes an automatic chain tensioning device, the automatic chain tensioning device It includes a tension sprocket for tensioning the second drive chain and an installation mechanism for installing the tension sprocket on the truss; the installation mechanism includes a tension sprocket installed on the truss A bracket and a mounting plate mounted on the tension sprocket bracket, the tension sprocket is mounted on the mounting plate, and the tension sprocket bracket includes a horizontal plate fixed on the truss and is connected to the horizontal The installation mechanism also includes an adjustment mechanism for driving the installation plate to move up and down along the vertical plate, and the adjustment mechanism includes a fixing plate and a fixing plate arranged on the installation plate. An adjustment rod on the fixed plate, the adjustment rod is provided with an elastic member, the upper end of the elastic member acts on the lower surface of the horizontal plate, and the lower end of the elastic member acts on the adjustment rod fixed on the adjustment rod The fixing plate is provided with a threaded hole, the adjusting rod is a threaded rod, and the threaded rod is fixed to the fixing plate through the threaded hole; the elastic part base is fixed on the fixing plate by a nut On the threaded rod; the mounting plate is fixed on the vertical plate by fasteners, the mounting plate is corresponding to the fasteners with a waist hole extending in the vertical direction; the waist hole Distributed on both sides of the fixed plate; the fixed plate is located in the middle of the side of the mounting plate away from the tension sprocket, and the vertical plate is provided with a moving groove for the fixed plate to move up and down The mounting plate is provided with a tensioning sprocket mounting hole, the tensioning sprocket mounting hole is located below the fixed plate; the tensioning sprocket is arranged on the second drive chain close to the drive chain One side of the wheel; the small sprocket, the second drive chain, the tension sprocket and the second gear are located on the same vertical plane; the drive sprocket, the first drive chain and the first gear are located on the same vertical plane on.
A driving device suitable for a handrail belt at the lower end of an escalator, characterized in that it comprises a transition sprocket, a small sprocket arranged on the step sprocket, and a driving sprocket arranged on the revolving wheel at the end of the handrail. The sprocket, the small sprocket, and the drive sprocket are located on the same side of the escalator. A first drive chain is provided between the transition sprocket and the drive sprocket, and a second drive chain is provided between the transition sprocket and the small sprocket. Drive chain.
The driving device suitable for the handrail belt at the lower end of an escalator according to claim 2, wherein a first gear corresponding to the driving sprocket is provided on the transition sprocket, and the first driving chain is provided with Between the first gear and the drive sprocket; the transition sprocket is provided with a second gear corresponding to the small sprocket, and the second drive chain is provided between the second gear and the small sprocket between.
According to claim 3, a driving device suitable for a handrail belt at the lower end of an escalator, wherein the driving device further comprises an automatic chain tensioning device, and the automatic chain tensioning device includes A tensioning sprocket for tensioning the two drive chains and an installation mechanism for installing the tensioning sprocket on the truss.
The driving device suitable for the handrail belt at the lower end of an escalator according to claim 4, wherein the installation mechanism comprises a tension sprocket bracket installed on a truss and a tension sprocket bracket installed on the tension sprocket bracket The tensioning sprocket is installed on the mounting plate, and the tensioning sprocket bracket includes a horizontal plate fixed on the truss and a vertical plate arranged perpendicular to the horizontal plate.
The driving device suitable for the handrail belt at the lower end of an escalator according to claim 5, wherein the installation mechanism further comprises an adjustment mechanism for driving the installation plate to move up and down along the vertical plate, so The adjustment mechanism includes a fixing plate arranged on the mounting plate, an adjusting rod fixed on the fixing plate, an elastic piece is arranged on the adjusting rod, and the upper end of the elastic piece acts on the lower part of the horizontal plate. On the surface, the lower end of the elastic member acts on the base of the elastic member fixed on the adjusting rod.
The driving device suitable for the handrail belt at the lower end of an escalator according to claim 6, wherein the fixing plate is provided with a threaded hole, the adjusting rod is a threaded rod, and the threaded rod passes through the thread The hole is fixed on the fixing plate.
The driving device suitable for the handrail belt at the lower end of an escalator according to claim 7, wherein the elastic member base is fixed on the threaded rod by a nut.
The driving device suitable for the handrail belt at the lower end of an escalator according to claim 5, wherein the mounting plate is fixed to the vertical plate by a fastener, and the mounting plate corresponds to the fastening The piece is provided with a round hole extending in the vertical direction.
A driving device suitable for a handrail belt at the lower end of an escalator according to claim 9, wherein the waist round holes are distributed on both sides of the fixing plate.
The driving device suitable for the handrail belt at the lower end of an escalator according to claim 6, wherein the fixing plate is located in the middle position of the mounting plate away from the tension sprocket, and the vertical A moving groove for the fixed plate to move up and down is opened in the middle of the plate.
The driving device suitable for the handrail belt at the lower end of an escalator according to claim 6, wherein the mounting plate is provided with a tension sprocket mounting hole, and the tension sprocket mounting hole is located in the fixed Below the board.
A driving device suitable for a handrail belt at the lower end of an escalator according to claim 4, wherein the tension sprocket is arranged on a side of the second drive chain close to the drive sprocket.
A driving device suitable for a handrail belt at the lower end of an escalator according to claim 13, wherein the small sprocket, the second drive chain, the tension sprocket and the second gear are located on the same vertical plane; The driving sprocket, the first driving chain and the first gear are located on the same vertical plane.
An escalator, characterized by comprising the driving device suitable for the lower end handrail belt of the escalator according to any one of claims 1-14.