CN117842822A - Step chain with unloading function and passenger conveying device thereof - Google Patents
Step chain with unloading function and passenger conveying device thereof Download PDFInfo
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- CN117842822A CN117842822A CN202410169403.2A CN202410169403A CN117842822A CN 117842822 A CN117842822 A CN 117842822A CN 202410169403 A CN202410169403 A CN 202410169403A CN 117842822 A CN117842822 A CN 117842822A
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- unloading
- step chain
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- 238000003825 pressing Methods 0.000 claims description 9
- 239000002861 polymer material Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000007704 transition Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000000034 method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- Escalators And Moving Walkways (AREA)
Abstract
The invention discloses a step chain with unloading function, which is formed by connecting and encircling a plurality of chain links, wherein the chain links are connected through revolute pairs, and each revolute pair is provided with a step chain roller; at least one unloading wheel is rotatably arranged on each chain link, and the unloading wheels are positioned between the front step chain roller and the rear step chain roller which are adjacent; at the main rail inclined section of the passenger conveyor, the step chain roller is in contact with the main rail, and the unloading wheel is not in contact with the main rail; at a curved section on the main rail of the passenger conveyor, an unloading wheel is in contact with the main rail, and at least one of the step chain rollers adjacent to the unloading wheel in front of and behind the unloading wheel is not in contact with the main rail. The invention has simple structure and does not need to add devices such as an independent unloading guide rail and the like.
Description
Technical Field
The invention relates to the technical field of passenger conveying devices, in particular to a step chain with an unloading function and a passenger conveying device thereof.
Background
Escalators and moving walkways are known as passenger conveyors. In passenger conveyors, the step chain rollers at each step bear the passenger load in the incline and a portion of the weight component of the step dead weight along the vertical direction of the main rail, which is generally small.
The weight component of the passenger load and the dead weight of the steps along the running direction is borne by the step chain, the load can be accumulated along with the increase of the height, and the pulling force of the step chain is close to the maximum value when the step chain runs to the position of the bending section on the main guide rail. When the unloading guide rail is not arranged, an included angle exists between adjacent step chains at the position of the bending section on the main guide rail, the step chains at the position have a large tension component along the normal direction of the ladder way, and the tension component is born by rolling step chain rollers, so that the fatigue life of the step chain rollers and the bearings in the rollers is adversely affected.
Therefore, in the case of higher passenger loading rates, and when the lift height is greater, a step chain roller unloading device is typically provided to take up most of the load of the main rail curved section, and in particular the step chain roller at the position of the main rail curved section.
The step chain roller unloading device commonly adopted in the industry is usually designed in such a way that rollers are externally arranged on a step chain, such as a publication CN206486165U, which requires a special step chain and an additional unloading guide rail, and has a complex structure and high cost; the unloading guide rail also needs to be adjusted in an adaptive manner, and time and labor are wasted. Meanwhile, the width of the escalator can be increased by the structure, so that the truss cost is further increased, and larger civil engineering is occupied; the method is also not suitable for the elevator-used increasing and unloading guide rail with the built-in rollers. In addition, the counter force born by the idler wheels at the inclined section and the pulling force of the step chain are eccentric in the left-right direction, so that the step chain bears additional bending moment, the stress on the step chain is not facilitated, and the problem of step chain deflection can be caused when the stress is severe.
Disclosure of Invention
The invention aims to solve the technical problem of how to reduce the load of a step chain roller without adding devices such as an independent unloading guide rail and the like.
In order to solve the technical problems, the invention provides a step chain with an unloading function, which is formed by connecting and encircling a plurality of chain links, wherein the chain links are connected through revolute pairs, and each revolute pair is provided with a step chain roller; at least one unloading wheel is rotatably arranged on each chain link, and the unloading wheels are positioned between the front step chain roller and the rear step chain roller which are adjacent; at the main rail inclined section of the passenger conveyor, the step chain roller is in contact with the main rail, and the unloading wheel is not in contact with the main rail; at a curved section on the main rail of the passenger conveyor, an unloading wheel is in contact with the main rail, and at least one of the step chain rollers adjacent to the unloading wheel in front of and behind the unloading wheel is not in contact with the main rail.
Preferably, at the main rail inclined section of the passenger conveyor, the gap G of the unloading wheel with the main rail satisfies the condition:
wherein R is the radius of curvature of the curved section on the main guide rail going path, R1 is the radius of the step chain roller, and P is the center distance between adjacent step chain rollers.
Preferably, the fixed center point of the unloading wheel on the chain link is located at the middle position of the adjacent step chain roller.
Preferably, the stepchain roller and the unloading wheel are disposed between two link plates of a link.
Preferably, the outer edge of the unloading wheel is made of wear-resistant high polymer materials.
Preferably, two unloading wheels are rotatably arranged on each chain link, the step chain roller is contacted with the main guide rail at the inclined section of the main guide rail of the passenger conveying device, and the unloading wheels are not contacted with the main guide rail; at the curved section on the main rail outgoing path of the passenger conveyor, the unloading wheel is in contact with the main rail, and none of the step chain rollers adjacent to the unloading wheel in front and behind are in contact with the main rail.
Preferably, at a curved section on the main rail loop of the passenger conveyor, the unloading wheel is in contact with the main rail, and at least one of the step chain rollers adjacent to the unloading wheel in front of and behind the unloading wheel is not in contact with the main rail.
Preferably, at the lower curved section of the main rail of the passenger conveyor, the unloading wheel is in contact with the main rail or the pressing rail, and at least one of the step chain rollers adjacent to the unloading wheel in front and behind is not in contact with the main rail or the pressing rail.
Preferably, at the curved section of the lower bend of the main rail loop of the passenger conveyor, the unloading wheel is in contact with the main rail or the press rail, and at least one of the step chain rollers adjacent to the unloading wheel in front of and behind the unloading wheel is not in contact with the main rail or the press rail.
Preferably, the unloading wheel comprises a first unloading wheel and a second unloading wheel; at a curved section on the main rail outgoing path of the passenger conveyor, the first unloading wheel is in contact with the main rail, and the second unloading wheel is not in contact with the main rail; at a curved section on the main rail circuit of the passenger conveyor, the second unloader wheel is in contact with the main rail, and the first unloader wheel is not in contact with the main rail.
The present invention also provides a passenger conveyor comprising a step chain with an unloading function as claimed in any one of claims 1 to 10.
Compared with the prior art, the invention has simple structure and does not need to add devices such as an independent unloading guide rail and the like.
Drawings
The invention is described in further detail below with reference to the attached drawings and detailed description:
FIG. 1 is a partial schematic view of a passenger conveyor main rail at a bend on its way to a road;
FIG. 2 is a partial schematic view of the step chain of example 1;
FIG. 3 is a schematic view of the step chain of example 1 at a main rail incline section of a passenger conveyor;
FIG. 4 is a schematic illustration of the step chain of example 1 at a curved segment on the primary rail exit of the passenger conveyor;
FIG. 5 is a partial schematic view of the step chain of example 2;
fig. 6 is a schematic view of the passenger conveyor in which the step chain having the unloading function is installed in the embodiment 3 and the embodiment 4;
fig. 7 is a partial schematic view of the step chain of example 3.
Detailed Description
Other advantages and technical effects of the present invention will become more fully apparent to those skilled in the art from the following disclosure, which is a detailed description of the present invention given by way of specific examples. The invention may be practiced or carried out in different embodiments, and details in this description may be applied from different points of view, without departing from the general inventive concept. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. The following exemplary embodiments of the present invention may be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. It should be appreciated that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the technical solution of these exemplary embodiments to those skilled in the art.
Example 1
As shown in fig. 1-4, fig. 1 is a partial schematic view of a passenger conveyor main guide rail at a bend section on its way. The step 3 is connected with the step chain 1 through a step shaft, and when the passenger conveying device operates, the driving device drives the step chain 1 to move, and step chain rollers on the step chain 1 roll on the main guide rail 2 to drive the step 3 to move.
In order to achieve the purpose of the invention, the embodiment provides a step chain 1 with unloading function, as shown in fig. 2, the step chain 1 is formed by connecting and encircling a plurality of chain links, the chain links are connected through revolute pairs 1j-c, and step chain rollers 1j-b are arranged at the positions of each revolute pair 1 j-c; at least one unloading wheel 1j-a is rotatably arranged on each chain link, and the unloading wheel 1j-a is positioned between the front and rear adjacent step chain rollers 1j-b;
as shown in fig. 3, at the main rail inclined section 21-b of the passenger conveyor, the step chain roller is in contact with the main rail 2, and the unloading wheel 1m-a is not in contact with the main rail 2; as shown in fig. 4, at the main rail upper bend section 21-a of the passenger conveyor, the unloading wheel 1n-a is in contact with the main rail 2, and at least one of the step chain rollers adjacent to the unloading wheel 1n-a in front and behind is not in contact with the main rail 2. Thus, the main guide rail going-over curved section has the function of an unloading rail, and the load is transferred to unload the acting force between the step chain roller and the main guide rail going-over curved section. And an unloading guide rail is not required to be additionally arranged, so that the material cost of parts is reduced.
In addition, in the traditional scheme, the unloading guide rail main body is of an arc structure, but the step chain roller can be lifted off the guide rail due to the action of the unloading wheel, so that the two ends of the unloading rail are required to be made into transition structures for reducing impact, and the unloading rail is complicated to form and high in manufacturing cost; at the same time, special adaptations are required to reduce the impact in the transition section. After the step chain of the embodiment is adopted, the arc structure of the bending section on the main guide rail going way can directly bear the function of the original unloading guide rail, and along with the step operation, the unloading wheel is gradually contacted with the arc structure of the bending section on the main guide rail going way, no additional transition structure is needed, and the operation is more stable.
The step chain roller 1j-b and the unloading wheel 1j-a are arranged between two chain plates of the chain link, and compared with a structure that the roller is arranged outside the step chain, the step chain roller is better in stress.
The fixed center point of the unloading wheel on the chain link is positioned at the middle position of the adjacent step chain roller. The outer edge of the unloading wheel is made of wear-resistant high polymer materials.
As shown in fig. 3, at the main rail inclined section of the passenger conveyor, the gap G of the unloading wheel and the main rail satisfies the condition:
wherein R is the curvature radius of the bending section of the main guide rail on the road, R1 is the radius of the step chain roller, and P is the center distance of adjacent step chain rollers.
The unloading wheel is preloaded on the step chain, so that the dimensional accuracy between the step chain roller and the unloading wheel can be effectively ensured, compared with a traditional structure, the unloading rail position adjusting work is omitted, and the production efficiency is improved.
Example 2
As shown in fig. 5, this embodiment differs from embodiment 1 in that two unloading wheels 1j-a1, 1j-a2 are rotatably provided on each of the links, and at the main rail inclined section of the passenger conveyor, the step chain roller is in contact with the main rail, and the unloading wheels are not in contact with the main rail; at the curved section on the main rail outgoing path of the passenger conveyor, the unloading wheel is in contact with the main rail, and none of the step chain rollers adjacent to the unloading wheel in front and behind are in contact with the main rail.
Example 3
As shown in fig. 6, the step chain of the present embodiment may be applied to the main rail loop upper curved section 22-a, the main rail down-going curved section press rail 8, or the main rail loop lower curved section press rail 9, in addition to the unloading function at the main rail down-going curved section 21-a as in embodiment 1. At the curved section 22-a of the main rail loop of the passenger conveyor, an unloading wheel is in contact with the main rail, and at least one of the step chain rollers adjacent to the unloading wheel in front and behind is not in contact with the main rail; at least one of the step chain rollers adjacent to the unloading wheel in front of and behind the unloading wheel is not in contact with the main guide rail or the pressing rail at the position of the main guide rail out-of-way lower bending section pressing rail 8 or the position of the main guide rail in-circuit lower bending section pressing rail 9 of the passenger conveying device.
The same unloading wheel may be shared at the main rail upper return bend 21-a and at the main rail upper return bend 22-a, at the main rail lower return bend press rail 8 or at the main rail lower return bend press rail 9. Preferably, different unloading wheels are used in the outgoing and return circuits.
As shown in fig. 7, the unloading wheel comprises a first unloading wheel 1j-a1 and a second unloading wheel 1j-a2; at a curved section on the main rail outgoing path of the passenger conveyor, the first unloading wheel is in contact with the main rail, and the second unloading wheel is not in contact with the main rail; at a curved section on the main rail circuit of the passenger conveyor, the second unloader wheel is in contact with the main rail, and the first unloader wheel is not in contact with the main rail.
Example 4
The present embodiment provides a passenger conveyor, as shown in fig. 6, comprising a truss 5, a lower swing mechanism 7, an upper swing mechanism 6, a main rail 2, and steps 3, and further comprising the step chain with unloading function described in the previous embodiment.
The passenger conveying device adopting the step chain with the unloading function can greatly reduce the number and the specification of the parts of the passenger conveying device under the condition that the rest parts adopt the same structure, and is beneficial to production management and flexible production of a production line.
Under the condition of not increasing the width of the passenger conveying device, the roller unloading function of the step chain is achieved, the space is saved, the occupied civil engineering is small, and the truss cost is reduced; the requirement for unloading the step chain roller under the condition of a narrow well can be met; the modification of the existing passenger conveyor can also be conveniently realized.
The present invention has been described in detail by way of specific embodiments and examples, but these should not be construed as limiting the invention. Many variations and modifications may be made by one skilled in the art without departing from the principles of the invention, which is also considered to be within the scope of the invention.
Claims (11)
1. The step chain with the unloading function is formed by connecting and encircling a plurality of chain links, wherein the chain links are connected through revolute pairs, and each revolute pair is provided with a step chain roller;
the chain link is characterized in that each chain link is rotatably provided with at least one unloading wheel, and the unloading wheels are positioned between the front step chain roller and the rear step chain roller which are adjacent;
at the main rail inclined section of the passenger conveyor, the step chain roller is in contact with the main rail, and the unloading wheel is not in contact with the main rail; at a curved section on the main rail of the passenger conveyor, an unloading wheel is in contact with the main rail, and at least one of the step chain rollers adjacent to the unloading wheel in front of and behind the unloading wheel is not in contact with the main rail.
2. The step chain with an unloading function according to claim 1, wherein at the main rail inclined section of the passenger conveyor, a gap G of the unloading wheel with the main rail satisfies a condition:
wherein R is the radius of curvature of the curved section on the main guide rail going path, R1 is the radius of the step chain roller, and P is the center distance between adjacent step chain rollers.
3. The step chain with unloading function according to claim 2, wherein the fixed center point of the unloading wheel on the chain link is located at a middle position of the adjacent step chain roller.
4. The step chain with an unloading function according to claim 1, wherein the step chain roller and the unloading wheel are disposed between two link plates of a link.
5. The step chain with unloading function according to claim 1, wherein the outer edge of the unloading wheel is made of wear-resistant polymer material.
6. The step chain with unloading function according to claim 1, wherein two unloading wheels are rotatably provided on each of the links, the step chain roller is in contact with the main rail at the main rail inclined section of the passenger conveyor, and the unloading wheels are not in contact with the main rail; at the curved section on the main rail outgoing path of the passenger conveyor, the unloading wheel is in contact with the main rail, and none of the step chain rollers adjacent to the unloading wheel in front and behind are in contact with the main rail.
7. The step chain with an unloading function according to claim 1, wherein at least one of the step chain rollers adjacent to the unloading wheel in front and rear is not in contact with the main rail at a curved section on the main rail loop of the passenger conveyor.
8. The step chain with an unloading function according to claim 1, wherein at least one of the step chain rollers adjacent to the unloading wheel in front and rear is not in contact with the main rail or the pressing rail at the pressing rail of the lower curved section of the main rail of the passenger conveyor.
9. The step chain with an unloading function according to claim 1, wherein at least one of the step chain rollers adjacent to the unloading wheel in front and rear is not in contact with the main rail or the pressing rail at the pressing rail of the lower curved section of the main rail loop of the passenger conveyor.
10. The step chain with an unloading function according to claim 1, wherein the unloading wheel includes a first unloading wheel and a second unloading wheel; at a curved section on the main rail outgoing path of the passenger conveyor, the first unloading wheel is in contact with the main rail, and the second unloading wheel is not in contact with the main rail; at a curved section on the main rail circuit of the passenger conveyor, the second unloader wheel is in contact with the main rail, and the first unloader wheel is not in contact with the main rail.
11. A passenger conveyor comprising the step chain with an unloading function according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410169403.2A CN117842822A (en) | 2024-02-06 | 2024-02-06 | Step chain with unloading function and passenger conveying device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410169403.2A CN117842822A (en) | 2024-02-06 | 2024-02-06 | Step chain with unloading function and passenger conveying device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117842822A true CN117842822A (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410169403.2A Pending CN117842822A (en) | 2024-02-06 | 2024-02-06 | Step chain with unloading function and passenger conveying device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117842822A (en) |
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2024
- 2024-02-06 CN CN202410169403.2A patent/CN117842822A/en active Pending
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