Step device and escalator or moving sidewalk
By designing a combination structure of limit projections and buffers on the step pedals of escalators or automatic sidewalks, the problems of high noise, poor vibration reduction effect and low service life of the step pedals in the prior art are solved, and the problem of high noise, poor vibration reduction effect and low service life of the step pedals in the prior art is realized. Smoother, more comfortable stair ride experience and longer service life.
Patent Information
- Application Number
- CN202421329894.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-06-12
AI Technical Summary
The steps of existing escalators or automatic sidewalks have problems such as complex structure, large installation space, high noise, poor vibration reduction effect and low service life when running.
A stepping device is designed, by arranging the first stepping chain roller, the first guide rail, the second stepping chain roller and the second guide rail at both ends of the length direction of the stepping pedal, and designing a limiting projection and a buffer member on the guide rail. The limiting projection is inserted into the limiting slot, and the buffer member presses against the limiting slot and limiting projection to avoid direct rigid contact and reduce noise and wear.
Effectively prevent noise generation, reduce wear, improve component service life, improve the stability of runner pedals, improve passengers' comfort and experience of riding ladders, simplify the structure, reduce installation space occupation and manufacturing costs.
Smart Images
Figure CN222523941U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of escalators or moving walkways, and in particular to a step device and an escalator or moving walkway. Background Art
[0002] An escalator or moving walkway is a conveying device used to transport people or goods between two locations with a longitudinal or lateral distance. It is mainly used to improve people's convenience and experience in life. When riding an escalator or moving walkway, passengers stand on the step device, and the transportation of people or goods is achieved through the operation of the steps. The step device mainly includes multiple step pedals, which are connected end to end in a ring shape and are connected together. By continuously rotating in a three-dimensional space, the purpose of continuous transportation is achieved.
[0003] The step tread is the direct carrier of the weight of people or objects. In order to ensure safety and improve the riding comfort of passengers, the step tread should be as stable as possible, with low vibration and noise, to avoid serpentine dislocation that affects the riding experience. To achieve this goal, the current traditional escalator or moving walkway mainly installs a guide mechanism and an anti-floating hook on the skirt board on the side of the step tread to limit the swing of the step tread in the left and right directions and prevent the step tread from floating up. However, this solution has problems such as complex structure, large installation space, high implementation cost, high noise due to rigid contact, poor vibration reduction effect, and short service life due to severe wear. Summary of the invention
[0004] Based on this, it is necessary to provide a step device and an escalator or moving walkway to address the problems of complex structure, large installation space, high noise, poor vibration reduction effect and short service life.
[0005] In a first aspect of the present application, a step device is provided, comprising:
[0006] Step treads;
[0007] A first step chain roller and a second step chain roller, wherein the first step chain roller is rotatably arranged at one end of the step pedal in the length direction, and the second step chain roller is rotatably arranged at the other end of the step pedal in the length direction, and the wheel circumferences of the first step chain roller and the second step chain roller are both concave to form a limiting groove in an annular structure, and the limiting groove has a first groove side wall, and the first groove side wall is inclined toward the center direction of the limiting groove;
[0008] A first guide rail and a second guide rail, wherein the first guide rail is arranged on the outer side of one end of the step pedal in the length direction, and the second guide rail is arranged on the outer side of the other end of the step pedal in the length direction, and the first guide rail and the second guide rail are both provided with a limiting protrusion of a strip structure, and the limiting protrusion has a first side surface, and the first side surface is set as an inclined surface, and the first side surface is inclined outwardly away from the center line of the limiting protrusion, and the first step chain roller is rotatably arranged on the first guide rail, and the second step chain roller is rotatably arranged on the second guide rail; and,
[0009] A buffer component is coated on the surface of the limiting protrusion, and the limiting protrusion is inserted into the limiting groove, so that the buffer component is pressed between the limiting groove and the limiting protrusion, and the first groove side wall is matched with the first side inclined surface.
[0010] In the step device of the present scheme, the first step chain roller and the first guide rail and the second step chain roller and the second guide rail are respectively arranged at both ends in the length direction of the step pedal, the first step chain roller rolls on the first guide rail and the second step chain roller rolls on the second guide rail, so that the step pedal runs along a preset path under the support of the first guide rail and the second guide rail; further, since a limiting protrusion is designed on the first guide rail and the second guide rail, a buffer is installed on the surface of the limiting protrusion, and at the same time, the circumferential surface of the first step chain roller and the second step chain roller is concave to form a limiting groove. When the limiting protrusion is inserted and assembled into the limiting groove, on the one hand, the buffer is pressed between the limiting groove and the limiting protrusion, thereby avoiding the first step chain roller and the first guide rail and The second step chain roller is in direct rigid contact with the second guide rail, which can not only effectively prevent noise generation, but also help to reduce wear and increase the service life of components. On the other hand, the limiting protrusion is clamped in the limiting groove, which can not only play a limiting role on the left and right, but also the side wall of the first groove and the first side surface are matched with an inclined surface, which limits the freedom of movement of the first step chain roller and the second step chain roller in the up and down directions, thereby preventing the step pedal from floating up, greatly improving the smoothness of the step pedal operation, and improving the comfort and experience of passengers taking the elevator. Furthermore, the limiting structure composed of a limiting protrusion and a limiting groove eliminates the traditional guide mechanism and floating hook, simplifies the overall structure, reduces the installation space occupancy, and also reduces the manufacturing cost.
[0011] The technical solution of this application is further described below:
[0012] In one embodiment, the limiting groove also has a second groove side wall arranged opposite to the first groove side wall, and the second groove side wall is inclined toward the center direction of the limiting groove. The limiting protrusion also has a second side surface opposite to the first side surface, and the second side surface is set as an inclined surface, and the second side surface is inclined in a direction away from the center line of the limiting protrusion, and the second groove side wall cooperates with the inclined surface of the second side surface.
[0013] In one embodiment, a first transition fillet is formed between the first groove side wall and the groove bottom wall of the limiting groove, and between the second groove side wall and the groove bottom wall of the limiting groove.
[0014] In one embodiment, the first guide rail and the second guide rail both include a guide rail body, and the limiting protrusion is formed by the guide rail body protruding toward the surface of the first step chain roller and the second step chain roller;
[0015] A second transition fillet is formed between the first side surface and the surface of the guide rail body, and between the second side surface and the surface of the guide rail body.
[0016] In one embodiment, the surface of the guide rail body facing the first step chain roller and the second step chain roller is set as a bearing surface, and the bearing surface is in rolling contact with the circumferential surface of the first step chain roller and the second step chain roller.
[0017] In one embodiment, the buffer member includes a main body, a first extension portion, and a second extension portion, the first extension portion and the second extension portion are respectively connected to two ends of the main body, the first extension portion and the second extension portion are both arranged on the bearing surface, and the first extension portion and the second extension portion are both pressed between the bearing surface and the first step chain roller and the second step chain roller.
[0018] In one of the embodiments, the limiting protrusion has a top surface away from the guide rail body, and a portion of the buffer member disposed on the top surface is spaced apart from a bottom wall of the limiting groove.
[0019] In one embodiment, there are at least two limit grooves, and at least two limit grooves are arranged at intervals along the width direction of the wheel circumference. The first guide rail and the second guide rail are both provided with at least two limit protrusions spaced apart from each other, and the limit protrusions are assembled one-to-one with the limit grooves.
[0020] In one embodiment, a first adhesive member is provided between the buffer member and the first guide rail, and the first adhesive member adheres and fixes the buffer member to the first guide rail; a second adhesive member is provided between the buffer member and the second guide rail, and the second adhesive member adheres and fixes the buffer member to the second guide rail.
[0021] A second aspect of the present application further provides an escalator or a moving walkway, which comprises the step device as described above. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0024] FIG1 is a schematic diagram of the cross-sectional structure of an escalator or moving walkway according to an embodiment.
[0025] FIG. 2 is an assembly structure diagram of the first step chain roller and the first guide rail in FIG. 1 .
[0026] Figure 3 It is a schematic diagram of the explosion structure of Figure 2.
[0027] Description of reference numerals:
[0028] 100, escalator or moving walkway; 10, step pedal; 20, first step chain roller; 30, second step chain roller; 20a, limiting groove; 21a, first groove side wall; 22a, second groove side wall; 40, first guide rail; 50, second guide rail; 40a, limiting protrusion; 41a, first side surface; 42a, second side surface; 40b, guide rail body; 41b, bearing surface; 60, buffer member; 61, body portion; 62, first extension portion; 63, second extension portion. DETAILED DESCRIPTION
[0029] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0030] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.
[0031] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0032] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.
[0033] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0034] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.
[0035] Referring to FIG. 1 , the present application provides an escalator or moving walkway 100 , which includes a step device.
[0036] FIG1 shows a step device according to an embodiment of the present application, including a step pedal 10, a first step chain roller 20, a second step chain roller 30, a first guide rail 40, a second guide rail 50, and a buffer 60. The step pedal 10 is a direct carrier for carrying people or objects, and generally comprises a pedal body and anti-slip ribs arranged on the tread of the pedal body. Usually, the step device includes a plurality of step pedals 10, which are arranged in a ring shape, and two adjacent step pedals 10 are rotatably connected by a pin shaft.
[0037] Please continue to refer to Figures 2 and Figure 3 The first step chain roller 20 is rotatably arranged at one end of the step pedal 10 in the length direction, and the second step chain roller 30 is rotatably arranged at the other end of the step pedal 10 in the length direction. The circumferential surfaces of the first step chain roller 20 and the second step chain roller 30 are both concave to form a limiting groove 20a with an annular structure. The limiting groove 20a has a first groove side wall 21a, and the first groove side wall 21a is inclined toward the center direction of the limiting groove 20a; the first guide rail 40 is arranged on the outer side of one end of the step pedal 10 in the length direction, and the second guide rail 50 is arranged on the outer side of the other end of the step pedal 10 in the length direction. The first guide rail 40 and the first guide rail 50 are arranged on the outer side of the first guide rail 40 and the second guide rail 50. Both guide rails 50 are provided with a limiting protrusion 40a of a strip structure, the limiting protrusion 40a has a first side surface 41a, the first side surface 41a is set as an inclined surface, the first side surface 41a is inclined outwardly away from the center line of the limiting protrusion 40a, the first step chain roller 20 is rollably arranged on the first guide rail 40, and the second step chain roller 30 is rollably arranged on the second guide rail 50; the buffer member 60 is covered on the surface of the limiting protrusion 40a, and the limiting protrusion 40a is inserted into the limiting groove 20a, so that the buffer member 60 is pressed between the limiting groove 20a and the limiting protrusion 40a, and the first groove side wall 21a is matched with the inclined surface of the first side surface 41a.
[0038] In summary, the implementation of the technical solution of this embodiment will have the following beneficial effects: in the step device of this solution, by arranging the first step chain roller 20 and the first guide rail 40 and the second step chain roller 30 and the second guide rail 50 at both ends of the length direction of the step pedal 10 respectively, the first step chain roller 20 rolls on the first guide rail 40 and the second step chain roller 30 rolls on the second guide rail 50, so that the step pedal 10 runs along a preset path under the support of the first guide rail 40 and the second guide rail 50; further, since a limiting protrusion 40a is designed on the first guide rail 40 and the second guide rail 50, a buffer 60 is installed on the surface of the limiting protrusion 40a, and at the same time, the circumferential surface of the first step chain roller 20 and the second step chain roller 30 is concave to form a limiting groove 20a. When the limiting protrusion 40a is inserted and assembled into the limiting groove 20a, on the one hand, the buffer 60 is pressed between the limiting groove 20a and the limiting protrusion 40a, avoiding direct rigid contact between the first step chain roller 20 and the first guide rail 40, as well as the second step chain roller 30 and the second guide rail 50, which can not only effectively prevent noise generation, but also help to reduce wear and increase the service life of components; on the other hand, the limiting protrusion 40a is clamped in the limiting groove 20a, which can not only play a limiting role on the left and right, but also the first groove side wall 21a and the first side surface 41a are matched with inclined surfaces, which limits the freedom of movement of the first step chain roller 20 and the second step chain roller 30 in the up and down directions, thereby preventing the step pedal 10 from floating up, greatly improving the stability of the step pedal 10, and improving the comfort and experience of passengers on the elevator; furthermore, the limiting structure composed of the limiting protrusion 40a and the limiting groove 20a eliminates the traditional guiding mechanism and floating hook, simplifies the overall structure, reduces the installation space occupancy, and also reduces the manufacturing cost.
[0039] Please continue to refer to Figures 2 and Figure 3 Further, on the basis of the above embodiment, the limiting groove 20a further has a second groove side wall 22a arranged opposite to the first groove side wall 21a, the second groove side wall 22a is inclined toward the center direction of the limiting groove 20a, the limiting protrusion 40a further has a second side surface 42a opposite to the first side surface 41a, the second side surface 42a is set as an inclined surface, and the second side surface 42a is inclined in the direction away from the center line of the limiting protrusion 40a, and the second groove side wall 22a and the second side surface 42a are matched with each other on the inclined surface. Therefore, by virtue of the simultaneous bevel matching of the first groove side wall 21a and the first side surface 41a and the second groove side wall 22a and the second side surface 42a, the limiting protrusion 40a and the limiting groove 20a form an inverted limiting structure, so as to better limit the first step chain roller 20 and the second step chain roller 30 from swinging in the height direction, and further better restrict the step pedal 10 from floating up.
[0040] It can be understood that the cross section of the limiting protrusion 40a is an inverted trapezoidal structure, and the cross section of the limiting groove 20a is adapted to the cross section shape of the limiting protrusion 40a.
[0041] In actual use, the step pedal 10 usually bears a large load and is subject to greater vibration and impact. In order to avoid stress concentration or fatigue damage, in one embodiment, a first transition fillet is formed between the first groove side wall 21a and the groove bottom wall of the limiting groove 20a, and between the second groove side wall 22a and the groove bottom wall of the limiting groove 20a.
[0042] Similarly, in another embodiment, the first guide rail 40 and the second guide rail 50 both include a guide rail body 40b, and the limiting protrusion 40a is formed by the guide rail body 40b protruding toward the surface of the first step chain roller 20 and the second step chain roller 30; a second transition fillet is formed between the first side surface 41a and the surface of the guide rail body 40b and between the second side surface 42a and the surface of the guide rail body 40b. The second transition fillet can avoid stress concentration, reduce the degree of damage caused by vibration and impact, and prevent the root of the limiting protrusion 40a from impact or fatigue fracture.
[0043] Please continue to refer to Figures 2 and Figure 3 In one embodiment, the surface of the guide rail body 40b facing the first step chain roller 20 and the second step chain roller 30 is set as a bearing surface 41b, and the bearing surface 41b is in rolling contact with the circumference of the first step chain roller 20 and the second step chain roller 30. The circumference rolls on the bearing surface 41b, so that the bearing surface 41b effectively supports the first step chain roller 20 and the second step chain roller 30, so that the step pedal 10 runs along the first guide rail 40 and the second guide rail 50.
[0044] Specifically, in one embodiment, the buffer member 60 includes a main body 61, a first extension portion 62, and a second extension portion 63, wherein the first extension portion 62 and the second extension portion 63 are respectively connected to both ends of the main body 61, and the first extension portion 62 and the second extension portion 63 are both disposed on the bearing surface 41b, and the first extension portion 62 and the second extension portion 63 are both pressed between the bearing surface 41b and the first step chain roller 20 and the second step chain roller 30. In this way, the first extension portion 62 and the second extension portion 63 can form a flexible contact between the bearing surface 41b and the first step chain roller 20 and the second step chain roller 30, thereby reducing the vibration and noise of the first step chain roller 20 and the second step chain roller 30 during operation.
[0045] It can be understood that the main body 61 of the buffer member 60 is covered on the outside of the limiting protrusion 40a, and the main body 61 abuts against the first groove side wall 21a and the second groove side wall 22a of the limiting groove 20a, which helps to reduce the collision noise generated when the first step chain roller 20 and the second step chain roller 30 swing left and right during operation.
[0046] In the present application, the buffer member 60 may be selected as one of a rubber pad, an epoxy resin pad, etc., or a combination of at least two or more thereof, and the selection may be made according to actual needs.
[0047] Furthermore, the limiting protrusion 40a has a top surface away from the guide rail body 40b, and the portion of the buffer 60 disposed on the top surface is spaced apart from the bottom wall of the limiting groove 20a. On the one hand, the formed interval can reduce the contact area between the limiting protrusion 40a (i.e., the buffer 60) and the limiting groove 20a, thereby effectively reducing the friction resistance encountered by the first step chain roller 20 and the second step chain roller 30 during operation; on the other hand, when each guide rail and / or each step chain roller wears, resulting in the disappearance of the interval and the top surface of the limiting protrusion 40a abutting against the bottom wall of the limiting groove 20a through the buffer 60, it also helps to reduce the noise generated during the up and down vibration.
[0048] In addition, based on any of the above embodiments, at least two limiting grooves 20a are provided, and at least two limiting grooves 20a are arranged at intervals along the width direction of the wheel circumference, and the first guide rail 40 and the second guide rail 50 are each provided with at least two limiting protrusions 40a spaced apart from each other, and the limiting protrusions 40a are assembled with the limiting grooves 20a in a one-to-one correspondence. In this way, the assembly strength of the first guide rail 40 and the first step chain roller 20 and the second guide rail 50 and the second step chain roller 30 can be further improved, and the left-right direction limiting and anti-floating effects of the step pedal 10 are better.
[0049] Optionally, a first adhesive member is provided between the buffer member 60 and the first guide rail 40, and the first adhesive member makes the buffer member 60 and the first guide rail 40 bonded and fixed; a second adhesive member is provided between the buffer member 60 and the second guide rail 50, and the second adhesive member makes the buffer member 60 and the second guide rail 50 bonded and fixed. Therefore, the installation method of the buffer member 60 and the first guide rail 40 and the second guide rail 50 is simple, and the connection reliability is high.
[0050] Of course, in other optional embodiments, the buffer member 60 may also be installed and fixed by any of the following methods, such as screw connection, clip connection, etc.
[0051] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0052] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.
Claims
1. A step device, characterized in that: include: Step treads; A first step chain roller and a second step chain roller, wherein the first step chain roller is rotatably arranged at one end of the step pedal in the length direction, and the second step chain roller is rotatably arranged at the other end of the step pedal in the length direction, and the wheel circumferences of the first step chain roller and the second step chain roller are both concave to form a limiting groove in an annular structure, and the limiting groove has a first groove side wall, and the first groove side wall is inclined toward the center direction of the limiting groove; A first guide rail and a second guide rail, wherein the first guide rail is arranged on the outer side of one end of the step pedal in the length direction, and the second guide rail is arranged on the outer side of the other end of the step pedal in the length direction, and the first guide rail and the second guide rail are both provided with a limiting protrusion of a strip structure, and the limiting protrusion has a first side surface, and the first side surface is set as an inclined surface, and the first side surface is inclined outwardly away from the center line of the limiting protrusion, and the first step chain roller is rotatably arranged on the first guide rail, and the second step chain roller is rotatably arranged on the second guide rail; and, A buffer component is coated on the surface of the limiting protrusion, and the limiting protrusion is inserted into the limiting groove, so that the buffer component is pressed between the limiting groove and the limiting protrusion, and the first groove side wall is matched with the first side inclined surface.
2. The step device according to claim 1, characterized in that: The limiting groove also has a second groove side wall arranged opposite to the first groove side wall, and the second groove side wall is inclined toward the center direction of the limiting groove. The limiting protrusion also has a second side surface opposite to the first side surface, and the second side surface is set as an inclined surface, and the second side surface is inclined in the direction away from the center line of the limiting protrusion, and the second groove side wall cooperates with the inclined surface of the second side surface.
3. The step device according to claim 2, characterized in that: A first transition fillet is formed between the first groove side wall and the groove bottom wall of the limiting groove, and between the second groove side wall and the groove bottom wall of the limiting groove.
4. The step device according to claim 2, characterized in that: The first guide rail and the second guide rail both include a guide rail body, and the limiting protrusion is formed by the guide rail body protruding toward the surface of the first step chain roller and the second step chain roller; A second transition fillet is formed between the first side surface and the surface of the guide rail body, and between the second side surface and the surface of the guide rail body.
5. The step device according to claim 4, characterized in that: The surface of the guide rail body facing the first step chain roller and the second step chain roller is set as a bearing surface, and the bearing surface is in rolling contact with the circumferential surface of the first step chain roller and the second step chain roller.
6. The step device according to claim 5, characterized in that: The buffer component includes a main body, a first extension portion and a second extension portion, the first extension portion and the second extension portion are respectively connected to two ends of the main body, the first extension portion and the second extension portion are both arranged on the bearing surface, and the first extension portion and the second extension portion are both pressed between the bearing surface and the first step chain roller and the second step chain roller.
7. The step device according to claim 4, characterized in that: The limiting protrusion has a top surface away from the guide rail body, and the portion of the buffer member disposed on the top surface is spaced apart from the bottom wall of the limiting groove.
8. The step device according to claim 1, characterized in that: There are at least two limit grooves, and at least two limit grooves are arranged at intervals along the width direction of the wheel circumference. The first guide rail and the second guide rail are both provided with at least two limit protrusions spaced apart from each other, and the limit protrusions are assembled with the limit grooves in a one-to-one correspondence.
9. The step device according to claim 1, characterized in that: A first adhesive member is provided between the buffer member and the first guide rail, and the first adhesive member enables the buffer member to be bonded and fixed to the first guide rail; a second adhesive member is provided between the buffer member and the second guide rail, and the second adhesive member enables the buffer member to be bonded and fixed to the second guide rail.
10. An escalator or moving walkway, characterized in that: The invention comprises a step device as claimed in any one of claims 1 to 9.