Step chain and escalator
By using nylon rollers and a ring structure design in the step chain, combined with a four-pitch design, the problem of high noise in traditional step chains is solved, achieving low-noise, low-cost, and highly stable escalator operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2026-03-24
AI Technical Summary
Traditional ladder chains generate significant noise during operation, affecting passenger comfort and the environment, and may also harm the health of staff.
Nylon rollers are used instead of metal rollers. The nylon rollers are made of PA66, which has self-lubricating properties and reduces friction noise. The ring-shaped protrusions and grooves on the nylon rollers and sleeves reduce collision and vibration noise. At the same time, the ladder chain has a four-pitch design to reduce the chain pitch and reduce the impact energy between the chain and the sprocket.
It effectively reduces operating noise, improves user experience, reduces maintenance costs, enhances environmental friendliness, improves operational stability and extends service life, and improves equipment quality.
Smart Images
Figure CN224030459U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to chain technology field, specifically, relate to a step chain and escalator. BACKGROUND
[0002] In various public places, such as shopping mall, subway station and airport etc., escalator has become an indispensable facility. However, the traditional step chain often produces larger noise in the running process, which brings many adverse effects to people's travel and surrounding environment.
[0003] From the technical point of view, the step chain is composed of many parts, and the friction, collision between parts and the meshing process of chain and sprocket will produce vibration and noise. Because of the early design and manufacturing process is relatively simple, the importance of noise control is not enough, leading to larger noise when the step chain runs.
[0004] From the social demand point of view, with the improvement of people's living quality, the comfort and quietness of public environment have higher requirements. Excessive noise will not only cause the discomfort of passengers, but also may cause damage to the physical and mental health of the staff in this environment for a long time. INVENTION CONTENTS
[0005] The purpose of the utility model includes providing a step chain and escalator, which has simple structure, convenient installation and use, can effectively reduce the running noise, and has low manufacturing and using cost.
[0006] The embodiment of the utility model can be realized as follows:
[0007] In the first aspect, the utility model provides a step chain, which comprises a plurality of outer links and a plurality of inner links.
[0008] The outer link comprises two outer link plates and a pin shaft, and the two ends of the pin shaft are connected with the two outer link plates respectively.
[0009] The inner link comprises a sleeve, a nylon roller and two inner link plates, the two ends of the sleeve are connected with the two inner link plates respectively, the sleeve is sleeved on the pin shaft, and the nylon roller is sleeved on the sleeve.
[0010] In the optional implementation, the two ends of the nylon roller along the axial direction are both configured with arc surfaces.
[0011] In the optional implementation, the inner circumferential surface of the nylon roller is configured with a plurality of first annular protrusions.
[0012] In the optional implementation, the outer circumference of the sleeve is configured with a plurality of first annular grooves; each first annular groove is matched with a first annular protrusion.
[0013] In an optional embodiment, a plurality of first annular protrusions are arranged along the axial direction of the nylon roller, and a plurality of first annular grooves are arranged along the axial direction of the sleeve.
[0014] In an optional embodiment, a plurality of second annular protrusions are arranged on the outer periphery of the sleeve, and the plurality of second annular protrusions are arranged along the axial direction of the sleeve.
[0015] Each first annular protrusion corresponds to the region between two adjacent second annular protrusions.
[0016] In an optional embodiment, the inner periphery of the nylon roller is provided with an annular positioning groove, and the outer periphery of the sleeve is provided with an annular positioning protrusion which is positioned and matched with the annular positioning groove.
[0017] In an optional embodiment, the annular positioning groove is located in the middle of the nylon roller, and the annular positioning protrusion is located in the middle of the sleeve.
[0018] In an optional embodiment, the inner side of the inner chain link is provided with a retaining ring, and the end of the nylon roller is located in the retaining ring.
[0019] In a second aspect, the utility model provides a kind of escalator, and the escalator includes drive unit, multiple steps and the step chain of above-mentioned;
[0020] Drive unit is connected with step chain transmission, and step chain is connected with all steps transmission, and every step corresponds four pitches of step chain.
[0021] The beneficial effects of the step chain and the escalator provided by the embodiments of the utility model include:
[0022] The step chain includes multiple outer links and multiple inner links; the outer link includes two outer chain plates and a pin shaft, the two ends of the pin shaft are connected with the two outer chain plates respectively; the inner link includes a sleeve, a nylon roller and two inner chain plates, the two ends of the sleeve are connected with the two inner chain plates respectively, and the sleeve is sleeved on the pin shaft, and the nylon roller is sleeved on the sleeve. The step chain is applied to the escalator, which has simple structure, convenient installation and use, can effectively reduce running noise, and has low manufacturing and using cost. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as the limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0024] Figure 1The connection schematic view of the outer chain link and the inner chain link provided for the embodiment;
[0025] Figure 2 The structure schematic view of the ladder chain provided for the embodiment;
[0026] Figure 3 The structure schematic view of the nylon roller provided for the embodiment;
[0027] Figure 4 The setting schematic view of the arc surface of the nylon roller provided for the embodiment;
[0028] Figure 5 The setting schematic view of the first annular protrusion and the first annular groove provided for the embodiment;
[0029] Figure 6 The setting schematic view of the first annular protrusion and the second annular protrusion provided for the embodiment;
[0030] Figure 7 The setting schematic view of the annular positioning groove and the annular positioning protrusion provided for the embodiment;
[0031] Figure 8 The setting schematic view of the blocking ring provided for the embodiment.
[0032] Icon: 100-ladder chain; 110-outer chain link; 120-inner chain link; 111-outer chain plate; 112-pivot; 121-sleeve; 122-nylon roller; 123-inner chain plate; 124-arc surface; 125-first annular protrusion; 126-first annular groove; 127-second annular protrusion; 128-annular positioning groove; 129-annular positioning protrusion; 113-blocking ring. DETAILED DESCRIPTION
[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.
[0034] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.
[0035] It should be noted that like reference numerals and letters refer to like items in the several views, and once an item is defined in one view, it need not be further defined and explained in the subsequent views.
[0036] In the description of the utility model, it needs to be explained that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.
[0037] In addition, if the terms "first", "second" and the like are used only to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0038] It should be noted that the features in the embodiments of the utility model can be combined with each other without conflict.
[0039] Please refer to Figures 1-3 The embodiment provides a step chain 100, which comprises a plurality of outer links 110 and a plurality of inner links 120.
[0040] The outer link 110 comprises two outer link plates 111 and a pin shaft 112, both ends of the pin shaft 112 are connected with the two outer link plates 111 respectively.
[0041] The inner link 120 comprises a sleeve 121, a nylon roller 122 and two inner link plates 123, both ends of the sleeve 121 are connected with the two inner link plates 123 respectively, the sleeve 121 is sleeved on the pin shaft 112, and the nylon roller 122 is sleeved on the sleeve 121.
[0042] Please refer to Figures 1-3 The working principle of the step chain 100 is as follows.
[0043] The step chain 100 comprises a plurality of outer links 110 and a plurality of inner links 120, when assembled and used, the plurality of outer links 110 and the plurality of inner links 120 are connected in a ring in a staggered sequence, and are connected with an external transmission structure in transmission, so that the step can be driven to run under the driving action of the external transmission structure when the step is connected with the step transmission through the step shaft.
[0044] Since the outer link 110 comprises two outer link plates 111 and a pin shaft 112, both ends of the pin shaft 112 are connected with the two outer link plates 111 respectively; the inner link 120 comprises a sleeve 121, a nylon roller 122 and two inner link plates 123, both ends of the sleeve 121 are connected with the two inner link plates 123 respectively, and the sleeve 121 is sleeved on the pin shaft 112, and the nylon roller 122 is sleeved on the sleeve 121.
[0045] Wherein, the material of the nylon roller 122 is PA66 nylon material; thus, through the setting of the nylon roller 122, the nylon roller 122 can be continuously engaged with the chain wheel during the operation of the step chain 100, so as to drive the step movement; when the step chain 100 is engaged with the chain wheel, compared with the metal roller in the prior art, the metal roller will collide with the sleeve 121 and the chain wheel to generate noise, and the chain will also vibrate; and the nylon roller 122 of the embodiment can avoid the noise caused by the mutual collision between the metal when the step chain 100 is engaged with the chain wheel, at the same time, the nylon roller 122 can absorb and reduce the vibration energy, so as to reduce the noise caused by vibration. In addition, the nylon roller 122 made of PA66 nylon material has the characteristics of self-lubrication, which can reduce the friction noise caused by insufficient lubrication to a certain extent.
[0046] In summary, the step chain 100 applied to the escalator has the advantages of simple structure, convenient installation and use, can effectively reduce the running noise, and low manufacturing and using cost.
[0047] Further, please refer to Figures 1-4 In the embodiment, in order to reduce the friction or collision noise between the nylon roller 122 and the inner link plate 123 during use, therefore, when the nylon roller 122 is configured, the arc-shaped surface 124 can be configured on both ends of the nylon roller 122 along the axial direction of the nylon roller 122, and such a setting mode can reduce the friction surface during use, and further can reduce the running noise.
[0048] In addition, please refer to Figures 1-8 In order to reduce the collision noise caused by the movement along the axial direction of the sleeve 121 after being sleeved on the sleeve 121 during the operation of the step chain 100, the following structure can be used; the specific content is as follows:
[0049] First, please refer to Figures 1-5The inner circumferential surface of the nylon roller 122 can be provided with a plurality of first annular protrusions 125. The outer circumference of the sleeve 121 is provided with a plurality of first annular grooves 126, each of which corresponds to a first annular protrusion 125. Moreover, the plurality of first annular protrusions 125 are arranged along the axial direction of the nylon roller 122, and the plurality of first annular grooves 126 are arranged along the axial direction of the sleeve 121. In this way, after the nylon roller 122 is assembled into the sleeve 121, the first annular grooves 126 and the first annular protrusions 125 cooperate to position the nylon roller 122 in the axial direction of the sleeve 121, reducing the movement and displacement of the nylon roller 122 in the axial direction of the sleeve 121, and thus reducing the noise caused by collisions during operation.
[0050] In addition, please refer to Figures 1-6 When the first annular protrusions 125 cooperate with the structure of the outer circumference of the sleeve 121, a plurality of second annular protrusions 127 can also be arranged on the outer circumference of the sleeve 121, and the plurality of second annular protrusions 127 are arranged along the axial direction of the sleeve 121. Each first annular protrusion 125 corresponds to the region between two adjacent second annular protrusions 127. That is, unlike the arrangement of the first annular grooves 126, a plurality of second annular protrusions 127 can also be arranged on the outer circumference of the sleeve 121, and each first annular protrusion 125 corresponds to two adjacent second annular protrusions 127, and the first annular protrusion 125 is accommodated between the two adjacent second annular protrusions 127. That is, the two second annular protrusions 127 and the first annular protrusion 125 can be positioned and cooperated, and the movement or displacement of the nylon roller 122 in the axial direction of the sleeve 121 is limited.
[0051] In addition to the above structure, please refer to Figures 1-7 The inner circumferential surface of the nylon roller 122 can be provided with a plurality of first annular protrusions 125. The outer circumference of the sleeve 121 is provided with a plurality of first annular grooves 126, each of which corresponds to a first annular protrusion 125. Moreover, the plurality of first annular protrusions 125 are arranged along the axial direction of the nylon roller 122, and the plurality of first annular grooves 126 are arranged along the axial direction of the sleeve 121. In this way, after the nylon roller 122 is assembled into the sleeve 121, the first annular grooves 126 and the first annular protrusions 125 cooperate to position the nylon roller 122 in the axial direction of the sleeve 121, reducing the movement and displacement of the nylon roller 122 in the axial direction of the sleeve 121, and thus reducing the noise caused by collisions during operation.
[0052] Further, please refer to Figures 1-8In the embodiment, to avoid dust or sundries entering between the active surface of the nylon roller 122 and the sleeve 121 during operation, a retaining ring 113 is arranged on the inner side of the inner chain plate 123, and the end of the nylon roller 122 is located in the retaining ring 113. That is, the retaining ring 113 can be arranged on the inner chain plate 123 along the axis of the sleeve 121, and the purpose is to reduce or avoid dust or sundries entering between the active surface of the nylon roller 122 and the sleeve 121 by sleeving the retaining ring 113 on the outer end surface of the nylon roller 122, thereby reducing the noise of the nylon roller 122.
[0053] Based on the above, please refer to Figures 1-8 The embodiment also provides an escalator, which comprises a driving unit, a plurality of steps, and the step chain 100 described above; the driving unit is in transmission connection with the step chain 100, and the step chain 100 is in transmission connection with all the steps, and each step corresponds to four pitches of the step chain 100.
[0054] In summary, the escalator can effectively reduce the running noise by adopting the step chain 100 described above, and the manufacturing and using costs are low.
[0055] It should be noted that in the embodiment, the mode that each step corresponds to four pitches of the step chain 100 is adopted, and the purpose of such a setting mode is to increase the number of chain links contained in each step pitch length.
[0056] Compared with the mode that each step pitch length of the conventional step chain 100 contains three chain links, the embodiment makes the step correspond to four pitches of the step chain 100, and thus increases the three chain links contained in each step pitch length to four chain links under the premise of ensuring that the step pitch is unchanged, which changes the chain pitch;
[0057] From the perspective of geometric relationship, when the chain pitch becomes smaller, the shape of the chain wound on the sprocket tends to be more circular; in this case, when the chain moves on the sprocket, the fluctuation range of the speed and acceleration of the chain is relatively smaller than before, thereby reducing the polygon effect of the chain and the impact energy generated in the contact moment of the chain link and the sprocket; this is very helpful to the noise generated when the chain operates, realizes the low-noise operation of the chain, improves the use experience of passengers and the quality and image of the escalator equipment, and reduces the noise pollution to the surrounding environment.
[0058] In summary, the step chain 100 and the escalator provided in the embodiment have the following advantages:
[0059] 1. Improving user experience: passengers can be provided with a more quiet and comfortable environment, and the noise interference and discomfort of people are reduced.
[0060] 2. Reduced maintenance costs: Lower noise typically means that the chain runs more smoothly, with a relatively lower chance of wear and tear, thus reducing the frequency and cost of maintenance and repairs.
[0061] 3. Enhanced environmental friendliness: Reducing noise helps to reduce sound pollution to the surrounding environment, in line with environmental requirements, especially in areas with strict noise restrictions.
[0062] 4. Improved running stability: Smooth and quiet running often reflects better coordination and stability of the chain in the transmission process, helping to ensure the normal operation of the steps and reduce the risk of accidents.
[0063] 5. Prolonged service life: As a result of reducing noise-induced vibration and impact, the stress on the chain components is more uniform, effectively prolonging the service life of the chain.
[0064] 6. Improved overall quality of the equipment: Low noise is a manifestation of the high quality and high performance of the escalator chain 100, helping to improve the quality and image of the entire escalator equipment.
[0065] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A ladder chain, characterized in that: The ladder chain includes multiple outer links and multiple inner links; The outer link includes two outer link plates and a pin, with both ends of the pin connected to the two outer link plates respectively; The inner link includes a sleeve, a nylon roller, and two inner link plates. The two ends of the sleeve are respectively connected to the two inner link plates, and the sleeve is sleeved on the pin. The nylon roller is sleeved on the sleeve. The inner circumferential surface of the nylon roller is provided with multiple first annular protrusions; the outer circumference of the sleeve is provided with multiple first annular grooves; each first annular groove corresponds to a first annular protrusion.
2. The ladder chain according to claim 1, characterized in that: The nylon roller has arc-shaped surfaces at both ends along its axial direction.
3. The ladder chain according to claim 1, characterized in that: Multiple first annular protrusions are spaced apart along the axial direction of the nylon roller, and multiple first annular grooves are spaced apart along the axial direction of the sleeve.
4. The ladder chain according to claim 1, characterized in that: The outer periphery of the sleeve is provided with multiple second annular protrusions, which are spaced apart along the axial direction of the sleeve. Each of the first annular protrusions corresponds to a region between two adjacent second annular protrusions.
5. The ladder chain according to claim 1, characterized in that: The inner circumferential surface of the nylon roller is provided with an annular positioning groove; the outer circumference of the sleeve is provided with an annular positioning protrusion that positions and cooperates with the annular positioning groove.
6. The ladder chain according to claim 5, characterized in that: The annular positioning groove is located in the middle of the nylon roller, and the annular positioning protrusion is located in the middle of the sleeve.
7. The ladder chain according to any one of claims 1-6, characterized in that: A retaining ring is provided on the inner side of the inner chain plate, and the end of the nylon roller is located inside the retaining ring.
8. An escalator, characterized in that: The escalator includes a drive unit, multiple steps, and a step chain as described in any one of claims 1-7; The drive unit is connected to the ladder chain drive, and the ladder chain is connected to all the ladder drives, with each ladder corresponding to four pitches of the ladder chain.