Novel escalator upper chain wheel structure
By opening cross notches on the step sprocket of the upper sprocket of the escalator and using the cut cross notches instead of the original wheel hub, the problems of high material utilization and processing costs in the prior art are solved, and the material utilization rate is improved, cost reduction and weight reduction are achieved, while maintaining the stability of transmission performance.
Patent Information
- Application Number
- CN202422085464.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The existing escalator upper sprocket structure has a lot of room for improvement in material utilization and processing costs, resulting in higher manufacturing costs.
By opening cross notches on the step sprocket and replacing the original hub with cut cross notches, efficient material utilization and cost reduction are achieved.
It achieves improvement in material utilization, reduction in cost, and reduction in weight, and maintains the stability of transmission performance.
Smart Images
Figure CN222907253U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of escalator component processing, and particularly relates to a novel upper sprocket structure of an escalator. Background Technique
[0002] At present, in the current manufacturing field, the material cost accounts for 30%-50% of the overall product cost, and its proportion is close to half of the product cost. Therefore, how to effectively reduce costs and improve the utilization rate of materials has become the top priority in the current manufacturing industry. Especially in the field of escalator manufacturing, as an important part of the escalator, the material use and processing cost of the upper sprocket directly affect the manufacturing cost of the entire escalator.
[0003] The conventional upper sprocket structure of an escalator includes a driving main shaft, a hub and a step sprocket, and the axes of the three coincide. Among them, the driving main shaft is fixedly connected to the hub, and a step sprocket is fixedly connected to each hub. Other components (such as a driving sprocket, a ratchet, etc.) are connected to the step sprocket. In the traditional design, the hub is generally processed separately, and the step sprocket is lightened by opening circular holes when conditions permit. However, there is still great room for improvement in material utilization rate and processing cost in this design.
[0004] Therefore, in view of the deficiencies of the above-mentioned solutions in actual production and implementation, they are corrected and improved. At the same time, in the spirit of seeking excellence and with the assistance of professional knowledge and experience, and after various ingenious ideas and tests, the present utility model is created. A novel upper sprocket structure of an escalator is provided to solve the above technical problems. Content of the Utility Model
[0005] The utility model provides a novel upper sprocket structure of an escalator, which improves the material utilization rate and reduces the manufacturing cost by improving the step sprocket structure in the upper sprocket of the escalator.
[0006] The technical solution of the utility model is realized as follows: A novel upper sprocket structure of an escalator includes a driving main shaft, hubs are respectively connected to both ends of the driving main shaft, step sprockets are respectively connected to each hub, a cross slot is opened on the surface of the step sprocket, the shape of the hub is the same as that of the cross slot, and the hub is fixedly connected to the surface of the step sprocket. By opening a cross slot on the step sprocket, the purpose of lightening the step sprocket is achieved. After installing the lightened step sprocket on the upper sprocket structure of the escalator, the overall upper sprocket structure of the escalator simultaneously achieves the effects of weight reduction and cost reduction.
[0007] As a preferred embodiment, the hub is a cross-notch piece formed when a cross-notch is opened on the step sprocket body. The cross-notch piece can fit into the cross-notch, and a gap is formed between the outer peripheral portion of the cross-notch piece and the inner wall of the cross-notch. When the cross-notch is opened on the step sprocket body, the cross-notch piece cut off is further polished to replace the hub that originally needs to be processed separately, thereby greatly improving material utilization and achieving the purpose of reducing costs and increasing efficiency.
[0008] As a preferred embodiment, the cross slot includes a vertical slot and a flat slot perpendicular to each other, the hub includes a first body and a second body perpendicular to each other, and two ends of the first body and the second body are respectively located between two adjacent vertical slots and flat slots.
[0009] As a preferred embodiment, an arc-shaped first transition section is formed between two adjacent vertical grooves and flat grooves, and an arc-shaped second transition section is formed between two adjacent first bodies and second bodies. The two ends of the first body and the second body are respectively fixedly connected to the first transition section, and the ends of the vertical groove and the flat groove correspond to the second transition section respectively.
[0010] As a preferred embodiment, the center line of the first body located between two adjacent vertical grooves and the flat groove is at a 45° angle to the center line of the vertical groove and the flat groove, respectively. The cross groove part that originally needed to be discarded is reused as the wheel hub, thereby improving the overall utilization rate of the material and reducing resource waste.
[0011] As a preferred embodiment, the vertical groove and the flat groove have the same length, and the first body and the second body have the same length.
[0012] As a preferred implementation, the hub is located on a side of the step sprocket away from the transmission main shaft, and the surface of the hub is in conflict with the surface of the step sprocket.
[0013] As a preferred implementation, the axis of the step sprocket coincides with the axis of the hub, so that its transmission performance is not affected and it can still operate stably and reliably.
[0014] After adopting the above technical solution, the beneficial effects of the utility model are:
[0015] 1. Cost reduction: By opening a cross notch on the step sprocket, the amount of material used is reduced, and the manufacturing cost is reduced. The cut cross notch piece can be directly used as a hub, thus saving the cost of processing the hub separately;
[0016] 2. Improved material utilization: The cross slot parts that were originally discarded are reused as wheel hubs, which improves material utilization and reduces resource waste;
[0017] 3. Weight reduction: After the cross-notch is opened, the weight of the step sprocket body is significantly reduced, thus reducing the overall weight of the upper sprocket structure of the escalator and lowering the energy consumption.
[0018] 4. Transmission performance maintained: Although the step sprocket has a weight reduction design, its transmission performance is not affected and it can still operate stably and reliably. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0020] Figure 1 It is a schematic structural diagram of the cost reduction structure of the upper sprocket of the escalator applied in the present invention;
[0021] Figure 2 It is an overall schematic diagram of the cost reduction structure of the upper sprocket of the escalator in the present invention;
[0022] Figure 3 It is a schematic structural diagram of the connection between the hub and the step sprocket;
[0023] Figure 4 It is a schematic structural diagram of the cross-notch formed on the surface of the step sprocket to form a cross-notch part;
[0024] In the figure, 1 - drive main shaft; 2 - hub; 21 - first body; 22 - second body; 23 - second transition section; 3 - step sprocket; 4 - cross-notch; 41 - vertical groove; 42 - flat groove; 43 - first transition section; 5 - cross-notch part. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0026] As Figure 1 - Figure 2As shown in the figure, a new upper sprocket structure of an escalator includes a driving main shaft 1. At both ends of the driving main shaft 1, hubs 2 are respectively connected. At each hub 2, a step sprocket 3 is respectively connected. A cross-notch 4 is provided on the surface of the step sprocket 3. The shape of the hub 2 is the same as that of the cross-notch 4. The hub 2 is fixedly connected to the surface of the step sprocket 3. By providing the cross-notch 4 on the step sprocket 3, the purpose of reducing the weight of the step sprocket 3 is achieved through this design. After installing the weight-reduced step sprocket 3 on the upper sprocket structure of the escalator, the overall upper sprocket structure of the escalator simultaneously achieves the effects of weight reduction and cost reduction.
[0027] By improving the structural design of the step sprocket 3, the material utilization rate is significantly increased and the manufacturing cost is reduced. The basic idea of the present utility model is to provide the cross-notch 4 on the step sprocket 3, and the effects of weight reduction and cost reduction are achieved through this design adjustment. At the same time, the cut cross-notch part 5 is used to replace the originally separately processed hub 2, thereby greatly improving the material utilization rate and achieving the purpose of cost reduction and efficiency increase.
[0028] The driving main shaft 1 is connected to the hub 2, and the hub 2 is connected to the step sprocket 3. Other components (such as a driving sprocket, a ratchet, etc.) are connected to the step sprocket 3. The structure of the step sprocket 3 is improved, and the cross-notch 4 is provided on its surface. The purpose of providing the cross-notch 4 is to reduce the weight of the step sprocket 3. At the same time, the cut cross-notch part 5 (as Figure 3 shown) can be used as a substitute for the hub 2, thereby achieving material conservation and improvement of utilization efficiency.
[0029] Combined with Figure 3 , the cross-notch 4 includes a vertical groove 41 and a flat groove 42 that are perpendicular to each other. The hub 2 includes a first body 21 and a second body 22 that are perpendicular to each other. The two ends of the first body 21 and the second body 22 are respectively located between adjacent two sections of the vertical groove 41 and the flat groove 42. An arc-shaped first transition section 43 is formed between adjacent two sections of the vertical groove 41 and the flat groove 42. An arc-shaped second transition section 23 is formed between adjacent two sections of the first body 21 and the second body 22. The two ends of the first body 21 and the second body 22 are respectively fixedly connected to the first transition section 43. The end parts of the vertical groove 41 and the flat groove 42 respectively correspond to the second transition section 23.
[0030] The center line of the first body 21 between the two adjacent vertical grooves 41 and the flat groove 42 is at a 45° angle to the center line of the vertical groove 41 and the center line of the flat groove 42, respectively. The cross groove piece 5 that was originally required to be discarded is reused as the hub 2, which improves the overall utilization rate of the material and reduces resource waste. The lengths of the vertical grooves 41 and the flat grooves 42 are the same, and the lengths of the first body 21 and the second body 22 are the same. The hub 2 is located on the side of the step sprocket 3 away from the transmission main shaft 1, and the surface of the hub 2 conflicts with the surface of the step sprocket 3. The axis of the step sprocket 3 coincides with the axis of the hub 2, so that its transmission performance is not affected and it can still operate stably and reliably.
[0031] Combination Figure 4 The hub 2 is a cross notch piece 5 formed when a cross notch 4 is opened on the step sprocket 3 body. The cross notch piece 5 can fit into the cross notch 4. A gap is formed between the outer peripheral portion of the cross notch piece 5 and the inner wall of the cross notch 4. When the cross notch 4 is opened on the step sprocket 3 body, the cross notch piece 5 cut off is further polished to replace the hub 2 that originally needs to be processed separately, thereby greatly improving the material utilization rate and achieving the purpose of reducing costs and increasing efficiency.
[0032] Select 22mm thick Q235B as the raw material of the step sprocket 3, and process it into a preliminary shape through a plasma cutting process; open a cross slot 4: cut a cross slot 4 on the surface of the step sprocket 3 through a plasma cutting machine, and process it into a preliminary shape; process the cross piece: perform secondary processing on the cut cross slot piece 5 to make it meet the size requirements of the hub 2; subsequent assembly: first perform welding, annealing, fine turning and other processes on the transmission main shaft 1 and the hub 2, and then assemble them with the step sprocket 3 to ensure that the step sprockets 3 at both ends meet the synchronization requirements of the drawing and ensure the transmission performance.
[0033] The utility model achieves significant cost reduction and material utilization rate improvement by improving the sprocket structure on the upper part of the escalator. By opening a cross notch 4 on the step sprocket 3 and using the cut cross piece to replace the original wheel hub 2, not only the weight reduction effect is achieved, but also the material and processing costs are greatly reduced. The structure is simple in design, easy to implement, and has broad application prospects.
[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A novel escalator upper sprocket structure, comprising a transmission main shaft (1), wherein both ends of the transmission main shaft (1) are respectively connected to wheel hubs (2), and each of the wheel hubs (2) is respectively connected to a step sprocket (3), characterized in that: The surface of the step sprocket (3) is provided with a cross notch (4), the shape of the wheel hub (2) is the same as the cross notch (4), and the wheel hub (2) is fixedly connected to the surface of the step sprocket (3).
2. A novel escalator upper sprocket structure according to claim 1, characterized in that: The wheel hub (2) is a cross notch piece (5) formed at a cross notch (4) provided on the step sprocket (3); the cross notch piece (5) can fit into the cross notch (4); a gap is formed between an outer peripheral portion of the cross notch piece (5) and an inner wall of the cross notch (4).
3. A novel escalator upper sprocket structure according to claim 1, characterized in that: The cross notch (4) comprises a vertical groove (41) and a flat groove (42) which are perpendicular to each other, and the wheel hub (2) comprises a first body (21) and a second body (22) which are perpendicular to each other, and two ends of the first body (21) and the second body (22) are respectively located between two adjacent sections of the vertical groove (41) and the flat groove (42).
4. A novel escalator upper sprocket structure according to claim 3, characterized in that: An arc-shaped first transition section (43) is formed between two adjacent sections of the vertical groove (41) and the flat groove (42), and an arc-shaped second transition section (23) is formed between two adjacent sections of the first body (21) and the second body (22). Both ends of the first body (21) and the second body (22) are respectively fixedly connected to the first transition section (43), and the ends of the vertical groove (41) and the flat groove (42) respectively correspond to the second transition section (23).
5. A novel escalator upper sprocket structure according to claim 3, characterized in that: The midline of the portion of the first body (21) located between two adjacent vertical grooves (41) and the flat groove (42) is at an angle of 45° to the midline of the vertical groove (41) and the midline of the flat groove (42).
6. A novel escalator upper sprocket structure according to claim 3, characterized in that: The vertical groove (41) and the flat groove (42) have the same length, and the first body (21) and the second body (22) have the same length.
7. A novel escalator upper sprocket structure according to claim 2, characterized in that: The wheel hub (2) is located on a side of the step sprocket (3) away from the transmission main shaft (1), and the surface of the wheel hub (2) is in conflict with the surface of the step sprocket (3).
8. The novel escalator upper sprocket structure according to claim 1 is characterized in that: The axis center of the step sprocket (3) coincides with the axis center of the wheel hub (2).