Traction sheave for elevator equipment

Abstract

The utility model discloses a traction sheave for elevator equipment, which belongs to the technical field of elevators, is fixed on a mounting base, is connected with a main rotating shaft in the center, and comprises an inner ring, an outer ring and an end cover, a connecting section is arranged at one end, connected with the traction wheel, of the main rotating shaft, and is coaxially limited with the mounting base and the inner ring; one end of the connecting section penetrates through the mounting base and the inner ring and abuts against the end cover; the end cover is in bolted connection with the main rotating shaft; the outer ring is fixedly connected with the mounting base and comprises a plurality of groups of arc-shaped combined sheets; a plurality of hoisting rope grooves are formed in the outer side of the outer ring and are used for arranging hoisting ropes; the hoisting rope groove is of a composite rope groove structure. An annular concave platform is arranged on the outer side of the inner ring and is used for embedding the outer ring; and an arc-shaped boss is arranged on the outer side of the combined sheet and is embedded with the annular concave platform. The traction wheel has the advantages that the traction wheel is convenient to replace, and the safety of the traction wheel can be ensured.

Description

Technical Field

[0001] This utility model belongs to the field of elevator technology, and more specifically relates to a traction sheave for elevator equipment. Background Technology

[0002] Elevator equipment refers to mechanical devices used for vertical or inclined transportation of people or goods. In buildings, elevators are typically driven by electric motors, using guide rails or cable systems to raise or lower the elevator car, facilitating quick and safe movement between different floors within the building. For elevators that have been in use for a long time, excessive wear on the traction sheave grooves can cause slippage and accelerated wear on the traction steel cables, necessitating timely replacement of the traction sheave. Currently, because the traction sheave uses a one-piece structure, replacement requires stopping the elevator, then supporting the counterweight, hoisting the car, and installing the traction steel cables—a series of actions. However, elevators in densely populated areas such as shopping malls, high-rise buildings, and subway stations have very high usage rates, and stopping the elevator before replacing the traction sheave is not permitted except in special circumstances. Furthermore, quick, safe, and reliable replacement is required. Therefore, improving the replacement speed of elevator traction sheaves while ensuring safety and reliability without stopping the elevator is a problem that needs to be solved. Utility Model Content

[0003] In view of this, the present invention provides a traction sheave for elevator equipment, adopting the following technical solution:

[0004] A traction sheave for elevator equipment is fixed to a mounting base and centrally connected to a main rotating shaft. It includes an inner ring, an outer ring, and an end cap. A connecting section is provided at one end of the main rotating shaft where it connects to the traction sheave. This connecting section is coaxially positioned with the mounting base and the inner ring. One end of the connecting section passes through the mounting base and the inner ring, abutting against the end cap. The end cap is bolted to the main rotating shaft. The outer ring is fixedly connected to the mounting base. Multiple traction rope grooves are provided on the outer side of the outer ring for holding traction ropes. An annular recess is provided on the outer side of the inner ring for fitting the outer ring. An arc-shaped protrusion is provided on the outer side of the outer ring for fitting the annular recess.

[0005] Furthermore, a petal-shaped groove for connection is provided on the outer end face of the connecting segment, and petal-shaped protrusions for matching the groove are provided inside the mounting base and the inner ring; the petal-shaped protrusions and the petal-shaped groove cooperate to limit the connection segment to the mounting base and the inner ring.

[0006] Furthermore, the outer ring includes multiple sets of arc-shaped composite pieces; the multiple sets of composite pieces are provided with docking portions at both ends, and are docked end to end to form an annular outer ring.

[0007] Furthermore, the assembly piece is fixed to the mounting base by two long bolts.

[0008] Furthermore, the traction rope groove is configured as a composite rope groove structure, including a top section, an intermediate transition section, and a bottom section; the top section is the main bearing surface of the rope groove opening; the intermediate transition section is tangentially connected to the top section to connect the top section and the bottom section, thereby achieving stress gradient transition; the bottom section is smoothly connected to the intermediate transition section to form a rope groove clamping section.

[0009] The beneficial effects of this utility model are as follows:

[0010] This utility model provides a traction sheave for elevator equipment. By incorporating an outer ring composed of multiple composite pieces, both the outer and inner rings can be individually removed. This allows for partial or gradual replacement of excessively worn or damaged composite pieces without moving or disassembling the traction rope. The annular recess, arc-shaped boss, and mating portion design ensure more precise installation of the composite pieces, preventing gaps after assembly and guaranteeing the overall safety of the traction sheave. It also makes traction sheave replacement more convenient. Furthermore, the three-section composite rope groove structure increases the contact area of ​​the traction rope within the groove and disperses contact stress, resulting in better anti-slip performance of the traction sheave. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0012] Figure 1 This is a front structural diagram of the present invention.

[0013] Figure 2 for Figure 1 Sectional view of AA.

[0014] Figure 3 A schematic diagram of the main rotating shaft.

[0015] In the figure:

[0016] 1-Main shaft; 2-Mounting base; 3-Outer ring; 4-Inner ring; 5-End cap; 6-Connecting section; 7-Groove; 8-Mating part. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see the appendix Figure 1-3 This utility model provides a traction sheave for elevator equipment, which is fixed on the mounting base 2 and centrally connected to the main rotating shaft 1, including an inner ring 4, an outer ring 3 and an end cap 5;

[0019] The main shaft 1 is connected to the traction sheave at one end with a connecting section 6. The outer end face of the connecting section 6 is provided with a petal-shaped groove 7 for connection. The mounting base 2 and the inner ring 4 are both provided with petal-shaped protrusions for matching the groove 7. One end of the connecting section 6 passes through the mounting base 2 and the inner ring 4 and abuts against the end cap 5. The connecting section 6 rotates coaxially with the mounting base 2 and the inner ring 4 through the matching of the petal-shaped protrusions and the petal-shaped groove 7.

[0020] The end cap 5 is embedded in the inner ring 4 and bolted to the main rotating shaft 1; the end cap 5 is used to limit the axial movement of the mounting base 2 and the inner ring 4.

[0021] The inner ring 4 has an annular recess on its outer side for fitting the outer ring 3. The outer ring 3 includes multiple sets of arc-shaped assembly pieces. Each set of assembly pieces has a docking portion 8 at both ends, which connects to form the annular outer ring 3. The docking portion 8 can be an arc-shaped semi-circular protrusion and groove, or a toothed protrusion and groove. The outer ring has an arc-shaped boss that engages with the annular recess to limit the assembly pieces. The assembly pieces are fixed to the mounting base 2 by two long bolts, and simultaneously engage with the inner ring 4 through the arc-shaped boss and annular recess to form the traction wheel body. The outer ring 3 has multiple assembly pieces, allowing for partial or gradual replacement of excessively worn or damaged assembly pieces without moving or disassembling the traction rope. The annular recess, arc-shaped boss, and docking portion 8 ensure more precise installation of the assembly pieces, preventing gaps after assembly and guaranteeing the safety of the entire traction wheel.

[0022] Multiple traction rope grooves are provided on the outer side of the outer ring 3 for holding the traction rope. The traction rope groove is a composite groove structure, including a top section, an intermediate transition section, and a bottom section. The top section is the main bearing surface of the groove opening. The intermediate transition section is tangentially connected to the top section, connecting the top and bottom sections to achieve stress gradient transition. The bottom section is smoothly connected to the intermediate transition section, forming a groove clamping section. The three-section composite groove structure increases the contact area of ​​the traction rope in the groove and disperses contact stress.

[0023] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0024] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A traction sheave for elevator equipment, characterized in that, Fixed on the mounting base (2), with the main rotating shaft (1) connected at the center, including an inner ring (4), an outer ring (3) and an end cap (5); the main rotating shaft (1) is connected to the traction wheel at one end with a connecting section (6), the connecting section (6) is coaxially limited with the mounting base (2) and the inner ring (4); one end of the connecting section (6) passes through the mounting base (2) and the inner ring (4) and abuts against the end cap (5); the end cap (5) is bolted to the main rotating shaft (1); the outer ring (3) is fixedly connected to the mounting base (2); the outer ring (3) is provided with multiple traction rope grooves on the outside for setting traction ropes; the inner ring (4) is provided with an annular recess on the outside for fitting the outer ring (3); the outer ring (3) is provided with an arc-shaped boss on the outside for fitting the annular recess.

2. The traction sheave for elevator equipment according to claim 1, characterized in that, The outer end face of the connecting segment (6) is provided with a petal-shaped groove (7) for connection. The mounting base (2) and the inner ring (4) are both provided with petal-shaped protrusions for matching the groove (7). The petal-shaped protrusions and the petal-shaped groove (7) cooperate to limit the connection segment (6) from the mounting base (2) and the inner ring (4).

3. The traction sheave for elevator equipment according to claim 1, characterized in that, The outer ring (3) includes multiple sets of arc-shaped composite pieces; the two ends of the multiple sets of composite pieces are provided with docking parts (8), and the ends are docked to form an annular outer ring (3).

4. The traction sheave for elevator equipment according to claim 3, characterized in that, The assembly piece is fixed to the mounting base (2) by two long bolts.

5. A traction sheave for elevator equipment according to claim 1, characterized in that, The traction rope groove is configured as a composite rope groove structure, including a top section, an intermediate transition section, and a bottom section; the top section is the main bearing surface of the rope groove opening; the intermediate transition section is tangentially connected to the top section to connect the top section and the bottom section and realize stress gradient transition; the bottom section is smoothly connected to the intermediate transition section to form a rope groove clamping section.

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