Multi-turn winding traction sheave structure

Abstract

A multi-turn winding traction sheave structure comprises a sheave with traction rope grooves on its surface, a main shaft connection hole disposed in the center of the sheave, and a bearing mounting hole coaxial with and connected to the main shaft connection hole. A load-bearing bearing is mounted in the bearing mounting hole, and the exposed portion of the load-bearing bearing is matingly connected to an external support bearing. The external support bearing is connected to a bearing seat that can be connected to a traction machine frame. This invention reduces the effects of main shaft bending deformation while maintaining a constant traction sheave axle ratio, thereby extending the service life of the traction machine and elevator.

Description

Technical Field

[0001] The invention relates to a multi-turn winding traction wheel structure and belongs to the field of lifting equipment. Background Art

[0002] The wire rope is an important component of the elevator traction system. When the elevator is overloaded or the friction coefficient between the wire rope and the traction sheave becomes smaller, the wire rope is prone to slipping and the elevator operation stability is poor.

[0003] Some have proposed wrapping each wire rope multiple times around the traction sheave to increase the friction area and overcome the problem of wire rope slippage. Patent application number CN201921266077.8 discloses this wire rope winding method. To ensure the lifespan and performance of the wire rope, each wire rope turn must not interfere with each other. This necessitates a spiral groove for mounting the wire rope on the traction sheave. This requires a long axial length for the traction sheave, which can easily cause the main shaft used to mount the traction sheave to bend and deform.

[0004] To prevent the main shaft from deforming, the commonly used method at present is to increase the diameter of the main shaft and improve the main shaft's ability to resist deformation. However, this will cause the traction sheave axle ratio to decrease, resulting in the traction machine requiring a larger output to make the traction sheave rotate, that is, the traction machine energy consumption increases. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a multi-turn winding traction sheave structure, which reduces the bending deformation effect on the main shaft while keeping the traction sheave axle ratio unchanged, thereby increasing the service life of the traction machine and the elevator.

[0006] A multi-turn winding traction wheel structure includes a wheel body with a traction rope groove on the surface, a main shaft connecting hole is provided at the center of the wheel body, and also includes a bearing mounting hole coaxial with and connected to the main shaft connecting hole. A load-bearing bearing is assembled in the bearing mounting hole, and the load-bearing bearing is exposed from the bearing mounting hole and the exposed part is cooperated with the external support bearing, and the external support bearing is connected to a bearing seat that can be connected to the traction frame.

[0007] Preferably, the load-bearing bearing includes a conical bearing portion located in the bearing mounting hole and a columnar bearing portion located outside the bearing mounting hole, the conical bearing portion has a bearing outer ring portion 1 and a bearing inner ring portion 1, the columnar bearing portion includes a bearing outer ring portion 2 and a bearing inner ring portion 2, the bearing outer ring portion 1 has a conical load-bearing surface, the bearing outer ring portion 1 is connected to the bearing outer ring portion 2 as a whole, the bearing inner ring portion 1 is connected to the bearing inner ring portion 2 as a whole, and the bearing outer ring portion 2 is matched with the external support bearing.

[0008] Preferably, the outer ring portion of the bearing is matched and connected with the bearing mounting hole.

[0009] Preferably, the outer ring of the bearing is connected to the bearing mounting hole through a bearing assembly, wherein the bearing assembly includes a plurality of conical bearings coaxially arranged and arranged sequentially from the inside to the outside, the conical bearing includes a bearing outer ring and a bearing inner ring, the bearing outer ring has an outer connecting conical surface, and the bearing inner ring has an inner connecting conical surface;

[0010] The outermost tapered bearing has an outer connecting tapered surface that is matched and connected with the bearing mounting hole; the bearing mounting hole is a tapered hole;

[0011] In any two adjacent tapered bearings, the outer connecting tapered surface of the inner tapered bearing and the inner connecting tapered surface of the outer tapered bearing are matched and connected;

[0012] The inner connecting conical surface of the innermost tapered bearing is matched and connected with the outer ring portion of the bearing.

[0013] Preferably, the wheel body includes a wheel main body component having a traction rope groove, and a transmission component connected to the wheel main body component and having a main shaft connecting hole.

[0014] Preferably, the transmission component axially covers the large-diameter opening of the bearing mounting hole.

[0015] Preferably, the outer support bearing and the wheel body are located on both sides of the bearing seat. In summary, the present invention has the following beneficial effects:

[0016] 1: The present invention reduces the influence of bending deformation on the main shaft while keeping the traction sheave axle ratio unchanged, thereby increasing the service life of the traction machine and the elevator.

[0017] 2: The present invention, by providing a bearing assembly, can transmit the pressure transmitted from the wheel body to the main shaft with a smaller force after multiple transmissions, thereby further reducing the deformation of the main shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the first traction sheave structure;

[0019] Figure 2 This is a schematic diagram of the structure of the second traction wheel structure. DETAILED DESCRIPTION

[0020] The present invention will be further described below through specific embodiments with reference to the accompanying drawings.

[0021] Example:

[0022] A multi-turn winding traction wheel structure includes a wheel body 1 with traction rope grooves on the surface. The traction rope grooves are spiral rope grooves distributed on the surface of the wheel body 1. The number of traction rope grooves and wire ropes is equal. A main shaft connection hole 11 is provided in the center of the wheel body 1. The main shaft connection hole 11 is used to connect to the traction machine main shaft 0-1. The two can be connected by a key. These are all existing technologies.

[0023] Different from the prior art, this embodiment further includes a bearing mounting hole 12 that is coaxial with and connected to the main shaft connecting hole 11. The bearing mounting hole 12 is recessed inward from the axial end surface of the wheel body 1. A load-bearing bearing 2 is installed in the bearing mounting hole 12. The load-bearing bearing 2 is installed on the main shaft 0-1, and its inner ring rotates as the main shaft 0-1 rotates. The load-bearing bearing 2 is exposed from the bearing mounting hole 12, and the outer ring of the exposed part is matched with the outer support bearing 3. The outer ring of the exposed part is specifically matched with the inner ring of the outer support bearing 3. The outer support bearing 3 is connected to a bearing seat 4. The bearing seat 4 is used to install and support the outer support bearing 3. The bearing seat 4 is used to be connected to a traction frame 0-2 that is strong enough and not easy to deform.

[0024] The traction sheave structure in this technical solution is jointly loaded by the load-bearing bearing 2 and the main shaft 0-1, bearing the weight of the wheel body 1 and the weight of the car suspended on the wheel body 1 by the wire rope. That is, the load-bearing bearing 2 shares the load of the main shaft 0-1, reduces the pressure exerted by the wheel body 1 on the main shaft 0-1, reduces the bending of the main shaft, and improves the service life of the traction machine and the elevator. At the same time, the wheel-axle ratio of the traction sheave remains basically unchanged, and the energy consumption of the traction machine remains basically unchanged.

[0025] The load bearing 2 can be attached Figure 1 In the ordinary bearing, when the main shaft 0-1 drives the wheel body 1 to rotate, the outer ring of the load-bearing bearing 2 also rotates. At the same time, the outer ring of the load-bearing bearing 2 also rotates on the inner ring of the outer support bearing 3.

[0026] Of course, since the load-bearing bearing 2 will also transmit force to the main shaft 0-1, for this reason, the load-bearing bearing 2 can also be used as shown in the attached Figure 2The special bearing, specifically, the load-bearing bearing 2 includes a conical bearing portion 21 located in the bearing mounting hole 12, and a columnar bearing portion 22 located outside the bearing mounting hole 12. The conical bearing portion 21 has a bearing outer ring portion 211 and a bearing inner ring portion 212. Bearing balls are arranged between the bearing outer ring portion 211 and the bearing inner ring portion 212. The bearing outer ring portion 211 has a conical load-bearing surface. The conical load-bearing surface can transmit the pressure from the wheel body 1 in the form of a component force. The force transmitted to the main shaft 0-1, that is, the force transmitted to the main shaft 0-1 is smaller, and the main shaft 0-1 is less likely to deform; the columnar bearing part 22 is the part where the load-bearing bearing 2 is actually connected to the outer support bearing 3, which includes the second outer ring part 221 of the bearing and the second inner ring part 222 of the bearing. The first outer ring part 211 of the bearing is connected to the second outer ring part 221 of the bearing, and the first inner ring part 212 of the bearing is connected to the second inner ring part 222 of the bearing. The second outer ring part 221 of the bearing is connected to the outer support bearing 3.

[0027] The bearing outer ring portion 211 can be directly matched with the bearing mounting hole 12, and the bearing mounting hole 12 is a tapered hole. This matching connection method is not shown in the drawings. In this embodiment, the bearing outer ring portion 211 is matched with the bearing mounting hole 12 through a bearing assembly, wherein the bearing assembly includes a plurality of tapered bearings 5 ​​arranged coaxially and arranged in sequence from the inside to the outside, and the tapered bearings 5 ​​each include a bearing outer ring 51 and a bearing inner ring 52. The bearing outer ring 51 has an outer connecting tapered surface, and the bearing inner ring 52 has an inner connecting tapered surface; the outermost tapered bearing 5 has an outer connecting tapered surface connected to the bearing mounting hole 12. The holes 12 are matched and connected, and the bearing mounting hole 12 is a tapered hole; in any two adjacent tapered bearings 5 ​​inside and outside, the outer connecting conical surface of the inner tapered bearing 5 and the inner connecting conical surface of the outer tapered bearing 5 are matched and connected; the innermost tapered bearing 5, its inner connecting conical surface is matched and connected with the outer ring portion 211 of the bearing. In such a bearing assembly, when the outer component transmits force to the inner component, it is transmitted to the inner component in the form of a component force. Therefore, the pressure transmitted from the wheel body 1 is transmitted to the main shaft 0-1 with a smaller force after multiple transmissions, further reducing the deformation of the main shaft.

[0028] Because the bearing mounting hole 12 is a tapered hole, and considering the actual installation of the bearing assembly and the load-bearing bearing 2, in this embodiment, the wheel body 1 includes a wheel main body component 15 having a traction rope groove, and a transmission component 16 having a main shaft connection hole 11 connected to the wheel main body component 15. The transmission component 16 is connected to the wheel main body component 15 through a plurality of fasteners 13. The transmission component 16 can rotate the wheel main body component 15, thereby ensuring the basic requirement of driving the wire rope. The transmission component 16 axially covers the large diameter opening of the bearing mounting hole 12. In this way, the transmission component 16 restricts the bearing assembly and the load-bearing bearing 2 in the bearing mounting hole 12. When the bearing assembly and the load-bearing bearing 2 are installed, the transmission component 16 is in a disassembled state. Preferably, the fastener 13 is a bolt fastener, which includes a bolt and a nut. The bolt passes through the transmission component 16 and the wheel main body component 15.

[0029] In order to enhance the strength of the transmission component 16 and prevent the transmission component 16 from axial deformation, a thickened portion 14 is connected to the axial side surface of the transmission component 16 .

[0030] The outer support bearing 3 and the wheel body 1 are located on both sides of the traction frame 0-2.

[0031] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Any modifications and improvements to the technical solution of the present invention made by a person of ordinary skill in the art without departing from the design concept of the present invention shall fall within the scope of protection of the present invention. The technical content for which protection is sought in the present invention is fully set forth in the claims.

Claims

1. A multi-turn winding traction wheel structure, comprising a wheel body (1) having traction rope grooves on its surface, a main shaft connecting hole (11) being provided at the center of the wheel body (1), characterized in that: It also includes a bearing mounting hole (12) coaxial with and connected to the main shaft connecting hole (11), a load-bearing bearing (2) is mounted in the bearing mounting hole (12), the load-bearing bearing (2) is exposed from the bearing mounting hole (12), and the exposed portion is cooperatively connected to an external support bearing (3), and the external support bearing (3) is connected to a bearing seat (4) that can be connected to the traction frame; The load-bearing bearing (2) includes a conical bearing portion (21) located in the bearing mounting hole (12) and a columnar bearing portion (22) located outside the bearing mounting hole (12), wherein the conical bearing portion (21) includes a bearing outer ring portion (211) and a bearing inner ring portion (212), and the columnar bearing portion (22) includes a bearing outer ring portion (221) and a bearing inner ring portion (222), wherein the bearing outer ring portion (211) has a conical load-bearing surface, the bearing outer ring portion (211) and the bearing outer ring portion (221) are connected as a whole, the bearing inner ring portion (212) and the bearing inner ring portion (222) are connected as a whole, and the bearing outer ring portion (221) and the outer support bearing (3) are connected in a matching manner. The bearing outer ring portion (211) is connected to the bearing mounting hole (12) through a bearing assembly, wherein the bearing assembly includes a plurality of conical bearings (5) coaxially arranged and arranged sequentially from the inside to the outside, the conical bearing (5) including a bearing outer ring (51) and a bearing inner ring (52), the bearing outer ring (51) having an outer connecting conical surface, and the bearing inner ring (52) having an inner connecting conical surface; The outermost tapered bearing (5) has an outer connecting tapered surface that is matched and connected to the bearing mounting hole (12); the bearing mounting hole (12) is a tapered hole; In any two adjacent tapered bearings (5) located inside and outside, the outer connecting tapered surface of the inner tapered bearing (5) and the inner connecting tapered surface of the outer tapered bearing (5) are matched and connected; The innermost conical bearing (5) has an inner connecting conical surface that is matched and connected with the outer ring portion (211) of the bearing.

2. The multi-turn winding traction sheave structure according to claim 1, characterized in that: The bearing outer ring portion 1 (211) is matched and connected with the bearing mounting hole (12).

3. The multi-turn winding traction sheave structure according to claim 2, characterized in that: The wheel body (1) comprises a wheel main body component (15) having a traction rope groove, and a transmission component (16) connected to the wheel main body component (15) and having a main shaft connection hole (11).

4. The multi-turn winding traction sheave structure according to claim 3, characterized in that: The transmission component (16) axially covers the large-diameter opening of the bearing mounting hole (12).

5. The multi-turn winding traction sheave structure according to claim 3, characterized in that: The axial side surface of the transmission component (16) is connected to a thickened portion (14).

6. The multi-turn winding traction sheave structure according to claim 1, characterized in that: The outer support bearing (3) and the wheel body (1) are located on both sides of the bearing seat (4).

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