Machine room-less ultra-thin traction machine

Abstract

The utility model discloses an inorganic room ultra -thin tractor, it includes frame, pivot, tractor wheel, stator, rotor, the frame is provided with the motor ring cavity for placing stator, the rotor sets up the outside of stator, the rotor with tractor wheel with pivot is connected, one end of pivot is provided with front support seat, and pivot is connected with frame and front support seat respectively through first bearing and second bearing, and the end of pivot is provided with encoder and end cover, and end cover is connected with front support seat, and the encoder code disc of encoder is connected with the end of pivot, and the encoder reading head of encoder is connected with end cover. The utility model not only plays the effective protection effect to encoder, still makes the compactness of encoder whole axial dimension more, further reduces the volume of tractor and the size space required for installation, improves the space utilization, has realized the super thin and miniaturization.

Description

Technical Field

[0001] This utility model relates to the field of traction machines, and in particular to an ultra-thin traction machine without a machine room. Background Technology

[0002] Machine-room-less elevators are widely used due to their advantages such as saving building space and reducing construction costs. As the core drive component of the elevator, the size and structure of the traction machine directly affect the layout of the machine-room-less elevator. An ultra-thin traction machine is key to achieving a compact machine-room-less layout. As the core component for speed detection and position feedback of the traction machine, the encoder's installation method significantly impacts the overall size, reliability, and ease of maintenance of the traction machine. Traditional encoder installation methods often occupy a large space, which is not conducive to the thin design of the traction machine, and requires the disassembly of many parts during maintenance and replacement, making the operation cumbersome. Therefore, there is an urgent need for a compact traction machine structure that can significantly reduce the axial installation size while facilitating encoder maintenance and replacement. Utility Model Content

[0003] The purpose of this invention is to provide a machine room-less ultra-thin traction machine that can solve or partially solve the above-mentioned problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A machine room-less ultra-thin traction machine includes a base, a rotating shaft, a traction sheave, a stator, and a rotor. The base has a motor annular cavity for housing the stator. The rotor is disposed outside the stator and is connected to the traction sheave and the rotating shaft. One end of the rotating shaft is provided with a front support seat. The rotating shaft is connected to the base and the front support seat respectively through a first bearing and a second bearing. An encoder and an end cover are provided at the end of the rotating shaft. The end cover is connected to the front support seat. The encoder code disk of the encoder is connected to the end of the rotating shaft, and the encoder read head of the encoder is connected to the end cover.

[0006] Preferably, the rotor includes a first rotor portion disposed within the motor annular cavity and outside the stator, a second rotor portion disposed outside the frame, and a third rotor portion. The traction sheave is sleeved on the second rotor portion, the third rotor portion is connected to the rotating shaft, a rotor annular cavity is formed between the second rotor portion and the third rotor portion, and the front support seat is disposed within the rotor annular cavity.

[0007] Preferably, the first bearing and the second bearing are respectively disposed at both ends of the rotating shaft, the first bearing is disposed between the rotating shaft and the machine base, and the second bearing is disposed between the third rotor section and the front support seat.

[0008] Preferably, the end of the rotating shaft is provided with a stepped portion, and the encoder disk is disposed on the stepped portion.

[0009] Preferably, the connection between the front support and the end cover is recessed inward to form a recessed area, and the encoder reading head is disposed in the recessed area.

[0010] Preferably, the encoder read head is positioned to cooperate with the encoder code disk, and a gap is provided between the encoder read head and the encoder code disk.

[0011] The beneficial effects of this utility model are as follows: The connection between the front support and the end cover is recessed inward to form a recessed area, within which the encoder reading head is placed, and the encoder reading head does not protrude above the front support. This layout not only effectively protects the encoder but also makes the overall axial dimensions of the encoder more compact, further reducing the volume of the traction machine and the required installation space, improving space utilization, and achieving ultra-thin and miniaturized design. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 yes Figure 1 A magnified schematic diagram of the structure of part A in the diagram;

[0014] The components include: base 1, shaft 2, stepped section 21, traction sheave 3, stator 4, rotor 5, first rotor section 51, second rotor section 52, third rotor section 53, rotor annular cavity 54, motor annular cavity 6, front support seat 7, first bearing 8, second bearing 9, encoder 10, encoder code disk 101, encoder reading head 102, and end cover 11. Detailed Implementation

[0015] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0016] In the description of this utility model, it should be noted that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] like Figures 1 to 2As shown, this utility model provides a machine room-less ultra-thin traction machine, which includes a base 1, a rotating shaft 2, a traction sheave 3, a stator 4, and a rotor 5. The base 1 has a motor annular cavity 6 for housing the stator 4. The rotor 5 includes a first rotor portion 51 disposed within the motor annular cavity 6 and outside the stator 4, a second rotor portion 52 disposed outside the base 1, and a third rotor portion 53. The traction sheave 3 is sleeved on the second rotor portion 52, and the third rotor portion 53 is connected to the rotating shaft 2. A rotor annular cavity 54 is formed between the second rotor portion 52 and the third rotor portion 53, and a front support seat 7 is disposed within the rotor annular cavity 54, saving overall volume space. The two ends of the rotating shaft 2 are connected to the base 1 and the front support seat 7 respectively via a first bearing 8 and a second bearing 9. The first bearing 8 and the second bearing 9 are respectively disposed at the two ends of the rotating shaft 2, with the first bearing 8 disposed between the rotating shaft 2 and the base 1, and the second bearing 9 disposed between the third rotor portion 53 and the front support seat 7.

[0018] Furthermore, an encoder 10 and an end cover 11 are provided at the end of the rotating shaft 2, and the end cover 11 is connected to the front support 7. The encoder disk 101 of the encoder 10 is connected to the end of the rotating shaft 2 and rotates with the rotating shaft 2. The end of the rotating shaft 2 is provided with a stepped portion 21, and the encoder disk 101 is disposed on the stepped portion 21. The encoder read head 102 of the encoder 10 is connected to the end cover 11, and the end cover 11 is connected to the front support 7, which can reduce the radial misalignment between the encoder read head 102 and the encoder disk 101.

[0019] The encoder read head 102 is positioned to mate with the encoder code disk 101, and a gap is provided between the encoder read head and the encoder code disk. A certain range of axial movement is allowed between the encoder code disk 101 and the encoder read head 102 without affecting the accuracy of the encoder 10 measurement. When replacing the encoder, there is no need to disassemble the support base; only the end cover 11 and the encoder read head 102 need to be removed. Installing and removing the encoder 10 is relatively convenient.

[0020] Furthermore, the connection between the front support 7 and the end cover 11 is recessed inward to form a recessed area 12. The encoder reading head 102 is located in the recessed area 12 and does not protrude from the front support 7, which can effectively protect the encoder 10. The overall axial dimension of the encoder 10 is compact, which helps to reduce the size of the traction machine and the required installation space.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A machine room-less ultra-thin traction machine, comprising a base, a rotating shaft, a traction sheave, a stator, and a rotor, characterized in that: The base has a motor annular cavity for housing the stator. The rotor is disposed outside the stator and is connected to the traction sheave and the shaft. One end of the shaft is provided with a front support seat. The shaft is connected to the base and the front support seat via a first bearing and a second bearing, respectively. An encoder and an end cover are provided at the end of the shaft. The end cover is connected to the front support seat. The encoder disk of the encoder is connected to the end of the shaft, and the encoder read head of the encoder is connected to the end cover.

2. The machine room-less ultra-thin traction machine according to claim 1, characterized in that: The rotor includes a first rotor section disposed within the motor annular cavity and outside the stator, a second rotor section disposed outside the frame, and a third rotor section. The traction sheave is sleeved on the second rotor section, the third rotor section is connected to the rotating shaft, a rotor annular cavity is formed between the second rotor section and the third rotor section, and the front support seat is disposed within the rotor annular cavity.

3. The machine room-less ultra-thin traction machine according to claim 2, characterized in that: The first bearing and the second bearing are respectively disposed at both ends of the rotating shaft. The first bearing is disposed between the rotating shaft and the machine base, and the second bearing is disposed between the third rotor section and the front support seat.

4. The machine room-less ultra-thin traction machine according to claim 1, characterized in that: The end of the rotating shaft is provided with a stepped portion, and the encoder code disk is disposed on the stepped portion.

5. The machine room-less ultra-thin traction machine according to claim 4, characterized in that: The connection between the front support and the end cover is recessed inward to form a recessed area, and the encoder reading head is disposed in the recessed area.

6. The machine room-less ultra-thin traction machine according to claim 5, characterized in that: The encoder read head is positioned to cooperate with the encoder code disk, and a gap is provided between the encoder read head and the encoder code disk.

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