Traction machine convenient to install

Abstract

The utility model discloses a traction machine convenient to install, which comprises a machine base (1), a stator core (2), a rotor shaft (3) and a traction wheel (4), one end of the machine base (1) is connected with the rotor shaft (3) through an auxiliary stress bearing (5), the other end of the machine base (1) is connected with an end cover (6), and the inner side of the end cover (6) is connected with the rotor shaft (3) through a main stress bearing (7). And one end of the rotor shaft (3) penetrates through the main stress bearing (7) and is connected with a traction wheel (4) positioned at the side part of the base (1). According to the traction machine, the stress end of the rotor shaft is supported by the end cover instead of a machine base, so that the thickness and the stress strength required by the machine base can be effectively reduced, the width size of the traction machine is reduced, and the traction machine can be suitable for the installation size of an elevator without a machine room.

Description

Technical Field

[0001] The utility model relates to a traction machine, in particular to a traction machine which is easy to install. Background Art

[0002] The current traction machine is mainly composed of a machine base, a stator, a rotor and a traction wheel, wherein the stator core is fixed in the chamber of the machine base, the rotor yoke and the magnetic steel sleeve are arranged outside the stator and connected to the rotor shaft located in the middle of the machine base; at the same time, the rotor shaft is connected to the machine base through a bearing for positioning, and drives the traction wheel to rotate. However, the structure of positioning the rotor shaft by the cooperation of the machine base and the bearing will cause the machine base to be subjected to a large radial pressure at the bearing connection position near the traction wheel end, that is, the thickness of the machine base at this connection needs to be increased to ensure its structural stability, thereby causing the overall width of the traction machine to increase. At present, the thickness of the outer side of the machine base chamber is about 460mm, and the thickness of the inner side of the machine base chamber is about 360mm; it has a high requirement for the installation space in the hoistway, and it cannot be installed and used in some elevator hoistways with smaller widths, reducing the applicability of the traction machine.

[0003] On the other hand, in order to improve the connection stability of the rotor shaft, the current traction machine needs to set the connection between the rotor shaft and the machine base at both ends of the machine base, which causes the machine base chamber to be in a relatively closed state; in this state, a large amount of heat generated by the rotor in the machine base after rotation will accumulate and cannot be dissipated, thereby causing the temperature inside the traction machine to rise rapidly, affecting the working stability and service life of the traction machine.

[0004] Therefore, the existing traction machine has the problems of large space occupation and slow heat dissipation speed. Utility Model Content

[0005] The utility model aims to provide a traction machine which is easy to install and has the characteristics of small space occupation and fast heat dissipation speed.

[0006] The technical solution of the utility model is: a traction machine which is easy to install, comprising a machine base, a stator core, a rotor shaft and a traction wheel, one end of the machine base is connected to the rotor shaft via an auxiliary force bearing, the other end of the machine base is connected to an end cover, the inner side of the end cover is connected to the rotor shaft via a main force bearing, and one end of the rotor shaft passes through the main force bearing to connect to the traction wheel located on the side of the machine base.

[0007] In the aforementioned traction machine that is easy to install, a sleeve connected to the rotor shaft is provided in the middle of the traction wheel, and a plurality of first reinforcing ribs are distributed in a ring shape on one side of the end cover, and the inner ends of the first reinforcing ribs are in contact with the outer wall of the sleeve.

[0008] In the aforementioned traction machine which is easy to install, the cross-sectional shape of the end cover is C-shaped, and a plurality of second reinforcing ribs are distributed on the side of the end cover away from the first reinforcing ribs.

[0009] In the aforementioned traction machine that is easy to install, the exterior of the end cover is interlocked with the machine base via a stepped surface.

[0010] In the aforementioned traction machine that is easy to install, the machine base, the end cover and the traction wheel are fitted in sequence, and a blocking cover is connected to the end of the rotor shaft, and one side of the blocking cover is fitted to the traction wheel.

[0011] In the aforementioned traction machine which is easy to install, an annular core chamber is provided on one side of the machine base, and the cross-sectional shape of the core chamber is U-shaped. The stator core is sleeved on the inner ring of the core chamber, and the outside of the stator core is connected to a magnetic steel, and the outside of the magnetic steel is connected to a rotor yoke, and the end of the rotor yoke passes through one side of the machine base and is connected to the rotor shaft.

[0012] In the aforementioned traction machine which is easy to install, the rotor yoke is provided with an inner ring body with an L-shaped cross section at the connection between the rotor yoke and the rotor shaft, and the inner ring body has a plurality of heat sinks distributed in an annular shape on the side facing the core chamber.

[0013] In the aforementioned traction machine which is easy to install, a junction box is connected to the outside of the machine base, and a sealing strip is provided at the connection between the junction box and the machine base.

[0014] In the aforementioned traction machine which is easy to install, the rotor shaft is connected with a brake and an encoder at the end away from the traction wheel.

[0015] Compared with the prior art, the utility model has the following characteristics:

[0016] (1) The utility model installs the main load bearing bearing through the end cover, so that the end cover can replace the machine base to bear the pressure brought by the rotor shaft, thereby ensuring the working stability of the machine base; after the required load-bearing strength of the machine base is reduced, the thickness of the machine base on both sides of the core chamber can be reduced, so that the required load-bearing strength can be achieved when the thickness of the machine base inside the core chamber is 180 mm and the thickness of the machine base outside the core chamber is 285 mm, thereby effectively reducing the width of the machine base itself, so that it can adapt to the installation environment of the machine room-less elevator;

[0017] (2) By optimizing the shape of the end cover and setting the first and second reinforcing ribs, on the one hand, the structural strength of the end cover itself can be improved by the first and second reinforcing ribs; on the other hand, after the first reinforcing ribs and the sleeve are fitted together, the traction wheel can limit and strengthen the end cover, thereby further improving the position accuracy and anti-deformation ability of the end cover; by interlocking the end cover and the machine base, the mutual positioning of the machine base, the end cover and the traction wheel in the axial and radial directions can be achieved, thereby improving the structural stability and use effect of the utility model;

[0018] (3) By optimizing the structure of the rotor yoke and setting the heat sink, the heat sink can play the role of blades when rotating with the rotor shaft and the rotor yoke, thereby accelerating the air flow around the core chamber and the rotor shaft, effectively improving the heat dissipation efficiency of the utility model, and making the temperature rise of the traction machine lower during use;

[0019] (4) The sealing strip provided at the connection between the junction box and the base can also effectively prevent dust or rainwater from entering the motor through the gap, so that the protection level of the utility model can be increased from IP40 to IP54, with excellent sealing and protection effects;

[0020] Therefore, the utility model has the characteristics of small occupied space and fast heat dissipation speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] The marks in the accompanying drawings are: 1-base, 2-stator core with winding, 3-rotor shaft, 4-traction wheel, 5-auxiliary load bearing, 6-end cover, 7-main load bearing, 8-magnetic steel, 9-rotor yoke, 10-junction box, 11-brake, 12-encoder, 13-blocking cover, 101-core chamber, 401-sleeve, 601-first reinforcement rib, 602-second reinforcement rib, 603-step surface, 901-inner ring body, 902-heat sink. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0024] Embodiment. A traction machine which is easy to install is composed of Figure 1 As shown, it includes a machine base 1, a stator core 2, the stator core 2 is a stator core 2 with windings, a rotor shaft 3 and a traction wheel 4, one end of the machine base 1 is connected to the rotor shaft 3 via an auxiliary load bearing 5, the other end of the machine base 1 is connected to an end cover 6, the inner side of the end cover 6 is connected to the rotor shaft 3 via a main load bearing 7, and one end of the rotor shaft 3 passes through the main load bearing 7 to connect to the traction wheel 4 located on the side of the machine base 1.

[0025] A sleeve 401 connected to the rotor shaft 3 is provided in the middle of the traction wheel 4 , and a plurality of first reinforcing ribs 601 are distributed in an annular shape on one side of the end cover 6 , and the inner ends of the first reinforcing ribs 601 are in contact with the outer wall of the sleeve 401 .

[0026] The cross-sectional shape of the end cover 6 is C-shaped, and a plurality of second reinforcing ribs 602 located in the C-shaped groove are distributed on the side of the end cover 6 away from the first reinforcing ribs 601 .

[0027] The outer portion of the end cover 6 is buckled with the base 1 via the step surface 603 .

[0028] The base 1 , the end cover 6 and the side wall of the traction wheel 4 are fitted in sequence, and a stop cover 13 is connected to the end of the rotor shaft 3 , and one side of the stop cover 13 is fitted to the traction wheel 4 .

[0029] A ring-shaped core chamber 101 is provided on one side of the machine base 1, the thickness of the machine base 1 outside the core chamber 101 is 285 mm, and the thickness of the machine base 1 inside the core chamber 101 is 180 mm; the cross-sectional shape of the core chamber 101 is U-shaped and one side is connected to the outside, the stator core 2 is sleeved on the inner ring of the core chamber 101, the outside of the stator core 2 is connected to a magnetic steel 8, the outside of the magnetic steel 8 is connected to a rotor yoke 9, and the end of the rotor yoke 9 passes through one side of the machine base 1 and is connected to the rotor shaft 3.

[0030] The rotor yoke 9 is provided with an inner ring body 901 with an L-shaped cross section at the connection between the rotor yoke 9 and the rotor shaft 3 . The inner ring body 901 has a plurality of heat sinks 902 distributed in an annular shape on the side facing the core chamber 101 .

[0031] The base 1 is externally connected to a junction box 10 , and a sealing strip is provided at the connection between the junction box 10 and the base 1 .

[0032] The rotor shaft 3 is connected with a brake 11 and an encoder 12 at one end away from the traction sheave 4 .

[0033] Working principle of the utility model: during installation, the utility model utilizes the end cover 6 to replace the original machine base 1 to connect the main load bearing 7, so that the machine base does not need to bear the radial pressure brought by the rotor shaft 3; after the force on the machine base is reduced, its overall thickness can be reduced, thereby reducing the width of the traction machine, so that it can be suitable for the installation requirements of the machine room-less elevator.

[0034] When the utility model is in use, the rotor yoke 9 rotates under the cooperation of the magnetic steel 8 and the stator core 2, and in turn drives the rotor shaft 3 and the traction wheel 4 to rotate. During the rotation process, the rotor yoke 9 can play the function of a fan blade through the rotation of the heat sink 902, thereby accelerating the air flow in the base 1 and improving the heat dissipation effect of the utility model.

Claims

1. A traction machine that is easy to install, comprising a machine base (1), a stator core (2), a rotor shaft (3) and a traction sheave (4), characterized in that: One end of the machine base (1) is connected to the rotor shaft (3) via an auxiliary load-bearing bearing (5), the other end of the machine base (1) is connected to an end cover (6), the inner side of the end cover (6) is connected to the rotor shaft (3) via a main load-bearing bearing (7), and one end of the rotor shaft (3) passes through the main load-bearing bearing (7) to be connected to a traction wheel (4) located on the side of the machine base (1).

2. A traction machine that is easy to install according to claim 1, characterized in that: A sleeve (401) connected to the rotor shaft (3) is provided in the middle of the traction wheel (4), and a plurality of first reinforcing ribs (601) are distributed in an annular shape on one side of the end cover (6), and the inner ends of the first reinforcing ribs (601) are in contact with the outer wall of the sleeve (401).

3. A traction machine that is easy to install according to claim 2, characterized in that: The cross-sectional shape of the end cover (6) is C-shaped, and a plurality of second reinforcing ribs (602) are distributed on the side of the end cover (6) away from the first reinforcing ribs (601).

4. A traction machine that is easy to install according to claim 1, characterized in that: The exterior of the end cover (6) is interlocked with the machine base (1) via a step surface (603).

5. The traction machine that is easy to install according to claim 1, characterized in that: The machine base (1), the end cover (6) and the traction wheel (4) are fitted in sequence, the end of the rotor shaft (3) is connected with a blocking cover (13), and one side of the blocking cover (13) is fitted with the traction wheel (4).

6. The traction machine that is easy to install according to claim 1, characterized in that: An annular core chamber (101) is provided on one side of the machine base (1), the cross-sectional shape of the core chamber (101) is U-shaped, the stator core (2) is sleeved on the inner ring of the core chamber (101), the stator core (2) is externally connected to a magnetic steel (8), the magnetic steel (8) is externally connected to a rotor yoke (9), and the end of the rotor yoke (9) passes through one side of the machine base (1) and is connected to a rotor shaft (3).

7. A traction machine that is easy to install according to claim 6, characterized in that: The rotor yoke (9) is provided with an inner ring body (901) with an L-shaped cross section at the connection with the rotor shaft (3), and the inner ring body (901) is provided with a plurality of cooling fins (902) distributed in an annular shape on the side facing the core chamber (101).

8. The traction machine that is easy to install according to claim 1, characterized in that: The base (1) is externally connected to a junction box (10), and a sealing strip is provided at the connection between the junction box (10) and the base (1).

9. The traction machine that is easy to install according to claim 1, characterized in that: The rotor shaft (3) is connected to a brake (11) and an encoder (12) at one end away from the traction wheel (4).

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