A thin disc traction machine

Abstract

The present invention discloses a thin disc-type traction machine, including a housing, a stator, a rotor and an encoder. A stator mounting part, a first bearing mounting part and a first encoder mounting part are directly and integrally processed on the housing, a second bearing mounting part and a second encoder mounting part are directly and integrally processed on the rotor, the encoder shaft is directly connected to the second encoder mounting part of the rotor, the fixed end of the encoder is directly connected to the first encoder mounting part on the housing, one bearing is directly connected to the second bearing mounting part of the rotor and the first bearing mounting part of the housing, and the other bearing is directly connected to the second bearing mounting part of the rotor and the bracket; the stator is mounted on the stator mounting part of the housing. The present invention eliminates two parts, the rotating shaft and the encoder seat, so that the shaft on the encoder is directly connected to the rotor, the fixed end of the encoder is directly connected to the housing, the concentricity of the encoder and the rotor is improved, the number of parts is small, and the assembly process is simple.

Description

Technical Field

[0001] The present invention relates to the technical field of traction machines, and in particular to a thin disc type traction machine. Background Art

[0002] At present, the permanent magnet synchronous gearless traction machine used in the known elevators is usually composed of a shell, a stator, a rotor, a rotating shaft, an encoder seat, an encoder, etc. The encoder shaft is usually connected to the rotating shaft, the fixed end of the encoder is connected to the encoder base, and then the rotating shaft is connected to the rotor, and the encoder seat is connected to the shell.

[0003] The connection method of the above encoder is relatively complicated. The shaft of the encoder cannot be directly connected to the rotor, which is not conducive to improving the concentricity of the encoder and the rotor. In addition, the number of parts is large and the assembly process is complicated. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a thin disc traction machine in which the shaft of the encoder is directly connected to the rotor and the fixed end of the encoder is directly connected to the housing in order to solve the above-mentioned shortcomings of the permanent magnet synchronous gearless traction machine. The thin disc traction machine can improve the concentricity of the encoder and the rotor, and the assembly process is simple.

[0005] In order to achieve the above-mentioned purpose of the invention, the thin disc traction machine of the present invention includes a shell, a stator, a rotor and an encoder, and is characterized in that a stator mounting part, a first bearing mounting part and a first encoder mounting part are directly and integrally processed on the shell, a second bearing mounting part and a second encoder mounting part are directly and integrally processed on the rotor, the shaft of the encoder is directly connected to the second encoder mounting part of the rotor, the fixed end of the encoder is directly connected to the first encoder mounting part on the shell, one bearing is directly connected to the second bearing mounting part of the rotor and the first bearing mounting part of the shell, and the other bearing is directly connected to the second bearing mounting part of the rotor and the bracket; the stator is mounted on the stator mounting part of the shell.

[0006] In a preferred embodiment of the present invention, a rotor installation cavity is provided in the housing, a traction wheel is provided on the periphery of the rotor, and the traction wheel is embedded in the rotor installation cavity.

[0007] In a preferred embodiment of the present invention, a stator installation cavity is provided in the rotor, and the stator is arranged in the stator installation cavity, so that the thin disc traction machine of the present invention is further light and thin.

[0008] In a preferred embodiment of the present invention, a third bearing mounting portion is provided on the bracket, and another bearing is directly connected to the second bearing mounting portion of the rotor and the third bearing mounting portion of the bracket.

[0009] In a preferred embodiment of the present invention, the first encoder mounting portion is an encoder mounting hole, and the fixed end of the encoder is fixed in the encoder mounting hole by interference fit.

[0010] Due to the adoption of the above technical solution, the thin disc traction machine of the present invention has the stator mounting part, the bearing mounting part and the encoder mounting part directly and integrally processed on the shell, and the bearing mounting part and the encoder mounting part directly and integrally processed on the rotor, thereby eliminating two parts, the rotating shaft and the encoder seat, so that the shaft on the encoder is directly connected to the rotor, and the fixed end of the encoder is directly connected to the shell, thereby improving the concentricity of the encoder and the rotor, reducing the number of parts, and simplifying the assembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a cross-sectional view of the thin disc type traction machine of the present invention. DETAILED DESCRIPTION

[0012] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0013] See also Figure 1 The thin disc traction machine shown in the figure includes a housing 10, a stator 20, a rotor 30 and an encoder 40. The stator mounting portion 11, the first bearing mounting portion 12 and the first encoder mounting portion 13 are directly and integrally processed on the housing 10, for example, by die-casting. The second bearing mounting portion 31 and the second encoder mounting portion 32 are directly and integrally processed on the rotor 30, for example, by die-casting. The shaft 41 of the encoder 40 is directly connected to the second encoder mounting portion 32 of the rotor 30.

[0014] The first encoder mounting portion 13 is an encoder mounting hole, and the fixed end 42 of the encoder 40 is installed in the encoder mounting hole by interference fit, so that the fixed end 42 of the encoder 40 is directly connected to the first encoder mounting portion 13 on the housing 10, a bearing 50 is directly connected to the second bearing mounting portion 31 of the rotor 30 and the first bearing mounting portion 12 of the housing 10, and another bearing 60 is directly connected to the second bearing mounting portion 31 of the rotor 30 and the third bearing mounting portion 71 of the bracket 70; the stator 20 is installed on the stator mounting portion 11 of the housing 10.

[0015] In addition, a rotor installation cavity 14 is provided in the housing 10, and a traction wheel 33 is provided on the periphery of the rotor 30, and the traction wheel 33 is embedded in the rotor installation cavity 14. A stator installation cavity 34 is provided in the rotor 30, and the stator 20 is arranged in the stator installation cavity 34, which makes the thin disc traction machine of the present invention thinner and lighter.

Claims

1. A thin disc traction machine, comprising a housing, a stator, a rotor and an encoder, characterized in that: A stator mounting portion, a first bearing mounting portion and a first encoder mounting portion are directly and integrally processed on the shell, a second bearing mounting portion and a second encoder mounting portion are directly and integrally processed on the rotor, the encoder shaft is directly connected to the second encoder mounting portion of the rotor, the fixed end of the encoder is directly connected to the first encoder mounting portion on the shell, one bearing is directly connected to the second bearing mounting portion of the rotor and the first bearing mounting portion of the shell, and another bearing is directly connected to the second bearing mounting portion of the rotor and the bracket; the stator is mounted on the stator mounting portion of the shell.

2. A thin disc traction machine as claimed in claim 1, characterized in that: A rotor installation cavity is arranged in the shell, a traction wheel is arranged on the periphery of the rotor, and the traction wheel is embedded in the rotor installation cavity.

3. A thin disc traction machine as claimed in claim 1 or 2, characterized in that: A stator installation cavity is provided in the rotor, and the stator is arranged in the stator installation cavity.

4. A thin disc traction machine as claimed in claim 3, characterized in that: A third bearing mounting portion is arranged on the bracket, and another bearing is directly connected to the second bearing mounting portion of the rotor and the third bearing mounting portion of the bracket.

5. A thin disc traction machine as claimed in claim 4, characterized in that: The first encoder mounting portion is an encoder mounting hole, and the fixed end of the encoder is fixed in the encoder mounting hole by interference fit.

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