Novel structure of permanent magnet synchronous traction machine

Abstract

The utility model discloses a novel structure of a permanent magnet synchronous traction machine, which relates to the technical field of elevators, and aims to solve the problems that the traction machine is large in dead weight and parts are independently processed, and adopts the technical scheme that the novel structure of the permanent magnet synchronous traction machine comprises a machine base, a main shaft is rotatably matched with the middle part of the machine base, and the middle part of the main shaft is of a hollow structure; a rotor magnet yoke is arranged on the peripheral side of the rear end of the main shaft, and a cavity is formed between the rotor magnet yoke and the machine base. The rotor magnet yoke is arranged on the peripheral side of the rear end of the main shaft, so that the main shaft and the rotor magnet yoke are integrated, machining steps and machining difficulty of precision parts of the main shaft are effectively reduced, machining efficiency and qualified rate are improved, and in addition, due to the fact that the number of parts which bear loads and are fixedly connected with the rotor magnet yoke is reduced, machining cost is reduced. Therefore, the problems that noise is caused by assembly and assembly is not in place are solved, the failure rate is reduced, and the dead weight of the traction machine is reduced in the process that more loads can be borne.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevators, and in particular relates to a new structure of a permanent magnet synchronous traction machine. Background Art

[0002] Elevator traction machine is a power device used in elevators. Its main function is to transmit motion and torque. It is usually composed of motors, brakes, traction wheels, guide wheels and other components. With the development of society and the improvement of people's living standards, people have more requirements for the safety, comfort, and ease of operation of elevators. Therefore, in order to meet market requirements, enterprises have successively developed more traction machines with different structures and functions.

[0003] Although conventional traction machines can transmit power to drive elevators, their parts need to be processed independently, which requires the use of more processing equipment and personnel or the need to find more parts suppliers. In addition, the structure of the processing position is relatively complex, which puts higher requirements on both processing and assembly, reducing production efficiency to a certain extent. At the same time, the material utilization rate is low and the weight of the traction machine is relatively large.

[0004] In summary, the present invention provides a new structure of a permanent magnet synchronous traction machine to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a new structure of a permanent magnet synchronous traction machine, which has the advantages that, by arranging a rotor yoke on the peripheral side of the rear end of the main shaft, the main shaft and the rotor yoke become a whole, effectively reducing the processing steps and difficulty of the precision parts of the main shaft, thereby improving the processing efficiency and the qualified rate, and by arranging a hollow structure in the middle of the main shaft, it can ensure that the loss of material is reduced under the condition of strength, and at the same time, the front bearing cover arranged at one end of the spherical roller bearing and the tapered hole flange arranged at the rear end of the main shaft effectively reduce the steps of installing the main shaft separately, effectively reduce the difficulty of assembly, and thus make the whole assembly process simpler, in addition, since the number of parts fastened to the rotor yoke that bears the load is reduced, the problems of noise and inadequate assembly caused by assembly are solved, so that the failure rate is reduced, and in the process of being able to withstand more loads, the deadweight of the traction machine is reduced.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of permanent magnet synchronous traction machine structure, including a machine base, a main shaft is rotatably matched in the middle of the machine base, and the middle of the main shaft is a hollow structure, a rotor yoke is installed on the peripheral side of the rear end of the main shaft, a cavity is provided between the rotor yoke and the machine base, a spherical roller bearing is installed between the front end inner wall of the rotor yoke and the peripheral side of the main shaft, a front bearing gland corresponding to the spherical roller bearing is installed at one end of the rotor yoke, and the spherical roller bearing is rotatably matched with the main shaft;

[0007] A traction wheel is rotatably mounted on the circumference of the front end of the main shaft, a shaft head pressure plate is installed on one side of the traction wheel and the front end of the main shaft, a deep groove ball bearing is installed between the inner wall of the rear end of the rotor yoke and the circumference of the main shaft, a tapered hole flange is installed on the rear end of the main shaft, an encoder seat corresponding to the other end of the rotor yoke is installed on one side of the tapered hole flange, and an encoder is installed on one side of the encoder seat.

[0008] By adopting the above technical solution, the rotor yoke arranged on the peripheral side of the rear end of the main shaft is utilized to make the main shaft and the rotor yoke become a whole, effectively reducing the processing steps and processing difficulty of the spindle precision parts, thereby improving the processing efficiency and qualified rate, and utilizing the hollow structure arranged in the middle of the main shaft to ensure that material loss is reduced under the condition of strength, and at the same time, the front bearing cover arranged at one end of the spherical roller bearing and the tapered hole flange arranged at the rear end of the main shaft effectively reduce the steps of installing the main shaft separately, and effectively reduce the assembly difficulty, thereby making the entire assembly process simpler, in addition, since the number of parts fastened to the rotor yoke that bears the load is reduced, the problems of noise and inadequate assembly caused by assembly are solved, the failure rate is reduced, and in the process of being able to withstand more loads, the deadweight of the traction machine is reduced.

[0009] The utility model is further configured as follows: the shaft head pressure plate is fixedly connected to one side of the traction wheel, and a flat key is installed between the middle part of the shaft head pressure plate and the main shaft.

[0010] By adopting the above technical solution and utilizing the flat key provided between the shaft head pressure plate and the main shaft, the traction wheel and the main shaft become a whole, which can better drive the traction wheel to rotate synchronously.

[0011] The utility model is further configured as follows: a permanent magnet located on the inner wall of the rotor yoke and an iron core installed in the permanent magnet are installed in the cavity.

[0012] By adopting the above technical solution and utilizing the permanent magnets arranged on the inner wall of the rotor yoke, the traction machine can pull a heavier elevator, thereby effectively improving the traction force of the traction machine and reducing energy consumption and wear during traction.

[0013] The utility model is further configured as follows: a junction box is installed on the peripheral side of the base.

[0014] By adopting the above technical solution and utilizing the junction box arranged on the peripheral side of the machine base, the safety of the wire connection and the maintenance circuit can be protected, and the wire connection point can be effectively prevented from being harmed by the external environment, thereby reducing the failure rate of the traction machine.

[0015] The utility model is further configured as follows: a retaining spring is arranged between the front bearing cover and the main shaft, and a first positioning pin is arranged between one end of the rotor yoke and the front bearing cover.

[0016] By adopting the above technical solution, the first positioning pin provided between the rotor yoke and the front bearing cover is utilized to fix the rotor yoke and the front bearing cover to form a whole, thereby better driving the main shaft to rotate.

[0017] The utility model is further configured as follows: a second positioning pin is arranged between the rear end of the main shaft and the tapered hole flange.

[0018] By adopting the above technical solution, the second positioning pin is arranged between the rear end of the main shaft and the tapered hole flange, so that the rear end of the main shaft and the tapered hole flange are fixedly connected to form a whole, thereby better improving the stability of the main shaft.

[0019] The utility model is further configured as follows: a third positioning pin is arranged between the other end of the rotor yoke and the encoder seat.

[0020] By adopting the above technical solution, the third positioning pin is used between the rotor yoke and the encoder seat, so that the rotor yoke and the encoder seat are fixedly connected to form a whole, the encoder is better installed, and the stability of the encoder is effectively improved.

[0021] In summary, the beneficial technical effects of the utility model are:

[0022] 1. By setting the rotor yoke on the circumferential side of the rear end of the spindle, the spindle and the rotor yoke become a whole, which effectively reduces the processing steps and difficulty of the spindle precision parts, thereby improving the processing efficiency and qualified rate. In addition, by setting the hollow structure in the middle of the spindle, it can ensure that the material loss is reduced under the condition of strength.

[0023] 2. By setting the front bearing cover at one end of the spherical roller bearing and the tapered hole flange at the rear end of the main shaft, the steps of installing the main shaft separately are effectively reduced, and the difficulty of assembly is effectively reduced, thereby making the entire assembly process simpler. In addition, since the number of parts fastened to the rotor yoke that bears the load is reduced, the problems of noise and improper assembly caused by assembly are solved, the failure rate is reduced, and the weight of the traction machine is reduced in the process of being able to withstand more loads.

[0024] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0026] Figure 1 This is a schematic diagram of the main shaft structure of an embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the traction sheave structure of an embodiment of the utility model;

[0028] Figure 3 This is a schematic diagram of the permanent magnet structure of an embodiment of the utility model;

[0029] In the attached drawings, the parts represented by each reference numeral are listed as follows: 1. Machine base; 2. Main shaft; 3. Rotor yoke; 4. Spherical roller bearing; 5. Bearing cover; 6. Traction wheel; 7. Deep groove ball bearing; 8. Shaft head pressure plate; 9. Tapered hole flange; 10. Encoder seat; 11. Encoder; 12. Flat key; 13. Junction box; 14. Permanent magnet; 15. Iron core. DETAILED DESCRIPTION

[0030] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0031] Reference Figure 1-3 , which is a new type of permanent magnet synchronous traction machine structure disclosed in the utility model, comprising: a machine base 1, a main shaft 2 is rotatably matched in the middle of the machine base 1, and the middle of the main shaft 2 is a hollow structure, a rotor yoke 3 is installed on the peripheral side of the rear end of the main shaft 2, a cavity is provided between the rotor yoke 3 and the machine base 1, a spherical roller bearing 4 is installed between the inner wall of the front end of the rotor yoke 3 and the peripheral side of the main shaft 2, a front bearing gland 5 corresponding to the spherical roller bearing 4 is installed at one end of the rotor yoke 3, and the spherical roller bearing 4 is rotatably matched with the main shaft 2;

[0032] A traction wheel 6 is rotatably mounted on the circumference of the front end of the main shaft 2, a shaft head pressure plate 8 is installed on one side of the traction wheel 6 and the front end of the main shaft 2, a deep groove ball bearing 7 is installed between the inner wall of the rear end of the rotor yoke 3 and the circumference of the main shaft 2, a tapered hole flange 9 is installed at the rear end of the main shaft 2, an encoder seat 10 corresponding to the other end of the rotor yoke 3 is installed on one side of the tapered hole flange 9, and an encoder 11 is installed on one side of the encoder seat 10.

[0033] Embodiment 1: When installing the traction machine, first the machine base 1 is closed to form an integrated assembly space, the spherical roller bearing 4 is heated and inserted into the rotor yoke 3, and then the staff uses an electric wrench or a screwdriver to lock the bearing cover 5 on one side of the spherical roller bearing 4, so that the spherical roller bearing 4 and the bearing cover 5 are fixedly connected to form a whole, thereby completing the installation of the rotor yoke 3, and then the installed rotor yoke 3 is inserted into the peripheral side of the main shaft 2, so that the rotor yoke 3 and the main shaft 2 become a whole, so that the main shaft 2 and the rotor yoke 3 are installed inside the machine base 1, and then the traction wheel 6 is installed on the peripheral side of the front end of the main shaft 2, and the shaft head pressure plate 8 is installed on one side of the traction wheel 6 and the front end of the main shaft 2, and at the same time, the deep groove ball bearing 7 is heated and inserted into the peripheral side of the rear end of the main shaft 2, and then the tapered hole flange 9 is installed on the rear end of the main shaft 2, and then the encoder seat 10 is installed on one side of the tapered hole flange 9, and the encoder 11 is installed on one side of the encoder seat 10, thereby completing the installation of the traction machine.

[0034] It should be noted that all electrical devices involved in this application can be powered by batteries or external power supplies.

[0035] Reference Figure 1 In this embodiment, the shaft head pressure plate 8 is fixedly connected to one side of the traction wheel 6, and a flat key 12 is installed between the middle part of the shaft head pressure plate 8 and the main shaft 2.

[0036] When the shaft head pressure plate 8 is connected to the main shaft 2 , the flat key 12 is passed through the shaft head pressure plate 8 and connected to the main shaft 2 , thereby completing the installation and fixation of the main shaft 2 and the traction wheel 6 .

[0037] Reference Figure 1 In the present embodiment, a permanent magnet 14 located on the inner wall of the rotor yoke 3 and an iron core 15 installed in the permanent magnet 14 are installed in the cavity; a terminal box 13 is installed on the peripheral side of the base 1 of the present embodiment.

[0038] When installing the traction machine, the permanent magnet 14 is first installed on the inner wall of the rotor yoke 3 , then the iron core 15 is installed on the inner wall of the permanent magnet 14 , and the terminal box 13 is installed on the circumferential side above the machine base 1 .

[0039] Reference Figure 1In this embodiment, a retaining spring is installed between the front bearing cover 5 and the main shaft 2, and a first locating pin is installed between one end of the rotor yoke 3 and the front bearing cover 5; a second locating pin is installed between the rear end of the main shaft 2 and the tapered hole flange 9; a third locating pin is installed between the other end of the rotor yoke 3 and the encoder seat 10.

[0040] When the rotor yoke 3 is connected to the front bearing cover 5, the first locating pin is passed through the front bearing cover 5 and connected to the rotor yoke 3, and a retaining spring is connected between the front bearing cover 5 and the main shaft 2. When the rear end of the main shaft 2 is connected to the tapered hole flange 9, the second locating pin is passed through the tapered hole flange 9 and connected to the rear end of the main shaft 2. When the rotor yoke 3 is connected to the encoder seat 10, the third locating pin is passed through the encoder seat 10 and connected to the rotor yoke 3.

[0041] Reference Figure 2 Embodiment 2: The tapered hole flange 9 can also be replaced with a shaft head pressure plate 8. The rear end of the main shaft 2 is equipped with a shaft head pressure plate 8. The middle part of one side of the shaft head pressure plate 8 is threadedly connected to the encoder 11 through a threaded shaft head. At the same time, the shaft head pressure plate 8 corresponds to the other end of the rotor yoke 3.

[0042] The encoder 11 can be directly disassembled from the threaded shaft head in the middle of one side of the shaft head pressure plate 8, and vice versa during installation, thereby making it more convenient to disassemble and assemble the encoder 11.

[0043] Reference Figure 3 Embodiment 3: The middle portion of the main shaft 2 may also be a tapered hole structure, an encoder seat 10 is mounted on one side of the rotor yoke 3 , and an encoder 11 is mounted on one side of the encoder seat 10 .

[0044] When installing the encoder 11, the encoder seat 10 is first installed on one side of the rotor yoke 3, and then the encoder 11 is installed on one side of the encoder seat 10, so as to reduce the use of parts.

[0045] The above-mentioned embodiments may be combined with each other.

[0046] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A new type of permanent magnet synchronous traction machine structure, comprising: A machine base (1), characterized in that a main shaft (2) is rotatably matched in the middle of the machine base (1), and the middle of the main shaft (2) is a hollow structure, a rotor yoke (3) is installed on the peripheral side of the rear end of the main shaft (2), a cavity is provided between the rotor yoke (3) and the machine base (1), a spherical roller bearing (4) is installed between the inner wall of the front end of the rotor yoke (3) and the peripheral side of the main shaft (2), a front bearing cover (5) corresponding to the spherical roller bearing (4) is installed at one end of the rotor yoke (3), and the spherical roller bearing (4) is rotatably matched with the main shaft (2); The front end circumferential side of the main shaft (2) is rotatably matched with a traction wheel (6), one side of the traction wheel (6) and the front end of the main shaft (2) are provided with a shaft head pressure plate (8), a deep groove ball bearing (7) is provided between the rear end inner wall of the rotor yoke (3) and the circumferential side of the main shaft (2), the rear end of the main shaft (2) is provided with a tapered hole flange (9), one side of the tapered hole flange (9) is provided with an encoder seat (10) corresponding to the other end of the rotor yoke (3), and one side of the encoder seat (10) is provided with an encoder (11).

2. A new type of permanent magnet synchronous traction machine structure according to claim 1, characterized in that: The shaft head pressure plate (8) is fixedly connected to one side of the traction wheel (6), and a flat key (12) is installed between the middle part of the shaft head pressure plate (8) and the main shaft (2).

3. A new type of permanent magnet synchronous traction machine according to claim 1, characterized in that: The cavity is provided with a permanent magnet (14) located on the inner wall of the rotor yoke (3) and an iron core (15) installed in the permanent magnet (14).

4. A new type of permanent magnet synchronous traction machine structure according to claim 1, characterized in that: A junction box (13) is installed on the peripheral side of the machine base (1).

5. The novel structure of a permanent magnet synchronous traction machine according to claim 1 is characterized in that: A retaining spring is installed between the front bearing cover (5) and the main shaft (2), and a first positioning pin is installed between one end of the rotor yoke (3) and the front bearing cover (5).

6. A new type of permanent magnet synchronous traction machine structure according to claim 1, characterized in that: A second positioning pin is installed between the rear end of the main shaft (2) and the tapered hole flange (9).

7. A new type of permanent magnet synchronous traction machine structure according to claim 1, characterized in that: A third positioning pin is installed between the other end of the rotor yoke (3) and the encoder seat (10).

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