Cableway direct drive motor rotary encoder fixing support

Abstract

The utility model provides a cableway direct drive motor rotary encoder fixing support which comprises a fixing plate, a rotor core shaft, a fixing frame, a bearing seat, a coupler, a hollow shaft, a first encoder, a first pressing plate, a second pressing plate, a middle connecting disc, a bearing, a shaft end check ring and a second encoder. The four-point type encoder support is simple in structure, stable, reliable and even in stress, coaxial alignment is easy to operate, alignment can be conducted rapidly, the installation precision of the encoder is guaranteed, meanwhile, rotation after installation is prevented, the service life of the rotary encoder is prolonged, and high-quality operation of the encoder is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of cableway installation, and in particular relates to a fixing bracket for a rotary encoder of a cableway direct-drive motor. Background Art

[0002] In recent years, with the rapid development of passenger ropeways and the improvement of equipment automation level, the ropeway industry has higher and higher requirements for drive technology. High-efficiency, low-energy consumption, high-precision, and low-noise direct drive technology is increasingly used in the ropeway industry. As the core feedback component of the direct drive motor, the installation of the rotary encoder plays a vital role in the performance and structure of the entire drive system.

[0003] In a certain project, the rotary encoder needs to accurately transmit the rotor angular velocity back to the electronic control system while maintaining a high degree of coaxiality with the bellows coupling and the motor. At the same time, after the control system identifies the correct position of the rotor, it sends a motor rotation command. Once the coaxiality accuracy does not meet the requirements, the system will not be able to start. When installing the direct-drive motor rotary encoder, the encoder shaft, coupling, and motor rotor axis are required to be coaxial. If the coaxiality is not accurate, it is easy to cause damage to the encoder and coupling. During the installation process, the coaxial alignment requirements are very high. Due to space limitations, the encoder shaft is not easy to measure and it is difficult to adjust to the specified accuracy. Therefore, how to solve the problem of coaxial alignment during installation has become a difficulty for the cableway direct-drive motor encoder to ensure high-precision operation. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The utility model provides a fixing bracket for a rotary encoder of a cableway direct-drive motor, so as to solve the technical problems that under the condition of high coaxiality requirement of the rotary encoder, it is inconvenient to measure the coaxiality during installation and the installation accuracy of the encoder cannot be guaranteed.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the utility model proposes a cableway direct drive motor rotary encoder fixing bracket, which includes a fixing plate, a rotor core shaft, a fixing frame, a bearing seat, a coupling, a hollow shaft, a first encoder, a first pressing plate, a second pressing plate, an intermediate connecting plate, a bearing, a shaft end retaining ring and a second encoder;

[0008] The two bearing seats are respectively fixed in the top center hole and the bottom center hole of the fixed frame, and a bearing is installed in each bearing seat;

[0009] The bottoms of the first encoder and the second encoder are connected to the corresponding intermediate connecting plates, and the two intermediate connecting plates are respectively fixed on the two bearing seats at the fixed part and the bottom; the hollow shaft is installed at the center of the first encoder and the second encoder, and the elastic clamps on the two encoders hold the hollow shaft tightly; the bottom end of the hollow shaft is connected to the top end of the coupling to ensure that the hollow shaft and the coupling are coaxially connected; the bottom end of the coupling is connected to the top end of the rotor core shaft; a circumferential protruding fixing part is provided on the side wall of the rotor core shaft, and a bolt is inserted into the threaded hole of the fixing part to fix the rotor core shaft to the lower cross beam of the motor rotor;

[0010] The fixing plate is a square plate structure with a circular hole in the center that allows the hollow shaft and the first encoder to extend upward. The left and right sides of the circular hole are respectively fixed to the top of the fixing frame by a second pressing plate and bolts, and the front and rear sides of the circular hole are respectively fixed to the fixing frame and the upper crossbeam of the motor stator by a first pressing plate and bolts; two bolts are provided at both ends of the inner side of each first pressing plate, and the upper crossbeam of the motor stator presses down to tighten the upper surface of the fixing plate.

[0011] Furthermore, the fixed frame is a hexahedral frame structure with each surface being hollowed out.

[0012] Furthermore, the bearing is fixed by a retaining spring to prevent the bearing from axially moving, thereby ensuring that the two first encoders and the second encoder are coaxial after installation and are not subject to radial force.

[0013] Furthermore, the top end of the hollow shaft is fixed by a shaft end retaining ring.

[0014] Furthermore, the bottoms of the first encoder and the second encoder are respectively connected to the corresponding intermediate connecting plates through countersunk bolts.

[0015] (III) Beneficial effects

[0016] The utility model proposes a cableway direct drive motor rotary encoder fixing bracket, including a fixing plate, a rotor core shaft, a fixing frame, a bearing seat, a coupling, a hollow shaft, a first encoder, a first pressing plate, a second pressing plate, an intermediate connecting plate, a bearing, a shaft end retaining ring and a second encoder. The four-point encoder bracket adopted by the utility model has a simple structure, is stable and reliable, has uniform force, is easy to operate for coaxial alignment, can quickly align, and ensures the installation accuracy of the encoder, while preventing rotation after installation, thereby increasing the service life of the rotary encoder and ensuring the high-quality operation of the encoder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of the rotary encoder fixing bracket structure of an embodiment of the utility model;

[0018] Figure 2 This is a cross-sectional view of the rotary encoder fixing bracket structure of an embodiment of the utility model;

[0019] Figure 3 A three-dimensional diagram of the rotary encoder fixing bracket structure of an embodiment of the utility model;

[0020] Figure 4 This is a structural diagram of a fixed bracket in an embodiment of the utility model;

[0021] Figure 5 This is a structural diagram of the rotor core shaft in the embodiment of the utility model;

[0022] Figure 6 This is a diagram of the fixing structure of the fixing plate and the pressing plate in the embodiment of the utility model. DETAILED DESCRIPTION

[0023] In order to make the purpose, content and advantages of the utility model clearer, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments.

[0024] This embodiment provides a cableway direct drive motor rotary encoder fixing bracket, the structure of which is as follows: Figures 1 to 3 As shown, it mainly includes a fixed plate 1, a rotor core shaft 2, a fixed frame 3, a bearing seat 4, a coupling 5, a hollow shaft 6, a first encoder 7, a first pressure plate 8, a second pressure plate 9, an intermediate connecting plate 10, a bearing 13, a retaining ring 17, a shaft end retaining ring 18 and a second encoder 19.

[0025] like Figure 4 As shown, the fixed frame 3 is a hexahedral frame structure with hollowed-out surfaces. Two bearing seats 4 are fixed in the top center hole and the bottom center hole of the fixed frame 3 respectively by first bolts (M4×12) 14. A bearing 13 is installed in each bearing seat 4, and the bearing 13 is fixed by a retaining spring 17 to prevent the bearing 13 from axial stringing, thereby ensuring that the two first encoders 7 and the second encoder 19 are coaxial after installation and are not subject to radial force.

[0026] The bottom of the first encoder 7 and the second encoder 19 are connected to the corresponding intermediate connecting plates 10 through countersunk bolts 16, and the two intermediate connecting plates 10 are fixed to the two bearing seats 4 at the fixed part and the bottom through second bolts (M3×10) 15. The hollow shaft 6 is installed at the center position of the first encoder 7 and the second encoder 19. The top of the hollow shaft 6 is fixed by a shaft end retaining ring 18, and the elastic clamps on the two encoders clamp the hollow shaft 6. The bottom end of the hollow shaft 6 is connected to the top of the coupling 5 to ensure that the hollow shaft 6 and the coupling 5 are coaxially connected. The bottom end of the coupling 5 is connected to the top of the rotor core shaft 2. As shown Figure 5 As shown, a circumferential protruding fixing portion is provided on the side wall of the rotor core shaft 2, and a third bolt (M10×25) 12 is inserted into the threaded hole of the fixing portion to fix the rotor core shaft 2 to the lower cross beam of the motor rotor.

[0027] like Figure 6 As shown, the fixing plate 1 is a square plate structure, with a circular hole in the center that allows the hollow shaft 6 and the first encoder 7 to extend upward. The left and right sides of the circular hole are respectively fixed to the top of the fixing frame 3 by a second pressing plate 9 and two fourth bolts (M10×35) 11, and the front and rear sides of the circular hole are respectively fixed to the fixing frame 3 and the upper cross beam of the motor stator by a first pressing plate 8 and two fourth bolts (M10×35) 11. Two fourth bolts (M10×35) 11 are provided at both ends of the inner side of each first pressing plate 8, and the fourth bolts 11 are pressed downward to tighten the upper surface of the fixing plate 1 by the upper cross beam of the motor stator. Since the fixing bracket adopts a four-point method to fix the encoder on the cross beam, the fixing force is uniform. By adjusting the four fourth bolts 11 located on the inner side of the first pressing plate 8, the horizontality of the first encoder 7 and the second encoder 19 can be accurately adjusted.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A cableway direct drive motor rotary encoder fixing bracket, characterized in that: The fixed bracket includes a fixed plate, a rotor core shaft, a fixed frame, a bearing seat, a coupling, a hollow shaft, a first encoder, a first pressing plate, a second pressing plate, an intermediate connecting plate, a bearing, a shaft end retaining ring and a second encoder; The two bearing seats are respectively fixed in the top center hole and the bottom center hole of the fixed frame, and a bearing is installed in each bearing seat; The bottoms of the first encoder and the second encoder are connected to the corresponding intermediate connecting plates, and the two intermediate connecting plates are respectively fixed on the two bearing seats at the fixed part and the bottom; the hollow shaft is installed at the center of the first encoder and the second encoder, and the elastic clamps on the two encoders hold the hollow shaft tightly; the bottom end of the hollow shaft is connected to the top end of the coupling to ensure that the hollow shaft and the coupling are coaxially connected; the bottom end of the coupling is connected to the top end of the rotor core shaft; a circumferential protruding fixing part is provided on the side wall of the rotor core shaft, and a bolt is inserted into the threaded hole of the fixing part to fix the rotor core shaft to the lower cross beam of the motor rotor; The fixing plate is a square plate structure with a circular hole in the center that allows the hollow shaft and the first encoder to extend upward. The left and right sides of the circular hole are respectively fixed to the top of the fixing frame by a second pressing plate and bolts, and the front and rear sides of the circular hole are respectively fixed to the fixing frame and the upper crossbeam of the motor stator by a first pressing plate and bolts; two bolts are provided at both ends of the inner side of each first pressing plate, and the upper crossbeam of the motor stator presses down to tighten the upper surface of the fixing plate.

2. The cableway direct drive motor rotary encoder fixing bracket according to claim 1, characterized in that: The fixed frame is a hexahedral frame structure with each side being hollowed out.

3. The cableway direct drive motor rotary encoder fixing bracket according to claim 1, characterized in that: The bearing is fixed by a retaining spring to prevent the bearing from axially moving, thereby ensuring that the two first encoders and the second encoders are coaxial after installation and are not subject to radial force.

4. The cableway direct drive motor rotary encoder fixing bracket according to claim 1, characterized in that: The top end of the hollow shaft is fixed by a shaft end retaining ring.

5. The cableway direct drive motor rotary encoder fixing bracket according to claim 1, characterized in that: The bottoms of the first encoder and the second encoder are respectively connected to the corresponding middle connecting disks through countersunk bolts.

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