A rotating angle monitoring structure for a tunnel washing machine

Abstract

This invention provides a rotation angle monitoring structure for a tunnel-type washing machine, including a motor. The output end of the motor has a motor drive shaft, and a coupling mounting shaft is located at the center of the end face of the motor drive shaft. The coupling mounting shaft is coaxial with the motor drive shaft and is connected to an encoder via a coupling. The encoder is mounted on one end of an encoder mounting bracket, and the other end of the encoder mounting bracket is connected to the end face of the motor drive shaft. This invention uses a coupling mounting shaft fixed to the motor drive shaft, an encoder bracket to fix the encoder to the motor drive shaft, and a coupling to connect the encoder's rotating shaft and the motor drive shaft for rotation angle detection. An incremental encoder is used to sense the motor's rotation angle in real time, and the current rotation angle of the washing machine is analyzed by a program. After installation and adjustment, no real-time maintenance is required, making the equipment more stable.

Description

Technical Field

[0001] This invention relates to the field of industrial washing equipment technology, and specifically to a rotation angle monitoring structure for a tunnel-type washing machine. Background Technology

[0002] Currently, washing machine drums monitor their rotation by using two proximity sensors (AB phase) to illuminate the drive gear, along with a zero-position proximity sensor (Z phase) on the drum's radial direction to control the rotation angle. This method has the following technical drawbacks during startup and shutdown: due to the equipment's significant inertia, angle detection is prone to errors, leading to malfunctions. Furthermore, due to equipment vibrations, the AB phases require periodic calibration, making it very inconvenient to use.

[0003] Therefore, how to design a rotation angle monitoring structure for a tunnel-type washing machine has become an urgent problem to be solved. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a rotation angle monitoring structure for a tunnel-type washing machine to solve at least one of the above-mentioned technical problems.

[0005] The technical solution of the present invention is: a rotation angle monitoring structure for a tunnel-type washing machine, including a motor, a motor drive shaft is provided at the output end of the motor, a coupling mounting shaft is provided at the center of the end face of the motor drive shaft, the coupling mounting shaft is coaxial with the motor drive shaft, the coupling mounting shaft is connected to an encoder through a coupling, the encoder is installed at one end of an encoder mounting bracket, and the other end of the encoder mounting bracket is connected to the end face of the motor drive shaft.

[0006] This invention employs a method where the coupling mounting shaft is fixed to the motor drive shaft, and the encoder is fixed to the motor drive shaft via an encoder bracket. The encoder rotating shaft and the motor drive shaft are connected by a coupling for rotation angle detection. An incremental encoder is used to sense the motor rotation angle in real time, and the current rotation angle of the washing machine body is analyzed by a program. After installation and adjustment, no real-time maintenance is required, making the equipment more stable. This invention solves the technical defects of existing washing machine washing machines that use two proximity sensors to illuminate the drive gear (AB phase) in conjunction with a zero-position proximity sensor (Z phase) on the radial side of the washing machine body to control the rotation angle. During start-up and shutdown, due to the large inertia of the equipment, the angle detection is prone to errors, causing the equipment to malfunction. Furthermore, due to equipment vibration and other reasons, the AB phase needs to be calibrated periodically, which is very inconvenient. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the installation structure of the present invention.

[0008] Figure 2 for Figure 1AA cross-section view.

[0009] In the diagram: 1. Motor drive shaft; 2. Coupling mounting shaft; 3. Coupling; 4. Encoder; 5. Encoder mounting bracket. Detailed Implementation

[0010] The present invention will now be further described with reference to the accompanying drawings.

[0011] See Figure 1-2 The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0012] Example 1: A rotation angle monitoring structure for a tunnel-type washing machine, referenced. Figure 1 , Figure 2 The device includes a motor, the output end of which is provided with a motor drive shaft 1, and the center of the end face of the motor drive shaft 1 is provided with a coupling mounting shaft 2. The coupling mounting shaft 2 is coaxial with the motor drive shaft 1. The coupling mounting shaft 2 is connected to an encoder 4 through a coupling 3. The encoder 4 is mounted on one end of an encoder mounting bracket 5, and the other end of the encoder mounting bracket 5 is connected to the end face of the motor drive shaft 1. This invention employs a method where the coupling mounting shaft is fixed to the motor drive shaft, and the encoder is fixed to the motor drive shaft via an encoder bracket. The encoder rotating shaft and the motor drive shaft are connected by a coupling for rotation angle detection. An incremental encoder is used to sense the motor rotation angle in real time, and the current rotation angle of the washing machine body is analyzed by a program. After installation and adjustment, no real-time maintenance is required, making the equipment more stable. This invention solves the technical defects of existing washing machine washing machines that use two proximity sensors to illuminate the drive gear (AB phase) in conjunction with a zero-position proximity sensor (Z phase) on the radial side of the washing machine body to control the rotation angle. During start-up and shutdown, due to the large inertia of the equipment, the angle detection is prone to errors, causing the equipment to malfunction. Furthermore, due to equipment vibration and other reasons, the AB phase needs to be calibrated periodically, which is very inconvenient.

[0013] Example 2: Based on Example 1, one end of the coupling mounting shaft 2 is provided with a threaded section, and the center of the end face of the motor drive shaft 1 is provided with a countersunk hole. The small end of the countersunk hole is a first threaded hole, and the threaded section is connected to the first threaded hole. This invention uses a coupling mounting shaft with a threaded section at one end, which is connected to the first threaded hole at the center of the end face of the motor drive shaft, thus mounting the coupling mounting shaft onto the motor drive shaft.

[0014] Example 3: Based on Example 1, a first plane is provided on the cylindrical surface of the other end of the coupling mounting shaft 2, and a first through hole is provided inside the coupling 3. A second plane is provided at one end of the first through hole, and the first plane and the second plane are fitted together for installation. This invention uses a first plane on the cylindrical surface of the other end of the coupling mounting shaft. By mates the first plane with the second plane of the first through hole of the coupling, the positioning and installation of the coupling mounting shaft and the coupling are achieved.

[0015] Example 4: Based on Example 3, a second threaded hole is provided on the outer cylindrical surface of one end of the coupling 3. A first set screw is provided in the second threaded hole, and the first set screw is arranged corresponding to the center of the second plane. The first set screw can press against the first plane. This invention uses a second threaded hole on the outer cylindrical surface of the coupling, and the first set screw in the second threaded hole presses against the first plane, fixing the coupling mounting shaft inside the coupling.

[0016] Example 5: Based on Example 4, a third plane is provided at the other end of the first through hole, and a fourth plane is provided on the input shaft of the encoder 4. The fourth plane and the third plane are fitted together for installation. This invention uses the fourth plane on the encoder input shaft to fit with the third plane of the first through hole of the coupling, thereby achieving the positioning and installation of the encoder input shaft and the coupling.

[0017] Example 6: Based on Example 5, a third screw hole is provided on the outer cylindrical surface of the other end of the coupling 3. A second setter screw is provided in the third screw hole, and the second setter screw is arranged corresponding to the center of the third plane. The second setter screw can press against the fourth plane. This invention uses a third screw hole on the outer cylindrical surface of the coupling, with the second setter screw in the third screw hole pressing against the fourth plane to fix the encoder's input shaft inside the coupling.

[0018] Example 7: Based on Example 5, the second and third planes are arranged at a 180° angle. In this invention, the second and third planes are arranged at a 180° angle. When the two set screws symmetrically tighten the shaft from opposite sides, the resulting compressive forces are equal in magnitude and opposite in direction, balancing each other and preventing additional bending moments on the shaft. This ensures a good stress state for the shaft, avoiding unnecessary deformation and stress concentration, and guaranteeing the stability and reliability of the connection. The 180° symmetrical arrangement helps to accurately position the coupling mounting shaft and encoder on the shaft's centerline, making it less prone to eccentricity or misalignment, thus ensuring transmission accuracy.

[0019] Example 8: Based on Example 6, the encoder mounting bracket 5 is a barrel structure with one open end. The open end of the barrel structure has an annular flange with several second through holes evenly distributed around the circumference. The end face of the motor drive shaft 1 has several fourth screw holes evenly distributed around the circumference. The second through holes and fourth screw holes are arranged in a one-to-one correspondence. A first screw is installed in each of the second through holes and connects to the fourth screw hole. This invention uses a barrel-shaped encoder mounting bracket. The annular flange at the open end of the barrel structure is connected to the fourth screw holes on the end face of the motor drive shaft via several circumferentially distributed first screws, thus fixing the encoder mounting bracket to the motor drive shaft.

[0020] Example 9: Based on Example 8, the bottom surface of the closed end of the barrel structure is provided with several third through holes evenly distributed around the circumference. The base of the encoder 4 is provided with several fifth screw holes evenly distributed around the circumference. The third through holes and the fifth screw holes are arranged in a one-to-one correspondence. A second screw is installed in the fifth through hole, and the second screw is connected to the fifth screw hole. In this invention, the bottom surface of the closed end of the barrel structure is connected to the fifth screw holes on the encoder base through several second screws evenly distributed around the circumference, thereby fixing the encoder mounting bracket to the encoder.

[0021] Example 10: Based on Example 8, the outer ring of the barrel structure has two opening slots, which are respectively arranged to correspond to the first set screw and the second set screw. This invention, by setting opening slots on the outer ring of the barrel structure to correspond to the first set screw and the second set screw, not only allows the first set screw to lock the coupling mounting shaft and the second set screw to lock the encoder input shaft, but also allows for fine-tuning of the coupling through the opening slots.

[0022] In practice, the coupling mounting shaft 2 and the motor drive shaft 1 are assembled. A dial indicator is used to confirm that the coupling mounting shaft 2 and the motor drive shaft 1 are concentric. The encoder mounting bracket 5 and the encoder 4 are pre-installed. One end of the coupling 3 is inserted into the coupling mounting shaft 2, and the first set screw at this end is tightened. Then, the coupling bracket 5 is installed on the end face of the motor drive shaft 1. At the same time, the input shaft of the encoder 4 is inserted into the other end of the coupling 3, and the second set screw at this end is tightened to ensure that the coupling mounting shaft 2 and the input shaft of the encoder 4 in the coupling 3 are completely fixed. During the assembly, debugging, and operation of the equipment, it is confirmed that there is no obvious eccentricity or vibration during the rotation of the coupling 3. Minor adjustments are made. The equipment is automatically tested to confirm that the angle of the washing machine body is correct every time it starts and stops.

[0023] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A rotation angle monitoring structure for a tunnel-type washing machine, comprising a motor, characterized in that: The output end of the motor is provided with a motor drive shaft (1), and a coupling mounting shaft (2) is provided at the center of the end face of the motor drive shaft (1). The coupling mounting shaft (2) is coaxial with the motor drive shaft (1). The coupling mounting shaft (2) is connected to the encoder (4) through a coupling (3). The encoder (4) is installed at one end of the encoder mounting bracket (5), and the other end of the encoder mounting bracket (5) is connected to the end face of the motor drive shaft (1).

2. The rotation angle monitoring structure for a tunnel-type washing machine according to claim 1, characterized in that: The coupling mounting shaft (2) has a threaded section at one end, and the end face of the motor drive shaft (1) has a countersunk hole at the center. The small end of the countersunk hole is the first threaded hole, and the threaded section is connected to the first threaded hole.

3. The rotation angle monitoring structure for a tunnel-type washing machine according to claim 1, characterized in that: The coupling mounting shaft (2) has a first plane on its other cylindrical surface, and the coupling (3) has a first through hole. One end of the first through hole has a second plane, and the first plane and the second plane are fitted together for installation.

4. The rotation angle monitoring structure for a tunnel-type washing machine according to claim 3, characterized in that: A second screw hole is provided on the outer cylindrical surface of one end of the coupling (3), and a first set screw is provided in the second screw hole. The first set screw is arranged corresponding to the center of the second plane, and the first set screw can press the first plane.

5. The rotation angle monitoring structure for a tunnel-type washing machine according to claim 4, characterized in that: The other end of the first through hole is provided with a third plane, and the input shaft of the encoder (4) is provided with a fourth plane, which is installed in conjunction with the third plane.

6. The rotation angle monitoring structure for a tunnel-type washing machine according to claim 5, characterized in that: A third screw hole is provided on the outer cylindrical surface of the other end of the coupling (3), and a second set screw is provided in the third screw hole. The second set screw is arranged corresponding to the center of the third plane, and the second set screw can press the fourth plane.

7. The rotation angle monitoring structure for a tunnel-type washing machine according to claim 5, characterized in that: The second plane and the third plane are arranged at a 180° angle.

8. The rotation angle monitoring structure for a tunnel-type washing machine according to claim 6, characterized in that: The encoder mounting bracket (5) is a barrel structure with one open end. The open end of the barrel structure is provided with an annular flange. Several second through holes are evenly distributed around the circumference on the annular flange. Several fourth screw holes are evenly distributed around the circumference on the end face of the motor drive shaft (1). The second through holes and the fourth screw holes are arranged in a one-to-one correspondence. A first screw is provided in the second through hole and is connected to the fourth screw hole.

9. The rotation angle monitoring structure for a tunnel-type washing machine according to claim 8, characterized in that: The bottom surface of the closed end of the barrel structure is provided with several third through holes evenly distributed around the circumference. The base of the encoder (4) is provided with several fifth screw holes evenly distributed around the circumference. The third through holes and the fifth screw holes are arranged in a one-to-one correspondence. A second screw is provided in the fifth through hole, and the second screw is connected to the fifth screw hole.

10. The rotation angle monitoring structure for a tunnel-type washing machine according to claim 8, characterized in that: The outer ring of the barrel structure has two opening slots, which are respectively arranged to correspond to the first set screw and the second set screw.

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