Toothed rotary transformer convenient to use automatic equipment for zero setting

Abstract

The utility model discloses a toothed rotary transformer convenient for zero setting by using automatic equipment, which comprises a motor end cover, a rotary transformer stator assembly, a fastening bolt, a rotary transformer shell, a rotary transformer stator coil, a rotary transformer signal line, a rotary transformer toothed shell, a rotary transformer shell gear structure and a zero setting mechanism, the rotary transformer toothed shell is a toothed shell arranged on the circumference of a rotary transformer shell. The utility model has the beneficial effects that the servo motor system is used as a power source for angle adjustment, compared with manual zero adjustment, the angle control of the system is very accurate, the time for repeated adjustment is reduced, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a toothed rotary transformer which is convenient for zeroing using automatic equipment. Background Art

[0002] At present, the vast majority of new energy vehicle drive motors or range extender generators at home and abroad use permanent magnet synchronous motors, which are generally equipped with a resolver, also known as a resolver. Resolvers are a common position sensor used in motor control. The function of resolvers is to accurately measure the position, speed and rotation direction of the motor rotor, transmit these signals to the motor controller, and control the motor through the software control algorithm.

[0003] The resolver zero adjustment is referred to as resolver zero adjustment, also known as zero angle calibration, motor angle calibration, resolver calibration, etc. Although the terms are different, the content and function are the same, that is, to know the angle deviation between the resolver zero position and the motor zero position, and adjust the angle position of the resolver stator to align it with the motor zero position to ensure the accuracy and efficiency of motor control.

[0004] The zero adjustment process in the motor production process in the industry today is generally done manually, which is cumbersome and prone to quality problems such as missed adjustment and wrong adjustment. For example, the method described in the Chinese patents with publication numbers CN109921574A, CN116633098A, and announcement number CN113328670B still uses manual operation for zero adjustment, but adds several devices for assistance.

[0005] According to the analysis and research of existing solutions, an important reason why the resolver zeroing process is still performed manually is that the existing resolver structure is difficult to zero using equipment, and the resolver body does not have a structure for equipment zeroing, so the operation can only be completed with the help of manual intervention. Utility Model Content

[0006] The utility model aims to overcome the shortcomings of the prior art and to solve the above technical defects by providing a toothed rotary transformer which is convenient for zeroing using automatic equipment.

[0007] The purpose of the utility model is achieved through the following technical solutions: a toothed rotary transformer that is convenient for zeroing using automatic equipment, comprising a motor end cover, a rotary transformer stator assembly, fastening bolts, a rotary transformer stator coil, a rotary transformer signal line, a rotary transformer housing, a rotary transformer housing gear structure and a zeroing mechanism;

[0008] The rotary transformer stator assembly and the rotary transformer stator coil are both arranged in the middle of the rotary transformer housing, the rotary transformer stator assembly is provided with a fastening bolt, the rotary transformer signal line is located on the rotary transformer stator coil, the zero adjustment mechanism includes a servo motor rotating system, and a rotating gear is provided on the end of the servo motor rotating system, and the rotating gear and the gear structure of the rotary transformer housing are matched with each other.

[0009] In the toothed rotary transformer of the utility model which is convenient for zeroing using automatic equipment, the rotary transformer stator assembly is arranged at the motor end cover, and the rotary transformer stator assembly is fixed with fastening bolts after being placed.

[0010] In the toothed rotary transformer of the utility model which is convenient for zeroing using automatic equipment, the height of the rotary transformer stator coil is greater than the thickness of the rotary transformer housing, an end cover locating pin is provided on the outer side of the rotary transformer housing gear structure, and the end cover locating pin cooperates with the zeroing mechanism locating hole.

[0011] In the toothed rotary transformer of the utility model which is convenient for zeroing by automatic equipment, at least one zeroing mechanism is provided.

[0012] In the toothed rotary transformer of the utility model which is convenient for zeroing using automatic equipment, the rotary transformer housing and the rotary transformer housing gear structure are interference fit.

[0013] The utility model has the following advantages:

[0014] 1. The utility model includes a motor end cover, a rotary transformer stator assembly, fastening bolts, a rotary transformer stator coil, a rotary transformer signal line, a rotary transformer housing, a rotary transformer housing gear structure and a zero adjustment mechanism;

[0015] The resolver stator assembly and the resolver stator coil are both arranged in the middle of the resolver housing, the resolver stator assembly is provided with fastening bolts, the resolver signal line is located on the resolver stator coil, the zero adjustment mechanism includes a servo motor rotating system, and a rotating gear is provided on the end of the servo motor rotating system, the rotating gear and the resolver housing gear structure cooperate with each other, and by setting an effective resolver structure, the resolver can be zeroed through automated equipment to avoid quality risks caused by manual zeroing.

[0016] 2. The utility model uses a servo motor system as the power source for adjusting the angle. Compared with manual zeroing, the angle control of the system is extremely precise, which reduces the time for repeated adjustments and improves efficiency.

[0017] 3. The utility model can solve the risks of missing zero adjustment or wrong zero adjustment in manual operation. Through the automated operation of the equipment, human intervention can be reduced, thus reducing the quality risks caused by human factors.

[0018] 4. The utility model has little impact on the installation position of the resolver and can be adapted to the existing structure of most motors. The resolver of the patented solution can be replaced with minor modifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the motor end cover in the utility model;

[0021] Figure 3 This is a schematic diagram of the rotating housing gear structure in the utility model;

[0022] Figure 4 This is a structural diagram of the positioning pin of the end cover in the utility model;

[0023] Figure 5 It is a structural schematic diagram of the zero adjustment mechanism in the utility model.

[0024] In the figure, 1. Motor end cover; 2. Resolver stator assembly; 3. Fastening bolts; 4. End cover locating pins; 5. Resolver stator coil; 6. Resolver signal line; 7. Resolver housing; 8. Zero adjustment mechanism; 9. Servo motor rotation system; 10. Resolver housing gear structure; 11. Zero adjustment mechanism locating hole; 12. Rotating gear. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings, and the protection scope of the utility model is not limited to the following:

[0026] like Figure 1~Figure 5 As shown, a toothed rotary transformer that is convenient for zeroing using automatic equipment includes a motor end cover 1, a rotary transformer stator assembly 2, a fastening bolt 3, a rotary transformer stator coil 5, a rotary transformer signal line 6, a rotary transformer housing 7, a rotary transformer housing gear structure 10 and a zeroing mechanism 8;

[0027] In this embodiment, the rotary transformer stator assembly 2 and the rotary transformer stator coil 5 are both arranged in the middle of the rotary transformer housing 7, the rotary transformer stator assembly 2 is provided with a fastening bolt 3, the rotary transformer signal line 6 is located on the rotary transformer stator coil 5, the rotary transformer signal line 6 is connected to the display, the zero adjustment mechanism 8 includes a servo motor rotating system 9, and a rotating gear 12 is provided on the end of the servo motor rotating system 9, and the rotating gear 12 and the rotary transformer housing gear structure 10 are mutually matched.

[0028] In this embodiment, the rotary transformer stator coil 5 is located in the middle of the rotary transformer housing 7, the rotary transformer stator assembly 2 is arranged at the motor end cover 1, and the rotary transformer stator assembly 2 is placed before being fixed with the fastening bolts 3.

[0029] In this embodiment, the height of the rotary transformer stator coil 5 is greater than the thickness of the rotary transformer housing 7, and an end cover locating pin 4 is provided on the outer side of the rotary transformer housing gear structure 10, and the end cover locating pin 4 cooperates with the zero adjustment mechanism locating hole 11.

[0030] In this embodiment, at least one zero adjustment mechanism 8 is provided.

[0031] In this embodiment, the resolver housing 7 and the resolver housing gear structure 10 are interference fit.

[0032] The working principle of the utility model is as follows: the outer side of the rotary transformer housing 7 is designed with a rotary transformer housing gear structure 10, and an end cover positioning pin 4 is added at the end cover. When zeroing begins, the rotary transformer stator assembly 2 is installed at the motor end cover 1, which is generally loosely fitted. After the rotary transformer is installed in the installation position, the fastening bolts 3 are placed. The fastening bolts 3 play the role of fixing the rotary transformer stator assembly 2. After the preparation work is completed, the zeroing mechanism positioning hole 11 of the equipment is inserted into the end cover positioning pin 4 of the end cover, and the zero position adjustment equipment in the field is used. The model is CYYS-RX01, and the real-time angle of the rotary transformer is adjusted. During detection, the device will display the real-time angle of the resolver on the display, and feed back the angle that needs to be adjusted to the servo motor rotation system 9. After receiving the angle value, the servo motor rotation system 9 drives the servo motor to rotate, driving the zero adjustment mechanism 8 to rotate the specified angle. Since the gears of the zero adjustment mechanism 8 can mesh with the resolver housing gear structure 10 of the resolver housing 7, the zero adjustment mechanism 8 can drive the resolver stator assembly 2 to rotate until the resolver zero position is aligned with the motor zero position, and the display shows "zero position aligned". After alignment, tighten the fastening bolts 3 to complete the adjustment process.

[0033] The resolver stator assembly 2, the resolver stator coil 5, and the resolver signal line 6 are all components assembled on the resolver housing 7. The resolver housing gear structure 10 is a characteristic description of the resolver housing 7. When the rotating gear 12 in the zeroing mechanism 8 rotates, due to the matching relationship of the gears, the rotating gear 12 in the zeroing mechanism will drive the resolver housing gear structure 10 to rotate, thereby driving the resolver housing 7 to rotate.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A toothed rotary transformer that is convenient for zeroing using automatic equipment, characterized in that: It includes a motor end cover, a rotary transformer stator assembly, fastening bolts, a rotary transformer stator coil, a rotary transformer signal line, a rotary transformer housing, a rotary transformer housing gear structure and a zero adjustment mechanism; The rotary transformer stator assembly and the rotary transformer stator coil are both arranged in the middle of the rotary transformer housing, the rotary transformer stator assembly is provided with a fastening bolt, the rotary transformer signal line is located on the rotary transformer stator coil, the zero adjustment mechanism includes a servo motor rotating system, and a rotating gear is provided on the end of the servo motor rotating system, and the rotating gear and the gear structure of the rotary transformer housing are matched with each other.

2. A toothed rotary transformer that is convenient for zeroing using automatic equipment according to claim 1, characterized in that: The rotary transformer stator coil is located in the middle of the rotary transformer housing, and the rotary transformer stator assembly is arranged at the motor end cover.

3. A toothed rotary transformer that is convenient for zeroing using automatic equipment according to claim 1, characterized in that: The height of the rotary transformer stator coil is greater than the thickness of the rotary transformer housing. An end cover locating pin is provided on the outer side of the rotary transformer housing gear structure, and the end cover locating pin cooperates with the zero adjustment mechanism locating hole.

4. A toothed rotary transformer that is convenient for zeroing using automatic equipment according to claim 1, characterized in that: The zero adjustment mechanism is provided with at least one.

5. The toothed rotary transformer that is convenient for zeroing using automatic equipment according to claim 2, characterized in that: The rotary transformer housing and the rotary transformer housing gear structure are interference fit.

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