Measuring clamp for checking angular displacement output of collector ring assembly

Abstract

The utility model relates to the technical field of helicopter anti-icing and de-icing product assembly, in particular to a measuring clamp for checking the angular displacement output of a collector ring assembly, which comprises a main body, a pin, a pressing plate, a pressing plate screw, an adjusting rod, an adjusting block, a fastening screw, a base, a horizontal plate and a horizontal bubble. The measuring clamp is easy and convenient to operate and ingenious in thought, all output angles of the collector ring assembly are kept on the same horizontal plane by adjusting the spirit bubble installed on the base, accurate measurement of the angular displacement output angle precision is achieved, and it is ensured that the angular displacement signal precision output by the collector ring assembly meets the requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of helicopter anti-icing product assembly, in particular to a measuring fixture for checking the angular displacement output of a collector ring assembly. Background Art

[0002] When a helicopter's main rotor blades fold, the slip ring assembly must provide precise blade angle data to precisely control the blade's rotation angle. To ensure that the slip ring assembly's output angular displacement meets the required accuracy, a measuring fixture is required to precisely measure the slip ring assembly's output angular displacement accuracy. Utility Model Content

[0003] The purpose of the utility model is to provide a fixture for measuring the angular displacement output angle accuracy of a slip ring assembly, so as to effectively realize the precise measurement of the angular displacement accuracy output by the slip ring assembly.

[0004] The technical solution of the utility model is:

[0005] A measuring fixture for checking the angular displacement output of a slip ring assembly is provided, the measuring fixture comprising a main body 1, a pin 2, a pressure plate 3, a pressure plate screw 4, an adjustment rod 5, an adjustment block 6, a fastening screw 7, a base 8, a leveling plate 10, and a leveling bubble 11;

[0006] The collector ring assembly 12 has a double-layer sleeve structure, with the inner layer being the rotor assembly 16 and the outer layer being the stator assembly 15. The rotor assembly 16 and the stator assembly 15 are supported by a bearing 14. An axial opening 13 is provided in an annular direction at one end of the rotor assembly 16.

[0007] The main body 1 is a drum, the rear end of which has a flange, which can be coaxially mounted with a rotary drive device through the flange. The outer wall of the drum is provided with the pin protruding radially; the drum is sleevedly connected to the collecting ring assembly, and the rotor assembly 16 is sleeved on the drum so that the pin is clamped into the axial opening 13; a pressure plate is provided at the front end of the drum, which is connected to the drum via a pressure plate screw 4. The pressure plate is used to limit the axial position of the rotor assembly 16, so that the rotor assembly and the drum are fixedly connected and can rotate as a whole;

[0008] The adjusting rod 5 is vertically mounted on the base 8, the adjusting block 6 is slidably sleeved on the adjusting rod, and the fastening screw 7 can fix the adjusting block 6 to the adjusting rod 5; the horizontal plate 10 is fixedly connected to the adjusting block 6, and the horizontal bubble 11 is mounted on the horizontal plate 10; the horizontal plate 10 has an end groove; the end face of the rotor assembly 15 is provided with a boss, and the groove can be locked with the boss to prevent the rotor assembly from rotating.

[0009] Furthermore, the groove is provided with a locking screw 9 for fixing the groove to the boss. Furthermore, the locking screw is a knurled screw.

[0010] Furthermore, the pressure plate screw is a hexagon socket screw 4.

[0011] Furthermore, the bearings are in two groups.

[0012] Furthermore, the rotating drum has a central threaded hole, and the pressure plate screw matches the central threaded hole.

[0013] When measuring the starting point (0°) of the angular displacement output of the collector ring assembly, adjust the adjusting screw 3 so that the bubble of the spirit level is located in the middle, and then set the output angle of the dividing head 1 to 0°. When measuring any angle of the angular displacement output of the collector ring assembly subsequently, it is necessary to ensure that the bubble of the spirit level is located in the middle during measurement to ensure the accuracy of the measurement results.

[0014] The beneficial effects of this utility model are: The measuring fixture is easy to operate and has an ingenious design. By adjusting the level mounted on the base, the various output angles of the slip ring assembly are kept on the same horizontal plane, enabling precise measurement of the angular displacement output angle accuracy. This ensures that the angular displacement signal output by the slip ring assembly meets the required accuracy. This ensures that when the helicopter main rotor blades are folded, the angular displacement signal output by the slip ring assembly accurately indicates the blade position, allowing the blades to fold smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view and a side view of the measuring fixture of the utility model;

[0016] Figure 2 This is a physical picture of the test fixture of the utility model;

[0017] Figure 3 It is the front view and top view of the slip ring assembly;

[0018] Figure 4 This is the A-A cross-sectional view and physical picture of the collector ring assembly;

[0019] Figure 5 This is a schematic diagram of the slip ring assembly installed on the test fixture;

[0020] Figure 6 It is a structural diagram of the collector ring assembly.

[0021] Among them, 1: main body, 2: pin, 3: pressure plate, 4: pressure plate screw, 5: adjusting rod, 6: adjusting block, 7: fastening screw, 8: base, 9: knurled screw, 10: horizontal plate, 11: horizontal bubble, 12: collecting ring assembly, 13: axial opening, 14: bearing, 15: stator assembly, 16: rotor assembly. DETAILED DESCRIPTION

[0022] The disclosed examples will be described more fully with reference to the accompanying drawings, in which some (but not all) of the disclosed examples are shown. In fact, many different examples can be described and these examples should not be construed as limited to the examples set forth herein. Instead, these examples are described so that this disclosure will be thorough and complete and will fully convey the scope of the disclosure to those skilled in the art.

[0023] Example:

[0024] A measuring fixture for checking the angular displacement output of a slip ring assembly is provided, the measuring fixture comprising a main body 1, a pin 2, a pressure plate 3, a pressure plate screw 4, an adjustment rod 5, an adjustment block 6, a fastening screw 7, a base 8, a leveling plate 10, and a leveling bubble 11;

[0025] The collector ring assembly 12 has a double-layer sleeve structure, with the inner layer being the rotor assembly 16 and the outer layer being the stator assembly 15. The rotor assembly 16 and the stator assembly 15 are supported by a bearing 14. An axial opening 13 is provided in an annular direction at one end of the rotor assembly 16.

[0026] The main body 1 is a drum, the rear end of which has a flange, which can be coaxially mounted with a rotary drive device through the flange. The outer wall of the drum is provided with the pin protruding radially; the drum is sleevedly connected to the collecting ring assembly, and the rotor assembly 16 is sleeved on the drum so that the pin is clamped into the axial opening 13; a pressure plate is provided at the front end of the drum, which is connected to the drum via a pressure plate screw 4. The pressure plate is used to limit the axial position of the rotor assembly 16, so that the rotor assembly and the drum are fixedly connected and can rotate as a whole;

[0027] The adjusting rod 5 is vertically mounted on the base 8, the adjusting block 6 is slidably sleeved on the adjusting rod, and the fastening screw 7 can fix the adjusting block 6 to the adjusting rod 5; the horizontal plate 10 is fixedly connected to the adjusting block 6, and the horizontal bubble 11 is mounted on the horizontal plate 10; the horizontal plate 10 has an end groove; the end face of the rotor assembly 15 is provided with a boss, and the groove can be locked with the boss to prevent the rotor assembly from rotating.

[0028] When detecting the angular displacement output angle accuracy of the slip ring assembly, it is required that the angular displacement output angle accuracy should be within ±0.5° when the slip ring assembly rotates forward and reverse.

[0029] The first step is to install and fix the main body 1 on the digital display dividing head through the installation slot on the main body 1;

[0030] The second step is to pass the bushing 13 in the collector ring assembly 12 through the pin 2 and install it on the main body 1. Use the hexagon socket screw 3 and the pressure plate 4 to fix the rotor assembly 16 in the collector ring assembly 12.

[0031] The third step is to install the adjusting rod 5 on the base 8, put the adjusting block 6 on the adjusting rod, and fix the adjusting block 6 on the adjusting rod 5 with the nut 7;

[0032] Step 4: Install the horizontal bulb 11 on the horizontal plate 10, clamp the grooved end of the horizontal plate 10 on the boss on the rotor assembly 15 in the collector ring assembly 12, and fix it with one knurled screw 9. Then use two knurled screws 9 to fix the horizontal plate 10 on the adjustment block 6;

[0033] Step 5. Rotate the handle on the dividing head to make the angular displacement output angle of the collector ring assembly 0°. Adjust the two knurled screws 9 on the adjustment block 6 so that the bubble of the spirit level is located in the middle. If the angular displacement output angle of the collector ring assembly is not 0° after adjusting the knurled screws 9, rotate the handle on the dividing head again until both the collector ring assembly output angle is 0° and the bubble of the spirit level is located in the middle. Set the angle value displayed on the dividing head to 0°.

[0034] Step 6. Rotate the handle on the indexing head forward so that the angle displayed on the indexing head is 60°. Adjust the two knurled screws 9 on the adjustment block 6 so that the bubble in the spirit level is in the middle. Record the angle value output by the slip ring assembly in Table 1.

[0035] Step 7. Rotate the handle on the dividing head in the forward direction again, and make the output value of the dividing head 120°, 180°, 240°, 300°, and 360° in sequence. Adjust according to the method described in step 5 and make a record in Table 1.

[0036] Step 8. Reversely rotate the handle on the dividing head to adjust the output value of dividing head 1 to 300°, 240°, 180°, 120°, 60°, and 0° in sequence. Adjust according to the method described in step 5 and record it in Table 1.

[0037] Step 9. Observe the values recorded in Table 1. If the angular displacement output angle accuracy of the slip ring assembly at each test point is within ±0.5°, the angular displacement output angle accuracy of the slip ring assembly meets the requirements.

[0038] Table 1

[0039]

[0040] The description of various advantageous arrangements has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the examples disclosed. Many modifications and variations will be apparent to those skilled in the art. In addition, different advantageous examples may describe different advantages compared to other advantageous examples. The selected example or examples are chosen and described to best illustrate the principles of the examples, their practical application, and to enable those skilled in the art to understand the disclosure with various examples with various modifications suitable for the particular use contemplated.

Claims

1. A measuring fixture for checking the angular displacement output of a slip ring assembly, characterized by: The measuring fixture comprises a main body (1), a pin (2), a pressure plate (3), a pressure plate screw (4), an adjusting rod (5), an adjusting block (6), a fastening screw (7), a base (8), a level plate (10) and a level bubble (11); The collector ring assembly (12) has a double-layer sleeve structure, the inner layer is a rotor assembly (16), the outer layer is a stator assembly (15), and the rotor assembly (16) and the stator assembly (15) are supported by a bearing (14); an axial opening (13) is provided in an annular direction at one end of the rotor assembly (16); The main body is a rotating drum, the rear end of the rotating drum has a flange, and the flange can be coaxially installed with the rotating drive device, and the outer wall of the rotating drum is provided with the pin protruding radially; the rotating drum is connected to the collecting ring assembly, and the rotor assembly (16) is sleeved on the rotating drum, and the pin is inserted into the axial opening (13); the front end of the rotating drum is provided with a pressure plate, and the pressure plate is connected to the rotating drum through a pressure plate screw (4), and the pressure plate is used to limit the axial position of the rotor assembly (16), so that the rotor assembly is fixedly connected to the rotating drum and can rotate as a whole; The adjusting rod (5) is vertically mounted on the base (8); the adjusting block (6) is slidably sleeved on the adjusting rod; the fastening screw (7) can fix the adjusting block (6) and the adjusting rod (5); the horizontal plate (10) is fixedly connected to the adjusting block (6); the horizontal bubble (11) is mounted on the horizontal plate (10); the horizontal plate (10) has an end groove; the end face of the rotor assembly is provided with a boss, and the groove can be locked with the boss to prevent the rotor assembly from rotating.

2. A measuring fixture for checking the angular displacement output of a slip ring assembly according to claim 1, characterized in that: The groove is provided with a locking screw (9) for fixedly connecting the groove and the boss.

3. A measuring fixture for checking the angular displacement output of a slip ring assembly according to claim 2, characterized in that: The locking screw is a knurled screw.

4. A measuring fixture for checking the angular displacement output of a slip ring assembly according to claim 1, characterized in that: The pressure plate screw is a hexagon socket screw.

5. The measuring fixture for checking the angular displacement output of a slip ring assembly according to claim 1, characterized in that: The bearings are in two groups.

6. The measuring fixture for checking the angular displacement output of a slip ring assembly according to claim 1, characterized in that: The rotating drum has a central threaded hole, and the pressure plate screw matches the central threaded hole.

Images