Helicopter tail rotor blade mounting angle measuring platform

Abstract

The utility model provides a helicopter tail rotor blade mounting angle measuring platform, which comprises a lateral reference stop block 1, a lateral reference platform 2, a longitudinal reference stop block 3, a longitudinal reference platform 4, a tail rotor reference surface 5 and a longitudinal reference line 6, and is characterized in that the lateral reference stop block 1 is of a square structure and is positioned at the top end of the rear part of the helicopter tail rotor blade mounting angle measuring platform; the faces, facing the front portion of the measuring platform, of the lateral reference stop blocks 1 are reference faces of the lateral reference stop blocks 1, and the reference faces of the two lateral reference stop blocks 1 are located in the same plane and arranged on the two sides of the upper end face of the helicopter tail rotor blade installation angle measuring platform respectively. The top surfaces of the lateral reference platforms 2 are reference surfaces of the lateral reference platforms 2, the reference surfaces of the two lateral reference platforms 2 are located in the same plane, and the reference surfaces of the lateral reference platforms 2 are connected and perpendicular to the reference surface of the lateral reference stop block 1 below the lateral reference stop block 1; and two opposite surfaces on the inner side of the lateral reference platform 2 are longitudinal reference stop blocks 3.

Description

Technical Field

[0001] The invention belongs to the technical field of design of a helicopter tail rotor blade installation angle measurement platform and relates to a helicopter tail rotor blade installation angle measurement platform. Background Art

[0002] The mounting angle of a helicopter's tail rotor blade is crucial to helicopter control. Due to its curved shape, there is no flat surface to measure the mounting angle. Currently, when measuring the mounting angle of a helicopter's tail rotor blade, a quadrant is usually used to roughly measure the angle. This method is cumbersome and inefficient, and has low measurement accuracy. Summary of the Invention

[0003] The present application provides a helicopter tail rotor blade installation angle measurement platform, which can solve the problem of low efficiency in performing rough installation angle measurement.

[0004] Technical solution: A helicopter tail rotor blade installation angle measurement platform includes a lateral reference block 1, a lateral reference platform 2, a longitudinal reference block 3, a longitudinal reference platform 4, a tail rotor reference plane 5, and a longitudinal reference line 6, wherein:

[0005] The lateral reference stopper 1 is a square structure and is located at the rear top end of the helicopter tail rotor blade mounting angle measurement platform; the surface of the lateral reference stopper 1 facing the front of the measurement platform is the reference surface of the lateral reference stopper 1, and the reference surfaces of the two lateral reference stoppers 1 are in the same plane and are respectively arranged on both sides of the upper end surface of the helicopter tail rotor blade mounting angle measurement platform;

[0006] The top surface of the lateral reference platform 2 is the reference surface of the lateral reference platform 2. The reference surfaces of the two lateral reference platforms 2 are in the same plane and are below the lateral reference stopper 1. The reference surfaces thereof are connected to and perpendicular to the reference surface of the lateral reference stopper 1.

[0007] The two opposite surfaces on the inner side of the lateral reference platform 2 are longitudinal reference blocks 3. The surfaces of the two longitudinal reference blocks 3 are parallel to each other and perpendicular to the reference plane of the lateral reference block 1 and the reference plane of the lateral reference platform 2.

[0008] The longitudinal reference platform 4 is located below the reference plane of the lateral reference platform 2, is connected to the two longitudinal reference blocks 3, and is parallel to the lateral reference platform 2;

[0009] The tail rotor reference plane 5 is at the bottom of the helicopter tail rotor blade mounting angle measurement platform. The tail rotor reference planes 5 on both sides are in the same plane, perpendicular to the reference plane of the lateral reference stop 1, and parallel to the reference plane of the lateral reference platform 2; the longitudinal reference line 6 is the connecting line between the longitudinal reference stop 3 and the longitudinal reference platform 4.

[0010] Specifically, the helicopter tail rotor blade installation angle measurement platform uses the longitudinal reference platform 4 as the reference plane. The function of the longitudinal reference platform 4 is to place the quadrant. The longitudinal angle of the tail rotor blade is measured and adjusted by measuring the longitudinal tilt angle of the longitudinal reference platform 4.

[0011] Specifically, the helicopter tail rotor blade installation angle measurement platform uses the edge line of the longitudinal reference platform 4, that is, the longitudinal reference line 6 as the reference line. The function of the longitudinal reference line 6 is to cooperate with the longitudinal reference platform 4 to clarify the direction of other reference surfaces.

[0012] Specifically, the longitudinal reference stop 3 is parallel to the longitudinal reference line 6, and the longitudinal reference stop 3 is perpendicular to the longitudinal reference platform 4; its function is to provide a reference for the quadrant when the quadrant is placed to measure the longitudinal inclination angle of the longitudinal reference platform 4 to ensure that the measuring direction of the quadrant coincides with the longitudinal direction of the longitudinal reference platform 4.

[0013] Specifically, the lateral reference platform 2 is parallel to the longitudinal reference line 6, and the lateral reference platform 2 is parallel to the longitudinal reference platform 4; its function is to place the quadrant and measure and adjust the lateral installation angle of the tail rotor blade by measuring the lateral tilt angle of the lateral reference platform 2.

[0014] Specifically, the lateral reference stop 1 is perpendicular to the longitudinal reference line 6, and the lateral reference stop 1 is perpendicular to the longitudinal reference platform 4; its function is to provide a reference for the quadrant when the quadrant is placed to measure the lateral inclination angle of the lateral reference platform 2 to ensure that the measuring direction of the quadrant coincides with the lateral direction of the lateral reference platform 2.

[0015] Specifically, the tail rotor reference plane 5 is parallel to the longitudinal reference line 6, and the tail rotor reference plane 5 is parallel to the longitudinal reference platform 4; its function is to be placed at the root of the tail rotor blade when measuring the tail rotor blade installation angle, and through the fit between the tail rotor reference plane 5 and the tail rotor blade reference plane, the longitudinal inclination angle and lateral installation angle of the tail rotor blade are converted into the longitudinal inclination angle and lateral installation angle of each reference plane of the tail rotor blade installation angle measurement platform.

[0016] Specifically, the helicopter tail rotor blade installation angle measurement platform is made of 2A12 aluminum alloy.

[0017] To sum up, the present application provides a helicopter tail rotor blade installation angle measurement platform. With the help of the matching relationship between the various reference surfaces of the helicopter tail rotor blade installation angle measurement platform, the problems of complicated operation, low efficiency and low measurement accuracy in the process of measuring the helicopter tail rotor blade installation angle are effectively solved; the present invention is easy to operate, and can improve work efficiency and measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Notes on a helicopter tail rotor blade installation angle measurement platform provided for this application Figure 1 ;

[0019] Figure 2 Notes on a helicopter tail rotor blade installation angle measurement platform provided for this application Figure 2 ;

[0020] Figure 3 This is a front view of a helicopter tail rotor blade installation angle measurement platform provided in this application;

[0021] Figure 4 This is a left view of a helicopter tail rotor blade installation angle measurement platform provided in this application;

[0022] Figure 5 A top view of a helicopter tail rotor blade installation angle measurement platform provided in this application;

[0023] Figure 6 A bottom view of a helicopter tail rotor blade installation angle measurement platform provided in this application;

[0024] Figure 7 A schematic diagram of the structure of a helicopter tail rotor blade installation angle measurement platform provided in this application Figure 1 ;

[0025] Figure 8 A schematic diagram of the structure of a helicopter tail rotor blade installation angle measurement platform provided in this application Figure 2 ;

[0026] Among them: 1- lateral reference block, 2- lateral reference platform, 3- longitudinal reference block, 4- longitudinal reference platform, 5- tail rotor reference plane, 6- longitudinal reference line. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the following embodiments. The following are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1

[0029] like Figure 1-8 As shown, the present application provides a helicopter tail rotor blade installation angle measurement platform, including a lateral reference block 1, a lateral reference platform 2, a longitudinal reference block 3, a longitudinal reference platform 4, a tail rotor reference plane 5 and a longitudinal reference line 6, wherein:

[0030] The lateral reference stopper 1 is a square structure and is located at the rear top end of the helicopter tail rotor blade mounting angle measurement platform; the surface of the lateral reference stopper 1 facing the front of the measurement platform is the reference surface of the lateral reference stopper 1, and the reference surfaces of the two lateral reference stoppers 1 are in the same plane and are respectively arranged on both sides of the upper end surface of the helicopter tail rotor blade mounting angle measurement platform;

[0031] The top surface of the lateral reference platform 2 is the reference surface of the lateral reference platform 2. The reference surfaces of the two lateral reference platforms 2 are in the same plane and are below the lateral reference stopper 1. The reference surfaces thereof are connected to and perpendicular to the reference surface of the lateral reference stopper 1.

[0032] The two opposite surfaces on the inner side of the lateral reference platform 2 are longitudinal reference blocks 3. The surfaces of the two longitudinal reference blocks 3 are parallel to each other and perpendicular to the reference plane of the lateral reference block 1 and the reference plane of the lateral reference platform 2.

[0033] The longitudinal reference platform 4 is located below the reference plane of the lateral reference platform 2, is connected to the two longitudinal reference blocks 3, and is parallel to the lateral reference platform 2;

[0034] like Figure 2 As shown, the tail rotor reference surface 5 is at the bottom of the helicopter tail rotor blade mounting angle measurement platform. The tail rotor reference surfaces 5 on both sides are in the same plane, perpendicular to the reference surface of the lateral reference block 1, and parallel to the reference surface of the lateral reference platform 2.

[0035] like Figures 3 to 6 As shown, the longitudinal reference line 6 is the connecting line between the longitudinal reference stop 3 and the longitudinal reference platform 4 .

[0036] It should be noted that the helicopter tail rotor blade installation angle measurement platform has a special-shaped structure with an ear-shaped structure at the rear top. The ear-shaped structure at the rear top of the helicopter tail rotor blade installation angle measurement platform is a lateral reference block 1.

[0037] In practical applications, the longitudinal reference platform 4 is located approximately 5 mm below the reference plane of the lateral reference platform 2 .

[0038] Furthermore, the helicopter tail rotor blade installation angle measurement platform uses the longitudinal reference platform 4 as a reference plane. The function of the longitudinal reference platform 4 is to place the quadrant, and the longitudinal angle of the tail rotor blade is measured and adjusted by measuring the longitudinal inclination angle of the longitudinal reference platform 4.

[0039] Furthermore, the helicopter tail rotor blade installation angle measurement platform uses the edge line of the longitudinal reference platform 4, that is, the longitudinal reference line 6 as the reference line. The function of the longitudinal reference line 6 is to cooperate with the longitudinal reference platform 4 to clarify the direction of other reference surfaces.

[0040] Furthermore, the longitudinal reference stop 3 is parallel to the longitudinal reference line 6, and the longitudinal reference stop 3 is perpendicular to the longitudinal reference platform 4; its function is to provide a reference for the quadrant when the quadrant is placed to measure the longitudinal inclination angle of the longitudinal reference platform 4 to ensure that the measuring direction of the quadrant coincides with the longitudinal direction of the longitudinal reference platform 4.

[0041] Furthermore, the lateral reference platform 2 is parallel to the longitudinal reference line 6, and the lateral reference platform 2 is parallel to the longitudinal reference platform 4; its function is to place the quadrant and measure and adjust the lateral installation angle of the tail rotor blade by measuring the lateral tilt angle of the lateral reference platform 2.

[0042] Furthermore, the lateral reference stop 1 is perpendicular to the longitudinal reference line 6, and the lateral reference stop 1 is perpendicular to the longitudinal reference platform 4; its function is to provide a reference for the quadrant when the quadrant is placed to measure the lateral inclination angle of the lateral reference platform 2 to ensure that the measuring direction of the quadrant coincides with the lateral direction of the lateral reference platform 2.

[0043] Furthermore, the tail rotor reference plane 5 is parallel to the longitudinal reference line 6, and the tail rotor reference plane 5 is parallel to the longitudinal reference platform 4; its function is to be placed at the root of the tail rotor blade when measuring the tail rotor blade installation angle, and through the fit between the tail rotor reference plane 5 and the tail rotor blade reference plane, the longitudinal inclination angle and lateral installation angle of the tail rotor blade are converted into the longitudinal inclination angle and lateral installation angle of each reference plane of the tail rotor blade installation angle measurement platform.

[0044] Furthermore, the helicopter tail rotor blade mounting angle measurement platform is made of 2A12 aluminum alloy.

[0045] Example 2

[0046] The present application provides a method for measuring and adjusting the tail rotor installation angle using a helicopter tail rotor blade installation angle measurement platform, comprising:

[0047] Step 1: Lift the helicopter up and measure it to a horizontal position;

[0048] Step 2: Rotate the tail rotor blade to be measured until it is visually close to the horizontal position;

[0049] Step 3: Place the helicopter tail rotor blade installation angle measurement platform at the root of the tail rotor blade to be measured, so that the arc surface at the bottom of the helicopter tail rotor blade installation angle measurement platform fits in with the tail rotor blade, and the tail rotor reference plane 5 fits in with the tail rotor blade reference plane;

[0050] Step 4: Place the quadrant on the longitudinal reference platform 4 and align the side of the quadrant with the longitudinal reference stop 3;

[0051] Step 5: The current quadrant reading is the longitudinal tilt angle of the tail rotor blade to be measured. Rotate the tail rotor blade according to the quadrant reading so that the longitudinal tilt angle of the tail rotor blade to be measured is 0.

[0052] Step 6: Place the quadrant on the lateral reference platform 2 and align the side of the quadrant with the lateral reference stop 1;

[0053] Step 7: The current quadrant reading is the lateral installation angle of the tail rotor blade to be measured. Adjust the length of the tail rotor blade's pitch rod according to the quadrant reading to adjust the tail rotor blade's installation angle.

[0054] To sum up, the present application provides a helicopter tail rotor blade installation angle measurement platform. With the help of the matching relationship between the various reference surfaces of the helicopter tail rotor blade installation angle measurement platform, the problems of complicated operation, low efficiency and low measurement accuracy in the process of measuring the helicopter tail rotor blade installation angle are effectively solved; the present invention is easy to operate, and can improve work efficiency and measurement accuracy.

Claims

1. A helicopter tail rotor blade installation angle measurement platform, characterized in that: The invention comprises a lateral reference block (1), a lateral reference platform (2), a longitudinal reference block (3), a longitudinal reference platform (4), a tail rotor reference plane (5) and a longitudinal reference line (6), wherein: The lateral reference stopper (1) is a square structure and is located at the rear top end of the helicopter tail rotor blade installation angle measurement platform; the surface of the lateral reference stopper (1) facing the front of the measurement platform is the reference surface of the lateral reference stopper (1); the reference surfaces of the two lateral reference stoppers (1) are in the same plane and are respectively arranged on both sides of the upper end surface of the helicopter tail rotor blade installation angle measurement platform; The top surface of the lateral reference platform (2) is the reference surface of the lateral reference platform (2), and the reference surfaces of the two lateral reference platforms (2) are in the same plane, below the lateral reference block (1), and their reference surfaces are connected to and perpendicular to the reference surface of the lateral reference block (1); Two opposite surfaces on the inner side of the lateral reference platform (2) are longitudinal reference blocks (3), and the surfaces of the two longitudinal reference blocks (3) are parallel to each other and perpendicular to the reference surface of the lateral reference block (1) and the reference surface of the lateral reference platform (2); The longitudinal reference platform (4) is located below the reference plane of the lateral reference platform (2), is connected to the two longitudinal reference blocks (3), and is parallel to the lateral reference platform (2); The tail rotor reference plane (5) is located at the bottom of the helicopter tail rotor blade mounting angle measurement platform. The tail rotor reference planes (5) on both sides are located in the same plane, are perpendicular to the reference plane of the lateral reference block (1), and are parallel to the reference plane of the lateral reference platform (2). The longitudinal reference line (6) is a connecting line between the longitudinal reference block (3) and the longitudinal reference platform (4).

2. The helicopter tail rotor blade installation angle measurement platform according to claim 1, characterized in that: The helicopter tail rotor blade installation angle measurement platform uses the longitudinal reference platform (4) as a reference surface. The longitudinal reference platform (4) is used to place a quadrant. The longitudinal angle of the tail rotor blade is measured and adjusted by measuring the longitudinal tilt angle of the longitudinal reference platform (4).

3. The helicopter tail rotor blade installation angle measurement platform according to claim 1, characterized in that: The helicopter tail rotor blade installation angle measurement platform uses the edge line of the longitudinal reference platform (4), that is, the longitudinal reference line (6) as the reference line. The function of the longitudinal reference line (6) is to cooperate with the longitudinal reference platform (4) to clarify the direction of other reference surfaces.

4. The helicopter tail rotor blade installation angle measurement platform according to claim 1, characterized in that: The longitudinal reference stopper (3) is parallel to the longitudinal reference line (6), and the longitudinal reference stopper (3) is perpendicular to the longitudinal reference platform (4); Its function is to provide a reference for the quadrant when the quadrant is placed to measure the longitudinal inclination angle of the longitudinal reference platform (4) to ensure that the measuring direction of the quadrant coincides with the longitudinal direction of the longitudinal reference platform (4).

5. The helicopter tail rotor blade installation angle measurement platform according to claim 1, characterized in that: The lateral reference platform (2) is parallel to the longitudinal reference line (6), and the lateral reference platform (2) is parallel to the longitudinal reference platform (4); its function is to place a quadrant instrument, and to measure and adjust the lateral installation angle of the tail rotor blade by measuring the lateral tilt angle of the lateral reference platform (2).

6. The helicopter tail rotor blade installation angle measurement platform according to claim 1, characterized in that: The lateral reference stopper (1) is perpendicular to the longitudinal reference line (6), and the lateral reference stopper (1) is perpendicular to the longitudinal reference platform (4); its function is to provide a reference for the quadrant when the quadrant is placed to measure the lateral tilt angle of the lateral reference platform (2) to ensure that the measuring direction of the quadrant coincides with the lateral direction of the lateral reference platform (2).

7. The helicopter tail rotor blade installation angle measurement platform according to claim 1, characterized in that: The tail rotor reference plane (5) is parallel to the longitudinal reference line (6), and the tail rotor reference plane (5) is parallel to the longitudinal reference platform (4); its function is to be placed at the root of the tail rotor blade when measuring the tail rotor blade installation angle, and through the fitting of the tail rotor reference plane (5) and the tail rotor blade reference plane, the longitudinal tilt angle and lateral installation angle of the tail rotor blade are converted into the longitudinal tilt angle and lateral installation angle of each reference plane of the tail rotor blade installation angle measurement platform.

8. The helicopter tail rotor blade installation angle measurement platform according to claim 1, characterized in that: The helicopter tail rotor blade installation angle measurement platform is made of 2A12 aluminum alloy.

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