Static balance tool for ring frame in aviation horizon sensor repairing process and balance method of static balance tool

Abstract

The invention relates to the field of aviation airborne electronic equipment repair, in particular to a ring frame static balance tool in the aviation horizon sensor repair process and a balance method of the ring frame static balance tool. The ring frame assembly is arranged on the supporting platform, fixed pulley devices are arranged at the two ends of the ring frame assembly, and the weights are connected with the ring frame assembly through thin wires. The balancing method comprises the following specific steps that 1, a workpiece is taken; step 2, stopping; step 3, locking the pitching ring; step 4, keeping horizontal; step 5, adjusting weights; step 6, weight balancing; step 7, error reduction; 8, the annular frame assembly is rotated by 90 degrees; step 9, locking the inner ring; and step 10, installing the ring stand assembly back to the aviation horizon sensor. Compared with the prior art, the static balance state is quantified, and the precision and reliability of static balance adjustment are guaranteed through static balance adjustment of two mutually perpendicular positions in the ring frame assembly.

Description

Technical Field

[0001] The invention relates to the field of repairing aviation airborne electronic equipment, in particular to a ring frame static balancing tool and a balancing method thereof in the process of repairing an aviation horizon. Background Art

[0002] The aviation attitude indicator is a platform sensor that displays the tilt angle, pitch angle, and sideslip direction of the aircraft during flight. It generally includes a power system, a servo system, and a fault indication part, of which the servo system is the main part. The servo system is mainly composed of a platform ring frame structure and a gyro assembly. The gyro assembly has a fixed axis and provides an axial reference. The platform ring frame structure is controlled by servo control, and the initial state remains coincident with the local geographic coordinate system. When the attitude changes, the random body moves, and the change signal is processed and output to the display panel.

[0003] The aviation attitude instrument gyroscope is a rigid gyroscope, which has high requirements for the static balance of the working environment; the platform ring frame structure consists of an inner ring, a pitch ring, and an outer ring, and both the inner ring and the outer ring are tilt rings. Since the follow-up system of the aviation attitude instrument is an open-loop control without feedback and self-adjustment functions, it is necessary to perform high-precision static balance control and adjustment during the repair process to ensure the stability of the signal display when it is working on the aircraft.

[0004] The commonly used method for adjusting the static balance of the platform ring frame is to observe whether the ring frame deviates from its axial position through visual inspection, and then adjust the corresponding screw or counterweight to achieve static balance adjustment. This adjustment method cannot quantify the static balance state and it is difficult to determine the static balance adjustment accuracy. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a ring frame static balancing tool and a balancing method thereof during the repair process of an aviation attitude meter.

[0006] A ring frame static balance tool for repairing an aviation attitude meter comprises a support platform, a ring frame assembly arranged on the support platform, fixed pulley devices arranged at both ends of the ring frame assembly, and weights connected to the ring frame assembly through fine wires.

[0007] The ring frame assembly comprises a plurality of groups of ring frames and wedge-shaped sponges used for locking other ring frames except the ring frames to be adjusted.

[0008] As another improvement of the present invention, a balancing method for a ring frame static balancing tool during the repair of an aviation attitude meter is proposed, and the specific steps are as follows:

[0009] Step 1: Take out the ring frame assembly of the aviation horizon and fix it;

[0010] Step 2, stop: insert two pieces of stop foam into the ball rolling track of the aviation horizon, fix the ball in the center of the track, and make the ball immobile;

[0011] Step 3: Lock the pitch ring: Insert a wedge-shaped sponge between the pitch ring and the outer ring, lock the pitch ring, and start adjusting the inner ring;

[0012] Step 4, keep horizontal: keep the ring frame assembly horizontal and able to rotate freely, in the horizontal direction, two sides of the ring frame assembly are connected with a weight through a fixed pulley device;

[0013] Step 5, adjust the weights: adjust the weights to keep them at the same height, and record the weight difference;

[0014] Step 6, counterweight: If the weight difference is greater than 3g, it means that the static balance of the ring frame assembly in this direction is unqualified, and the corresponding screw or counterweight should be adjusted;

[0015] Step 7, reduce the error: repeat steps 5 to 6 until the weight difference is less than 3g;

[0016] Step 8: Rotate the ring frame assembly 90° so that it is in a vertical position and can rotate freely. In the horizontal direction, connect a weight to each side of the ring frame assembly through a fixed pulley device, and repeat step 7;

[0017] Step 9, lock the inner ring: insert a wedge-shaped sponge between the inner ring and the pitch ring, lock the inner ring, lock the outer ring at the same time, start adjusting the pitch ring, and repeat steps 4 to 8;

[0018] Step 10. Install the ring frame assembly back to the aviation horizon, use the aviation horizon test equipment to test its drift speed, and verify the static balance adjustment result. If the drift speed is unqualified, repeat steps 1 to 9.

[0019] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention quantifies the static balance state, and ensures the accuracy and reliability of the static balance adjustment through the static balance adjustment of two mutually perpendicular positions in the ring frame assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the process structure of the present invention;

[0023] Figure numerals: 1. support platform; 2. weight; 3. inner ring; 4. wedge-shaped sponge; 5. support frame; 6. fixed pulley; 7. pitch ring; 8. outer ring. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below.

[0025] like Figure 1 and Figure 2 As shown, a ring frame static balancing tool for the repair process of an aviation attitude meter includes a support platform 1, a ring frame assembly arranged on the support platform 1, fixed pulley devices arranged at both ends of the ring frame assembly, and a weight 2 connected to the ring frame assembly through a thin wire, which is used to improve the static balancing adjustment accuracy of the ring frame and the reliability of the repair of the aviation attitude meter.

[0026] The ring frame assembly comprises a plurality of ring frames and a wedge-shaped sponge 4 for locking the other ring frames except the ring frame to be adjusted. The wedge-shaped sponge 4 is used to prevent the other ring frames from shaking and affecting the static balance during the adjustment process.

[0027] Specifically, the several sets of ring frames of the present invention include a pitch ring 7, an outer ring 8, and an inner ring 3. The outer ring 8 is directly fixed on the support platform 1, and because it is controlled and locked by gears inside the aviation attitude instrument, there is no need to adjust the static balance.

[0028] like Figure 1 As shown, the fixed pulley device includes a support frame 5 and a fixed pulley 6 arranged on the support frame 5, which is used to ensure the stability of the weight 2 during the static balance test and adjustment process, and quantify the static balance state in the form of a weight difference of the weight 2.

[0029] The thin wire between the ring frame assembly and the weight 2 is guided and matched by the fixed pulley 6. Compared with the prior art, the present invention quantifies the static balance state and ensures the accuracy and reliability of the static balance adjustment through the static balance adjustment of two mutually perpendicular positions in the ring frame assembly.

[0030] Specifically, when adjusting the static balance of the inner ring 3 , the wedge-shaped sponge 4 is placed between the pitch ring 7 and the outer ring 8 to lock the pitch ring 7 .

[0031] Specifically, when adjusting the static balance of the pitch ring 7 , the wedge-shaped sponge 4 is placed between the inner ring 3 and the pitch ring 7 to lock the inner ring 3 .

[0032] A balancing method for a ring frame static balancing tool during the repair of an aviation attitude instrument. Figure 1 The reference numeral a in the figure is an aviation attitude meter. The aviation attitude meter test equipment is used to test the drift speed of the attitude meter before and after static balance adjustment. The drift speed is a performance index of the aviation attitude meter and can reflect the adjustment effect of static balance. The specific steps are as follows:

[0033] Step 1: Take out the ring frame assembly of the aviation horizon and fix it;

[0034] Step 2, stop: insert two pieces of stop foam into the ball rolling track of the aviation horizon, fix the ball in the center of the track, make the ball immobile, and prevent the ball from hitting the ring frame assembly during the adjustment process, resulting in unstable static balance during the adjustment process;

[0035] Step 3, locking the pitch ring 7: insert the wedge-shaped sponge 4 between the pitch ring 7 and the outer ring 8, lock the pitch ring 7, and start adjusting the inner ring 3;

[0036] Step 4, keep horizontal: keep the ring frame assembly horizontal and able to rotate freely, in the horizontal direction, two sides of the ring frame assembly are each connected with a weight 2 through a fixed pulley device;

[0037] Step 5, adjust the weight: adjust the weight of weight 2 so that the weight remains at the same height, and record the weight difference of weight 2;

[0038] Step 6, counterweight: If the weight difference of weight 2 is greater than 3g, it means that the static balance of the ring frame assembly in this direction is unqualified, and the corresponding screw or counterweight should be adjusted;

[0039] Step 7, reduce the error: repeat steps 5 to 6 until the weight difference of weight 2 is less than 3g;

[0040] Step 8, rotate the ring frame assembly 90° so that it is in a vertical position and can rotate freely. In the horizontal direction, connect a weight 2 to each side of the ring frame assembly through a fixed pulley device, and repeat step 7;

[0041] Step 9, lock the inner ring 3: insert the wedge-shaped sponge 4 between the inner ring 3 and the pitch ring 7, lock the inner ring 3, lock the outer ring 8 at the same time, start adjusting the pitch ring 7, and repeat steps 4 to 8;

[0042] Step 10. Install the ring frame assembly back to the aviation horizon, use the aviation horizon test equipment to test its drift speed, and verify the static balance adjustment result. If the drift speed is unqualified, repeat steps 1 to 9.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A ring frame static balance tool for repairing an aviation attitude meter, comprising a support platform (1), characterized in that: It also includes a ring frame assembly arranged on a supporting platform (1), fixed pulley devices arranged at both ends of the ring frame assembly, and a weight (2) connected to the ring frame assembly via a thin wire.

2. The static balancing tool for a ring frame during the repair of an aviation horizon according to claim 1, characterized in that: The ring frame assembly comprises a plurality of groups of ring frames and a wedge-shaped sponge (4) used for locking the other ring frames except the ring frame to be adjusted.

3. The static balancing tool for a ring frame during the repair of an aviation horizon according to claim 2, characterized in that: The plurality of ring frames include a pitch ring (7), an outer ring (8) and an inner ring (3).

4. The static balancing tool for a ring frame during the repair of an aviation horizon according to claim 1, characterized in that: The fixed pulley device comprises a support frame (5) and a fixed pulley (6) arranged on the support frame (5).

5. The static balancing tool for a ring frame during the repair of an aviation horizon according to claim 4, characterized in that: The thin wire between the ring frame assembly and the weight (2) is guided and matched through a fixed pulley (6).

6. The static balancing tool for a ring frame during the repair of an aviation horizon according to claim 3, characterized in that: When adjusting the static balance of the inner ring (3), the wedge-shaped sponge (4) is placed between the pitch ring (7) and the outer ring (8).

7. The static balancing tool for a ring frame during the repair of an aviation horizon according to claim 3, characterized in that: When adjusting the static balance of the pitch ring (7), the wedge-shaped sponge (4) is placed between the inner ring (3) and the pitch ring (7).

8. A balancing method for a ring frame static balancing tool during the repair of an aviation attitude meter according to any one of claims 1 to 7, characterized in that: The specific steps are as follows: Step 1: Take out the ring frame assembly of the aviation horizon and fix it; Step 2, stop: insert two pieces of stop foam into the ball rolling track of the aviation horizon, fix the ball in the center of the track, and make the ball immobile; Step 3, locking the pitch ring (7): insert a wedge-shaped sponge (4) between the pitch ring (7) and the outer ring (8), lock the pitch ring (7), and start adjusting the inner ring (3); Step 4, keeping horizontal: keep the ring frame assembly horizontal and able to rotate freely, and in the horizontal direction, connect a weight (2) to each of the two sides of the ring frame assembly through a fixed pulley device; Step 5, adjusting the weight: adjusting the weight of the weight (2) so that the weight remains at the same height, and recording the weight difference of the weight (2); Step 6, counterweight: If the weight difference of the weight (2) is greater than 3g, it means that the static balance of the ring frame assembly in this direction is unqualified, and the corresponding screw or counterweight is adjusted; Step 7, reduce the error: repeat steps 5 to 6 until the weight difference of weight (2) is less than 3g; Step 8, rotate the ring frame assembly 90° so that it is in a vertical position and can rotate freely. In the horizontal direction, a weight (2) is connected to each side of the ring frame assembly through a fixed pulley device, and step 7 is repeated; Step 9, lock the inner ring (3): insert a wedge-shaped sponge (4) between the inner ring (3) and the pitch ring (7), lock the inner ring (3), and lock the outer ring (8) at the same time, start adjusting the pitch ring (7), and repeat steps 4 to 8; Step 10. Install the ring frame assembly back to the aviation horizon, use the aviation horizon test equipment to test its drift speed, and verify the static balance adjustment result. If the drift speed is unqualified, repeat steps 1 to 9.

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