Gyroscope rotor dynamic balance test clamp

Abstract

The utility model relates to the technical field of balance test fixtures, in particular to a gyrorotor dynamic balance test fixture which comprises a U-shaped base, fixing plates are arranged at the tops of two side arms of the base, a second screw hole is formed in the outer end of a boss, a sliding groove is formed in the inner end of the boss, an adjusting rod is arranged in the second screw hole, and a clamping seat is arranged at the inner end of the adjusting rod. A rotor is matched between the two clamping seats; according to the gyroscope rotor dynamic balance test clamp, the base with the fixing plate is arranged, external screws penetrate through the fixing holes to be combined and fixed with the corresponding dynamic balancing machine, the base can be conveniently and rapidly combined and fixed, the adjusting rod with the clamping seat is rotationally connected with the boss on the base, the clamping seat is provided with the shaft groove, and the shaft groove is clamped in the shaft groove. The device can be conveniently inserted and matched with a rotating shaft of a rotor needing to be tested, the two clamping seats realize distance adjustment matching under the rotation matching of the adjusting rod, the rotors with different widths can be stably clamped and matched, and the position of the adjusting rod is fixed through a positioning bolt under the action of friction force.

Description

TECHNICAL FIELD

[0001] The utility model relates to balance test fixture technical field, concretely is a gyro rotor dynamic balance test fixture. BACKGROUND

[0002] When the helicopter is flying, the aviation horizon instrument and the gyroscope are needed to identify the flight attitude and the flight direction, so as to achieve the purpose of safe flight. The aviation horizon instrument and the gyroscope are mainly composed of a rotor rotatable at the axis. In the work, the rotor rotates at high speed, and the angular momentum is large, so as to achieve the effect of stable pointing. After a long time of work, the rotor will be worn to different degrees, causing inaccurate indication. Therefore, the horizon instrument or the gyroscope needs to be repaired, and the rotor needs to be dynamically balanced after the repair to meet the working needs.

[0003] The utility model discloses a general turbine dynamic balance test fixture for fixing turbine assembly during dynamic balance test, including right support, base body, right bracket, right frame cover and left support, the left end of base body is fixed on the test table through left support, the right end of base body is fixed on the test table through right support, the left side of base body right support is equipped with right bracket, right bracket is equipped with right frame cover with one end hinge connection, right bracket and right frame cover are used for clamping turbine shaft of test turbine, base body is equipped with space for turbine to do dynamic balance test between right bracket and left support.

[0004] The above technical scheme has the advantages of simple structure, easy assembly, strong replaceability, simple disassembly and assembly steps, easy operation, and the disassembly function can be realized only by using an open-end wrench during the test. However, the fixture frame cannot be flexibly adjusted on both sides, and cannot adapt to the clamping test of gyro rotors with different widths. In addition, the internal balls of the general rotor clamping are easy to rotate and fly out during clamping, and the side edges are not protected, which reduces the influence of the flying out of the internal balls of the rotor rotation on the experiment. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a gyro rotor dynamic balance test fixture to solve the problems in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A gyro rotor dynamic balance test fixture, comprising a base, the base is in U shape, both sides of the base are provided with a fixed plate at the top, both sides of the base are provided with a boss near the middle of the top, a second screw hole is formed in the outer end of the boss, a sliding groove is formed in the inner end of the boss, an adjusting rod is arranged in the second screw hole, a hand wheel is arranged at the outer end of the adjusting rod, a clamping seat is arranged at the inner end of the adjusting rod, and a rotor is arranged between the two clamping seats.

[0008] A rotating shaft is arranged at the center axis of the rotor, both ends of the rotating shaft are sleeved with bearing assemblies, and the bearing assemblies comprise an inner ring seat and an outer ring sleeve sleeved on the outer wall of the inner ring seat.

[0009] Further, the fixing plate and the base are an integral molding structure, and the fixing plate is provided with a fixing hole at both ends of the top.

[0010] In the utility model, the fixing plate cooperates with the two fixing holes, bolts outside pass through the fixing holes and are fixed with the corresponding dynamic balancing unit, the stability of installation is increased, the bolts are disassembled, the base is disassembled and replaced conveniently.

[0011] Specifically, the fixing plate is provided with a first screw hole communicated with the sliding groove at the middle position, and the first screw hole is provided with a positioning bolt.

[0012] In the utility model, the positioning bolt is screwed with the first screw hole, the top of the positioning bolt is rotated and cooperated through a wrench outside, the bottom end of the positioning bolt is closely attached to the outer wall of the adjusting rod, and the position of the adjusting rod is fixed under the action of friction.

[0013] It should be noted that the boss and the base are an integral molding structure, the inner diameter of the second screw hole is matched with the outer diameter of the adjusting rod, the clamping seat is disc-shaped, and the clamping seat and the adjusting rod are an integral molding structure.

[0014] In the utility model, the cooperation of the boss increases the stability of the installation of the adjusting rod, the adjusting rod is screwed with the second screw hole, and the cooperation of the clamping seat helps the horizontal movement of the adjusting rod in the second screw hole, realizes the distance adjustment and cooperation between the two clamping seats, and facilitates the stable clamping cooperation of the adjusting rod with rotors of different widths.

[0015] Further, the outer diameter of the clamping seat is matched with the inner diameter of the sliding groove, the shaft slot is formed on the end portion of the clamping seat, and the arc-shaped edge is formed on the edge of the shaft slot.

[0016] In the utility model, the cooperation of the shaft slot facilitates the plug-in cooperation of the rotating shaft and the shaft slot, increases the stability of the clamping of the clamping seat and the rotor, and facilitates the dynamic balance experiment.

[0017] Specifically, the rotating shaft and the rotor are an integral molding structure, and the outer diameter of the rotating shaft is smaller than the inner diameter of the shaft slot.

[0018] In the utility model, the outer diameter of the rotating shaft is smaller than the shaft slot, which helps the plug-in cooperation of the rotating shaft of different thicknesses and the shaft slot on the clamping seat, increases the stability of installation, and the arc-shaped edge is formed on the edge of the shaft slot.

[0019] It is worth supplementing that the inner wall of the inner ring seat is closely attached to the rotating shaft and is welded and fixed, the outer ring sleeve is sleeved on the rotating shaft, and the outer ring sleeve is closely plug-in cooperated with the inner ring seat.

[0020] The utility model discloses, inner ring seat and pivot weld fixed, increase the stability of combination installation, under the cooperation of outer ring cover, the wrapping cooperation of inner ring seat is reduced, and the long rotation of internal ball is separated from inner ring seat under the centrifugal force, and the outer wall of outer ring cover and clamping seat end close adhesion, reduce in the rotating process, separate from inner ring seat, influence dynamic balance experiment.

[0021] Compared with the prior art, the utility model has the advantages of:

[0022] 1. The utility model discloses a base with fixed plate is set, and the corresponding dynamic balancing machine is fixed with the fixed hole, and the base is quickly combined and fixed, and the adjusting rod with clamping seat is rotatably connected with the boss on the base, the shaft slot is set up on the clamping seat, the rotating shaft of the rotor that needs to be experimented is conveniently inserted and cooperated, the distance adjustment cooperation is realized under the rotating cooperation of the adjusting rod, the different width rotors can be stably clamped and cooperated, and the position of the adjusting rod is fixed under the friction of the positioning bolt.

[0023] 2. The utility model discloses that the inner ring seat of the rotating shaft sleeve on the rotor is inserted and cooperated with the outer ring cover, and the outer ring cover and the inner ring seat can be separated and cooperated, and the ball on the inner ring seat is protected when the outer ring cover is inserted, the ball separation under the centrifugal force is reduced, and the clamping seat is cooperated with the arc, which helps to guide the rotating shaft to extend into the shaft slot, increases the rotor clamping stability, and the clamping seat blocks the outer ring cover, avoids the outer ring cover of the clamped rotor from separating in the dynamic balance experiment, and influences the dynamic balance experiment. ACCURACY OF DRAWINGS

[0024] Figure 1 It is the whole structure schematic diagram of the utility model;

[0025] Figure 2 It is the rotor clamping state schematic diagram of the utility model;

[0026] Figure 3 It is the base and positioning bolt combination structure schematic diagram of the utility model;

[0027] Figure 4 It is the base and adjusting rod combination structure schematic diagram of the utility model;

[0028] Figure 5 It is the rotor and bearing assembly combination structure schematic diagram of the utility model;

[0029] Figure 6 It is the base section structure schematic diagram of the utility model;

[0030] Figure 7 It is the adjusting rod section structure schematic diagram of the utility model.

[0031] The meanings of the various reference numerals in the Figures are as follows:

[0032] 1, base; 10, fixed plate; 100, fixed hole; 101, first screw hole; 12, boss; 120, second screw hole; 121, sliding groove;

[0033] 2, adjusting rod; 20, hand wheel; 21, clamping seat; 210, shaft groove; 211, arc-shaped edge;

[0034] 3, positioning bolt;

[0035] 4, rotor; 40, rotating shaft; 41, inner ring seat; 42, outer ring sleeve. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] Please refer to Figures 1-7 The embodiment provides a technical solution:

[0038] A kind of gyro rotor dynamic balance test fixture, including base 1, base 1 is U-shaped, the top of both sides of base 1 arm is equipped with fixed plate 10, fixed plate 10 and base 1 are integrally formed structure, and the top of fixed plate 10 is equipped with fixed hole 100 at both ends.

[0039] In the present application, fixed plate 10 cooperates with two fixed holes 100, and the external bolt passes through the fixed hole 100 and is fixed with the corresponding dynamic balance machine set, which increases the stability of installation, and the bolt is disassembled, which facilitates the disassembly and replacement of base 1.

[0040] Further, the middle position of fixed plate 10 is equipped with first screw hole 101 communicated with sliding groove 121, and positioning bolt 3 is arranged in first screw hole 101.

[0041] In the present application, positioning bolt 3 is screwed with first screw hole 101, and the top of positioning bolt 3 is rotated by external wrench, and the bottom end of positioning bolt 3 is tightly combined with the outer wall of adjusting rod 2, which fixes the position of adjusting rod 2 under the action of friction.

[0042] Specifically, the base 1 is provided with a boss 12 on each side arm near the middle of the top, a second screw hole 120 is formed at the outer end of the boss 12, a sliding groove 121 is formed at the inner end of the boss 12, an adjusting rod 2 is arranged in the second screw hole 120, a hand wheel 20 is arranged at the outer end of the adjusting rod 2, a clamping seat 21 is arranged at the inner end of the adjusting rod 2, the boss 12 and the base 1 are integrally formed, the inner diameter of the second screw hole 120 is matched with the outer diameter of the adjusting rod 2, the clamping seat 21 is disc-shaped, and the clamping seat 21 and the adjusting rod 2 are integrally formed.

[0043] In the utility model, the cooperation of the boss 12 increases the stability of the installation of the adjusting rod 2, the adjusting rod 2 is in threaded connection with the second screw hole 120, and the cooperation of the clamping seat 21 helps the horizontal movement of the adjusting rod 2 in the second screw hole 120, realizes the distance adjustment and cooperation between the two clamping seats 21, and facilitates stable clamping cooperation of the different-width rotors 4.

[0044] It should be noted that the outer diameter of the clamping seat 21 is matched with the inner diameter of the sliding groove 121, an axle groove 210 is formed at the end of the clamping seat 21, and an arc edge 211 is formed at the edge of the axle groove 210.

[0045] In the utility model, the cooperation of the axle groove 210 facilitates the plug-in cooperation of the rotating shaft 40 and the axle groove 210, increases the stability of the clamping of the clamping seat 21 and the rotor 4, and facilitates dynamic balance experiment.

[0046] Further, the rotor 4 is matched between the two clamping seats 21, the rotating shaft 40 is arranged at the central axis of the rotor 4, and the rotating shaft 40 is sleeved with a bearing assembly at both ends.

[0047] Secondly, the rotating shaft 40 and the rotor 4 are integrally formed, and the outer diameter of the rotating shaft 40 is smaller than the inner diameter of the axle groove 210.

[0048] In the utility model, the outer diameter of the rotating shaft 40 is smaller than the axle groove 210, which helps the plug-in cooperation of the rotating shaft 40 of different thicknesses and the axle groove 210 on the clamping seat 21, increases the stability of the installation, and the arc edge 211 is formed at the edge of the axle groove 210. Under the cooperation of the arc edge 211, the plug-in cooperation of the rotating shaft 40 and the axle groove 210 is guided.

[0049] Specifically, the inner wall of the inner ring seat 41 is tightly attached to the rotating shaft 40 and is welded and fixed, the outer ring sleeve 42 is sleeved on the rotating shaft 40, and the outer ring sleeve 42 is tightly plug-in matched with the inner ring seat 41.

[0050] The utility model discloses, inner ring seat 41 is welded fixed with pivot 40, increases the stability of combined installation, under the cooperation of outer ring cover 42, the wrapping cooperation of inner ring seat 41 is reduced, and the long rotation of internal ball is separated from inner ring seat 41 under the centrifugal force effect, and outer ring cover 42 outer wall and clamping seat 21 end portion close adhesion, reduce in the rotating process, separate from inner ring seat 41, influence dynamic balance experiment.

[0051] The gyro rotor dynamic balance test fixture of the embodiment is used as follows: first, the fixed plate 10 with the fixing hole 100 is combined and fixed with the base 1 with the boss 12, then the adjusting rod 2 with the clamping seat 21 is screwed with the second screw hole 120, the positioning bolt 3 is screwed with the first screw hole 101, then the external screw is passed through the fixing hole 100 and fixed with the corresponding dynamic balance machine, and the base 1 is quickly fixed and installed.

[0052] When it is needed to fix and connect the pivot 40 with the outer ring cover 42 and the inner ring seat 41 with the rotor 4, then the rotor 4 is placed between the top of the base 1, the pivot 40 is correspondingly matched with the clamping seat 21, the hand wheel 20 is rotated to rotate the adjusting rod 2, the two clamping seats 21 are driven to approach each other, the pivot 40 is guided into the shaft groove 210 under the cooperation of the arc-shaped edge 211, the outer end of the clamping seat 21 is close to the outer ring cover 42, the bearing assembly on the pivot 40 is clamped and held, the rotation of the rotor 4 does not affect the clamping and cooperation of the bearing assembly on the pivot 40, the rotors 4 of different sizes are quickly disassembled and replaced by adjusting the position of the clamping seat 21, the operation is convenient, the clamping is flexible, after clamping, the position of the adjusting rod 2 is fixed by rotating the positioning bolt 3 under the friction force, and the stability of the clamping position adjustment is increased.

Claims

1. A test fixture for dynamic balancing of a gyro rotor, comprising a base (1), characterized in that: The base (1) is U-shaped, both sides of the base (1) are provided with a fixed plate (10) at the top, both sides of the base (1) are provided with a boss (12) near the top, the boss (12) is provided with a second screw hole (120) at the outer end, the boss (12) is provided with a sliding groove (121) at the inner end, the second screw hole (120) is provided with an adjusting rod (2), the outer end of the adjusting rod (2) is provided with a hand wheel (20), the inner end of the adjusting rod (2) is provided with a clamping seat (21), and the two clamping seats (21) are matched with a rotor (4); The rotor (4) is provided with a rotating shaft (40) at the center axis, and the rotating shaft (40) is provided with a bearing assembly at both ends, and the bearing assembly comprises an inner ring seat (41) and an outer ring sleeve (42) sleeved on the outer wall of the inner ring seat (41).

2. The gyro rotor dynamic balance test fixture of claim 1, wherein: The fixed plate (10) and the base (1) are an integral molding structure, and the fixed plate (10) is provided with a fixed hole (100) at both ends of the top.

3. The gyro rotor dynamic balance test fixture of claim 1, wherein: The fixed plate (10) is provided with a first screw hole (101) in communication with the sliding groove (121) at the middle position, and the first screw hole (101) is provided with a positioning bolt (3).

4. The gyro rotor dynamic balance test fixture of claim 1, wherein: The boss (12) and the base (1) are an integral molding structure, the inner diameter of the second screw hole (120) is matched with the outer diameter of the adjusting rod (2), the clamping seat (21) is disc-shaped, and the clamping seat (21) and the adjusting rod (2) are an integral molding structure.

5. The gyro rotor dynamic balance test fixture of claim 1, wherein: The outer diameter of the clamping seat (21) is matched with the inner diameter of the sliding groove (121), the clamping seat (21) is provided with an axle groove (210) on the end, and the edge of the axle groove (210) is provided with an arc edge (211).

6. The gyro rotor dynamic balance test fixture of claim 1, wherein: The rotating shaft (40) and the rotor (4) are an integral molding structure, and the outer diameter of the rotating shaft (40) is smaller than the inner diameter of the axle groove (210).

7. The gyro rotor dynamic balance test fixture of claim 1, wherein: The inner wall of the inner ring seat (41) is tightly combined with the rotating shaft (40) and is welded and fixed, the outer ring sleeve (42) is sleeved on the rotating shaft (40), and the outer ring sleeve (42) is tightly inserted and matched with the inner ring seat (41).

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