Seat frame parameter adjusting device of inertial gyroscope

Abstract

The utility model belongs to the technical field of sensors, and discloses a seat frame parameter adjusting device of an inertial gyroscope, which comprises a bottom plate (301), a support plate I (302), a support plate II (305), a force measuring rod (309), a weight (310) and an operation table, the support plate I (302) and the support plate II (30) are vertically fixed above the bottom plate (301); a wire hole is formed in the upper end of the first supporting plate (302), a wire of the seat frame assembly penetrates out of the wire hole, and the seat frame shaft is supported in the wire hole. A rotor shaft of the seat frame assembly is placed in a semicircular hole in the top end of the second supporting plate. One end of the force measuring rod is hung on a contact of the electric brush, and the other end is provided with a weight (310). Whether a proper pressure range is reached between the electric brush and the sensor is judged through the state of the indicating lamp, and the operation is simple and convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of sensors, and particularly relates to a mounting bracket parameter adjustment device for an inertial gyro Background Art

[0002] An inertial gyro is a very important component in the control system of a guided ammunition, which plays a crucial role in whether the guided ammunition can accurately strike the target. It is mainly used in terminal guidance projectiles. By utilizing the characteristic of fixed-axis operation, it measures the pitch and roll attitude information of the projectile body. A relative angular displacement is generated between the contact piece of the sensor mounted on the housing of the mounting bracket and the outer ring mounted on the outer ring shaft. The sensor outputs an electrical signal, which is amplified and comprehensively controls the operation of the projectile body servo. Therefore, whether the sensor signal can be normally output is particularly important

[0003] The mounting bracket assembly consists of components such as an outer ring component, a sensor, a brush component, an adjusting plug, etc. The brush is installed on the outer ring shaft through a hole Φ2.8; the sensor is sleeved on the outer shaft of the mounting bracket through a hole Φ7. The contact piece of the sensor is composed of four adjacent and mutually insulated metal sheets in an arc shape. Each metal sheet is respectively welded to black, purple, blue, and yellow wires. The brush and the adjusting plug are welded together through a section of wire. After one end of the white wire is welded to the adjusting plug, the other end of the wire and other wires pass through a polyethylene tube. After one end of the ethylene tube is tied, it is inserted into the inner hole of the mounting bracket shaft

[0004] When the inertial gyro works, the rotor is unlocked, and the spring assembly is instantly released. The elastic deformation of the spring is converted into kinetic energy. Due to the rotation of the projectile body, the inner and outer ring shafts of the gyro rotate with the projectile body together. The brush contact points mounted on the outer ring shaft make reciprocating sliding movements on the respective contact pieces of the sensor. Since there is a 12V voltage on the brush, during the reciprocating movement, the contact points contact different contact pieces, generating continuous electrical signals. The pressure between the brush contact points and the sensor contact pieces directly affects the drift accuracy of the inertial gyro. If the pressure is too large, the offset is too fast, resulting in a large drift value, which cannot meet the performance requirements of the inertial gyro; if the pressure is too small, the brush contact points and the sensor contact pieces cannot effectively contact. Therefore, only when an appropriate pressure range can be achieved between the brush and the sensor can the functional test performance of the inertial gyro be satisfied, and ultimately the flight control requirements of the projectile body be met Content of the Utility Model

[0005] The technical problem to be solved by the utility model is: how to accurately adjust the pressure between the brush and the sensor

[0006] To solve the above technical problem, the specific technical solution of the utility model is as follows

[0007] A mounting bracket parameter adjustment device for an inertial gyro includes a bottom plate 301, a first support plate 302, a second support plate 305, a force measuring rod 309, a weight 310, and an operating table

[0008] The first support plate 302 and the second support plate 305 are vertically fixed above the bottom plate 301; a wire hole is provided at the upper end of the first support plate 302, and the wire of the seat frame assembly passes through the wire hole, and the seat frame shaft is supported in the wire hole; the rotor shaft of the seat frame assembly is placed in the semi-circular hole at the top end of the second support plate; one end of the force measuring rod is hung on the contact point of the brush, and a weight 310 is provided at the other end;

[0009] Six knobs, six indicator lights and a switch are provided on the panel of the operation table, and the knobs and the indicator lights are connected in series one by one; the indicator lights are connected in parallel with each other;

[0010] During the test, the wire of the seat frame assembly is connected to the corresponding knob through a connecting clip;

[0011] It also includes a switch, in which a power supply is provided, and each terminal of the switch is respectively connected to the wire corresponding to the sensor.

[0012] Among them, the first support plate 302 is connected to the bottom plate 301 by screws.

[0013] Among them, the second support plate 305 is connected to the bottom plate 301 by screws.

[0014] The utility model has the following advantages: it is simple and convenient to judge whether the appropriate pressure range is reached between the brush and the sensor through the state of the indicator light. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the seat frame assembly;

[0016] Figure 2 is a schematic diagram of wire connection;

[0017] Figure 3 is a schematic diagram of the operation table of the seat frame parameter adjustment device;

[0018] Figure 4 is a schematic diagram of the seat frame parameter adjustment device;

[0019] Figure 5 is an electrical diagram of the seat frame parameter adjustment device. Detailed Embodiment

[0020] In order to better understand the purpose, structure and function of the utility model, the following further detailed description of the utility model will be made in conjunction with the drawings.

[0021] Refer to Figure 1 、 Figure 2The processing object seat frame assembly of this embodiment is mainly composed of an outer ring component 201, a brush 202, a sensor 204, an adjusting screw plug 205 and a wire bundle 206, wherein the brush is composed of a brush leaf spring and a contact, and the brush is installed on the outer ring shaft through a hole Φ2.8; the sensor is inserted into the outer shaft of the seat frame through a hole Φ7, and the sensor bracket faces upward. After installation, the brush contact is not allowed to touch the sensor sheet; the wire bundle is composed of five wires of black, purple, blue, yellow and white. The bare wires at one end of the wires are welded together and inserted into the vinyl tube, and the wires and the vinyl tube are tied with brocade thread, and the tied wire bundle is inserted into the seat frame hole. One end of the vinyl tube extends out of the seat frame shaft, and the other end extends out of the seat frame hole and is welded to the sensor and the adjusting screw plug.

[0022] Reference Figure 2 The core wire of the white end of the wire is wrapped around the brush B position and then soldered with tin-lead solder. The other end passes through the inner hole of the bearing and the adjusting screw plug and is welded to the rivet petal at the upper left corner of the adjusting screw plug; the black, purple, blue and yellow wires are respectively welded to the corresponding holes of the sensor.

[0023] Reference Figure 3 The operating table of the frame parameter adjustment device consists of 6 knobs, 6 indicator lights, and a switch. Use 3 wires to wrap around the a, b and e knobs respectively, and use a connecting clamp at the other end of the wire. When measuring the contact pressure, clamp the white wire to the connecting clamp 1 312, the black wire to the connecting clamp 2 313, and the yellow wire to the connecting clamp 3 314. When the connecting clamps 2 and 3 are clamped to the wire, the corresponding indicator lights up, and the brush is in contact with the sensor contact sheet at this time. Hang one end of the force measuring rod on the contact point of the brush, and there is a weight on the weight plate at the other end. The corresponding indicator light goes out, and the brush is not in contact with the sensor contact sheet at this time. By adding or reducing the weight, the indicator light can be flashed between light and dark.

[0024] Reference Figure 4 It is a frame parameter adjustment device, which consists of a base plate 301, a support plate 1 302, a positioning plate 303, a knurled nut 304, a support plate 2 305, a clamping screw 306, a hexagonal cylindrical head screw 307, a slotted countersunk screw 308, a force measuring rod 309, and a weight 310. When measuring the contact pressure, the wire bundle is passed through the hole of the support plate 1, the frame shaft is placed in the hole, the rotor shaft is placed on the semicircular hole of the support plate 2, and the frame shaft is fixed with the positioning plate, knurled nut and slotted screw to prevent the frame shaft from rotating at will and affecting the accuracy of the measured pressure.

[0025] Reference Figure 5 , install 2 batteries in the switch 401, connect the 0-position terminal of the switch to the purple wire, connect the 1-position terminal of the switch to the black sensor wire, and connect the 2-position terminal of the switch to the white sensor wire.

[0026] Measure the contact pressure. Place the seat frame assembly on the seat frame parameter adjustment device as required, put on the force measuring rod and self-made weights. The specifications of the weights are 0.1g, 0.2g, 0.5g, 1g, 2g, 4g, 5g, and 6g. Increase or decrease the mass of the self-made weights to form a downward pulling force on the brush. When both indicator lights of the switch are off, it means that the brush is not in contact with the sensor contact piece. Adjust the pressure adjusting stud to make the brush contact with the sensor contact piece. When both indicator lights of the switch are on at the same time, it means that the brush is in contact with the sensor contact piece. At this time, observe the brightness of the indicator lights. When the indicator lights are very bright, it means that the contact pressure is too high. Adjust the pressure adjusting stud until the indicator lights flash between bright and dim. At this time, the mass of the self-made weight is the contact pressure value, which should be within the required range. The contact pressure F between the brush and the sensor is (0.05 ± 0.01) N.

[0027] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, for those skilled in the art, without departing from the principle of the present invention, several modifications and improvements can still be made, and these should also be regarded as belonging to the protection scope of the present invention.

Claims

1. A mounting parameter adjustment device for an inertial gyroscope, characterized in that It includes a bottom plate (301), a first support plate (302), a second support plate (305), a force measuring rod (309), weights (310) and an operating table; The first support plate (302) and the second support plate (305) are vertically fixed above the bottom plate (301); a wire hole is provided at the upper end of the first support plate (302), and the wire of the seat frame assembly passes through the wire hole, and the seat frame shaft is supported in the wire hole; the rotor shaft of the seat frame assembly is placed in the semi-circular hole at the top of the second support plate; one end of the force measuring rod is hung on the contact point of the brush, and the other end is provided with weights (310); Six knobs, six indicator lights and a switch are arranged on the panel of the operating table, and the knobs and the indicator lights are connected in series one by one; the indicator lights are connected in parallel with each other; During the test, the wire of the seat frame assembly is connected to the corresponding knob through a connection clip; It further includes a circuit breaker, in which a power supply is provided, and each terminal of the circuit breaker is respectively connected to the corresponding wire of the sensor.

2. The mounting parameter adjustment device for an inertial gyroscope according to claim 1, wherein The first support plate (302) is connected to the bottom plate (301) by screws.

3. The mounting parameter adjustment device of the inertial gyro according to claim 1, characterized in that, The second support plate (305) is connected to the bottom plate (301) by screws.

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