Zero locking circuit for ship gun operating lever

Abstract

The invention discloses a zero locking circuit for a ship gun operating lever, and belongs to the field of ship gun system circuit control. The zero-locking circuit comprises a zero-locking switch with at least two groups of conversion contacts and a corresponding connecting line. When the zero-locking switch is pressed down, the contact of the zero-locking switch is switched, the height and direction control signal output end of the operating rod socket is disconnected with the output end of the corresponding slide rheostat, and meanwhile, the zero-locking switch is switched and connected to a public signal ground, so that reliable zero-locking is realized. According to the scheme, the zero-locking function is ensured to be effective, meanwhile, a short-circuit loop is thoroughly prevented from being formed between the positive electrode and the negative electrode of the power supply, the power supply module is fundamentally protected, and the safety and reliability of a ship gun control system are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of naval gun system circuit control technology, specifically relating to a zero-locking circuit for naval gun control levers, which aims to prevent accidental operation of the control levers from causing changes in the aiming direction of the naval gun, while also avoiding short circuits that could damage the power supply module. Background Technology

[0002] In naval gun systems, operators control the elevation and azimuth of the gun using a joystick to aim and track maritime targets. However, due to the ship's rolling caused by waves and the forward and backward thrust of the high-pressure airflow in the gun barrel during operation, operators may unintentionally touch the joystick handle after aiming, causing misoperation. This results in the joystick's output control voltage signal shifting the gun's firing line and affecting the aiming accuracy. To solve this problem, existing technologies typically incorporate a zero-lock function in the joystick control circuit. After aiming is complete, triggering a zero-lock switch disables the control signal output by the joystick, thus fixing the gun's direction.

[0003] A typical implementation of an existing zero-locking circuit is as follows: Figure 1 As shown, in this circuit, the elevation and azimuth sliding rheostats BZ1 and BZ2 inside the control lever are used to control the elevation and azimuth movements of the naval gun, respectively. When the operator moves the control lever back and forth, the sliding arm of BZ1 moves, outputting a continuously changing elevation control voltage signal (wire number 400) from the third pin of the control lever socket; when the operator moves the control lever left and right, the sliding arm of BZ2 moves, outputting a continuously changing azimuth control voltage signal (wire number 200) from the first pin of the socket. These voltage signals are respectively sent to the elevation and azimuth drivers of the naval gun, and the direction and speed of the motor are controlled by changing the magnitude and polarity of the output voltage, thereby realizing the elevation and azimuth rotation movements of the naval gun. After aiming is completed, the operator presses the zero-lock switch AN2, its normally open contact closes, directly shorting the elevation control signal line (400) and the azimuth control signal line (200) to the negative terminal of the power supply M202 / B, making the output signal voltage zero, stopping the movement of the naval gun, and achieving the zero-locking purpose. However, this scheme has a significant drawback: in the zero-lock state, if the joystick is placed at its extreme position in a certain direction, the resistance of its internal sliding rheostat approaches zero, causing a short circuit between the positive power supply terminal (L202 / B, L203 / B) and the negative power supply terminal M202 / B through the rheostat. The resulting excessive current can easily damage the power supply module, and several related failures have occurred in actual applications, seriously affecting system reliability. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that existing naval gun control stick zero-locking circuits are prone to short circuits and damage to the power supply module when the control stick is placed in the extreme position during zero-locking. An improved zero-locking circuit scheme is proposed. This scheme redesigns the connection between the zero-locking switch AN2 and the elevation / azimuth sliding rheostats. When the AN2 button is pressed, the control stick output signal is connected to the signal ground terminal of the sliding rheostat, instead of being directly short-circuited to the negative terminal of the power supply. This achieves effective zero-locking while avoiding short circuits, protecting the power supply module and the operating circuit system.

[0005] To achieve the above objectives, the technical solution provided by this invention is:

[0006] A zero-locking circuit for a naval gun control lever is provided. The control lever is equipped with a high-low sliding rheostat BZ1 and an azimuth sliding rheostat BZ2. The zero-locking circuit includes a zero-locking switch AN2 and connecting lines.

[0007] The zero-locking switch AN2 is configured to have at least two sets of changeover contacts; the connection lines of the zero-locking circuit are configured as follows:

[0008] When the zero-locking switch AN2 is not activated, connect the first pin of the joystick socket to the signal output terminal of the azimuth sliding rheostat BZ2 through the first set of normally closed contacts of the zero-locking switch, and connect the third pin of the joystick socket to the signal output terminal of the high and low sliding rheostat BZ1 through the second set of normally closed contacts of the zero-locking switch.

[0009] When the zero-locking switch AN2 is pressed, the first set of normally closed contacts and the second set of normally closed contacts activate, disconnecting the first and third pins of the lever socket from the signal output terminals of their respective sliding rheostats, and connecting them to a common signal ground M202 / B.

[0010] Furthermore, the zero-locking switch AN2 is a self-locking push-button switch.

[0011] Furthermore, the first set of switching contacts of the zero-locking switch AN2 includes a moving contact, a normally closed contact, and a normally open contact. The moving contact is connected to the first pin of the joystick socket, the normally closed contact is used to connect to the signal output terminal of the azimuth sliding rheostat BZ2, and the normally open contact is used to connect to the signal ground M202 / B.

[0012] Furthermore, the second set of switching contacts of the zero-locking switch AN2 includes a moving contact, a normally closed contact, and a normally open contact. The moving contact is connected to the third pin of the joystick socket, the normally closed contact is used to connect to the signal output terminal of the high / low sliding rheostat BZ1, and the normally open contact is used to connect to the signal ground M202 / B.

[0013] Furthermore, the common signal ground is the power ground.

[0014] The advantages of this invention are:

[0015] 1. The zero-locking circuit for naval gun control levers provided by this invention ingeniously improves the connection method of existing zero-locking circuits. When the zero-locking switch is pressed, the switch contact switching disconnects the control lever output signal from the output terminal of the sliding rheostat and simultaneously switches to a common signal ground. This fundamentally eliminates the risk of power short circuit caused by the direct short circuit of the control lever output signal terminal to the power ground in the original circuit, effectively protecting the power supply module. At the same time, this design can reliably lock the naval gun's fire line to the aiming direction in the zero-locking state, preventing deviation due to accidental touch, and has no impact on normal operation performance. Ultimately, the simple and reliable circuit structure significantly improves the safety and operational stability of the system.

[0016] 2. This improvement solution is achieved by optimizing the connection logic between the zero-locking switch and existing circuit components. It does not require the addition of complex extra circuits or components, is low in cost, easy to modify, and easy to upgrade and promote on existing equipment. Attached Figure Description

[0017] The above and / or other features and advantages of the present invention will become more readily understood from the following description with reference to the accompanying drawings, in which:

[0018] Figure 1 This is the wiring diagram of the existing zero-locking circuit used for naval gun control levers;

[0019] Figure 2 This is a wiring diagram of the zero-locking circuit for the naval gun control lever of the present invention. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and exemplary embodiments thereof. It should be noted that the following detailed description of the present invention is for illustrative purposes only and is not intended to limit the scope of the invention.

[0021] It should be noted that, in the context of this invention, terms such as "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0022] Reference Figure 2 As an exemplary embodiment of the present invention, the zero-locking circuit for a naval gun control lever includes a zero-locking switch AN2 and connecting lines. In some embodiments, the zero-locking switch AN2 is a self-locking push-button switch, so that once the self-locking switch is pressed, its state is mechanically maintained, independent of continuous human operation, greatly avoiding human error and ensuring operational stability.

[0023] The zero-locking switch AN2 is configured to include at least two sets of functionally independent changeover contacts. The connection wiring is configured as follows:

[0024] Connection of the first set of switching contacts: The moving contact (end 1) of this set of contacts is directly connected to the first pin 200 of the joystick socket, which is used to output the orientation control signal; the normally closed contact (end 2) of this set of contacts is connected to the signal output terminal (i.e., its sliding arm) of the orientation sliding rheostat BZ2; the normally open contact (end 3) of this set of contacts is connected to a common signal ground M202 / B.

[0025] Connections of the second set of switching contacts: The moving contact (end 4) of this set of contacts is directly connected to the third pin 400 of the joystick socket, which is used to output high and low control signals; the normally closed contact (end 5) of this set of contacts is connected to the signal output terminal (i.e., its sliding arm) of the high and low sliding rheostat BZ1; the normally open contact (end 6) of this set of contacts is also connected to the common signal ground M202 / B.

[0026] It should be noted that the firing button AN1, which exists simultaneously in the circuit, functions independently of the improved zero-locking circuit of this invention. The terminals 524 and 540 at both ends of AN1 together form an independent and secure firing control loop, one of which is the positive power supply, and the other is the signal return or return ground. Its function is that after the naval gun is aimed at the target, the operator presses the button to generate a firing signal to control the naval gun's action. The on / off state of AN1 does not affect the operation of the AN2 zero-locking circuit, and vice versa.

[0027] Additionally, in a specific embodiment, the common signal ground M202 / B serves as the system's power ground.

[0028] The operation of the zero-locking circuit of this invention is divided into two states: the normal operation state when AN2 is not pressed and the zero-locking state when AN2 is pressed.

[0029] Normal operating condition:

[0030] The zero-locking switch AN2 is in its original position, with all normally closed contacts remaining closed and normally open contacts remaining open.

[0031] Azimuth Channel: The control voltage generated by the signal output terminal of the azimuth sliding rheostat BZ2 is smoothly transmitted to the first pin 200 of the control lever socket through the normally closed contact (end 2 → end 1) of the first group of contacts of AN2, driving the ship's gun to rotate in azimuth.

[0032] High / Low Channel: The control voltage generated at the signal output terminal of the high / low sliding rheostat BZ1 is smoothly transmitted to the third pin 400 of the control lever socket through the normally closed contact (pin 5 → pin 4) of the second group of contacts of AN2, driving the ship's gun to perform high / low elevation.

[0033] In this state, the operator can freely control the joystick, the ship's gun responds sensitively, and there is no functional impact.

[0034] Zero-locked state:

[0035] When the operator presses the self-locking button AN2, the internal mechanism of the switch is activated, realizing the change of the contact state.

[0036] Orientation Channel: The first set of switching contacts of AN2 actuates, its moving contact (end 1) disconnects from the normally closed contact (end 2), and then closes with the normally open contact (end 3). This action completely disconnects the first pin 200 of the joystick socket from the output terminal of the orientation sliding rheostat BZ2, and instead connects it to the common signal ground M202 / B through the normally open contact (end 3). At this time, the orientation control signal line (line number 200) is forcibly pulled low to ground potential, and the output is zero voltage.

[0037] High / Low Channel: The second set of switching contacts of AN2 operates synchronously, with its moving contact (terminal 4) disconnecting from the normally closed contact (terminal 5) and then closing with the normally open contact (terminal 6). This action completely disconnects the third pin 400 of the joystick socket from the output terminal of the high / low sliding rheostat BZ1, and instead connects it to the common signal ground M202 / B through the normally open contact (terminal 6). At this time, the high / low control signal line (line number 400) is also forced low to ground potential, and the output is zero voltage.

[0038] In this zero-lock state, regardless of whether the operator accidentally touches the control lever, or whether the handle is touched due to the ship's swaying or the impact of firing, the output signals of the two control channels are constant at ground potential, so the elevation and azimuth of the ship's gun will not move at all, thus stably locking the line of fire in the direction of the pre-aimed target.

[0039] Crucially, because the joystick socket outputs (200, 400) are connected to signal ground M202 / B and completely disconnected from the output of the sliding rheostat in the zero-lock state, even if the joystick is moved to its limit, a direct short circuit will not be formed between the power supply positive terminal L202 / B (forward voltage), L203 / B (reverse voltage) and signal ground M202 / B. This fundamentally eliminates the risk of damaging the power supply module and achieves a safe and reliable zero-lock function.

[0040] Finally, it should be noted that the features mentioned and / or shown in the above description of exemplary embodiments of the present invention can be combined in the same or similar manner with one or more other embodiments, combined with or substituted for corresponding features in other embodiments. These combined or substituted technical solutions should also be considered to be included within the scope of protection of the present invention.

Claims

1. A zero-locking circuit for a naval gun control lever, wherein the control lever internally comprises a high / low sliding rheostat BZ1 and an azimuth sliding rheostat BZ2, characterized in that: The zero-locking circuit includes a zero-locking switch AN2 and connecting lines; The zero-locking switch AN2 is configured to have at least two sets of changeover contacts; the connection lines of the zero-locking circuit are configured as follows: When the zero-locking switch AN2 is not activated, the first pin of the joystick socket is connected to the signal output terminal of the azimuth sliding rheostat BZ2 through the first set of normally closed contacts of the zero-locking switch, and the third pin of the joystick socket is connected to the signal output terminal of the high-low sliding rheostat BZ1 through the second set of normally closed contacts of the zero-locking switch. When the zero-locking switch AN2 is pressed, the first set of normally closed contacts and the second set of normally closed contacts are activated, disconnecting the first and third pins of the control lever socket from the signal output terminals of their respective sliding rheostats, and connecting them instead to a common signal ground M202 / B.

2. The zero-locking circuit for a naval gun control lever according to claim 1, characterized in that: The zero-locking switch AN2 is a self-locking push-button switch.

3. The zero-locking circuit for a naval gun control lever according to claim 1 or 2, characterized in that: The first set of switching contacts of the zero-locking switch AN2 includes a moving contact, a normally closed contact, and a normally open contact. The moving contact is connected to the first pin of the control lever socket, the normally closed contact is used to connect to the signal output terminal of the azimuth sliding rheostat BZ2, and the normally open contact is used to connect to the signal ground M202 / B.

4. The zero-locking circuit for a naval gun control lever according to claim 3, characterized in that: The second set of switching contacts of the zero-locking switch AN2 includes a moving contact, a normally closed contact, and a normally open contact. The moving contact is connected to the third pin of the joystick socket, the normally closed contact is used to connect to the signal output terminal of the high / low sliding rheostat BZ1, and the normally open contact is used to connect to the signal ground M202 / B.

5. The zero-locking circuit for a naval gun control lever according to claim 1 or 2, characterized in that: The common signal ground is the power ground.

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