Non rigid latching system, gun How do you get non rigid latching??

According to the nature of the connection between the bolt and the barrel during locking, the locking methods are divided into two types: inertial locking and rigid locking.

There are two kinds of inertial locking: one is the free bolt locking method, there is no buckle structure connection between the bolt and the barrel when firing, and only the inertia action of the bolt mass and the re-entry spring force close the chamber, that is, the bolt only closes the chamber without locking. The other is the semi-free bolt locking method, although there is a fastening structure connection or other resistance restrictions between the bolt and the barrel, the bolt can still unlock itself under the action of gunpowder gas on the bottom pressure of the bullet after firing, that is, the bolt seems to lock the chamber but not lock.

This locking method is divided into two ways: mechanical delayed unlocking type and gas delayed unlocking type. The mechanical delayed unlocking locking method is to use the mechanical structure to delay the bolt unlocking, such as the German G3 automatic rifle, which uses a roller and a barrel seat to make the bolt seem to lock the chamber but not lock; The gas delayed locking method uses gunpowder gas derived from the chamber to prevent bolt recoil, such as the German HK P7 9mm pistol. The inertial latching method is usually only used for firing less powerful ** such as pistol bullets.

Rigid locking is a reliable fastening structure connection between the barrel and the bolt when firing, and the pressure of gunpowder gas on the bottom of the bullet cannot make the bolt unlock. Because this locking method can ensure the reliable work of high-power bullets, it has been widely used.

Hello, first of all, clarify the principle of bolt locking and automatic.

Bolt latching is divided into rigid latching and inertial latching. There are two kinds of inertial locking: one is the free bolt locking method, in which there is no fastening structure connection between the bolt and the barrel when firing, and only the inertia action of the bolt mass and the re-entry spring force close the chamber.

The other is the semi-free bolt locking method, although there is a fastening structure connection or other resistance restrictions between the bolt and the barrel, the bolt can still unlock itself under the action of gunpowder gas on the bottom pressure of the bullet after firing. The rigid locking refers to the reliable fastening structure connection between the barrel and the bolt when firing, and the pressure of gunpowder gas on the bottom of the bullet cannot make the bolt unlock.

Broadly speaking, the application of free bolt inertia locking is more common on firearms with the short recoil principle. However, in some firearms that apply the principle of gas-conductive automatics, free-form bolts are also used, such as the AR series, which uses the airway pipe to directly blow gunpowder gas into the receiver gas chamber to push the bolt recoil to unlock.

Most of the firearms with rigid locking are gas conductive automatic principle and tube retreat. The automatic principle of tube withdrawal is rarely used now due to the large friction on the barrel. Therefore, there is no necessary correspondence between the bolt locking principle and the automatic principle, and the bolt locking and automatic distance of the firearm are always related to the actual combat performance of the firearm.

The main advantages of inertial latching are simple structure, stability and reliability, etc., and it is generally used on submachine gun types that need to pour a large number of bullets at the target in a short time. The disadvantage of inertial locking is that the locking is not firm, so that when using high-power ammunition, the gunpowder is not fully burned, so that the bolt is unlocked in advance under the huge force, so that the gunpowder burns in the receiver. Therefore, inertial locking can only fire low-power bullets, and increases the lethal effect by increasing the bullet diameter.

The rigid locking is a bit of a firm lock, which can fire high-power bullets, but the disadvantage is that the structure is complex, and it is easy to be affected by sand and dust, etc., which causes problems such as poor opening and closing, and causes jamming.

Rigid locking is a form in which the bolt is directly connected to the barrel through a certain mechanism, and then the bolt is released and reseated through an unlocking mechanism. There are bolt rotary type, barrel swing type, card iron swing type, card iron open type, oblique wedge type and other types.

To put it simply, rigid locking refers to the use of a special mechanism to complete the chamber locking to ensure the reliability of the locking Many pistols due to the small power of firing ammunition Only use inertia locking (only rely on the reentry spring to push the bolt against the bottom of the chamber) can ensure safety Compared with the rigid locking similar to the use of locks to lock the door, the inertia locking is just to use a heavy object against the doorway Rigid locking can be divided into many kinds according to different implementation methods The most commonly used in pistols is the barrel offset lock.

The air conduction type belongs to the automatic principle, and the purpose of the automatic principle is how to carry out the automatic firing cycle, and it has nothing to do with the locking principle, the gas conduction type is to draw out the gunpowder gas from the hole in the barrel, and the gas pushes the bolt backward through the air duct to achieve the automatic function.

In general, the automatic principle is often used in conjunction with certain latching methods.

The most commonly used on pistols is the barrel offset locking with the barrel short recoil automatic principle, which is a classic structure invented by Browning, widely used for all kinds of pistols, and the inertial locking is combined with the bolt recoil principle, which is the simplest structure to achieve automatic functions.

The combination of the automatic principle and the latching method is determined by the designer according to his needs, and the above collocation is not the only one, but the most commonly used.

The big difference is that the air conduction type is an automatic mode, and the rigid locking method is a locking method to ensure that the breech is firmly closed when firing, and the bolt cannot automatically open the breech under the action of recoil, but must be driven by other parts to act. The air conductive type is that is.

By making a hole in the barrel of the gun, the automatic principle of driving the action of parts such as the bolt with part of the gunpowder gas is introduced, and the two have little to do with each other.

Latching refers to "self-locking", which is to automatically lock the state of the relay after it is energized, keep the loop on, and even if the control current is disconnected at this time, its state will not be changed. That is, when the power is turned on, the control current is disconnected and it continues to remain on unless the unlock button is pressed.

Latching relay: It can be divided into 1-coil latching type and 2-coil latching type.

1) 1 coil latching relay: coil energized, contact action; The coil is powered off, the contact is still in the previous state, and the contact is reset only when a reverse voltage is added to the coil.

2) 2 coil lock relay: energize the set coil and the contact action; When the coil is powered off, the contact remains in the previous state, and the contact is reset only when the reset coil is energized.

That's it"Self-locking"Contactor, in the "self-locking" circuit of the contactor, such as the simplest two-position button "on" and "off", the coil of the contactor is a joint, according to the voltage requirements of the coil, connected to a live wire or neutral wire. When pressing the button "on", the other connector of the coil is connected by the button, which provides the coil voltage, and the contactor sucks and is. When the button is disconnected, the live wire of the button continues to provide voltage to the coil through the auxiliary contact of the contactor, and the contactor can also remain connected, which is the "self-locking" of the contactor.

If you want to disconnect the contactor, press the "stop" of the button switch, and the contactor loses power and disconnects the circuit.

The "interlocking" of the contactor, such as using two contactors to control the reverse rotation of the motor, the two contactors can not be sucked at the same time, so the control of the two contactor coils is dependent on each other to turn on, and on the wiring of the three-position button switch, it is also cross-controlled. This double interlock is designed to eliminate mismovements that rely on manual operation.

If you don't have a circuit diagram, you can't understand it, you can find a typical circuit diagram to understand this kind of "self-locking" and "interlocking".

Latching relays actually refer to:"Self-locking", that is, after the relay is energized, its state is automatically locked, and even if the control current is disconnected at this time, its state will not be changed. That is to say, when the power is turned on, the disconnected control current will continue to remain in the pick-up state, unless the unlock button is pressed, of course, there are also unlocks with reverse current.

Ordinary relays, all are"Monostable", and this relay belongs"Bistable"type.

It actually refers to:"Self-locking", that is, after the relay is energized, its state is automatically locked, even if the control current is disconnected at this time, it will not change its state, that is, when the power is on, the disconnected control current still continues to remain in the state of suction, unless the unlock button is pressed, (some are unlocked by reverse current).

Ordinary relays, all are"Monostable", and this relay belongs"Bistable"type.

Electrical locking is a locking that connects the auxiliary contacts of circuit breakers, disconnectors, grounding switches and other equipment to the operating power circuit of related electrical equipment, and is widely used in electric operation equipment.

Generally, the electrical locking circuit can only prevent the misoperation of circuit breakers, disconnectors and grounding switches, and can not do anything to accidentally enter the live interval and connect (remove) the grounding wire, and cannot independently realize the complete "five prevention" functions.

At this stage, the anti-mistaken locking mainly includes: electrical locking, electromagnetic locking (electromagnetic locking), mechanical locking, mechanical program locking, live display device, microcomputer anti-error, measurement and control locking, background logic locking, etc.

Advantages and disadvantages of electrical latching:

1. The electrical locking structure is rigorous and reliable.

2. The electrical locking can generally prevent the misoperation of the isolation switch, grounding switch and net door.

3. Electrical locking can well prevent the interval of the capacitor bank and the station's grounding transformer, so as to prevent the live interval from entering by mistake.

4. Due to its complex wiring and many components involved, workers who need to master certain electrical technology can be manually unlocked, so it can achieve the purpose of mandatory anti-misoperation.

5. It is necessary to access a large number of secondary cables, the wiring method is more complicated, and the operation and maintenance are more difficult.

Electrical latches are:

The principle of electrical contact is used to interlock and lock the action of a component, which corresponds to the mechanical locking, which is the action of locking an element by using the principle of mechanical action, which is simply the function of the fuse.

The locking device mainly realizes the five prevention functions:

1. Prevent the isolation switch from pulling and closing with load;

2. Prevent the grounding wire (grounding switch) from closing; Prevent personnel from entering the live interval by mistake;

3. Prevent mis-division and mis-closing of the circuit breaker;

4. Prevent live hanging grounding wire (close grounding switch); and to prevent non-contemporaneous juxtapositions. The basic method of realizing the non-synchronous parallel of the locking is to realize the simultaneous locking through the differential pressure and the frequency difference identification device, and the synchronous locking device is put into the synchronous locking device in time during the operation of the reverse gate.

5. Prevent the non-simultaneous closing of the two systems with non-simultaneous power supply.

The implementation method and characteristics of the five-proof function.

For manually operated switchgear, mechanical interlocking is generally achieved by mechanical means; The electrically operated switchgear is connected to the control loop through the auxiliary contact in the auxiliary transfer switch of the circuit breaker according to a certain logical relationship to achieve operational interlocking.

The action of interlocking and locking an element using the principle of electrical contact is electrical locking, and its corresponding mechanical locking is the action of locking an element by using the principle of mechanical action.

To put it simply, it is to use the action (opening and closing) of electrical components to achieve the expected on-off (what should be passed, and what should not be passed, must not be passed);

For example, when component A is expected to close, B cannot close; Then a set of normally closed auxiliary contacts of element A are connected in series in the closing circuit of element B, and when A closes, the closing circuit of B is cut off. That is, B could not close and achieved the expected goal!

Also known as electrical self-locking, the top three floors.

It just can't be used unless it's turned on.