RU128601U1 - LOCK - Google Patents

Abstract

1. The latch for holding the fixed element, comprising a locking stop, a drive, characterized in that the locking stop contains at least two stop cams, a stop body with longitudinal grooves, in each of which an elastic plate is located and fixed at one end, on the other the end of which is fixed a thrust cam, a cam lock having the possibility of reciprocating movement along the axis of the housing, connected by a rod to the drive, while in the locked position the thrust cams form an internal thrust surface l coverage of the surface of the fixed element and the outer surface, which is covered by the surface of the castle. 2. The latch according to claim 1, characterized in that it comprises a guide sleeve mounted on the stop body. The latch according to claim 2, in which the guide sleeve is made of a material different from the material of the emphasis of the housing.

Description

Technical field

The utility model relates to the field of aeronautical engineering, specifically to launching launchers of aircraft, but can also be used in other areas of technology to provide temporary locking of objects with potential energy to move.

State of the art

Known methods of launching aircraft by using pre-stored potential energy, while the aircraft until the launch is installed on the booster device that can be moved due to the above energy (for example, in the form of a platform trolley), which is restrained from arbitrary movement by the latch mechanism.

Known retainer used in the catapult Mamyrina A.V. (see patent RU 2077456 C1, class IPC - B64F 1/06, publ. 04/20/1997), in which potential energy is stored due to the bending of elastically bending beams, the machine to be launched is placed on the platform. On the underside of the platform is a fixed element made in the form of a rod bracket with a spherical head. In addition to the element to be fixed, the locking mechanism includes a fixing tube and clamps.

The disadvantages of the locking mechanism is that the fixing method due to the friction forces is unacceptable to hold large loads, as well as the lack of an automated drive.

As a prototype, a catapult retainer was selected, disclosed in patent document GB 673551 A, class. IPC B64F 1/06, publ. 06/11/1952, in which the locking emphasis stops the held element by the force of the springs covering it with segments of the retainer. In this case, for unlocking, it is necessary to translationally move the segments of the latch in the cylindrical body using the drive, moving the held element. The disadvantage of the latch specified in GB 673551 A is the unreliability of the locking of the held element, since it depends on the state of the springs, the complexity of the design, and also that the unlocking occurs with the preliminary movement of the held element, which does not provide the instantaneous fixation required when starting the aircraft.

Utility Model Disclosure

When developing the claimed utility model, the technical task was posed of creating a reliable design of the latch which would not have the inherent disadvantages of the prototype ..

The problem is solved by creating a utility model, characterized by the following features:

a retainer for holding a fixed element, comprising a locking stop, a drive, wherein the locking stop comprises at least two stop cams, a stop housing with longitudinal grooves, in each of which an elastic plate is located and fixed at one end, at the other end of which is fixed thrust cam, cam lock with the possibility of reciprocating movement along the axis of the housing, connected by a rod to the drive, while in the locked position, the thrust cams form the inner thrust surface of the swivel xnosti of the fixed element and the outer surface, which is covered by the surface of the castle.

The technical result achieved by the implementation of the specified technical solution is to create a simple design of the latch, ensuring the reliability of the fixation of the fixed element, and the possibility of unlocking at the required times.

Also, the claimed utility model may include a lock guide sleeve mounted on the stop body, wherein the sleeve may be made of a material different from the material of the stop body, which has a lower coefficient of friction and higher wear resistance. The specified will increase maintainability, provide reduced friction during the reciprocating movement of the lock and increase the operating life.

Brief Description of the Drawings

The design of the utility model is illustrated by drawings, which depict:

Figure 1 - view of the latch in the locked position;

Figure 2 is a section along aa;

Figure 3 - view of the latch in the open position.

Utility Model Implementation

The latch, for holding the fixed element (16), contains: locking stop (1) drive (2), with at least two stop cams (3), stop body (4) with longitudinal grooves (5) in each of which an elastic plate (6) is located and fixed at one end, at the other end of which a thrust cam (3) is fixed, a cam lock (7) connected by a rod (8) to the drive (2), whereby the lock (7) is reciprocated in axial direction. In the locking position (Fig. 1), the stop cams (3) form the inner thrust surface of the grip (9) of the surface of the fixed element (16) and the outer surface (10), which is covered by the surface (11) of the lock (7).

Also, the claimed utility model may include a guide sleeve (12) of the lock (7) mounted on the stop body (4).

The sleeve (12) can be made of a material that differs from the material of the stop body (4) with a lower friction coefficient and higher wear resistance. The choice of materials is carried out depending on the solution of specific design problems. For example, when making a stop body made of steel, the sleeve may be made of bronze.

The possibility of replacing the sleeve (12), making the sleeve of the material more wear-resistant, and reducing friction in the pair of sleeve-lock will increase maintainability and increase service life.

An automated drive (2) contains an engine (13) generating a moment of movement - for example, an electric motor and a transmission mechanism (14) converting the moment of movement from the engine (13) into the movement of the associated thrust (8). In this case, the transmission mechanism (14) can be crank or gear. The drive is controlled remotely by signals from the control panel.

By “fixed element” in the claimed technical solution is meant a technological element attached to an object with potential energy for movement (a platform trolley prepared for launching a catapult), which requires locking for a certain time.

The utility model works as follows.

At the beginning of the fixation, the drive (1) moves the lock (7) by means of the rod (8) to the opening position (Fig. 3). The guiding element for the inner surface of the lock (7) is the outer surface of the stop housing (4), or a sleeve (12) mounted on it. In this case, the covering surface (11) of the lock (7) comes out of contact with the outer surface of the coverage (10) of the cams.

The fixed element (16) is inserted in the axial direction of the inlet (15) of the lock (7). Upon contact from the end face of the fixed element (16) with the “input” surfaces of the cams (3), the cams (3) move, expanding the elastic plates (6) and enable the fixed element (16) to take a position corresponding to the fixation position.

When the fixed element (16) reaches the fixation position (Fig. 1), due to the elasticity of the plates (6), the cams (3) are compressed, form an internal thrust surface of the grip (9). The drive (2) moves the lock (7) by means of a rod (8) to the locking position (figure 1), in which the outer surface (10) of the cams (3) is covered by the surface (11) of the lock (7). In this case, the lock (7) is fixed from possible movements by the transmission mechanism (14).

A fixed element (16) possessing potential energy, which tends to move - remove it from the locking stop (1), abuts against the inner thrust surface of the grip (9) formed by cams (3) and is locked by it. Unlocking occurs by moving the lock (7) by means of the rod (8) to the opening position (Fig. 3).

In this case, the fixed element (16) is held in a locked state by the inner thrust surface of the grip (9) until the outer surface (10) of the cams (3) is covered by the surface (11) of the lock (7), preventing the cams (3) from being unclenched due to the radial component of the force acting on them from the side of the fixed element (16).

Reliability of the connection is achieved by the fact that the force counteracting the force tending to bring the fixed element (16) out of the locking state, provided by the coverage of the outer surface (10) of the cams (3) by the surface (11) of the lock (7), is limited only by the mechanical strength of the structural elements of the locking stop designed for a given load.

When unlocked, the actuator (2) moves the lock (7) by means of a rod (8) to the open position (Fig. 3). When the outer surface (10) of the cams (3) comes out of contact with the enclosing surface (11) of the lock (7), the radial component of the force acting on the cams (3) from the side of the fixed element (16) bends the elastic plates (6) and the fixed element (16) is removed from the stopper state, which ensures release at the required time.

Claims (3)

1. The latch for holding the fixed element, comprising a locking stop, a drive, characterized in that the locking stop contains at least two stop cams, a stop body with longitudinal grooves, in each of which an elastic plate is located and fixed at one end, on the other the end of which is fixed a thrust cam, a cam lock having the possibility of reciprocating movement along the axis of the housing, connected by a rod to the drive, while in the locked position the thrust cams form an internal thrust surface l coverage of the surface of the fixed element and the outer surface, which is covered by the surface of the castle. 2. The latch according to claim 1, characterized in that it contains a guide sleeve mounted on the body of the stop. 3. The latch according to claim 2, in which the guide sleeve is made of a material different from the material of the stop housing.

Images