DE2141180A1 - Coupling with automatic locking - Google Patents

Description

HM HOBSON LIMITED
Africa House,
Kingsway,

MÖHLSTRASSE 22, CALL NUMBER 48 3921/22

<983921/22>

Coupling with automatic locking

The invention "relates to a clutch that, when in contact with a unit to be coupled, this unit is automatically locked to a unit carrying the coupling. The coupling has a frame on which a hook is pivotably mounted, which is pulled into a disengaged position by a peder will. A locking pin is also provided, which is pressed against the back of the hook by a second leather, when the latter is in its disengaged position and engages in a recess on the back of the hook, when the latter is pivoted into a locking position through contact with the unit to be coupled, and the I & ken locked in its locking position, with the locking pin and the pivot point of the hook, when the hook is in its locking position, with the line of attack of or the load exerted on the coupled unit are in line.

209809 / U83

An exemplary embodiment of the invention is explained below with reference to the accompanying drawings. Show it:

Fig. 1 is a plan view of a coupling according to the invention broken ropes;

Fig. 2 is a sectional view showing the clutch in a disengaged position;

Fig. 3 one of the Pig. 2 Corresponding view, but with the coupling locked.

The coupling has a U-shaped frame 10, the one Holding pin 11, which extends transversely to the legs of the frame. A hook 12 which is hinged to pin 11 is, is connected to a plunger 15 via a connecting member 13 articulated on the hook at 14, which is in a cylinder 16 runs, which is articulated to the frame 10 by means of a bolt 17. The plunger 15 is of a Spring 32 pressed to the left, so that he normally the Hook 12 in the in Pig. 2 holds the free position shown.

Two plates 18, which are articulated by means of a pivot 19 on the frame, are by means of two links 20 with a Piston 21 connected. The links 20 skid are articulated at their two ends with pins 22 and 23 on the plates or on the piston. The piston 21 is received in a cylinder 24 which is firmly connected to the frame 10 and a spring 25 according to is printed on the right · Holds in the position shown in Fig. 2 the spring 25 has a locking pin 26 held on the plates 18 in contact with the rear side 27 of the hook 12 "

If there is a coupling rod 28 on a unit that is on the unit carrying the channels 10 is to be coupled in the direction of an arrow 29 to the hump 30 of the hook 12 approaches and touches it, or if such contact

209809 / U83

2U1180

-D-

through the. Approach of the frame to the coupling rod 28 comes about in the opposite direction, pushes the contact pressure at a point above the axis of the pin 11 immediately engages the hook 12 in the pig. 3 shown Locking position in which he is through the into his Recess 31 on the back of the hook engaged locking pin 26 is locked. The pins 26 and 11 are now on a line with the spring 25 and with the line of attack of the force exerted by the coupled part. As a result, will do not transfer any load in the direction of arrow 29 to the mechanical lock. To release the clutch, press on an inlet 33 in the cylinder 24 a hydraulic pressure is applied, which the piston 21 against the force of the spring 25 moves and pulls the locking pin 26 out of the recess 31. When this is done, the spring 32 can release the hook Bring 11 back into the free, notched position.

The coupling in the position shown is suitable as a coupling between vehicles. However, it can also be used in general, for example for locking aircraft landing gears or fire escapes, and in connection with cranes and other lifting equipment by means of the inventive Coupling in use have such a position that the line of scrimmage the force exerted by the coupled unit is aligned with the pins 11 and 26. '-'

20980 9 / U83

Claims (4)

2U1180 ~ 4 - Claims Coupling for the automatic locking of a to be coupled Unit "in contact with the unit carrying the coupling, characterized in that at one Frame (10) a hook (12) is hinged, which of one leather (32) is pressed into a notched position, and that a locking pin (26) is provided by a second spring (25) is pressed against the back (27) of the hook when the latter is notched in its Position "is, and in a recess (31) on the back of the hook engages when the hook is in a locking position through contact with the unit to be coupled is pivoted, in which it is locked by the locking pin, the locking pin (26) and the pivot point (11) of the hook when the hook is in its locked position occupies, are aligned with the line of attack of the force exerted by or on the coupled unit. 2. Coupling according to claim 1, characterized in that the locking pin (26) is seated on an arm (18) pivotally connected to the frame and that one in a cylinder (24) displaceable piston (25) which is arranged in such a way that it connects to the locking pin and the articulation point of the hook is on a line when the hook is in its locked position occupies, is connected to the arm (18) and housed the second I * eder (25) in the cylinder and acts against the piston. 3. Coupling according to claim 2, characterized in that the cylinder (24) has an inlet (33) for applying a hydraulic pressure in the sense that the locking pin is withdrawn from the recess (31) on the hook. 209809 / U83 4. Coupling according to claim 1 or one of the following claims, characterized in that the beacon is through a Connecting member (13) is connected to a plunger (15) which is acted upon by the spring (32), which the Pulls or pushes the hook into its disengaged position. 209-8 0-9 / 1483