Combo lock trailer

 

(57) Abstract:

Usage: refers to the structures trailers designed for connection with a tractor, made mostly in the form of a car or small tractor. The inventive combination locking device includes a housing 1, is rigidly connected to the trailer drawbar and the front 3 and rear 4 interchangeable crackers. The first biscuit 3 still installed relative to the housing 1, and the second cracker 4 is movable in the axial direction and is preloaded by the spring 6. In combination with the trailer device, the tractor seat hinge housing 1 is mounted a sinking liner, made with an internal toroidal shape with a hole for the installation of the bolt. 4 Il.

The invention relates to structures trailers designed for connection with a tractor, made mostly in the form of a car or small tractor.

It is known that to ensure bonding of the trailers of different models with different cars of the connecting elements of the locking device are standardized (OST 37.001.096-77).

When this spherical Cup corps castle ostrowia coupling is provided by a movable cylindrical rusk, constantly bogatogo spring and threaded tube with welded onto the handle. To charge the trailer to the vehicle, such as when braking, there was no compression of the spring and inadvertent uncoupling of the trailer, there is a safety pin that secures the movement of rusk. This is the design of the locking device, such as a trailer MMP-81021 (A. S. Melik-Sarkisyanz and Y. M. Vinokurov. Trailers for passenger cars. M. Transportation, 1979, S. 65).

It is also known that in order to ensure bonding of the trailers of different models with different tractors equipped with a standard trailer and towing devices (I. B. Barsky and other Soviet tractors. Engineering, M. 1970, S. 338), the trailers are equipped with trailer loop associated with the shaft and mounted into the mouth of the fork or the tow hook, lockable relevant devices, protecting them from uncoupling.

The disadvantage of these locking devices of trailers is their universalist, i.e. cargo car trailer it is impossible to attach to the trailer or towing device compact tractor and Vice versa, although they are almost equal capacity and height of the hitch.

An object of the invention is to eliminate the mentioned drawback, i.e. the expansion of the scope of the trailer.

This objective is achieved in that the combined locking device of the trailer (used mainly passenger cars and small tractors) includes a housing rigidly connected with the end of the trailer drawbar, front and rear removable crackers, and dried, mounted in the longitudinal bore of the housing made in the form of spherical half-bowls, put on the head of the ball of the trailer hitch of the vehicle. The first biscuit still installed relative to the housing, and the second for backlash-free coupling is movable in the axial direction and is preloaded by a spring. In this case the locking device is made in the form of a trailer loop located coaxially relative to the vertical axis of the ball of the trailer hitch. In combination with the trailer device, the tractor seat hinge housing is mounted a sinking liner, made with an internal toroidal shape with a hole for the installation of the bolt.

Unlike analogue and prototype combined locking device of the trailer allows Agregator devices.

In Fig. 1, 2 shows the locking mechanism of the trailer in the unit ball of the trailer hitch of the vehicle; Fig. 3, 4 same, in Assembly with the towing and towed devices of the tractor.

Case 1 locking device of the trailer is rigidly connected with the shaft 2. In the longitudinal bore of the housing 1 are mounted the front 3 and rear 4 interchangeable crackers, made in the form of spherical half-bowls, put on the head of the ball 5 trailer hitch of the vehicle. Front rusk 3 is fixed relative to the housing against axial movement forward and turns with a cylindrical belt, supported in the socket bore of the housing 1. Backlash-free coupling with ball 5 is provided by a movable cylindrical rusk 4, constantly bogatogo spring 6 and the threaded plug 7 welded to the handle 8. In an annular groove rusk 4 insert the safety pin 9. Additional fuses from uncoupling serve protruding inner end of the handle 8, which prevents the movement of rusk 4, as well as a safety chain (not shown).

Case 1 locking device made in the form of trailer hinge, the seat of which is coaxially relative to the vertical axis of the ball 5 traction-caregatineau with hook 10 towing device of the tractor, equipped with a latch 11. In combination with the trailer device, the tractor seat hinge housing 1 is mounted a sinking liner 12 is made with an internal toroidal shape with a hole for the installation of the bolt 13 with the possibility of angular rotation of the trailer relative to the General longitudinal axis of the unit.

Before coupling the trailer with the car, you need to Unscrew the stopper 7 a few times with the handle 8, to remove the safety pin 9, to pull the trailer to the vehicle, lift the shaft 2 to move the rusk 4 and wear a spherical policharki crumbs 3 and 4 on the head of the ball 5 trailer hitch. Then you need to wrap up against the stop tube 7 and to insert the pin 9.

Before coupling the trailer to the tractor, equipped with a towing device, parts 3, 4, 6 dismantled. The hitch is made by putting a loop of the housing 1 on the tow hook 10 device. Then the position of the body 1 relative to the hook 10 is latched by the latch 11.

Front hitch bracket 14 of a tractor with a locking device of the trailer compared with hitch, equipped with a tow hook, seat hinge housing 1 additionally mounted a sinking liner istwa. Then you must install the bolt 13 and its lock.

Combined locking device of the trailer, designed for connection with the tractor, made mostly in the form of a car or small tractor, containing rigidly connected with the drawbar of the trailer, made with a longitudinal bore of the housing of the locking device and the locking device is equipped with two removable crumbs, made with the possibility of installation in the longitudinal bore of the housing, one of which is mounted stationary and the other with the possibility of longitudinal movement relative to the housing and podrazumevaetsya about it, each of crackers one of its surfaces has the opportunity to interact with the hitch ball, which can be equipped with a tractor, characterized in that in case the locking device is made elliptical, vertically located hole for possible inclusion in it of the hook, which can be equipped with a tractor, and a locking mechanism of a trailer equipped with a removable cushioning insole is made with a hole toroid shape and can be installed in an elliptical housing bore, and the inner surface of the hole at back the Chom, which may be provided with coupling plug.

 

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