Trailer hitch for trailer trucks

 

(57) Abstract:

The inventive trailer hitch for the trailer contains a ball bearing 1 and the case 2. In case there is a moveable liner 5, which is spring-loaded relative to the Cup 6. Glass 6 interacts with the Cam 7, which is mounted on the shaft 8. At the end of the shaft 8 is two shoulders lever 10, one end of which is mounted the handle 9, and the other protrusion to limit rotation. In the housing 2 and on the two shoulders of the lever 10 is the two shoulders latch lever. 3 Il.

The invention relates to transport means, namely, towing ball type devices designed to attach the trailer to the car.

The objective of the invention to simplify the design and manufacturing techniques for reducing the number and use of parts of simple geometric forms in the drive from the handle to the rolling bearing, and improve working conditions.

The essence of the invention is illustrated by drawings, where Fig. 1 shows a trailer hitch in coupled condition,

in Fig. 2 trailer hitch in rosapenna condition,

in Fig. 3 section a-a in Fig. 1.

The device operates as follows.

The original position of the wheel lock to mating trains shown in Fig. 2. Locking hitch lock ball bearing 1 is performed in the following sequence: fall housing 2 castle on a ball bearing 1 from the starting position of the handle 9 is turned by the angle 195-200oto a fixed position, i.e. when the locking finger 12, biasing spring 13 will be included in the planting hole is I, the spring 4 and the movable liner 5 to the stop of the ball 1 in a stationary liner 3. Upon reaching the angle of rotation of the arm 9 /of the shaft 8/ is 180othere is a choice of the gaps in the chain of parts of the Cam 7, the Cup 6 is movable liner 5, the ball bearing 1 and the fixed liner 3. This provision is regulated by the spacers 14. But as mentioned above, the starting position of the arm 9 in the locked position of the lock corresponds to the passage of the Cam 7 "dead spots" on the corner of 15-20o. This is achieved by "samopoczucia" arm 9 and the gap "a" between the glass 6 and a movable liner 5, which provides the best working conditions hitch for wear and dynamic force of the trailer to the tractor.

Fixation of the arm 9 in this position is ensured by the fact that its further rotation after the angle of 15-20o/in addition to the stopper 12/ limits tide "b" on the base 10 which rests on the housing 2, go back to the "dead point" without the application of external forces to the arm is impossible, because it is necessary to overcome the friction torque in a pair of the Cam 7 of the Cup 6, compressing the spring 4 on the magnitude of the gap "a", having a sufficiently large force of 140 kg

Backlash-free connection of the ball 1 with the liner 3 and 5 provides the spring 4.

Trebovaniyam hitch. This device is spring-loaded retaining Cup 12, which automatically closes the handle 9 through the lever on the housing 2 of the castle when combining holes.

The release of the trailer, rather thumb drown the button 11 /when the locking finger 12 will be released from the valve base 10/ and turn the knob 9 on the angle 195 - 200othe Cam 7 rotates together with it in the opposite direction, the drive elements of the Cup 6, the spring 4 and the movable liner 5 will take the free position and the housing 2 of the castle freely removed from the ball joint 1.

Trailer hitch for a trailer containing mounted on one link of the trailer hitch ball and the other building, which is movable liner, spring-loaded relative to the glass, which is made to move along the body and its smooth interaction with the Cam, placed on a vertically located and installed in the housing shaft, one end of which is secured a horizontal arm with a fixed handle and the lever and in case there is a mechanism of fixing the working position of the lever, characterized in that the casing is installed at the middle part, and on one shoulder, two shoulders arm fixed arm, and on the other shoulder is arranged to interact with the tide housing ledge, and the eccentricity of the Cam exceeds a value equal to half the sum of the lengths of the overlapping coupling ball movable and immovable liners, and the mechanism of fixing the operating position of the two shoulders of the lever is made in the form of interacting one ends coaxially located buttons and thumb, and the button is placed in the hole two shoulders of the lever, and a finger placed in the housing bore and is spring-loaded on it.

 

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FIELD: transport engineering.

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2 dwg

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