Towbars for trucks - features and benefits
Content
Thus, towbars for KamAZ trucks are located in such a way that when the car is put back, the trailer drawbar enters the hitch, is automatically fixed and centered in it. Retention occurs due to a vertically moved finger. The design of the gapless type and the stopper, which prevents self-uncoupling, make the device reliable, and the existing catcher is convenient for the KamAZ driver.
To increase the possibilities when transporting various (most often large-sized) items, additional equipment helps drivers. Including a cargo platform on the towbar of the car.
Types of towbars for trucks
To attach a trailer to a tractor vehicle, towbars are used - towing devices (TSU), which differ in types, depending on the design, fastening system and permissible loads:
- hook (hook-loop tandem);
- forked (pivot-loop combination);
- ball (hemisphere for connection with mating coupling head).
for trailer
Such transport platforms can be up to 750 kg (light) and more (heavy).
Tow bar for trucks
The hitch for a truck trailer is a forged ball with 2 mounting holes. Such a towing device has received the greatest use for completing light-duty trucks: "Bychkov", "Gazelle", "Sable" with a carrying capacity of up to 2 tons.
For cargo platform
In this case, preference is given to hook types of towbars for trucks, which are distinguished by ease of manufacture, low weight, and large flexibility angles. Such devices are most suitable for the movement of road trains on bad roads with difficult terrain.
To prevent spontaneous disconnection, the cargo platform on the towbar of the car is equipped with a device with a safety lock and cotter pin.
Advantages of a towbar for a truck
Towbars for trucks must meet certain requirements, including:
- high reliability;
- ensuring the necessary folding angles of the road train;
- ease of connection (the speed of hitching actions depends on this).
The listed characteristics correspond to the device of the "hook-loop" type. This is the best option for undeveloped roads.
Turnbuckle up close
The product is characterized by low weight, which facilitates the coupling and separation of parts of the road train. Usually this is done manually. A disadvantage of the design can be considered a rather large (up to 10 mm) play in the joints, which increases the dynamic loads and wear of the device parts. The weight of the hook-type hitch does not exceed 30 kg.
The lock is designed in such a way as to exclude the self-disengagement of the road train during movement. To do this, there must be at least 2 safety mechanisms. The hook must be able to rotate freely around its longitudinal axis.
Mounting features
Thus, towbars for KamAZ trucks are located in such a way that when the car is put back, the trailer drawbar enters the hitch, is automatically fixed and centered in it. Retention occurs due to a vertically moved finger. The design of the gapless type and the stopper, which prevents self-uncoupling, make the device reliable, and the existing catcher is convenient for the KamAZ driver.
To dock semi-trailers with a tractor, a fifth wheel coupling mechanism is used, consisting of a load-carrying plate with a slot for the king pin of the towed cargo platform to enter into it. In this case, one or two degrees of freedom are used: in the longitudinal and transverse planes. This design is not subjected to shock loads, increases the service life of the road train as a whole.
