Introduction

A tractor is a general large truck or semi-trailer that is towed by a tool between the front and the car, that is, the front of thecar can be separated from the original car and tow other cars, and the car can also be separated from the original car and pulled by other fronts. . The front of the car with driving abiity is called a tractor, and the car with no traction and driving ability inthe back is called a trailer, and the trailer is towed by the tractor. There are two ways to connect the tractor and the trailer. thefirst is that the front half of the trailer is placed on the traction saddle above the rear section of the ractor, and the bridge behindthe tractor bears part of the weight of the trailer, which is the semi-trailer, the second The first type is that the front end of thetrailer is connected to the rear end of the tractor. The tractor only provides forward puling force and drags the trailer, but doesnot bear the downward weight of the trailer.This is the full trailer.

It is often used for the transportation of large quantities of goods within or between workshops, such as transportation from automobile manufacturing warehouses to assembly lines, and luggage transportation at airports.

Working Principle

Its working principle is: there are two traction seat supports on the two sides under the seat cover made of steel plate, which are connected with the seat cover by a pin, and the traction seat base can rotate back and forth relative to the seat cover with the pin as the center. , The bottom surface of the base of the traction seat is connected with the trailer to be pulled by bolts, and a locking mechanism composed of horseshoes, inclined irons, hook tongues, adjustment discs, cross bars, tie rods, and springs is arranged under the seat cover, and the horseshoes are fixed on the seat. On the cover plate, the hook tongue, the tie rod and the cross bar are connected with a pin shaft, and the inclined iron is also connected with a pin shaft, and the tie rod is connected to the rib plate under the seat cover plate by a spring. The utility model is characterized in that the two tails behind the saddle-shaped seat cover are large arcs, and the middle has a butterfly-shaped concave surface, which divides the entire plane into five parts of similar size.

Advantage

1. Anti-skid: Prevent the idling of the driving wheels when the vehicle is driving on wet and slippery roads such as snow, so that the vehicle can start and accelerate smoothly. Especially on snowy or muddy roads, the traction control system ensures smooth acceleration and prevents the vehicle from rolling or drifting due to slippage of the drive wheels.

2. Flexibility: The car train has better maneuverability when pulling the car.

3. Reliable work: to ensure reliable, convenient and rapid disconnection between the tractor and the trailer.

4. Stable: The traction force can be smoothly transmitted to the trailer, which has a certain buffering effect on the impact load.

Overhaul of Single Axle Traction Seat

1. During maintenance, check the parts Of the traction seat, especially the wear of the traction pin, traction pin plate, semi-horizontal shaft, etc., and lubricate these parts; tighten the bolts of the support seat, and replace the bolts if necessary; Adjust the matching clearance between the locking hook and the traction pin .

2. When dismantling the traction seat for inspection, pay attention to check whether the traction seat itself has cracks and serious wear . If there are cracks or serious wear and the traction seat is deformed or too thin, new parts should be replaced; check the lock hole, and the traction pin can be used for matching detection. , If the wear exceeds the limit and the fit gap is large, it can be repaired by surfacing and machining to the required size, or the lock hook, lock block and wear ring can be replaced for repair; check the fit gap between the support and the body, if the fit is loose, then Replace the rubber elastic bushing; check the locking mechanism, the detachment and connection should be smooth and crisp, the safety device should be stable and reliable, if there is any abnormality, check the hook tension spring and the numbered handle tension spring, and check the safety mechanism . Replace with new one.

Overhaul Of Double Axle Traction Seat

In addition to completing the same items as the single-axle tow mount, the inspection and maintenance contents of the dual-axle tow mount should also pay attention to the following points:

1. Check the integral horizontal and vertical shafts. If they are deformed and severely worn, they should be welded to the required size, repaired or replaced with new parts, to ensure that the traction seat can swing flexibly horizontally and vertically, and the matching clearance should meet the standard.

2. Check the lateral swing angle and the buffer devices on the two sides. If the lateral swing angle is too large, adjust it through the wedge blocks on the two sides. If the buffer spring or rubber block is aging, replace it with a new one.