CN204548282U - There is the trailer of long wheelbase structure - Google Patents

Abstract

The trailer with a large wheelbase structure of the utility model includes a vehicle frame, and a plurality of vehicle axles are arranged under the vehicle frame, and is characterized in that: the number of the vehicle bridges is 3 or more, and the front vehicle bridge or the rear vehicle The bridge is a follow-up steering axle; when the front axle adopts a follow-up steering axle, the distance between the front axle and the middle axle is greater than the distance between the middle axle and the rear axle; When the steering axle is steered, the distance between the front axle and the middle axle is smaller than the distance between the middle axle and the rear axle. By setting the front axle or the rear axle as a follow-up steering axle equipped with a single tire, the turning radius is reduced and the reversing function is realized; the front axle is raised by setting the lifting mechanism, which is beneficial to reduce friction for fuel economy. The trailer of the utility model reduces the span between the front axle and the tractor, realizes the light weight of the vehicle frame, not only reduces the fuel consumption, but also can carry more articles, the beneficial effect is remarkable, and it is convenient for application and popularization.

Description

Trailer with large wheelbase construction

technical field

The utility model relates to a trailer with a large wheelbase structure, in particular to a trailer with a large wheelbase structure in which the distance between the front axles is greater or smaller than the distance between the rear axles.

Background technique

Trailer is divided into full trailer and semi-trailer in terms of structure. The full trailer can rely on its front and rear two sets of axles (axles) to carry its own weight, while the semi-trailer only has multiple sets of axles at the back, and the front section must be connected by the traction pin. Can only be done on a tow vehicle. The frame of a full trailer and a semi-trailer is composed of longitudinal beams and beams fixed together, especially for a semi-trailer, due to the large span between the axle end axle and the traction pin at the front end, in order to ensure the strength of the frame Therefore, it is bound to require that the crossbeam forming the vehicle frame has stronger anti-torsion and anti-fatigue properties. In this way, the crossbeam of the vehicle frame is welded with a larger thickness of steel plate, so that the weight of the formed vehicle frame is very large.

With the demand for lightweight trailers, the disadvantages of this heavy frame are becoming more and more prominent. The lightweight trailer body can not only reduce the damage to the road surface, but also carry more goods, and is also conducive to saving fuel. , it can be said that there are many benefits. In order to use lightweight steel plates on the trailer and ensure its strength, it is necessary to make corresponding improvements to the existing trailer structure. For example, the invention patent document with the patent number CN201010546066.8 and the invention name "trailer and fully trailered vehicle" specifically discloses a trailer equipped with a trailing axle. Although the trailing axle in this structure can follow the traction The car can turn and reverse, but because the structural distribution of the axle has not changed, it cannot meet the requirements of lightweight body.

Contents of the invention

In order to overcome the shortcomings of the above-mentioned technical problems, the utility model provides a trailer with a large wheelbase structure.

The utility model has a trailer with a large wheelbase structure, which includes a vehicle frame for fixing and supporting. The upper part of the vehicle frame is used to carry goods. Composed of beams welded together with it; its special feature is: the number of said axles is 3 or more, and the front or rear axles are follow-up steering axles; follow-up steering is used in the front axle When the axle is used, the distance between the front axle and the middle axle is greater than the distance between the middle axle and the rear axle; when the rear axle adopts a follow-up steering axle, the distance between the front axle and the middle axle The distance is less than the distance between the middle axle and the rear axle.

Because the distances between the axles of existing semi-trailers are all equal, this makes the front axle farther away from the traction pin. In order to ensure the strength of the axle, the whole vehicle frame must adopt thicker steel plates, so that the entire vehicle frame The weight is very large, and it is difficult to reduce the weight of the trailer. When the distance between the middle axle and the rear axle remains the same, increasing the distance between the front axle and the middle axle is equivalent to moving the front axle forward and shortening the front axle and the traction pin. In the case of reducing the thickness of the frame steel plate, a frame with sufficient strength can be made, and the weight of the frame is reduced, which realizes the light weight of the frame and is conducive to carrying more goods .

In the trailer with a large wheelbase structure of the utility model, when the front axle adopts a follow-up steering axle, the distance between the front axle and the middle axle is 1.5 times the distance between the middle axle and the rear axle. ~3 times. When the rear axle adopts a follow-up steering axle, the distance between the middle axle and the rear axle is 1.5 to 3 times the distance between the front axle and the middle axle. Preferably 2 times.

In the trailer with a large wheelbase structure of the utility model, the front axle or the rear axle is a follow-up steering axle equipped with a single tire, and the remaining axles are non-serving steering axles equipped with twin tires. The front axle is set as a follower axle, so that the tires on the front axle can rotate with the steering of the vehicle body, so that the entire trailer can be reversed, the turning radius is shortened, and the wear of the tires is reduced.

In the trailer with a large wheelbase structure of the utility model, the front axle or the rear axle is provided with a lifting mechanism, and the driving of the front axle by the lifting mechanism can control the contact or separation of the tires from the ground. When the trailer is empty or carries less cargo, the front axle can be raised through the lifting mechanism, which reduces the frictional resistance when the front axle contacts the ground, which is beneficial to reduce fuel consumption.

The beneficial effects of the utility model are: the utility model has a trailer with a large wheelbase structure, by designing the distance between the front axle and the middle axle to be greater than the distance between the middle axle and the rear axle, or The distance between the middle axle and the rear axle is designed to be greater than the distance between the front axle and the middle axle, preferably 1.5 to 3.0 times, which effectively shortens the distance between the front axle and the traction pin. The span between the front axle and the tractor is reduced, and the steel plate with a relatively thin thickness can meet the strength requirements of the frame, which realizes the lightweight of the frame, reduces fuel consumption, and can carry more items , the beneficial effect is remarkable, and it is convenient for application and promotion.

Further, by designing the front axle or the rear axle as a follow-up steering axle equipped with a single tire, the front axle can rotate with the steering of the frame, reducing the turning radius of the vehicle and realizing the stability of the trailer. Reversing function. By setting up a lifting mechanism that can drive the front axle to move up and down, when the vehicle is empty or carries less cargo, by raising the front axle, the tires on the front axle are separated from the ground, which is beneficial to reduce friction. Achieve fuel savings.

Description of drawings

Fig. 1 is the structural representation of the trailer with large wheelbase structure of the present utility model;

Fig. 2 is the structural schematic diagram of follow-up steering axle in the utility model;

Fig. 3 is the three-dimensional view of follow-up steering axle in the utility model;

Fig. 4 is the sectional view of A-A section among Fig. 2;

Fig. 5 is the sectional view of B-B section among Fig. 2;

Fig. 6 is a schematic diagram of the structure when the front axle is raised in the utility model.

In the figure: 1 frame longitudinal beam, 2 door panels, 3 front axles, 4 middle axles, 5 rear axles, 6 traction pins, 7 outriggers, 8 main shafts, 9 steering linkages, 10 tires.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

For previous trailers, especially semi-trailers, the distance between the three or more axles at the rear end is equal and relatively close, which makes the distance between the most front axle and the traction pin The distance is very large. In order to ensure the strength of the frame, thick steel plates must be used, resulting in a very large weight of the entire frame itself, which reduces the weight of the cargo, which is not conducive to the realization of the lightweight requirements of the trailer.

As shown in Figure 1, the structure schematic diagram of the trailer with large wheelbase structure of the present invention is provided, which is composed of vehicle frame longitudinal beam 1, front axle 3, middle axle 4, rear axle 5, vehicle frame Composed of frame longitudinal beams 1 and beams welded together, the vehicle frame can be a flatbed car, or a door panel car or a barn car. If it is a barn car, the surroundings above the frame are set as door panels. The bottom of the vehicle frame is provided with 3 or more vehicle axles, and in the case of 3 vehicle axles, they are respectively marked as the front vehicle axle 3, the middle vehicle vehicle axle 4 and the rear vehicle vehicle axle 5 from front to rear.

The distance between the shown front axle 3 and the middle axle 4 is greater than the distance between the middle axle 4 and the rear axle 5, and the distance between the front axle 3 and the middle axle is the distance between the middle axle 4 and the rear axle. 1.5 to 3 times the distance between the bridges 5, preferably 2 times. In this way, the distance between the front axle 3 and the traction pin 6 is shortened, so that the span between the front axle 3 and the tractor is shortened, and the relatively thin steel plate is used to make the vehicle frame to meet the strength requirements, realizing the vehicle The lightweight is not only conducive to saving natural desires, but also can carry more goods, and the beneficial effect is remarkable.

Since the front axle 3 has moved a relatively large distance forward, in order to ensure the smooth forward and reverse movement of the entire trailer, the front axle 3 adopts a follow-up steering axle with a single tire. When the vehicle turns, the front vehicle The wheel belt on the bridge 3 can rotate with the steering of the vehicle, which shortens the turning radius and can also realize the reverse function simultaneously.

In order to further increase the fuel-saving performance of the trailer and reduce the friction between the tire and the road, the lower end of the frame is provided with a lifting mechanism that can control the lifting of the front axle 3. When carrying goods, the lifting mechanism drives the front axle 3 to the lowest position. , the tires on the front axle 3 are in contact with the ground to realize normal transportation without goods. When the trailer is unloaded or carries very few goods, the lifting mechanism drives the front axle 3 to rise, and the wheel belt breaks away from the ground. As shown in Fig. 6, the structure diagram when the front axle in the present utility model is raised is provided, and the tire on the front axle 3 is separated from the ground at this moment, which helps to reduce the friction between the tire and the ground, and realizes energy saving .

Similarly, when the rear axle 5 adopts a follow-up steering axle, the distance between the axle 3 and the middle axle 4 should be less than the distance between the middle axle 4 and the rear axle 5, and the distance between the middle axle 4 and the rear The distance between the axles 5 is 1.5 to 3 times, preferably twice, the distance between the front axle 3 and the middle axle 4 .

As shown in Figure 2 and Figure 3, the structural representation of the follow-up steering axle in the utility model is provided, and as shown in Figure 4 and Figure 5, the structural representation of the A-A section and the B-B section in Figure 2 is provided, as shown The follow-up steering axle includes a main shaft 8 and a steering connecting rod 9, and the tire belts at both ends are rotatably fixed on the main shaft 8 and the steering connecting rod 9, so that the tires can be steered with the trailer.

In the trailer with a large wheelbase structure of the utility model, the distance between the front axle and the middle axle is designed to be greater than the distance between the middle axle and the rear axle, thereby reducing the distance between the front axle and the tractor. The use of relatively thin steel plates can meet the strength requirements of the frame, realize the lightweight of the frame, not only reduce fuel consumption, but also carry more items, the beneficial effect is remarkable, and it is easy to apply and promote.

Claims (4)

1. have a trailer for long wheelbase structure, comprised vehicle frame that is fixing and supporting role, the top of vehicle frame is used for bearing goods, and the below of vehicle frame is provided with multiple vehicle bridge, and vehicle frame is by chassis side rail (1) and form with the crossbeam of its weld together; It is characterized in that: the quantity of described vehicle bridge is more than 3 or 3, front axle (3) or rear axle (5) are follow-up steering vehicle bridge; When front axle (3) adopts follow-up steering vehicle bridge, the distance between front axle (3) and middle part vehicle bridge (4) is greater than the distance between middle part vehicle bridge (4) and rear axle (5); When rear axle (5) adopts follow-up steering vehicle bridge, the distance between front axle (3) and middle part vehicle bridge (4) is less than the distance between middle part vehicle bridge (4) and rear axle (5).

2. the trailer with long wheelbase structure according to claim 1, it is characterized in that: when front axle (3) adopts follow-up steering vehicle bridge, the distance between described front axle (3) and middle part vehicle bridge (4) is 1.5 ~ 3 times of the spacing of middle part vehicle bridge (4) and rear axle (5); When rear axle (5) adopts follow-up steering vehicle bridge, the distance between middle part vehicle bridge (4) and rear axle (5) is 1.5 ~ 3 times of the spacing of front axle (3) and middle part vehicle bridge (4).

3. the trailer with long wheelbase structure according to claim 1 and 2, is characterized in that: described front axle (3) or rear axle (5) are for being furnished with the follow-up steering vehicle bridge of single tire, and all the other vehicle bridge are that the non-follow-up of joining twins turns to vehicle bridge.

4. the trailer with long wheelbase structure according to claim 1 and 2, it is characterized in that: described front axle (3) or rear axle (5) are provided with lifting mechanism, by lifting mechanism, ordering about of front axle (3) control wheel tire and ground can be touched or be separated.