Trailer with low-wind-resistance side skirt

Abstract

The utility model discloses a trailer with low-wind-resistance side skirts, which relates to the technical field of trailers and comprises a frame extending front and back, a carriage mounted above the frame and rear wheel sets mounted on the left side and the right side of the frame. The left side and the right side of the bottom of the frame are each fixedly provided with a side apron board, the side apron boards are arranged in the front-back direction of the frame, the upper portions of the side apron boards are fixedly connected with the bottom of the frame, the bottoms of the side apron boards extend downwards, a certain safety distance exists between the bottoms of the side apron boards and the ground, and arc-shaped containing grooves are formed in the front ends of the side apron boards. After the structure is adopted, the arc-shaped containing groove is formed, the arc-shaped containing groove and the traction wheel can be subjected to profile modeling, the matching gap between the arc-shaped containing groove and the traction wheel is reduced to the maximum extent, the amount of airflow entering the bottom of a compartment from the gap is reduced, aerodynamic resistance is reduced, and energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of trailers, and particularly relates to a trailer with a low-drag side skirt. Background Art

[0002] When a trailer travels on a highway, its fuel consumption is mainly used to overcome aerodynamic drag. The drag reduction of the trailer mainly focuses on optimizing the shape of the carriage and installing a tailboard to reduce the tail drag of the carriage. However, the bottom structure of the trailer also contributes a considerable part of the drag, but there are relatively few drag reduction devices for the bottom of the trailer currently.

[0003] Chinese Patent CN 215245164U discloses a semi-trailer with side skirt plates. By adding two side skirt plates, the air flow at the bottom of the carriage is smoothly guided to the tail of the carriage, effectively avoiding the impact of high-speed air flow entering the bottom of the carriage from both sides on the rear wheel set and the components at the bottom of the carriage, reducing the aerodynamic drag of the trailer, and achieving the purpose of reducing fuel consumption.

[0004] However, the side skirt plates in the prior art have the following problems: 1. The front end of the side skirt plate is a right-angle structure, and the fit between it and the traction wheels of the towing vehicle head is not tight enough, so there is still air flow entering the bottom of the carriage from both sides, impacting the rear wheel set and the components at the bottom of the carriage, and there is a certain amount of aerodynamic drag; 2. The side skirt plate is relatively thin and has low strength, and is prone to deformation or damage; 3. The side skirt plate is located outside the rear wheel set of the vehicle. When the rear wheel needs to be replaced, the side skirt plate needs to be disassembled, and after the replacement is completed, it needs to be reinstalled, and the operation is very cumbersome. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a trailer with a low-drag side skirt, which can reduce the fit gap between the front end of the side skirt plate and the traction wheels, thereby reducing the amount of air flow entering the bottom of the carriage from this gap, reducing aerodynamic drag, and reducing energy consumption.

[0006] To achieve the above purpose, the utility model provides a trailer with a low-drag side skirt, including a frame extending front and rear, a carriage installed above the frame, and rear wheel sets installed on both left and right sides of the frame; side skirt plates are respectively fixedly installed on both left and right sides of the bottom of the frame. The side skirt plates are arranged along the front and rear direction of the frame. The upper part of the side skirt plate is fixedly connected to the bottom of the frame, its bottom extends downward and has a certain safety distance from the ground, and its front end is provided with an arc-shaped receiving groove.

[0007] After adopting the above structure, by setting the arc-shaped receiving groove, the arc-shaped receiving groove can be shaped to fit the traction wheels, minimizing the fit gap between them, reducing the amount of air flow entering the bottom of the carriage from this gap, reducing aerodynamic drag, and reducing energy consumption.

[0008] In order to smoothly direct the air flow to the rear of the carriage, reduce the air flow disorder caused by the convex surface, and increase the wind resistance of the side skirt, the outer side surface of the side skirt is flush with the side surface of the carriage.

[0009] In order to strengthen the bottom strength of the side skirt and at the same time well direct the air flow of the side skirt to avoid the air flow entering the bottom of the carriage from the bottom of the side skirt and causing wind resistance, an arc surface bent towards the bottom of the frame is provided at the bottom of the side skirt.

[0010] In order to facilitate the replacement and maintenance of the rear wheel set of the vehicle without disassembling the side skirt, reduce the labor intensity and workload, a wheel groove is provided at the position of the side skirt corresponding to the rear wheel set, and the rear wheel set leaks out from the wheel groove.

[0011] In order to avoid a gap between the fender and the wheel groove, resulting in the air flow entering the bottom of the carriage from this gap, a protective cover is fixed on the circumferential direction of the wheel groove where the rear wheel set is located. The protective cover covers the outside of the rear wheel set and is used as a fender for the rear wheel set.

[0012] In order to reduce the maintenance and production costs and at the same time increase the strength of the side skirt, the side skirt includes multiple side plate units spliced with each other, and each side plate unit is fixed to the bottom of the frame.

[0013] In order to strengthen the side skirt, a strengthening bracket is fixed on the inner side surface of the side skirt.

[0014] In order to ensure the fixing strength of the side skirt, each side plate unit is fixed to the frame through multiple mounting brackets.

[0015] In order to further reduce the wind resistance, the positions of the columns on both sides at the front end of the carriage are set as rounded corner structures, and the side walls of the carriage are plane structures.

[0016] In order to direct the air flow at the rear of the carriage, a tail plate is installed at the rear of the carriage, and the tail plate and the side skirt have a smooth transition.

[0017] After adopting the above technical solutions, the beneficial effects of the present utility model are as follows:

[0018] A trailer with a low-wind-resistance side skirt of the present utility model solves the technical problem in the prior art that the matching gap between the front end of the side skirt and the towing wheel is too large, resulting in the air flow still being able to enter the bottom of the carriage and causing wind resistance. The present utility model reduces the amount of air flow entering the bottom of the carriage from this gap and reduces the aerodynamic resistance and energy consumption by providing an arc-shaped receiving groove that can be shaped to fit the towing wheel and minimizing the matching gap between them. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a schematic structural diagram of a trailer with low-drag side skirts of the present utility model;

[0020] Figure 2 is Figure 1 a schematic structural diagram of the middle frame, rear wheel set of the vehicle, and side skirt plate;

[0021] Figure 3 is Figure 2 the front view of

[0022] In the figure, 1 is the frame, 2 is the carriage, 21 is the column, 22 is the tail plate, 3 is the rear wheel set of the vehicle, 4 is the side skirt plate, 41 is the receiving groove, 42 is the wheel groove, 43 is the protective cover, 44 is the strengthening bracket, 45 is the mounting bracket, and 46 is the arc surface. Specific embodiments

[0023] The present utility model will be further described below with reference to the accompanying drawings.

[0024] All orientations referred to in this specification are based on the orientation of a trailer with low-drag side skirts of the present utility model during normal operation, without limiting its orientation during storage and transportation, only representing the relative positional relationship and not the absolute positional relationship.

[0025] As Figure 1 and Figure 2 collectively shown, a trailer with low-drag side skirts includes a frame 1 extending front and rear, a carriage 2 mounted above the frame 1, and rear wheel sets 3 of the vehicle mounted on the left and right sides of the frame; side skirt plates 4 are respectively and fixedly mounted on the left and right sides of the bottom of the frame 1. The side skirt plates 4 are arranged along the front and rear direction of the frame 1, and the upper part of each side skirt plate 4 is fixedly connected to the bottom of the frame 1. Its bottom extends downward and has a certain safety distance from the ground, and its front end is provided with an arc-shaped receiving groove 41. Along the forward direction of the trailer, the end located in front of the side skirt plate 4 is defined as the front end, and the end located behind the side skirt plate 4 is defined as the rear end.

[0026] It should be noted that the towing wheels of the towing vehicle head (not shown in the figure) are located at the front end of the carriage 2, and the towing wheels are located in the receiving groove 41. The receiving groove 41 is close to the towing wheels, but the two do not contact. By setting the arc-shaped receiving groove 41, the arc-shaped receiving groove 41 can be shaped to fit the towing wheels, minimizing the mating gap between them, reducing the amount of air flow entering the bottom of the carriage through this gap, reducing the aerodynamic drag, and reducing the energy consumption.

[0027] The outer side surface of the side skirt plate 4 is flush with the side surface of the carriage 2, so that the side skirt plate 4 and the carriage 2 are consistent in the width direction, guiding the air flow smoothly to the tail of the carriage 2, reducing the air flow disorder caused by the raised surface, and increasing the wind resistance of the side skirt plate 4.

[0028] As Figure 3As shown in the figure, an arc surface 46 that bends towards the bottom of the vehicle frame 1 is provided at the bottom of the side skirt panel 4. The inward-bending arc surface 46 can strengthen the bottom strength of the side skirt panel 4, and at the same time, well guide the air flow of the side skirt panel 4, avoiding the air flow from entering the bottom of the carriage from the bottom of the side skirt panel 4 and causing wind resistance.

[0029] In order to facilitate the replacement and maintenance of the rear wheel set 3 of the vehicle without disassembling the side skirt panel 4, reducing the labor intensity and workload, a wheel groove 42 is provided at the position of the side skirt panel 4 corresponding to the rear wheel set 3, and the rear wheel set 3 leaks out from the wheel groove 42.

[0030] As is well known, fenders are provided on the rear wheel set 3 of the vehicle. In order to avoid gaps between the fenders and the wheel groove 42, resulting in air flow entering the bottom of the carriage from the gaps, a protective cover 43 is fixed on the wheel groove 42 in the circumferential direction of the rear wheel set 3. The protective cover 43 covers the outside of the rear wheel set 3 and the protective cover 43 is used as the fender of the rear wheel set 3.

[0031] The side skirt panel 4 includes multiple side plate units spliced together. In this embodiment, three side plate units are provided, and in actual application, it can be set to four or other numbers according to needs, and this embodiment does not limit this. The side skirt panel 4 is spliced by multiple side plate units. When the side skirt panel 4 is damaged, only the damaged side plate unit needs to be replaced, and there is no need to replace the whole, thus reducing the maintenance cost. In addition, the small-area side plate units can reduce the production cost, and at the same time are convenient for installation. In addition, reducing the single-piece area of the side skirt panel 4 can improve its strength. Each side plate unit is fixed to the bottom of the vehicle frame 1.

[0032] Because the thickness of the side skirt panel 4 is relatively low, in order to increase its strength, a reinforcing bracket 44 is fixed on the inner side surface of each side skirt panel 4. The reinforcing bracket 44 is a frame structure welded by steel pipes, and the reinforcing bracket 44 is fixed to the inner side of the side skirt panel 4 by rivets or bolts, thereby strengthening the side skirt panel 4.

[0033] Because the reinforcing bracket 44 is provided on the inner side of the side skirt panel 4, its weight is bound to increase. In order to ensure the stable fixation of the side plate unit, each side plate unit is fixed to the vehicle frame 1 by multiple mounting brackets 45.

[0034] In order to further reduce wind resistance, in this embodiment, the structure of the carriage 2 is also improved. The positions of the columns 21 on both sides of the front end of the carriage 2 are set as rounded corner structures, and the rounded corner structures are convenient for guiding the air flow backward. The side wall of the carriage 2 is a plane structure. The plane-structured side wall is more conducive to the flow of air flow and reduces wind resistance compared with the side wall of the traditional corrugated board structure.

[0035] A tail plate 22 is installed at the rear of the carriage 2, and the tail plate 22 has a smooth transition with the side skirt plate 4. The tail plate 22 is beneficial to guiding the airflow at the rear of the carriage 2 backward, avoiding the occurrence of turbulent flow at the rear of the carriage 2 and causing the problem of excessive wind resistance.

[0036] The trailer with a low-wind-resistance side skirt of the present utility model solves the technical problem in the prior art that the matching gap between the front end of the side skirt and the towing wheel is too large, resulting in the airflow still being able to enter the bottom of the carriage and causing wind resistance. The present utility model reduces the amount of airflow entering the bottom of the carriage from this gap and reduces the aerodynamic resistance and energy consumption by providing an arc-shaped receiving groove that can conform to the shape of the towing wheel to minimize the matching gap between them.

[0037] Certainly, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above examples. Changes, modifications, additions, or substitutions made by those skilled in the art within the scope of the essence of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A trailer with low wind resistance side skirts, comprising a frame extending frontward and rearward, a carriage mounted above the frame, and rear wheel assemblies mounted on the left and right sides of the frame; characterized in that: A side skirt is fixedly installed on the left and right sides of the bottom of the frame respectively, and the side skirt is arranged along the front and rear direction of the frame. The top of the side skirt is fixedly connected to the bottom of the frame, and the bottom extends downward and has a certain safety distance from the ground, and the front end is provided with an arc-shaped accommodating groove.

2. The trailer with low wind resistance side skirts according to claim 1, characterized in that: The outer side surface of the side skirt plate is flush with the side surface of the carriage.

3. The trailer with low wind resistance side skirts according to claim 1, characterized in that: The bottom of the side skirt plate is provided with an arc surface bent toward the bottom direction of the frame.

4. The trailer with low wind resistance side skirts according to claim 2, characterized in that: A wheel groove is formed on the side skirt plate at a position corresponding to the rear wheel set, and the rear wheel set protrudes from the wheel groove.

5. The trailer with low wind resistance side skirts according to claim 4, characterized in that: A protective cover is fixed on the wheel groove in the circumferential direction of the rear wheel set, and the protective cover is arranged on the outer side of the rear wheel set, and the protective cover is used as a fender of the rear wheel set.

6. The trailer with low wind resistance side skirts according to claim 1, characterized in that: The side skirt plate comprises a plurality of side plate units which are spliced ​​to each other, and each side plate unit is fixed to the bottom of the vehicle frame.

7. The trailer with low wind resistance side skirts according to claim 6, characterized in that: A reinforcement bracket is fixed on the inner side surface of the side skirt plate.

8. The trailer with low wind resistance side skirts according to claim 7, characterized in that: Each of the side panel units is fixed to the vehicle frame via a plurality of mounting brackets.

9. The trailer with low wind resistance side skirts according to claim 1, characterized in that: The columns on both sides of the front end of the carriage are arranged as rounded structures, and the side walls of the carriage are planar structures.

10. The trailer with low wind resistance side skirts according to claim 1, characterized in that: A tail plate is installed at the rear of the carriage, and the tail plate has a smooth transition with the side skirt plate.

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