WO2019130191A1

WO2019130191A1 - Load-bearing vehicle body

Info

Publication number: WO2019130191A1
Application number: PCT/IB2018/060499
Authority: WO
Inventors: Олег Юрьевич КРОПП
Original assignee: Олег Юрьевич КРОПП
Priority date: 2017-12-27
Filing date: 2018-12-21
Publication date: 2019-07-04
Also published as: RU2670339C1

Abstract

The invention relates to automotive design, and more particularly to bodies for vehicles, preferably buggies. The aims of the invention are to increase the strength and to provide for the manufacturability of a vehicle body frame. The technical results achieved are: an increase in the strength of a vehicle body frame, and manufacturability of the frame. These aims are achieved in a load-bearing vehicle body having a tubular space frame structure comprising primary elements defining the shape and internal geometry of the body, and connecting elements for connecting same, in that the primary elements include two looped tubes, bending in the same plane, namely a right tube and a left tube, each having two longitudinal tubes which, in the assembled state, are situated in two non-parallel planes, and four planar structures in the form of L-shaped tubes, formed by a single bend, which are situated in two transverse planes of the body, and the connecting elements are elementary straight segments that connect the primary elements of the structure in a transverse direction.

Description

CARRIER BODY VEHICLE

The invention relates to the automotive industry and is intended for the body of the vehicle, mainly buggies, and provides increased driver safety in the event of a traffic accident.

Known body of the high security car for the patent of the Russian Federation for the invention N ° 2270778, MIC B62D23 / 00, publ. 02.22.2008

This car body contains a frame in the form of a tubular power spatial structure, a reinforced lining connected to it, made of an elastic material, a vitality capsule having a memory of the original shape, armored glasses rigidly fixed on it. The design of the frame is made with underrun protection, namely with rigid protrusions in front of the vitality capsule, covered with foamed aluminum under the cladding. The vitality capsule is made in the form of a tubular strength structure made of an alloy with a shape memory effect, chemical heaters are placed inside the cavities of the tubular strength structure of a vitality capsule. The upper surfaces of the engine and gearbox have a gently tapering shape. The bases of the seats have shock absorbers with shape memory, equipped with chemical-type heaters. The technical result is that the design allows you to restore the shape after the deformation of the body and reduce dangerous loads on people and goods by restoring the original form when using thermal energy from the exothermic reaction to heat the shape memory effect alloy.

Disadvantage: low strength of the car body.

Known body buggy for the patent of the Russian Federation for utility model N ° 187185, IPC G09B9 / 34, publ. 10.07.2006, the prototype.

This body consists of a bearing element - a tubular frame in the form a spatial farm with an open body, a seat, a power unit in the form of an engine block with a transmission, a steering mechanism, controls, a brake mechanism, a power supply battery, elastic suspension elements of two front and two rear wheels, characterized in that the frame is made with dimensions , determined by the requirements of ergonomics for the age group of students trained in the device and the skills of driving a car, the body is made of transparent material that allows the internal structure of the mini-buggy in statics and dynamics, and formed by a set of elements, the composition and shape of which are similar to a conventional car, equipped with a windshield, elements of light and sound alarm, and a spare wheel is fixed on the rear wall of the body.

Disadvantages:

- low manufacturability,

- insufficient strength of the body.

The tasks of the invention: increasing the strength of the vehicle body frame and ensuring its manufacturability.

Achieved technical results: increase the strength of the vehicle body frame and ensure its manufacturability.

The solution of these problems is achieved in the carrier body of a spatial tubular structure, containing the main elements defining the outlines and internal geometry of the frame and connecting elements connecting them, in that the main elements include two circularly curved pipes in the same plane, right and left. two longitudinal pipes each, which during assembly are placed in two non-parallel planes, and four flat structures, in the form of pipes “G” - shaped, made by the only bend, which are located in two transverse planes of the body, and the connecting elements are elementary straight segments connecting the main structural elements in from the transverse direction.

Elementary straight pipe sections can be made as connecting two looped curved pipes in one plane: the first upper transverse pipe, the first middle transverse pipe, the first lower transverse pipe, the second upper transverse pipe, the second middle transverse pipe, the second lower transverse pipe, the average transverse pipe pipe, front cross pipe, rear cross pipe.

Two circularly curved pipes in one plane can be located in two non-parallel planes at an angle a to the horizontal plane a = 5 ⁰

- 85 ⁰ Four flat power transverse structures can be made "G" - shaped by a single bend of the pipe at an angle to the horizontal plane b = 5 ° - 85 ⁰ . All pipes can be made of composite materials. All pipes can be made by 3D printing. All pipes can be made of steel. All pipes can be welded together. All pipes can be made of the same diameter. All basic structural elements can be made of pipes of a larger diameter than pipes of connecting elements.

The invention is illustrated in the drawings of FIG. 1 ... 15, where:

- in fig. 1 shows a buggy type car,

- in fig. 2 shows the bearing body, made according to the proposed concept,

- in fig. 3 shows the second projection of the same vehicle,

- in fig. 4 is a view of the body without trim in isometric,

- ha of FIG. 5 is a top view of the body of A, FIG. four,

- in fig. 6 is a view of the body in B (rear) in FIG. five,

- in fig. 7 shows a looped, bent in one plane pipe, - in fig. 8 shows a looped, bent in one plane pipe, type C, FIG. 7,

- Fig. 9 shows an assembly of pipes, which are bent in one plane and flat power transverse structures;

- in fig. 10 shows the type of assembly of circularly bent in one plane pipes;

- in fig. 11 shows the components of the basis of the flat power transverse structures G - shaped tubes, made by a single bend,

- in fig. 12 is a view D of FIG. eleven,

- in fig. 13 shows the elementary straight pipe segments connecting the main structural elements,

- in fig. 14 shows the joint of pipes,

- in fig. 15 shows a reinforced pipe joint.

The main difference of the proposed construction of the supporting spatial tubular frame (NPTP) of a vehicle (TS) is the location of its main elements in four intersecting planes.

Wherein:

1. The inner space is divided into three compartments: the front, defined by the front dimensions of the looped pipes, the plane of the location of the front "L" -shaped elements and the sections of the planes of the looped pipes located between them; the average, determined by the planes of the location of the front and rear "G" -shaped elements and their angle of inclination to the horizontal plane; the rear, defined by the rear dimensions of the looped pipes, the plane of the arrangement of the rear "L" -shaped elements and the sections of the planes of the looped pipes located between them. 2. The payload is located in the middle bay.

3. The engine and transmission can be located both in the front or rear, and in both compartments, depending on the requirements for the vehicle. When the engine and transmission are located in one of the compartments, the other can be used as an additional one to accommodate the payload. .

4. The proposed arrangement of the NTPR elements allows positioning the attachment points of the suspension parts, transmissions, controls directly on them, without the use of additional fastening devices, for example,

stretchers.

The list of essential features adopted in the description:

Left looped, bent in one plane pipe 1,

Right looped bent pipe 2,

Left front, flat power transverse structure 3, Right front, flat power transverse structure 4,

Left rear, flat power transverse design 5,

Right rear, flat power transverse design 6,

The first upper transverse tube 7,

The first middle transverse tube 8, the first lower transverse tube 9,

Second upper transverse tube 10,

Second middle transverse tube 11,

The second lower transverse tube 12, Left middle longitudinal tube 13,

Left bottom longitudinal tube 14,

Right middle longitudinal tube 15,

Lower right longitudinal pipe 16, Middle transverse pipe 17,

Front cross tube 18,

Rear cross tube 19,

Front facing 20,

Rear facing 21, Floor 22.

Corner pipe connection 23,

Reinforced corner joint of pipes 24.

Consider the use of the described technology on the example of a pleasure car of the buggy type (Fig. 1). The most commonly used body on the basis of NPTR in the civil and military industries. For clarity, remove the elements of the suspension, engine and transmission.

FIG. 2 and 3 shows the carrier spatial tube frame - NPTR, which forms the supporting body and is made according to the proposed concept; FIG. 4 - the same frame without facing. Carrying spatial tubular frame - NPTP (Fig. 4) consists of:

- the main force elements that define the shape and internal geometry of the frame, - transverse pipes, made in the form of straight segments and connecting the main force elements.

The main power elements include two looped, left-curved pipes 1 and right 2 and four flat power transverse structures 3 - 6, namely:

Left front, flat power transverse design 3,

Right front, flat power transverse design 4,

Left rear, flat power transverse design 5,

Right rear, flat power transverse design 6.

At the same time, the main elements are two circularly bent pipes in the same plane of the left 1 and right 2 (Fig. 4), when assembled, they are arranged in two non-parallel planes and at an angle a to the horizontal plane (Figs. 7-8).

The optimal angle is a = 5 ⁰ - 85 ⁰ .

The composition of the main force elements (Fig. 9, 11 and 12), in addition, includes four flat force transverse structures 3 - 6, made "G" -shaped by a single bend of the pipe, they form two non-parallel planes, made at an angle b to the horizontal plane (Fig. 7).

The optimal angle is b = 5 - 85 ⁰ .

Ringed bent in one plane pipes 1 and 2 are each reinforced with two longitudinal pipes on the left side 13 and 14 and on the right side - 15 and 16 (FIG.

four)·

The remaining NPTR elements (Fig. 13) are elementary straight pipe segments connecting the main structural elements including: the first upper transverse pipe 7, the first middle transverse tube 8, the first lower transverse tube 9, the second upper transverse tube 10, the second middle transverse tube 11, the second lower transverse tube 12, the middle transverse tube 17, the front transverse tube 18, the rear transverse tube 19.

The vehicle body will enclose a spatial tubular frame (FIGS. 1 and 2), which, in turn, contains a pipe 1, left circularly, bent in one plane and pipe 2, bent in one plane symmetrically along the vehicle axis (FIG. 2. .4).

All elements of the vehicle frame can be made of metal. Perhaps the use of carbon or alloyed steels. Welding - or electron-arc or gas welding. FIG. 14 and 15 show, respectively, a welded joint 23 and a reinforced welded joint 24.

Performance of all details from composite materials is possible. In this case, 3D printing is possible. ASSEMBLY OF SPATIAL TUBULAR FRAME

When assembling the body of the vehicle (Fig. 1 ... 15) make the carrier spatial tube frame - NPTR for the individual components:

Two looped pipes 1 and 2 curved in the same plane are made (Figs. 7 and 8). When assembled, they are arranged in two non-parallel planes and at an angle a to the horizontal plane.

The optimal angle is a = 5 ⁰ - 85 ⁰ .

Looped curved in one plane pipes 1 and 2 are reinforced each in the middle part by two longitudinal pipes 13 and 14 for the left 1 and 15 and 16 for the right 2 (Fig. 4).

Four flat power transverse structures 3 ... 6 are made, the basis of which consists of pipes "G" - shaped, made by a single bend (Fig. 5) and form two non-parallel planes, made at an angle b to the horizontal plane (Fig. 11 and 12). The optimum angle is b - 5 - 85 ⁰ .

Two flat power transverse structures 3, 4 and 5, 6, respectively, are welded to annularly curved in one plane pipes 1 and 2.

Then weld the first upper cross pipe 7, the first middle cross pipe 8, the first lower cross pipe 9, the second upper cross pipe 10, the second middle cross pipe 11, the second lower cross pipe 12, the left middle longitudinal pipe 13, the middle cross pipe 17 , front cross tube 18, rear cross tube 19.

Work body during operation. Yu

During the operation of the vehicle, the main task of the body is to minimize its deformation both in frontal and side impact and when the vehicle is turned over.

Frontal shocks perceive looped pipes 1 and 2 curved in one plane. Side impacts perceive flat power transverse structures 3 - 6 and longitudinal pipes: left middle longitudinal pipe 13, left lower longitudinal pipe 14, right middle longitudinal pipe 15, right lower longitudinal pipe 16.

Lateral impacts are also perceived: the first upper transverse tube 7, the first middle transverse tube 8, the first lower transverse tube 9, the second upper transverse tube 10, the second middle transverse tube 11, the second lower transverse tube 12, the middle transverse tube 17, the front transverse tube 18 , rear transverse tube 19 (Fig. 2).

In the case of the use of composite materials for the manufacture of a body, 3D printing is used and the body manufacturing process is significantly accelerated and high-volume body production is possible.

This concept, in comparison with traditional ones (the number of planes is 10 and more), has three main advantages:

1. A radical simplification of the production process. All NPTP parts are performed by bending the pipe in a single plane. And only two of them have more than one bend, four - one bend each, and the rest are elementary sections of a straight pipe. This, and the reduction in the total number of parts required for the production of NPTR (up to 15 or less), makes it possible to use an elementary structure for the assembly of the stocks, and even abandon them altogether.

2. Significant increase in the strength and stiffness of NPTR due to the principal reduction in the number of parts connecting nodes. This allows you to improve the safety and level of performance of the vehicle. 3. A significant reduction in vehicle mass due to the reduction in the total number of parts, as well as the fulfillment by one element of the structure of the functions of several elements. This allows you to improve the economy, sustainability and driving performance of the vehicle.

Claims

Claim

1. Bearing body of the vehicle, spatial tubular structure, containing the main elements defining the outlines and internal geometry of the frame, and connecting elements connecting them, characterized in that the main elements include two circularly curved pipes in the same plane, right and left two longitudinal pipes, which, when assembled, are arranged in two non-parallel planes and four flat structures, in the form of pipes “G” - of a figurative shape, made by a single bend, which olagayutsya in two transverse planes of the body, and the connecting elements are elementary straight line segments connecting the main structural elements in the transverse direction.

2. Bearing body of a vehicle according to claim 1, characterized in that the elementary straight pipe segments are made in the form of connecting two looped pipes bent in one plane: the first upper transverse pipe, the first middle transverse pipe, the first lower transverse pipe, the second upper transverse pipe , second middle transverse tube, second lower transverse tube, middle transverse tube, front transverse tube, rear transverse tube.

3. Bearing body of a vehicle according to claim 1 or 2, characterized in that the two circularly curved pipes in the same plane are located in two non-parallel planes at an angle a to the horizontal plane a = 5 ⁰ - 85 °.

4. Bearing body of the vehicle according to claim 1 or 2, characterized in that the four flat power transverse structures are made of "T" - shaped by a single bend of the pipe at an angle to the horizontal plane b = 5 ° - 85 °.

5. Bearing body of a vehicle under item 1 or 2, characterized in that all the pipes are made of composite materials.

6. Bearing body of a vehicle according to claim 5, characterized in that all the pipes are made by 3D printing.

7. Bearing body of a vehicle under item 1 or 2, characterized in that all the pipes are made of steel.

8. Bearing body of a vehicle according to and. 7, characterized in that all pipes are connected by welding.

9. Bearing body of a vehicle according to and. 1 or 2, characterized in that all the pipes are made of the same diameter.

10. Bearing body of a vehicle according to and. 1 or 2, characterized in that all the main structural elements are made of pipes of a larger diameter than the pipes of connecting elements.