CN217532990U - A large transport tractor frame assembly - Google Patents

Abstract

The utility model discloses a large piece transportation tractor frame assembly, including left longeron, right longeron, deformation zone crossbeam, casting crossbeam, arcuation large-span connecting plate, deformation zone crossbeam upper junction plate, casting crossbeam upper junction plate, U type crossbeam upper junction plate, the wide breadth reinforcing plate of L type, saddle backup pad and tail beam, frame assembly is narrow ladder deformation cross-section structure behind the front width, and left longeron and right longeron symmetrical arrangement, through deformation zone crossbeam upper junction plate, casting crossbeam upper junction plate, arcuation large-span connecting plate and deformation zone crossbeam, casting crossbeam link as an organic whole; the U-shaped cross beam upper connecting plate and the saddle supporting plate are connected with the left longitudinal beam and the right longitudinal beam through bolts, and the outer side of the saddle supporting plate is connected with the saddle connecting plate; the inner side of the longitudinal beam at the front end of the frame assembly is provided with a reinforcing plate and a lower reinforcing plate, and the rear end of the longitudinal beam is provided with a tail beam. The utility model provides high whole bending resistance of frame turning round nature and rigidity have reduced local deformation and fracture, reduce whole car height, promote whole car and operate the stability.

Description

A large transport tractor frame assembly

technical field

The utility model relates to a frame assembly of a large transport tractor, which relates to the technical field of a tractor frame.

Background technique

The bulk transport tractor mainly transports non-removable bulk cargo, the cargo weighs hundreds of tons, and has extremely high requirements on the vehicle's carrying capacity and bending and torsion conditions. At present, the mainstream frame for transporting bulky goods is generally in the form of double-layer longitudinal beams and sub-frames. This structural form has a high center of mass and many parts, and is not versatile with ordinary tractors. Therefore, it is necessary to design a frame assembly that takes into account light weight and versatility, and meets the large load and bending torsion conditions of large vehicles.

SUMMARY OF THE INVENTION

The technical problem to be solved by the utility model is aimed at the defects of the prior art, and provides a frame assembly of a large transport tractor, which can reduce the height of the whole vehicle and improve the handling stability of the whole vehicle.

In order to solve this technical problem, the utility model provides a frame assembly of a large transport tractor, including a left longitudinal beam, a right longitudinal beam, a deformation zone beam, a casting beam, an arc-shaped large-span connecting plate, and a deformation zone beam. The upper connecting plate, the upper connecting plate of the cast beam, the upper connecting plate of the U-shaped beam, the L-shaped wide-width reinforcement plate, the saddle support plate and the tail beam, the frame is always a trapezoidal variable-section structure with a wide front and a narrow rear. The longitudinal beam and the right longitudinal beam are symmetrically arranged, and the upper connecting plate of the beam in the deformation area, the upper connecting plate of the casting beam, the arc-shaped large-span connecting plate, the beam and the casting beam in the deformation area are connected by bolts and rivets. The connecting plate and the saddle support plate are connected with the left longitudinal beam and the right longitudinal beam by bolts, and the outer side of the saddle support plate is connected with the saddle connecting plate; the inner side of the longitudinal beam at the front end of the frame assembly is provided with a reinforcing plate and a lower reinforcing plate, and the rear Mount the tail boom at the end.

The reinforcing plate and the lower reinforcing plate increase the width of the ventral surface at the engine suspension installation place, and are locally reinforced.

The L-shaped wide-width reinforcing plate includes a left L-shaped wide-width reinforcing plate and a right L-shaped wide-width reinforcing plate, which extend from the front leaf spring rear bracket to the front of the casting beam and cross the frame deformation area.

The saddle support plate includes a left saddle support plate and a right saddle support plate, which are connected by groove-shaped beams; The side of the connecting plate is provided with welding nuts; the number of the channel beams is two or three.

The upper connecting plate of the U-shaped beam includes the upper connecting plate of the left U-shaped beam and the upper connecting plate of the right U-shaped beam, adopts a streamlined arc structure, and is installed in the main bearing range of the saddle.

The upper connecting plate of the beam in the deformation area includes the upper left connecting plate of the beam in the deformation area and the upper right connecting plate of the beam in the deformation area, which adopts a streamlined arc structure and is installed in the deformation area of the frame.

The beams in the deformation zone are installed back-to-back with two identical trough beams, a plurality of weight-reducing holes and component mounting holes are arranged on the ventral surface, and the upper and lower wing surfaces adopt an arc-shaped structure.

The saddle connecting plate includes a left saddle connecting plate and a right saddle connecting plate, and a plurality of groups of oblong holes are designed on the upper wing surface of the saddle connecting plate.

The arc-shaped large-span connecting plate includes a left arc-shaped large-span connecting plate and a right arc-shaped large-span connecting plate. The weight-reducing hole at the place; the arc-shaped large-span connecting plate extends from the installation place of the gearbox to the tail beam. The arc-shaped large-span connecting plate is matched with the frame longitudinal beam before and after bending, and the horizontal bending angle in the longitudinal direction of the frame is 4.5°, and an oblong crack relief groove is provided.

The left longitudinal beam and the right longitudinal beam are single-layer trough-shaped structures, with standard mounting holes with a spacing of 50mm or multiples of them distributed symmetrically up and down on the Y-shaped side surface and the ventral surface.

Beneficial effects: the utility model reduces the weight of the frame assembly, improves the bending torsion resistance, overall rigidity and handling stability of the frame as a whole, reduces the local deformation and cracking of the frame, and improves the standardization and versatility of the frame. In the utility model, single-layer left and right longitudinal beams are used to reduce the number of parts. The arc-shaped large-span connecting plate and the beam in the deformation area are designed with weight-reducing holes to effectively reduce the weight of the frame assembly; the arc-shaped large-span connecting plate, L-shaped The wide-width reinforcing plate, the connecting plate on the U-shaped beam, and the beam in the deformation area are designed in a streamlined arc shape to avoid stress concentration, and the connecting plate increases the area of the web surface and disperses the stress; the web surface of the left and right longitudinal beams are designed with standard mounting holes, saddle Multiple groups of oblong holes are designed on the wing surface of the connecting plate to improve the standardization and versatility of the frame assembly; the variable section design of the frame assembly with a wide front and a narrow rear reduces the height of the whole vehicle and improves the handling stability of the whole vehicle. It can meet the working conditions of low speed, heavy load and bending and torsion resistance of large tractor.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Figure 2 is a schematic diagram of the connection between the arc-shaped large-span connecting plate and the beam in the deformation zone of the present invention;

3 is a schematic diagram of the connection between the upper connecting plate of the U-shaped beam and the saddle support plate of the present invention;

In the picture: 1. Left longitudinal beam; 2. Right longitudinal beam; 3. Lower reinforcement plate; 4. Reinforcing plate; 5. L-shaped wide-width reinforcement plate; 6. Saddle support plate; Plate; 8. Deformation zone beam; 9. Saddle connecting plate; 10. Arc-shaped large-span connecting plate; 11. Casting beam; 12. Connecting plate on U-shaped beam; 13. Channel beam; 14. Connecting on casting beam plate; 15, tail beam; 1001, left arc-shaped large-span connecting plate; 1002, right arc-shaped large-span connecting plate.

Detailed ways

The present utility model will be described in detail below with reference to the accompanying drawings and embodiments.

As shown in Fig. 1-Fig. 3, the utility model provides a frame assembly of a large transport tractor, including a left longitudinal beam 1, a right longitudinal beam 2, a deformation zone beam 8, a casting beam 11, an arc-shaped large span The connecting plate 10, the upper connecting plate 7 of the deformation zone beam, the upper connecting plate 14 of the casting beam, the upper connecting plate 12 of the U-shaped beam, the L-shaped wide-width reinforcement plate 5, the saddle support plate 6 and the tail beam 15, the frame It is generally a trapezoidal variable-section structure with a wide front and a narrow rear. The left longitudinal beam 1 and the right longitudinal beam 2 are symmetrically arranged, passing through the upper connecting plate 7 of the beam in the deformation zone, the upper connecting plate 14 of the cast beam, the arc-shaped large-span connecting plate 10 and the deformation zone. The beam 8 and the cast beam 11 are connected together by bolts and rivets; the connecting plate 12 on the U-shaped beam and the saddle support plate 6 are connected with the left longitudinal beam 1 and the right longitudinal beam 2 by bolts for installing the saddle; The outer side of the seat support plate 6 is connected to the saddle connection plate 9; the inner side of the front longitudinal beam of the frame assembly is provided with a reinforcing plate 4 and a lower reinforcing plate 3, and the rear end of the frame assembly is installed with a tail beam 15; the connection form can be bolts or Rivets and other methods are used to ensure the reasonable arrangement and installation reliability and firmness of vehicle components.

The reinforcing plate 4 and the lower reinforcing plate 3 increase the width of the belly surface at the installation of the engine suspension, and strengthen it locally.

The L-shaped wide-width reinforcing plate 5 includes a left L-shaped wide-width reinforcing plate and a right L-shaped wide-width reinforcing plate, extending from the front leaf spring rear bracket to the front of the casting beam, across the frame deformation area, and has a certain fold. The bending angle can weaken the cracking of the upper wing surface of the frame longitudinal beam and increase the torsional strength of the frame.

The saddle support plate 6 includes a left saddle support plate and a right saddle support plate, which are connected by a trough beam 13, the trough beam 13 is a welded structure, and the number of beams is determined by the wheelbase; the trough beam 13 is welded by the arc L-shaped connecting plate at both ends and the middle groove plate. The side of the arc L-shaped connecting plate is provided with welding nuts, which is convenient for installation and operation; the number of the 13 groove beams is two or three groups; this design The key point is to strengthen the position of the stress point of the saddle, which not only increases the strength of the frame assembly, but also meets the needs of semi-trailers of different tonnages.

The U-shaped beam upper connecting plate 12 includes a left U-shaped beam upper connecting plate and a right U-shaped beam upper connecting plate, adopts a streamlined arc structure, and is installed within the main bearing range of the saddle to enhance the strength of the saddle support plate.

The upper connecting plate 7 of the beam in the deformation area includes the upper left connecting plate of the beam in the deformation area and the upper right connecting plate of the beam in the deformation area. It adopts a streamlined arc structure and is installed in the deformation area of the frame to reduce stress concentration and avoid cracking of the upper wing surface of the frame.

The deformation zone beam 8 adopts two identical groove beams to be installed back-to-back, the ventral surface is provided with a plurality of weight reduction holes and parts installation holes, and the upper and lower airfoils adopt an arc-shaped structure to reduce the damage to the frame caused by the vibration of the engine and gearbox. Reduce stress concentration.

The saddle connecting plate 9 includes a left saddle connecting plate and a right saddle connecting plate, and the upper wing surface is designed with multiple groups of oblong holes, which can flexibly move the saddle position to meet the needs of semi-trailers of different tonnages.

The arc-shaped large-span connecting plate 10 connects the cross beam and the longitudinal beam, including a left arc-shaped large-span connecting plate 1001 and a right arc-shaped large-span connecting plate 1002, the left arc-shaped large-span connecting plate 1001 and the right arc-shaped large-span connecting plate 1001 The connecting plate 1002 adopts a streamlined arc-shaped structure and is provided with multiple weight-reducing holes. After the transfer case is installed and in the middle of the middle and rear axles, the width of the bottom width is increased to disperse the stress concentration; the arc-shaped large-span connecting plate 10 is installed from the gearbox. It extends all the way to the tail beam 15, which effectively increases the stiffness and torsional strength of the frame, reduces the types of connecting plates and the weight of the frame assembly; The frame is horizontally bent in the longitudinal direction, with an angle of 4.5°, and an oblong crack relief groove is provided to achieve the effect of not only reducing the weight of the sheet parts but also making the beam assembly in the deformation zone fit the deformation zone of the frame.

The left longitudinal beam 1 and the right longitudinal beam 2 are single-layer trough-shaped structures with Y-shaped sides, which meet the layout of the whole vehicle; standard mounting holes with a spacing of 50mm or multiples are symmetrically distributed up and down on the ventral surface to meet their versatility.

The utility model adopts a streamlined arc-shaped design to avoid stress concentration, increase the area of the web of the connecting plate, disperse the stress, and improve the strength and bending and torsion resistance of the frame; the single-layer left and right longitudinal beams and local reinforcement design reduce the weight of the frame assembly and reduce the The height of the center of gravity of the whole vehicle improves the handling stability of the whole vehicle and meets the requirements of the lightweight of the whole vehicle, especially the working conditions of large-sized tractors running at low speed, large bearing capacity, and bending and torsion resistance.

The above-mentioned embodiments of the present utility model are merely illustrative, not exclusive, and all changes within the scope of the present utility model or within the scope equivalent to the present utility model are encompassed by the present utility model.

Claims (10)

1. A frame assembly for a large transport tractor, characterized in that it comprises a left longitudinal beam (1), a right longitudinal beam (2), a deformation zone beam (8), a casting beam (11), an arc-shaped large span Connecting plate (10), connecting plate (7) on the beam in the deformation zone, connecting plate (14) on the casting beam, connecting plate (12) on the U-shaped beam, L-shaped wide-width reinforcement plate (5), saddle support plate (6) and the tail beam (15), the frame is generally a trapezoidal variable-section structure with a wide front and a narrow rear. The left longitudinal beam (1) and the right longitudinal beam (2) are symmetrically arranged and pass through the upper connecting plate ( 7) The upper connecting plate (14) of the cast beam, the arc-shaped large-span connecting plate (10), the beam (8) and the cast beam (11) in the deformation zone are connected together by bolts and rivets; the connecting plate on the U-shaped beam (12), the saddle support plate (6) is connected to the left longitudinal beam (1) and the right longitudinal beam (2) by bolts, and the outer side of the saddle support plate (6) is connected to the saddle connecting plate (9); the frame A reinforcing plate (4) and a lower reinforcing plate (3) are arranged on the inner side of the longitudinal beam at the front end of the assembly, and a tail beam (15) is installed at the rear end thereof. 2 . The frame assembly of a large transport tractor according to claim 1 , wherein the reinforcing plate ( 4 ) and the lower reinforcing plate ( 3 ) increase the width of the belly surface at the engine suspension installation location, and locally strengthen it. 3 . 3 . The frame assembly of a large transport tractor according to claim 1 , wherein the L-shaped wide-width reinforcing plate ( 5 ) comprises a left L-shaped wide-width reinforcing plate and a right L-shaped wide-width reinforcing plate. 4 . The face reinforcement plate extends from the front leaf spring rear bracket to the front of the cast cross member, across the frame deformation area. 4. The frame assembly of a large transport tractor according to claim 1, characterized in that: the saddle support plate (6) comprises a left saddle support plate and a right saddle support plate. 13) Connection; the trough beam (13) is welded by the arc L-shaped connecting plate at both ends and the middle trough plate, and the arc L-shaped connecting plate has welding nuts on the side; the number of the trough beam (13) in two or three groups. 5. The frame assembly of a large transport tractor according to claim 1, characterized in that: the U-shaped beam upper connecting plate (12) comprises a left U-shaped beam upper connecting plate and a right U-shaped beam upper connecting plate , adopts a streamlined arc structure, and is installed in the main bearing range of the saddle. 6 . The frame assembly of a large transport tractor according to claim 1 , wherein the upper connecting plate (7) of the beam in the deformation zone comprises the upper left connecting plate of the beam in the deformation zone and the upper right connecting plate of the beam in the deformation zone. 7 . The streamlined arc structure is installed in the deformation area of the frame. 7 . The frame assembly of a large transport tractor according to claim 1 , wherein the deformation zone beams ( 8 ) are installed back-to-back using two identical trough beams, and a plurality of weight-reducing holes are provided on the ventral surface. 8 . And the mounting holes of the whole vehicle parts, the upper and lower wing surfaces adopt an arc structure. 8. The frame assembly of a large transport tractor according to claim 1, characterized in that: the saddle connecting plate (9) comprises a left saddle connecting plate and a right saddle connecting plate, and the upper wing surface is designed Multiple groups of oblong holes. 9. The frame assembly of a large transport tractor according to claim 1, wherein the arc-shaped large-span connecting plate (10) comprises a left arc-shaped large-span connecting plate (1001) and a right arc-shaped large-span connecting plate (1001) The distance connecting plate (1002), the left arc-shaped large-span connecting plate (1001) and the right arc-shaped large-span connecting plate (1002) adopt a streamlined arc-shaped structure and are provided with multiple weight-reducing holes; the arc-shaped large-span connecting plate (1002) The plate (10) extends from the installation of the gearbox to the tail beam (15), and the arc-shaped large-span connecting plate (10) matches the longitudinal beam of the frame before and after bending, and the horizontal bending angle is carried out in the longitudinal direction of the frame It is 4.5° and has an oblong crack relief groove. 10. The frame assembly of a large transport tractor according to any one of claims 1-9, characterized in that: the left longitudinal beam (1) and the right longitudinal beam (2) are a single-layer trough structure, On the Y-shaped side, there are standard mounting holes with a spacing of 50mm or multiples symmetrically distributed up and down on the ventral surface.

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