Front lower protection device for heavy dump truck

Abstract

The utility model discloses a front lower protection device for a heavy dumper, which comprises a left transition support, a right transition support, a left connecting support, a right connecting support, a lower protection cross beam, a right connecting plate and a left connecting plate. The left connecting bracket and the right connecting bracket are symmetrically welded on the left connecting plate and the right connecting plate respectively to jointly form a front lower protection device lower end welding assembly; and the left transition bracket and the right transition bracket are respectively connected with the left connecting bracket and the right connecting bracket through bolts. The utility model has the advantage of light weight while meeting the strength requirement; the transition support is of a cast structure, other installation structures are easy to integrate, and the torsional rigidity of the whole vehicle is improved. The garment is attractive in appearance.

Description

Technical Field

[0001] The utility model relates to a front lower protection device for a heavy dump truck, belonging to the technical field of automobile parts. Background Art

[0002] The function of the front lower guard of commercial vehicles is to prevent small vehicles from being rolled into the lower part of the longitudinal beam of the commercial vehicle when a head-on collision occurs between the small vehicles and the commercial vehicle. The existing front lower guard of heavy-duty dump trucks generally adopts a rectangular cross-section lower guard beam, which has a larger mass at the same strength, which is not conducive to the lightweight and fuel economy of the whole vehicle; the connecting parts with the frame end are generally stamped parts, which are relatively difficult to integrate with other connecting structures, and the improvement of the torsional rigidity of the whole vehicle is not obvious. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a front lower protection device for a heavy-duty dump truck in view of the defects in the prior art, so as to reduce the weight of the vehicle and improve the torsional rigidity of the whole vehicle.

[0004] To solve this technical problem, the utility model provides a front lower protection device for a heavy-duty dump truck, comprising a left transition bracket, a right transition bracket, a left connecting bracket, a right connecting bracket, a lower protection beam, a right connecting plate and a left connecting plate, wherein a left connecting plate and a right connecting plate are symmetrically welded to the upper part of the lower protection beam, and the left connecting bracket and the right connecting bracket are symmetrically welded to the left connecting plate and the right connecting plate respectively, to together constitute a welding assembly at the lower end of the front lower protection device; the left transition bracket and the right transition bracket are respectively connected to the left connecting bracket and the right connecting bracket by bolts.

[0005] The left transition bracket and the right transition bracket are of symmetrical structure and are integrally cast; two frame additional bracket transverse mounting holes and three frame additional bracket longitudinal mounting holes are provided at the upper end for connecting with the frame additional bracket, a cooling module mounting hole with internal threads is integrated in the middle for installing the cooling module, and three connecting bracket transverse mounting holes are provided at the lower end for connecting with the left connecting bracket bolts.

[0006] The lower protective cross beam is a tubular structure with a Japanese-shaped cross section, and is formed by integrally stamping a plate.

[0007] The cross section of the lower protective beam is square or rectangular.

[0008] The left transition bracket and the left connecting bracket, and the right transition bracket and the right connecting bracket are respectively integrated into a stamping bracket.

[0009] The left connecting bracket, the right connecting bracket, the right connecting plate and the left connecting plate are made by stamping plates.

[0010] The front lower protection device is connected to the left frame additional bracket and the right frame additional bracket by bolts through the left transition bracket and the right transition bracket; the mounting point at the bottom of the cooling module is connected to the transition bracket by bolts through the cooling module mounting hole.

[0011] Beneficial effects: The utility model meets the requirements of strength and light weight at the same time; the transition bracket adopts a casting structure, which is easy to integrate with other installation structures, which is beneficial to improving the torsional rigidity of the whole vehicle; the utility model has beautiful appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the left transition bracket of the utility model;

[0014] Figure 3 It is a cross-sectional schematic diagram of the lower protective beam of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the lower end welding assembly of the front lower protection device of the utility model;

[0016] Figure 5 This is a schematic diagram of the installation position of the utility model.

[0017] In the figure: 1. Left transition bracket; 2. Right transition bracket; 3. Left connecting bracket; 4. Right connecting bracket; 5. Lower protective crossbeam; 6. Right connecting plate; 7. Left connecting plate; 8. Horizontal mounting hole of the additional frame bracket; 9. Longitudinal mounting hole of the additional frame bracket; 10. Mounting hole of cooling module; 11. Horizontal mounting hole of connecting bracket; 12. Left frame additional bracket; 13. Right frame additional bracket; 14. Cooling module; 15. Welding assembly of the lower end of the front lower protective device. DETAILED DESCRIPTION

[0018] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] like Figure 1-Figure 5 As shown, the utility model provides a front lower protection device for a heavy-duty dump truck, including a left transition bracket 1, a right transition bracket 2, a left connecting bracket 3, a right connecting bracket 4, a lower protection beam 5, a right connecting plate 6 and a left connecting plate 7, the upper part of the lower protection beam 5 is symmetrically welded with a left connecting plate 7 and a right connecting plate 6, the left connecting bracket 3 and the right connecting bracket 4 are symmetrically welded to the left connecting plate 7 and the right connecting plate 6 respectively, and together constitute a lower end welding assembly 15 of the front lower protection device, which is produced as an assembly during manufacturing; the left transition bracket 1 and the right transition bracket 2 are respectively connected to the left connecting bracket 3 and the right connecting bracket 4 by bolts.

[0020] The left transition bracket 1 and the right transition bracket 2 are of symmetrical structure and integrally cast. The advantage of using a cast transition bracket is that it is integrally formed, and important installation dimensions are easy to ensure when installed on the frame auxiliary bracket; two frame auxiliary bracket transverse mounting holes 8 and three frame auxiliary bracket longitudinal mounting holes 9 are provided at the upper end for connection with the frame auxiliary bracket, and a cooling module mounting hole 10 with an internal thread is integrated in the middle for installation of a cooling module 14; three connecting bracket transverse mounting holes 11 are provided at the lower end for bolt connection with the left connecting bracket.

[0021] The lower protective beam 5 is a tubular structure with a Japanese-shaped cross section, and is formed by integrally stamping a plate. While meeting the strength requirements, the overall lightweight is improved. Compared with a cold-drawn beam, it has higher strength and lighter weight.

[0022] The cross section of the lower protective beam 5 may also be square, rectangular or other cross-sectional forms.

[0023] The left transition bracket 1 and the left connecting bracket 3, the right transition bracket 2 and the right connecting bracket 4 are respectively integrated into a stamping bracket.

[0024] The left connecting bracket 3, the right connecting bracket 4, the right connecting plate 6 and the left connecting plate 7 are made by stamping plates.

[0025] The front lower protection device is connected to the left frame additional bracket 12 and the right frame additional bracket 13 by bolts through the left transition bracket 1 and the right transition bracket 2. The left transition bracket 1 and the right transition bracket 2 play an intermediate transition role, which helps to improve the torsional rigidity of the whole vehicle; the left transition bracket 1 and the right transition bracket 2 are integrated with the cooling module mounting hole 10, and the mounting point at the bottom of the cooling module 14 is connected to the transition bracket by bolts through the cooling module mounting hole 10; this part can also be integrated with other mounting structures according to actual applications in the later stage.

[0026] The left and right transition brackets of the utility model adopt a casting structure and are connected to the left and right frame additional brackets, thereby increasing the torsional rigidity of the entire vehicle; at the same time, it is convenient to integrate other mounting holes, and important assembly dimensions are easy to ensure; the left and right connecting brackets, the left and right connecting plates, and the lower protective cross beam adopt a plate stamping structure, which meets the strength requirements while having the advantage of being lightweight.

[0027] The utility model has left and right transition brackets at the uppermost end; the left and right transition brackets are respectively connected to the left and right connecting brackets with bolts; the left and right connecting brackets are welded to the left and right connecting plates, connecting the left and right transition brackets and the left and right connecting plates; the left and right connecting plates are welded to the lower protective cross beam, connecting the left and right connecting brackets and the lower protective cross beam; the lower protective cross beam adopts a Japanese-shaped cross section, which is stamped and formed in one piece, ensuring the overall strength while taking into account the advantages of lightweight; the upper end adopts a transition bracket of a casting structure, and the important installation dimensions are easy to ensure, which is beneficial to improving the torsional rigidity of the whole vehicle and has a beautiful appearance; the middle and lower ends adopt a stamping structure, so that the product meets the strength requirements while being more lightweight.

[0028] The above embodiments of the present invention are merely illustrative and not exclusive, and all modifications within the scope of the present invention or equivalent to the scope of the present invention are encompassed by the present invention.

Claims

1. A front lower protection device for a heavy-duty dump truck, characterized in that: The invention comprises a left transition bracket (1), a right transition bracket (2), a left connecting bracket (3), a right connecting bracket (4), a lower protective cross beam (5), a right connecting plate (6) and a left connecting plate (7); a left connecting plate (7) and a right connecting plate (6) are symmetrically welded to the upper part of the lower protective cross beam (5); the left connecting bracket (3) and the right connecting bracket (4) are symmetrically welded to the left connecting plate (7) and the right connecting plate (6) respectively, and together form a lower end welding assembly (15) of the front lower protective device; the left transition bracket (1) and the right transition bracket (2) are respectively connected to the left connecting bracket (3) and the right connecting bracket (4) by bolts.

2. The front lower protection device for a heavy-duty dump truck according to claim 1 is characterized in that: The left transition bracket (1) and the right transition bracket (2) are symmetrical structures and are integrally cast; two frame auxiliary bracket transverse mounting holes (8) and three frame auxiliary bracket longitudinal mounting holes (9) are provided at the upper end thereof for connection with the frame auxiliary bracket; a cooling module mounting hole (10) with an internal thread is integrated in the middle thereof for mounting a cooling module (14); and three connecting bracket transverse mounting holes (11) are provided at the lower end thereof for bolt connection with the left connecting bracket.

3. The front lower protection device for a heavy-duty dump truck according to claim 1 is characterized in that: The lower protective cross beam (5) is a tubular structure with a Japanese-shaped cross section, and is formed by integrally stamping a plate.

4. The front lower protection device for a heavy-duty dump truck according to claim 1 is characterized in that: The cross section of the lower protective beam (5) is square or rectangular.

5. The front lower protection device for a heavy-duty dump truck according to claim 1 is characterized in that: The left transition bracket (1) and the left connecting bracket (3), and the right transition bracket (2) and the right connecting bracket (4) are respectively integrated into a stamping bracket.

6. The front lower protection device for a heavy-duty dump truck according to claim 1 is characterized in that: The left connecting bracket (3), the right connecting bracket (4), the right connecting plate (6) and the left connecting plate (7) are made by stamping plates.

7. The front lower protection device for a heavy-duty dump truck according to any one of claims 1 to 6, characterized in that: The front lower protection device is connected to the left frame additional bracket (12) and the right frame additional bracket (13) by bolts through the left transition bracket (1) and the right transition bracket (2); the mounting point at the bottom of the cooling module (14) is connected to the transition bracket by bolts through the cooling module mounting hole (10).

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