CN219295510U

CN219295510U - Rigid-flexible frame

Info

Publication number: CN219295510U
Application number: CN202223497677.XU
Authority: CN
Inventors: 王飞; 岳喜凯; 于红娟; 周士兵; 李鑫; 陈增合; 马文涛
Original assignee: China National Heavy Duty Truck Group Ji'nan Special Vehicle Co ltd
Current assignee: China National Heavy Duty Truck Group Ji'nan Special Vehicle Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-07-04
Anticipated expiration: 2032-12-28

Abstract

The utility model relates to the technical field of frames, in particular to a rigid and flexible frame which comprises a bumper and a main frame, wherein the main frame comprises a left longitudinal beam, a right longitudinal beam and a plurality of cross beams, the left longitudinal beam and the right longitudinal beam are symmetrically arranged left and right, the bumper is rigidly connected to the front ends of the left longitudinal beam and the right longitudinal beam, the cross beams comprise a thrust rod cross beam, 1-3 groups of riveting cross beams I and riveting cross beams II which are sequentially arranged front and back, an upper reinforcing cross beam is arranged above the thrust rod cross beam, the thrust rod cross beam and the upper reinforcing cross beam are rigidly connected with the left longitudinal beam and the right longitudinal beam, and the riveting cross beam I and the riveting cross beam II are flexibly connected with the left longitudinal beam and the right longitudinal beam. The riveting beam structure is adopted under the premise of ensuring the rigidity of the frame, so that the frame has certain flexible deformation capacity, and the local structural strength of the engineering vehicle and the overall stability of the vehicle are ensured.

Description

Rigid-flexible frame

Technical Field

The utility model relates to the technical field of frames, in particular to a rigid and flexible frame.

Background

Existing frames are generally divided into rigid frames and flexible frames. The rigid frame adopts an integral welding method, because the frame must have certain torsion resistance and bending resistance, the cross beam adopts a rectangular beam, and the stress concentration is easy to exist at the end part of a welding line in certain high-stress areas, thus the cracking and breaking conditions are easy to cause. The flexible frame generally adopts a riveted connection mode, has good bending resistance and torsion resistance, has the defects of insufficient rigidity, is easy to damage the suspension radiator and the suspension power assembly, and is extremely inconvenient to assemble and disassemble the rivet once the parts are damaged.

Disclosure of Invention

In order to solve the problems, the utility model provides the rigid and flexible frame, which adopts a riveted beam structure on the premise of ensuring the rigidity of the frame, has certain flexible deformation capacity, and ensures the local structural strength of the engineering vehicle and the overall stability of the vehicle. The technical scheme adopted by the utility model is as follows:

the utility model provides a rigid-flexible frame, includes bumper and main frame, the main frame includes left longeron, right longeron and a plurality of crossbeams, left side longeron, right longeron bilateral symmetry set up, bumper rigid connection is at the front end of left longeron, right longeron, the crossbeam is including the distance rod crossbeam, 1~3 riveting crossbeam I of group and the riveting crossbeam II that set gradually around, the top of distance rod crossbeam is equipped with the entablature, distance rod crossbeam and entablature all with left longeron, right longeron rigid connection, riveting crossbeam I and riveting crossbeam II all with left longeron, right longeron flexonics.

Above-mentioned rigid-flexible frame still includes the sub vehicle frame that is located main frame top, the longeron corresponds flexonics respectively on the left longeron, the right longeron of main frame about the sub vehicle frame, the front end of sub vehicle frame is located the distance rod crossbeam rear, rigid connection has lower stiffening beam on the main vehicle frame, lower stiffening beam is located the below of main vehicle frame and sub vehicle frame junction.

Above-mentioned rigid-flexible frame, the front portion outside of left longeron is equipped with fore-and-aft left stiffening beam, the outside of right longeron is equipped with fore-and-aft right stiffening beam.

The rigid and flexible frame is characterized in that the left longitudinal beam and the right longitudinal beam of the auxiliary frame are flexibly connected with the left longitudinal beam and the right longitudinal beam of the main frame through a plurality of riding bolts and a plurality of connecting plates.

Firstly, the front rigid and rear flexible frame structure is adopted, the front hydro-pneumatic suspension and the rear leaf spring balanced suspension engineering vehicle are adapted, the front rigid structure improves the stability of the hydro-pneumatic suspension, and the rear flexible structure reduces the torsion impact of the heavy-duty vehicle on the rear leaf spring suspension.

And secondly, a welding beam and riveting beam combination mode is adopted, so that the number of integral welding parts is reduced compared with that of rigid welding frames, the manufacturing efficiency is improved, and the manufacturing cost is reduced.

Thirdly, compared with the traditional vehicle, the engineering vehicle adapted by the utility model has good driver position comfort under the condition of empty and heavy load, strong bearing capacity under the condition of heavy load and high reliability; compared with the rigid engineering vehicle, the manufacturing cost and the maintenance cost are lower. Excellent economic benefits can be realized.

Drawings

FIG. 1 is a schematic side view of an embodiment of the present utility model;

fig. 2 is a schematic top view of an embodiment of the present utility model.

In the figure: 1-bumper, 2-thrust rod crossbeam, 3-upper reinforcement crossbeam, 4-lower reinforcement crossbeam, 5-riveting crossbeam I, 6-riveting crossbeam II, 7-left longeron, 8-right longeron, 9-left stiffening beam, 10-right stiffening beam, 11-subframe, 12 riding bolt, 13-connecting plate I, 14-connecting plate II, 15-connecting plate III.

Detailed Description

The technical scheme of the utility model is described in detail below with reference to the accompanying drawings, the left-right direction of the frame is the lower and upper direction shown in fig. 2, the up-down direction of the frame is the upper and lower direction shown in fig. 1, and the front-back direction of the frame is the left and right direction shown in fig. 1 or fig. 2.

This embodiment is just gentle frame, including bumper 1 and main frame, the main frame includes left longeron 7, right longeron 8 and a plurality of crossbeams, left side longeron 7, right longeron 8 bilateral symmetry set up, bumper 1 rigid welding is at the front end of left longeron 7, right longeron 8, the crossbeam includes the distance rod crossbeam 2, 1~3 group riveting crossbeam I5 and the riveting crossbeam II6 that set gradually around, the top of distance rod crossbeam 2 is equipped with the upper reinforcement crossbeam 3, distance rod crossbeam 2 and upper reinforcement crossbeam 3 all with left longeron 7, right longeron 8 rigid welding, riveting crossbeam I5 and riveting crossbeam II6 all with left longeron 7, right longeron 8 flexible riveting.

In order to improve the bearing performance of the front part of the main frame, a longitudinal left stiffening beam 9 is arranged on the outer side of the front part of the left longitudinal beam 7, and a longitudinal right stiffening beam 10 is arranged on the outer side of the right longitudinal beam 8.

The frame also comprises an auxiliary frame 11 positioned above the main frame, the left and right longitudinal beams of the auxiliary frame 11 are respectively correspondingly and flexibly connected to the left longitudinal beam 7 and the right longitudinal beam 8 of the main frame, the front end of the auxiliary frame 11 is positioned behind the thrust rod cross beam 2, the main frame is rigidly connected with a lower reinforcing cross beam 4, and the lower reinforcing cross beam 4 is positioned below the joint of the main frame and the auxiliary frame 11.

Specifically, the left and right longitudinal beams of the auxiliary frame 11 are flexibly connected with the left and right longitudinal beams 7 and 8 of the main frame through a plurality of riding bolts 12 and a plurality of connecting plates. With reference to fig. 1 and 2, the connection plates include a connection plate I13, two sets of connection plates II14 and a connection plate III15, which are sequentially arranged one behind the other, and the saddle bolts 12 may be disposed between the connection plates.

The working principle of the frame is as follows:

when the engineering vehicle provided with the frame runs on a flat road, the bumper 1, the upper reinforcing beam 3, the thrust rod beam 2 and the lower reinforcing beam 4 are rigidly connected with the left longitudinal beam 7 and the right longitudinal beam 8 of the main frame, and at the moment, the frame is in a rigid state, so that the front rigidity is higher, and the running stability of the engineering vehicle is facilitated.

When the engineering vehicle provided with the frame runs on a hollow road, the connection of the riveting cross beam I5 and the riveting cross beam II6 on the main frame is flexible connection, and the connection of the riding bolt 12, the connection plate I13, the connection plate II14 and the connection plate III15 with the main frame and the auxiliary frame 11 is flexible connection.

Claims

1. The utility model provides a rigid-flexible frame, includes bumper (1) and main frame, the main frame includes left longeron (7), right longeron (8) and a plurality of crossbeams, left longeron (7), right longeron (8) bilateral symmetry set up, its characterized in that: bumper (1) rigid connection is in the front end of left longeron (7), right longeron (8), the crossbeam is including distance rod crossbeam (2), 1~3 riveting crossbeam I (5) and riveting crossbeam II (6) that set gradually around, the top of distance rod crossbeam (2) is equipped with stiffener crossbeam (3), distance rod crossbeam (2) and last stiffener crossbeam (3) all with left longeron (7), right longeron (8) rigid connection, riveting crossbeam I (5) and riveting crossbeam II (6) all with left longeron (7), right longeron (8) flexonics.

2. The rigid flexible vehicle frame according to claim 1, wherein: the auxiliary frame is characterized by further comprising an auxiliary frame (11) positioned above the main frame, wherein the left and right longitudinal beams of the auxiliary frame (11) are respectively and correspondingly flexibly connected to the left longitudinal beam (7) and the right longitudinal beam (8) of the main frame, the front end of the auxiliary frame (11) is positioned behind the thrust rod cross beam (2), the main frame is rigidly connected with a lower reinforcing cross beam (4), and the lower reinforcing cross beam (4) is positioned below the joint of the main frame and the auxiliary frame (11).

3. The rigid flexible vehicle frame according to claim 1, wherein: the outer side of the front part of the left longitudinal beam (7) is provided with a longitudinal left stiffening beam (9), and the outer side of the right longitudinal beam (8) is provided with a longitudinal right stiffening beam (10).

4. The rigid flexible vehicle frame according to claim 2, wherein: the left and right longitudinal beams of the auxiliary frame (11) are flexibly connected with the left longitudinal beam (7) and the right longitudinal beam (8) of the main frame through a plurality of riding bolts (12) and a plurality of connecting plates.