Chassis structure of three-axle six-wheel automobile

Abstract

The utility model belongs to the technical field of automobile manufacturing, and provides a chassis structure of a three-axle six-wheel automobile, which comprises a frame, a front axle, a middle axle and a third axle, the balance shaft suspension is located between the middle axle and the third axle and fixed relative to the frame, plate springs are fixed to the two sides of the balance shaft suspension respectively and distributed in the longitudinal direction of the frame, and the two ends of each plate spring are in lap joint with the middle axle and the third axle respectively; the thrust mechanism comprises at least three pairs of thrust rods, any pair of thrust rods are symmetrically distributed relative to the balance shaft suspensions, and the at least three thrust rods located on the same side of the balance shaft suspensions are matched to form thrust supports from the middle axle / third axle to the tops and the bottoms of the side end faces of the adjacent balance shaft suspensions. The stability of the vehicle body can be improved, and the off-road performance is enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile manufacturing, and in particular relates to a chassis structure of a three-axle six-wheel automobile. Background Art

[0002] The existing three-axle six-wheel chassis is generally more commonly used in heavy-duty vehicles. Its structure is a chassis system developed to meet the use scenarios of heavy trucks. Its length, width, and height are designed according to the corresponding body proportions. Although it has a strong carrying capacity, its chassis longitudinal beam and cross beam structure, size, connection method, and suspension structure are completely designed for heavy-duty vehicles. The longitudinal beam is a straight-through beam design, with a simple structure and a bulky posture. The front axle and the middle and rear axle suspensions use a rigid support system with a multi-leaf spring structure to connect the axle to the chassis. It has poor comfort and high torsional stiffness, poor off-road performance, and poor passing ability in complex road conditions. It is not suitable for use on small three-axle six-wheel vehicles. Therefore, a chassis structure suitable for small three-axle six-wheel vehicles is urgently needed to solve the above-mentioned problems. Utility Model Content

[0003] The utility model aims to provide a chassis structure of a three-axle six-wheel vehicle to solve the above problems and provide a three-axle six-wheel vehicle chassis that can improve vehicle body stability and enhance off-road performance.

[0004] To achieve the above object, the utility model provides the following solution: a chassis structure of a three-axle six-wheel vehicle, comprising:

[0005] A vehicle frame, a front axle, a middle axle and a third axle arranged on the vehicle frame;

[0006] A balance shaft suspension is located between the middle bridge and the third bridge and is fixed relative to the vehicle frame. Leaf springs are fixed on both sides of the balance shaft suspension. The leaf springs are distributed along the longitudinal direction of the vehicle frame, and the two ends of the leaf springs are overlapped on the middle bridge and the third bridge respectively.

[0007] The thrust mechanism comprises at least three pairs of thrust rods, any pair of the thrust rods being symmetrically distributed relative to the balancing shaft suspension, wherein at least three of the thrust rods located on the same side of the balancing shaft suspension cooperate to form a thrust support from the middle bridge / third bridge to the top and bottom of the adjacent side end surface of the balancing shaft suspension.

[0008] Preferably, at least one end of the thrust rod is hinged on the bridge package of the middle bridge / third bridge, and the other end of the thrust rod is hinged to the top of the balance shaft suspension along the longitudinal direction.

[0009] Preferably, the middle bridge / third bridge is fixed with supports at both lateral ends, respectively, and the supports are configured to be overlapped and fixed with one end of the adjacent leaf spring and hinged with one end of the adjacent thrust rod, and the other end of the thrust rod is hinged with the bottom of the balance shaft suspension along the longitudinal direction.

[0010] Preferably, three thrust rods are arranged on the same side of the balancing shaft suspension, wherein two of the thrust rods are arranged laterally at both ends of the balancing shaft suspension and are hinged to the bottom of the balancing shaft suspension, and the other thrust rod is arranged in the middle of the balancing shaft suspension and is hinged to the top of the balancing shaft suspension.

[0011] Preferably, the balance shaft suspension comprises:

[0012] A balance shaft crossbeam, fixedly connected to the vehicle frame in a transverse direction;

[0013] A pair of balancing shaft supports are respectively fixedly connected to the two ends of the balancing shaft cross beam, and a slot is opened on the balancing shaft support. The top end of the leaf spring is overlapped in the slot and fixed relative to the balancing shaft support. The two sides of the balancing shaft support are respectively hinged to the adjacent thrust rods.

[0014] Preferably, the front axle is a double wishbone suspension mounted on the frame.

[0015] Preferably, the middle bridge and the third bridge are eccentric integral bridges installed on the frame.

[0016] Preferably, the frame comprises:

[0017] At least two relatively distributed longitudinal beams, a plurality of cross beams are fixedly connected in sequence along the transverse direction between the two longitudinal beams, wherein at least three cross beams are arranged at the front bridge part, and at least four cross beams are arranged at the middle bridge and the third bridge part.

[0018] Compared with the prior art, the utility model has the following advantages and technical effects:

[0019] The utility model arranges a balancing axle suspension between the middle bridge and the third bridge of the frame, uses the balancing axle suspension to fix a leaf spring, and overlaps the two ends of the leaf spring on the middle bridge and the third bridge respectively in the longitudinal direction, so as to form a spring rigid support between the frame and the middle bridge and the third bridge, thereby improving stability; and symmetrically arranges at least three pairs of thrust rods on both sides of the balancing axle suspension, and any pair of thrust rods are symmetrically distributed on both sides of the balancing axle suspension in the longitudinal direction, and provide thrust support to the middle bridge and the third bridge respectively; in addition, at least three thrust rods located on the same side of the balancing axle suspension can provide thrust support along the adjacent middle bridge / third bridge to the top and bottom of the adjacent balancing axle suspension, thereby forming a balanced support force between the balancing axle suspension and the middle bridge and the third bridge respectively, thereby realizing providing a chassis structure for a three-axle six-wheel vehicle, effectively improving the stability of the overall frame, and improving the off-road performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor:

[0021] Figure 1 is a structural diagram of the frame;

[0022] Figure 2 It is a structural schematic diagram of a balance shaft suspension;

[0023] Among them, 1. crossbeam; 2. longitudinal beam; 3. wheel; 4. front axle; 5. middle axle; 6. third axle; 7. balance shaft crossbeam; 8. balance shaft support; 9. leaf spring; 10. support; 11. bridge package; 12. thrust rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] Example: Refer to Figure 1-Figure 2 , a chassis structure of a three-axle six-wheel vehicle, comprising:

[0027] A vehicle frame, a front axle 4, a middle axle 5 and a third axle 6 arranged on the vehicle frame;

[0028] The balance shaft suspension is located between the middle bridge 5 and the third bridge 6 and is fixed relative to the vehicle frame. Leaf springs 9 are fixed on both sides of the balance shaft suspension. The leaf springs 9 are distributed along the longitudinal direction of the vehicle frame, and the two ends of the leaf springs 9 are overlapped on the middle bridge 5 and the third bridge 6 respectively.

[0029] The thrust mechanism includes at least three pairs of thrust rods 12, and any pair of thrust rods 12 is symmetrically distributed relative to the balancing shaft suspension, wherein at least three thrust rods 12 located on the same side of the balancing shaft suspension cooperate to form a thrust support from the middle bridge 5 / the third bridge 6 to the top and bottom of the side end surface of the adjacent balancing shaft suspension.

[0030] The utility model sets a balancing shaft suspension between the middle bridge 5 and the third bridge 6 of the frame, uses the balancing shaft suspension to fix the leaf spring 9, and overlaps the two ends of the leaf spring 9 on the middle bridge 5 and the third bridge 6 in the longitudinal direction, so as to form a spring rigid support between the frame and the middle bridge 5 and the third bridge 6, thereby improving stability. In addition, at least three pairs of thrust rods 12 are symmetrically arranged on both sides of the balancing shaft suspension, and any pair of thrust rods 12 are symmetrically distributed on both sides of the balancing shaft suspension in the longitudinal direction, and thrust support is provided to the middle bridge 5 and the third bridge 6 respectively. In addition, at least three thrust rods 12 located on the same side of the balancing shaft suspension can provide thrust support along the adjacent middle bridge 5 / third bridge 6 to the top and bottom of the adjacent balancing shaft suspension, thereby forming a balanced support force between the balancing shaft suspension and the middle bridge 5 and the third bridge 6 respectively, thereby realizing a chassis structure for a three-axle six-wheel vehicle, effectively improving the stability of the overall frame, and improving the off-road performance.

[0031] Furthermore, three thrust rods 12 are arranged on the same side of the balancing shaft suspension, wherein two thrust rods 12 are arranged laterally at both ends of the balancing shaft suspension and are hinged to the bottom of the balancing shaft suspension, and the other thrust rod 12 is arranged in the middle of the balancing shaft suspension and is hinged to the top of the balancing shaft suspension.

[0032] In combination with the supporting effects of the thrust rods 12 on the top and bottom of the balancing shaft suspension, it can be understood that by arranging the three thrust rods 12 separately from the two ends to the middle, and the two thrust rods 12 located at the two ends of the balancing shaft suspension respectively support the bottom of the horizontal shaft suspension, while the middle thrust rod 12 supports the top of the balancing shaft suspension, a cage-like thrust support mechanism with two up and four down is formed in three dimensions, thereby further enhancing the effect of improving the stability of the frame.

[0033] Furthermore, one end of at least one thrust rod 12 is hinged on the bridge package 11 of the middle bridge 5 / the third bridge 6, and the other end of the thrust rod 12 is hinged to the top of the balance shaft suspension along the longitudinal direction.

[0034] Furthermore, supports 10 are fixedly connected to both lateral ends of the middle bridge 5 / third bridge 6, and the supports 10 are configured to be overlapped and fixed with one end of the adjacent leaf spring 9 and hinged with one end of the adjacent thrust rod 12, and the other end of the thrust rod 12 is hinged with the bottom of the balance shaft suspension along the longitudinal direction.

[0035] By hingedly connecting one end of a thrust rod 12 to the bridge package 11 of the middle bridge 5 and the third bridge 6, and hingedly connecting the other end of the thrust rod 12 to the top of the balance shaft suspension, combined with one end of the thrust rod 12 hinged at both ends of the middle bridge 5 and the third bridge 6, and hingedly connecting the other end of the thrust rod 12 to the bottom of the balance shaft suspension, at least six thrust rods 12 cooperate to form a two-up and four-down thrust support mechanism, thereby improving the stability of the frame.

[0036] Furthermore, the balance shaft suspension comprises:

[0037] The balance shaft cross beam 7 is fixedly connected to the vehicle frame in the transverse direction;

[0038] A pair of balancing shaft supports 8 are respectively fixedly connected to the two ends of the balancing shaft cross beam 7. A slot is opened on the balancing shaft support 8. The top end of the leaf spring 9 is overlapped in the slot and fixed relative to the balancing shaft support 8. The two sides of the balancing shaft support 8 are respectively hinged to the adjacent thrust rods 12.

[0039] The balancing shaft beam 7 is erected and fixed on the vehicle frame in the transverse direction, and a pair of balancing shaft supports 8 are respectively fixed on both ends of the balancing shaft beam 7, and the leaf spring 9 is stably fixed by the balancing shaft supports 8. When the thrust rod 12 is hinged to the balancing shaft beam 7, the thrust rod 12 constitutes the hinge to the top of the balancing shaft suspension, and the bottom of the balancing shaft support 8 is used for the hinge of the thrust rod 12, so that the thrust rod 12 is hinged to the bottom of the balancing shaft suspension.

[0040] Furthermore, the front axle 4 is a double wishbone suspension installed on the vehicle frame.

[0041] Furthermore, the middle bridge 5 and the third bridge 6 are eccentric integral bridges installed on the vehicle frame.

[0042] Furthermore, the frame comprises:

[0043] At least two longitudinal beams 2 are arranged opposite to each other, and a plurality of cross beams 1 are fixedly connected in sequence along the transverse direction between the two longitudinal beams 2. Among them, at least three cross beams 1 are arranged at the front bridge 4, and at least four cross beams 1 are arranged at the middle bridge 5 and the third bridge 6.

[0044] Furthermore, the longitudinal beam 2 is 5500-6500 mm long.

[0045] It can be understood that a thickened plate is fixed inside the longitudinal beam 2 between the front axle 4 and the middle bridge 5, and the preferred thickened plate is 2-3 mm. The balance shaft crossbeam 7 can be directly fixed to the crossbeam 1 between the two longitudinal beams 2, and a pair of balance shaft supports 8 are respectively fixed to the bottom of both ends of the crossbeam 1.

[0046] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A chassis structure of a three-axle six-wheel vehicle, characterized in that: include: A vehicle frame, a front bridge (4), a middle bridge (5) and a third bridge (6) arranged on the vehicle frame; A balancing axle suspension is located between the middle bridge (5) and the third bridge (6) and is fixed relative to the vehicle frame, and leaf springs (9) are respectively fixed on both sides of the balancing axle suspension, and the leaf springs (9) are distributed along the longitudinal direction of the vehicle frame, and the two ends of the leaf springs (9) are respectively overlapped on the middle bridge (5) and the third bridge (6); The thrust mechanism comprises at least three pairs of thrust rods (12), wherein any pair of the thrust rods (12) are symmetrically distributed relative to the balancing shaft suspension, wherein at least three of the thrust rods (12) located on the same side of the balancing shaft suspension cooperate to form a thrust support from the middle bridge (5) / third bridge (6) to the top and bottom of the adjacent balancing shaft suspension side end surface.

2. The chassis structure of a three-axle six-wheel vehicle according to claim 1, characterized in that: At least one end of the thrust rod (12) is hinged on the bridge package (11) of the middle bridge (5) / third bridge (6), and the other end of the thrust rod (12) is hinged to the top of the balance shaft suspension along the longitudinal direction.

3. The chassis structure of a three-axle six-wheel vehicle according to claim 1, characterized in that: The middle bridge (5) / third bridge (6) is fixedly connected with a support (10) at both ends in the transverse direction. The support (10) is configured to be overlapped and fixed with one end of the adjacent leaf spring (9) and to be hinged with one end of the adjacent thrust rod (12). The other end of the thrust rod (12) is hinged with the bottom of the balance shaft suspension along the longitudinal direction.

4. The chassis structure of a three-axle six-wheel vehicle according to claim 1, characterized in that: Three thrust rods (12) are arranged on the same side of the balancing shaft suspension, wherein two of the thrust rods (12) are arranged at both ends of the balancing shaft suspension in the transverse direction and are hinged to the bottom of the balancing shaft suspension, and the other thrust rod (12) is arranged in the middle of the balancing shaft suspension and is hinged to the top of the balancing shaft suspension.

5. The chassis structure of a three-axle six-wheel vehicle according to claim 1 is characterized in that: The balance shaft suspension comprises: A balance shaft crossbeam (7) is fixedly connected to the vehicle frame in the transverse direction; A pair of balancing shaft supports (8) are respectively fixedly connected to the two ends of the balancing shaft cross beam (7); a slot is provided on the balancing shaft support (8); the top end of the leaf spring (9) is overlapped in the slot and fixed relative to the balancing shaft support (8); and the two sides of the balancing shaft support (8) are respectively hinged to the adjacent thrust rods (12).

6. The chassis structure of a three-axle six-wheel vehicle according to claim 1, characterized in that: The front axle (4) is a double wishbone suspension mounted on the vehicle frame.

7. The chassis structure of a three-axle six-wheel vehicle according to claim 1, characterized in that: The middle bridge (5) and the third bridge (6) are eccentric integral bridges installed on the vehicle frame.

8. The chassis structure of a three-axle six-wheel vehicle according to claim 1, characterized in that: The frame comprises: At least two longitudinal beams (2) are arranged opposite to each other, and a plurality of cross beams (1) are fixedly connected in sequence along the transverse direction between the two longitudinal beams (2), wherein at least three cross beams (1) are arranged at the front bridge (4), and at least four cross beams (1) are arranged at the middle bridge (5) and the third bridge (6).

Images