Reversely-mounted axle and vehicle chassis provided with same

Abstract

The invention discloses a reversely-installed axle and a vehicle chassis provided with the reversely-installed axle, the reversely-installed axle comprises an axle body, two sets of guide arms and a connecting piece, the axle body comprises a center beam and wheel edge hub components arranged at the two ends of the center beam, and the center beam is installed above the two sets of guide arms in a supported mode; the connecting piece comprises an upper bearing piece, a lower fixing piece, a U-shaped bolt and an adaptive nut of the U-shaped bolt, the upper bearing piece is arranged between the center beam and the guide arm, the lower fixing piece is arranged below the guide arm and clamps the guide arm together with the upper bearing piece, and the U-shaped bolt clamps the center beam and sequentially penetrates through the upper bearing piece and the lower fixing piece downwards. And relative fixation is carried out through an adaptive nut. And the four groups of reversely-mounted axle mechanisms are assembled below the frame mechanism of the vehicle chassis through suspension mechanisms. The structure is simple, the height of the whole frame is reduced through reverse assembly matching of the guide arms and the axle center beam, and therefore the cargo loading capacity of a vehicle is increased, and the transportation cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of automobile manufacturing, and in particular to a reverse-mounted vehicle axle and a vehicle chassis equipped with the vehicle axle. Background Art

[0002] The axle of a car is also called the axle. It is connected to the frame or load-bearing body through the suspension, and wheels are installed at both ends. The function of the axle is to bear the load of the car and maintain the normal driving of the car on the road. The axle can be integral, like a huge barbell, with the body supported by the suspension system at both ends, so the integral axle is usually used with a non-independent suspension; the axle can also be disconnected, like two umbrellas inserted on both sides of the body, and then each supports the body through the suspension system, so the disconnected axle is used with an independent suspension. After the existing traditional axle is assembled and installed, the body reaches a relatively high height, about 1300mm to 1350mm. Different height limits will be encountered during the driving process of the vehicle, which makes the cargo loaded on the vehicle have a certain maximum height limit, making the vehicle loading volume smaller, and the weight of the cargo that can be carried is reduced, thereby increasing the transportation cost. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies of the above-mentioned prior art and to provide a reverse-mounted axle and a vehicle chassis equipped with the axle.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a reverse-mounted axle, including an axle body, two groups of guide arms and a connecting piece for connecting the two, wherein the axle body includes a center beam and wheel-side hub components arranged at both ends of the center beam, and the center beam of the axle body is mounted above the two groups of guide arms; the connecting piece includes an upper supporting piece, a lower fixing piece, a U-bolt and an adapter nut thereof, wherein the upper supporting piece is placed between the center beam and the guide arm, the lower fixing piece is placed under the guide arm, and clamps the guide arm together with the upper supporting piece, the U-bolt clamps the center beam and passes through the upper supporting piece and the lower fixing piece downward in sequence, and is relatively fixed by the adapter nut.

[0005] Furthermore, the guide arm includes a rolled ear portion, a straight portion and a curved portion, wherein the rolled ear portion and the curved portion are respectively located at both ends of the straight portion and are sequentially connected and integrally formed, and the rolled ear portion is curled to form a curling hole for installing the guide arm bracket; the curved portion has a tendency to bend and warp downward from the straight portion to form a height difference between the axis of the curling hole and the lower surface of the straight portion.

[0006] Furthermore, a long strip docking groove is provided at the bottom of the upper supporting member, and its width is equal to the width of the straight part in the guide arm; an arc groove with an arc equal to the curvature of the above-mentioned center beam is provided at the top of the upper supporting member; and an upper bolt hole is provided at each of the four corners of the upper supporting member.

[0007] The top surface of the lower fixing member is a planar structure, and the four corners of the lower fixing member are respectively provided with a lower bolt hole coaxially symmetrical with the upper bolt hole.

[0008] Furthermore, a positioning hole is provided on the straight portion of the guide arm, and a positioning bolt is passed through the positioning hole; correspondingly, a positioning slot hole is provided in the center of the upper supporting member, and the screw head of the positioning bolt is placed in the positioning slot hole; a long slot hole is provided at the center position of the lower fixing member, which is arranged along its length direction, and the lower end of the positioning bolt passes through the long slot hole.

[0009] The technical solution described in the present invention also provides a vehicle chassis, which is equipped with the above-mentioned reverse-mounted axle, specifically including a frame mechanism, an axle mechanism and a corresponding suspension mechanism, wherein the axle mechanism includes a first axle, a second axle, a third axle and a fourth axle, the first axle is arranged at the middle front part of the frame mechanism, the second axle, the third axle and the fourth axle are arranged side by side at the middle rear part of the frame mechanism, the above-mentioned first axle, second axle, third axle and fourth axle have the same structure, and are all reverse-mounted axles; the suspension mechanism is installed between the corresponding axle mechanism and the frame mechanism.

[0010] Furthermore, the frame structure includes a left longitudinal beam, a right longitudinal beam and a plurality of groups of intermediate cross beams connecting and fixing the left and right longitudinal beams, wherein the left longitudinal beam and the right longitudinal beam have the same structure, are arranged parallel and symmetrically to each other, and together form a frame body, and a goose neck for traction connection is provided at the front end of the frame body; a front end beam, a middle front cantilever beam, a middle cantilever beam, a middle rear cantilever beam and a rear end beam are also installed on the frame body in sequence from front to back.

[0011] Furthermore, the suspension mechanism includes a suspension, a front shock absorber spring assembly, a first connecting rod, a rear oil-gas spring assembly and an upper connecting rod. The suspension is fixedly installed at a corresponding position of the bottom of the corresponding side longitudinal beam. The curling hole in the above-mentioned guide arm is rotatably installed with a guide arm bracket, and the two ends of the guide arm bracket are axially connected to the lower end of the suspension; the front end of the first connecting rod is installed with the front shock absorber spring assembly, and the top end of the front shock absorber spring assembly is fixed to the bottom of the longitudinal beam on the corresponding side; the middle part of the first connecting rod is hinged to the bottom of the suspension, and the rear end thereof is placed under the guide arm; the rear oil-gas spring assembly is installed at the top end of the curved part in the guide arm, and the upper end thereof is connected to the bottom of the longitudinal beam on the corresponding side; the lower end of the upper connecting rod is axially connected to the upper supporting member, and the upper end thereof is axially fixed to the inner wall of the web in the longitudinal beam on the corresponding side.

[0012] Furthermore, the suspension mechanisms corresponding to the first axle and the second axle include a front shock-absorbing spring assembly and a first connecting rod; the suspension mechanisms corresponding to the third axle and the fourth axle do not include a front shock-absorbing spring assembly and a first connecting rod, so as to shorten the distance between the second axle, the third axle and the fourth axle.

[0013] Furthermore, the tires installed outside the wheel hub components in the axle body are small-diameter tires.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a simple structure, and utilizes the reverse installation of the guide arm and the center beam of the axle to reduce the frame height, so that the vehicle platform cargo surface becomes lower, with a height of about 1100mm, thereby increasing the vehicle's upward loading volume and cargo loading capacity, reducing transportation costs and improving transportation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the reverse-mounted axle of the present invention;

[0016] Figure 2 It is an assembly relationship diagram between the central beam, the guide arm and the connecting parts of the reverse-mounted axle of the present invention;

[0017] Figure 3 for Figure 2 Left view of the middle structure;

[0018] Figure 4 It is a structural schematic diagram of the guide arm in the present invention;

[0019] Figure 5 It is a structural schematic diagram of the upper supporting member in the present invention;

[0020] Figure 6 It is a bottom view of the upper supporting member in the present invention;

[0021] Figure 7 It is a structural schematic diagram of the lower fixing member in the present invention;

[0022] Figure 8 is a bottom view of the lower fixing member of the present invention;

[0023] Fig. 9 It is a schematic diagram of the overall structure of a vehicle chassis in the present invention;

[0024] Fig.10 A bottom structural view of a vehicle chassis in the present invention;

[0025] Fig.11 It is an assembly relationship diagram of the reverse-mounted axle installed on the frame mechanism in the present invention;

[0026] In the figure: 1, axle body, 2, guide arm, 3, connecting part, 4, frame mechanism, 5, suspension mechanism, 7, wheel, 11, center beam, 12, wheel hub component, 21, rolled ear part, 22, straight part, 23, curved part, 24, curling hole, 25, positioning bolt, 31, upper supporting part, 32, lower fixing part, 33, U-bolt, 311, arc groove, 312, long strip docking groove, 313, positioning slot hole, 314, upper bolt hole, 321, long strip slot hole, 322, lower bolt hole, 41, left longitudinal beam, 42, right longitudinal beam, 51, front shock absorber spring assembly, 52, first connecting rod, 53, suspension, 54, rear oil and gas spring assembly, 55, upper connecting rod, 61, first axle, 62, second axle, 63, third axle, 64, fourth axle. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and do not specifically refer to the order or sequence, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, welding, riveting, bonding, etc., or a detachable connection, threaded connection, key connection, pin connection, etc., or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figures 1 to 3As shown, a reverse-mounted vehicle axle specifically includes a vehicle axle body 1, two sets of guide arms 2, and a connector 3 for connecting the two, wherein the vehicle axle body 1 includes a center beam 11 and wheel hub components 12 arranged at both ends of the center beam 11. The wheel hub components 12 adopt relevant technical features in the prior art, which will not be described in detail here. The exterior should be adapted to install a small-diameter wheel. The vehicle axle body 1 is mounted above the two sets of guide arms 2, combined with Figure 4 As shown, the guide arm 2 includes a rolled ear portion 21, a straight portion 22 and a curved portion 23, wherein the rolled ear portion 21 and the curved portion 23 are respectively located at both ends of the straight portion 22 and are connected in sequence, and the overall structure is formed in one piece, the rolled ear portion 21 is curled to form a curling hole 24 for installing the guide arm bracket, and the curved portion 23 has a tendency to bend downward from the straight portion 22 to form a height difference between the axis of the curling hole 24 and the lower surface of the straight portion 22.

[0030] The central beam 11 is mounted above the straight portion 22 of the two guide arms 2, and is fixedly connected to the two guide arms 2 via two sets of connecting members 3, wherein the connecting members 3 each include an upper supporting member 31, a lower fixing member 32, and two U-shaped bolts 33 and their matching nuts. The upper supporting member 31 is placed between the central beam 11 and the straight portion 22 of the guide arm 2, Figure 5 and Figure 6 As shown, the top of the upper supporting member 31 is provided with an arc groove 311 with the same curvature as the center beam 11; the bottom of the upper supporting member 31 is provided with a long strip docking groove 312 with the same width as the straight portion 22 of the guide arm 2, and the long strip docking groove 312 is arranged along the length direction of the upper supporting member 31, and is relatively perpendicular to the central axis of the arc groove 311; at the same time, an upper bolt hole 314 is respectively provided at the four corners of the upper supporting member 31, which runs through it from top to bottom; when in use, the above-mentioned long strip docking groove 312 is clamped on the straight portion 22 of the guide arm, and the arc groove 311 of the upper supporting member 31 just supports the center beam 11 upward. The lower fixing member 32 is placed below the guide arm 2, corresponding to the upper supporting member 31 from top to bottom, and its top surface is a flat structure, and with reference to Figure 7 and Figure 8 , a lower bolt hole 322 is respectively provided at the four corners of the lower fixing member 32. The U-shaped bolt 33 passes through the upper bolt hole 314 on the upper supporting member 31 and the lower bolt hole 322 on the lower fixing member 32 from the top of the center beam 11 downwards in sequence, and is then fastened with a nut adapted thereto. The center beam 11 is placed in the U-shaped bend of the U-shaped bolt 33, and the arc diameter of the U-shaped bend of the U-shaped bolt 33 is equal to the diameter of the center beam 11. Through the above assembly method, the center beam 11 is placed above the guide arm 2, realizing the reverse installation of the axle.

[0031] A further optimized technical solution is that a positioning hole is further provided on the straight portion 22 of the guide arm 2, and a positioning bolt 25 is passed through the positioning hole. Correspondingly, a positioning slot 313 is further provided on the upper supporting member 31, which is located at the center of the arc-shaped slot 311, and the screw head of the positioning bolt 25 is placed in the positioning slot 313; a corresponding long slot 321 is provided on the lower fixing member 32, which is located at the center of the lower fixing member 32 and is arranged along its length direction.

[0032] Each of the U-bolts 33 is made of an alloy material having sufficient rigidity.

[0033] In addition, the present invention also provides a vehicle chassis, which is equipped with the above-mentioned reverse-mounted axle, such as Fig. 9 and Fig.10 As shown, it specifically includes a frame mechanism 4, an axle mechanism and a corresponding suspension mechanism 5, with the normal operating direction of the vehicle chassis as the front. The frame mechanism 4 includes a left longitudinal beam 41, a right longitudinal beam 42 and a plurality of intermediate cross beams connecting and fixing the left and right longitudinal beams, wherein the left longitudinal beam 41 and the right longitudinal beam 42 have the same structure, are arranged parallel and symmetrically to each other, and together form a frame body, the front end of the frame body is provided with a goose neck for traction connection, and the rear end frame bottom of the goose neck is provided with a retractable leg for supporting the entire frame; the frame body is also sequentially installed with a front beam, a middle front beam, a middle beam, a middle rear beam and a rear beam from front to back, and the specific structure can be set according to the actual processing and production needs, referring to the existing relevant technical features, and will not be repeated here. The axle mechanism includes a first axle 61, a second axle 62, a third axle 63 and a fourth axle 64, wherein the first axle 61 is arranged at the middle front part of the frame mechanism 4, and the second axle 62, the third axle 63 and the fourth axle 64 are arranged side by side at the middle rear part of the frame mechanism 4 to adapt to the overall frame cargo center of gravity; the first axle 61, the second axle 62, the third axle 63 and the fourth axle 64 have the same structure, and all adopt the above-mentioned reverse-mounted axle structure to reduce the height of the frame cargo surface. The first axle 61, the second axle 62, the third axle 63 and the fourth axle 64 are all equipped with two corresponding sets of suspension mechanisms 5, which are installed between the two ends of the corresponding axle mechanism and the frame mechanism 4, combined with Fig.11As shown, each suspension mechanism 5 includes a suspension 53, a front shock-absorbing spring assembly 51, a first connecting rod 52, a rear oil-gas spring assembly 54 and an upper connecting rod 55. The suspension 53 is welded and fixed to a designated position at the bottom of the lower wing plate in the corresponding side longitudinal beam, and its lower end cross-section is U-shaped. A transverse axial hole is also provided on the lower end side wall of the suspension 53. A guide arm bracket is rotatably installed in the curling hole 24 of the guide arm 2 in the above-mentioned reverse-mounted axle, and both ends of the guide arm bracket are axially connected to the axial hole at the lower end of the suspension 53. The guide arm 2 extends to the rear of the frame body, and the top of the bent portion 23 thereof is installed with a rear oil-gas spring assembly 54, and the top of the rear oil-gas spring assembly 54 is fixedly connected to the bottom of the longitudinal beam; the bottom end of the suspension 53 is also axially connected to the middle of the first connecting rod 52, and the front end of the first connecting rod 52 is connected to the bottom of the front shock-absorbing spring assembly 51, and the top of the front shock-absorbing spring assembly 51 is fixedly installed to the bottom of the corresponding side longitudinal beam through a fixing seat; the rear end of the first connecting rod 52 is open, and a rotating shaft is installed transversely, which is supported under the guide arm 2. Through the above connection structure, the frame assembly of the reverse-mounted axle is completed together. The rear end of the upper supporting member 31 in the reverse-mounted axle is fixedly installed with a support rod extending inward, and the lower end of the upper connecting rod 55 is axially connected to the support rod, and the upper end thereof is axially fixed to the inner wall of the web plate in the corresponding side longitudinal beam through a support seat.

[0034] Furthermore, the height of the suspension 53 is slightly greater than the outermost radius of the wheel hub component 12 , and a small-diameter tire 7 is mounted outside the wheel hub component 12 .

[0035] At the same time, in order to shorten the distances between the second axle 62 , the third axle 63 and the fourth axle 64 , the suspension mechanism 5 corresponding to the third axle 63 and the fourth axle 64 does not include the front shock-absorbing spring assembly 51 and the first connecting rod 52 .

[0036] A spare tire mounting frame is also provided at the bottom of the rear end of the frame mechanism 4 .

[0037] The technical features that have not been mentioned or described in detail in the technical solution of the present invention can be achieved by adopting or referring to the relevant technical solutions in the prior art.

[0038] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A reverse mounted axle, characterized in that: It includes an axle body, two groups of guide arms and a connecting piece for connecting the two, wherein the axle body includes a center beam and wheel-side hub components arranged at both ends of the center beam, and the center beam of the axle body is mounted above the two groups of guide arms; the connecting piece includes an upper supporting piece, a lower fixing piece, a U-shaped bolt and an adapter nut thereof, wherein the upper supporting piece is placed between the center beam and the guide arm, the lower fixing piece is placed below the guide arm and clamps the guide arm together with the upper supporting piece, the U-shaped bolt clamps the center beam and passes through the upper supporting piece and the lower fixing piece in sequence downward, and is relatively fixed by the adapter nut.

2. The reverse-mounted axle according to claim 1, characterized in that: The guide arm includes a rolled ear portion, a straight portion and a curved portion, wherein the rolled ear portion and the curved portion are respectively located at two ends of the straight portion and are sequentially connected and integrally formed, and the rolled ear portion is curled to form a curling hole for installing the guide arm bracket; the curved portion has a tendency to bend downward from the straight portion to form a height difference between the axis of the curling hole and the lower surface of the straight portion.

3. The reverse mounted axle according to claim 2, characterized in that: The bottom of the upper supporting member is provided with a long strip-shaped docking groove, the width of which is equal to the width of the straight portion of the guide arm; the top of the upper supporting member is provided with an arc-shaped groove equal to the curvature of the above-mentioned central beam; the four corners of the upper supporting member are respectively provided with an upper bolt hole; The top surface of the lower fixing member is a planar structure, and the four corners of the lower fixing member are respectively provided with a lower bolt hole coaxially symmetrical with the upper bolt hole.

4. The reverse-mounted vehicle axle according to claim 2, characterized in that: A positioning hole is provided on the straight portion of the guide arm, and a positioning bolt is installed in the positioning hole; correspondingly, a positioning slot is provided in the center of the upper supporting member, and the screw head of the positioning bolt is placed in the positioning slot; a long slot is provided at the center position of the lower fixing member, which is arranged along its length direction, and the lower end of the positioning bolt passes through the long slot.

5. A vehicle chassis, equipped with a reverse-mounted axle according to any one of claims 1 to 4, characterized in that: It includes a frame mechanism, an axle mechanism and a corresponding suspension mechanism, wherein the axle mechanism includes a first axle, a second axle, a third axle and a fourth axle, the first axle is arranged at the middle front part of the frame mechanism, the second axle, the third axle and the fourth axle are arranged side by side at the middle rear part of the frame mechanism, the first axle, the second axle, the third axle and the fourth axle have the same structure, and are all reverse-mounted axles; the suspension mechanism is installed between the corresponding axle mechanism and the frame mechanism.

6. A vehicle chassis according to claim 5, characterized in that: The frame structure includes a left longitudinal beam, a right longitudinal beam and a plurality of groups of intermediate cross beams connecting and fixing the left and right longitudinal beams, wherein the left longitudinal beam and the right longitudinal beam have the same structure, are arranged parallel and symmetrically to each other, and together form a frame body, and a goose neck for traction connection is provided at the front end of the frame body; a front end beam, a middle front cantilever beam, a middle cantilever beam, a middle rear cantilever beam and a rear end beam are also installed on the frame body in sequence from front to back.

7. A vehicle chassis according to claim 6, characterized in that: The suspension mechanism includes a suspension, a front shock absorber spring assembly, a first connecting rod, a rear oil-gas spring assembly and an upper connecting rod. The suspension is fixedly installed at a corresponding position at the bottom of the corresponding side longitudinal beam. The curling hole in the above-mentioned guide arm is rotatably installed with a guide arm bracket, and the two ends of the guide arm bracket are axially connected to the lower end of the suspension; the front end of the first connecting rod is installed with the front shock absorber spring assembly, and the top end of the front shock absorber spring assembly is fixed to the bottom of the longitudinal beam on the corresponding side; the middle part of the first connecting rod is hinged to the bottom of the suspension, and the rear end thereof is placed under the guide arm; the rear oil-gas spring assembly is installed at the top end of the curved part in the guide arm, and the upper end thereof is connected to the bottom of the longitudinal beam on the corresponding side; the lower end of the upper connecting rod is axially connected to the upper supporting member, and the upper end thereof is axially fixed to the inner wall of the web in the longitudinal beam on the corresponding side.

8. A vehicle chassis according to claim 7, characterized in that: The suspension mechanisms corresponding to the first axle and the second axle include a front shock-absorbing spring assembly and a first connecting rod; the suspension mechanisms corresponding to the third axle and the fourth axle do not include a front shock-absorbing spring assembly and the first connecting rod, so as to shorten the distance between the second axle, the third axle and the fourth axle.

9. A vehicle chassis according to claim 5, characterized in that: The tires installed outside the wheel hub components in the axle body are small-diameter tires.

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