CN210555114U - Light commercial vehicle chassis - Google Patents
Light commercial vehicle chassis Download PDFInfo
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- CN210555114U CN210555114U CN201920294013.2U CN201920294013U CN210555114U CN 210555114 U CN210555114 U CN 210555114U CN 201920294013 U CN201920294013 U CN 201920294013U CN 210555114 U CN210555114 U CN 210555114U
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Abstract
The utility model discloses use the high performance double fork arm horizontal leaf spring independent suspension front axle that bears the weight of lightweight wheel limit of new construction height for the first time on light-duty commercial vehicle chassis, use the NDA lightweight rear axle that the height bore low dead weight for the first time, adopt simultaneously to fall make an uproar, high vibration isolation rate, the novel variable cross-section becomes rigidity monolithic leaf spring rear suspension device of exempting from to maintain, adopted the mixed type bush of exempting from to maintain leaf spring elasticity, greatly improved the travelling comfort of taking. The chassis of the light commercial vehicle is optimally designed in terms of performance, quality and cost, and ensures that all assemblies of the chassis are coordinated in operation, convenient to operate, superior in performance and good in maintenance proximity.
Description
Technical Field
The utility model relates to a chassis, specifically light commercial vehicle chassis that is specific belongs to vehicle chassis design technical field.
Background
The chassis of a motor vehicle is generally composed of a drive train, a steering train, a braking train, chassis accessories and the like. The chassis is used for supporting and mounting the automobile engine and all parts and assemblies thereof to form the integral shape of the automobile, and receives the power of the engine to enable the automobile to move and ensure the normal running. With the rapid development of national economy, the demand structure and market division of light commercial vehicle chassis products become thinner and thinner, but at present, no chassis design suitable for products of our company exists.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a light-duty commercial vehicle chassis.
The patent of the utility model discloses a realize through following technical scheme:
a chassis of a light commercial vehicle comprises a chassis body and a frame assembly arranged on the chassis body; the frame assembly is of a side beam type structure and mainly comprises two longitudinal beams and five cross beams; the method is characterized in that: the front axle of the independent suspension of the double-wishbone transverse plate spring is connected with the side surface and the lower wing surface of the frame longitudinal beam; the NDA lightweight rear axle is connected to the rear single leaf spring through a bracket, and the rear single leaf spring is connected to the side face of the frame longitudinal beam through the bracket;
the engine power assembly with the clutch and the transmission is connected with the frame assembly through a bracket and an engine suspension cross beam; one end of the transmission shaft assembly is connected with a transmission output shaft flange, the other end of the transmission shaft assembly is connected to a driving gear flange of the rear axle assembly, and the middle part of the transmission shaft assembly is connected with a transmission shaft middle supporting beam through a bracket; the wheel and tire assembly is attached to the front and rear axle hubs.
The utility model discloses the technical scheme who further injects does:
furthermore, the front axle of the double-fork-arm transverse plate spring independent suspension is fastened on two sides of the frame longitudinal beam through bolts.
Furthermore, the front axle of the double-fork-arm transverse plate spring independent suspension is of a left-right symmetrical structure and comprises a cross beam, fork arm mounting frames and shock absorber connecting supports, wherein the fork arm mounting frames and the shock absorber connecting supports are arranged at two side ends of the cross beam; the fork arm mounting rack forms a strip-shaped cavity from top to bottom and is respectively positioned at the left and right outer sides of the side end of the cross beam, and opposite bolt holes are respectively formed according to the upper end and the lower end of the two cavity walls of the fork arm mounting rack; the shock absorber connecting support is positioned in the center of the side end of the cross beam and forms a cavity channel with an opening at the upper end, the upper ends of the two cavity walls are respectively provided with an upward extending lifting lug, and the lifting lugs are provided with through holes which are correspondingly inserted with the central shafts of the bushings on the left shock absorber assembly and the right shock absorber assembly.
Furthermore, the NDA lightweight rear axle is connected with a rear single leaf spring through a U-shaped bolt, and the rear single leaf spring is connected with the frame longitudinal beam through a front support and a rear support.
Furthermore, NDA lightweight rear axle mainly comprises braking pincers, brake disc, rear plate spring seat, semi-axis sleeve pipe, rear axle housing, main reducer, semi-axis, flange, and main reducer assembles in the rear axle housing, and the semi-axis sleeve pipe assembles in rear axle housing both sides, all is equipped with the rear plate spring seat on every semi-axis sleeve pipe, and the one end of semi-axis passes semi-axis sleeve pipe transmission and connects main reducer, and the other end assembly braking pincers, brake disc and the flange of semi-axis.
The utility model has the advantages that:
firstly, apply the high performance double fork arm horizontal leaf spring independent suspension front axle that new construction height bore light-weight wheel limit on light commercial vehicle chassis for the first time. The novel-structure high-performance double-fork-arm transverse plate spring front axle with the brand-new design has the advantages of excellent high bearing performance, smoothness, anti-roll performance, simple structure, low transmission rate, low cost and the like, can effectively improve the smoothness and the operation stability of the whole automobile, and ensures the bearing performance and the reliability of the whole automobile. The transverse plate spring is of a gradient structure made of NHS3 spring steel plate materials, and the bearing capacity of the front axle is up to 1900 kg; the transverse leaf spring has the function of a transverse stabilizer bar. The swing arm bushing is made of various materials such as rubber M170, nylon, modified nylon and No. 20 precision tube, and has the performances of high mechanical strength, noise reduction, self-lubrication, wear resistance, rust prevention and the like; with the inflatable dual-action cartridge shock absorber, the compression resistance 730N and the tension resistance 1860N are achieved at a speed of 0.52 m/s. Working stroke: 89 mm; and a plastic dust cover is adopted, so that the self weight is reduced.
And secondly, the NDA lightweight rear axle with high bearing capacity and low dead weight is applied for the first time. The NDA rear axle adopts a semi-floating half-axle structure, an integral differential mechanism and a traveling and parking integrated brake caliper, has the advantages of compact structure, light weight and the like, and has a self-clearance adjusting function; the wheel limit bearing capacity is strong, and the noise reduction 3 decibels, axle housing only adopts 7.15mm wall thickness simultaneously. Compared with the traditional bridge, the self-weight of the NDA is reduced by 24% by adopting a small-diameter gear pair and a reducer assembly; the fuel economy is improved, and the transmission efficiency is improved by 0.5%.
Thirdly, a novel variable-cross-section variable-rigidity single-plate spring rear suspension device with noise reduction, high vibration isolation rate and maintenance-free is adopted, and a maintenance-free plate spring elastic mixed bushing is adopted, so that the riding comfort is greatly improved.
Fourthly, the chassis has high maneuverability. The chassis development of the model applies K & C testing, DOE and chassis adjusting and correcting technologies. Theoretical analysis and real vehicle evaluation are combined, and R & H performance of the whole vehicle is improved through optimal arrangement of hard points of the chassis and matching of attributes of chassis parts.
The following test data:
1) the total operating stability score is more than 87 points (QC/T480), the subjective evaluation is more than or equal to 7 points (SAE), and the performance is far superior to that of domestic mainstream commercial vehicles. The steady state limit lateral acceleration is more than or equal to 6m/s2(ii) a The central yaw lag of 80km/h is less than or equal to 0.15 s.
2) The brake efficiency is high, the stability is good, the vehicle speed is 60km/h for emergency braking, the brake distance is less than or equal to 20m, and the transverse offset is less than or equal to 0.5 m.
The chassis of the light commercial vehicle is optimally designed in terms of performance, quality and cost, and ensures that all assemblies of the chassis are coordinated in operation, convenient to operate, superior in performance and good in maintenance proximity.
Drawings
FIG. 1 is a front view of a light commercial vehicle chassis of the present invention;
FIG. 2 is a top view of the light commercial vehicle chassis of the present invention;
FIG. 3 is a view showing the connection between a front axle and a frame of a horizontally disposed plate spring;
FIG. 4 is a connection view of the rear axle to the frame;
FIG. 5 is a block diagram of the front and rear of an NDA rear axle;
fig. 6 is a schematic view of a front axle with a transverse leaf spring.
In the figure: 1-a chassis body; 2-a frame assembly; 3, the engine is provided with a clutch and a transmission power assembly; 4-a transmission shaft assembly; 5-rear single leaf spring; 6-a front axle of a double-fork-arm transverse plate spring independent suspension; 7-a rear axle assembly; 8-wheel and tire assembly; 9. 10, 11, 12, 13-frame cross beam (12 is also called transmission shaft middle supporting cross beam); 14. 15-frame rail; 16-an engine mount beam; 17-a connecting bolt; 18-leaf spring rear bracket; 19-leaf spring front support; 20-U-bolt; 21-a brake caliper; 22-a brake disc; 23-rear leaf spring seat; 24-half shaft sleeve; 25-rear axle housing; 26-a main reducer; 27-half shaft; 28-flange, 29-front beam assembly; 30-a wheel-rim assembly; 31-a damper assembly; 32-an upper yoke assembly; 33-a lower yoke assembly; 34-a single leaf spring; 35-upper elastic cushion block; 36-lower resilient pad; 37-elastic cushion seat; 38-an upper bushing; 39-lower bushing.
Detailed Description
In order to make the utility model discloses technical means, creation characteristic, achievement purpose and efficiency that realize are easily known, now combine the figure to further explain the utility model discloses how the patent is implemented:
a chassis of a light commercial vehicle comprises a chassis body 1 and a frame assembly 2 arranged on the chassis body 1; the frame assembly 2 is of an edge beam type structure and mainly comprises two longitudinal beams 14 and 15 and five cross beams 9, 10, 11, 12 and 13; the front axle 6 of the double-wishbone transverse plate spring independent suspension is connected with the side surfaces and the lower wing surfaces of the frame longitudinal beams 14 and 15; the NDA lightweight rear axle is connected to the rear single leaf spring 5 through a bracket, and the rear single leaf spring 5 is connected to the side faces of the frame longitudinal beams 14 and 15 through the bracket;
the engine power assembly 3 with a clutch and a transmission is connected with the frame assembly 2 through a bracket and an engine suspension cross beam 16; one end of the transmission shaft assembly 4 is connected with a transmission output shaft flange, the other end of the transmission shaft assembly 4 is connected to a driving gear flange of the rear axle assembly 7, and the middle part of the transmission shaft assembly 4 is connected with a transmission shaft middle supporting beam 12 through a bracket; a wheel and tire assembly 8 is attached to the front and rear axle hubs. The front axle 6 of the double-wishbone transverse leaf spring independent suspension is fastened to both sides of the frame rails 14, 15 by bolts 17.
The structure and implementation of the device are shown in fig. 3 and 6, and the device comprises a front beam assembly 29, two wheel edge assemblies 30 and two shock absorber assemblies 31, wherein the wheel edge assemblies 30 and the shock absorber assemblies 31 are respectively and symmetrically arranged outside two sides of the front beam assembly 29; the front axle device is a single plate spring transverse double-fork arm type front axle structure, and further comprises two upper fork arm assemblies 32, two lower fork arm assemblies 33 and a single plate spring 34, wherein the plate spring is an elastic element of the front axle device, two side ends of the front beam assembly 29 are symmetrically provided with the upper fork arm assembly 32 and the lower fork arm assembly 33, the upper fork arm assembly 32 and the lower fork arm assembly 33 are front axle device guide mechanisms, one ends of the upper fork arm assembly and the lower fork arm assembly are respectively and correspondingly connected with the side end of the front beam assembly 29, the other ends of the upper fork arm assembly and the lower fork arm assembly are respectively and correspondingly connected with the upper end and the lower end of the wheel edge assembly 30, the shock absorber assembly 31 is connected with the center of the side end of the front beam assembly 29 through an upper bushing 38, and the lower bushing 39 of the shock absorber assembly 31 is connected with the; a transverse single plate spring 34 is arranged in the inner cavity of the front beam assembly 29; fixing clamp is installed additional on the left and right sides of monolithic leaf spring 34, and fixing clamp includes elastic cushion block 35, lower elastic cushion block 36, and elastic cushion seat 37 is installed additional to monolithic leaf spring 34 both sides end.
The NDA lightweight rear axle is connected with a rear single leaf spring 5 through a U-shaped bolt 20, and the rear single leaf spring 5 is connected with the frame longitudinal beams 14 and 15 through front and rear supports 19 and 18.
The NDA lightweight rear axle mainly comprises a brake caliper 21, a brake disc 22, a rear plate spring seat 23, axle sleeves 24, a rear axle housing 25, a main speed reducer 26, half shafts 27 and flanges 28, wherein the main speed reducer 26 is assembled in the rear axle housing 25, the axle sleeves 24 are assembled on two sides of the rear axle housing 25, each axle sleeve 24 is provided with the rear plate spring seat 23, one end of each half shaft 27 penetrates through the axle sleeve 24 to be in transmission connection with the main speed reducer 26, and the other end of each half shaft 27 is assembled with the brake caliper 21, the brake disc 22 and the flanges 28.
Claims (5)
1. A light commercial vehicle chassis comprises a chassis body (1) and a frame assembly (2) arranged on the chassis body (1); the frame assembly (2) adopts a side beam type structure and is mainly formed by combining two longitudinal beams (14, 15) and five cross beams (9, 10, 11, 12, 13); the method is characterized in that: the front axle (6) of the double-fork-arm transverse leaf spring independent suspension is connected with the side surfaces and the lower wing surfaces of the frame longitudinal beams (14, 15); the NDA lightweight rear axle is connected to the rear single leaf spring (5) through a bracket, and the rear single leaf spring (5) is connected to the side faces of the frame longitudinal beams (14, 15) through the bracket;
the engine power assembly (3) with a clutch and a transmission is connected with the frame assembly (2) through a bracket and an engine suspension cross beam (16); one end of the transmission shaft assembly (4) is connected with a transmission output shaft flange, the other end of the transmission shaft assembly is connected to a driving gear flange of the rear axle assembly (7), and the middle part of the transmission shaft assembly (4) is connected with a transmission shaft middle supporting beam (12) through a bracket; a wheel and tire assembly (8) is attached to the front and rear axle hubs.
2. The light commercial vehicle chassis of claim 1, wherein: a front axle (6) of the double-wishbone transverse leaf spring independent suspension is fastened on two sides of frame longitudinal beams (14, 15) through bolts (17).
3. The light commercial vehicle chassis of claim 2, wherein: the double-fork-arm transverse plate spring independent suspension front axle (6) is of a left-right symmetrical structure and comprises a cross beam, fork arm mounting frames and shock absorber connecting supports, wherein the fork arm mounting frames and the shock absorber connecting supports are arranged at two side ends of the cross beam; the fork arm mounting rack forms a strip-shaped cavity from top to bottom and is respectively positioned at the left and right outer sides of the side end of the cross beam, and opposite bolt holes are respectively formed according to the upper end and the lower end of the two cavity walls of the fork arm mounting rack; the shock absorber connecting support is positioned in the center of the side end of the cross beam and forms a cavity channel with an opening at the upper end, the upper ends of the two cavity walls are respectively provided with an upward extending lifting lug, and the lifting lugs are provided with through holes which are correspondingly inserted with the central shafts of the bushings on the left shock absorber assembly and the right shock absorber assembly.
4. The light commercial vehicle chassis of claim 1, wherein: the NDA lightweight rear axle is connected with a rear single leaf spring (5) through a U-shaped bolt (20), and the rear single leaf spring (5) is connected with frame longitudinal beams (14, 15) through front and rear brackets (19, 18).
5. The light commercial vehicle chassis of claim 4, wherein: NDA lightweight rear axle mainly comprises brake caliper (21), brake disc (22), back plate spring seat (23), semi-axis sleeve pipe (24), rear axle housing (25), main reducer (26), semi-axis (27), flange (28) are constituteed, main reducer (26) assemble in rear axle housing (25), semi-axis sleeve pipe (24) assemble in rear axle housing (25) both sides, all be equipped with back plate spring seat (23) on every semi-axis sleeve pipe (24), semi-axis sleeve pipe (24) transmission connection main reducer (26) are passed to the one end of semi-axis (27), the other end assembly brake caliper (21) of semi-axis (27), brake disc (22) and flange (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920294013.2U CN210555114U (en) | 2019-03-08 | 2019-03-08 | Light commercial vehicle chassis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920294013.2U CN210555114U (en) | 2019-03-08 | 2019-03-08 | Light commercial vehicle chassis |
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| Publication Number | Publication Date |
|---|---|
| CN210555114U true CN210555114U (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920294013.2U Active CN210555114U (en) | 2019-03-08 | 2019-03-08 | Light commercial vehicle chassis |
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| CN (1) | CN210555114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114435476A (en) * | 2022-02-11 | 2022-05-06 | 寿光市顺凯机械有限公司 | Anti-seismic anti-fracture commercial vehicle safety frame |
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2019
- 2019-03-08 CN CN201920294013.2U patent/CN210555114U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114435476A (en) * | 2022-02-11 | 2022-05-06 | 寿光市顺凯机械有限公司 | Anti-seismic anti-fracture commercial vehicle safety frame |
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