Multi-gas-cylinder combined gas tractor chassis arrangement structure

Abstract

The utility model relates to a multi-gas cylinder combined gas tractor chassis arrangement structure, which belongs to the technical field of automobile chassis, and comprises a frame, a front axle and a drive axle are sequentially arranged on the frame from front to back, the front axle and the drive axle are linked through a transmission shaft, a cab is arranged on the frame above the front axle, a carriage is arranged behind the cab, and a gas cylinder is arranged in the carriage. Double back gas cylinders are arranged between the cab and the carriage, and double-side gas cylinders are arranged on the portion, below the front end of the carriage, of the frame and symmetrically arranged on the two sides of the frame. And the sliding rail saddle is arranged on the frame and corresponds to the driving axle up and down. The gap between the cab and the carriage is reasonably utilized by the double gas cylinders on the back, and the upper limit of the whole gas storage volume is improved by matching with the double-side gas cylinders below the front end of the carriage, so that the endurance mileage is effectively increased; the sliding rail saddle corresponds to the drive axle up and down, and the flexibility degree of the front turning radius of the vehicle is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle chassis, and specifically relates to a chassis layout structure of a gas tractor with a multi-cylinder combination. Background Art

[0002] A tractor is a special vehicle, and its cab and carriage are traction-connected through tools, mainly used for transporting large goods or semi-trailers. A tractor refers to a cab with driving ability in the front, used to tow one or more carriages without traction driving ability (i.e., trailers). This cab can be separated from the original carriage and tow other carriages, and at the same time, the carriage can also be towed by other cabs. The tractor provides forward pulling force for the trailer through its powerful driving force, but does not directly bear the downward weight of the trailer (in a semi-trailer connection, the rear axle of the tractor will bear a part of the weight of the trailer).

[0003] In view of the significant advantages in terms of economy, the market demand for natural gas heavy trucks has exploded, and more and more long-distance trunk transportation enterprises and fleets have begun to switch to natural gas tractors on a large scale. In this situation, how to meet the needs of different operation scenarios has become the key for major vehicle manufacturers to innovate and break through. At present, natural gas heavy trucks are restricted by regions, mainly because the distribution of gas filling stations is uneven. Therefore, long endurance remains the focus for natural gas heavy trucks to strengthen product power and break through homogeneous competition.

[0004] The chassis layout of gas vehicles is mainly based on a single gas cylinder or a double gas cylinder at the back. Due to the limited layout space on both sides of the frame, it is impossible to arrange gas cylinders on both sides at the same time. If a back-mounted gas cylinder and side-mounted gas cylinders are set at the same time, it will occupy a large space, thus affecting the front turning radius of the vehicle and resulting in insufficient flexibility. Content of the Utility Model

[0005] To solve the problem that adding the volume of the gas cylinder will cause insufficient flexibility of the front turning radius of the vehicle, the utility model provides a chassis layout structure of a gas tractor with a multi-cylinder combination.

[0006] The utility model is realized through the following technical solutions:

[0007] A chassis layout structure of a gas tractor with a multi-cylinder combination includes a frame. An axle and a drive axle are successively arranged on the frame from front to back. The axle and the drive axle are linked by a drive shaft. A cab is installed on the frame above the axle. A carriage is arranged behind the cab. A double gas cylinder at the back is arranged between the cab and the carriage. Double side-mounted gas cylinders are arranged on the frame below the front end of the carriage. The double side-mounted gas cylinders are symmetrically arranged on both sides of the frame; it also includes a slide rail saddle, which is installed on the frame and corresponds to the drive axle up and down.

[0008] The double gas cylinders at the back make rational use of the space between the cab and the carriage. At the same time, the double-sided gas cylinders below the front end of the carriage are used to increase the upper limit of the entire gas storage volume, effectively increasing the cruising range. The sliding rail saddle corresponds to the drive axle up and down, effectively improving the flexibility of the front turning radius of the vehicle.

[0009] A further improvement of the present utility model is that the above-mentioned frame includes a left longitudinal beam and a right longitudinal beam arranged in parallel; it also includes a wing-shaped beam, a back-to-back cross beam, a single cross beam, and a casting cross beam that are arranged in sequence from front to back and connect the left longitudinal beam and the right longitudinal beam.

[0010] A further improvement of the present utility model is that a gas engine is centrally provided at the front end of the above-mentioned frame. A cooling system is provided in front of the gas engine. The rear of the gas engine is connected to a gearbox installed on the frame, and the output end of the gearbox is linked with the transmission shaft.

[0011] A further improvement of the present utility model is that a front lower protection assembly is also provided at the front end of the above-mentioned frame.

[0012] A further improvement of the present utility model is that a four-airbag suspension for connecting the drive axle is provided at the rear end of the above-mentioned frame.

[0013] A further improvement of the present utility model is that a rear wheel cover and a bracket device corresponding to the wheels at both ends of the drive axle are provided at the rear end of the above-mentioned frame, and a rear axle stabilizer bar bracket is connected to the rear wheel cover and the bracket device.

[0014] A further improvement of the present utility model is that a left fender and an oil bath air filter assembly are successively provided from front to back on the left side of the above-mentioned frame. The left fender is installed on the cab and is arranged corresponding to the wheels at the end of the front axle up and down. The oil bath air filter assembly is installed at the rear of the left fender.

[0015] A further improvement of the present utility model is that a single-layer battery box installed on the frame is provided between the oil bath air filter assembly and the double-sided gas cylinders, and front and rear axle air storage cylinders are installed at the bottom of the single-layer battery box.

[0016] A further improvement of the present utility model is that a right fender and a post-treatment large package are successively provided from front to back on the right side of the above-mentioned frame. The right fender is installed on the cab and is arranged corresponding to the wheels at the end of the front axle up and down. The post-treatment large package is installed at the rear of the right fender.

[0017] A further improvement of the present utility model is that an independent warm air fuel tank installed on the frame is provided between the post-treatment large package and the double-sided gas cylinders.

[0018] As can be seen from the above technical solutions, the beneficial effects of the present utility model are as follows: The double gas cylinders on the back make rational use of the space between the cab and the carriage. At the same time, the double side-mounted gas cylinders under the front end of the carriage improve the upper limit of the entire gas storage volume, effectively increasing the cruising range; the sliding rail saddle corresponds to the drive axle up and down, effectively improving the flexibility of the front turning radius of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of the specific embodiment of the present utility model.

[0021] Figure 2 It is a top view of the specific embodiment of the present utility model.

[0022] Figure 3 It is a bottom view of the specific embodiment of the present utility model.

[0023] Figure 4 It is a schematic diagram of the vehicle frame of the specific embodiment of the present utility model.

[0024] In the drawings: 1. Double gas cylinders on the back; 2. Double side-mounted gas cylinders; 3. Sliding saddle; 4. Vehicle frame; 5. Drive axle; 6. Single-layer battery box; 7. Front and rear axle air storage cylinders; 8. Oil bath air filter assembly; 9. Front axle; 10. Trailer spiral tube installation mechanism; 11. Walkway board; 12. Rear wheel cover and support device; 13. Integrated front lower protection assembly; 14. Aftertreatment package; 15. Independent warm air fuel tank; 16. Parking air storage cylinder; 17. Rear axle stabilizer bar bracket; 18. Four-airbag suspension; 19. Drive shaft; 20. Gearbox; 21. Left fender; 22. Gas engine; 23. Steering system; 24. Right fender; 25. Right longitudinal beam; 26. Left longitudinal beam; 27. Yuanbao beam; 28. Back-to-back cross beam; 29. Single cross beam; 30. Casting cross beam; 31. Cooling system. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to make the objectives, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the present utility model will be clearly and completely described below in conjunction with the drawings in the specific embodiments of the present utility model. Obviously, the embodiments described below are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this patent.

[0026] As shown in the attached drawings, a chassis layout structure of a gas tractor with a multi-cylinder combination includes a frame 4, and the frame 4 includes a left longitudinal beam 26 and a right longitudinal beam 25 arranged in parallel; it also includes a yuanbao beam 27, a back-to-back cross beam 28, a single cross beam 29 and a casting cross beam 30 which are arranged in sequence from front to back and connect the left longitudinal beam 26 and the right longitudinal beam 25. A front axle 9 and a drive axle 5 are successively arranged on the frame 4 from front to back, and the front axle 9 and the drive axle 5 are linked by a transmission shaft 19; a gas engine 22 is arranged in the middle at the front end of the frame 4, a cooling system 31 is arranged in front of the gas engine 22, and the rear part of the gas engine 22 is connected with a gearbox 20 installed on the frame 4, and the output end of the gearbox 20 is linked with the transmission shaft 19.

[0027] A front lower protection assembly is also arranged at the front end of the frame 4.

[0028] A four-airbag suspension 18 connecting the drive axle 5 is arranged at the rear end of the frame 4.

[0029] A rear wheel cover and bracket device 12 corresponding to the wheels at both ends of the drive axle 5 up and down is arranged at the rear end of the frame 4, and a rear axle stabilizer bar bracket 17 is connected to the rear wheel cover and bracket device 12.

[0030] A cab is installed on the frame 4 above the front axle 9, a carriage is arranged behind the cab, a back double gas cylinder 1 is arranged between the cab and the carriage, double-sided gas cylinders 2 are arranged on the frame 4 below the front end of the carriage, and the double-sided gas cylinders 2 are symmetrically arranged on both sides of the frame 4; it also includes a slide rail saddle which is installed on the frame 4 and corresponds to the drive axle 5 up and down.

[0031] A trailer spiral tube installation mechanism 10 is installed at the rear part of the back double gas cylinder 1 to facilitate the fixation of the gas circuit and wiring harness between the cab and the carriage.

[0032] A left fender 21 and an oil bath air filter assembly 8 are successively arranged on the left side of the frame 4 from front to back. The left fender 21 is installed on the cab and corresponds to the wheel at the end of the front axle 9 up and down, and the oil bath air filter assembly 8 is installed at the rear part of the left fender 21. A single-layer battery box 6 installed on the frame 4 is arranged between the oil bath air filter assembly 8 and the double-sided gas cylinders 2, and front and rear axle air storage cylinders 7 are installed at the bottom of the single-layer battery box 6.

[0033] On the right side of the vehicle frame 4, a right fender 24 and a large after-treatment package 14 are successively arranged from front to back. The right fender 24 is installed on the cab and is arranged vertically corresponding to the wheels at the end of the front axle 9. The large after-treatment package 14 is installed at the rear of the right fender 24. An independent warm air fuel tank 15 installed on the vehicle frame 4 is provided between the large after-treatment package 14 and the double-sided cylinders 2. A parking air storage cylinder 16 is further provided behind the independent warm air fuel tank, and the parking air storage cylinder 16 is arranged inside the double-sided cylinders 2.

[0034] The gas tractor chassis layout structure of a multi-cylinder combination described in the present utility model has the following advantages:

[0035] 1. The vehicle frame of the chassis layout structure improves the layout space on both left and right sides by lengthening the wheelbase. The vehicle frame is successively provided with a Yuanbao beam, a back-to-back cross beam, a single cross beam, and a casting cross beam from front to back along the vertical longitudinal beams, ensuring the torsional stiffness of the vehicle frame and bearing the longitudinal load. The cross beams are connected to the longitudinal beams, enabling the vehicle frame to have sufficient strength and stiffness to withstand the loads of the upper back double cylinders and the side-mounted double cylinders as well as the impact transmitted from the wheels, ensuring the reliability of the vehicle.

[0036] 2. The chassis layout structure adopts the layout structure of a back double cylinder and double side-mounted cylinders, increasing the volume of the LNG cylinders to meet the demand for the ultra-long endurance mileage of the whole vehicle; at the same time, the symmetrical distribution design of the double side-mounted cylinders on the left and right solves the problem of the vehicle's center of gravity offset.

[0037] 3. The chassis layout structure adopts a sliding saddle mechanism to effectively solve the influence of the back double cylinders on the front turning radius of the tractor-trailer, meeting the needs of different customer groups for different trailers and avoiding the risk of uneven load distribution caused by the after-sales modification of the saddle.

[0038] 4. The chassis layout structure adopts an oil-bath air filter assembly, which has the advantages of low noise, large dust capacity, and small resistance compared with the traditional air filter, can effectively extend the service life of the engine, and break through the regional limitations of natural gas heavy truck products.

[0039] 5. The chassis layout structure adds the installation position of an independent warm air fuel tank, and the whole vehicle has the function of matching an independent warm air system, effectively solving the problems of low-temperature cold start of the engine and parking heating.

[0040] 6. The chassis layout structure adopts an integrated design concept in many places, thereby reducing the number and complexity of parts, achieving the purpose of lightweight, improving the assembly efficiency, and reducing the manufacturing cost. For example, the integrated front lower protection assembly integrates the headlight bracket, the lifting motor, the left and right boarding pedal brackets, the front lower protection, etc. It not only saves the installation space on both sides of the vehicle frame, but also improves the offline sub-assembly and online assembly beats by reducing the number of parts and optimizing the connection, and the production efficiency is increased by more than 50%.

[0041] 7. The chassis layout structure arranges the front and rear axle brake air reservoirs under the single-layer battery box, making rational use of the space under the battery box, no longer sacrificing the space on both sides of the frame, and at the same time effectively shortening the length of the brake pipeline and improving the braking efficiency.

[0042] 8. The chassis layout structure is simple, the chassis components are reasonably arranged, the space utilization rate is high, the maintenance and repair are convenient, and it is easy to assemble, and can achieve integration and modularization, which is suitable for popularization.

[0043] In this specification, each embodiment is described in a progressive manner. The key points of each embodiment are the differences from other embodiments. For the same and similar parts between the embodiments, reference can be made to each other.

[0044] The terms "upper", "lower", "outer side", "inner side", etc. in the specification, claims and drawings of the present utility model, if any, are used to distinguish the relative relationship in position and do not need to be given a qualitative definition. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present utility model described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A chassis arrangement structure of a gas tractor with multiple gas cylinders, comprising a frame (4), on which a front axle (9) and a drive axle (5) are arranged in sequence from front to rear, the front axle (9) and the drive axle (5) are linked via a transmission shaft (19), a cab is installed on the frame (4) above the front axle (9), and a carriage is arranged behind the cab, characterized in that: A back double gas cylinder (1) is arranged between the cab and the carriage, and a frame (4) below the front end of the carriage is provided with double side gas cylinders (2), and the double side gas cylinders (2) are symmetrically arranged on both sides of the frame (4); and a slide rail saddle is also included, and the slide rail saddle is installed on the frame (4) and corresponds to the driving axle (5) up and down.

2. The chassis arrangement structure of a gas tractor with multiple gas cylinders according to claim 1 is characterized in that: The vehicle frame (4) comprises a left longitudinal beam (26) and a right longitudinal beam (25) arranged in parallel; and further comprises a Yuanbao beam (27), a back-to-back cross beam (28), a single cross beam (29) and a cast cross beam (30) which are arranged in sequence from front to back and connect the left longitudinal beam (26) and the right longitudinal beam (25).

3. The chassis arrangement structure of a gas tractor with multiple gas cylinders as claimed in claim 2 is characterized in that: A gas engine (22) is centrally disposed at the front end of the vehicle frame (4), a cooling system (31) is disposed in front of the gas engine (22), and a gearbox (20) mounted on the vehicle frame (4) is connected to the rear of the gas engine (22), the output end of the gearbox (20) being linked to the transmission shaft (19).

4. The chassis arrangement structure of a gas tractor with multiple gas cylinders as claimed in claim 2 is characterized in that: The front end of the vehicle frame (4) is also provided with a front lower protection assembly.

5. The chassis arrangement structure of a gas tractor with multiple gas cylinders as claimed in claim 2 is characterized in that: A four-airbag suspension (18) connected to the drive axle (5) is provided at the rear end of the vehicle frame (4).

6. The chassis arrangement structure of a gas tractor with multiple gas cylinders as claimed in claim 2 is characterized in that: The rear end of the vehicle frame (4) is provided with a rear wheel cover and a bracket device (12) corresponding to the wheels at both ends of the driving axle (5) in an upper and lower manner, and a rear axle stabilizer bar bracket (17) is connected to the rear wheel cover and the bracket device (12).

7. A chassis arrangement structure of a gas tractor with multiple gas cylinders according to any one of claims 1 to 6, characterized in that: The left side of the vehicle frame (4) is provided with a left fender (21) and an oil bath type air filter assembly (8) in sequence from front to rear. The left fender (21) is mounted on the cab and is arranged vertically corresponding to the wheel at the end of the front axle (9). The oil bath type air filter assembly (8) is mounted on the rear of the left fender (21).

8. The chassis arrangement structure of a gas tractor with multiple gas cylinders as claimed in claim 7 is characterized in that: A single-layer battery box (6) mounted on the vehicle frame (4) is provided between the oil bath air filter assembly (8) and the double-side gas cylinders (2), and front and rear axle gas cylinders (7) are installed at the bottom of the single-layer battery box (6).

9. A chassis arrangement structure of a gas tractor with multiple gas cylinders according to any one of claims 1 to 6, characterized in that: The right side of the vehicle frame (4) is provided with a right fender (24) and a post-processing large package (14) in sequence from front to rear. The right fender (24) is mounted on the cab and is arranged in vertical correspondence with the wheel at the end of the front axle (9). The post-processing large package (14) is mounted on the rear of the right fender (24).

10. The chassis arrangement structure of a gas tractor with multiple gas cylinders as claimed in claim 9, characterized in that: An independent heating oil tank (15) mounted on the vehicle frame (4) is provided between the post-processing large bag (14) and the double-side gas cylinders (2).

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