An engineering tractor chassis structure and a tractor

Abstract

This utility model discloses a chassis structure and tractor for an engineering tractor, belonging to the technical field of tractor vehicles. It includes a frame assembly, a front axle assembly, and a rear axle assembly. The front axle assembly is connected to the frame assembly via a front leaf spring suspension, and front wheels are mounted at both ends of the front axle assembly. The rear axle assembly is connected to the frame assembly via a rear leaf spring suspension, and rear wheels are mounted at both ends of the rear axle assembly. An engine is mounted on the frame assembly, and a fuel tank is mounted on the side of the frame assembly. This utility model can effectively withstand the enormous impacts and torques generated when the engineering tractor is driving under harsh road conditions, ensuring high reliability and a long service life for the entire vehicle.

Description

Technical Field

[0001] This utility model belongs to the field of tractor technology, and in particular relates to an engineering tractor chassis structure and tractor. Background Technology

[0002] Construction tractor units are indispensable equipment on construction sites and various other work environments, primarily used for transporting heavy materials and towing equipment in complex and harsh road conditions. However, construction site environments are typically rugged, with frequent mud, potholes, slopes, and gravel surfaces, placing high demands on the vehicle's passability and overall structure. Currently, many construction tractor units still have significant shortcomings in their load-bearing systems, such as weak chassis rigidity, poor suspension system adaptability, and limited shock absorption, leading to insufficient stability and uneven load distribution under harsh working conditions. This not only affects transportation efficiency but may also accelerate vehicle wear, shorten service life, and even pose operational safety hazards. Therefore, improving the adaptability and durability of the load-bearing system of construction tractor units is of great significance for ensuring both construction site operational efficiency and transportation safety. Summary of the Invention

[0003] In view of the problems existing in the prior art, this utility model provides an engineering tractor chassis structure and tractor, which can effectively withstand the huge impact and torque generated when the engineering tractor is driving under harsh road conditions, ensuring the high reliability and long service life of the whole vehicle.

[0004] This utility model is implemented as follows: on the one hand, it provides an engineering tractor chassis structure, including a frame assembly, a front axle assembly and a rear axle assembly. The front axle assembly is connected to the frame assembly through a front leaf spring suspension, and front wheels are installed at both ends of the front axle assembly. The rear axle assembly is connected to the frame assembly via a rear leaf spring suspension, and rear wheels are mounted at both ends of the rear axle assembly; An engine is mounted on the chassis assembly, and a fuel tank is mounted on the side of the chassis assembly.

[0005] Furthermore, the rated load capacity of the front axle assembly is 6.5 tons.

[0006] Furthermore, the frame assembly is a double-layer frame, consisting of two layers of steel plates stacked together, wherein the thickness of the first layer of steel plate is 8 mm and the thickness of the second layer of steel plate is 5 mm.

[0007] Furthermore, the pitch circle diameter of the driven gear in the main reducer of the rear axle assembly is 469 mm.

[0008] Furthermore, the front leaf spring suspension has 3 leaf springs, and the rear leaf spring suspension has 5 leaf springs.

[0009] Furthermore, the lower end face of the fuel tank is 631 mm above the ground.

[0010] Furthermore, the engine is an A12-440 horsepower engine.

[0011] Furthermore, both the front and rear wheels are 34kg reinforced wheels.

[0012] Furthermore, the capacity of the fuel tank is 400 liters.

[0013] This application also provides a tractor vehicle including the chassis structure described in any of the preceding claims.

[0014] The advantages and technical effects of this utility model are as follows: Due to the adoption of the above technical solution, it can effectively withstand the huge impact and torque generated when the engineering tractor is driving under harsh road conditions, thus ensuring the high reliability and long service life of the whole vehicle.

[0015] Both front and rear axles utilize leaf spring suspension systems, offering high load-bearing capacity and ease of inspection and replacement. This ensures the vehicle effectively supports the load during heavy starts, inclines, or traversing uneven surfaces, evenly distributing force to the frame and guaranteeing stability and maneuverability. The engine is directly mounted on the frame assembly, resulting in a compact structure and a short, direct power transmission path, which helps reduce energy loss and improve transmission efficiency. Simultaneously, the fuel tank is mounted on the side of the frame, effectively utilizing space and contributing to overall vehicle weight balance. Attached Figure Description

[0016] Figure 1 This is a top view of the chassis structure provided in this embodiment of the utility model; Figure 2 This is a front view of the chassis structure provided in an embodiment of this utility model.

[0017] In the diagram: 1. Chassis assembly; 2. Front axle assembly; 3. Rear axle assembly; 4. Front wheel; 5. Rear wheel; 6. Engine; 7. Fuel tank; 8. Front leaf spring suspension; 9. Rear leaf spring suspension. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0019] It should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] like Figure 1 and Figure 2 As shown, this application provides an engineering tractor chassis structure, including a frame assembly 1, a front axle assembly 2, and a rear axle assembly 3. The front axle assembly 2 is connected to the frame assembly 1 via a front leaf spring suspension 8, and front wheels 4 are mounted at both ends of the front axle assembly 2. The rear axle assembly 3 is connected to the frame assembly 1 via a rear leaf spring suspension 9, and rear wheels 5 are mounted at both ends of the rear axle assembly 3. An engine 6 is mounted on the frame assembly 1, and a fuel tank 7 is mounted on the side of the frame assembly 1.

[0021] Specifically, the rated load capacity of the front axle assembly 2 is 6.5 tons. The pitch circle diameter of the driven gear in the main reducer of the rear axle assembly 3 is 469 mm. The frame assembly 1 is a double-layer frame, composed of two layers of steel plates, with the first layer being 8 mm thick and the second layer being 5 mm thick. Both the front wheel 4 and the rear wheel 5 are 34 kg reinforced wheels. The structural design of the front axle assembly 2 and the rear axle assembly 3 together ensures strong load-bearing capacity and torque output; the double-layer thick steel plate frame significantly improves bending and torsional strength and overall durability; the reinforced wheels further enhance load-bearing and impact resistance, fully adapting to the needs of heavy-duty short-distance transportation and complex working conditions.

[0022] The front leaf spring suspension 8 has 3 leaf springs, and the rear leaf spring suspension 9 has 5 leaf springs. This suspension system uses a 3-leaf-front, 5-leaf-rear configuration, which allows the front axle to maintain good elasticity and shock absorption performance, which is beneficial for vehicle steering and ride smoothness. The rear axle, relying on more leaf springs, significantly improves load-bearing capacity and rigidity, effectively coping with heavy-load conditions. Overall, it takes into account load-bearing capacity, cushioning, and road adaptability, and is especially suitable for engineering vehicles to operate at high frequency and high load under harsh road conditions.

[0023] The lower end of the fuel tank 7 is 631 mm above the ground. Given the complex, bumpy, and rocky conditions of the construction site, the existing fuel tank 7 has insufficient ground clearance, making it prone to scraping against ground obstacles and posing a risk of damage and fuel leakage. Therefore, the installation position of the fuel tank 7 has been raised by 10 cm, significantly improving the chassis's passability, effectively preventing bottom impacts, enhancing adaptability to complex terrain, and also improving the safety and reliability of equipment operation.

[0024] The engine 6 is an A12-440 horsepower engine. The fuel tank 7 has a capacity of 400 liters. The tractor is used for short-distance transport of pipe piles on construction sites. Based on its characteristics of short operating distances but high load intensity, a 440 horsepower engine 6 was selected to ensure ample power reserves and easily handle heavy-load starts and complex road conditions. Simultaneously, the 400-liter fuel tank 7 ensures the necessary range for daily operations while effectively reducing the time cost of frequent refueling, demonstrating a practical design that balances efficiency and economy.

[0025] This application also provides a tractor vehicle including the chassis structure described in any of the preceding claims.

[0026] Thanks to the above technical solutions, the vehicle can effectively withstand the huge impacts and torques generated when the engineering tractor is driving in harsh road conditions, ensuring the high reliability and long service life of the whole vehicle.

[0027] Both front and rear axles utilize leaf spring suspension systems, offering high load-bearing capacity and ease of inspection and replacement. This ensures the vehicle effectively supports the load during heavy starts, inclines, or traversing uneven surfaces, evenly distributing force to the frame and guaranteeing stability and passability. The engine 6 is directly mounted on the frame assembly 1, featuring a compact structure and a short, direct power transmission path, which helps reduce energy loss and improve transmission efficiency. Meanwhile, the fuel tank 7 is mounted on the side of the frame, effectively utilizing space and contributing to overall vehicle weight balance.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A chassis structure for an engineering tractor, characterized in that, It includes a frame assembly, a front axle assembly and a rear axle assembly. The front axle assembly is connected to the frame assembly via a front leaf spring suspension. Front wheels are mounted on both ends of the front axle assembly. The rear axle assembly is connected to the frame assembly via a rear leaf spring suspension, and rear wheels are mounted at both ends of the rear axle assembly; An engine is mounted on the chassis assembly, and a fuel tank is mounted on the side of the chassis assembly.

2. The engineering tractor chassis structure according to claim 1, characterized in that, The rated load capacity of the front axle assembly is 6.5 tons.

3. The engineering tractor chassis structure according to claim 1, characterized in that, The frame assembly is a double-layer frame, consisting of two layers of steel plates stacked together, wherein the thickness of the first layer of steel plate is 8 mm and the thickness of the second layer of steel plate is 5 mm.

4. The engineering tractor chassis structure according to claim 1, characterized in that, The pitch circle diameter of the driven gear in the main reducer of the rear axle assembly is 469 mm.

5. The engineering tractor chassis structure according to claim 1, characterized in that, The front leaf spring suspension has 3 leaf springs, and the rear leaf spring suspension has 5 leaf springs.

6. The engineering tractor chassis structure according to claim 1, characterized in that, The lower end of the fuel tank is 631 mm above the ground.

7. The engineering tractor chassis structure according to claim 1, characterized in that, The engine used is an A12-440 horsepower engine.

8. The engineering tractor chassis structure according to claim 1, characterized in that, Both the front and rear wheels are 34kg reinforced wheels.

9. The engineering tractor chassis structure according to claim 1, characterized in that, The fuel tank has a capacity of 400 liters.

10. A tractor unit, characterized in that, The chassis structure includes any one of claims 1 to 9.

Images