Engineering machinery

Abstract

The utility model provides engineering machinery which comprises a frame (1), a cab (2), an engine cover (3), an engine, a fuel tank (4) and a tail gas treatment liquid tank (5), the frame is provided with a front end part (11) and a rear end part (12), and the cab is arranged above the frame and mounted to the front end part; the engine is located in an engine compartment defined by an engine hood (3), and both the engine hood and the engine are mounted to the rear end portion above the frame; wherein the fuel tank is mounted to the rear end part of the frame below the engine hood; and the tail gas treatment liquid tank is mounted on one side of the frame below the cab. For the engineering machinery, an operator can fill the fuel tank and the tail gas treatment liquid tank by standing on the ground, so that not only is the convenience of daily filling of the fuel and the tail gas treatment liquid improved, but also the filling efficiency is improved, and the fuel tank and the tail gas treatment liquid tank can be more conveniently overhauled.

Description

Technical Field

[0001] The utility model relates to the field of engineering machinery, in particular to an engineering machinery with an improved overall machine layout, such as a grader, a loader and the like. Background Art

[0002] In existing construction machinery such as graders and loaders, fuel tanks and DEF tanks (diesel exhaust fluid tanks, also known as urea tanks) are generally arranged at a higher position above the frame, which makes fuel and urea filling inconvenient and inefficient.

[0003] In addition, for construction machinery, such as graders and loaders, the battery is currently generally placed outside the engine compartment. When the construction machinery is working in high-altitude cold areas or in cold winter weather, it is difficult to ensure that the battery is at a suitable working temperature, which will cause the construction machinery to be difficult to start.

[0004] In addition, in order to meet the regulatory requirements of some countries, construction machinery such as graders and loaders need to be equipped with auxiliary steering systems to ensure that the vehicle can turn when the engine loses power. The traditional method is to add a hydraulic accumulator, but this method is complex and costly. Utility Model Content

[0005] In order to overcome at least one aspect of the above problems, the utility model provides an engineering machinery with an improved layout, which is convenient not only for filling the fuel but also for filling the urea tank.

[0006] To this end, the utility model provides an engineering machinery, which includes a frame, a cab, a hood, an engine, a fuel tank and an exhaust gas treatment liquid tank, wherein the frame has a front end portion and a rear end portion, the cab is mounted to the front end portion above the frame; the engine is located in an engine compartment defined by the hood, and the hood and the engine are both mounted to the rear end portion above the frame; wherein the fuel tank is mounted to the rear end portion of the frame below the hood; and the exhaust gas treatment liquid tank is mounted to one side of the frame below the cab.

[0007] In the above scheme, by arranging the fuel tank and the exhaust gas treatment liquid tank in such a way that the fuel tank is installed on the lower side of the frame at the rear end part, and the exhaust gas treatment liquid tank is visibly installed on the side below the cab at the front end part of the frame, the operator can fill the fuel tank and the exhaust gas treatment liquid tank while standing on the ground, thereby improving the convenience and efficiency of filling. In addition, arranging the fuel tank at the rear end part of the frame can also play the role of counterweight, thereby increasing its compaction force and stability, and improving construction efficiency and quality.

[0008] According to a preferred embodiment of the present invention, the construction machinery further comprises a battery, wherein the battery is arranged in the engine compartment defined by the engine hood. Specifically, the battery is installed in the engine compartment via a battery bracket, and the battery bracket is, for example, fixedly connected to the upper side of the vehicle frame. The battery is a key component of the construction machinery, and the battery can be used, for example, to supply power to on-board electrical equipment, or to drive a starter motor to start the engine, etc. Therefore, by arranging the battery in this way, in cold weather, the heat generated by the engine when it is working can be used to ensure that the battery is at a suitable temperature.

[0009] According to a preferred embodiment of the present invention, the engineering machinery further comprises an auxiliary hydraulic steering system, a gearbox and a hydraulic gear pump, wherein the hydraulic gear pump is connected to the output shaft of the gearbox, and the hydraulic gear pump constitutes a power source of the auxiliary hydraulic steering system. Through this auxiliary hydraulic steering system, when the engine loses power, the wheels drive the hydraulic gear pump to rotate through the output shaft of the gearbox, thereby providing power for the auxiliary hydraulic steering system to achieve emergency auxiliary steering.

[0010] In one solution of the utility model, the gearbox and the hydraulic gear pump are both arranged in the engine compartment.

[0011] In one embodiment of the utility model, the engineering machine further comprises a steering wheel and a steering wheel steering gear for controlling the rotation of the steering wheel, and the hydraulic gear pump is provided with a pressure valve, and the pressure valve is used to control the fluid communication between the hydraulic gear pump and the steering wheel steering gear. When the hydraulic gear pump builds up oil pressure due to the rotation, the pressure valve automatically opens the fluid communication between the hydraulic gear pump and the steering wheel steering gear, so that the hydraulic gear pump provides hydraulic oil with a certain pressure to the steering wheel steering gear, drives the steering wheel to rotate, and thus realizes emergency steering.

[0012] In one embodiment of the present invention, the engineering machinery may be a motor grader.

[0013] In one embodiment of the present invention, the engineering machinery may be a loader.

[0014] The beneficial effects of the engineering machinery with improved layout according to the utility model are at least as follows: compared with existing engineering machinery such as graders and loaders, the operator can fill the fuel tank and the exhaust treatment liquid tank by standing on the ground, which not only improves the convenience of daily filling of fuel and exhaust treatment liquid, but also improves the filling efficiency, and can more conveniently inspect and repair the fuel tank and the exhaust treatment liquid tank; the battery is arranged in the engine compartment, which can ensure that the engineering machinery can be at a suitable working temperature even in cold winter, avoiding the problem of difficulty in starting the engine in cold winter; the hydraulic gear pump arranged on the gearbox is used to replace the hydraulic accumulator used in the traditional method as the power source of the auxiliary steering system, so as to realize emergency auxiliary steering, which not only simplifies the auxiliary steering system but also reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The features and advantages of the present invention will be clearly understood through the detailed description provided below with reference to the accompanying drawings. It should be understood that the following drawings are merely schematic and not necessarily drawn to scale, and thus cannot be regarded as limiting the present invention, wherein:

[0016] Figure 1 The figure is a schematic diagram of the overall structure of an embodiment of the engineering machinery according to the utility model, namely, a motor grader;

[0017] Figure 2 for Figure 1 A partial view of a motor grader is shown, showing the mounting locations of the fuel tank and urea tank;

[0018] Figure 3 for Figure 1 a partial view of the motor grader shown showing the mounting locations of the fuel tank and battery; and

[0019] Figure 4 for Figure 1 A partial view of a motor grader is shown illustrating the mounting location of a gear pump for the hydraulic steering system. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, many specific details are set forth so that those skilled in the art can more fully understand and implement the present invention. In addition, it should be understood that the present invention is not limited to the specific embodiments described. On the contrary, any combination of the features and elements described below can be considered to implement the present invention, regardless of whether they involve different embodiments. Therefore, the following aspects, features, embodiments and advantages are for illustrative purposes only and should not be regarded as elements or limitations of the claims unless explicitly stated in the claims.

[0021] The terms such as "front end" and "rear end" used below are defined according to the general travel direction of the construction machinery, the "front end" is the "forward end" along the travel direction for connecting the working device, and the "rear end" is the end opposite to the "front end". The terms "including" and "having" are used to express an open-ended inclusive meaning and mean that there may be additional elements / components in addition to the listed elements / components.

[0022] Figure 1 An embodiment of an engineering machine 100 according to the utility model is shown, specifically a schematic diagram of the overall structure of a grader. In this embodiment, the grader includes an engine, a transmission system, a travel system, a steering system, a braking system, a working device, a hydraulic control system, electrical equipment and a cab. The travel system includes a frame 1 and four wheels 1a, and the frame 1 is equipped with an engine (not shown), a cab 2, an engine hood 3 and a gearbox 7, wherein the gearbox 7 is part of the transmission system, and the engine hood 3 installed on the upper side of the frame constitutes an engine compartment for accommodating the engine. As can be seen from the figure, the frame 1 has a front end portion 11 and a rear end portion 12, the cab 2 is located at the front end portion 11 of the frame 1, and the engine hood 3 and the engine are installed at the rear end portion 12 of the frame 1. In addition, the grader also includes a fuel tank 4 and an exhaust gas treatment liquid tank 5, and the exhaust gas treatment liquid tank is also called a urea liquid tank (DEF tank) and is part of the post-treatment system.

[0023] In the existing grader, the fuel tank 4 is generally installed at a higher position above the frame, which makes fuel filling inconvenient. Figure 2 The fuel tank 4 is mounted to the rear end portion 12 of the frame below the engine hood 3, specifically, on the lower side of the rear end of the frame 1, and does not interfere with other components of the grader. The fuel tank 4 is visible for easy fuel filling. The fuel tank is arranged in this way in the grader so that the operator can directly fill the fuel tank 4 while standing on the ground, without having to climb to a higher position with the help of other tools, which facilitates the operator's daily filling and improves the filling efficiency. In addition, the fuel tank 4 is arranged at the rear end of the grader so that the fuel tank can also play the role of a counterweight, thereby not only increasing the compaction force and stability of the grader, improving the construction efficiency and quality, but also eliminating part of the counterweight device and simplifying the configuration of the vehicle.

[0024] In addition, in existing graders, the exhaust gas treatment fluid tank is generally arranged on the upper side of the rear part of the frame and arranged inside the engine hood, which makes it inconvenient to add the exhaust gas treatment fluid and perform maintenance. Figure 1 and Figure 2In this embodiment, the exhaust gas treatment liquid tank 5 is mounted on one side of the vehicle frame below the cab 2, exposing a port suitable for filling the exhaust gas treatment liquid. The fuel tank is arranged in this way in the grader so that the operator can directly fill the exhaust gas treatment liquid tank 5 while standing on the ground, without having to climb to a higher position with the help of other tools, which facilitates the operator's daily filling, improves the filling efficiency, and also facilitates the maintenance of the exhaust gas treatment liquid tank.

[0025] According to one embodiment of the present invention, see Figure 1 The electrical equipment of the grader includes a battery 6, which is a key component of the grader. The battery can be used to power onboard electrical equipment, or to drive a starter motor to start the engine. Since the battery 6 is arranged in the engine compartment defined by the engine hood 3, Figure 1 Not visible in the figure, shown only as dashed lines. Figure 3 , the specific installation position of the battery 6 is shown. Specifically, the battery 6 can be installed at a suitable position in the engine compartment defined by the engine hood 3 by a battery bracket 60 fixedly connected to the upper side of the frame 1. For clarity, Figure 3 The engine hood 3 and other components in the engine hood are removed, and only the battery bracket 60 and the battery 6 are retained. In this embodiment, since the battery 6 is arranged in the engine compartment, when the construction machinery, such as the grader, works in a high-cold area or in cold weather, the heat emitted by the engine can be used to provide the battery with an external environment with a suitable temperature, ensuring that it is at a suitable working temperature, thereby avoiding the problem of difficulty in starting the grader in a cold environment.

[0026] According to a preferred embodiment of the present invention, the grader 1 further comprises an auxiliary hydraulic steering system to ensure that the vehicle can achieve steering when the engine loses power. Figure 4 In this embodiment, a separate hydraulic gear pump 8 is provided to replace the complex and costly hydraulic accumulator in the prior art, and the hydraulic gear pump 8 is connected to the output shaft 70 of the gearbox 7. When the engine loses power, the vehicle has a certain speed, and under the action of the vehicle inertia, the wheels drive the output shaft of the gearbox to rotate, and then drive the hydraulic gear pump 8 to rotate, so that the hydraulic gear pump 8 becomes the power source of the auxiliary hydraulic steering system, wherein the hydraulic gear pump 8 is provided with a pressure valve (not shown), and the pressure valve is used to control the fluid communication between the hydraulic gear pump and the steering wheel steering gear of the engineering machinery. When the hydraulic gear pump establishes oil pressure due to the rotation, the pressure valve automatically opens, so that the hydraulic gear pump 8 can provide hydraulic oil with a certain pressure to the steering wheel steering gear, and the steering wheel steering gear drives the steering wheel to rotate, thereby realizing emergency steering. This configuration can not only optimize performance, but also reduce manufacturing costs.

[0027] It should be understood that the motor grader is only a preferred embodiment of the engineering machinery. The above layout configuration is also applicable to other engineering machinery, such as loaders, etc., and is also covered within the protection scope of this application.

[0028] Industrial Applicability

[0029] The utility model relates to engineering machinery such as a grader, a loader and the like, and in particular to the configuration and layout of key components thereof such as a fuel tank, an exhaust gas treatment liquid tank, a battery and an auxiliary steering system.

[0030] For construction machinery with such configuration and layout:

[0031] The fuel tank 4 is installed on the rear end portion 12 of the frame 1 below the engine hood 3, and the exhaust gas treatment liquid tank 5 is installed on one side of the frame 1 below the cab 2. The operator can fill the fuel tank 4 and the exhaust gas treatment liquid tank 5 with fuel and exhaust gas treatment liquid respectively while standing on the ground, which not only improves the convenience of daily filling of fuel and exhaust gas treatment liquid, but also improves the filling efficiency, and also makes it more convenient to inspect and maintain the fuel tank and the exhaust gas treatment liquid tank.

[0032] The battery 6 is arranged in the engine compartment, which can ensure that the construction machinery can be kept at a suitable working temperature even in high-altitude cold areas and in cold winters, thereby avoiding the problem of difficulty in starting the engine in cold winters.

[0033] The hydraulic gear pump installed on the gearbox replaces the hydraulic accumulator used in the traditional method as the power source of the auxiliary steering system. When the engine loses power, the hydraulic gear pump is driven to rotate by the wheels under the inertia of the vehicle. When the hydraulic gear pump builds up oil pressure, the pressure valve automatically opens, allowing the hydraulic gear pump to provide hydraulic oil with a certain pressure to the steering wheel steering gear to achieve emergency steering. The hydraulic gear pump becomes the power source of the auxiliary steering system, realizing emergency auxiliary steering, which not only simplifies the auxiliary steering system but also reduces costs.

[0034] For those skilled in the art, various modifications and variations may be made to the embodiments disclosed above without departing from the scope or spirit of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from the practice of the utility model disclosed in this specification. This specification and the examples disclosed therein should be considered to be illustrative only, and the true scope of the utility model is specified by the appended claims and their equivalents.

Claims

1. An engineering machine, comprising a frame (1), a cab (2), an engine hood (3), an engine, a fuel tank (4) and an exhaust gas treatment liquid tank (5), wherein the frame has a front end portion (11) and a rear end portion (12), the cab is mounted to the front end portion above the frame; the engine is located in an engine compartment defined by the engine hood, and the engine hood and the engine are both mounted to the rear end portion above the frame; characterized in that The fuel tank (4) is mounted to the rear end portion (12) of the vehicle frame below the engine hood (3); and the exhaust gas treatment liquid tank (5) is mounted to one side of the vehicle frame below the cab.

2. The construction machinery according to claim 1, characterized in that: The construction machine (100) further comprises a battery (6), wherein the battery is arranged in the engine compartment defined by the engine hood.

3. The construction machinery according to claim 2, characterized in that: The battery (6) is installed in the engine compartment via a battery bracket (60) fixedly connected to the vehicle frame (1).

4. The construction machinery according to claim 1, characterized in that: The engineering machine further comprises an auxiliary hydraulic steering system, a gearbox (7) having an output shaft (70), and a hydraulic gear pump (8) connected to the output shaft, wherein the hydraulic gear pump constitutes a power source for the auxiliary hydraulic steering system.

5. The construction machine according to claim 4, characterized in that: The gearbox and the hydraulic gear pump are both arranged in the engine compartment.

6. The construction machine according to claim 4, characterized in that: The engineering machine also includes a steering wheel and a steering wheel steering gear for controlling the rotation of the steering wheel. The hydraulic gear pump (8) is provided with a pressure valve for controlling the fluid communication between the hydraulic gear pump and the steering wheel steering gear.

7. The construction machine according to any one of claims 1 to 6, characterized in that: The engineering machine (100) is a motor grader.

8. The construction machine according to any one of claims 1 to 6, characterized in that: The engineering machine (100) is a loader.

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