Carry-scraper power system meeting national IV emission standard

Abstract

The technical scheme of the utility model discloses a carry-scraper power system meeting the national IV emission standard. The carry-scraper power system comprises a rear frame, an engine, a tail gas aftertreatment device, a urea tank, an air filter, a storage battery, a fuel tank and an engine cooling device, wherein the engine, the tail gas aftertreatment device, the urea tank, the air filter, the storage battery, the fuel tank and the engine cooling device are installed on the rear frame. The engine is arranged at the center-of-gravity position of the rear portion of the rear frame in the left-right direction, the tail gas aftertreatment device, the air filter, the urea tank and the storage battery are installed on one side of the engine in the left-right direction, the fuel tank is installed on the other side of the engine in the left-right direction, and the engine cooling device is installed on the rear side of the engine. Through reasonable arrangement and connection of the engine, the tail gas aftertreatment device, the urea tank, the air filter, the storage battery, the fuel tank and the engine cooling device on the rear frame, the carry-scraper is compact in structure, small in occupied space and easy to install and maintain.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering vehicles, and specifically relates to a power system of a scraper that meets the National IV emission standard. Background Art

[0002] Scrapers are important operating equipment among engineering vehicles and are widely used. However, construction vehicles such as scrapers generate a large amount of exhaust gas during operation, especially underground scrapers, which are in a small, confined space with poor air flow, which endangers the health of drivers and causes environmental pollution. At present, scrapers need to meet China's Stage IV emission control technical standards for non-road machinery. The engine's exhaust treatment device has a large number of parts and a large volume, which further increases the overall volume of the scraper and increases the difficulty of scrapers operating in a small space.

[0003] In order to improve the exhaust gas treatment effect and reduce the size of the loader as much as possible in the prior art, the component structure or fixing device of the exhaust gas treatment device is usually improved. Patent CN 212359931 U discloses a urea tank fixing device for a loader and a loader. The urea tank fixing device includes a base, at least one fastening belt arranged on the base, and a connecting portion arranged on the side of the base; the base is a box body with an upper end opening, including a bottom plate, a front end plate arranged on the bottom plate, two side plates and a rear end plate, and the urea tank is installed in the base of the box structure and fixed to the bottom plate by a fastening belt; the base is installed on the side wall of the loader frame by a connecting portion; the urea tank is fixed safely and reliably, and the structure is simple, compact, and easy to disassemble and assemble, but the power system of the loader also includes components such as an exhaust gas after-treatment device, and it is impossible to adjust the structure of all components in the power system to be compact, and it is impossible to effectively reduce the size of the loader. Therefore, it is necessary to develop a loader that meets the National IV emission standards and has a compact structure and easy installation and maintenance of components. Utility Model Content

[0004] In order to solve the existing technical problems, the utility model provides a scraper power system that meets the National IV emission standards. Through the reasonable arrangement and connection of the engine, exhaust gas after-treatment device, urea tank, air filter, battery, fuel tank and engine cooling device on the rear frame, the scraper has a compact structure, occupies a small space, and is easy to install and maintain.

[0005] The technical solution of the utility model is: a power system of a scraper that meets the National IV emission standard, comprising a rear frame and an engine, an exhaust gas aftertreatment device, a urea tank, an air filter, a battery, a fuel tank, and an engine cooling device installed on the rear frame; the engine is arranged at the center of gravity position in the left and right directions of the rear part of the rear frame, the exhaust gas aftertreatment device, the air filter, the urea tank and the battery are installed on one side of the engine in the left and right directions, the fuel tank is installed on the other side, and the engine cooling device is installed on the rear side of the engine;

[0006] The battery is used to provide power for the engine, the exhaust gas after-treatment device, the urea tank, the air filter, the battery, the fuel tank, and the engine cooling device. The urea tank is arranged below the battery, the exhaust gas after-treatment device is arranged behind the urea tank, the urea tank is connected to the exhaust gas after-treatment device, the exhaust gas after-treatment device is connected to the exhaust port of the engine, the air filter is arranged above the exhaust gas after-treatment device, the air filter is connected to the air intake of the engine, the fuel tank is connected to the engine through a fuel pipeline, and the coolant of the engine is transported to the engine cooling device for cooling and then transported back to the engine.

[0007] Furthermore, a power distribution cabinet is installed on the upper part of the battery, and the power distribution cabinet is used to control the power supply of the battery.

[0008] Furthermore, the fuel tank extends from front to rear to the side of the engine cooling device.

[0009] Furthermore, a hydraulic oil radiator is arranged on the upper side of the fuel tank, and the hydraulic oil radiator and the fuel tank are arranged on the same side of the engine.

[0010] Furthermore, a front frame is installed on the front side of the rear frame, a cab is arranged between the rear frame and the front frame, the cab is installed on the rear frame, a lifting mechanism is installed on the front part of the front frame, and a bucket is installed at the front end of the lifting mechanism.

[0011] The engine, exhaust gas after-treatment device, urea tank, air filter, battery, fuel tank, engine cooling device, power distribution cabinet, hydraulic oil radiator and lifting mechanism of this embodiment 1 are all existing technologies and will not be described in detail.

[0012] When the power system of a scraper loader meeting the National IV emission standard of the utility model is working, the power distribution cabinet controls the battery to supply power to the engine, the fuel tank provides fuel to the engine, the engine starts, the air enters the engine after being filtered by the air filter to ensure the normal operation of the engine, the exhaust gas generated by the engine is treated by the exhaust gas post-treatment device and then discharged, and the urea tank provides urea to the exhaust gas post-treatment device to ensure the normal operation of the exhaust gas post-treatment device. When the engine is working, the hydraulic oil radiator starts to work to dissipate heat for the hydraulic system of the engine, and when the engine coolant reaches the set temperature after the engine has worked for a period of time, the engine cooling device starts to work to cool the engine coolant.

[0013] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0014] (1) The utility model makes the scraper loader compact in structure and occupies little space by rationally arranging and connecting the engine, exhaust gas after-treatment device, urea tank, air filter, battery, fuel tank and engine cooling device on the rear frame, so that the scraper loader can be used in a smaller working space, and the scraper loader meets the National IV emission standard.

[0015] (2) The installation structure is simple, the layout of various components is reasonable, and it is easy to maintain and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the mechanism of the rear frame of the utility model;

[0018] Figure 3 It is a schematic structural diagram of the exhaust gas post-treatment device of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the engine cooling device of the utility model.

[0020] In the figure, a rear frame 1, an engine 2, an exhaust gas aftertreatment device 3, a urea tank 4, an air filter 5, a battery 6, a fuel tank 7, an engine cooling device 8, a hydraulic oil radiator 10, a front frame 11, a cab 12, a lifting mechanism 13, and a bucket 14 are shown. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Example 1

[0023] Reference Figure 1-4A power system for a scraper that meets the National IV emission standard includes a rear frame 1 and an engine 2, an exhaust gas aftertreatment device 3, a urea tank 4, an air filter 5, a battery 6, a fuel tank 7, and an engine cooling device 8 installed on the rear frame 1; the engine 2 is arranged at the center of gravity in the left-right direction of the rear part of the rear frame 1, the exhaust gas aftertreatment device 3, the air filter 5, the urea tank 4 and the battery 6 are installed on one side of the engine 2 in the left-right direction, and the fuel tank 7 is installed on the other side, and the engine cooling device 8 is installed on the rear side of the engine 2;

[0024] The battery 6 is used to provide power for the engine 2, the exhaust gas after-treatment device 3, the urea tank 4, the air filter 5, the battery 6, the fuel tank 7 and the engine cooling device 8. The urea tank 4 is arranged below the battery 6, the exhaust gas after-treatment device 3 is arranged behind the urea tank 4, the urea tank 4 and the exhaust gas after-treatment device 3 are connected, the exhaust gas after-treatment device 3 is connected to the exhaust port of the engine 2, the air filter 5 is arranged above the exhaust gas after-treatment device 3, the air filter 5 is connected to the air intake of the engine 2, the fuel tank 7 is connected to the engine 2 through a fuel pipeline, and the coolant of the engine 2 is transported to the engine cooling device 8 for cooling and then transported back to the engine 2.

[0025] The engine 2 needs to inhale a large amount of air during operation. If the air is not filtered, the dust suspended in the air will be sucked into the cylinder of the engine, which will accelerate the wear of the piston group and the cylinder; larger particles entering between the piston and the cylinder will cause serious "cylinder pulling", which is particularly serious in a dry and sandy working environment. The installation of the air filter 5 plays a role in filtering out dust and sand in the air to ensure that sufficient and clean air enters the cylinder.

[0026] The function of the exhaust gas aftertreatment device 3 is to convert harmful gases in the exhaust gas into harmless substances through chemical reactions such as absorption, decomposition, oxidation, and reduction, so as to achieve the purpose of purifying and reducing exhaust gas emissions.

[0027] The urea tank 4 is used to contain urea solution. Diesel engine vehicles need to be equipped with urea because diesel engines emit harmful gases such as nitrogen oxides, which cause environmental pollution. Long-term inhalation of such exhaust gas by humans causes great harm to the human body. In order to reduce this harm, urea needs to be added to vehicles using diesel engines. Urea added to the exhaust after-treatment device has a catalytic function. When it encounters nitrogen oxides, a chemical reaction will occur, converting the nitrogen oxides into nitrogen and water and then discharging them.

[0028] The principle of the engine cooling device 8 is to use cold air to reduce the temperature of the coolant from the engine 2 in the engine cooling device 8, with the purpose of protecting the engine 2 from damage caused by overheating.

[0029] Furthermore, a power distribution cabinet is installed on the upper part of the battery 6, and the power distribution cabinet is used to control the power supply of the battery 6. The power distribution cabinet controls the battery 6 to supply power to the components to ensure the normal operation of the components.

[0030] Furthermore, the fuel tank 7 extends from the front to the rear to the side of the engine cooling device 8. The structure of the fuel tank 7 makes the volume of the fuel tank 7 meet the requirements of the scraper, and the occupied space is reasonable, so that the scraper occupies less space.

[0031] Furthermore, a hydraulic oil radiator 10 is arranged on the upper side of the fuel tank 7, and the hydraulic oil radiator 10 and the fuel tank 7 are arranged on the same side of the engine 2. The layout of the heat dissipation and exhaust gas post-treatment device 3 is reasonable, which does not affect the exhaust gas treatment or the heat dissipation.

[0032] Furthermore, a front frame 11 is installed at the front side of the rear frame 1, a cab 12 is arranged between the rear frame 1 and the front frame 11, the cab 12 is installed on the rear frame 1, a lifting mechanism 13 is installed at the front of the front frame 11, and a bucket 14 is installed at the front end of the lifting mechanism 13. The bucket 14 is driven by the lifting mechanism 13 to perform operations.

[0033] The engine of the first embodiment is a diesel engine or an engineering machinery engine.

[0034] The engine 2, exhaust gas aftertreatment device 3, urea tank 4, air filter 5, battery 6, fuel tank 7, engine cooling device 8, power distribution cabinet, hydraulic oil radiator 10 and lifting mechanism 13 of this embodiment 1 are all existing technologies and will not be described in detail.

[0035] When the power system of a scraper loader meeting the National IV emission standard of the utility model is working, the power distribution cabinet controls the battery 6 to supply power to the engine 2, the fuel tank 7 provides fuel to the engine 2, the engine 2 is started, and the air enters the engine 2 after being filtered by the air filter 5 to ensure the normal operation of the engine 2, the exhaust gas generated by the engine 2 is treated by the exhaust gas post-treatment device 3 and then discharged, and the urea tank 4 provides urea to the exhaust gas post-treatment device 3 to ensure the normal operation of the exhaust gas post-treatment device 3. When the engine 2 is working, the hydraulic oil radiator 10 starts to work to dissipate heat for the hydraulic system of the engine 2, and when the coolant of the engine 2 reaches the set temperature after the engine 2 has worked for a period of time, the engine cooling device 8 starts to work to cool the coolant of the engine 2.

Claims

1. A power system for a scraper that meets the National IV emission standard, characterized by: The vehicle comprises a rear frame (1) and an engine (2), an exhaust gas aftertreatment device (3), a urea tank (4), an air filter (5), a battery (6), a fuel tank (7), and an engine cooling device (8) mounted on the rear frame (1); the engine (2) is arranged at the center of gravity in the left-right direction of the rear part of the rear frame (1); the exhaust gas aftertreatment device (3), the air filter (5), the urea tank (4), and the battery (6) are mounted on one side of the engine (2) in the left-right direction, and the fuel tank (7) is mounted on the other side; and the engine cooling device (8) is mounted on the rear side of the engine (2); The battery (6) is used to provide power for the engine (2), the exhaust gas post-treatment device (3), the urea tank (4), the air filter (5), the battery (6), the fuel tank (7) and the engine cooling device (8); the urea tank (4) is arranged below the battery (6); the exhaust gas post-treatment device (3) is arranged behind the urea tank (4); the urea tank (4) and the exhaust gas post-treatment device (3) are connected; the exhaust gas post-treatment device (3) is connected to the exhaust port of the engine (2); the air filter (5) is arranged above the exhaust gas post-treatment device (3); the air filter (5) is connected to the air inlet of the engine (2); the fuel tank (7) is connected to the engine (2) via a fuel pipeline; the coolant of the engine (2) is transported to the engine cooling device (8) for cooling and then transported back to the engine (2).

2. A scraper power system that meets the National IV emission standard according to claim 1, characterized in that: A power distribution cabinet is installed on the upper part of the storage battery (6), and the power distribution cabinet is used to control the power supply of the storage battery (6).

3. The power system for a scraper that meets the National IV emission standard according to claim 1, characterized in that: The fuel tank (7) extends from front to rear to the side of the engine cooling device (8).

4. A scraper power system that meets the National IV emission standard according to claim 1 or 3, characterized in that: A hydraulic oil radiator (10) is arranged on the upper side of the fuel tank (7), and the hydraulic oil radiator (10) and the fuel tank (7) are arranged on the same side of the engine (2).

5. The power system for a scraper that meets the National IV emission standard according to claim 1, characterized in that: A front frame (11) is installed at the front side of the rear frame (1), a cab (12) is arranged between the rear frame (1) and the front frame (11), the cab (12) is installed on the rear frame (1), a lifting mechanism (13) is installed at the front of the front frame (11), and a bucket (14) is installed at the front end of the lifting mechanism (13).

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