CN210421207U

CN210421207U - Novel low-emission bulldozer

Info

Publication number: CN210421207U
Application number: CN201920963398.7U
Authority: CN
Inventors: 侯玉鹏; 徐建; 刘存波; 张明月; 吕克明; 孟立勇; 张晨
Original assignee: Shantui Chutian Construction Machinery Co Ltd
Current assignee: Shantui Chutian Construction Machinery Co Ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-04-28
Anticipated expiration: 2029-06-25

Abstract

The utility model relates to a novel low emission bull-dozer, including driving system, driving system includes engine, aftertreatment unit, air intake unit and radiator, and the radiator is arranged at the engine front portion, and the radiator is installed in the aircraft bonnet in the front, and aftertreatment unit and air intake unit install in the engine top, and wherein aftertreatment unit arranges at front, and the air intake unit is arranged at the rear portion, and the air intake unit is close to the driver's cabin installation, aftertreatment unit includes the relay connection pipe, and the both ends of relay connection pipe are connected with first exhaust treatment device and second exhaust treatment device respectively perpendicularly, and first exhaust treatment device, relay connection pipe, second exhaust treatment device become the U type and assemble into an organic whole. The utility model discloses following beneficial effect has: the post-processing unit has compact structure and high space utilization rate, can be installed without increasing the width of the vehicle body, saves the cost and reduces the sight shielding.

Description

Novel low-emission bulldozer

Technical Field

The utility model relates to a novel low bull-dozer that discharges belongs to bull-dozer engineering machine tool technical field.

Background

In recent years, more stringent requirements for the emission limits of off-road machines have been developed in the country, and engineering equipment such as bulldozers and the like require exhaust gas purification treatment, and generally, an exhaust gas post-treatment unit is mounted on the bulldozers. The exhaust gas post-treatment unit consists of a first exhaust gas treatment device, a second exhaust gas treatment device and a relay connecting pipe between the first exhaust gas treatment device and the second exhaust gas treatment device, wherein the first exhaust gas treatment device is divided into an oxidation catalyst (DOC) and a particulate matter filter (DPF), and the first exhaust gas treatment device and the particulate matter filter are sequentially packaged in a cylindrical pipeline. The first exhaust gas treatment device mainly purifies pollutants such as carbon monoxide (CO), Hydrocarbons (HC), particulate matter, and the like in exhaust gas. The second exhaust treatment device is a selective catalytic reduction device (SCR) that mainly purifies harmful nitrogen oxides (NOx) in the exhaust gas. A reducing agent liquid nozzle is arranged in the pipe of the intermediate connection pipe and is used for adding the reducing agent of the selective catalytic reduction device into the exhaust gas. In order to sufficiently mix the reducing agent liquid with the exhaust gas, the pipe length of the intermediate connection pipe needs to be substantially the same as the pipe length of the exhaust gas treatment device. These exhaust gas treatment devices are heavy, large in volume, and high in temperature, as compared with the exhaust muffler and the connecting pipe of the conventional bulldozer.

Therefore, how to reasonably install and arrange the exhaust aftertreatment unit on the existing bulldozer becomes a problem which needs to be solved by the technical personnel in the field.

Known issued patents: CN 104185708A and CN 104471153 a mention a layout of an exhaust gas aftertreatment unit and an intake unit, an engine, a radiator, etc. The above-mentioned patent arrangements are similar and suffer from the following common disadvantages: 1. the relay connecting pipe of the exhaust gas post-processing unit is positioned above the first exhaust gas processing device and the second exhaust gas processing device, so that the height of the vehicle body is increased, and the view of the front part of an operator is shielded.

2. The exhaust aftertreatment unit is close to the cab, so that the heat radiation of the cab is large, and the driving comfort is influenced.

3. The heat insulation air deflector is not arranged around the post-treatment, and the bulldozer is a blowing fan, so that air entering the radiator is still heated to a certain degree, and the heat radiation effect of the radiator is influenced.

SUMMERY OF THE UTILITY MODEL

According to the not enough among the above prior art, the utility model discloses the technical problem who solves is: in order to solve one of the problems, a novel low-emission bulldozer is provided.

The utility model relates to a novel low-emission bulldozer, which comprises a main engine, a power system, a hood and a working device, wherein the working device is positioned at the foremost end of the main engine, a scraper knife lifting oil cylinder of the working device is arranged at the foremost part of a front hood of the hood, which is close to the top end, the power system comprises an engine, a post-processing unit, an air inlet unit and a radiator, the radiator is arranged at the front part of the engine, the radiator is arranged in the front hood, the post-processing unit and the air inlet unit are arranged above the engine, wherein the rear processing unit is arranged at the front part, the air inlet unit is arranged at the rear part, a preset gap is reserved between the rear processing unit and the air inlet unit, the air inlet unit is arranged close to the cab, the post-processing unit comprises a relay connecting pipe, two ends of the relay connecting pipe are respectively and vertically connected with a first exhaust treatment device and a second exhaust treatment device, and the first exhaust treatment device, the relay connecting pipe and the second exhaust treatment device are assembled into a whole in a U shape.

Preferably, the air inlet unit comprises a prefilter positioned above the hood and a main air filter inside the hood, the main air filter and the prefilter are connected together through a pipeline, and the main air filter is designed into a long and flat runway shape and is internally provided with high-efficiency nano filter paper.

Preferably, the hood includes a front hood, an upper hood, a right side hood, and a left side hood, the upper hood being designed to be in a front-low rear-high inclined state gradually raised from the front to the rear, the right side hood and the left side hood being designed to be in a state of being gradually contracted from the front to the rear toward the center of the vehicle body, the inclined contracted states of the front hood, the right side hood, and the left side hood finally converging at the front end of the cab.

Preferably, the side surfaces of the right side shield and the left side shield are provided with doors and ventilation holes, the outer cover of the post-processing unit is provided with a heat-insulating air deflector, the post-processing unit is isolated into a relatively independent space by the heat-insulating air deflector, the upper part of the heat-insulating air deflector is connected with the upper cover, the bottom of the heat-insulating air deflector is open, the top of the upper cover is closed, and the side surfaces of the heat-insulating air deflector are provided with.

Preferably, the radiator is mounted in the front bonnet and is arranged as far as possible in the front.

Preferably, the upper cover and the heat-insulating air deflector form a chimney structure, and the heat-insulating air deflector is gradually narrowed from the cab side to the radiator side.

Compared with the prior art, the utility model discloses following beneficial effect has: novel low bull-dozer that discharges, aftertreatment unit compact structure, space utilization is high, need not to increase the automobile body width and can install, saves the cost, reduces the sight and shelters from. 2. The post-processing unit is arranged in the middle of the hood and far away from the cab and the radiator, and the heat insulation air deflector is designed in the hood, so that the heat influence of the post-processing device on the cab and the heat dissipation system is effectively reduced. 3. The lifting oil cylinder is arranged in front, the space of the side surface of the engine cover is large, the ventilation area is large, and the heat dissipation effect is good. 4. The novel high-efficiency nano filter element is empty and small in size, and the filtering efficiency and the volume gray level are high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 shows the internal structure of an embodiment of the present invention;

FIG. 3 is a top view of an embodiment of the present invention;

in the figure: 1. the engine comprises a front hood 2, a radiator 3, a heat insulation air deflector 4, an upper hood 5, an engine 6, a first exhaust treatment device 7, a second exhaust treatment device 8, a relay connecting pipe 9, a right side hood 10, a main air filter 11, a pre-filter 12, a left side hood A, a main engine B, a power system C, a hood, a D working device D1, a scraper knife lifting cylinder A1 and a cab.

Detailed Description

The invention will be further described with reference to the accompanying drawings:

the present invention is further illustrated by the following specific examples, which are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.

Examples

As shown in fig. 1-3, the novel bulldozer with low emission comprises a main engine a, a power system B, a hood C and a working device D, wherein the working device D is located at the foremost end of the main engine a, a blade lifting cylinder D1 of the working device D is arranged at the foremost end of a front hood 1 of the hood C close to the top end, the power system B comprises an engine 5, an aftertreatment unit E, an air intake unit F and a radiator 2, the radiator 2 is arranged at the foreside of the engine 5, the radiator 2 is arranged in the front hood 1, the aftertreatment unit E and the air intake unit F are arranged above the engine 5, wherein the aftertreatment unit E is arranged at the foreside, the air intake unit F is arranged at the backside with a preset gap therebetween, the air intake unit F is arranged close to a cab a1, the aftertreatment unit E comprises a relay connection pipe 8, and a first exhaust treatment device 6 and a second exhaust treatment device 7 are vertically connected to two ends of the relay connection, the first exhaust gas treatment device 6, the intermediate connection pipe 8, and the second exhaust gas treatment device 7 are integrally assembled in a U-shape.

In this embodiment, the air intake unit F includes a prefilter 11 located above the hood C and a main air filter 10 inside the hood C, the main air filter 10 and the prefilter 11 are connected together by a pipeline, the main air filter 10 is designed into a long and flat runway shape, and efficient nano filter paper is built in the main air filter 10; the hood C includes a front hood 1, an upper hood 4, a right side hood 9, and a left side hood 12, the upper hood 4 is designed to be in a front-low rear-high inclined state gradually raised from the front to the rear, the right side hood 9 and the left side hood 12 are designed to be in a state of being gradually contracted from the front to the rear toward the center of the vehicle body, and the inclined contracted states of the front hood 1, the right side hood 9, and the left side hood 12 finally converge at the front end of a cab a 1. (ii) a The side surfaces of the right side shield 9 and the left side shield 12 are provided with doors and ventilation holes, the post-processing unit E is covered by a heat-insulating air deflector 3, the heat-insulating air deflector 3 and the post-processing unit E are isolated into a relatively independent space, the upper part of the heat-insulating air deflector 3 is connected with the upper shield 4, the bottom of the heat-insulating air deflector is open, the top of the upper shield 4 is closed, and the side surfaces of the heat-insulating air deflector are provided with ventilation holes; the radiator 2 is mounted inside the front bonnet 1 and arranged as far as possible in the front; the upper cover 4 and the heat-insulating air deflector 3 form a chimney structure, and the heat-insulating air deflector 3 is gradually narrowed from the cab A1 side to the radiator 2 side.

The specific working principle of the embodiment is as follows: low emission bull-dozer is divided by A host computer, B driving system, C aircraft bonnet, D equipment four bibliographic categories and is constituteed, as shown in figure 1. The main machine A is consistent with a common crawler dozer. The working device D is positioned at the foremost end of the main machine, and a scraper knife lifting cylinder D1 of the working device D is arranged at the foremost part of the front hood 1 close to the top end. In the present embodiment, the front, rear, left, and right refer to respective directions of the front, rear, left, and right seen from the operator in cab a 1.

As shown in fig. 2, the power system B is composed of an engine 5, an aftertreatment unit E, an intake unit F, a radiator 2, and the like. The radiator 2 is disposed in front of the engine 5, and the radiator 2 is mounted in the front hood 1, and disposed at the front as much as possible. An aftertreatment unit E and an intake unit F are installed above the engine, wherein the aftertreatment unit E is disposed at the front and the intake unit F is disposed at the rear with a certain gap therebetween. The aftertreatment unit E and the intake unit F are installed as close as possible to the engine 5 and the cab a 1.

The aftertreatment unit E is integrally assembled by the first exhaust gas treatment device 6, the second exhaust gas treatment device 7, and the intermediate connection pipe 8 in a U-shape.

The air inlet unit F consists of a prefilter 11 arranged above the hood, a main air filter 10 arranged in the hood and a connecting pipeline, wherein the main air filter is designed into a long and flat runway shape and adopts high-efficiency nano filter paper.

As shown in fig. 2 and 3, the hood C is composed of a front hood 1, an upper hood 4, a left side hood 12, and a right side hood 9. In order to increase the field of vision in front of and to the left and right of the operator, the upper cover 4 is designed to be inclined in a low-front and high-rear direction gradually raised from the front to the rear. The left and right side shields (12, 9) are designed to be gradually contracted toward the center of the vehicle body from the front to the rear. The obliquely contracted state of the upper cover 1 and the left and right side shields (12, 9) finally converges at the front end of the main engine cab a 1.

The side surfaces of the left and right side shields (12, 9) of the hood C are provided with doors and ventilation holes, and the interior of the hood C is provided with a heat insulation air deflector 3. The heat insulation air deflector 3 isolates the post-processing unit E into a relatively independent space. The upper part of the heat insulation air deflector 3 is connected with the upper cover 4, and the bottom is open. The top of the upper cover 4 is closed, and the side surface is provided with a vent hole. The upper cover 4 and the heat insulation air deflector 3 form a chimney structure, hot air heated by heat radiation of the post-processing unit E rises to flow from the ventilation hole on the side surface of the upper cover 4, cold air flow enters from the open space at the bottom of the heat insulation air deflector 3, and a microcirculation is formed, so that the heat radiation of the post-processing unit E to the inside of the hood C is reduced. The heat insulation air deflector 3 is gradually narrowed from the cab A1 side to the front radiator 2 side, and the cold air entering from the left and right side shields (12, 9) is guided into the wind tube of the radiator 2.

The engine of the bulldozer is provided with the exhaust aftertreatment unit, and the aftertreatment unit is installed through reasonable arrangement of the scraper knife lifting oil cylinder, the radiator, the engine, the aftertreatment unit, the air inlet unit and the hood, so that the view of an operator is not shielded, and the heat dissipation of the engine is not influenced.

Interpretation of related terms:

an exhaust gas post-treatment unit: the main components of diesel engine exhaust pollutants are carbon monoxide (CO), Hydrocarbons (HC), nitrogen oxides (NOx), Particulate Matters (PM), and the like. In order to reduce the content of the above harmful components, the addition of an exhaust gas aftertreatment unit in an engine exhaust system is generally adopted. The exhaust gas post-treatment unit is a complex chemical reaction device assembly generally divided into three parts, the first part is an oxidation catalyst (DOC) which oxidizes pollutants such as carbon monoxide (CO) and Hydrocarbons (HC) in the exhaust gas, the second part is a particulate filter (DPF) which filters deposited particulates (carbon particles) to oxidize and generate harmless gas to be discharged, and the third part is a selective catalytic reduction device (SCR) which reduces harmful nitrogen oxides (NOx) in the exhaust gas into harmless nitrogen and water to be discharged. In the art, a first partial oxidation catalyst (DOC) and a second partial particulate filter (DPF) are generally sequentially packaged in a tubular pipe, which is called a first exhaust gas treatment device, and a third part is separately packaged in a tubular pipe, which is called a second exhaust gas treatment device. Various sensors, wiring harnesses and the like are also provided on the exhaust gas aftertreatment unit.

An air intake unit: the engine air intake unit generally consists of a prefilter, a main air filter and a connecting pipeline. The prefilter usually filters large-particle dust by using the inertia principle, and the main air filter generally consists of two stages of paper filter elements and is used for finer filtering.

A bulldozer: an earthwork machine capable of excavating, transporting and discarding rock soil.

The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a novel low emission bull-dozer, includes host computer (A), driving system (B), aircraft bonnet (C) and equipment (D), equipment (D) are located host computer (A) foremost, and equipment (D)'s spiller lifting cylinder (D1) arranges in aircraft bonnet (1) foremost near top position of aircraft bonnet (C), its characterized in that: the power system (B) comprises an engine (5), an after-treatment unit (E), an air inlet unit (F) and a radiator (2), wherein the radiator (2) is arranged at the front part of the engine (5), the radiator (2) is arranged in a front hood (1), the after-treatment unit (E) and the air inlet unit (F) are arranged above the engine (5), wherein the aftertreatment unit (E) is arranged at the front and the intake unit (F) at the rear, with a predetermined gap therebetween, an intake unit (F) is installed adjacent to the cab (A1), the post-processing unit (E) comprises a relay connecting pipe (8), two ends of the relay connecting pipe (8) are respectively and vertically connected with a first exhaust treatment device (6) and a second exhaust treatment device (7), and the first exhaust treatment device (6), the relay connecting pipe (8) and the second exhaust treatment device (7) are assembled into a whole in a U shape.

2. The new low emission bulldozer according to claim 1, characterised in that: the air inlet unit (F) comprises a prefilter (11) positioned above the hood (C) and a main air filter (10) inside the hood (C), the main air filter (10) is connected with the prefilter (11) through a pipeline, the main air filter (10) is designed into a long and flat runway shape, and efficient nano filter paper is arranged in the main air filter.

3. The new low emission bulldozer according to claim 1, characterised in that: the engine cover (C) comprises a front engine cover (1), an upper cover (4), a right side shield (9) and a left side shield (12), wherein the upper cover (4) is designed into a front low-back high-inclination state which is gradually lifted from the front to the back, the right side shield (9) and the left side shield (12) are designed into a front-back gradually contraction state towards the center of the vehicle body, and the inclination contraction states of the front engine cover (1), the right side shield (9) and the left side shield (12) are finally converged at the front end of the cab (A1).