CN106103172B - Working truck - Google Patents

Abstract

It is designed to provide a kind of working truck of construction for being formed to prevent the construction of hood from heating up due to the waste heat from engine room.Working truck of the invention has the engine (5) for the front for being mounted in travel machine body (2), with configuration on the top of engine (5) and to the after-treatment device (224) that the exhaust gas of engine (5) is purified, hood (6) covering engine (5) and after-treatment device (224) are utilized.Tilt the upper surface side of hood (6) from front to rear towards oblique upper.After-treatment device (224) is mounted in the upper side of engine (5), and make after-treatment device (224) be located at hood (6) upper surface rake rear inner part.

Description

Working truck

Technical field

The present invention relates to working trucks as a kind of tractor of agricultural operation or the wheel loader of building operations.

Background technique

Recently, with the application of the high-end exhaust limitation in relation to diesel engine, increasingly wish to send out equipped with diesel oil In agricultural working machine, building machinery and ship of motivation etc., carries and the useless of purified treatment is carried out to the Air Pollutants in exhaust gas After-treatment device as air purifying apparatus.Then, in the previous working truck such as tractor, have and carrying waste gas purification dress When setting, waste gas purification apparatus is configured to the engine room under hood (Japanese: ボ Application ネ ッ ト) together with diesel engine In working truck (referring to patent document 1).

In addition, the fuel tank that a pair stockpiles the fuel of oriented engine supply is constituted in the working trucks such as tractor, it will A pair of fuel tank in a manner of avoiding engine, speed changer etc. assignment configuration in vehicle body or so (referring to patent document 2).

Existing technical literature

Patent document

Patent document 1: Japanese Unexamined Patent Publication 2013-116692 bulletin

Patent document 2: Japanese Unexamined Patent Publication 2010-042779 bulletin

Summary of the invention

Problems to be solved by the invention

In addition, the working truck as the diesel engine application to tractor that will have above-mentioned exhaust gas countermeasure device When middle, not only diesel engine and exhaust gas countermeasure are encased in limited narrow mounting space with device, Er Qiebi Radiator, battery and exhaust gas the countermeasure various parts as the associated electronic component of device must be got into above-mentioned mounting space It is interior.

But in the mounting space of working truck, the fever of the diesel engine driven not only makes diesel engine Machine self-temperature increases, and the temperature of waste gas purification apparatus is made to become quite high.Therefore, in order not to by from diesel engine The adverse effect of the fever of machine, exhaust gas countermeasure device needs to adjust the indoor temperature of engine, needs to develop appropriate match Set construction, cooling construction.In addition, driver's multiplies if not reducing to configuration in the heating of the driver's seat at engine room rear Comfort is sat to be deteriorated.In addition, the setting position of fuel tank is also restrained, so not only increasing the capacity of fuel tank entirety There are the limit for aspect, and the difference of the shape according to fuel tank, may interfere with driver and get on or off the bus.

Technical task of the invention is, provides a kind of studied status as described above and implements after improvement The working truck arrived.

The solution to the problem

The working truck of the invention of technical solution 1 has the engine for the front for being mounted in travel machine body, and to above-mentioned hair The after-treatment device that the exhaust gas of motivation is purified covers above-mentioned engine and above-mentioned after-treatment device using hood, It tilts the upper surface side of above-mentioned hood from front to rear towards oblique upper, above-mentioned after-treatment device is mounted in above-mentioned The upper side of engine makes above-mentioned after-treatment device be located at the rear inner part of above-mentioned hood upper surface rake.

It on the basis of the invention of technical solution 2 working truck described in technical solution 1, is observed from the front, for general The drive shaft for the wiper that the windshield glass of the front surface covering for the driver's cabin being mounted in above-mentioned travel machine body is wiped, The drive shaft is covered using the upper surface rear portion of above-mentioned hood.

On the basis of the invention of technical solution 3 working truck described in technical solution 1, above-mentioned hood with it is above-mentioned Thermal insulation board is configured between after-treatment device.

On the basis of the invention of technical solution 4 working truck described in technical solution 3, above-mentioned thermal insulation board is configured upper The downside for stating hood upper surface rake covers the upper surface and above-mentioned rear place of above-mentioned engine using above-mentioned thermal insulation board Manage the respective upper surface of device.

On the basis of working truck of the invention of technical solution 5 described in technical solution 3 or 4, above-mentioned working truck has It configures the back side in above-mentioned hood and at least covers the hood barricade of above-mentioned after-treatment device from the back side, upper It states and is provided with interval between hood barricade and above-mentioned thermal insulation board.

Invention effect

Using the present invention, by make after-treatment device be located at hood upper surface rake rear inner part, can be The space of after-treatment device receiving is significantly formed in hood, and can be arranged between thermal insulation board and hood For the space of thermal insulation layer.Thus, the environment on after-treatment device periphery can be made to become high temperature, be on the other hand able to suppress to engine The influence of the heat of outside, so the thermal balance in hood can be made good.Also, above-mentioned engine is utilized by having The construction that the upper surface rear portion of lid covers the drive shaft of wiper, be able to suppress rainwater fall directly on wiper drive shaft and On wind screen wiper drive, while it can be improved the aesthetics of working truck.

In addition, by configuring thermal insulation board on after-treatment device, can prevent by more than after-treatment device and engine The heating of hood caused by heat.Due to being formed with space between hood and thermal insulation board, so can make under thermal insulation board It is heat-insulated from outside air in the engine room of side, after-treatment device can be made to be acted under high temperature environment.Under hood The indoor heat of engine is blocked by hood barricade, so as to prevent manipulation seat due to the waste heat from engine room Heating.By the way that interval is arranged between hood barricade and thermal insulation board, it is difficult to hot-air is bored in engine room, thus It is able to suppress the generation of the thermal damage to after-treatment device itself and hood etc..

In addition, the indoor heat of engine under hood is blocked by hood barricade, so as to prevent from grasping Vertical seat heats up due to the waste heat from engine room.Thus, manipulating the driver on seat can not be filled by engine and post-processing The influence for the waste heat set and manipulation is carried out cosily.

Detailed description of the invention

Fig. 1 is the left view of tractor.

Fig. 2 is the top view of tractor.

Fig. 3 is the right view of tractor.

Fig. 4 is the perspective view obtained from tractor from right rear ramp.

Fig. 5 is the left-hand face explanatory diagram of travel machine body.

Fig. 6 is the left-hand face explanatory diagram for indicating the detailed configuration of travel machine body.

Fig. 7 is the perspective view obtained from travel machine body from left rear ramp.

Fig. 8 is the right lateral surface explanatory diagram of travel machine body.

Fig. 9 is the right lateral surface explanatory diagram for indicating the detailed configuration of travel machine body.

Figure 10 is the perspective view obtained from travel machine body from right rear ramp.

Figure 11 is the bottom view of tractor.

Figure 12 is the top perspective view of tractor.

Figure 13 is the left-hand face enlarged drawing of tractor.

Figure 14 is the perspective view for the hood back side construction for indicating to observe from driver's cabin side.

Figure 15 is the perspective view obtained from travel machine body from right diagonally forward.

Figure 16 is the perspective view for indicating the indoor construction of engine observed from left rear ramp.

Figure 17 is the perspective view for indicating the indoor construction of engine observed from right diagonally forward.

Figure 18 is the top perspective view for indicating the construction on fuel tank periphery.

Figure 19 is the left view of hood.

Figure 20 is the top view of hood.

Figure 21 is the main view of hood.

Figure 22 is the right view of hood.

Figure 23 is the rearview of hood.

Figure 24 is the bottom view of hood.

Specific embodiment

In the following, being based on Detailed description of the invention embodiment party of specific embodiments of the invention by taking the tractor as working truck as an example Formula.

Firstly, referring to Fig.1~Figure 11 illustrates the summary of tractor 1.The travel machine body 2 of tractor 1 in embodiment by It is supported as the pair of right and left front vehicle wheel 3 of traveling portion and same pair of right and left rear wheel 4.Before being mounted in travel machine body 2 Diesel engine 5 (hereinafter referred to as engine) the driving rear wheel 4 and front vehicle wheel 3 of the joint-track type as power source in portion, Traveling is travelled or retreated to make tractor 1 advance.Engine 5 is covered by hood 6.It is set in the upper surface of travel machine body 2 It is equipped with driver's cabin 7, in the inside of the driver's cabin 7 configured with manipulation seat 8 and steering wheel (round lever) 9, by making above-mentioned direction Disk 9 turns to, and moves left and right the steering direction of front vehicle wheel 3.It is provided in the outer lower portion of driver's cabin 7 and gets on or off the bus for driver Pedal 10.The fuel tank 11 that fuel is supplied to engine 5 is provided in the position of the bottom than driver's cabin 7 on the lower.

Travel machine body 2 is by the engine support 14 with front bumper 12 and front truck axle housing 13, and detachably fixes Body rack 15 in the left and right at the rear portion of engine support 14 is constituted.Make left and right ends side of the front axle 16 from front truck axle housing 13 It is prominent in a manner of it can rotate towards outside.Front vehicle wheel 3 is mounted on to the left and right ends of front truck axle housing 13 by front axle 16 Side.Have in the back hitch of body rack 15 for the appropriate speed change of rotary power from engine 5 to be transmitted to front and back four The gearbox 17 of a wheel 3,3,4,4.It is oriented in the body rack 15 of left and right and the lower face side bolt fastening of gearbox 17 The fuel box bracket 18 looked up as rectangle frame plate that left and right outside is stretched out.The fuel tank 11 of embodiment divides to control 2.It will The fuel tank 11 of left and right distributes the upper surface side for being mounted in the left and right extension of fuel box bracket 18.By the rear car axle housing 19 of left and right It is mounted in a manner of protruding outward on the left and right outer surface of gearbox 17.By the back axle 20 of left and right can rotate Mode in be inserted in left and right rear car axle housing 19 in.Rear wheel 4 is mounted on gearbox 17 by back axle 20.Behind left and right The rear mudguard 21 that the top of wheel 4 is controlled covers.

Being equipped in a manner of it can load and unload in the rear upper surface of gearbox 17 makes work as example rotary cultivator The mobile hydraulic pressure lifting mechanism 22 of industry mechanical elevating.The Work machines such as rotary cultivator are by by pair of right and left lower link 23 And the rear portion of 3 point linkage mechanisms and gearbox 17 of the composition of upper connecting rod 24 is connected.Gearbox 17 rear side surface backwards It is provided projectingly the PTO shaft 25 for PTO driving force to be transmitted to the Work machines such as rotary cultivator.

Flywheel 26 is straight with the engine output shaft (illustration omitted) being provided projectingly backwards with the rear side surface from engine 5 The mode tied in succession is installed on the engine output shaft.Have the transmission shaft 29 of universal joint will be from 26 court of flywheel by both ends The main connection of transmission input shaft 28 outstanding (referring to Fig.1, is schemed forward for driving shaft 27 outstanding and the front-surface side from gearbox 17 afterwards 7 and Figure 10).Configured with Hyaulic infinite variable speed device, forward-reverse switching mechanism, the secondary transmission gear of traveling in gearbox 17 Mechanism and rear-wheel differential gear train.The rotary power of engine 5 is transmitted to change via driving shaft 27 and transmission shaft 29 The main transmission input shaft 28 of fast case 17 makes engine 5 using Hyaulic infinite variable speed device and the secondary change gear mechanism of traveling The appropriate speed change of rotary power.Also, the variable-speed dynamic is transmitted to the rear wheel 4 of left and right via rear-wheel with differential gear train.

Making the front truck axle housing 13 for being built-in with front-wheel differential gear train (illustration omitted) certainly, front vehicle wheel outstanding passes backwards Axis (illustration omitted) is passed, front vehicle wheel outstanding exports forward with the front surface lower part from gearbox 17 by front truck wheel drive shaft 31 Axis 30 is connected.By the variable-speed dynamic of Hyaulic infinite variable speed device and the secondary change gear mechanism generation of traveling in gearbox 17 From front vehicle wheel output shaft 30, front truck wheel drive shaft 31 and front vehicle wheel transmission axle via the front-wheel differential gear in front truck axle housing 13 Wheel mechanism is transmitted to the front vehicle wheel 3 of left and right.

Then, referring to Fig.1~Fig. 4 illustrates the construction of the inside of driver's cabin 7.Match in the front of manipulation seat 8 in driver's cabin 7 It is equipped with steering column 32.Steering column 32 is to be embedded in the back side of the instrument board 33 that configures front-surface side inside driver's cabin 7 Such erection setting.Rounded steering wheel 9 will be overlooked and be mounted on the upper surface of low damage column 32 side outstanding upward To the upper end side of dish axle.

Being configured with forcibly on the right side of steering column 32 makes the Work machines such as rotary cultivator be moved to highest rising One touch type (Japanese: ワ Application タ ッ チ) elevating lever 34 of position or minimum down position, and for being braked to travel machine body 2 The pair of right and left brake pedal 35 of operation.It is configured in the left side of steering column 32 for switching the direction of travel of travel machine body 2 Operation is the forward-reverse changer lever 36 (commutator bar) to move forward and backward, and for the clutch to power ON cutting The clutch pedal 37 of (illustration omitted) progress rupturing operation.

In the left side of steering column 32 and the lower section of forward-reverse changer lever 36, configured with along the extension of forward-reverse changer lever 36 Maloperation prevent body 38 (reversal protection device).By the way that the maloperation of anti-contact apparatus will be used as to prevent body 38 from configuring after advance The lower section for moving back changer lever 36 prevents driver from connecting accidentally with forward-reverse changer lever 36 when getting on or off the bus on tractor 1 Touching.The operation display panel 39 for being built-in with liquid crystal display panel is provided in the upper rear portion side of instrument board 33.

On the bottom plate 40 in 8 front of manipulation seat being located in driver's cabin 7 and the right side of steering column 32 is configured with to engine 5 Revolving speed or the accelerator pedal 41 that is controlled of speed.In addition, the upper surface of bottom plate 40 is substantially integrally formed into flat surface.? The left and right sides for manipulating seat 8 is configured with lateral column 42.It is configured between manipulation seat 8 and left side column 42: will left and right two for executing The travel speed (speed) that a rear wheel 4 is maintained the brake parking lever 43 of the operation of on-position, forcibly makes tractor 1 The Ultra-Low Speed bar 44 (bar (Japanese: ク リ ー プ レ バ ー) at a slow speed) that is greatly reduced becomes for switching the traveling pair in gearbox 17 The secondary gear lever 45 of the output area of fast gear mechanism and the PTO for switching over operation for the driving speed to PTO shaft 25 become Fast bar 46.The differential lock of the Differential Driving for opening or closing two rear wheels 4 in left and right is configured in the lower section of manipulation seat 8 Only pedal 47.At the left rear side of manipulation seat 8 configured with the reversion PTO bar for executing the operation being driven reverse to PTO shaft 25 48。

Arm and elbow for being seated at the driver for manipulating seat 8 is provided between manipulation seat 8 and left side column 42 to put The handrail 49 set.Handrail 49 is formed separately from each other relative to manipulation seat 8, and the travel speed speedup including making tractor 1 Or the main shift lever 50 to slow down, and adjusting is changed to the height and position of Work machine as rotary cultivator manually Homework department's position dial 51 (lifting dial) of dial type.In addition, handrail 49 is formed to using rear end lower as branch It puts and the multistage structure for bouncing rotation.

The throttle lever 52, right that setting keeps the revolving speed of engine 5 is configured in order from front side at left side column 42 From PTO shaft 25 to the power of the Work machines such as rotary cultivator transmitting carry out connect rupturing operation PTO clutch switch 53, Behaviour is switched over for the hydraulic external delivery valve (sub-control valve, illustration omitted) to configuration in the upper surface side of gearbox 17 The multiple hydraulic operation bars 54 (SCV bar) made.Here, hydraulic external delivery valve is dilatory for being mounted on after being supplied to working oil Other Work machines as front-end loader (Japanese: Off ロ Application ト ロ ー ダ) on machine 1 are simultaneously controlled.In embodiment In, 4 hydraulic operation bars 54 are correspondingly configured with the quantity (4 row) of hydraulic external delivery valve.

The cylinder cap of diesel engine 5 is mounted on the cylinder body for being built-in with engine output shaft and piston, the table on the right side of cylinder cap Face is configured with inlet manifold 203, is on the other hand configured with exhaust manifold 204 in cylinder cap left-hand face.That is, on the edge of engine 5 Assignment configuration inlet manifold 203 and exhaust manifold 204 in the both side surface of engine output shaft.In the cylinder of diesel engine 5 Body front surface is configured with cooling fan 206, is on the other hand configured with flywheel 26 in cylinder body rear surface.That is, on engine 5 with The both side surface assignment configuration that engine output shaft intersects has flywheel 26 and cooling fan 206.

Diesel engine 5 has fuel feed pump 207 for supplying fuel, by fuel pressurized delivered in right lateral surface To injector cylindric common rail 208, always removed from the fuel of fuel tank 11 foreign matter fuel filter 209 and with into The EGR device 210 that gas menifold 203 is connected.The fuel of fuel tank 11 is pumping 213 via fuel filter by fuel pressurized delivered After 209 are supplied in fuel feed pump 207, common rail 208 is pressed and delivered to from fuel feed pump 207.Thus, by high pressure Fuel deposition is into common rail 208, so control is opened and closed by the fuel injection valve respectively to each injector, by common rail 208 The fuel of interior high pressure is from each cylinder that each injector is ejected into engine 5.

Diesel engine 5 has in left-hand face to be increased using the turbine that the exhaust gas from exhaust manifold 204 compresses air Depressor 211 keeps the EGR being re-circulated in EGR device 210 after a part of the exhaust gas from exhaust manifold 204 is cooling cooling Device 212.Turbocharger 211 has the compressor housing for being built-in with propeller impeller, makes the air inlet introducing side of compressor housing It is connected via air inlet pipe 222 with the air inlet discharge side of air cleaner 221, is on the other hand discharged the air inlet of compressor housing Side is connected with air inlet relay pipe (inlet upstream) 223.Turbocharger 211 has the turbine case for being built-in with turbine wheel The waste gas outlet of body, the exhaust introducing side and exhaust manifold 204 that make turbine shroud is connected, on the other hand make turbine shroud into Gas discharge side and the exhaust gas entrance of the waste gas purification apparatus 224 as after-treatment device are connected.

Diesel engine 5 utilizes the recycling for the rear surface (26 side of flywheel) that engine 5 has been bypassed as return line Cooler for recycled exhaust gas 212 of the flue gas leading by assignment configuration in both side surface is connected with EGR device 210.EGR device 210 is in engine 5 right side is connected with the air inlet relay pipe (air inlet downstream side) 225 that (206 side of cooling fan) forwards extends.Air inlet relaying Pipe 223,225 distinguishes assignment configuration in the both side surface of diesel engine 5, with frame that the front of diesel engine 5 is set The mode that intercooler (illustration omitted) in bracket 226 is connected is extended towards the front of diesel engine 5 upside. In addition, air cleaner 221 is configured on the upside of the front surface of frame bracket 226, the air inlet pipe being connected with air cleaner 221 The 222 left-hand face rear to be extended on diesel engine 5 in a manner of above frame bracket 226.

Using the above structure, the new air (outside air) in air cleaner 221 is inhaled by air cleaner After 221 dedustings and purification, it is attracted in the compression case body of turbocharger 211 via air inlet pipe 222.In turbocharger The new air of pressurization being compressed by 211 compression case body is supplied via air inlet relay pipe 223,225 and intercooler Into the EGR main body shell of EGR device 210.On the other hand, a part (EGR gas) of the exhaust gas from exhaust manifold 204 exists After the cooling of cooler for recycled exhaust gas 212, it is supplied in the EGR main body shell of EGR device 210 via EGR gas pipe.

EGR device 210 is by the new air of pressurization from turbocharger 211 and from the EGR gas of exhaust manifold 204 After mixing, which is supplied in inlet manifold 203.That is, being discharged in exhaust manifold 204 from diesel engine 5 A part of exhaust gas flows back into inlet manifold 203, so that maximum combustion temperature when making high loaded process declines, makes from bavin The discharge rate of the NOx (nitrogen oxides) of oil turbine 5 is reduced.

Diesel engine 5 has the waste gas purification apparatus 224 (DPF) of continuous regenerative.It will using waste gas purification apparatus 224 From particle-like substance (PM) removal in the exhaust gas that engine 5 is discharged, and reduce the carbon monoxide in exhaust gas (CO) and carbonization Hydrogen (HC).Waste gas purification apparatus 224 is configured in the top of the exhaust manifold 204 of the upper surface side of diesel engine 5.Exhaust gas is net The 224 substantially cylinders for being configured to the edge front-rear direction longer extension parallel with output shaft (crankshaft) of diesel engine 5 are set in makeup Shape, the front and rear sides (exhaust gas moving direction upstream side and downstream side) of waste gas purification apparatus 224 be provided with exhaust gas entrance and Waste gas outlet.

Waste gas purification apparatus 224 is provided with exhaust gas entrance in the shell outer peripheral surface of length direction one end (rear side), makes The exhaust gas discharge side of the exhaust gas entrance and the turbine shroud of turbocharger 211 is connected.Waste gas purification apparatus 224 is in length side The shell outer peripheral surface of another side (front side) is provided with waste gas outlet, the waste gas outlet is made to be connected with exhaust pipe 227.? On waste gas purification apparatus 224, exhaust gas entrance is open downward, and waste gas outlet is towards right side upper opening.Exhaust pipe 227 is certainly The left forward side of diesel engine 5 is towards right rear side to configure in a manner of above diesel engine 5.

In the top of diesel engine 5, make the output shaft of waste gas purification apparatus 224 and exhaust pipe 227 and diesel engine 5 The configuration side by side of parallel and left and right.That is, covering the left side of the upper surface of diesel engine 5 with waste gas purification apparatus 224, and it is vented Pipe 227 covers the mode on the right side of 5 upper surface of diesel engine, configures waste gas purification apparatus 224 and exhaust pipe 227 side by side.

Diesel engine 5 is arranged in by setting in the exhaust pipe 227 being connected with the exhaust side of waste gas purification apparatus 224 The bellows 228 at right rear side is connected with rear tail pipe 229.Tail pipe 229 is in the right forward side of driver's cabin 7 from below towards upper afterwards Side is extended, and is had in the downside of driver's cabin 7 towards the curved shape of diesel engine 5.Under tail pipe 229 is formed as afterwards The bending part of side is from Inside To Outside across the top in body rack 15.In addition, rear tail pipe 229 is formed as by thermal insulation board 230 cover the structure of the part in addition to upper part.

Next, 2~Figure 17 illustrates the structure of the engine room frame under hood 6 referring to Fig.1.Hood 6 is preceding Subordinate side forms radiator grille 231 and covers in front of engine room.It is configured on the downside of the left and right of hood 6 and utilizes porous plate shape At hood (Japanese: エ Application ジ Application カ バ ー) 232, to cover the left and right sides of engine room.That is, utilizing hood 6 And hood 232 covers the front, top and left and right of diesel engine 5.

Engine support 14 and preceding guarantor of the mode using left and right above front part to cover engine support 14 The upper limb erect bracket bottom plate 233 of dangerous thick stick 12.Overleaf side is equipped with the radiator 235 of fan guard 234 to be located at engine 5 Front-surface side mode erect be arranged on bracket bottom plate 233.Fan guard 234 surrounds the peripheral side of cooling fan 206 and will Radiator 235 is connected to cooling fan 206.In the front-surface side of radiator 235, the rectangular box-like setting of frame bracket 226 is set It sets on supporting plate 233.

Frame bracket 226 is formed as being covered rear surface by radiator 235, and covers front surface and a left side by cancellous plate Right lateral surface.Also, in frame bracket 226 other than being provided with above-mentioned intercooler, it is additionally provided with oil cooler, combustion Expect cooler etc..Air cleaner 221 is configured in the top position of the front surface of frame bracket 226.As a result, by radiator grille 231 The frame bracket 226 at the cooling air of attraction towards 231 rear of radiator grille flows, thus air cleaner 221 is cooling, and will Intercooler, oil cooler, fuel cooler in frame bracket 226 is cooling.In addition, the cooling air arrival from front is set The radiator 235 in the rear surface of frame bracket 226 is set, to improve the cooling effect for the cooling water that opposite diesel engine 5 supplies Fruit.

Pair of right and left body rack 15 is connected using the front of bearing boom support 236 and bottom plate 40 downside.Bearing is used Boom support 236 respectively with left and right the bolt fastening of body rack 15, come set up control body rack 15, on the upper surface of which Equipped with engine mounting bracket 237.By make engine mounting bracket 237 lower end surface and bearing boom support 236 it is upper Surface bolt fastening becomes the shape for surrounding the flywheel 26 of diesel engine 5 together with bearing boom support 236.

Make to be arranged in the engine stabilizer blade mounting portion (illustration omitted) on the downside of the left and right side surface of diesel engine 5, by Power under-chassis body 238 and the middle part of pair of right and left engine support 14 with vibration isolation rubber 239 are connected.Make to be arranged in bavin The engine stabilizer blade mounting portion (illustration omitted) of the rear surface of oil turbine 5, by the power under-chassis body with vibration isolation rubber 241 240 are connected with the upper surface of engine mounting bracket 237.

By power under-chassis body 238 with bolt fastening on the outside of the middle part of pair of right and left engine support 14, using starting Machine support 14 clamps diesel engine 5, supports the front side of diesel engine 5.Use the rear surface of diesel engine 5 by bearing Boom support 236, engine mounting bracket 237 and power under-chassis body 240 are connected with the front end side of pair of right and left body rack 15 Knot, in the rear side of the front end of body rack 15 bearing diesel engine 5.Front vibration isolation rubber 239 and left and right using left and right Diesel engine 5 is supported in travel machine body 2 by rear portion vibration isolation rubber 241.

Pair of right and left pillar brace 242,243 is erect setting in a manner of clamping power under-chassis body 240 from left and right and is being started Machine supports on the upper surface of bracket 237.Specifically, left side strut bracket 242 erects the left side that power under-chassis body 240 is arranged in Rear position, right side strut bracket 242 erect the right side front position that power under-chassis body 240 is arranged in.After covering hood 6 The hood barricade (shutter) 244 of side is linked to a left side in such a way that the upper surface of lower edge and power under-chassis body 240 separates Right a pair of posts bracket 242,243.

Hood barricade 244, which is overlooked, has the shape being bent.That is, hood barricade 244 is by such as lower part Divide and constitute: substantially in parallel from the outside (left side) of left side strut bracket 242 towards the front surface of right side and windshield glass 321 The rear ground plane 245 of extension, rear ground plane 245 right border towards front side bending made of side ground plane 246 and The leading edge of side ground plane 245 is towards right lateral bending and the joint face 247 that is connected with right side strut bracket 243.Rear shielding Face 245 is connected with left side strut bracket 242, and is formed as that left border is made to reach (a left side in the outer part than left side strut bracket 242 Side) position shape, rear ground plane 245 and the front surface of windshield glass 321 separate.The configuration of side ground plane 246 exists On the right side of the upper surface of power under-chassis body 240.Joint face 247 is configured to right border and is aligned with the front surface of right side strut bracket 243, and It is connected with right side strut bracket 243.

In the inside of hood 6, it is configured with hood barricade 244 in the back side of hood 6, will at least be given up The covering of the back side of air purifying apparatus 224 and exhaust pipe 227.Hood barricade 244 is formed as reaching left side strut branch The shape in the left side of frame 242, at least cover the left side of diesel engine 5 (204 side of the exhaust manifold) back side.Hood Barricade 244 is formed as the structure that two edge are connected with pair of right and left pillar brace 242,243, thus by diesel engine 5 Entire back side covering.Also, in the back side of hood 6, the regional opening on 244 right side of hood barricade, in the area A part in domain configured with the bellows 228 being connected with exhaust pipe 227 and rear tail pipe 229.

By the way that the back side of hood 6 is covered using hood barricade 244, the engine room under hood 6 Interior heat is heat-insulated by hood barricade 244, can prevent 7 side of driver's cabin from heating up due to the waste heat from engine room. Thus, the driver in driver's cabin 7 can not be influenced and comfortable by the waste heat of diesel engine 5, waste gas purification apparatus 224 Ground is manipulated.By the way that hood barricade 244 to be configured to separate with the front surface of driver's cabin 7, in configuration in engine Thermal insulation layer is formed between the driver's cabin 7 and hood barricade 244 at 6 rear of lid.

In addition, hood barricade 244 is provided with the bumps of specified period on rear ground plane 245, will start certainly The acoustic break that engine room under cover 6 issues.It is concave-convex by being arranged on hood barricade 244, hair can be utilized The bumps of motivation lid barricade 244 obtain the noise from the equal sendings of the indoor diesel engine 5 of engine under hood 6 Decaying, prevents the noise transmission into driver's cabin 7.

By pair of right and left boom support 248,249 be erected at fan guard 234 and hood barricade 244 it is respective on Portion.One end (rear end) of left side boom support 248 by hood barricade 244 rear ground plane 245 and left side strut branch Frame 242 is connected.One end (rear end) of the right side boom support 249 shorter than left side boom support 248 is by hood barricade 244 Joint face 247 be connected with right side strut bracket 243.Pair of right and left boom support 248, the 249 respective other ends and fan guard 234 top rear surface is connected.Utilize 248,249 pairs of a pair of of boom support fan guards using 2 stable support of travel machine body 234 and hood barricade 244 set up and linked, so these components are integrally formed, can integrally constitute firm Engine room support body.

The thermal insulation board 250 on pair of right and left boom support 248,249 is fixedly mounted on two edge of left and right.Thermal insulation board 250 exists Rear is covered from the middle part of boom support 248,249 under hood 6, is erected on boom support 248,249.Thermal insulation board 250 is matched It is set to the top covering by the waste gas purification apparatus 224 of 5 upside of diesel engine and exhaust pipe 227.Due to be erected at beam The fixed thermal insulation board 250 of mode on bracket 248,249 can make so can reinforce boom support 248,249 using thermal insulation board 250 Engine room bracket is formed as firmer construction.In addition, by between waste gas purification apparatus 224 and hood 6 with And thermal insulation board 250 is configured between exhaust pipe 227 and hood 6, the hair as caused by the waste heat from engine room can be prevented The heating of motivation lid 6.

It is located at the waste gas purification apparatus 224 for being mounted in 5 top of diesel engine on the inside of the rear of hood 6, is sending out Thermal insulation board 250 is configured between motivation lid 6 and waste gas purification apparatus 224.By configuring thermal insulation board on waste gas purification apparatus 224 250, the heating of the hood 6 as caused by the waste heat of waste gas purification apparatus 224 and diesel engine 5 can be prevented.In addition, Space can be formed between hood 6 and thermal insulation board 250, make in the engine room of the downside of thermal insulation board 250 from outside air every Heat can be such that waste gas purification apparatus 224 is acted under high temperature environment.

In addition, in addition to above-mentioned thermal insulation board 250, also have configuration 6 back side of hood and from the back side at least by exhaust gas The hood barricade 244 that purification device 224 covers.It will be started together using hood barricade 244 with thermal insulation board 250 The indoor heat of engine under cover is heat-insulated, so as to prevent from heating up due to the waste heat from engine room in driver's cabin 7. In addition, being spaced by being arranged between hood barricade 244 and thermal insulation board 250, it is difficult to which hot gas is bored under hood 6 Engine room in, be able to suppress the generation of the thermal damage to waste gas purification apparatus 224 itself and hood 6 etc..

Diesel engine 5 with the front for being mounted in travel machine body 2 configures on 5 top of diesel engine and to diesel oil The air-cooled cooling fan 206 of waste gas purification apparatus 224 and diesel engine 5 that the exhaust gas of engine 5 is purified.? The front-surface side of diesel engine 5 is configured with cooling fan 206, and the fixed peace of fan guard 234 that will cover cooling fan 206 In travel machine body 2, cooling fan 206, diesel engine 5 and waste gas purification apparatus 224 are covered using hood 6 Lid.The hood barricade 244 for covering 5 rear of diesel engine is configured at 6 back side of hood, hood is shielded Plate 244 is fixedly mounted in travel machine body 2.Pair of right and left boom support 248,249 is erected at fan guard 234 and hood The respective top of barricade 244.

The wiper 251 for removing the water droplet of windshield glass 321 is rotatably installed on windshield glass 321.It will scrape The drive shaft 252 of hydrophone 251 is inserted into the inside of driver's cabin 7 by windshield glass 321, makes wiper 251 by drive shaft 252 Centered on rotated.The front of the drive shaft 252 of wiper 251 is by the rear ground plane 245 of hood barricade 244 Covering.That is, being observed from the front, for the windshield glass of the front surface covering to the driver's cabin 7 that will be mounted in travel machine body 2 The drive shaft 252 of 321 wipers 251 wiped covers the drive shaft 252 using the upper surface rear portion of hood 6.By This, is able to suppress rainwater and falls directly on the drive shaft 252 of wiper 251, in the driving mechanism of wiper 251, and can mention High aesthetics.

In addition, a part in windshield glass 321 is equipped with through-hole 253, make to be supported in the hydraulic pump inside driver's cabin 7 254 is prominent in the outside of driver's cabin 7 from through-hole 253.247 phase of joint face with hood barricade 244 is arranged in through-hole 253 Pair position.Thus, when being configured to hydraulic pump 254 to be projected into the outside of driver's cabin 7 from through-hole 253, can prevent hydraulic The buffering of pump 254 and hood barricade 244.In addition, due to covering hydraulic pump 254 using hood barricade 244 Front surface, so preventing from heating up caused by the heat dissipation by the engine room in hood 6.

In order to which the rear to hood 6 carries out rotating support, it is arranged in the front surface upper limb of hood barricade 244 Hood support bracket 255.Hood support bracket 251 has the shape for making to be formed after the two edge bending of left and right, and fixed It is mounted on the rear ground plane 245 and side ground plane 246 of hood barricade 244.That is, making hood branch support The back side of frame 255 is connected with rear ground plane 245, and makes the side surface and side ground plane in its right border lateral bend 246 are connected.It is abutted and supporting engine lid 6 in addition, having in the upper end of hood support bracket 255 with hood 6 And the articulated section 263 rotated (referring to Figure 23 and Figure 24).

The lower section of hood 6 thermal insulation board 250 the left and right sides be configured with can stretch pneumatic spring 256, 256.Pair of right and left pneumatic spring 256,256 respective one end (rear end) be rotatably installed in pair of right and left boom support 248, 249 respective rear end sides, pneumatic spring 256, the 256 respective other ends (front end) are rotatably installed in the upper of hood 6 Portion's inner surface.Thus, by lifting the front of hood 6, hood 6 can be made with hood barricade 244 Upper end position is that axis fulcrum carries out opening action, executes the upkeep operation etc. of diesel engine 5.

Hood 6 as shown in Figure 19~Figure 24, front surface central location have radiator grille 231, by headlamp 257, 231 left and right sides is covered in about 258 configurations in front.The top 259 of 6 upside of hood has oblique from front towards rear direction The shape of inclined upward.Space enlargement on the downside of the rear at the top 259 will be received in the engine room inside hood 6 The space for holding waste gas purification apparatus 224 is formed as larger.In addition, hood 6 has open pore 268 in front of both side surface, Cooling wind is introduced by open pore 268 from the left and right sides of hood 6.

By make cover waste gas purification apparatus 224 upside thermal insulation board 250 and hood 6 top 259 fully It separates, forms space, the indoor thermal balance of engine can be well maintained.In addition, in the front surface center of hood 6 Configured with the radiator grille 231 for introducing cooling wind in broad area, so as to which cooling wind is properly supplied engine room It is interior, prevent the heat retention in hood 6.In addition, open pore 268 also is provided in the both side surface of hood 6, so energy The indoor cooling construction of the engine under hood 6 is set to reach best.

It is configured in the broad area on the downside of the left and right rear of hood 6 and starts on the whole surface equipped with punching Hood 232, so outside can will be released to by diesel engine 5 and the warmed-up air of waste gas purification apparatus 224.Another party Face can be improved and be obtained by hood 6 by making the upper end position of hood 232 be located at the lower section of waste gas purification apparatus 224 The heat insulation effect of the waste gas purification apparatus 224 obtained, can carry out regeneration actions at high temperature.

The top 259 of hood 6, which has, is equipped with the shape of notch section 260 in rear, configures at the rear of notch section 260 There is the drive shaft 252 of wiper 251, to utilize the rear portion at the top 259 of hood 6 from the front of hood 6 Cover drive shaft 252.Hood 6 is fixedly installed at the back side at top 259 and is erected at 259 rear portion sides of top in left-right direction Posterior bracket frame 261, and be erected in left-right direction top 259 middle parts middle part stand frame 262.

Back side at top 259 is provided in the central location of posterior bracket frame 261 with can be relative to hood The track component (supporting member) 264 of articulated section 263 is embedded in outside the mode that the articulated section 263 of support bracket 255 is slided.Also, Back side at top 259 is provided in the position in the left side for becoming 263 rear end of articulated section in hood barricade 244 The 245 extended barricade 266 in upside of rear ground plane, and becoming the right side of track component (supporting member) 264 rear end Position is provided with the extended barricade 267 of joint face 246 in hood barricade 244.In addition, in middle part stand frame 262 left and right sides is provided with axis 265, is rotatably installed in the other end (front end) of pneumatic spring 256.

As shown in Figure 11~Figure 18, fuel tank 11 includes configuration in the downside of the bottom plate 40 of driver's cabin 7 and compares pair of right and left The left side fuel tank 11L and right side fuel tank 11R of pedal 10 and rear wheel 4 position of (11 side of body rack) in the inner part. Left side fuel tank 11L and right side fuel tank 11R assignment configuration in a manner of clamping a pair of of body rack 14 or so.That is, left side The forward portion of fuel tank 11L configures between left side body rack 14 and left pedal 10, and rear is partly arranged at left side Between body rack 14 and left rear frame wheel 4.Equally, the forward portion of right side fuel tank 11R is configured in right side body rack 14 Between right-side pedal 10, and rear is partly arranged between right side body rack 14 and right side rear wheel 4.A pair of of left side fuel The capacity of case 11L and right side fuel tank 11R are different, using be connected to fuel communicating pipe 281 on the left of a pair fuel tank 11L with And the lower section of right side fuel tank 11R, and fuel tank 11L and right side fuel tank on the left of a pair are connected to using air communication pipe 282 The top of 11R.

The biggish left side fuel tank 11L of capacity has that covered the front side of left pedal 10 in the front of driver's cabin 7 The shape of sample has oil-feed port 283 in the front side upper surface of pedal 10.That is, left side fuel tank 11L is configured to surround left pedal 10 right side and front side.Since the oil-feed port 283 that will be arranged on the fuel tank 11L of left side configures near left pedal 10 Position mitigates fuel feeding operation so driver can step on left pedal 10 and carry out the fuel feeding operation into fuel tank 11.Separately Outside, the configuration of fuel tank 11 is in the position than pedal 10 and rear wheel 4 in the inner part, so can be avoided and the object on the outside of body Direct collision can prevent the breakage etc. of fuel tank 11.

The lesser right side fuel tank 11R of capacity is equipped with recessed portion 284 in front, and being configured in the front side of recessed portion 284 will Fuel in fuel tank 11 is supplied to the pump of the fuel pressurized delivered in diesel engine 5 213.It is erect using from fuel tank bracket 18 The plate 285 of setting covers the periphery of fuel pressurized delivered pump 213 and upside, to protect fuel pressurized delivered to pump 213.Fuel Pressurized delivered pump 213 is by the plate 285 and right side fuel tank 11R for covering the rear of fuel pressurized delivered pump 213 and top Recessed portion 284 be connected.Fuel pressurized delivered pump 213 is connected with left side fuel tank 11L, and with diesel engine 5 Fuel filter 209 is connected.The biggish left side fuel tank 11L of self-capacity pumps 213 for fuel via fuel pressurized delivered as a result, It is supplied in diesel engine 5.

Fuel tank 11 the left and right assignment configuration of travel machine body 2 have capacity it is mutually different a pair on the left of fuel tank 11L and Right side fuel tank 11R is connected to fuel tank 11L and right side fuel tank 11R on the left of this pair using fuel communicating pipe 281.In capacity The toe lateral of biggish left side fuel tank 11L is equipped with oil-feed port 283, and sets in the front of the lesser right side fuel tank 11R of capacity There is recessed portion 284, in recessed portion 284 configured with fuel pressurized delivered pump 213.Also, add from left side fuel tank 11L via fuel Pressure delivery pump 213 supplies fuel in diesel engine 5.Thereby, it is possible to will be fired as far as possible by left side fuel tank 11L and right side The fuel tank 11 that hopper 11R is constituted is formed as large capacity, while can ensure leaning on by the configuration position that fuel pressurized delivered pumps 213 The position of nearly diesel engine 5.

Fuel tank 11 is positioned in the downside of body rack 15 towards on the fuel box bracket 18 stretched out to the left and right, and by Band 286 is fixed.Fuel box bracket 18 using suspension be fixed on left and right body rack 15 on front side boom support 287, be fixed on The rear side boom support 288 of the lower surface of gearbox 17 and be fixed on boom support 287, the left and right fuel tank at 288 respective both ends is taken It carries and uses plate 289,290, be formed as looking up the shape for rectangle frame plate.The fuel tank carrying plate 289,290 of left and right has respectively Have with left side fuel tank 11L and the respective bottom shape same shape of right side fuel tank 11R, using band 286 will carry It sets and ties up fixation at the respective front and back 2 left side fuel tank 11L and right side fuel tank 11R on surface on it.

The front of pair of right and left body rack 15 and the rear portion of pair of right and left engine support 14 are connected respectively.It utilizes Front and back a pair of boom support 287,288, the bearing from below that gearbox 17 is configured between the rear portion of two body racks 15 is left The fuel box bracket (fuel tank support plate) 18 of side fuel tank 11L and right side fuel tank 11R links.Make each boom support 287, 288 are connected with two body racks 15 and gearbox 17 from below respectively.

In addition, the structure of each section in the present invention is not limited to embodiment illustrated, the present invention can not departed from Purport in the range of make various changes.

Description of symbols

1, tractor；2, travel machine body；3, front vehicle wheel；4, rear wheel；5, engine；6, hood；7, driver's cabin； 10, pedal；11, fuel tank；11L, left side fuel tank；11R, right side fuel tank；12, front bumper；14, engine support；15, Body rack；26, flywheel；203, inlet manifold；204, exhaust manifold；206, cooling fan；209, fuel filter；213, it fires Expect pressurized delivered pump；224, waste gas purification apparatus；227, exhaust pipe；231, radiator grille；232, hood；236, beam is used in bearing Bracket；237, engine mounting bracket；242, left side strut bracket；243, right side strut bracket；244, hood barricade； 245, rear ground plane；246, side ground plane；247, joint face；248, boom support；249, boom support；250, thermal insulation board； 251, wiper；252, drive shaft；253, through-hole；254, hydraulic pump；255, hood support bracket；256, pneumatic spring； 259, top；260, notch section；261, posterior bracket frame；262, middle part stand frame；263, articulated section；264, supporting member； 265, axis；266, barricade (left side)；267, barricade (right side)；268, open pore；283, oil-feed port；284, recessed portion；285, plate.

Claims (1)

1. a kind of working truck has the engine for the front for being mounted in travel machine body and carries out to the exhaust gas of the engine net The after-treatment device of change covers the engine and the after-treatment device using hood, wherein

The after-treatment device is parallel with the output shaft of the engine and extends longlyer in front-rear direction,

The after-treatment device is mounted in the upper side of the engine, the after-treatment device is made to be located at the hood Rear inner part,

It is configured with thermal insulation board, between the hood and the after-treatment device to cover the after-treatment device and exhaust The top of pipe,

There is the working truck configuration after-treatment device is at least covered from the back side in the back side of the hood Hood barricade and surround cooling fan fan guard,

The thermal insulation board is set to boom support, which sets up between the hood barricade and the fan guard,

The pneumatic spring that can be stretched is configured in the lower section of the hood, one end of the pneumatic spring is rotatably pacified Mounted in the boom support, the other end of the pneumatic spring is rotatably mounted in the hood,

By lifting the front of the hood, make the hood with the upper end position of the hood barricade It is rotated for axis fulcrum.