CN102923112B - Long head 4 wheel driven engineering truck - Google Patents
Long head 4 wheel driven engineering truck Download PDFInfo
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- CN102923112B CN102923112B CN201110224931.6A CN201110224931A CN102923112B CN 102923112 B CN102923112 B CN 102923112B CN 201110224931 A CN201110224931 A CN 201110224931A CN 102923112 B CN102923112 B CN 102923112B
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Abstract
The present invention proposes a kind of long head 4 wheel driven engineering truck, comprise vehicle frame, be arranged on the engine assembly below described vehicle frame and auxiliary gear box assembly, be arranged on the front axle assy of described vehicle frame lower front and be arranged on the back axle assembly of described vehicle frame lower rear, and multiple wheel, described engine assembly is connected to the input end of described auxiliary gear box assembly by change speed gear box, the mouth of described auxiliary gear box assembly connects described front axle assy and described back axle assembly respectively by front and back transmission shaft, described wheel is separately positioned on the propons of described front axle assy and the back axle two ends of described back axle assembly, the brake system of described long head 4 wheel driven engineering truck is Pneumatic braking system.This long head 4 wheel driven engineering truck, adopts Pneumatic braking system, and its braking reliability energy and comfort property are obviously better than hydraulic braking.
Description
Technical field
The invention relates to a kind of 4 wheel driven engineering truck, and particularly about one long head 4 wheel driven engineering truck.
Background technology
At present, various engineering truck is widely used in the every field such as construction, construction and transport.
The type of drive of engineering truck generally includes two-wheel drive and four wheel drive.Wherein, two-wheel drive is divided into again f-w-d and back-wheel drive, but no matter is adopt the vehicle of f-w-d mode or adopt the vehicle of back-wheel drive mode, and be all more suitable for travelling under comparatively smooth road conditions, grade climbing performance is poor.And various engineering truck often all will travel under non-rice habitats condition, such as building ground, camp site, transport class engineering truck also usually will travel under the condition such as mountain area or sand ground.Therefore, various engineering truck also often adopts four wheel drive mode.
So-called four wheel drive, refers to that automobile front and back wheel is all dynamic, on wheels all before and after can being distributed in by different proportion by engine output torque by travelling pavement state difference, to improve the driveability of automobile.Four wheel drive is divided into again time sharing and AWD.Wherein, time sharing is that a kind of driver can drive two the four-wheel drive system manually selected between 4 wheel driven, by chaufeur according to surface conditions, changes two-wheel drive or four wheel drive pattern by being switched on or switched off part-time case.The most significant advantage of this type of drive can choose drive pattern according to actual conditions, both economical.When highway travels, driver can choice for use two-wheel drive shelves; When running into the road conditions such as mountain area or sand ground, driver can choice for use four wheel drive shelves, enhance the adhesive ability of vehicle and handling.The vehicle front and back wheel of AWD is adopted forever to maintain four wheel drive pattern.
But the existing long head 4 wheel driven engineering truck of China adopts hydraulic brake system usually.The advantage of hydraulic braking has: effect is shorter for delay time; Operation pressure is high; Mechanical efficiency is higher.But hydraulic braking also exists obvious shortcoming, such as hydraulic braking brake is sensitive not; Part requirements precision is very high is not easy maintenance; Hydraulic braking long-time braking under car load case of heavy load was easily lost efficacy; Effort is handled in hydraulic braking easily makes chaufeur tired out.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of long head 4 wheel driven engineering truck, adopt Pneumatic braking system, its braking reliability energy and comfort property are obviously better than hydraulic braking.And this Pneumatic braking system is air-cut-off break Pneumatic braking system, adopt energy storage spring parking brake, parking usefulness is good, control comfort, and actuating force is little, hillside fields parking excellent effect.
Long head 4 wheel driven engineering truck of the present invention, comprise vehicle frame, be arranged on the engine assembly below described vehicle frame and auxiliary gear box assembly, be arranged on the front axle assy of described vehicle frame lower front and be arranged on the back axle assembly of described vehicle frame lower rear, and multiple wheel, described engine assembly is connected to the input end of described auxiliary gear box assembly by change speed gear box, the mouth of described auxiliary gear box assembly connects described front axle assy and described back axle assembly respectively by front and back transmission shaft, described wheel is separately positioned on the propons of described front axle assy and the back axle two ends of described back axle assembly, the brake system of described long head 4 wheel driven engineering truck is Pneumatic braking system.
In one embodiment of the invention, aforesaid Pneumatic braking system is air-cut-off break Pneumatic braking system.
In one embodiment of the invention, aforesaid Pneumatic braking system comprises air compressor, electromagnetic valve, pressure regulating valve, wet air receiver, at least two air receivers, at least two low pressure alarms being connected with described air receiver respectively, and many pipelines.
In one embodiment of the invention, aforesaid electromagnetic valve and described low pressure alarm from the chassis power supply power taking of long head 4 wheel driven engineering truck, and form close circuit.
In one embodiment of the invention, aforesaid air compressor, pressure regulating valve, wet air receiver successively gas circuit connect, and described Pneumatic braking system also comprises protective valve, and described wet air receiver is connected with each described air receiver gas circuit by described protective valve.
In one embodiment of the invention, aforesaid Pneumatic braking system also comprises gas storage energy spring air chamber, and described gas storage energy spring air chamber is connected with a described air receiver gas circuit.
In one embodiment of the invention, aforesaid long head 4 wheel driven engineering truck also comprises braking during standstill execution unit, and the air receiver be connected with described gas storage energy spring air chamber is connected with described braking during standstill execution unit gas circuit.
In one embodiment of the invention, aforesaid long head 4 wheel driven engineering truck also comprises service brake execution unit, and the air receiver be not connected with described gas storage energy spring air chamber is connected with described service brake execution unit gas circuit.
In one embodiment of the invention, aforesaid engine assembly comprises engine sump tank, and described engine sump tank is the inverted shape of a saddle, is depressed part in the middle part of it, and the thickness of described depressed part is less than the thickness at described engine sump tank two ends.
In one embodiment of the invention, aforesaid vehicle frame front upper is provided with operator's compartment assembly, in described operator's compartment assembly front portion, bumper/spoiler assembly is also installed, described vehicle frame rear upper is provided with container assembly, described container assembly is Dump cargo tank, below box assembly got in stocks by described vehicle frame, be also provided with self-discharging hydraulic device.
The invention has the beneficial effects as follows, adopt this long head 4 wheel driven engineering truck, ensureing relevant performance perameter and cargo capacity, under meeting the prerequisite of frame strength, complete vehicle weight, car load center of gravity being reduced, reduces productive costs and customer using cost simultaneously.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of specification sheets, and can become apparent to allow above and other objects of the present invention, feature and advantage, below especially exemplified by embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the layout schematic diagram of the preferred embodiment of the present invention's long head 4 wheel driven engineering truck.
Fig. 2 is the layout schematic diagram on the chassis of the preferred embodiment of the present invention's long head 4 wheel driven engineering truck.
Fig. 3 is the module map of the Pneumatic braking system of the preferred embodiment of the present invention's long head 4 wheel driven engineering truck.
Detailed description of the invention
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to the long head 4 wheel driven engineering truck detailed description of the invention proposed according to the present invention, structure, feature and effect thereof, be described in detail as follows:
Aforementioned and other technology contents, Characteristic for the present invention, can know and present in the detailed description of following cooperation with reference to graphic preferred embodiment.By the explanation of detailed description of the invention, when can to the present invention for the technological means reaching predetermined object and take and effect obtain one more deeply and concrete understanding, however institute's accompanying drawings be only to provide with reference to and the use of explanation, be not used for being limited the present invention.
Please refer to shown in Fig. 1, in the present embodiment, the long head 4 wheel driven engineering truck of the embodiment of the present invention is dumping car.
This long head 4 wheel driven engineering truck comprises vehicle frame 1, be arranged on the operator's compartment assembly 11 of vehicle frame 1 front upper, be arranged on the container assembly 12 of vehicle frame 1 rear upper, be arranged on the engine assembly 13 of vehicle frame 1 anterior operator's compartment assembly 11 lower front, be arranged on the change speed gear box 14 at engine assembly 13 rear portion below vehicle frame 1, be arranged on the auxiliary gear box assembly 16 of below in the middle part of vehicle frame 1, be arranged on the front axle assy 17 of vehicle frame 1 lower front, be arranged on the back axle assembly 18 of vehicle frame 1 lower rear, be separately positioned on the wheel 19 at front axle assy 17 and back axle assembly 18 two ends, and the Pneumatic braking system 15(be arranged on below vehicle frame 1 is shown in Fig. 3).
Operator's compartment assembly 11 comprises body shell cab body (figure does not mark), is provided with cabin interior accessory (not shown), generally includes panel assembly, bearing circle and column assy thereof, seat, various pedals etc. in body shell cab body.In operator's compartment assembly 11 front portion, bumper/spoiler assembly 111 is also installed, to form crash protection to this long head 4 wheel driven engineering truck.Stretcher 112 is provided with in vehicle frame 1 both sides that is operator's compartment assembly 11 down either side.
Container assembly 12 is Dump cargo tank in the present embodiment, be therefore also provided with below box assembly 12 got in stocks by vehicle frame 1 in order to by anterior for container assembly 12 jack-up in case unloading self-discharging hydraulic device 121.
Engine assembly 13 comprises driving engine related accessories as (not shown) such as radiator, intercooler, freeing pipe, noise silencers.Engine assembly 13 is connected to the input end of auxiliary gear box assembly 16 by change speed gear box 14.Below engine assembly 13, above front axle assy 17, be provided with engine sump tank 134.In the present embodiment, engine sump tank 134 is in the inverted shape of a saddle, and one end thickness is less, is equipped with gear in it, and other end thickness is comparatively large, and its inherent engineering truck normal operating condition has fuel oil.Depression (not shown) is provided with at the middle part of engine sump tank 134, the thickness of this depression had both been less than the larger end of engine sump tank 134 thickness, also be less than the end that engine sump tank 134 thickness is less, that is the thickness of this depression is less than the thickness at engine sump tank 134 two ends.Like this, just reduce the height that engine sump tank 134 takies required in engineering truck, the depression of engine sump tank 134 abdicates certain space to front axle assy 17, thus reduces power line and the car load height of gravitational center of this project car.
In operator's compartment assembly 11 lower front, engine assembly 13 adjacent position is also provided with the water tank 136 in order to cooled engine assembly 13, to ensure that engine assembly 13 has good operational effect in motion.
In the present embodiment, engine assembly 13 is arranged on vehicle frame 1 anterior operator's compartment assembly 11 lower front, operator's compartment assembly 11 place of long head 4 wheel driven engineering truck is prepended to by engine assembly 13, car load center of gravity can be reduced, thus effectively improve reliability and safety that long head 4 wheel driven engineering truck travels under road conditions and non-rice habitats condition.
Auxiliary gear box assembly 16 is a kind of distributing means for power supply conventional on four wheel drive engineering truck, and it is generally two grades of part-time cases, and comprises multiple mouth.The mouth of auxiliary gear box assembly 16 connects front axle assy 17 and back axle assembly 18 respectively by front and back transmission shaft 162.Usually, when auxiliary gear box assembly 16 forerunner shelves are in separated position, auxiliary gear box assembly 16 can pass through rear transfer axle 162 by power transmission to back axle assembly 18, forerunner does not do work, rear-guard state that Here it is, in this case, the moving velocity of engineering truck is very fast, is applicable to comparatively smooth road conditions.When auxiliary gear box assembly 16 forerunner shelves are in merging phase, auxiliary gear box assembly 16 can respectively by front and back transmission shaft 162 by power transmission to front axle assy 17 and back axle assembly 18,4 wheel driven state that Here it is, in this case, front axle assy 17 and back axle assembly 18 drive simultaneously, strengthen hill climbing ability and crossing ability, be applicable to the non-rice habitats such as mountain area, sand ground condition.
Propons in front axle assy 17 is rigid drive axle.Between front axle assy 17 and vehicle frame 1, be provided with steel spring 172, front axle assy 17 is fixed on vehicle frame 1 by steel spring 172.Two wheels 19 are respectively provided with at front axle assy 17 two ends
Back axle assembly 18 is similarly rigid drive axle.Between back axle assembly 18 and vehicle frame 1, be provided with steel spring 182, back axle assembly 18 is fixed on vehicle frame 1 in the mode that industry is conventional by steel spring 182.Two wheels 19 are respectively provided with at back axle assembly 18 two ends.
Please with reference to Fig. 1, shown in Fig. 2 and Fig. 3, the Pneumatic braking system 15 of the long head 4 wheel driven engineering truck of the embodiment of the present invention is air-cut-off break Pneumatic braking system, it comprises the air compressor 150 being arranged on vehicle frame 1 anterior operator's compartment assembly 11 lower front engine assembly 13 sidepiece, be arranged on the electromagnetic valve 151 of vehicle frame 1 right vertical beam near front axle assy 17 place, be arranged on the pressure regulating valve 152 in the middle part of the left longeron of vehicle frame 1, be arranged on the wet air receiver 153 in the middle part of the left longeron of vehicle frame 1, the protective valve 154 be connected with wet air receiver 153, three air receivers 155, 156, 157 and respectively with three air receivers 155, 156, 157 three low pressure alarms 1581 be connected, 1582, 1583, be arranged on the gas storage energy spring air chamber 159 of back axle assembly 18 rear end, and some pipelines.
Electromagnetic valve 151 and three low pressure alarms 1581,1582,1583 from the chassis power supply power taking of long head 4 wheel driven engineering truck, and can form close circuit.
Air compressor 150, pressure regulating valve 152, wet air receiver 153, first air receiver 155 successively gas circuit connect, and wet air receiver 153 is also connected with the second air receiver 156 and the 3rd air receiver 157 gas circuit.3rd air receiver 157 is connected with gas storage energy spring air chamber 159 gas circuit.
Pressure regulating valve 152, for regulating compressed-air actuated pressure in supply air line, makes it to remain in the range of pressure of regulation.
Protective valve 154 can be four-loop protection valve.Wet air receiver 153 is connected with the first air receiver 155, second air receiver 156 and the 3rd air receiver 157 gas circuit by protective valve 154.
First air receiver 155 and the second air receiver 156 are arranged on vehicle frame 1 two side legs pedal 112 place, and are connected with service brake execution unit gas circuit respectively, to control the operation of service brake execution unit.First air receiver 155 can be connected with front wheel brake execution unit gas circuit, and front wheel brake execution unit can comprise brake activation valve, propons left and right air chamber, connecting rod mechanism, brake strap and brake wheel (not shown).Second air receiver 156 can be connected with rear service brake execution unit gas circuit, and rear service brake execution unit can comprise brake activation valve, back axle left and right air chamber, connecting rod mechanism, brake strap and brake wheel (not shown).
3rd air receiver 157 is arranged on vehicle frame 1 transom beam.3rd air receiver 157 is connected with braking during standstill execution unit gas circuit by gas storage energy spring air chamber 159, to control the operation of braking during standstill execution unit.Braking during standstill execution unit can comprise brake activation valve, connecting rod mechanism, front and back wheel brake strap and brake wheel.
The braking principle of brief description Pneumatic braking system 15.After the long head 4 wheel driven engineering truck car load motion of the embodiment of the present invention, engine assembly 15 works, and reaches certain air pressure (being such as 0.7MPa) by air compressor 150 pairs of pipelines and three air receiver 155,156,157 inflations.When service brake, chaufeur steps on brake pedal, and the pressurized air of the first air receiver 155 and the second air receiver 156 is actuated service brake execution unit and performed braking, thus makes the long head 4 wheel driven engineering truck braking brake of the embodiment of the present invention.During braking during standstill, pilot control hand control valve (HCV) handle moves backward, brake activation valve Exhaust Open, make gas in the gas storage energy spring air chamber 159 be attached thereto discharged to air, spring reset in gas storage energy spring air chamber 159 produces thrust, promotes connecting rod mechanism movement, and then promotion front and back wheel brake strap is opened outward, produce friction force with brake wheel and stop vehicle wheel rotation, thus make automobile be in parked state and cannot start.
In other embodiment of the present invention's long head 4 wheel driven engineering truck, auxiliary gear box assembly 16 also can be part-time case between fixed type bridge, and that is this long head 4 wheel driven engineering truck only has one pair to drive pattern, is also AWD engineering truck.Container assembly 12 may not be Dump cargo tank, but freight platform or van-type carriage etc.Also can not establish container assembly 12 at vehicle frame 1 rear, but arrange the equipment of other composition required for engineering truck, as truck-mounted crane, puddle mixer etc., make the present invention's long head 4 wheel driven engineering truck can be the known engineering truck of various industry.
In sum, the present invention's long head 4 wheel driven engineering truck adopts Pneumatic braking system, and its braking reliability energy and comfort property are obviously better than hydraulic braking.And this Pneumatic braking system is air-cut-off break Pneumatic braking system, adopt energy storage spring parking brake, parking usefulness is good, control comfort, and actuating force is little, hillside fields parking excellent effect.
The above, only embodiments of the invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (7)
1. one kind long head 4 wheel driven engineering truck, comprise vehicle frame, be arranged on the engine assembly below described vehicle frame and auxiliary gear box assembly, be arranged on the front axle assy of described vehicle frame lower front and be arranged on the back axle assembly of described vehicle frame lower rear, and multiple wheel, described engine assembly is connected to the input end of described auxiliary gear box assembly by change speed gear box, the mouth of described auxiliary gear box assembly connects described front axle assy and described back axle assembly respectively by front and back transmission shaft, described wheel is separately positioned on the propons of described front axle assy and the back axle two ends of described back axle assembly, it is characterized in that, the brake system of described long head 4 wheel driven engineering truck is Pneumatic braking system, described Pneumatic braking system is air-cut-off break Pneumatic braking system, described Pneumatic braking system comprises air compressor, electromagnetic valve, pressure regulating valve, wet air receiver, at least two air receivers, at least two low pressure alarms be connected with described air receiver respectively, and many pipelines, described wet air receiver is connected with described at least two air receivers and described electromagnetic valve gas circuit respectively, described engine assembly comprises engine sump tank, be arranged on above described front axle assy, described engine sump tank is the inverted shape of a saddle, it is depressed part in the middle part of it, the thickness of described depressed part is less than the thickness at described engine sump tank two ends, described depressed part abdicates certain space to described front axle assy, thus reduce power line and the car load height of gravitational center of long head 4 wheel driven engineering truck.
2. long head 4 wheel driven engineering truck according to claim 1, is characterized in that: described electromagnetic valve and described low pressure alarm from the chassis power supply power taking of long head 4 wheel driven engineering truck, and form close circuit.
3. long head 4 wheel driven engineering truck according to claim 2; it is characterized in that: described air compressor, pressure regulating valve, wet air receiver successively gas circuit connect; described Pneumatic braking system also comprises protective valve, and described wet air receiver is connected with each described air receiver gas circuit by described protective valve.
4. the long head 4 wheel driven engineering truck according to Claims 2 or 3, is characterized in that: described Pneumatic braking system also comprises gas storage energy spring air chamber, described gas storage energy spring air chamber is connected with a described air receiver gas circuit.
5. long head 4 wheel driven engineering truck according to claim 4, is characterized in that: described long head 4 wheel driven engineering truck also comprises braking during standstill execution unit, and the air receiver be connected with described gas storage energy spring air chamber is connected with described braking during standstill execution unit gas circuit.
6. long head 4 wheel driven engineering truck according to claim 4, is characterized in that: described long head 4 wheel driven engineering truck also comprises service brake execution unit, and the air receiver be not connected with described gas storage energy spring air chamber is connected with described service brake execution unit gas circuit.
7. long head 4 wheel driven engineering truck according to claim 1, it is characterized in that: described vehicle frame front upper is provided with operator's compartment assembly, in described operator's compartment assembly front portion, bumper/spoiler assembly is also installed, described vehicle frame rear upper is provided with container assembly, described container assembly is Dump cargo tank, below box assembly got in stocks by described vehicle frame, be also provided with self-discharging hydraulic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110224931.6A CN102923112B (en) | 2011-08-08 | 2011-08-08 | Long head 4 wheel driven engineering truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110224931.6A CN102923112B (en) | 2011-08-08 | 2011-08-08 | Long head 4 wheel driven engineering truck |
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| Publication Number | Publication Date |
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| CN102923112A CN102923112A (en) | 2013-02-13 |
| CN102923112B true CN102923112B (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110224931.6A Active CN102923112B (en) | 2011-08-08 | 2011-08-08 | Long head 4 wheel driven engineering truck |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105774792B (en) * | 2016-05-23 | 2018-11-09 | 明君汽车有限公司 | Automobile-used Pneumatic braking system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458021A (en) * | 2003-06-06 | 2003-11-26 | 李玉喜 | Double safety balance braking system |
| CN201457355U (en) * | 2009-06-12 | 2010-05-12 | 鲁英杰 | Air-pressure brake parking device of disc type tractor assembly |
| CN201784464U (en) * | 2010-09-15 | 2011-04-06 | 北汽福田汽车股份有限公司 | Long-head four-wheel drive vehicle |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6317117A (en) * | 1986-07-07 | 1988-01-25 | Fuji Heavy Ind Ltd | Drive force change-over device for four wheel drive vehicle provided with free wheel |
| CN2696900Y (en) * | 2004-03-26 | 2005-05-04 | 白城市北方汽车配件有限责任公司 | Four-wheel driven mdoified transmission machine of tractor |
| CN201736810U (en) * | 2010-06-23 | 2011-02-09 | 北汽福田汽车股份有限公司 | Vehicle chassis and engineering vehicle comprising same |
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2011
- 2011-08-08 CN CN201110224931.6A patent/CN102923112B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458021A (en) * | 2003-06-06 | 2003-11-26 | 李玉喜 | Double safety balance braking system |
| CN201457355U (en) * | 2009-06-12 | 2010-05-12 | 鲁英杰 | Air-pressure brake parking device of disc type tractor assembly |
| CN201784464U (en) * | 2010-09-15 | 2011-04-06 | 北汽福田汽车股份有限公司 | Long-head four-wheel drive vehicle |
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| CN102923112A (en) | 2013-02-13 |
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