CN102991347B - Engineering truck and driving driving system thereof - Google Patents
Engineering truck and driving driving system thereof Download PDFInfo
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- CN102991347B CN102991347B CN201210493033.5A CN201210493033A CN102991347B CN 102991347 B CN102991347 B CN 102991347B CN 201210493033 A CN201210493033 A CN 201210493033A CN 102991347 B CN102991347 B CN 102991347B
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Abstract
The invention discloses a kind of engineering truck and drive system thereof.This drive system comprises: driving engine; The Hydraulic Pump be connected with driving engine; The hydraulic ram being stretched out by described hydraulic pump drive and regained; Be arranged on the transfer device between described hydraulic ram and drive wheel, described transfer device is used for the linear reciprocating motion of described hydraulic ram to be converted to rotary motion.Driving driving system provided by the invention is without the need to using baroque CD-ROM drive motor, and hydraulic ram has that structure is simple, power transmission efficiency and the high advantage of reliability.Therefore, driving driving system cost provided by the invention is lower, and kinetic energy rejection is little, and later period maintenance is simple, and reliability of service is higher.
Description
Technical field
The present invention relates to engineering machinery field, particularly a kind of engineering truck and driving driving system thereof.
Background technology
In recent years, along with the quickening of industrial construction process, the application of engineering truck is further extensive.The speed of vehicle also needs to promote accordingly, and this has higher requirement to the reliability of the driving driving system of engineering truck.
At present, the driving driving system of engineering truck mainly contains three kinds of modes, is respectively mechanical drive, hydraulic mechanical and hydrostatic column pressure transmission.Wherein, mechanically operated power transmission line is: driving engine-mechanical gear box-drive axle-tandem-driving bogie-drive wheel, and it is simple that this kind drives driving system to have structure, easily manufactured, the advantage that machinery driving efficiency is high.The power transmission line of hydraulic mechanical is: driving engine-turbine transformer-mechanical gear box-drive axle-tandem-driving bogie-drive wheel, relative to mechanical drive, this kind of transfer mode is owing to adding turbine transformer, gearbox-gear can suitably be reduced, and then be convenient to chaufeur skilled worker energy manipulation work decoration, make the speed of a motor vehicle automatically adapt to load variations.The power transmission line of hydrostatic column pressure transmission is: driving engine-Hydraulic Pump-HM Hydraulic Motor-tandem-driving bogie-drive wheel, and relative to hydraulic mechanical, this kind of mode, according to the various combination of pump and motor, can make machinery obtain different tractive propertys.But this kind drives the defect of driving system to be: complex structure, and be not easy to maintenance, reliability also has much room for improvement.
Summary of the invention
In view of this, it is simple that the present invention proposes a kind of structure, for ease of maintenaince, and the driving driving system that reliability is high.
The invention provides a kind of driving driving system, comprising: driving engine; The Hydraulic Pump be connected with described driving engine; The hydraulic ram being stretched out by described hydraulic pump drive and regained; Be arranged on the transfer device between described hydraulic ram and drive wheel, described transfer device is used for the linear reciprocating motion of described hydraulic ram to be converted to rotary motion; Be arranged at the reversing arrangement between described Hydraulic Pump and described hydraulic ram, described reversing arrangement is for controlling stretching out and regaining of described hydraulic ram; Described reversing arrangement comprises: the first oil circuit communicated with oil outlet and described hydraulic ram one end hydraulic fluid port of described Hydraulic Pump; The second oil circuit communicated with return opening and the described hydraulic ram other end hydraulic fluid port of described Hydraulic Pump; Be arranged on the change-over valve on described first oil circuit and described second oil circuit, described change-over valve has three kinds of mode of operations, and when described change-over valve is in the first mode of operation, described first oil circuit is as oil feeding line, and described second oil circuit is as oil return circuit; When described change-over valve is in the second mode of operation, described first oil circuit and the equal stop control lever of the second oil circuit and oil return; When described change-over valve is in the 3rd mode of operation, described first oil circuit is as oil return circuit, and described second oil circuit is as oil feeding line.
Further, described driving driving system also comprises tandem-driving bogie, and described tandem-driving bogie is arranged between described transfer device and described drive wheel.
Further, described change-over valve is solenoid directional control valve.
Further, the number of described hydraulic ram is multiple.
Further, described drive wheel is front wheel driving driving wheel or back-wheel drive wheel.
Further, described transfer device is crank block device.
The present invention also provides a kind of engineering truck, and it is provided with the driving driving system described in above-mentioned any one.
Further, described engineering truck is road grader.
The invention provides a kind of driving driving system, this Operation system setting has driving engine, Hydraulic Pump, hydraulic ram and transfer device.Relative to existing driving driving system, driving driving system provided by the invention is without the need to using baroque CD-ROM drive motor.Relative to CD-ROM drive motor, hydraulic ram has that structure is simple, power transmission efficiency and the high advantage of reliability.Therefore, driving driving system cost provided by the invention is lower, and kinetic energy rejection is little, and later period maintenance is simple, and reliability of service is higher.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
The structural representation of the driving driving system that Fig. 1 provides for the embodiment of the present invention 1;
The structural representation of the driving driving system that Fig. 2 provides for the embodiment of the present invention 2;
The structural representation of the driving driving system that Fig. 3 provides for the embodiment of the present invention 3.
Description of reference numerals:
1 driving engine 2 Hydraulic Pump
3 change-over valve 4 hydraulic rams
The right hydraulic ram of 41 left hydraulic ram 42
5 drive wheel 51 left driving wheels
52 right drive wheel 6 transfer devices
61 left-hand rotation changing devices 62 are turned right changing device
7 tandem-driving bogies
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
Below in conjunction with accompanying drawing, each preferred embodiment of the present invention is described further.
Fig. 1 shows the driving driving system that the embodiment of the present invention 1 provides, and this driving driving system is used for engineering truck.This driving driving system comprises: driving engine 1, Hydraulic Pump 2, reversing arrangement, hydraulic ram 4, transfer device 6 and drive wheel 5.Wherein,
Hydraulic Pump 2 is connected with driving engine 1;
Hydraulic Pump 2 drives hydraulic ram 4 stretch out and regain;
Transfer device 6 is arranged between hydraulic ram 4 and drive wheel 5, and this transfer device 6 is for being converted to rotary motion by the linear reciprocating motion of hydraulic ram 4;
This reversing arrangement is used for stretching out and regaining of hydraulic control oil cylinder 4, and this reversing arrangement comprises:
The the first oil circuit a communicated with oil outlet and hydraulic ram one end of Hydraulic Pump 2;
The the second oil circuit b communicated with return opening and the hydraulic ram other end of Hydraulic Pump 2;
Be arranged on the change-over valve 3 on the first oil circuit a and the second oil circuit b, this change-over valve 3 has three kinds of mode of operations, and when change-over valve 3 is in the first mode of operation, the first oil circuit a is as oil feeding line, and the second oil circuit b is as oil return circuit; Under second mode of operation, the first oil circuit a and the equal stop control lever of the second oil circuit b and oil return; Under 3rd mode of operation, the first oil circuit a is as oil return circuit, and the second oil circuit b is as oil feeding line.
The principle of work of the driving driving system that the present embodiment provides is as follows:
Open driving engine 1, driven by engine Hydraulic Pump 2 rotates, and in this process, mechanical energy is converted to hydraulic energy;
Hydraulic Pump 2 is hydraulic ram 4 fuel feeding and oil return, and by reversing arrangement, hydraulic ram 4 is linearly moved reciprocatingly, and in this process, hydraulic energy is converted to mechanical energy;
The linear reciprocating motion of hydraulic ram 4 is converted to rotary motion by transfer device 6, and then drives drive wheel 5 to rotate, and in this process, the mechanical energy of straight-line motion is converted to rotary motion mechanical energy, and then reaches the effect driving wheels travel.
In the present embodiment, the number of hydraulic ram 4 is one, and it is connected with the drive wheel 5 on engineering truck side (left side or right side).In the present invention, the number of hydraulic ram 4 is preferably two or more, for being connected with the drive wheel on right side with on the left of engineering truck.
In addition, it will be understood by those skilled in the art that hydraulic ram 4 can be connected with the drive wheel of front-wheel by transfer device 6, also can be connected with the drive wheel of trailing wheel by transfer device 6.Those skilled in the art can select according to concrete operating mode and condition of loading.
The effect of above-mentioned transfer device is: the straight-line motion of Hydraulic Pump oil cylinder 4 is converted to rotary motion, and then realizes hydraulic ram 4 and drive drive wheel to rotate.Consider that hydraulic component structure is comparatively complicated, in the embodiment of the present invention, transfer device is preferably mechanical switching device, specifically can adopt the structures such as crank block structure well known to those skilled in the art.According to crank block structure, then one end of crank and hydraulic ram 4 hinged, slide block and drive wheel hinged.
It will be understood by those skilled in the art that the two ends of above-mentioned hydraulic ram are respectively rod chamber and the rodless cavity of hydraulic ram.For Fig. 1, the first oil circuit a communicates with the rodless cavity of hydraulic ram, and the second oil circuit b communicates with the rod chamber of hydraulic ram, and change-over valve 3 is three position four-way directional control valve, and transfer device is slider-crank mechanism is example, and the control process of reversing arrangement is:
When needs vehicle advances, control three position four-way directional control valve and be in upper, Hydraulic Pump 2 is by the rodless cavity fuel feeding of the first oil circuit a to hydraulic ram 4, and the hydraulic oil in hydraulic ram 4 rod chamber is by the second oil circuit b oil return; The piston rod of hydraulic ram 4 stretches out, and be converted to the kinetic energy that drive wheel is rotated forward by transfer device, drive wheel rotates half cycle forward; Then, control three position four-way directional control valve and be in bottom, Hydraulic Pump 2 is by the rod chamber fuel feeding of the second oil circuit b to Hydraulic Pump 2, and the hydraulic oil in hydraulic ram 4 rodless cavity is by the first oil circuit a oil return; The piston rod of hydraulic ram 4 is regained, and drive wheel continues to rotate half cycle forward, completes wheel thus and rotates forward one week.So repeatedly just can realize the advance of vehicle.
When needs vehicle rollback, control three position four-way directional control valve line and be in bottom, control three position four-way directional control valve after vehicle wheel rotation half cycle again and be in upper.
When needs vehicle stops, controlling three position four-way directional control valve line and be in meta, the now motion of hydraulic ram 4 stops, and accordingly, wheel is stop motion also.
Relative to existing driving driving system, the driving driving system that the present embodiment provides uses CD-ROM drive motor and transfer device to replace CD-ROM drive motor.Relative to CD-ROM drive motor, hydraulic ram has that structure is simple, power transmission efficiency and the high advantage of reliability.Therefore, the driving driving system cost that the present embodiment provides is lower, and kinetic energy rejection is little, and later period maintenance is simple, and reliability of service is higher.
Fig. 2 shows the structure of the driving driving system that the embodiment of the present invention 2 provides.The difference of the present embodiment and embodiment 1 is:
The number of hydraulic ram is two, is respectively left hydraulic ram 41 and right hydraulic ram 42, and by a hydraulic pump drive, accordingly, the number of drive wheel and transfer device is also two, is respectively left driving wheel 51 and left-hand rotation changing device 61, right drive wheel 52 and right-hand rotation changing device 62.Left hydraulic ram 41 is connected with left driving wheel 51 by left-hand rotation changing device 61, and right hydraulic ram 42 is connected with drive wheel 52 by right-hand rotation changing device 62.One end of left hydraulic ram 41 and right hydraulic ram 42 all communicates with the first oil circuit a, and the other end all communicates with the second oil circuit b.The advantage of the present embodiment is that structure is comparatively simple.
Fig. 3 shows the structure of the driving driving system that the embodiment of the present invention 3 provides.The present embodiment is with the difference implementing 2:
Drive driving system also to comprise tandem-driving bogie 7, tandem-driving bogie 7 is arranged between transfer device 6 and drive wheel 5.The effect of this tandem-driving bogie 7 is: adjustment, makes vehicle can not run-off the straight thus ensure that the stationarity of construction when the road traveling operation of complexity, increases work efficiency; In addition, tandem-driving bogie 7 can also make power transmission more steady, the load-carrying of support vehicle afterbody.
The driving driving system that the present embodiment provides is specially adapted to road grader.
It should be noted that, in above-described embodiment:
Above-mentioned change-over valve can be pilot operated directional control valve, electric control reversing valve or Mechanical course change-over valve.In the embodiment of the present invention, change-over valve is preferably solenoid directional control valve.
The number of Hydraulic Pump can be 1 (as Suo Shi this enforcement), and namely Hydraulic Pump drives the hydraulic ram of vehicle both sides simultaneously; Or 2, i.e. the hydraulic ram of each hydraulic pump drive vehicle side.
The hydraulic efficiency pressure system of Hydraulic Pump and hydraulic ram composition can be closed fhdraulic system (Fig. 2 and Fig. 3), also can be open type hydraulic system.
As shown in the above, the driving driving system that the embodiment of the present invention provides uses CD-ROM drive motor and transfer device to replace CD-ROM drive motor.Relative to CD-ROM drive motor, hydraulic ram has that structure is simple, power transmission efficiency and the high advantage of reliability.Therefore, the above-mentioned driving driving system cost that the embodiment of the present invention provides is lower, and kinetic energy rejection is little, and later period maintenance is simple, the advantage that reliability of service is higher.
The embodiment of the present invention additionally provides a kind of engineering truck, this project vehicle is provided with any one driving driving system above-mentioned, because any one driving driving system above-mentioned has above-mentioned technique effect, therefore, the construction machinery and equipment being provided with this driving driving system also should possess corresponding technique effect, its specific implementation process is similar to the above embodiments, does not hereby repeat.Because this drive system has the high advantage of power transmission efficiency, therefore this project machinery is preferably road grader.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. drive a driving system, it is characterized in that, comprising:
Driving engine (1);
The Hydraulic Pump (2) be connected with described driving engine (1);
The hydraulic ram (4) stretching out and regain is driven by described Hydraulic Pump (2);
Be arranged on the transfer device (6) between described hydraulic ram (4) and drive wheel (5), described transfer device (6) is for being converted to rotary motion by the linear reciprocating motion of described hydraulic ram (4);
Be arranged at the reversing arrangement between described Hydraulic Pump (2) and described hydraulic ram (4), described reversing arrangement is for controlling stretching out and regaining of described hydraulic ram (4);
Described reversing arrangement comprises:
The first oil circuit communicated with oil outlet and described hydraulic ram (4) one end hydraulic fluid port of described Hydraulic Pump (2);
The second oil circuit communicated with return opening and described hydraulic ram (4) other end hydraulic fluid port of described Hydraulic Pump (2);
Be arranged on the change-over valve (3) on described first oil circuit and described second oil circuit, described change-over valve (3) has three kinds of mode of operations, when described change-over valve (3) is in the first mode of operation, described first oil circuit is as oil feeding line, and described second oil circuit is as oil return circuit; When described change-over valve (3) is in the second mode of operation, described first oil circuit and the equal stop control lever of the second oil circuit and oil return; When described change-over valve (3) is in the 3rd mode of operation, described first oil circuit is as oil return circuit, and described second oil circuit is as oil feeding line.
2. driving driving system according to claim 1, it is characterized in that, described driving driving system also comprises tandem-driving bogie (7), and described tandem-driving bogie (7) is arranged between described transfer device (6) and described drive wheel (5).
3. driving driving system according to claim 1, is characterized in that, described change-over valve (3) is solenoid directional control valve (3).
4. driving driving system according to claim 1, is characterized in that, the number of described hydraulic ram (4) is multiple.
5. drive driving system according to claim 1, it is characterized in that, described drive wheel (5) is front wheel driving driving wheel or back-wheel drive wheel.
6. the driving driving system according to claim 1 to 5 any one, is characterized in that, described transfer device (6) is crank block device.
7. an engineering truck, is characterized in that, is provided with the driving driving system described in claim 1 to 6 any one.
8. engineering truck according to claim 7, is characterized in that, described engineering truck is road grader.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210493033.5A CN102991347B (en) | 2012-11-28 | 2012-11-28 | Engineering truck and driving driving system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210493033.5A CN102991347B (en) | 2012-11-28 | 2012-11-28 | Engineering truck and driving driving system thereof |
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| Publication Number | Publication Date |
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| CN102991347A CN102991347A (en) | 2013-03-27 |
| CN102991347B true CN102991347B (en) | 2015-09-02 |
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| CN201210493033.5A Active CN102991347B (en) | 2012-11-28 | 2012-11-28 | Engineering truck and driving driving system thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405412A (en) * | 2001-09-14 | 2003-03-26 | 三一重工股份有限公司 | Hydrostatic drive land leveller |
| CN2777231Y (en) * | 2003-12-24 | 2006-05-03 | 闫学富 | Combination type low-speed hydraulic motor |
| CN201124757Y (en) * | 2007-10-27 | 2008-10-01 | 福田雷沃国际重工股份有限公司 | Full hydraulic drive loading type tractor |
| CN201723359U (en) * | 2010-07-05 | 2011-01-26 | 王英平 | Hydraulic engine |
| CN202944205U (en) * | 2012-11-28 | 2013-05-22 | 三一重工股份有限公司 | Engineering vehicle and drive traveling system thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005282687A (en) * | 2004-03-29 | 2005-10-13 | Fuji Heavy Ind Ltd | Right and left drive force distributing device |
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2012
- 2012-11-28 CN CN201210493033.5A patent/CN102991347B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405412A (en) * | 2001-09-14 | 2003-03-26 | 三一重工股份有限公司 | Hydrostatic drive land leveller |
| CN2777231Y (en) * | 2003-12-24 | 2006-05-03 | 闫学富 | Combination type low-speed hydraulic motor |
| CN201124757Y (en) * | 2007-10-27 | 2008-10-01 | 福田雷沃国际重工股份有限公司 | Full hydraulic drive loading type tractor |
| CN201723359U (en) * | 2010-07-05 | 2011-01-26 | 王英平 | Hydraulic engine |
| CN202944205U (en) * | 2012-11-28 | 2013-05-22 | 三一重工股份有限公司 | Engineering vehicle and drive traveling system thereof |
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| CN102991347A (en) | 2013-03-27 |
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