CN102431446A - Engineering truck and driving system thereof - Google Patents
Engineering truck and driving system thereof Download PDFInfo
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- CN102431446A CN102431446A CN201110383563XA CN201110383563A CN102431446A CN 102431446 A CN102431446 A CN 102431446A CN 201110383563X A CN201110383563X A CN 201110383563XA CN 201110383563 A CN201110383563 A CN 201110383563A CN 102431446 A CN102431446 A CN 102431446A
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- vehicle bridge
- gear box
- drive system
- engineering truck
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Abstract
The invention relates to the technical field of engineering machinery, and discloses an engineering truck and a driving system thereof. The driving system comprises multiple levels of axles, a lower truck engine, a transmission gear, a first transmission shaft, a transfer case, a hydraulic motor and a hydraulic pump, the hydraulic motor is in drive connection with at least one level of axle, and the hydraulic pump supplies oil to the hydraulic motor and is powered from the lower truck engine, the transmission gear, the first transmission shaft or the transfer case. By the aid of the driving system of the engineering truck in an embodiment of the invention, power of the lower truck engine and corresponding hydraulic systems are sufficiently utilized to drive certain axles, so that auxiliary driving force is provided for the integral truck when driving capacity of the lower truck engine is insufficient or power transmission capacity of the lower truck engine is poorer, a driving performance of the integral truck is improved, and the requirement of power is met when the engineering truck drives in bad road conditions or climbs slopes.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly relate to a kind of engineering truck and drive system thereof.
Background technology
Engineering truck is widely used in fields such as heavy haul transport, building operation, open-air lifting and public service, and its construction environment is relatively more abominable usually, and track is uneven, and road conditions are relatively poor, and therefore, the driveability of engineering truck receives publicity day by day.For example, wheel crane often need shift between each camp site when construction operation back and forth; And in the process of moving; Often need pull out the mountain again and paddle, therefore, the client for the driveability of wheel crane especially large-tonnage wheel crane require increasingly high.
In the prior art, the following car engine on the engineering truck through change speed gear box, transmission shaft etc. for vehicle bridge provides power, still; The engineering truck more for vehicle bridge or tonnage is bigger; For example, for the large-tonnage wheel crane, because its first-to-last of axle dimension is too big; Common transmission shaft mode or some parts on the power transmission chain are difficult to satisfy with the needs of transmission of power to vehicle bridge far away, thereby influence the car load driveability.
Therefore, how improving the driveability of engineering truck, is the technical barrier that those skilled in the art need to be resolved hurrily.
Summary of the invention
In view of this, the present invention aims to provide a kind of engineering truck and drive system thereof, to solve existing engineering truck because of being difficult to that transmission of power to vehicle bridge far away is caused driving hypodynamic problem.
On the one hand; The invention provides a kind of drive system of engineering truck; This drive system comprise the multistage vehicle bridge be located on the said engineering truck and down car engine, with this engine drive bonded assembly change speed gear box of getting off, and at least one-level vehicle bridge driving bonded assembly auxiliary gear box and be connected in this change speed gear box and this auxiliary gear box between first transmission shaft, also comprise:
Drive the bonded assembly HM Hydraulic Motor with another grade vehicle bridge at least;
Be the Hydraulic Pump of said HM Hydraulic Motor fuel feeding, the power taking on said down car engine, said change speed gear box, said first transmission shaft or the said auxiliary gear box of said Hydraulic Pump.
Further, said car engine, said change speed gear box, said first transmission shaft or said auxiliary gear box down are provided with the power taking mouth, and said Hydraulic Pump passes through power takeoff from the power taking of said power taking mouth.
Further, the hydraulic efficiency pressure system of said Hydraulic Pump and said HM Hydraulic Motor formation is closed fhdraulic system or open type hydraulic system.
Further, said hydraulic efficiency pressure system is an open type hydraulic system;
Said open type hydraulic system also comprises hydraulic reservoir and directional control valve;
The oil inlet of said Hydraulic Pump communicates with said hydraulic reservoir;
The oil outlet of said Hydraulic Pump and said hydraulic reservoir link to each other with the oil inlet and outlet of said HM Hydraulic Motor through said directional control valve.
Further, said directional control valve is a two-position four-way solenoid valve.
Further, said drive system also comprises power-transfer clutch and/or the retarder of being located between said vehicle bridge of another grade at least and the said HM Hydraulic Motor.
Further,
Said drive system also comprises second transmission shaft;
Vehicle bridge by said fluid motor-driven is connected through said second transmission shaft driving with the vehicle bridge that is driven by said auxiliary gear box.
On the other hand, the present invention also provides a kind of engineering truck, and this project car is provided with above-mentioned each described drive system.
Further, said engineering truck is specially wheel crane.
The drive system of a kind of engineering truck provided by the invention and the engineering truck that is provided with this drive system; Power and corresponding hydraulic efficiency pressure system through making full use of down car engine drive some vehicle bridge (like car engine vehicle bridge far away under the distance); Make that be that car load provides auxiliary driving force in the power-handling capability deficiency of descending the conventional transmission of car engine when perhaps its transmission of power ability is relatively poor; With the driveability of raising car load, thereby satisfy the power needs of engineering truck when road conditions are badly perhaps climbed, compared with prior art; Both improve the power of time car engine, also improved the carrying capacity of engineering truck.
Description of drawings
Fig. 1 is a kind of structural representation with engineering truck of last car engine and following car engine;
A kind of composition scheme drawing that is applied to the drive system of engineering truck shown in Figure 1 that Fig. 2 provides for first embodiment of the invention;
A kind of composition scheme drawing that is applied to the drive system of engineering truck shown in Figure 1 that Fig. 3 provides for second embodiment of the invention;
A kind of composition scheme drawing that is applied to the drive system of engineering truck shown in Figure 1 that Fig. 4 provides for third embodiment of the invention.
The specific embodiment
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.Should be pointed out that description and the description order to concrete structure only is the explanation to specific embodiment in this part, should not be regarded as that protection scope of the present invention is had any restriction.
Please refer to Fig. 1 to Fig. 4; Wherein, Fig. 1 is a kind of structural representation with engineering truck of last car engine and following car engine; A kind of composition scheme drawing that is applied to the drive system of engineering truck shown in Figure 1 that Fig. 2 provides for first embodiment of the invention, a kind of composition scheme drawing that is applied to the drive system of engineering truck shown in Figure 1 that Fig. 3 provides for second embodiment of the invention, a kind of composition scheme drawing that is applied to the drive system of engineering truck shown in Figure 1 that Fig. 4 provides for third embodiment of the invention.Combine Fig. 1 to Fig. 4 that the embodiment of the invention is elaborated below simultaneously.
As shown in Figure 1; This project car 100 is provided with down car engine 1 and last car engine 6, and wherein, following car engine 1 is generally used for for going of engineering truck 100 power being provided; Last car engine 5 is generally used for for the mobile unit on the engineering truck 100 operation power being provided; For example, when engineering truck 100 was car hosit, following car engine 1 is used to car chassis provided driving dynamics; Satisfy the needs of car hosit transition, 6 hoisting processes that are used to car hosit of last car engine provide power.
As shown in Figure 2; The drive system of this first embodiment is except comprising the multistage vehicle bridge of being located on engineering truck 100 chassis; Promptly first vehicle bridge 11, second vehicle bridge 12, the 3rd vehicle bridge 13, N vehicle bridge 14 and M vehicle bridge 15 etc. also comprise car engine 1, change speed gear box 2, transmission shaft 3, auxiliary gear box 4, HM Hydraulic Motor 5, power takeoff 7, Hydraulic Pump 8, hydraulic reservoir 9 directional control valves 10 and transmission shaft 16 etc. down.
The mouth of following car engine 1 drives with the input end of change speed gear box 2 and is connected; The mouth of change speed gear box 2 drives with an end of transmission shaft 3 and is connected; The other end of transmission shaft 3 drives with the input end of auxiliary gear box 4 and is connected; The mouth of auxiliary gear box 4 drives through transmission shaft and a part of vehicle bridge (distance car engine 1 or auxiliary gear box 4 down is nearer) and is connected, for it provides power, has illustrated among Fig. 1 that auxiliary gear box 4 passes through transmission shaft and first vehicle bridge 11,13 drivings are connected second vehicle bridge 12 with the 3rd vehicle bridge.
Following car engine 1 is provided with the power taking mouth, and power takeoff 7 drives with this power taking mouth and is connected, and the mouth of power takeoff 7 drives and is connected in Hydraulic Pump 8, for it provides power; The oil inlet of Hydraulic Pump 8 is connected in hydraulic reservoir 9 through hydralic hose, and the oil outlet of Hydraulic Pump 8 and hydraulic reservoir 9 link to each other with the oil inlet and outlet of HM Hydraulic Motor 5 through hydralic hose and directional control valve 10 respectively; The mouth of HM Hydraulic Motor 5 drives with the vehicle bridge (car engine 1 or auxiliary gear box 4 are nearer under the distance) that a part does not drive through auxiliary gear box 4 and is connected, and the mouth that only shows HM Hydraulic Motor 5 among Fig. 1 drives with N vehicle bridge 14 and is connected; N vehicle bridge 14 can drive with M vehicle bridge 15 through transmission shaft 16 and be connected, so that further be that M vehicle bridge 15 provides power.
In the foregoing description; Can set up power-transfer clutch between HM Hydraulic Motor 5 and the N vehicle bridge 14 as required (schemes not shown; Be used for the joint of optionally modulated pressure motor 5 and N vehicle bridge 14 or separate) and/or retarder (scheme not shown; Be used to increase reduction ratio), the mounting means of power-transfer clutch and retarder can be referring to relevant prior art.
In the above-described embodiments; Directional control valve 10 is a two-position four-way solenoid valve; Be that directional control valve 10 has two kinds of mode of operations, under first kind of mode of operation, the oil outlet of Hydraulic Pump 8 communicate with the oil inlet of HM Hydraulic Motor 5 (realizing) through hydralic hose; The oil outlet of HM Hydraulic Motor 5 communicate with hydraulic reservoir 9 (realizing) through hydralic hose; Under second kind of mode of operation, the oil outlet of the oil outlet of Hydraulic Pump 8 and HM Hydraulic Motor 5 all communicates with hydraulic reservoir 9, and Hydraulic Pump 8 is not to HM Hydraulic Motor 5 fuel feeding; Should be pointed out that the foregoing description can also use other forms of directional control valve, as long as can realize above-mentioned function corresponding.
In the above-described embodiments; The hydraulic efficiency pressure system that is made up of Hydraulic Pump 8, HM Hydraulic Motor 5, directional control valve 10 and hydraulic reservoir 9 etc. is an open type hydraulic system; Under other situations, also can use closed fhdraulic system as required, the structure of relevant closed system can be referring to relevant prior art.
The principle of work of the drive system of the foregoing description is following:
When the speed of a motor vehicle of engineering truck 100 is higher than 10km/h (or other preset values); Be located at the power-transfer clutch between HM Hydraulic Motor 5 and the N vehicle bridge 14 through control directional control valve 10 or control; Make Hydraulic Pump 8 perhaps the mouth of HM Hydraulic Motor 5 separated with N vehicle bridge 14 to HM Hydraulic Motor 5 fuel feeding; At this moment, N vehicle bridge 14 and M vehicle bridge 15 do not possess power-handling capability, and the power that following car engine 1 provides through conventional type of drive through auxiliary gear box 4 is enough to satisfy the demand of engineering truck 100 cruisings;
When the speed of a motor vehicle of engineering truck 100 is lower than 10km/h (perhaps other preset values) or engineering truck 100 needs climbings; Be located at the power-transfer clutch between HM Hydraulic Motor 5 and the N vehicle bridge 14 through control directional control valve 10 or control; Make 8 pairs of HM Hydraulic Motor 5 fuel feeding of Hydraulic Pump and the mouth of HM Hydraulic Motor 5 is engaged with N vehicle bridge 14; At this moment; N vehicle bridge 14 and M vehicle bridge 15 possess power-handling capability; In order to reach the better driving performance, can also be as required, N vehicle bridge 14 and M vehicle bridge 15 implement the following step (for example can realize) before possessing propulsive effort: 1) read the gear of rotating speed, moment of torsion and the change speed gear box 2 of car engine 1 down, and calculate the average torque of current vehicle bridge through way of hardware and software combination; 2), parameter such as rotating speed, moment of torsion and other vehicle bridge of N vehicle bridge 14 and M vehicle bridge 15 after the hydraulic-driven are adapted according to the discharge capacity of this average torque modulated pressure pump 8, HM Hydraulic Motor 10 or the parameters such as output speed of power takeoff 7.
Need to prove; In the foregoing description; In order to keep between these two kinds of vehicle bridge, to increase corresponding transmission shaft, with sight casehistory shown in Figure 1 by the vehicle bridge of HM Hydraulic Motor 5 drivings and by the synchronism between the vehicle bridge of auxiliary gear box 4 drivings; For fear of moving interference; HM Hydraulic Motor 5 is driven be connected in M vehicle bridge 15, the M vehicle bridge 15 to drive through transmission shaft 16 is connected in the transmission shaft (scheme not shown) of N vehicle bridge 14, the four vehicle bridge 14 through additive incrementation and is connected with 13 drivings of the 3rd vehicle bridge.
Need to prove; In the foregoing description; Hydraulic Pump 8 gains impetus through the power taking mouth of power takeoff 7 from following car engine 1; But in other embodiments; Power takeoff 7 can also be from other position power takings such as power taking mouth on change speed gear box 2, transmission shaft 3 or the auxiliary gear box 4, for example: second embodiment of the invention as shown in Figure 3, and this second embodiment comprises component parts such as the described car engine 1 down of first embodiment, change speed gear box 2, transmission shaft 3, auxiliary gear box 4, HM Hydraulic Motor 5, power takeoff 7, Hydraulic Pump 8, hydraulic reservoir 9, directional control valve 10, first vehicle bridge 11, second vehicle bridge 12, the 3rd vehicle bridge 13, N vehicle bridge 14 and M vehicle bridge 15; Its difference is, the power taking mouth power taking of power takeoff 7 from the change speed gear box 2; And for example; Third embodiment of the invention as shown in Figure 4; The 3rd embodiment comprises component parts such as the described down car engine 1 of first embodiment, change speed gear box 2, transmission shaft 3, auxiliary gear box 4, HM Hydraulic Motor 5, power takeoff 7, Hydraulic Pump 8, hydraulic reservoir 9, directional control valve 10, first vehicle bridge 11, second vehicle bridge 12, the 3rd vehicle bridge 13, N vehicle bridge 14 and M vehicle bridge 15; Its difference is that power takeoff 7 is from the power taking mouth power taking of auxiliary gear box 4.
Need to prove; In the foregoing description, Hydraulic Pump 8 gains impetus through the power taking mouth of power takeoff 7 from following car engine 1, but under other situations; For example; In order to make full use of the power of car engine 6, Hydraulic Pump 8 is gained impetus through the power taking mouth of power takeoff 7 from last car engine 6, so also can realize hydraulic-driven to vehicle bridge 14 and 15.
Need to prove that in the foregoing description, HM Hydraulic Motor 5 direct drives are connected in N vehicle bridge 14; But under other situations, for example, for the wheel that makes N vehicle bridge 14 both sides has different moments of torsion; Also can adopt two HM Hydraulic Motors 5 to be connected with two wheel drive of N vehicle bridge 14 respectively, directly two wheels driven, further; In order to have certain reduction ratio, can also between HM Hydraulic Motor 5 and wheel, set up corresponding retarder as required.
Need to prove; Usually adopt auxiliary gear box 4 power to be provided near following several vehicle bridge of car engine 1 (being first vehicle bridge 11, second vehicle bridge 12 and the 3rd vehicle bridge 13 shown in Fig. 1) in the multistage vehicle bridge, and adopt HM Hydraulic Motor 5 power to be provided usually for it away from several vehicle bridge (being N vehicle bridge 14 and the M vehicle bridge 15 shown in Fig. 1) of descending car engine 1 for it.
The drive system of a kind of engineering truck that the embodiment of the invention provides; Power and corresponding hydraulic efficiency pressure system through making full use of down car engine drive some vehicle bridge (like car engine vehicle bridge far away under the distance); Make that be that car load provides auxiliary driving force in the power-handling capability deficiency of descending car engine when perhaps its transmission of power ability is relatively poor; With the driveability of raising car load, thereby satisfy the power needs of engineering truck when road conditions are badly perhaps climbed; Compared with prior art, both improve the power of time car engine, also improved the carrying capacity of engineering truck.
The embodiment of the invention also provides a kind of engineering truck; For example wheel crane or pump truck etc. have the construction machinery and equipment on Duo Qiao chassis, and this project car is provided with above-mentioned drive system, because above-mentioned drive system has above-mentioned technique effect; Therefore; The engineering truck that is provided with this drive system also should possess the corresponding techniques effect, and its practical implementation process is similar to the above embodiments, does not give unnecessary details now.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the drive system of an engineering truck (100); Comprise the multistage vehicle bridge be located on the said engineering truck (100) and down car engine (1), drive bonded assembly change speed gear box (2), and one-level vehicle bridge (11 at least with this time car engine (1); 12; 13) drive bonded assembly auxiliary gear box (4) and be connected in this change speed gear box (2) and this auxiliary gear box (4) between first transmission shaft (3), it is characterized in that said drive system also comprises:
Drive bonded assembly HM Hydraulic Motor (5) with another grade vehicle bridge (14) at least;
Be the Hydraulic Pump (8) of said HM Hydraulic Motor (5) fuel feeding, said Hydraulic Pump (8) is gone up power taking from said car engine (1), said change speed gear box (2), said first transmission shaft (3) or said auxiliary gear box (4) down.
2. drive system as claimed in claim 1; It is characterized in that: said car engine (1), said change speed gear box (2), said first transmission shaft (3) or said auxiliary gear box (4) down are provided with the power taking mouth, and said Hydraulic Pump (8) passes through power takeoff (7) from the power taking of said power taking mouth.
3. according to claim 1 or claim 2 drive system, it is characterized in that: said Hydraulic Pump (8) is closed fhdraulic system or open type hydraulic system with the hydraulic efficiency pressure system that said HM Hydraulic Motor (5) constitutes.
4. drive system as claimed in claim 3 is characterized in that:
Said hydraulic efficiency pressure system is an open type hydraulic system;
Said open type hydraulic system also comprises hydraulic reservoir (9) and directional control valve (10);
The oil inlet of said Hydraulic Pump (8) communicates with said hydraulic reservoir (9);
The oil outlet of said Hydraulic Pump (8) and said hydraulic reservoir (9) link to each other with the oil inlet and outlet of said HM Hydraulic Motor (5) through said directional control valve (10).
5. drive system as claimed in claim 4 is characterized in that: said directional control valve (10) is a two-position four-way solenoid valve.
6. according to claim 1 or claim 2 drive system, it is characterized in that: said drive system also comprises power-transfer clutch and/or the retarder of being located between said vehicle bridge of another grade at least (14) and the said HM Hydraulic Motor (5).
7. drive system as claimed in claim 2 is characterized in that:
Said drive system also comprises second transmission shaft;
Be connected through said second transmission shaft driving by the vehicle bridge of said HM Hydraulic Motor (5) driving and by the vehicle bridge that said auxiliary gear box (4) drives.
8. engineering truck, it is characterized in that: said engineering truck is provided with each described drive system of claim 1 to 7.
9. engineering truck as claimed in claim 8 is characterized in that: said engineering truck is specially wheel crane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110383563XA CN102431446A (en) | 2011-11-28 | 2011-11-28 | Engineering truck and driving system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110383563XA CN102431446A (en) | 2011-11-28 | 2011-11-28 | Engineering truck and driving system thereof |
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|---|---|
| CN102431446A true CN102431446A (en) | 2012-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110383563XA Pending CN102431446A (en) | 2011-11-28 | 2011-11-28 | Engineering truck and driving system thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103847517A (en) * | 2014-03-04 | 2014-06-11 | 中国重汽集团湖北华威专用汽车有限公司 | Special vehicle for transmission of mechanical-hydraulic composite transfer case |
| CN104191950A (en) * | 2014-07-17 | 2014-12-10 | 赵永胜 | Control system and method for oil, electricity and liquid combined type hybrid-power vehicle |
| CN105882397A (en) * | 2016-05-04 | 2016-08-24 | 秦海红 | Self-help travel driving device of truck semi-trailer |
| CN106741154A (en) * | 2016-11-15 | 2017-05-31 | 中联重科股份有限公司 | The steering control system and autocrane of crane |
| CN108327512A (en) * | 2018-02-09 | 2018-07-27 | 浙江吉利控股集团有限公司 | Hybrid electric drive system and vehicle |
| CN111810614A (en) * | 2019-04-12 | 2020-10-23 | 陕西保利特种车制造有限公司 | Forced cooling system of heavy-load axle |
| CN114475561A (en) * | 2021-12-23 | 2022-05-13 | 中联重科股份有限公司 | Drive control method, processor and device for engineering equipment and engineering equipment |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103847517A (en) * | 2014-03-04 | 2014-06-11 | 中国重汽集团湖北华威专用汽车有限公司 | Special vehicle for transmission of mechanical-hydraulic composite transfer case |
| CN104191950A (en) * | 2014-07-17 | 2014-12-10 | 赵永胜 | Control system and method for oil, electricity and liquid combined type hybrid-power vehicle |
| CN105882397A (en) * | 2016-05-04 | 2016-08-24 | 秦海红 | Self-help travel driving device of truck semi-trailer |
| CN106741154A (en) * | 2016-11-15 | 2017-05-31 | 中联重科股份有限公司 | The steering control system and autocrane of crane |
| CN108327512A (en) * | 2018-02-09 | 2018-07-27 | 浙江吉利控股集团有限公司 | Hybrid electric drive system and vehicle |
| CN111810614A (en) * | 2019-04-12 | 2020-10-23 | 陕西保利特种车制造有限公司 | Forced cooling system of heavy-load axle |
| CN111810614B (en) * | 2019-04-12 | 2023-06-16 | 陕西保利特种车制造有限公司 | Forced cooling system of heavy-duty axle |
| CN114475561A (en) * | 2021-12-23 | 2022-05-13 | 中联重科股份有限公司 | Drive control method, processor and device for engineering equipment and engineering equipment |
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Application publication date: 20120502 |