CN2880896Y - Hydraulic system of hydraulic road roller - Google Patents
Hydraulic system of hydraulic road roller Download PDFInfo
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- CN2880896Y CN2880896Y CN 200620072279 CN200620072279U CN2880896Y CN 2880896 Y CN2880896 Y CN 2880896Y CN 200620072279 CN200620072279 CN 200620072279 CN 200620072279 U CN200620072279 U CN 200620072279U CN 2880896 Y CN2880896 Y CN 2880896Y
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- hydraulic
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Abstract
The utility model discloses a hydraulic system of hydraulic road roller. The system is composed by hydraulic travel system, hydraulic vibration system and hydraulic steering system and is characterized in that the hydraulic travel system connects to oil tank through pipe line and pump, the pump connects with a shuttle valve, the shuttle valve connects with a proportional valve, and the proportional valve connect with a hydraulic motor, the hydraulic motor connects with the travel mechanism of the road roller. The hydraulic vibration system connects with the pump through the oil tank. And the pump connects with a vibration valve. The vibration valve then connects with a vibration motor. The hydraulic steering system connects with the steering pump through the oil tank. And the steering pump connects with a hydraulic steering gear. Using this system the road roller not only shows compact structure, flexible motion, smooth operation, machinery noise free, but also produces vibration function to exert vibration on the road bed and improve compactness degree of road bed thus to satisfy requirements of high grade road surface, and increase working efficiency of road roller greatly meanwhile.
Description
Technical field: the utility model relates to a kind of road roller, relates in particular to a kind of hydraulic system of hydraulic roller.
Technical background: along with country strengthens the infrastructure input, various high-grade highways and speedway are rapidly developed, and the demand of road administration building machineries such as road roller also strengthens thereupon.At present, the various vibratory rollers that occur on the market all are medium-sized, promptly adopt machine driving to realize vibration, reach the function of compacted subgrade.Adopt the road roller of this structure to have following defective: 1. road roller can produce impact when starting, commutation, parking, can the road surface of compacting be damaged, thereby influences the pavement compaction quality; 2. during the work of road roller, mechanically operated noise is very big, has a strong impact on surrounding environment, can constructor's body and mind be damaged, and serious meeting influences operating efficiency; 3. because mechanical oscillation oscillatory roller complex structure, exist to turn to lightly inadequately, flexible, shortcoming such as turning radius is very big can not be constructed road roller in narrow place.
Summary of the invention: the utility model purpose is to provide a kind of hydraulic roller of novel hydraulic system, make not only compact conformation of road roller, maneuverability, operate steadily, do not have mechanical noise, and can produce vibrating function, roadbed is vibrated, improve the degree of compaction of roadbed, make it to satisfy the requirement of high grade pavement, can improve the operating efficiency of road roller simultaneously again greatly.
The utility model is achieved in that a kind of novel hydraulic system of hydraulic roller, by hydraulic moving, hydraulic vibration and hydraulic steering system are formed, it is characterized in that: hydraulic travel system is by hydraulic oil container, oil line pipe, pump, proportioning valve and hydraulic motor are formed, hydraulic oil container links to each other with pump by oil line pipe, described pump discharge links to each other with reversal valve by pipeline, described reversal valve outlet links to each other with the import of proportioning valve by pipeline, the outlet of described proportioning valve links to each other with hydraulic motor by pipeline, and described hydraulic motor links to each other with the walking mechanism of road roller; Hydraulic vibrating system is linked to each other with pump by oil line pipe by hydraulic oil container, and described pump discharge links to each other with the valve that shakes by pipeline, and the described valve outlet port that shakes links to each other with vibrating motor by pipeline; Hydraulic steering system is linked to each other with steering pump by oil line pipe by hydraulic oil container, and described steering pump links to each other with hydraulic steering gear by pipeline.
The utility model compared with prior art has following advantage:
1. be used for travelling of this machine and be hydraulic-driven, so it is in starting, commutation can not produce impact during parking, can the road surface of compacting not damaged, thereby can improve the pavement compaction quality.The hydraulic system of this machine has a whole set of perfect protective device, even road roller needs snub when running at high speed, the high pressure of generation can not damage running motor yet.
2. because the hydraulic motor that adopts is the pendulum cylinder-type radial plunger piston motor, and hydraulic oil flows into piston by flow distributor, promote crankshaft rotating.The bent axle of rotation drives reducer moment of torsion is amplified.The rated pressure of motor is 20Mpa, and maximum pressure can reach 25Mpa, and the way of output is the motor shell rotation.Max. output torque can reach 4152Nm.
3. form by commutation, speed governing, off-load, several parts of safety valve owing to proportioning valve.The angle of conversion manual joystick can make the upper and lower stepless displacement of main valve plug, makes motor change rotation direction, makes the rotating speed stepless speed regulation of motor simultaneously.
4. because the two-way overload protective valve is housed on hydraulic motor, set pressure is 18Mpa.When road roller runs into emergency and needs snub; can produce very high surge in the plunger cylinder of motor, at this moment the overload protection valve can start immediately, pressure is limited in the pressure limit of setting; thereby motor is protected, reduces or avoid breaking down.
5. be integrated on the hydraulic motor owing to bidirectional balanced valve.Its effect is to make the oil return line of motor produce back pressure, in case the oil-in decompression, motor is just locked by the loop, and road roller is just out of service.Therefore, " slipping sloping " phenomenon can not take place yet, thereby ensure security of operation under the situation of travelling downwards on the ramp in road roller.
6. because accumulator is housed on hydraulic travel system, capacity is 1L, and the nitrogen pressurising is 5~7Mpa.It is under the situation about breaking down for the motor of road roller or hydraulic system, provides the device of the energy for opening brake.
Description of drawings: Fig. 1 is the principle schematic of the novel hydraulic system of a kind of hydraulic roller described in the utility model
1. valve 2. pumps 3. proportioning valves 4. steering pumps 5. fuel tanks shake
6. accumulator 7. walking mechanisms 8. hydraulic motors 9. equalizing valves
10. vibrating motor 11. steering gears 12. pipelines 13. reversal valves 14. protective valves
The specific embodiment: a kind of novel hydraulic system of hydraulic roller, by hydraulic moving, hydraulic vibration and hydraulic steering system are formed, it is characterized in that: hydraulic travel system is by hydraulic oil container 5, oil line pipe 12, pump 2, proportioning valve 3 and hydraulic motor 8 are formed, hydraulic oil container 5 links to each other with pump 2 by oil line pipe 12, described pump 2 outlets link to each other with reversal valve 13 by pipeline 12, described reversal valve 13 outlets link to each other with the import of proportioning valve 3 by pipeline 12, the outlet of described proportioning valve 3 links to each other with hydraulic motor 8 by pipeline 12, and described hydraulic motor 8 links to each other with the walking mechanism 7 of road roller; Hydraulic vibrating system is linked to each other with pump 2 by oil line pipe 12 by hydraulic oil container 5, and described pump 2 outlets link to each other with the valve 1 that shakes by pipeline 12, and described valve 1 outlet of shaking links to each other with vibrating motor 10 by pipeline 12; Hydraulic steering system is linked to each other with steering pump 4 by oil line pipe 12 by hydraulic oil container 5, and described steering pump 4 links to each other with hydraulic steering gear 11 by pipeline 12.
Two-way overload protective valve 14 is housed on hydraulic motor 8, and set pressure is 18Mpa.When road roller runs into emergency and needs snub; can produce very high surge in the plunger cylinder of motor, at this moment the overload protection valve can start immediately, pressure is limited in the pressure limit of setting; thereby motor is protected, reduces or avoid breaking down.
Bidirectional balanced valve is housed on described hydraulic motor, and its effect is to make the oil return line of motor produce back pressure, in case the oil-in decompression, motor is just locked by the loop, and road roller is just out of service.Therefore, " slipping sloping " phenomenon can not take place yet, thereby ensure security of operation under the situation of travelling downwards on the ramp in road roller.
Accumulator 6 is housed on hydraulic travel system, and capacity is 1L, and the nitrogen pressurising is 5~7Mpa.It is under the situation about breaking down for the motor of road roller or hydraulic system, provides the device of the energy for opening brake.
The hydraulic motor that adopts is the pendulum cylinder-type radial plunger piston motor, and hydraulic oil flows into piston by flow distributor, promotes crankshaft rotating.The bent axle of rotation drives reducer moment of torsion is amplified.The rated pressure of motor is 20Mpa, and maximum pressure can reach 25Mpa, and the way of output is the motor shell rotation.Max. output torque can reach 4152Nm.
For the output pressure and the shortening time of improving pump, described pump 2 is a duplex gear pump.
Claims (6)
1. the novel hydraulic system of a hydraulic roller, by hydraulic moving, hydraulic vibration and hydraulic steering system are formed, it is characterized in that: hydraulic travel system is by hydraulic oil container (5), oil line pipe (12), pump (2), proportioning valve (3) and hydraulic motor (8) are formed, hydraulic oil container (5) links to each other with pump (2) by oil line pipe (12), described pump (2) outlet links to each other with reversal valve (13) by pipeline (12), described reversal valve (13) outlet links to each other with the import of proportioning valve (3) by pipeline (12), the outlet of described proportioning valve (3) links to each other with hydraulic motor (8) by pipeline (12), and described hydraulic motor (8) links to each other with the walking mechanism (7) of road roller; Hydraulic vibrating system is linked to each other with pump (2) by oil line pipe (12) by hydraulic oil container (5), and described pump (2) outlet links to each other with the valve that shakes (1) by pipeline (12), and the described valve that shakes (1) outlet links to each other with vibrating motor (10) by pipeline (12); Hydraulic steering system is linked to each other with steering pump (4) by oil line pipe (12) by hydraulic oil container (5), and described steering pump (4) links to each other with hydraulic steering gear (11) by pipeline (12).
2. the novel hydraulic system of a kind of hydraulic roller according to claim 1 is characterized in that: bidirectional balanced valve (9) is housed on described hydraulic motor (8).
3. the novel hydraulic system of a kind of hydraulic roller according to claim 1 is characterized in that: two-way overload protective valve (14) is housed on hydraulic motor (8).
4. the novel hydraulic system of a kind of hydraulic roller according to claim 1 is characterized in that: accumulator (6) is housed on hydraulic travel system.
5. the novel hydraulic system of a kind of hydraulic roller according to claim 1, it is characterized in that: the hydraulic motor of employing is the pendulum cylinder-type radial plunger piston motor.
6. the novel hydraulic system of a kind of hydraulic roller according to claim 1 is characterized in that: described pump (2) is duplex gear pump.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200620072279 CN2880896Y (en) | 2006-04-18 | 2006-04-18 | Hydraulic system of hydraulic road roller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200620072279 CN2880896Y (en) | 2006-04-18 | 2006-04-18 | Hydraulic system of hydraulic road roller |
Publications (1)
Publication Number | Publication Date |
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CN2880896Y true CN2880896Y (en) | 2007-03-21 |
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Family Applications (1)
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CN 200620072279 Expired - Fee Related CN2880896Y (en) | 2006-04-18 | 2006-04-18 | Hydraulic system of hydraulic road roller |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102207108A (en) * | 2010-03-31 | 2011-10-05 | 上海劳雷仪器系统有限公司 | Hydraulic system as well as brake method and boosting method thereof |
CN102328647A (en) * | 2011-07-27 | 2012-01-25 | 三一重工股份有限公司 | Automatic loosening and braking device and road roller with same |
CN102839589A (en) * | 2012-09-12 | 2012-12-26 | 王全章 | Directional vibration road roller |
CN104195926A (en) * | 2014-08-13 | 2014-12-10 | 潍柴动力股份有限公司 | Road roller, hydraulic system of road roller, and control method for hydraulic system |
CN105544358A (en) * | 2015-12-07 | 2016-05-04 | 苏州广硕精密电子有限公司 | Vibratory roller hydraulic system |
CN105714655A (en) * | 2010-12-16 | 2016-06-29 | 哈姆股份公司 | Method for operating a self-propelled compaction roller |
CN105829609A (en) * | 2013-12-16 | 2016-08-03 | 沃尔沃建筑设备公司 | Hydraulic system for driving a vibratory mechanism |
CN106481605A (en) * | 2016-12-13 | 2017-03-08 | 三汽车制造有限公司 | A kind of road roller hydraulic system and road roller |
CN114508514A (en) * | 2022-01-29 | 2022-05-17 | 徐州徐工筑路机械有限公司 | Land leveler multi-rotary-motor control hydraulic system and control method thereof |
-
2006
- 2006-04-18 CN CN 200620072279 patent/CN2880896Y/en not_active Expired - Fee Related
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102207108B (en) * | 2010-03-31 | 2014-02-12 | 上海劳雷仪器系统有限公司 | Hydraulic system as well as brake method and boosting method thereof |
CN102207108A (en) * | 2010-03-31 | 2011-10-05 | 上海劳雷仪器系统有限公司 | Hydraulic system as well as brake method and boosting method thereof |
CN105714655A (en) * | 2010-12-16 | 2016-06-29 | 哈姆股份公司 | Method for operating a self-propelled compaction roller |
CN102328647A (en) * | 2011-07-27 | 2012-01-25 | 三一重工股份有限公司 | Automatic loosening and braking device and road roller with same |
CN102328647B (en) * | 2011-07-27 | 2013-09-25 | 三一重工股份有限公司 | Automatic loosening and braking device and road roller with same |
CN102839589A (en) * | 2012-09-12 | 2012-12-26 | 王全章 | Directional vibration road roller |
CN102839589B (en) * | 2012-09-12 | 2014-12-03 | 王全章 | Directional vibration road roller |
CN105829609A (en) * | 2013-12-16 | 2016-08-03 | 沃尔沃建筑设备公司 | Hydraulic system for driving a vibratory mechanism |
CN105829609B (en) * | 2013-12-16 | 2018-02-27 | 沃尔沃建筑设备公司 | For driving the hydraulic system of vibrating mechanism |
US10669677B2 (en) | 2013-12-16 | 2020-06-02 | Volvo Construction Equipment Ab | Hydraulic system for driving a vibratory mechanism |
CN104195926A (en) * | 2014-08-13 | 2014-12-10 | 潍柴动力股份有限公司 | Road roller, hydraulic system of road roller, and control method for hydraulic system |
CN105544358A (en) * | 2015-12-07 | 2016-05-04 | 苏州广硕精密电子有限公司 | Vibratory roller hydraulic system |
CN106481605A (en) * | 2016-12-13 | 2017-03-08 | 三汽车制造有限公司 | A kind of road roller hydraulic system and road roller |
CN114508514A (en) * | 2022-01-29 | 2022-05-17 | 徐州徐工筑路机械有限公司 | Land leveler multi-rotary-motor control hydraulic system and control method thereof |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070321 Termination date: 20110418 |