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Hydraulic auxiliary driving system of road roller, control method and road roller thereof
The invention discloses a hydraulic auxiliary driving system of a road roller, a control method and the road roller, and relates to the technical field of hydraulic transmission and control. The hydraulic pump is sequentially connected with the first electromagnetic directional valve, the rear wheel motor, the second electromagnetic directional valve and the first electromagnetic directional valve through an oil way to form a rear drive loop. The second electromagnetic directional valve and the front wheel motor form a circulation loop through an oil way so that the second electromagnetic directional valve can be combined with the rear drive loop to form a double-drive loop after the working position of the second electromagnetic directional valve is changed, and the hydraulic pump, the first electromagnetic directional valve and the second electromagnetic directional valve are all controlled by the controller. The switching among a rear-drive mode, a double-drive mode, a forward mode and a backward mode can be realized; and in the double-drive mode, the rotating speed difference between the front wheel and the rear wheel does not need to be judged, an overflow valve does not need to be used for pressure stabilization, back-and-forth switching in the existing mode is avoided, and good system stability and driving comfort are achieved.
本发明公开了压路机液压辅助驱动系统、控制方法及其压路机，涉及液压传动及控制技术领域，包括液压泵、第一电磁换向阀、第二电磁换向阀，液压泵通过油路依次连接第一电磁换向阀、后轮马达、第二电磁换向阀、第一电磁换向阀形成后驱回路；第二电磁换向阀还通过油路与前轮马达形成循环回路，以在第二电磁换向阀变换工作位置后结合后驱回路形成双驱回路，液压泵、第一电磁换向阀、第二电磁换向阀均受控于控制器；可以实现后驱模式、双驱模式、前进模式和后退模式的切换；并且解决了前后轮打滑问题，在双驱模式下，无需判断前轮和后轮的转速差，辅以溢流阀稳压，避免了现有模式下的来回切换，具有良好的系统稳定性和驾驶舒适性。
Hydraulic auxiliary driving system of road roller, control method and road roller thereof
The invention discloses a hydraulic auxiliary driving system of a road roller, a control method and the road roller, and relates to the technical field of hydraulic transmission and control. The hydraulic pump is sequentially connected with the first electromagnetic directional valve, the rear wheel motor, the second electromagnetic directional valve and the first electromagnetic directional valve through an oil way to form a rear drive loop. The second electromagnetic directional valve and the front wheel motor form a circulation loop through an oil way so that the second electromagnetic directional valve can be combined with the rear drive loop to form a double-drive loop after the working position of the second electromagnetic directional valve is changed, and the hydraulic pump, the first electromagnetic directional valve and the second electromagnetic directional valve are all controlled by the controller. The switching among a rear-drive mode, a double-drive mode, a forward mode and a backward mode can be realized; and in the double-drive mode, the rotating speed difference between the front wheel and the rear wheel does not need to be judged, an overflow valve does not need to be used for pressure stabilization, back-and-forth switching in the existing mode is avoided, and good system stability and driving comfort are achieved.
本发明公开了压路机液压辅助驱动系统、控制方法及其压路机，涉及液压传动及控制技术领域，包括液压泵、第一电磁换向阀、第二电磁换向阀，液压泵通过油路依次连接第一电磁换向阀、后轮马达、第二电磁换向阀、第一电磁换向阀形成后驱回路；第二电磁换向阀还通过油路与前轮马达形成循环回路，以在第二电磁换向阀变换工作位置后结合后驱回路形成双驱回路，液压泵、第一电磁换向阀、第二电磁换向阀均受控于控制器；可以实现后驱模式、双驱模式、前进模式和后退模式的切换；并且解决了前后轮打滑问题，在双驱模式下，无需判断前轮和后轮的转速差，辅以溢流阀稳压，避免了现有模式下的来回切换，具有良好的系统稳定性和驾驶舒适性。
Hydraulic auxiliary driving system of road roller, control method and road roller thereof
压路机液压辅助驱动系统、控制方法及其压路机
WANG HONGWEI (author) / LIANG QUAN (author) / ZHAO LUN (author) / YANG GUANGZHAO (author) / GUO XINHENG (author)
2023-11-24
Patent
Electronic Resource
Chinese
IPC:
F15B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
,
Druckmittelbetriebene Systeme allgemein
/
B60K
Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen
,
ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES
/
E01C
Bau von Straßen, Sportplätzen oder dgl., Decken dafür
,
CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE
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