A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention provides a piston rod for a piston hammer and the piston hammer, the piston rod of the piston hammer comprises a piston main body section and a piston guide section which are fixedly connected, and a striking hammer head arranged at the lower end of the piston rod, and the piston main body section and/or the piston guide section are/is a polyhedral rod. An outer contact plane or an outer contact approximate plane is arranged on at least one side, deviated when the piston rod is knocked, of the outer wall of the polyhedral rod, so that the piston rod is in surface contact with a piston cylinder body of the piston hammer and/or the inner wall of the guide sleeve at least at the outer contact plane or the outer contact approximate plane; the contact area between the deviated side of the piston rod during knocking and the piston cylinder body and/or the guide sleeve is increased, the unit area pressure of the deviated side is reduced, a hydraulic oil film at the deviated side is not prone to being squeezed away by deviated knocking force, the lubrication degree of the deviated side is guaranteed, metal friction at the deviated side is greatly reduced, and the service life of the piston rod is prolonged. Abrasion of the outer wall of the piston rod and the inner wall of the piston cylinder body and/or the guide sleeve is avoided, the cylinder score phenomenon is avoided, and the hydraulic piston hammer is durable.
本发明提供一种用于活塞锤的活塞杆及活塞锤，活塞锤的活塞杆包括固定相连的活塞主体段和活塞导向段、以及设在活塞杆下端的打击锤头，活塞主体段和/或活塞导向段为多面体杆，多面体杆的外壁上至少在活塞杆敲击时偏向的一侧设有外接触平面或外接触近似平面，使活塞杆至少在外接触平面或外接触近似平面处与活塞锤的活塞缸体和/或导向套的内壁为面接触，增加活塞杆在敲击时偏向的一侧处与活塞缸体和/或导向套之间的接触面积，也就减少该处单位面积压力，使该处液压油膜不容易被偏向敲击力挤走，确保该处的润滑度，大幅减少了该处的金属摩擦，避免活塞杆的外壁、以及活塞缸体和/或导向套的内壁的磨损，避免出现拉缸现象，使液压活塞锤经久耐用。
The invention provides a piston rod for a piston hammer and the piston hammer, the piston rod of the piston hammer comprises a piston main body section and a piston guide section which are fixedly connected, and a striking hammer head arranged at the lower end of the piston rod, and the piston main body section and/or the piston guide section are/is a polyhedral rod. An outer contact plane or an outer contact approximate plane is arranged on at least one side, deviated when the piston rod is knocked, of the outer wall of the polyhedral rod, so that the piston rod is in surface contact with a piston cylinder body of the piston hammer and/or the inner wall of the guide sleeve at least at the outer contact plane or the outer contact approximate plane; the contact area between the deviated side of the piston rod during knocking and the piston cylinder body and/or the guide sleeve is increased, the unit area pressure of the deviated side is reduced, a hydraulic oil film at the deviated side is not prone to being squeezed away by deviated knocking force, the lubrication degree of the deviated side is guaranteed, metal friction at the deviated side is greatly reduced, and the service life of the piston rod is prolonged. Abrasion of the outer wall of the piston rod and the inner wall of the piston cylinder body and/or the guide sleeve is avoided, the cylinder score phenomenon is avoided, and the hydraulic piston hammer is durable.
本发明提供一种用于活塞锤的活塞杆及活塞锤，活塞锤的活塞杆包括固定相连的活塞主体段和活塞导向段、以及设在活塞杆下端的打击锤头，活塞主体段和/或活塞导向段为多面体杆，多面体杆的外壁上至少在活塞杆敲击时偏向的一侧设有外接触平面或外接触近似平面，使活塞杆至少在外接触平面或外接触近似平面处与活塞锤的活塞缸体和/或导向套的内壁为面接触，增加活塞杆在敲击时偏向的一侧处与活塞缸体和/或导向套之间的接触面积，也就减少该处单位面积压力，使该处液压油膜不容易被偏向敲击力挤走，确保该处的润滑度，大幅减少了该处的金属摩擦，避免活塞杆的外壁、以及活塞缸体和/或导向套的内壁的磨损，避免出现拉缸现象，使液压活塞锤经久耐用。
Split type piston for breaking hammer and equipment for installing split type piston
| European Patent Office | 2021