Abstract:To reduce the abrasion of gear pump’s wear plate under multiple working conditions, a new mechanism connected balance mechanism, for wear plate’ balance was proposed. Compared with the separated balance mechanism, this method connects the back surface with the abrasion surface in the floating plate by a small hole on the high pressure side, therefore, pressure gradients on the back surface could change in accordance with the pressure gradients on the abrasion surface side. Based on the assumption that the local pressure distribution on wear plate was linear, the parameterization moment model based on discrete feature points was established. When floating plate’s total moment being taken as the criteria, both the theoretical analysis and experimental results show that, compared with the separated balance mechanism, the self balance and self adaptation capability of the connected balance mechanism plate increases by 61.09% under multiple working conditions.
