Improved hydraulic motor and assembly test method thereof

Abstract

The invention discloses an improved hydraulic motor, a front end tapered roller bearing, a rear end tapered roller bearing and a driving shaft are installed by interference fit, an intermediate pressure ring is installed on the front end tapered roller bearing by interference fit, an oil groove radial channel arranged on the driving shaft is extended to the driving shaft front end to prompt the driving shaft to generate centrifugal force to improve the hydraulic energy to transform into mechanical energy efficiency; the intermediate pressure ring and an outer ring of the rear end tapered roller bearing are in interference fit with an inner hole of a motor casing; a bearing pressure cover is mounted in the motor casing, a plunger ring shrinks and sheathes a plunger, the plunger and a ball head end of a center connecting rod are respectively installed in the driving shaft, a cylindrical spring is installed in the center connecting rod for prevention of locking of the center connecting rod, the cylindrical spring and the axially uniformly distributed plunger are filled into a cylinder body, an oil distributing plate and the cylinder body spherical surface are fit, a spring seat is arranged in the end part of the center connecting rod; a rear end cover is installed in the motor casing end part, a positioning pin is inserted into the oil distributing plate, and a flush valve is tightly installed on the rear end cover end part in order to realize the automatic control of cooling.

Description

technical field [0001] The invention relates to the technical field of hydraulic system implementation, in particular to an improved hydraulic motor and an assembly testing method thereof. Background technique [0002] The hydraulic motor is the executive component in the hydraulic system, which is used for power transmission drive. It converts the hydraulic energy of the hydraulic system into mechanical energy and then drives the power output to drive external related devices in a rotating manner; and the inclined axis hydraulic motor, due to its small size , light weight, high power density, is widely used in various hydraulic systems. In recent years, with the continuous development of hydraulic technology in the direction of high pressure and high power and people's increasing emphasis on the environment, hydraulic actuators are required to have the characteristics of low noise, little pollution, and stable operation. However, in the hydraulic motor currently used, the ...

AI Technical Summary

Problems solved by technology

However, in the hydraulic motor currently used, the radial channel of the oil groove in the drive shaft only opens to the middle part of the drive shaft, resulting in the flushing hydraulic oil in the hydraulic motor being pumped to the middle part of the drive shaft and returning immediately, while the front end of the drive shaft is not Hydraulic oil delivery is not conducive to the heat dissipation of hydraulic motors

During the assembly process of hydraulic motor components, the assembly gap and size between each component are equally important. If the assembly gap is too large, the noise generated when the hydraulic motor is running is abnormally large, which not only causes environmental pollution, but also affects the relationship between each component. The transmission performance between the equipment; if the equipment gap is too small, it will directly cause damage to the internal components of the hydraulic motor, which is prone to failure

[0003] In addition, in order to prevent the central connecting rod from loosening during the movement of the traditional inclined-axis hydraulic motor, a gasket is provided at the bottom of the central connecting rod, and the gap between the gaskets is extremely difficult to adjust, especially due to the influence of the screw pre-tightening force. Large, it is easy to cause the center connecting rod to lock, and then cause the motor to be damaged; the hydraulic oil circulates during the process of converting the hydraulic energy into mechanical energy, which generates huge heat. If the heat is not dissipated in time, the temperature of the hydraulic motor will rise If it is too high, it will affect its service life and working condition characteristics, and even directly cause damage to components. The current cooling and flushing method is that the operator controls the external flushing pipe to cool and flush the hydraulic motor. The dynamic needs of the condition cannot be dynamically matched with the operating conditions of the motor in real time

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