The tooth adjustment of the double-arc gear should be carried out after roughing to improve its mechanical properties and extend the life of the gear. It is required that the hardness of the pinion is higher than that of the large gear, and the hardness difference is above 50HB, which improves the small The life of the gear.
Slots and blisters should be strictly controlled for casting tooth blanks. After the quenched and tempered shaft gears, the center hole should be re-trimmed to ensure the positioning accuracy of the finishing, grinding and hobbing.
When installing the tooth blank, it is necessary to strictly check the accuracy of the tire, so that the end face of the tire is controlled to be 0.01-0.05 mm. It is also important to correct the installation of the tooth blank. The outer circle of the shaft gear should be ground. The outer diameter of the shaft gear should not exceed 0.02mm. For the disk gear, the reference end face should face downward (that is, close to the upper end of the tire). ), Caesar air compressor has a diameter jump of no more than 0.05mm and a jump of no more than 0.02mm.
Hobbing processing:
(1) Firstly, strictly check the installation accuracy of the hob bar, and check the runout of the shank and the bounce of the reference end face with a dial indicator. The error is not more than 0.02 mm.
(2) After the hob is installed, its diameter jump does not exceed 0.O3mm.
(3) Whether the hob is neutral or not is related to whether the correct tooth shape can be cut out. This is one of the main differences between it and the involute gear, which is carried out by means of the tooth cutter method.
(4) The double arc gear is sensitive to the error of the helix angle. It directly affects the change of the instantaneous angular velocity ratio and also affects the pitch error. Therefore, the spiral angle error is required to be as small as possible.
Loader hydraulic system fluid generally has the following components:
1. Power component part: its function is to convert the mechanical energy of the motor or engine into hydraulic energy, such as various oil pumps.
2. Actuator part: its function is to convert hydraulic energy into machinery, thereby driving the working parts to make linear or rotary motion, such as hydraulic cylinders or hydraulic motors.
3. Control element part: its function is to adjust and control the pressure, flow and flow direction of the liquid flow in the hydraulic system to meet the requirements of the force (torque), speed (speed) and movement direction (circular movement) required by the working parts. Such as various pressure valves, flow valves and reversing valves.
4. Auxiliary components: oil tank, oil pipe, pipe joint, oil filter, accumulator, pressure gauge, radiator, transmission medium, etc. They play an important role in ensuring the reliability and stability of the hydraulic system.
5. Transmission medium: hydraulic oil.
The hydraulic system of the loader generally includes a working hydraulic system, a steering hydraulic system, and some also use a pilot hydraulic system.
The working hydraulic system is generally composed of a Working Pump, a multi-way valve, a boom Cylinder, a Bucket cylinder, and pipelines.
The steering hydraulic system is generally composed of a steering pump, a monostable valve, a priority valve, a steering gear, a flow amplification valve, a steering cylinder, and pipelines.
The pilot hydraulic system generally consists of a pilot pump, a pressure selection valve, a pilot valve, a steering gear (pilot), a steering limit valve, and a pilot line.
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