PF455S transplanter its side clutch lever to explore and improve

Zhang Li

 

    (Electrical Engineering School of Liaoning Province, Liaoning, Liaoning F Day 111 () () 4)

 

Abstract: PF455S walking transplanter transplanter drive chassis compared with the domestic unicycle, water Ⅱ] mobility and passing ability is good, but there are also handle issues such as improper installation clamp. Introduction PF455S power transplanter system components, design principles and main parameters of the discovery of the side away from the control handle problems to improve, to achieve the design goal.

 

Keywords: PF455S transplanter: side clutch: Handle: Design

 

CLC: S2 Document code: A Article ID :1674-1161 (2011) 04-0056-02

 

    PF455S transplanter is suitable for use in rice-producing areas around my walk-rice transplanter, its design is simple, lightweight, flexible operation, safe and reliable, and its good performance and can promote through paddy rice yield stability.

 

An overall demonstration program

 

    PF455S transplanter mainly by the engine, transmission, chassis and running systems, hydraulic lines and imitation insertion depth control system, etc., the structure shown in Figure 1.

 

    It is the walk-wheel drive transplanter, you can walk after machine operation. Its main operations are in the rear of the machine system with a wire connected to each control part, easy to operate and control the machine: box and transplanting seedlings arm rear of the machine is also easy to view and add seedling machine hand. In order to improve the machine's motor performance, reduce quality, PF455S transplanter uses a plastic (floating plate, seeding boxes, covers, etc.) and Qian aluminum castings (main gearbox, cuttings gear box, rails, etc.). Transplanter front of the engine, so that the machine around balance.

 

1.1 transplanter power transmission

 

    Transplanter power transmission can be divided into three routes: one wheel drive and steering routes: two are transplanting driver and adjust the transmission line spacing: three are mobile and send seedlings seedling box volume control transmission route. This three power transmission line, collaborate, work together to complete the planting.

 

Structure of main components 1.2 transplanter

 

1.2.1 Engine power output is generated and the parts, can be said that the heart of the transplanter. Its working principle is: When the crankshaft rotation when the timing gear ratio of 2:1 speed driven rotary cam, cam timed push mast, the plunger valve to overcome the spring force, the valve open. 1.2.2 The main gearbox mainly by the main gearbox input shaft and gear assembly, transplanting the drive shaft and gear assembly, side clutch shaft and the gear assembly, drive axle assembly, variable speed fork assembly, spacing fork assembly, steering fork assembly and safety clutch assemblies and other components form. Through which the engine power and movement according to different parameters passed to the running gear and transplanting institutions.

 

1.2.3 transplanting arm basic structure and working principle PF455S transplanter transplanting arm a total of four, two one group was symmetrical shape. Pressed out mainly by transplanting arm arm assembly, seeding needle implantation implantation fork assembly and arm housing, whose purpose is to cut out from the seedling box seedling block and planting the field. 1.2.4 Basic structure transplanting transplanting sprocket chain box box has two, symmetrical, it is mainly the case, the drive sprocket. Driven sprocket, chain and tensioning spring components.

 

1.2.5 The hydraulic control system hydraulic control system consists of hydraulic pumps, cylinders, control valves, control valves arm, profiling interlocking arm, hydraulic linkage arm, control handle and connecting wires and other components. Hydraulic control valve control based on the different ways that it can be divided into the handle controlled hydraulic lifting system and the floating plate controlled hydraulic copying insertion depth control system.

 

    1) handle controlled hydraulic lifting system. Hydraulic lifting system control handles a total of three positions: "up", "fixed", "down." When the hydraulic control handle is in the "up" position, the lever arm of the connecting wire to drive the control valve operation, the hydraulic valve arm leaned back projection 10 mm, the cylinder fuel supply pump, the fluid flows from left to right, push rod move to the right. As the piston rod and profile interlocking arm is connected to drive the boom to move up even profiling, profiling by adjusting the bolts connecting the boom arm with sprocket driven profiling box (sprocket box and contoured arm rigidly connected) around drive shaft rotated a certain angle upwards, so that the body up to a certain height relative to the ground, the increase in the body.

 

    2) hydraulic copying automatic insertion depth control system. Hydraulic copying automatic insertion depth control system through the use of the floating plate and changing the relative position between the body to control operation of the hydraulic cylinder, traveling wheels and the body changes position so that the body and the floating plate to maintain a relatively stable position, thereby to stabilize The purpose of planting depth.

 

    When transplanter transplanting operation in the fields, the hydraulic lever should be in the "down" position, so close to the ground floating slab. Field is not usually the case, the floating plate with respect to the level of the field surface for the body fluctuate. Floating plate with a connecting rod and the hydraulic boom connection. When the float is floating under the board, driven hydraulic interlocking arm and hydraulic valve arm rotation, which in turn affects the control valve action (basic principles and control systems handle the same), the completion of the body's automatic lifting. Such as in the field of planting depth of the body's self-regulation, basically consistent.

 

2 Design and Improvement

 

2.1 Improved speed board design echoing the handle

 

    The diameter of the handle panel governor echoed from the previous 25.4 mm to 27.2 mm. Improve program design so many reasons, but the abundance of largely because not installed in place. In theory, the diameter of the handle bracket is 25.4 mm, but this size does not take into account the cumulative tolerances, to be related accessories tolerances accumulate, it will result in tolerance. Are proven to improve the operation of this part of the success.

 

2.2 Improved Design attachment plate

 

The original attachment board material selected to meet the accuracy requirements of the design, the problem is in the middle holes. Attachment plate structure 3 as shown in prison.

 

After the actual component assembly, draw the following solutions: the position of the hole to the right offset 1 mm, down shift 3 mm. In this state, you can complete the correct action.

 

3 Conclusions

 

    PF455S is a suitable transplanter used in China, but its application, there are some drawbacks. Powered by introducing PF455S transplanter design principles and key parameters of the study found that part of the problem and discussion to solve the side away from the control handle problems. After this improved design, reduce production costs and improve the quality of operations.