CN2755926Y - Punching machine for cotton seedling transplant - Google Patents

Abstract

The utility model relates to a punching machine for cotton seedling transplant, which belongs to an agricultural machine. An internal combustion engine is used as power by the punching machine, when the punching machine is forwards moved, certain spacing distance holes are punched in the field, so that the holes are used for the cotton seedling transplant. After the speed of the power is changed, on one hand a machine body is driven to forwards moved by a drive device, and on the other hand, a punching head is driven to punch by a linkage gear set and a crank slide block and a swinging guide rod linkage mechanisms. When the punching head punches the holes, the punching head is moved in a constant velocity reversed mode and vertically and up and down moved corresponding to the machine body, namely the punching head is only vertically moved corresponding to the ground. The vertical movement of the punching head is supplied by the crank slide block mechanism, and the constant velocity reversed movement corresponding to the machine body is ensured by a way that the swinging guide rod mechanism drives a vertical guide rail when punching. When the utility model punches the holes, mud gets into the body, the mud is carried out of the ground, and then, punching is completed.

Description

Cotton transplantation of seedlings puncher

(1) technical field

Cotton transplantation of seedlings puncher (back abbreviation puncher) belongs to agricultural machinery.

(2) background technology

Cotton seedling balled transplanting is the cotton high yield growing technology, is used widely, but is artificial punching when transplanting, and does not have mechanically operated punching machine.

Slider-crank mechanism and oscillating guidebar mechanism are two kinds of mechanisms commonly used in the machinery.In the slider-crank mechanism, when crank rotates, drive slide block by connecting rod and do reciprocating linear motion.Oscillating guidebar mechanism when driving link rotates, by guide rod, drives the swing slide block and does reciprocating linear motion.The swing slide block movement has following characteristics: 1, quickreturn characteristics; β _Past＞β _Return2, almost constant speed in the impulse stroke.As follows to its checking computations: (contrast Fig. 2).

For checking conveniently, perform down setting: the O point is an initial point, and the x direction of principal axis is a forward; β _{The worker}Be the impulse stroke corner

ω is that driving link rotating speed d is a D point positional value, BC=R, AB=2R, BO=1.5R, then has

$\begin{array}{cc}\frac{d}{R\sin \mathrm{\&omega;t}}=\frac{3.5R}{2R+R\cos \mathrm{\&omega;t}},& d=\frac{3.5R\sin \mathrm{\&omega;<figure-callout\; id="2"\; label="t"\; filenames="Y0322736700061.png"\; state="\{\{state\}\}">t</figure-callout>}}{2+\cos \mathrm{\&omega;t}}\end{array}$

$U_D=d^{\&prime;}=\frac{3.5\mathrm{R\&omega;}(2+\cos \mathrm{\&omega;t})\cos \mathrm{\&omega;t}+3.5\mathrm{R\&omega;}{\sin }^2\mathrm{\&omega;t}}{{(2+\cos \mathrm{\&omega;t})}^2}$

Obviously U when the D point is in the O point _DMaximum

When D is in $\mathrm{\&omega;t}=\frac{1}{3}\mathrm{\&pi;}$ Or $\mathrm{\&omega;t}=\frac{-1}{3}\mathrm{\&pi;}$ The time, U _DMinimum

U _{The worker}Max and U _{The worker}Min differs very I and thinks U _{The worker}The almost constant speed.

(3) summary of the invention

Puncher utilizes internal combustion engine to be used as power, and when walking forward, gets the hole that keeps at a certain distance away in the field, uses for cotton transplantation of seedlings.

Contrast Fig. 1: behind the power speed changing, one side drives body and moves ahead by drive gear set, driving shaft, driving wheel, and one side drives the punching head that is installed on the crank block by linkage gear group, crank block and pendulum guide rod link gear, finishes drilling operation.Crank block vertical guide rail and pendulum guide rod swing slide block are rigidly connected, and make reciprocally swinging in guide rail in front and back.Crank block crank and pendulum guide rod driving link rotate in the same way synchronously.The head that punches enters ground to withdrawing from the ground period, and the swing slide block is in the impulse stroke period, and allotment drive gear set gearratio makes the preceding line speed of swing slide block impulse stroke section speed and body oppositely equivalent, and the relative ground of vertical guide rail this moment is approximate motionless.Slider-crank mechanism provides moving both vertically of punching; Oscillating guidebar mechanism ensures when body moves ahead that the punching head has only moving both vertically of relative ground entering ground to withdrawing from the ground period.The punching head moves downward, and enters ground, and earth enters in the body, and the punching head comes downwards to after bottom dead center and rises, and earth is also taken out of in the built on stilts, body, and ground stays the hole of accomplishing fluently.Earth discharge mode has two kinds in the punching body: a kind of is the pressing plate casting, at a punching built on stilts, rises to before top dead center, and limiting plate contact top board extrudes earth in the body downwards by push rod, piston plate; Another kind is from top casting formula, and when being with earth to lay a hole in the punching head, ground earth enters in the body, with in the body with earth eject external.

Utilize puncher, the craft punching of cotton transplantation of seedlings can be become mechanical punching.

(4) description of drawings

Fig. 1 puncher operation principle sketch: 1, power and gear; 2, crank block and pendulum guide rod linkage gear group; 3, oscillating guidebar mechanism; 4, drive gear set; 5, slider-crank mechanism; 6, driving shaft and driving wheel; 7, punching head.

Fig. 2 oscillating guidebar mechanism running schematic diagram: AB is a fixture, and BC is a driving link, and ACD is a guide rod, β _{The worker}Refer to impulse stroke section angle, β _ReturnRefer to the backhaul corner, β _PastFingering journey corner, ω t are the relative drop wire corner of driving link.

Fig. 3 slider-crank mechanism and oscillating guidebar mechanism interlock schematic diagram: EF are crank, FG is a connecting rod, oscillating guidebar mechanism sign meaning is identical with Fig. 2, crank EF and driving link isogonism speed in the same way rotate, drop wire corner ω t equates relatively, crank EF center of rotation axis E can overlap with guide rod ACD swinging center line A, also can not overlap, but must be parallel.

Fig. 4 pressing plate casting punching head: 8, top board; 9, push rod; 10, piston plate; 11, a punching body.

Fig. 5 is from top casting punching head, and its casting method is when laying a hole, and the earth earth that stays in the body in the time of will beating last hole upwards ejects external.

(5) embodiment

Contrast Fig. 1: for guaranteeing puncher, two cover crank slide block mechanism run-in synchronisms are arranged preferably, two punching heads are installed, a shared cover oscillating guidebar mechanism in the field even running.Be contained in the fuselage both sides to guide rail before and after the pendulum guide rod, the as close as possible front and back of crank block vertical guide rail are to guide rail.Behind the power speed changing, pass to attachment tooth wheels 2 before, should there be clutch the centre, this clutch separately after, bent axle and punching head should be stablized and be parked near the peak, guarantee that machine can walk when not punching.Also arrangement of clutch should be arranged between power and the driving wheel 6, control power starts the row that stops of back body.The oscillating guidebar mechanism driving link is set a group length (being to get different R values among Fig. 2), and corresponding with it, drive gear set is set one group of gearratio, can obtain different pitch-rows at interval, satisfies the punching requirement of different fertility field.Puncher also has auxiliary travel wheel except that driving wheel, auxiliary travel wheel controlling party to.

Claims (5)

1, a sharp cotton transplantation of seedlings puncher, it is characterized in that: wheel type machine, power, speed changer, drive gear set, linkage gear group, crank block and oscillating guidebar mechanism are installed on the frame, and the punching head is installed on the crank block, and driving wheel and auxiliary travel wheel are below frame.

2, puncher according to claim 1 is characterized in that: the oscillating guidebar mechanism guide rail is parallel with the machine works direction of travel, and slider-crank mechanism guide rail and pendulum guide rod swing slide block are rigidly connected, and crank position is above swinging guide rails.

3, puncher according to claim 1 is characterized in that: the fixed point clutch is housed in the middle of power speed changing device and crank block and the pendulum guide rod link gear.

4, puncher according to claim 1 is characterized in that: the punching head has two kinds, and a kind of is pressing plate casting formula, and another kind is from top casting formula.

5, puncher according to claim 1 is characterized in that: driving wheel has two, and auxiliary travel wheel is a kind of to be one, and a kind of is two.

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