CN102960328A

CN102960328A - Electric weed pulling device

Info

Publication number: CN102960328A
Application number: CN2012105087708A
Authority: CN
Inventors: 山冈敏成; 刘谦
Original assignee: Nanjing Chervon Industry Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2012-12-03
Filing date: 2012-12-03
Publication date: 2013-03-13
Anticipated expiration: 2032-12-03
Also published as: CN102960328B

Abstract

The invention discloses an electric weed pulling device. The electric weed pulling device comprises a motor and is characterized by further comprising a gearbox and a working head, wherein the gearbox is driven by an output shaft of the motor; the working head is driven by an output shaft of the gearbox; and the ratio of an input voltage value of the motor to a working torsion value of the working head is in the range of 0.72 to 4.3 Nm/V. The electric weed pulling device has the benefits that through a new scheme for the ratio of the output torsion to the input voltage and a transmission system, the electric weed pulling device, which can solve the problem that an existing electric weed pulling device is liable to be blocked and thus cannot work under the working condition of hard soil property, is provided; and the requirements of users on working efficiency and endurance time of battery pack can be met.

Description

A kind of electronic extirpator

Technical field

The present invention relates to field of power tools, be specifically related to a kind of electronic extirpator.

Background technology

Extirpator is a kind of utensil for weeds are rooted out, and electronic extirpator output of products moment of torsion in the market is smaller, when running into the harder operating mode of soil property, and the easy stall of extirpator and can not working.If improve simply the output torque of working head, this moment, the rotating speed of working head must descend, and operating efficiency is corresponding reduction also.Therefore how between the output torque of extirpator and operating efficiency, seek a balance and be in the industry urgent problem.

Summary of the invention

For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of electronic extirpator, it had both had smooth and easy the finishing that enough moments of torsion are realized the uprooting weed action, also can satisfy the requirement of user for extirpator operating efficiency and power brick cruising time.

In order to realize above-mentioned target, the present invention adopts following technical scheme:

A kind of electronic extirpator comprises motor, the working head with 0.53 times to 4.3 times torque value output torque of above-mentioned power brick load voltage value that is electrically connected the power brick of for it power supply, the gear-box that is driven by the said motor output shaft with it, is driven by the output shaft of said gear case.

Need to prove, refer to that with 0.53 times to 4.3 times output torque of above-mentioned power brick rated voltage the numerical value during as measurement unit is 0.53 times to 4.3 times of working head output torque numerical value during as measurement unit with Nm to the power brick rated voltage with V, in other words the ratio range of the load voltage value of the output torque value of working head and above-mentioned power brick is 0.53 to 4.3, but this ratio is must be to obtain in such unit Nm/V correspondence, and is lower same.

Furthermore, the gearratio of said gear case is greater than 90 to 1.

Furthermore, has at least the two-stage gear in the said gear case.

Furthermore, has tertiary gear in the said gear case.

Furthermore, the output torque of above-mentioned working head is 0.72 times to 4.3 times of above-mentioned power brick load voltage value.

Furthermore, above-mentioned power brick is the power brick with rated voltage of 3.6V.

Furthermore, above-mentioned working head is provided with plural pin-grabber.

Furthermore, also comprise: be used for holding the casing of said motor, gear-box, be used for the gauge tap of control said motor.

Furthermore, above-mentioned pin-grabber all is formed with the tip.

Furthermore, all be formed with the multiple tracks groove on the above-mentioned pin-grabber periphery.

Usefulness of the present invention is: by outputting torsion and input voltage ratio and transmission system are proposed new scheme, provide a kind of and can solve existing electronic extirpator easily stall and electronic extirpator of inoperable problem under than pan soil matter operating mode.

Description of drawings

Fig. 1 is the structural representation of a preferred embodiment of the present invention.

The implication of Reference numeral among the figure:

1, motor, 2, gear-box, 201, the output shaft of gear-box, 3, working head, 301, pin-grabber, 4, casing, 5, power brick, 6, gauge tap

Embodiment

Below in conjunction with the drawings and specific embodiments the present invention is done concrete introduction.

With reference to shown in Figure 1, extirpator of the present invention comprises: motor 1, gear-box 2, working head 3, casing 4, power brick 5 and gauge tap 6.On the motor shaft of motor 1 gear is housed, gear stretches in the gear-box 2, is meshed with gear train in the gear-box 2; The output shaft 201 of gear-box directly is connected with working head 3, can by but be not limited to the mode of interference or screw thread.Wherein motor 1 slows down by gear-box 2, obtains rotatablely moving of high pulling torque and acts on the gearbox output shaft 201, and it is moving that gearbox output shaft 201 drive working heads 3 are done synchronous rotary, and above each several part all is arranged in the casing 4.

As the design main points, the ratio (afterwards all referred to as the moment of torsion voltage ratio) that gear-box 2 offers the load voltage value of the output torque value of working head 3 and power brick 5 is controlled at 0.53-4.3(Nm/V) scope in, further this ratio range is controlled at 0.72-4.3(Nm/V) scope in, the gearratio of gear-box 2 is greater than 90:1 in addition.The extirpator that the output torque of extirpator and operating efficiency are balanced in this scope can provide enough uprooting weed moments of torsion, also can satisfy the user for the requirement of extirpator operating efficiency.

As a kind of preferred version, when power brick 3 adopts the rated voltage of 3.6V, gear-box 2 interior employing tertiary gear transmissions, gearratio is 100:1.Be configured under the different moment of torsion voltage ratios with this, the time of (the general work head rotates and substantially finishes the uprooting weed action three weeks) is added up such as table 1 to 3 three weeks of idle running of working head.

Table 1

As shown in table 1, can see the moment of torsion voltage ratio when 0.72-4.3, the time that working head 3 rotates three circles all is no more than 5 seconds, belongs to the higher situation of efficient.

We are in a container, evenly spreading soil powder in small, broken bits is to certain thickness, then by the formed soil horizon of uniform pressure compacting, consist of test soil, when we still adopt the rated voltage of 3.6V with power brick 3, gear-box 2 interior employing tertiary gear transmissions, gearratio is that the extirpator of 100:1 inserts this test soil and carries out working condition under different moment of torsion voltage ratios, the time that working head 3 rotates three circles is added up again, we carry out 5 tests, result such as table 2 for same moment of torsion voltage ratio.Need to prove that the zone distance each other of the insertion of each test is large, does not impact mutually.

Table 2

We can find out by table 2, working head 3 hinders all to some extent decline of (offered load) rotating speed because be subject to soil in soil, different is, it is more severe that the rotating speed that moment of torsion is less (calculating in proportion) descends, in the situation of moment of torsion voltage ratio 0.5, in addition can not be complete finish three rotations, in the scope that the present invention chooses, time all can be controlled at about 5 seconds, is the time that relatively suits.If ratio is excessive, namely the moment of torsion of output is excessive, and unnecessary moment of torsion there is no substantial contribution to the uprooting weed action, causes the waste of power brick energy, shortens the cruising time of power brick, so that power brick needs frequent charge.

As preferably, casing 4 can be the gun type shell, power brick 5 and gauge tap 6 are installed in " handle " part of

casing

4,2 one-tenth one row of direct current generator 1 and gear-box are installed in " bore " part of casing 4, and the opening that the part of working head 3 is located to form at " muzzle " by casing 4 is fixedly connected with the output shaft formation of gear-box.

When carrying out uprooting weed, the pin-grabber 301 of working head 3 is inserted in the weeds root earth, the rear working head 3 of machining rotates in soil, cuts off grass roots and contacting of earth all around, realizes separating of grass roots and earth, thereby weeds are rooted out.

As preferred version, pin-grabber 301 is formed with the multiple tracks groove on tip and the periphery.

Enough uprooting weed moments of torsion can be provided among the present invention, also can satisfy the requirement of user for extirpator operating efficiency and power brick cruising time.

More than show and described basic principle of the present invention, principal character and advantage.The technical staff of the industry should understand, and above-described embodiment does not limit the present invention in any form, and all employings are equal to replaces or technical scheme that the mode of equivalent transformation obtains, all drops in protection scope of the present invention.

Claims

1. electronic extirpator comprises motor and the power brick of power supply for it, it is characterized in that, also comprises: the gear-box that is driven by the said motor output shaft, with the working head of 0.53 times to 4.3 times torque value output torque of above-mentioned power brick load voltage value; The said gear case consists of torque drive with above-mentioned working head and is connected.

2. electronic extirpator according to claim 1 is characterized in that, the gearratio of said gear case is greater than 90 to 1.

3. electronic extirpator according to claim 2 is characterized in that, has at least the two-stage gear in the said gear case.

4. electronic extirpator according to claim 3 is characterized in that, has tertiary gear in the said gear case.

5. according to claim 1 to the described a kind of electronic extirpator of 3 any one, it is characterized in that the value of the output torque of above-mentioned working head is 0.72 times to 4.3 times of above-mentioned power brick load voltage value.

6. a kind of electronic extirpator according to claim 5 is characterized in that, above-mentioned power brick is the power brick with rated voltage of 3.6V.

7. a kind of electronic extirpator according to claim 6 is characterized in that above-mentioned working head is provided with plural pin-grabber.

8. a kind of electronic extirpator according to claim 7 is characterized in that, also comprises: be used for holding the casing of said motor, gear-box, be used for the gauge tap of control said motor.

9. a kind of electronic extirpator according to claim 8 is characterized in that above-mentioned pin-grabber all is formed with the tip.

10. a kind of electronic extirpator according to claim 9 is characterized in that, all is formed with the multiple tracks groove on the above-mentioned pin-grabber periphery.