CN102787619B - Handheld grooving machine - Google Patents
Handheld grooving machine Download PDFInfo
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- CN102787619B CN102787619B CN201110125525.4A CN201110125525A CN102787619B CN 102787619 B CN102787619 B CN 102787619B CN 201110125525 A CN201110125525 A CN 201110125525A CN 102787619 B CN102787619 B CN 102787619B
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- connecting rod
- cutting member
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- held
- line portion
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Abstract
A handheld grooving machine includes a connection rod extending along a lengthwise direction; a main handle arranged at one end of the connection rod; and a working head arranged at the other end of the connection rod. The working head includes a cutting member mounted on the connection rod and used for grooving, the cutting member includes a first cutting part and a second cutting part arranged at an interval, a wire holding part for holding wires is arranged between the first cutting part and the second cutting part, and the periphery of the cutting member goes beyond the periphery of the wire holding part. The inventive handheld grooving machine is simple in structure, low in cost and easy to operate, and can bury wires while grooving to achieve convenient use.
Description
Technical field
The present invention relates to a kind of hand-held groover, especially a kind of hand-held groover for carrying out slotting on the ground such as garden, meadow.
Background technology
At present, along with the quickening of human lives's rhythm, the household equipment of automation more and more receives an acclaim in the whole world.Do not need manpower to manipulate all the time because it can carry out work automatically, people can free from heavy home tasks, thus obtain more lie Fallow Time.The household equipment of this automation comprises the automatic cleaner being such as mainly used in home cleaning, also comprises the automatic mower etc. being mainly used in garden.
The household equipment of this kind of automation has some technical issues that need to address, comprises and will divide working region, makes it in this working region, carry out work.A general idea arranges sideband signal device on the border of working region.Sideband signal device can send signal to self-action equipment, is beyond the boundary when avoiding equipment to work.For for automatic cleaner, its working environment room often, the wall of room surrounding just constitutes border.Automatic cleaner just can perceive border when colliding wall, so wall just makes automatic cleaner be limited in working in this working region, room.But for automatic mower, its working environment is broad meadow, does not have wall to make boundary obstacles.Therefore common way lays a boundary line on region, meadow, and boundary line connection signal generator enables boundary line produce the signal detected by hay mover.Hay mover just can judge whether to be in working region according to signal, and then selects corresponding mode of operation.
Generally, after user have purchased automatic mower, producer can visit and lay according to the requirement of user the boundary line needing automatic mower mowing region, can be laid the big machinery of notching line-embedding by some, or by some electronic or hand-operated tools flutings, then manual boundary line to be placed in groove.Such mode needs the manpower costed a lot of money usually, and spended time again, thus the added value causing user to buy automatic mower increases.When although user needs to adopt existing instrument such as scoop, hoe also can be used for grooving when change mowing region, but the irregular easy destruction lawn of the groove dug out, and the degree of depth differs when sunkening cord, thus user cannot spread line voluntarily, producer also has to send special messenger to visit to spread line to user.
This shows, because existing instrument uses inconvenience, thus cause the somewhat expensive of notching line-embedding, and not easily change, extra service need attach when selling automatic mower in producer, user uses during change boundary line to be needed to pay very large manpower or financial resources, and these all cause high purchase and use cost to user undoubtedly.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide the hand-held groover that a kind of cost is low, be easy to operation.
Another object of the present invention is to provide a kind of hand-held groover that can directly sunken cord.
The technical solution adopted for the present invention to solve the technical problems is: a kind of hand-held groover, comprising: connecting rod, and described connecting rod extends along longitudinally; Be arranged at the main handle of connecting rod one end; Be arranged at the working head of the connecting rod other end, described working head comprises the cutting member be installed on for slotting on described connecting rod, described cutting member comprises spaced first cutting part and the second cutting part, be provided with between described first cutting part and the second cutting part and put line portion for what shelve wire rod, described in the periphery of described cutting member exceeds, put the periphery in line portion.
The invention has the beneficial effects as follows: hand-held groover structure of the present invention is simple, and cost is low, be easy to operation, can sunken cord while fluting, easy to use.
Preferably, described working head also comprises the tension disc be arranged on connecting rod, described tension disc have close on described in put the end on surface, line portion, described end relative between the far-end of described longitudinally and the center line of cutting member, and is positioned at the side of cutting member at described cutting member relative to connecting rod.
Preferably, described end to described in put surface, line portion distance be less than the diameter of wire rod.
The present invention, by arranging the position of tension disc and reasonable Arrangement tension disc, can prevent from being brought out by the cutting member rotated by the line imbedded in groove in operating process, and operation is reliable.
Preferably, described connecting rod is provided with the wire installation that will put described in wire guide in line portion, and described wire installation has wire hole, and described wire hole is positioned at the opposite side of described cutting member relative to connecting rod.
Preferably, described wire installation is helical ring.
Preferably, described connecting rod is provided with assist handle, described assist handle and described wire hole homonymy, and described assist handle is less than 1/3rd of described connecting rod total length to the distance of main handle.
Further, described cutting member is plate-like.
Preferably, the peripheral diameter of described first cutting part is greater than the peripheral diameter of described second cutting part.
The present invention, by the first cutting part of arranging peripheral diameter and varying in size and the second cutting part, reduces the contact area with ground, thus increases pressure, operate more laborsaving when fluting.
Preferably, described cutting member can rotate relative to connecting rod.
Preferably, put line portion described in also to rotate along with cutting member with described cutting member is coaxial.
Preferably, the rotation of described cutting member is perpendicular to described longitudinally.
Preferably, described working head also comprises and the depthkeeping cylinder being arranged at cutting member side, puts the periphery in line portion described in the periphery of described depthkeeping cylinder is less than.
Preferably, described depthkeeping cylinder can rotate around same axis relative to described connecting rod together with described cutting member.
Preferably, described connecting rod is provided with pedal, and described pedal is less than 1/3rd of described connecting rod total length to the distance of working head.
Preferably, dismountablely on described connecting rod be provided with drum bracing frame, described drum bracing frame is less than 1/2nd of described connecting rod total length to the distance of main handle.
Accompanying drawing explanation
Be described in further detail below in conjunction with accompanying drawing and the preferred embodiments of the present invention.
Fig. 1 is the stereogram of hand-held groover of the present invention.
Fig. 2 is the three-dimensional exploded view of hand-held groover of the present invention.
Fig. 3 is the front view of hand-held groover of the present invention.
Fig. 4 is the sectional view along A-A line in Fig. 3.
Fig. 5 is the enlarged drawing of a part in Fig. 4
Fig. 6 is the stereogram that drum installed by hand-held groover of the present invention.
Fig. 7 is the front view in hand-held groover cutting process of the present invention.
Wherein, related elements reference numeral is as follows:
10. hand-held groover 2. connecting rod 3. main handle
4. working head 5. assist handle 6. drum bracing frame
7. pedal 8. wire installation 40. cutting member
41. first cutting part 42. second cutting part 43. depthkeeping cylinders
Line portion put by 44. tension disc 45. supporting plates 46.
21. head rod 22. second connecting rod 80. drums
81. wire rod 82. wire holes 461. first put line portion
461. second put line portion
Detailed description of the invention
With reference to Fig. 1 and Fig. 5, the invention discloses a kind of hand-held groover 10, comprise connecting rod 2, be arranged at the main handle 3 of connecting rod one end, be arranged at the working head 4 of the connecting rod other end, working head 4 comprises the cutting member 40 for cutting fluting be installed on mutually on connecting rod 2, and cutting member 40 has two spaced cutting edges, be provided with between two cutting edges and put line portion 46, the periphery of cutting member 40 exceeds the periphery of putting line portion 46.Put line portion 46 for shelving wire rod, here wire rod mainly refers to electric wire, cable, the wire rods such as holding wire, the cross sectional shape of these wire rods can be circular, rectangle, leg-of-mutton etc., and the width putting line portion 46 can decide according to the accommodating width of wire rod, its accommodating width of wire rod as circle is its diameter, its accommodating width of the wire rod of rectangle is its width, its accommodating width of the wire rod of equilateral triangle is its summit to the height on base etc., between 1 to 3 times of accommodating width of the width putting line portion 46 preferably wire rod, such groove width is little, cabling is more straight.That the preferred cutting member of the present invention 40 is plate-like and can rotate relative to connecting rod 2, put line portion 46 and cutting member 40 is coaxial arranges and can rotate together with cutting member 40.Cutting member 40 during fluting can be become rolling relative to the slip on ground like this, reduce friction thus operate more laborsaving.When needs are sunken cord after grooving, only wire rod 81 need be shelved on part and put in line portion 46, grip main handle 3 and promote cutting member 40 and rotate, cutting member 40 is slotted, and wire rod 81 can be embedded in the groove held successfully.
Cutting member 40 comprises spaced first cutting part 41 and the second cutting part 42, put line portion 46 between the first cutting part 41 and the second cutting part 42, wherein the peripheral diameter of the first cutting part 41 is greater than the peripheral diameter of the second cutting part 42, the first cutting part 41 kiss the earth before this when slotting, because contact area is little, so large to the pressure on ground, thus more laborsaving during fluting.First cutting part 41 and the second cutting part 42 both can be the cutting edges arranged side by side of two on a cutting member 40, also can be two just by the cutting member of individual setting, put line portion 46 can take shape in separately on one of them cutting member, also can be on two cutting members respectively shaping two put line portion 461,462, put line portion for two and be oppositely arranged and formed.The periphery of putting line portion 46 should be greater than the diameter of the wire rod that need bury to the distance (putting the distance of periphery to the second cutting part 42 periphery in line portion 46) of cutting member 40 periphery, preferably be greater than the twice of the diameter of the wire rod that need bury, such wire rod is shelved on the wire rod put in line portion 46 and is not easy from the side of the second little cutting part 46 of peripheral diameter out.The rotation of the preferred cutting member 40 of the present invention is perpendicular to the longitudinally of connecting rod 2, when operation, cutting edge is perpendicular to ground like this, point-blank, operating so just can be more laborsaving for the force direction of operator and the force direction of cutting edge.Certainly, cutting member 40 also can only include a cutting part, as long as line portion 46 is put in its side.
With reference to shown in Fig. 3, working head 4 also comprises the tension disc 44 be arranged on connecting rod 2, and tension disc 44 is parallel to the Plane of rotation of cutting member 40.The similar sickle shaped of tension disc 44, its have the tip end that closes on and put surface, line portion 46 and with the curved edge put surface, line portion 46 and press close to, tension disc 44 tip end is arranged in the M region of figure along cutting member 40 far-end of connecting rod 2 axis direction, subaerial one end is faced when M region is positioned at groover work in other words, and relative to connecting rod 2 be positioned at cutting member 40 side (tension disc 44 tip end at cutting member 40 relative between the far-end of connecting rod 2 longitudinally and the rotation of cutting member 40 or center line, and the side of cutting member 40 is positioned at relative to connecting rod 2.)。Because operator is different, when operating groover, connecting rod 2 is just different relative to the angle of inclination on ground, and when notching line-embedding, wire rod and earth are all contained in be put in line portion 46, tension disc 44 is arranged in diagram M region can ensure that line and earth can separate with cutting member 40 by tension disc 44, in case wire rod brings out by the cutting member 40 of spin-ended turn again in the groove held successfully.Certainly, as long as the distance of tip end bottom cutting member 40 of tension disc 44 is less when groover works, its effect of wire rod and cutting member 40 being separated is better.And the end of tension disc 44 is less than the diameter of shelved wire rod to the distance of putting surface, line portion 46, can ensure that the cutting member 40 rotated can not be carried earth secretly and cross tension disc 44 like this.Tension disc 44 is fixed relative to connecting rod 2 by the supporting plate 45 that can be fixed on connecting rod 2, tension disc 44 is connected with the mode of supporting plate 45 by screw or buckle, also can be that tension disc 44 and supporting plate 45 integral type are arranged, as long as tension disc 44 has the part of closing on and putting surface, line portion 46.
With reference to shown in Fig. 2, working head 4 also comprises the depthkeeping cylinder 43 coaxially arranged with the rotation of cutting member 40, and depthkeeping cylinder 43 is fixed relative to cutting member 40, and namely depthkeeping cylinder 43 can rotate relative to connecting rod 2 together along with cutting member 40.Be supported on ground when depthkeeping cylinder 43 is for slotting, prevent cutting member 40 to be too deep into the ground when slotting, alternatively depthkeeping cylinder 43 determines the degree of depth that can slot.The diameter of depthkeeping cylinder 43 is less than the diameter putting line portion 46, wire rod can be imbedded the certain degree of depth in ground like this.In order to alleviate the overall weight of hand-held groover, depthkeeping cylinder 43 can be made up of plastics or light material, and it is connected together by the conventional connected mode such as screw or buckle and cutting member 40 and connecting rod 2.If arrange two cutting members, can be to put line portion 46 and be shaped in two ends or the middle part of depthkeeping cylinder 43, two cutting members lay respectively at the both sides of putting line portion 46, or put line portion 46 for the form such as pad, collar, two ends or the middle part of depthkeeping cylinder 43 can be set in, if certainly put the middle part that line portion 46 is positioned at depthkeeping cylinder 43, so the two end supports of depthkeeping cylinder 43 is in the both sides of cutting member 40, and balance is compared in the stressed meeting of the both sides of the cutting member 40 that operates.
On connecting rod 2, the position of contiguous cutting member 40 is provided with wire installation 8, wire guide can be put in line portion 46 by wire installation 8.Wire installation 8 has line-entering hole and wire hole, and wire hole is towards the surface of putting line portion 46, and itself and tension disc 44 lay respectively at the both sides of cutting member 40 relative to connecting rod 2.Wire installation 8 can be tubulose, also can be ring-type, and the preferred wire installation 8 of the present invention is helical ring structures, can be clearly seen that the guiding process of wire rod like this, also can conveniently regulate entering of wire rod, thus can prevent the generation of card line.
Position connecting rod 2 closing on main handle 3 is provided with assist handle 5, namely along the longitudinally of connecting rod 2, assist handle 5 is less than the distance of assist handle 5 to working head 4 to the distance of main handle 3, preferably assist handle 5 is less than 1/3rd of connecting rod 2 total length, so just handled easily to the distance of main handle 3.Assist handle 5 and wire hole are positioned at the homonymy of cutting member 40, and such handled easily person grasps direction when slotting, thus can output more straight groove.
Continue with reference to Fig. 2, in order to slot time can by the strength of foot, hand-held groover of the present invention arranges pedal 7 in the position of contiguous working head 4, pedal 7 can be fixed on connecting rod 2, operator can regulate pedal 7 to the distance of cutting member 40 according to service condition, thus conveniently makes operation lighter when notching line-embedding.Pedal 7 all should be less than 1/3rd of connecting rod 2 total length to the distance of working head 4 near-end or far-end, and operating like this can be pleasant.The surface of pedal 7 is provided with several salient points, to increase friction, thus is not easy when operator rides above to skid.
Connecting rod 2 comprises and connects the head rod 21 of main handle 3 and the second connecting rod 22 being connected working head 4, head rod 21 and the second connecting rod 22 is dismountable links together.Connecting rod 2 being set to two parts can be instant packed.Certainly, also connecting rod 2 can be set to length can regulate, and facilitates different operators to use in different duties.
With reference to Fig. 6 and Fig. 7, generally, wire rod 81 coils on drum 80, conveniently operate, can arrange drum bracing frame 6 on connecting rod 2, drum bracing frame 6 is dismountable to be arranged between pedal 7 and assist handle 5, and drum bracing frame 6 is less than 1/2nd of connecting rod 2 total length to the distance of main handle 3, have the span of a vertical direction between such drum 80 and wire installation 8, thus cabling can be more smooth.Drum 80 can directly hang on drum bracing frame 6, if do not have drum 80, also wire rod can be spooled and hang on drum bracing frame 80.
When operation hand-held groover of the present invention, mainly comprise the following steps: the top of wire rod 81 is fixed relative to ground, can by fixing the top of wire rod at ground nailing, or by the top of wire rod, the top of wire rod is fixed by the mode of tying up on a fixture; Then, put in line portion 46 along the end of wire rod 81 to the direction at top and the direction of rotation part that is wrapped in the same way of cutting member 40; Next adjust the position of hand-held groover 10 relative to ground, by cutting member 40 part press-in ground, gripping main handle 3 promotes cutting member 40 and rotates.So, wire rod 81 can be pressed into ground and be positioned at the groove held successfully.Certainly, above-mentioned steps also in no particular order, can be selected according to service condition voluntarily.
When comparatively wetting in the ground that will slot, put in line portion 46 between the cutting member 40 that earth can be bonded at rotation, wire rod 81 also can be taken out of in the groove held successfully, can promote after cutting member rotates at gripping main handle 3 like this, by tension disc 44 by wire rod 81 with put line portion 46 and separate and be pressed in the groove held successfully.
In addition, be wound around to prevent wire rod 81 and put in line portion 46 and can depart from, first can pass wire installation 8 before the top of wire rod 81 is fixing relative to ground, namely pass from wire hole, can ensure that the trend of wire rod is that guiding is put in line portion 46 like this.And, assist handle 5 can be gripped on the other hand and grasped the direction of slotting by assist handle 5 while gripping main handle 3 on the other hand.In addition, when by cutting member 40 part press-in ground, till depthkeeping cylinder 43 and earth surface can be pressed onto.
In order to reduce the dynamics of hand push, hand-held groover 10 of the present invention by the strength of foot, after adjusting the position of hand-held groover 10 relative to ground, can be ridden and exert a force to cutting member 40 on pedal 7.Generally, electric wire etc. are all wrapped on drum 80, in order to when slotting without the need to Mobile wire coil frequently, before the position of the hand-held groover of adjustment relative to ground, the drum 80 of collecting wire rod can be hung on described drum bracing frame 6.
The preferred work angle T of the present invention is connecting rod 2 is about 60 degree relative to ground, because it is large that the force rate that cutting member 40 part press-in ground needs is promoted its power rotating needs, this work angle can ensure the comfortableness operated.The first kiss the earth of the first cutting part 41 when operation is also pressed into ground distributor soil, then the second cutting part 42 is also pressed into ground, continue by two cutting part press-in ground until depthkeeping cylinder 43 touches ground, and wire rod 81 is along with the line portion 46 of putting between two cutting parts is pressed into ground.Advance in direction along the F of arrow shown in Fig. 7, two cutting parts rotate and jointly ground distributor are split into a groove, the rotation along with cutting member 40 in line portion 46 put by wire rod 81, under the drive of cutting member 40, drum 80 rotates and by the release of wire rod one circle, d/d wire rod 81 passes through and puts line portion 46 thus advance along with the rotation of cutting member 40 under the effect of wire installation 8.The cutting member 40 rotated and put line portion 46 and have with wire rod 81 and be clipped in being positioned between two cutting parts and put the groove trend out that the earth in line portion 46 holds successfully from ground, the wire rod 81 put in line portion 46 and earth block to prevent it along with cutting member 40 and put line portion 46 and continue to rotate by the tip end of tension disc 44, simultaneously wire rod 81 is also pressed in the groove held successfully, such cutting member 40 is slotted on ground, also be embedded in by wire rod in the groove held successfully, whole operating process is very simple simultaneously.
As can be seen from operating process above, the purport of the hand-held groover using method of the present invention is to slot and sunkens cord, and sunkens cord while namely slotting, therefore easy to operate, saves the work that operator needs secondary to sunken cord.
Claims (15)
1. a hand-held groover, comprising: connecting rod, and described connecting rod extends along longitudinally; Be arranged at the main handle of connecting rod one end; Be arranged at the working head of the connecting rod other end, described working head comprises the cutting member be installed on for slotting on described connecting rod, described cutting member comprises spaced first cutting part and the second cutting part, it is characterized in that: be provided with between described first cutting part and the second cutting part and put line portion for what shelve wire rod, described in the periphery of described cutting member exceeds, put the periphery in line portion.
2. hand-held groover as claimed in claim 1, it is characterized in that: described working head also comprises the tension disc be arranged on connecting rod, described tension disc have close on described in put the end on surface, line portion, described end faces between subaerial one end and the center line of cutting member when described cutting member work, and is positioned at the side of cutting member relative to connecting rod.
3. hand-held groover as claimed in claim 2, is characterized in that: described end to described in put surface, line portion distance be less than the diameter of wire rod.
4. hand-held groover as claimed in claim 2, it is characterized in that: described connecting rod is provided with the wire installation that will put described in wire guide in line portion, described wire installation has wire hole, and described wire hole is positioned at the opposite side of described cutting member relative to connecting rod.
5. hand-held groover as claimed in claim 4, is characterized in that: described wire installation is helical ring.
6. hand-held groover as claimed in claim 4, is characterized in that: described connecting rod is provided with assist handle, described assist handle and described wire hole homonymy, and described assist handle is less than 1/3rd of described connecting rod total length to the distance of main handle.
7. hand-held groover as claimed in claim 1, is characterized in that: described cutting member is plate-like.
8. hand-held groover as claimed in claim 7, is characterized in that: the peripheral diameter of described first cutting part is greater than the peripheral diameter of described second cutting part.
9. hand-held groover as claimed in claim 7, is characterized in that: described cutting member can rotate relative to connecting rod.
10. hand-held groover as claimed in claim 9, is characterized in that: described in put line portion and described cutting member coaxial and can rotate along with cutting member.
11. hand-held groovers as claimed in claim 9, is characterized in that: the rotation of described cutting member is perpendicular to described longitudinally.
12. hand-held groovers as claimed in claim 1, is characterized in that: described working head also comprises and the depthkeeping cylinder being arranged at cutting member side, put the periphery in line portion described in the periphery of described depthkeeping cylinder is less than.
13. hand-held groovers as claimed in claim 12, is characterized in that: described depthkeeping cylinder can rotate around same axis relative to described connecting rod together with described cutting member.
14. hand-held groovers as claimed in claim 1, is characterized in that: described connecting rod is provided with pedal, and described pedal is less than 1/3rd of described connecting rod total length to the distance of working head.
15. hand-held groovers as claimed in claim 1, is characterized in that: dismountablely on described connecting rod be provided with drum bracing frame, and described drum bracing frame is less than 1/2nd of described connecting rod total length to the distance of main handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110125525.4A CN102787619B (en) | 2011-05-16 | 2011-05-16 | Handheld grooving machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110125525.4A CN102787619B (en) | 2011-05-16 | 2011-05-16 | Handheld grooving machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102787619A CN102787619A (en) | 2012-11-21 |
| CN102787619B true CN102787619B (en) | 2015-04-22 |
Family
ID=47153193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110125525.4A Active CN102787619B (en) | 2011-05-16 | 2011-05-16 | Handheld grooving machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN102787619B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210468701U (en) * | 2019-07-01 | 2020-05-05 | 苏州科瓴精密机械科技有限公司 | Wire installation device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2289834Y (en) * | 1996-12-02 | 1998-09-02 | 辽宁省水利水电科学研究院 | Hydraulic slotted submerged membrance machine |
| CN2648776Y (en) * | 2003-08-26 | 2004-10-20 | 司良玉 | Chiselling-ridging multi-purpose plough |
| WO2005040508A1 (en) * | 2003-10-07 | 2005-05-06 | Steve Searby | Underground cable laying apparatus |
| CN101695234A (en) * | 2009-09-11 | 2010-04-21 | 王鸿智 | Grass cutter with trimming function |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5174686A (en) * | 1991-06-03 | 1992-12-29 | Gene Raymond | Pipe-laying apparatus |
| US5214868A (en) * | 1992-01-27 | 1993-06-01 | Persbacker Richard H | Apparatus for laying an underground member |
-
2011
- 2011-05-16 CN CN201110125525.4A patent/CN102787619B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2289834Y (en) * | 1996-12-02 | 1998-09-02 | 辽宁省水利水电科学研究院 | Hydraulic slotted submerged membrance machine |
| CN2648776Y (en) * | 2003-08-26 | 2004-10-20 | 司良玉 | Chiselling-ridging multi-purpose plough |
| WO2005040508A1 (en) * | 2003-10-07 | 2005-05-06 | Steve Searby | Underground cable laying apparatus |
| CN101695234A (en) * | 2009-09-11 | 2010-04-21 | 王鸿智 | Grass cutter with trimming function |
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| Publication number | Publication date |
|---|---|
| CN102787619A (en) | 2012-11-21 |
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