TW201620374A - Cutting mower - Google Patents

Abstract

A cutting mower is disclosed. The cutting mower includes a frame body, a power supply unit, a driving unit, a first long knife and a second long knife. The frame body includes a grip part and a work part. The power supply unit is disposed on the frame body. The driving unit includes an axle, a driving gear, a first crank, a second crank, a first connecting plate and a second connecting plate. The driving gear is coupled with the axle and connected to the power supply unit. The first crank and the second crank are connected to the driving gear, and the first connecting plate and the second connecting plate are connected to the first crank and the second crank, respectively. The first long knife and the second long knife are disposed on the work part and connected to the first connecting plate and the second connecting plate and have a plurality of first blades and a plurality of second blades, respectively. The first long knife and the second long knife are stacked. The power supply unit drives the driving gear to rotate, the driving gear drives the first crank and the second crank to move, and the first crank and the second crank drive the first long knife and the second long knife to perform a reciprocating movement so as to make the first blades and the second blades to perform staggered cutting operations.

Description

Shear mower 【0001】

This case relates to a lawn mower, especially a shear mower that performs reciprocating cross-cutting through two elongated cutters to realize mowing work.

【0002】

Weed control is an important and indispensable step in the implementation of organic or grass cultivation in crops. In general, weed control operations can be accomplished by means such as chemical agents, plastic cloth coverings or lawn mowers or implements. However, weed control by chemical or plastic cloth covering is extremely unfriendly to the environment and is prone to environmental problems. Therefore, the use of lawn mowers for weed control operations has become mainstream.

[0003]

At present, lawn mowers can be roughly divided into riding lawn mowers, self-propelled lawn mowers, push-type lawn mowers, and backpack-type lawn mowers, which can be based on crops between fields (such as organic orchards or tea gardens). Choose the size of the space and the needs of the use. When there is a large space between the crop rows, the weed cutting operation can be performed using a machine such as a riding lawn mower, a self-propelled lawn mower, a hand-push lawn mower or a backpack-type lawn mower. When the crop rows are small, weeds can be used for weed cutting operations, such as self-propelled lawn mowers, hand-push lawn mowers or knapsack mowers. However, the riding lawn mower has a large volume, is limited by environmental space, cannot be lightweight, and is difficult to operate. In addition, the backpack mower has a burden on the user and is time consuming and efficient. Low and costly labor costs, so the push-type lawn mower or self-propelled lawn mower is relatively less restricted by environmental space, and has the advantages of light labor and high efficiency.

[0004]

The structure of a hand-push lawn mower or a self-propelled lawn mower generally includes a frame, a wheel set, a driving device and a lawn mower, wherein one end of the frame has a handle, and the other end of the frame is provided with a lawn cutter. The wheel set is attached to the frame, and the driving device is disposed on the frame and drives the lawn mower to operate. During operation, the user holds the handle and applies downward force to maintain the mowing blade at the desired height while moving the lawn mower through the wheel set and driving the lawn mower to rotate the weeding device for weeding operation.

[0005]

However, the lawn mowers of the aforementioned lawn mowers are mostly circular saw blades, circular motion tools or single cutters driven by lever fingering. The structure of the driving device is relatively complicated, and only a single cutter can be driven to operate. Can not improve the efficiency of mowing work. In addition, such conventional mowing tools are also easy to fly out and injure people when they touch an obstacle due to circular motion, thereby causing operational safety problems. Furthermore, the driving device and the cutter of the conventional lawn mower directly contact the weeds, crops or other obstacles on the ground when the lawn mower travels, so that the resistance of the lawn mower is easily caused, thereby reducing the mower. Mowing work efficiency.

[0006]

The purpose of the present invention is to provide a shear mower which is driven by a driving unit to drive two long-shaped cutters to reversely reciprocate and move, not only to perform weed cutting operation in a manner of small symmetrical vibration, but also to drive at the same time. The two tools operate to improve the mowing operation ability and efficiency.

【0007】

Another object of the present invention is to provide a shear mower which is simple, safe, lightweight, and foldable.

[0008]

Another object of the present invention is to provide a shear mower that can be applied to a hand-pushing or self-propelled mower, which is less limited by the inter-row space between the crops and has the advantage of being light and labor-intensive. The driving unit disposed in the central area of the two elongated cutters drives the two long-shaped cutters to reversely reciprocate and interlace, which can effectively reduce the vibration force of the shear mower feedback to the user's hand, and increase the comfort of the operation.

【0009】

Another purpose of the present invention is to provide a shearing mower that has a mowing area per unit time that is larger than the mowing area of the knapsack when used between crop rows, and can improve the user's use of shearing between crop rows. Mowing efficiency of the lawn mower.

[0010]

In order to achieve the above object, a broader aspect of the present invention provides a shear mower comprising: a frame having a grip portion and a working portion; a power supply unit disposed on the frame; a drive unit, setting The working part includes a shaft portion, a driving wheel, a first crank, a second crank, a first connecting plate and a second connecting plate, wherein the driving wheel is pivotally connected to the shaft portion and coupled to the power supply unit, the first crank and the The second crank is respectively coupled to the driving wheel, and the first connecting plate and the second connecting plate are respectively pivotally connected to the first crank and the second crank; the first elongated cutter is disposed on the working portion and connected to the first link a first elongated cutter having a plurality of first cutting edges; and a second elongated cutter disposed on the working portion and connected to the second connecting plate, the second elongated cutter having a plurality of second cutting edges, wherein the first length The shape cutter and the second elongated cutter are stacked on top of each other; wherein the power supply unit drives the drive wheel of the drive unit, the drive wheel drives the first crank and the second crank to move, and the first crank and the second crank respectively drive the first length Shape cutter and Elongate cutter reciprocates to enabling a first plurality of elongated cutter first cutting edge of the tool and a second plurality of elongate second shear blades staggered.

[0026]

1‧‧‧Cutting lawn mower
2‧‧‧Rack
21‧‧‧First bracket
22‧‧‧second bracket
23‧‧‧ grip
24‧‧‧Working Department
3‧‧‧Power supply unit
31‧‧‧ drive shaft
32‧‧‧ Gears
4‧‧‧ drive unit
40‧‧‧Axis
41‧‧‧Drive wheel
41a‧‧‧ first surface
41b‧‧‧ second surface
411‧‧‧First eccentric
412‧‧‧Second eccentric
413‧‧‧First convex axis
414‧‧‧second convex axis
42‧‧‧First crank
421‧‧‧First main pivot hole
422‧‧‧First pivot hole
43‧‧‧second crank
431‧‧‧Second main pivot hole
432‧‧‧Second pivot hole
44‧‧‧First link board
45‧‧‧Second link board
46‧‧‧First oil plate
47‧‧‧Second oil plate
48‧‧‧First gasket
49‧‧‧second gasket
51‧‧‧First long tool
51a‧‧‧first blade
51b‧‧‧first guide
52‧‧‧Second long tool
52a‧‧‧second blade
52b‧‧‧Second guiding channel
53‧‧‧Upper cover
54‧‧‧Under cover
55‧‧‧Shell
53a, 54a, 55a‧‧‧ Locking holes
56‧‧‧Fixed components
61‧‧‧ Wheel set
62‧‧‧Axle
7‧‧‧Tool height adjustment device
71‧‧‧ boards
72‧‧‧Connecting parts
8‧‧‧Grassing device
81‧‧‧First row of grass cover
82‧‧‧Second row of grass cover

[0011]

FIG. 1A is a schematic structural view of a shear mower according to a preferred embodiment of the present invention.
Figure 1B is a schematic view of the shear mower of Figure 1A in a folded state.
Fig. 2 is an enlarged view showing a partial structure of a shear mower of Fig. 1A.
Fig. 3 is a schematic view showing the structure of the cutter and the cover of the shear mower of the present invention.
Figure 4 is a partial schematic view showing the structure of the driving unit of the shear mower of the present invention.
Figure 5 is an exploded view of a portion of the structure of the drive unit of Figure 4.
Figure 6 is a cross-sectional view of the drive unit of Figure 4.

[0012]

Some exemplary embodiments embodying the features and advantages of the present invention are described in detail in the following description. It is to be understood that the present invention is capable of various modifications in various aspects, and is not intended to limit the scope of the invention.

[0013]

Please refer to FIG. 1A and FIG. 1B. FIG. 1A is a schematic structural view of a shear mower according to a preferred embodiment of the present invention, and FIG. 1B is a sectional mower of FIG. 1A in a folded state. schematic diagram. The shear mower 1 of the present invention includes a frame 2, a power supply unit 3, a drive unit 4, a first elongated cutter 51, and a second elongated cutter 52. The frame 2 includes a first bracket 21, a second bracket 22, a grip portion 23, and a working portion 24. As shown in FIG. 1A and FIG. 1B, the first bracket 21 is foldably pivotally connected to the second bracket 22, and the grip portion 23 is disposed on the first bracket 21 for the user's hand to hold and work. The portion 24 is provided on the second bracket 22. The power supply unit 3 is disposed on the second bracket 22 of the frame 2 and located between the grip portion 23 and the working portion 24, and the power supply unit 3 is connected to the driving unit 4 to provide power for the driving unit 4. The driving unit 4 is driven to operate. In some embodiments, the power supply unit 3 can be, but is not limited to, a fuel-driven engine.

[0014]

The driving unit 4 is disposed on the working portion 24, and the driving unit 4 is structurally connected with the power providing unit 3, the first elongated cutter 51 and the second elongated cutter 52 to receive the power provided by the power providing unit 3 and drive the first long The shape cutter 51 and the second elongate cutter 52 perform reverse reciprocating interleaving. The first elongate cutter 51 and the second elongate cutter 52 are also disposed on the working portion 24, wherein the first elongate cutter 51 and the second elongate cutter 52 respectively have a plurality of serrated first cutting edges 51a on the same side and A plurality of serrated second cutting edges 52a. The first elongate cutter 51 and the second elongate cutter 52 are connected to the driving unit 4, and are driven by the driving unit 4 to perform reverse reciprocating staggering operation, so that the plurality of first cutting edges 51a of the first elongate cutter 51 are The plurality of second cutting edges 52a of the second elongated cutter 52 are alternately cut. In the present embodiment, the first elongate cutter 51 and the second elongate cutter 52 are disposed correspondingly in the upper and lower overlapping manners.

[0015]

In some embodiments, the shear mower 1 of the present invention further includes a wheel set 61 and an axle 62. The wheel set 61 is disposed on the frame 2 and between the grip portion 23 and the working portion 24 to carry the frame 2 and to move the shear mower 1 between the crop rows in the field. The two ends of the axle 62 are pivotally connected to the shaft portions of the two wheel frames of the wheel set 61, and the center of the axle 62 is fixed to the second bracket 22 so that the wheel set 61 is disposed on the frame 2, whereby the wheel set 61 is The frame 2 can be carried and the shear mower 1 can be moved.

[0016]

In some embodiments, the first bracket 21 and the second bracket 22 are respectively, for example, but not limited to, a U-shaped frame and a T-shaped frame, and the materials of the first bracket 21 and the second bracket 22 may be, but not limited to, metal materials. . The first bracket 21 and the second bracket 22 are pivotally connected by a pivoting mechanism, so that the first bracket 21 can be folded on the second bracket 22.

[0017]

Please refer to Fig. 2 and Fig. 3, wherein Fig. 2 is an enlarged view of a partial structure of the shear mower of Fig. 1, and Fig. 3 is a combination of a cutter and a cover of the shear mower of the present invention. Schematic. The shear mower 1 of the present invention further includes an upper cover 53, a lower cover 54, and a housing 55. The upper cover 53 and the lower cover 54 are disposed between the first elongated cutter 51 and the second elongated cutter 52 to prevent the foreign object or the user from accidentally touching the first elongated cutter 51 and the user. The second elongated cutter 52 enhances the safety of the mowing operation. The housing 55 has an accommodation space to accommodate the drive unit 4. The first elongate cutter 51 and the second elongate cutter 52 respectively include a plurality of first guiding grooves 51b and a plurality of second guiding grooves 52b arranged at intervals, and the upper cover plate 53 and the lower cover plate 54 respectively have a plurality of locking holes 53a, 54a, and the housing 55 have a plurality of locking holes 55a, wherein the plurality of first guiding grooves 51b and the plurality of second guiding grooves 52b of the first elongated cutter 51 and the second elongated cutter 52 respectively correspond to the upper a plurality of locking holes 53a of the cover plate 53 and a plurality of locking holes 54a of the lower cover plate 54, and the plurality of locking holes 55a of the housing 55 correspond to the plurality of locking holes 53a of the upper cover plate 53 (not (Fig. 3), a plurality of fixing holes 56 corresponding to the plurality of locking holes 55a of the housing 55, a plurality of locking holes 53a of the upper cover 53, and a plurality of first elongated cutters 51 The first guiding groove 51b, the plurality of second guiding grooves 52b of the second elongated cutter 52 and the plurality of locking holes 54a of the lower cover 54 enable the housing 55, the upper cover 53, and the first elongated cutter 51. The second elongate cutter 52 and the lower cover 54 are combined. In the embodiment, the upper cover 53 and the lower cover 54 are fixed to the housing 55, and the first elongated cutter 51 and the second elongated cutter 52 are separated by the plurality of first guide slots 51b and The two guiding grooves 52b are relatively movable to the upper cover plate 53 and the lower cover plate 54, so that when the driving unit 4 drives the first elongated cutter 51 and the second elongated cutter 52, the first elongated cutter 51 and the first The two elongated cutters 52 move relative to the upper cover 53 and the lower cover 54. In some embodiments, the plurality of fixing elements 56 can be a combination of a plurality of round head screws and nuts, and is not limited thereto.

[0018]

In some embodiments, the shear mower 1 of the present invention further includes a tool height adjusting device 7 including a plate member 71 and a connecting member 72, wherein the plate member 71 is fixed by the connecting member 72. The upper cover 53 and/or the lower cover 54 and at least a portion of the plate 71 are located below the first elongated cutter 51, the second elongated cutter 52 and the lower cover 54, and the connecting member 72 is adjustable The position of the plate 71. By the plate member 71 contacting the ground, and by adjusting the height of the first elongate cutter 51 and the second elongate cutter 52 from the ground by the connecting member 72, the first elongate cutter 51 and the second in the actuating operation can be avoided. The elongated cutter 52 accidentally touches foreign matter on the ground and affects work safety. In some embodiments, the tool height adjusting device 7 is made of a metal material, and is not limited thereto.

[0019]

In some embodiments, the cutting mower 1 of the present invention further includes a grass removing device 8 including a first row of grass blocking pieces 81 and a second row of grass blocking pieces 82, wherein the first row of grass blocking pieces 82 The sheet 81 and the second row of straw blocks 82 are disposed on the working portion 24 and located above the driving unit 4 and the housing 55, and the first row of grass blocking pieces 81 and the second row of grass blocking pieces 82 disposed above the driving unit 4 There is an angle to form the grass removing device 8 with the tip facing the first elongated cutter 51 and the second elongated cutter 52, so that the first elongated cutter 51 and the second elongated cutter 52 cut off the scattered weeds. It is possible to slide along the inclined faces of the first row of straw flaps 81 and the second row of straw flaps 82 of the row of grass devices 8 to avoid the resistance accumulated by the driving unit 4 to cause the cutting mower 1 to travel. In some embodiments, the grass removing device 8 is made of a metal material, and is not limited thereto.

[0020]

Please refer to FIG. 4 and FIG. 5 , wherein FIG. 4 is a partial structural diagram of the driving unit of the shear mower of the present invention, and FIG. 5 is a partial structural exploded view of the driving unit of FIG. 4 . In the present embodiment, the power supply unit 3 includes a transmission shaft 31 and a gear 32, wherein the gear 32 is fixed to the transmission shaft 31 and rotates in synchronization with the transmission shaft 31. The driving unit 4 includes a shaft portion 40, a driving wheel 41, a first crank 42, a second crank 43, a first connecting plate 44, a second connecting plate 45, a first oil deflector 46 and a second oil deflector 47, wherein the driving unit 4 The wheel 41 further includes a first eccentric wheel 411, a second eccentric wheel 412, a first convex shaft 413 and a second convex shaft 414, and the first eccentric wheel 411 and the second eccentric wheel 412 are respectively disposed on the opposite sides of the driving wheel 41. The first surface 41a and the second surface 41b are opposite to each other by 180 degrees, and the first convex axis 413 and the second convex axis 414 are respectively located at the first eccentric 411 and the second eccentric 412. surface. In some embodiments, the first eccentric 411 and the second eccentric 412 respectively have a center, and the centers of the first eccentric 411 and the second eccentric 412 are disposed on different axes. The driving wheel 41 is pivotally connected or fixed to the shaft portion 40 and is coupled to the gear 32 of the power supply unit 3, and the driving wheel 41 is rotatable by the driving of the gear 32. The first eccentric 411 and the second eccentric 412 rotate synchronously with the drive wheel 41, and the first convex shaft 413 and the second convex shaft 414 also rotate in synchronization with the drive wheel 41. The first crank 42 is located above the driving wheel 41 and has a first main pivot hole 421 and a first pivot hole 422. The first eccentric 411 of the driving wheel 41 is firstly placed on the first crank 42. The main pivot hole 421 is coupled to it, whereby the first eccentric 411 can drive the first crank 42 to reciprocate. In this embodiment, the manner in which the first eccentric wheel 411 of the driving wheel 41 and the first main pivot hole 421 of the first crank 42 are coupled can be achieved by using a tight fit, a snap fit, a toothed mesh, or the like. This is limited. The first pivot hole 422 is pivotally connected to one end of the first connecting plate 44, and the other end of the first connecting plate 44 is fixed to the first elongated cutter 51, whereby the first crank 42 can pass through the first connecting plate. 44 drives the first elongate cutter 51 to reciprocate. In some embodiments, the first pivot hole 422 of the first crank 42 and the hole of one end of the first connecting plate 44 are pivotally connected by a connecting shaft. The second crank 43 is located below the driving wheel 41 and has a second main pivoting hole 431 and a second secondary pivoting hole 432, wherein the second eccentric wheel 412 of the driving wheel 41 is disposed in the second of the second crank 43 The main pivot hole 431 is coupled to it, whereby the second eccentric 412 can drive the second crank 43 to reciprocate. In this embodiment, the connection manner between the second eccentric wheel 412 of the driving wheel 41 and the second main pivot hole 431 of the second crank 43 can be achieved by using a tight fit, a snap fit, a toothed mesh, etc., and This is limited. The second pivot hole 432 is pivotally connected to one end of the second connecting plate 45, and the other end of the second connecting plate 45 is fixed to the second elongated cutter 52, whereby the second crank 43 can pass through the second connecting plate. 45 drives the second elongate cutter 52 to reciprocate. In some embodiments, the second pivot hole 432 of the second crank 43 and the hole of one end of the second connecting plate 45 are pivotally connected by a connecting shaft.

[0021]

The first oil deflector 46 is a radial wheel and is located above the driving wheel 41, the first crank 42 and the first eccentric 411, and has a first shaft hole 461, wherein the first shaft of the first oil displacing plate 46 The hole 461 is sleeved on the first protruding shaft 413. When the shear mower 1 is used, in order to reduce the friction between the components, a lubricant may be added between the components. When the driving wheel 41 and the first crank 42 rotate, the first oil deflector 46 can be used. The splashed lubricant is re-applied to the drive wheel 41 and the first crank 42 to maintain the degree of lubrication between the components. The second oil displacing plate 47 is a radial wheel and is located below the driving wheel 41, the second crank 43 and the second eccentric 412, and has a second shaft hole 471, wherein the second shaft of the second oil absorbing plate 47 The hole 471 is sleeved on the second protruding shaft 414. Similarly, when the drive wheel 41 and the second crank 43 rotate, the second oil deflector 47 can re-apply the splashed lubricant to the drive wheel 41 and the second crank 43 to maintain the degree of lubrication between the components. In the embodiment, the shaft portion 40 sequentially passes through the first oil deflector 46, the first convex shaft 413, the first eccentric wheel 411, the driving wheel 41, the second eccentric wheel 412, the second convex shaft 414, and the first The oil slab 447 is disposed, and the first main pivot hole 421 of the first crank 42 is pivotally connected to the first eccentric wheel 411. Therefore, the shaft portion 40 simultaneously passes through the first main pivot hole 421 of the first crank 42. The second main pivot hole 431 of the second crank 43 is pivotally connected to the second eccentric 412. Therefore, the shaft portion 40 is simultaneously disposed with the second main pivot hole 431 of the second crank 43. And the second eccentric 412.

[0022]

Referring to FIG. 2, FIG. 3, FIG. 4 and FIG. 5 again, when the shear mower 1 of the present invention is operated, the drive shaft 31 and the gear 32 of the power supply unit 3 will be driven to rotate. The gear 32 of the power supply unit 3 drives the drive wheel 41 to rotate. At this time, the first eccentric 411 and the second eccentric 412 rotate synchronously with the drive wheel 41. When the first eccentric wheel 411 and the second eccentric wheel 412 rotate, the first crank 42 and the second crank 43 will be driven by the first eccentric wheel 411 and the second eccentric wheel 412 to reciprocate in opposite directions. At this time, the first crank 42 and the second crank 43 will respectively drive the first connecting plate 44 and the second connecting plate 45, and the first connecting plate 44 and the second connecting plate 45 will respectively drive the first elongated cutter 51 and The second elongate cutter 52 performs reverse staggered movement to reciprocally interlace the plurality of first cutting edges 51a of the first elongate cutter 51 and the second elongate cutter 52 with the plurality of second cutting edges 52a, thereby Interweaving cuts the weeds in a manner that the motion symmetry vibration is small. In some embodiments, the driving unit 4 is preferably located in a central region of the first elongate cutter 51 and the second elongate cutter 52, but is not limited thereto.

[0023]

Please refer to Fig. 6, which is a cross-sectional view of the driving unit of Fig. 4. In the embodiment, the first crank 42 is disposed on the second crank 43 , that is, the first main pivot hole 421 is located above the second main pivot hole 431 . The driving unit 4 further includes a first spacer 48 and a second spacer 49. The first spacer 48 is disposed at a pivotal connection between the first crank 42 and the first connecting plate 44, that is, is disposed at the first pivoting hole. 422 is interposed between the first connecting plate 44 and attached to the first pivot hole 422. The first spacer 48 separates the first crank 42 from the first connecting plate 44 to prevent the first crank 42 from contacting the first connecting plate 44 during operation, thereby causing excessive friction or abnormal operation, thereby causing shear cutting. Grass machine 1 is not working properly. The second spacer 49 is disposed at a pivotal connection between the second crank 43 and the second connecting plate 45, that is, between the second pivoting hole 432 and the second connecting plate 45, and is attached to the second pivot Hole 432. The second spacer 49 separates the second crank 43 and the second connecting plate 45 to prevent the second crank 43 from contacting the second connecting plate 45 during operation, thereby causing excessive friction or abnormal operation, thereby causing shear cutting. Grass machine 1 is not working properly.

[0024]

In summary, the present invention provides a shear type lawn mower, which is driven by a driving unit to drive two long-shaped cutters to reversely reciprocate and move, and to perform weed cutting cutting in a manner of less symmetrical vibration, which is not only a structure. Simple, safe, lightweight, foldable storage, and improved mowing operation and efficiency by simultaneously driving two cutters. The shear mower of the present invention can be applied to a hand-pushing or self-propelled lawn mower, which is less limited by the inter-row space between the crops and has the advantage of being light and labor-intensive, and is also disposed in the center of the two elongated cutters. The driving unit of the area drives the two long-shaped tools to reversely reciprocate and interlace, which can effectively reduce the vibration force of the shear mower feedback to the user's hand, and increase the comfort of operation. Furthermore, the cutting mower of the present invention can have a mowing area per unit time larger than that of the backpack mower when used between crop rows, and can improve the user's use of a shear mower between the crop rows. Mowing efficiency.

[0025]

The present invention has been described in detail by the above-described embodiments, and may be modified by those skilled in the art, without departing from the scope of the appended claims.

1‧‧‧Cutting lawn mower

2‧‧‧Rack

21‧‧‧First bracket

22‧‧‧second bracket

23‧‧‧ grip

24‧‧‧Working Department

3‧‧‧Power supply unit

4‧‧‧ drive unit

51‧‧‧First long tool

51a‧‧‧first blade

52‧‧‧Second long tool

52a‧‧‧second blade

61‧‧‧ Wheel set

62‧‧‧Axle

Claims (10)

[Item 1] A shear mower comprising:
a frame having a grip portion and a working portion;
a power supply unit disposed on the frame;
a driving unit is disposed on the working portion and includes a shaft portion, a driving wheel, a first crank, a second crank, a first connecting plate and a second connecting plate, wherein the driving wheel is pivotally connected to the shaft And being coupled to the power supply unit, the first crank and the second crank are respectively coupled to the driving wheel, and the first connecting plate and the second connecting plate are respectively pivotally connected to the first crank and the second crank ;
a first elongated cutter disposed on the working portion and connected to the first connecting plate, the first elongated cutter having a plurality of first cutting edges; and a second elongated cutter disposed on the working portion and a second web is connected, the second elongate cutter has a plurality of second cutting edges, wherein the first elongate cutter and the second elongate cutter are superposed on each other;
The power supply unit drives the driving wheel of the driving unit, the driving wheel drives the first crank and the second crank to move, and the first crank and the second crank respectively drive the first elongated cutter and the driving The second elongate knife reciprocates to cause the plurality of first cutting edges of the first elongate cutter to alternately shear the plurality of second cutting edges of the second elongate cutter. [Item 2] The shear mower according to claim 1, further comprising a wheel set disposed on the frame and located between the grip portion and the working portion. [Item 3] The cutting mower according to claim 1, further comprising a row of grass devices disposed on the working portion and located above the driving unit, the grass removing device comprising a first row of grass blocks and a second row of grass flaps, wherein the first row of grass flaps and the second row of grass flaps have an angle to form a tip portion toward the first elongate cutter and the second elongate cutter . [Item 4] The shearing lawn mower of claim 1, wherein the frame comprises a first bracket and a second bracket, the first bracket being foldably pivotally connected to the second bracket, the grip The holding portion is disposed on the first bracket, and the working portion is disposed on the second bracket. [Item 5] The shearing lawn mower according to claim 1, further comprising a casing, an upper cover and a lower cover, wherein the driving unit is disposed in the casing, the upper cover and the lower The cover plate is fixed to the housing, the first elongate cutter and the second elongate cutter are interposed between the upper cover and the lower cover, and the first elongated cutter and the second The elongate cutter is movable relative to the upper cover and the lower cover. [Item 6] The cutting mower according to claim 5, further comprising a tool height adjusting device, wherein the tool height adjusting device comprises a plate member and a connecting member, wherein the plate member is connected by the connecting member Attached to the upper cover or the lower cover, and at least a portion of the plate is located below the first elongate cutter and the second elongate cutter. [Item 7] The shearing mower according to claim 1, wherein the power supply unit comprises a transmission shaft and a gear, the gear system is fixed to the transmission shaft, and the gear train and the driving unit The drive wheels are coupled to each other to drive the drive wheel to rotate. [Item 8] The shearing lawn mower according to claim 1, wherein the driving wheel comprises a first eccentric wheel and a second eccentric wheel, respectively disposed on one of the first surface and the second surface of the driving wheel. The shaft portion is configured to pass the first crank, the first eccentric wheel, the driving wheel, the second eccentric wheel, and the second crank. [Item 9] The cutting mower according to claim 8, wherein the driving wheel further comprises a first convex shaft and a second convex shaft, respectively located at the first eccentric and the second eccentric a surface, and wherein the first crank includes a first main pivot hole and a first pivot hole, the second crank includes a second main pivot hole and a second secondary pivot hole, the drive wheel The first eccentric wheel is disposed in the first main pivot hole of the first crank, and the second eccentric wheel of the driving wheel is received in the second main pivot hole of the second crank, and the driving The unit further includes a first oil deflector and a second oil deflector, and the first oil deflector and the second oil deflector are pivotally connected to the first convex shaft and the second convex shaft, respectively. [Item 10] The cutting type lawn mower according to claim 9, wherein the driving unit further comprises a first gasket and a second gasket, wherein the first gasket is disposed on the first crank Between the first pivoting hole and the first connecting plate, the second spacer is disposed between the second pivoting hole of the second crank and the second connecting plate.