CN201051787Y

CN201051787Y - Manual hobbing cutter type mower

Info

Publication number: CN201051787Y
Application number: CNU2007201109717U
Authority: CN
Inventors: 吴军波
Original assignee: NINGBO SPECAR ELECTROMECHANICAL CO Ltd
Current assignee: NINGBO SPECAR ELECTROMECHANICAL CO Ltd
Priority date: 2007-06-20
Filing date: 2007-06-20
Publication date: 2008-04-30
Anticipated expiration: 2017-06-20

Abstract

A hand-operated cylinder mower comprises a frame (2), a push handle (4), land wheels (1), a hob head (6), a hob cutter (7), and a hob cutter shaft (5), wherein the handle (4) is connected with the frame (2), the land wheels (1) can be rolling arranged at two sides of the frame (2), the cutter (7) is fixed on the hob head (6), the shaft (5) is through the center of the hob head (6), while two ends of the shaft (5) are respectively arranged with a transmission gear (51) respectively meshed with an inner gear (11) of relative land wheel (1). The utility model is characterized in that the blade of the cutter (7) is bent and fixed on the hob cutter (6), while the front and back of the blade are provided with cutting angles. Compared with prior art, the utility model bends and fixes the blade of hob cutter on the hob head and arranges cutting angles at the front and back of the blade, therefore, when the mower works, the blade is cornered with grass to improve the cutting force between the blade and grass, to reduce the hurt on grass root caused by tearing grass when cuts grass, thereby effectively improving the mowing efficiency of mower.

Description

Manual hobbing-cutter type grass cutter

Technical field

The utility model relates to a kind of manual hobbing-cutter type grass cutter.

Background technology

Existing a kind of patent No. is 200410068184.1 and is called that the Chinese utility model patent of " a kind of muscle drive hobbing-cutter type grass cutter " discloses a kind of structure, its structure is made up of the road wheel that connects into shaped as frame, support, arm-rest frame and mowing mechanism, the inner ring of road wheel has gear, mowing mechanism is made of hobboing cutter and stationary knife, the pedestal of hobboing cutter is on support, this two ends device respectively have to be meshed with the inner ring gear of road wheel and form the pinion of planet circular system, stationary knife is fixed on the support, and the blade of stationary knife and the blade of hobboing cutter are tangent.This device does not need the energy, and structure is light and handy, and is easy to use, friction noise and air pollution.But its shortcoming is the hobboing cutter blade of this manual mower is straight formula design, the radian that does not have bending-type, on blade, there is not front and rear angles yet, like this when mower is mowed, roll blade will take bigger power cuts off grass, to cause the roll blade can tearing grass muscle in cutting grass and damage grass roots, so its structure is still waiting to improve.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of at above-mentioned prior art present situation and can advantageously improve cutting force between roll blade and the grass, reduce roll blade manual hobbing-cutter type grass cutter to the extent of damage of grass roots when mowing.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: this manual hobbing-cutter type grass cutter, include frame, hand-pushing handle, road wheel, hob head, roll blade and cutter shaft, described hand-pushing handle is connected with frame, and road wheel rollably is arranged at the both sides of frame, described roll blade is fixed on the hob head, and described cutter shaft is for passing the hob head center, and the two ends of cutter shaft are respectively arranged with travelling gear, this travelling gear is meshed with the inner ring gear of corresponding row travelling wheel separately respectively, it is characterized in that its blade of described roll blade is fixed on the hob head for distortion radian shape, and be provided with cutting angle in the front and back of blade.

As improvement, the angle that its anterior angle of described cutting angle and horizontal line constitute is 33～37 °, can be preferably 35 °, and the angle that its relief angle and horizontal line constitute is 106～110 °, is preferably 108 °.

Improve, described roll blade may be selected to be six to nine or multi-disc more again, specifically count tools and can decide by design, and mutual with branches such as interval be distributed on the periphery of hob head.

Its distortion radian shape spiral anglec of rotation of described roll blade is 99～101 °, preferred 100 °.

Compared with prior art, the utility model adopts its blade of roll blade is fixed on the hob head for distortion radian shape, and the front and back at blade are provided with cutting angle, like this when mower is mowed, blade and grass are formed with angle, advantageously improved the cutting force between blade and the grass, thus reduce when roll blade in cutting grass time and tearing grass muscle and damage the degree of grass roots has improved the mowing efficient of mower effectively.

Description of drawings

Fig. 1 is the STRUCTURE DECOMPOSITION figure of the utility model embodiment;

Fig. 2 is the exploded view of hobboing cutter portion and road wheel among Fig. 1;

Fig. 3 is the structure enlarged drawing of roll blade among Fig. 1;

Fig. 4 is the enlarged drawing of I portion among Fig. 3;

Fig. 5 is the cutaway view of roll blade among Fig. 1;

Fig. 6 is the outside drawing of roll blade among Fig. 1;

Fig. 7 is the outside drawing of Fig. 6 different angles.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Extremely shown in Figure 7 as Fig. 1, the manual hobbing-cutter type grass cutter of present embodiment, include frame 2, hand-pushing handle 4, road wheel 1, hob head 6, roll blade 7 and cutter shaft 5, described hand-pushing handle 4 is connected with frame 2, and road wheel 1 rollably is arranged at the both sides of frame 2, and described roll blade 7 is 7, and branch such as space be distributed on the periphery of hob head 6, certain described roll blade 7 also can be 5,6,8 or 9 or multi-disc more, specifically can decide by designing requirement.Described cutter shaft 5 is for passing hob head 6 centers, and the two ends of cutter shaft 5 are respectively arranged with travelling gear 51, and this travelling gear 51 is meshed with the inner ring gear 11 of corresponding row travelling wheel 1 separately respectively.Described roll blade 7 its blades are fixed on the hob head 6 for distortion radian shape, and are provided with cutting angle in the front and back of blade, and the angle that its anterior angle of this cutting angle and horizontal line constitute is 35 °, and the angle that its relief angle and horizontal line constitute is 108 °.Also be provided with the adjusting pressure roller 3 of regulating hob head 6 height on the described frame 2, the two ends of this adjusting pressure roller 3 are installed on the regulating block 21 on frame 2 both sides, see shown in Figure 1, and the indicator collet 22 of regulating height also is installed on the described regulating block 21, more easily to examine to determine required height by order.Governor motion is a known technology, does not here describe in detail.

Below the utility model is described in further detail:

Manual hobbing-cutter type grass cutter of the present utility model, by a plurality of be that the spiral blade at center is formed with the roller bearing, the anglec of rotation of its blade is 100 °, angle of every rotation can both form a complete shearing point with the following edge of a knife, and remain unanimity, can make blade shear careless plane equably in cutting careless process, be optimum state by a large amount of practical operations, its anglec of rotation of the spiral blade of test.Through the joint research of development department of our company and by a large amount of practical experiences, develop and have the blade of intactly cutting the grass and can fully reducing to cut careless resistance on the original basis, the special roll blade that has preceding cutting angle of producing, the rotating blade knife-edge part turns forward about 18 °, shape in an angle when cutting grass with bottom knife, under the situation of cutting careless power originally, alleviated nearly 30% dynamics, and meanwhile removed back cutting angle, alleviated the resistance between the edge of a knife, to making mower on original basis, step up higher step.When the rotary blade of documents and pocket knife mouth are sheared, each point of hobboing cutter actinal surface all with the cutter shaft central vertical, so resistance is relatively big, and there is a top rake at the knife-edge place of the utility model design, therefore the edge of a knife and roller bearing shape can fully reduce resistance in an angle during shearing.

The definition of nose angle degree a:

The angle of hobboing cutter blade of the present utility model has three, and a roll blade horizontal plane is as horizontal line, and the spiral anglec of rotation is 100 °, and two other is the front and back cutting angle of the edge of a knife, and also is as horizontal line the blade horizontal plane.

Claims

1. manual hobbing-cutter type grass cutter, include frame (2), hand-pushing handle (4), road wheel (1), hob head (6), roll blade (7) and cutter shaft (5), described hand-pushing handle (4) is connected with frame (2), and road wheel (1) rollably is arranged at the both sides of frame (2), described roll blade (7) is fixed on the hob head (6), and described cutter shaft (5) is for passing hob head (6) center, and the two ends of cutter shaft (5) are respectively arranged with travelling gear (51), this travelling gear (51) is meshed with the inner ring gear (11) of corresponding row travelling wheel (1) separately respectively, it is characterized in that its blade of described roll blade (7) is fixed on the hob head (6) for distortion radian shape, and be provided with cutting angle in the front and back of blade.

2. manual hobbing-cutter type grass cutter according to claim 1 is characterized in that the angle that its anterior angle of described cutting angle and horizontal line constitute is 33～37 °, and the angle that its relief angle and horizontal line constitute is 106～110 °.

3. manual hobbing-cutter type grass cutter according to claim 2 is characterized in that the angle that its anterior angle of described cutting angle and horizontal line constitute is 35 °, and the angle that its relief angle and horizontal line constitute is 108 °.

4. according to claim 1 or 2 or 3 described manual hobbing-cutter type grass cutters, it is characterized in that its distortion radian shape spiral anglec of rotation of described roll blade (7) is 99～101 °.

5. manual hobbing-cutter type grass cutter according to claim 4 is characterized in that its distortion radian shape spiral anglec of rotation of described roll blade (7) is 100 °.

6. according to the described manual hobbing-cutter type grass cutter of any claim of claim 1 to 5, it is characterized in that described roll blade (7) is six to nine, and branch such as space be distributed on the periphery of hob head (6).