CN103141211A - Trimming wheel structure for grass cutting machine - Google Patents

Abstract

The invention provides a trimming wheel structure for a grass cutting machine. The trimming wheel structure comprises a machine head and a trimming wheel assembly arranged on the machine head, wherein a cylindrical table is arranged at the bottom end of the machine head; the side wall of the cylindrical table is provided with two grooves and a connecting groove for communicating the two grooves; the trimming wheel assembly comprises a bracket of which one end is sleeved on the cylindrical table and can rotate around the cylindrical table axially while the other end is provided with a roller, and a positioning structure for positioning the bracket on the cylindrical table, wherein the positioning structure is arranged on the bracket; the positioning structure can move relative to the bracket along the axial direction of the cylindrical table in a reciprocating way; and the front end of the positioning structure is arranged in any groove, and can move into the other groove along the connecting groove. The trimming wheel has the advantages of simple structure, small size, low manufacturing cost, convenience in changing the state of the trimming wheel during grass cutting and trimming, and high working efficiency.

Description

A trimming wheel structure for a lawn trimmer

technical field

The invention relates to a mower, in particular to a trimming wheel structure of the mower.

Background technique

The mower is a tool commonly used in gardening operations. People often add trimming wheels to the mower to realize the function of mowing grass and trimming edges. Existing market all is the structure that trimming wheel is fixed dead on the machine head, but this structure trimming wheel can not change, and can cause drying up when carrying out mowing machine work, uses very inconvenient, influences working efficiency.

Contents of the invention

The technical problem to be solved by the present invention is to provide a trimming wheel structure for a mowing machine. The trimming wheel has a simple structure, small size, low production cost, convenient state change of the trimming wheel during mowing and trimming, and high work efficiency.

In order to solve the above-mentioned existing technical problems, the present invention adopts the following scheme: a trimming wheel structure of a mowing machine, comprising a head and a trimming wheel assembly installed on the head, the bottom end of the head is provided with a cylindrical platform, The side wall of the cylindrical platform is provided with two grooves and a connecting groove connecting the two grooves. The trimming wheel assembly includes one end sleeved on the cylindrical platform and can rotate around the cylindrical platform axially, and The support of the roller and the positioning structure that is arranged on the support for positioning the support on the cylindrical platform, the positioning structure can move back and forth relative to the support along the axial direction of the cylindrical platform, the front end of the positioning structure is arranged in any groove and can Move along the connecting groove to another groove.

Preferably, the positioning structure includes a boss arranged on the bracket and an elastic member arranged between the bracket and the boss, the boss extends into any groove or connecting groove, and the elastic member will The top of the platform is on the groove surface of the groove where the boss is located or the groove surface of the connecting groove where the boss is located.

Preferably, the groove tops of the two grooves are higher than the groove tops of the connecting grooves, and the elastic member pushes the boss against the top of the groove where the boss is located or the top surface of the connecting groove where the boss is located. superior.

Preferably, the bottom surfaces of the two grooves are lower than the bottom surface of the connecting groove, and the elastic member pushes the boss against the bottom surface of the groove where the boss is located or the bottom surface of the connecting groove where the boss is located.

As a preference, the bracket is provided with a hole for being sleeved on the cylindrical platform, the bracket is provided with a positioning groove communicating with the inner wall of the hole, the boss and the elastic member are both arranged in the positioning groove and the boss is arranged on the On the elastic component, the positioning notch is provided with a bracket cover for limiting the elastic component and the boss in the positioning slot, and the boss is provided with a button passing through the bracket cover.

Preferably, at least one groove communicates with the bottom end surface of the cylindrical pedestal.

Preferably, the bottom of the groove connected to the bottom end surface of the cylindrical pedestal communicates with the bottom end surface of the cylindrical pedestal with a chamfer transition.

Preferably, the heights of the bosses and the connecting grooves are equal, and the widths of the bosses and the grooves are equal.

Preferably, one of the two grooves is arranged directly in front of the machine head, and the other is arranged directly behind the machine head.

Preferably, the elastic component is a spring.

As a preference, studs are provided on the upper side or the lower side or both sides of the bracket, the rollers are sleeved on the studs, the ends of the studs are threaded with screws, and the rollers are positioned on the between bracket and screw.

Preferably, a protective cover is provided at the bottom of the cylindrical platform below the trimming wheel assembly, and a mowing wheel is provided at the bottom of the cylindrical platform below the protective cover.

Preferably, the protective cover is sleeved on the cylindrical platform and fixedly connected with the cylindrical platform.

As a preference, the protective cover is connected to the cylindrical platform through screws or bolts, and the side wall of the cylindrical platform is provided with a screw column, and the screw column is provided with a through hole for the screw or bolt to pass through. Features threaded holes for screws or bolts to pass through.

Beneficial effect:

The present invention adopts a trimming wheel structure for a mowing machine provided by the above technical scheme. The trimming wheel has a simple structure, small volume, low manufacturing cost, convenient state change of the trimming wheel during trimming and trimming, and high work efficiency.

Description of drawings

Fig. 1 is a schematic diagram of the position of the trimming wheel in the state of weeding grass in Embodiment 1 of the present invention;

Fig. 2 is a schematic diagram of the position of the trimming wheel in the trimming state in Embodiment 1 of the present invention;

Fig. 3 is a schematic structural view of the trimming wheel assembly in Embodiment 1 of the present invention;

Fig. 4 is a schematic structural view of the front of the machine head in Embodiment 1 of the present invention;

Fig. 5 is a schematic structural view of the rear of the machine head in Embodiment 1 of the present invention;

Fig. 6 is a schematic structural diagram of a stent in Embodiment 1 of the present invention;

Fig. 7 is a schematic structural view of the boss in Embodiment 1 of the present invention;

Fig. 8 is a structural front view of the bracket in Embodiment 1 of the present invention;

FIG. 9 is a schematic structural view of the protective cover in Embodiment 1 of the present invention.

Detailed ways

Embodiment one:

As shown in Figures 1 to 9, a trimming wheel structure of a mowing machine includes a head 1 and a trimming wheel assembly 2 installed on the head 1, the bottom end of the head 1 is provided with a cylindrical platform 11, the Two grooves 111 and a connecting groove 112 connecting the two grooves 111 are provided on the side wall of the cylindrical platform 11. The trimming wheel assembly 2 includes one end sleeved on the cylindrical platform 11 and can rotate axially around the cylindrical platform 11. , the other end is provided with the support 24 of roller 21 and is located on the support 24 and is used to make the positioning structure that support 24 is positioned on the cylindrical platform 11, and described positioning structure can reciprocate relative to the support 24 along the axial direction of cylindrical platform 11, so The front end of the positioning structure is disposed in any groove 111 and can move into another groove 111 along the connecting groove 112 . The positioning structure includes a boss 221 arranged on the bracket 24 and an elastic member 25 arranged between the bracket 24 and the boss 221, and the boss 221 extends into any groove 111 or connecting groove 112, so that The elastic member 25 pushes the boss 221 against the groove surface of the groove 111 where the boss 221 is located or the groove surface of the connecting groove 112 where the boss 221 is located. The groove tops of the two grooves 111 are all higher than the groove tops of the connecting groove 112, and the elastic member 25 pushes the boss 221 against the groove top of the groove 111 where the boss 221 is located or the connection where the boss 221 is located. Groove 112 is on the top surface of the groove. The bracket 24 is provided with a hole 243 for being sleeved on the cylindrical platform 11, the bracket 24 is provided with a positioning groove 242 communicating with the inner wall of the hole 243, and the boss 221 and the elastic member 25 are all located in the positioning groove 242 And the boss 221 is arranged on the elastic part 25, the mouth of the positioning groove 242 is provided with a bracket cover 23 that limits the elastic part 25 and the boss 221 in the positioning groove 242, and the boss 221 is provided with a through Push out the button 22 of the bracket cover 23. At least one groove 111 communicates with the bottom surface of the cylindrical platform 11 . The bottom of the groove 111 connected to the bottom end surface of the cylindrical platform 11 is chamfered and transitioned to the bottom end surface of the cylindrical platform 11 . The height of the boss 221 is equal to that of the connecting groove 112 , and the width of the boss 221 is equal to that of the groove 111 . One of the two grooves 111 is located directly in front of the machine head 1 and the other is located directly behind the machine head 1 . The elastic member 25 is a spring. The upper side or the lower side of the support 24 or the upper and lower sides are provided with studs 241, and the rollers 21 are sleeved on the studs 241, and the ends of the studs 241 are threaded with screws, and the rollers 21 is positioned between the bracket 24 and the screw. The bottom end of the cylindrical platform 11 is located below the trimming wheel assembly 2 and is provided with a protective cover 3 , and the bottom end of the cylindrical platform 11 is located below the protective cover 3 and is provided with a mowing wheel. The protective cover 3 is sleeved on the cylindrical platform 11 and fixedly connected with the cylindrical platform 11 . The protective cover 3 is connected with the cylindrical platform 11 by screws or bolts, the side wall of the cylindrical platform 11 is provided with a screw column 114, and the screw column 114 is provided with a through hole for the screw or bolt to pass through. The cover 3 is provided with threaded holes 31 for screws or bolts to pass through.

When assembling, the roller 21 is first positioned on the stud 241 of the bracket by screws, a certain gap is provided between the stud 241 and the roller 21, so that the roller 21 can rotate smoothly, and then the elastic member 25 and the button 22 are matched into the Locate groove 242 and cover support cover 23 and form trimming wheel assembly 2 by screw fixing, as shown in Figure 3; The trimming wheel assembly 2 is matched with the cylindrical platform 11 of machine head 1 through hole 243 and the boss 221 Correspondingly fit with the groove 111 connected to the bottom end surface of the cylindrical platform 11 and connect it to the cylindrical platform 11, then fit the protective cover 3 onto the cylindrical platform 11 and screw it into the screw column on the side wall of the cylindrical platform 11 through screws or bolts 114 is fixed and locked, as shown in Figure 1; the boss 221 is pressed against the top groove surface of the groove 111 in front of the machine head by the elastic part 25, and the trimming wheel is positioned at the front of the machine head 1, which can be carried out in this state. Grass work; when trimming is required, press the button 22 and turn the bracket 24 to make the boss 221 enter the connecting groove 112, then continue to turn the bracket 24 to make the boss 221 enter the groove 111 at the rear of the machine head, release the button 22, The elastic part 25 pushes the boss 221 on the top groove surface of the groove, and at this moment the trimming wheel assembly 2 is fixed, as shown in Figure 2, the mower can trim the edge in this state; In the grass state, the operation can be reversed.

Embodiment two:

The difference from Embodiment 1 is that the bottom surfaces of the two grooves 111 are lower than the bottom surface of the connecting groove 112, and the elastic member 25 pushes the boss 221 against the bottom surface of the groove 111 where the boss 221 is located. Or the bottom surface of the connecting groove 112 where the boss 221 is located.

Except above-mentioned preferred embodiment, the present invention also has other embodiments, and those skilled in the art can make various changes and deformations according to the present invention, as long as they do not depart from the spirit of the present invention, all should belong to the scope defined in the appended claims of the present invention scope.

Claims (10)

1. A trimming wheel structure for a lawnmower, comprising a machine head (1) and a trimming wheel assembly (2) mounted on the machine head (1), characterized in that: the bottom end of the machine head (1) is provided with A cylindrical platform (11), two grooves (111) and a connecting groove (112) connecting the two grooves (111) are provided on the side wall of the cylindrical platform (11), and the trimming wheel assembly (2) It includes a bracket (24) that is sleeved on the cylindrical platform (11) at one end and can rotate axially around the cylindrical platform (11), and has a roller (21) at the other end, and is arranged on the bracket (24) to make the bracket (24) ) a positioning structure positioned on the cylindrical platform (11), the positioning structure can reciprocate relative to the support (24) along the axial direction of the cylindrical platform (11), the front end of the positioning structure is set in any groove (111) and It can move into another groove (111) along the connection groove (112). 2. A trimming wheel structure for a mower according to claim 1, characterized in that: the positioning structure includes a boss (221) on the bracket (24) and a boss (221) on the bracket (24) and the boss The elastic part (25) between (221), the boss (221) extends into any groove (111) or the connecting groove (112), and the elastic part (25) pushes the boss (221) It abuts on the groove surface of the groove (111) where the boss (221) is located or the groove surface of the connecting groove (112) where the boss (221) is located. 3. A trimming wheel structure for a mower according to claim 2, characterized in that: the top surfaces of the two grooves (111) are higher than the top surfaces of the connecting groove (112), and the elastic member (25) Put the boss (221) on the top surface of the groove (111) where the boss (221) is located or the top surface of the connecting groove (112) where the boss (221) is located. 4. A trimming wheel structure for a mower according to claim 2, characterized in that: the bottom surfaces of the two grooves (111) are lower than the bottom surfaces of the connecting groove (112), and the elastic member (25 ) Push the boss (221) on the bottom surface of the groove (111) where the boss (221) is located or the bottom surface of the connecting groove (112) where the boss (221) is located. 5. A trimming wheel structure for a mower according to claim 2, 3 or 4, characterized in that: the bracket (24) is provided with a hole (243) for being set on the cylindrical platform (11), The bracket (24) is provided with a positioning groove (242) communicating with the inner wall of the hole (243), the boss (221) and the elastic member (25) are both arranged in the positioning groove (242) and the boss (221 ) is located on the elastic component (25), and the mouth of the positioning groove (242) is provided with a bracket cover (23) that limits the elastic component (25) and the boss (221) in the positioning groove (242). The boss (221) is provided with a button (22) passing through the bracket cover (23). 6. A trimming wheel structure for a mower according to any one of claims 1 to 4, characterized in that at least one groove (111) communicates with the bottom end surface of the cylindrical platform (11). 7. A trimming wheel structure for a mower according to any one of claims 1 to 4, characterized in that: the upper side or lower side or both sides of the bracket (24) are provided with studs (241) , the roller (21) is sheathed on the stud (241), the end of the stud (241) is screwed with a screw, and the roller (21) is positioned between the bracket (24) and the screw. 8. A trimming wheel structure for a mower according to any one of claims 1 to 4, characterized in that: the bottom end of the cylindrical platform (11) is located below the trimming wheel assembly (2) and is provided with a protective cover (3 ), the bottom end of the cylindrical platform (11) is located under the protective cover (3) and is provided with a mowing wheel. 9 . The trimming wheel structure for a mower according to claim 8 , characterized in that: the protective cover ( 3 ) is sheathed on the cylindrical platform ( 11 ) and is fixedly connected with the cylindrical platform ( 11 ). 10. A trimming wheel structure for a mower according to claim 9, characterized in that: the protective cover (3) is connected to the cylindrical platform (11) by screws or bolts, and the side wall of the cylindrical platform (11) A screw column (114) is provided on the screw column (114), and a through hole for the screw or bolt to pass is provided on the screw column (114), and a threaded hole (31) for the screw or bolt to pass is provided on the protective cover (3). ).

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