CN213586915U

CN213586915U - Handheld brush cutter

Info

Publication number: CN213586915U
Application number: CN202022319681.1U
Authority: CN
Inventors: 程雯
Original assignee: Beijing Qingqiao Landscape Greening Co ltd
Current assignee: Beijing Qingqiao Landscape Greening Co ltd
Priority date: 2020-10-17
Filing date: 2020-10-17
Publication date: 2021-07-02
Anticipated expiration: 2030-10-17

Abstract

The utility model relates to a handheld brush cutter relates to gardens repair equipment, including beating the grass head and installing the rope of beating the grass on beating the grass head, beat the grass head and include that the upper end is the open-ended drain pan, can dismantle the top cap of connection at the drain pan opening part and rotate the wire reel of connection in the drain pan, beat the grass rope winding on the wire reel, set up the through-hole that supplies the rope of beating the grass to pass on the lateral wall of drain pan, the through-hole department of drain pan is provided with supports tight fixed the subassembly of supporting to beating the rope of beating the grass. The effect that this application has is convenient for change the rope of beating the grass.

Description

Handheld brush cutter

Technical Field

The application relates to equipment is repaired in gardens, especially relates to a handheld brush cutter.

Background

The brush cutter is also called as a mower and is widely applied to weed handheld tools in places such as lawns, gardens, pastures and the like.

The brush cutter in the related art generally comprises a hollow pipe fitting, wherein one end of the hollow pipe fitting is provided with a power part, and the other end of the hollow pipe fitting is provided with a gear box; a transmission shaft is arranged in the hollow pipe fitting, one end of the transmission shaft is connected with an output shaft of the power part, the other end of the transmission shaft is connected with an input end of the gear box, a grass mowing head is arranged on the gear box, and a grass mowing rope is arranged on the grass mowing head; the grass cutting head rotates at a high speed, and the rotation inertia generated by the grass cutting rope is utilized to cut off weeds and vegetation.

In view of the above-mentioned related technologies, the inventor found that the grass-mowing cord is usually wound several turns in the grass-mowing head and then passes through the small hole on the grass-mowing head. When the grass mowing rope is abraded or broken, the upper cover and the lower cover of the grass mowing head are opened, the damaged grass mowing rope is pulled out, a new grass mowing rope is installed, the grass mowing head can be continuously used, and the use of a user is very inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to facilitate changing the grass mowing rope, the application provides a handheld brush cutter.

The application provides a handheld brush cutter adopts following technical scheme:

the utility model provides a handheld brush cutter, includes the head of beating grass and installs the rope of beating grass overhead, the head of beating grass includes that the upper end is the open-ended drain pan and can dismantle the top cap of connection at the drain pan opening part, and the drain pan includes the bounding wall, and the lower extreme rigid coupling of bounding wall has the diapire, and the rigid coupling has the fixed axle on the diapire, and the cover is equipped with the wire reel on the fixed axle, and the rope of beating grass of lapping twines on the wire reel, sets up the through-hole that supplies the rope of beating grass to pass on the lateral wall of bounding wall, and the through-hole department.

Through adopting above-mentioned technical scheme, after the rope of beating the grass is located the part outside the head of beating the grass and takes place serious wearing and tearing, remove earlier and support tight subassembly and support tightly fixedly to the rope of beating the grass, then the rope of beating the grass is beaten in the pulling, make the wire winding coil the axis of fixed axle and rotate, thereby make the wire reel be in the unwrapping wire state, make the rope of beating the grass of winding on the wire reel remove out the head of beating the grass outside, it is fixed to the rope of beating the grass again to support tight subassembly again, last staff uses the instrument of tailorring to cut short the wearing and tearing part of the rope of beating the grass, the installation of new rope of beating the grass has just so been accomplished, the.

Preferably, the drain pan includes the bounding wall, and the lower extreme rigid coupling of bounding wall has the diapire, and the rigid coupling has the fixed axle on the diapire, and the wire reel cover is established on the fixed axle, and the through-hole is seted up on the bounding wall lateral wall.

Through adopting above-mentioned technical scheme, realized that the wire reel rotates to be connected on the drain pan, wire reel and drain pan are separable moreover, and the staff of being convenient for will beat the winding of careless rope on the wire reel.

Preferably, the fastening assembly comprises a fastening piece connected to the through hole of the enclosing plate in a sliding manner and a driving spring arranged in the through hole and used for pushing the fastening piece to move, one end of the driving spring is fixedly connected to the enclosing plate, and the other end of the driving spring is fixedly connected to the fastening piece.

Through adopting above-mentioned technical scheme, when the rope of beating the grass passed the through-hole, support the tight piece and order about through drive spring's elasticity for the rope of beating the grass extrudes on the lateral wall of through-hole, thereby realizes supporting tightly fixedly to the rope of beating the grass.

Preferably, the fastening piece comprises an inner sliding plate and an outer sliding plate which are respectively fastened to the inner side and the outer side of the enclosing plate, and a connecting plate fixedly connected between the inner sliding plate and the outer sliding plate, the connecting plate is arranged in the through hole in a penetrating mode and used for fastening a grass rope, and the driving spring is fixedly connected with the connecting plate.

By adopting the technical scheme, the slide way is formed between the inner sliding plate and the outer sliding plate, and the side wall of the through hole is positioned between the inner sliding plate and the outer sliding plate, so that the abutting part is connected to the coaming in a sliding manner; the grass beating rope is directly propped and fixed through the connecting plate.

Preferably, the bottom shell further comprises a plurality of connecting columns fixedly connected to the bottom wall, and a connecting screw used for fixing the top cover on the bottom shell is inserted into each connecting column.

Through adopting above-mentioned technical scheme, realized being connected dismantled between drain pan and the top cap, made the connection stability between drain pan and the top cap better through connecting screw moreover.

Preferably, the fixed axle is cylindric, wears to be equipped with the push rod on the lateral wall of fixed axle, and push rod one end is located the fixed axle, and the other end rigid coupling has and is used for supporting the board of tightly on the wire reel, offers the screw hole with the inside intercommunication of fixed axle on the diapire, and screw hole and fixed axle interpolation are equipped with same driving piece that orders about the push pedal and move towards the fixed axle outward.

Through adopting above-mentioned technical scheme, in the staff inserted screw hole and fixed axle inside with the driving piece for the push rod removed outside the fixed axle, made the promotion support the board and supported tightly on the inner peripheral surface of wire reel, through supporting the frictional force between board and the wire reel, made the head of beating grass take place high-speed rotation back by the drive, restriction wire reel and beat and take place to rotate between the head of beating grass, made the rope of beating grass stably twine on the wire reel.

Preferably, the driving member comprises an insertion rod inserted into the fixed shaft, one end of the insertion rod is fixedly connected with a threaded rod matched with the threaded hole, and the other end of the insertion rod is fixedly connected with a conical head.

By adopting the technical scheme, when the conical head on the inserted link enters the inside of the fixed shaft, the push head is in contact with the push rod, and the push rod is pushed to move outwards towards the fixed shaft, so that the pushing of the abutting plate is abutted against the wire spool.

Preferably, a rubber layer is fixedly connected to one surface of the abutting plate, which is far away from the push rod.

Through adopting above-mentioned technical scheme for when the rubber layer supported tightly on the wire reel, elastic deformation took place for the rubber layer, increased and supported the tight power of board to the wire reel, restriction wire reel rotation better.

Preferably, one end of the push rod, which is far away from the abutting plate, is fixedly connected with a semicircular contact head.

Through adopting above-mentioned technical scheme, the sphere and the driving piece contact of contact head reduce the frictional force between push rod and the driving piece for the staff is changeed and is driven the push rod and remove towards the fixed axle outward.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the grass mowing head, the grass mowing rope, the bottom shell, the top cover, the wire winding disc, the through hole and the abutting component, a worker can firstly relieve the pressing of the abutting component on the grass mowing rope, then pull the grass mowing rope, finally drive the abutting component to abut and fix the grass mowing rope, cut the abrasion part of the grass mowing rope short, and facilitate the replacement of the grass mowing rope by the worker;

2. through bounding wall, diapire, fixed axle, realized being connected dismantled between drain pan and the top cap, make the stability of being connected between drain pan and the top cap better through connecting screw moreover.

Drawings

Fig. 1 is a schematic overall structure diagram of a brush cutter in an embodiment of the present application.

Fig. 2 is a schematic diagram of the grass cutting head explosion in the embodiment of the application.

Fig. 3 is a sectional view of the bottom case in the embodiment of the present application.

Fig. 4 is a partially enlarged schematic view of a portion a in fig. 3.

Description of reference numerals: 1. a hollow pipe fitting; 2. a handrail; 3. a power member; 4. a drive shaft; 5. a gear case; 6. grass cutting head; 61. a bottom case; 611. enclosing plates; 612. a bottom wall; 613. a fixed shaft; 614. a through hole; 615. connecting columns; 616. a connecting screw; 62. a top cover; 621. a cover plate; 622. a sleeve; 623. a connecting bolt; 624. a nut; 63. a wire spool; 64. a propping component; 641. an abutting piece; 6411. an inner slide plate; 6412. an outer slide plate; 6413. a connecting plate; 6414. anti-skid lines; 642. a drive spring; 65. a resisting plate; 651. a rubber layer; 66. a push rod; 661. a contact head; 67. a threaded hole; 68. a drive member; 681. inserting a rod; 682. a threaded rod; 683. a conical head; 7. and (5) beating the grass rope.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses handheld brush cutter.

Referring to fig. 1, the handheld brush cutter comprises a hollow pipe fitting 1, the section of the hollow pipe fitting 1 is circular, a handrail 2 is fixedly connected to the outer peripheral surface of the hollow pipe fitting 1, one end of the hollow pipe fitting 1 is fixedly connected with a power part 3, and the power part 3 can be a motor, an engine or a motor; a transmission shaft 4 is arranged in the hollow pipe fitting 1, the transmission shaft 4 is arranged along the length direction of the hollow pipe fitting 1, and one end of the transmission shaft 4, which faces the power part 3, is coaxially and fixedly connected to an output shaft of the power part 3; the other end of the hollow pipe fitting 1, which is far away from the power part 3, is fixedly connected with a gear box 5, one end of the transmission shaft 4, which is far away from the power part 3, is coaxially and fixedly connected with the input end of the gear box 5, and a helical gear set is arranged inside the gear box 5, so that the input end and the output end in the gear box 5 form an obtuse angle; the output end of the gear box 5 is coaxially and fixedly connected with a grass mowing head 6, and a grass mowing rope 7 is installed on the grass mowing head 6.

Referring to fig. 2, the grass-mowing head 6 comprises a bottom shell 61 and a top cover 62, wherein the upper end of the bottom shell 61 is provided with an opening, the top cover 62 is detachably connected to the opening of the bottom shell 61, and the top cover 62 is detachably connected to the output end of the gear box 5.

Referring to fig. 2 and 3, the bottom case 61 includes a circular enclosing plate 611, a bottom wall 612 integrally formed at the bottom of the enclosing plate 611, and a fixing shaft 613 protruding from the center of the bottom wall 612; a through hole 614 is formed in the side wall of the enclosing plate 611, and the abutting component 64 is arranged at the through hole 614 of the enclosing plate 611; the fixed shaft 613 is sleeved on the wire spool 63 on the fixed shaft 613, the coiled grass mowing rope 7 is wound on the wire spool 63, the movable end of the grass mowing rope 7 penetrates out of the through hole 614 of the enclosing plate 611, and the grass mowing rope 7 is clamped and fixed by the abutting assembly 64; five connecting columns 615 are vertically and fixedly connected to the upper surface of the bottom wall 612, the five connecting columns 615 are distributed around the circle center of the bottom wall 612 at equal intervals and are close to the edge of the bottom wall 612, a connecting screw 616 for fixing the top cover 62 on the bottom shell 61 vertically penetrates through each connecting column 615, and the connecting screw 616 is in threaded connection with the connecting column 615.

Referring to fig. 2, the top cover 62 includes a cover plate 621 and a sleeve 622, the cover plate 621 is disposed at the opening of the bottom case 61, and the connection bolt 623 penetrates the cover plate 621; one end rigid coupling of sleeve 622 is in the one side that apron 621 deviates from drain pan 61, and the output of gear box 5 is inserted and is established in sleeve 622, radially wears to be equipped with connecting bolt 623 along it on the sleeve 622, and connecting bolt 623 runs through the output of gear box 5 simultaneously, through the cooperation of connecting bolt 623 and nut 624, can dismantle top cap 62 and the output shaft of gear box 5 and link together.

Referring to fig. 2 and 3, the abutting assembly 64 includes an abutting member 641 disposed at the through hole 614, the abutting member 641 is slidably connected to the enclosing plate 611 in the vertical direction, a driving spring 642 is disposed on the upper side wall of the through hole 614, the driving spring 642 is disposed vertically, one end of the driving spring 642 is fixedly connected to the enclosing plate 611, the other end of the driving spring 642 is fixedly connected to the abutting member 641, and the driving spring 642 drives the abutting member 641 to slide downward; when the mowing rope 7 penetrates out of the through hole 614, the mowing rope 7 is located below the abutting piece 641, and the mowing rope 7 is pressed on the lower side wall of the through hole 614 through the abutting piece 641, so that the mowing rope 7 is fixed.

Referring to fig. 2 and 3, the fastening member 641 includes an inner slide 6411 tightly attached to the inner curved surface of the enclosing plate 611 and an outer slide 6412 tightly attached to the outer curved surface of the enclosing plate 611, the inner slide 6411 and the outer slide 6412 are both located at the opening of the enclosing plate 611, a connecting plate 6413 is fixedly connected between the lower end of the inner slide 6411 and the lower end of the outer slide 6412, and the connecting plate 6413 passes through the through hole 614; a slideway is formed between the inner sliding plate 6411 and the outer sliding plate 6412, and the left side wall and the right side wall of the through hole 614 are both positioned in the slideway, so that the sliding of the abutting piece 641 at the through hole 614 is realized; the driving spring 642 is positioned between the inner slide 6411 and the outer slide 6412, and the driving spring 642 is fixedly connected with a connecting plate 6413, and the connecting plate 6413 is used for contacting the grass mowing rope 7 and directly extruding the grass mowing rope 7; the resisting element 641 further comprises an anti-slip pattern 6414 fixedly connected to a surface of the outer sliding plate 6412 facing away from the inner sliding plate 6411, so that the operator can easily drive the resisting element 641 to move upwards to release the resisting fixation of the resisting element 641 to the grass mowing rope 7.

Referring to fig. 3 and 4, when the bottom shell 61 is driven to rotate at a high speed, the wire spool 63 is easily vibrated to rotate, so that the grass mowing cord 7 (refer to fig. 2) wound on the wire spool 63 is separated from the wire spool 63, and the grass mowing cord 7 is relatively disorderly located in the bottom shell 6, so that the fixing shaft 613 is cylindrical, the outer circumferential surface of the fixing shaft 613 is provided with the abutting plates 65, the abutting plates 65 are used for abutting against the inner circumferential surface of the wire spool 63, and the abutting plates 65 are provided with four abutting plates 65 which are distributed at equal intervals circumferentially around the axis of the fixing shaft 613; a push rod 66 is fixedly connected to one surface of each abutting plate 65 facing the fixed shaft 613, the push rod 66 is arranged on the side wall of the fixed shaft 613 in a penetrating manner, so that the push rod 66 is connected to the fixed shaft 613 in a sliding manner, and one end of the push rod 66, which is far away from the abutting plate 65, is located in the fixed shaft 613; the bottom wall 612 is provided with a threaded hole 67, the threaded hole 67 is communicated with the inside of the fixed shaft 613, the same driving member 68 is inserted into the threaded hole 67 and the fixed shaft 613, and the driving member 68 is used for driving the push rod 66 to move towards the outside of the fixed shaft 613, so that the abutting plate 65 abuts against the inner circumferential surface of the wire spool 63, and the rotation of the wire spool 63 is limited by the friction force between the abutting plate 65 and the wire spool 63.

Referring to fig. 4, the driving member 68 includes an insertion rod 681 inserted into the fixing shaft 613, a threaded rod 682 fitted into the threaded hole 67 and fixedly connected to an end of the insertion rod 681, and a conical head 683 fixedly connected to an end of the insertion rod 681 opposite to the threaded rod 682, wherein when a worker inserts the driving member 68 into the fixing shaft 613, an end of the push rod 66 first contacts with a conical surface of the conical head 683, and the push rod 66 moves outward toward the fixing shaft 613 by a thrust force generated by the conical head 683 against the push rod 66, so that the abutting plate 65 is tightly attached to an inner circumferential surface of the winding disc 63, and finally, the insertion rod 681 is stably located in the fixing shaft 613 by the engagement of the threaded rod 682 and the threaded hole 67.

In order to make the abutting plate 65 more stably limit the rotation of the wire spool 63, a rubber layer 651 is fixedly connected to one surface of the abutting plate 65, which is far away from the push rod 66, and the rubber layer 651 elastically deforms by being closely attached to the inner circumferential surface of the wire spool 63, so that the abutting force of the abutting plate 65 on the wire spool 63 is increased, and the rotation of the wire spool 63 is better limited.

In order to facilitate the push rod 66 to move toward the outside of the fixed shaft 613, a semicircular contact head 661 is fixed to one end of the push rod 66 away from the abutting plate 65, and a spherical surface of the contact head 661 contacts the driving member 68, thereby reducing a friction force between the driving member 68 and the push rod 66.

The implementation principle of the handheld brush cutter in the embodiment of the application is as follows: when a worker needs to replace a new grass mowing rope 7, the threaded rod 682 is screwed first to remove the insertion rod 681 from the fixing shaft 613, the abutting member 641 is moved to disengage the abutting member 641 from the grass mowing rope 7, the grass mowing rope 7 is pulled to rotate the wire spool 63 around the axis of the fixing shaft 613, the wire spool 63 is placed in a paying-off state, the grass mowing rope 7 wound on the wire spool 63 is moved out of the grass mowing head 6, the abutting member 641 is urged to abut against the grass mowing rope 7 again by the elastic force of the driving spring 642, the driving member 68 is reinserted into the fixing shaft 613, the push rod 66 is urged to move towards the outside of the fixing shaft 613, the bottom plate abuts against the wire spool 63, and the worn part of the grass mowing rope 7 is cut short, so that the installation of the new grass mowing rope 7 is completed, and the replacement of the grass mowing rope 7 by the worker is facilitated.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a handheld brush cutter, includes grass-mowing head (6) and installs rope (7) of beating grass on grass-mowing head (6), its characterized in that: the grass mowing head (6) comprises a bottom shell (61) with an opening at the upper end, a top cover (62) detachably connected to the opening of the bottom shell (61) and a wire spool (63) rotatably connected to the inside of the bottom shell (61), grass mowing ropes (7) are wound on the wire spool (63), a through hole (614) for the grass mowing ropes (7) to pass through is formed in the side wall of the bottom shell (61), and a tight abutting assembly (64) for abutting and fixing the grass mowing ropes (7) is arranged at the through hole (614) of the bottom shell (61).

2. A hand-held brush cutter according to claim 1, wherein: the bottom shell (61) comprises a surrounding plate (611), a bottom wall (612) is fixedly connected to the lower end of the surrounding plate (611), a fixed shaft (613) is fixedly connected to the bottom wall (612), the wire spool (63) is sleeved on the fixed shaft (613), and the through hole (614) is formed in the side wall of the surrounding plate (611).

3. A hand-held brush cutter according to claim 2, characterized in that: the abutting assembly (64) comprises an abutting member (641) connected to the through hole (614) of the enclosing plate (611) in a sliding mode and a driving spring (642) arranged in the through hole (614) and used for pushing the abutting member (641) to move, wherein one end of the driving spring (642) is fixedly connected to the enclosing plate (611), and the other end of the driving spring (642) is fixedly connected to the abutting member (641).

4. A hand-held brush cutter according to claim 3, characterized in that: the propping piece (641) comprises an inner sliding plate (6411) and an outer sliding plate (6412) which respectively prop against the inner side and the outer side of the enclosing plate (611) and a connecting plate (6413) fixedly connected between the inner sliding plate (6411) and the outer sliding plate (6412), the connecting plate (6413) is arranged in the through hole (614) in a penetrating mode and used for propping against the grass rope (7), and the driving spring (642) is fixedly connected with the connecting plate (6413).

5. A hand-held brush cutter according to claim 2, characterized in that: the bottom shell (61) further comprises a plurality of connecting columns (615) fixedly connected to the bottom wall (612), and a connecting screw (616) used for fixing the top cover (62) on the bottom shell (61) is inserted into each connecting column (615).

6. A hand-held brush cutter according to claim 2, characterized in that: the fixed shaft (613) is cylindrical, a push rod (66) penetrates through the side wall of the fixed shaft (613), one end of the push rod (66) is located in the fixed shaft (613), the other end of the push rod is fixedly connected with a supporting plate (65) used for supporting the wire spool (63), a threaded hole (67) communicated with the inside of the fixed shaft (613) is formed in the bottom wall (612), and a same driving piece (68) for driving the push plate to move towards the outside of the fixed shaft (613) is inserted into the threaded hole (67) and the fixed shaft (613).

7. A hand-held brush cutter according to claim 6, characterized in that: the driving piece (68) comprises an insertion rod (681) inserted in the fixed shaft (613), one end of the insertion rod (681) is fixedly connected with a threaded rod (682) matched with the threaded hole (67), and the other end of the insertion rod is fixedly connected with a conical head (683).

8. A hand-held brush cutter according to claim 6, characterized in that: and a rubber layer (651) is fixedly connected to one surface of the abutting plate (65) departing from the push rod (66).

9. A hand-held brush cutter according to claim 7, wherein: one end of the push rod (66) departing from the abutting plate (65) is fixedly connected with a semicircular contact head (661).