CN219108212U

CN219108212U - Novel backpack mower

Info

Publication number: CN219108212U
Application number: CN202223393546.7U
Authority: CN
Inventors: 涂文兵; 黄怡彬; 王浩; 罗丫; 娄元阔; 黄浩铭
Original assignee: East China Jiaotong University
Current assignee: East China Jiaotong University
Priority date: 2022-12-18
Filing date: 2022-12-18
Publication date: 2023-06-02
Anticipated expiration: 2032-12-18

Abstract

The utility model discloses a novel backpack mower, which comprises a backpack device, a transmission device, an operation device, a rotary cutting device and a baffle plate, wherein the backpack device comprises an engine assembly and a back frame, the transmission device comprises a hose, a sleeve and an operation rod, the operation device comprises a grab handle, a control switch and a handle, the rotary cutting device comprises a rotary machine head, a cutter seat, a pressing plate, a cutter disc and a reverse wire cover, the cutter disc is in a reverse buckling bowl shape, and the periphery of the cutter disc is provided with a circle of baffle ring. The utility model firstly changes the power output direction of the engine component through the hose, then continuously transmits power through the operating rod connected with the hose, then drives the rotating machine shaft to rotate through the pair of bevel gears meshed with each other, and finally drives the cutter head to rotate to cut weeds. The utility model has simple operation and reasonable design, can obviously improve mowing efficiency and safety, and has wide adaptability.

Description

Novel backpack mower

Technical Field

The utility model relates to the technical field of mowing equipment, in particular to a novel backpack mower.

Background

As an important tool in agricultural production, the mower is convenient to carry and simple to operate, and has important significance for agricultural production. However, for gardens where trees are planted, the shapes of the trees are complex, and complex terrains such as drainage channels and the like can exist in the gardens, so that a large weeding obstacle is caused for an operator, and mowing operation in the complex environment is a great difficulty for the operator. Traditional lawn mowers are complex in operation, poor in weeding effect, and not suitable for complex terrains such as gardens, and the open cutter has certain potential safety hazards.

Disclosure of Invention

The utility model provides the backpack mower which is simple and flexible to operate and is widely applicable.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a novel backpack lawn mower, includes backpack device, transmission, controlling means, cuts device and baffle soon, characterized by: the backpack device comprises an engine assembly and a back frame, the transmission device comprises a hose, a sleeve and an operating rod, the operating device comprises a grab handle, a control switch and a handle, a flexible shaft and a flexible shaft joint are arranged in the hose, the operating rod comprises a rigid transmission shaft, a support bearing I and a drive bevel gear, the rotary cutting device comprises a rotary machine head, a cutter holder, a pressing plate, a cutter head and a reverse wire cover, and the rotary machine head comprises a rotary machine shaft, a support bearing II and a driven bevel gear.

In the utility model, further, the knapsack device comprises an engine assembly and a back frame, wherein the engine assembly is arranged on the back frame, and the left side and the right side of the back frame are respectively provided with a knapsack belt, and the length of the knapsack belt is adjustable.

In the utility model, further, the engine component is connected with one end of a hose, the other end of the hose is connected with one end of an operating rod through a sleeve, a grab handle, a control switch and a handle are arranged on the operating rod, a baffle is arranged at the tail end of the operating rod, the other end of the operating rod is connected with a rotating machine head, and the rotating machine head and the tool apron are welded into a whole.

In the utility model, further, the flexible shaft and the flexible shaft joint are upsetted together, the flexible shaft joint is connected with the rigid transmission shaft through a key, the rigid transmission shaft is fixed by three support bearings I, and the tail end of the rigid transmission shaft is connected with the drive bevel gear through a key.

In the utility model, further, the rotating shaft is fixed by two support bearings II, the rotating shaft is connected with a driven bevel gear through a key, the driven bevel gear is meshed with a driving bevel gear at the tail end of a rigid transmission shaft in an inter-tooth clearance fit mode, a spline and a thread are machined at the tail end of the rotating shaft, the rotating shaft is connected with a pressing plate through the spline, the rotating shaft is connected with a reverse thread cover through the thread, and the reverse thread cover tightly presses a cutter disc on the pressing plate.

In the utility model, the cutter head is in a reverse-buckling bowl-shaped design, three blades are designed on the cutter head, the blades are in a curved design, and the blades and the baffle ring are welded into a whole.

Compared with the prior art, the utility model has the advantages that: the utility model is driven by the flexible shaft, so that the operation is more flexible; the pressing plate, the cutter disc and the anti-silk cover are in friction transmission, when the cutter disc is overloaded, slipping can occur among the cutter disc, the pressing plate and the anti-silk cover, and damage to the cutter disc, the bevel gear, the shaft and the like is prevented; the inverted bowl-shaped cutterhead lifts the height of the rotating machine shaft from the ground, so that the stubble cutting height after mowing is further reduced, and the mowing operation efficiency is higher; the blade with the curved arc design can effectively reduce the splashing of weeds; the peripheral baffle ring of blade can carry out the precutting to weeds, and can sweep out stone protection blade and operator, has improved the security of operation and has cleared up the ability of complicated topography weeds.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the transmission device of the present utility model;

FIG. 3 is a schematic view of a rotary cutting device according to the present utility model;

FIG. 4 is a schematic view showing the internal structure of the rotary cutting device of the present utility model;

FIG. 5 is a schematic view of a platen according to the present utility model;

FIG. 6 is a top view of the cutterhead of the present utility model;

fig. 7 is a half cross-sectional view of a cutterhead of the present utility model.

1-back carrying device, 11-engine assembly, 12-back frame, 121-back belt, 2-transmission device, 21-hose, 211-flexible shaft, 212-flexible shaft joint, 22-sleeve, 23-operating rod, 231-rigid transmission shaft, 232-support bearing I, 233-drive bevel gear, 3-operating device, 31-grab handle, 32-control switch, 33-handle, 4-rotary cutting device, 41-rotary machine head, 411-rotary machine shaft, 412-support bearing II, 413-driven bevel gear, 42-knife holder, 43-pressing plate, 44-knife disc, 441-knife blade, 442-baffle ring, 45-back wire cover and 5-baffle plate.

Detailed Description

Embodiments of the present utility model are further described below with reference to the accompanying drawings.

Referring to fig. 1 and 3, a novel backpack mower comprises a backpack device 1, a transmission device 2, a control device 3, a rotary cutting device 4 and a baffle plate 5, wherein the backpack device 1 outputs power, the transmission device 2 transmits the power output by the backpack device 1 to the rotary cutting device 4, an operator controls the mower through the control device 3 and controls the power switch and the power, and finally the rotary cutting device 4 cuts weeds. The backpack device 1 comprises an engine assembly 11 and a back frame 12, the engine assembly 11 is fixed on the back frame 12 and outputs power, a brace 121 is arranged on the left and right sides of the back frame 12, the length of the brace 121 is adjustable, the transmission device 2 comprises a hose 21, a sleeve 22 and an operating rod 23, the engine assembly 11 is connected with one end of the hose 21, the hose 21 can change the power direction output by the engine assembly 11 and allows bending to a certain extent, the operation is more flexible, the other end of the hose 21 is connected with one end of the operating rod 23 through the sleeve 22, the operating rod 23 is provided with an operating device 3, the operating device 3 comprises a grab handle 31, a control switch 32 and a handle 33, the grab handle 31 enables an operator to hold more comfortably, the control switch 32 can control the switch and the size of the power of the mower, the position of the handle 33 can be adjusted along the rod direction, the operator can conveniently select a proper position to hold and operate, the rotary cutting device 4 comprises a

rotary head

41, 42, a pressing plate 43, a cutter 44 and a reverse wire cover 45, the rotary head 41 is connected with the tail end of the operating rod 23, the rotary head 41 is welded with the cutter holder 42 into a whole, the reverse wire cover 45 presses the tail end of the cutter 44 tightly against the cutter 43, the cutter disc 43 and the cutter disc 44 to rotate against the cutter disc 4, the cutter disc 4 is driven by the cutter disc and the cutter disc 4 to drive the cutter disc to rotate against the cutter disc to rotate against the cutter disc 5, and the weed, the weed and the weed is protected by the weed, and the weed is protected by the weed and the cutter 5.

Referring to fig. 1 and 2, a flexible shaft 211 and a flexible shaft joint 212 are arranged in a flexible tube 21, the flexible shaft 211 is a shaft with small rigidity and elasticity and free bending transmission, so that the operation is more flexible, the flexible shaft 211 and the flexible shaft joint 212 are upsetted together, a rigid transmission shaft 231, a support bearing I232 and a bevel gear 233 are arranged in an operation rod 23, the flexible shaft joint 212 is connected with the rigid transmission shaft 231 through a key, the rigid transmission shaft 231 is fixed by three support bearings I232, the support bearing I232 can reduce friction, the power output by an engine assembly 11 is transmitted to the rigid transmission shaft 231 through the flexible shaft 211 and the flexible shaft joint 212, and the rigid transmission shaft 231 is connected with a drive bevel gear 233 through a key to drive the drive bevel gear 233 to rotate.

Referring to fig. 3, fig. 4, fig. 5, the rotating head 41 is welded with the tool apron 42 into a whole, the tool apron 42 can prevent weeds from being involved in the rotating head 41, the rotating head 41 comprises a rotating shaft 411, a supporting bearing ii 412 and a driven bevel gear 413, the rotating shaft 411 is fixed by the two supporting bearings ii 412 and reduces friction, the rotating shaft 411 is connected with the driven bevel gear 413 through a key, the driven bevel gear 413 is meshed with a driving bevel gear 233 at the tail end of a rigid transmission shaft 231 through an inter-tooth clearance fit mode, and is changed in the transmission direction of a power, the tail end of the rotating shaft 411 is provided with a spline and threads, the rotating shaft 411 is connected with a pressing plate 43 through the spline to drive the pressing plate 43 to rotate, the rotating shaft 411 is connected with a counter wire cover 45 through the thread, the counter wire cover 45 tightly presses a cutter 44 on the pressing plate 43, the friction coefficient between the pressing plate 43, the cutter 44 and the counter wire cover 45 is larger, the pressing plate 43 drives the cutter disc 44 to rotate to cut weeds, the cutter disc 44 rotates anticlockwise, the threads at the tail end of the rotating shaft 411 are left-handed threads, the self-locking performance is good, the pressing plate 43, the cutter disc 44 and the counter wire cover 45 are not easy to loose, when the cutter disc 44 is in the overload, the pressing plate 43, the cutter disc 44 and the counter wire cover 45 and the driving device 2 and the tool head 41 are slipped, and the head 41 are protected.

Referring to fig. 6 and 7, the cutter 33 is of a reverse-buckling bowl-shaped design, the height of the rotating shaft 411 from the ground is improved, the height of the stubble after mowing is further reduced, the mowing efficiency is higher, three blades 441 are designed on the cutter 44, the blades 441 are of a curved arc-shaped design, splashing of weeds can be effectively reduced, a circle of baffle rings 442 are arranged on the periphery of the blades 441, the baffle rings 442 can pre-cut the weeds, the stones are swept, the blades 441 are protected, operator clothes are prevented from being involved, safety is improved, and the working capacity for cleaning the weeds in complex terrains is improved.

The utility model is used as follows:

the operator firstly adjusts the proper position of the handle 33, adjusts the proper length of the back strap 121, then correctly carries the back carrying device 1, holds the handle 33 by one hand, holds the grab handle 32 on the operating rod 23 by the other hand, uses the thumb to operate the control switch 31, selects the proper gear, and pushes the two hands to cut weeds.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. The utility model provides a novel backpack lawn mower, includes backpack device (1), transmission (2), controlling means (3), cuts device (4) and baffle (5), characterized by soon: the backpack device (1) comprises an engine assembly (11) and a back frame (12), the transmission device (2) comprises a hose (21), a sleeve (22) and an operating rod (23), the operating device (3) comprises a grab handle (31), a control switch (32) and a handle (33), a flexible shaft (211) and a flexible shaft joint (212) are arranged in the hose (21), a rigid transmission shaft (231), a support bearing I (232) and a drive bevel gear (233) are arranged in the operating rod (23), the rotary cutting device (4) comprises a rotary machine head (41), a cutter holder (42), a pressing plate (43), a cutter disc (44) and a reverse wire cover (45), and a rotary machine shaft (411), a support bearing II (412) and a driven bevel gear (413) are arranged in the rotary machine head (41).

2. The novel backpack mower of claim 1, wherein: the engine assembly (11) is arranged on a back frame (12), and a brace (121) is arranged on the left side and the right side of the back frame (12).

3. The novel backpack mower of claim 2, wherein: the engine assembly (11) is connected with one end of a hose (21), the other end of the hose (21) is connected with one end of an operating rod (23) through a sleeve (22), a grab handle (31), a control switch (32) and a handle (33) are arranged on the operating rod (23), a baffle (5) is arranged at the bottom end of the operating rod (23), the other end of the operating rod (23) is connected with a rotating machine head (41), and the rotating machine head (41) and a tool apron (42) are welded into a whole.

4. A novel backpack mower according to claim 3, wherein: the flexible shaft (211) is upsetted with the flexible shaft joint (212), the flexible shaft joint (212) is connected with the rigid transmission shaft (231) through a key, the rigid transmission shaft (231) is fixed by three support bearings I (232), and the tail end of the rigid transmission shaft (231) is connected with the drive bevel gear (233) through a key.

5. The novel backpack mower of claim 4, wherein: the rotary machine is characterized in that the rotary machine shaft (411) is fixed by two support bearings II (412), the rotary machine shaft (411) is connected with a driven bevel gear (413) through a key, the driven bevel gear (413) is meshed with a driving bevel gear (233) at the tail end of a rigid transmission shaft (231) in an inter-tooth clearance fit mode, a spline and threads are machined at the tail end of the rotary machine shaft (411), the rotary machine shaft (411) is connected with a pressing plate (43) through the spline, the rotary machine shaft (411) is connected with a reverse thread cover (45) through the threads, and the reverse thread cover (45) tightly presses a cutter disc (44) on the pressing plate (43).

6. The novel backpack mower of claim 5, wherein: the cutter head (44) is in an inverted bowl shape, three blades (441) are arranged on the cutter head (44), the blades (441) are in an arc shape, and the blades (441) and the baffle ring (442) are welded into a whole.