CN217608373U

CN217608373U - Rotary arm type double-side grass mower

Info

Publication number: CN217608373U
Application number: CN202220658365.3U
Authority: CN
Inventors: 刘鹏飞; 朱敏; 李晔
Original assignee: Changzhou Han Sun Machinery Co ltd
Current assignee: Changzhou Han Sun Machinery Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-10-21
Anticipated expiration: 2032-03-25

Abstract

The utility model relates to the technical field of lawnmowers, in particular to a rotary arm type bilateral lawnmower, which comprises a frame, a large arm hinged at the middle part of the front end of the frame, a small arm hinged with the tail end of the large arm, a hydraulic motor seat hinged with the tail end of the small arm, a hydraulic motor arranged on the hydraulic motor seat, and a lawnmower cutter group driven by the hydraulic motor; one side of the front end of the rack is hinged with a large arm oil cylinder, and the tail end of a piston rod of the large arm oil cylinder is hinged to the middle part of the large arm; the small arm comprises a small arm connecting plate and a small arm main body fixedly connected with the tail end of the small arm connecting plate; the middle part of the big arm is hinged with a small arm oil cylinder, and the tail end of a piston rod of the small arm oil cylinder is hinged with the head end of a small arm connecting plate. The large arm of the grass mower is controlled to rotate by the oil cylinder to change the center of gravity, and the small arm is turned over by matching with the oil cylinder on the small arm, so that the reversing of the grass mower is realized, the left side and the right side of the advancing direction can be operated by the grass mower, the operation efficiency is improved, and the operation cost is reduced.

Description

Rotary arm type double-side grass mower

Technical Field

The utility model relates to a lawnmower technical field especially relates to a two side lawnmowers of swivel arm type.

Background

The grass mower is equipment commonly used for garden maintenance, and is commonly used for trimming grass stems, branches and vines.

The lawnmower who exists in the existing market provides power by the tractor, passes on power in the lawnmower gear box by the tractor through universal drive shaft, and the gear box output shaft provides power for the gear pump to through motor control valve drive hydraulic motor, realize the reciprocal grass cutting of grass cutting head. The grass mower is hung on the tractor through three points, only grass stems, branches and vines on one side of the grass mower can be trimmed in the advancing direction of the tractor, and the grass mower can only trim the grass stems, the branches and the vines by turning the advancing direction of the tractor when the other side of the grass mower is trimmed, so that the operation is inconvenient, the operation cost is higher, and the operation efficiency is lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a rotary arm type bilateral lawnmower.

In order to realize the purpose, the utility model adopts the following technical scheme:

a rotary arm type bilateral lawnmower comprises a frame, a large arm hinged to the middle of the front end of the frame, a small arm hinged to the tail end of the large arm, a hydraulic motor seat hinged to the tail end of the small arm, a hydraulic motor arranged on the hydraulic motor seat, and a lawnmower cutter group driven by the hydraulic motor; a large arm oil cylinder is hinged to one side of the front end of the rack, and the tail end of a piston rod of the large arm oil cylinder is hinged to the middle of the large arm; the small arm comprises a small arm connecting plate and a small arm main body fixedly connected with the tail end of the small arm connecting plate; the middle part of the large arm is hinged with a small arm oil cylinder, and the tail end of a piston rod of the small arm oil cylinder is hinged with the head end of a small arm connecting plate; the middle part of the small arm is rotationally connected with a swing arm oil cylinder which drives a hydraulic motor seat to rotate; the rack-mounted has hydraulic tank, install four hydro-cylinder control valves that match with big arm hydro-cylinder, forearm hydro-cylinder, swing arm hydro-cylinder, hydraulic motor respectively on the hydraulic tank, big arm hydro-cylinder, forearm hydro-cylinder, swing arm hydro-cylinder, hydraulic motor are connected rather than the hydro-cylinder control valve that corresponds through the remote control oil circuit respectively.

Preferably, a small arm cover is fixed in the middle of the small arm and sleeved outside the small arm, and a cylinder body of the swing arm oil cylinder is hinged to the small arm cover.

Preferably, a connecting plate is fixedly arranged on the hydraulic motor seat, the head end of the connecting plate is hinged with the small arm, a connecting rod is hinged to the middle of the connecting plate, a hinged plate is hinged to the tail end of a piston rod of the swing arm oil cylinder, and the piston rod of the swing arm oil cylinder, the hinged plate and the connecting rod are hinged to one point.

Preferably, a crank connecting rod is hinged to the hydraulic motor seat, a spring seat is fixedly mounted on the grass cutting knife group, a buffer spring is fixedly mounted on the spring seat and sleeved on the crank connecting rod, and a nut is arranged at the tail end of the crank connecting rod.

The utility model has the advantages that:

the oil cylinder is adopted to control the rotation of the big arm of the grass mower to change the gravity center, and the oil cylinder on the small arm is matched to realize the turnover of the small arm, so that the reversing of the grass mower is realized, the grass mower can trim grass stems, branches and vines on the left side and the right side of the advancing direction, the operation efficiency is improved, and the operation cost is reduced.

Drawings

Fig. 1 is a schematic diagram of a right side operation structure of a rotary arm type double-side lawnmower according to the present invention;

fig. 2 is a schematic side view of a rotary arm type double-sided lawnmower according to the present invention;

fig. 3 is a schematic three-dimensional structure diagram of a rotary arm type double-sided lawnmower according to the present invention;

fig. 4 is a schematic view of a left side operation structure of a rotary arm type double-side lawnmower according to the present invention;

fig. 5 is a schematic view of a small arm rotation dead point structure of a rotary arm type double-side lawnmower according to the present invention.

In the figure: 1-frame, 2-big arm, 3-small arm, 4-small arm cover, 5-hinged plate, 6-grass cutter group, 7-big arm oil cylinder, 8-small arm oil cylinder, 9-swing arm oil cylinder, 10-hydraulic motor seat, 11-crank connecting rod, 12-buffer spring, 13-hydraulic oil tank and 14-remote control oil circuit.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a rotary arm type double-sided lawnmower comprises a frame 1, a large arm 2 hinged to the middle of the front end of the frame 1, a small arm 3 hinged to the tail end of the large arm 2, a hydraulic motor seat 10 hinged to the tail end of the small arm 3, a hydraulic motor installed on the hydraulic motor seat 10, and a lawnmower blade group 6 driven by the hydraulic motor;

one side of the front end of the frame 1 is hinged with a large arm oil cylinder 7, and the tail end of a piston rod of the large arm oil cylinder 7 is hinged in the middle of the large arm 2.

The small arm 3 comprises a small arm connecting plate and a small arm main body fixedly connected with the tail end of the small arm connecting plate; the middle part of the big arm 2 is hinged with a small arm oil cylinder 8, the tail end of a piston rod of the small arm oil cylinder 8 is hinged with the head end of a small arm connecting plate, the middle part of the small arm 3 is fixedly provided with a small arm cover 4 which is sleeved outside the small arm 3, and a swing arm oil cylinder 9 which drives a hydraulic motor seat 10 to rotate is hinged on the small arm cover 4.

The hydraulic motor seat 10 is fixedly provided with a connecting plate, the head end of the connecting plate is hinged with the small arm 3, the middle part of the connecting plate is hinged with a connecting rod, the tail end of a piston rod of the swing arm oil cylinder 9 is hinged with a hinged plate 5, and the piston rod of the swing arm oil cylinder 9, the hinged plate 5 and the connecting rod are hinged at one point.

A crank connecting rod 11 is hinged to the hydraulic motor seat 10, a spring seat is fixedly mounted on the grass cutting knife group 6, a buffer spring 12 is fixedly mounted on the spring seat, the buffer spring 12 is sleeved on the crank connecting rod 11, and a nut is arranged at the tail end of the crank connecting rod 11 and plays a role in buffering when the grass cutting head reciprocates.

The frame 1 is provided with a hydraulic oil tank 13, the hydraulic oil tank 13 is provided with four oil cylinder control valves which are respectively matched with the large arm oil cylinder 7, the small arm oil cylinder 8, the swing arm oil cylinder 9 and the hydraulic motor, the large arm oil cylinder 7, the small arm oil cylinder 8, the swing arm oil cylinder 9 and the hydraulic motor are respectively connected with the corresponding oil cylinder control valves through a remote control oil path 14, and the oil cylinder control valves are controlled through mechanical lock pulling, so that the on-off and the flow direction of the oil path are controlled.

The frame 1 hangs on the tractor through three points, hydraulic motor drive grass cutting knife tackle 6 carries out the operation to the operation area on advancing direction right side, swing arm hydro-cylinder 9 drive hydraulic motor seat 10 turns to, thereby drive grass cutting knife tackle 6 turns to, when grass cutting knife tackle 6's piston rod stretches out, act on articulated slab 5 and connecting rod and make its contained angle increase, the contained angle increase of forearm 3 and grass cutting knife tackle 6, grass cutting knife tackle 6 keeps away from forearm 3, otherwise when the piston rod of swing arm hydro-cylinder 9 contracts, act on articulated slab 5 and connecting rod and make its contained angle reduce, the contained angle of forearm 3 and grass cutting knife tackle 6 reduces, grass cutting knife tackle 6 is close to forearm 3.

When the operation area is the left side of the advancing direction, the operation direction needs to be changed, the piston rod of the small arm oil cylinder 8 retracts, referring to fig. 5, when the minimum stroke (namely, dead point) of the piston rod is reached, the large arm oil cylinder 7 acts, the large arm 2 is inclined towards the left side of the advancing direction, the gravity center of the small arm 3 and the grass cutter group 6 deviates towards the left side, the piston rod of the small arm oil cylinder 8 extends again, the small arm 3 rotates under the action of gravity, and the grass cutter group 6 rotates to the left side of the advancing direction.

When the operation direction needs to be changed again, in the same way, the piston rod of the small arm oil cylinder 8 retracts, when the minimum stroke (namely dead point) of the piston rod is reached, the large arm oil cylinder 7 acts, the large arm 2 is inclined towards the right side of the advancing direction, the gravity center of the small arm 3 and the grass cutting knife group 6 deviates towards the right side, at the moment, the piston rod of the small arm oil cylinder 8 extends out again, the small arm 3 rotates under the action of gravity, and the grass cutting knife group 6 rotates to the right side of the advancing direction.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A rotary arm type double-side grass mower is characterized by comprising a rack (1), a large arm (2) hinged to the middle of the front end of the rack (1), a small arm (3) hinged to the tail end of the large arm (2), a hydraulic motor seat (10) hinged to the tail end of the small arm (3), a hydraulic motor arranged on the hydraulic motor seat (10), and a grass cutting knife group (6) driven by the hydraulic motor;

a large arm oil cylinder (7) is hinged to one side of the front end of the rack (1), and the tail end of a piston rod of the large arm oil cylinder (7) is hinged to the middle of the large arm (2);

the small arm (3) comprises a small arm connecting plate and a small arm main body fixedly connected with the tail end of the small arm connecting plate; a small arm oil cylinder (8) is hinged to the middle of the large arm (2), and the tail end of a piston rod of the small arm oil cylinder (8) is hinged to the head end of a small arm connecting plate;

the middle part of the small arm (3) is rotationally connected with a swing arm oil cylinder (9) which drives a hydraulic motor seat (10) to rotate;

hydraulic tank (13) are installed in frame (1), install four hydro-cylinder control valves that match respectively with big arm hydro-cylinder (7), forearm hydro-cylinder (8), swing arm hydro-cylinder (9), hydraulic motor on hydraulic tank (13), big arm hydro-cylinder (7), forearm hydro-cylinder (8), swing arm hydro-cylinder (9), hydraulic motor are connected rather than the hydro-cylinder control valve that corresponds through remote control oil circuit (14) respectively.

2. The double-sided lawnmower of the rotary arm type according to claim 1, wherein the middle part of the small arm (3) is fixed with a small arm cover (4) which is sleeved outside the small arm, and the cylinder body of the swing arm cylinder (9) is hinged on the small arm cover (4).

3. The rotary arm type double-side lawnmower according to claim 1, wherein the hydraulic motor base (10) is fixedly provided with a connecting plate, the head end of the connecting plate is hinged to the small arm (3), the middle part of the connecting plate is hinged to a connecting rod, the tail end of a piston rod of the swing arm cylinder (9) is hinged to a hinged plate (5), and the piston rod of the swing arm cylinder (9), the hinged plate (5) and the connecting rod are hinged to one point.

4. The rotary arm type double-sided lawnmower according to claim 1, wherein the hydraulic motor base (10) is hinged with a crank link (11), the grass cutting blade set (6) is fixedly provided with a spring base, the spring base is fixedly provided with a buffer spring (12), the buffer spring (12) is sleeved on the crank link (11), and the tail end of the crank link (11) is provided with a nut.