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CN-122004032-A - Mower with quick-release structure

CN122004032ACN 122004032 ACN122004032 ACN 122004032ACN-122004032-A

Abstract

A mower with a quick-dismantling structure comprises a mower body, a chassis, a driving shaft extending to the chassis, a cutter disc, a cover plate and at least two blades, wherein the end part of the driving shaft is provided with a mounting hole, the cutter disc is located below the driving shaft, the middle part of the upper side of the cutter disc is provided with counter bores for the driving shaft to be inserted, the lower side of the cutter disc is provided with at least two cutter grooves distributed at intervals along the circumferential direction, the cutter grooves are provided with downward anti-falling columns, the blades correspond to the cutter grooves one by one, the blades are provided with bearing sections clamped to the cutter grooves, the bearing sections are provided with anti-falling holes for the anti-falling columns to be inserted, the width of the bearing sections is smaller than the width of the cutter grooves so that a gap area is formed between one side of the bearing sections and the groove walls of the cutter grooves, the middle part of the cover plate is provided with a through hole corresponding to the mounting hole, the through hole is provided with a fastening bolt inserted into the mounting hole, the cover plate is provided with limiting ribs corresponding to the gap area, and the fastening bolt is used for adjusting the compression degree of the upper side of the cover plate to the bearing sections and the compression degree of the limiting ribs to one side of the bearing sections.

Inventors

  • WU JUN
  • YE XIAOBO
  • YE MING

Assignees

  • 宁波大叶园林设备股份有限公司

Dates

Publication Date
20260512
Application Date
20260409

Claims (7)

  1. 1. The mower with the quick-release structure comprises a mower body (1), a chassis (2) and a driving shaft (21) extending to the chassis (2), wherein the end part of the driving shaft (21) is provided with a mounting hole (21 a), and the mower is characterized by further comprising a cutter disc (3), a cover plate (4) and at least two blades (5), wherein the cutter disc (3) is positioned below the driving shaft (21), a counter bore (31) for inserting the driving shaft (21) is formed in the middle part of the upper side of the cutter disc (3), at least two cutter grooves (32) which are distributed at intervals along the circumferential direction are formed in the lower side of the cutter disc (3), the cutter grooves (32) are provided with downward anti-release posts (32 a), the blades (5) correspond to the cutter grooves (32) one by one, the blades (5) are provided with bearing sections (5 a) which are clamped to the cutter grooves (32), the bearing sections (5 a) are provided with anti-release holes (51) for inserting the anti-release posts (32 a), the width of the bearing sections (5 a) is smaller than the width of the cutter grooves (32) so that the widths of the cutter discs (3) are formed in the middle parts of the upper sides of the cutter disc (3) so that the cutter disc are provided with the corresponding mounting holes (4) and the mounting holes (41) and the corresponding to the mounting holes (21 a) and the middle parts (4 b) are provided with through holes (41), the cover plate (4) is provided with a limit rib (42) corresponding to the clearance area (32 b), and the fastening bolt (6) is used for adjusting the compression degree of the upper side of the cover plate (4) on the bearing section (5 a) and the compression degree of the limit rib (42) on one side of the bearing section (5 a) by changing the insertion depth of the opposite mounting hole (21 a).
  2. 2. Mower with quick release structure according to claim 1, characterized in that the underside of the cutterhead (3) is provided with an elastic buffer layer (33), the shape of the elastic buffer layer (33) is the same as that of the underside of the cutterhead (3), and the thickness of the receiving section (5 a) is larger than the groove depth of the knife groove (32) and smaller than the sum of the groove depth of the knife groove (32) and the thickness of the elastic buffer layer (33).
  3. 3. Mower with quick release structure according to claim 2, characterized in that the mounting hole (21 a) is provided with an internal thread, the fastening bolt (6) comprises a bolt (61) and an annular shield (62), the shield (62) is abutted against the underside of the cover plate (4), the nut end of the bolt (61) is abutted against the shield (62) and the screw end is screwed to the mounting hole (21 a) after passing through the shield (62) and the through hole (41).
  4. 4. A mower with a quick release structure according to claim 2 or 3, wherein the elastic buffer layer (33) is made of rubber.
  5. 5. A mower with a quick release structure according to any one of claims 1-3, wherein the limit rib (42) comprises a reference surface (42 a) abutting against the groove wall of the cutter groove (32) and a limit surface (42 b) abutting against one side of the receiving section (5 a), and the limit surface (42 b) is gradually inclined from top to bottom in a direction approaching the receiving section (5 a), so that when the cover plate (4) is tightly attached to the cutter head (3), the compression force of the limit surface (42 b) to the receiving section (5 a) is gradually increased.
  6. 6. A mower with a quick release structure according to any one of claims 1-3, characterized in that the side of the receiving section (5 a) corresponding to the edge of the blade (5) abuts against the corresponding groove wall of the knife groove (32), a gap area (32 b) is formed between the side of the receiving section (5 a) corresponding to the back of the blade (5) and the corresponding groove wall, and the position of the limit rib (42) corresponds to the corresponding gap area (32 b).
  7. 7. A mower with a quick release structure according to any one of claims 1-3, wherein the blade (5) further comprises a cutting section (5 b) extending outside the blade groove (32), the cutting section (5 b) has a width larger than the width of the blade groove (32) so that a stepped surface (52) is formed between the cutting section (5 b) and the receiving section (5 a), and when the receiving section (5 a) is engaged with the blade groove (32), one side of the blade groove (32) corresponding to the peripheral wall of the cutterhead (3) is closed by the stepped surface (52) of the corresponding blade (5).

Description

Mower with quick-release structure Technical Field The invention relates to the technical field of mowers, in particular to a mower with a quick-dismantling structure. Background A mower is a general garden maintenance device, and its core function is to cut weeds by a blade rotating at a high speed. A conventional mower generally comprises a body part with a motor and a chassis positioned at the bottom of the body, wherein a driving shaft connected to the motor is arranged in the chassis, and the motor drives a blade to rotate through the driving shaft so as to realize a mowing function. The blade of the mower mainly has two mounting modes, one is that a bolt is arranged at the center of a large-size blade, and the bolt is connected to a driving shaft, so that the blade is directly assembled and fixed to the end part of the driving shaft; the other is that a cutter disc is arranged at the end part of the driving shaft, and a plurality of small-size blades are mounted on a fastening structure of the cutter disc to realize assembly. To the second installation mode, a plurality of cutter slots are usually formed in the outer edge of a cutter head, mounting screw holes are formed in each cutter slot, anti-falling holes are formed in the mounting end of each small-size cutter blade, after the mounting end of each small-size cutter blade is clamped into the corresponding cutter slot, the small-size cutter blade passes through the anti-falling holes of the small-size cutter blade one by one through bolts and is connected to the mounting holes in a threaded mode, and therefore the small-size cutter blade can be mounted and fixed relative to the cutter head. However, the mode has the problems that on one hand, each bolt corresponding to the small-size blade needs to be screwed down, the operation is complex, particularly when a plurality of blades need to be replaced, the process of disassembling and assembling the bolts one by one is extremely time-consuming, and the maintenance efficiency and the user experience are seriously affected, on the other hand, the impurities such as the cut soil, sand and stone are easy to splash and invade into gaps between the blades and the cutter grooves, particularly in a humid environment, after the invaded impurities are contacted with metal parts for a long time, rust and even 'blocking' occur between the blades and the cutter disc. Once the rust and the lock occur, the subsequent blade disassembly is extremely difficult, and even the replacement can be completed by using a destructive means, which not only increases the maintenance cost, but also can cause irreversible damage to the cutterhead. Therefore, how to simplify the assembly and disassembly operations of the blade and effectively prevent the invasion of impurities on the premise of ensuring the fixing reliability of the blade is a technical problem to be solved in the field. Disclosure of Invention The invention aims to provide a mower with a quick-dismantling structure, which can reliably fix a blade and can be conveniently dismantled. In order to solve the problems, the invention provides a mower with a quick-dismantling structure, which comprises a mower body, a chassis, a driving shaft extending to the chassis, a cutter disc, a cover plate and at least two blades, wherein the end part of the driving shaft is provided with a mounting hole, the cutter disc is positioned below the driving shaft, the middle part of the upper side of the cutter disc is provided with a counter bore for the driving shaft to be inserted, the lower side of the cutter disc is provided with at least two cutter grooves which are circumferentially and alternately distributed, the cutter grooves are provided with downward anti-falling posts, the blades and the cutter grooves are respectively corresponding, the blades are provided with a bearing section clamped to the cutter grooves, the bearing section is provided with an anti-falling hole for the anti-falling post to be inserted, the width of the bearing section is smaller than the width of the cutter groove so that a gap area is formed between one side of the bearing section and the groove wall of the cutter groove, the middle part of the cover plate is provided with a through hole corresponding to the mounting hole, the through hole is provided with a fastening bolt inserted into the mounting hole, and the cover plate is provided with a limit rib corresponding to the gap area, and the fastening bolt is used for adjusting the compression degree of the upper side to the bearing section and the limit rib on one side of the bearing section. Compared with the prior art, the cutter groove and the anti-drop column are arranged on the lower side of the cutter head, during installation, the bearing section of the cutter blade is clamped to the cutter groove, the anti-drop column is inserted into the anti-drop hole, a gap area is formed between one side of the bearing section and the groove wall on th