CN107251679B

CN107251679B - Rotary cultivator cutter shaft assembly convenient to install

Info

Publication number: CN107251679B
Application number: CN201710326378.4A
Authority: CN
Inventors: 隆成柱
Original assignee: Yaao Nanyang Agricultural Machinery Co ltd
Current assignee: YAAO NANYANG AGRICULTURAL MACHINERY Co.,Ltd.
Priority date: 2017-05-10
Filing date: 2017-05-10
Publication date: 2020-04-21
Anticipated expiration: 2037-05-10
Also published as: CN107251679A

Abstract

The invention discloses a rotary cultivator cutter shaft assembly convenient to install, which comprises a shaft tube, wherein pipe through holes are formed in two ends of the shaft tube, inner stop blocks are uniformly welded on the circumferential inner wall of each pipe through hole, threaded holes are formed in the circumferential outer wall of each pipe through hole, and an outer ring sleeve and a fixed column are vertically welded in the center of the other side wall of a connecting welding part; inner baffle grooves are uniformly formed in the side walls of the fixing columns; the inner stop block is embedded into the inner stop groove, and the port of the bolt penetrates through the threaded hole and extends into the through hole. According to the rotary tiller cutter shaft assembly convenient to mount, the pipe orifice is just clamped in the annular groove, no weed enters a gap between the shaft head and the shaft tube, winding of the weed is avoided, and the service life is prolonged; the shaft tube is in threaded connection with the shaft head, the structure is convenient to assemble and disassemble, and the manufacturing cost is low; in order to prevent the phenomena of loosening and the like, the inner stop block is embedded into the inner stop groove, the rotary blades are installed in a staggered mode, the resistance of the blades to soil is effectively reduced, and the soil after rotary tillage is not hardened, so that the rotary tillage effect is greatly improved.

Description

Rotary cultivator cutter shaft assembly convenient to install

Technical Field

The invention relates to the technical field of agricultural machinery, in particular to a rotary tiller cutter shaft assembly convenient to install.

Background

The rotary cultivator is a cultivator which is matched with a tractor to complete the operations of ploughing and harrowing. The soil breaking machine has the characteristics of strong soil breaking capacity, flat ground surface after ploughing and the like, so that the soil breaking machine is widely applied; meanwhile, the stubble buried below the ground surface can be cut up, the operation of the seeder is convenient, and a good seedbed is provided for later-stage seeding. Correctly use and adjust the rotary cultivator, to keeping its good technical state, it is very important to ensure the farming quality, the rotary machine of transmission structural style in the middle of the current, the centre sets up the transmission case, rotary cultivator arbor both ends set up the bearing, the transmission case drives rotary cultivator arbor rotation and cultivates under the effect of both ends bearing, rotary cultivator arbor assembly includes arbor and rotary blade, the arbor includes the axis body and sets up the blade holder at axis body circumference surface, the rotary blade is installed on the blade holder of arbor, the axis body structural style and the shortcoming of current arbor: the structure form of solid round steel is directly adopted, and the structure has the following defects: the material consumption is high, and the manufacturing cost is high; the central shaft tube that adopts of axis body, central shaft tube both ends welding two spindle noses, installation bearing on the spindle nose, the shortcoming of this structure: the central siphon welds technical requirement height with the spindle nose, can't avoid appearing welding defect, has welding stress, influences the whole life of arbor, and because the central siphon links firmly together through the welded mode with the spindle nose, when needing to change central siphon or spindle nose, needs supporting change together, causes manufacturing cost height.

Disclosure of Invention

The invention aims to provide a rotary tiller cutter shaft assembly convenient to mount, which has the advantages of convenient structure assembly and disassembly, no need of matched replacement, low manufacturing cost, looseness prevention and improvement of rotary tillage effect, and solves the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a rotary cultivator cutter shaft assembly convenient to mount comprises a shaft tube, wherein pipe through holes are formed in two ends of the shaft tube, and cutter holders are uniformly welded on the circumferential outer wall of the shaft tube; the inner wall of the circumference of the pipe through hole is uniformly welded with an inner stop block, the outer wall of the circumference of the pipe through hole is provided with a threaded hole, and the inside of the pipe through hole is movably connected with a shaft head; the threaded hole penetrates through the inner stop block and is communicated with the pipe through hole; the shaft head consists of a bearing, a connecting welding piece, an outer ring sleeve and a fixed column, wherein the bearing is welded on one side wall of the connecting welding piece, and the outer ring sleeve and the fixed column are vertically welded at the center of the other side wall of the connecting welding piece; the fixed column is positioned at the inner circle center of the outer ring sleeve, and inner baffle grooves are uniformly formed in the side wall of the fixed column; the inner wall of the bottom of the inner baffle groove is provided with a through hole, and inner threads are distributed on the inner wall of the through hole; the inner stop block is embedded into the inner stop groove, the through hole is communicated with the threaded hole, and a bolt is arranged inside the threaded hole; the port of the bolt penetrates through the threaded hole and extends into the through hole, and the bolt is meshed with the internal thread through threads; the tool apron is provided with a rotary blade through a screw nut.

Preferably, the cross section of the rotary blade is an L-shaped component, and blade tips are arranged at two side ports of the rotary blade.

Preferably, the tool apron is annular, and the rotary tillage tools are installed on the circumferential surface of the side wall of the tool apron in a staggered mode.

Preferably, the shaft tube is in contact connection with the inner circumferential surface of the outer ring sleeve, and a ring groove is formed between the inner diameter of the outer ring sleeve and the outer diameter of the fixing column.

Preferably, a pipe orifice is formed between the pipe through hole and the shaft pipe and is embedded into the ring groove.

Compared with the prior art, the invention has the prominent substantive characteristics and remarkable progress that:

according to the rotary tiller cutter shaft assembly convenient to mount, the pipe orifice is just clamped in the annular groove, so that the joint of the shaft head and the shaft tube is covered by the outer ring sleeve, weeds cannot enter the gap between the shaft head and the shaft tube, the weeds are prevented from being wound, and the service life is prolonged; when the inner baffle groove on the fixed column is connected with the inner baffle block in the shaft tube, the through hole and the threaded hole are just positioned on the same line, and a bolt is arranged inside the threaded hole; the fixing column and the shaft tube are fixed by the bolt, and the shaft tube is in threaded connection with the shaft head, so that the structure is convenient to assemble and disassemble, does not need to be matched and replaced, and is low in manufacturing cost; in order to prevent the shaft tube and the shaft head from loosening and the like in the rotating process, the inner stop block is embedded into the inner stop groove to limit the relative rotation of the shaft tube and the shaft head; the rotary tillage blades are installed in a staggered mode, so that the resistance to soil entering the blades is effectively reduced, and the soil after rotary tillage is not hardened, and the rotary tillage effect is greatly improved.

Drawings

FIG. 1 is an overall block diagram of the present invention;

FIG. 2 is a partial exploded view of the present invention;

FIG. 3 is a view of the connection of the axle tube and the spindle head of the present invention;

fig. 4 is a partial cross-sectional view of the present invention.

In the figure: 1 axle tube, 11 tube through holes, 111 inner stop blocks, 112 threaded holes, 12 knife holders, 121 rotary tillage knives, 2 shaft heads, 21 bearings, 22 connecting welding pieces, 23 outer ring sleeves, 24 fixing columns, 241 inner stop grooves, 2411 through holes, 3 internal threads and 4 bolts.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a rotary tiller cutter shaft assembly convenient to mount comprises a shaft tube 1, wherein two ends of the shaft tube 1 are provided with tube through holes 11, the inside of the shaft tube 1 is of a solid structure, and cutter holders 12 are uniformly welded on the circumferential outer wall of the shaft tube 1; the inner wall of the circumference of the pipe through hole 11 is uniformly welded with an inner stop block 111, the inner stop block 111 is of an arc fan-shaped structure, the outer wall of the circumference of the pipe through hole 11 is provided with a threaded hole 112, the inside of the pipe through hole 11 is movably connected with a shaft head 2, and a part of the shaft head 2 is clamped in the pipe through hole 1; the threaded hole 112 penetrates through the inner stop block 111 to be communicated with the tube through hole 11, and the threaded hole 112 penetrates through the shaft tube 1; the shaft head 2 consists of a bearing 21, a connecting and welding part 22, an outer ring sleeve 23 and a fixed column 24, the bearing 21 is welded on one side wall of the connecting and welding part 22, the outer ring sleeve 23 and the fixed column 24 are vertically welded at the center of the other side wall of the connecting and welding part 22, the outer ring sleeve 23 and the fixed column 24 also rotate when the connecting and welding part 22 rotates, the inner circumferential surface of the shaft tube 1 and the outer ring sleeve 23 are in contact connection, a ring groove is formed between the inner diameter of the outer ring sleeve 23 and the outer diameter of the fixed column 24, when the shaft head 2 is inserted into the pipe through hole 11 of the shaft pipe 1, the outer wall of the shaft pipe 1 is connected with the inner wall of the outer ring sleeve 23, a pipe orifice is formed between the pipe through hole 11 and the shaft pipe 1, the pipe orifice is embedded into the ring groove, and the pipe orifice is just clamped in the ring groove, so that the joint of the shaft head 2 and the shaft pipe 1 is coated by the outer ring sleeve 23, weeds cannot enter the gap between the shaft head 2 and the shaft pipe 1, the weeds are prevented from being wound, and the service life is prolonged; the fixed column 24 is positioned at the center of the inner circle of the outer ring sleeve 23, and inner blocking grooves 241 are uniformly formed in the side wall of the fixed column 24; a through hole 2411 is formed in the inner wall of the bottom of the inner retaining groove 241, and internal threads 3 are fully distributed on the inner wall of the through hole 2411; the inner stopper 111 is embedded into the inner stopper groove 241, after the inner stopper 111 is embedded into the inner stopper groove 241, the spindle head 2 does not slide in the tube through hole 11, the through hole 2411 is communicated with the threaded hole 112, after the inner stopper groove 241 on the fixing column 24 is connected with the inner stopper 111 in the shaft tube 1, the through hole 2411 and the threaded hole 112 are just positioned on the same line, and the bolt 4 is arranged inside the threaded hole 112; the port of the bolt 4 passes through the threaded hole 112 and extends into the through hole 2411, the bolt 4 is meshed with the internal thread 3 through threads, the fixing column 24 and the shaft tube 1 are fixed by the bolt 4, and the shaft tube 1 is in threaded connection with the shaft head 2; in order to prevent the shaft tube 1 and the shaft head 2 from loosening and the like in the rotating process, the inner stop block 111 is embedded into the inner stop groove 241 to limit the relative rotation of the shaft tube 1 and the shaft head 2; the rotary blade 121 is installed on the blade holder 12 through a screw nut, the blade holder 12 is annular, the rotary blades 121 are installed on the circumferential surface of the side wall of the blade holder 12 in a staggered mode, the cross section of the rotary blade 121 is an L-shaped component, blade tips are arranged at ports of two sides of the rotary blade 121, the rotary blade 121 is installed in a staggered mode, the resistance of the blade to soil entering is effectively reduced, soil after rotary tillage is prevented from forming plates, and therefore the rotary tillage effect is greatly improved.

In summary, the following steps: according to the rotary tiller cutter shaft assembly convenient to mount, the pipe orifice is just clamped in the annular groove, so that the joint of the shaft head 2 and the shaft tube 1 is covered by the outer ring sleeve 23, weeds cannot enter the gap between the shaft head 2 and the shaft tube 1, the weeds are prevented from being wound, and the service life is prolonged; when the inner baffle groove 241 on the fixing column 24 is connected with the inner baffle 111 in the shaft tube 1, the through hole 2411 and the threaded hole 112 are just positioned on the same line, and the bolt 4 is arranged in the threaded hole 112; the fixing column 24 and the shaft tube 1 are fixed by the bolt 4, the shaft tube 1 is in threaded connection with the shaft head 2, the structure is convenient to assemble and disassemble, matched replacement is not needed, and the manufacturing cost is low; in order to prevent the shaft tube 1 and the shaft head 2 from loosening and the like in the rotating process, the inner stop block 111 is embedded into the inner stop groove 241 to limit the relative rotation of the shaft tube 1 and the shaft head 2; the rotary tillage blades 121 are installed in a staggered mode, so that the resistance of the blades to soil entering is effectively reduced, and the soil after rotary tillage is not hardened, so that the rotary tillage effect is greatly improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a rotary cultivator arbor assembly convenient to installation, includes central siphon (1), its characterized in that: both ends of the shaft tube (1) are provided with tube through holes (11), and tool holders (12) are uniformly welded on the circumferential outer wall of the shaft tube (1); inner stop blocks (111) with arc sector structures are uniformly welded on the circumferential inner wall of the pipe through hole (11), a threaded hole (112) is formed in the circumferential outer wall of the pipe through hole (11), and a shaft head (2) is movably connected inside the pipe through hole (11); the threaded hole (112) penetrates through the inner stop block (111) to be communicated with the pipe through hole (11); the shaft head (2) consists of a bearing (21), a connecting welding piece (22), an outer ring sleeve (23) and a fixed column (24), wherein the bearing (21) is welded on one side wall of the connecting welding piece (22), and the outer ring sleeve (23) and the fixed column (24) are vertically welded at the center of the other side wall of the connecting welding piece (22); the fixed column (24) is positioned at the center of the inner circle of the outer ring sleeve (23), and inner blocking grooves (241) are uniformly formed in the side wall of the fixed column (24); a through hole (2411) is formed in the inner wall of the bottom of the inner blocking groove (241), and internal threads (3) are distributed on the inner wall of the through hole (2411); the inner stop block (111) is embedded into the inner stop groove (241), the through hole (2411) is communicated with the threaded hole (112), and a bolt (4) is arranged inside the threaded hole (112); the port of the bolt (4) penetrates through the threaded hole (112) and extends into the through hole (2411), and the bolt (4) is meshed with the internal thread (3) through threads; the rotary tillage cutter (121) is installed on the cutter holder (12) through a screw nut, the inner circumferential surface of the shaft tube (1) and the inner circumferential surface of the outer ring sleeve (23) are in contact connection, a ring groove is formed between the inner diameter of the outer ring sleeve (23) and the outer diameter of the fixing column (24), a pipe orifice is formed between the pipe through hole (11) and the shaft tube (1), and the pipe orifice is embedded into the ring groove.

2. The readily installable rotavator arbor assembly of claim 1, wherein: the cross section of the rotary blade (121) is an L-shaped component, and blade tips are arranged at two side ports of the rotary blade (121).

3. The readily installable rotavator arbor assembly of claim 1, wherein: the tool apron (12) is annular, and the rotary blades (121) are installed on the circumferential surface of the side wall of the tool apron (12) in a staggered mode.