CN210671266U

CN210671266U - Bottom cutting knife seat of ditcher cutter head

Info

Publication number: CN210671266U
Application number: CN201921215807.1U
Authority: CN
Inventors: 葛玉明; 葛伟岸; 葛桂萍; 周雪梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-06-05
Anticipated expiration: 2029-07-30

Abstract

The utility model discloses a bottom cutter seat of ditching machine blade disc, the leading features is that the position of the handle of a knife of bottom cutter seat assembly ditching machine blade is the sleeve pipe shape structure that both ends link up, and during the handle of a knife of ditching machine blade inserted the sheathed tube cavity, run through the through-hole fastening that handle of a knife and sleeve pipe are corresponding with the bolt, have the through-hole that corresponds with the steel sheet dish on the base plate of sleeve pipe one side, fasten the hookup with bolt and steel sheet dish. The utility model has good strength of the knife holder and very reliable fastening with the blade, and solves the long-standing problems that the blade is easy to loosen and the knife holder is easy to damage; the sleeve pipe that both ends link up on the blade holder is when changing the blade, is convenient for clear up earth debris, and the dismouting blade is also very convenient.

Description

Bottom cutting knife seat of ditcher cutter head

Technical Field

The utility model belongs to the field of agricultural machinery, concretely relates to with supporting bottom cutter seat of ditching machine blade disc of tractor.

Background

In the prior art of the ditcher, a plurality of bottom cutter seats are arranged at the edge of a steel plate disc of the ditcher and used for assembling bottom cutters to cut soil at the bottom of a ditch; the position of the bottom cutting knife holder assembled with the knife handle is groove-shaped, convex edges are arranged on two sides of the bottom cutting knife holder, through holes are arranged in the concave part of the middle of the bottom cutting knife holder, the knife handle of the blade is placed in the groove-shaped knife holder, the through holes are arranged in the middle of the knife handle, the blade and the grooves are fastened and connected through bolts, and the convex edges on two sides of the knife holder play a role in limiting the knife handle in preventing torsion.

In the prior art, a bottom cutter of a ditcher generally adopts a rotary blade universal for a rotary cultivator, and the structure of the bottom cutter consists of a cutter handle with a short straight line length at the upper end, a longer bent arc-shaped cutter body at the middle section and a transverse cutting edge with the lower end bent to one side and forming a right angle with the cutter body, and the bottom cutter is generally manufactured into left and right symmetrical shapes for use in pairs. The cross section of the knife handle of the rotary tillage knife is rectangular, a through hole is arranged in the middle of the knife handle, and the arched edge of the curved knife body is provided with a cutting edge and extends to the tail end of the transverse cutting edge for cutting soil from the ditch to the ditch bottom.

The undercutting tool holder with the groove-shaped structure is widely used on a cutter head of a ditcher for many years, and has the following defects:

the bottom cutter seat is of a groove-shaped structure, the back surface of the bottom cutter seat is tightly close to the plane of the steel plate disc and is used as a rotary blade; because the bottom cutter seat and the rotary blade are cast and forged parts, the bottom cutter seat and the rotary blade are not processed by finish machining and have poor flatness, even after the bottom cutter seat is assembled between the parts of the rotary blade and the cutter handle and is tightly pressed by bolts, a certain gap still exists between the bottom cutter seat and the rotary blade, the impact force between the rotary blade and soil is very large when the cutter head of the ditcher rotates at high speed, and cut soil can be continuously extruded into the gap, because the structure of the bottom cutter seat is groove-shaped or approximately groove steel type, the convex edges at both sides of the bottom cutter seat are single suspension edges, the strength is poor, and meanwhile, the groove-shaped bottom cutter seat can not powerfully wrap the periphery of the cutter handle, the convex edges at both sides of the bottom cutter seat are easily deformed by the soil continuously extruded into the gap, the limiting effect on the rotary blade handle is weakened, the rotary blade gradually generates displacement or even loosens in the groove of the cutter seat, even the rotary blade is thrown out to cause potential safety hazard.

Disclosure of Invention

The utility model aims at providing a high-speed rotatory cutting soil's of blade disc impact force can effectively be born to the bottom cutter seat of the ditching machine blade disc of new construction in the ditching operation, and bottom cutter seat intensity is good, non-deformable, and the bottom cutter seat is reliable with the handle of a knife fastening of rotary blade, can not become flexible and drop, thoroughly eliminates the potential safety hazard.

In order to achieve the above object, the utility model adopts the following technical scheme:

the bottom cutting knife seat of the cutter head of the ditcher is characterized in that the bottom cutting knife seat is composed of a sleeve and a base plate, the two ends of the sleeve are communicated, the pipe wall of one side of a cavity of the sleeve is connected with the base plate in parallel into a whole, and more than two through holes are formed in the base plate and are assembled, fastened and connected with the plane of a steel plate disc through bolts.

The middle part of the sleeve of the bottom cutting tool holder is provided with a through hole corresponding to the through hole of the tool handle, and a bolt is arranged in the through hole and used for fastening the tool handle inserted into the cavity of the sleeve.

Furthermore, one side of the sleeve of the bottom cutter seat is provided with a long groove-shaped notch.

Furthermore, a sleeve for assembling the cutter handle on the undercutting cutter seat adopts a structure for limiting the periphery or four corners of the cutter handle.

The utility model has the advantages of as follows:

among the ditching operation process, the high-speed rotatory cutting soil of blade disc, because the bottom cutter seat has adopted the bushing structure, intensity is good, not only can bear the powerful impact force of rotary blade, and sheathed tube cavity is the closed form of parcel with handle of a knife cooperation all around, the earth extrusion of cutting out during the ditching gets into in the gap of handle of a knife and bottom cutter seat sleeve pipe cavity, can be crowded dead with the handle of a knife and the bottom cutter seat of rotary blade gradually, make the handle of a knife of rotary blade unable not hard up, fastening with the bottom cutter seat is very reliable, the rotary blade who has solved long-term existence is easily not hard up, the difficult problem that the bottom cutter seat is fragile.

The sleeve pipe of bottom cutter seat assembly rotary blade handle of a knife adopts the structure that both ends link up, when changing the fracture blade, conveniently takes out the handle of a knife of remaining in the sleeve pipe, also is convenient for clear up earth debris.

The inventor adopts the undercutting tool post of the cutter head of the ditcher with the new structure to carry out a large amount of ditching tests in the field under the condition of confidentiality, and compared with the same-field operation of the existing ditcher with the cutter head assembled with the groove-shaped undercutting tool post, the inventor finds that the rotary tillage tool on the groove-shaped undercutting tool post is continuously loosened and even the blade is dropped and thrown out in the using process of the old product, and the bolt is required to be frequently checked and fastened, which is very troublesome; and adopt the utility model discloses a bottom cutter seat of bushing type structure, the rotary blade of assembly in the sleeve pipe except that the disconnected sword phenomenon of individuality, any not hard up condition never appears, though more than twenty thousand meters have been examined in field ditching retest, but all rotary blades all firmly fix in the bottom cutter seat, and have in the clearance between the handle of a knife of partial earth dark embedding rotary blade and the bottom cutter seat, it is very stable, user's trouble has significantly reduced, the time of inspection maintenance has been practiced thrift, the work efficiency is improved, simultaneously very safe and reliable, the old and difficult problem that exists many years has been solved.

Drawings

Fig. 1 is a schematic structural view of the bottom cutter seat of the present invention.

Fig. 2 is a schematic structural view of the universal rotary blade of the present invention.

FIG. 3 is a schematic view of the assembly structure of the bottom cutter holder and the rotary blade of the present invention.

Fig. 4 is a schematic plan front view of the bottom cutter holder of the present invention.

Fig. 5 is a schematic left side plan view of the bottom cutting tool holder of fig. 4 according to the present invention.

Fig. 6 is a schematic top plan view of the bottom cutting tool holder of fig. 4 according to the present invention.

Fig. 7 is a schematic structural view of an embodiment of the bottom cutting knife holder sleeve with an elongated slot notch.

Fig. 8 is a schematic view of the general structure of the bottom cutter holder of the present invention assembled on a steel plate tray.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, the bottom cutter seat 1 is composed of a sleeve 11 and a base plate 12, the sleeve 11 is a cavity structure with two through ends, a through hole 13 is arranged in the middle of the sleeve 11, three through holes 14 are arranged on the base plate 12, and the through holes 14 on the base plate 12 are assembled and fastened with a steel plate disc by bolts.

As shown in fig. 2, the rotary blade 3 is composed of a handle 31 with a short straight length at the upper end, a curved blade with a long middle section, and a transverse blade with a right angle with the blade, and is generally manufactured into a left-right symmetrical shape for use in pairs. The cross section of the handle 31 of the rotary blade is rectangular, a through hole 32 is arranged in the middle of the handle 31, and the arched edge of the curved blade body is provided with a cutting edge and extends to the tail end of the transverse cutting edge for cutting soil from the ditch to the ditch bottom.

As shown in fig. 3, the rotary blade 3 and the bottom cutter holder 1 are assembled together, the through hole 13 in the middle of the sleeve 11 of the bottom cutter holder 1 corresponds to the through hole 32 of the shank 31 of the rotary blade 3, the shank 31 is inserted into the cavity of the sleeve 11, and the shank 31 is fastened by the bolt 15.

As shown in fig. 4, 5 and 6, the plane front view, the left view and the top view of the bottom cutting tool holder of the present invention are respectively schematic diagrams.

As shown in fig. 7, the bottom cutting tool holder 1 can be assembled with the shank 31 of the rotary blade 3 by using other structures which limit the periphery or four corners of the shank 31, although the tool holder sleeve 11 of the structure has a slot-shaped notch in the middle, the four corners of the periphery limit the shank 31 of the rotary blade 3 to wrap the shank 31, and the width of the slot in the middle just can be used for placing the width of the opposite side of the bolt head of the fastening bolt, so that the bolt does not rotate when the bolt is fastened.

As shown in fig. 8, the base plate 12 of the bottom cutter holder 1 is fitted on the same circumferential radius of the edge of the steel plate tray 2, the rotary blade 3 is inserted into the sleeve 11 of the bottom cutter holder 1, and the shank of the rotary blade 3 is fastened to the bottom cutter holder 1 by a bolt.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications made without departing from the principles of the present invention should be considered as the protection scope of the present invention.

Claims

1. The utility model provides a bottom cutting blade holder of ditching machine blade disc which characterized in that: the bottom cutter seat is composed of a sleeve and a base plate, wherein the two ends of the sleeve are communicated, the pipe wall on one side of a cavity of the sleeve is connected with the base plate in parallel to form a whole, and the base plate is provided with more than two through holes which are assembled and fastened with the wall surface of the steel plate disc by bolts.

2. The undercutting tool holder for a cutter head of a furrowing machine according to claim 1, wherein: the middle part of the sleeve of the bottom cutting tool holder is provided with a through hole corresponding to the through hole of the tool shank, and a bolt is arranged in the through hole and used for fastening the tool shank inserted into the cavity of the sleeve.

3. The undercutting tool holder for a cutter head of a furrowing machine according to claim 1, wherein: one side of the sleeve of the bottom cutter seat is provided with a long groove-shaped notch.

4. The undercutting tool holder for a cutter head of a furrowing machine according to claim 1, wherein: the sleeve for assembling the knife handle on the bottom cutting knife seat adopts a structure for limiting the periphery or four corners of the knife handle.