Cutter shaft assembly for paddy field stubble burying and pulping machine

Abstract

The utility model belongs to the technical field of agricultural instruments, and discloses a cutter shaft assembly for a paddy field stubble burying and pulping machine, which comprises a cutter shaft component, the cutter shaft component comprises a small shaft barrel and a main shaft barrel, the main shaft barrel is sleeved on the outer surface of the small shaft barrel, a plurality of cutter holders are arranged on the outer surface of the main shaft barrel in a staggered manner, and blades are detachably mounted on the cutter holders; the blade is simple in overall structure, the blade can be conveniently maintained and replaced when the pulping machine is used, the service life is prolonged, the maintenance rate is reduced, and the using effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of agricultural implements, and in particular relates to a cutter shaft assembly for a paddy field stubble lifting machine. BACKGROUND

[0002] In traditional paddy field stubble lifting operations, the rotary tiller cutter shaft assembly, as a core component, directly affects the soil tillage effect and subsequent agricultural operation quality in terms of structure design and operation performance. The cutter shaft assembly in the prior art generally adopts a cutter roll body and a welded cutter seat structure, and the rotary tiller cutter is fixed in the cutter seat by bolts to form a rigid connection system that cannot be disassembled.

[0003] After long-term use, the cutter blade and the cutter seat are fixed by welding or interference fit. When the cutter blade fails due to wear, chipping, or impact on hard objects (such as bricks and stones, high stubble), the cutter shaft assembly must be replaced or repaired in the factory, and the cutter blade structure cannot be replaced. This requires users to reserve a complete cutter shaft assembly as spare parts, increasing equipment purchase costs, and the failure of the cutter blade and the cutter seat results in a metal material utilization rate of less than 30%.

[0004] A Chinese patent with application number CN202321963347.7 discloses a paddy field stubble lifting machine cutter shaft, which includes a cutter shaft pipe. A disc is fixedly arranged on the left side wall of the cutter shaft pipe. A spline sleeve is fixedly arranged on the left side wall of the disc. Uniformly arranged left and right fan-shaped cutter blades are arranged on the outer wall of the cutter shaft pipe. A shaft head is fixedly arranged on the right side wall of the cutter shaft pipe. A dust cover is arranged on the left end of the outer part of the shaft head. A bearing seat is arranged on the right end of the outer part of the shaft head. A bearing is arranged in the bearing seat. The bearing is sleeved on the outer part of the shaft head. Symmetrical oil seals are arranged on the left end of the bearing in the bearing seat. The thickened cutter shaft pipe and the fan-shaped cutter blades can effectively prevent the entanglement of straw and weeds, improve the stubble lifting effect, and create a good seedbed effect for planting seedlings.

[0005] However, the left and right fan-shaped cutter blades in the above application are integrally connected with the cutter shaft pipe. When the cutter blades are damaged, the entire cutter shaft assembly must be replaced, increasing maintenance costs and labor intensity of workers. UTILITY MODEL CONTENTS

[0006] The main technical problem to be solved by the utility model is to provide a cutter shaft assembly for a paddy field stubble lifting machine, which has a simple overall structure, facilitates maintenance and replacement of the cutter blades during use of the lifting machine, enhances the overall strength of the cutter blades, prolongs the service life, reduces the maintenance rate, and improves the use effect.

[0007] To solve the above technical problems, the utility model provides the following technical scheme:

[0008] A knife shaft assembly for a paddy field stubble lifting machine, comprising a knife shaft assembly, the knife shaft assembly comprising a small shaft cylinder and a main shaft cylinder, the main shaft cylinder being sleeved on the outer surface of the small shaft cylinder, the outer surface of the main shaft cylinder being staggered with a plurality of knife seats, and a blade being detachably installed on the knife seat.

[0009] The knife seat comprises an installation plate fixedly installed on the outer surface of the main shaft cylinder, one end of the installation plate being fixedly connected with an arc-shaped plate, the other end of the arc-shaped plate being fixedly connected with a baffle, and a baffle groove being arranged between the baffle and the arc-shaped plate.

[0010] The following is a further optimization of the technical solution of the present application:

[0011] Both ends of the small shaft cylinder are fixedly installed with first flange plates, and fixed plates are sleeved on the outer surface of the small shaft cylinder at positions close to the first flange plates, and the fixed plates are fixedly connected with the small shaft cylinder by welding.

[0012] Further optimization: the fixed plate is circular, and the outer diameter of the fixed plate matches the inner diameter of the main shaft cylinder.

[0013] Further optimization: second flange plates are fixedly installed at both ends of the main shaft cylinder.

[0014] Further optimization: the knife seats are vertically arranged on the outer surface of the main shaft cylinder.

[0015] Further optimization: a first installation hole is formed in the installation plate.

[0016] Further optimization: one side of the blade is provided with a short arc portion, the other side of the blade is provided with a long arc portion, the long arc portion and the short arc portion are connected to make the overall shape of the blade fan-shaped, and the thickness of the long arc portion matches the groove width of the baffle groove.

[0017] Further optimization: a second installation hole is formed in the short arc portion at a position corresponding to the first installation hole.

[0018] Further optimization: one side of the blade between the long arc portion and the short arc portion is provided with a concave portion, and the other side is provided with a convex portion, and the shapes of the concave portion and the convex portion match the shape of the arc-shaped plate.

[0019] Further optimization: the bottom surface of the blade is provided with an arc surface, and the size of the arc surface matches the outer surface of the main shaft cylinder.

[0020] The utility model discloses adopt above -mentioned technical scheme, clever design, reasonable in structure, in the application process in the padder, the cutter shaft subassembly of thick installation blade, enhance its overall strength, satisfy high -strength operation demand, in addition, the blade is detachably installed on the tool holder, and the tool holder is provided with the blocking groove, and the blade is placed in the blocking groove on one side, and the other side is fixedly connected with the tool holder through the bolt, realizes quick installation and dismounting, improves the maintenance efficiency, and simultaneously, when the blade appears damage, only needs to quickly dismount the damaged blade and replaces, reduces the maintenance cost, and conveniently uses.

[0021] The utility model is further illustrated below in connection with the drawings and examples. DRAWINGS

[0022] Figure 1 It is the schematic diagram of the overall structure in the embodiment of the utility model;

[0023] Figure 2 It is the schematic diagram of the blade mounting structure in the embodiment of the utility model;

[0024] Figure 3 It is the schematic diagram of another perspective of the blade mounting structure in the embodiment of the utility model;

[0025] Figure 4 It is the structural schematic diagram of the tool holder in the embodiment of the utility model.

[0026] In the drawing: 1, small axle cylinder;11, first flange plate;2, fixed plate;3, main shaft cylinder;31, second flange plate;4, tool holder;41, mounting plate;410, first mounting hole;42, arc plate;43, baffle;44, blocking groove;5, blade;51, short arc part;52, second mounting hole;53, convex part;54, concave part;55, long arc part;56, arc surface. PREFERRED EMBODIMENT

[0027] As Figures 1-4 Shown: a paddy field buried stubble padder's cutter shaft assembly, including cutter shaft subassembly, cutter shaft subassembly includes small axle cylinder 1 and main shaft cylinder 3, the main shaft cylinder 3 is sleeved on the outer surface of small axle cylinder 1, and the outer surface of main shaft cylinder 3 is staggered and arranged with a plurality of tool holders 4, and the tool holder 4 is detachably installed with blade 5;

[0028] The tool holder 4 includes the mounting plate 41 fixedly installed on the outer surface of the main shaft cylinder 3, one end of the mounting plate 41 is fixedly connected with the arc plate 42, the other end of the arc plate 42 is fixedly connected with the baffle 43, and the blocking groove 44 is arranged between the baffle 43 and the arc plate 42.

[0029] The first flange plate 11 is fixedly installed at both ends of the small axle cylinder 1, and the small axle cylinder 1 is drivingly connected with other parts of the padder through the first flange plate 11, and the specific connection mode is known in the prior art, which will not be repeated here.

[0030] The small shaft cylinder 1 is sleeved with a fixing plate 2 at both ends of the outer surface close to the first flange plate 11, and the fixing plate 2 is fixedly connected with the small shaft cylinder 1 by welding.

[0031] The fixing plate 2 is circular, and the outer diameter of the fixing plate 2 matches the inner diameter of the main shaft cylinder 3, and the main shaft cylinder 3 is sleeved on the outer surface of the fixing plate 2.

[0032] The main shaft cylinder 3 is fixedly installed on the outer surface of the fixing plate 2 by welding.

[0033] In this way, the overall strength of the cutter shaft assembly can be improved.

[0034] The main shaft cylinder 3 is fixedly provided with a second flange plate 31 at both ends, and the main shaft cylinder 3 is drivingly connected with other parts of the padder through the second flange plate 31. The specific connection mode is known in the prior art, and will not be described here.

[0035] The cutter seat 4 is vertically arranged on the outer surface of the main shaft cylinder 3.

[0036] As shown in Figure 4 The mounting plate 41 is provided with a first mounting hole 410.

[0037] As shown in Figures 2-3 The blade 5 is provided with a short arc portion 51 on one side, and the short arc portion 51 is provided with a second mounting hole 52 at a position corresponding to the first mounting hole 410.

[0038] The other side of the blade 5 is provided with a long arc portion 55, and the long arc portion 55 and the short arc portion 51 are connected to form a fan-shaped blade 5, thereby improving the overall strength of the blade 5.

[0039] The thickness of the long arc portion 55 matches the groove width of the blocking groove 44.

[0040] The blade 5 is provided with a concave portion 54 on one side between the long arc portion 55 and the short arc portion 51, and a convex portion 53 on the other side. In this way, the overall thickness of the blade 5 is increased, thereby improving the overall strength of the blade 5.

[0041] The shapes of the concave portion 54 and the convex portion 53 match the shape of the arc-shaped plate 42.

[0042] The bottom surface of the blade 5 is provided with an arc surface 56, and the size of the arc surface 56 matches the outer surface of the main shaft cylinder 3.

[0043] In use, the long arc portion 55 of the blade 5 is inserted into the blocking groove 44, the concave portion 54 and the convex portion 53 of the blade 5 are attached to the arc-shaped plate 42, the first mounting hole 410 corresponds to the second mounting hole 52, the arc surface 56 of the bottom surface of the blade 5 is closely attached to the outer surface of the main shaft cylinder 3, the first mounting hole 410 and the second mounting hole 52 are inserted into the same bolt, and then a nut is used for locking and fixing, so that the blade 5 is fixed and installed on the tool holder 4.

[0044] When the blade 5 is damaged and affects the efficiency during use, the nut is loosened, the bolt is removed, the blade 5 can be removed from the tool holder 4 for replacement, quick disassembly and replacement are realized, and the working efficiency is increased.

[0045] For those skilled in the art, according to the teaching of the utility model, the change, modification, replacement and deformation of the embodiment without departing from the principle and spirit of the utility model still fall within the protection scope of the utility model.

Claims

1. A knife shaft assembly for use in a paddy field stubble raising and mulching machine, comprising a knife shaft assembly, characterized in that: The knife shaft assembly comprises a small shaft cylinder (1) and a main shaft cylinder (3), the main shaft cylinder (3) is sleeved on the outer surface of the small shaft cylinder (1), and a plurality of knife holders (4) are staggered on the outer surface of the main shaft cylinder (3), and the knife holders (4) are detachably provided with knife blades (5); The knife holder (4) comprises an installation plate (41) fixedly installed on the outer surface of the main shaft cylinder (3), one end of the installation plate (41) is fixedly connected with an arc-shaped plate (42), the other end of the arc-shaped plate (42) is fixedly connected with a baffle (43), and a blocking groove (44) is arranged between the baffle (43) and the arc-shaped plate (42).

2. A knife shaft assembly for a paddy field mulch and slurry raising machine according to claim 1, characterized in that: Both ends of the small shaft cylinder (1) are fixedly provided with first flange plates (11), and the outer surface of the small shaft cylinder (1) is sleeved with fixed plates (2) near the first flange plates (11), and the fixed plates (2) are fixedly connected with the small shaft cylinder (1) by welding.

3. A knife shaft assembly for a paddy field mulch and slurry raising machine according to claim 2, characterized in that: The fixed plate (2) is circular, and the outer diameter of the fixed plate (2) matches the inner diameter of the main shaft cylinder (3).

4. A knife shaft assembly for a paddy field mulch and slurry raising machine according to claim 3, characterized in that: Both ends of the main shaft cylinder (3) are fixedly provided with second flange plates (31).

5. A knife shaft assembly for a paddy field mulch and slurry raising machine according to claim 4, characterized in that: The knife holder (4) is vertically arranged on the outer surface of the main shaft cylinder (3).

6. A knife shaft assembly for a paddy field mulch and slurry raising machine according to claim 5, characterized in that: The installation plate (41) is provided with a first installation hole (410).

7. A knife shaft assembly for a paddy field mulch and slurry raising machine according to claim 6, characterized in that: One side of the knife blade (5) is provided with a short arc part (51), and the other side of the knife blade (5) is provided with a long arc part (55), the long arc part (55) and the short arc part (51) are connected to form a fan-shaped knife blade (5), and the thickness of the long arc part (55) matches the groove width of the blocking groove (44).

8. A knife shaft assembly for a paddy field burrowing and slurry raising machine according to claim 7, characterized in that: The short arc part (51) is provided with a second installation hole (52) corresponding to the first installation hole (410).

9. A knife shaft assembly for a paddy field mulch and slurry raising machine according to claim 8, characterized in that: The knife blade (5) is provided with a concave part (54) between the long arc part (55) and the short arc part (51), and the other side is provided with a convex part (53), and the shapes of the concave part (54) and the convex part (53) match the shape of the arc-shaped plate (42).

10. A knife shaft assembly for a paddy field mulch riser according to claim 9, characterized in that: The bottom surface of the knife blade (5) is provided with an arc surface (56), and the size of the arc surface (56) matches the outer surface of the main shaft cylinder (3).

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