Flail knife chopping device of harvester

Abstract

The utility model relates to the technical field of harvesters, and discloses a flail knife chopping device of a harvester, which comprises a transmission shaft and a plurality of groups of flail knife units in direct transmission connection with the transmission shaft, each flail knife unit comprises a flail knife blade and a flail knife box, and the flail knife chopping device is characterized in that the plurality of groups of flail knife units are respectively and fixedly connected onto a frame body; the frame body is rotationally and detachably connected to the transmission shaft through a connecting piece. The replacement time and labor cost are reduced, the stability and reliability of the machine are ensured, the working efficiency and quality are improved, and the harvesting progress is accelerated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of harvester, concretely relates to a flail chopper device of harvester. BACKGROUND

[0002] The flail chopper device of harvester is an important component in modern agricultural mechanization, mainly used for chopping the straw of crops such as corn, so as to facilitate subsequent agricultural processing or utilization. During the operation of the harvester, the driving device drives the cutter shaft and the blade to rotate at high speed. When the corn straw is fed into the header, the flail chopper chops the straw with its sharp blade and high-speed rotating kinetic energy. The chopped straw can be fed into the silo, baling machine or other processing equipment through the subsequent conveying device.

[0003] Chinese patent document CN220606578U discloses a front-mounted stalk chopping device for a corn harvester. Each group of stalk chopping units is installed below each group of ear picking units of the header. Each group of stalk chopping units includes a flail box, a flail box transmission shaft and a group of flail blades. The flail box is composed of a box shell and first and second bevel gears arranged in the box shell. The flail box is fixed on the ear picking frame and located below the stalk pulling roller on one side corresponding to the ear picking unit. The first bevel gear is fixed to the front end of the flail box transmission shaft, and the third bevel gear is fixed to the rear end of the flail box transmission shaft. The third bevel gear is engaged with the fourth bevel gear fixed on the main shaft of the ear picking box. The second bevel gear is fixed to the upper end of the cutter shaft, and the cutter shaft is rotatably installed on the bottom wall of the box shell. The lower end of the cutter shaft is fixed with the flail blade.

[0004] Chinese patent document CN118511724B discloses a modular flail stalk returning machine and harvesting machine. The machine includes a power box and a flail box, which are independent of each other. The power box is rotatably connected with a power output shaft through a first bearing. The flail box is rotatably connected with a flail main shaft through a second bearing. The power output shaft and the flail main shaft are drivingly connected through a spline power connection sleeve. The flail box is also rotatably connected with a flail shaft through a third bearing. The flail shaft is perpendicular to the flail main shaft and drivingly connected with the flail main shaft. The end of the flail shaft extending out of the flail box is connected with a flail.

[0005] The prior art has the following disadvantages: multiple flail units composed of flail blades and flail boxes are installed on the header of the corn harvester. When the flail chopper device is used in different working environments and for different types of crops, the flail units need to be frequently replaced and maintained. However, each flail unit is independent and difficult to disassemble and assemble, which greatly increases the labor cost and affects the harvesting progress. UTILITY MODEL CONTENTS

[0006] The utility model discloses in order to solve the technical problem of convenient replacement flail unit provides a kind of flail chopping device of harvester, including transmission shaft and with the direct transmission connection of transmission shaft multiple groups flail unit, the flail unit includes flail blade and flail box, it is characterized in that, multiple the flail unit is fixedly connected on frame respectively, the frame is rotatable and detachably connected on the transmission shaft by connecting piece.

[0007] Preferably, the connecting piece includes a clamping portion and a bearing, the clamping portion is provided with a connecting groove, the bearing is detachably connected to the connecting groove, and the transmission shaft passes through the connecting groove and the bearing at the same time.

[0008] In order to facilitate the disassembly of the frame, the connecting groove is a U-shaped groove.

[0009] In order to facilitate non-parallel shaft transmission, a transmission bevel gear consistent with the number of flail units is provided on the transmission shaft, the transmission bevel gear is engaged with a driven bevel gear, and the driven bevel gear is used to drive the flail blade in the flail unit to rotate, which flexibly adapts to the transmission scene of non-parallel shafts.

[0010] In order to avoid the transmission shaft displacement from causing the transmission bevel gear and the driven bevel gear to disengage, a bevel gear locking sleeve is provided on the transmission shaft at one side of the transmission bevel gear, the bevel gear locking sleeve and the driven bevel gear are located on opposite sides of the transmission bevel gear respectively, and the bevel gear locking sleeve and the driven bevel gear are clamped and locked by limiting the transmission bevel gear left and right.

[0011] In order to avoid the influence of crop deviation on harvesting efficiency, the transmission shaft is divided into a left transmission shaft and a right transmission shaft, the left transmission shaft and the right transmission shaft are connected to the frame at the same time, and a plurality of flail units are connected to each of the left transmission shaft and the right transmission shaft, the rotation direction of the flail blade on the left transmission shaft is opposite to that of the flail blade on the right transmission shaft, which facilitates the guidance of corn stalks to the middle to be cut.

[0012] Preferably, the left transmission shaft and the right transmission shaft are respectively connected with a transmission input sprocket at the end.

[0013] Preferably, the flail box is provided with a driven shaft assembly, one end of the driven shaft assembly is connected to the flail blade, and the other end of the driven shaft assembly is connected to the driven bevel gear, and the driven bevel gear passes through the frame and is connected to the transmission bevel gear.

[0014] In order to facilitate the maintenance and replacement of individual flail units, the flail box is detachably connected to the frame.

[0015] The utility model has the following beneficial effects:

[0016] 1、The utility model discloses a plurality of flail units are concentrated on the same frame, and do not influence the rotation of transmission shaft, when needing to replace flail unit, directly detach the frame from transmission shaft can carry out all replacement, reduce the replacement length and artificial cost, improve the cutting efficiency and quality, speed up the harvest progress.

[0017] 2, the flail blade in use will appear wear and tear, the wear and tear degree of different flail blades can be different, by replacing a plurality of flail blades simultaneously, can ensure that the wear and tear degree of all flail blades is similar, thereby keeping the consistency of flail performance, ensure the stability and reliability of machinery, improve the operation efficiency and quality.

[0018] 3, high safety, flail blade is installed on the high -speed rotation axle, and there is a security risk when replacing individually, and when replacing a plurality of flail blades simultaneously, can systematically check and replace all flail blades, reduce the risk of overall equipment failure caused by single flail blade problem. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the schematic view of the flail cutting device embodiment of the harvester of the utility model;

[0020] Figure 2 It is the schematic view of the flail unit. DETAILED DESCRIPTION

[0021] The following is further explained in detail by specific implementation:

[0022] 1, the reference signs in the drawings of the specification include: transmission shaft 1, left transmission shaft 101, right transmission shaft 102, flail unit 2, flail blade 201, flail box 202, frame 3, connecting piece 4, clamping part 401, bearing 402, U-shaped groove 403, transmission bevel gear 5, driven bevel gear 6, bevel gear locking sleeve 7, transmission input sprocket 8, driven shaft assembly 9.

[0023] Example 1

[0024] As shown in Figure 1 And 2 A flail cutting device of a harvester, comprising a transmission shaft 1 and four groups of flail units 2 directly transmission connected with the transmission shaft 1, four groups of the flail units 2 are fixedly connected on the frame 3 respectively, the frame 3 is rotatably and detachably connected on the transmission shaft 1 through four connecting pieces 4, the connecting piece 4 includes clamping part 401 and bearing 402, the U-shaped groove 403 is arranged on the clamping part 401, the bearing 402 is detachably connected on the U-shaped groove 403 through four bolts, the transmission shaft 1 passes through the U-shaped groove 403 and bearing 402 simultaneously, the transmission shaft 1 rotates on the clamping part 401.

[0025] The transmission shaft 1 is sleeved with four transmission bevel gears 5, the transmission bevel gears 5 engage the driven bevel gears 6 of the flail unit 2, the driven bevel gears 6 are used to drive the flail blades 201 in the flail unit 2 to rotate, and flexible adaptation to the transmission scene of non-parallel shafts is achieved.

[0026] The transmission shaft 1 on one side of the transmission bevel gear 5 is provided with a bevel gear locking sleeve 7, the bevel gear locking sleeve 7 is located on the opposite side of the driven bevel gear 6 of the transmission bevel gear 5, the bevel gear locking sleeve 7 is directly clamped on the transmission shaft 1 and is fastened by bolts, the inner ring diameter of the bevel gear locking sleeve 7 is smaller than the diameter of the transmission shaft 1, and the bevel gear locking sleeve 7 and the driven bevel gear 6 are clamped and locked by limiting the transmission bevel gear 5 left and right.

[0027] The transmission shaft 1 is divided into a left transmission shaft 101 and a right transmission shaft 102, the left transmission shaft 101 and the right transmission shaft 102 are connected on the frame body 3 at the same time, and are connected with two groups of the flail unit 2, the rotation direction of the flail blades 201 on the left transmission shaft 101 is counterclockwise, and the rotation direction of the flail blades 201 on the right transmission shaft 102 is clockwise, the rotation direction here is the direction presented by the view angle in the figure, which is convenient for guiding the corn straw to gather between the left transmission shaft 101 and the right transmission shaft 102 for cutting.

[0028] Of course, the frame body 3 is connected to the left transmission shaft 101 and the right transmission shaft 102 through two connecting pieces 4 respectively, each transmission shaft 1 can drive multiple groups of the flail unit 2, the number is confirmed according to the actual size of the harvester header, and all the flail units 2 can be replaced only by disassembling four connecting pieces 4 each time; if there is only one transmission shaft 1, all the flail units 2 can be replaced only by disassembling one or two connecting pieces 4 each time.

[0029] The left end of the left transmission shaft 101 and the right end of the right transmission shaft 102 are respectively connected with transmission input sprockets 8.

[0030] The flail unit 2 includes a flail blade 201 and a flail box 202, the flail box 202 is internally provided with a driven shaft assembly 9, one end of the driven shaft assembly 9 is connected with the flail blade 201, and the other end is connected with the driven bevel gear 6, the frame body 3 is provided with a through hole, the driven bevel gear 6 passes through the through hole and is connected with the transmission bevel gear 5, and the internal structure of the flail unit 2 is prior art, which will not be described in detail here.

[0031] The flail box 202 is detachably connected to the frame body 3 by bolts.

[0032] The above-mentioned is only the embodiment of the present application, and the common knowledge of the specific structure and characteristics in the scheme is not described in detail, the ordinary skilled person in the art knows all the ordinary technical knowledge in the technical field of the present application before the application date or the priority date, can know all the prior art in the field, and has the ability to apply the conventional experimental means before the date, the ordinary skilled person in the art can improve and implement the present scheme under the enlightenment given in the present application, and some typical known structures or known methods should not become an obstacle for the ordinary skilled person in the art to implement the present application. It should be pointed out that for the skilled person in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, which will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A blade-fling chopping device for a harvester, comprising a transmission shaft and a plurality of blade-fling units directly connected to the transmission shaft, wherein the blade-fling units comprise blades and a blade-fling box, and wherein: A plurality of groups of the blade-flinging units are respectively fixedly connected to a frame, and the frame is rotatably and detachably connected to the transmission shaft through a connecting piece.

2. The harvester's fling and chopping device according to claim 1, characterized in that: The connecting member includes a clamping portion and a bearing. The clamping portion is provided with a connecting groove. The bearing is detachably connected to the connecting groove. The transmission shaft passes through the connecting groove and the bearing at the same time.

3. The harvester's fling and chopping device according to claim 2, characterized in that: The connecting groove is a U-shaped groove.

4. The harvester's fling and chopping device according to claim 3, characterized in that: The transmission shaft is sleeved with transmission bevel gears having the same number as the blade-flinging units, and the transmission bevel gears are engaged with driven bevel gears, which are used to drive the blades in the blade-flinging units to rotate.

5. The harvester's fling and chopping device according to claim 4, characterized in that: A bevel gear locking sleeve is provided on the transmission shaft on one side of the transmission bevel gear, and the bevel gear locking sleeve and the driven bevel gear are respectively located on opposite sides of the transmission bevel gear.

6. The harvester's flail chopping device according to claim 5, characterized in that: The transmission shaft is divided into a left transmission shaft and a right transmission shaft. The left transmission shaft and the right transmission shaft are connected to the frame at the same time, and are both connected to multiple groups of the blade-flipping units. The rotation direction of the blade-flipping units on the left transmission shaft and the rotation direction of the blade-flipping units on the right transmission shaft are opposite to each other.

7. The blade-swinging and chopping device of a harvester according to claim 6, characterized in that: The ends of the left transmission shaft and the right transmission shaft are respectively connected with transmission input sprockets.

8. The blade-swinging and chopping device of a harvester according to claim 7, characterized in that: The blade-flinging box has a built-in driven shaft assembly, one end of the driven shaft assembly is connected to the blade-flinging box, and the other end is connected to the driven bevel gear. The driven bevel gear passes through the frame and is connected to the transmission bevel gear.

9. The harvester's fling and chopping device according to claim 8, characterized in that: The knife-fling box can be detached from the frame.

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