A hay chopping knife which is easy to install

Abstract

The application relates to the field of straw smashing equipment, and particularly discloses a convenient-to-install hay chopping smashing cutter which comprises a square shaft, vertical in-out grooves, symmetrical moving shafts, round shafts, elastic members and limiting cover plates; vertical in-out grooves are vertically arranged on the upper surface of the square shaft; the symmetrical moving shafts are symmetrically and slidably inserted into the vertical in-out grooves; the end portions of the symmetrical moving shafts are fixedly connected with the round shafts; the elastic members are arranged between the symmetrical moving shafts; the two round shafts are connected with the bearing seats through bearings, so that the fixed connection can be completed; when the blades in the cutting unit need to be replaced, the bearing seats are opened, then the two symmetrical moving shafts are held and moved oppositely, the bearing is separated from the shaft side seat, the smashing cutter can be taken out vertically upward for maintenance and disassembly; when the smashing cutter is installed after the maintenance, the installation can be completed through reverse operation, the installation and replacement are more convenient, and the problem that the smashing cutter of the existing hay cutter is inconvenient to install and disassemble is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of straw crushing equipment, and particularly relates to a convenient-to-install hay crushing knife. BACKGROUND

[0002] The hay crushing machine is an integrated machine for cutting and crushing, which can crush crop straws such as corn stalks, straws, wheat straws, sweet potato stalks, peanut shells, reed straws and sorghum stalks into powder at one time. The finished product of the hay crushing machine can control the size of the material according to the size of the sieve hole inside, and the sieve net can be replaced for adjustment, which is simple, convenient and easy to use.

[0003] A hay cutter cutter assembly and a hay cutter are disclosed in Chinese patent application No. CN110012738A, which was published on July 16, 2019. The single-cutter hay cutter cutter assembly includes a cutter, a flange plate and a moving blade. The number of cutters is one, the front and back surfaces of the cutter are flat, the cutter has a main shaft hole in the center, the flange plate is installed on the cutter, and the moving blade is installed on the front surface of the cutter. The cutter assembly of the present application has high strength, does not need to set the concave rib of the stamping part or the reinforcing rib of the casting part, is not easy to break in use, saves space, and has very small wind resistance.

[0004] However, the above-mentioned disclosed scheme has the following disadvantages: the existing crushing knife has a large number of installed blades, which are centrally installed and mostly fixed by bolts, which makes it inconvenient to replace the consumable blades, and the overall knife holder is not convenient to install and disassemble, and the knife holder cannot be quickly removed from the hay cutter. SUMMARY

[0005] The present application aims to solve the above technical problems and provide a convenient-to-install hay crushing knife.

[0006] In order to achieve the above-mentioned purpose, the following technical solutions are adopted in the present application:

[0007] The technical scheme adopted by the present application to solve its technical problems is: the convenient-to-install hay cutting and crushing cutter comprises a square shaft, a vertical inlet and outlet groove, symmetrical moving shafts, a circular shaft, an elastic member and a limiting cover plate; the upper surface of the square shaft is provided with the vertical inlet and outlet groove; the symmetrical moving shafts are symmetrically and slidably inserted into the vertical inlet and outlet groove; the end portions of the symmetrical moving shafts are fixedly connected with the circular shaft; the elastic member is arranged between the symmetrical moving shafts; the limiting cover plate is detachably and fixedly connected to the vertical inlet and outlet groove; the cutting unit is sleeved on the square shaft; during operation, the fixed connection can be completed through the cooperation of the two circular shafts and the bearing seat, so that when the blades in the cutting unit need to be replaced, the bearing seat is opened, then the two symmetrical moving shafts are held and moved relative to each other, so that the bearing is separated from the shaft side seat, at this time, the crushing cutter can be taken out vertically upward for maintenance and disassembly, after the maintenance is completed, the crushing cutter can be installed by reverse operation, so that the installation and replacement are more convenient, and the problem of inconvenient installation and disassembly of the existing hay cutter is solved.

[0008] Further, the cutting unit comprises a cutting disc and a pressing disc; the cutting disc and the pressing disc are spaced apart and sleeved on the square shaft; the cutting disc is provided with a horizontal inlet and outlet groove; the horizontal inlet and outlet groove is provided with a circumferential groove; a plurality of cutting blades are slidably inserted into the circumferential groove; the horizontal inlet and outlet groove is detachably and fixedly connected with a blocking cover plate; the pressing disc is provided with a plurality of limiting grooves; during operation, the cutting blades are matched with the circumferential groove, so that the cutting blades can be completely filled in the circumferential groove, the displacement between the cutting blades is completed by themselves, only rotation around the circumferential groove is allowed, then the cutting blades are fixed as a whole under the fixation of the blocking cover plate, the cutting blades can rotate and cut plants with the cutting disc, then when one or more cutting blades need to be replaced, the blocking cover plate is removed, so that the replacement and installation are more convenient, and the relative positions between the remaining cutting blades can be conveniently adjusted, so that the wear is relatively uniform, and the problem of inconvenient installation and disassembly of the existing cutting disc is solved.

[0009] Further, the pressing disc is provided with external teeth; the external teeth are meshingly connected with a driven gear and a driving gear; the driving gear is sleeved on the square shaft; the driven gear and the driving gear are sleeved with a positioning sleeve plate; during operation, the driving gear is sleeved on the square shaft and rotates with the square shaft, so that the pressing disc is driven to rotate by the driving gear, then under the condition that the pressing disc is limited in displacement but not limited in rotation by the shell of the hay cutter, the pressing disc is limited in other degrees of freedom except the rotation degree by matching the positioning sleeve plate and the driven gear, and the differential rotation with the cutting disc is realized, so that the pressing disc can be used for driving plants, and the high-speed rotation of the cutting disc is used for cutting, so that the cutting accuracy is effectively improved, and the problem that the existing hay cutter for cutting and pressing plants easily discharges the plants that are not cut is solved.

[0010] Further, the width and height of the square shaft are equal; during operation, the square shaft is convenient to process and install due to the equal width and height.

[0011] Further, the diameter of the circular shaft is equal to the width and height of the symmetrical moving shaft; during operation, the circular shaft is convenient to process and install due to the equal diameter, width and height.

[0012] Further, the centers of the cutting disc and the pressing disc do not coincide; during operation, the cutting disc and the pressing disc are partially overlapped due to the non-coincidence of the centers, and the plants can be pressed into the limiting groove smoothly after the pressing disc is limited by the cutting machine shell with an adaptive shape, then the cutting blades can cut the pressed plants due to the different speeds of the cutting disc and the pressing disc, so that the function of segmented cutting is realized, the plants are transferred and cut separately, the problems of blockage and uneven cutting are reduced, and the problem that the plants are not cut synchronously during the synchronous cutting and pressing is solved.

[0013] The application provides a convenient-to-install cutting and crushing knife.

[0014] 1. The two circular shafts are fixed and connected by the bearing seat, so that when the cutting unit needs to be replaced, the bearing seat is opened, the two symmetrical moving shafts are held and moved oppositely, the bearing is separated from the shaft seat, the crushing knife is taken out vertically upward for maintenance and disassembly, and after the maintenance is completed, the crushing knife is installed by reversing the operation, so that the installation and replacement are more convenient, and the problems of inconvenient installation and disassembly of the crushing knife of the existing cutting machine are solved.

[0015] 2. The cutting blades are filled in the circumferential groove, the displacement between the cutting blades is completed by the cutting blades, the cutting blades can only rotate around the circumferential groove, the cutting blades are fixed as a whole under the fixation of the blocking cover plate, the cutting blades can rotate and cut plants with the cutting disc, the cutting blades can be replaced by taking down the blocking cover plate when one or more cutting blades need to be replaced, the installation and replacement are more convenient, the relative positions between the remaining cutting blades can be adjusted conveniently, the wear is relatively uniform, and the problems of inconvenient installation and disassembly of the existing cutting blades are solved. BRIEF DESCRIPTION OF DRAWINGS

[0016] The specific embodiments of the application will be further described in detail below with reference to the accompanying drawings;

[0017] Figure 1Figure 1 is a first axonometric view of a convenient-to-mount hay chopping and pulverizing knife;

[0018] Figure 2 Figure 2 is a second axonometric view of a convenient-to-mount hay chopping and pulverizing knife;

[0019] Figure 3 Figure 3 is a third axonometric view of a convenient-to-mount hay chopping and pulverizing knife;

[0020] Figure 4 Figure 4 is a schematic view of a telescopic shaft of a convenient-to-mount hay chopping and pulverizing knife;

[0021] Figure 5 Figure 5 is a schematic view of a quarter cross-section of a telescopic shaft of a convenient-to-mount hay chopping and pulverizing knife.

[0022] Figure 1 is a first axonometric view of a convenient-to-mount hay chopping and pulverizing knife; DETAILED DESCRIPTION

[0023] It should be understood that the specific embodiments described herein are merely exemplary and do not limit the present application.

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work under the premise that the embodiments fall within the protection scope of the present application.

[0025] It should be understood that all the directional indications (such as up-down-left-right-front-back...) in the embodiments of the present application are only used to explain the relative position relationship-movement condition between the components in a certain specific posture (as shown in the accompanying drawings), and if the specific posture changes, the directional indications also change accordingly. The connection can be direct connection or indirect connection.

[0026] Please refer to Figures 1-4The illustrated, a convenient installation of the hay crushing knife, including the square shaft 1, vertical inlet and outlet slot 2, symmetrical moving shaft 3, round shaft 4, elastic element 5 and limit cover plate 6, the square shaft 1 upper surface is provided with vertical inlet and outlet slot 2, the vertical inlet and outlet slot 2 is symmetrically inserted into the symmetrical moving shaft 3, the end of the symmetrical moving shaft 3 is connected with the round shaft 4, the symmetrical moving shaft 3 is placed with elastic element 5, the vertical inlet and outlet slot 2 is detachably connected with the limit cover plate 6, the square shaft 1 is sleeved with the cutting unit, when working, the bearing seat can be fixed by the two round shafts 4, therefore, when the blade in the cutting unit needs to be replaced, only need to open the bearing seat, then hold the two symmetrical moving shafts 3 relative motion, make the bearing disengaged from the shaft side seat, at this time, the vertical upward can be taken out the crushing knife for overhaul and disassembly, after the overhaul is completed, the installation of the crushing knife can be completed by reverse operation, make the installation more convenient, solve the problem of the existing hay cutter crushing knife installation and disassembly.

[0027] The cutting unit includes cutting disc 7 and pressing disc 15, the square shaft 1 is sleeved with cutting disc 7 and pressing disc 15, the cutting disc 7 is provided with horizontal inlet and outlet slot 17, the horizontal inlet and outlet slot 17 is provided with circumferential groove 8, the circumferential groove 8 is slidably inserted into the plurality of cutting blades 9, the horizontal inlet and outlet slot 17 is detachably connected with the blocking cover plate 10, the pressing disc 15 is provided with a plurality of limiting grooves 16, when working, the cutting blade 9 can be completely filled in the circumferential groove 8 by the cutting blade 9 and the circumferential groove 8, the displacement between the cutting blades 9 is completed by itself, only rotating around the circumferential groove 8, then under the fixation of the blocking cover plate 10, the cutting blade 9 is fixed as a whole, can rotate with the cutting disc 7 to cut the plant, then when one or more cutting blades 9 need to be worn, only need to remove the blocking cover plate 10 to replace the cutting blade 9, make the replacement more convenient, and can adjust the relative position between the remaining cutting blades 9, make the wear relatively consistent, solve the problem of the existing cutting knife installation and disassembly.

[0028] The opening in the pressing disc 15 is provided with external teeth 12; the external teeth 12 are engaged with a driven gear 14 and a driving gear 11; the driving gear 11 is sleeved on the square shaft 1; the driven gear 14 and the driving gear 11 are sleeved with a positioning sleeve plate 13; during operation, the driving gear 11 is sleeved on the square shaft 1 and rotates with the square shaft 1, so that the driving gear 11 drives the pressing disc 15 to rotate, then under the condition that the pressing disc 15 is limited in displacement and not limited in rotation by the housing of the mower, the positioning sleeve plate 13 and the driven gear 14 are matched, so that the freedom of the pressing disc 15 except rotation is limited, and differential rotation with the cutting knife disc 7 is realized, so that the pressing disc 15 can be used for driving plants, and the high-speed rotation of the cutting knife disc 7 is used for cutting, so that the cutting accuracy is effectively improved, and the problem that the existing mower for cutting and pressing plants easily discharges the plants that are not cut is solved.

[0029] The width and height of the square shaft 1 are equal; during operation, the width and height of the square shaft 1 are equal, so that convenient machining and convenient installation are realized.

[0030] The diameter of the circular shaft 4 is equal to the width and height of the symmetrical moving shaft 3; during operation, the diameter of the circular shaft 4 is equal to the width and height of the symmetrical moving shaft 3, so that convenient machining is realized, and the same square tube can be used for machining, and convenient external bearing connection is realized.

[0031] The centers of the cutting knife disc 7 and the pressing disc 15 do not coincide; during operation, the centers of the cutting knife disc 7 and the pressing disc 15 do not coincide, so that a partially overlapping shape is formed, when the pressing disc 15 is limited by the mower housing with an adaptive shape, the plant can be pressed into the limiting groove 16, then the cutting blade 9 can cut the pressed plant by using different differential rotation with the cutting knife disc 7, the function of segmented cutting is realized, the plant is transferred and cut separately, the problems of blockage and uneven cutting are reduced, and the problem that the existing cutting and pressing of plants are synchronized, so that some plants are not cut and are synchronized to be transferred is solved.

[0032] The application has the advantages that: when in use, the two circular shafts 4 are fixedly connected with the bearing housings through the outer bearing, so when the blades in the cutting unit need to be replaced, the bearing housings are opened, the two symmetrical moving shafts 3 are moved relative to each other, the bearing is separated from the shaft side seat, the crushing knife is taken out vertically upward for maintenance and disassembly, and after the maintenance is completed, the crushing knife is installed by reversing the operation, so that the installation and replacement are more convenient, and the problem of inconvenient installation and disassembly of the crushing knife of the existing hay cutter is solved; the cutting blades 9 are filled in the circumferential grooves 8 through the cooperation of the cutting blades 9 and the circumferential grooves 8, the displacement between the cutting blades 9 is completed by the cutting blades 9 themselves, the cutting blades 9 can only rotate around the circumferential grooves 8, and then the cutting blades 9 are fixed as a whole under the fixation of the blocking cover plate 10 and can rotate and cut plants with the cutting disc 7, so that when one or more cutting blades 9 need to be worn, the cutting blades 9 can be replaced by removing the blocking cover plate 10, the installation and replacement are more convenient, the relative positions between the remaining cutting blades 9 can be adjusted conveniently, the wear is relatively uniform, the problem of inconvenient installation and disassembly of the existing cutting knife is solved; the driving gear 11 is sleeved on the square shaft 1 and rotates with the square shaft 1, so that the pressing disc 15 is driven to rotate by the driving gear 11, the pressing disc 15 is limited in displacement but not in rotation by the shell of the hay cutter, the positioning sleeve plate 13 and the driven gear 14 are matched, the freedom of the pressing disc 15 is limited except the rotation, and the differential speed with the cutting disc 7 is realized, so that the pressing disc 15 can be used for driving plants, the high-speed rotation of the cutting disc 7 is used for cutting, the accuracy of cutting is effectively improved, and the problem that the plants that are not cut are discharged together in the existing hay cutter is solved; the width and the height of the square shaft 1 are equal, so that the machining and the installation are convenient; the diameter of the circular shaft 4 is equal to the width and the height of the symmetrical moving shaft 3, so that the machining is convenient, the same square pipe can be used for machining, and the outer bearing and the like are used for fixed connection; the centers of the cutting disc 7 and the pressing disc 15 are not coincident, so that a partially overlapped shape is formed, the plants can be pressed into the limiting groove 16 after the pressing disc 15 is limited by the hay cutter shell with the matched shape, the cutting blades 9 can cut the pressed plants by using the different differential speeds with the cutting disc 7, the function of segmented cutting is realized, the plants are transferred and cut separately, the problems of blockage and uneven cutting are reduced, and the problem that the plants are cut and pressed synchronously in the existing hay cutter causes some plants to be not cut and transferred synchronously is solved.

[0033] In the description of the specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A chaff shredder blade that is easy to install, characterized in that; It includes a square frame shaft (1), a vertical inlet / outlet slot (2), a symmetrical moving shaft (3), a round shaft (4), an elastic element (5), and a limiting cover plate (6); the square frame shaft (1) has a vertical inlet / outlet slot (2) through it; the symmetrical moving shaft (3) is symmetrically slidably inserted into the vertical inlet / outlet slot (2); the end of the symmetrical moving shaft (3) is fixedly connected to a round shaft (4); the elastic element (5) is placed between the symmetrical moving shafts (3); the limiting cover plate (6) is detachably fixed to the vertical inlet / outlet slot (2); and a cutting unit is sleeved on the square frame shaft (1); The cutting unit includes a cutting disc (7) and a pressing disc (15); the cutting disc (7) and the pressing disc (15) are spaced and sleeved on the square frame shaft (1); the cutting disc (7) has a horizontal inlet / outlet groove (17); the horizontal inlet / outlet groove (17) has a circumferential groove (8); a plurality of cutting blades (9) are slidably inserted into the circumferential groove (8); a blocking cover plate (10) is detachably fixed to the horizontal inlet / outlet groove (17); the pressing disc (15) has a plurality of limiting grooves (16). The centers of the cutting disc (7) and the pressing disc (15) do not coincide; The pressing plate (15) has an opening with an external tooth (12); a driven gear (14) and a driving gear (11) are meshed on the external tooth (12); the driving gear (11) is sleeved on the square frame shaft (1); a positioning sleeve (13) is sleeved on the driven gear (14) and the driving gear (11).

2. The easy-to-install chaff shredder blade according to claim 1, characterized in that: The width and height of the rectangular axis (1) are equal.

3. The easy-to-install chaff shredder blade according to claim 2, characterized in that: The diameter of the circular shaft (4) is equal to the width and height of the symmetrically moving axis (3).

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