Rotary cutting blade for chopping and returning straws to field

Abstract

The utility model relates to the technical field of straw chopping and returning, in particular to a rotary cutting blade for straw chopping and returning, which comprises a blade body, an outer blade and a bushing, and the design of the rotary cutting blade for straw chopping and returning allows the blade body and the outer blade to be separated, so that in the long-time use process, even if the outer blade is abraded and needs to be replaced, the outer blade can be replaced, and the service life of the blade is prolonged. In addition, the whole blade does not need to be replaced, the maintenance cost is remarkably reduced due to the design, a user only needs to purchase and replace the abraded outer cutting edge instead of the whole blade, and due to the modular design, material waste is reduced, and economical efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a straw chopping field technology field, specifically speaking, a kind of straw chopping field with rotary cutting blade. BACKGROUND

[0002] With the rapid development of modern agriculture, straw processing becomes an agricultural production that cannot be ignored, and the rational use of straw can not only reduce environmental pollution, but also increase soil fertility and promote sustainable development of agriculture. Among many straw processing methods, straw chopping field is highly respected due to its environmental protection and economic benefits. During straw chopping field, rotary cutting blades play a crucial role. They are the sharp tools in agricultural machinery for efficiently cutting and mixing straw into soil. The design and performance of rotary cutting blades directly affect the efficiency and quality of straw field, and thus affect soil structure and crop growth.

[0003] However, the existing rotary cutting blade for straw chopping field needs to replace the entire blade after the blade wears out, which not only increases material waste but also increases maintenance costs. The existing rotary cutting blade for straw chopping field directly contacts with the agricultural machine shaft, lacks effective wear protection measures, resulting in fast wear of the blade body and poor durability. The existing rotary cutting blade for straw chopping field takes a long time to replace the blade, increases the downtime of agricultural operations and affects the efficiency of operations. UTILITY MODEL CONTENT

[0004] To solve the problems in the prior art, the utility model provides a rotary cutting blade for straw chopping field.

[0005] The utility model solves the technical problems by adopting the following technical scheme: a rotary cutting blade for straw chopping field, comprising a blade body, an outer blade and a bushing, the blade body comprises a blade head and a blade tail, the blade tail is fixed at one end of the blade head, an installation sleeve is embedded at the end of the blade head away from the blade tail, the blade head, the installation sleeve and the blade tail are integrally forged, the bushing is inserted and connected in the installation sleeve, the installation sleeve is provided and the bushing is used, so that the rotation of the blade body is transmitted through the bushing, and the rotational friction between the blade body and the straw field machine pin shaft is converted into the rotational friction between the bushing and the pin shaft. This design reduces the wear of the blade body, and the outer blade is installed on the blade tail. The design of the rotary cutting blade for straw chopping field allows the blade body and the outer blade to be separated, so that even if the outer blade needs to be replaced due to wear during long-term use, the entire blade does not need to be replaced.

[0006] The outer blade is provided with a blade edge on both sides, and the other side of the outer blade can be used after the one side is worn out and removed and reversed.

[0007] Preferably, the two ends of the mounting sleeve protrude from the two sides of the tool head, and the cross section of the hole in the mounting sleeve is a regular polygon structure.

[0008] Preferably, the bushing is composed of a shaft sleeve and two gaskets, the cross section of the hole in the shaft sleeve is a circular structure, the outer cross section of the shaft sleeve is a regular polygon, and the outer cross section of the shaft sleeve is matched with the cross section of the hole in the mounting sleeve.

[0009] Preferably, the center hole of the gasket has the same diameter as the center hole of the shaft sleeve, the one side of the gasket is provided with a slot with a regular polygon cross section, the slot cross section is matched with the outer cross section of the shaft sleeve, the end of the shaft sleeve is inserted into the slot, and the gaskets at the two ends of the shaft sleeve in the bushing play an isolation role.

[0010] Preferably, the one side of the outer blade close to the tool tail is provided with a slot with an isosceles trapezoidal cross section, the cross section of the tool tail is matched with the cross section of the slot, the tool tail is inserted into the slot, and the end of the tool tail away from the tool head is flush with the end of the outer blade.

[0011] Preferably, the tail of the knife is provided with a plurality of hidden grooves away from one side of the outer blade, a plurality of screw holes are formed in the plurality of hidden grooves, a plurality of screw grooves are formed in the sleeve groove of the outer blade, and the plurality of screw grooves correspond to the plurality of screw holes one by one, the design of the hidden groove and the screw hole allows the tail of the knife to be fixed to the outer blade accurately by the bolt, and the screw hole provides a hidden mounting point, so that the bolt can firmly fix the outer blade.

[0012] Preferably, the bolt comprises a nut and a screw rod, the nut is fixed at one end of the screw rod, the screw rod is threadedly matched in the screw hole, the bottom end of the screw rod is threadedly matched in the screw groove, and after the screw rod is completely screwed into the screw hole and the screw groove, the nut is located in the hidden groove, a hexagonal recess is formed in the side of the nut away from the screw rod, the screw rod is threadedly matched in the screw hole, and the bottom end is threadedly matched in the screw groove, so that the double thread matching mode provides strong fixing force, ensures that the tail of the knife and the outer blade are stably connected in high-strength operation, reduces loosening or falling of the blade caused by vibration or impact, and the hexagonal recess formed in the side of the nut away from the screw rod makes it more convenient and fast to tighten or loosen the nut by using a wrench or other tools.

[0013] The utility model discloses the beneficial effect of:

[0014] (1) the utility model discloses a kind of straw cutting and returning to field rotary cutting blade, the design of the straw cutting and returning to field rotary cutting blade allows the separation of blade body and outer blade, so that even if outer blade needs to be replaced due to wear in the long use process, the entire blade does not need to be replaced, this design significantly reduces maintenance cost, because user only needs to purchase and replace worn outer blade, instead of entire blade, this modular design not only reduces material waste, but also improves economy;

[0015] (2) the utility model discloses a kind of straw cutting and returning to field rotary cutting blade, the outer blade of the straw cutting and returning to field rotary cutting blade is fixed by bolt with blade body, this design makes the disassembly and assembly of outer blade very convenient and fast, compared with traditional directly disassembly and assembly blade, the mode of replacing outer blade can greatly reduce the time and labor needed for maintaining blade, in agricultural operation, time is very valuable, this design can make machine faster re-engage in use, reduce downtime caused by maintenance, in addition, since disassembly and assembly are simple, operator can more easily carry out daily inspection and maintenance, ensure that blade always maintains optimal working condition;

[0016] (3) The utility model discloses a kind of straw cutting and chopping for returning to field rotary cutting blade, in this straw cutting and chopping for returning to field rotary cutting blade, the setting of installation sleeve and the use of bushing, so that the rotation of tool body is passed through bushing transmission, the rotation friction of tool body and straw returning machine pin shaft is changed into the rotation friction of bushing and pin shaft, this design reduces the wear of tool body, improves its durability, simultaneously, the cost of bushing is lower, when bushing wears, replacement cost is far lower than replacing entire tool body, which makes maintenance more economical. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model is further described below in connection with drawings and embodiment.

[0018] Figure 1 A kind of preferred embodiment overall structure schematic diagram of straw cutting and chopping for returning to field rotary cutting blade provided by the utility model is shown.

[0019] Figure 2 The tool body structure schematic diagram of the utility model is shown.

[0020] Figure 3 The outer blade structure schematic diagram of the utility model is shown.

[0021] Figure 4 The bolt structure schematic diagram of the utility model is shown.

[0022] Figure 5 The bushing structure schematic diagram of the utility model is shown.

[0023] Figure 6 The gasket structure schematic diagram of the utility model is shown.

[0024] In the drawing: 1, tool body;101, tool head;102, installation sleeve;103, tool tail;104, hidden groove;105, screw hole;2, outer blade;201, sleeve groove;202, blade edge;203, screw groove;3, bolt;301, nut;302, screw rod;303, recess;4, bushing;401, shaft sleeve;402, gasket;403, insertion slot. DETAILED DESCRIPTION

[0025] In order to make the technical means, creation features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in connection with specific embodiment.

[0026] For example, Figures 1-6The utility model discloses a kind of rotary cutting blades for straw chopping and returning to field, including blade body 1, outer blade 2 and bushing 4, blade body 1 includes tool bit 101 and tool tail 103, tool tail 103 is fixed in tool bit 101 one end, tool bit 101, installation sleeve 102 and tool tail 103 are integrally forged, bushing 4 is inserted into installation sleeve 102, the setting of installation sleeve 102 and the use of bushing 4, the rotation of blade body 1 is passed through bushing 4 transmission, the rotation friction of tool body 1 and straw returning to field machine pin shaft is changed into the rotation friction of bushing 4 and pin shaft, this design reduces the wear of blade body 1, improves its durability, simultaneously, the cost of bushing 4 is lower, when bushing 4 wears, replacement cost is far lower than replacing entire blade body 1, this makes maintenance more economical, outer blade 2 is installed on tool tail 103, the design of this rotary cutting blade for straw chopping and returning to field allows blade body 1 and outer blade 2 to separate, so that in the use process of long time, even if outer blade 2 needs to be replaced due to wear, entire blade also does not need to be replaced, this design significantly reduces maintenance cost, because user only needs to purchase and replace worn outer blade 2, instead of entire blade, this modular design not only reduces material waste, but also improves economy;

[0027] Wherein, the side and both ends of tool tail 103 are covered by outer blade 2, the both sides of outer blade 2 are provided with blade edge 202, the both sides of outer blade 2 are provided with blade edge 202, this design allows outer blade 2 to be disassembled and reversed after one side wears, and the blade edge 202 of the other side is used, this double-blade design effectively prolongs the service life of outer blade 2, reduces the replacement frequency, thereby reducing the overall maintenance cost, in addition, this design also improves the utilization efficiency of resources, because it allows outer blade 2 to be more fully utilized, reduces the waste caused by single-side wear, the side of tool tail 103 away from outer blade 2 is provided with a plurality of bolts 3 for fixing outer blade 2, outer blade 2 is fixed with blade body 1 through bolts 3, this design makes the disassembly and assembly of outer blade 2 very convenient and fast, compared with traditional direct disassembly and assembly of blade, this way of replacing outer blade 2 can greatly reduce the time and labor required for maintaining blade, time is very valuable in agricultural operation, this design can make the machine faster to be put into use again, reduces downtime caused by maintenance, in addition, due to convenient disassembly and assembly, operator can more easily carry out daily inspection and maintenance, to ensure that blade always maintains the best working condition.

[0028] In an optional embodiment of the embodiment, the both ends of installation sleeve 102 protrude from the both sides of tool bit 101, the hole passage inside installation sleeve 102 is a regular polygon structure, the setting of installation sleeve 102 can improve the stability and durability of the connection between tool bit 101 and straw returning to field equipment.

[0029] In an optional embodiment of the present embodiment, the bushing 4 is composed of a shaft sleeve 401 and two gaskets 402, the inner hole of the shaft sleeve 401 is circular in cross section, the outer cross section of the shaft sleeve 401 is a regular polygon, and the outer cross section of the shaft sleeve 401 is adapted to the hole cross section of the mounting sleeve 102, the shaft sleeve 401 is inserted and fitted in the mounting sleeve 102, and the length of the shaft sleeve 401 is greater than the length of the mounting sleeve 102, the two gaskets 402 are respectively sleeved on both ends of the shaft sleeve 401, and the inner hole of the shaft sleeve 401 is circular in cross section and is adapted to the regular polygon hole cross section of the mounting sleeve 102. This design allows the shaft sleeve 401 to rotate freely in the mounting sleeve 102 without relative rotation, ensuring synchronous rotation between the tool bit 101 and the bushing 4. The design of the bushing 4 allows the rotation of the tool bit 101 to be transmitted through the bushing 4 instead of being directly in contact with the pin shaft of the straw mulching machine, thereby converting the rotational friction between the tool body 1 and the pin shaft into rotational friction between the bushing 4 and the pin shaft, reducing the wear of the tool body 1 and prolonging the service life of the tool body.

[0030] In an optional embodiment of the present embodiment, the center hole of the gasket 402 is the same size as the center hole of the shaft sleeve 401, the gasket 402 is provided with a slot 403 with a regular polygonal cross section on one side, the slot 403 is adapted to the outer cross section of the shaft sleeve 401, and the shaft sleeve 401 is inserted and fitted in the slot 403. The gaskets 402 at both ends of the shaft sleeve 401 in the bushing 4 play an isolation role. In actual application, when three blades are installed and used as a group, the presence of the gaskets 402 can prevent direct contact and wear between the blades. This design not only protects the blades but also improves the service life of the blade group. Since the gaskets 402 are relatively inexpensive and easy to replace, this design also reduces long-term maintenance costs, making the blade group more economical and durable.

[0031] In an optional embodiment of the present embodiment, the outer blade 2 is provided with a sleeve groove 201 with an isosceles trapezoidal cross section on the side close to the tool tail 103, the tool tail 103 is adapted to the cross section of the sleeve groove 201, the tool tail 103 is inserted and fitted in the sleeve groove 201, and the end of the tool tail 103 away from the tool bit 101 is flush with the end of the outer blade 2. The isosceles trapezoidal sleeve groove 201 provides a stable fitting method, allowing the tool tail 103 to securely hold the outer blade 2. Due to the symmetry of the isosceles trapezoid and the stability of the trapezoid, this structure can evenly distribute the stress, reducing deformation or damage caused by external forces, thereby improving the durability and reliability of the entire blade. The adaptation of the tool tail 103 and the sleeve groove 201 allows the outer blade 2 to be quickly inserted and removed. This quick replacement mechanism is particularly important when the outer blade 2 is worn or damaged, as it can reduce maintenance time and labor intensity, improving work efficiency.

[0032] In an optional embodiment of the present embodiment, the tail 103 is provided with a plurality of hidden grooves 104 on the side away from the outer blade 2, and a plurality of screw holes 105 are formed in the hidden grooves 104. A plurality of screw grooves 203 are formed in the sleeve groove 201 of the outer blade 2, and each screw groove 203 corresponds to a screw hole 105. The design of the hidden groove 104 and the screw hole 105 allows the tail 103 to be accurately fixed to the outer blade 2 by the bolt 3. The screw hole 105 provides a hidden mounting point, so that the bolt 3 can firmly fix the outer blade 2, while maintaining the neatness and streamline of the blade appearance, thereby helping to reduce the additional resistance caused by the design of the blade during operation, and improving the operation efficiency.

[0033] In an optional embodiment of the present embodiment, the bolt 3 includes a nut 301 and a screw rod 302. The nut 301 is fixed to one end of the screw rod 302. The screw rod 302 is threadedly fitted in the screw hole 105. The bottom end of the screw rod 302 is threadedly fitted in the screw groove 203. After the screw rod 302 is completely screwed into the screw hole 105 and the screw groove 203, the nut 301 is located in the hidden groove 104. The side of the nut 301 away from the screw rod 302 is provided with a hexagonal recess 303. The screw rod 302 is threadedly fitted in the screw hole 105, and the bottom end is threadedly fitted in the screw groove 203. This double-thread fitting mode provides strong fixing force, ensures that the tail 103 and the outer blade 2 remain stably connected during high-strength operation, reduces the loosening or falling off of the blade caused by vibration or impact, and thus improves the safety and reliability of the operation. The side of the nut 301 away from the screw rod 302 is provided with a hexagonal recess 303. This design makes it more convenient and fast to tighten or loosen the nut 301 using a wrench or other tools.

[0034] In use, first, check the knife body 1, including the knife head 101, the knife tail 103 and the installation sleeve 102, ensure that they are integrally forged and have no damage, prepare the bushing 4, including the shaft sleeve 401 and two gaskets 402, ensure that the shaft sleeve 401 and the gasket 402 of the bushing 4 are intact, insert the shaft sleeve 401 of the bushing 4 into the installation sleeve 102, ensure that the regular polygonal outer section of the shaft sleeve 401 is adapted to the hole section of the installation sleeve 102, the length of the shaft sleeve 401 is greater than the length of the installation sleeve 102, so as to ensure that the bushing 4 can work stably in the installation sleeve 102, the two gaskets 402 are respectively sleeved at both ends of the shaft sleeve 401, the regular polygonal structure slot 403 of the gasket 402 is adapted to the outer section of the shaft sleeve 401, and the gasket 402 plays a role of isolation and protection, the use of the bushing 4 changes the rotating friction between the knife body 1 and the straw returning machine pin shaft into the rotating friction between the bushing 4 and the pin shaft, reduces the wear of the knife body 1, improves the durability, the bushing 4 is low in cost, convenient to replace, high in economy, and reduces the long-term maintenance cost, then, check the outer blade 2, ensure that the blade edge 202 is not damaged, and the sleeve slot 201 of the outer blade 2 is intact, insert the knife tail 103 into the sleeve slot 201 of the isosceles trapezoidal structure, ensure that the knife tail 103 is flush with the end of the outer blade 2, fix the outer blade 2 on the knife tail 103 by the bolt 3 through the screw hole 105 in the hidden groove 104, the screw rod 302 is screwed into the screw hole 105, and the bottom end is screwed into the screw groove 203, the quick plug-in and dismounting design of the outer blade 2 reduces the maintenance time and labor intensity, improves the work efficiency, the double-blade design of the outer blade 2 prolongs the service life, reduces the replacement frequency, and reduces the maintenance cost, finally, ensure that all components are correctly installed, the bolt 3 is fastened, the bushing 4 is correctly positioned, the three blades are a group, and a pin is used to penetrate the bushings 4 on the three blades, so that the three blades are fixed on the straw returning machine blade installation place.

[0035] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above implementation and description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A rotary cutting blade for chopping straw for returning to field, comprising a blade body (1), an outer blade (2) and a bushing (4), characterized in that: The tool body (1) comprises a tool head (101) and a tool tail (103), the tool tail (103) is fixed at one end of the tool head (101), an installation sleeve (102) is embedded at the end of the tool head (101) away from the tool tail (103), the tool head (101), the installation sleeve (102) and the tool tail (103) are integrally forged, the bushing (4) is inserted and matched in the installation sleeve (102), and the outer blade (2) is installed on the tool tail (103). The outer blade (2) covers one side and both ends of the tool tail (103), blade edges (202) are arranged on both sides of the outer blade (2), and a plurality of bolts (3) for fixing the outer blade (2) are arranged on the side of the tool tail (103) away from the outer blade (2).

2. The rotary cutting blade for chopping straw for returning to field according to claim 1, characterized in that: The two ends of the installation sleeve (102) protrude from the two sides of the tool head (101), and the cross section of the hole in the installation sleeve (102) is a regular polygon structure.

3. The rotary cutting blade for chopping straw for returning to field according to claim 2, characterized in that: The bushing (4) is composed of an axle sleeve (401) and two gaskets (402), the hole in the axle sleeve (401) is a circular structure, the outer cross section of the axle sleeve (401) is a regular polygon, the outer cross section of the axle sleeve (401) is matched with the cross section of the hole in the installation sleeve (102), the axle sleeve (401) is inserted and matched in the installation sleeve (102), the length of the axle sleeve (401) is greater than the length of the installation sleeve (102), and the two gaskets (402) are sleeved at the two ends of the axle sleeve (401).

4. The rotary cutting blade for chopping straw for returning to field according to claim 3, characterized in that: The central hole of the gasket (402) has the same diameter as the central hole of the axle sleeve (401), a slot (403) with a regular polygon structure is arranged on one side of the gasket (402), the cross section of the slot (403) is matched with the outer cross section of the axle sleeve (401), and the end of the axle sleeve (401) is inserted and matched in the slot (403).

5. The rotary cutting blade for chopping and incorporating straw into soil according to claim 1, characterized in that: A sleeve groove (201) with an isosceles trapezoidal structure is arranged on the side of the outer blade (2) close to the tool tail (103), the cross section of the tool tail (103) is matched with the cross section of the sleeve groove (201), the tool tail (103) is inserted and matched in the sleeve groove (201), and the end of the tool tail (103) away from the tool head (101) is flush with the end of the outer blade (2).

6. The rotary cutting blade for chopping straw for returning to field according to claim 5, characterized in that: A plurality of hidden grooves (104) are arranged on the side of the tool tail (103) away from the outer blade (2), screw holes (105) are arranged in the hidden grooves (104), a plurality of screw grooves (203) are arranged in the sleeve groove (201) of the outer blade (2), and the plurality of screw grooves (203) correspond to the plurality of screw holes (105) one by one.

7. The rotary cutting blade for chopping straw for returning to field according to claim 6, characterized in that: The bolt (3) comprises a nut (301) and a screw rod (302), the nut (301) is fixed at one end of the screw rod (302), the screw rod (302) is threadedly matched in the screw hole (105), the bottom end of the screw rod (302) is threadedly matched in the screw groove (203), after the screw rod (302) is completely screwed into the screw hole (105) and the screw groove (203), the nut (301) is located in the hidden groove (104), and a recess (303) with a regular hexagonal structure is arranged on the side of the nut (301) away from the screw rod (302).

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