A rotary cultivator with a knife shaft anti-winding device

Abstract

The application discloses a knife shaft anti-winding device for rotary cultivators, which is used for anti-winding treatment of a knife shaft. A plurality of knife groups are arranged on the knife shaft at intervals. The knife shaft is rotatably arranged between two side plates and has power. A driving wheel is coaxially connected to each end of the knife shaft. The driving wheel is connected in transmission with a driven wheel through a synchronous belt. A synchronous shaft is coaxially fixed to one side of the driven wheel. The synchronous shaft is rotatably arranged on a shaft seat. A cam is arranged on the synchronous shaft. A through groove one is formed in the middle of the shaft seat. An installation plate is connected to the bottom of the shaft seat through an elastic return pad. An anti-winding assembly is penetrated through the installation plate. The upper surface of the anti-winding assembly is in contact with the cam. The anti-winding assembly is located between two adjacent knife groups.

Description

Technical Field

[0001] The invention relates to the technical field of cutter shaft cleaning, in particular to a cutter shaft anti-entanglement device for a rotary tiller. Background Art

[0002] When using a rotary tiller to cultivate the land, there is often a situation where mud, weeds, straw, etc. adhere to and entangle the cutter shaft. The cutter shaft anti-entanglement device in the existing technology often requires the rotary tiller to be stopped before processing the cutter shaft, which is time-consuming, and its cleaning method is often a toggle-type cleaning, which cannot be more effectively processed according to the actual situation.

[0003] Therefore, it is necessary to provide a knife shaft anti-entanglement device for a rotary tiller to solve the problems raised in the above background technology. Summary of the Invention

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a cutter shaft anti-entanglement device for a rotary tiller, used for anti-entanglement treatment of the cutter shaft, wherein a plurality of cutter groups are arranged at intervals on the cutter shaft, the cutter shaft is rotatably arranged between two side plates and has power, both ends of the cutter shaft are coaxially connected to a driving wheel, the driving wheel is connected to the driven wheel by a synchronous belt, a synchronous shaft is coaxially fixed to one side of the driven wheel, the synchronous shaft is rotatably arranged on the shaft seat, and a cam is provided on the synchronous shaft;

[0005] A through slot is provided in the middle of the shaft seat, and the bottom of the shaft seat is connected to a mounting plate using an elastic reset pad. An anti-entanglement component passes through the mounting plate, and the upper surface of the anti-entanglement component contacts the cam. The anti-entanglement component is located between two adjacent knife groups.

[0006] Furthermore, as a preference, cams are provided on the synchronization shafts corresponding to two adjacent knife groups, and an anti-entanglement component is provided below each cam.

[0007] Furthermore, preferably, the synchronous shaft is a hollow structure, in which an electromagnet group is embedded at a position corresponding to the cam, the electromagnet group includes a plurality of electromagnets arranged in a circle, the electromagnets are powered by a wire body, and the wire body is connected to an external power supply device using a conductive slip ring, and a magnetic block group corresponding to the electromagnet group is embedded in the cam, the magnetic block group includes a plurality of magnetic blocks arranged in a circle.

[0008] Furthermore, preferably, an axial limiting ring is fixed to the outside of the synchronization shaft at a position corresponding to the cam.

[0009] Furthermore, preferably, the shaft seat is fixed on a mounting seat, the mounting seat is fixed between two side plates, and a through slot 2 corresponding to the through slot 1 is provided on the mounting seat.

[0010] Further, as a preference, the anti-entanglement assembly includes a cylinder body, a piston rod, a processing seat and a scraper, wherein the cylinder body is fixedly embedded in the mounting plate, the piston rod is sealingly and slidingly connected in the cylinder body, the top of the piston rod is connected to the cylinder body by a return spring, an oil control hole is provided on one side of the top of the cylinder body, the oil control hole is connected to an external hydraulic controller, the processing seat is fixed to the bottom of the piston rod, and the scraper is fixed to the bottom of the processing seat.

[0011] Furthermore, preferably, the cutter shaft rotates clockwise, and the scraper is located above the left side of the cutter shaft.

[0012] Furthermore, preferably, the piston rod is a hollow structure with a receiving hole provided on it, a supply hole is provided on one side of the bottom of the cylinder body, the processing seat is connected to the piston rod, and flamethrowers are provided on both sides of some processing seats, and the flamethrowers can spray out flame tongues extending axially along the knife shaft, and nozzles are provided on both sides of another part of the processing seats, and the nozzles can spray out water tongues extending axially along the knife shaft.

[0013] Furthermore, preferably, the top of the cylinder body is arc-shaped.

[0014] Compared with the prior art, the present invention provides a device for preventing the blade shaft from winding up for a rotary tiller, which has the following beneficial effects:

[0015] In this embodiment of the present invention, the rotation of the blade shaft provides power to the anti-entanglement assembly. Furthermore, this rotation allows the anti-entanglement assembly to perform comprehensive cleaning of the blade shaft. Furthermore, because the anti-entanglement assembly is located between two adjacent blade groups, it can simultaneously perform cleaning actions during blade shaft rotation, eliminating the need to stop the machine and improving cleaning efficiency. Furthermore, some treatment seats can clean dry weeds in the circumferential gap by spraying fire, while others can clean wet weeds in the circumferential gap by spraying water. These two treatment methods do not affect the rotation of the blade shaft. Furthermore, the appropriate treatment method can be selected based on the moisture content of the soil, resulting in a more effective cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a knife shaft anti-entanglement device for a rotary tiller;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of a knife shaft anti-entanglement device for a rotary tiller;

[0018] Figure 3 This is a schematic diagram of the installation structure of an anti-entanglement component in a cutter shaft anti-entanglement device for a rotary tiller;

[0019] Figure 4This is a schematic diagram of the three-dimensional installation structure of an anti-entanglement component in a cutter shaft anti-entanglement device for a rotary tiller;

[0020] Figure 5 for Figure 3 AA cross-sectional view of ;

[0021] Figure 6 This is a schematic diagram of the structure of a synchronous shaft and a cam in a knife shaft anti-entanglement device for a rotary tiller;

[0022] In the figure: 1. Cutter shaft; 2. Side plate; 3. Driving wheel; 4. Driven wheel; 5. Synchronous shaft; 6. Cam; 7. Anti-entanglement assembly; 8. Mounting plate; 9. Elastic reset pad; 10. Shaft seat; 11. Mounting seat; 71. Cylinder body; 72. Piston rod; 73. Receiving hole; 74. Supply hole; 75. Oil control hole; 76. Reset spring; 77. Processing seat; 78. Scraper; 79. Flamethrower; 61. Magnetic block; 51. Electromagnet; 52. Axial limit ring. DETAILED DESCRIPTION

[0023] Example: See Figures 1 to 6 In an embodiment of the present invention, a knife shaft anti-entanglement device for a rotary tiller is used to perform an anti-entanglement treatment on a knife shaft 1. The knife shaft 1 is provided with a plurality of knife groups at intervals, and the knife groups include a plurality of knife bodies distributed circumferentially. In an optional embodiment, the knife group includes two knife bodies distributed circumferentially. The knife bodies can be vertical or bent. It is only necessary to ensure that there is an axial gap between two adjacent knife groups, and there is a circumferential gap between the two knife bodies in the same knife group.

[0024] The blade shaft 1 is rotatably disposed between the two side plates 2 and has power, which can be provided by an agricultural machine and will not be described in detail here;

[0025] Both ends of the cutter shaft 1 are coaxially connected to a driving wheel 3, and the driving wheel 3 is connected to the driven wheel 4 by a synchronous belt, so that the power of the cutter shaft 1 can also be transmitted to the driven wheel 4;

[0026] A synchronous shaft 5 is coaxially fixed to one side of the driven wheel 4. The synchronous shaft 5 is rotatably arranged on a shaft seat 10. A cam 6 is arranged on the synchronous shaft 5.

[0027] A through groove is provided in the middle of the shaft seat 10, and the bottom of the shaft seat 10 is connected to a mounting plate 8 by an elastic reset pad 9. An anti-entanglement component 7 passes through the mounting plate 8, and the upper surface of the anti-entanglement component 7 is in contact with the cam 6. The anti-entanglement component 7 is located between two adjacent knife groups, that is, there is an axial gap between the two adjacent knife groups, and the axial gap is used to accommodate the anti-entanglement component 7.

[0028] During implementation, when the knife shaft 1 rotates, it can drive the cam 6 to rotate, and the cam 6 can drive the anti-entanglement component 7 to move downward. Then, the anti-entanglement component 7 can be reset upward under the action of the elastic reset pad 9, thereby realizing the removal of attachments on the knife shaft by vertical reciprocating movement.

[0029] Furthermore, since the anti-entanglement component 7 is located between two adjacent knife groups, the anti-entanglement component can perform cleaning actions synchronously during the rotation of the knife shaft without stopping the machine, thereby improving the cleaning efficiency.

[0030] Specifically, the anti-entanglement component 7 includes a cylinder body 71, a piston rod 72, a processing seat 77 and a scraper 78, wherein the cylinder body 71 is fixedly embedded in the mounting plate 8, and the piston rod 72 is sealed and slidably connected to the cylinder body 71. The top of the piston rod 72 is connected to the cylinder body 71 by a return spring. An oil control hole 75 is provided on one side of the top of the cylinder body 71, and the oil control hole 75 is connected to an external hydraulic controller. The bottom of the piston rod 72 is fixed with a processing seat 77, and the bottom of the processing seat 77 is fixed with a scraper 78.

[0031] Among them, the external hydraulic controller can control the amount of hydraulic oil in the cylinder, so that the extension length of the piston rod 72 can be controlled by cooperating with the return spring.

[0032] In this way, the distance between the scraper and the knife shaft can be adjusted in the initial stage;

[0033] Thereafter, when the anti-entanglement component 7 performs vertical reciprocating movement, the scraper also performs vertical reciprocating movement.

[0034] In addition, the piston rod 72 is a hollow structure with a receiving hole 73 formed thereon. A supply hole 74 is provided on one side of the bottom of the cylinder body 71. The processing seat 77 is connected to the piston rod 72, and flamethrowers 79 are provided on both sides of some of the processing seats 77. The flamethrowers 79 can spray out flames extending axially along the knife shaft 1. The other part of the processing seats 77 are provided on both sides with nozzles, which can spray out water tongues extending axially along the knife shaft 1.

[0035] Preferably, the processing seats 77 are sequentially the 1st processing seat, the 2nd processing seat, the 3rd processing seat, ..., the nth processing seat, and the n+1th processing seat, wherein the processing seats with odd numbers are provided with flamethrowers, and the processing seats with even numbers are provided with nozzles. The processing seats provided with flamethrowers are supplied with combustion oil by the piston rod 72 so as to clean the dry weeds in the circumferential gap by spraying fire, while the processing seats provided with nozzles are supplied with water by the piston rod so as to clean the wet weeds in the circumferential gap by spraying water.

[0036] These two processing methods still will not affect the rotation of the knife shaft.

[0037] In addition, the appropriate treatment method can be selected according to the moisture level of the soil.

[0038] As a preferred embodiment, the cutter shaft 1 rotates clockwise, and the scraper 78 is located on the upper left side of the cutter shaft 1.

[0039] In this way, the cleaning effect of the scraper can be improved by the rotation of the knife shaft.

[0040] As a preferred embodiment, a cam 6 is provided on each corresponding synchronization shaft 5 between two adjacent knife groups, and an anti-entanglement component 7 is provided below each cam 6 .

[0041] As a preferred embodiment, the synchronous shaft 5 is a hollow structure, and an electromagnet group is embedded in the interior thereof at a position corresponding to the cam 6. The electromagnet group includes a plurality of electromagnets 51 arranged in a circle. The electromagnets 51 are powered by a wire body, and the wire body is connected to an external power supply device using a conductive slip ring. A magnetic block group corresponding to the electromagnet group is embedded in the cam 6, and the magnetic block group includes a plurality of magnetic blocks 61 arranged in a circle.

[0042] It should be explained that, in this embodiment, the synchronization shaft and the cam 6 are not fixedly connected, but can be connected by magnetic adsorption, so that fixed-point cleaning can be achieved, the cleaning efficiency is improved, and the energy loss is reduced.

[0043] As a preferred embodiment, an axial limiting ring 52 is fixed to the outside of the synchronization shaft 5 at a position corresponding to the cam 6 .

[0044] In this embodiment, the shaft seat 10 is fixed on the mounting seat 11 , and the mounting seat 11 is fixed between the two side plates 2 . A second through slot corresponding to the first through slot is formed on the mounting seat 11 .

[0045] As a preferred embodiment, the top of the cylinder body 71 is arc-shaped.

[0046] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A knife shaft anti-entanglement device for a rotary tiller, used for anti-entanglement treatment of a knife shaft (1), wherein a plurality of knife groups are arranged at intervals on the knife shaft (1), and the knife shaft (1) is rotatably arranged between two side plates (2) and has power, characterized in that: Both ends of the knife shaft (1) are coaxially connected to a driving wheel (3), the driving wheel (3) is connected to a driven wheel (4) by a synchronous belt, a synchronous shaft (5) is coaxially fixed to one side of the driven wheel (4), the synchronous shaft (5) is rotatably arranged on a shaft seat (10), and a cam (6) is arranged on the synchronous shaft (5); A through slot is provided in the middle of the shaft seat (10), and the bottom of the shaft seat (10) is connected to a mounting plate (8) by an elastic reset pad (9), and an anti-entanglement component (7) passes through the mounting plate (8), and the upper surface of the anti-entanglement component (7) contacts the cam (6), and the anti-entanglement component (7) is located between two adjacent knife groups; The anti-entanglement component (7) includes a cylinder body (71), a piston rod (72), a processing seat (77) and a scraper (78), wherein the cylinder body (71) is fixedly embedded in the mounting plate (8), the cylinder body (71) is sealed and slidably connected with the piston rod (72), the top of the piston rod (72) is connected to the cylinder body (71) by a return spring, an oil control hole (75) is provided on one side of the top of the cylinder body (71), and the oil control hole (75) is connected to an external hydraulic controller, the bottom of the piston rod (72) is fixed with a processing seat (77), and the bottom of the processing seat (77) is fixed with a scraper (78); The piston rod (72) is a hollow structure with a receiving hole (73) formed thereon. A supply hole (74) is provided on one side of the bottom of the cylinder body (71). The processing seat (77) is connected to the piston rod (72), and flamethrowers (79) are provided on both sides of some processing seats (77). The flamethrowers (79) can spray out flames extending along the axial direction of the knife shaft (1). The other processing seats (77) are provided on both sides with nozzles, which can spray out water tongues extending along the axial direction of the knife shaft (1).

2. The anti-entanglement device for a rotary tiller blade shaft according to claim 1, characterized in that: Cams (6) are provided on the corresponding synchronous shafts (5) between two adjacent knife groups, and an anti-entanglement component (7) is provided below each cam (6).

3. The anti-entanglement device for a rotary tiller blade shaft according to claim 1, characterized in that: The synchronous shaft (5) is a hollow structure, and an electromagnet group is embedded in the interior thereof at a position corresponding to the cam (6), the electromagnet group including a plurality of electromagnets (51) arranged in a circumferential manner, the electromagnets (51) being powered by a wire body, and the wire body being connected to an external power supply device using a conductive slip ring, and a magnetic block group corresponding to the electromagnet group is embedded in the cam (6), the magnetic block group including a plurality of magnetic blocks (61) arranged in a circumferential manner.

4. The anti-entanglement device for a rotary tiller blade shaft according to claim 3, characterized in that: An axial limiting ring (52) is fixed on the outside of the synchronization shaft (5) at a position corresponding to the cam (6).

5. The anti-entanglement device for a rotary tiller blade shaft according to claim 1, characterized in that: The shaft seat (10) is fixed on the mounting seat (11), and the mounting seat (11) is fixed between the two side plates (2). The mounting seat (11) is provided with a second through slot corresponding to the first through slot.

6. The anti-entanglement device for a rotary tiller blade shaft according to claim 1, characterized in that: The knife shaft (1) rotates clockwise, and the scraper (78) is located above the left side of the knife shaft (1).

7. The anti-entanglement device for a rotary tiller blade shaft according to claim 1, characterized in that: The top of the cylinder (71) is in an arc shape.

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