Fixed cutter head of rotary cultivator

Abstract

The utility model relates to a fixed cutter head of a rotary cultivator, and belongs to the technical field of agricultural instruments. The cutter head mainly comprises a fixed cutter head, a gasket, a first semicircular cutter head, a second semicircular cutter head, a first gasket, a second gasket, a countersunk bolt and a nut, the design that the fixed cutter head, the first semicircular cutter head and the second semicircular cutter head are combined is adopted, the first semicircular cutter head and the second semicircular cutter head can reduce the pressure of the fixed cutter head, it is guaranteed that the fixed cutter head is intact and does not deform under stress, the durability of the fixed cutter head, the first semicircular cutter head and the second semicircular cutter head is improved, and the service life of the fixed cutter head is prolonged. The blades are fixed to the fixed cutter disc, the first semicircular cutter disc and the second semicircular cutter disc through countersunk bolts and nuts, the gaskets, the first gaskets and the second gaskets are tightly attached to the blades and used for limiting displacement of the blades, the blades are not prone to loosening, the firmness of the blades during installation is improved, the connection stability of the blades is improved, and the blades are prevented from shaking during operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural machinery, and in particular relates to a fixed cutter disc of a rotary tiller. Background Art

[0002] The existing rotary tiller mounted on the tractor drives the rotary tiller shaft through the tractor's rear power connected to the gearbox mounted on the rotary tiller frame, so that the cutter disc on the rotary tiller shaft drives the rotary tiller to rotate, thereby plowing the field, breaking up the soil, weeding and other operations.

[0003] However, when the existing rotary tiller cutter disc is used, the cutter disc is first fixed and welded to the cutter shaft, and then the blade is installed on the cutter disc by tightening bolts. The connection stability between the blade and the cutter disc is poor. If a good dynamic balance cannot be guaranteed under high-speed rotary tillage, the cutter disc will vibrate, resulting in stress deformation of the cutter disc and cracking of the through holes on the cutter disc, which reduces the service life of the cutter disc. Summary of the Invention

[0004] In order to overcome the problem that the connection between the existing rotary tiller blade and the cutter disc is poor in stability, the cutter disc is easily deformed due to vibration and stress, and the through holes on the cutter disc are torn, which reduces the service life of the cutter disc and the blade, the utility model provides a fixed cutter disc for a rotary tiller; the utility model adopts a design that combines a fixed cutter disc, a first semicircular cutter disc and a second semicircular cutter disc; the first semicircular cutter disc and the second semicircular cutter disc can reduce the pressure on the fixed cutter disc, ensure that they are intact and not deformed under stress, and improve the durability and service life of the fixed cutter disc, the first semicircular cutter disc and the second semicircular cutter disc; the blade is fixed to the fixed cutter disc, the first semicircular cutter disc and the second semicircular cutter disc by countersunk bolts and nuts; the gasket, the first gasket and the second gasket fit tightly against the blade and are used to limit the displacement of the blade; the blade is not easy to loosen, which increases the reliability of the blade during installation, improves the connection stability of the blade, and avoids shaking of the blade during operation.

[0005] To achieve the above-mentioned purpose, the utility model is achieved through the following technical scheme: a fixed cutter disc of a rotary tiller mainly includes a fixed cutter disc, a gasket, a first semicircular cutter disc, a second semicircular cutter disc, a first gasket, a second gasket, a countersunk bolt, and a nut. The fixed cutter disc is fixedly welded on the cutter shaft at equal intervals, the gasket is bonded to the fixed cutter disc, a threaded hole is provided on the fixed cutter disc, the first semicircular cutter disc and the second semicircular cutter disc are clamped on the cutter shaft, the first gasket and the second gasket are bonded to the first semicircular cutter disc and the second semicircular cutter disc, the gasket, the first gasket and the second gasket are provided with a circular hole, a hexagonal mounting hole is provided on the first semicircular cutter disc and the second semicircular cutter disc, the blade is installed between the gasket, the first gasket and the second gasket, two circular mounting holes are provided on the blade, the countersunk bolt is installed in the hexagonal mounting hole, the countersunk bolt passes through the hexagonal mounting hole, the circular hole, the circular mounting hole, and the threaded hole to fix the blade between the fixed cutter disc, the first semicircular cutter disc and the second semicircular cutter disc, and the nut is installed at the bottom end of the countersunk bolt.

[0006] The gasket is bonded to the fixed cutter disc by high-temperature resistant inorganic glue, and the first gasket and the second gasket are bonded to the first semicircular cutter disc and the second semicircular cutter disc by high-temperature resistant inorganic glue.

[0007] The gasket, the first gasket and the second gasket are all rubber gaskets.

[0008] Beneficial effects of the utility model:

[0009] The utility model adopts a design that combines a fixed cutter disc, a first semicircular cutter disc and a second semicircular cutter disc. The first semicircular cutter disc and the second semicircular cutter disc can reduce the pressure on the fixed cutter disc, ensure that they are intact and not deformed under force, improve the durability and service life of the fixed cutter disc, the first semicircular cutter disc and the second semicircular cutter disc, the blade is fixed to the fixed cutter disc, the first semicircular cutter disc and the second semicircular cutter disc by countersunk bolts and nuts, the gasket, the first gasket and the second gasket fit closely to the blade and are used to limit the displacement of the blade. The blade is not easy to loosen, which increases the reliability of the blade during installation, improves the connection stability of the blade, and avoids shaking of the blade during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is an isometric schematic diagram of the present utility model.

[0011] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0012] Figure 3 It is a three-dimensional schematic diagram of the utility model.

[0013] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle.

[0014] Figure 5 This is a partial cross-sectional diagram of the utility model Figure 1 .

[0015] Figure 6 This is a partial cross-sectional diagram of the utility model Figure 2 . DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to facilitate understanding by technicians.

[0017] The utility model discloses a fixed cutter disc of a rotary tiller, wherein the fixed cutter disc of the rotary tiller mainly comprises a fixed cutter disc 1, a gasket 2, a first semicircular cutter disc 3, a second semicircular cutter disc 4, a first gasket 5, a second gasket 6, a countersunk bolt 7, and a nut 8. The fixed cutter disc 1 is fixedly welded on a cutter shaft 9 at equal intervals, the gasket 2 is bonded to the fixed cutter disc 1, a threaded hole 11 is provided on the fixed cutter disc 1, the first semicircular cutter disc 3 and the second semicircular cutter disc 4 are clamped on the cutter shaft 9, the first gasket 5 and the second gasket 6 are bonded on the first semicircular cutter disc 3 and the second semicircular cutter disc 4, the gasket 2, the first gasket 5 and the second gasket 6 are bonded on the first semicircular cutter disc 3 and the second semicircular cutter disc 4, The plate 5 and the second gasket 6 are provided with a circular hole 51, and the first semicircular cutter disc 3 and the second semicircular cutter disc 4 are provided with a hexagonal mounting hole 31. The blade 10 is installed between the gasket 2, the first gasket 5, and the second gasket 6. Two circular mounting holes 101 are provided on the blade 10. The countersunk bolt 7 is installed in the hexagonal mounting hole 31. The countersunk bolt 7 passes through the hexagonal mounting hole 31, the circular hole 51, the circular mounting hole 101, and the threaded hole 11 to fix the blade 10 between the fixed cutter disc 1, the first semicircular cutter disc 3, and the second semicircular cutter disc 4. The nut 8 is installed at the bottom end of the countersunk bolt 7.

[0018] Clamp the first circular cutter disc 3 onto the cutter shaft 9, install the blade 10 between the gasket 2 and the first gasket 5, and the countersunk bolt 7 passes through the hexagonal mounting hole 31, the round hole 51, the round mounting hole 101, and the threaded hole 11 to fix the blade 10. The nut 8 is installed at the bottom end of the countersunk bolt 7. Then clamp the second circular cutter disc 4 onto the cutter shaft 9, and install the blade 10 between the gasket 2 and the second gasket 6. The countersunk bolt 7 passes through the hexagonal mounting hole 31, the round hole 51, the round mounting hole 101, and the threaded hole 11 to fix the blade 10. The nut 8 is installed at the bottom end of the countersunk bolt 7. The setting of the countersunk bolt 7 is convenient for installation. You only need to place the countersunk bolt 7 in the hexagonal mounting hole 31 to align The countersunk bolt 7 is used to limit the position, and then the nut 8 is tightened. It is faster than ordinary bolt connections and can be applied to blades 10 of different thicknesses, expanding the scope of use of the utility model. The gasket 2, the first gasket 5, and the second gasket 6 fit closely to the blade 10 to limit the displacement of the blade 10. The blade 10 is not easy to loosen, which increases the reliability of the blade 10 during installation and improves the connection stability of the blade 10, avoiding shaking of the blade 10 during operation. The first semicircular cutter disc 3 and the second semicircular cutter disc 4 can reduce the pressure on the fixed cutter disc 1, ensuring that it is intact and not deformed under force, thereby improving the durability and service life of the fixed cutter disc 1, the first semicircular cutter disc 3, and the second semicircular cutter disc 4.

[0019] The gasket 2 is bonded to the fixed cutter disc 1 by high-temperature resistant inorganic glue, and the first gasket 5 and the second gasket 6 are bonded to the first semicircular cutter disc 3 and the second semicircular cutter disc 4 by high-temperature resistant inorganic glue; the high-temperature inorganic glue has good bonding strength and wear resistance, ensuring that the gasket 2, the first gasket 5, and the second gasket 6 are fixedly bonded to the fixed cutter disc 1, the first semicircular cutter disc 3, and the second semicircular cutter disc 4 to prevent them from falling off.

[0020] The gasket 2, the first gasket 5 and the second gasket 6 are all rubber gaskets; the gasket, the first gasket and the second gasket fit tightly against the blade to limit the displacement of the blade, so that the blade is not easily loosened, which increases the reliability of the blade during installation and improves the connection stability of the blade, thereby avoiding shaking of the blade during operation. At the same time, the rubber pad has the effect of anti-slip and shock absorption.

[0021] Working process:

[0022] When in use, the fixed cutter disc 1 is directly welded to the cutter shaft 9 for use, and then the first circular cutter disc 3 is clamped on the cutter shaft 9, and the blade 10 is installed between the gasket 2 and the first gasket 5. The countersunk bolt 7 passes through the hexagonal mounting hole 31, the round hole 51, the round mounting hole 101, and the threaded hole 11 to fix the blade 10. The nut 8 is installed at the bottom end of the countersunk bolt 7. Then the second circular cutter disc 4 is clamped on the cutter shaft 9, and the blade 10 is installed between the gasket 2 and the second gasket 6. The countersunk bolt 7 passes through the hexagonal mounting hole 31, the round hole 51, the round mounting hole 101, and the threaded hole 11 to fix the blade 10. The nut 8 is installed at the bottom end of the countersunk bolt 7. The setting of the countersunk bolt 7 is convenient for installation. You only need to put the countersunk bolt 7 The countersunk bolt 7 is placed in the hexagonal mounting hole 31 to limit the position, and then the nut 8 is tightened. It is faster than ordinary bolt connections and can be applied to blades 10 of different thicknesses, expanding the scope of use of the utility model. The gasket 2, the first gasket 5, and the second gasket 6 fit tightly against the blade 10 to limit the displacement of the blade 10. The blade 10 is not easy to loosen, which increases the reliability of the blade 10 during installation and improves the connection stability of the blade 10, avoiding shaking of the blade 10 during operation. The first semicircular cutter disc 3 and the second semicircular cutter disc 4 can reduce the pressure on the fixed cutter disc 1, ensuring that it is intact and not deformed under force, thereby improving the durability and service life of the fixed cutter disc 1, the first semicircular cutter disc 3, and the second semicircular cutter disc 4.

[0023] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A fixed cutter disc for a rotary tiller, characterized by: The fixed cutter disc of a rotary tiller comprises a fixed cutter disc (1), a gasket (2), a first semicircular cutter disc (3), a second semicircular cutter disc (4), a first gasket (5), a second gasket (6), a countersunk bolt (7), and a nut (8). The fixed cutter disc (1) is fixedly welded to a cutter shaft (9) at equal intervals. The gasket (2) is bonded to the fixed cutter disc (1). A threaded hole (11) is provided on the fixed cutter disc (1). The first semicircular cutter disc (3) and the second semicircular cutter disc (4) are clamped to the cutter shaft (9). The first gasket (5) and the second gasket (6) are bonded to the first semicircular cutter disc (3) and the second semicircular cutter disc (4). The gasket (2), the first gasket (5), and the second gasket (6) are bonded to the first semicircular cutter disc (3) and the second semicircular cutter disc (4). A circular hole (51) is provided, a hexagonal mounting hole (31) is provided on the first semicircular cutter disc (3) and the second semicircular cutter disc (4), a blade (10) is installed between the gasket (2), the first gasket (5), and the second gasket (6), two circular mounting holes (101) are provided on the blade (10), a countersunk bolt (7) is installed in the hexagonal mounting hole (31), the countersunk bolt (7) passes through the hexagonal mounting hole (31), the circular hole (51), the circular mounting hole (101), and the threaded hole (11) to fix the blade (10) between the fixed cutter disc (1), the first semicircular cutter disc (3), and the second semicircular cutter disc (4), and a nut (8) is installed at the bottom end of the countersunk bolt (7).

2. The fixed cutterhead of a rotary tiller according to claim 1, characterized in that: The gasket (2) is bonded to the fixed blade disc (1) by means of a high-temperature resistant inorganic glue, and the first gasket (5) and the second gasket (6) are bonded to the first semicircular blade disc (3) and the second semicircular blade disc (4) by means of a high-temperature resistant inorganic glue.

3. The fixed cutterhead of a rotary tiller according to claim 2, characterized in that: The gasket (2), the first gasket (5), and the second gasket (6) are all rubber gaskets.

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