Quickly mounted rotary cultivator blade shaft structure

Abstract

The utility model relates to a kind of blade shaft structures, specifically a quick-mounting rotary cultivator blade shaft structure, including rotating shaft, multiple groups of blades;Rotating shaft is installed with multiple groups of fixed disc;Further include multiple groups of connecting pieces;Including the bearing platform rotatably installed on fixed disc;Buffering member, set in fixed disc, including the extrusion of the abutment baffle for bearing platform and the elastic member of providing extrusion pressure;And the abutment baffle and fixed disc slidingly embed;When rotary cultivates, blade and the hard object such as stone in land contact, under the action of buffering member, can rotate and give way, so as to offset impact energy, avoid direct transmission to rotating shaft and driving device;It can reduce the probability of fracture, blade shaft deformation, gear box damage, to improve service life;Extrusion pressure is provided for the abutment baffle by elastic member, to make the abutment baffle extrude bearing platform, to improve the resistance of bearing platform rotation, set reasonable resistance (avoidance trigger force), avoid frequent mis-triggering influence ploughing depth.

Description

Technical Field

[0001] This utility model relates to a blade shaft structure, specifically a quick-assembly rotary tiller blade shaft structure. Background Technology

[0002] A rotary tiller is a type of tillage machinery used in conjunction with a tractor, primarily for tilling and breaking up soil. It is characterized by its strong soil-breaking ability and ability to level the ground. The rotary tiller drives the rotary blades to rotate through a transmission system, cutting, turning, and breaking up the soil, completing an integrated tillage and harrowing operation. Because the blades are in direct contact with the ground, the connection structure between the blades and the blade shaft must have a certain level of strength.

[0003] There are two common connection structures. One includes a connecting plate fixedly mounted on the cutter shaft. The blade and the connecting plate are connected by bolts, and the connection strength is reliable through the threaded connection between the bolts and the connecting plate. However, the installation is relatively cumbersome. The other also includes a connecting plate. The blade and the connecting plate are connected by a snap-fit ​​structure and limited by a locking structure. This allows for quick disassembly and installation and provides a certain degree of convenience. However, the connection strength is generally average.

[0004] During rotary tillage, the high-speed rotating blades come into direct contact with the soil. When they come into contact with hard, difficult-to-break objects in the soil, they generate high impact kinetic energy. Since the blades and the cutter shaft are rigidly connected by a common snap-fit ​​joint, the impact kinetic energy is transferred directly to the cutter shaft and then to the transmission system, which can easily lead to blade breakage, cutter shaft deformation, and gearbox damage. Summary of the Invention

[0005] The purpose of this utility model is to provide a quick-install rotary tiller blade shaft structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A quick-assembly rotary tiller blade shaft structure includes a rotating shaft, and multiple sets of blades are arranged along the circumferential and longitudinal directions of the rotating shaft.

[0008] Multiple sets of fixing discs are installed on the rotating shaft, and the multiple sets of fixing discs are equidistantly arranged along the length direction of the rotating shaft.

[0009] It also includes multiple sets of connectors; including a support platform rotatably mounted on the fixed plate; the support platform is used to engage with the blade;

[0010] A buffer element, disposed within the fixed disk, includes an abutment baffle for pressing against the support platform and an elastic element for providing the pressing force; and the abutment baffle is slidably engaged with the fixed disk.

[0011] The quick-assembly rotary tiller blade shaft structure described above includes: multiple sets of extrusion discs that abut against the fixed disc on the rotating shaft; internal threaded sleeves installed on the extrusion discs; and multiple sets of external threaded sleeves that thread with the internal threaded sleeves on the rotating shaft.

[0012] The quick-assembly rotary tiller blade shaft structure as described above: the connecting component includes a snap-fit ​​block installed on the bearing platform and a limiting post installed on the fixed plate; the blade is provided with a snap-fit ​​groove that engages with the snap-fit ​​block and an arc-shaped sliding groove that slides with the limiting post.

[0013] As described above, the quick-assembly rotary tiller blade shaft structure includes: the elastic element includes a sliding baffle slidably disposed on the fixed plate; a sliding column slidably connected to the sliding baffle is installed on the abutting baffle; a compression spring is sleeved on the sliding column; and the two ends of the compression spring abut against the abutting baffle and the sliding baffle, respectively.

[0014] The quick-assembly rotary tiller blade shaft structure described above includes: the elastic element further includes an adjusting plate rotatably mounted on the fixed plate; the adjusting plate has an inclined groove; the fixed plate has a straight groove; and the sliding baffle is equipped with a protruding post that slides in cooperation with both the straight groove and the inclined groove.

[0015] As described above, the quick-install rotary tiller blade shaft structure has: multiple sets of locking grooves evenly spaced around the circumference of the adjusting disc; a locking wedge block that engages with the locking groove is slidably fitted on the fixing disc; and a locking spring is provided on the fixing disc; the two ends of the locking spring respectively abut against the fixing disc and the locking wedge block.

[0016] As described above, the quick-release rotary tiller blade shaft structure includes a protruding post on the locking wedge that slides and engages with the fixed disc.

[0017] As described above, the quick-release rotary tiller blade shaft structure has a sliding groove on the fixed plate to provide space for the blade to move.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: During rotary tillage, when the blades come into contact with hard objects such as stones in the soil, they can rotate and make way under the action of the buffer, thereby offsetting the impact energy and avoiding direct transmission to the shaft and drive device; it can reduce the probability of breakage, blade shaft deformation, and gearbox damage, thereby improving service life; the elastic element provides a squeezing force to the contact baffle, so that the contact baffle squeezes the support platform, thereby increasing the resistance to the rotation of the support platform, setting a reasonable resistance (avoiding triggering force), and avoiding frequent false triggering that affects the tillage depth. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the blade shaft structure of a quick-assembly rotary tiller.

[0020] Figure 2 This is a schematic diagram of the fixed disc in the blade shaft structure of a quick-assembly rotary tiller.

[0021] Figure 3 This is a schematic diagram of the extrusion disc in the blade shaft structure of a quick-assembly rotary tiller.

[0022] Figure 4 for Figure 3 A schematic diagram of the structure at point A in the middle.

[0023] Figure 5 for Figure 3 A schematic diagram of the structure at point B.

[0024] Figure 6 This is a schematic diagram of the adjusting disc in the blade shaft structure of a quick-assembly rotary tiller.

[0025] Figure 7 for Figure 6 A schematic diagram of the structure at point C.

[0026] In the diagram: 1. Shaft; 101. External threaded sleeve;

[0027] 2. Fixed plate; 201. Straight groove; 202. Sliding groove; 203. Limiting post;

[0028] 3. Extrusion disc; 301. Internal threaded sleeve;

[0029] 4. Adjusting disc; 401. Inclined groove; 402. Locking groove;

[0030] 5. Foundation; 501. Connecting block;

[0031] 6. Sliding baffle; 601. Protruding column;

[0032] 7. Contact with the baffle;

[0033] 8. Sliding column;

[0034] 9. Compression spring;

[0035] 10. Locking wedge; 1001. Protruding post;

[0036] 11. Locking spring;

[0037] 12. Blade; 1201. Snap-fit ​​groove; 1202. Arc-shaped slide groove. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0039] Please see Figures 1-7 As an embodiment of the present utility model, the quick-install rotary tiller blade shaft structure includes a rotating shaft 1, and multiple sets of blades 12 are arranged along the circumferential direction and the length direction of the rotating shaft 1.

[0040] Multiple sets of fixing discs 2 are installed on the rotating shaft 1, and the multiple sets of fixing discs 2 are equidistantly arranged along the length direction of the rotating shaft 1;

[0041] It also includes multiple sets of connectors; including a support 5 rotatably mounted on the fixed plate 2; the support 5 is used to engage with the blade 12;

[0042] A buffer element is disposed within the fixed disk 2, including an abutment baffle 7 for pressing the support 5 and an elastic element for providing the pressing force; and the abutment baffle 7 is slidably engaged with the fixed disk 2.

[0043] In this embodiment, the rotating shaft 1 is fixedly connected to the drive device of the rotary tiller. The drive device drives the rotating shaft 1 to rotate, thereby driving multiple sets of fixed discs 2 to rotate synchronously. This drives the blades 12 to rotate through the connecting parts to perform the rotary tillage action.

[0044] By snapping the blade 12 onto the base 5, the blade 12 can be installed quickly, which effectively improves convenience and thus increases rotary tillage efficiency.

[0045] After the blade 12 is engaged with the base 5, it can rotate on the fixed plate 2 during rotary tillage. That is, the blade 12 is not rigidly connected to the fixed plate 2. In other words, when the blade 12 comes into contact with hard objects such as stones in the soil during rotary tillage, it can rotate to make way, thereby offsetting the impact energy and avoiding direct transmission to the rotating shaft 1 and the drive device. This can reduce the probability of breakage, blade shaft deformation, and gearbox damage, thereby improving service life.

[0046] The elastic element provides a squeezing force to the abutment baffle 7, so that the abutment baffle 7 squeezes the support platform 5, thereby increasing the resistance to the rotation of the support platform 5. A reasonable resistance (avoiding triggering force) is set to avoid frequent false triggering that affects the tillage depth.

[0047] As a further embodiment of this utility model, the rotating shaft 1 is provided with a plurality of extrusion discs 3 that abut against and cooperate with the fixed disc 2; an internal threaded sleeve 301 is installed on the extrusion disc 3; and a plurality of external threaded sleeves 101 that are threadedly engaged with the internal threaded sleeve 301 are installed on the rotating shaft 1.

[0048] In this embodiment, after the blade 12 is connected to the fixed disk 2 via the connector, the extrusion disk 3 is rotated, thereby driving the internal threaded sleeve 301 to rotate. Through the threaded engagement with the external threaded sleeve 101, the extrusion disk 3 gradually approaches the fixed disk 2. When the extrusion disk 3 comes into contact with the fixed disk 2, the extrusion disk 3 will squeeze the blade 12, making it impossible for it to easily disengage from the connector. This improves the connection strength of the connector and avoids dangerous situations such as detachment or shaking during use, thereby improving safety.

[0049] As a further embodiment of this utility model, the connecting member includes a snap-fit ​​block 501 installed on the support 5 and a limiting post 203 installed on the fixed plate 2; the blade 12 is provided with a snap-fit ​​groove 1201 that engages with the snap-fit ​​block 501 and an arc-shaped sliding groove 1202 that slides with the limiting post 203.

[0050] In this embodiment, the process of connecting the blade 12 to the fixed disk 2 is as follows: the snap-fit ​​groove 1201 is snapped into the snap-fit ​​block 501, and the limiting post 203 is slidably connected to the arc-shaped sliding groove 1202.

[0051] By engaging the locking groove 1201 with the locking block 501, the blade 12 can be connected to the base 5, preventing the blade 12 from shifting on the base 5. This improves the stability of the blade 12, allowing it to rotate and drive the base 5 to rotate, thus engaging with the abutment baffle 7. During rotary tillage, when the blade 12 comes into contact with hard objects such as stones in the soil, it can rotate to make way, thereby offsetting the impact energy and preventing it from being directly transmitted to the rotating shaft 1 and the drive device. This reduces the probability of breakage, blade shaft deformation, and gearbox damage, thus increasing service life.

[0052] When the blade 12 rotates, the limiting post 203 slides in the arc-shaped slide groove 1202. The stability can be further improved by the sliding engagement of the limiting post 203 and the arc-shaped slide groove 1202.

[0053] As a further embodiment of this utility model, the elastic element includes a sliding baffle 6 slidably disposed on the fixed plate 2, a sliding column 8 slidably connected to the sliding baffle 6 is installed on the abutting baffle 7, a compression spring 9 is sleeved on the sliding column 8, and the two ends of the compression spring 9 abut against the abutting baffle 7 and the sliding baffle 6 respectively.

[0054] In this embodiment, during rotary tillage, when the blade 12 comes into contact with a hard, difficult-to-break object, it will rotate to make way. At this time, the blade 12 will drive the support 5 to rotate. During this process, the support 5 will press against the abutment baffle 7, so that the abutment baffle 7 moves towards the sliding baffle 6, thereby driving the slide column 8 to slide within the sliding baffle 6 and compressing the spring 9.

[0055] During the compression process, the spring 9 continuously increases its elastic force, thereby gradually offsetting the kinetic energy of the buffer blade 12 colliding with harder, more difficult-to-break objects, thus reducing the probability of breakage, blade shaft deformation, and gearbox damage, and thus improving service life.

[0056] After the blade 12 separates from the object, the elastic force of the squeeze spring 9 can drive the blade 12 and the support 5 to rotate in opposite directions to reset, thereby continuing to perform rotary tillage.

[0057] As a further embodiment of this utility model, the elastic element also includes an adjusting disc 4 rotatably mounted on the fixed disc 2; the adjusting disc 4 is provided with an inclined groove 401; the fixed disc 2 is provided with a straight groove 201; and the sliding baffle 6 is provided with a protruding column 601 that slides in cooperation with both the straight groove 201 and the inclined groove 401.

[0058] In this embodiment, rotating the adjusting disk 4 causes the inclined groove 401 to rotate, so that the protruding post 601 slides into the inclined groove 401. During this process, the protruding post 601 also slides into the straight groove 201. Through the sliding engagement of the protruding post 601 in the inclined groove 401 and the straight groove 201, the sliding baffle 6 can be driven to move closer to the contact baffle 7, thereby compressing the compression spring 9 and increasing the elastic force of the compression spring 9.

[0059] By increasing the initial elastic force of the compression spring 9, the resistance to the rotation of the support platform 5 is increased, and a reasonable resistance (avoidance triggering force) is set to avoid frequent false triggering that affects the tillage depth.

[0060] As a further embodiment of this utility model, multiple sets of locking grooves 402 are equidistantly provided along the circumference of the adjusting disk 4; a locking wedge 10 that engages with the locking groove 402 is slidably fitted on the fixed disk 2; and a locking spring 11 is provided on the fixed disk 2; the two ends of the locking spring 11 abut against the fixed disk 2 and the locking wedge 10 respectively.

[0061] In this embodiment, the locking wedge 10 is inclined on one side and radially arranged along the adjusting plate 4 on the other side; the locking groove 402 is inclined on one side and radially arranged along the adjusting plate 4 on the other side.

[0062] When the adjusting disc 4 is rotated to increase the elastic force of the compression spring 9, the inclined side of the locking groove 402 cooperates with the inclined side of the locking wedge 10 and squeezes the locking wedge 10, causing it to move towards the axis of the rotating shaft 1, thereby compressing the locking spring 11 and causing the locking wedge 10 to move out of position, thus completing the rotation process.

[0063] When the adjusting disc 4 stops rotating, the other side of the locking wedge 10 and the other side of the locking groove 402 engage with each other, thereby restricting the rotation of the adjusting disc 4. This prevents the adjusting disc 4 from rotating in the opposite direction during use, which would reduce the elasticity of the compression spring 9. This ensures the stability of the device and prevents the blade 12 from rotating easily during use, thus reducing the rotary tillage effect.

[0064] As a further embodiment of this utility model, the locking wedge block 10 is equipped with a protruding post 1001 that slides and engages with the fixed disk 2.

[0065] In this embodiment, applying external force causes the protruding post 1001 to move in the direction of the axis of the rotating shaft 1, and the locking wedge 10 can actively disengage from the locking groove 402, thereby allowing the adjusting plate 4 to rotate freely, thereby adjusting the elastic force of the compression spring 9, which is convenient to use.

[0066] As a further improvement of this utility model, the fixed plate 2 is provided with a sliding groove 202 for providing the blade 12 with a space for movement.

[0067] In this embodiment, after the object collides, the blade 12 will slide in the sliding groove 202, thereby avoiding direct contact between the blade 12 and the fixed disk 2, thus avoiding damage to the fixed disk 2 and the blade 12 due to the impact kinetic energy, and improving the service life.

[0068] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A quick-assembly rotary tiller blade shaft structure, comprising a rotating shaft (1), and multiple sets of blades (12) arranged along the circumferential and length directions of the rotating shaft (1); Its features are, Multiple sets of fixed disks (2) are installed on the rotating shaft (1), and the multiple sets of fixed disks (2) are equidistantly arranged along the length direction of the rotating shaft (1); It also includes multiple sets of connectors; Includes a support (5) rotatably mounted on the fixed plate (2); the support (5) is used to engage with the blade (12); The buffer is disposed within the fixed disk (2) and includes an abutment baffle (7) for pressing the support (5) and an elastic element for providing the pressing force; and the abutment baffle (7) is slidably engaged with the fixed disk (2).

2. The quick-assembly rotary tiller blade shaft structure according to claim 1, characterized in that, The rotating shaft (1) is provided with multiple sets of extrusion discs (3) that abut against the fixed disc (2); an internal threaded sleeve (301) is installed on the extrusion disc (3); and multiple sets of external threaded sleeves (101) that are threadedly engaged with the internal threaded sleeve (301) are installed on the rotating shaft (1).

3. The quick-assembly rotary tiller blade shaft structure according to claim 1, characterized in that, The connector includes a snap-fit ​​block (501) installed on the support (5) and a limiting post (203) installed on the fixed plate (2); the blade (12) is provided with a snap-fit ​​groove (1201) that snaps into the snap-fit ​​block (501) and an arc-shaped sliding groove (1202) that slides into the limiting post (203).

4. The quick-assembly rotary tiller blade shaft structure according to claim 1, characterized in that, The elastic element includes a sliding baffle (6) slidably disposed on the fixed plate (2), a sliding column (8) slidably connected to the sliding baffle (6) is installed on the abutting baffle (7), a compression spring (9) is sleeved on the sliding column (8), and the two ends of the compression spring (9) abut against the abutting baffle (7) and the sliding baffle (6) respectively.

5. The quick-assembly rotary tiller blade shaft structure according to claim 4, characterized in that, The elastic element also includes an adjusting plate (4) rotatably mounted on the fixed plate (2); the adjusting plate (4) has a slanted groove (401); the fixed plate (2) has a straight groove (201); the sliding baffle (6) is equipped with a protruding column (601) that slides in cooperation with both the straight groove (201) and the slanted groove (401).

6. The quick-assembly rotary tiller blade shaft structure according to claim 5, characterized in that, The adjusting disc (4) has multiple sets of locking grooves (402) evenly spaced in the circumferential direction; the fixed disc (2) has a locking wedge (10) that engages with the locking groove (402); and the fixed disc (2) is provided with a locking spring (11); the two ends of the locking spring (11) abut against the fixed disc (2) and the locking wedge (10) respectively.

7. The quick-assembly rotary tiller blade shaft structure according to claim 6, characterized in that, The locking wedge (10) is equipped with a protruding post (1001) that slides into the fixing plate (2).

8. The quick-assembly rotary tiller blade shaft structure according to claim 1, characterized in that, The fixed plate (2) is provided with a sliding groove (202) for providing the blade (12) with a space for movement.

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