A tillage machine with easy-to-change dryland blades

Abstract

This utility model belongs to the field of tillage machine technology, specifically relating to a tillage machine with convenient dryland blade replacement. It includes a rotating shaft and multiple rotary tillers mounted on the rotating shaft. A drive device is located above the rotating shaft and is mounted on a support frame. A chain frame for driving the drive device and connecting to the rotating shaft is mounted on the bottom surface of the support frame. An upwardly extending, outwardly inclined handle is mounted on the support frame. This utility model optimizes the fixing method between the dryland blade and the insert sleeve through the rotary tillers mounted on the rotating shaft and their locking mechanism. This structure eliminates the need for wrenches or other tools for rotation; simply releasing the limiting constraint of the insert pin in the locking mechanism allows the insert pin to be removed and the dryland blade replaced. Then, by re-adjusting the locking mechanism in the opposite direction to re-fix the insert pin, the installation of the dryland blade is completed. This design significantly improves the efficiency of dryland blade replacement and enhances the practicality of the equipment.

Description

Technical Field

[0001] This utility model belongs to the field of tillage machine technology, specifically relating to a tillage machine with convenient replacement of dryland blades. Background Technology

[0002] In traditional dryland tillage machinery, rotary tillage blades (dryland blades) are generally installed using bolts and nuts. While this fixing structure offers the advantage of a stable connection, it reveals significant operational drawbacks in actual field operations: First, due to the frequent contact between the blades and hard objects such as soil and gravel during tillage, the bolt threads are easily clogged with mud or corroded, making disassembly difficult; second, each time blades are replaced, operators must carry a special wrench and perform a lengthy bending and tightening or disassembling operation, which is not only time-consuming and laborious, but also prone to being lost in muddy working environments, thus affecting the efficiency of dryland blade replacement. Therefore, this utility model proposes a tillage machine with convenient dryland blade replacement to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a tillage machine with a convenient tool for replacing dryland blades, which can solve the above-mentioned technical problems.

[0004] The specific technical solution adopted by this utility model is as follows: This utility model provides a tillage machine with convenient dryland blade replacement, including a rotating shaft and multiple rotary tillage components arranged on the rotating shaft. A drive device is arranged above the rotating shaft. The drive device is mounted on a support frame. A chain frame for driving the drive device to connect to the rotating shaft is installed on the bottom surface of the support frame. An upwardly inclined handrail is installed on the support frame. A collision protection plate is arranged on the front of the drive device and is installed on a vertically bent square tube of the support frame. The side of the support frame is equipped with a support mechanism corresponding to the front of the drive device; Multiple rotary tillers are axially and equally distributed on a rotating shaft, with adjacent rotary tillers circumferentially spaced at 60° intervals. Each rotary tiller includes a mounting sleeve, a dryland blade, and fasteners. The mounting sleeve is mounted on the rotating shaft, and the fasteners pass through the mounting sleeve and the rotating shaft to secure them together. Multiple dryland blades are provided and are circumferentially and equally distributed around the mounting sleeve. Each dryland blade is inserted into a connecting sleeve. Multiple connecting sleeves are provided and are circumferentially distributed around the outer periphery of the mounting sleeve. The connecting sleeves are provided with a locking mechanism to prevent the dryland blades from disengaging.

[0005] Preferably, the locking mechanism includes a pin shaft, a push spring, and a constraint clamp. The pin shaft passes through a circular hole opened on the insertion sleeve and the dry cutting tool. The push spring is sleeved on the pin shaft. A retaining ring is slidably sleeved on the pin shaft. The push spring is disposed between the mounting sleeve and the retaining ring and is sleeved on one side of the free end of the pin shaft.

[0006] Preferably, the constraint hoop is provided with two symmetrical insertion parts, which are symmetrically inserted at both ends of the rotary positioning hole. The rotary positioning hole is opened through the outer protrusion. The upper side of the constraint hoop is provided with a snap-fit ​​part, which is snapped into the recess. The recess is opened on the outer periphery of the pin shaft. The snap-fit ​​part on the constraint hoop is in a blocking state with the retaining ring.

[0007] Preferably, the notch is a three-sided perpendicular cutting edge, and the snap-fit ​​part is snapped into the cutting edge.

[0008] Preferably, the support mechanism includes a support leg and a tension spring. The upper side of the support leg is rotatably mounted on the free end of the extension beam. Two tension springs are provided and distributed on the symmetrical sides of the support leg. An upper retaining shaft and a lower retaining shaft are respectively sleeved on the upper and lower sides of the tension spring. The upper retaining shaft is fixed to the side of the extension beam, and the lower retaining shaft is fixed to the support leg.

[0009] Preferably, the two sides of the support frame are fitted with shielding plates for blocking the rotary tiller by screws.

[0010] The beneficial effects are: This invention optimizes the fixing method between the dryland blade and the insert sleeve by using a rotary tiller and its locking mechanism mounted on the rotating shaft. This structure eliminates the need for wrenches or other tools for rotation; simply releasing the limiting constraint of the pin shaft in the locking mechanism allows the pin shaft to be removed and the dryland blade replaced. Then, by reversing the locking mechanism to re-secure the pin shaft, the dryland blade installation is complete. This design significantly improves the efficiency of dryland blade replacement and enhances the practicality of the equipment. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the rotary tiller component structure of this utility model; Figure 3 This is a schematic diagram of the exploded distribution structure of the rotary tiller component of this utility model; Figure 4 This is a schematic diagram of the pin shaft structure of this utility model; Figure 5 This is a schematic diagram of the constraint hoop structure of this utility model.

[0012] The attached diagram lists the components represented by each number as follows: 1. Rotary shaft; 2. Rotary tiller; 21. Mounting sleeve; 22. Insertion sleeve; 22a. Outer protrusion; 22b. Rotary positioning hole; 23. Dryland blade; 24. Fastener; 25. Pin shaft; 25a. Notch; 26. Push spring; 27. Retaining ring; 28. Constraint hoop; 28a. Insertion part; 28b. Snap-fit ​​part; 3. Chain frame; 4. Support frame; 5. Drive device; 6. Handrail; 7. Anti-collision plate; 8. Outer beam; 81. Upper locking shaft; 9. Support leg; 10. Tension spring; 11. Lower locking shaft. Detailed Implementation

[0013] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0014] like Figure 1-5 As shown, a tillage machine with easy replacement of dryland blades includes a rotating shaft 1 and multiple rotary tillage components 2 disposed on the rotating shaft 1. A drive device 5 is disposed above the rotating shaft 1. The drive device 5 is mounted on a support frame 4. A chain frame 3 for driving the drive device 5 to connect to the rotating shaft 1 is mounted on the bottom surface of the support frame 4. An upwardly extending and inclined handrail 6 is mounted on the support frame 4. A crash plate 7 is disposed on the front of the drive device 5, and the crash plate 7 is mounted on a vertically bent square tube of the support frame 4. The support frame 4 has a support mechanism on its side that corresponds to the front of the drive device 5; Multiple rotary tillers 2 are axially evenly distributed on the rotating shaft 1, and adjacent rotary tillers 2 are circumferentially rotated at a 60° interval. Each rotary tiller 2 includes a mounting sleeve 21, a dryland blade 23, and a fastener 24. The mounting sleeve 21 is mounted on the rotating shaft 1, and the fastener 24 passes through the mounting sleeve 21 and the rotating shaft 1 to secure them together. Multiple dryland blades 23 are provided and are evenly distributed circumferentially around the mounting sleeve 21. The dryland blades 23 are inserted into the insertion sleeve 22. Multiple insertion sleeves 22 are provided and are evenly distributed circumferentially around the outer periphery of the mounting sleeve 21. The insertion sleeve 22 is provided with a locking mechanism to prevent the dryland blades 23 from disengaging.

[0015] As an optional implementation, the locking mechanism includes a pin 25, a push spring 26, and a constraint clamp 28. The pin 25 passes through the circular holes opened in the insertion sleeve 22 and the dryland knife 23. The push spring 26 is sleeved on the pin 25. A retaining ring 27 is slidably sleeved on the pin 25. The push spring 26 is located between the mounting sleeve 21 and the retaining ring 27 and is sleeved on the free end side of the pin 25. This facilitates the insertion of the dryland knife 23 into the insertion sleeve 22, allowing the pin 25 to pass through the insertion sleeve 22 and the dryland knife 23, thus creating a locking state between the dryland knife 23 and the insertion sleeve 22.

[0016] See attached document Figure 5 The constraint hoop 28 is provided with two symmetrical insertion parts 28a, which are symmetrically inserted at both ends of the rotary positioning hole 22b. The rotary positioning hole 22b is opened through the outer protrusion 22a. The upper side of the constraint hoop 28 is provided with a snap-fit ​​part 28b, which is snapped into the recess 25a. The recess 25a is opened on the outer periphery of the pin shaft 25. The snap-fit ​​part 28b on the constraint hoop 28 is in a blocking state with the retaining ring 27, thereby restricting the pin shaft 25 from disengaging from the insertion sleeve 22, and forming a limiting state between the dryland knife 23 and the insertion sleeve 22.

[0017] See attached document Figure 4 The notch 25a is a three-sided vertical cutting edge, and the snap-fit ​​part 28b is snapped into the cutting edge, thereby using the cutting edge to form an embedded state of the snap-fit ​​part 28b on the constraint hoop 28, maintaining the constraint hoop 28 blocking the retaining ring 27.

[0018] See attached document Figure 1 The support mechanism includes a support leg 9 and a tension spring 10. The upper side of the support leg 9 is rotatably mounted on the free end of the outer beam 8. There are two tension springs 10, which are distributed on the symmetrical sides of the support leg 9. The upper and lower sides of the tension spring 10 are respectively fitted with an upper retaining shaft 81 and a lower retaining shaft 11. The upper retaining shaft 81 is fixed to the side of the outer beam 8, and the lower retaining shaft 11 is fixed to the support leg 9. This allows the support leg 9 to have two adjustment states. When it rotates forward and abuts against the inner side of the outer beam 8, it is stretched and limited by the tension spring 10. Alternatively, the support leg 9 can be pulled to rotate towards the handle 6 so that the support leg 9 rotates to be below the support frame 4. At the same time, the tension spring 10 restricts the downward rotation from affecting the rotary tiller 2.

[0019] Furthermore, the support frame 4 is fitted with shielding plates on both sides by screws to shield the rotary tiller 2, thereby shielding the soil clods and stones that fly up when the rotary tiller 2 loosens the soil.

[0020] Using the above structure, firstly, the pin shaft 25 is pushed towards the insertion sleeve 22, thereby causing the constraint clamp 28 to rotate around the locking part 28b as the center, so that the locking part 28b disengages upward from the notch 25a, releasing the limiting state of the constraint clamp 28, and disengaging the locking part 28b of the constraint clamp 28 from the notch 25a of the pin shaft 25. Then, the compression push spring 26 and the retaining ring 27 are separated from the insertion sleeve 22. Next, the pin shaft 25 is pulled out axially, releasing the limiting constraint on the dryland knife 23. Then, the worn dryland knife 23 is removed from the insertion sleeve 22. The new dryland knife 23 is vertically pulled out of the sleeve 22. When installing the new dryland knife 23, align the dryland knife 23 with the sleeve 22 and insert it vertically into place. Then, pass the pin 25 through the corresponding holes in the sleeve 22 and the dryland knife 23. Next, put on the push spring 26 and the retaining ring 27, and rotate the insertion part 28a of the constraint clamp 28 to press the retaining ring 27, so that the locking part 28b aligns with the notch 25a. Then, relying on the push of the counter-push spring, the pin 25 moves, causing the constraint clamp 28 to block the retaining ring 27, thus completing the limiting and fixing of the pin 25. The entire replacement process requires no tools and can be quickly completed manually, significantly improving maintenance efficiency during field operations.

[0021] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. This application is mainly used to protect mechanical devices. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, are implemented according to conventional methods in the field.

Claims

1. A plough for easy replacement of dryland coulters, characterised in that: It includes a rotating shaft (1) and multiple rotary tillers (2) arranged on the rotating shaft (1). A drive device (5) is arranged above the rotating shaft (1). The drive device (5) is mounted on a support frame (4). A chain frame (3) for driving the drive device (5) to connect to the rotating shaft (1) is installed on the bottom surface of the support frame (4). An upwardly inclined handle (6) is installed on the support frame (4). A crash plate (7) is arranged on the front of the drive device (5), and the crash plate (7) is installed on a square tube that is bent vertically on the support frame (4). The support frame (4) is equipped with a support mechanism on its side that corresponds to the front of the drive device (5); Multiple rotary tillers (2) are axially evenly distributed on the rotating shaft (1), and adjacent rotary tillers (2) are circumferentially rotated at a 60° interval. Each rotary tiller (2) includes a mounting sleeve (21), a dryland blade (23), and a fastener (24). The mounting sleeve (21) is mounted on the rotating shaft (1), and the fastener (24) passes through the mounting sleeve (21) and the rotating shaft (1) to fasten them together. Multiple dryland blades (23) are provided and are evenly distributed circumferentially with the mounting sleeve (21) as the center. The dryland blades (23) are inserted into the insertion sleeve (22). Multiple insertion sleeves (22) are provided and are evenly distributed circumferentially on the outer periphery of the mounting sleeve (21). The insertion sleeve (22) is provided with a locking mechanism to restrict the dryland blades (23) from disengaging.

2. A plough according to claim 1, characterized in that: The locking mechanism includes a pin shaft (25), a push spring (26), and a constraint clamp (28). The pin shaft (25) passes through the round hole opened on the plug sleeve (22) and the dry land knife (23). The push spring (26) is sleeved on the pin shaft (25). A retaining ring (27) is slidably sleeved on the pin shaft (25). The push spring (26) is located between the mounting sleeve (21) and the retaining ring (27) and is sleeved on one side of the free end of the pin shaft (25).

3. A plough according to claim 2, wherein: The constraint hoop (28) is provided with two symmetrical insertion parts (28a). The two insertion parts (28a) are symmetrically inserted at both ends of the rotary positioning hole (22b). The rotary positioning hole (22b) is opened through the outer protrusion (22a). The upper side of the constraint hoop (28) is provided with a snap-fit ​​part (28b), and the snap-fit ​​part (28b) is snapped in the recess (25a). The recess (25a) is opened on the outer periphery of the pin shaft (25). The snap-fit ​​part (28b) on the constraint hoop (28) is in a blocking state with the retaining ring (27).

4. A plough according to claim 3, wherein: The notch (25a) is a cutting opening with three perpendicular sides, and the snap-fit ​​part (28b) is snapped into the cutting opening.

5. A plough according to claim 4, wherein: The support mechanism includes a leg (9) and a tension spring (10). The upper side of the leg (9) is rotatably mounted on the free end of the extension beam (8). There are two tension springs (10) distributed on the symmetrical sides of the leg (9). The upper and lower sides of the tension spring (10) are respectively fitted with an upper retaining shaft (81) and a lower retaining shaft (11). The upper retaining shaft (81) is fixed on the side of the extension beam (8), and the lower retaining shaft (11) is fixed on the leg (9).

6. A plough according to claim 5, wherein: Two sides of the support frame (4) are provided with shielding plates for shielding the rotary tiller (2) through screw mounting.

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