Land leveling harrow and four-wheel riding type mini-tiller

Abstract

The utility model belongs to the technical field of tillage equipment, and particularly relates to a land leveling harrow which comprises a connecting mechanism and a harrow body used for leveling land, the connecting mechanism comprises a fixing frame, a rotating frame and an adjusting assembly, the fixing frame is fixedly connected with the rear end of a four-wheel riding type mini-tiller, the front end of the rotating frame is rotatably installed on the fixing frame, and the adjusting assembly is installed on the rotating frame. The rake body is installed at the rear end of the rotating frame, and the adjusting assembly is used for adjusting the rotating angle of the rotating frame and limiting the rotating angle. The utility model aims to adjust the tillage depth of a harrow body in a tillage mode by connecting a fixed frame with a four-wheel riding type mini-tiller and adjusting the rotating angle of a rotating frame through an adjusting assembly, or switching to a walking mode when the harrow body is separated from the ground; the utility model further particularly relates to a four-wheel riding type mini-tiller, and when the land leveling harrow is adopted to switch different modes, the land leveling harrow does not need to be disassembled and assembled repeatedly.

Description

Technical Field

[0001] The utility model relates to the technical field of tillage equipment, in particular to a land leveling harrow and a four-wheel ride-on micro-tillage machine. Background Art

[0002] Micro-tillers are powered by small diesel or gasoline engines and are widely used in dry land, paddy fields, orchards, etc. in plains, mountainous areas, and hills. Currently, the mainstream micro-tillers on the market are mainly walk-behind micro-tillers. However, walk-behind micro-tillers have high requirements for operators. During the tillage process, the operator needs to hold the armrest steady to overcome the vibration generated by the micro-tiller. Long-term use can easily cause fatigue.

[0003] Therefore, the inventor proposed an invention patent (CN115735455B) for a four-wheeled micro-tillage device. The four-wheeled riding micro-tillage device can switch between multi-speed four-wheel drive travel modes, multiple four-wheel drive tillage modes, or multi-speed two-wheel drive travel modes by setting front and rear gearboxes. The operator can ride on the tillage device to drive, which greatly reduces labor intensity.

[0004] The inventors found during use that there is currently a lack of a leveling tillage implement for use with a four-wheeled riding micro-tillage machine that can level the land in a tillage mode and can also be off the ground in a walking mode. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, one of the purposes of the present invention is to provide a multi-mode land leveling harrow suitable for a four-wheel ride-on micro-tillage machine.

[0006] The technical solutions adopted in this utility model are as follows:

[0007] A leveling harrow comprises a connecting mechanism and a harrow body for leveling the ground. The connecting mechanism comprises a fixed frame, a rotating frame and an adjustment assembly. The fixed frame is fixedly connected to the rear end of a four-wheeled riding micro-tiller. The front end of the rotating frame is rotatably mounted on the fixed frame. The harrow body is mounted on the rear end of the rotating frame. The adjustment assembly is used to adjust the rotation angle of the rotating frame and to limit it.

[0008] Compared with the prior art, the beneficial effects of the present invention are:

[0009] It is connected to a four-wheeled riding micro-tillage machine through a fixed frame, and the rotation angle of the rotating frame is adjusted by an adjustment component, thereby adjusting the tillage depth of the harrow body in the tillage mode, or leaving the ground to switch to the walking mode.

[0010] As the preferred embodiment of the utility model, the adjusting assembly comprises a connecting sleeve and an adjusting rod, the connecting sleeve is fixedly installed on the fixed frame, the connecting sleeve is provided with threads, the adjusting rod is threadedly connected with the connecting sleeve, the lower end of the adjusting rod is hingedly connected with a lifting piece, and the rotating frame is lifted or lowered by the lifting piece when the adjusting rod rotates.

[0011] Beneficial effects: the adjusting assembly is arranged, the rotating frame can be lifted by the lifting piece after the adjusting rod rotates, the rake body can be lifted or lowered as a whole, the whole can be separated from the ground, the four-wheel riding type mini-tiller walking mode can be applicable, and the adjusting rod is screwed, and the adjusting rod can be automatically limited after adjustment.

[0012] As the preferred embodiment of the utility model, the lifting piece comprises a first rod body, a second rod body and a third rod body, the first rod body is transversely rotatably installed on the fixed frame, the second rod body is transversely rotatably installed on the rotating frame, the first rod body and the second rod body are respectively fixedly connected with a first sleeve and a second sleeve, the third rod body passes through the first sleeve and the second sleeve in sequence, the third rod body is provided with a limiting portion, the limiting portion blocks the third rod body from sliding relative to the first sleeve, and the upper end of the third rod body is hingedly connected with the lower end of the adjusting rod.

[0013] Beneficial effects: the adjusting rod is screwed with the connecting sleeve, the height of the adjusting rod changes after the adjusting rod rotates, the third rod body is rotated and driven, the height of the third rod body changes, the third rod body is rotatable about the central axis of the first rod body, the third rod body slides relative to the second sleeve, the rotating frame is lifted or lowered through the second rod body, and height adjustment is realized.

[0014] As the preferred embodiment of the utility model, the limiting portion comprises an upper limiting ring and a lower limiting ring fixed on the third rod body, the upper limiting ring and the lower limiting ring are located at the upper and lower ends of the first sleeve, and bearings are arranged between the upper limiting ring, the lower limiting ring and the first sleeve.

[0015] Beneficial effects: the whole plow is heavy, the bearings are arranged to assist support, the rotating friction is reduced, and the service life is improved.

[0016] As the preferred embodiment of the utility model, the lifting piece further comprises an outer shell, the upper limiting ring supports the top surface of the outer shell, the top surface of the outer shell is provided with a first clamping groove, the third rod body is rotatably installed in the first clamping groove, the side wall of the outer shell is provided with a second clamping groove, and the first rod body is rotatably installed in the second clamping groove.

[0017] Beneficial effect: By setting up the outer shell, a certain shielding and protection effect is played on the internal limit member, and the outer shell follows the third rod body to rotate around the first rod body, and the third rod body rotates in the first slot to play an auxiliary support effect.

[0018] As a preferred embodiment of the present invention, the rear end of the rotating frame is fixedly connected to a mounting piece, the mounting piece is vertically provided with a sliding hole, a sliding plate is passed through the sliding hole, the rake body is fixedly mounted on the lower part of the sliding plate, a plurality of adjustment holes are vertically spaced apart on the sliding plate, the mounting piece is horizontally provided with a first mounting hole, and when the adjustment piece is aligned with the first mounting hole, the sliding plate is fixed by a pin.

[0019] Beneficial effect: by moving the sliding plate up and down and connecting the first mounting hole with different adjustment holes through the latch, the height of the bottom rake body can be adjusted. Combined with the adjustment method of the adjustment component, the device has a larger adjustment range.

[0020] As a preferred embodiment of the present invention, a plurality of threaded holes are opened on one side of the mounting member, the center line of each threaded hole is perpendicular to the center line of the first mounting hole, the plurality of threaded holes are distributed on the upper and lower sides of the first mounting hole, and each of the threaded holes is screwed with a locking screw that is tightened on the sliding plate.

[0021] Beneficial effect: Since the size of the sliding hole is slightly larger than that of the sliding plate, if it is fixed only by a pin, the rotating plate may swing back and forth around the pin. Therefore, by setting multiple locking screws, the rotating plate is tightened, making the harrow body more stable during tillage.

[0022] As a preferred embodiment of the present invention, the upper portion of the rake body and the lower portion of the sliding plate are both integrally formed with a bent portion, and the two bent portions fit together.

[0023] Beneficial effect: The integrally formed bent portions are connected after being fitted together, thereby increasing the structural strength of the rake body and the sliding plate.

[0024] As a preferred embodiment of the present invention, a limiting frame is horizontally provided on the fixing frame, and a plurality of second mounting holes are vertically opened on the limiting frame.

[0025] Beneficial effect: After the four-wheel ride-on micro-tillage machine is installed, the limit frame is arranged horizontally, and the bottom of the limit frame is supported, so that the bolts used for connection are less stressed and the overall structure is more stable.

[0026] The second purpose of the present utility model is to provide a four-wheeled riding micro-tillage machine, which adopts the above-mentioned leveling harrow and does not need to be repeatedly disassembled and assembled when switching different modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a structural schematic view of the land leveling harrow embodiment of the present utility model;

[0028] Figure 2 is a structural schematic view of the adjusting assembly in the land leveling harrow embodiment of the present utility model.

[0029] The reference signs include: fixed frame 1, limiting frame 11, rotating frame 2, adjusting assembly 3, connecting sleeve 31, adjusting rod 32, lifting piece 33, first rod body 331, second rod body 332, third rod body 333, first sleeve 334, second sleeve 335, upper limiting ring 336, lower limiting ring 337, outer shell 338, harrow body 4, mounting piece 5, bolt 51, locking screw 52, sliding plate 53. DETAILED DESCRIPTION

[0030] The typical embodiments embodying the features and advantages of the present utility model will be described in the following description. It should be understood that the present utility model can have various changes on different embodiments, which all do not deviate from the scope of the present utility model, and the description and drawings in essence are used as illustration, not to limit the present utility model.

[0031] In the description of the present application, the terms "first", "second", "one side" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the structure referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0032] Referring to Figure 1 , the land leveling harrow of the present embodiment includes a connecting mechanism and a harrow body 4 for land leveling, the connecting mechanism includes a fixed frame 1, a rotating frame 2 and an adjusting assembly 3, the fixed frame 1 is fixedly connected with the rear end of the four-wheel riding type mini-tiller, the front end of the rotating frame 2 is rotatably installed on the fixed frame 1, the harrow body 4 is installed on the rear end of the rotating frame 2, the adjusting assembly 3 is used for adjusting the rotation angle of the rotating frame 2 and limiting; by connecting the fixed frame 1 with the four-wheel riding type mini-tiller, adjusting the rotation angle of the rotating frame 2 through the adjusting assembly 3, the working depth of the harrow body 4 is adjusted in the working mode, or switched to the walking mode by detaching from the ground.

[0033] Referring to Figure 1 , the limiting frame 11 is transversely arranged on the fixed frame 1, and a plurality of second mounting holes are vertically formed on the limiting frame; by transversely arranging the limiting frame 11, the limiting frame 11 is installed at the rear of the four-wheel riding type mini-tiller, the bottom of the limiting frame 11 is supported, so that the stress of the bolt for connection is smaller, and the overall structure is more stable.

[0034] Referring to Figure 1As shown, the adjusting assembly 3 includes a connecting sleeve 31 and an adjusting rod 32. The connecting sleeve 31 is fixedly mounted on the fixing frame 1. A thread is provided in the connecting sleeve 31. The adjusting rod 32 is threadedly connected to the connecting sleeve 31. The lower end of the adjusting rod 32 is hinged with a lifting piece 33. When the adjusting rod 32 is rotated, the rotating frame 2 is lifted or lowered by the lifting piece 33. By setting the adjusting assembly 3, after rotating the adjusting rod 32, the rotating frame 2 can be lifted by the lifting piece 33, so that the rake body 4 is raised or lowered as a whole, and the whole body can be separated from the ground. It can be applied to the walking mode of the four-wheel riding micro-tiller, and since the adjusting rod 32 is threaded, it can be automatically limited after adjustment.

[0035] Among them, see Figure 2 As shown, the lifting member 33 includes a first rod 331, a second rod 332 and a third rod 333. The first rod 331 is laterally rotatably mounted on the fixed frame 1, and the second rod 332 is laterally rotatably mounted on the rotating frame 2. The first rod 331 and the second rod 332 are respectively fixedly connected with a first sleeve 334 and a second sleeve 335. The third rod 333 passes through the first sleeve 334 and the second sleeve 335 in sequence. A limiting portion is provided on the third rod 333, and the limiting portion prevents the third rod 333 from sliding relative to the first sleeve 334. The upper end of the third rod body 333 is hinged to the lower end of the adjusting rod 32; since the adjusting rod 32 is screwed to the connecting sleeve 31, after the adjusting rod 32 is rotated, the height of the adjusting rod 32 changes, and drives the hinged third rod body 333 to rotate, so that the height of the third rod body 333 changes, and through the arrangement of the first rod body 331, the second rod body 332 and the sleeve, the third rod body 333 will rotate about the central axis of the first rod body 331, the third rod body 333 slides relative to the second sleeve 335, and the rotating frame 2 is lifted or lowered by the second rod body 332, thereby realizing height adjustment.

[0036] Among them, see Figure 2 As shown, the limiting portion includes an upper limiting ring 336 and a lower limiting ring 337 fixed on the third rod body 333, and the upper limiting ring 336 and the lower limiting ring 337 are located at the upper and lower ends of the first sleeve 334, and bearings are provided between the upper limiting ring 336, the lower limiting ring 337 and the first sleeve 334; since the overall tillage tool is heavy, auxiliary support is provided by providing bearings, which reduces rotational friction and improves service life.

[0037] Among them, see Figure 2As shown, the lifting member 33 also includes an outer shell 338, the upper limit ring 336 supports the top surface of the outer shell 338, the top surface of the outer shell 338 is provided with a first slot, the third rod 333 is rotatably installed in the first slot, the side wall of the outer shell 338 is provided with a second slot, the first rod 333 is rotatably installed in the second slot; by setting the outer shell 338, a certain shielding and protection effect is played on the internal limiting member, and the outer shell 338 follows the third rod 333 to rotate around the first rod 331, and the third rod 333 rotates in the first slot, which plays an auxiliary support effect.

[0038] Among them, see Figure 1 As shown, the rear end of the rotating frame 2 is fixedly connected with a mounting member 5, and a sliding hole is vertically opened on the mounting member 5, and a sliding plate 53 is passed through the sliding hole. The rake body 4 is fixedly mounted on the lower part of the sliding plate 53, and a plurality of adjustment holes are vertically spaced on the sliding plate 53. The mounting member 5 is horizontally opened with a first mounting hole. When the corresponding adjustment member is aligned with the first mounting hole, the sliding plate 53 is fixed by the pin 51; the sliding plate 53 is moved up and down, and the first mounting hole is connected to different adjustment holes by the pin 51, so that the height of the bottom rake body 4 can be adjusted. Combined with the adjustment method of the adjustment component 3, the device has a larger adjustment range.

[0039] Among them, see Figure 1 As shown, a plurality of threaded holes are provided on one side of the mounting member 5, and the center line of each threaded hole is perpendicular to the center line of the first mounting hole. The plurality of threaded holes are distributed on the upper and lower sides of the first mounting hole, and each threaded hole is screwed with a locking screw 52 that is tightened on the sliding plate 53. Since the size of the sliding hole is slightly larger than that of the sliding plate 53, if it is fixed only by the latch 51, the rotating plate may rock back and forth around the latch 51. Therefore, by providing a plurality of locking screws 52, the rotating plate is tightened, so that the rake body 4 is more stable during tillage.

[0040] Among them, see Figure 1 As shown, the upper portion of the rake body 4 and the lower portion of the sliding plate 53 are integrally formed with a bent portion, and the two bent portions fit together; the structural strength of the rake body 4 and the sliding plate 53 is increased by the integrally formed bent portions and the fit and connection.

[0041] The four-wheeled riding micro-tillage machine of this embodiment uses the above-mentioned land harrow, and when switching between different modes, there is no need to repeatedly disassemble and assemble the land harrow.

[0042] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A leveling harrow, characterized in that: Applied to four-wheel riding micro tillage machine, It includes a connecting mechanism and a rake body for leveling the ground. The connecting mechanism includes a fixed frame, a rotating frame and an adjustment component. The fixed frame is fixedly connected to the rear end of the four-wheel riding micro-tiller. The front end of the rotating frame is rotatably mounted on the fixed frame. The rake body is mounted on the rear end of the rotating frame. The adjustment component is used to adjust the rotation angle of the rotating frame and limit it.

2. The land rake according to claim 1, characterized in that: The adjustment assembly includes a connecting sleeve and an adjusting rod. The connecting sleeve is fixedly mounted on a fixed frame. A thread is provided in the connecting sleeve. The adjusting rod is threadedly connected to the connecting sleeve. A lifting piece is hinged at the lower end of the adjusting rod. When the adjusting rod rotates, the rotating frame is lifted or lowered by the lifting piece.

3. The leveling harrow according to claim 2, characterized in that: The lifting part includes a first rod body, a second rod body and a third rod body. The first rod body is installed on a fixed frame for transverse rotation. The second rod body is installed on a rotating frame for transverse rotation. The first rod body and the second rod body are fixedly connected with a first sleeve and a second sleeve respectively. The third rod body passes through the first sleeve and the second sleeve in sequence. A limiting part is provided on the third rod body. The limiting part prevents the third rod body from sliding relative to the first sleeve. The upper end of the third rod body is hinged to the lower end of the adjusting rod.

4. The land leveling harrow according to claim 3, characterized in that: The limiting portion includes an upper limiting ring and a lower limiting ring fixed on the third rod body. The upper limiting ring and the lower limiting ring are located at the upper and lower ends of the first sleeve. Bearings are provided between the upper limiting ring, the lower limiting ring and the first sleeve.

5. The land leveling harrow according to claim 4, characterized in that: The lifting member also includes an outer shell, the upper limit ring supports the top surface of the outer shell, the top surface of the outer shell is provided with a first slot, the third rod is rotatably installed in the first slot, the side wall of the outer shell is provided with a second slot, and the first rod is rotatably installed in the second slot.

6. The land leveling harrow according to claim 1, characterized in that: The rear end of the rotating frame is fixedly connected to a mounting piece, the mounting piece is vertically provided with a sliding hole, a sliding plate is passed through the sliding hole, the rake body is fixedly mounted on the lower part of the sliding plate, a plurality of adjustment holes are vertically spaced apart on the sliding plate, the mounting piece is horizontally provided with a first mounting hole, and when the corresponding adjustment component is aligned with the first mounting hole, the sliding plate is fixed by a pin.

7. The land rake according to claim 6, characterized in that: A plurality of threaded holes are provided on one side of the mounting member, the center line of each threaded hole is perpendicular to the center line of the first mounting hole, and the plurality of threaded holes are distributed on the upper and lower sides of the first mounting hole, and each threaded hole is screwed with a locking screw that is tightened on the sliding plate.

8. The land leveling harrow according to claim 6, characterized in that: The upper part of the rake body and the lower part of the sliding plate are both integrally formed with a bent portion, and the two bent portions are fitted together.

9. The leveling harrow according to claim 1, characterized in that: A limit frame is horizontally arranged on the fixing frame, and a plurality of second mounting holes are vertically opened on the limit frame.

10. A four-wheeled riding micro-tillage machine, characterized by: A land leveling harrow according to any one of claims 1 to 9 is used.

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