阅读说明：本技术 一种可调节刀片耕作深度的旋耕机 (Rotary cultivator capable of adjusting blade tillage depth ) 是由 刘超 刘元正 孟桂平 于 2021-08-03 设计创作，主要内容包括：本发明涉及旋耕机技术领域,具体公开了一种可调节刀片耕作深度的旋耕机；包括机架、减速机和刀轴,刀轴的外圆面上间隔设置有安装块,安装块上开设有刀座插槽,刀座插槽的底壁上设置有轴承,轴承中连接有径向转轴,径向转轴的内端连接有锥形齿轮一,径向转轴的外端圆周面上开设有螺纹槽,刀座插槽中刀片组件,机架的一侧板上设置有电机,电机的输出轴上连接齿盘一,机架的另一侧板上设置有推动装置,推动装置上连接有连接盘,连接盘上转动连接有转动杆,转动杆上连接锥形齿轮二,转动杆的端部连接有齿盘二；本发明公开的旋耕机对旋耕深度的调节过程快速、方便,而且能够对刀轴上所有刀片进行同步调节,在实际使用过程中使用效果优异、实用性强。(The invention relates to the technical field of rotary cultivators, and particularly discloses a rotary cultivator with an adjustable blade tilling depth; the cutter comprises a rack, a speed reducer and a cutter shaft, wherein mounting blocks are arranged on the outer circular surface of the cutter shaft at intervals, a cutter holder slot is formed in each mounting block, a bearing is arranged on the bottom wall of each cutter holder slot, a radial rotating shaft is connected in each bearing, the inner end of each radial rotating shaft is connected with a first conical gear, a threaded groove is formed in the circumferential surface of the outer end of each radial rotating shaft, a cutter blade assembly in each cutter holder slot, a motor is arranged on one side plate of the rack, a first fluted disc is connected to the output shaft of the motor, a pushing device is arranged on the other side plate of the rack, a connecting disc is connected to each pushing device, a rotating rod is rotatably connected to each connecting disc, a second conical gear is connected to each rotating rod, and a second fluted disc is connected to the end part of each rotating rod; the rotary cultivator disclosed by the invention is quick and convenient in the process of adjusting the rotary tillage depth, can synchronously adjust all blades on the cutter shaft, and is excellent in use effect and strong in practicability in the actual use process.)

1. A rotary cultivator capable of adjusting the depth of blade cultivation comprises a rack, a speed reducer and a cutter shaft, and is characterized in that a plurality of mounting blocks are arranged on the outer circumferential surface of the cutter shaft at intervals, a cutter holder slot is formed in each mounting block, a bearing communicated with a hollow inner cavity of the cutter shaft is arranged on the bottom wall of each cutter holder slot, a radial rotating shaft is rotatably connected in each bearing, the inner end of each radial rotating shaft is connected with a first conical gear, a thread groove is formed in the circumferential surface of the outer end of each radial rotating shaft, and a blade assembly matched with the thread groove in each radial rotating shaft is arranged in each cutter holder slot;

the utility model discloses a cutter shaft device, including frame, be provided with the motor on the curb plate of frame, and be connected with the fluted disc I that stretches into arbor cavity inner chamber on the output shaft of motor, be provided with thrust unit on another curb plate of frame, thrust unit's expansion end is connected with the connection pad that stretches into arbor cavity inner chamber, it is connected with the dwang to rotate on the connection pad, and is connected with on the dwang with every conical gear one corresponding conical gear two, the end connection of dwang has the fluted disc two of aligning with fluted disc one.

2. The rotary cultivator of claim 1, wherein the blade assembly comprises a blade holder insert, a blade holder and a crushing blade which are connected in sequence from inside to outside, and the inner end surface of the blade holder insert is provided with a threaded hole matched with the threaded groove on the radial rotating shaft.

3. The rotary tiller of claim 2, wherein the crushing blade is fixedly mounted on the blade holder by two bolts.

4. The rotary tiller capable of adjusting the tilling depth of the blades as claimed in claim 1, wherein the blade shaft is rotatably connected to a speed reducer, and bearing seats connected to hollow end shafts at both ends of the blade shaft are provided on inner sides of two side plates on the frame.

5. The rotary tiller capable of adjusting blade tilling depth according to claim 1, wherein the pushing device is one of a hydraulic cylinder, an air cylinder or an electric push rod.

6. The rotary tiller capable of adjusting blade tilling depth according to claim 1 or 5, wherein the motor and the pushing device are each provided with a protective cover on the outside.

7. The rotary tiller capable of adjusting the tilling depth of the blades according to claim 1, wherein a sliding ring sleeve which is in clearance fit with the rotating rod is arranged at the middle section of the hollow inner cavity of the cutter shaft.

Technical Field

The invention relates to the technical field of rotary cultivators, and particularly discloses a rotary cultivator with an adjustable blade tilling depth.

Background

The rotary cultivator is a cultivator which is matched with a tractor to complete the operations of ploughing and harrowing, and is widely applied due to the characteristics of strong soil crushing capability, flat ground surface after ploughing and the like. When the rotary cultivator is used, the cultivation depth of the land is different due to different crops. The crushing blade of the existing rotary cultivator is fixedly connected with the cutter seats on the cutter shaft through bolts, so that when the soil penetration depth of the crushing blade is adjusted, an operator needs to manually loosen the bolts on all the cutter seats, then the relative height between the crushing blade and the cutter seats is adjusted, and then all the bolts are screwed up for fixing, so that the operation steps are extremely complicated, and the adjusting range of the soil penetration depth of the crushing blade is small. In addition, some rotary cultivators are provided with a related hydraulic lifting device on the tractor to adjust the overall height of the rotary cultivator, so that the rotary tillage depth is adjusted.

The invention with the application number of 201810723567X discloses a tilling depth adjusting device for a rotary cultivator, which comprises a mounting bracket, wherein an L-shaped frame is arranged on the mounting bracket, a rotary cultivating mechanism is movably arranged on the right side above the mounting bracket, a servo motor is arranged on the L-shaped frame, the servo motor is connected with an adjusting mechanism, and the rotary cultivating mechanism is meshed with the adjusting mechanism through a worm gear. The height of the whole rotary cultivator is adjusted through the arrangement of the worm gear mechanism, and although the adjustment of the cultivation depth of the rotary cultivator is theoretically realized, a plurality of technical problems which are difficult to solve are caused. For example, the power source of the rotary cultivator is an engine arranged on a tractor, the output shaft of the engine is generally connected with a transmission shaft of a speed reducer arranged on the rotary cultivator, the cultivation depth is adjusted by lifting the whole rotary cultivator, and the connection part of the output shaft of the engine and the transmission shaft on the speed reducer is also correspondingly changed. In addition, because the blades on the rotary cultivator are not subjected to depth adjustment, when the downward adjustment distance of the whole rotary cultivator is large in the cultivation process, the blade shaft is easily in direct contact with the ground in the cultivation process, and the cultivation process is affected. Therefore, aiming at the defects of the traditional method that the depth of the crushing blade is manually adjusted and the height of the whole rotary tillage frame is adjusted through a lifting mechanism, the invention provides a rotary cultivator which can automatically adjust the depth of the rotary tillage blade in the cutter shaft so as to solve the defects in the prior art.

Disclosure of Invention

The invention aims to overcome the defects that the depth of a crushing blade is adjusted manually and the height of an integral rotary tillage frame is adjusted through a lifting mechanism in the prior art, and provides a rotary cultivator capable of automatically adjusting the depth of a rotary tillage blade in a cutter shaft.

The invention is realized by the following technical scheme:

a rotary cultivator with adjustable blade tillage depth comprises a rack, a speed reducer and a cutter shaft, wherein the rack is formed by welding a left side plate and a right side plate with a rear end plate, the speed reducer is fixedly installed on the rear end plate through bolts or welding, and the middle section of the cutter shaft is rotatably connected with the speed reducer.

The utility model discloses a cutter holder, including blade holder slot, bearing, radial pivot, the outer disc of blade holder slot, the bearing that is linked together with arbor cavity inner chamber is provided with on the diapire of blade holder slot, the rotation is connected with radial pivot in the bearing, the inner of radial pivot is connected with the bevel gear that stretches into arbor cavity inner chamber, and the outer end periphery that leads to in the slot of stretching into of radial pivot has seted up the thread groove, and be provided with in the blade holder slot and radially pivot thread groove matched with blade subassembly.

The automatic cutter is characterized in that a motor is arranged on one side plate of the rack, a first fluted disc stretching into a hollow inner cavity of the cutter shaft is connected to an output shaft of the motor, a pushing device is arranged on the other side plate of the rack, the movable end of the pushing device is connected with a connecting disc stretching into the hollow inner cavity of the cutter shaft, a rotating rod is rotatably connected to the connecting disc through a built-in bearing, a second conical gear corresponding to each first conical gear is connected to the rotating rod, a second fluted disc aligned with the first fluted disc is connected to the end portion of the rotating rod, and two tooth surfaces of the first fluted disc and the second fluted disc are arranged oppositely.

As a further arrangement of the above scheme, the blade assembly comprises a tool apron insert block, a tool apron and a crushing blade which are sequentially connected from inside to outside, and the inner end surface of the tool apron insert block is provided with a threaded hole matched with the threaded groove on the radial rotating shaft; wherein blade holder inserted block and the blade holder slot phase-match on the installation piece, the blade holder welds mutually with the outer terminal surface of blade holder inserted block, and broken blade passes through bolt fixed mounting in the blade holder, and the screw thread groove effect is similar to the lead screw on radial pivot, can realize the position control of blade holder inserted block in the blade holder slot through the mating reaction of screw hole on screw thread groove and the blade holder slot when radial pivot rotates to reach and adjust the rotary tillage degree of depth of broken blade.

As a further arrangement of the above scheme, the crushing blade is fixedly mounted on the cutter holder through two bolts; the fixing mode of the two bolts to the crushing blade is corresponding to that of the existing single bolt, so that the crushing blade is more stable after being installed, and the blade cannot be loosened in the rotary tillage process.

As a further arrangement of the scheme, the cutter shaft is rotationally connected with the speed reducer, and bearing seats connected with hollow end shafts at two ends of the cutter shaft are arranged on the inner side surfaces of two side plates on the rack; the bearing blocks on the two side plates are arranged, so that the two ends of the cutter shaft can be rotationally connected, and the two ends of the cutter shaft can be effectively sealed.

As a further arrangement of the above scheme, the pushing device is one of a hydraulic cylinder, an air cylinder or an electric push rod; the selection of the specific pushing device is determined according to actual conditions, but the pushing device is not limited to the three options.

As a further arrangement of the above scheme, protective covers are arranged outside the motor and the pushing device; the arrangement of the protective cover can effectively protect the motor and the pushing device, and can avoid pollution and damage to the motor and the pushing device in the cultivation process.

As a further arrangement of the scheme, a sliding ring sleeve in clearance fit with the rotating rod is arranged at the middle section of the hollow inner cavity of the cutter shaft; the setting of sliding ring cover can play the supporting effect to it under the prerequisite that does not influence the dwang slip, promote, guarantees that the dwang stable level sets up in the cavity inner chamber of arbor.

When the rotary cultivator disclosed by the invention is used for cultivating different ground surfaces and the cultivating depth needs to be adjusted, an operator can directly control the pushing device to push the rotating rod to the other end along the hollow inner cavity of the cutter shaft, so that the fluted disc II at the end part of the rotating rod is meshed with the fluted disc I, and meanwhile, the bevel gear II on the rotating rod is also meshed with the bevel gear I on the corresponding radial rotating shaft.

Then the motor is controlled to rotate forward or reversely by a certain angle, each radial rotating shaft can rotate in the bearing through meshing transmission between the bevel gears, and the cutter seat insert block can move outwards or inwards along the cutter seat insert slot due to the fact that the cutter seat insert block is under the action between the threaded groove and the threaded hole in the rotating process of the radial rotating shafts, so that the adjusting effect of the soil penetration depth of the crushing blade on the cutter seat is achieved.

And finally, after the blade tillage depth is adjusted, the motor is turned off and the pushing device is reversely driven to reset, and then the engine on the tractor is started to realize the tillage process.

Has the advantages that:

1) when the rotary cultivator is used for adjusting the tilling depth of the blade, an operator does not need to take down the bolts on the blade holder one by one to adjust the mounting depth of the blade, the tilling depth of the blade can be adjusted only by starting the pushing device and the motor in sequence, the whole adjusting process is quick and convenient, all the blades on the cutter shaft can be synchronously adjusted, the adjusting depths of the blades are consistent, and the rotary cultivator has excellent use effect and strong practicability in the actual use process.

2) Compared with the prior art that the whole rotary tillage frame is adjusted in height through the lifting device, the invention has the advantages that the condition that the transmission between the speed reducer and the engine on the tractor is unstable does not exist, the problem that the cutter shaft is directly contacted with the ground in the tillage process when the downward adjustment distance of the whole rotary tillage machine is larger is effectively solved, and the stable tillage process of the whole rotary tillage machine after the rotary tillage depth is adjusted is effectively ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a first angular perspective structure of the present invention;

FIG. 2 is a schematic view of a second angular perspective structure according to the present invention;

FIG. 3 is a schematic perspective view of the frame, the rotating rod, the hydraulic cylinder, etc. of the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 3 according to the present invention;

FIG. 5 is a schematic perspective view of a knife shaft, a knife holder, a crushing blade and the like in the present invention;

FIG. 6 is a schematic perspective view of the knife shaft, end shaft and mounting block of the present invention;

fig. 7 is a partial perspective exploded view of the knife shaft of the present invention.

Wherein:

1-side plate, 2-rear end plate, 3-speed reducer, 301-transmission shaft, 4-cutter shaft, 401-cylindrical inner cavity, 402-end shaft, 5-bearing seat, 6-hydraulic cylinder, 7-connecting disc, 8-rotating rod, 9-first fluted disc, 10-driving motor, 11-second fluted disc, 12-mounting block, 121-tool apron slot, 13-bearing, 14-radial rotating shaft, 141-spiral groove, 15-first conical gear, 16-second conical gear, 17-tool apron block, 171-threaded hole, 18-tool apron, 19-bolt and 20-crushing blade.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", and,

The terms "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like, refer to an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail with reference to the accompanying drawings 1 to 7, in conjunction with the embodiments.

The invention discloses a rotary cultivator capable of automatically adjusting the depth of a rotary blade in a cutter shaft, wherein the main body of the rotary cultivator comprises a frame consisting of two side plates 1 and a rear end plate 2, a speed reducer 3 and a cutter shaft 4, the speed reducer 3 is welded or fixedly connected with the rear end plate 2 through bolts, and the upper end of the speed reducer 3 is connected with a transmission shaft 301 connected with an engine on a tractor (in the figure).

A bearing seat 5 is welded on the inner side faces of the lower ends of the two side plates 1, and a cutter shaft 4 is arranged between the two bearing seats 5 and is rotatably connected with the lower end of the speed reducer 3. A cylindrical inner cavity 401 is formed in the cutter shaft 4, hollow end shafts 402 are connected to two end faces of the cutter shaft 4, the two end shafts 402 are respectively rotatably connected with bearing seats 5 on two side plates 1, and meanwhile the hollow inner cavity of each end shaft 402 is communicated with the cylindrical inner cavity 401 on the cutter shaft 4.

A hydraulic cylinder 6 is fixedly arranged on the outer side surface of the lower end of one side plate 1, and the hydraulic cylinder 6 can also be replaced by an air cylinder or an electric push rod. The piston rod of the hydraulic cylinder 6 penetrates through the side plate 1 and the end shaft 402 to extend into the cylindrical inner cavity 401 of the cutter shaft 4, the inner end of the end shaft 402 is welded with a connecting disc 7 with a built-in bearing, a rotating rod 8 concentrically arranged with the cylindrical inner cavity 401 is rotatably connected onto the connecting disc 7 through the inner bearing, the other end of the rotating rod 8 is connected with a first fluted disc 9, and the outer surface of the first fluted disc 9 is provided with a tooth surface. Meanwhile, in order to ensure that the rotating rod 8 in the cylindrical cavity 401 is stable and horizontal, a sliding ring sleeve (not shown in the figure) in clearance fit with the rotating rod 8 can be welded at the middle section of the cylindrical cavity 401.

A driving motor 10 is fixedly mounted on the outer side surface of the lower end of the other side plate 1, an output shaft of the driving motor 10 penetrates through the side plates and the end shaft 402 and extends into the cylindrical inner cavity 401, a second toothed disc 11 is connected to the inner end of the output shaft of the driving motor 10, and a tooth surface facing the first toothed disc 9 is arranged on the second toothed disc 11. Starting the hydraulic cylinder 6 to extend its piston rod can push the rotating rod 8 to move towards the second toothed disc 11, so that the tooth surfaces on the first toothed disc 9 and the second toothed disc 11 are engaged.

A plurality of installation blocks 12 are welded on the outer circular surface of the cutter shaft 4 at intervals, a cutter holder slot 121 is formed in each installation block 12, a bearing 13 communicated with the cylindrical inner cavity 401 is arranged on the bottom wall of each cutter holder slot 121, a radial rotating shaft 14 is connected in each bearing 13 in a rotating mode, the end portion, extending into the cylindrical inner cavity 401, of each radial rotating shaft 14 is connected with a first bevel gear 15, a second bevel gear 16 corresponding to each first bevel gear 15 is welded on the rotating rod 8, and the radial rotating shafts 14 can rotate along with the rotating rod 8 through the meshing effect between the two bevel gears when the rotating rod 8 rotates.

Meanwhile, a spiral groove 141 is formed on an outer circumferential surface of the radial rotating shaft 14 located in the tool holder slot 121. Each tool apron slot 121 is provided with a tool apron block 17, a threaded hole 171 matched with the radial rotating shaft 14 is formed in the inner end face of the tool apron block 17, a tool apron 18 is welded to the outer end face of the tool apron block 17, and a crushing blade 20 is fixedly mounted in the tool apron 18 through a bolt 19. In order to ensure the stability of the crushing blade 20 when mounted in the specific setting, the crushing blade 20 is stably mounted in the tool apron 18 by means of an inner and an outer bolt.

Finally, in order to prevent the soil from polluting the driving motor 10 and the hydraulic cylinder 6 during the cultivation of the whole rotary tiller, a protective cover (not shown in the figure) is arranged outside the driving motor 10 and the hydraulic cylinder 6.

When the rotary cultivator disclosed by the invention adjusts the rotary tillage depth of the crushing blade on the cutter shaft 4, the piston rod of the rotary cultivator is extended towards the starting hydraulic cylinder 6, thereby pushing the rotating rod 8 to the other end along the cylindrical inner cavity 401, and after pushing a set distance, the first toothed disc 9 at the end of the rotating rod 8 is engaged with the second toothed disc 11, and each first bevel gear 15 on the swivelling levers 8 now meshes with a corresponding second bevel gear 16, then the depth of the crushing blade 20 is adjusted according to the requirement, the driving motor 10 is started to rotate forward or backward for a certain angle, the radial rotating shaft 14 in each tool apron slot 121 synchronously rotates through transmission, and the rotary tillage depth of each crushing blade 20 on the cutter shaft 4 can be synchronously and quickly adjusted through the matching action between the thread groove 141 on the radial rotating shaft 14 and the thread hole 171 on the tool apron block 17.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.