Claims:1. A base cutting assembly for a crop harvester comprising,
• a cutting wheel assembly consisting of at least one cutting wheel having at least one cutting blade;
• a bracket fitted on said cutting wheel assembly;
• a power source fitted within said bracket for driving said at least one cutting wheel;
• a support arm extending from said bracket;
• a guide bush configured at the free end of said support arm;
• a guide pipe displaceably fitted within said guide bush, enabling said guide bush, said support arm, said bracket, said power source and said cutting wheel assembly to be reciprocated in a controlled manner on said guide pipe;
• at least one guide bush pin fitted within said guide bush;
• a slit formed on the body of said guide pipe for accommodating said guide bush pin for restricting the guided reciprocating motion of said guide bush, said support arm, said bracket, said power source and said cutting wheel assembly on said guide pipe;
• a displacing mechanism for angular displacement and/or reciprocating motion of said guide pipe and thereby causing angular displacement and/or reciprocating motion of said cutting wheel assembly relative to said guide pipe; and
• a control mechanism for controlling the reciprocating motion and/or angular displacement of said cutting wheel assembly.

2. The base cutter assembly as claimed in claim 1, wherein the body of said bracket has a groove where a pin is fitted, which is configured to facilitate the displacement of said cutting wheel to manually adjust the angle of said cutting wheel with respect to the crop by moving the pin along the length of the groove.

3. The base cutter assembly as claimed in claim 2, wherein said displacement of said cutting wheel to adjust the angle of said cutting wheel with respect to the crop, is imparted via said power source.

4. The base cutter assembly as claimed in claim 1, which includes an intermediary bush provided between said guide bush and said guide pipe to reduce the friction generated between said guide bush and said guide pipe.

5. The base cutter assembly as claimed in claim 1, wherein said displacing mechanism includes a first actuator disposed in proximity of said guide pipe, configured to enable said reciprocating motion of said guide bush, said support arm, said bracket, said power source and said cutting wheel assembly on said guide pipe.

6. The base cutter assembly as claimed in claim 1, wherein said displacing mechanism includes a second actuator configured to angularly displace said guide pipe.

7. The base cutter assembly as claimed in claim 5 or claim 6, wherein said first and second actuators and said power source are selected from the group consisting of electric motors, wind-up motors, rotary actuators, spur gears, hydraulic system and pneumatic system.

8. The base cutter assembly as claimed in claim 6, wherein said displacing mechanism includes at least one lever arm that connects said second actuator with said guide pipe to transmit the motion from said second actuator to said guide pipe.

9. The base cutter as claimed in claim 1 or claim5 or claim 6, wherein said control mechanism includes at least one joystick and at least one controller, configured to send signals to at least one of said power source and said first and second actuators to control the movement of said cutting wheel assembly and said guide pipe.

10. The base cutter assembly as claimed in claim 4, wherein said intermediary bush is made of a material that is selected from the group consisting of nylon, acetal, polycarbonate and polyphenylene sulphide. , Description:FIELD
The present disclosure relates to assembly of a cutter used for cutting crops.
BACKGROUND
Crop Harvesting is the process of gathering mature crops from the fields. A crop harvester used for gathering crops comprises a cutter(s) to cut the crops before gathering. Conventionally, the cutters used to cut the crops are handled manually and therefore, cutting a large amount of crops takes a long time. The conventional cutting operation not only needed a long time but is not cost effective as a large number of workers are required to cut the crops, and even then the final amount of harvested crops is low. Also, in conventional mechanized crop harvesters, the cutters are fixed at one location and are not displaceable and this results in wastage of crops as many crops are not cut by the cutter because the crops are not located in the path of the cutter.
Thus, there is a need for developing a cutter assembly for a crop harvester that can reduce the extent of manual work required for cutting standing crops that are to be harvested and also helps in controlling the movement of the cutter.
OBJECTS
Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows:
It is an object of the present disclosure to ameliorate one or more problems of the prior art or to at least provide a useful alternative.
An object of the present disclosure is to provide a cutter assembly that reduces human effort.
Another object of the present disclosure is to provide a cutter assembly that performs in an optimal manner from time and cost perspective.
Yet another object of the present disclosure is to provide a cutter assembly that has a simple structure and is easy to operate.
Still another object of the present disclosure is to provide a cutter assembly that exhibits controlled movement.
Still another object of the present disclosure is to provide a cutter assembly that cuts various types of crops.
Other objects and advantages of the present disclosure will be more apparent from the following description when read in conjunction with the accompanying drawing, which are not intended to limit the scope of the present disclosure.
SUMMARY
A cutter assembly for a crop harvester, wherein the cutter assembly comprises a cutting wheel assembly that has at least one cutting wheel having at least one cutting blade, a bracket fitted on the cutting wheel assembly, a power source fitted within the bracket for driving the at least one cutting wheel, a support arm extending from the bracket, a guide bush configured at the free end of the support arm, a guide pipe displaceably fitted within the guide bush, enabling the guide bush to be reciprocated in a controlled manner on the guide pipe, at least one guide bush pin fitted within the guide bush, and a slit formed on the body of the guide pipe for accommodating the guide bush pin for restricting the guided reciprocating motion of the guide bush on the guide pipe. The cutter assembly further comprises a displacing mechanism that provides angular displacement and/or reciprocating motion to said guide bush and thereby causes angular displacement and/or reciprocating motion of said cutting wheel assembly relative to said guide pipe, and a control mechanism for controlling the reciprocating motion and/or angular displacement of the cutting wheel assembly.

BRIEF DESCRIPTION
A cutter assembly of the present disclosure will now be described with the help of an accompanying drawing, in which:
Fig. 1 illustrates an isometric view of the cutter assembly, in accordance with an embodiment of the present disclosure; and
Fig. 2 illustrates a block diagram representing a control mechanism of the cutter assembly of Fig. 1.
DETAILED DESCRIPTION
A cutter assembly in accordance with an embodiment of the present disclosure will now be described with reference to the embodiments, which do not limit the scope and ambit of the disclosure. The description provided is purely by way of example and illustration. The embodiment herein, the various features, and advantageous details thereof are explained with reference to the non-limiting embodiments in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced, and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
Fig. 1 depicts a cutter assembly 100 comprising, a body frame 105, at least one arm 107, at least one guide pipe bush 110, a guide pipe 115, a displacing mechanism consisting of a first actuator 120, a lever arm 125 and a second actuator 130, a guide bush 135, an intermediary bush 140, a guide bush pin 145, a slit 150, a support arm 155, a bracket 160, a power source 165, a cutting wheel assembly consisting of at least one cutting wheel 170, and at least one cutting blade 175 on each of the cutting wheel 170. The cutter assembly 100 of the present disclosure comprises two guide pipe bushes that are individually referred as a first guide pipe bush 110A and a second guide pipe bush 110B, and two arms 107 that are individually referred as a first arm 107A and a second arm 107B. The cutter assembly 100 further comprises a control mechanism to provide controlled movement to the cutting wheel assembly (not shown exclusively in the figure) and the guide pipe 115.
In fig.1, the body frame 105 of the cutter assembly 100 is a rigid structure made of a high strength material, configured to provide support to other components of the cutter assembly 100 and further configured to neutralize the high intensity vibrations caused during the cutting operation of the cutting wheel 170. The first arm 107A and the second arm 107B are extended from the body frame 105. In one embodiment of the present disclosure, the first and the second arm 107A, 107B can be an integral part of the body frame 105. The first guide pipe bush 110A and the second guide pipe bush 110B are removably attached to the free end of the first and the second arm 107A, 107B respectively, such that the first and the second guide pipe bush 110A, 110B are neither displaceable nor rotatable. In another embodiment, the first and the second guide pipe bush 110A, 110B can be integrally connected to the first and the second arm 107A, 107B respectively. The first and the second guide pipe bush 110A, 110B are configured to rotatably receive the guide pipe 115 such that a first end of the guide pipe 115 is enclosed within the first guide pipe bush 110A and the second end of the guide pipe 115 passes through the second guide pipe bush 110B providing an extended free end of the guide pipe 115.
The guide bush 135 is fitted on the guide pipe 115. The guide bush 135 of the cutter assembly 100 is displaceable on the body of the guide pipe 115, which guides the reciprocating motion of the guide bush 135 on the guide pipe 115 under the influence of the first actuator 120. The guide bush pin 145 is fitted within the guide bush 135 and the slit 150 is formed on the body of the guide pipe 115, wherein the slit 150 is configured to accommodate the guide bush pin 145. The slit 150 is further configured to restrict the guided reciprocating motion of the guide bush 135 on the guide pipe 115 along the length of the slit 150. The guide bush 135 is reciprocated in a controlled manner on the guide pipe 115 and can be controlled by the control mechanism 200 (shown in figure 2). The first actuator 120 is disposed in the proximity of the first end of the guide pipe 115 and connects with the guide bush pin 145 to facilitate the controlled reciprocating motion of the guide bush 135 on the guide pipe 115. The guide bush pin 145 is made of a material, which comprises following physical properties: a) high strength, b) high durability, and c) high wear and tear resistant. In between the guide bush 135 and the guide pipe 115, the intermediary bush 140 is provided, which is configured to reduce the friction generated between the guide bush 135 and the guide pipe 115 during the reciprocating motion of the guide bush 135. In one embodiment, the intermediary bush 140 is made of a material that may be selected from the group consisting of nylon, acetal, polycarbonate and polyphenylene sulphide. In another embodiment, a bush similar to the intermediary bush 140 may be provided between the first guide pipe bush 110A and the guide pipe 115 and/or between the second guide pipe bush 110B and the guide pipe 115.
The second actuator 130 of the displacing mechanism of the cutter assembly 100 is rotatably coupled with the extended free end of the guide pipe 115 via the lever arm 125. The second actuator 130 and the lever arm 125 are configured to facilitate a controlled angular displacement of the guide pipe 115. In one embodiment, the second actuator 130 and the lever arm 125 together, may facilitate a 90 degree angular displacement of the guide pipe 115. The free end of the second actuator 130 is connected to the body frame 105, which provides support to the second actuator 130. The intermediary bush 140 is also configured to reduce the friction generated between the guide bush 135 and the guide pipe 115 during the angular displacement of the guide pipe 115. In an embodiment, the first and the second actuator 120, 130 may be selected from the group consisting of electric motors, wind-up motors, rotary actuators, spur gears, hydraulic system and pneumatic system.
The support arm 155 extends outwardly from the guide bush 135. The bracket 160 is removably attached on the free end of the support arm 155 and is configured to couple the support arm 155 with the power source 165. The power source 165 is fitted within the bracket 160 and is removably connected to the cutting wheel 170 of the cutting wheel assembly. The cutting wheel assembly also includes the cutting blades 175, which are fitted on the cutting wheel 170, wherein the cutting blades 175 are configured to cut the crops. The power source 165 is configured to rotate the cutting wheel 170, thereby rotating the cutting blades 175 at a controlled speed. In one embodiment, the body of the bracket 160 has a groove where a pin is fitted, which may be configured to facilitate the angular displacement of the cutting wheel 170 to manually adjusting the angle of the cutting wheel 170 with respect to the crop by moving the pin along the length of the groove. In another embodiment, the power source 165 may be selected from the group consisting of electric motors, wind-up motors, rotary actuators, spur gears, hydraulic system and pneumatic system.
The angular displacement of the guide bush 135 facilitated by the second actuator 130 via the guide pipe 115 and the reciprocating motion of the guide bush 135 facilitated by the first actuator 120, results in the angular displacement and the reciprocation motion of the support arm 155, the bracket 160, the power source 165, and the cutting wheel 170 in accordance with the guide bush 135.
Fig.2 depicts a block diagram of the control mechanism 200 comprising at least one joystick 205, a first controller 210, a second controller 215, the power source 165 and the first and the second actuators 120,130, wherein the control mechanism 200 is configured to send signals to the power source 165 and to the first and the second actuators 120,130 of the cutter assembly 100, to control the movement of the cutting wheel assembly and the guide pipe 115. The joystick 205 is manually controlled and is used to pass a signal to the first controller 210. The first controller 210 then converts the signal and passes the converted signal to the second controller 215, which is attached to the cutter assembly 100. The second controller 215 then splits the converted signal and sends the appropriate signal to the first actuator 120, the second actuator 130 and the power source 165. The control mechanism 200 partially automates the function of the cutter assembly 100 for a crop harvester and thus reduces human effort to a large extent. The control mechanism 200, the displacing mechanism and the cutting wheel assembly together help the cutter assembly 100 to perform in an optimal manner from time and cost prospective. The cutter assembly 100 has a simple structure and is easy to operate, thereby reducing the manufacturing and operating cost of the cutter assembly 100. The cutting wheel assembly of the cutter assembly 100 can be used to cut various types of crops.
While considerable emphasis has been placed herein on the components and component parts of the preferred embodiments, it will be appreciated that many embodiments can be made and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other changes in the preferred embodiment as well as other embodiments of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation.

TECHNICAL ADVANCES AND ECONOMICAL SIGNIFICANCE
The cutter assembly, in accordance with the present disclosure described herein above has several technical and/or economic advantages including but not limited to the realization of a cutter assembly that:
? reduces human effort;
? performs in an optimal manner from time and cost prospective;
? has a simple structure and is easy to operate;
? exhibits controlled movement; and
? cuts various types of crops.
Throughout this specification the word “comprise”, or variations such as “comprises” or “comprising”, will be understood to imply the inclusion of a stated element, integer or step, or group of elements, integers or steps, but not the exclusion of any other element, integer or step, or group of elements, integers or steps.
The use of the expression “at least” or “at least one” suggests the use of one or more elements or mixtures or quantities, as the use may be in the embodiment of the disclosure to achieve one or more of the desired objects or results.
Any discussion of documents, acts, materials, devices, articles or the like that has been included in this specification is solely for the purpose of providing a context for the disclosure. It is not to be taken as an admission that any or all of these matters form part of the prior art base or were common general knowledge in the field relevant to the disclosure, as it existed anywhere before the priority date of this application. The numerical value mentioned for the various physical parameters, dimensions or quantities are only approximations and it is envisaged that the values higher/lower than the numerical values assigned to the parameters, dimensions or quantities fall within the scope of the invention, unless there is a statement in the specification specific to the contrary.
While considerable emphasis has been placed herein on the specific features of the preferred embodiment, it will be appreciated that many additional features can be added and that many changes can be made in the preferred embodiment without departing from the principles of the invention. These and other changes in the preferred embodiment of the invention will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation.