KR100740864B1 - Power trans device by flexible shaft in agricultural filds - Google Patents

Abstract

The present invention provides a power transmission device structure for transmitting power to a work machine mounted on an agricultural machine such as a tractor or tiller, the distributor comprising: a distributor for distributing rotational power of the power shaft provided by the power source to a plurality of output shafts; A flexible shaft assembly having one end of the flexible shaft connected to the output shaft, and the other end of the flexible shaft provided with a connecting shaft connected to the drive shaft; A shaft mount having a connecting means for connecting the drive shaft connecting means of the flexible shaft assembly and a supporting means for supporting the drive shaft, wherein the rotational power of the power shaft is distributed to the plurality of output shafts by the distributor, and the output shaft of the distributor And the shaft mount mounted to the driving unit of the agricultural work machine is connected by the flexible shaft member to transfer power from a power source to the agricultural work machine.

Agricultural implement, power train, flexible shaft

Description

Power transmission device structure of agricultural work machine using flexible shaft {POWER TRANS DEVICE BY FLEXIBLE SHAFT IN AGRICULTURAL FILDS}             

1 is a structural diagram of a power transmission device according to the present invention

Figure 2 is an embodiment of a flexible shaft assembly according to the present invention

3 is a structural diagram of a stopper installed in a socket;

4 is an internal structure diagram of a dispenser

Figure 5 is another embodiment of the dispenser

Figure 6a is a state in which the present invention is applied to the compost spreader

Figure 6b is a block diagram of a conventional manure spreader

7 is a state in which the present invention is applied to the rotary working machine and the fertilizer spreader

* Description of the major symbols

100. Flexible shaft assembly 110. Flexible shaft 111. Outer skin

112.Inner shaft 120.Power shaft connection 121.Socket

122.Rotary stop 123.Stopper

130.Drive shaft connection 131.Plug 132.Release prevention ring

200. Shaft Mount 210. Flexible Shaft Support 211. Stopper

220.Drive shaft support 230.Frame attachment

400. Splitter 410. Input shaft 420. Output shaft

The present invention relates to a structure of a power transmission device for transmitting power to a work machine mounted on an agricultural machine such as a tractor or a tiller, and more specifically, to distribute a plurality of power shafts of an agricultural machine and to use a flexible shaft structure for the distributed power. The present invention relates to a power transmission device structure capable of providing power to various work tools by replacing power connection devices such as hydraulic pressure, belts, and chains by providing them to a corresponding work machine.

Agricultural machinery such as tractors, tillers, and ride managers can be used to attach or mount various types of work machines. In general, these work machines are powered by agricultural machinery (hereinafter referred to as agricultural machinery) such as tractors, tillers, and ride managers without self-power, and have a structure in which power transmission devices are connected together when mounted on agricultural machinery. .

Typically, the structure of the power train of agricultural machinery and agricultural work machines can be divided into mechanical and hydraulic.

Mechanical type is a structure that directly connects the power shaft (PTO shaft) of agricultural machinery and the driving shaft of work machine to the shaft or indirectly by belt or chain, etc.The power transmission is mechanical, so power transmission is sure and delivers great power. It has the advantage of accurately matching the speed ratio between the power shaft and the drive shaft. However, the connection structure of shafts, bearings and joints is complicated and expensive, and the power loss due to the resistance of the shaft itself is large, and the rotating element is exposed. Rotating has a high risk of safety accidents.

The hydraulic type is applied to the structure that drives the work machine by using the hydraulic motor. The hydraulic unit provided in the agricultural machine and the hydraulic motor for driving are connected to each other by a flexible hose. It can be used only in the case of a tractor with a separate hydraulic unit, there is a disadvantage that the use is limited when there is no hydraulic unit, such as a tiller. In the case of a tractor equipped with a hydraulic unit, the generated hydraulic pressure is designed to obtain a hydraulic pressure suitable for intermittent linear motion like a cylinder. In the case of a mechanism that obtains rotational power by continuously circulating hydraulic pressure such as a hydraulic motor, Hydraulic system failures such as oil burnout and thread wear are not frequent and the service life is not long, and there are many problems due to the use of output reduction or uneven rotation speed due to heat generation and inaccurate control.

Other power connection method is to supply electricity generated by the self-generator installed in agricultural machinery to D / C motor to drive it, but it does not have high output and efficiency is low. Due to such concerns, the utility is poor.

Due to the characteristics of power transmission, mechanical power connection is mainly used for agricultural work machines such as rotary work machines, and free power connection structure is used for driving non-loaded devices such as rotary blades of fertilizer spreaders. Due to its advantages, hydraulic type is widely used, and mechanical and hydraulic power transmission methods are used in the case of multiple operations such as rotary work, fertilizer spraying, rotary work and seeding work, but the power transmission of the mechanical and hydraulic power as described above Due to the problems of the device, the use of power is not efficient, the burnout of the apparatus is severe, and there is a problem of lowering the durability of the agricultural machinery itself as a power source.

For example, as shown in Figure 6b, the hopper 502 is installed on the upper portion of the L-shaped frame 501, the conveyor belt ( 503 is installed so that the compost in the hopper is transported to the rear, and a spreading fan 504 is installed at the end of the conveyor belt to disperse the compost falling. Accordingly, the compost spreader includes a conveyor drive and a spreading fan drive in independent forms, each of which is configured to receive power from a tractor that is a power source. Each of the above driving devices can all be driven using a hydraulic motor, but a conventional tractor is provided with only a single hydraulic port, which can not be driven simultaneously. In this case, each of the hydraulic motors can be driven by using a separate hydraulic distributor, but the hydraulic unit of the tractor is an auxiliary device because the output is not high, it is difficult to obtain an output capable of driving two hydraulic motors at the same time. Thus, as shown in most of the manure abandonment, the spreading fan uses a connecting shaft 505 'connected to the tractor's PTO, a long shaft 506 and a two-way gearbox 507 connected to the connecting shaft. Drive, the conveyor 503 is forced to use the method of driving by the hydraulic pressure of the tractor using the hydraulic motor 508. Therefore, such a power train structure for driving a spreading fan uses a long shaft 506 which has its own weight, and an exposed connection shaft 505 'for the safety of the operator. Due to the vibration caused by the rotation, the wear of the internal gear element of the two-way gear box 507 connected to the bearing element and the spreading fan shaft is severe, there is a problem that the risk of safety accidents and the like increases as the rotating element is exposed.

In addition to agricultural work machines that require two independent drive elements to be driven simultaneously on one work machine, such as manure spreaders, in the case of work machines that perform complex operations such as rotary and fertilizer spreaders, rotary and planters, they are connected to agricultural machines such as tractors and tillers. This had to be done, and each time had the above-mentioned problems with the power connection structure as mentioned above.

For example, if a fertilizer spreader is mounted on a rotary work machine for simultaneous rotary operation and fertilizer spraying, the structure of the power train connects the tractor's power shaft (PTO shaft) to the rotary shaft of the rotary work machine as a connecting shaft. In addition, the spreading fan of the fertilizer spreader connects the hydraulic motor to the spreading fan shaft due to the complexity of the power connection, the hydraulic motor is used by the hydraulic pressure of the tractor. Therefore, the multi-tasks such as the rotary work and the fertilizer spraying work are limited to the tractor work machine equipped with hydraulic pressure due to the limitation of the power transmission structure. There is an impossible problem, and even in the case of a tractor, the hydraulic power is not suitable for driving the spreading fan, and it is accompanied with all the problems of the hydraulic power train structure such as output reduction due to heat generation.

In addition, since the power connection structure by the existing shaft is only linearly connected, a very complex power connection structure may be required depending on the position of the driving device, or a separate prime mover may be used because power connection is impossible. .

In the present invention, in providing power required for driving various work machines used in a tractor or tiller, it is possible to simultaneously drive several work machines by a power connection structure by a mechanical method, and cope with a power connection structure by hydraulic pressure. In addition, the connection of auxiliary power as well as the connection of the main power is easy, and the purpose of the power transmission device of the agricultural work machine structure that can be connected freely regardless of the position or direction of the drive shaft.

To this end, the present invention includes a distributor for distributing the rotational power of the power shaft provided by the power source to a plurality of output shaft; A flexible shaft assembly having one end of the flexible shaft connected to the output shaft, and the other end of the flexible shaft provided with a connecting shaft connected to the drive shaft; A shaft mount having a connecting means for connecting the drive shaft connecting means of the flexible shaft assembly and a supporting means for supporting the drive shaft, wherein the rotational power of the power shaft is distributed to the plurality of output shafts by the distributor, and the output shaft of the distributor A shaft mount mounted on a drive unit of an agricultural work machine is connected by a flexible shaft assembly to present a power transmission structure configured to transfer power from a power source to the agricultural work machine.

The distributor may be implemented in a form attached to an agricultural machine, and as an independent structure in the body so as to have a single input shaft in the form of a socket or plug on the body and a plurality of output shafts having respective rotation ratios in the form of sockets or plugs. In the gear arrangement, the outside of the body can be made of a configuration that installs the attachment for attaching to the agricultural work machine.

The flexible shaft assembly is composed of a flexible shaft, an output shaft (power shaft) connecting means formed on both ends of the flexible shaft, and a driving shaft connecting means, and the connecting means with the output shaft is coupled to the inner shaft end according to the shape of the output shaft. The outer covering portion of the inner shaft end may be made of a structure in which the rotation preventing mechanism is coupled, the connecting means with the drive shaft may be made of a structure in which the means for preventing the separation from the plug or socket coupled state according to the shape of the drive shaft. .

The shaft mount is a structure in which a flexible shaft coupling portion is formed in which one end of the flexible shaft driving part is connected and fixed. The shaft mount is separated from the driving device of the agricultural work machine and supports the shaft (drive shaft) drawn out from the driving device so as to be in contact with the flexible shaft inside. It may be implemented in a structure, the shaft mount and the driving device of the agricultural work machine may be integrally configured to be coupled to the drive shaft connecting portion of the flexible shaft coupled to the flexible shaft coupling portion exposed to the outside may be implemented in a structure to make a power connection.                         

The power transmission device structure of the agricultural work machine has one end of the flexible shaft connected to the drive shaft of the agricultural work machine inside the shaft mount, the other end of the flexible shaft connected to the power shaft (output shaft) of the agricultural machine, and prevents the rotation of the outer covering part in the connected state. It includes a rotation preventing means to prevent the separation of the flexible shaft in the connected state and prevents the separation of the flexible shaft by the flexible shaft having the characteristics of free power connection without regard to the direction and position of the drive shaft of the agricultural work machine. In the case of using a distribution gear, it is possible to mechanically connect the power connection with a large load and the auxiliary power with a small load.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Figure 1 illustrates the basic configuration of the present invention for explaining the embodiment applied to the tractor as a agricultural machinery as a power source, the power from the flexible shaft assembly 100, the shaft mount 200 and the power source It consists of a distributor 400 for distributing to a plurality of output shafts.

As shown in FIG. 2, the flexible shaft assembly includes a flexible shaft 110, an output shaft connecting portion 120, and a driving shaft coupling portion 130.

Flexible shaft 110 is made of a flexible shaft consisting of a spring body portion 112a and a shaft 112b coupled to both ends of the flexible tube constituting the outer covering 111 as a generally known element is flexible It is an element that allows the internal axis to rotate even in a bent state.

The output shaft connecting portion 120 may be configured in the form of a socket as a part coupled to a power shaft (PTO shaft) 505 of an agricultural machine such as a tractor or a cultivator, or an output shaft of a distributor connected to the power shaft, and a plug or spline structure The embodiment shown as being able to be configured as is an embodiment in which the output shaft connecting portion is configured in the form of a socket, as the anti-rotation hole 122 is coupled to the socket 121 and the outer covering portion coupled to the inner shaft 112 end of the flexible shaft. Is done.

The socket 121 is a component that is fitted and coupled to the power shaft 505 made of a spline structure is coupled to the inner shaft end of the flexible shaft, the stopper 123 therein so as to be easily removable in one-touch form with respect to the power shaft Is installed.

Figure 3 shows an embodiment of the stopper to form a pinhole 123a to pass through a portion of the spline groove 121a formed in the socket 121 at a right angle, the pinhole is subjected to the spring force of the spring 123b The pin 123c is installed to protrude to one side, and a groove 123d is formed inside the pin so that the groove is located in the spline groove when the projecting pin is pressed, and the power shaft can freely move in and the power shaft is inserted. When the pin is released in the closed state, the pin is caught in the groove formed in the power shaft, and thus the detachment of the socket is prevented, and thus the flexible shaft can be detachably attached to the power shaft.

The anti-rotation device 122 is for preventing the outer shell of the outer shell of the flexible shaft from rotating when the inner shaft of the flexible shaft rotates. Therefore, the anti-rotation device 122 can be implemented in a simple structure that binds the outer sheath of the flexible shaft to one end of the wire and the other end of the wire to the surrounding fixing portion, and wraps the outer sheath as shown in the embodiment. The ring 122a is covered, and the chain 122b is connected to the ring, and the hook ring 122c is coupled to the end of the chain to be hooked around the power shaft and fixed.

The output shaft connecting portion 120 shown in the embodiment is a structure in which the socket 121 and the inner shaft 112 are screwed together to be disassembled and assembled to replace the size of the socket according to the outer diameter of the power shaft. The screw is composed of a left screw so as not to loosen during clockwise rotation.

The drive shaft connecting portion 130 is an element formed on one side of the flexible shaft 110 for connection with the drive shaft 509 to form a plug 131 on the inner shaft 112 end of the flexible shaft 110, the outer covering portion It has a structure in which the separation prevention ring 132 is formed on the outside of the (111).

The plug 131 has an oblong plate structure integrally formed on an extension line of the shaft center 112b of the inner shaft 112 as an element for making a direct connection with the drive shaft 509. It is connected to the drive shaft by being bitten, and the width is not set out of the shaft core 112b. When the inner shaft is pulled out from the power shaft coupling part, the outer covering part and the inner shaft are separated from each other to check the spring state of the inner shaft or It is configured to replace the shaft.

The detachment preventing ring 132 is a ring that is coupled to the outer shell covering the outer covering to be integrally formed with a groove (132a) formed in the body of the stopper 211 formed in the flexible shaft engaging portion of the shaft mount 200 to be described later It is configured to take on.

The shaft mount is an element that fixes one end of the flexible shaft 110 and maintains a connection state with the driving shaft 509, and may be integrally formed with a driving device of an agricultural work machine, and is attached to a frame around the driving device. It can be implemented in a structure to be connected to the drive by this axis.

The shaft mount 200 illustrated by the embodiment has a flexible shaft coupling portion 210 to which the driving shaft coupling portion 111 of the flexible shaft 110 is connected and fixed at one end thereof, and the driving shaft support portion to which the driving shaft is inserted and supported at the other side. 220 is formed, the frame attachment portion 230 is formed on the outside.

The flexible shaft coupling portion and the drive shaft support portion are continuous cylindrical structures, and the frame attachment portion 230 is a plate structure, in which a plurality of bolt holes are formed so that the bolts 250 can be fastened and fixed to the frame 240 located at the work machine driving portion. to be.

The flexible shaft coupling portion 210 is formed with a stopper 211 coupled to the groove 132a of the separation prevention ring 132 formed outside the driving shaft coupling portion of the flexible shaft. The stopper is configured to be retracted from the inner groove when the pin 211b supported by the spring 211a protrudes into the inner groove 212 of the flexible shaft coupling portion and pulls the pin handle 211c exposed to the outside. Insert the drive shaft connecting part of the flexible shaft into the shaft mount with the pin pulled back, and when the pin knob is released, it protrudes due to the spring force and catches the groove 132a of the release preventing ring 132. It acts to detach the drive shaft connecting part of the flexible shaft to the shaft mount.

The shaft mount 200 may be integrally formed with an agricultural work machine and may be configured to make a power connection by simply connecting the flexible shaft, and may be attached to the frame of the agricultural work machine as shown by the embodiment. Therefore, the drive shaft expressed above is used as a term including various types of shafts for providing to the drive shaft by receiving external power installed in the work machine as well as the shaft of the drive.

The distributor is to supplement the existing agricultural machinery with only one power shaft, so that it has a plurality of power shafts. The combination of gears can be formed integrally with the agricultural machinery by forming an input shaft and a plurality of output shafts. As an independent structure, gears may be arranged inside the body so that one input shaft and a plurality of output shafts are provided on the body, and an attachment part for attaching to an agricultural work machine may be installed outside the body.

4 illustrates an embodiment of a distributor, in which a plurality of gears 430 are arranged and combined in a case to distribute the power from the input shaft 410 to the output shaft 420, and to attach the attachment portion 440 to the outside of the case. The input shaft 410 is formed to be coupled to the frame of the agricultural work machine by the bolt 450 is connected to the connecting shaft 505 'is connected to the power shaft, one of the output shaft is a flexible shaft structure 100 ) Is used to drive the agricultural work machine, and the other one of the output shafts illustrates a power transmission structure directly connected to the drive shaft 509 of the agricultural work machine. The power transmission device structure may be applied to a case where the flexible shaft structure is used to provide driving power of the fertilizer spreader and the driving shaft of the rotary work machine is directly connected to the output shaft.

5 is an embodiment of a structure in which three output shafts are formed in a distributor, in which one of the output shafts is directly connected to a drive shaft 509 of an agricultural work machine, and the other two output shafts use the flexible shaft structure 100. It shows the structure of power transmission device connected to agricultural work machine, and it can be useful when installing rotary work machine, fertilizer spreader and planter together to compose multi-task or driving power of agricultural work machine with separated power. .

Figure 6a shows a tractor manure spreader configured in accordance with the present invention, the hopper 502 is installed on the upper L-shaped frame 501, the conveyor belt 503 is installed in the open lower portion of the hopper inside the hopper The compost is transported to the rear, the spreading fan 504 is installed at the end of the conveyor belt, the shaft of the spreading fan is fixed to the drive shaft support portion 220 of the shaft mount 200 is fixed to the frame 501, The drive shaft connecting portion 130 of the flexible shaft assembly is coupled to the lower flexible shaft coupling portion 210 of the shaft mount, and the power shaft connecting portion 120 of the flexible shaft assembly is one output shaft of the distributor 400 integrally formed with the tractor. 420, the shaft mount is integrally coupled to the pulley shaft 508 of the belt for driving the conveyor belt, the shaft mount is connected to the flexible shaft assembly 100 connected to the other output shaft of the distributor flesh The drive of the fan and the conveyor belt so that the structure can be made by the power coupled by a flexible shaft.

The tractor manure spreader is simple in configuration by simply connecting the power for driving the spreading fan and the conveyor belt by the flexible shaft, and the power loss by the heavy shaft is reduced, so that efficient power operation is possible, It is safe to use because it is not exposed to the outside. In addition, by not using hydraulic pressure, it is possible to prevent various breakdowns in the hydraulic system and deterioration of the durability of the tractor.The compost spreader can be configured to be moved by wheels, and when used as an auxiliary connecting device, the tow can be pulled by a cultivator or a passenger manager. It will provide an effect that you can use.

Figure 7 shows the power transmission device structure applied to the rotary working machine 600 and the fertilizer spreader 700 according to the present invention, the frame 710 of the fertilizer spreader is fixed on the rotary work machine 600, the fertilizer spreader hopper The spreading fan 730 is installed at the bottom, and the spreading fan shaft 740 is a structure supported by the hopper and the frame in the hopper so that the spreading fan shaft is integrally coupled with the shaft mount 200. By connecting the output shaft 420 of the distributor 400, which is integrally coupled to the shaft mount 200 and the tractor, to the flexible shaft assembly 100, the driving power of the spreading fan is connected, and the driving shaft of the rotary work machine 600 ( 610 is a structure to be directly connected to the distributor output shaft using a joint (620). The above structure shows that it is possible to configure the power transmission device required for multiple operations without being hydraulic.

As can be seen by this application example, the present invention has a wide range of applications, and work in a state in which it is separated from a power source such as a pump, a threshing machine, a topsoiler, and the like by avoiding the limitations of the power transmission structure of the existing agricultural machinery. Even if this is done can be utilized in a variety of ways, such as simply to draw power to drive.

The present invention according to the above configuration is used to provide a power transmission device for the conventional multi-tasking by branching the power shaft, a power transmission device capable of a plurality of multi-tasking using the flexible football adult and the shaft mount is a branched power. This inevitable hydraulic pressure can be replaced, and thus has the advantage that it can be used to mount the agricultural work machine, which has been supplied for conventional tractors on agricultural machinery such as cultivators and managers. In addition, the present invention is easy to connect the power, easy to use, the rotating element is not exposed to the outside, safe operation is possible, and can replace the heavy and long shaft, less power loss, free power connection is possible The cost according to the device configuration can be reduced.

Claims (5)

A distributor for distributing rotational power of the power shaft provided by the power source to the plurality of output shafts, a connecting means for connecting the output shaft to one end of the flexible shaft, and a connecting means for connecting the drive shaft to the other end of the flexible shaft; Including a shaft mount having a connecting means for connecting the drive shaft connecting means of the flexible shaft assembly and a support means for supporting the drive shaft, the rotational power of the power shaft is distributed to the plurality of output shaft by the distributor, the output shaft of the distributor and agricultural In the power transmission structure of the agricultural work machine using a flexible shaft which is configured to transmit the power from the power source to the agricultural work machine by connecting the shaft mount mounted on the drive unit of the work machine by the flexible shaft member, The connecting means with the output shaft of the flexible shaft assembly is made of a structure in which the socket coupled to the power shaft is coupled to the inner shaft end, the outer cover portion of the inner shaft end is coupled to the rotation preventing mechanism, the connecting means to the drive shaft is coupled to the drive shaft The shaft mount has a structure in which the plug and the separation prevention ring are formed, and the shaft mount has a flexible shaft coupling part to which the driving shaft connection part of the flexible shaft is connected and fixed at one end, a driving shaft support part is formed at the other end, and an attachment part is formed at the outside. Rotation power transmitted from the flexible shaft in the state attached to the frame of the agricultural work machine made of a power transmission device structure of the agricultural work machine using a flexible shaft, characterized in that for driving the agricultural work machine. A distributor for distributing rotational power of the power shaft provided by the power source to the plurality of output shafts, a connecting means for connecting the output shaft to one end of the flexible shaft, and a connecting means for connecting the drive shaft to the other end of the flexible shaft; Including a shaft mount having a connecting means for connecting the drive shaft connecting means of the flexible shaft assembly and a support means for supporting the drive shaft, the rotational power of the power shaft is distributed to the plurality of output shaft by the distributor, the output shaft of the distributor and agricultural In the power transmission structure of the agricultural work machine using a flexible shaft which is configured to transmit the power from the power source to the agricultural work machine by connecting the shaft mount mounted on the drive unit of the work machine by the flexible shaft member, The connecting means with the output shaft of the flexible shaft assembly is made of a structure in which the socket coupled to the output shaft is coupled to the inner shaft end, the outer cover portion of the inner shaft end is coupled to the rotation preventing mechanism, and the connecting means to the drive shaft is coupled to the drive shaft A plug and a separation prevention ring is formed, wherein the shaft mount is formed at one end of the flexible shaft coupling portion is connected to the fixed drive shaft connecting portion of the flexible shaft, the other side is made of a structure that is integrally attached to the driving device of the agricultural work machine Power transmission device structure of the agricultural work machine using a flexible shaft, characterized in that the rotational power by the flexible shaft is configured to be directly connected to the drive shaft. According to claim 1 or claim 2, wherein the distributor is a power transmission device structure of the agricultural work machine using a flexible shaft, characterized in that formed integrally attached to the power source. According to claim 1 or claim 2, wherein the dispenser is arranged in a plurality of gears in a separate case, the power from the input shaft is distributed to the output shaft with the respective rotational speed, the attachment of the outside of the case of the agricultural work machine Attached on the frame, the input shaft is a power transmission device structure of the agricultural work machine using a flexible shaft, characterized in that the structure is connected by a connecting shaft connected to the power shaft of the power source. delete

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