KR100646013B1 - Power trans device by flexible shaft in agricultural filds - Google Patents

Abstract

The present invention is to provide a power transmission device for transmitting power to a work machine mounted on an agricultural machine such as a tractor or tiller, the connection means with the power shaft is provided at one end of the flexible shaft, and the drive shaft at the other end of the flexible shaft Flexible shaft structure provided with a connecting means; 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 driving shaft; and a power transmission of the agricultural work machine configured to transmit the rotational power of the power shaft to the driving shaft by the flexible shaft component. Device.

Agricultural implement, power train, flexible shaft

Description

POWER TRANSFER DEVICE BY FLEXIBLE SHAFT IN AGRICULTURAL FILDS}             

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

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

Figure 3 is a state diagram applying the present invention to the compost spreader

Figure 4 is an embodiment configured to enable multi-task using a distributor

5 is a structural diagram of a conventional compost 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 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, can be easily connected to various auxiliary work machines using a flexible shaft coupled to both ends. It relates to a power transmission device for agricultural work machines configured to be.

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 power connection between 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 the shaft, bearing and joint for extending the shaft for power connection to the work machine is complicated and expensive, and the power loss due to the resistance of the shaft itself is large, and the rotating element is exposed while rotating. There is 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 this power transmission, mechanical power connection is mainly used for agricultural work machines such as rotary work machines, and hydraulic type is widely used for driving non-load machines such as rotary blades of fertilizer spreaders. In the case of multiple operations such as rotary work, fertilizer spraying work, rotary work and sowing work, mechanical and hydraulic power transmission methods are used interchangeably. It is not efficient, and there is a problem that the burnout of the mechanism, and lowering the durability of the agricultural machinery itself as a power source.

For example, a manure spreader mounted on a tractor is used to spread manure while being mounted on a tractor. As shown in FIG. 5, a hopper 502 is installed on an L-shaped frame 501. , The conveyor belt 503 is installed in the open lower portion of the hopper, the compost in the hopper is transported to the rear, the spreading fan 504 is installed on the end of the conveyor belt is configured to spray 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 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. Therefore, as shown in the case of most compost spreaders, the spreading fan is driven using a connecting shaft 505 'connected to the tractor's PTO shaft, a long shaft 506 connected to the connecting shaft, and a two-way gearbox 507. In addition, the conveyor 503 is forced to use a method of driving by the hydraulic pressure of the tractor using the hydraulic motor 508. Therefore, such a power connection for driving the spreading fan uses the long axis 506 with its own weight and the connecting shaft 505 'that rotates in an exposed state, thereby reducing the efficiency of the power and increasing the risk. The vibration of the internal gear element of the two-way gear box 507 connected to the bearing element and the spreading fan shaft is aggravated, and the rotating element is exposed as it is, there is a problem that the risk of safety accidents is increased.

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.

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. .

The present invention, in providing the power required for driving a variety of work tools used in the tractor or tiller, etc., the connection is easy and simple to use, the connection of the auxiliary power as well as the connection of the main power, the position or direction of the drive shaft It is an object of the present invention to propose a power transmission device for agricultural work machines that can be freely connected regardless of the structure.

To this end, the present invention provides a flexible shaft assembly having a connecting means with a power shaft at one end of the flexible shaft, the connecting means with a drive shaft at the other end of the flexible shaft; Presenting a power transmission device configured to transfer the rotational power of the power shaft to the drive shaft by the flexible shaft member; 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 do.

The connecting means of the flexible shaft assembly with the power shaft may have a structure in which a socket coupled to the power shaft is coupled to the inner shaft end, and a rotation preventing device is coupled to the outer covering of the inner shaft end, and the connecting means to the driving shaft is connected to the driving shaft. It may be made of a structure in which the plug is coupled to the separation prevention ring is formed.

The shaft mount may have a structure in which a flexible shaft coupling portion to which the driving shaft connecting portion of the flexible shaft is connected and fixed is formed at one end thereof, and the driving shaft is coupled therein.

The power transmission device of the agricultural work machine is connected to the drive shaft of the agricultural work machine and the plug of the flexible shaft assembly in the shaft mount, the socket of the flexible shaft is connected to the power shaft of the agricultural machine, the outer covering is the inner shaft by the rotation prevention device The rotation of the agricultural machinery is prevented from being rotated together and the power of the agricultural machine is transmitted to the agricultural work machine while the driving shaft connection part is held in the shaft mount by the separation prevention ring. Free power connection is made without regard to position, and when using a separate distribution gear, it has a feature to mechanically connect power connection with a large load and auxiliary power with a small load.

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

Figure 1 shows the basic configuration of the present invention, the present invention consists of a flexible shaft assembly 100 and the shaft mount 200.

The flexible shaft assembly includes a flexible shaft 110, a power 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.

Power shaft connecting portion 120 is a portion coupled to the power shaft (PTO shaft, 505) of agricultural machinery, such as tractors or tillers are coupled to the socket 121 and the outer sheath to the inner shaft 112 end of the flexible shaft It consists of a rotation preventing device (122).

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 2 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 can be prevented. 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 rotation preventing 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, so as to wrap the outer sheath as shown in the embodiment. Covering the ring 122a, it is possible to connect the chain (122b) to the ring and the hook ring (122c) to the end of the chain can be implemented by a structure that is fixed around the power shaft.

Power shaft connecting portion 120 structure shown by the embodiment is a structure that can be assembled and disassembled by coupling the socket 121 and the inner shaft 112 with a screw to replace the size of the socket according to the outer diameter of the power shaft, The screw has a structure 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 separation prevention ring 132 is a ring that is coupled to the outer shell covering the outer covering to be integrally formed with a groove (132a) to be caught by the stopper formed in the flexible shaft engaging portion of the shaft mount 200 to be described later Consists of.

The drive shaft connecting portion is an embodiment in which the connecting means is a ring and a plug, or the driving shaft connecting portion may also be configured in the form of a socket like the power shaft connecting portion. It may be implemented in a form in which the means are properly combined.

The shaft mount 200 is an element that fixes one end of the flexible shaft 110 and maintains a connection state with the drive shaft 509. The shaft mount 200 is a flexible member in which the drive shaft coupling portion 111 of the flexible shaft 110 is connected and fixed to one end. A shaft coupling portion 210 is formed, the other side is the drive shaft support portion 220 is formed to support the drive shaft is formed, the frame attachment portion 230 is formed in the structure.

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 be connected by simply connecting the flexible shaft to the agricultural work machine, 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.

Figure 3 shows a tractor manure spreader to which the present invention is applied, a hopper 502 is installed on the upper L-shaped frame 501, a conveyor belt driven by a hydraulic motor 508 in the open lower portion of the hopper ( 503 is installed and the compost in the hopper is transported to the rear, the spreading fan 504 is installed at the end of the conveyor belt, the shaft of the spreading fan drive shaft support of the shaft mount 200 is fixed to the frame (501) ( It is inserted into and fixed to the 220, 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, the power shaft of the tractor of the power shaft connecting portion 120 of the flexible shaft assembly ( 505).

The above-mentioned tractor manure spreader is simple in configuration as the power for driving the spreading fan is connected by the flexible shaft, and the power loss by the heavy shaft is reduced, so that efficient power operation is possible, and the rotating part of the shaft is exposed to the outside. It does not have the advantage of being safe to use.

Although the hydraulic motor is used to drive the conveyor belt in the above structure, the output shaft for distributing the power of the input shaft by the input shaft 410 and the inner gear element which is configured to double the power shaft of the tractor or is coupled to one power shaft ( By using a separate power splitter 400 having a 420 can be configured to drive the conveyor and drive the spreading fan by the flexible shaft.

4 uses a power splitter 400 to connect the input shaft 410 of the splitter to the power shaft 505 of the tractor, and connects the long shaft 506 to one of the output shafts of the splitter to drive a large load driving device. The flexible shaft assembly 100 is connected to the other output shaft 420 and shows a configuration connected to a driving device that takes a small load.

The power splitter can further expand the field of use of the power transmission device according to the present invention. For example, a rotary work machine is mounted on a tractor, tiller, or passenger car, and a fertilizer spreader or planter is mounted on the rotary separately or simultaneously. By configuring the power connection is made using the flexible shaft assembly according to the present invention can use only the mechanical power transmission device can configure the power required for multiple complex operations.

In addition, the present invention can be utilized in a variety of ways, such as to simply draw the power to drive even when the work is performed in a state separated from a power source such as a pump, threshing machine, topsoil manufacturers.

As described above, the present invention has the effect of making the power connection easy and easy to use, and safe operation is possible because the rotating element is not exposed to the outside.

In addition, the present invention is less power loss by using a lighter shaft compared to the power connection structure by the use of heavy and long shafts, the wear and loss of the connection is reduced and durability is improved, regardless of the direction and position of the power transmission It is possible to take out power, and can easily use it for a passenger manager or cultivator without a hydraulic device, and it has the effect of enabling power transmission by replacing hydraulics with low efficiency and frequent failure.

Claims (5)

delete delete A flexible shaft assembly provided at one end of the flexible shaft with a connecting means with a power shaft, and at the other end of the flexible shaft with a connecting means with a driving shaft; A shaft mount including connecting means for connecting the drive shaft connecting means of the flexible shaft assembly and supporting means for supporting the drive shaft; In the power transmission device of the agricultural work machine, including the rotational power of the power shaft is transmitted to the drive shaft by the flexible shaft assembly, The connecting means of the flexible shaft assembly with the power shaft 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 with the drive shaft is coupled to the drive shaft Is made of a structure in which the plug and the separation prevention ring is formed, The shaft mount has a structure in which a flexible shaft coupling portion for connecting and fixing the drive shaft connecting portion of the flexible shaft is formed at one end, a driving shaft support portion is formed at the other end, and an attachment portion is formed at the outside, and the shaft mount is attached to the frame of the agricultural work machine. The power transmission device of the agricultural work machine, characterized in that the rotating power transmitted from the flexible shaft is connected to the drive shaft to drive the agricultural work machine. A flexible shaft assembly provided at one end of the flexible shaft with a connecting means with a power shaft, and at the other end of the flexible shaft with a connecting means with a driving shaft; A shaft mount including connecting means for connecting the drive shaft connecting means of the flexible shaft assembly and supporting means for supporting the drive shaft; In the power transmission device of the agricultural work machine, including the rotational power of the power shaft is transmitted to the drive shaft by the flexible shaft assembly, The connecting means of the flexible shaft assembly with the power shaft 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 with the drive shaft is coupled to the drive shaft Is made of a structure in which the plug and the separation prevention ring is formed, The shaft mount is formed at one end of the flexible shaft coupling portion is connected to the drive shaft connecting portion of the flexible shaft, the other side is formed of a structure that is integrally attached to the drive device of the agricultural work machine, the rotational power by the flexible shaft directly to the shaft of the drive device Power transmission device for an agricultural work machine, characterized in that configured to be connected and delivered. 5. The power train of the agricultural work machine according to claim 3 or 4, wherein the socket and the inner shaft end are coupled by a left screw to separate the socket from the flexible shaft.

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