KR100847920B1 - Horizontality a regulator for tractor - Google Patents

Abstract

The present invention relates to a horizontal control device for a tractor, and more particularly, a tractor that can be easily adjusted by the reciprocating movement of the rod by the driving force of the motor, as well as the horizontal adjustment of the working machine is automatically made to improve the work efficiency It relates to a leveling device for.

The present invention is one side is coupled to the rear of the tractor and the body portion formed with a space therein, and one side is inserted into the inside of the body and the other side is coupled to the work machine to the horizontal adjustment device consisting of a rod reciprocating by the length adjusting means In this case, the length adjusting means, the inside of the body portion 10 is provided so that one side is rotated by a bearing, the other side is inserted into the engagement hole 22 formed in one side of the rod portion 20 to be engaged with the shaft 30; A rotary gear part 34 having a plurality of threads formed on one outer circumferential surface thereof so as to be engaged with the threads formed on one outer circumferential surface of the rotary shaft 30; Is coupled to the other side of the rotary gear portion 34, and being controlled by the control unit 50 is composed of a drive motor 36 for rotating the rotary gear portion 34 to draw in or out the rod portion 20 It features.

Body, rod, length adjusting means, limit switch, horizontal sensor

Description

Leveling device for tractors {HORIZONTALITY A REGULATOR FOR TRACTOR}

1 is a perspective view showing a tractor horizontal adjustment device according to the present invention,

2 is a cross-sectional view of the horizontal adjustment device according to the present invention,

Figure 3 is an exploded perspective view showing the length adjusting means according to the present invention,

Figure 4 is an enlarged partial cross-sectional view showing a guide ring according to the present invention.

<Description of Symbols for Main Parts of Drawings>

10: body 11: connecting piece

15: thread 20: rod part

21: Joining Piece 22: Binding Ball

24: limit switch 25: connection bar

30: axis of rotation 31: bearing

34: rotary gear part 35a: gear part

35b: locking portion 36: drive motor

37: drive shaft 40: rotating plate

41: fastening portion 45: rotation control unit

46: pressure spring 47: pressure plate

48: protective cover 50: control unit

52: level sensor 54: timer

55: guide ring

The present invention relates to a leveling device for a tractor, and more particularly, a horizontal level for a tractor that can improve the work efficiency by easily adjusting the interval by the reciprocating movement of the rod portion by the driving force of the motor, the horizontal adjustment is made automatically. It relates to a control device.

In general, the tractor is an indispensable device for towing various work tools such as light sputum, plow, harvester, etc., and a rear link of the tractor is provided with a connecting link to attach and detach the work machine. It is connected by using the leveling device.

Here, the balance between the tractor body and the work machine is very important, and as the fuel consumption increases, such as the traction resistance increases during imbalance, the up, down, left and right horizontal planes of the work machine and the tractor are corrected, and the optimum connection according to the work machine volume is achieved. In order to improve the efficiency of the work by correcting the interval is used the leveling device.

As described above, the horizontal adjusting device used in the connection work between the tractor and the working machine uses two types of horizontal adjusting device, the upper and lower horizontal control devices.

The horizontal adjustment device is composed of a body portion that is coupled to one side of the rear of the tractor, the other side of the body portion is screwed and the cover portion is provided with a handle on the outer peripheral surface, the rod portion is rotatably inserted into the other side of the cover portion In addition, when the work machine is horizontally adjusted, the operator rotates the cover to adjust the horizontality of the upper, lower, left and right by drawing in or drawing out the body from the cover.

However, the conventional leveling device requires a considerable amount of rotational force by the weight of the work machine as the worker has to rotate the cover part by hand, and causes frequent workers to feel fatigue in a short time, causing inconvenience to practical work, As the worker checks the level of the eye, accurate left and right leveling is impossible, which causes a decrease in work efficiency.

In addition, since the work by the tractor is mainly carried out in a lot of water and dusty arable land, in the case of the conventional leveling device, the screwing portions of the body portion and the cover portion are oxidized or corroded by dust, etc. In case of damage or damage to the site, it is difficult to repair and there is a problem in that it is necessary to bear the economic cost.

The present invention was devised to solve the above problems, and an object of the present invention is to facilitate horizontal adjustment by the reciprocating movement of the rod by the driving force of the motor, and to improve the work efficiency by automatically adjusting the horizontal adjustment. In order to provide a tractor leveling device that prevents damage to components in advance and dramatically reduces maintenance costs, foreign matters such as dust do not flow into the length adjusting means.

The configuration of the present invention for achieving the above object, one side is coupled to the rear of the tractor and a space formed therein, one side is inserted into the inside of the body and the other side is coupled to the working machine by the length adjusting means In the horizontal adjustment device consisting of a rod portion reciprocating, the length adjusting means is provided with a rotation shaft which is provided to be rotated by a bearing in one side of the inside of the body portion, the other side is engaged with the binding hole formed on one side of the rod portion; A rotary gear part having a plurality of threads formed on one outer circumferential surface thereof to be engaged with the threads formed on the outer circumferential surface of one side of the rotating shaft; It is coupled to the other side of the rotary gear portion, it is characterized in that it is configured by a drive motor for rotating the rotary gear portion to draw or pull out the rod portion while being controlled by a control unit.

Here, the rotation control unit further includes a rotation control unit provided between the drive shaft and the rotary gear unit to prevent the load according to the maximum withdrawal distance or the pulling distance of the rod portion during forward and reverse rotation of the drive shaft of the drive motor, the rotation control unit is Rotating plate which is rotated through the drive shaft and is coupled to the driving shaft and the nut of the drive motor on one side of the rotating plate, the pressing spring for pressing the rotating plate with an elastic force, the pressing force of the pressing spring is transmitted to the rotating plate Preferably, the other side of the rotating plate is composed of a pressure plate formed integrally with the drive shaft of the drive motor, so that the drive shaft of the drive motor is idling on the rotating plate when a load is generated.

On the other hand, the outer circumferential surface of the rod portion is provided with a pair of limit switches provided to be spaced apart by a predetermined distance through the connecting bar to control the inlet or withdrawal during the reciprocating movement inside the body portion, the working machine to maintain the horizontal to the ground The control unit is further provided with a horizontal detection sensor for transmitting a detection signal, the drive of the driving motor is automatically cut off by the control unit when the maximum inlet distance or the outgoing distance of the rod by the limit switch. .

Hereinafter, with reference to the accompanying drawings will be described in detail a leveling device for a tractor of the present invention.

1 is a perspective view showing a horizontal control device for a tractor according to the present invention, Figure 2 is a cross-sectional view of the horizontal control device according to the present invention, Figure 3 is an exploded perspective view showing a length adjusting means according to the present invention, Figure 4 Partial enlarged cross-sectional view showing a guide ring according to the present invention.

As shown in the figure, the tractor horizontal control device according to an embodiment of the present invention is provided with a connecting portion 11 and a space formed inside the body portion 10 so that one side is coupled to the rear of the tractor, and the body One side is inserted into the inside of the portion 10 and the other side is provided with a coupling portion 21 is provided with a rod portion 20 reciprocated by the length adjusting means.

Here, the length adjusting means is screwed so that one side is rotated by the bearing 31 inside the body portion 10 and the other side is engaged with the binding hole 22 formed on one side of the rod portion 20. Rotating shaft 30 is inserted into the rotary shaft, the rotary gear portion 34 has a plurality of threads formed on one outer peripheral surface to be engaged with the thread formed on the outer peripheral surface of the rotary shaft 30, the drive coupled to the other side of the rotary gear portion 34 It consists of a motor 36.

The rotary gear part 34 is composed of a gear part 35a having a plurality of threads formed on an outer circumferential surface thereof, and a locking part 35b protruding at a predetermined length from both bottoms thereof by coupling a central part to an end of the gear part 35a. It is preferable that the fastening part 41 is formed on one side surface of the rotating plate 40 so that the locking part 35b is inserted and coupled thereto.

Preferably, the drive motor 36 is rotated by the control unit 50 provided separately from the outside to rotate the rotary gear unit 34, and the drive shaft 37 and the rotary gear unit 34 of the drive motor 36. Between the rotation control unit 45 is provided.

The rotation control unit 45 is to prevent the load according to the maximum drawing distance or the pulling distance of the rod unit 20 during the forward and reverse rotation of the drive shaft 37 for the reciprocating movement of the rod unit 20 The rotary plate 40 is provided to rotate through the drive shaft 37 of the drive motor 36, and the drive shaft 37 and the nut of the drive motor 36 on one side of the rotary plate 40 via a medium. The driving motor 36 on the other side of the rotating plate 40 to be coupled to the pressing spring 46 for pressing the rotating plate 40 by the elastic force and the pressing force of the pressing spring 46 to the rotating plate 40 while being coupled It consists of a pressure plate 47 integrally formed on the drive shaft 37 of the) is preferably made of a pressure plate 47 provided on the drive shaft 37 of the drive motor 36 is idling on the rotating plate 40 when a load is generated. Do.

That is, as the rotary plate 40 maintains the state in close contact with the pressure plate 47 by the pressing force of the pressure spring 46, the rotary plate 40 is rotated by the rotation of the pressure plate 47 according to the rotation of the drive shaft 37. ) Will be rotated. In this case, as described above, when the rod part 20 is drawn out or drawn to the maximum, as the load is generated on the rotary gear part 34, the rotating plate 40 also stops without rotating due to the load being generated. Only the pressure plate 47 in close contact with the 40 is rotated together with the drive shaft 37 of the drive motor 36.

Therefore, even if the operator continuously operates the drive motor 36, the load is automatically generated when the maximum drawing distance or the drawing distance of the rod part 20 is exceeded. By only idling the drive shaft 37 of the drive motor 36 it is possible to prevent damage to the parts.

In this case, in order to prevent idle rotation of the driving motor 36 as described above, the connection bar 25 is controlled to control the inlet or withdrawal during the reciprocating movement of the rod unit 20 to the outer circumferential surface of the rod unit 20. It is preferable to further provide a pair of limit switches 24 spaced apart by a certain distance.

Therefore, the drive 50 of the driving motor 36 is automatically cut off by the controller 50 when the limit switch 24 detects the maximum pulling distance or the drawing distance of the rod 20. It is possible to prevent the generation of the power to be in advance, the limit switch 24 is naturally provided to be adjustable position

In this case, the control unit 50 may be provided with a selection switch for manually or automatically operating the drive of the drive motor 36, in the automatic mode in the work machine to sense the level of the work machine A horizontal detection sensor 52 is further provided to transmit a detection signal to the control unit 50 so as to maintain a horizontal level with the ground, and the driving motor 36 is automatically operated when the driving motor 36 is inclined without being horizontal. 20) is preferably brought in or taken out to level.

At this time, the control unit 50 is further provided with a timer (54) to respond when receiving a detection signal of a predetermined time interval according to the traveling speed of the tractor when receiving the detection signal by the horizontal detection sensor 52 to dig the farmland When the work machine is moved to the site, it is preferable that the control unit 50 does not transmit the operation signal even if the detection signal by the horizontal detection sensor 52 is not transmitted to the control unit 50 temporarily. .

On the other hand, between the binding hole 22 of the rod portion 20 and the rotary shaft 30 guides in a state of minimizing the load during the sliding movement of the rod 20 according to the rotation of the rotary shaft 30 and In addition, it is preferable that a screw-shaped guide ring 55 is further provided to prevent damage of the thread due to the screw coupling, and the inner circumferential surface of the binding hole 22 and the outer circumferential surface of the rotating shaft 34 protrude inclined as described above. The guide ring 55 may be formed into a thread having a semicircular shape so that the guide ring 55 is inserted.

In addition, the seal 15 is provided in the body part 10 so that foreign matter does not flow into the body part 10 when the rod part 20 is drawn in or drawn out, and the drive motor 36 rotates with the drive motor 36. It is preferable to further include a protective cover 48 to be coupled to the body portion 10 so that the control unit 45 and the rotary gear unit 34 are disconnected from the outside.

Looking at the operation and effect of the present invention configured as described above, when connecting the work machine to be used to the rear of the tractor is connected using a horizontal adjusting device to adjust the horizontal up, down, left, right of the work machine.

In the case of the horizontal adjusting device is to adjust the horizontal in the state in which the working machine is connected, when the operator applies the power to the control unit 50 to drive the drive motor 36, the drive shaft 37 of the drive motor 36 ) Rotates the rotating plate 40 in close contact with the pressing plate 47 by the pressing force by the pressure spring 46 while rotating).

Rotating the rotating shaft 30 while rotating the rotary gear part 34 across the fastening portion 41 of the rotating plate 40 by the rotation of the rotating plate 40, the rod portion 20 by the rotation of the rotating shaft 30 Rotating the rod portion 20 extends the length of the horizontal adjusting device while drawing the rod portion 20 from the inside of the body portion 10 to the outside.

On the contrary, when the driving motor 36 is reversely rotated, the rod part 20 is introduced into the body portion 10 while being reversely rotated according to the above process, thereby reducing the length of the horizontal adjusting device so that both sides are horizontal. Can be adjusted.

At this time, when the rod part 20 reaches the maximum drawing distance or drawing distance, only the pressure plate 47 provided on the driving shaft 37 of the driving motor 36 rotates when the load is generated, thereby rotating the rotating plate 40. This prevents the parts from being damaged.

That is, when the load is generated as the pressing force of the pressure spring 46 is less than the rotational transmission force due to the load generated, the pressing plate 47 is rotated in the rotating plate 40.

On the other hand, when the operator automatically operates the drive motor 36, the drive motor 36 is driven by the limit switch 24 provided through the connecting bar 25 to the rod portion 20. By this control, unnecessary waste of power of the driving motor 36 can be prevented, and even if the level is not adjusted according to the ground level during the operation, the horizontal adjustment is performed even by moving by the detection by the horizontal detection sensor 52 provided at the rear of the tractor. This becomes possible.

As described above, according to the present invention, not only the gap can be easily adjusted by the reciprocating movement of the rod by the driving force of the motor, but also the horizontal adjustment is made automatically, thereby improving the work efficiency, and controlling the length of foreign matters such as dust during the work. It does not flow into the means, thereby preventing damage to components and significantly reducing maintenance costs. As a result, it is possible to use the product for a long time by prolonging its life and not to waste the economic cost of repurchase. There is an advantage to minimize the burden on farmers by blocking.

Claims (3)

delete In the horizontal adjustment device consisting of a body portion having one side coupled to the rear of the tractor and a space formed therein, and one side is inserted into the inside of the body and the other side is coupled to the working machine and reciprocated by the length adjusting means. The length adjusting means, the rotation shaft 30 is provided in one side of the body portion 10 to be rotated by a bearing, the other side is engaged with the binding hole 22 formed on one side of the rod portion 20. )and; A rotary gear part 34 having a plurality of threads formed on one outer circumferential surface thereof so as to be engaged with the threads formed on one outer circumferential surface of the rotary shaft 30; Is coupled to the other side of the rotary gear portion 34, and is controlled by the control unit 50 is composed of a drive motor 36 for rotating the rotary gear portion 34 to draw in or out the rod portion 20, Between the drive shaft 37 and the rotary gear part 34 to prevent the load according to the maximum drawing distance or the pulling distance of the rod 20 in the forward and reverse rotation of the drive shaft 37 of the drive motor 36 Further provided with a rotation control unit 45, The rotation control unit 45, the rotating plate 40 is provided to be rotated through the drive shaft 37, and the driving shaft 37 and the nut of the drive motor 36 on one side of the rotating plate 40 Compression spring 46 for pressing the rotating plate 40 by the elastic force and coupled to the driving motor on the other side of the rotating plate 40 so that the pressing force of the pressing spring 46 is transmitted to the rotating plate 40 Horizontal control for a tractor, characterized in that consisting of a pressure plate 47 integrally formed on the drive shaft 37 of the 36, the drive shaft 37 of the drive motor 36 is idling on the rotating plate 40 when a load is generated Device. The method of claim 2, On the outer circumferential surface of the rod part 20, a pair of limit switches 24 are provided to be spaced apart by a predetermined distance through the connection bar 25 to control the inlet or the drawout during the reciprocating movement in the body part 10. Become, The work machine is further provided with a horizontal detection sensor 52 for transmitting a detection signal to the control unit 50 to maintain a level with the ground, The tractor is characterized in that the drive of the drive motor 36 is automatically cut off by the control unit 50 when the limit switch 24 detects the maximum pulling distance or withdrawal distance of the rod unit (20) Leveling device.

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