JP2008167753A - Foldable farm implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foldable farm implement provided with a locking device automatically locking an apron on a shield cover in folding a working part to a center part side. <P>SOLUTION: A center section of the longitudinal direction of a puddling harrow being a farm implement is vertically-movably fitted in on a rear part of a tractor through a coupler. The working parts extending both right and left side from the center part are foldable to the center parts 5, wherein the puddling harrow is provided with shield covers 15, 15a and aprons 16, 16a on the outer periphery of a rotary working part. A locking device 21 as a locking device locks the apron 16a of the right and left working parts automatically to the shield cover 15a in folding the working parts 6L, 6R to the center part side 5, and automatically releases the locking of the shield cover 15a from the apron 16a when developing the working parts in working state. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  According to the present invention, a farm machine is attached to a rear part of a tractor through a connecting device so that the farm machine can be moved up and down, and a work machine part extending from the center part to the left and right sides is folded to the center part side. It relates to a possible agricultural machine.

  Conventionally, as shown in FIG. 11, a longitudinally central portion of the farm work machine A is attached to a rear portion of a tractor (not shown) via a connection device (three-point link connection device) B so as to be movable up and down. Power is transmitted to the central portion C, and the work machine portion D extending from the central portion C to the left and right sides can be folded with respect to the central portion C around the rotation axis E on the central portion C side. The farm work machine A is well known (see, for example, Patent Document 1).

In the agricultural working machine A, an apron G and a leveler H are provided on the outer periphery of the rotary working unit F, and the leveler H of the central part C and the leveler H of the working machine part D are connected by a rotating shaft I. When the work machine part D is folded toward the center part C, the apron G of the center part C and the apron G of the work machine part D are both pivotable, and the apron G and the leveler H are hung. There are cases where the aircraft is hung while the aircraft is running, or other members are brought into contact with each other to generate sound, or other members are damaged.
In addition, as a folding work machine, there was also a folding back type in the past, but in this case, when folded, the apron and the leveler are in the same positional relationship as the working state, so the above problem is Did not occur.

Japanese Patent Laid-Open No. 10-295114 (FIG. 6)

  As described above, in the conventional agricultural machine A, when the machine body is run with the work machine part D folded to the center part C side, the apron G and the leveler H are suspended, and the apron G and the leveler H are hung. There is a problem in that the sound is generated by contacting other members, or the other members are damaged.

  The present invention automatically locks the apron to the shield cover when the work implement portion is folded to the center portion side, and automatically deploys the apron to the shield cover when the work implement portion is deployed to the working state. When the lock is released, and when the work machine part is deployed to the working state, the lock device automatically releases the lock of the apron to the shield cover and locks the lock pin to the apron of the center part. An object of the present invention is to provide a folding farm working machine provided with a

In order to achieve the above object, the present invention is characterized by the following configurations.
A. At the rear part of the tractor, a middle part in the length direction of the agricultural machine is mounted so as to be movable up and down via a connecting device, and power is transmitted from the tractor to the central part of the agricultural machine. In the agricultural machine that can fold the work machine part extending to both sides to the center part side,
The above agricultural machine has a shield cover and apron on the outer periphery of the rotary working part. When the work machine part is folded to the center part side in the apron of the left and right work machine parts, the apron is automatically locked to the shield cover. When the working machine part is deployed to the working state, a locking device is provided that automatically releases the locking of the apron to the shield cover.
B. At the rear part of the tractor, a middle part in the length direction of the agricultural machine is mounted so as to be movable up and down via a connecting device, and power is transmitted from the tractor to the central part of the agricultural machine. In the agricultural machine that can fold the work machine part extending to both sides to the center part side,
The above agricultural machine has a shield cover and apron on the outer periphery of the rotary work part. When the work machine part is folded into the apron of the left and right work machine parts, the apron is locked to the shield cover and the work machine part is in the working state. When deployed in the position, a locking device for releasing the locking of the apron to the shield cover was provided.
C. The locking device is configured to automatically release the locking of the apron to the shield cover and automatically lock to the apron of the central portion when the working machine portion is deployed to the working state.

  According to the folding agricultural work machine of the present invention having the above configuration, the apron is automatically locked to the shield cover when the work machine part is folded, so that the apron hangs when the machine is running or other members. There is no sound generated by touching or damage to other members. Also, when the work implement part is deployed to the working state, the apron of the apron is automatically released from the shield cover, so that the apron of the work implement part can freely rotate to perform good leveling work. become able to. Furthermore, the locking device automatically releases the locking of the apron to the shield cover and automatically locks to the apron of the central portion when the working machine portion is deployed to the working state. The apron of the work implement part can be rotated at the same time to perform a wide range of leveling work at the same time.

Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings.
In FIG. 1 to FIG. 3, reference numeral 1 is a cutting harrow as a folding farm working machine having a long length in the left-right direction and having a crushing and cutting function. A lower link connecting portion 2 and a top mast 3 connected to a well-known three-point link hitch mechanism composed of a top link and a lower link of a tractor (not shown) are provided in the central portion of the front portion of the hello 1. The blank hello 1 is mounted on the rear part of the tractor so as to be movable up and down. In addition, power is transmitted from the PTO shaft of the tractor via the input shaft 4a to the transmission gear box 4 provided at the front center portion of the scraping harrow 1 via a universal joint, a transmission shaft, and the like.

  The blank hello 1 is divided into a central part 5 and left and right work machine parts 6L and 6R that are slightly wider than the distance between the tractor tires T, and the left and right end parts of the center part 5 and the left and right work machine parts. The inner ends of 6L and 6R are connected to each other by rotating shafts (rotating fulcrums) 7 and 7 so as to be rotatable by about 180 °, and the back surface of the central portion 5 and the back surfaces of the left and right work implement portions 6L and 6R are overlapped. And can be folded. Accordingly, the central portion 5 has a width capable of erasing wheel marks attached to the field by the tire T of the tractor. As shown in FIG. 1, the lengths of the left and right work machine parts 6L and 6R are approximately halved with respect to the length of the central part 5. The work machine parts 6L, 6R are symmetrical and have substantially the same configuration.

  On both the left and right sides of the transmission gear box 4, there are provided transmission frames 8, 8a that also serve as a main body frame and have a transmission shaft built therein. Chain transmission cases 9, 10 and 10 are suspended from the work frame portion 6L side of the transmission frame 8 and the outer ends of the transmission frames 8a and 8a, respectively. Further, side plates 11, 12, 12 are suspended from the outer end of the transmission frame 8 on the working machine part 6 R side and the inner ends of the working machine parts 6 L, 6 R. Between the chain transmission case 9 and the side plate 11 and between the lower ends of the chain transmission cases 10 and 10 and the side plates 12 and 12, crushed soil / rotating rotors (rotary working portions) 13 and 13a are pivotally supported.

  A clutch 14 is provided at an end portion where the central portion 5 of the transmission shaft and work implement portions 6L, 6R that are housed in the transmission frames 8, 8a face each other. As shown in FIGS. 1 and 2, the clutch 14 is in a connected state when the left and right working machine parts 6L and 6R are deployed in the working state with respect to the central part 5, and the working machine part as shown in FIG. When 5L and 5R are rotated about the rotary shaft 7 and folded on the central portion 5, they are cut off. The upper portions of the crushed soil / rotating rotors 13 and 13a are covered with shield covers 15 and 15a supported by the main body frame. The levelers 17 and 15a are attached to the rear ends of the shield covers 15 and 15a. The upper ends of the aprons 16 and 16a, in which 17a is pivotally supported by the pivot shaft 17b, are pivotally attached via the pivot shaft 16b so as to be rotatable in the vertical direction. A compression rod is interposed between the main body frame, the apron 16, 16a, and the levelers 17, 17a. Further, the levelers 17 and 17a can be displaced between a leveling position for leveling the soil and a soiling position for scraping the soil.

  The base portions of the link arms 18 and 18a are connected to the opposite ends of the leveler 17 of the central portion 5 and the levelers 17a of the left and right work machine portions 6L and 6R, respectively, and the distal ends of the link arms 18 and 18a are connected to each other. Are pivotally connected by a pivot 19 and a pin 20. And the apron 16 and the leveler 17 of the center part 5 are independent with a vertical rotation space | interval between the apron 16a and the leveler 17a in the state which folded the left and right working machine parts 6L and 6R on the center part 5. It is possible to operate with. An extension leveler may be provided at the outer end of the leveler 17a so as to be able to rise and fall.

  As shown in FIGS. 1 and 2, in the halo 1 having such a configuration, as shown in FIGS. 1 and 2, the central part 5 and the left and right working machine parts 6 </ b> L and 6 </ b> R all work. The left and right working machine parts 6L and 6R are folded with respect to the central part 5 to work only with the central part 5. The right working machine part 6R is folded with respect to the central part 5 and the central working part 5 and the left working machine part 6L. The four types of work in which the left working machine part 6L is folded with respect to the central part 5 and the central working part 5R and the right working machine part 6R are worked in accordance with the size and shape of the farm field. Select and implement.

  Especially in a narrow field, the left and right working machine parts 6L and 6R are folded with respect to the central part 5 and work is performed only on the central part 5, so that the leveler 17 can be freely moved by the link arm 18, pivot 19 and pin 20 together with the apron 16. It can be rotated and can perform good crushed soil and leveling work. Further, when the work is finished and the tractor and the work implement 1 leave the field, the center part 5 erases the tractor wheel T trace. Furthermore, since the leveler 17 of the central portion 5 and the levelers 17a of the left and right work machine portions 6L and 6R are rotatably connected by the link arms 18, 18a, the pivot 19 and the pin 20, the central portion 5 Thus, the work machine parts 6L and 6R are folded and the work of expanding from the folded state to the working state is performed easily and smoothly.

A locking device 21 as a locking device shown in FIGS. 4 to 6 is provided between the apron 16 of the central portion 5 and the apron 16a of the left and right working machine portions 6L and 6R.
FIG. 4A is a diagram showing a state in which the apron 16a of the left working machine part 6L is locked to the shield cover 15a of the left working machine part 6L by the locking device 21 in the first embodiment. FIG. 5A is a view showing a state in which the apron 16a of the right working machine part 6R is locked to the shield cover 15a of the right working machine part 6R by the locking device 21 in the first embodiment, and FIG. The figure which showed the state which cancelled | released latching of the left and right working machine parts 6L and 6R and the shield cover 15a by the locking device 21 in the first embodiment, (b) is a P- in FIG. 5 (a). The arrow view in the P line, (c) is the arrow view figure in the QQ line in FIG. 5 (a), FIG. 6 is the elements on larger scale of FIG. 5 (a).

  In addition, since the chain transmission case 9 exists on the left side of these lock devices 21, the total length of the left lock pin 22 is longer than the total length of the right lock pin 22 as shown in FIG. The others are symmetrical and have almost the same configuration.

  This locking device 21 is inserted with U-shaped lock pins 22 through two support holes 16c1, 16c2 formed in the side plates 16c of the aprons of the left and right work machine parts 6L, 6R, and a spring 23, washer 24, pin 25, 25 is slidably held within a predetermined range. Each lock pin 22 has a different U-shaped length, and the tip 22a on the short side is inserted into a locking hole 15b1 formed in the side plate 15b of the shield cover of the left and right work machine parts 6L and 6R. On the other hand, it can be inserted and removed, and is inserted into the locking hole 15b1 in a folded state. When the left and right working machine parts 6L and 6R are expanded to the working state, the long end 22b comes into contact with the side plate 16d of the apron 16 of the central part 5 so that the lock pin 22 is elasticized by the spring 23. The distal end 22a on the short side is removed from the locking hole 15b1 formed in the side plate 15b of the shield cover 15a of the left and right work machine parts 6L and 6R. Accordingly, the locking of the apron 16a with respect to the shield cover 15a of the left and right work machine parts 6L and 6R is automatically released. When the left and right work implement parts 6L, 6R are folded toward the central part 5, the contact between the long end 22b and the side plate 16d of the apron 16 of the central part 5 is automatically released, and the spring 23 The lock pin 22 is moved by the elastic force of the left and right ends, and the tip 22a on the short side is fitted into the locking hole 15b1 formed in the side plate 15b of the shield cover 15a of the left and right work machine parts 6L and 6R. The aprons 16a of the machine parts 6L and 6R are automatically locked to the shield covers 15a of the left and right work machine parts 6L and 6R.

The locking device 21 may be configured as in the second embodiment shown in FIGS.
FIG. 7A is a diagram showing a state in which the apron 16a of the left working machine part 6L is locked to the shield cover 15a of the left working machine part 6L by the locking device 21 in the second embodiment. FIG. 8A is a view showing a state in which the apron 16a of the right working machine part 6R is locked to the shield cover 15a of the right working machine part 6R by the locking device 21 in the second embodiment, and FIG. The figure which showed the state which cancelled | released latching with the left and right working machine parts 6L and 6R and the shield cover 15a by the locking device 21 in 2nd Example, (b) is the RR line | wire in (a). FIG. 9 is a partially enlarged view of FIG.
Note that the U-shaped lock pins 22 of the left and right lock devices 21 have substantially the same configuration.

  That is, on both sides of the apron 16 of the central portion 5, unlocking / engaging members 26 and 27 are provided to be fitted to the long end 22 b of the U-shaped lock pin 22. At this time, since the chain transmission case 9 exists on the left side, the length of the lock release / locking member 26 provided on the left side of the apron 16 of the central portion 5 is the lock release / engagement provided on the right side of the apron 16 of the central portion 5. It is formed longer than the stop member 27. When the left and right working machine parts 6L and 6R are expanded to the working state, one of the long ends 22b of the lock pin 22 is fitted with the unlocking / locking member 26 in the left working machine part 6L. The locking pin 22 is moved against the elastic force of the spring 23 through the pin 25 on the tip side, and the locking hole 15b1 in which the tip 22a on the short side is opened in the side plate 15b of the shield cover 15a. To get out of the lock and unlock automatically. Further, in the right working machine portion 6R, the other long end 22b of the lock pin 22 is engaged with the lock release / engagement member 27 so that the lock pin 22 resists the elastic force of the spring 23. The tip 22a on the short side is removed from the locking hole 15b1 formed in the side plate 15b of the shield cover 15a, and the locking is automatically released. Accordingly, the apron 16 of the central portion 5 and the apron 16a of the left and right work machine portions 6L and 6R can be interlocked and rotated. When the left and right work implement parts 6L and 6R are folded to the center part 5 side, the engagement of the long end 22b with the lock release / locking members 26 and 27 is automatically released, and the spring 23 The lock pin 22 is moved by the elastic force, and the tip 22a on the short side is inserted into the locking hole 15b1 formed in the side plate 15b of the shield cover 15a to shield the aprons 16a of the left and right work machine parts 6L and 6R. The cover 15a is automatically locked.

That is, when the left and right work machine parts 6L and 6R are folded with respect to the center part 5, the apron 16a is automatically locked to the shield cover 15a by the lock device 21, and the apron 16a and the leveler 17a are suspended to run the aircraft. It does not dangle, contact other members, generate noise, or damage other members. Further, when the working machine parts 6L and 6R are expanded to the working state, the locking device 21 automatically releases the locking of the apron 16a to the shield cover 15a, and the apron 16 and the working machine part 6L of the central part 5 are released. , 6R apron 16a freely rotates to perform leveling work. Further, when the working machine parts 6L and 6R are expanded to the working state and the long end 22b is engaged with the unlocking / locking members 26 and 27, the apron 16a is automatically attached to the shield cover 15a. While the locking is released, the apron 16 of the central portion 5 and the aprons 16a of the left and right work machine portions 6L and 6R are simultaneously rotated to perform a wide leveling work.
The mechanism of the locking device 21 described in the first and second embodiments is merely an example.

  As described above, according to the folding agricultural work machine of the present invention, the following effects can be achieved by the above-described configuration.

  When the work implement part is folded, the apron is automatically locked to the shield cover by the lock device, and the apron is hung and hanging while the machine is running. Is prevented from being damaged. Further, when the work implement portion is deployed to the working state, the lock of the apron to the shield cover by the lock device is automatically released, and the apron of the work implement portion freely rotates to perform good leveling work. be able to.

  Also, when the work implement part is deployed to the working state and the lock device automatically unlocks the apron from the shield cover, and when the lock device is automatically locked to the central apron, The apron of the machine and the apron of the work machine part can rotate at the same time to perform a wide range of leveling work at the same time.

It is a top view of the whole folding agricultural work machine by this invention. It is the side view developed to the state which works the working machine part of the left and right. It is a side view of the state which folded the left and right working machine parts. (A) is the figure which showed the state which locked the apron of the left working machine part to the shield cover of the left working machine part with the locking device in 1st Example, (b) is 1st implementation. It is the figure which showed the state which locked the apron of the right working machine part to the shield cover of the right working machine part with the locking device in an example. (A) is the figure which showed the state which cancelled | released latching of the right and left working machine parts and a shield cover by the locking device in 1st Example, (b) is in the PP line in (a). An arrow figure, (c) is an arrow figure in the QQ line in (a). FIG. 6 is a partially enlarged view of FIG. (A) is the figure which showed the state which locked the apron of the left working machine part to the shield cover of the left working machine part with the locking device in 2nd Example, (b) is 2nd implementation. It is the figure which showed the state which locked the apron of the right working machine part to the shield cover of the right working machine part with the locking device in an example. (A) is the figure which showed the state which cancelled | released latching of the right and left working machine parts and a shield cover by the locking device in 2nd Example, (b) is in the RR line | wire in (a). It is an arrow view. It is the elements on larger scale of Fig.8 (a). It is a side view of the state which is working in the state which folded the right and left working machine parts. It is a side view of the conventional folding agricultural work machine.

Explanation of symbols

1 ... Daiseki Hello (folding farm machine)
2 ... Lower link connecting part 3 ... Top mast 4 ... Transmission gear box 4a ... Input shaft 5 ... Center portion 6L of the cutting harrow ... Left working machine part 6R ... Right working machine part 7 ... Rotating shaft (rotating fulcrum)
8, 8a ... Transmission frame 9, 10 ... Chain transmission case 11, 12 ... Side plate 13, 13a ... Crushing / powder rotor (rotary working part)
14 ... Clutch 15, 15a ... Shield cover 15b ... Shield cover side plate 16, 16a ... Apron 16c, 16d ... Apron side plate 17, 17a ... Leveler 18, 18a ... Link arm 19 ... Pivot 20 ... Pin 21 ... Locking device Stop device)
22 ... Lock pins 22a, 22b ... Lock pin tip 23 ... Spring 24 ... Washer 25 ... Pins 26, 27 ... Unlocking and locking member T ... Tractor tire

Claims (3)

At the rear part of the tractor, a middle part in the length direction of the agricultural machine is mounted so as to be movable up and down via a connecting device, and power is transmitted from the tractor to the central part of the agricultural machine. In the agricultural machine that can fold the work machine part extending to both sides to the center part side,
The above agricultural machine has a shield cover and apron on the outer periphery of the rotary working part. When the work machine part is folded to the center part side in the apron of the left and right work machine parts, the apron is automatically locked to the shield cover. The folding agricultural work machine is provided with a locking device that automatically releases the locking of the apron to the shield cover when the working machine part is deployed to the working state. At the rear part of the tractor, a middle part in the length direction of the agricultural machine is mounted so as to be movable up and down via a connecting device, and power is transmitted from the tractor to the central part of the agricultural machine. In the agricultural machine that can fold the work machine part extending to both sides to the center part side,
The above agricultural machine has a shield cover and apron on the outer periphery of the rotary work part. When the work machine part is folded into the apron of the left and right work machine parts, the apron is locked to the shield cover and the work machine part is in the working state. A folding agricultural work machine provided with a locking device that releases the locking of the apron to the shield cover when deployed to the top.   The locking device is configured to automatically unlock the apron from the shield cover and automatically lock to the apron at the center when the working machine portion is deployed to the working state. The folding agricultural machine according to claim 1 or 2, characterized in that

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