JP4416308B2 - Folding farm work machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
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.
[0002]
[Prior art]
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 agricultural machine A is well known.
[0003]
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.
[0004]
[Problems to be solved by the invention]
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.
[0005]
The present invention automatically locks the apron to the shield cover when the left and right work machine parts are folded to the center part side, and automatically deploys the apron shield cover when the work machine part is deployed to the working state. The lock that releases the lock to the shield cover of the apron automatically and locks the lock pin to the apron at the center when the work implement part is deployed to the working state. An object of the present invention is to provide a folding agricultural machine provided with a device.
[0006]
[Means for Solving the Problems]
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 farm work machine includes a shield cover and an apron on the outer periphery of the rotary work part. When the work machine part is folded, the apron is locked to the shield cover when the work machine part is folded. A lock device is provided to release the locking of the apron to the shield cover when deployed in the working state.
B. The locking device is configured to release the locking of the apron to the shield cover and to lock the apron of the central portion when the working machine portion is deployed to the working state.
[0007]
[Action]
With the above configuration, the folding agricultural work machine according to the present invention is configured such that when the left and right work machine parts are folded, the apron is locked to the shield cover, and the apron is hung when the machine is running, or when it is in contact with other members. Is not generated, and other members are not damaged. Further, when the working machine part is deployed to the working state, the apron is released from the shield cover, and the apron of the working machine part freely rotates to perform leveling work. Furthermore, the working machine part is expanded to the working state to release the locking of the apron to the shield cover, and when locking the locking device to the apron of the central part, the apron of the central part and the left and right working machine parts The apron rotates at the same time and performs leveling work.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
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 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.
[0009]
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.
[0010]
On both the left and right sides of the gear box 4, there are provided transmission frames 8 and 8a that also serve as a main body frame and have an internal transmission shaft. 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.
[0011]
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.
[0012]
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. In the state where the left and right work machine parts 6L and 6R are folded on the central part 5, the apron 16 and the leveler 17 in the central part are independently provided with a vertical rotation interval between the apron 16a and the leveler 17a. It is possible to operate. An extension leveler may be provided at the outer end of the leveler 17a so as to be able to rise and fall.
[0013]
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, as shown in FIGS. 3 and 10. 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.
[0014]
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.
[0015]
A locking device 21 shown in FIGS . 4 to 6 is provided between the apron 16 of the central portion 5 and the aprons 16a of the left and right work 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. Ri removably der for being inserted into the locking hole 15b1 in the 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 . Therefore, 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 released. When the left and right work implement parts 6L and 6R are folded toward the central part 5 , the contact between the long-side tip 22b and the side plate 16d of the apron 16 of the central part 5 is released, and the spring 23 is released. The lock pin 22 is moved by force, 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, and the left and right work machine parts 6L. the 6R apron 16a left and right working machine portion 6L, causing locking the shield cover 15a of 6R.
[0016]
Locking device 21 is to be configured as the second embodiment shown in FIGS. 7-9.
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 Hisashi Naka portion 5 is provided with a lock release, the locking members 26 and 27 to be fitted to the long side of the tip 22b of the length of the U-shaped locking 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 in the central portion is the lock release / locking member provided on the right side of the apron 16 in the central portion. It is formed longer than 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. Release from the lock . 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 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 with the lock release / locking members 26 and 27 of the long end 22b is released, and the elasticity of the spring 23 is released. Then, the lock pin 22 is moved, and the apex 16a of the left and right work machine parts 6L and 6R is attached to the shield cover 15a by inserting the short end 22a into the locking hole 15b1 formed in the side plate 15b of the shield cover 15a. Lock .
[0017]
When the left and right working machine parts 6L and 6R are folded with respect to the central part 5, the apron 16a is locked to the shield cover 15a by the locking device 21, and the apron 16a and the leveler 17a are hung while the machine is running, No noise is generated by touching these members, and other members are not damaged. Further, when the working machine parts 6L and 6R are expanded to the working state, the locking device 21 releases the locking of the apron 16a to the shield cover 15a, and the apron 16 and the working machine parts 6L and 6R of the central part 5 are released. The apron 16a freely rotates to perform leveling work. Furthermore, the working machine section 6L, the expand 6R working state Ru fitted long side of the distal end 22b of length and unlocking-locking member 26 and 27, engagement of the shield cover 15a of the apron 16a In addition to releasing the stop, 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.
[0018]
【The invention's effect】
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.
[0019]
When the left and right work implement parts are folded, the apron is locked to the shield cover by the lock device, and the apron is hung and suspended when the machine is running. It is prevented from being damaged. Further, when the working machine part is deployed to the working state, the locking of the apron to the shield cover by the locking device is released, and the apron of the working machine part can freely rotate to perform a good leveling work. .
[0020]
Also, unfold the working machine part to the working state and unlock the apron to the shield cover by the locking device, and when locking the locking device to the apron in the central part, work with the apron in the central part and the left and right work The apron of the machine part can be rotated at the same time to perform a wide range of leveling work.
[Brief description of the drawings]
FIG. 1 is a plan view of a folding folding harrow according to the present invention.
FIG. 2 is a side view in which the left and right working machine parts are developed in a working state.
FIG. 3 is a side view showing a state in which the left and right working machine parts are folded.
FIG. 4A is a diagram showing a state in which the apron of the left working machine part is locked to the shield cover of the left working machine part by the locking device in the first embodiment, and FIG. 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 1st Example.
FIG. 5A is a diagram showing a state in which the left and right work machine parts and the shield cover are unlocked by the locking device according to the first embodiment, and FIG. 5B is a diagram illustrating a state where P in FIG. (C) is an arrow view in the QQ line in (a).
6 is a partially enlarged view of FIG . 5 (a). FIG.
FIG. 7A is a diagram showing a state in which the apron of the left working machine part is locked to the shield cover of the left working machine part by the locking device in the second embodiment, and FIG. 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 2nd Example.
FIG. 8A is a diagram showing a state in which the left and right work machine parts and the shield cover are unlocked by the locking device according to the second embodiment, and FIG. 8B is a diagram showing an R in FIG. It is an arrow view in the -R line.
FIG. 9 is a partially enlarged view of FIG.
FIG. 10 is a side view showing a state in which work is performed with the left and right working machine parts folded.
FIG. 11 is a side view of a conventional folding machine.
[Explanation of symbols]
1 generation harrow 2 lower link connecting portion 3 top mast 4 speed change gear box 4a input shaft 5 center portion of generation harrow 6L left work machine part 6R right work machine part 7 rotating shaft (rotation fulcrum)
8, 8a Transmission frame 9, 10 Chain transmission case 11, 12 Side plate 13, 13a Crushed soil / rotating rotor (rotary working section)
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 Lock device 22 Lock pin 22a, 22b Tip of lock pin 23 Spring 24 Washer 25 Pin 26, 27 Unlocking / Locking member T Tractor tire

Claims (2)

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 farm work machine includes a shield cover and an apron on the outer periphery of the rotary work part. When the work machine part is folded, the apron is locked to the shield cover when the work machine part is folded. A folding agricultural machine characterized in that a locking device is provided for releasing the locking of the apron to the shield cover when deployed in a working state.  The folding device according to claim 1, wherein the locking device is configured to release the locking of the apron to the shield cover and to lock the apron of the central portion when the working machine portion is deployed to the working state. Agricultural machine.

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