JP3443250B2 - Method for fixing flat plate of rotary working machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can easily switch the horizontal swing of a flat plate of a rotary working machine which is supported so as to be vertically rotatable and horizontally swingable between a free state, a horizontal fixed state, and an inclined fixed state. And a method for fixing a flat plate of a rotary working machine.

[0002]

2. Description of the Related Art Conventionally, a tractor is mounted on a rear part of a work machine so as to be able to move up and down. It is movably supported, and the guide pins provided on both left and right ends of the flat plate are inserted into the vertical guide holes formed on the side plates provided on both sides of the work machine body, and can be swung left and right within the range of the guide holes. A rotary working machine supported by is known.

In order to switch the horizontal swing of the flat plate between a free state and a fixed state in which it is fixed in a horizontal state,
． With a slide type lock fitting ,. Some are equipped with lock fittings by bolting.

[0004]

[Problems to be Solved by the Invention] In the slide type lock metal fitting, the mud adheres to the slide type metal lock fitting when the rotary working machine performs the scraping work, and the movement when switching is deteriorated. Further, although the flat plate can be fixed in a horizontal state, it cannot be fixed in an inclined state. Also,. However, the bolt-locking metal fitting has a problem that a tool is required for switching between locking and unlocking. The present invention has been made to solve the above problems.

[0005]

In order to achieve the above object, the present invention is directed to It is mounted on the rear part of the tractor so as to be able to move up and down through a coupling device, and on the rear part of the working machine body 2 , a flat plate 8 is attached.
Is pivotable up and down, and the center pivot
10a and supported to be horizontally swung through and fitted in the vertical direction of the guide holes 11 of the guide pin 10b provided on the left and right end portions formed in the side plates 5 provided on both sides of the machine body 2 of the average flat plate 8 In the rotary working machine 1 supported so as to be swingable left and right within the range of the guide hole 11 , the water that moves to the side plate 5 at the fixed position and the fixed release position with respect to the guide pin 10b .
Fixed plate 12 having flat fitting hole 12a and inclined fitting hole 12b
The flat plate 8 is pivotally supported, and the flat plate 8 is released from the fixed state so that the flat plate 8 can be swung to the left and right, and is fixed to three positions of a horizontal state or a left and right inclined state.

B. Fixed position the fixing plate 12 to the guide pins 10b, when the user moves to the unlocking position, is characterized in that a locking plate 14 which engages the respective movement position.

[0007]

With the above-mentioned means, the method for fixing the flat plate of the rotary working machine of the present invention is as follows. A horizontal fitting hole 12 that moves to a fixed position and a fixed release position with respect to the guide pin 10b in the side plate 5.
a, the fixed plate 12 provided with the inclined fitting hole 12b is pivotally supported, and the flat plate 8 is released from the fixed state so that it can be swung to the left and right, and is fixed at the three positions of the horizontal state or the left and right inclined state. The four operations of fixing the flat plate 8 to the left-right swingable (free) state and the horizontal state or the left-right inclined state can be easily performed simply by rotating the fixing plate 12 without using a tool. Further, the work range can be widened by fixing the flat plate 8 not only in the horizontal state but also in any of the left and right inclined states.

[0008] Fixed position fixing plate 12 to the guide pins 10b, when the user moves to the unlocking position, by providing the locking plate 14 to lock the respective movement positions, the fixed plate
12 fixed position by the locking plate 14, the rotary work done while securely held in the unlocking position.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below.
A detailed description will be given with reference to the accompanying drawings.

In FIGS. 7 and 8, reference numeral 1 is a rotary scraper (working machine) having a predetermined length in the left-right direction, and a well-known top provided at the front of the rotary scraper (working machine) at the rear of the tractor (not shown). A tractor connecting portion 2, 3 which is vertically movable and connected to a three-point link mechanism including a link and a lower link.
Is provided. The rotary scraper 1 is attached to and detached from the tractor almost automatically,
Power is transmitted via a universal joint, a transmission shaft, etc. to a speed change gear box provided in the front center part of the main body frame 4 which also serves as a transmission frame, via an input shaft.

The body frame 4 extends from the gear box to the left and right sides, a transmission case 5 also serving as a side plate is fixedly provided at one end thereof, and a support frame 5a also serving as a side plate is provided at the other end.
Are fixed so as to face the transmission case 5.
Between the transmission case 5 and the lower end of the support frame 5a,
A well-known work rotor 6 having a crushing and scraping function is mounted on the shaft. The upper portion of the work rotor 6 is covered with a shield cover 7 supported by the main body frame 4, and an apron (flat plate) 8 having a leveler 9 at the rear end position is provided at the rear end portion of the shield cover 7. The upper end of the center pivot 10a is rotatable in the vertical direction via the pivot shaft 10.
It is pivotally attached so as to be rotatable in the left-right direction via.

As shown in FIGS. 1 to 3, an apron (flat plate) 8 is provided with a guide pin 10b projecting laterally from both left and right end portions thereof substantially coaxially with a pivot shaft 10.
0b is inserted into a vertical guide hole 11 formed in the side plate of the transmission case 5 and the support frame 5a, and is supported so as to be swingable left and right around the center pivot 10a within the length range of the guide hole 11. .

A fixed plate 12 having a horizontal fitting hole 12a and a slant fitting hole 12b for fitting and unfitting with respect to the guide pin 10b is provided on the side plate of the transmission case 5 (which may be the side plate of the support frame 5a). Rotate (move) to the fixed position and the fixed release position of the guide pin 10b along the side plate via the pivot 13.
Be pivoted as possible. The apron (flat plate) 8 can swing left and right when the guide pin 10b is unlocked, and the apron (flat plate) 8 is fixed when the guide pin 10b is fitted into the horizontal fitting hole 12a and fixed. When the guide pin 10b is fixed horizontally and fixed by fitting the guide pin 10b into the inclined fitting hole 12b, the apron (flat plate) 8 is fixed in the laterally inclined state.

A locking plate 14 made of an elastic plate is provided on a side portion of the fixed plate 12 when the fixed plate 12 is moved to the fixed position and the fixed release position with respect to the guide pin 10b. Has been. The locking plate 14 has an engaging projection 14a that engages with the two locking holes 12c and 12d formed in the fixed plate 12, and as shown in FIGS.
The fixing plate 12 is locked at a position where the guide pin 10b is fixed and a position where the guide pin 10b is released.

As shown in FIG. 6, the fixed plate 12 is provided with a second inclined fitting hole 12e, and the second inclined fitting hole 12e is formed.
Fit e into the guide pin 10b, and insert apron (flat plate)
The left and right inclined fixing directions of 8 may be fixed in the opposite direction to that when the guide pin 10b is fitted in the inclined fitting hole 12b.

When the rotary scraper 1 is attached to or detached from the tractor, the stand 15 keeps its posture constant.
Is provided. This stand 15 has its connecting portion 16
The fixing pin 18 is attached to the holder 17 provided in the transmission case 5 so as to be attachable / detachable and rotatable up and down about the fixing pin 18 by 180 degrees. Then, by inserting the locking pin 19 into the lower portion or the upper portion of the connecting portion 16 and the holder 17, the stand 15 is fixed to the use position or the non-use position. Casters may be attached to the stand 15.

Between the bracket 20 provided on the upper surface of the apron (flat plate) 8 and the bracket 21 provided on the body frame 4 side, the rear end of the support arm 22 pivotally supported by the bracket 21 is provided. The lower end is pivotally connected to the upper end of a rod 23 pivotally supported by the bracket 20 to be connected. The tip end of a rotary frame 24 is pivotally supported coaxially with the tip pivotal support of the support arm 22.
It is rotated by 5.

A tip end portion of a spring rod 27 is pivotally attached to a rear end portion of the rotating frame 24, and a rear end side of the spring rod 27 is slidably supported by a rotating piece 26. The compression rod spring 2 is attached to the spring rod 27.
8 is wound. The bracket 21 is provided with a stopper 29 for restricting the downward movement of the rotating frame 24. In addition, the support arm 22 is provided with an insertion / removal pin that is inserted / removed when the rotation frame 24 rotated by the operation lever 25 crosses the pivot point of the support arm 22 as a fulcrum. A pair of flat plate fixing devices having such a configuration are provided on both left and right sides of the rotary scraper 1.

Then, the operation lever 25 is operated to rotate the rotating frame 24 to displace the tip end position of the spring rod 27 and change the urging direction of the compression coil spring 28, whereby the spring rod 27 and the compression coil 27 are compressed. The coil spring 28 includes the support arm 22 and the rod 23.
The flat plate 8 is pressed by the spring rod 27 and the compression coil spring 28 in a free state where the compression coil spring 28 does not press the flat plate 8, and the spring rod 27 and the compression coil spring 28 make the flat plate 8 float. It is switched to the energized state.

On the other hand, at a substantially middle position in the lengthwise direction of the rotary scraper 1, a rear end of a support arm 31 whose front end is pivotally supported by a bracket provided on the body frame 4 side and a lower end thereof are provided at the leveler 9. Rod 29 pivoted on the bracket 9b
It is pivotally connected to the upper end of. The leveler 9 is rotatably supported by a pivot shaft 9a at the rear end of the apron (flat plate) 8, and has an operation handle 33 and a support arm pivotally supported on the upper portion of the machine body so as to rotate in the front-rear direction. 31 is connected by a link arm 34, and the leveler 9 is switched between the leveling position and the earth pulling position by operating the operation handle 33.

In the rotary scraper 1 having such a structure, when crushing and scraping work is performed, the tractor is mounted on the tractor via a three-point link mechanism and introduced into a paddy field for work. The rotary scraper 1 receives power from the tractor, is speed-changed by the gear box, is transmitted from the main body frame 4 to the transmission case 5, and drives the work rotor 6 to perform crushing and scraping work. The soil crushed and scraped by the work rotor 6
Guided by the shield cover 7 and the apron (flat plate) 8, it is discharged to the rear of the work rotor 6 and leveled by the apron 8 and the leveler 9.

The stand 15 is used when the rotary scraper 1 is mounted on a tractor, removed from the tractor, loaded on a bed of a carrier and transported, or stored in a warehouse. When the stand 15 is supported in use, the fixing pin 18 of the connecting portion 16 may be inserted into the support hole from the notch of the notched support hole of the holder 14, and the locking pin 19 may be inserted. When removing the stand 15 from the rotary scraper 1, it is possible to easily remove it by simply removing the locking pin 19 and removing the fixing pin 19 of the connecting portion 16 from the support hole via the notch. When the stand 15 is rotated 180 degrees upward from the use position and held in the non-use position, the locking pin 19 is pulled out, and the stand 15 is rotated 180 degrees about the fixing pin 18 to rotate the locking pin 19. Just plug in.

When crushing and scraping work is carried out by the rotary scraper 1, the apron (level plate) 8 and the leveler 9 are initially moved by their own weights in the vertical direction via the pivot shaft 10 and the center pivot 10a. Perform leveling work while rotating left and right. For this reason, the fixing plate 12 is set to the fixing release position (FIG. 4) where the guide pin 10b is not fixed, and the operation lever 25 is set to the intermediate position to set the free state in which the spring rod 27 and the compression coil spring 28 do not press the flat plate 8. Further, the operation handle 33 is operated to the position indicated by the solid line in FIG. 7, and the leveler 9 is moved to the level (solid line) position to perform the work.

As the scraping work by the rotary scraper 1 progresses, it is better to fix the apron (equal plate) 8 at a horizontal fixed position (FIGS. 1, 3 and 7) or in a horizontally inclined state. In this case, for example, it is fixed as shown in FIG. If it is better to adjust the pressure applied to the apron (flat plate) 8 and the leveler 9, the operating lever 25 is operated to change the position. By this change, the spring rod 27 and the compression coil spring 28 make the flat plate 8 float (weak the pressurizing force) via the support arm 22 and the rod 23 or pressurize the flat plate 8 (the pressurizing force is strong). State) and the desired work is performed according to the state of the field. Further, when it is necessary to soil the scraped soil, the operation handle 33 is rotated to the imaginary line position in FIG. 7 to place the leveler 9 in the soiled state and work is performed.

[0025]

As described above, according to the flat plate fixing method for a rotary working machine of the present invention, the following effects can be obtained.

.. The side plate 5 has a horizontal fitting hole 12a that moves to a fixed position and a fixed release position with respect to the guide pin 10b ,
A fixed plate 12 provided with an inclined fitting hole 12b is pivotally supported to form a flat plate.
Since 8 is released from the fixed state so that it can be swung to the left and right, and is fixed to the three positions of the horizontal state or the left and right inclined state,
The four operations for fixing the level plate 8 to the left-right swingable (free) state and the horizontal state or the left-right tilted state can be easily performed simply by rotating the fixing plate 12 without using a tool. You can Further, in addition to equalizing flat 8 horizontal state, Ru can also be fixed to the right or left inclined position
Therefore, the leveling work performance can be improved.

.. Fixed position fixing plate 12 to the guide pins 10b, when the user moves to the unlocking position, is provided with the locking plate 14 to lock the respective movement positions, the fixing plate 1
The rotary work can be stably carried out in a state where the locking plate 14 securely holds the position 2 at the fixed position and the fixed position.

[Brief description of drawings]

FIG. 1 is a side view of a flat plate fixing means according to the present invention.

FIG. 2 is a partial sectional view of a flat plate fixing means according to the present invention.

FIG. 3 is a side view of the flat plate fixing means according to the present invention in a horizontally fixed state.

FIG. 4 is a side view of the flat plate fixing means in a released state.

FIG. 5 is a side view showing the flat plate fixing means in an inclined fixed state.

FIG. 6 is a side view of another embodiment of the fixing plate according to the present invention.

FIG. 7 is a side view of the entire rotary working machine including the flat plate fixing means according to the present invention.

FIG. 8 is a rear view of the same.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Rotary scraper (rotary working machine) 2, 3 Tractor connecting part 4 Main body frame 5 Transmission case (side plate) 5a Support frame (side plate) 6 Working rotor 7 Shield cover 8 Apron (flat plate) 9 Leveler 9a Bracket 10 Axis support 10a Center pivot 10b Guide pin 11 Guide hole 12 Fixing plate 12a Horizontal fitting hole 12b Inclined fitting hole 12c, 12d Locking hole 12e Second tilted fitting hole 13 Axis 14 Locking plate 14a Engagement projection 15 Stand 16 Stand connecting portion 17 Holder 18 Fixing pin 19 Locking pin 20, 21 Bracket 22 Support arm 23 Rod 24 Rotating frame 25 Operation lever 26 Rotating piece 27 Spring rod 28 Compression coil spring 29 Stopper 30 Bracket 31 Support arm 32 Rod 33 Operation handle 34 Linker Home

Claims (2)

(57) [Claims] 1. A flat plate is mounted on a rear portion of a tractor so as to be able to move up and down through a coupling device, and a flat plate is mounted on a rear portion of a working machine body (2).
(8) is pivotally supported so as to be vertically rotatable and is supported so as to be capable of swinging left and right through a center pivot (10a), and guide pins (10b) provided at both left and right ends of the flat plate (8 ) are operated. The guide holes are inserted into vertical guide holes (11) formed in the side plates (5) provided on both sides of the machine body (2) , and the guide holes are formed.
In the rotary working machine (1) which is swingably supported in the range of (11), the side plate (5) has a horizontal fitting hole ( movable to a fixed position and a fixed release position with respect to the guide pin (10b)) . 12a),
The fixed plate (12) having the inclined fitting hole (12b) is pivotally supported, and the flat plate (8) is released from the fixed state so that it can be swung to the left and right, and is fixed at three positions in the horizontal state or the left and right inclined state. A method for fixing a flat plate of a rotary working machine, characterized in that 2. The fixing plate (12) is attached to the guide pin (10 ).
When moving to the fixed position or the fixed release position with respect to b) ,
Hitoshi flat fixing method of the rotary working machine according to claim 1, characterized in that the locking plate for locking the respective movement positions (14) provided.