JP7141713B2 - ridge coating machine - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ridge coating machine used by being connected to a traveling vehicle.

BACKGROUND ART Conventionally, a ridge coating machine described in, for example, Patent Document 1 below is known. In this conventional ridge coating machine, the side cover body that restricts the lateral movement of the embankment by the embankment body (pretreatment body) can be vertically moved by parallel links (two arms that are parallel to each other and have the same length). The height adjustment of the side cover body is automatically performed by supporting the side cover body.

JP-A-11-46508

However, in the conventional ridge coating machine, for example, when the plowing depth of the embankment body is increased, the side cover body assumes a forward-downward inclined posture. The embankment by the embankment body may leak to the side.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a ridge coating machine capable of preventing lateral leakage of embankment by an embankment body.

A ridge coating machine according to claim 1 is a ridge coating machine that is used by being connected to a traveling vehicle, and comprises an embankment body for plowing and heaping soil, and a ridge for forming a ridge by compacting the embankment by the embankment body. A formation body and a side cover means for restricting the lateral movement of the embankment by the embankment body, the side cover means being arranged non-parallel to each other and having mutually different lengths and capable of vertical rotation. It has an arm, a lower arm, and a side cover body supported by these upper arm and lower arm.

According to the ridge coating machine of claim 2, in the ridge coating machine of claim 1, the side cover body maintains a horizontal posture even when the plowing depth of the embankment body is increased, and the ridge coating machine is moved by the traveling vehicle. When lifted, the side cover body changes its posture from a horizontal posture to a forward-downward inclined posture, but the amount of forward movement of the side cover body at this time is small.

The ridge coating machine according to claim 3 is the ridge coating machine according to claim 2, further comprising a ridge surface scraping body located in front of the embankment body, and when the ridge coating machine is lifted by the traveling vehicle, the side cover body The amount of forward movement when the side cover body changes its posture from the horizontal posture to the forward-downward inclined posture is small enough to prevent the side cover body from interfering with the ridge surface scraping body.

The ridge coating machine according to claim 4 is the ridge coating machine according to any one of claims 1 to 3, further comprising an embankment body cover body for covering the embankment body, and each front end of the upper arm and the lower arm Each rear end portion of the upper arm and the lower arm is rotatably attached to the side cover body.

A ridge coating machine according to claim 5 is the ridge coating machine according to any one of claims 1 to 4, wherein the side cover means restricts the downward movement of the side cover body by engaging with the upper arm or the lower arm. It has a stopper body.

The ridge coating machine according to claim 6 is the ridge coating machine according to any one of claims 1 to 5, wherein the side cover body escapes upward by substantially parallel movement when coming into contact with an obstacle on the top surface of the ridge. It is.

ADVANTAGE OF THE INVENTION According to this invention, the embankment by an embankment body can be prevented from leaking to the side.

1 is a plan view of a ridge coating machine according to a first embodiment of the present invention; FIG. Fig. 3 is a partial plan view of the same ridge coating machine; Fig. 2 is a side view of the same ridge coating machine (standard work state); Fig. 2 is a side view of the same ridge coating machine (with a deep plowing depth); It is a side view (lifted state) of the ridge coating machine same as the above. (a) and (b) are both side views of comparative examples using parallel links. FIG. 10 is a side view (standard operating state) of the ridge coating machine according to the second embodiment of the present invention; Fig. 2 is a side view of the same ridge coating machine (with a deep plowing depth); It is a side view (lifted state) of the ridge coating machine same as the above. FIG. 11 is a side view (standard operating state) of a ridge coating machine according to a third embodiment of the present invention; Fig. 2 is a side view of the same ridge coating machine (with a deep plowing depth); It is a side view (lifted state) of the ridge coating machine same as the above. Fig. 2 is a side view of the same ridge coating machine (a state in which an obstacle is avoided); FIG. 3 is a reference diagram showing loci of rotation fulcrums of two arms in the same ridge coating machine.

A first embodiment of the present invention will be described with reference to FIGS. 1 to 6. FIG.

Numeral 1 in the figure is a ridge coating machine, and this ridge coating machine 1 is used by being connected to the rear part of a tractor (not shown) which is a traveling vehicle. In other words, the ridge coating machine 1 is connected to the rear part of the tractor, and moves in the traveling direction (forward) as the tractor travels forward to perform the ridge coating work (ridge repair work). However, at the corner of the field, the ridge coating machine 1 is set to the return work state, so that the ridge coating work can be performed by back traveling of the tractor. The directions shown in FIG. 1, FIG. 3, etc. are defined as the front/rear, left/right, and up/down directions of the ridge coating machine 1. As shown in FIG.

Although not shown, the tractor is provided with a three-point link (hydraulic work machine mounting device) as a work machine connection at the rear of the tractor body. A ridge coating machine 1 is connected to the 3-point link portion via a quick coupler, and the ridge coating machine 1 moves up and down based on the operation of the 3-point link portion. In other words, the tractor is equipped with a three-point link at the rear, which is a work machine connecting part that can raise and lower the ridge coating machine 1. The machine 1 is lifted to a predetermined height position (lifting position) by upward rotation of the three-point link portion, and assumes a forward tilting posture (for example, a forward tilting posture of 25°).

As shown in FIGS. 1 to 3, the ridge coating machine 1 has a body 2 detachably connected to a three-point link at the rear of the tractor, and rotates in a predetermined direction to cover the top surface of the ridge (original ridge). A ridge top surface scraping body 3 to be scraped, an embankment body 4 for plowing and heaping up the soil of the paddy field and the ridge (original ridge) while rotating in a predetermined direction behind the ridge top surface shaving body 3, and a predetermined area behind the embankment body 4. A ridge forming body 5 is provided for compacting the embankment by the embankment body 4 while rotating in the direction to form a ridge (new ridge). A working means 6 is composed of the ridge surface scraping body 3, the embankment body 4 and the ridge forming body 5. As shown in FIG.

The ridge forming body 5 includes a frustoconical ridge side forming portion (disk) 8 that compacts the embankment to form an inclined ridge side surface, and a cylindrical ridge forming portion (disk) 8 that compacts the embankment to form a horizontal ridge top surface. and a ridge upper surface forming portion (upper surface roller) 9 .

In addition, the ridge coating machine 1 includes a shaving body cover body 11 that covers the ridge top surface shaving body 3, an embankment body cover body 12 that covers the embankment body 4, and a ridge formation body cover that covers the ridge side formation portion 8 of the ridge formation body 5. a body 13; On the right side of the embankment body cover body 12, a side for restricting the movement of the embankment to the side (right side) by the embankment body 4 is provided so that a desired amount of embankment is supplied to the ridge upper surface forming part 9. A cover means 15 is provided.

The body 2 has a machine frame 21 detachably connected to a three-point link at the rear of the tractor, and an input shaft 23 is rotatably held by a shaft holding portion 22 of the machine frame 21 . The input shaft 23 is connected to the PTO shaft of the tractor via a joint, and the power input to the input shaft 23 causes the working means 6 to operate. A movable machine frame 25 supporting the working means 6 is connected to the machine frame 21 via a connecting means 26, and the movable machine frame 25 rotates in the lateral direction with respect to the machine frame 21 by the operation of a cylinder 27. . Further, the movable machine frame 25 is provided with a directional wheel 28 in addition to the ridge surface scraping body 3, the embankment body 4, the ridge forming body 5, and the like.

The ridge top scraping body 3 has a rotating shaft 31 provided on the chain case portion 29 on the front end side of the movable machine frame 25 and a plurality of scraping claws 32 provided on the rotating shaft 31 . As is clear from FIG. 3, the ridge surface scraping body 3 is positioned near the front of the embankment body 4 in a side view. That is, the scraping claws 32 of the ridge surface scraping body 3 and the plowing claws 37 of the embankment body 4 are located close to each other.

The embankment body 4 has a rotary shaft (tillage shaft) 36 provided on the chain case portion 30 of the movable machine frame 25 and a plurality of tillage tines 37 provided on the rotary shaft 36 . The chain case portion 30 is vertically rotatable so that the front end side moves up and down about the pivot point 33 on the rear end side, that is, the axis of the transmission shaft 34. The intermediate portion of the chain case portion 30 is connected with adjusting means (plowing depth adjusting means) 38 for adjusting the plowing depth of the embankment body 4 . A mounting pipe portion 41 is erected at the front end portion of the chain case portion 30, and the frame portion 42 of the embankment body cover body (tillage section cover) 12 is mounted on the mounting pipe portion 41. As shown in FIG. The embankment body cover body 12 has a frame portion 42, a cover body portion 44 supported by the frame portion 42, and a mounting plate portion 10 attached to the side surface of the cover body portion 44. As shown in FIG.

The adjusting means 38 has a handle 39 at its upper end, and the operator can adjust the plowing depth of the embankment body 4 by rotating the handle 39 . That is, based on the rotating operation of the handle 39, the embankment body 4 rotates up and down around the rotation fulcrum 33 together with the embankment body cover body 12, the ridge top scraping body 3, etc. As a result, the ridge formation body 5 of the embankment body 4 is rotated. The plowing depth of the embankment body 4 is set by changing the position in the vertical direction with respect to .

Here, FIG. 3 is a diagram showing a standard work state in which the plowing depth of the embankment body 4 is set to the standard. or slightly higher than that. FIG. 4 shows a state in which the plowing depth of the embankment body 4 is set deeper than the standard. In this state, the lower end of the embankment body 4 is located below the lower end of the ridge formation body 5 do.

The side cover means 15 includes two vertically rotatable longitudinal upper arms 51 and lower arms 52 which are arranged non-parallel to each other and have different lengths. It has a longitudinal plate-like side cover body (cover plate) 53 which is supported by an arm 52 and located on the ridge side of the embankment body cover body 12 . Note that the two arms (rotating arms) 51 and 52 having different lengths, which are arranged non-parallel to each other, may be positioned parallel to each other within the rotating range.

In this side cover means 15, the upper arm 51 is shorter than the lower arm 52, but the longitudinal length of the upper arm 51 is less than half the longitudinal length of the lower arm 52. too long.

The front ends of the upper arm 51 and the lower arm 52 are attached to the mounting plate portion 10 of the embankment cover body 12 so as to be rotatable about pivot points 56 and 57, respectively. Each rear end portion of the lower arm 52 is attached to an intermediate portion in the front-rear direction of the side cover body 53, that is, near the center in the front-rear direction, so as to be rotatable about pivot points 58 and 59, respectively (see FIG. 3). reference). Therefore, the side cover body 53 changes its posture based on the vertical rotation of the two arms 51 and 52 with respect to the embankment body cover body 12 (the positional relationship with respect to the embankment body cover body is changed). It moves up and down with respect to the unchanging embankment body) 12.

The side cover body 53 is, for example, in a substantially rectangular plate shape having a longitudinal direction in the front-rear direction in a horizontal posture along the upper surface of the ridge (specifically, for example, the upper and lower ends and the front end of a substantially rectangular plate-like member are reinforced). The lower side of the front end portion of the side cover body 53 is formed in a curved shape. Further, in the standard work state shown in FIG. 3, the side cover body 53 is in a horizontal posture (a posture in which the lower edge of the side cover body 53 is positioned along the horizontal top surface of the ridge) and follows the top surface of the ridge. As shown in FIG. 3, the pivot point 59 of the rear end of the lower arm 51 is positioned below (immediately below) the pivot point 58 of the rear end of the upper arm 51 in a side view.

At the rear end of the side cover body 53, a plate-like movable cover body 62 is provided rotatably in the left-right direction via a rubber plate 61 which is an elastic plate that can be elastically deformed. The angle of the movable cover body 62 with respect to the side cover body 53 can be adjusted by an angle adjusting plate 63. As shown in FIG. That is, the front end side of the angle adjusting plate 63 is attached to the front mounting plate 64 projecting from the side cover body 53 via the pin 65, and the rear end side of the angle adjusting plate 63 is attached to the movable cover body 62. It is attached via a pin 67 to a protruding rear mounting plate 66 . The operator can adjust the angle of the movable cover body 62 by selecting the mounting holes 68 into which the pins 65 and 67 are inserted.

Next, the operation and the like of the ridge coating machine 1 will be described.

When the ridge coating work is performed using the ridge coating machine 1, the work is normally performed in the standard work state shown in FIG.

In the standard work state shown in FIG. 3, the side cover body (soil leakage prevention member) 53 of the side cover means 15 assumes a horizontal posture while being placed on the upper surface of the ridge, and follows the upper surface of the ridge. The lateral movement of the embankment by the body 4 is restricted.

As a result, a desired amount of embankment is supplied to the ridge top surface forming portion 9 of the ridge forming body 5, thereby forming a strong ridge top surface with desired hardness.

Here, for example, as shown in FIG. 4, even when the chain case portion 30 is rotated downward by operating the handle 39 to deepen the plowing depth of the embankment body 4, the side cover body 53 remains in a horizontal posture ( (including a nearly horizontal position). In other words, when the plowing depth of the embankment body 4 is increased, the side cover body 53 is arranged to maintain the horizontal posture based on the upward rotation of the two arms 51 and 52. 4) move up against 12; In addition, the horizontal posture here is not limited to a horizontal posture in the strict sense, and is a substantially horizontal posture slightly inclined (for example, the inclination angle to the horizontal direction is 5 ) are also included.

Therefore, in a configuration in which the side cover body 53 is supported by parallel links (two arms a and b that are parallel to each other and have the same length) as shown in FIG. A gap S larger than a predetermined value is formed between the side cover body 53 and the upper surface of the ridge, which may cause a problem that the embankment leaks sideways. Therefore, a desired amount of embankment can be supplied to the ridge upper surface forming portion 9 of the ridge forming body 5 .

Further, as shown in FIG. 5, for example, when the entire ridge coating machine 1 is lifted to a predetermined height position by the three-point link of the tractor, the side cover body 53 is placed against the embankment body cover body 12. The side cover body 53 moves downward to change its attitude from the horizontal attitude to the forward-downward tilted attitude, but the amount of forward movement A of the side cover body 53 at this time is small. In other words, the amount of forward movement A is small enough so that the front end portion of the side cover body 53 in the inclined position does not interfere with the front ridge surface scraping body (front member) 3 .

Therefore, in the structure in which the side cover member 53 is supported by parallel links (two arms a and b that are parallel to each other and have the same length) as shown in FIG. , the side cover body 53 may approach and interfere with the ridge top scraping body 3, but such a problem does not occur in the present embodiment. That is, the amount of forward movement A of the side cover body 53 is smaller than the amount of forward movement B in FIG. interference can be prevented.

In the lifted state shown in FIG. 5, the side cover body 53 is inclined forward downward and is positioned at the lower limit position (lowest position). The rear end portion is regulated by abutting on the lower arm 52 .

Therefore, according to the above-described ridge coating machine 1, when the plowing depth of the embankment body 4 is increased, the side cover body 53 does not follow the top surface of the ridge and the embankment by the embankment body 4 is prevented from leaking to the side. Moreover, it is possible to prevent the side cover body 53 from interfering with the ridge surface scraping body 3 when the ridge coating machine 1 is lifted by the three-point link part of the tractor.

The front ends of the non-parallel upper arm 51 and lower arm 52 having different lengths are rotatably attached to the embankment body cover body 12, and each of the upper arm 51 and the lower arm 52 Since the rear end portion is rotatably attached to the side cover body 53, leakage of the embankment to the side can be properly prevented, and interference between the side cover body 53 and the ridge surface scraping body 3 can be properly prevented. can be prevented.

In the first embodiment, the upper arm 51 is shorter than the lower arm 52. However, as in the second embodiment shown in FIGS. It may be configured to be longer than the side arm 52 .

In the structure of the second embodiment, the lower arm 52 is shorter than the upper arm 51, but the longitudinal length of the lower arm 52 is the same as the longitudinal length of the upper arm 51. longer than half. In addition, the amount of forward movement A in FIG.

Also in the second embodiment, the embankment by the embankment body 4 can be prevented from leaking to the side, and the side cover body 53 can be prevented from interfering with the ridge surface scraping body 3. Effects similar to those of the embodiment can be obtained.

Further, in the first and second embodiments, the configuration in which the rear end of the upper arm 51 abuts (engages) the lower arm 52 to restrict the downward movement of the side cover body 53 has been described. However, as in the third embodiment shown in FIGS. 10 to 14, the front end of the lower arm 52 abuts (engages) with a pin-shaped stopper 71 to move the side cover 53 downward. may be regulated. The stopper body 71 protrudes from the mounting plate portion 10 of the embankment body cover body 12 . Although not shown, it is also possible to restrict the downward movement of the side cover body 53 by contacting (engaging) the front end of the upper arm 51, not the lower arm 52, with the stopper body. be.

In the third embodiment, as in the first embodiment, the upper arm 51 is shorter than the lower arm 52, and the forward movement amount A in FIG. It is small enough not to interfere with the scraping body 3.

Further, in the third embodiment, the rear end portions of the upper arm 51 and the lower arm 52 are respectively turned to the front-rear intermediate portion of the side cover body 53, that is, to the rear side of the front-rear central portion, for example. It is attached so as to be rotatable around the dynamic fulcrums 58 and 59 .

The reference diagram shown in FIG. 14 shows the trajectories of the two rear pivot points 58 and 59. As is clear from this reference diagram, when the side cover body 53 is on the lower side (stopper When the side cover body 53 moves slightly upward, the angle change becomes small (for example, 1° or less). Further, there is a portion where the trajectory of the pivot point 58 of the upper arm 51 and the trajectory of the pivot point 58 of the lower arm 52 are similar.

Therefore, in the first and second embodiments, the rear side of the side cover body 53 is not lifted, and even if there is an obstacle on the upper surface of the ridge, it cannot escape upward. On the lower side of the rotation range of the side cover body 53, the side cover body 53 moves relative to the embankment body cover body 12 so as to follow the top surface of the ridge. 1), the side cover body 53 can escape upward by movement similar to a parallel link (substantially parallel movement) (see FIG. 13).

Also in the third embodiment, the embankment by the embankment body 4 can be prevented from leaking to the side, and the side cover body 53 can be prevented from interfering with the ridge surface scraping body 3. Effects similar to those of the embodiment can be obtained.

For example, although not shown, the side cover means in the first and second embodiments may have a stopper body that restricts downward movement of the side cover body by engagement with the upper arm or the lower arm.

Also, for example, in the third embodiment, it is possible to form the upper arm 51 longer than the lower arm 52 .

Further, for example, although not shown, the front ends of two arms may be attached to the frame portion of the embankment body cover.

Further, the adjustment means 38 is not limited to a manual type having a handle 39, and may be adjusted by an electric or hydraulic actuator (not shown).

Although several embodiments and their modifications of the present invention have been described, it is also possible to appropriately combine the above-described embodiments and modifications without departing from the gist of the present invention.

1 Ridge coating machine 3 Ridge surface scraping body 4 Filling body 5 Ridge forming body
12 Embankment body cover body
15 side cover means
51 upper arm
52 lower arm
53 side cover body
71 stopper body

Claims (6)

A ridge coating machine used by being connected to a traveling vehicle,
An embankment body that plows and raises the soil,
a ridge forming body that compacts the embankment by the embankment body to form a ridge;
a side cover means for restricting lateral movement of the embankment by the embankment body;
The side cover means
two vertically rotatable upper and lower arms arranged non-parallel to each other and having different lengths;
A ridge coating machine characterized by having a side cover body supported by these two upper arms and lower arms. A ridge coating machine used by being connected to a traveling vehicle,
An embankment body that plows and raises the soil,
a ridge forming body that compacts the embankment by the embankment body to form a ridge;
a side cover means for restricting lateral movement of the embankment by the embankment body;
An embankment body cover body covering the embankment body,
The side cover means
two vertically rotatable upper and lower arms arranged non-parallel to each other and having different lengths;
a side cover body supported by these two upper arms and lower arms,
front ends of the upper arm and the lower arm are rotatably attached to the embankment cover body;
Each rear end of the upper arm and the lower arm is rotatably attached to the side cover body.
A ridge coating machine characterized by: Equipped with a ridge surface scraping body located in front of the embankment body,
When the ridge coating machine is lifted by the traveling vehicle, the amount of forward movement of the side cover body when changing its posture from the horizontal posture to the forward-down inclined posture does not interfere with the ridge top scraping body. 3. The ridge coating machine according to claim 1 or 2, wherein the ridge coating machine is approximately small. The two upper arms and the lower arms are arranged so as to overlap each other in a plan view.
A ridge coating machine according to any one of claims 1 to 3, characterized in that: The ridge coating machine according to any one of claims 1 to 4, wherein the side cover means has a stopper body that restricts downward movement of the side cover body by engagement with the upper arm or the lower arm. The ridge coating machine according to any one of claims 1 to 5, wherein the side cover body escapes upward by substantially parallel movement when it comes into contact with an obstacle on the upper surface of the ridge.

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