JPH084A - Ridge coater - Google Patents

Abstract

PURPOSE:To provide a boarder coating machine capable of securing right and left balance of a machine body, changing the number of vibration of a levee forming plate with a vibrator according to conditions of soil and stably carrying out border coating operation. CONSTITUTION:In a border coating machine which is attached to the rear of a tractor, digs and raises soil near a levee of a field or on the surface of an old levee by a riding rotary pawl 36, raises soil on the levee and coats and solidifies the surface of the levee by vibrating a levee forming plate 25 by a vibrator 24, a hydraulic pump P and a hydraulic oil tank T are arranged at the position opposite to the position of the levee forming plate 25 in the right and left direction and outside from the center of the tractor. A hydraulic motor M is laid at the side of the outside of the vibrator 24. A hose 27 for connecting the hydraulic pump P to the hydraulic motor M is laid while being bent upward. A pump shaft 44 of the hydraulic pump P is equipped with a high and low speed change device and the number of revolutions of the pump shaft 44 can be changed through the high low speed change device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a ridge coating machine for scraping off the surface of an old ridge surrounding a field to newly cover it with mud, for vibration shaping.

[0002]

2. Description of the Related Art Conventionally, a tractor-pulling type is used to excavate the ridges of fields and the surfaces of old ridges with rotating claw members, raise the soil on the ridges, and apply the ridges with a vibration exciter to harden them. A ridge coating machine for forming ridges is known, and for example, the actual kaihei 3-8
This is the same as the technique described in Japanese Unexamined Patent Publication No. 3003 and Japanese Unexamined Patent Publication No. 4-11802. The ridge shaping plate with a vibration exciter of the ridge coating machine can be adjusted up and down with respect to the ridge coating machine body to adjust the ridge height, and the power input from the tractor to the ridge coating machine is excited via a flexible shaft. It was possible to form a new ridge by transmitting it to the machine and vibrating the ridge shaping plate.

[0003]

However, in the above-mentioned prior art, since the input rotational speed, which is the power input from the tractor to the ridge coating machine, is adjusted by the PTO gear shift, the ridge shaping with a vibration exciter. The frequency of the plate was only proportional to the rotation of the soil-pulling rotary, and it was not possible to perform the ridge coating work in the best condition according to the conditions such as the hardness of the soil. Further, since the power was transmitted to the vibration exciter via the flexible shaft, when the engine speed fluctuated, the frequency fluctuated as well. In addition, since the ridge coater is arranged offset to one side behind the tractor,
The protruding side was heavy and it was difficult to balance left and right. Therefore, the present invention, while improving the left-right balance of the machine body, it is possible to change the frequency of the ridge orthopedic plate with a shaker according to the soil conditions, a ridge coating machine that can perform a stable ridge coating work. The purpose is to configure.

[0004]

[Means for Solving the Problems] As a means for solving the above problems, the present invention is mounted on the rear part of a tractor and excavated on the edge of a field and on the surface of an old ridge with a rotating claw member. In a ridge coating machine that raises the soil on the ridge and vibrates the ridge shaping plate with a shaker to coat the ridge surface, a hydraulic pump and hydraulic oil tank are placed on the opposite side of the ridge shaping plate in the left-right direction to shape the ridge. A hydraulic motor is installed on the outer side surface of the vibrator above the plate,
A hose that connects the hydraulic pump and the hydraulic motor is routed around the upper side of the ridge coating machine body, and a transmission is provided on the pump shaft portion of the hydraulic pump so that the rotational speed of the pump shaft can be changed. is there.

[0005]

With this structure, the left and right balance between the ridge shaping plate, the link, the rotary, etc. can be improved by the weights of the hydraulic pump and the hydraulic oil tank arranged at the opposite end of the ridge shaping plate. In order to stabilize the work, with the weight of the hydraulic motor arranged on the upper surface side of the ridge shaping plate, the center of gravity approaches the upper surface side of the ridge shaping plate, the pressure applied during the ridge coating operation increases, and also
The speed of the pump shaft of the hydraulic pump is changed via the speed change device, and the amount of pressure oil supplied from this hydraulic pump to the hydraulic motor is adjusted to control the frequency of the ridge shaping plate vibrated by the vibrator. Can be changed.

[0006]

Embodiments of the present invention shown in the accompanying drawings will be described below. FIG. 1 is a perspective view of a ridge coater, FIG. 2 is a rear view of the same, FIG. 3 is a plan view of the same, and FIG. 4 is a plan sectional view showing a portion of a high / low speed change mechanism in a power transmission box.

Referring to FIGS. 1, 2, and 3, the structure of the ridge coating machine of the present invention will be described. At the rear of the tractor, a top link 46 for mounting working equipment and left and right lower links 47 are provided so as to project. An upper mounting plate 28 and left and right mounting plates 29, 29 project from the front of the power transmission box 30 of the coating machine, and the top link 46 and the left and right lower links 4 are provided.
By mounting the rear end of 7 on the upper mounting plate 28 and the left and right mounting plates 29, 29, the ridge coating machine is mounted on the rear side of the tractor, and by rotating the lift arm 48 of the tractor, the ridge coating machine can be moved up and down. There is. Further, a horizontal sensor 45 is provided on the upper mounting plate 28, and the ridge coating machine can be horizontally controlled by expanding and contracting a cylinder provided on the lift rod.

On the rear surface of the power transmission box 30 of the ridge coater, a hydraulic pump P is provided at an end portion on the left side of the center of the tractor.
And a hydraulic oil tank T for filling the hydraulic oil,
On the right side (offset side) from the center of the tractor, there is a vibrating section including a vibration exciter 24, a ridge shaping plate 25, a hydraulic motor M, and the like via a soil collecting rotary 36 and a link mechanism for excavating the ridge and the ridge A and scraping up the ridge A. A rotary cover 37 is provided. The earth gathering rotary 36 is covered with a guide plate 38 and a rotary cover 37, and the guide plate 38 and the rotary cover 37 guide the soil scraped up by the earth gathering rotary 36 onto the ridge A.

The link mechanism is composed of a fixed link 1, a vibrating portion support link 2, upper, middle, lower three-position links 3, 4, 5, a floating link 6, etc., and a lifting cylinder 21 with an electric motor capable of forward and reverse rotation. The height of the vibration part and the rotary cover 37 can be adjusted by expanding and contracting. The fixed link 1 is fixed to the rear ends of the fixed link support rods 14 and 14 projecting rearward at two diagonally upper and lower positions substantially in the center of the rear surface of the power transmission box 30, and the upper end is inclined toward the vibrating portion side. The elevating cylinder 21 is pivotally supported at the tip of a cylinder support plate 16 fixed to the rear end of the cylinder support rod 15 protruding rearward from the rear surface of the power transmission box 30.

A pivot shaft 7 projects rearward from the lower left end of the fixed link 1, and an upper left end of the lower link 5 is pivotally connected via the pivot shaft 7. The lower right end is pivotally connected to a pivot shaft 8 projecting forward at the lower left end of the vibrating part support link 2, and the rod lower end of the lifting cylinder 21 is pivotally connected to the pivot shaft 8. A pivot shaft 9 projects forward from the upper right end of the vibrating part support link 2, and the lower right end of the upper link 3 is pivotally connected via the pivot shaft 9, and the upper left end of the upper link 3 is A lower end of the floating link 6 is pivotally connected to a pivot shaft 11 protruding forward, and an upper end of the floating link 6 is pivotally connected to a pivot shaft 10 protruding rearward at an upper right end of the fixed link 1. There is. In this way, a substantially parallel link for supporting the vibrating portion is formed, and the elevating cylinder 21 is expanded and contracted to make the vertical link
The link angle between the fixed link 1 and the vibrating part support link 2 of 5 can be changed, and the height of the ridge shaping plate 25 of the vibrating part can be adjusted.

A pivot shaft 8 at the lower right end of the lower link 5 is also provided.
The lower end of the cover support rod 17 is pivotally connected to the cover support rod 17, and the cover support rod 17 is bent so as to have a shape (substantially "V" shape) that does not interfere with the link mechanism and the vibrating portion and is slanted upward. The extended end is attached and fixed to the upper surface of the rotary cover 37 so as to support the rotary cover 37, and the rear end of the marker 26 that sets a target at the corner of the ridge A is attached and fixed to this attachment portion. Has been done.

Then, the pivot shaft 8 of the cover supporting rod 17 is provided.
The lower right end of the center link 4 is pivotally connected to the upper part of the center link via a pivot shaft 13 projecting forward, and the upper left end of the center link projects forward and backward in the middle of the fixed link 1. The pivot support shaft 12 is pivotally connected to the front protruding side of the pivot support shaft 12. The left end of the swing stop plate 18 is pivotally connected to the rear protruding side of the pivot support shaft 12. In this way, the middle link and the lower link are configured as parallel links, and the height of the rotary cover 37 and the marker 26 can be adjusted in synchronization when the height of the vibrating portion is adjusted, and at the time of ridge coating work. The rotary cover 37 and the marker 26 can be fixed even when the vibrating portion is swingable.

An upper end of a lock lever 6a is fixed to the side surface of the floating link 6, and the lock lever 6a is extended downward and the tip portion thereof is bent rearward so that the lock lever 6a is locked rearward from an intermediate portion. A pin 6b is provided so as to project, and the lock pin 6b penetrates a long hole opened on the right side of the rocking stop plate 18. This rocking stop plate 1
A lock arm 19 is urged by a spring to be pivotally supported on the rear surface side of 8, and the lock arm 19 is provided with a cutout portion that fits into the lock pin 6b. The cutout portion is provided on the lock pin 6b. By fitting, rocking (floating) can be locked when a soft ridge is formed at two steps of height. In the link mechanism including the substantially parallel links and the parallel links, the vertical rotation position is regulated by a stopper attached to the lower side surface of the fixed link 1 and a stopper attached to the upper surface of the sled support rod 20. There is.

A spring suspension plate 22 is fixed to the upper end of the vibrating portion support link 2, one end of the springs 23, 23 ... Is fixed to the spring suspension plate 22, and the other end is fixed. The upper part of the shaker 24 is fixed, and a hydraulic motor M is arranged on the outer side surface of the shaker 24 so that its center of gravity is brought close to the upper surface side of the ridge A. A ridge shaping plate 25 having a V-shaped rear view is fixed to a lower portion of the vibrator 24, the hydraulic motor M is connected to a hydraulic pump P via a hose 27, and the hose 27 is Piping is carried out on the upper side of the machine so as not to interfere with the link mechanism or the like so that mud is not covered during the ridge coating work. In this way, the vibrating section is configured, and the pressure oil sucked and discharged from the hydraulic oil tank T by the hydraulic pump P is supplied to the hydraulic motor M, and the vibration motor 24 is driven by the rotation of the hydraulic motor M to shape the ridges. By vibrating the plate 25, it is possible to perform the ridge coating work by pressing the upper surface and the slope of the ridge A with the ridge shaping plate 25.

On the front side of the rotary cover 37, a pretreatment plow 39 for scraping off the soil on the upper surface of the ridge A is disposed. The pretreatment plow 39 is bent forward from the front surface of the power transmission box 30 to the right front side. It is supported by the tip of the provided support arm 43 so that the vertical position can be adjusted. Further, a sled support rod 20 is provided behind the lower surface of the power transmission box 30, and a sled body 40 for supporting the machine body is mounted on the sled support rod 20.
Is slidably supported, and the sled body 40 is provided with a sled lifting handle 41 for adjusting the ground contact height.
In the rear part of 0, a post-processing plow 42 for backfilling the ridges scraped up by the earth-pulling rotary 36 is arranged so that the vertical position can be adjusted.

Next, referring to FIG. 3 and FIG. 4, the drive mechanism of the hydraulic pump P and the earth moving rotary 36 will be described.
In the power transmission box 30, parallel to the input shaft 31,
Counter shaft 32, clutch shaft 33, and rotary shaft 34
Bearings are supported, and on the input shaft 31, a sprocket 51 for driving the rotary and two sprockets 52, 53 of the same diameter (having the same number of teeth) for driving the pump are fixedly mounted. A tension sprocket 50 for tensioning the chain 35 is fixedly mounted on the clutch shaft 33, and a bearing 54 and two sprocket wheels 55 and 56 for pump height change are loosely fitted on the clutch shaft 33. A sprocket 57 is fixedly mounted on.

The input shaft 31 is projected forward from the power transmission box 30, and the input shaft 31 has a P of a tractor.
The power from the TO shaft is transmitted through the universal joint shaft, the rotary shaft 34 is projected rearward from the power transmission box 30, and the earth gathering rotary 36 is radially planted on the protruding portion. A chain 35 is wound around the sprockets 50, 51, 57 and the bearing 54 of the four shafts, and power is transmitted from the input shaft 31 to the rotary shaft 34 via the chain 35 to drive the earth-powder rotary. I am trying. However, the chain 35 is idle around the clutch shaft 33 via the bearing 54. Further, the two sprockets 52 and 53 on the input shaft 31 and the two sprockets 55 and 56 on the clutch shaft 33 respectively have chains 58 and 53, respectively.
59 are wound.

The clutch shaft 33 is pipe-shaped, the pump shaft 44 of the hydraulic pump P is inserted and fixed from the rear end side, and the tip end of the shifter 60 is inserted from the front end side, and the shifter 60 and the sprockets 55 and 56 are inserted. A ball clutch is formed between and by balls 61 and 62, which are respectively fitted in holes opened in the clutch shaft 33, so as to be able to come into contact with and separate from the clutch shaft 33, and the base portion of the shifter 60 is a power transmission unit. The shift lever 63 is projected from the front surface of the box 30, and a shift lever 63 is pivotally connected to the end of the box 30. The shift lever 63 is provided with a lever support rod 64 protruding from the front surface of the power transmission box 30.
Is pivoted at the tip of. Further, a ball 65, which is biased by a spring and abuts on the shifter 60 side, is interposed between a midway portion of the shifter 60 and the bearing portion 49 on the front surface side of the power transmission box 30 to form a detent. And
The shifter 60 can be positioned at two positions, and the shifter 63 is rotated to allow the shifter 60 to slide within the clutch shaft 33.

That is, in the left half state of the shifter 60 shown in FIG. 4, the clutch shaft 33 and the high-speed sprocket 55 are in "contact" with each other through the ball 61, and the low-speed sprocket 56 is idle. Become,
From the input shaft 31 to the sprocket 52, the chain 58,
Power is transmitted to the clutch shaft 33 via the high-speed sprocket 55, and the pump shaft 44 is driven at high speed. And
When the right half of the shifter 60 shown in FIG. 4 is set (when the shift lever 63 is rotated and the shifter 60 is slid and pushed inward), the clutch shaft 33 and the low-speed sprocket 56 move the ball 62. The "high speed" sprocket 55 becomes idle, and the input shaft 31 to the sprocket 53 and the chain 5
9. The power is transmitted to the clutch shaft 33 via the low speed sprocket 56, and the pump shaft 44 is driven at a low speed. However, in the present embodiment, the gear shift is performed in two steps, but it may be higher.

In this way, the shift lever 63 is operated to rotate so that the rotational speed of the pump shaft 44 can be changed to high or low, whereby the amount of pressure oil supplied from the hydraulic pump P to the hydraulic motor M is changed in two steps. The exciter 24 can be
It becomes possible to change the frequency of the ridge shaping plate 25 vibrated through the two steps in two steps, and therefore, it is possible to perform the ridge coating work in an optimum state corresponding to the change in soil quality. Further, even in a model in which the power output from the PTO shaft cannot be changed, when the ridge coating machine of the present invention is mounted, the frequency of the ridge shaping plate 25 can be changed in two steps.

[0021]

Since the present invention is configured as described above, it has the following effects. In other words, by arranging the hydraulic pump and the hydraulic oil tank at the end opposite to the ridge shaping plate, it is possible to improve the left-right weight balance of the ridge coating machine and stabilize the running and posture, and stabilize. You can perform the ridge coating work. Further, by arranging the hydraulic motor on the outer side surface of the vibration exciter and connecting the hose connecting the hydraulic pump and the hydraulic motor to the upper surface side of the machine body, the center of gravity of the hydraulic motor approaches the upper surface side of the ridge shaping plate, Since the vertical pressurizing weight during the ridge coating operation becomes large, it is possible to surely apply and solidify.

Further, since the rotational speed of the pump shaft of the hydraulic pump can be changed through the high and low speed change device, the amount of pressure oil supplied from the hydraulic pump to the hydraulic motor is adjusted, and the exciter is used. It is possible to change the vibration frequency of the ridge shaping plate that is vibrated, and adjust the frequency of the ridge shaping plate according to the soil condition such as soft soil or hard soil, and efficiently perform the ridge coating work. be able to. In addition, since the hose is connected to the upper surface of the machine body, the hose is not covered with soil during the ridge coating work, so that the hose is not damaged and the durability can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a ridge coater.

FIG. 2 is a rear view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a plan sectional view showing a portion of a high / low speed change mechanism in a power transmission box.

[Explanation of symbols]

 24 Exciter 25 Ridge Shaping Plate 27 Hose 30 Power Transmission Box 31 Input Shaft 33 Clutch Shaft 44 Pump Shaft M Hydraulic Motor P Hydraulic Pump T Hydraulic Oil Tank

Claims (1)

[Claims] 1. A tractor is attached to the rear part of the tractor, the ridges of the field and the surface of old ridges are excavated by rotating claw members to raise the soil on the ridges, and the ridge shaping plate is vibrated by a vibrating machine to vibrate the ridges. In a ridge coater that hardens the surface, a hydraulic pump and hydraulic oil tank are arranged on the opposite side to the ridge shaping plate, and a hydraulic motor is arranged on the outer side surface of the vibrator above the ridge shaping plate. A hose that connects the pump and the hydraulic motor is routed around the upper side of the ridge coating machine body, and a transmission is provided on the pump shaft portion of the hydraulic pump so that the rotational speed of the pump shaft can be changed. Ridge coating machine.