JPS6016667Y2 - Vibratory shank support device for vibratory subsoil crusher - Google Patents

Description

[Detailed explanation of the invention] This invention is a vibrating device that moves the shank holding the digging tool while swinging back and forth using the power of the tractor body to excavate the soil or drill into the ditch. This device relates to a swinging shank support device for a subsoil crusher, and prevents wear and damage to the connection between the shank bracket that holds the shank and the crank rod that swings the shank, and allows the equipment to last for a long time. The purpose of this is to configure the device so that it can operate well and reliably.

Hereinafter, the present invention will be described in detail with reference to specific examples shown in the drawings.

Inside the input bevel case 1, a vertical input shaft 2 and a passive shaft 3 perpendicular thereto are rotatably supported via bearings, and both shafts 2 and 3 are connected by a bevel gear 4.5. At the same time, hollow cylindrical bodies 6 and 7 are attached to the left and right sides of the bevel case, and these constitute a main beam M, and a mounting part 8 is provided to extend forward to this main beam M. The lower link 9 and the upper link 10 of the three-point link hitch mechanism of the tractor body are connected, and the input shaft 2 is connected to the P of the tractor body through a universal joint.
It is connected to the TO axis.

The front ends of fixed frames 11 and 11, each having a box-shaped cross section, are fixed to the hollow cylinders 6 and 7 of the main beam M, respectively, and extend toward the rear with the road ends thereof. .12 is extended, and the arm 14.14 holds the gauge wheels 13, 13 rotatably on these.
is installed so that its vertical position can be changed freely.

The fixed frames 11 and 11 are connected by a sub-beam S extending parallel to the main beam M at a suitable location, and the sub-beam S and the main beam M are reinforced and connected by a connecting body 15.

A camshaft 16 having an eccentricity (f) is rotatably supported inside the front ends of the fixed frames 11, 11 by bearings, and the support center of this shaft is approximately aligned with the axis of the main beam driven shaft 3. Both shafts 16 and 3 are interlocked and connected by a connecting shaft cylinder 17 having a shaft joint inside the hollow cylinder body.

Further, a swinging fulcrum shaft 18 is horizontally supported at the lower part of the extending rear end of the fixed frame 11 (see FIG. 5), and the lower front end of the shank bracket 19 is swingably supported thereon. A connecting portion 20 is formed at the front upper part of the shank bracket 19, and the other end of a crank rod 21, one end of which is attached to the aforementioned camshaft 16, is pivotally connected to the connecting portion.

The detailed structure of this pivot connection is as shown in FIG. 6 in cross-section.

In other words, the left and right wall materials 1 forming the shank bracket 19
9a and 19b are provided with shaft support holes 22, 22 so that a crank pin 23 can be inserted and supported in the shaft support holes 22, 22, and a connecting metal 24 at the rear end of the crank rod 21 is inserted into the center of this pin 23. , the shaft support hole 24a is inserted through and connected to the bushing 25, and both ends of the crank pin 23 are connected to the left and right wall members 19a.

Adjustment fitting engagement groove 26.
26 is provided.

The shank bracket 1 is provided in the engagement grooves 26, 26.
The small diameter holes of the daruma holes 29, 29 formed in the regulating plates 28, 28 of the adjustment fittings 27, 27 installed on the left and right outer walls of the housing 9 are made to engage with each other.

In addition, the adjustment fitting 27.27 is the above-mentioned regulation plate 28.2.
The adjustment bolt part is supported by the mounting part 31.31 which projects perpendicularly to the outside of the left and right wall materials 19a and 19b, and the adjustment nut 32.33 is used to adjust the left and right parts. It can be moved along the outside of the wall materials 19a, 19b to adjust and fix the position.

Further, the shank bracket 19 is provided with a mounting sheath part 34, into which the base of the shank 25 is inserted and mounted with a bolt so that the mounting position can be changed.
A cutting tool 37 such as a chisel is fixed to the lower end of the cutting tool 36, and a bullet-shaped hole is formed in the shank 35 immediately behind the drilling tool through a fitting 38. A molded body 39 is detachably attached thereto.

Next, the operation of the apparatus configured as described above will be explained.

When the tractor body equipped with the device moves forward, the shank 3
5 penetrates into the soil to a required depth while cutting the soil, maintains the depth with the gauge foil 13, and causes the excavator 37 and the compact 39 at the tip of the shank to take a posture for performing drilling and forming operations.

When the power of the tractor body is transmitted to the cam shank 16 via the input shaft 2, the passive shaft 3, and the connecting shaft cylinder 17, the crank rod 21 connected to the shank repeats the crank motion and holds the shank 35. The shank bracket 19 is reciprocated in the front and rear directions around the swing fulcrum shaft 18, and the shank 35 and the excavating tool 37 at its tip are swung at a predetermined amplitude. By means of the perforated body 39 that follows the sides, it is possible to form an underdrain with a circular cross section.

The underdrain is formed by the above-mentioned operation, but when installing the shank bracket 19 on the fixed frame 11 during device construction, the crank pin 23, which is connected to the connecting metal 24 of the crank rod, is inserted into the shaft support holes 22, 22. death,
Adjustment fittings 27. Darma holes 2 of the regulation plate of 27
9.29 Match the large diameter parts and fit them into the locking grooves 26, 2.
6 with the regulation plate 28.28, and then tighten the adjustment bolt 30.30 to move the locking groove 26 to engage with the small diameter part of the daruma hole 29 and fix it to prevent it from coming off. Therefore, the adjustment bolt 3
By adjusting and setting the tightening amount of 0.30 for each left and right side, the crank pin 23 and the shaft support holes 24a, 22, 22
This ensures a uniform fit with no looseness.

Therefore, during operation, the impact load on the crank pin is extremely reduced, and durable operation can be achieved over a long period of time.

In addition, even if the fitting part becomes loose due to wear during long-term use, you can adjust the tightening of the adjustment bolt 30.30 of the above-mentioned M fitting 27.27. , it can be very easily corrected to a state without backlash, making it even more convenient to use.

As described above, the present invention provides a vibratory subsoil crushing machine configured using a swinging shank, in which the shank bracket that holds the shank is attached to a fixed frame so as to be rotatable about the swinging fulcrum axis, and the swinging A crank rod for swinging the bracket is connected to a crank pin supported on another part of the shank bracket at an appropriate distance from the dynamic fulcrum part, and both ends of the crank pin protrude outward from the left and right walls of the shank bracket. The daruma holes of the regulation plates in the adjustment fittings were engaged with the engagement grooves of the adjustment fittings, and each regulation plate was moved individually toward the mounting part on the bracket side using the adjustment bolts extending from each plate and fixed under tension. From the adjustment bolts 30.30 of the position adjustment fittings 27.27 provided on the outside of the left and right walls of the shank bracket.
By adjusting and setting the amount of tightening for each left and right side, the crank pin 23 and the shaft support hole can be fitted with equal contact on the left and right without play, and the crank pin can be tightened evenly on the left and right sides during operation. The impact load is extremely small, and durable operation can be achieved over a long period of time.

In addition, even if the fitting part becomes loose due to wear during long-term use, this can be easily corrected by retightening the adjustment bolt, making it more convenient to use for longer periods of time. It can be used for.

[Brief explanation of the drawing]

Fig. 1 is a side view of the device according to the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a side view showing an enlarged main part of Fig. 1, and Fig. 4 is an exploded cross-section showing the transmission mechanism. 5 is a sectional view taken along the line XX in FIG. 3, and FIG. 6 is an enlarged view of the Y section in FIG. 4. M...Main beam, 11...Fixed frame, 1
6・Song・Camshaft, 1B...Rolling support a&1
9... Twink bracket, 21... Crank rod, 22... Shaft support hole, 23...
・・Crank pin, 24・・Curved linkage, 26・・・・
・Engagement groove, 27...Adjustment fitting, 28...
・Regulation plate, 29... Daruma hole, 30...
・Adjustment bolt, 35...Shank, 37
...Drilling tool, 38...Drilling molded body.

Claims (1)

[Scope of utility model registration request] In a vibrating subsoil crusher configured using a swinging shank, a shank bracket 1 that holds the shank 35
The fixed frame 1 is fixed so that the 9 can be rotated around the swinging fulcrum shaft 18.
A crank rod 21 for swinging the bracket 19 is connected to a crank pin 23 supported on another part of the shank bracket at an appropriate distance from the swing fulcrum shaft 18, and a crank rod 21 for swinging the bracket 19 is attached to the left and right walls of the shank bracket. Engagement grooves 26 on both ends of the crank pin projecting outward from the crank pin.
26 is the regulation plate 28.28 in the adjustment fitting 27.27.
The adjustment bolts 30 and 30 extending from each regulation plate are individually moved in the direction of the mounting portion 31 and 31 on the bracket side and fixed under tension. Features a swinging shank support device.