KR200173226Y1 - Disk plow of tractor - Google Patents

Abstract

The present invention relates to a disc plow for a tractor, the purpose of which is to facilitate the assembly and disassembly of the sprocket unit mounted on the disc mounting shaft in the central support frame.

The present invention is formed larger than the outer diameter so that the sprocket installation hole 41a of the central support frame 40 can be installed in the center line direction of the sprocket 42a of the sprocket unit U in order to achieve the above object, the sprocket unit ( The disc mounting shaft 49 is installed to be rotated by the bearing 50 on the same center line as the bevel gear 48 meshing with the bevel gear 45 forming U), and the bevel gear 48 is sprocket unit (U). The housing 47a, which is fitted into the sprocket installation holes 41a on both sides of the central support frame 40 while being engaged with the bevel gear 45 of the housing while accommodating the bearing 44 outer surface; do.

The present invention forms a sprocket mounting hole of the center support frame larger than the outer diameter of the sprocket, and provides a housing that is mounted while accommodating bearings on both ends of the sprocket in the sprocket mounting hole, thereby making it easy to assemble and disassemble the sprocket unit. Has the effect of.

Description

Disc plow for tractors {DISK PLOW OF TRACTOR}

The present invention relates to a disc plow that is used by connecting to the tractor's three-point support upper and lower links, more specifically, the assembly and disassembly of the plow disc installed on the lower portion of the center support frame is easy to the tail frame It relates to a disc plow for a tractor that is easy to adjust the angle of the wing frame connected by the link as the slider is moved in the longitudinal direction.

In general, a plow attached to a tractor is used for moisturizing and crested plows at a lower end of a support, and a disc plow having a plurality of discs convex on one side inclined with respect to a forward direction. Many of these plows are polluted, and the answer is to grind them into disc plows.

Among these disc plows, the disc plows of Korean Utility Model Publication No. 96-33150 and Korean Utility Model Publication No. 98-56171 are connected to the gear box and the wing frames on both sides thereof so that angle adjustment is possible, and from the gear box downward. Two pairs of central plow discs were installed at the lower end of the extended central support frame, so that the plow discs of the gearbox and the wing frame were ground as if they were cutting the soil.

Conventional disk plows are all driven by a chain of the central plow disc provided in the lower portion of the center support frame and the sprocket of the output rotation shaft inside the gearbox and the bottom of the center support frame by a chain.

The central support frame 40 to which the central plow disc is mounted is hollow hollow shaft 43 in the sprocket 42 having an outer diameter larger than the diameter of the sprocket installation hole 41 in the lower portion thereof, as shown in FIG. The bevel gear 45, which is inserted and supported at both ends thereof by the bearing 44, and fitted therein, is fastened by bolts 46. As shown in FIG. The housing 47 inclined forward is mounted on the sprocket installation hole 41 of the center support frame 40. The housing 47 is engaged with the bevel gear 45 of the center support frame 40. Bevel gear 48 and the disc mounting shaft 49, which is equipped with a plow disc (not shown) at the end is supported to be rotated by a plurality of roller bearings 50 and the bevel gear 48 and disc mounting The shaft 49 is fastened with the bolt 51.

Referring to the assembling process of the conventional disc plow configured as described above, the upper portion of the center support frame 40 in a state in which the sprocket 42 is installed on the lower portion of the center support frame 40 in a chain (not shown) Hang from the bottom to the sprocket on the output shaft of the gearbox and connect the two ends of the chain. At this time, the chain should be provided with a margin to some extent even if the sprocket of the output rotary shaft and the sprocket 42 of the lower portion of the center support frame 40. This is because the tension of the chain must be adjustable.

After connecting the chain in such a way that the hollow rotating shaft 43 is fixed to the inside of the sprocket 42 in the lower portion of the center support frame 40 and the bearing mounting hole of the center support frame 40 so that the bearings 44 are assembled at both ends thereof. 41) to assemble the bearing 44, and then bevel gear 45 is inserted at both ends of the hollow rotating shaft 43 and fastened with a bolt (46).

Thereafter, the housing 47 in which the bevel gear 48 and the disc mounting shaft 49 are rotatably supported by the roller bearing 50 is placed in the bevel gear 42 at the lower portion of the central support frame 40. The bevel gears 48 are engaged with each other and the plow disc is mounted on the disc mounting shaft 49.

Therefore, these conventional disc plows are all connected by chains through sprockets 42 provided below the central support frame 40 and sprockets provided on the output shaft in the gearbox, and sprockets are directly installed on the lower part of the central support frame 40. Since the hole 41 is smaller than the outer diameter of the sprocket 42, the sprocket 42 hangs down from the top of the center support frame 40 while hanging the chain, and then the hollow rotary shaft 43 is inserted therein. The bearings 44 had to be assembled at both ends thereof, which made the assembly work complicated and difficult.

In particular, once the sprocket 42 is assembled to the sprocket installation hole 41 of the center support frame 40, it is difficult to disassemble and cannot be repaired. Therefore, the center support frame 40 must be replaced.

An object of the present invention is to research and develop to solve the above-mentioned conventional problems, the sprocket mounting hole is formed in the central support frame larger than the outer diameter of the sprocket and is mounted while accommodating bearings at both ends of the sprocket installation hole. By providing a housing to provide a disc plow for a tractor that is easy and easy to assemble and disassemble the sprocket unit.

1 is a cross-sectional view showing only a part of the center support frame is mounted conventional plow disc;

2 is a perspective view showing a disc plow for a tractor according to the present invention,

3 is a side view of FIG. 1;

4 is a plan view of FIG.

Figure 5 is a side view showing only the extract portion of the central plow is the main part of the present invention,

6 is a cross-sectional view of the disc mounting shaft portion of FIG.

<Explanation of symbols for main parts of drawing>

10: gearbox 11: input shaft 12: output shaft

13: Between lower connection 15: Between upper connection 20: Wing frame

21: pipe 22: pin 23: support

26,38: plow disc 27: plow rotating shaft 30: tail frame

32: hydraulic cylinder 34: slider 35: link

40: center support frame 42, 42a: sprocket 44: bearing

45, 48: bevel gear 47: housing 49: disc mounting shaft

The present invention is installed in the sprocket installation hole of the center support frame formed larger than its outer diameter so that it can be installed in the direction of the center line of the sprocket to achieve the above object, the bearing is fitted to both sides of the sprocket and bevel gears at both ends A sprocket unit fitted and fastened with bolts; A bevel gear is installed to engage the bevel gear of the sprocket unit, and a disc mounting shaft on which the plow plate is mounted on the same center line as the bevel gear is fastened by bolts to be rotated by a bearing. The bevel gear is a bevel gear of the sprocket unit. And a housing fitted to the sprocket installation holes on both sides of the central support frame while accommodating the bearing and the bearing outer surface at the same time.

Hereinafter, the disk plow for a tractor according to the present invention will be described in detail based on the accompanying drawings.

2 to 4 is a view schematically showing a disc plow for a tractor according to the present invention, Figure 5 is a side view showing only a portion of the plow disc central portion of the present invention, Figure 6 is a disc mounting shaft of FIG. Detailed cross section of the part.

As shown in the figure, the gearbox 10 in the center is engaged with bevel gears (not shown) such that the input rotation shaft 11 and the output rotation shaft 12 are orthogonal, and the lower links of the tractors are provided at both ends. A lower connecting rod 13 having a lower connecting portion to be connected is attached by a fastening member, and an upper connecting rod 15 having an upper connecting portion connected to an upper link of the tractor is also attached to the upper end thereof by a fastening member. .

Both sides of the gear box 10 are connected to the pins 22 so that the pipes 21 are rotatable back and forth in a plane, and the support 23 is lowered at a position with a predetermined distance therefrom from one end of the pipes 21. It is provided with a wing frame 20 extending.

The wing frame 20 is connected to the output rotating shaft 12 of the gear box 10 to penetrate the pipe 21 (not shown) is rotatably installed by a universal joint and the wing The support 23 of the frame 20 is provided to rotate the plow rotation shaft 27 to which the plurality of plow discs 26 are attached at regular intervals. The plow rotary shaft 27 is connected to a connecting rotary shaft (not shown) through a gear (not shown) provided on the support 23 at the end of the pipe 21.

The rear end of the gearbox 10 is equipped with a tail frame 30 extending rearwardly and the hydraulic cylinder 32 is stretched in the tail frame 30 so that the piston rod is stretched forward from the rear end thereof. To the piston rod end of the hydraulic cylinder 32, a square pipe-shaped slider 34 surrounding the tail frame 30 is connected, and the ends of the slider 34 and the wing frame 20 are respectively It is connected by a link 35.

At the lower end of the gearbox 10, a central support frame 40 extends downward, and the central support frame 40 has a pair of plow discs 38 in contact with the lower end of the gearbox 10 in plan view. The plow disc 38 is connected to the chain 53 over the gearbox 10 and the sprockets 52 and 42a of the sprocket unit U so that the plow disc 38 is interlocked along the input / output rotary shafts 11 and 12. .

The sprocket mounting holes 41a are formed at the lower end of the central support frame 40 to be larger than their outer diameter so that they can be installed in the centerline direction of the sprockets 42a. The sprocket mounting holes 41a have both sides of the sprockets 42a. The sprocket unit (U) is fitted to the bearing 44 is inserted into the insertion portion extending from the bevel gear 45 is fastened to the bevel gear 45 fitted at both ends thereof with a bolt (46).

A bevel gear 48 that engages the bevel gear 45 of the sprocket unit U is installed in the housing 47a mounted on both sides of the sprocket mounting hole 41a of the center support frame 40, and the bevel gear 48 The disc mounting shaft 49 is fastened with a bolt 51 and rotated by a roller bearing 50 on the same center line, and the bevel gear 48 of the housing 47a is a bevel of the sprocket unit U. It engages with the gear 45 and accommodates the outer surface of the bearing 44 so as to be fitted into the sprocket mounting holes 41a on both sides of the central support frame 40.

The rear end of the central support frame 40 is equipped with a moisturizing 56 for grinding the non-branched portion between the central plow disc 38.

The assembly process of the disc plow for a tractor of the present invention configured as described above will be described with reference.

First, the chain 53 is installed in the sprocket 52 of the output shaft 12 on the gearbox 10 side, but the sprocket 42a is installed in the sprocket installation hole 41a at the lower end of the center support frame 40. Even if it has a margin to some extent, it is provided to be stretched and the sprocket unit U is inserted in the direction of the center line of the sprocket installation hole 41a of the center support frame 40 so that the chain 53 sprockets 42a of the sprocket unit U. Assemble to hang). At this time, the sprocket unit (U) can be easily installed because the sprocket installation hole (41a) of the central support frame 40 is larger than the outer diameter of the sprocket (42a) and the chain (53) is stretched to the margin.

The bevel gear 48 assembled to the housing 47a at both ends of the sprocket unit U temporarily assembled as described above engages with the bevel gear 45 of the sprocket unit U, and the end of the housing 47a is bearing ( The housing 47a is mounted with a plurality of bolts 51 in the sprocket installation hole 41a of the central support frame 40 to accommodate the outer surface of the 44.

Mounting the plow plate 38 to the end of the disc mounting shaft 49 is raised in the state rotated in the housing 47a assembled as described above and the tension adjusting member 54 provided inside the central support frame 40 The tension of the chain 53 is appropriately adjusted by adjusting with the adjusting screw 55.

The tractor plow assembled as described above connects the upper and lower links 13 and 15 of the gear box 10 to the upper and lower links of the tractor by a three-point support method, and then the PTO shaft of the tractor. The input shaft 11 of the gearbox 10 is connected to the universal joint to the hydraulic connector of the tail frame 30 side hydraulic cylinder 32 to the hydraulic connector of the tractor.

After connecting to this, when the tractor is driven in the forward state, the PIO shaft of the tractor is driven, so that the input rotation shaft 11 and the output rotation shaft 12 of the gearbox 10 are interlocked. The plow rotation shaft 27 of the support 23 is rotated through a connection shaft and a gear in the pipe 21 of the wing frame 20 connected thereto.

At the same time, power is transmitted to the sprocket 42a of the central support frame 40 through the chain 53 connected to the sprocket 52 of the output shaft 12, and the power transmitted to the sprocket 42a is a sprocket unit (U). ) And the plow disc 38 mounted thereon by driving the bevel gear 48 in the housing 47a and rotating the disc mounting shaft 49.

Therefore, the plow disc 38 of the center as well as the plow disc 26 of the plow rotary shaft 27 arranged on both sides is also advanced while rotating with the plow rotary shaft 27, so as to cut the soil, the center gearbox 10 Change to). At this time, the moisturizing 56 at the rear of the plowed portion 38 between the plowed discs is replaced.

In this way, when the grinding operation is performed to adjust the plane angle of the plow disc 26, the tractor driver determines the supply and discharge directions to the hydraulic cylinder 32 according to the operation of the hydraulic lever, and thus the hydraulic cylinder 32 Piston rod of () is forward / backward, the slider (34) connected to the piston rod is forward / backward, so that the pipe (21) of the wing frame (20) pin through the link (35) connected to the slider (34) It rotates back and forth on a plane about 22. As the pipe 21 of the wing frame 20 is rotated as described above, the inclination angle of the plow disc 26 can be easily adjusted.

As described in detail above, the disc plow for tractor according to the present invention forms a sprocket installation hole of the center support frame larger than the outer diameter of the sprocket, unlike the prior art in which the sprocket hangs on the chain from the top of the center support frame. By providing a housing to be mounted while accommodating the bearings on both ends of the sprocket in the sprocket installation hole, the sprocket unit can be easily assembled and disassembled.

Claims (1)

A gearbox 10 engaged with the bevel gear such that the input rotation shaft 11 and the output rotation shaft 12 are orthogonal to each other; Wing frame 20 to which pipe 21 is connected so as to rotate back and forth on a plane on both sides of the gearbox 10; A plow rotating shaft 27 provided horizontally to be interlocked through the gearbox 10 on the wing frame 20 and having a plurality of plow discs 26 attached at equal intervals; A pair of plow discs 38 are installed to extend to the lower front of the gear box 10 so that the lower ends thereof abut the flat ends, and the plow discs 38 include the gear box 10 and the sprocket unit U. FIG. In the disc plow for a tractor provided with: a central support frame 40 driven by a chain 53 connected across the sprockets 52, 42a The central support frame 40 is installed in the sprocket installation hole 41a formed larger than its outer diameter so that it can be installed in the center line direction of the sprocket 42a, and bearings 44 are fitted to both sides of the sprocket 42a. Sprocket unit (U) is bevel gear 45 is fitted at both ends and fastened with a bolt 46; A bevel gear 48 that is engaged with the bevel gear 45 of the sprocket unit U is installed, and the disc mounting shaft 49 on which the plow disc 38 is mounted on the same center line as the bevel gear 48 is bolted. And the bevel gear 48 is engaged with the bevel gear 45 of the sprocket unit U and at the same time accommodates the outer surface of the bearing 44 while being fastened to the bearing 50. 40) The disc plow for a tractor, characterized in that the housing (47a) is inserted into the sprocket installation holes (41a) on both sides.