JPS5941924Y2 - Rotary cover suspension bracket mounting structure - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a suspension bracket mounting structure for a rotary cover, and is designed to improve the appearance and securely fix the rotary cover.

The rotary cover, especially its front cover, is often suspended from the mounting bracket via a suspension bracket, but in the past, the suspension bracket was attached directly to the top surface of the front cover by welding, etc. However, there was a drawback that the appearance of the mounting part was significantly impaired.

The present invention solves these conventional problems and is characterized by a support structure in which the rotary cover is suspended via a suspension bracket that projects upward. A long hole is formed for insertion of the holding bracket, and the hanging bracket is inserted into the long hole so that the bent part at the lower end is along the lower side of the rotary cover. A cover plate is attached to the lower surface of the rotary cover so as to cover it from below, and an inclined part is provided on the cover plate opposite to the end of the bent part.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
The figure is a side view of the whole, FIG. 2 is a developed sectional view of the main part, and FIG. 3 is a longitudinal sectional side view of the same.

As shown in FIG. 1, the rotary tilling device includes a rotary case 1, a claw shaft 2, a tilling claw 3, a gauge wheel support frame 4, a gauge wheel 5, a tillage depth adjustment device 6, a rotary cover +,...
The tiller shaft 2 is driven by the power transmitted from the PTO shaft of the tractor, and the tilling claws 3 are used to till the field.

As shown in FIGS. 2 and 3, the rotary case 1 forms the main body of the rotary tilling device, and supports various other mechanisms and components.

The rotary case 1 includes a case body 10 that houses a gear mechanism 8 and a transmission mechanism 9, a protrusion 11 that protrudes from the top of the case body 10 on both sides, and a mounting bracket 12 at the outer end of each protrusion 11 by body casting. It is an integrally cast product, and is constructed in the shape shown in FIGS. 4 to 6, with the aim of reducing the number of parts, the number of processing steps, and the number of assembly steps.

That is, the case body 10 has a rectangular cross-section, and is provided with an enlarged portion 13 at the top for housing the gear mechanism 8, and the enlarged portion 13 has a front opening 14 for inserting the gear mechanism 8 from the front. A top mast attachment part 16 for attaching the entire top mast 15 is integrally formed, and rectangular tube-shaped protrusions 11 are integrally formed to taper outward from both sides.

The mounting bracket part 12 is plate-shaped and is formed to close the outer end of each protruding part 11 and protrude back and forth, and has a through hole 18 for mounting the lower link mounting pin 17 and a rotary cover on the front end side. 7. Through holes 19 for mounting are drilled at the top and bottom,
In addition, on the rear end side there is a through hole 2 for attaching the gauge wheel support frame 4.
0 and through holes 21 for attaching the rotary cover 7 are bored in the upper and lower sides.

In this way, the rotary case 1 is made by integrally casting everything from the conventional support arm to each mounting bracket, reducing the number of parts to one and being able to cast them at the same time, which greatly reduces the number of processing steps and makes assembly easier. Man-hours can also be reduced.

The gear mechanism 8 is connected to the input shaft 2 as shown in FIGS. 2 and 3.
2 and a bevel pinion 23 provided at the rear end of the drive shaft 2.
4 and a bevel gear 25 that engages with a bevel pinion 23, the input shaft 22 of which is fixed to a bearing 26.
It is rotatably mounted on a support case 27 via a shaft, and is detachably connected to a PTO shaft of a tractor via a universal joint shaft 28.

Further, the drive shaft 24 is horizontally suspended via a bearing 30 between a pair of left and right bearing fitting sections 29 formed at the inner end of a support case 27, and the support case 27 supports the gear mechanism 8 through the front opening 14.
The bearing cover 31 and the safety cover 32 are removably attached to the support case 27.

Therefore, when assembling, the gear mechanism 8 and the like are assembled to the support case 27 externally in advance, and then the gear mechanism 8 is inserted into the enlarged part 13, and the support case 2T is attached to the front opening 1.
4. The fastening procedure can be used, and the support case 2T side can be shaped into a so-called cassette.

As shown in FIG. 2, the claw shaft 2 is fastened to both ends of a tilling shaft 330 with fastening bolts 34 in the axial direction, and the tilling shaft 33
is inserted into the lower end of the case body 10 so as to pass through the case body 10 from left to right, and is rotatably held by a bearing 35 .

On both sides of the lower end of the case body 10. A tilted bracket 36 is fitted onto the tilling shaft 33 in an inclined manner, and a tilted claw shaft 38 is rotatably supported by the tilted bracket 36VC via a bearing 37.

The inclined claw shaft 38 is equipped with an inclined claw 39 that can pass below the case body 10, and is rotatable integrally with the tilling shaft 33 via the engagement part 40, so that the case main body 10 that cannot be tilled with the tilling claws 3
The remaining tillage in the lower part is disposed of by the inclined claws 39.

The transmission mechanism 9 is for interlocking the gear mechanism 8 and the tilling shaft 33, and as shown in FIGS. 2 and 3, a drive sprocket 41 fixed to the drive shaft 24 and a tilling shaft 3'' It consists of a driven sprocket 42 fixedly attached to sprocket 3, and a chain 43 suspended between both sprockets 41 and 42, and a tightener 44 is slidably pressed against the chain 43.

The tightener 44 is a plate spring curved into an arc shape, and its upper end is pivotally connected to a holder 46 via a support pin 45, and its lower end is connected to the case body 10 as a cushioning material for the blind lid 47 attached. 48.

Even when the holder 46 is inserted into a through hole 49 formed in the support case 27, it is prevented from being pulled out from the front side by the bearing cover 3HC.

A cushioning material 50 is provided on the case body 10 side corresponding to the middle part of the tightener 44, and this cushioning material 50 is for receiving the impact when abnormal tension is applied to the chain 43. It is fixed to the case body 10 via a plate 51.

A lower link attachment pin 17 for connecting the lower link 52 is attached to the through hole 18 of the attachment bracket portion 12 .

As shown in FIG. 2, this lower link mounting pin 17 includes a collar portion 53, a serration portion 54, and a threaded portion 55, and the serration portion 54 is connected to the through hole of the mounting bracket @12.
8, and a nut 56 is screwed and fastened to the threaded portion 55, and the lower link mounting pin 17 is prevented from rotating by being forcefully press-fitted into the through hole 18 of the serration portion 54.

Normally, rotation is prevented by forming a flat part on the lower link mounting pin 17 and placing a protrusion in contact with the flat part, but if the mounting bracket part 12 is a cast body, welding of the protrusion, etc. This would be difficult and impossible to implement.

However, if configured as above, lower link mounting pin 1
Rotation can be stopped only by machining the serration portion 54 on the portion 7.

Note that the counterpart is not limited to cast metal, and can be made of steel plate as well.

A support link 57 that reinforces the top mast 15 is aligned with the lower link attachment pin 17.

The forked portions of the front end of the gauge wheel support frame 4 are removably pivoted to the through holes 20 of the mounting bracket portion 120 by means of mounting pins 58 .

The rotary cover 7 is connected to the front cover 5 as shown in FIG.
9, a rear cover 60, and a side cover 61, and the front cover 59 has the case body 10 inserted vertically in the center, and has suspension brackets 62 and vibration isolators at four locations each on the front, back, left, and right. Mounting bracket 62 via 63
and is suspended from the mounting platen 12 via vibration isolating material 63.

That is, as shown in FIG. 8, the front cover 59 has a pair of left and right elongated holes 64 formed at each location on the front, rear, left, and right sides, and the lower surface of the front cover 59 has holes 64 formed in the longitudinal direction. A reinforcing plate 66 having a long hole 65 corresponding to the hole 64 is provided, and the hanging bracket 62 has a bent portion 67 at the lower end.
The bent portion 6T engages with the lower surface of the reinforcing plate 66, and projects onto the front cover 59 through each elongated hole 64,65.

The reinforcing plate 66 and the bent portion 67 of the hanging bracket 62
is completely covered from below by a cover plate 68 shaped to follow its unevenness, and each of these members is spot welded to the front cover 59 in such a way that the welding points do not appear on the surface of the front cover 69. Fixed.

The cover plate 68 is formed with a sloped portion facing the edge of the bent portion 67, and is shaped so as to prevent the adhesion of hot water and the like.

The vibration isolating material 63 is made of a rubber material or the like, and is interposed between a short outer cylinder 69 and a long inner cylinder 70 with a seizing material or the like, and the outer cylinder 6
9 is fitted into the through holes 19 and 21 of the mounting bracket part 12, and the inner cylinder 70 is interposed between the pair of left and right suspension brackets 62, and is fastened by a mounting bolt 71 and a nut 72IIC screwed thereon. has been done.

As shown in FIGS. 9 and 10, the rear cover 60 holds the cylindrical body 74 over its entire width with a rolled-up part 73 that wraps around the front edge, and has reinforcing edges 7 on the front cover 59 side at both ends.
The mounting pin 76 fixed to the rear cover 60 is fitted into the rear cover 60.
The front cover 590 is attached by this pair of left and right mounting pins 76.
It is pivoted at the rear end so that it can move up and down.

The mounting pin 16 is removably screwed from the outside into a fixing nut 77 welded to the inner side of the reinforcing edge T5 of the front cover 59.
A vibration isolating material 78 is interposed between the tip and the cylindrical body 74.

The winding portion 73 of the rear cover 60 is held down by a holding plate 80 which is fixed to the front cover 59 with a bolt 79 at approximately the center, and the side cover 61 is held down by a bolt 81 at the front end of the front cover 59. and are collinear with the mounting pin 76.

As described in detail in the embodiments above, in the present invention, a long hole is formed in the rotary cover, and a hanging bracket having a bent part at the lower end is arranged so that the bent part at the lower end is along the lower side of the rotary cover. Since the rotary cover is installed by being inserted into a long hole, only the hanging bracket protrudes from the upper surface of the rotary cover, resulting in a clean and attractive appearance.

In addition, if a long hole is drilled in the rotary cover, hot water, etc. may leak from the long hole to the top of the rotary cover, but the bottom of the rotary cover should be This problem can be solved by adding a cover plate to the side.

In addition, since the cover plate is provided with an inclined part opposite to the bent part, even if the thickness of the hanging bracket is increased, the inclined part of the cover plate can change smoothly. It is possible to prevent the adhesion of mixed species due to the occurrence of extreme steps at the edges of the parts.

In other words, the thickness of the suspension bracket can be increased to ensure firm suspension, and it is also possible to prevent contamination from adhering to the lower surface of the rotary cover.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; Fig. 1 is a side view showing the overall configuration, Fig. 2 is a developed sectional view of the rotary case portion, Fig. 3 is a longitudinal sectional side view of the same, and Fig. 4 is the rotary case. Fig. 5 is a partially cutaway front view of the same, Fig. 6 is a partially cutaway view of the same, Fig. 7 is a plan view of the main part of the rotary cover, and Fig. 8 is a cross section of the front cover suspension part. Figure 9 is A-A of Figure 7.
10 is an enlarged view taken along the line BB in FIG. 7. 1...Rotary case, 2...Claw shaft,
7...Rotary cover, 8...Gear mechanism, 9...Transmission mechanism, 10...Case body, 11...Protrusion, 12 ...Mounting bracket part, 13...Ampulla part, 17...
・Lower link mounting pin, IL19t20t21...
...Through hole, 2T...Support case, 59...
...Front cover, 60...Metal cover, 61.
...Detail cover 62...Hanging platen),
64t65... Long hole, 66... Reinforcement plate, 67... Bent part, 68... Cover plate, 7
3... Winding part, 76... Mounting pin.

Claims (1)

[Scope of utility model registration request] A suspension bracket 6 that projects the rotary cover 7 upward
2, the rotary cover 7 is formed with a long hole 64 through which the suspension bracket 62 is inserted, and the rotary cover 7 is formed with a long hole 64 for inserting the suspension bracket 62, and the rotary cover 7 is formed so that the bent part 67 at the lower end is along the lower side of the rotary cover 59. The suspension bracket 62 is inserted into the elongated hole 64, and a cover plate 68 is attached to the lower surface of the rotary cover 1 so as to cover the bent portion 67 of the suspension bracket 62 from below. A suspension bracket mounting structure for a rotary cover, characterized in that a sloped portion is provided on a cover plate 68 facing an edge.