JPH059203U - Chain case for side-drive type rotary - Google Patents

Abstract

(57) [Abstract] [Purpose] The inner and outer halves of a side-drive rotary chain case in which the inner half and outer half of the chain case formed by dividing into two are butted and welded together. There is provided a chain case capable of preventing a defective product from being generated when the seam of the chain case is welded by being displaced. [Structure] A chain case 5 of a side drive type rotary 1 is formed by being divided into an inner half portion 5a and an outer half portion 5b, and the inner half portion and the outer half portion are chain cases 5a,
A tongue-shaped convex portion 31 and a notched concave portion 32 that engage with each other are formed at corresponding positions of both seams 30 of 5b.
The two seams 30 are butt-welded with each other by engaging with each other and are integrally formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a chain case in a side drive type rotary in which the inner half portion and the outer half portion of a chain case formed by splitting into two are butted and welded to be integrally formed.

[0002]

[Prior Art]

 Conventionally, as shown in FIG. 5, a chain case a of a side drive type rotary unit is integrally formed by butt-welding a joint d of an inner half b and an outer half c of a chain case formed by being divided into two parts. However, since the seam d of the chain cases b and c in the inner and outer halves is linear, the seam d is misaligned and welded when the seams d are butt-welded, and defective products are likely to occur. was there.

[0003]

[Problems to be solved by the present invention]

 SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to improve the above problems. The present invention has been made to butt and weld the joints of the inner half portion and the outer half portion of a chain case formed by dividing into two. Side drive type rotary chain case that is integrally formed by welding, when welding the joints of the inner and outer halves of the chain case, it is possible to prevent defective products from being welded and the side drive type rotary chain The purpose is to provide a chain case in

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a side drive type rotary chain case in which the inner half portion and the outer half portion of the chain case formed by dividing into two are butt-joined and integrally formed by welding. Tongue-shaped protrusions and notched recesses that engage with each other are formed at the corresponding positions of the seam of the half case and the outer half of the chain case, and both concavo-convex parts are engaged to weld the seams. It features a side drive type rotary chain case that is integrally formed.

[0005]

[Action]

 If the tongue-shaped projections and notch recesses formed at the corresponding positions of the seam are butted against each other, the chain cases of the inner and outer halves will automatically position themselves correctly. To match. Therefore, the chain cases of the inner and outer halves are accurately welded without displacement, and the occurrence of defective products can be avoided.

[0006]

【Example】

 Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the drawings. FIG. 1 is an overall perspective view of a side drive type rotary. In the figure, 1 is a side drive type rotary mounted on a rear portion of a tractor (not shown) by a three-point link mechanism. Support arms 3 and 4 are extended from both sides of the transmission 2, a chain case 5 is attached to an end of the support arm 3 on one side, and a side plate 6 is attached to an end of the support arm 4 on the other side of the transmission. One end of a pawl shaft 8 in which a large number of plowing pawls 7 are planted is supported on the lower part of the plate 5, and the other end of the pawl shaft 8 is supported on the lower part of the side plate 6. Then, the power taken out from the PTO shaft of the tractor is transmitted to the drive shaft 10 in the support arm 3 on one side via the universal joint 9 and the transmission 2, and the rotation of the drive shaft 10 is rotated by the chain case 5. It is transmitted to the pawl shaft 8 via the internal drive sprocket 11, chain 12, and driven sprocket 13 so that the tilling pawl 7 is driven to rotate. In the drawing, 14 is a top mast, 15 is a top mast support, 16 is a rotary cover, 17 is a side cover, 18 is a front rear cover, 19 is a rear rear cover, 20 is a rear cover pressure rod, 21 is a toolbar, 22 is 22 A tail wheel, 23 is a tail wheel adjusting handle, 24 is a tail wheel release lever, 25 is a tractor side top link, and 26 is the same top link support.

FIG. 2 is an exploded perspective view of a chain case according to the present invention. The chain case 5 is divided into an inner half portion 5a and an outer half portion 5b, and the chain cases 5a of both half portions are Tongue-shaped protrusions 31 and notch recesses 32 that engage with each other are formed at corresponding positions of each joint 30 of 5b, and the tongue-shaped protrusions 31 and notch recesses 32 of both chain halves 5a and 5b are formed. The two seams 30 are brought into engagement with each other, but the two seams 30 are butted against each other and welded together to form one body. The tongue-shaped convex portion 31 and the cut-out concave portion 32 of the illustrated embodiment are the concave-convex tongue-shaped convex portion and the cut-out concave portion, respectively, which are concave and convex at the respective parallel left and right joints of the one half chain case and the other half chain case. , And the concavo-convex portions of the chain cases of both halves are engaged, but the concavo-convex is the same in the parallel left and right joints of one half-chain case and the other half-chain case. It is also possible to form the tongue-shaped convex portion and the notched concave portion so that the respective concave and convex portions of the chain cases of both halves are engaged.

FIGS. 3, 4 (A) and 4 (B) show a plan in which the lubrication port 33 and the chain tensioner 34 are attached using the tongue-shaped protrusion 31 of the half chain case 5a or 5b. Is. The lubrication port 33 has a hole formed in the tongue-shaped convex portion 31, and the lubrication port 33 is inserted and fixed by gluing or the like. It is fixed to the inside of the tongue-shaped convex portion 31 with a bolt 35. Conventionally, the side drive type rotary chain case, in which the inner half and the outer half of the chain case formed by splitting in two are butt-welded and integrally formed, the edge width of the half chain case is It was difficult to attach a lubrication port or chain tensioner to this part because it is narrow, which is half the edge width of the integrated chain case. Since it is enlarged, it becomes possible to install the oil inlet 33, the chain tensioner 34, and the like.

[0009]

[Effect of the device]

 In summary, the present invention is a side-drive rotary chain case in which the inner half and the outer half of the chain case formed by dividing into two are butted and welded together to form the inner half and the outer half. Tongue-shaped protrusions and notched recesses that engage with each other are formed at the corresponding positions on both ends of the chain case on the half part. Since it is formed, the chain cases of the inner and outer halves are automatically aligned at the correct positions during welding, and the chain cases of the inner and outer halves are accurately welded without displacement, and the occurrence of defective products is avoided. Also, since the welding line joining the half chain cases is not a straight line but a bending line, the rigidity of the integrally formed chain case increases, and the edge width of the half chain case is tongue-shaped. Since the convex portion is enlarged, it is possible to attach an oil inlet, a chain tensioner, etc. to this portion.

[0010]

[Brief description of drawings]

FIG. 1 is an overall perspective view of a side drive type rotary.

FIG. 2 is an exploded perspective view of a chain case according to the present invention.

FIG. 3 is a front view of a half chain case in which a lubrication port and a chain tensioner are attached to a tongue-shaped convex portion.

FIG. 4 (A) is an external view of a tongue-shaped convex portion to which an oil filling port is attached. (B) is an external view of a tongue-shaped convex portion with a chain tensioner attached to the internal surface.

FIG. 5 is a perspective view of a chain case of a conventional side drive type rotary in which an inner half portion and an outer half portion of a chain case formed by being divided into two are butt-welded and integrally formed.

[0011]

[Explanation of symbols]

 1 Side-drive type rotary 5 Chain case 5a Inner half chain case 5b Outer half chain case 30 Half chain case joint 31 Tongue-shaped convex part of half chain case 32 Notched concave part of half chain case

Claims (1)

[Claims for utility model registration] [Claim 1] A side-drive rotary chain case in which the inner half portion and the outer half portion of the chain case formed by splitting are butt-joined and welded together , A tongue-shaped convex portion and a notched concave portion which are engaged with each other are formed at corresponding positions of both joints of the inner half portion and the outer half portion of the chain case, and both concavo-convex portions are engaged to butt both joints. Chain case for side-drive type rotary, characterized by being integrally welded together.