JPS623004Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a mower conditioner mounting device, and when transporting the mower conditioner,
The present invention relates to the provision of a device for the purpose of firmly holding it on a tractor.

Conventionally, a mower conditioner is attached to a machine frame provided on a tractor via a three-point link.In other words, the mower conditioner is attached to the machine frame so that it can freely move up and down around the longitudinal axis. There is. The downward rotating position of the mower conditioner is the working position for mowing grass and conditioning the cut grass, and the upward rotating position is the position to be transported by the tractor. , transport the mower conditioner by driving on the road with the mower conditioner off the ground.

However, in the above configuration, the means for connecting the mower conditioner to the tractor was not sufficient, which caused problems such as large shaking and rattling of the conditioner, stress concentration on a part of the connecting means, and overload. It was happening.

The present invention was devised in view of such conventional problems, and its features are as follows:
The mower conditioner is attached to the machine frame on the tractor side via a connecting shaft in the longitudinal direction of the axis so that it can freely move up and down. In the case where the posture is to be carried by a tractor, a connecting member is provided that releasably connects the machine frame on the tractor side and the mower conditioner in the upward rotating posture, and the connecting member is connected to the mower conditioner on the tractor side. It is composed of an axially longitudinal engaging member provided on either the machine frame or the mower conditioner, and an engaged member provided on the other side and removably fitted into the engaging member. be.

Embodiments of the present invention will be described below with reference to the drawings.

In Figures 1 to 3, 1 is a tractor, 2
is a mower conditioner, which is attached to the rear of the tractor 1 via a three-point link 3 so as to be movable up and down.

The mower conditioner 2 includes a mower 4, a conditioner 5, and a conditioner cover 6.

Reference numeral 7 denotes an arch-shaped mounting frame, and front-protruding brackets 8 are fixed to the left and right lower portions of the mounting frame 7, and front-protruding brackets 9 are fixed to the center upper part of the mounting frame 7. Lower links 10 are removably supported on the center bracket 9, and top links 11 are removably supported on the central bracket 9. Although not shown, the top link 11 has a handle at its tail end, and a threaded structure. The axial length of a certain top link 11 is made expandable and retractable.

Reference numeral 12 denotes a swinging frame, which has a power receiving device in the longitudinal middle portion of the frame that receives power from a tractor PTO shaft (not shown) via a universal joint shaft;
The pulley 13 of the device is rotatable.

One end of the swinging frame is pivotally connected to the lower left side of the mounting frame 7 in this example through a cross joint connection body 14, and extends in the horizontal direction, and a planar U-shaped connection part 15 is provided at the extending end. have

16 is an elastic support body, one end of which is a cruciform joint connection body 1
is pivotally supported on the left shoulder of the mounting frame 7 via 7,
The other end is connected to the connecting portion 15 side of the mounting frame 7, and the swing frame 12 and the like are elastically supported there through the elastic support body 16.

The mounting frame 7 and the swing frame 12 constitute a machine frame on the tractor side.

A gear case 19 is pivotally attached to the connecting portion 15 of the swing frame 12 via a connecting shaft 18 extending in the longitudinal direction of the axis, and a flat transmission case 20 is connected to the lower end of the gear case 19 laterally outward. be done.

On the transmission case 20, rotary disks 22 having cutting blade bodies 21 are provided at equal intervals in the lateral direction so as to be rotatable around a vertical axis, and the mower 4 is configured here.

Reference numeral 23 denotes a safety frame, one end of which is fixed onto the gear case 19 with a bolt or the like, and a telescopic cylinder device 24 is installed between the mounting frame 7 and the safety frame 23. A pair of side frames 25 are fixed to the left and right sides of the safety frame 23, and a tine shaft 26 extending laterally to the axis is rotatably supported on both side frames 25, and a tine 27 is attached to the tine shaft 26.
A conditioner 5 is constituted by a plurality of these being pivotally connected.

The mower 4 and conditioner 5 described above are interlocked and connected to the pulley 13 via a pulley 28 and the like that is coaxial with the connecting shaft 18 .

Thus, with the extension operation of the cylinder device 24,
The mower conditioner 2 is in a downward rotating position, and this position is the position of the mower 4 and conditioner 5.
This is a posture that allows work in mowing grass and conditioning grass clippings, respectively. On the other hand, the same cylinder device 24
With the contraction operation, the mower conditioner 2 is placed in an upward rotational posture, and this posture is the posture in which the mower conditioner 2 is transported by the tractor.

A connecting member 29 is provided that releasably connects the machine frame on the tractor side and the mower conditioner 2 in the upwardly rotating position.

To explain this with particular reference to FIG. 3, the safety frame 23 is provided with a tongue piece 31 having a through hole 30, and a connecting member that is a pin in the longitudinal direction of the axis and can be freely fitted into and removed from the through hole 30. 32 is fitted. On the other hand, the mounting frame 7 is provided with a cylindrical engaged member 34 having an axially longitudinal engagement hole 33 that is removably fitted into the engaging member 32, and the connecting member 32 is connected to the collar portion 35. Engaged member 34 with retaining pin 36
These constitute the connecting member 29. This connection can be released by separating the engaging member 32 from the engaged member 34, as shown by the two-dot chain line. 37 is a gripping portion.

FIGS. 4 and 5 show another embodiment of the connecting member 29, in which a tongue piece 39 having a through hole 38 is provided in the safety frame 23, and the tongue piece 39 is provided in the through hole 38 so as to be vertically swingable. A pin engagement member 32 is fitted,
The engaging member 32 is urged down by a spring 40 contained in the casing 39. Engagement member 3
An engaging slope 42 is formed at the lower end protruding end 41 from the second through hole 38 . On the other hand, on the mounting frame 7,
A cylindrical engaged member 34 having an axially longitudinal engagement hole 33 that is elastically fitted into the protruding end 41 in a detachable manner is provided.

During the upward rotation process of the mower conditioner 2, the engaging slope 42 swings on the upper end of the engaged member 34, and at this time, the engaging member 32 resists the elastic force of the spring 40. The mower conditioner 2 moves upward (Fig. 5), and when the upward rotation is completed, the protruding end 41 of the engaging member 32 springs into engagement with the engaged member 34, and the mower conditioner 2 is connected to the machine frame on the tractor side. Ru. This disconnection is achieved by pulling up the cable 44 connected to the upper shaft 43 of the engaging member 32 against the spring 40 to release the engagement between the engaging member 32 and the engaged member 34. Ru.

7 and 8 show still another embodiment of the connecting member 29, in which a shaft-like engagement member 32 with a circular cross section extending longitudinally from the axis is protruded from the mounting frame 7.
, an engaged member 34 having a U-shape in plan view is provided which is removably fitted into the engaging member 32, and both members 3
A holding member 4 that releasably holds the engagement of parts 2 and 34.
5 is provided. The holding member 45 includes a through hole 47 provided in one of the opposing pieces 46, 46 of the engaged member 34, a holding shaft 48 fitted into the through hole 47 so as to be slidable back and forth, and the holding shaft 48. The opposing piece 46,
46 and a spring 49 for resiliently protruding, and an engagement slope 50 is formed at the protruding end of the holding shaft 48.

During the upward rotation process of the mower conditioner 2, the engagement slope 50 slides on the circumferential surface of the engagement member 32, and at this time, the holding shaft 48 opposes the elastic force of the spring 49. When the pieces 46 and 46 are retracted from the engagement hole 33 and the upward rotation is completed, the holding shaft 48 comes into contact with the circumferential surface of the engagement member 32 and maintains the engagement between the engagement member 32 and the engaged member 34. do. To release this hold,
The cable body 51 connected to the holding shaft 48 is connected to the spring 4
This is achieved by pulling against 9.

According to the present invention, when the mower conditioner 2 is transported, the mower conditioner 2 is connected to the machine frame on the tractor side, so that the upward rotational posture of the mower conditioner 2 is firmly maintained. Therefore, rattling and shaking during transportation can be prevented, which is advantageous in terms of handling. Moreover,
This is extremely useful because it is achieved with a simple configuration and simple steps.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is an overall plan view, Fig. 2 is a rear view of the same, Fig. 3 is an enlarged view of the main part of Fig. 2, and Fig. 4 is another embodiment of the connecting member. FIG. 5 is an explanatory diagram of the same operation, FIG. 6 is a diagram of still another embodiment of the connecting member, and FIG. 7 is a cross-sectional view taken along the - line in FIG. 6. 2...Mower conditioner, 29...Connecting member, 32...Engaging member, 34...Engaged member.

Claims (1)

[Scope of utility model registration request] A connecting shaft 32 in the longitudinal direction of the axis is attached to the machine frame on the tractor side.
The mower conditioner 2 is attached to the mower conditioner 2 so as to be able to move up and down, and the downward rotating position of the mower conditioner 2 is the position in which work can be performed, and the upward rotating position is the position in which the mower conditioner 2 is to be transported by the tractor. A connecting member 29 is provided that releasably connects the machine frame on the tractor side and the mower conditioner 2 in the upwardly rotating position, and the connecting member 29
An engaging member 32 extending in the longitudinal direction of the axis provided on either the machine frame on the tractor side or the mower conditioner 2, and an engaged member 34 provided on the other side and removably fitting into the engaging member 32. A mower conditioner mounting device comprising: