JPH0715369Y2 - Rear cover load adjusting device for rotary working machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a rear cover load of a rotary working machine, which enables remote load adjustment of a rear cover of a rotary working machine connected to the rear of an agricultural tractor. Regarding the adjusting device.

[Prior Art] Conventionally, in an agricultural tractor configured by vertically arranging a rear cover that is elastically pressed downward by a spring at a rear portion of a rotary working machine connected to the rear of the machine body, the load adjustment of the rear cover is performed on a support side of the rear cover. It was structured so that adjustment could be done manually by operating the screw above.

[Problems to be solved by the invention] Therefore, the operator has to get off the agricultural tractor and make adjustments, and it is difficult for an unskilled person to make the adjustment.

[Means for Solving the Problem] The present invention solves such a problem and enables an operator to easily and accurately adjust the position of the operator while he / she is on board. The lower end of each rod loosely fitted to each of the plurality of extending stays is connected to the upper surface of the lower side of the rear cover, and is attached to the lower part of each compression spring that is fitted to each rod below the stay. Is configured such that the spring support plate is brought into contact with the spring support plate, and the other end side of a hydraulic cylinder whose one end side is connected to the upper surface of the lower side of the rear cover is connected to the spring support plate.

[Operation] Therefore, when the operator operating the agricultural tractor looks at the rear of the rotary working machine and sees the finished state by the rear cover and operates the hydraulic cylinder from the driver's seat, the spring support plate can be moved up and down. Therefore, the vertical movement of the compression springs makes it possible to adjust the amount of compression of each compression spring, which enables accurate load adjustment.

Example Next, an example shown in the drawings will be described.

FIG. 1 shows a side view of the main part, and a top link (10) and both lower links (11) are provided behind the rear case (9) in which both rear wheels (8) are mounted on the agricultural tractor (B). A rotary working machine (A) is connected by a lift arm (12) so that the rotary working machine (A) can be moved up and down, and the rotary working machine (A) is a side drive type that drives the rotary (a) from a side transmission case (13). The rear part of the rotary cover (2) attached to the upper part of the rotary (a) is connected to the upper part of a rear cover (1) which extends vertically behind the rotary (a) via a hinge (14). The structure is the same.

Two stays (3) spaced from the upper rear part of the rotary cover (2) to the upper side of the rear cover (1).
(3) is extended respectively, and washers (1
5) and the snap pin (16) are mounted respectively, and the lower ends of the rods (4) and (4) are fixed to the upper surface of the lower side of the rear cover (1), and are U-shaped support pieces (17).
Each of the rods (4) and (4) is rotatably connected to the (17) via a pin (18) so that the upper ends of the rods (4) and (4) come into contact with the lower surfaces of the stays (3) and (3). The compression springs (5) and (5) are fitted and configured.

The compression spring (5) is attached to the rods (4) (4).
Both ends of the spring support plate (6) are loosely fitted so as to abut against the lower end of (5), and the upper surface of the lower side of the rear cover (1) between the two support pieces (17) and (17) is fitted. The fixed U-shaped support piece (19) has a lower pin (2) of the hydraulic cylinder (7).
0) and the upper end side of the piston rod (7a) projecting upward of the hydraulic cylinder (7) is connected to the lower surface of the intermediate portion of the spring support plate (6) to connect the agricultural tractor. The hydraulic cylinder (7) is installed so that it can be operated from the driver's seat side of (B).

Therefore, although the rear cover (1) can be elastically pressed onto the cultivated ground by both compression springs (5) and (5) to level the ground as in the conventional method, an operator operating on the agricultural tractor (B) can perform rotary work. While looking at the rear of the machine (A) and observing the finished state of the rear cover (1) and operating the hydraulic cylinder (7), the compression springs (5) and (5) are moved while moving the spring support plate (6) up and down. By adjusting the amount of compression, the load can be adjusted accurately, and the ground leveling by the rear cover (1) can be adjusted appropriately.

Since the hydraulic cylinder (7) for moving the spring support plate (6) up and down is attached to the upper surface of the lower side of the rear cover (1), the rear cover (1) can be attached so that the stroke of movement can be sufficiently taken. .

[Effects of the Invention] As described above, according to the present invention, when the hydraulic cylinder (7) connected to the rear cover (1) is operated, the spring support plate (6) moves up and down and the compression of each compression spring (5) is adjusted. By adjusting the rear cover (1), the operator operating the agricultural tractor (B) can adjust the load of the rear cover (1).
It is possible to perform remote control quickly and easily from the driver's seat without getting off the vehicle as before, and moreover, it is possible to accurately adjust the load while observing the finishing state behind the rotary working machine (A) from the driver's seat side. (1)
It has a feature that it can be suitably implemented with a simple structure in which the hydraulic cylinder (7) is arranged so that the stroke of the movement can be sufficiently taken.

[Brief description of drawings]

FIG. 1 is a side view of an essential part of an embodiment of the present invention, FIG. 2 is a rear view of a part thereof, and FIGS. 3 and 4 are side views of a part of FIG. (A) ... Rotary work machine, (1) ... Rear cover (B) ... Agricultural tractor (2) ... Rotary cover, (3) ... Stay (4) ... Rod, (5) ... Compression spring (6) ... Spring support plate , (7) ... Hydraulic cylinder

Claims (1)

[Scope of utility model registration request] 1. A rotary working machine (A) connected to the rear of the machine body.
Rear cover (1) that is pressed downward by a spring at the rear
In the agricultural tractor (B) configured by vertically arranging the rods, the lower ends of the rods (4) loosely fitted in the plurality of stays (3) extending from the upper rotary cover (2) are attached to the rear cover (1). ), The spring support plate (6) is brought into contact with the lower portion of each compression spring (5) fitted to the lower side upper surface of each stay (3). At the same time, the other end of a hydraulic cylinder (7) whose one end is connected to the upper surface of the lower side of the rear cover (1) is connected to the spring support plate (6) in a continuous manner. Rear cover load adjustment device.