JP2847832B2 - Working unit elevating device such as combine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a working unit elevating device such as a combine.

(Prior Art and Problems to be Solved by the Invention) An elevating cylinder that connects a vehicle body and a reaper by using a link that expands and contracts in a V-shape, and one side of the expansion and contraction link is provided between the vehicle body and the body. By rotating due to the expansion and contraction of
In a mode in which the reaping device is moved up and down by expanding and contracting the enlargement / reduction link, each enlargement / reduction link forms an H shape by connecting the middle portions of the left and right side portions at the lateral connection side portions. If the tip of the stalk is configured to be freely expandable and contractable, straw chips and the like will fall on these connecting sides and are likely to accumulate. Easily.

The present invention is intended to solve such a defect and to simplify the configuration.

(Means for Solving the Problems) The present invention provides a U-shaped U-shaped link 19 between both sides of a vehicle body 1 and a working device that can move up and down with respect to the vehicle body 1.
One end of both sides 24 of the H link 23 formed in an H shape is pivotally connected to the H link 20 so that the two sides 20 of the U link 19 and both sides 24 of the H link 23 can be freely expanded and contracted. And a working unit elevating device such as a combine, wherein the working device is raised and lowered by expansion and contraction of an elevating cylinder 28 provided between the vehicle body 1 and the enlarging / reducing link.

(Operation and effect) By expansion and contraction of the lifting cylinder 28, both sides of the U-link 19
The expansion and contraction link provided between the side of the H link 23 and the side 20 of the H link 23 is expanded and contracted so that the working device is moved up and down with respect to the vehicle body 1. Since the enlargement / reduction link is based on the enlargement / reduction rotation of the U-link 19 and the H-link 23, a lateral connecting side portion is located at the distal end of the U-link 19 and the center of the H-link 23, and Even if the link is rotated to close, the connecting side portions of the two links 19 and the H link 23 do not approach each other to form a superposed state, and even if straw dust or the like falls from the upper side in order to maintain a wide interval. In addition, there is little stagnation caused by being caught by the enlargement / reduction link, and the configuration can be simplified.

(Embodiment) In the illustrated example, a vehicle body 1 is a traveling device 2 in a crawler form.
In the upper part, the traveling transmission case 3, the threshing device 4, the engine 5, the steering device 6, etc. are arranged, and the rear end of the reaper frame 8 of the reaper 7 is attached to the support frame on the traveling transmission case 3 At the upper end of 9, it is provided so as to be able to move up and down by rotating around an elevating shaft 10.

The mowing machine frame 8 is provided with a cutting blade device 11 at a lower end portion, and a weeding frame 12 is provided in front of the cutting blade device 11 on both the left and right sides. The stalk raising device 13 to be raked, the raking device 14 for performing the cutting by the cutting blade device 11 while squeezing the cereal stem raised by the cereal stalk raising device 13, and moving the harvested cereal culm to the rear side while collecting A collection device 15 for feeding is provided. A grain culm transport device 16 for nipping and transporting the grain culm collected by the collection device 15 to the upper rear is provided, and the end portion is transported into the transport area between the transport chain 17 of the threshing device 4 and the clamping rod 18. And threshing.

At the lower part of the reaper frame 8, the upper ends of the right and left sides 20 of the U-link 19 formed in a U-shape in front view are attached to the shaft 22 of the support frame 21 projecting from the reaper frame 8 to the left and right sides. To be able to rotate up and down. Also, the upper end of the left and right sides 24 of the H-link 23 is vertically pivotally supported at the front end of the vehicle body 25. The lower ends of the left and right sides 24 of the H-link 23 and the left and right sides of the U-link 19 A lower end of the side 20 is pivotally connected 26 so as to be able to expand and contract back and forth. Further, by connecting both ends of an elevating cylinder 28 which is expanded and contracted by hydraulic pressure between the vehicle body 1 and a connecting portion 27 of the H link 23, and extending the elevating cylinder 28 hydraulically, the H link 23 is rotated around the shaft 22. By turning it upwards and expanding the U-link 19,
The reaper frame 8 is raised about the elevating shaft 10 to control the height of the cutting blade device 11 and the like with respect to the reaping ground. Also, by reducing the lifting cylinder 28, the expansion / contraction link is contracted to lower the reaper frame 8 about the lifting shaft 10.

Even if the expansion / contraction link is closed and the opening angle between the U-link 19 and the H-link 23 is reduced, the connecting portion 29 of the U-link 19 and the connecting portion 27 of the H-link 23 are vertically separated by a predetermined distance. Therefore, even if straw debris falls during the transfer of the harvested grain stalks, it stays on these connecting parts 27 and 29 and accumulates. It is difficult to do so, and even if there is straw debris that is caught with the raising and lowering movement of the reaper 7, it is easy to shake off. And U-link 19 and H-link
The lower end of 23 can maintain the stable support of the reaper frame 8 with a small opening vibration to the left and right by the connecting portion 29 of the U-link 19.

[Brief description of the drawings]

1 shows an embodiment of the present invention. FIG. 1 is a side view, and FIG. 2 is a partially oblique view. (Explanation of reference numerals) 1... Body, 7... Reaper 8... Reaper frame, 19... U-link 20... … Connection part 28 …… Elevating cylinder, 29 …… Connection part

Claims (1)

(57) [Claims] 1. A U-shaped link formed between a vehicle body and a working device that can move up and down with respect to the vehicle body.
One end of both sides 24 of the H-link 23 formed in an H-shape is pivotally connected, and the space between the sides 20 of the U-link 19 and both sides 24 of the H-link 23 can be freely expanded and contracted. A working unit elevating device such as a combine, wherein the working device is moved up and down by expansion and contraction of an elevating cylinder 28 provided between the vehicle body 1 and the enlarging / reducing link provided by the provided expanding / contracting link.