JPH0513127U - Piece structure for cutting blade drive - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a cutting blade driving piece structure capable of preventing early wear on a mating surface between the vertical axis and the piece and improving durability of the piece and the vertical axis. [Structure] A screw is provided in an oil passage that can supply oil from an upper portion provided on the vertical axis, and an oil sump communicating with the oil passage and the oil sump are formed on a mating surface between the vertical axis and the bridge. An oil seal portion is provided above and below, and a washer for preventing vertical movement of the piece is detachably fixed to the upper end surface of the vertical axis by a mounting bolt screwed to the screw. [Effect] In addition to preventing foreign matter from entering the mating surface between the vertical axis and the piece, oil lubrication can be performed for a long period of time, and durability of the piece and the vertical axis can be improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a clipper-type cutting blade mounted on a combine, a binder, etc., and relates to a bridge structure for driving the cutting blade.

[0002]

[Prior Art]

 The hair clipper-type cutting blade used for combine and binder is composed of a lower blade that serves as a fixed blade and an upper blade that serves as a movable blade.This upper blade has a knife head fixed to the upper blade centered on a fulcrum shaft. It is adapted to reciprocate left and right by being reciprocated left and right by a cylindrical piece pivotally supported at one end of an oscillating bell crank.

Particularly, since a cutting blade such as a combine harvester for multi-row cutting has a long length and a high load, and is further operated at a high speed, a flat surface formed on both left and right sides of the piece is opened in a knife head. Sufficient surface pressure is maintained by fitting in the letter-shaped guide hole, and the durability against high load and high speed operation is improved.

[0004]

[Problems to be solved by the device]

 By the way, there is no "puddle" for storing lubricating oil on the mating surface of the vertical axis fixed to the bell crank side and the cylindrical piece rotatably fitted to this vertical axis. Even if lubrication is performed, it easily flows to the outside and straw debris and the like may enter between the two, causing the mating surface between the vertical axis and the bridge to wear early and generating extremely high noise. However, there was still a problem that the durability of the piece and the vertical axis was low.

Therefore, the present invention was devised to solve the above-mentioned problems, and it prevents cutting of wear at the mating surface between the vertical axis and the piece and improves the durability of the piece and the vertical axis. The present invention is carried out for the purpose of providing a piece structure for use.

[0006]

[Means for solving the problem]

 The present invention that achieves the above-mentioned object is a cutting blade in which the bell crank 10 side piece 13 is fitted in the guide hole 5 of the knife head 6, and an oil passage 20 through which oil can be supplied from the upper portion provided on the vertical axis 19 is provided. A screw 22 is bored, and an oil sump portion 21 communicating with the oil passage 20 and an oil seal portion 24 positioned above and below the oil sump portion 21 are formed on the mating surface between the vertical axis 19 and the bridge 13. A washer 25, which is provided in each case, for stopping the vertical movement of the piece 13, is detachably fixed to the upper end surface of the vertical axis 19 by a mounting bolt 23 screwed to the screw 22.

[0007]

[Work]

 Therefore, even with the clipper-type cutting blade 1 in which the piece 13 on the side of the bell crank 10 is fitted in the guide hole 5 of the knife head 6, the upper part is opened by removing the mounting bolt 23 for disassembling the piece. Oil is supplied to the oil sump 21 by utilizing the oil passage 20 on the side of the vertical axis 19 that is formed. The oil stored in the oil sump 21 is completely sealed by the tightness of the oil passage 20 by tightening the mounting bolt 23 and the oil seals 24 provided on the upper and lower sides of the oil sump 21, and then flows out to the outside. Therefore, the mating surface of the bridge 13 and the vertical shaft 19 can be lubricated for a long period of time in addition to preventing foreign matter from entering.

[0008]

【Example】

 1 to 3 showing the present invention as an embodiment will be described below. Reference numeral 1 denotes a clipper-type cutting blade equipped on a combine (not shown). This cutting blade 1 includes a lower blade (fixed blade) 3 on which a plurality of blades are fixed to a blade holder 2 and an upper surface of the lower blade 3. It is composed of an upper blade (movable blade) 4 which is placed and superposed on one another and reciprocates laterally to the left and right. A plurality of blade pieces are integrally connected to the upper blade 4 through a connecting rod.

On the left side of the upper blade 3, a knife head 6 having a substantially U-shaped guide hole 5 whose open side faces rearward is fixed, and on the rear side of the knife head 6, a machine head is fixed. A mounting seat 7 is provided, and a vertical fulcrum shaft 9 is fixed to the mounting seat 7. One end of the fulcrum shaft 9 is pivotally connected to a connecting rod 11 on the side of the eccentric cam 12, and the other end thereof is a vertical support for rotatably supporting a piece 13 fitted in the guide hole 5 on the side of the knife head 6. An L-shaped bell crank 10 to which the shaft 14 is fixed is swingably positioned.

The eccentric cam 12 is fixed to the left shaft end of a drive shaft 15 rotatably supported by a bearing 14 fixed to the machine base, and the eccentric cam shaft 16 side is connected to the connecting rod 11. It is connected. A vertical axis 19 is fixed to the other end of the bell crank 10, and a cylindrical piece 13 rotatably fitted in the vertical axis 19 is provided on a knife head 6 fixed to the upper blade 4. It is fitted in a guide hole 5 having a substantially U shape. An oil passage 20 through which oil can be supplied from the upper portion is bored in the center of the vertical axis 19, and a screw 22 into which a mounting bolt 23 is screwed is bored in the oil passage 20 from above. An annular oil sump portion 21 communicating with the oil passage 20 and oil seal portions 24 located on both upper and lower sides of the oil sump portion 21 are provided on the joint surface between the vertical axis 19 and the bridge 13.

A washer 25 for stopping the vertical movement of the piece 13 is detachably fixed to the upper end surface of the vertical axis 19 via a mounting bolt 23 that is screwed into a screw 22 of the oil passage 20. In the embodiment, the oil sump portion 21 is provided on the inner diameter side of the piece 13, but the oil sump portion 21 may be provided on the vertical axis 19 side or on both sides of the vertical axis 19 side and the piece 13 side. Produce an effect. In the drawing, reference numeral 17 is a plurality of divider frames extending forward from the machine base, 26 is a link ball, and 27 is a star wheel.

Therefore, when the drive shaft 15 is driven, the eccentric cam shaft 16 eccentrically rotates and the connecting rod 11 reciprocates in the front-rear direction. Along with this, since the piece 13 swings laterally integrally with the bell crank 10 around the fulcrum shaft 9, the movable blade 4 integrally reciprocates laterally with the knife head 6 in the left-right direction. .

[0013]

[Effect of the device]

 As described above, according to the present invention, even with a cutting blade in which the bell crank side piece is fitted in the guide hole of the knife head, the upper part is opened by removing the piece disassembly mounting bolt. Also, oil can be supplied to the oil sump using the oil passage on the vertical axis side. Moreover, the oil stored in the oil sump is completely sealed by the oil passage sealing by tightening the mounting bolts and the oil seals provided above and below the oil sump, and does not flow out. In addition to preventing foreign matter from entering the mating surface between the vertical axis and the bridge, oil lubrication can be performed for a long period of time, and the durability of the bridge and the vertical axis can be improved.

[Brief description of drawings]

FIG. 1 is an enlarged vertical sectional side view of a cutting blade driving piece structure according to the present invention.

FIG. 2 is a schematic plan view showing a reaping unit.

FIG. 3 is a schematic side view showing a reaper.

[Explanation of symbols]

3 Lower blade (fixed blade) 4 Upper blade (movable blade) 5 Guide hole 6 Knife head 9 Support shaft 10 Bell crank 12 Eccentric cam 13 Piece 14 Vertical axis 15 Drive shaft 16 Eccentric cam shaft
19 vertical axis 20 oil passage 21 oil sump 22 screw
23 Mounting bolt 24 Oil seal part 25 Washer.

Claims (1)

[Scope of utility model registration request] 1. A cylindrical blade having a vertical axis fixed to the other end of a bell crank whose one end is connected to an eccentric cam mechanism and rotatably fitted on the vertical axis is used as a movable blade of a clipper type cutting blade. In the cutting blade fitted in the guide hole of the provided knife head, a screw is bored in the oil passage provided on the vertical axis through which oil can be supplied from the upper part, and the oil passage is formed on the mating surface between the vertical axis and the piece. An oil sump communicating with the oil sump and oil seals located above and below the oil sump are provided, and a washer for stopping the vertical movement of the piece is detachably fixed to the upper end surface of the vertical axis by a mounting bolt screwed onto the screw. A piece structure for driving the cutting blade.