JPH0649161Y2 - Lubricating oil supply structure for cutting blade device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a cutting blade device in a pretreatment section of a combine, and more particularly to a lubricating oil supply structure.

<Prior Art> Conventionally, the supply of lubricating oil in the combine cutting blade device is
This is done before or after the start of the mowing work.For example, after lubricating each part of the cutting blade device with the oil pipe already installed, drive the cutting blade device for a certain period of time to disperse the lubricating oil to the whole. The method such as
It was also necessary for the worker to directly lubricate the place where the lubricating oil did not reach.

<Problems to be solved by the device> However, since the cutting blade device is installed at the position closest to the ground, lack of lubricating oil is likely to occur due to adhesion of mud or biting of straw dust, so frequent lubrication is required. Although it is necessary, the conventional method has a problem that the work efficiency is lowered because the work must be interrupted and the oil must be supplied on the way.

Further, in the cutting blade device in which the upper and lower blades are driven, since the driving device is large, it is difficult to spread the lubricating oil over the entire driving device in a short time during work.

<Means for Solving Problems> In the present invention for solving the above problems, the main pipe 72 connected to the hydraulic pump 71 is connected to the pretreatment unit 3, and the base end portion is the main pipe 72. A tubular nozzle mounting portion 80, which is supported by a branch pipe 75 which is further branched and whose tip is closed and which is fixedly supported on the pretreatment portion 3 side, is piped in the vicinity of the cutting blade device 11, and the nozzle mounting portion 80 is provided. At least the crank 4 of the cutting blade device 11
In 9,51, characterized in that a plurality of nozzles 78a, 78b, 78c for performing a wide range of oil supply to the cutting blade device 11 including concentrated oil supply to the cutting blade drive engagement parts 40, 42, 64 is provided. There is.

<Operation> When the hydraulic pump 71 is driven, the lubricating oil flows in the main pipe 72 and is sent to each part of the pretreatment unit 3. At this time, the lubricating oil is also sent into the branch pipe 75, and is jetted toward the cutting blade device 11 from each nozzle 78a, b ... Provided in the branch pipe 72 by the pressure of the hydraulic pump 71.

By directing the direction of the nozzle 78 to the required lubrication location, concentrated lubrication can be performed with high efficiency, and simultaneous lubrication can be performed on the entire device.

<Embodiment> An embodiment of the present invention will be described in detail below with reference to the drawings.
FIG. 8 is a side view of a pre-treatment section of a combine in which the apparatus of the present invention is implemented. A pre-treatment section 3 is provided in front of the machine body 1 so as to be vertically swingable, and the front lower end of the pre-treatment section 3 is shown. Is provided with a plurality of dividers 7 attached to the pretreatment frame 5, and a plurality of raising cases 9 are obliquely provided from the rear of the divider 7.

A cutting blade device 11 is attached to the pretreatment frame 5 in the left-right direction behind the lower end of the raising case 9.

As shown in FIGS. 1 and 2, the cutting blade device 11 is provided with a collar 13 projecting downwardly below a plurality of pretreatment pluralities 5.
And a plate-shaped receiving stand 15 attached over substantially the entire width so as to project forward from the end face of the collar 13, and supported on the pretreatment frame 5 on the receiving stand 15 by an upper blade 17 and a lower blade. 19 and 19 are placed on top of each other so as to be movable left and right.

Both the upper blade 17 and the lower blade 19 are integrally fixed to the lower surface or the upper surface of one of the upper and lower knife bars 21, 23 by fixing tools 20 such as flat head bolts or rivets so that a large number of blades are arranged in a straight line. , The shape configuration is almost the same, double-edged 17,1
9 is a blade holder 15 with the sliding surfaces on the blade side facing each other
Placed on top.

A straight lower blade guide 25, which is formed thicker than the lower knife bar 23, is fixed on the front end of the blade holder 15 over the entire length by a fixing tool 26 such as a flat head bolt. In addition to preventing dirt and straw from entering the
The bottom surface is in sliding contact.

As shown in FIG. 3, clips 27, which are curved in a U shape at predetermined intervals, are fixed to the blade holder 15 in the front-rear direction by fasteners 28 such as bolts. A blade retainer 29 is fixed to the front end of the upper inner surface of the clip 27, the upper surface of the upper blade 17 is in sliding contact with the lower surface of the clip 27, and the lower blade guide 25 holds the upper and lower blades 17 and 19 slidably.

The rear surface of the lower knife bar 23 is in sliding contact with the lower front end 31 of the clip 27, and the lower knife bar 23 is slidably held together with the lower blade guide 25 to regulate the forward and backward movement of the lower blade 19.
Furthermore, in the clip 27, behind the upper and lower blades 17, 19,
The friction plate 33 is fixed by a fastener 34 such as a bolt via a collar 35, and the front end surface of the friction plate 33 is in sliding contact with the rear surface of the upper knife bar 21 to regulate the forward and backward movement of the upper blade 17. The collar 35 has a sufficient thickness so that the lower surface of the friction plate 33 does not come into contact with the upper blade 17. Further, an adjusting liner 36 for adjusting the height of the clip lower front end portion 31 is also interposed between the clip 27 and the receiving base 15.

As shown in FIGS. 1, 4, and 5, upper blade 17 and lower blade
The front ends of plate-shaped knife heads 37, 39 are fixed to 19 via knife bars 21, 23. Here, the receiving table 15 is provided with a space 15a for attaching the knife head 39 to the lower blade 19 from the lower side, and its space is sufficient to allow the lateral movement of the knife head 39. . The knife head 39 is provided with a step portion 39a which is bent upward in a crank shape at the rear of the attachment portion to the lower blade 19 in order to escape the interference with the receiving base 15, and accordingly is attached to the upper blade 17. A similar step portion 37a is formed in the knife head 37 to be prevented so as to avoid interference with the knife head 39.

At the rear end of each knife head 37, 39, a crank 4
Knife side accommodating portions 37b and 39b, which are U-shaped notches for accommodating the knife side engaging portions 40 and 42 of 9,51, are formed, respectively. Sliding contact surfaces 37c, 39c, which are provided so as to project upward, are formed parallel to the front-rear direction on the left and right inner side surfaces of the accommodating portions 37b, 39b.

Knife side engaging portions 40, 42 which engage with the knife side accommodating portions 37b, 39b, respectively, are crankshafts 53, 55 projectingly provided on the pretreatment unit side.
Cranks 49 and 51, which are rotatably supported by, are provided at the tip of the knife side, and pins 41 and 45 protruding from the tip of the knife, and rotatably fitted to the pins 41 and 45. And cylindrical rollers 43 and 47. Laura 43,47
A fart picture parallel to each other is formed on the peripheral surface of the above, and it is slidably fitted in the above-mentioned accommodating portions 37b and 39b, and the plane is in sliding contact with the sliding contact surfaces 37c and 39c. In such a configuration, the engaging portions 40, 42 are moved left and right in an arc shape as the cranks 49, 51 swing, and slide in the front-rear direction while moving the knife heads 37, 39 left and right. At this time, since the engaging portions 40, 42 and the housing portions 37b, 39b are in surface contact with each other, the contact pressure is dispersed and the occurrence of backlash due to wear or the like is reduced.

As shown in FIGS. 1 and 6, the cranks 49, 51 are shaped like bell cranks bent left and right at the shaft support parts 49a, 51a, and the cranks 49, 51 are located at the midpoints of the shaft support parts 49a, 51a. It is formed so as to overlap. One crank 49 crank
As with the knife side engaging portion 40, the pin 62 and
An engaging portion 64 including a roller 63 having a plane parallel to the facing position is provided at a midpoint between the crankshafts 53 and 55.

At the tip of the other crank 51 on the crank 49 side, the engaging portion is
An accommodating portion 61 for slidably accommodating and accommodating 64 is provided as a rectangular hole whose left and right sides are the longitudinal direction. Crank 49
When the crank swings, the crank 51 moves through the engaging portion 64 and the accommodating portion 61.
Also, the engaging portion 64 swings in the front-rear direction while the roller 63 slides and rotates with respect to the pin 62, and the housing portion 61
Slide in the left and right directions. At this time, the engaging portion 64 and the sliding portion 61
Since the surfaces contact each other in parallel to each other, the sliding contact surface is less worn, the play and vibration are less likely to occur, and reliable power transmission can be achieved.

As shown in FIGS. 1, 5, and 6, the outer end of the crank 49 is connected to a link 67 via a pin 65, and the cutting blade shaft 69 connected to the link 67 drives the crank 49 to force the crank 49. It is rocked.

Next, the lubricating oil supply structure of the cutting blade device 11 described above will be described. As shown in FIG. 7 and FIG.
A hydraulic pump 71 holding a lubricating oil is attached to each part of the pretreatment unit 3 at the end of the lower case 70 on the uncut side, and is supplied from an oil tank attached near the raising case 9 on the uncut side. Lubricant is supplied by pipe 68. A main pipe 72 is connected to the discharge side of the hydraulic pump 71. The main pipe 72 is fixed on a horizontal pretreatment frame 73 provided along the lower case 70, and a plurality of oil feed pipes separated from the main pipe 72 are provided.
74a to e respectively guide the lubricating oil to the cutting blade, the left scraping conveyance section, the left handling depth conveyance section, the middle conveyance section and the receiving conveyance section.

Behind the cranks 49, 51 for driving the above-mentioned cutting blade, the main pipe 7
A branch pipe 75 separated from 2 is provided so as to project upward.
An upper portion of the branch pipe 75 is bent horizontally, and a tip 79 thereof is closed, and a support rod 77 for supporting the branch pipe 75 is connected. The support rod 77 is fixed to the main pipe 72 by fixing the other end to a branch pipe.
Supports 75. A check valve 76 is attached to the branch pipe 75, and a nozzle 78a for injecting lubricating oil is provided downstream of the check valve 76.
c is provided. The branch pipe 75 at the portion where the nozzle 78 is provided is bent at two places, and each nozzle 78a-c is formed so as to face each engaging portion 40, 42, 64 of the crank mechanism described above.

The lubricating oil nozzle mounting portion 80 of the branch pipe 75 is formed of a material having a certain hardness such as vinyl chloride,
It is detachably attached. Therefore, if the lubricating oil nozzle mounting portion 80 having a different shape is replaced, the jetting direction can be changed.

According to the above-mentioned configuration, when lubricating other driving parts, for example, the respective transporting parts, the lubricating oil is simultaneously sprayed over a wide range toward the cutting blade device, so that the lubricating oil may run out. Absent. Further, the rollers 43, 47, 63 of the engaging portions 40, 42, 64 and the accommodating portion 37b,
By intensively injecting the oil into places where lubrication is needed, such as 39b and 61, the lubricating oil can be efficiently used to reduce or prevent wear of the drive unit.

<Effect of the Invention> According to the structure of the present invention configured as described above, the lubricating oil is injected by the plurality of nozzles provided in the nozzle mounting portion, so that the lubricating oil is particularly required to be supplied to the crank engaging portion. The cutting blade device including it can be swiftly spread over a wide range, and even during work, oil can be quickly supplied by the hydraulic pump without interruption.

Further, since it is not necessary for the worker to perform oiling work near the cutting blade device, it is safe without involving the operator in the cutting blade device.

In particular, in the cutting blade device driven by the upper and lower blades, the entire drive mechanism becomes large, so the structure of the present invention that can instantly lubricate the whole is meaningful, and the nozzle is squeezed to meet the need for lubrication. It is also possible to lubricate the required amount to the required points and use the lubricating oil efficiently.

[Brief description of drawings]

FIG. 1 is a plan view of the cutting blade device, FIG. 2 is a cross-sectional view taken along the line AA showing the mounting state of the cutting blade device, FIG. 3 is a cross-sectional view taken along the line BB showing a clip holding portion of the cutting blade, and FIG. Is a side sectional view showing a state where the knife head is attached to the cutting blade, FIG. 5 is a sectional view taken along line C-C showing a connecting state between the link and the crank and the knife head and the engaging portion, and FIG. 6 is a connecting state between the cranks. And a D-D cross-sectional view showing a connected state of the crank and the knife head,
FIG. 8 is a side perspective view of the vicinity of the lower case showing the arrangement of the oil supply pipes of the pretreatment section, and FIG. 8 is a side view of the pretreatment section of the combine in which the apparatus of the present invention is implemented. 3: Pretreatment part, 11: Cutting blade device 71: Hydraulic pump, 72: Main pipe 75: Branch pipe, 78: Nozzle

Claims (1)

[Scope of utility model registration request] 1. A main pipe (72) connected to a hydraulic pump (71).
To the pretreatment section (3), the base end is supported by the branch pipe (75) branched from the main pipe (72), the tip is closed, and the end is fixed and supported on the pretreatment section (3) side. The tubular nozzle mounting portion (80) thus formed is piped near the cutting blade device (11), and at least the crank (49), (51) of the cutting blade device (11) is provided in the nozzle mounting portion (80). A plurality of nozzles (78) for performing a wide range of oil supply to the cutting blade device (11) including centralized oil supply to the cutting blade drive engaging parts (40), (42), (64).
Lubricating oil supply structure for the cutting blade device provided with (a), (78b), (78c).